JP6759092B2 - Transplant work machine - Google Patents

Description

The present invention relates to a transplanting work machine for planting seedlings and laying irrigation tubes.

Conventionally, an irrigation tube is laid between the rows of seedlings planted in ridges, and the seedlings are irrigated with the irrigation tube (see Patent Document 1).

Japanese Unexamined Patent Publication No. 2005-341903

Conventionally, the planting work of seedlings and the laying work of irrigation tubes are performed separately. Therefore, there is a problem that the work efficiency of the seedling planting work and the irrigation tube laying work is poor.
Therefore, in view of the above problems, an object of the present invention is to provide a transplanting work machine capable of improving the work efficiency between the seedling planting work and the irrigation tube laying work.

The transplanting work machine according to one aspect of the present invention is an irrigation tube having a transplanting machine having at least one planting tool for planting seedlings in a field and an irrigation tube unwound from a rotatable tube roll and laid in the field. A laying device and a ground work machine arranged in front of the transplant machine to perform work on the field are provided, and the ground work machine is swingable up and down with a cultivating part for cultivating the field. It also has a rear cover that forms the upper surface of the ridge with the soil cultivated in the cultivated portion, and the irrigation tube laying device includes a guide member that guides the irrigation tube unwound from the tube roll to the field, and said. It has a support stay that pivotally supports the upper part of the guide member to the rear cover, and a grounding member that is provided below the guide member and touches the upper surface of the field.

Further, a plurality of the planting tools are provided, and the guide member guides the irrigation tube to be laid at a position corresponding to the adjacent planting tools in the width direction.
The front Symbol tube roll is rotatably mounted about an axis extending in the width direction above the ground working machine, wherein the guide member, towards the field from the tube roll side, downward toward the rear It is provided in a slanted shape for transition.

Further, the transplanting work machine includes a front chair provided above the ground work machine and in front of the transplanting machine, the tube roll is provided on the front side of the front chair, and the guide member is the front chair. It is provided below.
The front Symbol guide member is supported by the rear cover is disposed above the rear cover.

Further, the transplanting work machine includes a transplanting machine having at least one planting tool for planting seedlings in the field, an irrigation tube laying device having an irrigation tube unwound from a rotatable tube roll and laid in the field, and the above. The ground work machine is provided in front of the transplant machine and is provided with a ground work machine for working on a field, and the ground work machine has a gear case into which power is input and a support arm protruding in the width direction from the gear case. However, the irrigation tube laying device has an attachment body for attaching the tube roll to the support arm.

Further, the guide member is provided at the insertion port for inserting the irrigation tube, a wide insertion port in the width direction, an insertion port for inserting the inserted irrigation tube, and the insertion / exit. It has a rotatable guide pin with which the irrigation tube abuts.
Further, the transplanting work machine is provided with a multi-film laying device for laying a multi-film from above the irrigation tube provided in the front portion of the transplanting machine and laid in the field.

In addition, a plurality of sets of one irrigation tube laid at a position corresponding to two adjacent planting tools and one tube roll from which the irrigation tube is unwound are provided.

With the transplanting work machine, the work of planting seedlings and the work of laying irrigation tubes can be performed in one process with one machine, and the work efficiency can be improved.

It is the whole side view of the transplant work machine. It is the side view which omitted a part of the transplant work machine. It is a schematic plan view of a ground work machine and a transplant machine. It is a schematic rear view of a transplant machine. It is a side view which shows the connection relationship between a rotary machine frame and a transplant machine frame. It is a top view which shows the periphery of the front chair. It is a top view which shows the position of a front chair, a side chair and a worker. It is a side partial cross-sectional view of the 1st height change device. It is a schematic block diagram which shows the power transmission system. It is a system diagram which shows the power transmission system of the whole transplant machine. It is a side view of a transplanting frame and a planting apparatus. It is a top view of a transplant frame. It is a rear view of a transplant frame. It is a side view of the planting tool stop mechanism. It is a top view of the planting tool stop mechanism. It is a top view of the planting apparatus. It is an operation diagram which shows the raising and lowering operation of a planting tool. It is a schematic plan view of the seedling supply device. It is a back sectional view of the seedling supply device. It is a layout drawing of the lid of a supply cup. It is a side view of a tractor. It is a side view of a tank and a mounting frame. It is a top view of a tank and a mounting frame. It is a front view of a tank and a mounting frame. It is the schematic of the irrigation apparatus. It is a side view of the planting device. It is a front view of a pump and a power transmission device. It is a side view of a pump and a power transmission device. It is a partial front sectional view of the timing adjustment part. It is a side view of the timing adjustment part. It is a system diagram of a power transmission system. It is sectional drawing of the power transmission device. It is a side view of an intermittent mechanism. It is a side view of the speed change mechanism. It is a side view of the final transmission mechanism. It is a top view of the irrigation tube laying device, the soil cultivator, and the suppression ring. It is a side view of the irrigation tube laying device. It is an enlarged plan view of the irrigation tube laying device. It is a side view which shows the central earth cultivator and the suppression wheel. It is an enlarged side view which shows the central earth cultivator and the suppression wheel. It is a side view of the transplant work machine which concerns on another embodiment. It is a top view of the main part of the transplant work machine which concerns on another embodiment. It is a side view which shows the multi-film laying apparatus. It is a top view which shows the multi-film laying apparatus.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings as appropriate.
1 and 2 show a transplanting work machine 4 capable of planting (transplanting) seedlings while traveling. That is, the transplanting work machine 4 includes a traveling body 1 and a transplanting machine 3 mounted behind the traveling body 1. Further, the transplanting work machine 4 includes a ground work machine 2 between the traveling body 1 and the transplanting machine 3. The ground work machine 2 is mounted on the rear portion of the traveling body 1, and the transplant machine 3 is mounted on the ground work machine 2. That is, in the present embodiment, the transplanting work machine 4 is a work machine capable of planting (transplanting) seedlings together with ground work (cultivation, etc.) while traveling with one machine. Further, the transplanting work machine 4 is provided with ridgers 23L, 23R, 23C. That is, the transplanting work machine 4 of the present embodiment is a work machine capable of performing tilling, ridge raising and seedling planting in one step with one machine.

In the present embodiment, a tractor which is a traveling vehicle is illustrated as the traveling body 1. Further, a rotary cultivator is illustrated as the ground work machine 2. The traveling body 1 is not limited to the tractor, and may be another traveling vehicle. Further, the ground work machine 2 is not limited to the rotary cultivator, and may be any machine that works on the field. Further, although the rotary cultivator 2 exemplifies a side drive type rotary cultivator, it may be a center drive type rotary cultivator.

1 and 2 show side views of the transplanting work machine 4. Unless otherwise specified in the embodiment, the front side (left side of FIGS. 1 and 2) of the driver seated in the driver's seat 5 of the tractor 1 is the front, and the rear side of the driver (right side of FIGS. 1 and 2) is the rear. The left side of the driver (front side of FIGS. 1 and 2) will be described as the left side, and the right side of the driver (back side of FIGS. 1 and 2) will be described as the right side. Further, the horizontal direction K2 (see FIG. 3), which is a direction orthogonal to the front-rear direction K1 (see FIG. 1) of the tractor 1, will be described as the width direction.

The direction of arrow K3 in FIG. 3 will be described as outward in the width direction, and the direction of arrow K4 in FIG. 3 will be described as inward in the width direction. The outward direction in the width direction is a direction from the central portion in the width direction of the tractor 1 toward the right portion or the left portion. In other words, the outer direction in the width direction is the direction K2 in the width direction and away from the center in the width direction of the tractor 1. The inside in the width direction is the direction opposite to the outside in the width direction. In other words, the inward direction in the width direction is the direction K2 in the width direction and approaches the center in the width direction of the tractor 1.

The width direction (left-right direction) of the tractor 1 is the width direction of the ground work machine 2 and the width direction of the transplanter 3.
As shown in FIG. 1, the tractor (traveling body) 1 has a vehicle body 6, front wheels 7A mounted on the front portion of the vehicle body 6, and rear wheels 7B mounted on the rear portion of the vehicle body 6. The front wheels 7A and the rear wheels 7B allow the tractor 1 to travel forward or backward.

The driver's seat 5 is provided above the rear portion of the vehicle body 6. A steering wheel 8 is provided in front of the driver's seat 5. The rear part of the vehicle body 6 is equipped with a PTO shaft 22 that takes out the power of the tractor 1 to the outside.
As shown in FIG. 2, the rotary cultivator 2 is mounted on the rear portion of the tractor 1 so as to be able to move up and down via a three-point link mechanism 9 and a connecting frame 10. The three-point link mechanism 9 is mounted on the rear portion of the vehicle body 6. The connecting frame 10 is provided at the rear of the three-point link mechanism 9. A rotary cultivator 2 is attached to the connecting frame 10.

As shown in FIGS. 2 and 3, the rotary cultivator 2 has a machine frame (working machine frame) 11. The machine frame 11 includes a gear case 12, a left support arm 13L, a right support arm 13R, a transmission case 14, and a side frame 15. The gear case 12 is located at a substantially central portion of the rotary tiller 2 in the width direction K2. The support arm 13L projects from the left portion of the gear case 12 to the left. The support arm 13R projects to the right from the right portion of the gear case 12. The upper portion of the transmission case 14 is attached to the left end portion of the support arm 13L. The upper portion of the side frame 15 is attached to the right end portion of the support arm 13R. A rotating shaft 16 is provided between the lower part of the transmission case 14 and the lower part of the side frame 15. A large number of tilling claws 17 are fixed to the outer periphery of the rotating shaft 16 via brackets. The tilling portion 18 is formed by the rotating shaft 16 and the tilling claw 17.

The upper part of the tillage portion 18 is covered with the upper cover 19A. The rear portion of the tillage portion 18 is covered with a rear cover 19B. The upper end of the rear cover 19B is pivotally supported by the upper cover 19A and can swing up and down. The rear cover 19B is urged downward by the crackdown device 20. The repression device 20 is a device that urges the rear cover 19B downward by the force of a spring.
As shown in FIG. 2, the gear case 12 is provided with an intake shaft 21. The power of the PTO shaft 22 is transmitted to the intake shaft 21 via a joint. The power transmitted to the intake shaft 21 is transmitted to the chain transmission means in the transmission case 14 via the gear mechanism in the gear case 12 and the shaft in the support arm 13L. The rotating shaft 16 is driven by the power transmitted to the chain transmission means. The rotation shaft 16 is rotated in the direction of arrow A1 in FIG. When the rotating shaft 16 rotates in the A1 direction, the tilling claw 17 cultivates the soil and releases it to the rear rear cover 19B. The soil cultivated in the cultivated portion 18 is leveled by the rear cover 19B to form the upper surface of the ridge R1 (see FIG. 2).

As shown in FIG. 4, the side surface of the ridge R1 is formed by three ridge risers 23L, 23R, 23C. That is, in the ridge R1, two ridges (2 ridges) of the first ridge R11 on the right side and the second ridge R12 on the left side are formed by the ridge risers 23R, 23L, and 23C. Each ridger 23R, 23L, 23C is composed of a ridger. That is, the three ridgers are the first side ridger 23R on the right side, the second side ridger 23L on the left side, and the central ridger 23C in the center. As shown in FIG. 3, the first side hilling device 23R is provided on the right side (one side behind the tractor 1) on the rear side of the rotary cultivator 2. The second side hilling device 23L is provided on the left side (the other side behind the tractor 1) on the rear side of the rotary cultivator 2. The central hilling device 23C is provided on the rear side (between the first side hilling device 23R and the second side hilling device 23L) at the center in the width direction of the rotary cultivator 2.

The first side hilling device 23R, the second side hilling device 23L and the central hilling device 23C are towed by the tractor 1 to cut a groove in the cultivated soil cultivated in the cultivated portion 18 and leveled by the rear cover 19B. .. The ridges R11 and R12 are formed by cutting a groove in the cultivated soil with the first side ridger 23R, the second side ridger 23L and the central ridger 23C. That is, the first side ridger 23R forms the right side of the first ridge R11. Further, the second side ridger 23L forms the left side portion of the second ridge R12. Further, the central ridge 23C forms the left side portion of the first ridge R11 and the right side portion of the second ridge R12. In other words, the central ridger 23C cooperates with the first side ridger 23R to form the first ridge R11, and cooperates with the second side ridger 23L to form the second ridge R12.

As shown in FIG. 3, the machine frame 11 has a left support stay 24L, a right support stay 24R, and a mast 25. The support stay 24L is fixed to the support arm 13L. The support stay 24R is fixed to the support arm 13R. The mast 25 is fixed to the gear case 12.
The transplanting machine 3 mounted behind the rotary tiller 2 has a support frame 26 pivotally supported by the support stays 24L and 24R, a left gauge wheel (support wheel) 27L, and a right gauge wheel (support wheel) 27R. A second height changing device 28 pivotally supported by the mast 25, and a second support frame 232 (see FIG. 6) provided between the left swing arm 31L and the right swing arm 31R. It has a lower support 234 (see FIG. 5) that supports the front portion of the second support frame 232 from below.

The support frame 26 is a frame material that supports the gauge wheels 27L and 27R. The gauge wheels 27L and 27R are members for setting the height of the rotary cultivator 2 (ground work machine). In other words, the gauge wheels 27L and 27R are members for setting the tillage depth of the rotary tiller 2. The second height changing device 28 is a device that swings the support frame 26 up and down to change the settings of the gauge wheels 27L and 27R.

As shown in FIGS. 3, 5, and 6, the support frame 26 has a front frame 29 pivotally supported by the support stays 24L and 24R, and a rear frame 30 connected to the rear portion of the front frame 29.
The front frame 29 includes a left swing arm 31L, a right swing arm 31R, an upper connecting rod 32U, a lower connecting rod 32D, a left vertical frame member 33L, and a right vertical frame member 33R. The left connecting rod 202L, the right connecting rod 202R, the left support member 224L, and the right support member 224R are provided. The swing arm 31L, the swing arm 31R, the connecting rod 32U, the connecting rod 32D, the vertical frame members 33L and 33R, and the connecting rods 202L and 202R are formed of a pipe material.

As shown in FIG. 6, the swing arm 31L is pivotally supported by the support stay 24L via a pivot shaft whose front end is inserted through the pivot plate 201L. The swing arm 31L projects rearward from the support arm 13L. The swing arm 31R is pivotally supported by the support stay 24R via a pivot shaft whose front end is inserted through the pivot plate 201RL. The swing arm 31R projects rearward from the support arm 13R. The connecting rod 32U connects the rear ends of the swing arm 31L and the swing arm 31R to each other. The upper portion of the left vertical frame member 33L is fixed to the left portion of the swing arm 31L, and extends downward from the left portion of the swing arm 31L (see FIG. 5). The upper portion of the right vertical frame member 33R is fixed to the right portion of the swing arm 31R, and extends downward from the right portion of the swing arm 31R. The front portion of the left connecting rod 202L is fixed to the lower portion of the vertical frame member 33L, and extends rearward from the lower portion of the vertical frame member 33L. The front portion of the right connecting rod 202R is fixed to the lower portion of the vertical frame member 33R, and extends rearward from the lower portion of the vertical frame member 33R.

The front frame 29 can swing up and down around a pivotal support portion at the front end of the swing arm 31L and the swing arm 31R.
As shown in FIG. 6, the support members 224L and 224R support the chairs 231L and 231R for the operator (for the operator to sit on), respectively. Hereinafter, for convenience, the chairs 231L and 231R will be referred to as front chairs. Further, the right front chair 231R is referred to as a first front chair, and the left front chair 231L is referred to as a second front chair.

The left support member 224L has a support rod 225L fixed to the middle portion of the swing arm 31L in the front-rear direction K1 and supports the first front chair 231R from below. The right support member 224R has a support rod 225R fixed to the middle portion of the swing arm 31R in the front-rear direction K1 and supports the second front chair 231L from below.
As shown in FIG. 7, the first front chair 231R is located in front of the first seedling supply device 72A, which will be described later. Specifically, the first front chair 231R is located on the front extension line L1 of the width direction center line of the path P1 of the first seedling supply device 72A described later. As a result, the worker H can sit facing the first seedling supply device 72A side (rear). The second front chair 231L is located in front of the second seedling supply device 72B, which will be described later. Specifically, the second front chair 231L is located on the front extension line L2 of the width direction center line of the path P1 of the second seedling supply device 72B described later. As a result, the worker H can sit facing the second seedling supply device 72B side (rear).

As shown in FIGS. 3 and 5, the rear frame 30 is connected to the rear portions of the connecting rods 202L and 202R constituting the front frame 29. The rear frame 30 includes a central horizontal frame member 34C, a left horizontal frame member 34L, a right horizontal frame member 34R, a left vertical frame member 35L, a right vertical frame member 35R, and a left wheel frame 36L. The right wheel frame 36R, the left front member 204L, the right front member 204R, the left rear member 205L, the right rear member 205R, the left connecting rod 206L, and the right connecting rod 206R. Has. Horizontal frame material 34C, horizontal frame material 34L, horizontal frame material 34R, vertical frame material 35L, vertical frame material 35R, wheel frame 36L, wheel frame 36R, front member 204L, front member 204R, rear member 205L, rear member 205R, connection The rod 206L and the connecting rod 206R are formed of a pipe material.

As shown in FIG. 3, the horizontal frame member 34C is located behind the front frame 29 and extends in the width direction K2. The horizontal frame member 34C is connected to the rear end of the connecting rod 202L and the rear end of the connecting rod 202R. The horizontal frame member 34L is fixed to the left portion of the horizontal frame member 34C, and protrudes to the left from the left end of the horizontal frame member 34C. The horizontal frame member 34R is fixed to the right portion of the horizontal frame member 34C and projects to the right from the right end of the horizontal frame member 34C. The front portion of the front member 204L is fixed to the left end of the horizontal frame member 34L, and extends rearward from the left end of the horizontal frame member 34L. The front portion of the front member 204R is fixed to the right end of the horizontal frame member 34R, and extends rearward from the right end of the horizontal frame member 34R. The upper end of the vertical frame member 35L is fixed to the left portion of the horizontal frame member 34C, and extends downward from the left portion. The upper end of the vertical frame member 35R is fixed to the right portion of the horizontal frame member 34C, and extends downward from the right portion.

As shown in FIGS. 3 and 5, the wheel frame 36L has a front member 37L and a rear member 38L. The front member 37L is fixed to the lower part of the vertical frame member 35L and extends to the left from the lower part of the vertical frame member 35L. The front end of the rear member 38L is fixed to the left end of the front member 37L and extends rearward from the left end. The wheel frame 36R has a front member 37R and a rear member 38R. The front member 37R is fixed to the lower part of the vertical frame member 35R and extends to the right from the lower part of the vertical frame member 35R. The front end of the rear member 38R is fixed to the right end of the front member 37R, and extends rearward from the right end.

A left gauge wheel (support wheel) 27L is rotatably attached to the rear portion of the wheel frame 36L. A right gauge wheel (support wheel) 27R is rotatably attached to the rear portion of the wheel frame 36L. A second side earthenware 23L is arranged in front of the gauge wheel 27L. The first side earthenware 23R is arranged in front of the gauge wheel 27R. The first side earthenware 23R is attached to the lower part of the vertical frame member 35R so that the height can be adjusted. The second side earthenware 23L is attached to the lower part of the vertical frame member 35L so that the height can be adjusted.

The lower part of the connecting rod 206L is fixed to the middle part of the wheel frame 36L (rear member 38L) in the front-rear direction, and the upper part is fixed to the middle part of the front member 204L in the front-rear direction. As a result, the connecting rod 206L connects the wheel frame 36L and the front member 204L. The lower part of the connecting rod 206R is fixed to the middle part in the front-rear direction of the wheel frame 36R (rear member 38R), and the upper part is fixed to the middle part in the front-rear direction of the front member 204R. As a result, the connecting rod 206R connects the wheel frame 36R and the front member 204R.

The front end of the rear member 205L is pivotally supported by the rear end of the front member 204L, and extends rearward from the rear end of the front member 204L. A horizontal shaft member 207L extending in the width direction K2 is attached to the front end of the rear member 205L. A support member 208L is fixed to the rear end of the front member 204L, and both ends of the horizontal shaft member 207L are supported by the support member 208L. As a result, the rear member 205L can rotate with respect to the front member 204L with the horizontal shaft member 207L as a fulcrum (center). The front end of the rear member 205R is pivotally supported by the rear end of the front member 204R, and extends rearward from the rear end of the front member 204R. The rear member 205R has the same structure as the rear member 205L and is rotatable with respect to the front member 204R.

A protruding member 40L projecting outward in the width direction K3 is provided at the rear portion of the rear member 205L. A protruding member 40R projecting outward in the width direction K3 is also provided at the rear portion of the rear member 205R.
A tubular body 209L is movably fitted on the outer circumference of the projecting member 40L in the width direction K2 along the projecting member 40L. A tubular body 209R is fitted on the outer periphery of the projecting member 40R so as to be movable in the width direction K2 along the projecting member 40R.

A support column 41L is fixed to the cylinder body 209L. The support column 41L extends upward from the tubular body 209L. A support column 41R is fixed to the tubular body 209R. The support column 41R extends upward from the tubular body 209R. Chairs 42L and 42R for workers (for the worker to sit on) are provided at the upper ends of the support columns 41L and the support columns 41R, respectively.
Hereinafter, for convenience, the chairs 42L and 42R will be referred to as side chairs. Further, the chair 42R is referred to as a first side chair 42R, and the chair 42L is referred to as a second side chair 42L.

As shown in FIG. 7, the first side chair 42R is located on one side (right side) of the width direction K2 of the first seedling supply device 72A, which will be described later, and the worker H is on the side of the first seedling supply device 72A. You can sit facing (to the left). The second side chair 42L is located on the other side (left side) of the width direction K2 of the second seedling supply device 72B, which will be described later, and the worker H faces the second seedling supply device 72B side (right side). You can sit down.

Further, the first side chair 42R is arranged on the side of the first planting device 68A, which will be described later, and on the side (right side) opposite to the second planting device 68B, which will be described later.
Further, the second side chair 42L is arranged on the side of the second planting device 68B and on the side (left side) opposite to the first planting device 68A.
The protruding members 40L, 40R and the tubular bodies 209L, 209R described above constitute a position adjusting mechanism capable of adjusting the positions of the first side chair 42R and the second side chair 42L in the width direction K2.

As shown in FIG. 4, the left base plate 212L is fixed to the lower part of the left support 41L. The base plate 212L extends inward in the width direction K2 from the upper part of the support column 41L. A base plate 212L is fixed to the lower part of the right column 41R. The base plate 212R is located inward K4 in the width direction of the support column 41R. The base plates 212L and 212R have a function of a footrest when the worker sits on the side chairs 42L and 42R, and a function of protecting the worker's feet from the rear support wheels 213L and 213R described later. There is.

As shown in FIG. 5, the upper portion of the stay 217L is fixed to the front portion of the rear member 205L. The stay 217L extends downward from the rear member 205L. Similarly, a stay (not shown) is fixed to the front portion of the rear member 205R and extends downward. The tip of the urging mechanism 215 is attached to the lower part of these stays. The urging mechanism 215 is a damper composed of a hydraulic cylinder. The damper 215 has an urging force in the extending direction. The damper 215 assists in changing the posture of the second side chair 42L. The base end portion of the damper 215 is attached to the connecting rod 206L. The urging force of the damper 215 assists the force required when the operator performs an operation of rotating the rear member 205L upward with the horizontal shaft member 207L as a fulcrum (center). The action of the damper 215 is the same for the first side chair 42R.

When the ground work machine (rotary cultivator) 2 is raised while the worker is not seated on the side chairs 42L and 42R, the side chairs 42L and 42R are automatically folded. Further, when the ground work machine 2 is raised while the worker is seated on the side chairs 42L and 42R, the rear member 205L is maintained so that the seating surfaces of the side chairs 42L and 42R are substantially horizontal. Rotates with respect to the front member 204L with the horizontal shaft member 207L as a fulcrum.

As shown in FIGS. 3 and 4, the upper portion of the wheel stay 39L is fixed at a position closer to the rear of the rear member 205L. The wheel stay 39L is located behind the stay 217L and the support column 41L, and extends downward from the rear member 205L. The upper part of the wheel stay 39R is also fixed at a position closer to the rear of the rear member 205R. The wheel stay 39R extends downward from the rear member 205R.

A rear support wheel (second rear support wheel) 213L is rotatably attached to the lower portion of the wheel stay 39L. The rear support wheel 213L is located behind the gauge wheel 27L and the second side cultivator 213L and below the second side chair 42L. A rear support wheel (first rear support wheel) 213R is rotatably attached to the lower portion of the wheel stay 39R. The rear support wheel 213R is located behind the gauge wheel 27R and the first side cultivator 213R and below the first side chair 42R. The first rear support wheel 213R supports the first side chair 42R, and the second rear support wheel 213L supports the second side chair 42L. That is, the rear support wheels 213L and 213R support the weight of the worker seated on the side chairs 42L and 42R.

As shown in FIG. 6, the second support frame 232 is located between the left swing arm 31L and the right swing arm 31R, and extends in the front-rear direction K1. As shown in FIG. 5, the second support frame 232 supports the operation unit 233 described later. The second support frame 232 includes a left support frame material 232L, a right support frame material 232R, a first connection frame material 232A, and a second connection frame material 232B. The support frame members 232L and 232R extend in the front-rear direction K1 in parallel with each other. The front end of the support frame member 232L is fixed to the left portion of the mast 25 and extends rearward. The front end of the support frame member 232R is fixed to the right portion of the mast 25 and extends rearward. The first connection frame member 232A extends in the width direction K2, and connects the middle portion of the support frame member 232L in the front-rear direction and the middle portion of the support frame member 232R in the front-rear direction. The second connection frame material 232B extends in the width direction K2 and connects the rear end of the support frame material 232L and the rear end of the support frame material 232R.

As shown in FIG. 6, the operation unit 233 includes a case 233A, an operation member 233B, and a control device (not shown) housed inside the case 233A. The rear portion of the case 233A is in contact with the front portion of the bracket body 60, which will be described later. The operating member 233B is provided on the upper surface of the case 233A. The operation member 233B is a member for performing a setting operation related to planting seedlings. In the present embodiment, the operating members 233B are rotary knobs, and a plurality (four) of the operating members 233B are provided side by side in the front-rear direction. The operation member 233B is, for example, a pick for setting the switching between stocks, a pick for setting the seedling emptying, and the like. However, the number, type, and arrangement of the operating members 233B can be changed as appropriate. The control device controls the setting related to planting seedlings based on the operation of the operation member 223B.

As shown in FIG. 5, the lower support 234 supports the rear portion of the second support frame 232 from below. The lower support 234 has a front rod 235, a mounting plate 236, and a connecting rod 237. The front end of the front rod 235 is fixed to the front portion of the upper surface of the upper cover 19A with a bolt, and extends rearward from the front portion. The mounting plate 236 and the connecting rod 237 are provided on the left side and the right side, respectively, with the center in the width direction K2 interposed therebetween. The mounting plate 236 on the left side is fixed to the rear portion of the support frame member 232L and extends downward from the rear portion. The mounting plate 236 on the right side is fixed to the rear portion of the support frame member 232R and extends downward from the rear portion. The left connecting rod 237 is fixed to the left rear end of the front rod 235 and the lower end of the left mounting plate 236 with bolts, respectively. The right connecting rod 237 is fixed to the rear end of the right portion of the front rod 235 and the lower end of the right portion of the right mounting plate 236 with bolts, respectively.

As shown in FIGS. 5 and 6, the second height changing device 28 includes a second cover cylinder 43, a second screw rod 44, a second movable rod 45, and a second operation handle 46. The upper part of the second cover cylinder 43 is pivotally supported by the mast 25. The second screw rod 44 is provided in the second cover cylinder 43, and can be rotated around the axis by the second operation handle 46. The second movable rod 45 is inserted into the second cover cylinder 43 from the lower end of the second cover cylinder 43, and the upper end portion is screwed into the second screw rod 44. The lower end of the second movable rod 45 is pivotally supported by a bracket plate 47 fixed to the connecting rod 32U.

When the second operating handle 46 is operated to rotate the second screw rod 44, the second movable rod 45 moves forward or backward with respect to the second screw rod 44. When the second movable rod 45 advances, the second movable rod 45 protrudes from the second cover cylinder 43. When the second movable rod 45 retracts, the second movable rod 45 enters the second cover cylinder 43. As a result, the second height changing device 28 expands and contracts, the support frame 26 (rear frame 30) swings up and down, and the heights of the gauge wheels 27L and 27R can be changed. By changing the heights of the gauge wheels 27L and 27R, the height of the ground work machine 2 (the height of the tilling portion 18) can be changed, and the tilling depth can be changed.

The second height changing device 28 can change the height of the ground working machine 2 independently of changing the heights of the transplant frames 69A and 69B by the first height changing device 50 described later. In other words, the height of the ground work machine 2 can be changed by the second height changing device 28 without changing the heights of the transplant frames 69A and 69B by the first height changing device 50. Further, the heights of the transplant frames 69A and 69B can be changed by the first height changing device 50 without changing the height of the ground working machine 2 by the second height changing device 28.

As shown in FIGS. 2 to 4, the transplanting machine 3 includes a plurality of mounting frames 48L and 48R, a toolbar 49, a first height changing device (connecting member) 50, and a plurality of transplanting units 51A and 51B. Have. The plurality of mounting frames 48L and 48R include a first mounting frame 48L and a second mounting frame 48R which is a frame different from the first mounting frame 48L. The plurality of transplant units 51A and 51B include a first transplant unit 51A and a second transplant unit 51B. The toolbar 49 is mounted over the first mounting frame 48L and the second mounting frame 48R. The first transplant unit 51A and the second transplant unit 51B are attached to the toolbar 49. The toolbar 49 is connected to the second support frame 232 by the first height changing device 50.

The first mounting frame 48L is arranged on the left side of the transplanting machine 3 and extends rearward from the left part of the rotary cultivator 2. The first mounting frame 48L has a first member 52, a second member 53, and a third member 239. The front end of the first member 52 can be detachably attached to the upper part of the transmission case 14, and is rotatably pivotally supported around the horizontal axis (the axis extending in the width direction K2) in the attached state. The first member 52 extends rearward from the upper part of the transmission case 14. The upper portion of the second member 53 is connected to the rear end of the first member 52, and extends downward from the rear end. The vertical half of the second member 53 and the vertical half of the vertical frame member 33L are connected by a connecting member 297L. The front end of the third member 239 is connected to the lower end of the second member 53, and extends rearward from the lower end. The third member 239 passes above the horizontal frame member 34C and extends to the rear of the horizontal frame member 34C.

The second mounting frame 48R is arranged on the right side of the transplanting machine 3 and extends rearward from the right part of the rotary tiller 2. The second mounting frame 48R has a fourth member 54, a fifth member 55, and a sixth member 240. The front end of the fourth member 54 can be detachably attached to the upper part of the side frame 15, and is pivotally supported around the center of the horizontal axis in the attached state. The fourth member 54 extends rearward from the upper part of the side frame 15. The upper part of the fifth member 55 is connected to the rear end of the fourth member 54, and extends downward from the rear end. The vertical halfway portion of the fifth member 55 and the vertical halfway portion of the vertical frame member 33R are connected by a connecting member 297R. The front end of the sixth member 240 is connected to the lower end of the fifth member 55, and extends rearward from the lower end. The sixth member 240 passes above the horizontal frame member 34C and extends to the rear of the horizontal frame member 34C.

The toolbar 49 is composed of a square pipe and is mounted between the rear portion of the first mounting frame 48L and the rear portion of the second mounting frame 48R. Specifically, the toolbar 49 is provided from the rear end of the third member 239 to the rear end of the sixth member 240. One end side (left side) of the toolbar 49 is detachably attached to the rear end of the third member 239. The other end side (right side) of the toolbar 49 is detachably attached to the rear end of the sixth member 240.

The first height changing device 50 is a device (member) for changing the height of the transplant frames 69A and 69B, which will be described later, with respect to the ground work machine 2 by changing the height of the toolbar 49. In other words, the first height changing device 50 is a device (member) that changes the height of the plurality of transplanting units 51A and 51B to change the planting depth of the planting device described later. The planting device is a device for planting seedlings in ridges (fields).

As shown in FIGS. 6 and 8, the first height changing device 50 includes a support bracket 56, a telescopic rod 57, and a first operation handle 58.
The support bracket 56 has a bracket main body 60, mounting plates 59L, 59R, 59U, mounting stays 61L, 61R, and support stays 238L, 238R. The lower end of the bracket body 60 is connected to the middle portion of the width direction K2 of the second connection frame member 232B, and extends upward from the lower end. The front portion of the mounting plate 59L is fixed to the left portion of the upper end of the bracket body 60. The front portion of the mounting plate 59R is fixed to the right portion of the upper end of the bracket body 60. The lower surface of the mounting plate 59U is fixed to the upper end of the bracket body 60, the upper end of the mounting plate 59L, and the upper end of the mounting plate 59R. The front portion of the mounting stay 61L is fixed to the mounting plate 59L with bolts. The front portion of the mounting stay 61R is fixed to the mounting plate 59R with bolts. The front end of the support stay 238L is fixed to the left portion of the mast 25. The rear end of the support stay 238L is fixed to the left surface of the bracket body 60 in the middle of the vertical direction. The front end of the support stay 238R is fixed to the right portion of the mast 25. The rear end of the support stay 238R is fixed to the right surface of the bracket main body 60 in the middle in the vertical direction. The support stays 238L and 238R penetrate the case 233A of the operation unit 233 in the front-rear direction.

The telescopic rod 57 has a first cover cylinder 63, a first screw rod 64, and a first movable rod 65. The upper portion of the first cover cylinder 63 is arranged between the mounting stay 61L and the mounting stay 61R. Further, the upper portion of the first cover cylinder 63 is pivotally supported by the mounting stay 61L and the mounting stay 61R so as to be rotatable around the center of the horizontal axis. The first screw rod 64 is installed inside the first cover cylinder 63, and can be rotated around the axis by the first operation handle 58. The first movable rod 65 is inserted into the first cover cylinder 63 from the lower end of the first cover cylinder 63 and is screwed into the first screw rod 64. The lower end of the first movable rod 65 is inserted between the mounting piece 66L and the mounting piece 66R. The lower end of the first movable rod 65 is pivotally supported by the mounting pieces 66L and 66R by a support pin 67 penetrating the first movable rod 65 and the mounting pieces 66L and 66R. The mounting piece 66L and the mounting piece 66R are fixed at intervals near the center of K2 in the width direction on the upper surface of the toolbar 49.

The first operation handle 58 is pivotally supported on the upper portion of the first screw rod 64 via the horizontal shaft 58a. When the first operation handle 58 is used, as shown by the virtual line (dashed line) in FIG. 8, the first operation handle 58 is rotated upward with the horizontal axis 58a as a fulcrum (center). As a result, the first operation handle 58 can be rotated around the axis of the first screw rod 64. Since the first operation handle 58 is at the solid line position in FIG. 16 when not in use, it does not get in the way. Similarly, when the second operation handle 46 is used, it is rotated upward from the position of the solid line in FIG.

When the first operating handle 58 is operated to rotate the first screw rod 64, the first movable rod 65 moves forward or backward with respect to the first screw rod 64. When the first movable rod 65 advances, the first movable rod 65 protrudes from the first cover cylinder 63. When the first movable rod 65 retracts, the first movable rod 65 enters the first cover cylinder 63. Therefore, by rotating the first operation handle 58, the telescopic rod 57 expands and contracts, the first mounting frame 48L and the second mounting frame 48R swing up and down, and the toolbar 49 moves up and down. When the toolbar 49 moves up and down, the first transplant unit 51A and the second transplant unit 51B move up and down. By moving the first transplant unit 51A and the second transplant unit 51B up and down, the heights of the planting devices 68A and 68B provided in the first transplant unit 51A and the second transplant unit 51B are changed, and seedlings are planted. The depth is changed.

Next, the transplant units 51A and 51B will be described.
First, a schematic configuration of the transplant units 51A and 51B will be described.
As shown in FIGS. 2, 3 and 18, the first transplant unit 51A is arranged on the right side of the transplant machine 3. The first transplant unit 51A includes a transplant frame (also referred to as a first transplant frame) 69A, a first transmission shaft 70A, an electric motor (power source) 71, and a planting device (also referred to as a first planting device) 68A. And a seedling supply device (also referred to as a first seedling supply device) 72A, and a plurality of soil covering rings 74A. The first transplant frame 69A is detachably attached to the right portion of the toolbar 49. The first planting device 68A, the first seedling supply device 72A, and the plurality of soil covering rings 74A are provided on the first transplanting frame 69A.

The second transplant unit 51B is a transplant unit provided side by side with respect to the first transplant unit 51A in the width direction K2, and is arranged on the left side of the transplant machine 3. The second transplant unit 51B includes a transplant frame (also referred to as a second transplant frame) 69B, a second transmission shaft 70B, and a planting device (also referred to as a second planting device) 68B different from the first planting device. , A seedling supply device (also referred to as a second seedling supply device) 72A, and a plurality of soil covering rings 74B. The second transplant frame 69B is detachably attached to the left portion of the toolbar 49. The second planting device 68B, the second seedling supply device 72A, and the plurality of soil covering rings 74B are provided on the second transplanting frame 69B.

The transplant machine frame 75 is composed of the first mounting frame 48L, the second mounting frame 48R, the toolbar 49, the first transplant frame 69A, and the second transplant frame 69B. The transplanting machine frame 75 is attached to the rotary tiller 2 (ground work machine) so as to be vertically movable.
Next, the transplant frames 69A and 69B will be described. The transplant frames 69A and 69B are provided behind the ground work machine 2. First, the first transplant frame 69A, which is the transplant frame of the first transplant unit 51A, will be described.

As shown in FIGS. 10 to 12, the first transplant frame 69A has a frame mounting portion (mounting portion) 76, a main frame 77, and a planting frame 78.
The frame mounting portion 76 is a portion to be mounted on the toolbar 49, and has a mounting plate 79 and a plurality of mounting tools 80L and 80R. In the present embodiment, there are two attachments (the first attachment 80L on the left and the second attachment 80R on the right), but an additional attachment is added between the first attachment 80L and the second attachment 80R. It may be provided. In the present embodiment, the mounting plate 79 has a substantially rectangular shape, and is arranged so that the long side faces the width direction K2 and the short side faces the vertical direction. The front surface of the mounting plate 79 contacts the rear surface of the toolbar 49. The mounting plate 79 has through holes in the vicinity of the four corners. The fixtures 80L and 80R are formed by bending a metal rod, and have an upper rod portion 80U, a lower rod portion 80D, and a front rod portion 80F. The upper bar portion 80U extends in the front-rear direction and abuts on the upper surface of the toolbar 49. The lower bar portion 80D extends in the front-rear direction and abuts on the lower surface of the toolbar 49. Threaded portions are formed at the rear end of the upper rod portion 80U and the rear end of the lower rod portion 80D, respectively. The front rod portion 80F extends in the vertical direction and comes into contact with the front surface of the toolbar 49. The front rod portion 80F connects the front end of the upper rod portion 80U and the front end of the lower rod portion 80D. The upper rod portion 80U and the lower rod portion 80D penetrate through the through holes formed in the mounting plate 79, and the threaded portion at the rear end projects rearward of the mounting plate 79. The fixture 80 is attached to the toolbar 49 by screwing nuts 100 into the threaded portions of the upper rod portion 80U and the lower rod portion 80D, respectively. As a result, the frame mounting portion 76 is mounted on the toolbar 49.

The planting frame 78 shown in FIG. 11 is a frame to which the first planting device 68A is attached. The planting frame 78 includes a first vertical member 92, a second vertical member 93, a third vertical member 94, a fourth vertical member 95, a fifth vertical member 96, a first horizontal member 97, and a second. It has a horizontal member 98, a first connecting member 241, a second connecting member 242, a third connecting member 243, a fourth connecting member 244, a fifth connecting member 245, and a central member 247.

The central member 247 extends in the front-rear direction through the central portion of the planting frame 78 in the width direction K2 (the intermediate point between the two fixtures 80). The central member 247 is arranged above the toolbar 49 and extends in a direction (front-back direction) orthogonal to the toolbar 49.
The first lateral member 97 is arranged above the central member 247 and extends in a direction orthogonal to the central member 247 (width direction K2). A fixing plate 249R is fixed to the lower surface of the first horizontal member 97 near the center in the extending direction (width direction K2), and extends downward from the lower surface. Two fixing plates 249 are provided at intervals in the width direction K2. The front portion of the central member 247 is fixed between the two fixing plates 249.

The second horizontal member 98 is arranged behind the first horizontal member 97 and in parallel with the first horizontal member 97. The second horizontal member 98 is arranged above the central member 247 and extends in a direction orthogonal to the central member 247 (width direction K2).
The upper end of the first vertical member 92 is fixed to the left portion of the lower surface of the first horizontal member 97, and extends downward from the left portion. The lower portion of the first vertical member 92 is fixed to the left portion of the mounting plate 79. The upper end of the second vertical member 93 is fixed to the right portion of the lower surface of the first horizontal member 97, and extends downward from the right portion. The lower portion of the second vertical member 93 is fixed to the right portion of the mounting plate 79. The third vertical member 94 is arranged between the first vertical member 92 and the second vertical member 93. The upper end of the third vertical member 94 is fixed to the central portion of the lower surface of the first horizontal member 97 in the width direction K2, and extends downward from the central portion.

The fourth vertical member 95 is arranged behind the second vertical member 93. The upper end of the fourth vertical member 95 is fixed to the right portion of the lower surface of the second horizontal member 98, and extends downward from the right portion. The fifth vertical member 96 is arranged behind the third vertical member 94 and to the left of the fourth vertical member 95. The upper end of the fifth vertical member 96 is fixed to the central portion of the lower surface of the second horizontal member 98 in the width direction K2, and extends downward from the central portion.

The first connecting member 241 connects the first vertical member 92 and the third vertical member 94. The second connecting member 241 connects the first vertical member 92 and the third vertical member 94 below the first connecting member 241. The third connecting member 243 connects the fourth vertical member 95 and the fifth vertical member 96. The fourth connecting member 244 connects the fourth vertical member 95 and the fifth vertical member 96 below the third connecting member 243. The fifth connecting member 245 connects the second vertical member 93 and the fourth vertical member 95.

The main frame 77 is a frame to which the first seedling supply device 72A and a plurality of soil covering rings 74A are attached. The main frame 77 has a first frame material 81 to an eleventh frame material 91. The first frame material 81 to 11th frame material 91 are formed of a square pipe material.
The first frame member 81 is fixed to the central portion of the rear surface of the mounting plate 79 in the width direction K2, and extends rearward from the central portion. The front portion of the second frame member 82 is fixed to the left end of the first lateral member 97, and extends rearward from the left end. The front portion of the third frame member 83 is fixed to the right end of the first lateral member 97, and extends rearward from the right end. A support member 250 is provided in the middle of the front and rear of the second frame member 82 so as to project downward. A support member 251 is provided in the middle of the front and rear of the third frame member 83 so as to project downward. The support member 250 is located in front of the second lateral member 98, and the support member 251 is located behind the second lateral member 98.

The fifth frame member 85 is arranged in front of the second lateral member 98, and connects the lower portion of the support member 250 and the central member 247. The sixth frame member 86 is arranged behind the second lateral member 98, and connects the lower portion of the support member 251 and the central member 247.
The seventh frame member 87 connects the first frame member 81 and the central member 247. Specifically, the upper end of the seventh frame member 87 is fixed to the central member 247, and the lower end is fixed to the first frame member 81.

The eighth frame member 88 extends in the width direction K2, and connects the vicinity of the rear end of the second frame member 82 and the vicinity of the rear end of the third frame member 83. A fixing plate 251 is fixed to the lower surface of the eighth frame member 88 near the center in the extending direction (width direction K2), and extends downward from the lower surface. Two fixing plates 251 are provided at intervals in the width direction K2. The rear portion of the central member 247 is fixed between the two fixing plates 251.

The upper end of the ninth frame member 89 is fixed at a position closer to the rear part of the lower surface of the second frame member 82, and extends downward from the position. The upper end of the tenth frame member 90 is fixed at a position near the rear end of the lower surface of the central member 247, and extends downward from the position. The upper end of the eleventh frame member 91 is fixed to the rear end of the lower surface of the third frame member 83, and extends downward from the rear end.

The transplant frame 69A has a left frame support 73AL and a right frame support 73AR.
The frame support portion 73AL extends in the width direction K2 and is attached to the seventh frame member 87 and the ninth frame member 89. The right end of the frame support portion 73AL is fixed to the seventh frame member 87. The middle portion of the frame support portion 73AL in the width direction K2 is fixed to the ninth frame member 89. The left end of the frame support portion 73AL projects to the left from the ninth frame material 89. The left soil covering ring 74AL is attached to the frame supporting portion 73AL via the soil covering frame 400AL.

The frame support portion 73AR extends in the width direction K2 behind the frame support portion 73AL, and is attached to the tenth frame member 90 and the eleventh frame member 91. The left end of the frame support portion 73AR is fixed to the tenth frame material 90. The middle portion of the frame frame support portion 73AR in the width direction K2 is fixed to the eleventh frame member 91. The right end of the frame support portion 73AL projects to the right from the eleventh frame member 91. The right soil covering ring 74AR is attached to the frame supporting portion 73AR via the soil covering frame 400AR.

Next, the second transplant frame 69B, which is the transplant frame of the second transplant unit 51B, will be described.
Like the first transplant frame 69A, the second transplant frame 69B also has a frame mounting portion (mounting portion) 76, a main frame 77, and a planting frame 78. Since the configurations of the frame mounting portion 76, the main frame 77, and the planting frame 78 are the same as those described above, the description thereof will be omitted.

A second seedling supply device 72B and a plurality of soil covering rings 74B are attached to the main frame 77 of the second transplanting frame 69B. A second planting device 68B is attached to the planting frame 78 of the second transplanting frame 69B.
Next, the power transmission system of the first transplant unit 51A and the second transplant unit 51B will be described.

As shown in FIG. 9A, the first transmission shaft 70A of the first transplant unit 51A extends in the width direction K2, one end side (left side) is supported by the first bearing 101, and the other end side (right side) is the first. It is supported by two bearings 102. The first bearing 101 is attached to the third frame material 83. The second bearing 102 is attached to the central member 247. The right end side of the first transmission shaft 70A projects to the right (outward in the width direction) from the second bearing 102. The left end side of the first transmission shaft 70A projects to the left (inward in the width direction) from the first bearing 101.

The second transmission shaft 70B of the second transplant unit 51B extends in the width direction K2, and the left end side is supported by the third bearing 103 and the right end side is supported by the fourth bearing 104. The third bearing 103 is attached to the central member 247. The fourth bearing 104 is attached to the second frame material 82. The left end side of the second transmission shaft 70B projects to the left (outward in the width direction) from the third bearing 103. The right end side of the second transmission shaft 70B projects inward (to the right) in the width direction from the fourth bearing 104.

As shown in FIG. 9A, the left end side of the first transmission shaft 70A and the right end side of the second transmission shaft 70B face each other and are detachably connected by a connecting pipe (connecting member) 105. The first transmission shaft 70A, the second transmission shaft 70B, and the connecting pipe 105 form a planting drive shaft 108 to which power from the electric motor (power source) 71 is transmitted and drives the planting devices 68A and 68B. There is.

As shown in FIGS. 9A, 13 and 14, the electric motor 71 is a power source for the transplanter 3 and is a power source provided separately from the power source for the tractor 1 (motor E1 described later). The electric motor 71 drives devices such as a planting device (a device for planting seedlings in ridges) and a seedling supply device (a device for supplying seedlings to the planting device) equipped in the transplanting machine 3. The electric motor 71 is attached to a mounting plate 106A attached to the front portion of the first vertical member 92 and the third vertical member 94 in the first transplant unit 51A. That is, the electric motor (power source) 71 is provided in the transplant frame (first transplant frame 69A).

The electric motor 71 is provided with an output shaft 107. A second output shaft 253 is provided above the output shaft 107 in parallel with the output shaft 107. The second output shaft 253 is supported by the support cylinder 254A. The support cylinder 254A holds a pair of bearings that support the second output shaft 253. The right end side of the support cylinder 254A is supported by a central member 247 (hereinafter, referred to as a central member 247A) in the first transplant unit 51A. The left end side of the support cylinder 254A is supported by a stay 255A fixed to the first vertical member 92 in the first transplant unit 51A.

A third output shaft (output shaft) 261 is provided at the front portion of the second transplant unit 51B. The third output shaft 261 is supported by a support cylinder 254B. The support cylinder 254B holds a pair of bearings that support the third output shaft 261. The right end side of the support cylinder 254B is supported by a central member 247 (hereinafter, referred to as a central member 247B) in the second transplant unit 51B. The left end side of the support cylinder 254B is supported by a stay 255B fixed to the first vertical member 92 in the second transplant unit 51B.

As shown in FIGS. 9A and 9B, the output shaft 107 of the electric motor 71 is provided with a first sprocket 114. A second sprocket 115 is provided on the left end side of the second output shaft 253. A third sprocket 116 is provided on the right end side of the second output shaft 253. A fourth sprocket 117 is arranged to the right of the third sprocket 116. The fourth sprocket 117 is attached to the mounting plate 106A via the bracket 258A. The rotation shaft of the fourth sprocket 117 and the second output shaft 253 are arranged in orthogonal directions, and are interlocked and connected by a gear mechanism 259A.

The first transmission shaft 70A is provided with a seventh sprocket 120, an eighth sprocket 121, and a ninth sprocket 122.
As shown in FIGS. 9A and 10, the central member 247A in the first transplant unit 51A is provided with the support member 256A and the support member 257A protruding downward. A support member 256B and a support member 257B are provided on the central member 247B of the second transplant unit 51B so as to project downward. The support members 256A and 256B are provided between the third vertical member 94 and the fifth vertical member 96. The support members 257A and 257B are provided behind the fifth vertical member 96.

As shown in FIGS. 9A and 9B, the support member 256A is provided with a fifth sprocket 118. The support member 257A is provided with a sixth sprocket 119. A fifth bearing 272 is provided behind the support member 257A. The fifth bearing 272 is attached to the central member 247A. The fifth bearing 272 supports the third transmission shaft 260. The third transmission shaft 260 is provided with a tenth sprocket 123 and an eleventh sprocket 124.

A twelfth sprocket 125 is provided on the right end side of the third output shaft 261 of the second transplant unit 51B. The 13th sprocket 126 is arranged to the right of the 12th sprocket 125. The thirteenth sprocket 126 is attached to the mounting plate 106B via the bracket 258B. The rotation shaft of the thirteenth sprocket 126 and the third output shaft 261 are arranged in orthogonal directions, and are interlocked and connected by a gear mechanism 259B. The gear mechanism 259B constitutes a power transmission unit that transmits power from the output shaft (third output shaft 261) to the seedling supply device (second seedling supply device 72B).

In the second transplant unit 51B, the support member 256B is provided with a fifteenth sprocket 264. The support member 257B is provided with a 16th sprocket 265. A sixth bearing 262 is arranged behind the support member 257B. The sixth bearing 262 is attached to the central member 247B. The sixth bearing 262 supports the fourth transmission shaft 263. The fourth transmission shaft 263 is provided with a 17th sprocket 266 and an 18th sprocket 267.

The second transmission shaft 70B is provided with a 19th sprocket 268, a 20th sprocket 269, and a 21st sprocket 270.
As shown in FIG. 9B, the rotational power of the electric motor 71 is transmitted from the first sprocket 114 to the second sprocket 115 via the first chain 129, and the second output shaft 253 rotates. The power of the second output shaft 253 is transmitted from the third sprocket 116 to the seventh sprocket 120 via the second chain 127 and the fifth sprocket 118 (see FIG. 9A), and the first transmission shaft 70A rotates. Further, the power of the second output shaft 253 is transmitted to the rotating shaft of the fourth sprocket 117 via the gear mechanism 259A, and the fourth sprocket 117 rotates.

The power of the first transmission shaft 70A is transmitted from the eighth sprocket 121 to the sixth sprocket 119 and the tenth sprocket 123 via the third chain 128. The power transmitted to the tenth sprocket 123 is transmitted to the eleventh sprocket 124 via the third transmission shaft 260. Further, the power of the first transmission shaft 70A is transmitted from the ninth sprocket 122 to the 22nd sprocket 271 (see FIG. 19) via the fourth chain 130. Further, the power of the third transmission shaft 260 is transmitted from the 11th sprocket 124 to the 23rd sprocket 274 (see FIG. 19) via the 8th chain 273. Further, the power of the first transmission shaft 70A is transmitted to the second transmission shaft 70B via the connecting pipe 105.

The power of the second transmission shaft 70B is transmitted from the 19th sprocket 268 to the 12th sprocket 125 via the 5th chain 132 and the 15th sprocket 264 (see FIG. 9A). The 19th sprocket 268, the 5th chain 132, the 15th sprocket 264, and the 12th sprocket 125 constitute a power extraction unit 109 that extracts power from the middle portion of the planting drive shaft 108.

The power transmitted to the 12th sprocket 125 is transmitted from the 3rd output shaft 261 to the 13th sprocket 126 via the gear mechanism 259B. Further, the power of the second transmission shaft 70B is transmitted from the 20th sprocket 269 to the 17th sprocket 266 via the 6th chain 134. The power transmitted to the 17th sprocket 266 is transmitted to the 18th sprocket 267 via the 4th transmission shaft 263. Further, the power of the second transmission shaft 70B is transmitted from the 21st sprocket 270 to the 24th sprocket 277 (see FIG. 19) via the 7th chain 136. Further, the power of the fourth transmission shaft 263 is transmitted from the 18th sprocket 267 to the 24th sprocket 276 (see FIG. 19) via the 9th chain 275.

Next, the planting devices 68A and 68B will be described. First, the first planting device 68A, which is the planting device of the first transplanting unit 51A, will be described.
As shown in FIG. 15, the first planting device 68A has a plurality of (two in this embodiment) planting mechanisms 68AL and 68AR. Hereinafter, the planting mechanism 68AL is referred to as a first planting mechanism 68AL, and the planting mechanism 68AR is referred to as a second planting mechanism 68AR. The first planting mechanism 68AL is a planting mechanism located on the left side. The second planting mechanism 68AR is a planting mechanism located on the right side. The first planting mechanism 68AL and the second planting mechanism 68AR are arranged side by side in the width direction K2. The first planting mechanism 68AL and the second planting mechanism 68AR are arranged at different positions in the front-rear direction K1. That is, the second planting mechanism 68AR is attached to the transplant frames 69A and 69B in parallel with the first planting mechanism AL and at different positions in the front-rear direction from the first planting mechanism AL. In the present embodiment, the second planting mechanism 68AR is arranged behind the first planting mechanism 68AL, but even if the second planting mechanism 68AR is arranged in front of the first planting mechanism 68AL. Good.

As shown in FIGS. 10 and 15, the first planting mechanism 68AL has a planting tool 137 (one planting tool), a support 138, and an elevating device 139. The second planting mechanism 68AR, like the first planting mechanism 68AL, has a planting tool 137 (one planting tool), a support 138, and an elevating device 139. Hereinafter, the planting tool 137 in the first planting mechanism 68AL may be referred to as a first planting tool 137AL, and the planting tool 137 in the second planting mechanism 68AR may be referred to as a second planting tool 137AR. Further, the elevating device 139 in the first planting mechanism 68AL may be referred to as a first elevating device 139AL, and the elevating device 139 in the second planting mechanism 68AR may be referred to as a second elevating device 139AR.

The first planting device 68A (first planting tool 137AL, second planting tool 137AR) is a device for planting seedlings in a field, and in the present embodiment, seedlings are planted in ridges R1 (first ridges R11). .. The planting tool 137 has a beak shape with its tip facing downward, and has a front component 140 and a rear component 141. The planting tool 137 can be opened and closed by separating and approaching the front component 140 and the rear component 141 in the front-rear direction K1. Further, the planting tool 137 is capable of supplying seedlings from above and accommodating seedlings inside in a closed state. In addition, the planting tool 137 is capable of dropping seedlings downward and releasing them in an open state.

As shown in FIGS. 12 and 15, the front portion of the support 138 in the first planting mechanism 68AL is fixed to the first connecting member 241 and the second connecting member 242 of the planting frame 78 with bolts. The front portion of the support 138 in the second planting mechanism 68AR is fixed to the third connecting member 243 and the fourth connecting member 244 of the planting frame 78 with bolts. Here, the third connecting member 243 and the fourth connecting member 244 are located behind the first connecting member 241 and the second connecting member 242. Therefore, the support 138 in the second planting mechanism 68AR is located behind the support 138 in the first planting mechanism 68AL. As a result, the second planting mechanism 68AR is located behind the first planting mechanism 68AL. As shown in FIG. 10, the magnitude of the deviation between the first planting mechanism 68AL and the second planting mechanism 68AR in the front-rear direction is such that the first planting tool 137AL and the second planting tool 137AR are at bottom dead center. At some point, it is set so that it does not overlap in the side view. The mounting position of each support 138 can be changed in the width direction K2 with respect to the planting frame 78. By changing the mounting position of the support 138, the spacing between the rows of the planted seedlings (the spacing in the width direction K2 of the planted seedlings) can be changed.

Further, as shown in FIG. 15, the two planting mechanisms 68AL and 68AR have a left vertical member (first vertical member 92 and a third vertical member 94) and a central vertical member (third vertical member) in the width direction. It is supported by a member 94, a fifth vertical member 96) and a vertical member on the right side (fourth vertical member 95). That is, the central vertical member (third vertical member 94, fifth vertical member 96) in the width direction supports both of the two planting mechanisms 68AL and 68AR. As a result, the two planting mechanisms (first planting mechanism 68AL and second planting mechanism 68AR) are supported at three locations (left, center, and right) in the width direction.

As shown in FIGS. 10 and 15, in the first transplant unit 51A, the 22nd sprocket 271 is supported by the support shaft 142 on the support 138 of the first planting mechanism 68AL. Further, the 23rd sprocket 274 is supported by the support shaft 142 on the support 138 of the second planting mechanism 68AR.
The elevating device 139 (first elevating device 139AL, second elevating device 139AR) is a device that supports the planting tool 137 and moves the planting tool 137 up and down (reciprocating up and down). Specifically, the first lifting device 139AL is a device for raising and lowering the first planting tool 137AL, and the second lifting device 139AR is a device for raising and lowering the second planting tool 137AR. The elevating device 139 is attached to the support 138. The elevating device 139 has a first case 143, a second case 144, and a mounting member 145. The first case 143 is rotatably supported by the support 138 via the support shaft 142. The second case 144 is rotatably supported on the free end side of the first case 143. The mounting member 145 is supported by the second case 144. The planting tool 137 is supported by the mounting member 145. Further, the mounting member 145 is provided with a seedling guide 146 located above the planting tool 137. The seedling guide 146 is formed in a tubular shape with a narrowed tip toward the bottom, and guides the seedlings supplied to the planting tool 137 from above to the planting tool 137. The mounting member 145 is urged upward by a spring.

When the first case 143 is rotated by the support shaft 142, the first case 143 and the second case 144 are rotated in the direction opposite to that of the first case 143 in conjunction with the rotation of the first case 143. A power transmission mechanism is provided inside. Further, as the first case 143 and the second case 144 are rotated, the mounting member 145 moves up and down in parallel, and the planting tool 137 moves up and down.

FIG. 16 shows one cycle of operation of the planting tool 137. That is, the planting tool 137 moves up and down from the raised position (top dead center position) G1 through the lowered position (bottom dead center position) G2 to return to the top dead center position G1.
Seedlings are dropped and supplied to the planting tool 137 at the top dead center position G1. At this time, the planting tool 137 is in a closed state, and the seedlings are held inside the planting tool 137. After that, the planting tool 137 descends while holding the seedlings, and the lower portion of the planting tool 137 rushes into the ridge R1 (field). When the planting tool 137 rushes into the ridge R1, it opens to form a planting hole in the ridge R1 and releases the seedling N1 into the planting hole (planting the seedling).

By repeating this ascending / descending operation while traveling, the seedling N1 is planted in the longitudinal direction of the ridge R1.
As described above, the first planting mechanism 68AL and the second planting mechanism 68AR are arranged side by side in the width direction K2, and are arranged at different positions in the front-rear direction K1. As a result, one transplanting unit is used to plant two seedlings in a staggered pattern on the ridge (one of the adjacent seedlings is planted in the width direction K2 with the position shifted to the front and back with respect to the other).

Then, the first planting mechanism 68AL and the second planting mechanism 68AR are arranged at different positions in the front-rear direction K1, and the first planting mechanism 68AL and the second planting mechanism 68AR are supported at three positions in the width direction. Therefore, the first planting mechanism 68AL and the second planting mechanism 68AR can be arranged close to each other in the width direction K2. Therefore, seedlings with a narrow inter-row distance can be planted. Further, since the width (length of K2 in the width direction) of the transplant frame 69A to which the first planting mechanism 68AL and the second planting mechanism 68AR are attached can be shortened, the transplanting work machine 4 can be made compact in the width direction K2. It is possible to configure in.

In this embodiment, the left and right planting tools 137 (first planting tool 137AL and second planting tool 137AR) move up and down at the same time. Further, when the planting tool 137 is stopped, the left and right planting tools 137 are stopped at the top dead center position G1. The planting tool 137 must be stopped in order to perform inter-stock control, but stopping the planting tool 137 at an intermediate position in the vertical movement range may cause a problem. For example, when planting seedlings of hard-stem vegetables such as tomatoes and peppers, if the planting tool 137 stops at an intermediate position in the vertical movement range, the planting tool 137 hits the stems of the planted seedlings and the seedlings collapse. There is a risk. In the present embodiment, the first planting tool 137AL and the second planting tool 137AR are moved back and forth, and the first planting tool 137AL and the second planting tool 137AR are raised and lowered at the same time to realize staggered planting. Therefore, the planting tool 137 (the first planting tool 137AL and the second planting tool 137AR) can be stopped at the top dead center position G1. This makes it possible to prevent the seedlings from falling over.

A mechanism for stopping the first planting tool 137AL and the second planting tool 137AR at the top dead center position G1 (hereinafter, referred to as a planting tool stopping mechanism 285) will be described.
As shown in FIGS. 13 and 14, the planter stop mechanism 285 includes a mounting member 286, a support rod 287, a nut 288U, 288D, a swing member 289, a support shaft 290, a roller 291 and a spring 292, and a cam 293. are doing. The mounting member 286 is fixed in the vicinity of the front end of the central member 247A. A through hole is formed in the mounting member 286, and a support rod 287 is inserted through the through hole in the vertical direction. The support rod 287 has a screw portion 287a on one end side and a locking hole 287b on the other end side. Nuts 288U and 288D are screwed into the threaded portion 287a of the support rod 287. The nut 288U is in contact with the upper surface of the mounting member 286, and the nut 288D is in contact with the lower surface of the mounting member 286. The support rod 287 is attached to the attachment member 286 by sandwiching the attachment member 286 between the nut 288U and the nut 288D. The vertical position of the locking hole 287b can be changed by moving the nut 288U and the nut 288D with respect to the screw portion 287a to change the vertical position of the support rod 287 with respect to the mounting member 286. The urging force of the spring 292 can be adjusted by changing the vertical position of the locking hole 287b. One end side (front end side) of the swing member 289 is pivotally supported by the bracket 258A via a support shaft 290. The swing member 289 can swing up and down with the support shaft 290 as a fulcrum (center). A locking hole 289a is provided on the other side (rear end side) of the swing member 289. A roller 291 is rotatably attached between one end and the other end of the swing member 289. One end side of the spring 292 is locked in the locking hole 287b of the support rod 287, and the other end side is locked in the locking hole 289a of the swing member 289. The cam 293 is attached to the second output shaft 253 and rotates together with the second output shaft 253. The cam 293 has an arcuate recess 293a on the outer circumference. A force (see arrow A2 in FIG. 13) is applied to the swing member 289 by the urging force of the spring 292 to swing upward with the support shaft 290 as the fulcrum (center). By this force, the roller 291 is pressed against the outer circumference of the cam 293.

When the electric motor 71 is stopped, the roller 291 is pressed against the outer circumference of the cam 293 by the urging force of the spring 292, and rotates in the direction of arrow B1 in FIG. As the roller 291 rotates, the cam 293 rotates in the direction opposite to that of the roller 291 (direction of arrow C1 in FIG. 13). The roller 291 and the cam 293 rotate in opposite directions, so that the roller 291 moves along the outer circumference of the cam 293. The roller 291 moves along the outer circumference of the cam 293, and then fits into the recess 293a to stop the movement. When the movement of the roller 291 is stopped, the rotation of the cam 293 is stopped. As a result, the rotation of the second output shaft 253 is stopped, and the movement of the first planting tool 137AL is stopped. Therefore, by appropriately setting the relationship between the position of the recess 293a (the position on the outer circumference of the cam 293) and the vertical position of the first planting tool 137AL and the second planting tool 137AR, the first planting is performed. The tool 137AL and the second planting tool 137AR can be stopped at the top dead center position G1.

Further, as shown in FIG. 13, the first planting device 68A has an ascending assisting mechanism 294 that assists the ascending operation when the first planting tool 137AL and the second planting tool 137AR move up and down. .. The ascending assist mechanism 294 has a rotating plate 295 and a spring 296. The rotary plate 295 is attached to the first transmission shaft 70A and rotates together with the first transmission shaft 70A. One end of the spring 296 is locked to the rotating plate 295, and the other end of the spring 296 is locked to the central member 247A. The spring 296 expands and contracts as the first planting tool 137AL and the second planting tool 137AR move up and down as the first transmission shaft 70A rotates. Specifically, the spring 296 extends when the first planting tool 137AL and the second planting tool 137AR are lowered, and shortens when the first planting tool 137AL and the second planting tool 137AR are raised. .. Therefore, when the first planting tool 137AL and the second planting tool 137AR are lowered, the ascending operation is assisted by the urging force (pulling force) of the spring 296. As a result, a force (gravity) that assists the lowering motion by its own weight acts on the first planting tool 137AL and the second planting tool 137AR when descending, and a force that assists the ascending motion by the urging force of the spring 296 when ascending. Will act, so the ascending / descending operation will be performed smoothly.

Next, the second planting device 68B, which is the planting device of the second transplanting unit 51B, will be described.
As shown in FIG. 15, the second planting device 68B also has a plurality of (two in this embodiment) planting mechanisms 68BL and 68BR, similarly to the first planting device 68A. The planting mechanisms 68BL and 68BR are arranged side by side in the width direction K2. Hereinafter, the planting mechanism 68BL is referred to as a first planting mechanism 68BL, and the planting mechanism 68BR is referred to as a second planting mechanism 68BR. The first planting mechanism 68BL is a planting mechanism located on the left side. The second planting mechanism 68BR is a planting mechanism located on the right side. The first planting mechanism 68BL and the second planting mechanism 68BR are arranged side by side in the width direction K2. The first planting mechanism 68BL and the second planting mechanism 68BR are arranged at different positions in the front-rear direction K1. In the present embodiment, the second planting mechanism 68BR is arranged behind the first planting mechanism 68BL, but even if the second planting mechanism 68BR is arranged in front of the first planting mechanism 68BL. Good.

Like the first planting mechanism 68AL, the first planting mechanism 68BL has a planting tool 137 (another planting tool), a support 138, and an elevating device 139. The second planting mechanism 68BR, like the second planting mechanism 68AR, has a planting tool 137 (another planting tool), a support 138, and an elevating device 139. The planting tool 137 in the first planting mechanism 68BL may be referred to as a first planting tool 137BL, and the planting tool 137 in the second planting mechanism 68BR may be referred to as a second planting tool 137BR. Further, the elevating device 139 in the first planting mechanism 68BL may be referred to as a first elevating device 139BL, and the elevating device 139 in the second planting mechanism 68BR may be referred to as a second elevating device 139BR.

The second planting device 68B (first planting tool 137BL, second planting tool 137BR) is a device for planting seedlings in a field, and in the present embodiment, seedlings are planted in ridges R1 (second ridges R12). ..
Since the planting tool 137, the support 138, and the elevating device 139 have the same configuration as described above, the description thereof will be omitted. Further, the second planting device 68B also has a planting tool stopping mechanism 285 and a raising assisting mechanism 294, similarly to the first planting device 68A. Since the planter stop mechanism 285 and the lift assist mechanism 294 have the same configuration as described above, the description thereof will be omitted.

As shown in FIGS. 10 and 15, in the second transplanting unit 51B, the 24th sprocket 277 is supported by the support shaft 142 on the support 138 of the first planting mechanism 68BL. Further, the 24th sprocket 276 is supported by the support shaft 142 on the support 138 of the second planting mechanism 68BR.
Next, the seedling supply devices 72A and 72B will be described. First, the first seedling supply device 72A, which is the seedling supply device of the first transplant unit 51A, will be described.

The first seedling supply device 72A is arranged above the first planting device 68A. The first seedling supply device 72A drops and supplies seedlings to the planting tool 137 (first planting device 68A) located below. The first seedling supply device 72A is supported above the second frame material 82, the third frame material 83, the eighth frame material 88, and the first horizontal member 97 shown in FIG. 11 via a frame.

As shown in FIG. 17, the first seedling supply device 72A has a large number of supply cups 147,148 into which seedlings are put. The large number of supply cups 147,148 includes a large number of first supply cups 147 and a large number of second supply cups 148. The first supply cup 147 and the second supply cup 148 are arranged along a long loop-shaped path P1 in the front-rear direction. Specifically, the first supply cup 147 and the second supply cup 148 are arranged side by side in a loop so as to exhibit a long oval shape in the front-rear direction K1 in a plan view. Further, the first supply cup 147 and the second supply cup 148 are alternately arranged along the oval arrangement path P1.

The first supply cup 147 and the second supply cup 148 are intermittently transferred in the direction of arrow Y1 along the long loop-shaped path (oval arrangement path) P1 in the front-rear direction by the transfer mechanism 149. The transfer mechanism 149 has a first rotating body 150, a second rotating body 151, and a cord body 152. The first rotating body 150 and the second rotating body 151 are composed of sprockets. The cord 152 is composed of an endless chain. The first rotating body 150 and the second rotating body 151 are rotatably supported around the vertical axis (vertical center) by the frame supporting the first seedling supply device 72A. The first rotating body 150 is located at the front portion of the transfer mechanism 149, and the second rotating body 151 is arranged behind the first rotating body 150. The cord 152 is hung over the first rotating body 150 and the second rotating body 151. The first supply cup 147 and the second supply cup 148 are arranged along the cord 152 on the outer peripheral side of the cord 152.

A drive sprocket 153 is provided below the first rotating body 150. The drive sprocket 153 is integrally rotatably connected to the first rotating body 150 via the third drive shaft 154. Power is transmitted to the drive sprocket 153 via the ninth chain 155, and the first rotating body 150 rotates.
In the first transplant unit 51A, power is transmitted from the fourth sprocket 117 to the drive sprocket 153 via the ninth chain 155. In the second transplant unit 51B, power is transmitted from the 13th sprocket 126 to the drive sprocket 153 via the 9th chain 155.

As shown in FIG. 18, the first supply cup 147 has a housing portion 156, a mounting portion 157, and a lid 158. The second supply cup 148 also has a housing portion 160, a mounting portion 161 and a lid 162 in the same manner. The accommodating portions 156 and 160 are portions for accommodating the introduced seedlings, and are composed of vertically open cylinders. The attachment portions 157 and 161 are portions to be attached to the cord 152. The lids 158 and 162 are members that close the bottom of the accommodating portions 156 and 160. The lids 158 and 162 are pivotally supported by hinges 159 at the lower part of the accommodating portions 156 and 160 so that the lower end opening of the accommodating portions 156 and 160 can be opened and closed. By closing the lids 158 and 162, seedlings can be held in the accommodating portions 156 and 160, and by opening the lids 158 and 162, seedlings can be discharged downward from the accommodating portions 156 and 160.

As shown in FIG. 19, the lid 158 of the first supply cup 147 has a first engaging portion 163. The lid 162 of the second supply cup 148 has a second engaging portion 164. The first engaging portion 163 projects toward the inner peripheral side of the arrangement path (cord body 152) of the supply cups 147 and 148. The second engaging portion 164 projects toward the outer peripheral side of the arrangement path (cord body 152) of the supply cups 147 and 148.

The lid 158 of the first supply cup 147 opens on the left side of the first rotating body 150 and the second rotating body 151 (one side in the width direction of the first rotating body 150 and the second rotating body 151). The position indicated by reference numeral X1 is the first open position (open position on one side in the width direction of the first rotating body 150 and the second rotating body 151) at which the lid 158 of the first supply cup 147 opens. The lid 158 of the second supply cup 148 opens on the right side of the first rotating body 150 and the second rotating body 151 (the other side in the width direction of the first rotating body 150 and the second rotating body 151). The position indicated by reference numeral X2 is the second open position (open position on the other side in the width direction of the first rotating body 150 and the second rotating body 151) at which the lid 158 of the second supply cup 148 opens.

The first open position X1 (open position on one side in the width direction) and the second open position X2 (open position on the other side in the width direction) of the first seedling supply device 72A are set to different positions in the front-rear direction K1. .. In the present embodiment, the second open position X2 is displaced rearward with respect to the first open position X1. The second planting mechanism 68AR of the planting device 68A corresponds to the rearward displacement of the second open position X2 with respect to the first planting mechanism 68AL. Is misaligned backwards.

Further, the lid 158 of the first supply cup 147 opens at the first open position X1, and the lid 164 of the second supply cup 148 opens at the second open position X2. Further, as described above, the first planting mechanism 68AL and the second planting mechanism 68AR, which are misaligned in the front-rear direction, move up and down at the same time. As a result, staggered planting is realized.
The planting tool 137 (first planting tool 137AL) on the left side of the planting device 68A is located below the first open position X1. The planting tool 137 (second planting tool 137AR) on the right side of the planting device 68A is located below the second open position X2.

The first seedling supply device 72A can set the open positions of the supply cups 147 and 148 to one side and the other side in the width direction of the first rotating body 150 and the second rotating body 151 (first open positions X1, first). It has a setting member 166 (which can set 2 open positions X2). The setting member 166 includes a plurality of regulation rods 167, 168, 169, 170. For convenience of explanation, the regulation rod 167 is the first regulation rod 167, the regulation rod 168 is the second regulation rod 168, the regulation rod 169 is the third regulation rod 169, and the regulation rod 170 is the fourth regulation rod 170. It's called 170.

The first regulation rod 167 abuts on the lower surfaces of the lids 158 and 162 of the first supply cup 147 and the second supply cup 148 on the front side of the first open position X1 and the second open position X2. Therefore, the first regulation rod 167 regulates the opening of the lids 158 and 162 of the first supply cup 147 and the second supply cup 148 on the front side of the first open position X1 and the second open position X2. The second regulation rod 168 contacts the lower surfaces of the lids 158 and 162 of the first supply cup 147 and the second supply cup 148 on the rear side of the first open position X1 and the second open position X2. Therefore, the second regulation rod 168 regulates the opening of the lids 158 and 162 of the first supply cup 147 and the second supply cup 148 on the rear side of the first open position X1 and the second open position X2.

The third regulation rod 169 is located on the left side of the first open position X1. The third regulation rod 169 comes into contact with the lower surface of the second engaging portion 164 of the lid 162 at the first open position X1. This regulates the opening of the lid 162 of the second supply cup 148 at the first open position X1. The fourth regulation rod 170 is located on the left side of the second open position X2. The fourth regulation rod 170 comes into contact with the lower surface of the first engaging portion 163 of the lid 158 at the second open position X2. This regulates the opening of the lid 158 of the first supply cup 147 at the second open position X2.

The left rear end portion of the first regulation rod 167, the left front end portion of the second regulation rod 168, and the third regulation rod 169 constitute a first setting unit 196 for setting the first open position X1. The right rear end of the first regulation rod 167, the right front end of the second regulation rod 168, and the fourth regulation rod 170 form a second setting unit 197 for setting the second open position X2.
In the first open position X1, the lid 158 of the first supply cup 147 is disengaged from the first regulation rod 167 and the second regulation rod 168, and the first engaging portion 163 is not supported by the third regulation rod 169. This opens the lid 158 of the first supply cup 147. At this time, the first planting tool 137AL has moved to the top dead center position G1, and the seedlings discharged from the first supply cup 147 are supplied to the first planting tool 137AL. Further, when the first supply cup 147 is located at the first open position X1, the second supply cup 148 is located at the second open position X2. At the second open position X2, the lid 162 of the second supply cup 148 is disengaged from the first regulation rod 167 and the second regulation rod 168, and the second engaging portion 164 is not supported by the fourth regulation rod 170. This opens the lid 162 of the second supply cup 148. At this time, the second planting tool 137AR has moved to the top dead center position G1, and the seedlings discharged from the second supply cup 148 are supplied to the second planting tool 137AR.

Further, when the second supply cup 148 is located at the first open position X1, the first supply cup 147 is located at the second open position X2. The second engaging portion 164 of the second supply cup 148 located at the first open position X1 is regulated by the third regulation rod 169, and the lid 162 of the second supply cup 148 does not open. At this time, the first planting tool 137AL below the first open position X1 moves downward to plant seedlings in the ridges. The first engaging portion 163 of the first supply cup 147 located at the second open position X2 is regulated by the fourth regulation rod 170, and the lid 158 of the first supply cup 148 is not opened. At this time, the second planting tool 137AR below the second open position X2 moves downward to plant seedlings in the ridges.

Next, the second seedling supply device 72B, which is the seedling supply device of the second transplant unit 51B, will be described.
The second seedling supply device 72B is arranged above the second planting device 68B. The second seedling supply device 72B drops and supplies seedlings to the planting tool 137 (second planting device 68B) located below. Similar to the first seedling supply device 72A, the second seedling supply device 72B is supported above the second frame material 83, the third frame material 83, the eighth frame material 88, and the first horizontal member 97 via a frame. Has been done.

Since the configuration of the second seedling supply device 72B is the same as the configuration of the first seedling supply device 72A, the description thereof will be omitted.
The supply of seedlings to the first supply cup 147 and the second supply cup 148 in the first seedling supply device 72A and the second seedling supply device 72B is as follows: first front chair 231R, second front chair 231L, first side chair 42R, This is performed by the worker H (see FIG. 7) seated on each of the second side chairs 42L.

The first front chair 231R is located in front of the first seedling supply device 72A (the first rotating body 150). The second front chair 231L is located in front of the second seedling supply device 72B (the first rotating body 150). The first side chair 42R is located on one side (outside in the width direction) of K2 in the width direction of the first seedling supply device 72A (cord body 152). The second side chair 42L is located on the other side (outside in the width direction) of the second seedling supply device 72B (cord body 152) in the width direction K2. As a result, the seedlings can be supplied to the first seedling supply device 72A by the operator seated on the first front chair 231R and the first side chair 42R. Further, the seedlings can be supplied to the second seedling supply device 72B by the worker seated on the second front chair 231L and the second side chair 42L. Therefore, the seedlings can be supplied to the first seedling supply device 72A and the second seedling supply device 72B by a plurality of people, respectively, and the seedling supply work can be efficiently performed.

As shown in FIGS. 4 and 7, above the first seedling supply device 72A, a front seedling tray 278A and a side seedling for placing a seedling tray having a large number of seedlings supplied to the supply cups 147 and 148. A tray 279A is provided. The front seedling loading platform 278A and the side seedling loading platform 279A are attached to the frame of the first seedling supply device 72A. The front seedling loading platform 278A is provided above the front portion of the first seedling supply device 72A, and the width direction K2 is formed longer than the front-rear direction K1. The front seedling stand 278A is inclined so as to be lowered from the rear to the front. The side seedling loading platform 279A is provided above the rear portion of the first seedling supply device 72A, and the front-rear direction K1 is formed longer than the width direction K2. The lateral seedling pedestal 279A is inclined so as to become lower from the inside in the width direction to the outside in the width direction.

As shown in FIGS. 2, 4 and 7, a front seedling loading platform 278B and a side seedling loading platform 279B are also provided above the second seedling supply device 72B. Since the configurations of the front seedling loading platform 278B and the side seedling loading platform 279B are the same as those of the front seedling loading platform 278A and the side seedling loading platform 279A, the description thereof will be omitted.
As shown in FIGS. 2 and 7, a seedling placing portion 280R is provided on one side (right side) of K2 in the width direction of the ground working machine 2. A seedling placing portion 280L is provided on the other side (left side) of K2 in the width direction of the ground working machine 2. The seedling placing portions 280L and 280R have a substrate 281, a support column 282, a support base 283, and a support shaft 284.

The substrate 281 of the seedling placing portion 280L is fixed to the rear end of the first member 52 of the first mounting frame 48L, and projects outward (leftward) in the width direction from the first member 52. The substrate 281 of the seedling placing portion 280R is fixed to the rear end of the fourth member 54 of the second mounting frame 48R, and projects outward (to the right) in the width direction from the fourth member 52. The lower end of the support column 282 is fixed to the substrate 281 and extends upward. A plurality of support bases 283 (four in the present embodiment) are provided. The plurality of support bases 283 are attached to the columns 282 at intervals in the vertical direction. The support base 283 is attached to the support column 282 via the support shaft 284, and can rotate upward and inward in the width direction with the support shaft 284 as a fulcrum (center).

On the support bases 283 of the seedling storage portions 280L and 280R, seedling trays having a large number of seedlings supplied to the supply cups 147 and 148 are placed. The seedling tray placed on the seedling storage section 280L on the left side is empty when the seedlings on the seedling trays 278B and 279B of the second seedling supply device 72B are lost. Replaced with seedling tray. The seedling tray placed on the seedling tray 280R on the right side is empty when the seedlings on the seedling trays 278A and 279A of the first seedling supply device 72A are lost. Replaced with seedling tray.

The first front chair 231R is arranged on the other side (left side) of the seedling placing portion 28R in the width direction K2. The second front chair 231L is arranged on one side (right side) of the seedling placing portion 28L in the width direction K2. As a result, the worker seated on the first front chair 231R can easily take out the seedling tray placed on the seedling storage portion 28R. In addition, the worker seated on the second front chair 231L can easily take out the seedling tray placed on the seedling storage portion 28L.

Next, the soil covering rings 74A and 74B will be described.
First, the soil covering ring 74A of the first transplanting unit 51A will be described. As shown in FIGS. 3 and 4, the soil covering ring 74A includes a soil covering ring 74AL on the left and a soil covering ring 74AR on the right.
Two left soil covering rings 74AL are provided behind the left planting mechanism 68AL in the first transplanting unit 51A. Specifically, the two planting mechanisms 68AL are provided on one side (right side) and the other side (left side) of the eleventh frame 91 shown in FIG. 11, respectively. Two soil covering rings 74AR on the right are provided behind the planting mechanism 68AR on the right in the first transplanting unit 51A. Specifically, the two planting mechanisms 68AR are provided on one side (right side) and the other side (left side) of the ninth frame 89, respectively. The soil covering rings 74AL and 74AR rotate the upper surface of the ridge and bring the soil to the root portion of the seedling planted by the first planting device 68A to cover the soil and suppress the root portion of the seedling.

As shown in FIG. 12, the soil covering ring 74AL is attached to the frame support portion 73AL of the transplanting frame 69A. Specifically, the soil covering ring 74AL is attached to the frame support portion 73AL via the soil covering frame 400AL. The soil covering ring 74AR is attached to the frame support portion 73AR of the transplant frame 69A. Specifically, the soil covering ring 74AR is attached to the frame support portion 73AR via the soil covering frame 400AR. As shown in FIGS. 2 and 3, the soil covering ring 74AL and the soil covering ring 74AR are arranged at different positions in the front-rear direction K1. In the present embodiment, the soil covering ring 74AR is arranged behind the soil covering ring 74AL.

Next, the soil covering ring 74B of the second transplanting unit 51B will be described. The soil covering ring 74B includes a left soil covering ring 74BL and a right soil covering ring 74BR.
Two left soil covering rings 74BL are provided behind the left planting mechanism 68BL in the second transplanting unit 51B. Two right soil covering rings 74BR are provided behind the right planting mechanism 68BL in the second transplanting unit 51B. The soil covering rings 74BL and 74BR rotate the upper surface of the ridge and bring the soil to the root portion of the seedling planted by the second planting device 68B to cover the soil and suppress the root portion of the seedling.

The soil covering ring 74BL is attached to the frame support portion 73BL of the transplanting frame 69B. Specifically, the soil covering ring 74BL is attached to the frame support portion 73BL via the soil covering frame 400BL. The soil covering ring 74BR is attached to the frame support portion 73BR of the transplanting frame 69B. Specifically, the soil covering ring 74BR is attached to the frame support portion 73BR via the soil covering frame 400BR. The soil covering rings 74BL and 74BR are arranged at different positions in the front-rear direction K1. In the present embodiment, the soil covering ring 74BR is arranged behind the soil covering ring 74BL. The support structure of the soil cover rings 74BL and 74BR is the same as the support structure of the soil cover rings 74AL and 74AR.

As shown in FIGS. 1 and 20, an irrigation tank (tank) T1 is mounted on the front portion of the tractor 1. The irrigation tank T1 is a tank for storing water irrigated by seedlings planted by the planting tool 137. Further, the tank is not limited to the irrigation tank T1 for storing water, and may be, for example, a tank for storing a liquid such as liquid fertilizer supplied to seedlings. Further, the irrigation tank T1 is a transplant-related body related to the transplant machine 3. The transplant-related body may be any member or device related to the transplant machine 3, and may be, for example, a fertilizer applicator that supplies fertilizer to the field.

As shown in FIG. 20, the irrigation tank T1 is arranged in front of the tractor 1 and is supported by the vehicle body 6. The vehicle body 6 of the tractor 1 includes a prime mover E1, a front axle frame 401, a clutch housing 402, a transmission case 403, a differential case 404, and the like. The clutch housing 402 is connected to the rear part of the prime mover E1, and the transmission case 403 is connected to the rear part of the clutch housing 402. The differential case 404 may be integrally formed with the mission case 403, or may be formed separately from the mission case 403 and connected to the rear portion of the mission case 403.

The prime mover E1 is an engine, more specifically, a diesel engine. Further, the prime mover E1 may be an electric motor, or may be a hybrid type having a diesel engine and an electric motor. The prime mover E1 is located in front of the steering wheel 8 and is covered by the bonnet 405. A headlight (not shown) is provided on the front side of the bonnet 405.

As shown in FIGS. 20 and 22, the front axle frame 401 projects forward from the prime mover E1 and swingably supports the front axle case that supports the front wheels 7A. The front axle frame 401 has a frame side portion 406L arranged on the left side of the prime mover E1 and a frame side portion 406R arranged on the right side of the prime mover E1. The rear portion of the frame side portion 406L and the frame side portion 406R is bolted to the side portion of the prime mover E1. Further, the frame side portion 406L and the frame side portion 406R are connected to each other by a connecting member 406A at the front portion and an appropriate portion (see FIG. 22). The front axle frame 401 may be a frame fixed to the lower front side of the prime mover E1. A weight bracket 407 to which the weight W1 can be attached is provided on the front portion of the front axle frame 401.

The clutch housing 402 is a case for accommodating a clutch that intermittently transmits the power of the prime mover E1. The mission case 403 is a case for accommodating the transmission. The transmission shifts the power of the prime mover E1 transmitted via the clutch and transmits it to at least the rear wheels 7B of the front wheels 7A and the rear wheels 7B. The differential case 404 is a case for accommodating a differential device that transmits the power shifted by the transmission to the rear wheels 7B.

As shown in FIGS. 20 to 23, the vehicle body 6 is provided with a mounting frame 408. The irrigation tank T1 is supported by the mounting frame 408. The mounting frame 408 includes a mounting frame 409 to which the irrigation tank T1 is mounted (supported), and a first mounting portion 410 and a second mounting portion 411 for mounting the mounting frame 409 to the vehicle body 6.
The mounting frame 409 is provided along the front and rear of the tractor 1 and has a mounting portion 412 projecting forward from the tractor 1. The irrigation tank T1 is mounted on the mounting portion 412.

The mounting frame 409 includes a first frame material 413R provided on one side (right side) of the vehicle body 6, a second frame material 413L provided on the other side (left side) of the vehicle body 6, and a first frame. It has a mounting portion 412 provided on the material 413R and the second frame material 413L and protruding forward from the vehicle body 6.
The first frame member 413R and the second frame member 413L are formed by a long square pipe and are arranged so as to extend in the front-rear direction in the vicinity of the vehicle body 6. The first frame member 413R is arranged from the middle part (side of the mission case 403) in the front and rear of the vehicle body 6 toward the front along the vehicle body 6. The front portion of the first frame member 413R projects forward from the vehicle body 6. The second frame member 413L is also arranged from the middle part of the vehicle body 6 (side of the mission case 403) toward the front along the vehicle body 6. The front part of the second frame member 413L also protrudes forward from the vehicle body 6.

The first mounting portion 410 and the second mounting portion 411 are members for mounting the first frame member 413R and the second frame member 413L to the vehicle body 6. The second mounting portion 411 is located behind the first mounting portion 410. In the present embodiment, the first mounting portion 410 mounts the front portion of the mounting frame 409 (first frame member 413R and second frame member 413L) on the front portion of the vehicle body 6. The second mounting portion 411 mounts the rear portion of the mounting frame 409 (first frame member 413R and second frame member 413L) in the middle of the front and rear of the vehicle body 6.

As shown in FIGS. 22 and 23, the first mounting portion 410 includes the first front mounting portion 410R for mounting the first frame member 413R (front portion) on the front axle frame 401 side and the second frame member 413L (of Includes a second front mounting portion 410L that mounts the front portion) to the front axle frame 401 side. The upper portion of the first front mounting portion 410R is fixed to the front portion of the first frame member 413R, and the lower portion is detachably fixed to the weight bracket 407 by bolts or the like. The upper portion of the second front mounting portion 410L is fixed to the front portion of the second frame member 413L, and the lower portion is detachably fixed to the weight bracket 407 by bolts or the like. The first front mounting portion 410R and the second front mounting portion 410L are mounted on the front axle frame 401 side via the weight bracket 407, but may be directly mounted on the front axle frame 401 or the front axle frame. It may be attached to a bracket member attached to 401.

The second mounting portion 411 includes a first rear mounting portion 411L that attaches the rear portion of the first frame material 413R to the mission case 403, and a second rear mounting portion 411R that attaches the rear portion of the second frame material 413L to the mission case 403. .. The first rear mounting portion 411L has first to fourth plates 414a to 414d. The first plate 414a is detachably attached to the side surface of the mission case 403 by a bolt or the like. The inner K4 side in the width direction of the second plate 414b is fixed to the first plate 414a, and the second plate 414b projects from the first plate 414a to the outer K3 in the width direction. The third plate 414c is a front portion of the second plate 414b, and a lower portion thereof is fixed to an end portion on the outer K3 side in the width direction, and the third plate 414c projects upward from the second plate 414b. The lower end of the fourth plate 414d is fixed to the front portion of the second plate 414b, and protrudes upward from the second plate 414b. Further, the fourth plate 414d and the third plate 414c are connected to each other. The rear end of the first frame member 413R is fixed to the upper part of the fourth plate 414d.

The second rear mounting portion 411R also has the first plate to the fourth plate 414a to 414d. The first plate 414a, the second plate 414b, the third plate 414c, and the fourth plate 414d are configured in the same manner as the first rear mounting portion 411L. Further, the second rear mounting portion 411R is formed symmetrically with respect to the vertical plane along the front-rear direction with the first rear mounting portion 411L. The description of the second rear mounting portion 411R will be omitted.

The first rear mounting portion 411L and the second rear mounting portion 411R may be fixed to the clutch housing 402 with bolts or the like.
As shown in FIG. 22, the mounting portion 412 is a front portion of the first frame member 413R, a first portion 412a projecting forward from the vehicle body 6 (tractor 1), and a front portion of the second frame member 413L. A second part 412b projecting forward from the vehicle body 6 (tractor 1), a third part 412c connecting the front parts of the first part 412a and the second part 412b, and a first part 412a and a second part 412b. It has a fourth portion 412d that connects the rear parts to each other. The third part 412c and the fourth part 412d are formed by a square pipe.

In the present embodiment, the first portion 412a is integrally formed with the first frame member 413R, but the first portion 412a is formed separately from the first frame member 413R, and the first frame member 413R is formed. It may be fixed by welding, rivets, bolts or the like. Further, although the second portion 412b is integrally formed with the second frame member 413L, the second portion 412b is formed separately from the second frame member 413L and welded, rivet or rivet to the second frame member 413L. It may be fixed with bolts or the like.

The irrigation tank T1 (transplantation-related body) is placed over the first site 412a and the second site 412b, and is pressed and fixed to the mounting portion 412 by bands (first band 416R, second band 416L). The band is formed of a metal band-shaped member. The band may be made of resin, canvas, or the like, and may be a strong and durable band-shaped member.

As shown in FIG. 20, the first band 416R is arranged on the right side of the irrigation tank T1 and is provided from the front surface of the irrigation tank T1 through the upper surface to the rear surface. The first band 416R is arranged on the upper surface of the irrigation tank T1 between the water supply portion 417 provided in the center of the irrigation tank T1 and the protrusion 418R (see FIG. 22).
As shown in FIG. 21, one end side of the first band 416R is fixedly attached to the third portion 412c by the first attachment 420R composed of bolts and nuts. The bolt insertion hole 421R (hole for inserting the bolt) formed on one end side of the first band 416R is formed into a vertically long elongated hole (see FIG. 23). The other end of the first band 416R is attached to the fourth portion 412d by the second attachment 422R. The second mounting tool 422R mounts the other end side of the first band 416R so as to be movable up and down with respect to the fourth portion 412d (mounting frame 409). The second fixture 422R has a bolt 423, a first nut 424 and a second nut 425. The other end side of the first band 416R is fixed to the upper part of the bolt 423. The lower part of the bolt 423 is a threaded portion 423a with a male thread, and penetrates the fourth portion 412d up and down. The first nut 424 is screwed into the threaded portion 423a on the upper surface side of the fourth portion 412d. The second nut 425 is screwed into the threaded portion 423a on the lower surface side of the fourth portion 412d. By rotating the first nut 424 in the tightening direction and the second nut 425 in the loosening direction, the other end side of the first band 416R is pulled down, and the irrigation tank T1 is pressed against the mounting portion 412.

The second band 416L is arranged on the left side of the irrigation tank T1 and is provided in the same manner as the first band 416R. The second band 416L is arranged between the water supply portion 417 and the protrusion 418L on the upper surface of the irrigation tank T1 (see FIG. 22). The second band 416L is fixed to the mounting portion 412 by the first attachment 420L and the second attachment 422L in the same manner as the first band 416L. Since the first attachment 420L and the second attachment 422L have the same configurations as the first attachment 420R and the second attachment 422R, description thereof will be omitted.

As shown in FIGS. 21 to 23, headlights 426L and 426R and light brackets 427 for mounting the headlights 426L and 426R are provided on the front portion of the mounting frame 409. That is, the mounting frame 408 has a headlight (right headlight 426L, left headlight 426R) and a light bracket 427. The headlight 426L, the headlight 426R and the light bracket 427 are located in front of the irrigation tank T1.

As shown in FIG. 23, the light bracket 427 is formed by bending one pipe material, and has a first vertical rod portion 427a, a second vertical rod portion 427b, and a horizontal rod portion 427c. The lower portion of the first vertical rod portion 427a is fixed to the fixing member 428R fixed to the right portion of the front surface of the third portion 412c. The lower portion of the second vertical rod portion 427b is fixed to the fixing member 428L fixed to the left portion of the front surface of the third portion 412c. The horizontal rod portion 427c connects the upper portions of the first vertical rod portion 427a and the second vertical rod portion 427b to each other.

As shown in FIG. 23, the headlight 426R is fixed to the stay member 429R fixed to the first vertical rod portion 427a. The headlight 426L is fixed to the stay member 429L fixed to the second vertical rod portion 427b.
The transplanting work machine 4 includes a irrigation device (liquid supply device) 430 shown in FIG. 24. This irrigation device 430 is a device for irrigating the seedling N1 planted in the ridge R1 (field) by the planting tool 137. That is, the transplanting work machine 4 is a work machine capable of planting seedlings N1 in the ridge R1 (field) and irrigating the seedlings N1 to be planted in one step while traveling with one machine. is there.

As shown in FIG. 24, the irrigation device 430 includes an irrigation tank T1, a suction hose 431 (a connector for connecting a transplant related body and a transplant machine 3), an irrigation pump (pump) 432, and a delivery hose (first). It has a fourth delivery hose 433a to 433d), a check valve 434, and an irrigation pipe (supply pipe) 435.
As shown in FIGS. 21 to 23, one side portion of the irrigation tank T1 (the bottom side of the irrigation tank T1 and the rear portion on the right side) is provided with an outlet 436 for delivering water in the irrigation tank T1. .. A lever 437 is provided at the delivery port 436, and the delivery port 436 can be opened and closed by the lever 437. One end (front end) of the suction hose 431 is connected to the delivery port 436.

As shown in FIG. 20, the suction hose 431 is arranged in the front-rear direction along the vehicle body 6 and is arranged rearward from the tractor 1. Further, the suction hose 431 is arranged along the first frame member 413R and is attached to the first frame member 413R by a fixture. As the fixture, a binding band (insulok), a plate material screwed to the first frame material 413R, or the like can be considered. The suction hose 431 may be arranged along the second frame member 413L and attached to the second frame member 413L by a fixture. The suction hose 431 arranged rearward from the tractor 1 is arranged in the transplanter 3 via the rotary cultivator 2.

As shown in FIGS. 9A and 10, the irrigation pump 432 is provided at the front of the second transplant frame 69B. As for the irrigation pump 432, a single (one) irrigation pump 432 is provided for one transplanting machine 3. That is, one irrigation pump 432 supplies water (liquid) to all the planting tools 137 equipped in the transplanting machine 3. In other words, all the seedlings N1 planted by one transplanting machine 3 are irrigated with water discharged from one irrigation pump 432. The irrigation pump 432 is a rotary pump in this embodiment. The rotary pump is not particularly limited, but a mechanical booster pump (two eyebrows type rotors in the casing are synchronously rotated in opposite directions by a drive gear provided at the end of a shaft supporting the rotor. Structural pump).

As shown in FIG. 24, the irrigation pump 432 has a casing 438, a pump shaft 439, a suction unit 440, and a discharge unit 441. A rotor is housed in the casing 438. Power from the electric motor 71 is input to the pump shaft 439. The rotor in the casing 438 is rotationally driven by the power input to the pump shaft 439. When the rotor is driven, water is sucked from the suction unit 440 and discharged from the discharge unit 441. The suction portion 440 is provided on the upper part of the casing 438. A first hose joint 442 is attached to the suction portion 440. The other end (rear end) of the suction hose 431 is connected to the first hose joint 442.

The discharge portion 441 is provided in the lower part of the casing 438. A second hose joint 443 is attached to the discharge portion 441. The second hose joint 443 has four connecting portions, that is, first to fourth connecting portions 444a to 444d.
Delivery hoses are provided according to the number of planting tools 137 (planting devices). That is, in the present embodiment, the delivery hose is provided with four hoses, the first to fourth delivery hoses 433a to 433d. At least one planting tool 137 may be provided, and when there is one planting tool 137, one delivery hose is provided.

One end side of the first delivery hose 433a is connected to the first connection portion 444a. One end side of the second delivery hose 433b is connected to the second connection portion 444b. One end side of the third delivery hose 433c is connected to the third connection portion 444c. One end side of the fourth delivery hose 433d is connected to the fourth connection portion 444d.
As shown in FIG. 25, the check valve 434 is provided corresponding to the number of planting tools 137 (planting devices). That is, the check valve 434 is provided on each of the four planting tools 137AR, 137AL, 137BR, and 137BL. Each check valve 434 is provided in the vicinity of each planting tool 137.

As shown in FIG. 25, the check valve 434 is attached to the attachment member 145 side via the attachment stay 445. Therefore, the check valve 434 moves up and down together with the planting tool 137.
As shown in FIG. 25, a connecting pipe 446 is provided on one end side (front portion) of each check valve 434. The other end side of the first delivery hose 433a is connected to the connecting pipe 446 of the check valve 434 corresponding to the planting tool 137AR. The other end side of the second delivery hose 433b is connected to the connecting pipe 446 of the check valve 434 corresponding to the planting tool 137AL. The other end side of the third delivery hose 433c is connected to the connecting pipe 446 of the check valve 434 corresponding to the planting tool 137BR. The other end side of the fourth delivery hose 433d is connected to the connecting pipe 446 of the check valve 434 corresponding to the planting tool 137BL.

As shown in FIGS. 24 and 25, an irrigation pipe 435 is connected to the other end side (rear portion) of each check valve 434 via a joint member 447. The irrigation pipe 435 extends downward from the joint member 447, and the lower part is inserted into the upper part inside the planting tool 137. Further, the lower end opening of the irrigation pipe 435 is directed downward. The check valve 434 allows the flow of water from the irrigation pump 432 to the planting tool 137 and blocks the flow of water on the opposite side (from the planting tool 137 to the irrigation pump 432). That is, the check valve 434 is capable of supplying water (liquid) supplied (liquid) from the irrigation pump 432 into the planting tool 137 (irrigating the seedlings in the planting tool 137).

The check valve 434 is, for example, a valve that closes the internal flow path by pressing the valve body with the urging force of the spring and opens the flow path by pushing the valve body against the urging force of the spring. is there. Then, the check valve 434 opens by the pressure of the water (liquid) sent (liquid) by the irrigation pump 432, and closes when the irrigation pump 432 stops to shut off the flow of water (liquid).

The delivery hoses 433a to 433d, the check valve 434, and the irrigation pipe 435 form a liquid flow passage for flowing a fluid between the irrigation pump 432 and the planting tool 137. Therefore, the check valve 434 is provided in the liquid flow passage.
As shown in FIG. 24, the outlet 436 of the irrigation tank T1 is located higher than the check valve 434. Specifically, the vertical center height position H1 of the delivery port 436 is higher than the vertical center height position H2 of the check valve 434 in the planting tool 137 located at the top dead center position G1. high. Due to the height difference H3 between the height position H1 and the height position H2, water is constantly contained in the delivery hoses 433a to 433d and the check valve 434 (the liquid flow passage from the irrigation pump 432 to the check valve 434). Is satisfied.

In the present embodiment, the rotational power from the electric motor 71 is intermittently transmitted to the irrigation pump 432. That is, the irrigation pump 432 is intermittently driven. When the irrigation pump 432 is driven, the water in the irrigation tank T1 is sucked into the irrigation pump 432 from the suction unit 440 via the suction hose 431, and the water in the irrigation pump 432 is discharged from the discharge unit 441. .. The discharged water is sent to each planting tool 137 via the delivery hoses 433a to 433d. The pressure of the water to be sent opens the check valve 434, allowing the flow of water in the check valve 434. The water that has passed through the check valve 434 is supplied into the planting tool 137 via the irrigation pipe 435 and irrigates the seedling N1. At this time, since the liquid (water) flow path from the irrigation pump 432 to the check valve 434 is filled with water, the check valve 434 opens as soon as the irrigation pump 432 is driven, and irrigation is performed immediately. And has good responsiveness. Further, the irrigation pump 432 can be irrigated from the start of driving to the stopping of driving, and a set amount of water can be supplied.

When the drive of the irrigation pump 432 is stopped, the check valve 434 closes. This prevents water from sloppy out of the irrigation pipe 435 while the irrigation pump 432 is stopped.
Next, the power transmission system 448 that transmits the rotational power from the electric motor 71 (power source) to the irrigation pump 432 will be described in detail.
As shown in FIG. 9B, the power transmission system 448 is provided in the second transplant unit 51B, and transmits the power from the third output shaft (output shaft) 261 to the irrigation pump 432. That is, the power transmission system 448 transmits the power from the power source that drives the planting tool 137 to the irrigation pump 432. In other words, the power transmitted from the planting device 68B to the seedling supply device 72B is branched and transmitted to the irrigation pump 432.

As shown in FIGS. 9B, 26, and 29, the power transmission system 448 includes a timing adjusting unit 449, a transmission sprocket 450, a transmission chain 451, an input sprocket 452, a power transmission device 453, and a coupling 454. Has. In this order, they are arranged from the upstream side to the downstream side in the power transmission direction, that is, from the third output shaft 261 to the irrigation pump 438.
As shown in FIGS. 9B and 26, the timing adjusting unit 449 and the transmission sprocket 450 are provided on the left portion of the third output shaft 261. The timing adjusting unit 449 is provided on the upstream side in the power transmission direction from the transmission sprocket 450, and the rotational power of the third output shaft 261 is transmitted to the transmission sprocket 450 via the timing adjustment unit 449. The timing adjusting unit 449 is a mechanism for adjusting the stop timing for stopping the drive of the irrigation pump 432.

As shown in FIGS. 28A and 28B, the timing adjusting unit 449 has a drive member 456 to which rotational power from the electric motor 71 (power source) is transmitted, and a rotational direction (power rotation direction) with respect to the drive member 456. It is a member that is connected so as to be able to adjust the relative position of the above, and has a driven member 457 that transmits the rotational power from the driving member 456 to the irrigation pump 432. The driving member 456 and the driven member 457 are formed in a disk shape centered on the axis of the third output shaft 261. The driving member 456 and the driven member 457 are overlapped in the axial direction of the third output shaft 261 and connected by bolts 458a to 458c and nuts 459a to 459c.

The driving member 456 is fixed to the left end of the third output shaft 261 and the driven member 457 is fixed to the transmission sprocket 450. The third output shaft 261, the driving member 456, the driven member 457, and the transmission sprocket 450 are concentric.
The drive member 456 is formed with a plurality of first insertion holes 460a to 460c formed through the drive member 456. The first insertion holes 460a to 460c are formed of circular holes that fit the shaft portions of the bolts 458a to 458c. The first insertion holes 460a to 460c are formed on the circumference centered on the axis of the third output shaft 261, and are formed at predetermined intervals (equally spaced) in the circumferential direction.

The driven member 457 is formed with a plurality of second insertion holes 461a to 461c formed through the driven member 457. The second insertion holes 461a to 461c are formed in an arcuate elongated hole centered on the axis of the third output shaft 261. The second insertion hole is formed at a position corresponding to the first insertion holes 460a to 460c. The first insertion hole may be formed as an arcuate elongated hole, and the second insertion hole may be formed as a circular hole.

The drive member is driven by inserting the shafts of the bolts 458a to 458c into the first insertion holes 460a to 460c and the second insertion holes 461a to 461c and tightening the nuts 459a to 459c screwed into the shafts of the bolts 458a to 458c. The 456 and the driven member 457 are coupled. By loosening the nuts 459a to 459c, the relative position of the driven member 457 with respect to the driving member 456 in the rotation direction can be adjusted within the range (adjustment range) of the elongated holes of the second insertion holes 461a to 461c.

In the planting devices 68A and 68B, the planting tool 137 operates for one cycle by rotating the transmission shafts 70A and 70B once. That is, the planting tool 137 returns from the top dead center position G1 to the top dead center position G1 via the bottom dead center position G2. Further, when the transmission shafts 70A and 70B make one rotation, the third output shaft 261 makes one rotation. During one rotation of the third output shaft 261, the irrigation pump 432 is driven once for a predetermined time.

As shown in FIG. 16, the irrigation pump 432 is a part of the movement period 462 from the top dead center position G1 to the bottom dead center position G2 and the return to the top dead center position G1. It is driven to supply water (liquid transfer) in the supply period 463, which is a period. Therefore, the irrigation pump 432 is stopped in the stop period 464, which is a period other than the supply period 463 in the movement period 462.

Then, the timing adjusting unit 449 adjusts the relative position of the power of the driven member 457 with respect to the driving member 456 in the rotation direction to adjust the stop time for stopping the driving of the irrigation pump 432 (the irrigation pump 432 in the moving period 462). Adjustments can be made to shift the stop time back and forth). Further, when the stop time of the irrigation pump 432 is adjusted, the start time at which the irrigation pump 432 starts to drive is also adjusted. That is, the position of the supply period 463 in the movement period 462 can be adjusted.

In FIG. 16, the supply period 463 and the outage period 464 are illustrated with suitable examples and are not limited thereto. The irrigation pump 432 may be driven for a portion of the travel period 462. Preferably, the irrigation pump 432 is driven to feed the liquid when the planting tool 137 is lowered, and is driven when the planting tool 137 is located near the bottom dead center position G2 or the bottom dead center position G2. It is better to be stopped. Further, preferably, the irrigation pump 432 is stopped driving before the planting tool 137 is located at the bottom dead center position G2. Further, the irrigation pump 432 should start irrigation at the same time as the planting tool 137 starts descending from the top dead center position G1 or immediately after the start of descent. By irrigating only when necessary, wasteful power consumption can be suppressed. In addition, waste of water in the irrigation tank T1 can be suppressed, and the water supply labor can be reduced.

As shown in FIGS. 26 and 27, the input sprocket 452 is fixed to the input shaft 465 provided on the left side of the power transmission device 453. Power is transmitted from the transmission sprocket 450 to the input sprocket 452 via the transmission chain 451. The number of teeth of the input sprocket 452 is the same as the number of teeth of the transmission sprocket 450. Therefore, when the transmission shafts 70A and 70B and the third output shaft 261 make one rotation, the input shaft 465 also makes one rotation.

As shown in FIGS. 29 and 30, the power transmission device 453 includes a power case 466, an input shaft 465, an output shaft 467, and a transmission mechanism 468. As shown in FIG. 27, the power case 466, together with the irrigation pump 432, is fixed to the front of the transplant frame 69B by a mounting bracket 467.
As shown in FIG. 30, the power case 466 has a first case component 471 on the left side, a second case component 472 on the right side, and a lid 473. The outer peripheral portions of the first case constituent body 471 and the second case constituent body 472 are overlapped with each other and the outer peripheral portions are bolted. The first accommodating portion 476 is formed by the first case constituent 471 and the second case constituent 472. The lid body 473 is arranged on the right side of the upper part of the second case structure 472, and is bolted to the second case structure 472. A second accommodating portion 477 is formed by the lid body 473 and the upper portion of the second case component 472. The lid body 473 is fixed to the second case component 472 by a small number (for example, two) bolts and can be easily attached and detached (the second accommodating portion 477 can be easily opened and closed).

As shown in FIG. 30, a projecting portion 478 projecting to the left is provided at the lower portion of the first case component 471. The input shaft 465 is inserted into the first accommodating portion 476 from the protruding portion 478, and a part thereof protrudes to the left from the protruding portion 478. An input sprocket 452 is integrally rotatably attached to a protruding portion of the input shaft 465. The left portion of the input shaft 465 is rotatably supported by a protruding portion 478 via a bearing. An output shaft 467 is rotatably supported at the lower part of the second case structure 472 via a bearing. The output shaft 467 is arranged concentrically with the input shaft 465. The right portion of the input shaft 465 is rotatably supported by the output shaft 467 via a bearing. The output shaft 467 projects to the right from the second case component 472, and the pump shaft 439 is integrally rotatably connected to the protruding portion via a coupling 454.

The transmission mechanism 468 is housed in the power case 466 and transmits power from the input shaft 465 to the output shaft 467. Therefore, the power transmitted to the input shaft 465 is transmitted to the output shaft 467 via the transmission mechanism 468 and is also transmitted from the output shaft 467 to the irrigation pump 432.
As shown in FIGS. 29 and 30, the transmission mechanism 468 includes a clutch mechanism 479, an intermittent mechanism 480, a speed change mechanism 481, and a final transmission mechanism 482. These are arranged in order from the upstream side in the power transmission direction in the order described above. That is, the rotational power transmitted to the input shaft 465 is intermittently transmitted to the intermittent mechanism 480 via the clutch mechanism 479, and the power is intermittently transmitted from the intermittent mechanism 480 to the transmission mechanism 481. The power transmitted to the transmission mechanism 481 is transmitted to the output shaft 467 via the final transmission mechanism 482. The clutch mechanism 479, the intermittent mechanism 480, and the final transmission mechanism 482 are housed in the first housing section 476. The transmission mechanism 481 is housed in the second housing section 477.

As shown in FIGS. 29 and 30, the clutch mechanism 479 is composed of a claw clutch and is provided in the lower part of the first accommodating portion 476. The clutch mechanism 479 includes a driving rotating body 483, a driven rotating body 484, a spring (biasing member) 485, a clutch tooth 486, and an engaging tooth 487.
The drive rotating body 483 is composed of a tubular member (sleeve), and is fitted to the outer periphery of the input shaft 465 by spline fitting. That is, the drive rotating body 483 can rotate integrally with the input shaft 465 and can move in the axial direction of the input shaft 465.

The driven rotating body 484 is located on the downstream side of the driving rotating body 483 in the power transmission direction. In the illustrated example, the driven rotating body 484 is located to the right of the driving rotating body 483. The driven rotating body 484 is fitted (supported) on the outer circumference of the input shaft 465 so as to be relatively rotatable around the axis.
The spring 485 is a coil spring. The spring 485 is arranged on the side of the drive rotating body 483 and on the side opposite to the driven rotating body 484 (on the left side of the driving rotating body 483). The spring 485 urges the drive rotating body 483 toward the driven rotating body 484 (toward a direction closer to the driven rotating body 484).

The clutch teeth 486 are provided at the end of the drive rotating body 483 opposite to the spring 485 (the right end of the drive rotating body 483). The clutch tooth 486 has a first clutch tooth 486a and a second clutch tooth 486b provided at a position symmetrical with respect to the first clutch tooth 486a in the radial direction of the drive rotating body 483.
The engaging teeth 487 are provided at the end of the driven rotating body 484 on the drive rotating body 483 side (the left end of the driven rotating body 484). The engaging tooth 487 has a first engaging tooth 487a that meshes with the first clutch tooth 486a and a second engaging tooth 487b that meshes with the second clutch tooth 486b.

When the drive rotating body 483 is located at the connection position M1 shown by the solid line in FIG. 30, the first clutch tooth 486 meshes with the first engaging tooth 487, and the second clutch tooth 486 meshes with the second engaging tooth 487. To do. Then, the power of the input shaft 465 is transmitted to the intermittent mechanism 480 via the clutch mechanism 479. That is, the clutch mechanism 479 is in a connected state in which power is transmitted by the intermittent mechanism 480. Further, when the drive rotating body 483 is moved in a direction away from the driven rotating body 484 against the urging force of the spring 485, the driving rotating body 483 is located at the cutting position M2 shown by the alternate long and short dash line in FIG. Then, the first clutch tooth 486 is separated from the first engaging tooth 487, and the second clutch tooth 486 is separated from the second engaging tooth 487. In this state, power is not transmitted from the input shaft 465 to the intermittent mechanism 480. That is, the clutch mechanism 479 is in a disengaged state in which the power transmission by the intermittent mechanism 480 is cut off and the disengagement is held.

With this clutch mechanism 479, the planting work can be performed without performing the irrigation work.
The drive rotating body 483 (clutch mechanism 479) is operated by the clutch operating member 470 shown in FIGS. 26 and 27. The clutch operating member 470 is fixed to an operating shaft 475 provided on the first case component 471. The operation shaft 475 is provided with an engaging portion 474 that engages with the drive rotating body 483, and the drive rotating body 483 is connected to the connection position M1 and the cutting position M2 by rotating the operation shaft 475 by the clutch operating member 470. It can be operated with. The position of the clutch operating member 470 can be fixed depending on whether the drive rotating body 483 is in the connection position M1 or the drive rotating body 483 is in the cutting position M2.

In the adjustment range of the timing adjusting unit 449, the first clutch tooth 486 meshes only with the first engaging tooth 487, and the second clutch tooth 486 meshes only with the second engaging tooth 487. That is, in the adjustment range of the timing adjusting unit 449, the driven rotating body 484 meshes with the driving rotating body 483 at one position in the rotation direction. Therefore, even if the clutch mechanism 479 is disengaged and then reconnected, the timing of irrigation adjusted by the timing adjusting unit 449 does not deviate.

The intermittent mechanism 480 is a mechanism that intermittently transmits the power of the electric motor (power source) 71 to the irrigation pump 432 to drive the irrigation pump 432 and stop the drive during the moving period 462 of the planting tool 137. .. In the present embodiment, the intermittent mechanism 480 transmits power when the planting tool 137 descends to drive the irrigation pump 432, and stops power transmission when the planting tool 137 rises to drive the irrigation pump 432. Stop driving.

As shown in FIG. 30, the intermittent mechanism 480 intermittently meshes with the drive gear 488 to which the power transmitted from the electric motor 71 (third output shaft 261) is transmitted and the drive gear 488 to intermittently engage the irrigation pump 432. It has a driven gear 489 to drive. The drive gear 488 is integrally formed with the driven rotating body 484. In other words, it can be said that the drive gear 488 also serves as the driven rotating body 484 of the clutch mechanism 479, and the engaging teeth 487 are formed on the drive gear 488 of the intermittent mechanism 480. By forming the engaging teeth 487 on the drive gear 488 of the intermittent mechanism 480, the clutch mechanism 479 can be compactly configured. The drive gear 488 is fitted (supported) on the outer circumference of the input shaft 465 so as to be relatively rotatable around the axis.

The driven gear 489 is arranged above the drive gear 488 and is integrally rotatably fitted to the first shaft 490. The first shaft 490 is rotatably supported by the first case structure 471 and the second case structure 472.
As shown in FIG. 31A, the drive gear 488 is composed of a toothless gear, and has a toothed portion 488a having teeth formed and a toothed portion 488b having no teeth formed. The driven gear 489 is a gear in which teeth are formed over the entire circumference. The toothed portion 488a meshes with the driven gear 489, and the missing tooth portion 488b does not mesh with the driven gear 489. When the input shaft 465 makes one rotation, the drive gear 488 makes one rotation, and the irrigation pump 432 is driven while the toothed portion 488a meshes with the driven gear 489. Further, the drive of the irrigation pump 432 is stopped while the tooth missing portion 488b does not mesh with the driven gear 489. That is, the intermittent mechanism 480 drives the irrigation pump 432 during the supply period 463 of the movement period 462 of the planting tool 137, and stops the drive of the irrigation pump 432 during the stop period 464.

The speed change mechanism 481 is a mechanism that shifts the power (power from the intermittent mechanism 480) from the electric motor 71 (third output shaft 261) and transmits it to the irrigation pump 432. That is, it is a mechanism for changing the amount of water (irrigation amount) discharged from the irrigation pump 432 by slowing or increasing the driving speed of the irrigation pump 432 during the supply period 463. This makes it possible to select the amount of irrigation according to the seedlings for different types (different crops) of seedlings.

As shown in FIG. 30, the transmission mechanism 481 is provided on the downstream side of the intermittent mechanism 480 in the power transmission direction. The transmission mechanism 481 has a first gear 491 and a second gear 492 that meshes with the first gear 491. As shown in FIG. 31B, the first gear 491 and the second gear 492 are arranged side by side in the second accommodating portion 477. The first gear 491 is integrally rotatable and replaceable (removable) at the end of the first shaft 490. The second gear 492 is integrally rotatable and replaceable (removable) at the end of the second shaft 493. The second shaft 493 is rotatably supported by the first case structure 471 and the second case structure 472 (see FIG. 30).

As shown in FIG. 30, the first gear 491 and the second gear 492 face the inner surface of the lid 473. Therefore, when the lid 473 is removed, the first gear 491 and the second gear 492 can be easily accessed, and the first gear 491 and the second gear 492 can be changed to other gears (another first gear 491, another). It can be easily replaced with the second gear 492). That is, one or a plurality of first gears 491 having different numbers of teeth from the first gear 491 provided in the power case 466 and the second gear 492 provided in the power case 466 have different numbers of teeth. One or more second gears 492 are prepared (a set of one or more first gears 491 and a second gear 492, and one or more sets of gears having different gear ratios are prepared. It is possible to replace the first gear 491 and the second gear 492 with gears having different numbers of teeth. By exchanging the first gear 491 and the second gear 492 with gears having different numbers of teeth, it is possible to shift the power transmitted from the intermittent mechanism 480 to the irrigation pump 432. Further, the gear may be changed by exchanging the first gear 491 and the second gear 492.

Although the speed change mechanism 481 is a replaceable type in which gears are exchanged, it may be a speed change mechanism of a mechanism that shifts a plurality of stages by switching gears. That is, a plurality of sets of the first gear 491 and the second gear 492 having different gear ratios are accommodated in the second accommodating portion 477, and the pair of the first gear 491 and the second gear 492 is switched to perform a plurality of stages. It may be a mechanism for shifting gears. Further, in the present embodiment, by directly or indirectly pressing the first gear 491 and the second gear 492 with the lid 473, the first gear 491 and the second gear 492 can be easily pulled out.

As shown in FIGS. 29, 30, and 31C, the final transmission mechanism 482 has a first transmission gear 494 and a second transmission gear 495 that meshes with the first transmission gear 494. The first transmission gear 494 is integrally rotatably fitted to the second shaft 493. The second transmission gear 495 is integrally rotatably fitted to the output shaft 467. The power from the intermittent mechanism 480 shifted by the transmission mechanism 481 is output from the output shaft 467 via the final transmission mechanism 482 and input to the irrigation pump 432.

The final transmission mechanism 482 may not be provided.
As shown in FIG. 2, the transplanting work machine 4 includes a rotary tiller 2 and an irrigation tube laying device 497 for laying a irrigation tube 496 in a ridge R1 (field) formed by the soil cultivators 23L, 23R, 23C. That is, the transplanting work machine 4 is one machine, at least one of the seedling planting work of planting the seedling N1 and the irrigation tube laying work of laying the irrigation tube 496 in the ridge R1 (field) where the seedling N1 is planted. It is a working machine that can be performed in the process. Further, the transplanting work machine 4 includes a ridge forming operation of forming a ridge R1 in the field, a seedling planting operation of planting a seedling N1 in the formed ridge R1, and an operation of laying an irrigation tube 496 in the formed ridge R1. It is a working machine that can be performed in the process.

As shown in FIG. 32, the irrigation tube laying device 497 is an attachment body 499 to which the irrigation tube 496 unwound from the rotatably provided tube roll 498 and laid on the ridge R1 (field) and the tube roll 498 are attached. And a guide member 500 for guiding the irrigation tube 496 to the ridge R1 (field).
The irrigation tube 496 is formed by perforating a large number of irrigation holes at intervals in the longitudinal direction in a long flat tube. Water is passed through the irrigation tube 496, and the passed water is discharged from the irrigation hole to irrigate the crops planted in the ridge R1 (field).

As shown in FIG. 34, the tube roll 498 is formed by winding the irrigation tube 496 in a roll shape. The irrigation tube 496 is wound around a tubular roll core 501. Specifically, the irrigation tube 496 is sequentially wound around the roll core 501 from one end to the other end in the axial direction of the roll core 501. Further, when the irrigation tube 496 is wound to the other end of the roll core 501, it is folded back and wound from the other end toward one end. In this way, the irrigation tube 496 is wound around the roll core 501 in a plurality of layers (many layers). That is, the tube roll 498 is formed by winding a plurality of layers (many layers) of the irrigation tube 496 around the roll core 501.

As shown in FIG. 32, the irrigation tube 496 is unwound from the tube roll 498 and laid on the ridge R1 (field). Further, the irrigation tube 496 is laid at a position corresponding to the adjacent planting tools 137 in the width direction K2 (between the adjacent two seedlings N1).
As shown in FIG. 3, the tube roll 498 includes a first tube roll 498R corresponding to the first planting device 68A and a second tube roll 498L corresponding to the second planting device 68B. Therefore, the irrigation tube 496 includes a first irrigation tube 496R laid on the first ridge R11 and a second irrigation tube 496L laid on the second ridge R12 (see FIG. 32). In other words, the first irrigation tube 496R forms the first tube roll 498R, and the second irrigation tube 496L forms the second tube roll 498L.

As shown in FIG. 32, the mounting body 499 includes a first mounting body 499R to which the first tube roll 498R is mounted and a second mounting body 499L to which the second tube roll 498L is mounted. The first mounting body 499R has a first roll support 502R on which the first tube roll 498R is supported, and a first mounting body 503R that mounts the first roll support 502R to the support arm 13R. The second attachment body 499L has a second roll support 502L on which the second tube roll 498L is supported, and a second attachment body 503L that attaches the second roll support 502L to the support arm 13L.

As shown in FIGS. 33 and 34, the first roll support 502R and the first tube roll 498R (tube roll) are arranged above the rotary cultivator 2 (ground work machine). Further, the first roll support 502R and the first tube roll 498R (tube roll) are located in front of the first front chair (front chair) 231R and above the support arm 13R.

The second roll support 502L and the second tube roll 498L (tube roll) are arranged above the rotary cultivator 2 (ground work machine). Further, the second roll support 502L and the second tube roll 498L (tube roll) are located in front of the second front chair (front chair) 231L and above the support arm 13L.
The first mounting body 499R (first roll support 502R and first mounting body 503R) and the second mounting body 499L (second roll support 502L and second mounting body 503L) are in the width direction of the transplanting work machine 4. Since it is formed symmetrically with respect to the vertical plane passing through the center of K2 and along the front-rear direction K1, the first mounting body 499R will be described below, and the second mounting body 499L will be omitted.

As shown in FIGS. 33 and 34, the first roll support 502R has a first flange 504A, a second flange 504B, and a roll shaft 505. The first flange 504A and the second flange 504B are formed of a circular plate material. The first flange 504A and the second flange 504B are arranged so as to face each other with a gap in the width direction K2. The second flange 504B is arranged inward K4 in the width direction of the first flange 504A. A shaft fixing portion 506A is provided on the side surface of the first flange 504A and at the center of the side surface opposite to the second flange 504B. A shaft fixing portion 506B is provided at the center of the side surface of the second flange 504B, which is opposite to the first flange 504A.

The roll shaft 505 has an axial center extending through the shaft fixing portion 506A, the first flange 504A, the second flange 504B, and the shaft fixing portion 506B and extending in the width direction K2. Further, the roll shaft 505 is fixed to the shaft fixing portion 506A by the bolt 507A, and is fixed to the shaft fixing portion 506B by the bolt 507B. The roll shaft 505 protrudes outward from the shaft fixing portions 506A and 506B, and the positions of the first flange 504A and the second flange 504B can be adjusted along the roll shaft 505 by loosening the bolts 507A and 507B. is there. In other words, the distance between the first flange 504A and the second flange 504B can be adjusted.

When the first flange 504A is removed from the roll shaft 505, the roll core 501 of the first tube roll 498R can be concentrically fitted to the outer circumference of the roll shaft 505 from the outer K3 in the width direction. By attaching the first flange 504A to the roll shaft 505, the first tube roll 498R can be sandwiched between the first flange 504A and the second flange 504B. As a result, the first tube roll 498R can be attached to the first roll support 502R. Further, the first roll support 502R is rotatably supported by the first mounting body 503R around the axis in the width direction K2. That is, the tube roll 498 is rotatably provided around the axis extending in the width direction K2 above the rotary cultivator 2 (ground work machine).

The irrigation tube 496 may be wound around the roll shaft 505 between the first flange 504A and the second flange 504B.
As shown in FIGS. 33 and 34, the first mounting body 503R is arranged inward K4 in the width direction of the first roll support 502R. The first mounting body 503R has a support column member 508, a bracket arm 509, connecting plates 510A and 51B, a mounting board 511, and a mounting member 512.

The strut member 508 is arranged so as to extend vertically inward K4 in the width direction of the first roll support 502R. The end of the roll shaft 505 on the inner K4 side in the width direction is rotatably supported around the axis center on the upper portion of the support column member 508. Further, the roll shaft 505 is fixed to the upper part of the support column member 508 so as not to move in the width direction K2.
The bracket arm 509 is arranged so as to extend in the width direction K2 below the roll shaft 505 inward K4 side in the width direction and above the support arm 13R. The lower end of the support column member 508 is fixed to the end of the bracket arm 509 on the inner K4 side in the width direction. The outer K3 side of the bracket arm 509 in the width direction is fixed to the mounting board 511 by the connecting plates 510A and 51B.

The mounting board 511 is arranged above the support arm 13R. The mounting member 512 is formed in a curved shape so as to extend from the front portion of the support arm 13R to the rear portion via the lower portion. Further, the mounting member 512 has a curved shape that opens upward. The front and rear upper parts of the mounting member 512 are bolted to the mounting board 511. The first mounting body 503R is mounted on the support arm 13R by sandwiching the support arm 13R between the mounting board 511 and the mounting member 512.

As shown in FIGS. 32 and 33, the irrigation tube laying device 497 includes a guide member 500 that guides the irrigation tube 496 unwound from the tube roll 498 to the ridge R1 (field). The guide member 500 guides the irrigation tube 496 to a corresponding position between adjacent planters 137 in the width direction K2. That is, the irrigation tube 496 is laid between the adjacent two seedlings N1.

As shown in FIG. 32, the guide members are a first guide member 500R located behind the first roll support 502R (first tube roll 498R) and guiding the first irrigation tube 496, and a second roll. It includes a second guide member 500L located on the rear side of the support 502L (second tube roll 498L) and guiding the second irrigation tube 496.
As shown in FIG. 33, the guide members (first guide member 500R and second guide member 500L) are arranged above the rear cover 19B.

As shown in FIGS. 33 and 34, the guide members (first guide member 500R and second guide member 500L) are formed in a tubular shape with both ends open.
The first guide member 500R guides the first irrigation tube 496 unwound from the first tube roll 498R (first roll support 502R). Further, the first guide member 500R (guide member) is provided below the first front chair (front chair) 231R. Further, the first guide member 500R (guide member) is arranged in an inclined shape that shifts downward from the first tube roll 498R (tube roll) toward the ridge R1 (field) toward the rear.

The second guide member 500L guides the second irrigation tube 496 unwound from the second tube roll 498L (second roll support 502L). Further, the second guide member 500L (guide member) is provided below the second front chair (front chair) 231L. Further, the second guide member (guide member) 500L is arranged so as to move downward from the second tube roll 498L (tube roll) toward the ridge R1 (field) toward the rear.

Since the first guide member 500R and the second guide member 500L have the same configuration, the first guide member 500R will be described below, and the description of the second guide member 500L will be omitted.
As shown in FIGS. 33 and 34, the first guide member 500R has an upper insertion portion 513 and a guide main body 514 forming from the lower end of the insertion portion 513 to the lower end of the first guide member 500R. The upper end of the insertion portion 513 is open toward the lower part of the first roll support 502R (the lower part of the first tube roll 498R). The upper end side of the insertion portion 513 is an insertion port 515 into which the first irrigation tube 496 is inserted.

The insertion portion 513 has a first side wall 513a, a second side wall 513b, an upper wall 513c, and a lower wall 513d. The first side wall 513a and the second side wall 513b are arranged so as to face each other with a gap in the width direction K2. Further, the first side wall 513a and the second side wall 513b are formed in a tapered shape that gradually expands from the upper end of the guide main body 514 toward the first roll support 502R. As a result, the insertion port 515 is formed to be wide in the width direction K2. The upper wall 513c is formed in an inclined shape so as to move away from the lower wall 513d toward the first roll support 502R from the upper end of the guide main body 514. The lower end of the insertion portion 513 has an opening shape and communicates with the inside of the guide main body 514.

When the irrigation tube 496 is unwound from the tube roll 498, the unwinding position of the irrigation tube 496 moves in the axial direction of the roll shaft 505, but between the first side wall 513a and the second side wall 513b of the insertion portion 513. Since the irrigation tube 496 is expanded toward the roll support 502 and the tube roll 498, the irrigation tube 496 unwound from the tube roll 498 can be smoothly unwound even if the unwinding position of the irrigation tube 496 moves in the width direction K2. It can be inserted into the guide member 500. Further, as the irrigation tube 496 is unwound from the tube roll 498, the diameter of the tube roll 498 becomes smaller. Then, the unwinding position of the irrigation tube 496 approaches the upper wall 513c, but the upper wall 513c is inclined so as to move away from the lower wall 513d toward the roll support 502 and the tube roll 498. By unwinding the irrigation tube 496 from the tube roll 498, it is possible to prevent the irrigation tube 496 from coming into contact with the upper wall 513c even if the unwinding position of the irrigation tube 496 approaches the upper wall 513c.

As shown in FIGS. 33 and 34, a first guide pin (guide pin) 516 extending in the width direction K2 is provided on the lower side of the insertion port 515. The first guide pin 516 is provided over the first side wall 513a and the second side wall 513b, and is rotatably supported by the first side wall 513a and the second side wall 513b around an axial center extending in the width direction K2. When the irrigation tube 496 inserted into the guide member 500 comes into contact with the first guide pin 516, the irrigation tube 496 can be smoothly inserted into the first guide member 500R without being damaged. The first guide pin 516 can be omitted by forming the edge wall forming the insertion port 515 of the guide member 500 into a smooth shape without edges.

As shown in FIGS. 33 and 34, the guide main body 514 is formed in a square tubular shape having the same cross-sectional shape as the opening edge portion at the lower end of the insertion portion 513 and having both ends open. The lower wall 513d of the insertion portion 513 is formed on the extension of the lower wall 514a of the guide main body 514. The lower end side of the guide main body 514 is an insertion port 519 into which the first irrigation tube 496 is inserted. The insertion / exit 519 is provided with a second guide pin (guide pin) 517 extending in the width direction K2. The second guide pin 517 is arranged above the insertion / exit 519, and is rotatably supported around one side wall 514b and the other side wall 514c of the guide main body 514 around the axis. When the irrigation tube 496 inserted from the guide member 500 comes into contact with the second guide pin 517, the irrigation tube 496 can be smoothly sent out from the guide member 500 without damaging it.

The first guide member 500R (guide member) is supported by the rear cover 19B. The upper portion of the first guide member 500R is pivotally supported by the rear cover 19B via the support stay 520. The support stay 520 is fixed to the upper surface of the guide main body 514. Further, the support stay 520 is rotatably supported around the center of the horizontal axis via the pivot shaft 520a by the support bracket 521 that supports the lower side of the suppression device 20. The support bracket 521 is fixed to the back surface (upper surface) of the rear cover 19B.

As shown in FIG. 33, a grounding member 518 is provided below the first guide member 500R (guide member) to ground the upper surface of the ridge R1 (field). The grounding member 518 has a fixing portion 518a fixed to the lower surface of the lower end portion of the first guide member 500R, and a grounding portion 518b having a curved grounding surface that is grounded on the upper surface of the ridge R1 (field).
Since the irrigation tube laying device 497 is planted in four rows in this embodiment, two sets of a tube roll 498, a roll attachment body 499, and a guide member 500 are provided. In the case of 1 set, in the case of 6-row planting, 3 sets are provided according to the number of seedlings to be planted.

In the irrigation tube laying device 497, the irrigation tube 496 is laid on the ridge R1 (in the field) as follows.
First, one end (the end on the unwinding side) of the irrigation tube 496 is fixed to the field before the transplanting work machine 4 is run. The transplanting work machine 4 is run with one end fixed to the field. Then, the tube roll 498 and the roll support 502 are integrally rotated by being pulled by the irrigation tube 496 (or the tube roll 498 rotates about the roll shaft 505 with respect to the roll support 502). Then, the irrigation tube 496 is unwound from the tube roll 498 and laid on the ridge R1 formed by the transplanting work machine 4.

The transplanting work machine 4 is provided with a multi-film laying device for laying a multi-film covering the ridge R1 (field) from above the irrigation tube 496 laid on the ridge R1 (field) at the front of the transplanting machine 3. You may be.
As shown in FIG. 32, the horizontal frame member 34C at the center of the rear frame 30 has a tubular first frame member 522R and a second frame member 523 inserted through the first frame member 522. The first frame member 522 is fixed to the rear ends of the connecting rod 202R and the connecting rod 202L. The second frame member 423 is fixed to the first frame member 522 so as to be adjustable in position in the width direction K2.

As shown in FIGS. 35 and 36, a support member 525 is attached to the first frame member 522 (support frame 26) via an attachment 524. The support frame 26 is supported by the machine frame 11. That is, the support member 525 is supported by the machine frame 11.
The fixture 524 has an upper plate 524a, a lower plate 524b, and a fastener 524c for fastening the upper plate 524a and the lower plate 524b. The upper plate 524a is formed of a rectangular plate and is arranged on the upper surface of the first frame member 522. The lower plate 524b is formed of a rectangular plate and is arranged on the lower surface of the first frame member 522. The fastener 524c has bolts provided at the four corners of the upper plate 524a and the lower plate 524b and inserted into the upper plate 524a and the lower plate 524b, and a nut screwed into the bolt.

The support member 525 is formed of a square columnar tubular material. The upper end of the support member 525 is fixed to the lower plate 524b and projects downward from the lower plate 524b. A support member 526 is inserted into the support member 525 from below. The support member 526 is fixed to the support member 525 with a pin 528 and a bolt 259 so that the height can be adjusted (up and down position can be adjusted). The rear portion of the mounting frame 527 is fixed to the lower end of the support column member 526. A central earth cultivator 23C is provided at the front of the mounting frame 527. As a result, the central earth cultivator 23C is attached to the support column member 526.

As shown in FIGS. 35 and 36, the support arm 530 is supported by the support column member 526 so as to be swingable up and down. The front portion of the support arm 530 is rotatably supported around a horizontal axis (an axial center extending in the width direction K2) via a pivot shaft 532 by a mounting piece 531 fixed to the lower part of the support column member 526. A wheel frame 533 is provided at the rear portion of the support arm 530, and a compression wheel 534 is rotatably attached to the wheel frame 533 around the center of the horizontal axis.

The suppression ring 534 is located behind the central ridge 23C and rolls the bottom 535a of the furrow groove 535 (groove between the first ridge R11 and the second ridge R12) formed by the central ridge 23C. Move to crush the bottom 535a. In this embodiment, the compression wheel 534 is formed of a tire.
As shown in FIG. 36, the suppression ring 534 overlaps with one planting tool and another planting tool in a lateral view. One planting tool is the first planting tool 137AL and the second planting tool 137AR for planting the seedling N1 in the first ridge R11. Other planting tools are the first planting tool 137BL and the second planting tool 137BR for planting the seedling N1 in the second ridge R12.

As shown in FIG. 36, the transplanting work machine 4 includes a suppression device 536 that urges the support arm 530 downward to suppress the suppression ring 534 toward the bottom 535a of the furrow groove 535. The repression device 536 is provided between the frame body 537 fixed to the support member 525 and the support arm 530. The frame body 537 includes a lower frame member 537a projecting rearward from the upper part of the support member 525, a vertical frame member 537b projecting upward from the rear portion of the lower frame member 537a, and a support piece provided on the upper part of the vertical frame member 537b. It has 537c and. The lower frame member 537a is located below step 542 (the footrest of the worker seated on the front chairs 231L and 231R), and projects rearward from step 542.

The repression device 536 has a rotating member 538, a vertical rod 539, and an urging member 540. The rotating member 538 is rotatably provided on the support piece 537c around the center of the horizontal axis. The upper part of the vertical rod 539 is inserted through the rotating member 538. The vertical rod 539 is movable (up and down) in the axial direction with respect to the rotating member 538. The lower portion of the vertical rod 539 is rotatably and pivotally supported around the center of the horizontal axis by a mounting piece 541 fixed to the wheel frame 533.

The urging member 540 is formed by a coil spring and is fitted on the outer circumference of the vertical rod 539 so as to be relatively movable in the axial direction. An upper spring receiving member 543 located between the rotating member 538 and the urging member 540 is fitted on the upper portion of the vertical rod 539 so as to be movable in the axial direction. A lower spring receiving member 544 located between the mounting piece 541 and the urging member 540 is fitted in the lower portion of the vertical rod 539 so as to be movable in the axial direction. Further, a positioning pin 545 is inserted in the lower part of the vertical rod 539. The positioning pin 545 is located below the lower spring receiving member 544. Further, the positioning pin 545 can be adjusted in position in the axial direction (vertical direction) of the vertical rod 539. By adjusting the position of the positioning pin 545 and compressing the urging member 540 between the positioning pin 545 and the rotating member 538, the compression ring 534 is urged downward and pressed against the bottom 535a of the furrow groove 535. Be done. Further, by adjusting the position of the positioning pin 545, the urging force of the urging member 540 can be adjusted.

The compression ring 534 may not be attached to the support arm 530 (it may not be vertically movable), or may be attached to a member fixed to the support column member 526 so as not to be vertically movable. In this case, it is preferable that the lower end of the compression ring 534 is installed so as to be located at the same height as the lower end of the central earth cultivator 23C or below the lower end of the central earth cultivator 23C.
The transplanting work machine 4 includes a tractor 1 having a vehicle body 6, a transplanting machine 3 which is attached to the tractor 1 and has a planting tool 137 for planting seedlings N1 in a field, and a first side of the vehicle body 6. 1 frame material 413R, a second frame material 413L provided on the other side of the vehicle body 6, and a mounting portion 412 provided on the first frame material 413R and the second frame material 413L and protruding forward from the vehicle body 6 side. It includes a mounting frame 409, and a transplant-related body (irrigation tank T1) that is a member or device related to the transplanting machine 3 and is mounted on the mounting portion 412.

According to this configuration, the support strength of the mounting frame 409 can be improved by the first frame member 413R provided on one side of the vehicle body 6 and the second frame member 413L provided on the other side of the vehicle body 6. .. As a result, the transplant-related body mounted on the mounting portion 412 protruding forward from the vehicle body 6 can be firmly supported by the mounting frame. As a result, a heavy object can be mounted on the mounting portion 412 that protrudes forward from the vehicle body 6.

Further, the transplanting work machine 4 is a first mounting portion 410 for mounting the first frame material 413R and the second frame material 413L to the vehicle body 6, and a mounting portion for mounting the first frame material 413R and the second frame material 413L to the vehicle body 6. It is provided with a second mounting portion 411 located behind the first mounting portion 410.
According to this, the support strength of the mounting frame 409 is improved by mounting the first frame material 413R and the second frame material 413L to the vehicle body 6 by the first mounting portion 410 and the second mounting portion 411 separated from each other in the front-rear direction. Can be done.

Further, the vehicle body 6 includes a prime mover E1, a front axle frame 401 protruding forward from the prime mover E1, a clutch housing 402 connected to the rear of the prime mover E1, and a mission case 403 connected to the rear of the clutch housing 402. The first mounting portion 410 has a first front mounting portion 410R for mounting the first frame material 413R on the front axle frame 401 side, and a second front mounting the front portion of the second frame material 413L on the front axle frame 401 side. The second mounting portion 411 includes the mounting portion 410L, the first rear mounting portion 411L for mounting the rear portion of the first frame member 413R to the clutch housing 402 or the mission case 403, and the rear portion of the second frame member 413L for the clutch housing 402. Alternatively, it includes a second rear mounting portion 411R to be mounted on the mission case 403.

According to this, the mounting frame 409 can be firmly supported by the vehicle body 6 of the tractor 1, and the supporting strength of the mounting frame 409 can be improved.
Further, the mounting portion 412 is a first portion 412a which is a front portion of the first frame member 413R and protrudes forward from the vehicle body 6, and a first portion 412a which is a front portion of the second frame member 413L and protrudes forward from the vehicle body 6. It has two sites 412b, a third site 412c that connects the front parts of the first site 412a and the second site 412b, and a fourth site 412d that connects the rear parts of the first site 412a and the second site 412b.

According to this, the mounting portion 412 can be firmly formed, and a heavy object can be mounted on the mounting portion 412.
Further, the transplant-related body is a tank (irrigation tank T1) for storing the liquid supplied to the seedlings to be planted by the planting tool 137.
In the present embodiment, since the supporting strength of the mounting frame 409 can be improved, even if the tank T1 having a large capacity is mounted, the tank T1 in the state of storing the liquid can be sufficiently supported. In other words, the capacity of the tank T1 can be increased.

Further, the transplanting work machine 4 is intermittently driven to flow the liquid in the tank T1 between the pump (irrigation pump 432) and the pump 432 and the planting tool 137. It is provided on the road and includes a check valve 434 that opens by the pressure of the liquid sent by the pump 432 when the pump 432 is driven and closes when the pump 432 is stopped to shut off the flow of the liquid.

According to this, since the pump 432 is intermittently driven, it is possible to suppress unnecessary power consumption and reduce the load applied to the pump 432. Further, since the check valve 434 is opened by the pressure of the liquid sent by the pump 432 to send the liquid to the planting tool 137, the mechanism for sending the liquid in the tank T1 to the planting tool 137 is easily configured. can do.

Further, the tank T1 has an outlet 436 for sending the stored liquid to the pump 432, and the outlet 436 is preferably located at a position higher than the check valve 434.
According to this, the flow path of the liquid from the tank T1 to the check valve 434 is always filled with the liquid. Therefore, as soon as the pump 432 is driven, the check valve 434 opens and the liquid can be sent to the planting tool 137, and the responsiveness is good.

Further, it is preferable that the headlights 426L and 426R provided in the front portion of the mounting frame 409 and located in front of the transplantation-related body are provided.
When the transplant-related body (irrigation tank T1) is mounted in front of the tractor 1, the transplant-related body becomes an obstacle and the headlight mounted on the tractor 1 cannot illuminate the front. However, by providing the headlights 426L and 426R at the front of the mounting frame 409, the front of the tractor 1 can be illuminated by the headlights 426L and 426R even if the transplant-related body is mounted.

Further, the bands 416L and 416R for pressing and fixing the transplant-related body to the mounting portion 412, the first mounting tool 420R for fixing one end side of the bands 416L and 416R to the mounting frame 409, and the transplant-related body 412 It is preferable to provide a second attachment 422R for movably attaching the other end side of the bands 416L and 416R to the attachment frame 409 so as to be pressed against the attachment frame 409.

According to this, the transplant-related body can be firmly fixed by the bands 416L and 416R, and the transplant-related body can be easily attached and detached.
Further, it is provided with a connector (suction hose 431) attached to the first frame body 537 or the second frame body 537 and connecting the transplantation-related body and the transplantation machine 3.
By attaching the connector to the first frame 537 or the second frame 537, the connector can be arranged along the first frame 537 or the second frame 537.

Further, the transplanting work machine 4 has at least one planting tool 137 that reciprocates up and down and rushes into the field when descending to plant seedlings, and a pump that sends liquid to the planting tool 137 and supplies the seedlings. The irrigation pump 432), which is a part of the movement period 462 from the top dead center position G1 to the bottom dead center position G2 and then returning to the top dead center position G1. It includes a pump 432 that is driven to perform liquid feeding in the period 463 and is stopped in the stop period 464, which is a period other than the supply period 463 in the movement period 462.

According to this, it is possible to provide a transplantation work machine capable of efficiently operating a pump to improve energy efficiency. For example, during the planting work of seedlings, the pump 432 is driven when the liquid supply to the seedlings is required, and the pump 432 is not driven when the liquid supply to the seedlings is not required, so that wasteful power consumption is consumed. It can be suppressed. In addition, unnecessary liquid (water) supplied (irrigated) to areas other than the planted part of the seedling can be eliminated. Further, since the pump 432 is not always driven, the load applied to the pump 432 can be reduced. As a result, early deterioration of the pump 432 can be prevented, and thus the life of the pump 432 can be extended.

The pump 432 may be a mechanical pump 432 driven by transmitting the power of the power source (electric motor 71) of the transplanting machine 3, or an electric pump driven by electricity. It may be a hydraulically driven pump or a hydraulically driven pump.
Further, the pump 432 is driven to feed the liquid when the planting tool 137 is lowered, and the driving is stopped when the planting tool 137 is located near the bottom dead center position G2 or the bottom dead center position G2. Is good.

When the planting tool 137 is lowered, the weights of the planting tool 137, the support 138, and the elevating device 139 act on the lowering of the planting tool 137. Therefore, by driving the pump 432 when the planting tool 137 is lowered, the pump 432 can be driven by utilizing the lowering force of the planting tool 137. In other words, the force with which the electric motor 71 drives the pump 432 can be reduced.

Therefore, the pump 432 should be stopped before the planting tool 137 is located at bottom dead center position G2.
Further, it is preferable to include a timing adjusting unit 449 for adjusting the stop timing for stopping the drive of the pump 432. According to this, the pump 432 can be stopped at a desired stop time.

When the transplanting work machine 4 includes a power source for driving the planting tool 137 and a power transmission system 448 for transmitting the power of the power source to the pump 432, the timing adjusting unit 449 may use the power transmission system. It is provided at 448. Further, in the case of an electric pump, a timing adjusting unit is incorporated in a control device that electrically controls the pump. In the case of a hydraulic pump, a timing adjusting unit is incorporated in a control device that controls switching of a control valve that controls the pump.

Further, the timing adjusting unit 449 is a member that is connected to the drive member 456 to which the rotational power from the power source is transmitted so as to be able to adjust the relative position in the rotational direction with respect to the drive member 456, from the drive member 456. It is preferable to have a driven member 457 that transmits the rotational power of the pump 432 to the pump 432 side.
According to this, the stop timing for stopping the drive of the pump 432 can be easily adjusted.

Further, the power transmission system 448 has an intermittent mechanism 480 that intermittently transmits the power of the power source to the pump 432 to drive and stop the drive of the pump 432 during the movement period 462, and the power source to the pump 432. A clutch mechanism 479 that interrupts and interrupts power transmission, and can switch between a connected state in which power is transmitted by the intermittent mechanism 480 and a disengaged state in which the power transmission by the intermittent mechanism 480 is cut off and the disconnection is held. And should have.

According to this, in the case of a field where liquid supply (irrigation) is unnecessary, or when the operation of the planting tool 137 is desired to be confirmed, the drive of the pump 432 by the intermittent mechanism 480 can be stopped by the clutch mechanism 479. It is possible to prevent unnecessary power consumption.
Further, the clutch mechanism 479 is a rotating body located on the downstream side of the drive rotating body 483 and the drive rotating body 483 in the power transmission direction, and is in the rotating direction with respect to the driving rotating body 483 in the adjustment range of the timing adjusting unit 449. It is preferable to have a driven rotating body 484 that meshes at one position of.

According to this, when the clutch mechanism 479 is connected after the clutch mechanism 479 is disengaged, the timing adjusted by the timing adjusting unit 449 is not disturbed.
Further, the transplant working machine 4 is provided in the liquid flow passage between the pump (irrigation pump 432) and the planting tool 137, and is opened by the pressure of the liquid sent by the pump 432 when the pump 432 is driven. It is provided with a check valve 434 that closes when the pump 432 is stopped to shut off the flow of liquid.

According to this, the structure of the liquid supply device (irrigation device 430) can be simplified.
Further, a plurality of planting tools 137 are provided, and the pump (irrigation pump 432) is preferably composed of a single pump 432 that delivers liquid to all the planting tools 137. Compared with the case where a plurality of pumps 432 are provided, the driving force can be reduced and the configuration can be simplified.

The transplanting work machine 4 includes planting devices 68A and 68B for planting seedlings in the field, transplanting frames 69A and 69B provided with planting devices 68A and 68B, and a power source (electric motor 71) provided on the transplanting frame 69A. From the planting drive shaft 108 that transmits the power from the power source and drives the planting devices 68A and 68B, the power take-out unit 109 that takes out the power from the middle part of the planting drive shaft 108, and the power take-out unit 109. Power transmission system 261 that transmits power from the output shaft 261 and power transmission system 448 that transmits power from the output shaft 261 and a pump (irrigation) that discharges the liquid supplied to the seedlings, driven by the power from the power transmission system 448. It is equipped with a pump 432).

According to this configuration, power is taken out from the middle part of the planting drive shaft 108 for driving the planting devices 68A and 68B, and the power is transmitted to the pump 432. As a result, a protruding portion is not formed on the outer end side of the transplanting machine 3 in the width direction K2, and the transplanting machine 3 can be made compact.
Further, since the power is transmitted from the power source provided in the transplant frame 69A to the planting devices 68A, 68B and the pump 432, the power transmission system for transmitting the power from the power source to the planting devices 68A, 68B and the pump 432 is simplified. Can be achieved.

Further, the transplanting work machine 4 includes a seedling supply device 72B that supplies seedlings to the planting device 68B, and a power transmission unit 259B that transmits power from the output shaft 261 to the seedling supply device 72B.
According to this, the output shaft 261 can be shared by the shaft that transmits power to the seedling supply device 72B and the shaft that transmits power to the pump 432, and the structure can be simplified.
Further, the planting device includes a first planting device 68A and a second planting device 68B different from the first planting device 68A, and the transplant frame is provided with a power source and a first planting device 68A. It is preferable to include a first transplant frame 69A and a second transplant frame 69B provided with a pump 432 and a second planting device 68B.

According to this, the weight balance of the transplanting work machine 4 in the width direction K2 can be improved.
Further, the planting device includes a first planting device 68A and a second planting device 68B different from the first planting device 68A, and the transplanting frame is a first planting device 68A provided with the first planting device 68A. The planting drive shaft 108 includes a transplanting frame 69A and a second transplanting frame 69B provided with a second planting device 68B at intervals in the width direction K2 with respect to the first transplanting frame 69A. , It is preferable to be provided over the first transplant frame 69A and the second transplant frame 69B to drive the first planting device 68A and the second planting device 68B.

According to this, the structure of the power transmission system to the first planting device 68A and the second planting device 68B can be simplified.
Further, the power transmission system 448 preferably has a transmission mechanism 481 capable of shifting the power from the power source and transmitting the power to the pump (irrigation pump 432).
According to this, the discharge amount of the pump 432 can be changed by the speed change mechanism 481, and the discharge amount of the pump 432 can be easily changed by changing the power transmitted to the pump 432. In addition, it is possible to easily adjust the supply amount of the liquid to the seedlings to the supply amount according to the seedlings.

Further, the transmission mechanism 481 includes a first gear 491 to which power from the output shaft 467 is transmitted and exchangeable, and a second gear 492 which meshes with the first gear 491 to transmit power to the pump 432 and is exchangeable. It is better to have.
According to this, shifting can be easily performed by exchanging gears. In addition, it can be configured compactly and the structure can be simplified.

Further, the power transmission system 448 includes an intermittent mechanism 480 that intermittently transmits the power from the output shaft 467 to the pump 432, and the transmission mechanism 481 is provided on the downstream side of the intermittent mechanism 480 in the power transmission direction. Is good.
According to this, the discharge amount (irrigation amount) of the pump 432 by the speed change mechanism 481 can be changed without changing the liquid supply time (irrigation time) and the supply timing (irrigation timing) by the intermittent mechanism 480.

In addition, a first case component 471 that forms a part of the first storage part 476 that houses the intermittent mechanism 480, and a second case structure that forms the first storage part 476 in cooperation with the first case structure 471. A lid 473 that forms a second accommodating portion 477 that accommodates the transmission mechanism 481 in cooperation with the second case configuration 472, and a lid 473 that openably closes the second accommodating portion 477. It is good to have it.

According to this, when the lid body 473 is opened, the second accommodating portion 477 can be opened to access the transmission mechanism 481, without removing the first case component 471 and the second case component 472 from each other. The first gear 491 and the second gear 492 can be replaced.
Further, the intermittent mechanism 480 preferably has a drive gear 488 to which power from a power source is transmitted, and a driven gear 489 that intermittently meshes with the drive gear 488 to intermittently drive the pump 432.

According to this, the intermittent mechanism 480 can be easily configured.
Further, the planting device has a planting tool 137 that is reciprocated up and down by the power from the planting drive shaft 108, and the power transmission system 448 transmits the power when the planting tool 137 descends. It is preferable to drive the pump 432 and stop the power transmission when the planting tool 137 rises to stop the driving of the pump 432.

When the planting tool 137 is lowered, the weights of the planting tool 137, the support 138, and the elevating device 139 act on the lowering of the planting tool 137. Therefore, by driving the pump 432 when the planting tool 137 is lowered, the pump 432 can be driven by utilizing the lowering force of the planting tool 137. Further, the force of the power source to drive the pump 432 can be reduced by driving the pump 432 when the planting tool 137 descends and stopping the driving of the pump 432 when the planting tool 137 rises. it can.

Further, it is preferable that the traveling body 1 having the prime mover E1 is provided with the traveling body 1 to which the transplant frames 69A and 69B are mounted.
According to this, since the driving of the planting devices 68A and 68B and the pump 432 does not use the prime mover E1 of the traveling body 1 as a power source, the power transmission system can be simplified.
Further, the transplanting work machine 4 has an irrigation tube 3 having at least one planting tool 137 for planting seedlings in the field, and an irrigation tube 496 unwound from the rotatable tube roll 498 and laid in the field. It is equipped with a laying device 497.

According to this, the planting work of seedlings and the laying work of the irrigation tube 496 can be performed in one process with one machine, and the work efficiency can be improved.
Further, the irrigation tube laying device 497 is preferably provided with a guide member 500 that guides the irrigation tube 496 unwound from the tube roll 498 to the field.
According to this, the guide member 500 can smoothly guide the irrigation tube 496 to the field.

Further, a plurality of planting tools 137 are provided, and the guide member 500 guides the irrigation tube 496 to be laid at a corresponding position between the adjacent planting tools 137 in the width direction K2.
According to this, the guide member 500 can surely lay the irrigation tube 496 between the two adjacent rows.
Further, the transplanting work machine 4 includes a ground working machine 2 which is arranged in front of the transplanting machine 3 and performs work on the field, and the tube roll 498 extends above the ground working machine 2 in the width direction K2. The guide member 500 is rotatably provided around the axis, and the guide member 500 is provided in an inclined shape that shifts downward from the tube roll 498 side toward the field toward the rear.

Even if the tube roll 498 is arranged above the ground work machine 2, the guide member 500 can smoothly guide the irrigation tube 496 to the field (ridge R1).
Further, the front chairs 231L and 231R provided above the ground work machine 2 and in front of the transplanting machine 3 are provided, the tube roll 498 is provided on the front side of the front chairs 231L and 231R, and the guide member 500 is a front chair. It is preferable that it is provided below 231L and 231R.

According to this, the tube roll 498 can be arranged by using the empty space in front of the front chairs 231L and 231R, and the guide member 500 can be arranged by using the empty space below the front chairs 231L and 231R. it can. As a result, the tube roll 498 and the guide member 500 can be compactly incorporated into the transplanting work machine 4.
Further, the ground working machine 2 has a cultivated portion 18 for cultivating the field and a rear cover 19B which is swingable up and down and forms the upper surface of the ridge R1 with the soil cultivated in the cultivated portion. The 500 is preferably located above the rear cover 19B and supported by the rear cover 19B.

According to this, the irrigation tube 496 can be smoothly guided by the guide member 500 on the upper surface of the ridge R1 formed by the transplanting work machine 4. Further, the guide member 500 can be made to follow the upper surface of the ridge R1.
Further, the irrigation tube laying device 497 has a support stay 520 that pivotally supports the upper portion of the guide member 500 on the rear cover 19B, and a grounding member 518 provided below the guide member 500 and grounding on the upper surface of the field. Is good.

According to this, the guide member 500 can be made to follow the upper surface of the ridge R1 well.
Further, the ground work machine 2 has a gear case 12 into which power is input, and support arms 13L and 13R protruding from the gear case 12 in the width direction K2, and the irrigation tube laying device 497 supports the tube roll 498 with the support arm 13L. It is preferable to have a mounting body 499 to be attached to 13R.

According to this, the tube roll 498 can be attached by using the support arms 13L and 13R, and the attachment structure can be simplified.
Further, the guide member 500 is an insertion port 515 into which the irrigation tube 496 is inserted, and has a wide insertion port 515 in the width direction K2, an insertion port 519 for inserting the inserted irrigation tube 496, and an insertion port 519. It is preferable to have a rotatable guide pin 517 that is provided and with which the irrigation tube 496 abuts.

According to this, the irrigation tube 496 unwound from the tube roll 498 by the wide insertion port 515 can be smoothly inserted into the guide member 500. In addition, the irrigation tube 496 delivered from the guide member 500 can be smoothly delivered to the field by the guide pin 517.
Further, a multi-film laying device for laying the multi-film from above the irrigation tube 496 provided in the front portion of the transplanting machine 3 and laid in the field may be provided.

According to this, the seedling planting work, the irrigation tube 496 laying work, and the multi-film laying work can be performed in one process with one machine, and the work efficiency can be improved.
Further, it is preferable to provide a plurality of pairs of one irrigation tube 496 laid at a position corresponding to two adjacent planting tools 137 and one tube roll 498 from which the irrigation tube 496 is unwound. ..

According to this, the irrigation tube laying device 497 for laying the irrigation tube 496 between the two rows of seedlings can be satisfactorily adapted to the transplanting work machine 4 for other row planting.
The transplanting work machine 4 includes a machine frame 11, a first side hilling device 23R provided on one side behind the machine frame 11, and a second side portion provided on the other side behind the machine frame 11. It is provided between the earthenware 23L, the first side earthenware 23R, and the second side earthenware 23L, and forms the first ridge R11 in cooperation with the first side earthenware 23R. The central earthenware 23C that forms the second ridge R12 in cooperation with the two side earthenware 23L, and the first planting device 68A that is mounted behind the machine frame 11 and plants seedlings in the first ridge R11. A second planting device 68B, which is mounted behind the machine frame 11 and plants seedlings in the second ridge R12, is provided.

According to this, the work of forming the ridge R1 and the work of planting seedlings can be performed in one step with one machine, and the work efficiency can be improved.
Further, it is preferable to provide a compression ring 534 which is provided behind the central ridger 23C and suppresses the bottom portion 535a of the furrow groove 535 between the first ridge R11 and the second ridge R12.
If the soil collapses in the furrow groove 535 formed by the central earth cultivator 23C and the furrow groove 535 is filled, it becomes difficult to drain the water when it rains. Further, due to the landslide, the depth becomes shallower than the predetermined groove depth (lower than the predetermined ridge height). By suppressing the bottom portion 535a of the furrow groove 535 created by the suppression ring 534, the bottom portion 535a of the furrow groove 535 can be finished cleanly, and drainage can be improved. Further, by pressing the collapsed soil, the furrow groove 535 can be formed to a predetermined groove depth.

Further, it is preferable to provide a suppression device 536 that suppresses the suppression ring 534 toward the bottom 535a.
According to this, the suppression ring 534 can satisfactorily suppress the bottom portion 535a of the furrow groove 535.
Further, the transplanting work machine 4 has a support member 525 supported by the machine frame 11, a support member 526 supported by the support member 525 with adjustable height, and a central earth cultivator 23C attached, and a support member 525. It is preferable that the support arm 530 is supported so as to be swingable up and down and to which the suppression ring 534 is attached, and the support arm 530 is urged downward by the suppression device 536.

According to this, since the suppression ring 534 swings up and down, the accumulation of soil on the member supporting the suppression ring 534 is reduced as compared with the case where the suppression ring 534 is fixed. In addition, it is possible to cope with some landslides. Further, the height of the central earth cultivator 23C can also be adjusted.
Further, the transplanting work machine 4 includes a machine frame 11, a cultivated portion 18 that cultivates the field, and a rear cover 19B that is swingable up and down and forms the upper surface of the ridge R1 with the soil cultivated in the cultivated portion 18. The ground work machine 2 is provided with a support frame 26 supported by the machine frame 11 with adjustable height, and gauge wheels 27L and 27R provided on the support frame 26. The second side ridger 23L and the central hiller 23C are preferably attached to the support frame 26.

According to this, tilling and forming of the ridge R1 can be performed in one process with one machine. Further, even if the tillage depth is adjusted by adjusting the height of the support frame 26 and changing the height position of the ground work machine 2, the first side cultivator 23R, the second side cultivator 23L and Since the height relationship between the central earthenware 23C and the gauge wheels 27L and 27R does not change, it is not necessary to adjust the heights of the first side earthenware 23R, the second side earthenware 23L and the central earthenware 23C.

Further, on the side of the first planting device 68A, the first side chair 42R arranged on the side opposite to the second planting device 68B and the side of the second planting device 68B. Therefore, the second side chair 42L arranged on the side opposite to the first planting device 68A and the first side chair 42R located behind the first side soil cultivator 23R are supported. It is preferable to provide the first rear support wheel 213R and the second rear support wheel 213L which is located behind the second side earthenware 23L and supports the second side chair 42L.

According to this, the weight of the operator seated on the first side chair 42R is applied to the first rear support wheel 213R located behind the first side cultivator 23R. As a result, the bottom of the groove formed by the first side soil cultivator 23R is suppressed by the first rear support ring 213R. Further, the weight of the operator seated on the second side chair 42L is applied to the second rear support wheel 213L located behind the second side earthenware 23L. As a result, the bottom of the groove formed by the second side soil cultivator 23L is suppressed by the second rear support ring 213L.

The first rear support ring 213R suppresses the bottom of the groove formed by the first side earthenware 23R, and the second rear support wheel 213L suppresses the bottom of the groove formed by the second side earthenware 23L. Therefore, it is not necessary to separately provide the suppression ring 534, and the members can be used in combination.
Further, the first planting device 68A has one planting tool 137AL, 137AR for planting seedlings in the first ridge R11, and the second planting device 68B has another planting tool 68B for planting seedlings in the second ridge R12. It has planting tools 137BL, 137BR, and the suppression ring 534 preferably overlaps one planting tool 137AL, 137AR and another planting tool 137BL, 137BR in a side view.

When seedlings are planted in the ridges R1 with a planting tool, even if the ridges R1 cause a landslide, they are held down by the suppression ring 534, so that the furrow groove 535 can be prevented from becoming shallow.
Although the present invention has been described above, it should be considered that the embodiments disclosed this time are exemplary in all respects and are not restrictive. The scope of the present invention is shown by the scope of claims rather than the above description, and it is intended that all modifications within the meaning and scope equivalent to the scope of claims are included.

37 to 40 show other embodiments.
In this embodiment, the transplanting work machine 4 includes a multi-film laying device 300 for laying the multi-film F1 on the ridge R1. Further, the transplanting work machine 4 is not equipped with the central soil cultivator equipped in the transplanting work machine 4 in the above embodiment, and the first side cultivator 23R and the second side cultivator 23L have one ridge. It is formed. In addition, there is no suppression ring for suppressing the bottom of the groove formed by the central earth cultivator. Other configurations are the same as those in the above embodiment.

The multi-film laying device 300 is provided behind the irrigation tube laying device 497.
As shown in FIGS. 37 to 40, the multi-film laying device 300 is provided at the front portion of the transplanting machine 3. The multi-film laying device 300 includes a support frame 26, a film roll 301, a grooving member 302, a gauge ring 27, a film presser (film presser portion) 303, and a soil covering member 304.

The support frame 26 is attached to the tractor (traveling body) 1 via the rotary cultivator 2. The film roll 301 is provided on the support frame 26. Further, the film roll 301 is formed by winding the multi-film F1 around the axis extending in the width direction K2. The grooving member 302 forms an embedding groove in the field for embedding the widthwise end portion of the multi-film F1 unwound from the film roll 302 and laid on the ridge R1. The film presser 303 presses both ends of the laid multi-film F1 in the width direction K2 inward of the gauge ring 27 in the width direction K2. The gauge ring 27 presses both ends of the laid multi-film F1 in the width direction K2 outside the width direction K2 of the film presser 303. The soil covering member 304 covers the side edge portion of the multi-film F1 pressed by the film presser 303 or the gauge ring 27 with soil.

As shown in FIGS. 38 and 39, the film roll 301 is provided from one side to the other side of the rear frame 30 in the width direction K2. The grooving member 302, the film presser 303, the gauge ring 27, and the soil covering member 304 are provided on the left side and the right side of the support frame 26 (rear frame 30). The left grooving member 302L is located in front of the left gauge ring 27L and the left film presser 303L. The soil covering member 304L on the left is located behind the gauge ring 27L and the film presser 303L. The right grooving member 302R is located in front of the right gauge wheel 27R and the right film presser 303R. Further, the film presser 303L is located inward K4 in the width direction of the gauge ring 27L. The film presser 303R is located inward K4 in the width direction of the gauge wheel 27R. The soil covering member 304R on the right is located behind the gauge wheel 27R and the film presser 303R.

As shown in FIG. 38, the multi-film F1 is unwound from the film roll 301 and laid on the ridge R1 from above the irrigation tube 486 laid on the ridge R1 (field).
As shown in FIGS. 39 and 40, the multi-film laying device 300 has a roll support shaft 328 that supports the film roll 301 through the axial direction and a roll support that supports the roll support shaft 328 so as to be vertically adjustable. It includes parts 329L and 329R. The film roll 301 (multi-film F1) is formed to have a width extending over the width direction K2 of the ridge R1. The roll support portion 329L is provided on the left first support 306L described later, and the roll support portion 329R is provided on the right first support 306R described later.

As shown in FIGS. 39 and 40, the multi-film laying device 300 has a left first support 306L that supports the grooving member 302L so as to be vertically adjustable and position adjustable in the width direction K2. Further, the multi-film F1 laying device 300 has a right first support 306R that supports the grooving member 302R so that the vertical position can be adjusted and the position can be adjusted in the width direction K2. The first supports 306L and 306R are provided on the support frame 26 (the front portion of the rear frame 30).

The grooving member 302 is formed in a disk shape, and is provided in an inclined shape that shifts to the outer K3 in the width direction toward the rear. By advancing the tractor 1, the grooving member 302 continuously forms an embedded groove in the lateral groove of the ridge R1 or the side portion of the ridge R1 along the longitudinal direction of the ridge R1.
By adjusting the positions of the grooving member 302 in the vertical direction and the width direction K2, the embedded groove can be adjusted to the three first to third positions. The first position is a position where an embedded groove is formed at a corner portion between the upper surface and the side surface of the ridge R1. The second position is a position where an embedded groove is formed between the corner portion of the ridge R1 and the lower end of the side surface. The third position is a position where an embedded groove is formed in the groove formed by the first side cultivator 23R and the second side cultivator 23L. The multi-film F1 may have different film width dimensions, and the position of the grooving member 302 can be adjusted according to the width of the multi-film F1.

As shown in FIGS. 39 and 40, the multi-film laying device 300 has a left second support 346L that supports a film presser 303L and a soil covering member 304L. Further, the multi-film laying device 300 has a right second support 346R that supports the film presser 303R and the soil covering member 304R. The second supports 346L and 346R are provided on the support frame 26 (rear portion of the rear frame 30).

The second support body 346L has a first frame body 347L and a second frame body 348L supported by the first frame body 347L. The first frame body 347L is vertically and vertically adjustable to be supported by a support portion 349L fixed to the rear end of the rear member 38L. The soil covering member 304L is supported by the first frame body 347L via the support device 379L. By adjusting the position of the first frame body 347 up and down, the soil covering member 304L can be adjusted up and down.

The second support 346R also has a first frame body 347R and a second frame body 348R. The first frame body 347R is supported by a support portion 349R fixed to the rear end of the rear member 38R so as to be vertically adjustable. The soil covering member 304R is supported by the first frame body 347R via the support device 379R.
The two-frame body 348L has a first support member 356L that supports the film presser 303L so as to be vertically adjustable, and a second support member 357L that supports the first support member 356L so that the position can be adjusted in the width direction K2. The first support member 356L has an urging member 368L that urges the film presser 303L downward.

The two-frame body 348R also has a first support member 356R that supports the film presser 303R so as to be vertically adjustable, and a second support member 357R that supports the first support member 356R so that the position can be adjusted in the width direction K2. The first support member 356R also has an urging member 368R that urges the film presser 303R downward.
By adjusting the position of the film presser 303 in the vertical and width directions K2, the position of the film presser 303 can be adjusted between the first pressing position and the second pressing position. The first pressing position is a position where the end portion of the multi-film F1 is pressed at the corner portion between the upper surface and the side surface of the ridge R1. That is, it is a position corresponding to the first position of the grooving member 302. The second pressing position is a position where the end portion of the multi-film F1 is pressed between the corner portion of the ridge R1 and the lower end of the side surface. That is, it is a position corresponding to the second position P2 of the grooving member 302. The pressing position of the film presser 303 can be changed according to the grooving position of the grooving member 302.

As shown in FIG. 38, the gauge wheel 27R can roll behind the first side cultivator 23R and press the right end of the multi-film F1 in the width direction K2. The gauge wheel 27L can roll behind the second side earthenware 23L and press the left end of the multi-film F1 in the width direction K2.
The gauge ring 27 presses the end of the multi-film F1 corresponding to the third position of the grooving member 302.

2 Ground work machine 3 Transplant machine 12 Gear case 13L Support arm 13R Support arm 18 Tillage part 19B Rear cover 137 Planting tool 231L Front chair (1st front chair)
231R front chair (second front chair)
300 Multi-film laying device 496 Irrigation tube 497 Irrigation tube laying device 498 Tube roll 499 Mounting body 500 Guide member 515 Insertion port 517 Guide pin 518 Grounding member 519 Insertion / outlet 520 Support stay K2 Width direction R1 ridge

Claims (9)

A transplanter having at least one planting tool for planting seedlings in the field,
An irrigation tube laying device with an irrigation tube that is unwound from a rotatable tube roll and laid in the field,
A ground work machine that is placed in front of the transplant machine and works on the field,
With
The ground work machine has a cultivated portion for cultivating a field and a rear cover that is swingable up and down and forms an upper surface of a ridge with soil cultivated in the cultivated portion.
The irrigation tube laying device
A guide member that guides the irrigation tube unwound from the tube roll to the field, and
A support stay that pivotally supports the upper part of the guide member to the rear cover, and
A transplanting work machine provided below the guide member and having a grounding member that touches the upper surface of the field. A plurality of the planting tools are provided.
The transplanting work machine according to claim 1, wherein the guide member guides the irrigation tube to be laid at a position corresponding to between adjacent planting tools in the width direction. The tube roll is rotatably provided around an axis extending in the width direction above the ground working machine.
The transplanting work machine according to claim 1 or 2, wherein the guide member is provided in an inclined shape in which the guide member moves downward from the tube roll side toward the field toward the rear. A front chair provided above the ground work machine and in front of the transplant machine is provided.
The tube roll is provided on the front side of the front chair.
The transplant work machine according to any one of claims 1 to 3, wherein the guide member is provided below the front chair. The transplant working machine according to any one of claims 1 to 4, wherein the guide member is arranged above the rear cover and supported by the rear cover. A transplanter having at least one planting tool for planting seedlings in the field,
An irrigation tube laying device with an irrigation tube that is unwound from a rotatable tube roll and laid in the field,
A ground work machine that is placed in front of the transplant machine and works on the field ,
With
The ground work machine has a gear case into which power is input and a support arm protruding in the width direction from the gear case.
The irrigation tube laying device is a transplant working machine having an attachment body for attaching the tube roll to the support arm. The guide member is an insertion port into which the irrigation tube is inserted and is wide in the width direction, an insertion port for inserting the inserted irrigation tube, and the irrigation tube provided at the insertion port. The transplant working machine according to any one of claims 1 to 5 , further comprising a rotatable guide pin with which the head is in contact. The transplanting operation according to any one of claims 1 to 7, further comprising a multi-film laying device for laying a multi-film from above the irrigation tube laid in the field, which is provided in the front portion of the transplanting machine. Machine. Any one of claims 1 to 8 comprising a plurality of pairs of one irrigation tube laid at a position corresponding to two adjacent planting tools and one tube roll from which the irrigation tube is unwound. The transplant work machine described in the section.

Images