JP2018102191A - Transplanting working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transplanting working machine that allows a transplanter to be compact and simplifies a power transfer system from a power source to a planting device and a pump.SOLUTION: A transplanting working machine includes a planting device for planting seedlings in a farm field, a transplanting frame to which the planting device is provided, a power source provided to the transplanting frame, a planting drive shaft to which the power from the power source is transmitted and which drives the planting device, a power take-out part for taking out the power from a middle part of the planting drive shaft, an output shaft to which the power from the power take-out part is transmitted, a power transmission system for transmitting the power from the output shaft, and a pump driven by the power from the power transmission system for discharging liquid supplied to the seedlings.SELECTED DRAWING: Figure 9B

Description

  The present invention relates to a transplanting machine for planting seedlings and supplying liquid (water, liquid fertilizer, etc.) to the seedlings to be planted.

Conventionally, the technique disclosed in Patent Document 1 is known as a transplanter.
The transplanting machine disclosed in Patent Document 1 includes a traveling body and a transplanting machine attached to the traveling body. The transplanter has a planting device for planting seedlings in a field. Moreover, a transplanting machine has a pump which supplies water to a planting apparatus, and waters the seedling planted by this field with this pump. The power from the engine of the traveling body is transmitted to the planting drive shaft of the transplanter, and the planting device and the pump are driven by the power from the planting drive shaft.

JP 2000-139120 A

  In the transplanting machine disclosed in Patent Document 1, the planting drive shaft extends in the width direction, and a power take-out portion that transmits power to the pump is provided at the end in the width direction of the planting drive shaft. It has been. A pump and a power transmission mechanism for transmitting power from the take-out part to the pump are provided behind the take-out part. For this reason, the part protruded to the outer end side of the width direction of a transplanter is formed, and a transplanter becomes long in the width direction. Further, if the power from the engine of the traveling body is transmitted to the planting device and the pump, the power transmission system becomes complicated.

  Therefore, in view of the above problems, the present invention provides a transplanter that can reduce the size of the transplanter and can simplify the power transmission system from the power source to the planting device and the pump. Objective.

  A transplanting machine according to one aspect of the present invention includes a planting device for planting seedlings in a field, a transplant frame provided with the planting device, a power source provided in the transplant frame, and a power source from the power source. A planting drive shaft to which power is transmitted and drives the planting device; a power take-out unit for taking out power from a midway portion of the planting drive shaft; and an output shaft to which power from the power take-out unit is transmitted; A power transmission system that transmits power from the output shaft; and a pump that is driven by the power from the power transmission system and that discharges the liquid supplied to the seedlings.

Moreover, the transplanting machine includes a seedling supply device that supplies seedlings to the planting device, and a power transmission unit that transmits power from the output shaft to the seedling supply device.
The planting device includes a first planting device and a second planting device different from the first planting device, and the transplant frame includes the power source and the first planting device. And a second transplantation frame provided with the pump and the second implantation device.

  The planting device includes a first planting device and a second planting device different from the first planting device, and the transplant frame includes a first planting device provided with the first planting device. A transplant frame, and a second transplant frame provided at a distance in the width direction with respect to the first transplant frame and provided with the second planting device, and the planting drive shaft includes Provided over one transplantation frame and the second transplantation frame to drive the first planting device and to drive the second planting device.

The power transmission system includes a speed change mechanism capable of shifting power from a power source and transmitting the power to the pump.
The transmission mechanism includes a first gear that can exchange power from the output shaft and can be exchanged, and a second gear that can mesh with the first gear and transmit power to the pump and can be exchanged. .
The power transmission system includes an intermittent mechanism that intermittently transmits power from an output shaft to the pump, and the transmission mechanism is provided on the downstream side of the intermittent mechanism in the power transmission direction.

In addition, a first case structure that forms part of the first housing portion that houses the intermittent mechanism, a second case structure that forms the first housing portion in cooperation with the first case structure, A lid that forms a second housing portion that houses the speed change mechanism in cooperation with the second case structure, and that covers the second housing portion so as to be openable.
The intermittent mechanism includes a drive gear to which power from a power source is transmitted and a driven gear that intermittently meshes with the drive gear and intermittently drives the pump.

The planting device includes a planting tool that is reciprocated up and down by power from the planting drive shaft, and the power transmission system transmits power when the planting tool is lowered. The pump is driven, and when the planting tool ascends, the transmission of power is stopped and the driving of the pump is stopped.
Moreover, it is a traveling body which has a motor | power_engine, Comprising: The traveling body with which the said transplant frame is mounted | worn is provided.

The transplanting machine takes power from the middle part of the planting drive shaft that drives the planting device and transmits the power to the pump. Thereby, a projecting part is not formed on the outer end side in the width direction of the transplanter, and the transplanter can be made compact.
Moreover, since power is transmitted from the power source provided in the transplant frame to the planting device and the pump, it is possible to simplify the power transmission system that transmits power from the power source to the planting device and the pump.

It is the whole transplantation machine side view. It is the side view which abbreviate | omitted a part of transplanting machine. It is a schematic plan view of a ground working machine and a transplanting machine. It is a schematic rear view of a transplanter. It is a side view which shows the connection relation of a machine frame and a transplant machine frame. It is a top view which shows the periphery of a front chair. It is a top view which shows a front chair, a side chair, and the position of an operator. It is side surface partial sectional drawing of a 1st height change apparatus. It is a schematic block diagram which shows a power transmission system. It is a systematic diagram which shows the power transmission system of the whole transplanter. It is a side view of a transplant frame and a planting apparatus. It is a top view of a transplant frame. It is a rear view of a transplantation frame. It is a side view of a planting tool stop mechanism. It is a top view of a planting tool stop mechanism. It is a top view of a planting apparatus. It is an operation | movement figure which shows the raising / lowering operation | movement of a planting tool. It is a schematic plan view of a seedling supply device. It is a back sectional view of a seedling supply device. It is an arrangement plan of a lid of a supply cup. It is a side view of a tractor. It is a side view of a tank and an attachment frame. It is a top view of a tank and an attachment frame. It is a front view of a tank and an attachment frame. It is the schematic of an irrigation apparatus. It is a side view of a planting apparatus. It is a side view of a pump and a power transmission device. It is a front view of a pump and a power transmission device. It is a side view of a timing adjustment part. It is a front fragmentary sectional view of a timing adjustment part. It is a systematic diagram of a power transmission system. It is sectional drawing of a power transmission device. It is a side view of an intermittent mechanism. It is a side view of a speed change mechanism. It is a side view of a final transmission mechanism. It is a top view of an irrigation tube laying device, a cultivator, and a pressure reducing wheel. It is a side view of an irrigation tube laying device. It is an enlarged plan view of an irrigation tube laying device. It is a side view which shows a central mortar and a pressure wheel. It is an enlarged side view which shows a central mortar and a pressure wheel.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings as appropriate.
FIG.1 and FIG.2 has shown the transplanting work machine 4 which can plant a seedling (transplant) while driving | running | working. In other words, the transplanting machine 4 includes the traveling body 1 and the transplanting machine 3 attached to the rear of the traveling body 1. In addition, 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 attached to the rear part of the traveling body 1, and the transplanter 3 is attached to the ground work machine 2. That is, in this embodiment, the transplanting work machine 4 is a working machine that can plant seedlings (planting) together with ground work (cultivation, etc.) in one step while traveling with a single machine. Furthermore, the transplanting machine 4 is provided with erecters 23L, 23R, and 23C. That is, the transplanting work machine 4 of the present embodiment is a working machine that can perform tilling, raising, and seedling planting in one process with a single machine.

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

  1 and 2 are side views of the transplanter 4. Unless otherwise specified in the embodiment, the front side (the left side in FIGS. 1 and 2) of the driver seated on the driver's seat 5 of the tractor 1 is the front, the rear side of the driver (the right side in FIGS. 1 and 2) is the rear, The driver's left side (front side in FIGS. 1 and 2) is described as the left side, and the driver's right side (back side in FIGS. 1 and 2) is described as the right side. 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 the arrow K3 in FIG. 3 will be described as the outer side in the width direction, and the direction of the arrow K4 in FIG. The outward in the width direction is a direction from the center in the width direction of the tractor 1 toward the right or left. In other words, the outward in the width direction is the direction in the width direction K2 and away from the center of the tractor 1 in the width direction. The inner side in the width direction is the direction opposite to the outer side in the width direction. In other words, the inward in the width direction is the direction that is the width direction K2 and approaches the center of the tractor 1 in the width direction.

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 (running body) 1 includes a vehicle body 6, a front wheel 7 </ b> A attached to the front portion of the vehicle body 6, and a rear wheel 7 </ b> B attached to the rear portion of the vehicle body 6. The tractor 1 can travel forward or backward by the front wheel 7A and the rear wheel 7B.

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

  As shown in FIGS. 2 and 3, the rotary tiller 2 has a machine frame (work machine frame) 11. The machine casing 11 includes a gear case 12, a left support arm 13 </ b> L, a right support arm 13 </ b> R, 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 protrudes from the left part of the gear case 12 to the left. The support arm 13R protrudes from the right part of the gear case 12 to the right. The upper part of the transmission case 14 is attached to the left end of the support arm 13L. The upper part of the side frame 15 is attached to the right end 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 number of tilling claws 17 are fixed to the outer periphery of the rotary shaft 16 via brackets. The rotary shaft 16 and the tilling claw 17 form a tilling portion 18.

The upper part of the tillage part 18 is covered with an upper cover 19A. The rear of the tillage part 18 is covered with a rear cover 19B. The rear cover 19B has an upper end pivotally supported by the upper cover 19A and can swing up and down. The rear cover 19 </ b> B is biased downward by the pressure device 20. The pressure 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 through 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 rotating shaft 16 is rotated in the arrow A1 direction in FIG. When the rotating shaft 16 rotates in the A1 direction, the tilling claw 17 tills the soil and releases it to the rear rear cover 19B. The soil cultivated by the cultivator 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 cage R1 is formed by three erecters 23L, 23R, and 23C. That is, the ridge R1 is formed by the ridgers 23R, 23L, and 23C into two ridges (2 ridges), a first ridge R11 on the right side and a second ridge R12 on the left side. Each of the uprights 23R, 23L, and 23C is composed of a ridger. That is, the three uprights are the first side cultivator 23R on the right side, the second side cultivator 23L on the left side, and the central cultivator 23C on the center. As shown in FIG. 3, the first side cultivator 23 </ b> R is provided on the right side (one side part behind the tractor 1) on the rear side of the rotary tiller 2. The second side cultivator 23L is provided on the left side on the rear side of the rotary tiller 2 (the other side on the rear side of the tractor 1). The central soil cultivator 23C is provided on the rear side (between the first side cultivator 23R and the second side cultivator 23L) in the center in the width direction of the rotary tiller 2.

  The first side cultivator 23R, the second side cultivator 23L, and the central cultivator 23C, when pulled by the tractor 1, cut a groove in the cultivated soil that is cultivated by the cultivator 18 and leveled by the rear cover 19B. . By cutting grooves in the cultivated soil with the first side cultivator 23R, the second side cultivator 23L, and the central cultivator 23C, ridges R11 and R12 are formed. That is, the first side ridger 23R forms the right side of the first ridge R11. The second side cultivator 23L forms the left side of the second basket R12. Further, the central earthing machine 23C forms the left side of the first ridge R11 and the right side of the second ridge R12. In other words, the central cultivator 23C cooperates with the first side cultivator 23R to form the first ridge R11 and cooperates with the second side cultivator 23L to form the second ridge R12.

As shown in FIG. 3, the machine casing 11 includes a left support stay 24 </ b> L, a right support stay 24 </ b> R, 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 transplanter 3 mounted behind the rotary tiller 2 includes a support frame 26 pivotally supported by support stays 24L and 24R, a left gauge ring (support ring) 27L, and a right gauge ring (support ring) 27R. A second height changing device 28 pivotally supported by the mast 25, a second support frame 232 (see FIG. 6) provided between the left swing arm 31L and the right swing arm 31R, 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 that set the height of the rotary tiller 2 (ground working machine). In other words, the gauge wheels 27 </ b> L and 27 </ b> R are members that set the tilling depth of the rotary tiller 2. The second height changing device 28 is a device that changes the setting of the gauge wheels 27L and 27R by swinging the support frame 26 up and down.

As shown in FIGS. 3, 5, and 6, the support frame 26 includes a front frame 29 that is pivotally supported by the support stays 24 </ b> L and 24 </ b> R, and a rear frame 30 that is 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 supporting member 224L, and the right supporting 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 support plate 201L. The swing arm 31L protrudes 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 into the pivot support plate 201RL. The swing arm 31R protrudes rearward from the support arm 13R. The connecting rod 32U connects the rear ends of the swing arm 31L and the swing arm 31R. The upper part of the left vertical frame member 33L is fixed to the left part of the swing arm 31L, and extends downward from the left part of the swing arm 31L (see FIG. 5). The upper part of the right vertical frame member 33R is fixed to the right part of the swing arm 31R, and extends downward from the right part of the swing arm 31R. The left connecting rod 202L has a front portion 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 right connecting rod 202R has a front portion 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 is swingable up and down around the pivotal portion of the front end of the swing arm 31L and the swing arm 31R.
As shown in FIG. 6, the support members 224L and 224R respectively support chairs 231L and 231R for workers (for the workers to sit). Hereinafter, for convenience, the chairs 231L and 231R are 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 includes a support rod 225L that is fixed to a midway 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 includes a support rod 225R that is fixed to a midway 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 a first seedling supply device 72A described later. Specifically, the first front chair 231R is located on the front extension line L1 of the center line in the width direction of the path P1 of the first seedling supply device 72A described later. Thereby, the operator H can sit facing the 1st seedling supply apparatus 72A side (back). The second front chair 231L is located in front of a second seedling supply device 72B described later. Specifically, the second front chair 231L is located on the front extension line L2 of the center line in the width direction of the path P1 of the second seedling supply device 72B described later. Thereby, the operator H can sit facing the 2nd seedling supply apparatus 72B side (back).

  As shown in FIGS. 3 and 5, the rear frame 30 is connected to the rear portions of the connecting rods 202 </ b> L and 202 </ b> R 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. A right wheel frame 36R, a left front member 204L, a right front member 204R, a left rear member 205L, a right rear member 205R, a left connecting rod 206L, and a right connecting rod 206R. Have Horizontal frame member 34C, horizontal frame member 34L, horizontal frame member 34R, vertical frame member 35L, vertical frame member 35R, wheel frame 36L, wheel frame 36R, front member 204L, front member 204R, rear member 205L, rear member 205R, connection The collar 206L and the connection collar 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 coupled 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 part of the horizontal frame member 34C and protrudes leftward from the left end of the horizontal frame member 34C. The horizontal frame member 34R is fixed to the right part of the horizontal frame member 34C and protrudes rightward from the right end of the horizontal frame member 34C. The front member 204L has a front portion 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 member 204R has a front portion 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 part of the horizontal frame member 34C, and extends downward from the left part. The upper end of the vertical frame member 35R is fixed to the right part of the horizontal frame member 34C, and extends downward from the right part.

  As shown in FIGS. 3 and 5, the wheel frame 36L includes 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 leftward from the lower part of the vertical frame member 35L. The rear member 38L has a front end fixed to the left end of the front member 37L and extends rearward from the left end. The wheel frame 36R includes 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 rightward from the lower part of the vertical frame member 35R. The rear member 38R has a front end 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 cultivator 23L is disposed in front of the gauge wheel 27L. A first side ridger 23R is disposed in front of the gauge wheel 27R. The first side ridger 23R is attached to the lower part of the vertical frame member 35R so that the height can be adjusted. The second side cultivator 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 in the front-rear direction of the wheel frame 36L (rear member 38L), and the upper part is fixed to the middle part in the front-rear direction of the front member 204L. Thereby, 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. Thereby, the connecting rod 206R connects the wheel frame 36R and the front member 204R.

  The rear member 205L has a front end pivotally supported at 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. Thereby, the rear member 205L is rotatable with respect to the front member 204L with the horizontal shaft member 207L as a fulcrum (center). The rear member 205R has a front end pivotally supported at the rear end of the front member 204R, and extends rearward from the rear end of the front member 204R. The rear member 205R is rotatable with respect to the front member 204R by the same structure as the rear member 205L.

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

A column 41L is fixed to the cylindrical body 209L. The support column 41L extends upward from the cylindrical body 209L. A column 41R is fixed to the cylindrical body 209R. The support column 41R extends upward from the cylindrical body 209R. Chairs 42L and 42R for workers (for the operator to sit) are provided at the upper ends of the columns 41L and 41R, respectively.
Hereinafter, for convenience, the chairs 42L and 42R are referred to as side chairs. 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) in the width direction K2 of the first seedling supply device 72A, which will be described later, and the operator H is on the first seedling supply device 72A side. You can sit facing (left). The second side chair 42L is located on the other side (left side) in the width direction K2 of the second seedling supply device 72B described later, and the worker H faces the second seedling supply device 72B (right side). I can sit down.

Further, the first side chair 42R is arranged on the side (right side) opposite to the second planting device 68B described later, which is the side of the first planting device 68A described later.
The second side chair 42L is disposed on the side of the second planting device 68B and on the side opposite to the first planting device 68A (left side).
The protruding members 40L and 40R and the cylinders 209L and 209R described above constitute a position adjustment mechanism that can adjust the position in the width direction K2 of the first side chair 42R and the second side chair 42L.

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

  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 also fixed to the front portion of the rear member 205R and extends downward. The tip of the biasing 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 a biasing force in the extending direction. The damper 215 assists the operation of changing the posture of the second side chair 42L. The base end of the damper 215 is attached to the connecting rod 206L. The biasing 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 operation of this damper 215 is the same for the first side chair 42R.

  When the ground work machine (rotary cultivator) 2 is raised while the operator 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 operator 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 maintained substantially horizontal. Rotates with respect to the front member 204L using 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 portion of the wheel stay 39R is also fixed at a position near 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 operator 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 an operation unit 233 described later. The second support frame 232 includes a left support frame member 232L, a right support frame member 232R, a first connection frame member 232A, and a second connection frame member 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 part of the mast 25 and extends rearward. The support frame member 232R has a front end fixed to the right part of the mast 25 and extends rearward. The first connection frame member 232A extends in the width direction K2, and connects the midway part of the support frame material 232L in the front-rear direction and the midway part of the support frame material 232R in the front-rear direction. The second connection frame member 232B extends in the width direction K2, and connects the rear end of the support frame member 232L and the rear end of the support frame member 232R.

  As shown in FIG. 6, the operation unit 233 includes a case 233A, an operation member 233B, and a control device (not shown) accommodated in the case 233A. The rear part of the case 233A is in contact with the front part of a bracket body 60 described later. The operation 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 seedling planting. In the present embodiment, the operation member 233B is a rotary knob, and a plurality (four) of the operation member 233B are provided side by side in the front-rear direction. The operation member 233B is, for example, a knob for setting a change between stocks, a knob for setting a seedling emptying, or the like. However, the number, type, and arrangement of the operation member 233B can be changed as appropriate. The control device controls settings related to seedling planting 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. A 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 respectively provided on the left side and the right side across the center in the width direction K2. The left mounting plate 236 is fixed to the rear portion of the support frame member 232L, and extends downward from the rear portion. The right mounting plate 236 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. The right connecting rod 237 is fixed to the right rear end of the front rod 235 and the right lower end of the right mounting plate 236 by bolts.

  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 tube 43 from the lower end of the second cover tube 43, and the upper end portion is screwed into the second screw rod 44. A lower end portion 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 relative to the second screw rod 44. As the second movable rod 45 advances, the second movable rod 45 protrudes from the second cover cylinder 43. When the second movable rod 45 moves backward, 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 height of the gauge wheels 27L and 27R can be changed. By changing the height of the gauge wheels 27L and 27R, the height of the ground work machine 2 (the height of the tilling unit 18) is 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 the change in the height of the transplantation 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 height of the transplantation frames 69A and 69B by the first height changing device 50. Further, the height of the transplantation 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 transplanter 3 includes a plurality of mounting frames 48L and 48R, a tool bar 49, a first height changing device (connecting member) 50, and a plurality of transplant 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 that is a frame different from the first mounting frame 48L. The plurality of transplantation units 51A and 51B include a first transplantation unit 51A and a second transplantation unit 51B. The toolbar 49 is attached across the first attachment frame 48L and the second attachment frame 48R. The first transplantation unit 51A and the second transplantation unit 51B are attached to the tool bar 49. The tool bar 49 is connected to the second support frame 232 by the first height changing device 50.

  The first attachment frame 48L is disposed on the left part of the transplanter 3 and extends rearward from the left part of the rotary tiller 2. The first attachment frame 48 </ b> L includes 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 portion of the transmission case 14, and is pivotally supported so as to be rotatable about a horizontal axis (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 part of the second member 53 is connected to the rear end of the first member 52 and extends downward from the rear end. The midway part in the vertical direction of the second member 53 and the midway part in the vertical direction 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 through the upper side of the horizontal frame member 34C and extends to the rear side of the horizontal frame member 34C.

  The second attachment frame 48 </ b> R is disposed on the right part of the transplanter 3 and extends rearward from the right part of the rotary tiller 2. The second attachment frame 48 </ b> R includes 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 portion of the side frame 15, and is pivotally supported around the horizontal axis in the attached state. The fourth member 54 extends rearward from the upper part of the side frame 15. The upper portion of the fifth member 55 is connected to the rear end of the fourth member 54 and extends downward from the rear end. The midway part in the vertical direction of the fifth member 55 and the midway part in the vertical direction of the vertical frame member 33R are connected by a connecting member 297R. The sixth member 240 has a front end connected to the lower end of the fifth member 55 and extends rearward from the lower end. The sixth member 240 extends to the rear of the horizontal frame member 34C through the upper side of the horizontal frame member 34C.

  The tool bar 49 is formed of a square pipe and is attached between the rear part of the first attachment frame 48L and the rear part of the second attachment frame 48R. Specifically, the tool bar 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 tool bar 49 is detachably attached to the rear end of the third member 239. The other end side (right side) of the tool bar 49 is detachably attached to the rear end of the sixth member 240.

  The first height changing device 50 is a device (member) that changes the height of the transplantation frames 69A and 69B, which will be described later, with respect to the ground work machine 2 by changing the height of the tool bar 49. In other words, the 1st height change apparatus 50 is an apparatus (member) which changes the planting depth of the planting apparatus mentioned later by changing the height of several transplant unit 51A, 51B. The planting device is a device for planting seedlings in a cocoon (field).

As shown in FIGS. 6 and 8, the first height changing device 50 includes a support bracket 56, an extendable rod 57, and a first operation handle 58.
The support bracket 56 includes a bracket body 60, mounting plates 59L, 59R, and 59U, mounting stays 61L and 61R, and support stays 238L and 238R. The lower end of the bracket body 60 is connected to the middle portion in the width direction K2 of the second connection frame member 232B, and extends upward from the lower end. The front part of the mounting plate 59L is fixed to the left part of the upper end of the bracket body 60. The front part of the mounting plate 59R is fixed to the right part of the upper end of the bracket body 60. The lower surface of the attachment plate 59U is fixed to the upper end of the bracket body 60, the upper end of the attachment plate 59L, and the upper end of the attachment plate 59R. The front portion of the mounting stay 61L is fixed to the mounting plate 59L with a bolt. The front portion of the mounting stay 61R is fixed to the mounting plate 59R with a bolt. The front end of the support stay 238L is fixed to the left part 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 in the vertical direction. The front end of the support stay 238R is fixed to the right part of the mast 25. The rear end of the support stay 238R is fixed to the right surface of the bracket 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 includes a first cover cylinder 63, a first screw rod 64, and a first movable rod 65. The upper part of the first cover cylinder 63 is disposed between the attachment stay 61L and the attachment stay 61R. 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 about the horizontal axis. The first screw rod 64 is housed in 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 tube 63 from the lower end of the first cover tube 63 and is screwed into the first screw rod 64. The lower end of the first movable rod 65 is inserted between the attachment piece 66L and the attachment piece 66R. The lower end of the first movable rod 65 is pivotally supported on the mounting pieces 66L and 66R by a support pin 67 that passes through the first movable rod 65 and the mounting pieces 66L and 66R. The attachment piece 66L and the attachment piece 66R are fixed around the center of the upper surface of the tool bar 49 in the width direction K2.

  The first operation handle 58 is pivotally supported on the upper portion of the first screw rod 64 via a horizontal shaft 58a. When the first operation handle 58 is used, the first operation handle 58 is rotated upward about the horizontal axis 58a as a fulcrum (center) as shown by an imaginary line (two-dot chain line) in FIG. Thereby, the first operation handle 58 can be rotated around the axis of the first screw rod 64. Since the first operation handle 58 is in the position indicated by the solid line in FIG. 16 when not in use, it does not get in the way. Similarly, the second operation handle 46 is rotated upward from the position indicated by 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 relative to the first screw rod 64. As the first movable rod 65 moves forward, the first movable rod 65 protrudes from the first cover cylinder 63. When the first movable rod 65 moves backward, 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 tool bar 49 moves up and down. When the tool bar 49 moves up and down, the first transplantation unit 51A and the second transplantation unit 51B move up and down. When the first transplant unit 51A and the second transplant unit 51B move 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 51 </ b> A is disposed on the right side of the transplanter 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 cover rings 74A. The first transplant frame 69A is detachably attached to the right part of the tool bar 49. The first planting device 68A, the first seedling supply device 72A, and the plurality of covering rings 74A are provided on the first transplanting frame 69A.

  The second transplantation unit 51B is a transplantation unit that is provided side by side in the width direction K2 with respect to the first transplantation unit 51A, and is disposed on the left side of the transplanter 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 cover rings 74B. The second transplant frame 69B is detachably attached to the left part of the tool bar 49. The second planting device 68B, the second seedling supply device 72A, and the plurality of covering rings 74B are provided on the second transplanting frame 69B.

The transplanter frame 75 is configured by the first mounting frame 48L, the second mounting frame 48R, the tool bar 49, the first transplanting frame 69A, and the second transplanting frame 69B. The transplanter frame 75 is attached to the rotary tiller 2 (ground work machine) so as to be movable up and down.
Next, the transplant frames 69A and 69B will be described. The transplant frames 69 </ b> A and 69 </ b> B are provided behind the ground work machine 2. First, the first transplant frame 69A that is the transplant frame of the first transplant unit 51A will be described.

As shown in FIGS. 10 to 12, the first transplant frame 69 </ b> A has a frame attachment portion (attachment portion) 76, a main frame 77, and a planting frame 78.
The frame attachment part 76 is a part attached to the tool bar 49, and includes an attachment plate 79 and a plurality of attachments 80L and 80R. In this embodiment, there are two fixtures (the left first fixture 80L and the right second fixture 80R), but additional fixtures are provided between the first fixture 80L and the second fixture 80R. It may be provided. In the present embodiment, the mounting plate 79 has a substantially rectangular shape, and is arranged with the long side directed in the width direction K2 and the short side directed in the vertical direction. The front surface of the mounting plate 79 contacts the rear surface of the tool bar 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 contacts the upper surface of the tool bar 49. The lower bar portion 80 </ b> D extends in the front-rear direction and contacts the lower surface of the tool bar 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 bar portion 80 </ b> F extends in the vertical direction and contacts the front surface of the tool bar 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 pass through a through hole formed in the attachment plate 79, and a screw portion at the rear end protrudes rearward of the attachment plate 79. The fixture 80 is attached to the tool bar 49 by screwing the nuts 100 into the threaded portions of the upper rod portion 80U and the lower rod portion 80D. As a result, the frame attachment portion 76 is attached to the tool bar 49.

  A 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 The cross member 98 includes 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 a center portion in the width direction K2 of the planting frame 78 (an intermediate point between the two fixtures 80). The central member 247 is disposed above the tool bar 49 and extends in a direction orthogonal to the tool bar 49 (front-rear direction).
The first lateral member 97 is disposed 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 near the center in the extending direction (width direction K2) of the first lateral member 97, and extends downward from the lower surface. Two fixing plates 249 are provided at an interval in the width direction K2. A front portion of the central member 247 is fixed between the two fixing plates 249.

The second transverse member 98 is disposed behind the first transverse member 97 and in parallel with the first transverse member 97. The second lateral member 98 is disposed 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 part of the lower surface of the first horizontal member 97 and extends downward from the left part. The lower part of the first vertical member 92 is fixed to the left part of the mounting plate 79. The second vertical member 93 has an upper end fixed to the right part of the lower surface of the first horizontal member 97 and extends downward from the right part. The lower part of the second vertical member 93 is fixed to the right part of the mounting plate 79. The third vertical member 94 is disposed 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 in the width direction K2 of the lower surface of the first horizontal member 97, and extends downward from the central portion.

  The fourth vertical member 95 is disposed behind the second vertical member 93. The upper end of the fourth vertical member 95 is fixed to the right part of the lower surface of the second horizontal member 98 and extends downward from the right part. The fifth vertical member 96 is disposed behind the third vertical member 94 and to the left of the fourth vertical member 95. An upper end of the fifth vertical member 96 is fixed to the central portion in the width direction K2 of the lower surface of the second horizontal member 98, 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 covering rings 74A are attached. The main frame 77 includes a first frame material 81 to an eleventh frame material 91. The first frame material 81 to the eleventh 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 horizontal 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 horizontal member 97 and extends rearward from the right end. A support member 250 is provided in a downward projecting manner in the middle part of the second frame member 82 in the front-rear direction. A support member 251 is provided on the middle part of the third frame member 83 in a downward projecting manner. 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 disposed 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 disposed 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 seventh frame member 87 has an upper end fixed to the central member 247 and a lower end 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 near the center in the extending direction (width direction K2) of the eighth frame member 88, and extends downward from the lower surface. Two fixing plates 251 are provided at an interval in the width direction K2. A rear portion of the central member 247 is fixed between the two fixing plates 251.

  The ninth frame member 89 has an upper end fixed at a position near the rear portion of the lower surface of the second frame member 82 and extends downward from the position. The tenth frame member 90 has an upper end fixed at a position near the rear end of the lower surface of the central member 247 and extends downward from the position. The eleventh frame member 91 has an upper end 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 portion 73AL and a right frame support portion 73AR.
The frame support portion 73AL extends in the width direction K2, and is attached across the seventh frame material 87 and the ninth frame material 89. The right end of the frame support portion 73AL is fixed to the seventh frame material 87. A midway portion in the width direction K <b> 2 of the frame support portion 73 </ b> AL is fixed to the ninth frame material 89. The left end of the frame support portion 73AL protrudes leftward from the ninth frame material 89. A left cover ring 74AL is attached to the frame support portion 73AL through a cover frame 400AL.

  The frame support portion 73AR extends in the width direction K2 behind the frame support portion 73AL, and is attached across the tenth frame material 90 and the eleventh frame material 91. The left end of the frame support portion 73AR is fixed to the tenth frame member 90. A 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 protrudes 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 that is the transplant frame of the second transplant unit 51B will be described.
Similarly to the first transplant frame 69A, the second transplant frame 69B also includes a frame attachment portion (attachment portion) 76, a main frame 77, and a planting frame 78. Since the structure of these frame attaching part 76, the main frame 77, and the planting frame 78 is the same as the structure mentioned above, description is abbreviate | omitted.

A second seedling supply device 72B and a plurality of covering rings 74B are attached to the main frame 77 of the second transplant frame 69B. A second planting device 68B is attached to the planting frame 78 of the second transplant frame 69B.
Next, the power transmission system of the first transplantation unit 51A and the second transplantation 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 member 83. The second bearing 102 is attached to the central member 247. The right end side of the first transmission shaft 70 </ b> A projects rightward (outward in the width direction) from the second bearing 102. The left end side of the first transmission shaft 70 </ b> A protrudes leftward (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, 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 member 82. The left end side of the second transmission shaft 70 </ b> B protrudes leftward (outward in the width direction) from the third bearing 103. The right end side of the second transmission shaft 70B protrudes inward in the width direction from the fourth bearing 104 (right side).

  As shown in FIG. 9A, the left end side of the first transmission shaft 70 </ b> A and the right end side of the second transmission shaft 70 </ b> B face each other and are detachably connected by a connection pipe (connection member) 105. 70 A of 1st transmission shafts, the 2nd transmission shaft 70B, and the connection pipe 105 comprise the planting drive shaft 108 which the motive power from the electric motor (power source) 71 is transmitted and drives the planting apparatus 68A, 68B. Yes.

  As shown in FIGS. 9A, 13, and 14, the electric motor 71 is a power source of the transplanter 3 and is a power source provided separately from the power source of the tractor 1 (a prime mover E <b> 1 described later). The electric motor 71 drives devices such as a planting device (a device for planting seedlings in the cocoon) and a seedling supply device (a device for supplying seedlings to the planting device) equipped in the transplanter 3. The electric motor 71 is attached to a mounting plate 106A attached to the front part of the first vertical member 92 and the third vertical member 94 in the first transplanting 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 tube 254A is supported by a central member 247 (hereinafter referred to as a central member 247A) in the first transplantation unit 51A. The left end side of the support tube 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 transplantation unit 51B. The third output shaft 261 is supported by the 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 tube 254B is supported by a central member 247 (hereinafter referred to as a central member 247B) in the second transplantation unit 51B. The left end side of the support tube 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 disposed on the right side of the third sprocket 116. The fourth sprocket 117 is attached to the attachment plate 106A via a bracket 258A. The rotating shaft of the fourth sprocket 117 and the second output shaft 253 are disposed in a direction orthogonal to each other 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 transplantation unit 51A is provided with a support member 256A and a support member 257A protruding downward. The central member 247B in the second transplant unit 51B is provided with a support member 256B and a support member 257B protruding downward. The support members 256 </ b> A and 256 </ b> B are provided between the third vertical member 94 and the fifth vertical member 96. The support members 257 </ b> A and 257 </ b> B are provided behind the fifth vertical member 96.

  As shown in FIGS. 9A and 9B, the fifth sprocket 118 is provided on the support member 256A. A sixth sprocket 119 is provided on the support member 257A. 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. A thirteenth sprocket 126 is arranged on the right side of the twelfth sprocket 125. The thirteenth sprocket 126 is attached to the attachment plate 106B via a bracket 258B. The rotation shaft of the thirteenth sprocket 126 and the third output shaft 261 are arranged in a direction orthogonal to each other 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 transplantation unit 51B, the support member 256B is provided with a fifteenth sprocket 264. A sixteenth sprocket 265 is provided on the support member 257B. A sixth bearing 262 is disposed 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 seventeenth sprocket 266 and an eighteenth sprocket 267.

A 19th sprocket 268, a 20th sprocket 269, and a 21st sprocket 270 are provided on the second transmission shaft 70B.
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. The power of the second output shaft 253 is transmitted to the rotation 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. The power of the first transmission shaft 70A is transmitted from the ninth sprocket 122 to the twenty-second sprocket 271 (see FIG. 19) via the fourth chain 130. The power of the third transmission shaft 260 is transmitted from the eleventh sprocket 124 to the twenty-third sprocket 274 (see FIG. 19) via the eighth chain 273. Further, the power of the first transmission shaft 70 </ b> A is transmitted to the second transmission shaft 70 </ b> B via the connection pipe 105.

  The power of the second transmission shaft 70B is transmitted from the nineteenth sprocket 268 to the twelfth sprocket 125 via the fifth chain 132 and the fifteenth sprocket 264 (see FIG. 9A). The nineteenth sprocket 268, the fifth chain 132, the fifteenth sprocket 264, and the twelfth sprocket 125 constitute a power takeout portion 109 that extracts power from the midway portion of the planting drive shaft 108.

  The power transmitted to the twelfth sprocket 125 is transmitted from the third output shaft 261 to the thirteenth sprocket 126 via the gear mechanism 259B. The power of the second transmission shaft 70 </ b> B is transmitted from the twentieth sprocket 269 to the seventeenth sprocket 266 via the sixth chain 134. The power transmitted to the seventeenth sprocket 266 is transmitted to the eighteenth sprocket 267 via the fourth 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 seventh chain 136. 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 ninth chain 275.

Next, the planting devices 68A and 68B will be described. First, the first planting device 68A that 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 planting mechanisms 68AL and 68AR (two in the present embodiment). 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 transplantation frames 69A and 69B in parallel with the first planting mechanism AL and at a position different from the first planting mechanism AL in the front-rear direction. In the present embodiment, the second planting mechanism 68AR is disposed behind the first planting mechanism 68AL, but the second planting mechanism 68AR may be disposed ahead of the first planting mechanism 68AL. Good.

  As shown in FIGS. 10 and 15, the first planting mechanism 68AL includes a planting tool 137 (one planting tool), a support body 138, and an elevating device 139. Similarly to the first planting mechanism 68AL, the second planting mechanism 68AR includes a planting tool 137 (one planting tool), a support body 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 lifting device 139 in the first planting mechanism 68AL may be referred to as a first lifting device 139AL, and the lifting device 139 in the second planting mechanism 68AR may be referred to as a second lifting device 139AR.

  The first planting device 68A (first planting tool 137AL, second planting tool 137AR) is a device for planting seedlings in a farm field, and in the present embodiment, seedlings are planted on the cocoon R1 (first cocoon R11). . The planting tool 137 has a beak shape with the tip facing downward, and has a front component 140 and a rear component 141. The planting tool 137 is openable and closable when the front component 140 and the rear component 141 are separated and approached in the front-rear direction K1. In addition, the planting tool 137 can be supplied with seedlings from above in a closed state and can accommodate seedlings therein. In addition, the planting tool 137 can release the seedling by dropping it downward.

  As shown in FIGS. 12 and 15, the support body 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 at the front. The front body of the support body 138 in the second planting mechanism 68AR is fixed to the third coupling member 243 and the fourth coupling 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 body 138 in the second planting mechanism 68AR is located behind the support body 138 in the first planting mechanism 68AL. Thereby, 2nd planting mechanism 68AR is located back rather than 1st planting mechanism 68AL. As shown in FIG. 10, the magnitude of the longitudinal displacement between the first planting mechanism 68AL and the second planting mechanism 68AR is such that the first planting tool 137AL and the second planting tool 137AR are at bottom dead center. It is set so that it does not overlap when viewed from the side. The mounting position of each support body 138 can be changed with respect to the planting frame 78 in the width direction K2. By changing the mounting position of the support body 138, it is possible to change the interval between the planted seedlings (interval in the width direction K2 of the planted seedlings).

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

As shown in FIGS. 10 and 15, in the first transplantation unit 51A, the 22nd sprocket 271 is supported by the support shaft 142 on the support body 138 of the first planting mechanism 68AL. In addition, the 23rd sprocket 274 is supported by the support shaft 142 on the support body 138 of the second planting mechanism 68AR.
The lifting device 139 (first lifting device 139AL, second lifting device 139AR) is a device that supports the planting tool 137 and moves the planting tool 137 up and down (reciprocates up and down). Specifically, the first lifting device 139AL is a device that lifts and lowers the first planting tool 137AL, and the second lifting device 139AR is a device that lifts and lowers the second planting tool 137AR. The lifting device 139 is attached to the support 138. The lifting device 139 includes a first case 143, a second case 144, and a mounting member 145. The first case 143 is rotatably supported by the support body 138 via the support shaft 142. The second case 144 is rotatably supported on the free end side of the first case 143. The attachment member 145 is supported by the second case 144. A planting tool 137 is supported on the mounting member 145. The attachment member 145 is provided with a seedling guide 146 located above the planting tool 137. The seedling guide 146 is formed in a cylindrical shape that is tapered toward the bottom, and guides the seedling supplied to the planting tool 137 from above to the planting tool 137. The attachment member 145 is biased 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 so that the second case 144 rotates in the opposite direction to the first case 143 in conjunction with the rotation of the first case 143. A power transmission mechanism is provided inside. In addition, when the first case 143 and the second case 144 are rotated, the mounting member 145 moves in parallel up and down, and the planting tool 137 moves up and down.

FIG. 16 shows one cycle of operation of the planting tool 137. That is, the raising / lowering operation until the planting tool 137 returns to the top dead center position G1 through the lowered position (bottom dead center position) G2 from the raised position (top dead center position) G1 is shown.
A seedling is 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 seedling is held inside the planting tool 137. Thereafter, the planting tool 137 descends while holding the seedling, and the lower part of the planting tool 137 enters the ridge R1 (farm field). When the planting tool 137 enters the ridge R1, the planting tool 137 opens to form a planting hole in the cocoon R1, and discharges the seedling N1 into the planting hole (plants the seedling).

The seedling N1 is planted in the longitudinal direction of the cocoon R1 by repeatedly performing this lifting and lowering operation while traveling.
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. Thus, two transplanted seedlings are planted in a staggered manner on the cocoon by one transplanting unit (one of the seedlings adjacent in the width direction K2 is planted with a position shifted one after the other).

  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 locations 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, it is possible to plant seedlings with a narrow inter-strip distance. Further, since the width (length in the width direction K2) of the transplantation 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 is compact in the width direction K2. It becomes possible to comprise.

  In the present embodiment, the left and right planting tools 137 (the first planting tool 137AL and the second planting tool 137AR) are lifted and lowered simultaneously. When the planting tool 137 stops, the left and right planting tools 137 stop at the top dead center position G1. In order to perform inter-strain control, the planting tool 137 must be stopped. However, if the planting tool 137 is stopped at an intermediate position in the vertical movement range, a problem may occur. For example, when planting seedlings of hard vegetables such as tomato and pepper, if the planting tool 137 stops at an intermediate position in the vertical movement range, the planting tool 137 hits the planted seedling stem and the seedling falls down. There is a fear. In the present embodiment, staggered planting is realized by shifting the first planting tool 137AL and the second planting tool 137AR back and forth, and raising and lowering the first planting tool 137AL and the second planting tool 137AR simultaneously. 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. Thereby, the fall of the seedling can be prevented.

A mechanism (hereinafter referred to as a planting tool stop mechanism 285) for stopping the first planting tool 137AL and the second planting tool 137AR at the top dead center position G1 will be described.
As shown in FIGS. 13 and 14, the planting tool stopping mechanism 285 includes a mounting member 286, a support rod 287, nuts 288 U and 288 D, a swing member 289, a support shaft 290, a roller 291, a spring 292, and a cam 293. doing. The attachment member 286 is fixed near the front end of the central member 247A. A through hole is formed in the attachment member 286, and a support rod 287 is inserted through the through hole in the vertical direction. The support rod 287 has a threaded 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 with 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 relative to the threaded portion 287a and changing the vertical position of the support rod 287 with respect to the attachment member 286. The biasing 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 258 </ b> A via the support shaft 290. The swing member 289 can swing up and down with the support shaft 290 as a fulcrum (center). A locking hole 289 a 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 of the spring 292 is locked in the locking hole 287 b of the support rod 287, and the other end is locked in the locking hole 289 a 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 periphery. The swing member 289 is given a force (see arrow A2 in FIG. 13) that swings upward about the support shaft 290 as a fulcrum (center) by the biasing force of the spring 292. By this force, the roller 291 is pressed against the outer periphery of the cam 293.

  When the electric motor 71 stops, the roller 291 is pressed against the outer periphery 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 the roller 291 (in the direction of arrow C1 in FIG. 13). The roller 291 and the cam 293 rotate in opposite directions to move the roller 291 along the outer periphery of the cam 293. After moving along the outer periphery of the cam 293, the roller 291 is fitted into the recess 293a and stops moving. When the movement of the roller 291 stops, the rotation of the cam 293 stops. As a result, the rotation of the second output shaft 253 stops, and the movement of the first planting tool 137AL stops. Therefore, the first planting can be performed by appropriately setting the relationship between the position of the recess 293a (the position on the outer periphery of the cam 293) and the vertical positions of the first planting tool 137AL and the second planting tool 137AR. The tool 137AL and the second planting tool 137AR can be stopped at the top dead center position G1.

  As shown in FIG. 13, the first planting device 68A includes a lifting assist mechanism 294 that assists the lifting operation when the first planting tool 137AL and the second planting tool 137AR are moved up and down. . The ascending auxiliary mechanism 294 includes a rotating plate 295 and a spring 296. The rotating 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 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 with the rotation of the first transmission shaft 70A. Specifically, the spring 296 extends when the first planting tool 137AL and the second planting tool 137AR descend, and shortens when the first planting tool 137AL and the second planting tool 137AR rise. . Therefore, when the first planting tool 137AL and the second planting tool 137AR are lowered, the raising operation is assisted by the biasing force (pulling force) of the spring 296. As a result, the first planting tool 137AL and the second planting tool 137AR are subjected to a force (gravity) that assists the descending operation by its own weight when descending, and the force assisting the ascending operation by the biasing force of the spring 296 when ascending Therefore, the raising / lowering operation is performed smoothly.

Next, the 2nd planting apparatus 68B which is a planting apparatus of the 2nd transplant unit 51B is demonstrated.
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 the second planting mechanism 68BR may be arranged ahead of the first planting mechanism 68BL. Good.

  Similar to the first planting mechanism 68AL, the first planting mechanism 68BL includes a planting tool 137 (another planting tool), a support 138, and an elevating device 139. Similar to the second planting mechanism 68AR, the second planting mechanism 68BR includes a planting tool 137 (another planting tool), a support body 138, and a lifting 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 lifting device 139 in the first planting mechanism 68BL may be referred to as a first lifting device 139BL, and the lifting device 139 in the second planting mechanism 68BR may be referred to as a second lifting device 139BR.

The second planting device 68B (first planting tool 137BL, second planting tool 137BR) is a device for planting seedlings in a farm field. In the present embodiment, the seedlings are planted on the cocoon R1 (second cocoon R12). .
Since these planting tools 137, the support body 138, and the raising / lowering apparatus 139 are the same as that of the structure mentioned above, description is abbreviate | omitted. Similarly to the first planting device 68A, the second planting device 68B also includes a planting tool stopping mechanism 285 and a lifting assist mechanism 294. The planting tool stopping mechanism 285 and the lift assist mechanism 294 are the same as those described above, and thus the description thereof is omitted.

As shown in FIGS. 10 and 15, in the second transplantation unit 51 </ b> B, the 24th sprocket 277 is supported by the support shaft 142 on the support body 138 of the first planting mechanism 68 </ b> BL. The 24th sprocket 276 is supported by the support shaft 142 on the support body 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 disposed above the first planting device 68A. The first seedling supply device 72A drops and supplies the seedling to a planting tool 137 (first planting device 68A) located below. The first seedling supply device 72A is supported above the second frame member 82, the third frame member 83, the eighth frame member 88, and the first lateral 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 and 148 into which seedlings are introduced. The multiple supply cups 147 and 148 include multiple first supply cups 147 and multiple second supply cups 148. The 1st supply cup 147 and the 2nd supply cup 148 are arrange | positioned along the loop-shaped path | route P1 long back and forth. Specifically, the first supply cup 147 and the second supply cup 148 are arranged in a loop so as to exhibit a long oval shape in the front-rear direction K1 in plan view. 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 the arrow Y1 by the transfer mechanism 149 along the loop path (oval arrangement path) P1 that is long in the front-rear direction. The transfer mechanism 149 includes a first rotating body 150, a second rotating body 151, and a cord body 152. The 1st rotary body 150 and the 2nd rotary body 151 are comprised by the sprocket. The cable body 152 is configured by an endless chain. The first rotator 150 and the second rotator 151 are supported by a frame that supports the first seedling supply device 72A so as to be rotatable about a vertical axis (a vertical axis). The first rotating body 150 is located at the front part of the transfer mechanism 149, and the second rotating body 151 is disposed behind the first rotating body 150. The cable body 152 is stretched 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 cable body 152 on the outer peripheral side of the cable body 152.

A drive sprocket 153 is provided below the first rotating body 150. The drive sprocket 153 is connected to the first rotating body 150 and the third drive shaft 154 so as to be integrally rotatable. 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 thirteenth sprocket 126 to the drive sprocket 153 via the ninth chain 155.

  As shown in FIG. 18, the first supply cup 147 includes a storage portion 156, an attachment portion 157, and a lid 158. Similarly, the second supply cup 148 includes a storage portion 160, a mounting portion 161, and a lid 162. The accommodating portions 156 and 160 are portions that accommodate the seedlings that have been thrown in, and are configured by a cylindrical body having an upper and lower opening shape. The attachment parts 157 and 161 are parts attached to the cord body 152. The lids 158 and 162 are members that close the bottoms of the accommodating portions 156 and 160. The lids 158 and 162 are pivotally supported by hinges 159 at the lower portions of the accommodating portions 156 and 160 so that the lower end openings of the accommodating portions 156 and 160 can be opened and closed. When the lids 158 and 162 are closed, the seedlings can be held in the accommodating portions 156 and 160, and when the lids 158 and 162 are opened, the 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 engagement portion 163. The lid 162 of the second supply cup 148 has a second engaging portion 164. The first engaging portion 163 protrudes to the inner peripheral side of the arrangement path (the cord body 152) of the supply cups 147 and 148. The second engaging portion 164 protrudes on the outer peripheral side of the arrangement path (the 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 sign X1 is a first opening position where the lid 158 of the first supply cup 147 opens (opening position on one side in the width direction of the first rotating body 150 and the second rotating body 151). 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 sign X2 is a second opening position where the lid 158 of the second supply cup 148 opens (opening position on the other side in the width direction of the first rotating body 150 and the second rotating body 151).

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

Further, the lid 158 of the first supply cup 147 is opened at the first open position X1, and the lid 164 of the second supply cup 148 is opened at the second open position X2. Further, as described above, the first planting mechanism 68AL and the second planting mechanism 68AR, which are displaced forward and backward, move up and down simultaneously. This realizes staggered planting.
The left planting tool 137 (first planting tool 137AL) of the planting device 68A is positioned below the first opening position X1. The right planting tool 137 (second planting tool 137AR) of the planting device 68A is positioned below the second opening position X2.

  72 A of 1st seedling supply apparatuses can set the open position of supply cups 147 and 148 to the width direction one side and the other side of the 1st rotary body 150 and the 2nd rotary body 151 (the 1st open position X1, the 1st open position) 2) a setting member 166 capable of setting the two open positions X2. The setting member 166 includes a plurality of restriction rods 167, 168, 169, 170. For convenience of explanation, the restriction rod 167 is the first restriction rod 167, the restriction rod 168 is the second restriction rod 168, the restriction rod 169 is the third restriction rod 169, and the restriction rod 170 is the fourth restriction rod. 170.

  The first restriction rod 167 contacts 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. Accordingly, the first restriction rod 167 restricts 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 restriction 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. Accordingly, the second restriction rod 168 restricts 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 restriction rod 169 is located on the left side of the first opening position X1. The third restriction rod 169 contacts the lower surface of the second engagement portion 164 of the lid 162 at the first open position X1. This restricts the opening of the lid 162 of the second supply cup 148 at the first open position X1. The fourth restriction rod 170 is located on the left side of the second opening position X2. The fourth restriction rod 170 contacts the lower surface of the first engagement portion 163 of the lid 158 at the second open position X2. This restricts 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 restriction rod 167, the left front end portion of the second restriction rod 168, and the third restriction rod 169 constitute a first setting portion 196 that sets the first opening position X1. The right rear end portion of the first restriction rod 167, the right front end portion of the second restriction rod 168 and the fourth restriction rod 170 constitute a second setting portion 197 for setting the second opening position X2.
In the first open position X1, the lid 158 of the first supply cup 147 is disengaged from the first restriction rod 167 and the second restriction rod 168, and the first engagement portion 163 is not supported by the third restriction 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 seedling discharged from the first supply cup 147 is supplied to the first planting tool 137AL. When the first supply cup 147 is positioned at the first open position X1, the second supply cup 148 is positioned at the second open position X2. In the second open position X2, the lid 162 of the second supply cup 148 is disengaged from the first restriction rod 167 and the second restriction rod 168, and the second engaging portion 164 is not supported by the fourth restriction rod 170. As a result, the lid 162 of the second supply cup 148 is opened. At this time, the second planting tool 137AR has moved to the top dead center position G1, and the seedling discharged from the second supply cup 148 is supplied to the second planting tool 137AR.

  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 restricted by the third restriction rod 169, and the lid 162 of the second supply cup 148 is not opened. At this time, the first planting tool 137AL below the first opening position X1 moves downward to plant seedlings in the cocoon. The first engagement portion 163 of the first supply cup 147 located at the second open position X2 is restricted by the fourth restriction 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 opening position X2 moves downward to plant seedlings in the cocoon.

Next, the 2nd seedling supply device 72B which is a seedling supply device of the 2nd transplant unit 51B is explained.
The second seedling supply device 72B is disposed above the second planting device 68B. The seedling is dropped and supplied to the planting tool 137 (second planting apparatus 68B) located below by the second seedling supply apparatus 72B. Similarly 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 lateral member 97 via a frame. Has been.

Since the configuration of the second seedling supply device 72B is the same as the configuration of the first seedling supply device 72A, description thereof is omitted.
The seedling supply 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 the first front chair 231R, the second front chair 231L, the first side chair 42R, This is performed by the worker H (see FIG. 7) seated on the second side chair 42L.

  The first front chair 231R is located in front of the first seedling supply device 72A (its 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 positioned on one side (outward in the width direction) of the first seedling supply device 72A (the cord body 152) in the width direction K2. The second side chair 42L is located on the other side in the width direction K2 (outward in the width direction) of the second seedling supply device 72B (the cord body 152). Thereby, seedlings can be supplied to the first seedling supply device 72A by an operator seated on the first front chair 231R and the first side chair 42R. In addition, seedlings can be supplied to the second seedling supply device 72B by an operator seated on the second front chair 231L and the second side chair 42L. Therefore, it becomes possible to supply seedlings to the first seedling supply device 72A and the second seedling supply device 72B by a plurality of persons, and the seedling supply operation can be performed efficiently.

  As shown in FIGS. 4 and 7, a front seedling platform 278 </ b> A and a side seedling for placing a seedling tray having a large number of seedlings supplied to the supply cups 147 and 148 are disposed above the first seedling supply device 72 </ b> A. A mounting base 279A is provided. The front seedling platform 278A and the side seedling platform 279A are attached to the frame of the first seedling feeder 72A. The front seedling platform 278A is provided above the front portion of the first seedling supply device 72A, and has a longer width direction K2 than the front-rear direction K1. The front seedling platform 278A is inclined so as to become lower from the rear toward the front. The lateral seedling placing stand 279A is provided above the rear part of the first seedling supply device 72A, and is formed longer in the front-rear direction K1 than in the width direction K2. The lateral seedling support 279A is inclined so as to become lower from the inner side in the width direction toward the outer side in the width direction.

As shown in FIGS. 2, 4, and 7, a front seedling platform 278 </ b> B and a side seedling platform 279 </ b> B are also provided above the second seedling supply device 72 </ b> B. The configurations of the front seedling platform 278B and the side seedling platform 279B are the same as those of the front seedling platform 278A and the side seedling platform 279A, and thus the description thereof is omitted.
As shown in FIGS. 2 and 7, a seedling holder 280 </ b> R is provided on one side (right side) of the ground work machine 2 in the width direction K <b> 2. A seedling holder 280L is provided on the other side (left side) in the width direction K2 of the ground work machine 2. The seedling holders 280L and 280R include a substrate 281, a support column 282, a support base 283, and a support shaft 284.

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

  A seedling tray having a large number of seedlings to be supplied to the supply cups 147 and 148 is placed on the support base 283 of the seedling placement units 280L and 280R. The seedling tray placed on the left seedling placement unit 280L is empty when the seedlings on the seedling trays 278B and 279B of the second seedling supply device 72B have been removed. It is exchanged for a seedling tray. The seedling tray placed on the right seedling placement unit 280R is empty when the seedlings on the seedling trays 278A and 279A of the first seedling supply device 72A are no longer seedlings. It is exchanged for a seedling tray.

  The first front chair 231R is disposed on the other side (left side) in the width direction K2 of the seedling holder 28R. The second front chair 231L is arranged on one side (right side) in the width direction K2 of the seedling holder 28L. Thereby, the operator seated on the first front chair 231R can easily perform the operation of taking out the seedling tray placed on the seedling placement portion 28R. In addition, the operator seated on the second front chair 231L can easily perform the operation of taking out the seedling tray placed on the seedling placement portion 28L.

Next, the cover rings 74A and 74B will be described.
First, the cover ring 74A of the first transplant unit 51A will be described. As shown in FIGS. 3 and 4, the cover ring 74A includes a left cover ring 74AL and a right cover ring 74AR.
Two left cover rings 74AL are provided behind the left planting mechanism 68AL in the first transplant 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. Two right covering rings 74AR are provided in the first transplanting unit 51A behind the right planting mechanism 68AR. 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 covering rings 74AL and 74AR rotate on the upper surface of the cocoon, so that the soil covers and covers the root portion of the seedling planted by the first planting device 68A, and also suppresses the root portion of the seedling.

  As shown in FIG. 12, the earth covering ring 74AL is attached to the frame support portion 73AL of the transplant 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 disposed at different positions in the front-rear direction K1. In the present embodiment, the cover ring 74AR is arranged behind the cover ring 74AL.

Next, the cover ring 74B of the second transplant unit 51B will be described. The cover ring 74B includes a left cover ring 74BL and a right cover ring 74BR.
In the second transplanting unit 51B, two left covering rings 74BL are provided behind the left planting mechanism 68BL. In the second transplanting unit 51B, two right cover rings 74BR are provided behind the right planting mechanism 68BL. The soil covering rings 74BL and 74BR rotate on the upper surface of the cocoon, lay the soil on the root part of the seedling planted by the second planting device 68B, cover the soil, and suppress the root part of the seedling.

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

  As shown in FIGS. 1 and 20, an irrigation tank (tank) T <b> 1 is mounted on the front portion of the tractor 1. The irrigation tank T1 is a tank that stores water to be irrigated by the seedling planted by the planting tool 137. Moreover, a tank is not limited to the irrigation tank T1 which stores water, For example, the tank which stores liquids, such as liquid fertilizer supplied to a seedling, may be sufficient. The irrigation tank T <b> 1 is a transplant-related body related to the transplanter 3. The transplant-related body may be any member or device related to the transplanter 3, and may be, for example, a fertilizer applicator that supplies fertilizer to the field.

  As shown in FIG. 20, the irrigation tank T <b> 1 is disposed in front of the tractor 1 and 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. A clutch housing 402 is connected to the rear part of the prime mover E1, and a transmission case 403 is connected to the rear part of the clutch housing 402. The differential case 404 may be formed integrally 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, and more specifically, a diesel engine. The prime mover E1 may be an electric motor or a hybrid type having a diesel engine and an electric motor. The prime mover E <b> 1 is located in front of the steering wheel 8 and is covered with a bonnet 405. A headlamp (not shown) is provided on the front side of the bonnet 405.

  As shown in FIGS. 20 and 22, the front axle frame 401 protrudes forward from the prime mover E <b> 1 and supports the front axle case that supports the front wheel 7 </ b> A in a swingable manner. The front axle frame 401 includes a frame side portion 406L disposed on the left side of the prime mover E1, and a frame side portion 406R disposed on the right side of the prime mover E1. The rear portions of the frame side portion 406L and the frame side portion 406R are 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 at a front portion and an appropriate place by a connecting member 406A (see FIG. 22). The front axle frame 401 may be a frame that is fixed to the lower part on the front side of the prime mover E1. A weight bracket 407 to which a weight W1 can be attached is provided at the front portion of the front axle frame 401.

  The clutch housing 402 is a case that houses a clutch that transmits the power of the prime mover E1 in an intermittent manner. The transmission case 403 is a case that accommodates the transmission. The transmission shifts the power of the prime mover E1 transmitted via the clutch and transmits it to at least the rear wheel 7B of the front wheels 7A and the rear wheels 7B. The differential case 404 is a case that houses a differential that transmits the power changed by the transmission to the rear wheel 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 an attachment frame 409 to which the irrigation tank T1 is attached (supported), and a first attachment portion 410 and a second attachment portion 411 that attach the attachment 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 that protrudes forward from the tractor 1. The irrigation tank T1 is mounted on the mounting portion 412.

The mounting frame 409 includes a first frame member 413R provided on one side (right side) of the vehicle body 6, a second frame member 413L provided on the other side (left side) of the vehicle body 6, and a first frame. And 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 413 </ b> R and the second frame member 413 </ b> L are formed by long rectangular pipes, and are arranged extending in the front-rear direction in the vicinity of the vehicle body 6. The first frame member 413R is arranged along the vehicle body 6 from the middle part of the vehicle body 6 in the front-rear direction (side of the transmission case 403) toward the front. The front portion of the first frame member 413R protrudes 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 portion of the second frame member 413L also protrudes forward from the vehicle body 6.

  The first attachment portion 410 and the second attachment portion 411 are members that attach the first frame member 413R and the second frame member 413L to the vehicle body 6. The second attachment portion 411 is located behind the first attachment portion 410. In the present embodiment, the first attachment portion 410 attaches the front portion of the attachment frame 409 (first frame member 413R and second frame member 413L) to the front portion of the vehicle body 6. The second attachment portion 411 attaches the rear part of the attachment frame 409 (the first frame member 413R and the second frame member 413L) to the middle part of the front and rear of the vehicle body 6.

  As shown in FIGS. 22 and 23, the first attachment portion 410 includes a first front attachment portion 410R for attaching the first frame member 413R (the front portion thereof) to the front axle frame 401 side, and a second frame member 413L (of the first attachment portion 410R). And a second front attachment portion 410L for attaching the front portion to the front axle frame 401 side. The first front mounting portion 410R has an upper portion fixed to the front portion of the first frame member 413R and a lower portion fixed to the weight bracket 407 so as to be detachable by bolts or the like. The second front mounting portion 410L has an upper portion fixed to the front portion of the second frame member 413L and a lower portion fixed to the weight bracket 407 so as to be detachable by bolts or the like. The first front mounting portion 410R and the second front mounting portion 410L are attached to the front axle frame 401 via the weight bracket 407, but may be directly attached to the front axle frame 401 or the front axle frame. The bracket member attached to 401 may be attached.

  The second attachment portion 411 includes a first rear attachment portion 411L for attaching the rear portion of the first frame member 413R to the transmission case 403, and a second rear attachment portion 411R for attaching the rear portion of the second frame member 413L to the transmission case 403. . The first rear mounting portion 411L includes first to fourth plates 414a to 414d. The first plate 414a is detachably attached to the side surface of the mission case 403 with a bolt or the like. The second plate 414b is fixed to the first plate 414a on the inner side K4 in the width direction, and protrudes outward in the width direction K3 from the first plate 414a. The lower portion of the third plate 414c is fixed to the front portion of the second plate 414b and the end on the width direction outer side K3 side, and protrudes upward from the second plate 414b. The fourth plate 414d has a lower end 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. 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 includes first to fourth plates 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. The second rear mounting portion 411R is formed symmetrically with the first rear mounting portion 411L with respect to a vertical plane along the front-rear direction. Description of the second rear mounting portion 411R is 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 and is a first portion 412a protruding forward from the vehicle body 6 (tractor 1) and a front portion of the second frame member 413L. Of the second part 412b projecting forward from the vehicle body 6 (tractor 1), the third part 412c connecting the front parts of the first part 412a and the second part 412b, the first part 412a and the second part 412b. It has the 4th site | part 412d which connects rear parts. The third portion 412c and the fourth portion 412d are formed by square pipes.

  In the present embodiment, the first portion 412a is integrally formed with the first frame member 413R. However, 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 or bolts. The second portion 412b is integrally formed with the second frame member 413L. However, the second portion 412b is formed separately from the second frame member 413L, and is welded, riveted or formed on the second frame member 413L. You may fix with a volt | bolt etc.

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

As shown in FIG. 20, the first band 416R is disposed on the right side of the irrigation tank T1, and is provided from the front surface of the irrigation tank T1 to the rear surface through the upper surface. The first band 416R is disposed on the upper surface of the irrigation tank T1 between the water supply part 417 and the protrusion 418R provided at the center of the irrigation tank T1 (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 a first attachment tool 420R configured by bolts and nuts. Note that a bolt insertion hole 421R (a hole through which a bolt is inserted) formed on one end side of the first band 416R is formed as a long hole that is long in the vertical direction (see FIG. 23). The other end side of the first band 416R is attached to the fourth portion 412d by the second attachment 422R. The second attachment 422R attaches the other end of the first band 416R to the fourth portion 412d (attachment frame 409) so as to be vertically movable. The second fixture 422R includes 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 portion of the bolt 423. A lower portion of the bolt 423 is a screw portion 423a in which a male screw is cut, and penetrates the fourth portion 412d up and down. The first nut 424 is screwed into the screw portion 423a on the upper surface side of the fourth portion 412d. The second nut 425 is screwed into the screw portion 423a on the lower surface side of the fourth portion 412d. By rotating the first nut 424 in the tightening direction and rotating 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 disposed 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 disposed between the water supply part 417 and the protruding part 418L on the upper surface of the irrigation tank T1 (see FIG. 22). The second band 416L is fixed to the mounting portion 412 in the same manner as the first band 416L by the first mounting tool 420L and the second mounting tool 422L. Since the first fixture 420L and the second fixture 422L have the same configuration as the first fixture 420R and the second fixture 422R, description thereof is omitted.

  As shown in FIGS. 21 to 23, headlamps 426 </ b> L and 426 </ b> R and a light bracket 427 for mounting the headlamps 426 </ b> L and 426 </ b> R are provided at the front portion of the mounting frame 409. That is, the mounting frame 408 includes a headlamp (right headlamp 426L, left headlamp 426R) and a light bracket 427. The headlamp 426L, the headlamp 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 member, and has a first vertical hook part 427a, a second vertical hook part 427b, and a horizontal hook part 427c. The lower part of the first vertical hook 427a is fixed to a fixing member 428R fixed to the right part of the front surface of the third portion 412c. The lower part of the second vertical hook part 427b is fixed to a fixing member 428L fixed to the left part of the front surface of the third portion 412c. The recumbent portion 427c connects the upper portions of the first recumbent portion 427a and the second recumbent portion 427b.

As shown in FIG. 23, the headlamp 426R is fixed to a stay member 429R fixed to the first vertical flange 427a. The headlamp 426L is fixed to a stay member 429L fixed to the second vertical flange 427b.
The transplanting machine 4 includes an irrigation device (liquid supply device) 430 shown in FIG. This irrigation apparatus 430 is an apparatus for irrigating the seedling N1 planted in the cocoon R1 (field) by the planting tool 137. That is, the transplanting machine 4 is a working machine that can perform the seedling planting work for planting the seedling N1 on the ridge R1 (field) and the irrigation work for irrigating the seedling N1 to be planted in one step while traveling with one machine. is there.

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

  As shown in FIG. 20, the suction hose 431 is disposed in the front-rear direction along the vehicle body 6 and is disposed rearward from the tractor 1. Further, the suction hose 431 is disposed 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 member screwed to the first frame member 413R, or the like can be considered. The suction hose 431 may be disposed along the second frame member 413L and attached to the second frame member 413L with a fixture. A suction hose 431 disposed rearward from the tractor 1 is disposed on the transplanter 3 via the rotary tiller 2.

  As shown in FIGS. 9A and 10, the irrigation pump 432 is provided at the front portion of the second transplantation frame 69B. The irrigation pump 432 is provided with a single (one) irrigation pump 432 for one transplanter 3. That is, one irrigation pump 432 feeds water (liquid) to all the planting tools 137 equipped in the transplanter 3. In other words, all the seedlings N1 planted with one transplanter 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 is a mechanical booster pump (two Mayu-shaped rotors in the casing are synchronously rotated in opposite directions by drive gears provided at the ends of the shafts supporting the rotors. Structure pump).

  As shown in FIG. 24, the irrigation pump 432 includes a casing 438, a pump shaft 439, a suction part 440, and a discharge part 441. A rotor is accommodated 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 part 440 and discharged from the discharge part 441. The suction part 440 is provided in the upper part of the casing 438. A first hose joint 442 is attached to the suction part 440. The other end (rear end) of the suction hose 431 is connected to the first hose coupling 442.

The discharge part 441 is provided in the lower part of the casing 438. A second hose joint 443 is attached to the discharge part 441. The second hose joint 443 has four connection parts, that is, first to fourth connection parts 444a to 444d.
The delivery hose is provided corresponding to the number of planting tools 137 (planting device). That is, in this embodiment, the delivery hose is provided with four hoses of first to fourth delivery hoses 433a to 433d. It is sufficient that at least one planting tool 137 is provided. When one planting tool 137 is provided, 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 valves 434 are provided corresponding to the number of planting tools 137 (planting devices). That is, the check valve 434 is provided in 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 an 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 part) of each check valve 434. The other end side of the first delivery hose 433a is connected to the connection 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 connection 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 connection 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 connection 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 part) 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 of 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 can supply water (liquid) fed from the irrigation pump 432 into the planting tool 137 (irrigate 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 by the biasing force of a spring and opens the flow path by pushing the valve body against the biasing force of the spring. is there. The check valve 434 is opened by the pressure of water (liquid) supplied by the irrigation pump 432 and is closed when the irrigation pump 432 is stopped to block the flow of water (liquid).

The delivery hoses 433a to 433d, the check valve 434, and the irrigation pipe 435 form a liquid flow path through which fluid flows between the irrigation pump 432 and the planting tool 137. Therefore, the check valve 434 is provided in the liquid flow path.
As shown in FIG. 24, the delivery port 436 of the irrigation tank T1 is positioned higher than the check valve 434. In detail, the height position H1 of the center in the vertical direction of the delivery port 436 is higher than the height position H2 of the vertical center 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, there is always water in the delivery hoses 433a to 433d and the check valve 434 (liquid flow path 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 driven intermittently. 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 toward each planting tool 137 via the delivery hoses 433a to 433d. The check valve 434 is opened by the pressure of the supplied water, and the flow of water in the check valve 434 is allowed. The water that has passed through the check valve 434 is supplied into the planting tool 137 through the irrigation pipe 435 and irrigated by 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 water is immediately irrigated. And responsiveness is good. In addition, irrigation can be performed from the start of driving of the irrigation pump 432 to the stop of driving, and the set amount of water can be supplied.

When the drive of the irrigation pump 432 is stopped, the check valve 434 is closed. Accordingly, water does not come loose from 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 transplantation unit 51 </ b> B and transmits power from the third output shaft (output shaft) 261 to the irrigation pump 432. That is, the power transmission system 448 transmits 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.

9B, 26, and 29, the power transmission system 448 includes a timing adjustment unit 449, a transmission sprocket 450, a transmission chain 451, an input sprocket 452, a power transmission device 453, and a coupling 454. Have 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 adjustment unit 449 and the transmission sprocket 450 are provided on the left side of the third output shaft 261. The timing adjustment unit 449 is provided upstream of the transmission sprocket 450 in the power transmission direction, 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 adjustment unit 449 is a mechanism that adjusts the stop time for stopping the driving of the irrigation pump 432.

  As shown in FIGS. 28A and 28B, the timing adjustment unit 449 has a drive member 456 to which the rotational power from the electric motor 71 (power source) is transmitted, and the rotational direction (the rotational direction of the power) with respect to the drive member 456. And a driven member 457 that transmits the rotational power from the driving member 456 to the irrigation pump 432. The drive member 456 and the driven member 457 are formed in a disc shape centered on the axis of the third output shaft 261. The driving member 456 and the driven member 457 are overlapped with each other in the axial direction of the third output shaft 261 and are coupled by bolts 458a to 458c and nuts 459a to 459c.

The drive 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 drive 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 460 a to 460 c that are formed through the drive member 456. The first insertion holes 460a to 460c are formed as circular holes that fit the shaft portions of the bolts 458a to 458c. The first insertion holes 460a to 460c are formed on a circumference centered on the axis of the third output shaft 261, and are formed at predetermined intervals (equal intervals) 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 461 a to 461 c are formed as arc-shaped long holes centered on the axis of the third output shaft 261. The second insertion holes are formed at positions corresponding to the first insertion holes 460a to 460c. The first insertion hole may be formed as an arc-shaped elongated hole, and the second insertion hole may be formed as a circular hole.

  By driving the shaft portions of the bolts 458a to 458c through the first insertion holes 460a to 460c and the second insertion holes 461a to 461c, and tightening the nuts 459a to 459c screwed to the shaft portions of the bolts 458a to 458c, the drive member 456 and driven member 457 are coupled. By loosening the nuts 459a to 459c, the relative position in the rotational direction of the driven member 457 with respect to the drive member 456 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 one rotation of the transmission shafts 70A and 70B. 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 moving period 462 until 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. It is driven to perform water supply (liquid supply) in a supply period 463 that is a period. Therefore, the drive of the irrigation pump 432 is stopped in the stop period 464 that is a period other than the supply period 463 in the movement period 462.

  Then, the timing adjustment unit 449 adjusts the relative position in the rotational direction of the power of the driven member 457 with respect to the driving member 456, thereby adjusting the stop timing for stopping the driving of the irrigation pump 432 (the irrigation pump 432 in the movement period 462 is adjusted). Adjustment to shift the stop time back and forth). Further, when the stop timing of the irrigation pump 432 is adjusted, the start timing at which the irrigation pump 432 starts to be driven 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 stop period 464 show a preferable example, and the present invention is not limited to this. The irrigation pump 432 may be driven for a part of the movement period 462. Preferably, the irrigation pump 432 is driven when the planting tool 137 is lowered to supply liquid, and is driven when the planting tool 137 is located at the bottom dead center position G2 or near the bottom dead center position G2. It should 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. The irrigation pump 432 may start irrigation at the same time as or after the planting tool 137 starts to descend from the top dead center position G1. By irrigating only when necessary, wasteful power consumption can be suppressed. Moreover, waste of water in the irrigation tank T1 can be suppressed, and water supply labor can be reduced.

  As shown in FIGS. 26 and 27, the input sprocket 452 is fixed to an input shaft 465 provided on the left part 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 rotate once, the input shaft 465 also rotates once.

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 is fixed to the front portion of the transplant frame 69 </ b> B by the attachment bracket 467 together with the irrigation pump 432.
As shown in FIG. 30, the power case 466 includes a left first case component 471, a right second case component 472, and a lid 473. As for the 1st case structure 471 and the 2nd case structure 472, the outer peripheral part is overlapped and the said outer peripheral part is bolt-fixed. A first housing portion 476 is formed by the first case component 471 and the second case component 472. The lid 473 is disposed on the right side of the upper part of the second case component 472 and is bolted to the second case component 472. A second housing part 477 is formed by the lid 473 and the upper part of the second case component 472. The lid 473 is fixed to the second case constituent body 472 with a small number (for example, two) of bolts and can be easily attached and detached (the second housing portion 477 can be easily opened and closed).

  As shown in FIG. 30, a protrusion 478 that protrudes to the left is provided at the lower portion of the first case component 471. The input shaft 465 is inserted into the first housing portion 476 from the protruding portion 478 and partly protrudes leftward from the protruding portion 478. An input sprocket 452 is attached to the projecting portion of the input shaft 465 so as to be integrally rotatable. The left portion of the input shaft 465 is rotatably supported by the protrusion 478 via a bearing. An output shaft 467 is rotatably supported by a lower part of the second case constituent body 472 via a bearing. The output shaft 467 is disposed 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 protrudes rightward from the second case component 472, and a pump shaft 439 is coupled to the protruding portion via a coupling 454 so as to be integrally rotatable.

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 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 transmission 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 accommodated in the first accommodating portion 476. The speed change mechanism 481 is accommodated in the second accommodating portion 477.

As shown in FIGS. 29 and 30, the clutch mechanism 479 is constituted by a pawl clutch and is provided in the lower portion of the first housing portion 476. The clutch mechanism 479 includes a drive rotator 483, a driven rotator 484, a spring (biasing member) 485, clutch teeth 486, and engagement teeth 487.
The drive rotator 483 is formed of a cylindrical member (sleeve) and is fitted on the outer periphery of the input shaft 465 by spline fitting. That is, the drive rotator 483 can rotate together with the input shaft 465 and can move in the axial direction of the input shaft 465.

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

The clutch teeth 486 are provided at the end of the drive rotator 483 opposite to the spring 485 (the right end of the drive rotator 483). The clutch teeth 486 have first clutch teeth 486a and second clutch teeth 486b provided at positions symmetrical to the diameter direction of the drive rotating body 483 with respect to the first clutch teeth 486a.
The engagement teeth 487 are provided at the end of the driven rotator 484 on the drive rotator 483 side (the left end of the driven rotator 484). The engagement teeth 487 include first engagement teeth 487a that mesh with the first clutch teeth 486a, and second engagement teeth 487b that mesh with the second clutch teeth 486b.

  When the driving rotating body 483 is located at the connection position M1 indicated by the solid line in FIG. 30, the first clutch teeth 486 mesh with the first engagement teeth 487, and the second clutch teeth 486 mesh with the second engagement teeth 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 enters a connection state in which power transmission by the intermittent mechanism 480 is performed. Further, when the drive rotator 483 is moved away from the driven rotator 484 against the biasing force of the spring 485, the drive rotator 483 is positioned at a cutting position M2 indicated by a two-dot chain line in FIG. Then, the first clutch teeth 486 are separated from the first engagement teeth 487, and the second clutch teeth 486 are separated from the second engagement teeth 487. In this state, power transmission from the input shaft 465 to the intermittent mechanism 480 is not performed. That is, the clutch mechanism 479 enters a disconnected state in which the power transmission by the intermittent mechanism 480 is disconnected and the disconnection is maintained.

By this clutch mechanism 479, planting work can be performed without performing irrigation work.
The drive rotator 483 (clutch mechanism 479) is operated by a clutch operating member 470 shown in FIGS. The clutch operation member 470 is fixed to an operation shaft 475 provided on the first case component 471. The operating shaft 475 is provided with an engaging portion 474 that engages with the drive rotator 483. By rotating the operation shaft 475 by the clutch operating member 470, the drive rotator 483 is connected to the connection position M1 and the cutting position M2. And can be operated. Note that the position of the clutch operating member 470 can be fixed between the state in which the drive rotator 483 is set to the connection position M1 and the state in which the drive rotator 483 is set to the cutting position M2.

  In the adjustment range of the timing adjustment unit 449, the first clutch teeth 486 mesh only with the first engagement teeth 487, and the second clutch teeth 486 mesh only with the second engagement teeth 487. That is, in the adjustment range of the timing adjustment 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 disconnected and then reconnected, the timing of irrigation adjusted by the timing adjustment unit 449 does not go wrong.

  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 and stop the irrigation pump 432 during the movement period 462 of the planting tool 137. . In this embodiment, the intermittent mechanism 480 transmits power when the planting tool 137 is lowered to drive the irrigation pump 432, and stops transmission of power when the planting tool 137 is lifted to stop the irrigation pump 432. Stop driving.

  As shown in FIG. 30, the intermittent mechanism 480 intermittently engages the irrigation pump 432 by intermittently meshing with the drive gear 488 to which power from the electric motor 71 (third output shaft 261) is transmitted and the drive gear 488. And a driven gear 489 to be driven. The drive gear 488 is formed integrally with the driven rotator 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 engagement gear 488 is formed on the drive gear 488 of the intermittent mechanism 480. By forming the engagement teeth 487 in the drive gear 488 of the intermittent mechanism 480, the clutch mechanism 479 can be configured compactly. The drive gear 488 is fitted (supported) on the outer periphery of the input shaft 465 so as to be relatively rotatable about the axis.

The driven gear 489 is disposed above the drive gear 488 and is fitted to the first shaft 490 so as to be integrally rotatable. The first shaft 490 is rotatably supported by the first case component 471 and the second case component 472.
As shown in FIG. 31A, the drive gear 488 is constituted by a toothless gear, and has a toothed portion 488a where teeth are formed and a toothless portion 488b where teeth are not formed. The driven gear 489 is a gear in which teeth are formed over the entire circumference. The toothed portion 488 a meshes with the driven gear 489, and the toothless portion 488 b does not mesh with the driven gear 489. When the input shaft 465 rotates once, the drive gear 488 rotates once, and the irrigation pump 432 is driven while the toothed portion 488a meshes with the driven gear 489. Further, while the missing tooth portion 488b does not mesh with the driven gear 489, the driving of the irrigation pump 432 is stopped. That is, the intermittent mechanism 480 drives the irrigation pump 432 in the supply period 463 of the movement period 462 of the planting tool 137 and stops driving the irrigation pump 432 in the stop period 464.

  The speed change mechanism 481 is a mechanism for shifting the power from the electric motor 71 (third output shaft 261) (power from the intermittent mechanism 480) and transmitting it to the irrigation pump 432. That is, it is a mechanism that changes the amount of water discharged from the irrigation pump 432 (irrigation amount) by slowing or increasing the drive speed of the irrigation pump 432 in the supply period 463. Thereby, the irrigation amount according to a seedling can be selected with respect to the seedling of a different kind (different crop).

  As shown in FIG. 30, the speed change mechanism 481 is provided downstream of the intermittent mechanism 480 in the power transmission direction. The transmission mechanism 481 includes 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 housing portion 477. The first gear 491 is fitted to the end of the first shaft 490 so as to be integrally rotatable and replaceable (detachable). The second gear 492 is fitted to the end of the second shaft 493 so as to be integrally rotatable and replaceable (detachable). The second shaft 493 is rotatably supported by the first case component 471 and the second case component 472 (see FIG. 30).

  As shown in FIG. 30, the first gear 491 and the second gear 492 are opposed to the inner surface of the lid body 473. Therefore, when the cover 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 are connected to other gears (the other first gear 491, other The second gear 492) can be easily replaced. That is, one or more first gears 491 having a different number of teeth from the first gear 491 provided in the power case 466 and a second gear 492 provided in the power case 466 have a different number of teeth. 1 or a plurality of second gears 492 are prepared (a set of one or a plurality of first gears 491 and a second gear 492 having a set of one or a plurality of gears having different gear ratios. The first gear 491 and the second gear 492 can be replaced 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, the power transmitted from the intermittent mechanism 480 to the irrigation pump 432 can be changed. Further, the first gear 491 and the second gear 492 may be switched to change the speed.

  The speed change mechanism 481 is an exchangeable type for exchanging gears, but may be a speed change mechanism for a mechanism that performs gear shifting in multiple stages by changing gears. That is, a plurality of sets of first gears 491 and second gears 492 having different gear ratios are stored in the second storage portion 477, and a plurality of stages are switched by switching the sets of the first gear 491 and the second gear 492. A mechanism that performs a shift may be used. In the present embodiment, the first gear 491 and the second gear 492 can be easily prevented from being detached by directly or indirectly pressing the first gear 491 and the second gear 492 with the lid 473.

  As shown in FIGS. 29, 30, and 31 </ b> C, the final transmission mechanism 482 includes 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 fitted to the second shaft 493 so as to be integrally rotatable. The second transmission gear 495 is fitted to the output shaft 467 so as to be integrally rotatable. The power from the intermittent mechanism 480 shifted by the speed change mechanism 481 is output from the output shaft 467 via the final transmission mechanism 482 and input to the irrigation pump 432.

Note that the final transmission mechanism 482 may not be provided.
As shown in FIG. 2, the transplanter 4 includes an irrigation tube laying device 497 for laying an irrigation tube 496 on the ridge R1 (field) formed by the rotary cultivator 2 and the cultivators 23L, 23R, and 23C. That is, the transplanting machine 4 performs at least a seedling planting operation for planting the seedling N1 and an irrigation tube laying operation for laying the irrigation tube 496 on the ridge R1 (field) where the seedling N1 is planted. It is a working machine that can be performed in the process. In addition, the transplanting machine 4 performs a cocoon forming operation for forming the cocoon R1 in the field, a seedling planting operation for planting the seedling N1 in the formed cocoon R1, and an operation for laying the irrigation tube 496 on the formed cocoon 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 attached to the irrigation tube 496 that is unwound from a freely provided tube roll 498 and laid on the ridge R1 (field), and a mounting body 499 to which the tube roll 498 is attached. And a guide member 500 for guiding the irrigation tube 496 to the ridge R1 (farm field).
The irrigation tube 496 is formed by drilling a large number of irrigation holes in a long flat tube at intervals in the longitudinal direction. Water is passed through the irrigation tube 496, and the passed water is discharged from the irrigation hole to irrigate the crop 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 cylindrical roll core 501. Specifically, the irrigation tube 496 is wound around the roll core 501 sequentially from one end of the roll core 501 in the axial direction to the other end. Further, when the irrigation tube 496 is wound up to the other end of the roll core 501, the irrigation tube 496 is folded back and wound from the other end toward the one end. In this way, the irrigation tube 496 is wound around the roll core 501 in multiple layers (multiple layers). That is, the tube roll 498 is formed by winding a plurality of layers (multiple 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 (farm field). Further, the irrigation tube 496 is laid at a position corresponding to the space between the planting tools 137 adjacent in the width direction K2 (between the two adjacent 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 a first tube roll 498R, and the second irrigation tube 496L forms a second tube roll 498L.

  As shown in FIG. 32, the attachment body 499 includes a first attachment body 499R to which the first tube roll 498R is attached and a second attachment body 499L to which the second tube roll 498L is attached. The first attachment body 499R includes a first roll support body 502R that supports the first tube roll 498R, and a first attachment body 503R that attaches the first roll support body 502R to the support arm 13R. The second attachment body 499L includes a second roll support body 502L that supports the second tube roll 498L, and a second attachment body 503L that attaches the second roll support body 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 disposed above the rotary tiller 2 (ground work machine). The first roll support 502R and the first tube roll 498R (tube roll) are positioned 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 disposed above the rotary tiller 2 (ground work machine). 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 (the first roll support body 502R and the first mounting body 503R) and the second mounting body 499L (the second roll support body 502L and the second mounting body 503L) are in the width direction of the transplanter 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 description of the second mounting body 499L will be omitted.

  As shown in FIGS. 33 and 34, the first roll support 502R includes 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 disposed to face each other with an interval in the width direction K2. A second flange 504B is disposed on the inner side K4 in the width direction of the first flange 504A. A shaft fixing portion 506A is provided at the center of the side surface of the first flange 504A 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 opposite to the first flange 504A.

  The roll shaft 505 has an axis 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. The roll shaft 505 is fixed to the shaft fixing portion 506A by a bolt 507A, and is fixed to the shaft fixing portion 506B by a 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 fitted concentrically from the outer side K3 in the width direction on the outer periphery of the roll shaft 505. 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. Thereby, the first tube roll 498R can be attached to the first roll support 502R. Further, the first roll support body 502R is supported by the first mounting body 503R so as to be rotatable about the axis in the width direction K2. That is, the tube roll 498 is provided above the rotary cultivator 2 (ground working machine) so as to be rotatable about an axis extending in the width direction K2.

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 disposed on the inner side K4 in the width direction of the first roll support body 502R. The first mounting body 503R includes a support member 508, a bracket arm 509, connecting plates 510A and 51B, a mounting substrate 511, and a mounting member 512.

The column member 508 is disposed so as to extend in the vertical direction on the inner side K4 in the width direction of the first roll support 502R. An end of the roll shaft 505 on the inner side K4 side in the width direction is supported on the support member 508 so as to be rotatable about the axis. Further, the roll shaft 505 is secured to the upper portion of the support member 508 so that it cannot move in the width direction K2.
The bracket arm 509 is arranged extending in the width direction K2 below the roll shaft 505 on the inner side K4 side in the width direction and above the support arm 13R. The lower end of the column member 508 is fixed to the end of the bracket arm 509 on the inner side K4 in the width direction. The width direction outward K3 side of the bracket arm 509 is fixed to the mounting substrate 511 by the connecting plates 510A and 51B.

  The mounting substrate 511 is disposed above the support arm 13R. The mounting member 512 is formed in a curved shape so as to extend from the front part of the support arm 13R to the rear part through the lower part. The mounting member 512 has a curved shape that opens upward. Upper portions of the mounting member 512 are fixed to the mounting substrate 511 with bolts. The first attachment body 503R is attached to the support arm 13R by sandwiching the support arm 13R between the attachment substrate 511 and the attachment member 512.

  As shown in FIGS. 32 and 33, the irrigation tube laying apparatus 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 the adjacent planting tools 137 in the width direction K2. That is, the irrigation tube 496 is laid between the two adjacent seedlings N1.

As shown in FIG. 32, the guide member is located on the rear side of the first roll support 502R (first tube roll 498R) and guides the first irrigation tube 496, and the second roll And a second guide member 500L that is positioned on the rear side of the support body 502L (second tube roll 498L) and guides the second irrigation tube 496.
As shown in FIG. 33, the guide members (first guide member 500R and second guide member 500L) are disposed above the rear cover 19B.

As shown in FIGS. 33 and 34, the guide members (the first guide member 500R and the second guide member 500L) are formed in a cylindrical shape having openings at both ends.
The first guide member 500R guides the first irrigation tube 496 unwound from the first tube roll 498R (first roll support 502R). 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 (farm field) as it goes rearward.

  The second guide member 500L guides the second irrigation tube 496 that is unwound from the second tube roll 498L (second roll support 502L). 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 in an inclined shape that moves downward from the second tube roll 498L (tube roll) toward the ridge R1 (farm field) as it goes rearward.

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 includes an upper insertion portion 513 and a guide body 514 that configures the lower end of the insertion portion 513 to the lower end of the first guide member 500R. The upper end of the insertion part 513 opens toward the lower part of the first roll support 502R (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 to face each other with an interval in the width direction K2. 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 body 514 toward the first roll support 502R. Thereby, the insertion port 515 is formed wide in the width direction K2. The upper wall 513c is formed in an inclined shape that moves in a direction away from the lower wall 513d as it goes from the upper end of the guide body 514 toward the first roll support 502R. The lower end of the insertion portion 513 is open and communicates with the inside of the guide 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 513 a and the second side wall 513 b of the insertion portion 513. Since the roll support 502 and the tube roll 498 are expanded toward the roll support 502 and the tube roll 498, even if the unwinding position of the irrigation tube 496 moves in the width direction K2, the irrigation tube 496 unwound from the tube roll 498 is smoothly moved. It can be inserted into the guide member 500. Moreover, when 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 to move away from the lower wall 513d toward the roll support 502 and the tube roll 498. When the irrigation tube 496 is unwound from the tube roll 498, the irrigation tube 496 can be prevented from coming into contact with the upper wall 513c even when 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 K <b> 2 is provided on the lower side of the insertion port 515. The first guide pin 516 is provided across the first side wall 513a and the second side wall 513b, and is supported on the first side wall 513a and the second side wall 513b so as to be rotatable about an axis extending in the width direction K2. Since the irrigation tube 496 inserted into the guide member 500 contacts the first guide pin 516, the irrigation tube 496 can be smoothly inserted into the first guide member 500R without being damaged. In addition, the 1st guide pin 516 can be abbreviate | omitted by making the edge part wall which comprises the insertion port 515 of the guide member 500 into a smooth shape without an edge.

  As shown in FIGS. 33 and 34, the guide main body 514 is formed in a rectangular tube shape having the same cross-sectional shape as the opening edge at the lower end of the insertion portion 513 and opening at both ends. A lower wall 513d of the insertion portion 513 is formed on the extension of the lower wall 514a of the guide body 514. The lower end side of the guide main body 514 is an insertion / extraction opening 519 through which the first irrigation tube 496 is inserted. The insertion / extraction port 519 is provided with a second guide pin (guide pin) 517 extending in the width direction K2. The second guide pin 517 is disposed above the insertion / exit opening 519 and is supported by the one side wall 514b and the other side wall 514c of the guide body 514 so as to be rotatable about the axis. When the irrigation tube 496 inserted from the guide member 500 contacts the second guide pin 517, the irrigation tube 496 can be smoothly fed out from the guide member 500 without being damaged.

  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 body 514. In addition, the support stay 520 is pivotally supported by a support bracket 521 that supports the lower side of the pressure device 20 via a pivot 520a so as to be rotatable about a horizontal axis. 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 on the lower surface of the first guide member 500R (guide member) to be grounded on the upper surface of the ridge R1 (farm field). The grounding member 518 includes a fixing portion 518a that is fixed to the lower surface of the lower end portion of the first guide member 500R, and a grounding portion 518b that has a curved grounding surface that contacts the upper surface of the basket R1 (field).
In this embodiment, the irrigation tube laying device 497 is a four-row planting. Therefore, two sets of the tube roll 498, the roll attachment body 499, and the guide member 500 are provided. One set is provided for cases, and three sets are provided for six-row planting, depending on the number of seedlings to be planted.

In the irrigation tube laying device 497, the irrigation tube 496 is laid as shown in FIG.
First, the irrigation tube 496 has one end (end on the unwinding side) fixed to the field before the transplanter 4 is run. With this one end fixed to the field, the transplanter 4 is run. Then, the tube roll 498 and the roll support body 502 are integrally rotated (or the tube roll 498 rotates about the roll shaft 505 with respect to the roll support body 502) by being pulled by the irrigation tube 496. Then, the irrigation tube 496 is unwound from the tube roll 498 and laid on the ridge R <b> 1 formed by the transplanter 4.

In addition, the transplanting machine 4 includes a multi-film laying device that lays 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 transplanter 3. It may be.
As shown in FIG. 32, the horizontal frame member 34 </ b> C at the center of the rear frame 30 includes a cylindrical first frame member 522 </ b> R 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 that the position can be adjusted 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 a fixture 524. The support frame 26 is supported by the machine frame 11. That is, the support member 525 is supported by the machine casing 11.
The fixture 524 includes an upper plate 524a, a lower plate 524b, and a fastener 524c that fastens the upper plate 524a and the lower plate 524b. The upper plate 524a is formed of a rectangular plate and is disposed on the upper surface of the first frame member 522. The lower plate 524b is formed of a rectangular plate and is disposed on the lower surface of the first frame member 522. The fastener 524c includes bolts that are provided at the four corners of the upper plate 524a and the lower plate 524b and are inserted into the upper plate 524a and the lower plate 524b, and nuts that are screwed into the bolts.

  The support member 525 is formed of a quadrangular columnar tubular material. The support member 525 has an upper end fixed to the lower plate 524b and protrudes downward from the lower plate 524b. A support member 526 is inserted with a support member 526 from below. The column member 526 is fixed to the support member 525 by a pin 528 and a bolt 529 so that the height can be adjusted (the vertical position can be adjusted). A rear portion of the attachment frame 527 is fixed to the lower end of the support member 526. At the front portion of the mounting frame 527, a central cultivator 23C is provided. Thus, the central cultivator 23C is attached to the support member 526.

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

The pressure wheel 534 is located behind the central cultivator 23C and rolls on the bottom 535a of the intercostal groove 535 (the groove between the first ridge R11 and the second ridge R12) formed by the central cultivator 23C. Move to squeeze the bottom 535a. In this embodiment, the pressure reducing wheel 534 is formed of a tire.
As shown in FIG. 36, the pressure reducing wheel 534 overlaps with one planting tool and another planting tool in a side 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. The other planting tools are the first planting tool 137BL and the second planting tool 137BR for planting the seedling N1 in the second bush R12.

  As shown in FIG. 36, the transplanter 4 includes a repressing device 536 that urges the support arm 530 downward to repress the pressure reducing wheel 534 toward the bottom 535a of the intercostal groove 535. The elastic 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 that protrudes rearward from the upper portion of the support member 525, a vertical frame member 537b that protrudes upward from the rear portion of the lower frame member 537a, and a support piece provided on the upper portion of the vertical frame member 537b. 537c. The lower frame member 537a is positioned below the step 542 (the footrest for the worker sitting on the front chairs 231L and 231R) and protrudes rearward from the step 542.

  The repressing device 536 includes a rotating member 538, a vertical rod 539, and a biasing member 540. The rotating member 538 is provided on the support piece 537c so as to be rotatable about the horizontal axis. The upper portion of the vertical shaft 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. A lower portion of the vertical shaft 539 is pivotally supported by a mounting piece 541 fixed to the wheel frame 533 so as to be rotatable about a horizontal axis.

  The urging member 540 is formed by a coil spring, and is fitted on the outer periphery of the vertical rod 539 so as to be relatively movable in the axial direction. An upper spring receiving member 543 positioned between the rotating member 538 and the urging member 540 is fitted to the upper portion of the vertical rod 539 so as to be movable in the axial direction. A lower spring receiving member 544 positioned between the attachment piece 541 and the biasing member 540 is fitted to the lower portion of the vertical rod 539 so as to be movable in the axial direction. In addition, a positioning pin 545 is inserted under the vertical rod 539. The positioning pin 545 is located below the lower spring receiving member 544. 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 biasing member 540 between the positioning pin 545 and the rotating member 538, the pressure reducing wheel 534 is biased downward and pressed against the bottom 535a of the intercostal groove 535. It is done. Further, the biasing force of the biasing member 540 can be adjusted by adjusting the position of the positioning pin 545.

The pressure-reducing wheel 534 may not be attached to the support arm 530 (it may not be movable up and down), and may be attached to a member fixed to the column member 526 so as not to move up and down. In this case, it is preferable that the lower end of the pressing wheel 534 is attached so as to be positioned at the same height as the lower end of the central earthing device 23C or below the lower end of the central earthing device 23C.
The transplanting machine 4 includes a tractor 1 having a vehicle body 6, a transplanter 3 that is attached to the tractor 1 and has a planting tool 137 for planting a seedling N 1 on a farm field, and a first provided on one side of the vehicle body 6. 1 frame member 413R, a second frame member 413L provided on the other side of the vehicle body 6, and a mounting portion 412 provided on the first frame member 413R and the second frame member 413L and protruding forward from the vehicle body 6 side. It has a mounting frame 409 and a transplantation body (irrigation tank T1) that is a member or device related to the transplanter 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. . Thereby, 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 protruding forward from the vehicle body 6.

The transplanting machine 4 includes a first attachment portion 410 for attaching the first frame member 413R and the second frame member 413L to the vehicle body 6, and an attachment portion for attaching the first frame member 413R and the second frame member 413L to the vehicle body 6. And a second mounting portion 411 positioned rearward of the first mounting portion 410.
According to this, the support strength of the attachment frame 409 is improved by attaching the first frame member 413R and the second frame member 413L to the vehicle body 6 by the first attachment portion 410 and the second attachment portion 411 separated from each other in the front-rear direction. Can do.

  The vehicle body 6 includes a prime mover E1, a front axle frame 401 projecting forward from the prime mover E1, a clutch housing 402 coupled to the rear of the prime mover E1, and a transmission case 403 coupled to the rear of the clutch housing 402. The first attachment portion 410 includes a first front attachment portion 410R for attaching the first frame member 413R to the front axle frame 401 side, and a second front portion for attaching the front portion of the second frame member 413L to the front axle frame 401 side. The second attachment portion 411 includes a first rear attachment portion 411L for attaching the rear portion of the first frame member 413R to the clutch housing 402 or the transmission case 403, and a rear portion of the second frame member 413L. Or the 2nd rear attachment part 411R attached to the mission case 403 is included.

According to this, the attachment frame 409 can be firmly supported on the vehicle body 6 of the tractor 1, and the support strength of the attachment frame 409 can be improved.
The mounting portion 412 is a front portion of the first frame member 413R and protrudes forward from the vehicle body 6, and a first portion 412a which protrudes forward from the vehicle body 6 and a front portion of the second frame member 413L and protrudes forward from the vehicle body 6. 2 part 412b, 3rd site | part 412c which connects the front part of 1st site | part 412a and 2nd site | part 412b, and 4th site | part 412d which connects 1st site | part 412a and the rear part of 2nd site | part 412b.

According to this, the mounting part 412 can be formed firmly, and a heavy object can be mounted on the mounting part 412.
Moreover, a transplant related body is a tank (irrigation tank T1) which stores the liquid supplied to the seedling planted by the planting tool 137.
In this embodiment, since the support strength of the mounting frame 409 can be improved, even when the tank T1 having a large capacity is mounted, the tank T1 in a state where the liquid is stored can be sufficiently supported. In other words, the capacity of the tank T1 can be increased.

  In addition, the transplanter 4 is intermittently driven to supply the liquid in the tank T1 to the planting tool 137 (irrigation pump 432), and the liquid flow between the pump 432 and the planting tool 137. And a check valve 434 that is opened by the pressure of the liquid fed by the pump 432 when the pump 432 is driven and is closed when the pump 432 is stopped to shut off the flow of the liquid.

  According to this, since the pump 432 is driven intermittently, wasteful power consumption can be suppressed, and the load on the pump 432 can be reduced. Further, since the check valve 434 is opened by the pressure of the liquid sent by the pump 432 and the liquid is sent to the planting tool 137, a mechanism for sending the liquid in the tank T1 to the planting tool 137 is simply configured. can do.

The tank T <b> 1 has a delivery port 436 that delivers the stored liquid to the pump 432, and the delivery port 436 is preferably positioned higher than the check valve 434.
According to this, the liquid flow path from the tank T1 to the check valve 434 is always filled with liquid. Therefore, as soon as the pump 432 is driven, the check valve 434 can be opened and sent to the planting tool 137, and the responsiveness is good.

Moreover, it is good to provide the headlamps 426L and 426R which are provided in the front part of the attachment frame 409 and are located in front of the transplant-related body.
When the transplant-related body (irrigation tank T1) is mounted in front of the tractor 1, the transplant-related body becomes in the way and the front lamp mounted on the tractor 1 cannot illuminate the front. However, by providing the headlamps 426L and 426R at the front part of the mounting frame 409, the front of the tractor 1 can be illuminated by the headlamps 426L and 426R even when the transplantation related body is mounted.

  Also, bands 416L and 416R for pressing and fixing the transplant-related body to the mounting portion 412; a first attachment 420R for fixing one end of the bands 416L and 416R to the mounting frame 409; and a transplant-related body for the mounting portion 412. It is preferable to include a second attachment 422R that movably attaches the other end 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 bands 416L and 416R can firmly fix the transplant-related body and can easily remove the transplant-related body.
In addition, a connection tool (suction hose 431) that is attached to the first frame body 537 or the second frame body 537 and connects the transplant-related body and the transplanter 3 is provided.
By attaching the connection tool to the first frame body 537 or the second frame body 537, the connection tool can be disposed along the first frame body 537 or the second frame body 537.

  In addition, the transplanter 4 reciprocates up and down and enters at least one planting tool 137 for planting seedlings by entering the field when descending, and a pump for supplying liquid to the planting tool 137 and supplying the seedlings to the seedlings ( The irrigation pump 432), which is a part of the movement period 462 from when 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. A pump 432 that is driven to perform liquid feeding in the period 463 and that is stopped in a stop period 464 that is a period other than the supply period 463 in the movement period 462.

  According to this, it is possible to provide an implanter that can move the pump efficiently to improve energy efficiency. For example, during the seedling planting operation, the pump 432 is driven when the liquid supply to the seedling is necessary, and the pump 432 is not driven when the liquid supply to the seedling is unnecessary. Suppression can be achieved. Moreover, the unnecessary liquid (water) supplied (irrigated) other than the location which planted the seedling can be eliminated. Further, since the pump 432 is not always driven, the load on the pump 432 can be reduced. Thereby, the early deterioration of the pump 432 can be prevented, and the life of the pump 432 can be extended.

The pump 432 may be a mechanical pump 432 that is driven by transmitting the power of the power source (electric motor 71) of the transplanter 3, or an electric pump that is driven electrically. Alternatively, a hydraulically driven pump driven by hydraulic pressure may be used.
In addition, the pump 432 is driven when the planting tool 137 is lowered to supply liquid, and the driving is stopped when the planting tool 137 is located at the bottom dead center position G2 or near the bottom dead center position G2. It is good.

  When the planting tool 137 is lowered, the weights of the planting tool 137, the support body 138, and the lifting 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 using the descending 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 drive of the pump 432 may be stopped before the planting tool 137 is located at the bottom dead center position G2.
In addition, a timing adjustment unit 449 that adjusts the stop timing for stopping the driving of the pump 432 may be provided. According to this, the pump 432 can be stopped at a desired stop timing.

  When the transplanter 4 includes a power source that drives the planting tool 137 and a power transmission system 448 that transmits power from the power source to the pump 432, the timing adjustment unit 449 includes the power transmission system. 448 is provided. In the case of an electric pump, a timing adjustment unit is incorporated in a control device that electrically controls the pump. In the case of a hydraulic pump, a timing adjustment unit is incorporated in a control device that performs control to switch a control valve that controls the pump.

The timing adjustment unit 449 is a member connected to the drive member 456 to which the rotational power from the power source is transmitted, and the drive member 456 so that the relative position in the rotation direction can be adjusted. It is good to have the driven member 457 which transmits the rotational power of this to the pump 432 side.
According to this, the stop time for stopping the driving of the pump 432 can be easily adjusted.

  In addition, the power transmission system 448 intermittently transmits the power of the power source to the pump 432 and drives and stops the pump 432 during the movement period 462, and the power source to the pump 432. A clutch mechanism 479 for intermittently transmitting power, which can be switched between a connected state in which power is transmitted by the intermittent mechanism 480 and a disconnected state in which the power transmission by the intermittent mechanism 480 is disconnected and the disconnection is maintained. It is good to have.

According to this, the driving of the pump 432 by the intermittent mechanism 480 can be stopped by the clutch mechanism 479 in the case of a farm field that does not require liquid supply (irrigation) or when it is desired to check the operation of the planting tool 137. It is possible to prevent unnecessary power consumption.
In addition, the clutch mechanism 479 is a rotating body positioned on the downstream side in the power transmission direction of the driving rotating body 483 and the driving rotating body 483, and the rotating direction with respect to the driving rotating body 483 in the adjustment range of the timing adjusting unit 449. And a driven rotating body 484 that meshes at one position.

According to this, when the clutch mechanism 479 is connected after the clutch mechanism 479 is disconnected, the timing adjusted by the timing adjustment unit 449 is not changed.
The transplanter 4 is provided in the liquid flow path between the pump (irrigation pump 432) and the planting tool 137, and is opened by the pressure of the liquid fed by the pump 432 when the pump 432 is driven. A check valve 434 is provided 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.
Moreover, the planting tool 137 is provided with two or more, and the pump (irrigation pump 432) is good to be comprised with the single pump 432 which sends liquid with respect 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 machine 4 includes planting devices 68A and 68B for planting seedlings in a field, transplanting frames 69A and 69B provided with the planting devices 68A and 68B, and a power source (electric motor 71) provided in the transplanting frame 69A. A planting drive shaft 108 that transmits power from the power source and drives the planting devices 68A and 68B, a power take-out unit 109 that takes out power from a midway portion of the planting drive shaft 108, and a power take-out unit 109 An output shaft 261 to which the motive power is transmitted, a power transmission system 448 that transmits the power from the output shaft 261, and a pump that is driven by the power from the power transmission system 448 to discharge the liquid supplied to the seedling (irrigation Pump 432).

According to this configuration, power is extracted from the midway portion of the planting drive shaft 108 that drives the planting devices 68 </ b> A and 68 </ b> B, and the power is transmitted to the pump 432. Thereby, a protrusion part is not formed in the outer end side of the width direction K2 of the transplanter 3, and the transplanter 3 can be made compact.
Further, since power is transmitted from the power source provided in the transplant frame 69A to the planting devices 68A and 68B and the pump 432, the power transmission system for transmitting power from the power source to the planting devices 68A and 68B and the pump 432 is simplified. Can be achieved.

The transplanting machine 4 includes a seedling supply device 72B that supplies seedlings to the planting device 68B, and a power transmission unit 259B that transmits the 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 for transmitting power to the seedling supply device 72B and the shaft for transmitting power to the pump 432, and the structure can be simplified.
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 the first planting device 68A. The first transplantation frame 69A and the second transplantation frame 69B provided with the pump 432 and the second implantation device 68B may be included.

According to this, the weight balance of the width direction K2 of the transplanter 4 can be made favorable.
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 a first plant provided with the first planting device 68A. The transplantation drive shaft 108 includes a transplantation frame 69A, and a second transplantation frame 69B provided with a second planting device 68B provided at an interval in the width direction K2 with respect to the first transplantation frame 69A. The first transplantation frame 69A and the second transplantation frame 69B are provided to drive the first planting device 68A and the second planting device 68B.

According to this, it is possible to simplify the structure of the power transmission system to the first planting device 68A and the second planting device 68B.
The power transmission system 448 preferably includes a speed change mechanism 481 that can change the power from the power source and transmit it to the pump (irrigation pump 432).
According to this, the transmission 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 shifting the power transmitted to the pump 432. Further, it is possible to easily adjust the supply amount of the liquid to the seedling to the supply amount that matches the seedling.

The speed change mechanism 481 includes a first gear 491 that can transmit power from the output shaft 467 and can be exchanged, and a second gear 492 that can mesh with the first gear 491 and transmit power to the pump 432 and can be exchanged. It is good to have.
According to this, it is possible to easily change the speed by exchanging gears. In addition, the structure can be made compact and the structure can be simplified.

The power transmission system 448 includes an intermittent mechanism 480 that intermittently transmits power from the output shaft 467 to the pump 432, and the speed change mechanism 481 is provided downstream 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 transmission mechanism 481 can be changed without changing the liquid supply time (irrigation time) and supply timing (irrigation timing) by the intermittent mechanism 480.

  Also, a first case structure 471 that constitutes a part of the first housing part 476 that houses the intermittent mechanism 480, and a second case structure that forms the first housing part 476 in cooperation with the first case structure 471. 472 and a lid 473 that forms a second housing part 477 for housing the speed change mechanism 481 in cooperation with the second case structural body 472, and covers the second housing part 477 so as to be openable. It is good to have.

According to this, when the lid body 473 is opened, the second housing portion 477 can be opened to access the speed change mechanism 481, and without removing the first case structure body 471 and the second case structure body 472 from each other. The first gear 491 and the second gear 492 can be exchanged.
The intermittent mechanism 480 preferably includes 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 drive the pump 432 intermittently.

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

  When the planting tool 137 is lowered, the weights of the planting tool 137, the support body 138, and the lifting 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 using the descending force of the planting tool 137. Further, the driving force of the power source to drive the pump 432 can be reduced by driving the pump 432 when the planting tool 137 is lowered and stopping the driving of the pump 432 when the planting tool 137 is raised. it can.

Moreover, it is good to have the traveling body 1 which has the motor | power_engine E1, Comprising: The traveling body 1 with which transplant frame 69A, 69B is mounted | worn.
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.
In addition, the transplanting machine 4 is an irrigation tube having an transplanting machine 3 having at least one planting tool 137 for planting seedlings in the field and an irrigation tube 496 that is unwound from a rotatable tube roll 498 and laid on the field. And a laying device 497.

According to this, the planting operation of the seedling and the laying operation of the irrigation tube 496 can be performed in one process with one machine, and the work efficiency can be improved.
The irrigation tube laying apparatus 497 may include a guide member 500 that guides the irrigation tube 496 unwound from the tube roll 498 to the farm field.
According to this, the irrigation tube 496 can be smoothly guided to the field by the guide member 500.

A plurality of planting tools 137 are provided, and the guide member 500 guides the irrigation tube 496 to be laid at a position corresponding to the space between the planting tools 137 adjacent in the width direction K2.
According to this, the irrigation tube 496 can be reliably laid between two adjacent strips by the guide member 500.
The transplanting machine 4 includes a ground working machine 2 that is disposed in front of the transplanting machine 3 and performs work on the farm field, and the tube roll 498 extends in the width direction K2 above the ground working machine 2. The guide member 500 is provided so as to be rotatable about the axis, and is inclined so as to move downward from the tube roll 498 side toward the field toward the rear.

Even if the tube roll 498 is disposed above the ground work machine 2, the irrigation tube 496 can be smoothly guided to the farm field (畝 R1) by the guide member 500.
Moreover, it has front chairs 231L and 231R provided above the ground work machine 2 and in front of the transplanter 3, 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 good to be provided below 231L and 231R.

According to this, the tube roll 498 can be arranged using the empty space in front of the front chairs 231L and 231R, and the guide member 500 can be arranged using the empty space below the front chairs 231L and 231R. it can. Thereby, the tube roll 498 and the guide member 500 can be incorporated into the transplanting machine 4 in a compact manner.
Further, the ground work machine 2 includes a cultivating unit 18 that cultivates the field, and a rear cover 19B that is swingable up and down and that forms the upper surface of the ridge R1 with soil cultivated by the cultivating unit, and a guide member 500 is preferably disposed 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 to the upper surface of the ridge R1 formed by the transplanter 4. Further, the guide member 500 can be made to follow the upper surface of the ridge R1.
In addition, the irrigation tube laying device 497 includes a support stay 520 that pivotally supports the upper portion of the guide member 500 to the rear cover 19B, and a grounding member 518 that is provided at the lower portion of the guide member 500 and contacts the upper surface of the farm field. It is good.

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

According to this, the tube roll 498 can be attached 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 provided and against 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. Further, the irrigation tube 496 delivered from the guide member 500 can be smoothly delivered to the field by the guide pins 517.
Moreover, you may provide the multifilm installation apparatus which installs a multifilm from the upper direction of the irrigation tube 496 provided in the front part of the transplanter 3 and laid in the agricultural field.

According to this, the planting operation of the seedling, the laying operation of the irrigation tube 496, and the laying operation of the multifilm can be performed in one process with one machine, and the work efficiency can be improved.
Further, it is preferable that a plurality of sets of one irrigation tube 496 laid at a position corresponding to two adjacent planting tools 137 and one tube roll 498 around which the irrigation tube 496 is unwound are provided. .

According to this, the irrigation tube laying device 497 for laying the irrigation tube 496 between the two rows of seedlings can be made to correspond well to the transplanting machine 4 for other row planting.
The transplanting work machine 4 includes a machine frame 11, a first side cultivator 23 </ b> R provided on one side part behind the machine frame 11, and a second side part provided on the other side part behind the machine frame 11. The first cultivator 23L is provided between the first side cultivator 23R and the second side cultivator 23L. The first ridge R11 is formed in cooperation with the first side cultivator 23R and Central cultivator 23C that forms a second ridge R12 in cooperation with the two-side cultivator 23L, and a first planting device 68A that is attached to the rear of the machine frame 11 and plants seedlings in the first ridge R11. And a second planting device 68B that is mounted on the rear side of the machine casing 11 and plantes seedlings in the second ridge R12.

According to this, the forming operation of the cocoon R1 and the planting operation of the seedling can be performed in one process with one machine, and the working efficiency can be improved.
Moreover, it is good to provide the pressure reducing ring 534 which is provided in the back of the central mortar 23C, and suppresses the bottom part 535a of the intercostal groove 535 between the first ridge R11 and the second ridge R12.
If soil breaks down into the intercostal groove 535 formed by the central cultivator 23C and the intercostal groove 535 is buried, it becomes difficult to drain water when it rains. Moreover, due to the landslide, it becomes shallower than the predetermined groove depth (lower than the predetermined ridge height). By crushing the created bottom portion 535a of the intercostal groove 535 with the pressure reducing wheel 534, the bottom portion 535a of the intercostal groove 535 can be finished cleanly, and drainage performance can be improved. Further, by pressing the broken soil, the inter-groove groove 535 can be formed to a predetermined groove depth.

Further, it is preferable to provide a pressure-reducing device 536 that represses the pressure-reducing wheel 534 toward the bottom portion 535a.
According to this, it is possible to satisfactorily suppress the bottom portion 535a of the intercostal groove 535 by the suppression wheel 534.
In addition, the transplanting machine 4 is supported by the machine frame 11, a support member 525 that is supported by the support member 525 so that the height can be adjusted, and a support member 525 to which the central cultivator 23 C is attached, and a support member 525. And a support arm 530 to which a pressure-reducing wheel 534 is attached so as to be swingable up and down, and a support arm 530 urged downward by a pressure device 536 may be provided.

According to this, since the pressure-reducing wheel 534 swings up and down, accumulation of soil on the member supporting the pressure-reducing wheel 534 is reduced as compared with the case where the pressure-reducing wheel 534 is fixed. Moreover, it can respond to the amount of landslide. It is also possible to adjust the height of the central cultivator 23C.
Further, the transplanting machine 4 includes a machine frame 11, a cultivating part 18 for cultivating the field, and a rear cover 19B that can swing up and down and forms the upper surface of the ridge R1 with soil cultivated by the cultivating part 18. A ground working machine 2, a support frame 26 supported by the machine frame 11 so as to be adjustable in height, and gauge wheels 27L and 27R provided on the support frame 26, and a first side cultivator 23R, The second side cultivator 23L and the central cultivator 23C are preferably attached to the support frame 26.

  According to this, it is possible to perform tilling and formation of the ridge R1 in one process with one machine. Even if the tilling 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, Since the height relationship between the central soil cultivator 23C and the gauge wheels 27L, 27R does not change, it is not necessary to adjust the heights of the first side cultivator 23R, the second side cultivator 23L, and the central cultivator 23C.

  In addition, on the side of the first planting device 68A, on the side opposite to the second planting device 68B, on the side of the first side chair 42R and the side of the second planting device 68B. The second side chair 42L arranged on the side opposite to the first planting device 68A and the first side chair 42R are located behind and support the first side chair 42R. It is preferable to include a first rear support wheel 213R and a second rear support wheel 213L that is located behind the second side cultivator 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 ridger 23R. As a result, the bottom of the groove formed by the first side cultivator 23R is suppressed by the first rear support wheel 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 cultivator 23L. As a result, the bottom of the groove formed by the second side cultivator 23L is suppressed by the second rear support wheel 213L.

The first rear support wheel 213R compresses the bottom of the groove formed by the first side cultivator 23R, and the second rear support wheel 213L suppresses the bottom of the groove formed by the second side cultivator 23L. Therefore, it is not necessary to provide the pressure-reducing wheel 534 separately, and the member can be shared.
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 is another planting plant for seedlings in the second cocoon R12. It has the planting tools 137BL and 137BR, and the suppression wheel 534 is good to overlap with the one planting tool 137AL and 137AR and other planting tools 137BL and 137BR in a side view.

When the seedling is planted in the heel R1 with the planting tool, even if the heel R1 is crushed, it is pressed by the pressure-reducing wheel 534, so that the intercostal groove 535 can be prevented from becoming shallow.
As mentioned above, although this invention was demonstrated, it should be thought that embodiment disclosed this time is an illustration and restrictive at no points. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

1 traveling body 68A planting device 68B planting device 69A transplant frame (first transplant frame)
69B transplant frame (second transplant frame)
71 Power source (electric motor)
72B Seedling Supply Device 108 Planting Drive Shaft 109 Power Extraction Unit 259B Power Transmission Unit 261 Output Shaft 432 Pump (Irrigation Pump)
448 Power transmission system 471 First case component 472 Second case component 473 Lid 476 First accommodating part 477 Second accommodating part 480 Intermittent mechanism 481 Transmission mechanism 488 Drive gear 489 Driven gear 491 First gear 492 Second gear E1 Motor K2 width direction

Claims (11)

A planting device for planting seedlings in a field;
A transplant frame provided with the planting device;
A power source provided in the transplant frame;
A planting drive shaft to which power from the power source is transmitted and drives the planting device;
A power take-out portion for taking out power from a midway portion of the planting drive shaft;
An output shaft to which power from the power take-out unit is transmitted;
A power transmission system for transmitting power from the output shaft;
A pump that is driven by power from the power transmission system and discharges the liquid supplied to the seedling;
Transplanting machine equipped with. A seedling supply device for supplying seedlings to the planting device;
A power transmission unit that transmits power from the output shaft to the seedling supply device;
The transplanting machine according to claim 1, comprising: The planting device includes a first planting device and a second planting device different from the first planting device,
The transplant frame is
A first transplantation frame provided with the power source and the first planting device;
The transplanting machine according to claim 1 or 2, comprising the second transplanting frame provided with the pump and the second planting device. The planting device includes a first planting device and a second planting device different from the first planting device,
The transplant frame is
A first transplantation frame provided with the first planting device;
A second transplantation frame provided with an interval in the width direction with respect to the first transplantation frame and provided with the second implantation device,
The planting drive shaft is provided over the first transplantation frame and the second transplantation frame, drives the first planting device, and drives the second planting device. The transplanting machine described.   The transplanting machine according to any one of claims 1 to 4, wherein the power transmission system includes a speed change mechanism capable of shifting power from a power source and transmitting the power to the pump.   The transmission mechanism includes a first gear that can transmit power from the output shaft and can be exchanged, and a second gear that can mesh with the first gear and transmit power to the pump and can be exchanged. 5. The transplanting machine according to 5. The power transmission system includes an intermittent mechanism that intermittently transmits power from an output shaft to the pump,
The transplanting machine according to claim 5 or 6, wherein the speed change mechanism is provided on the downstream side in the power transmission direction of the intermittent mechanism. A first case structure that constitutes a part of a first housing portion that houses the intermittent mechanism;
A second case structure that forms the first housing portion in cooperation with the first case structure;
A lid that forms a second accommodating portion that accommodates the speed change mechanism in cooperation with the second case structure, and the lid closes the second accommodating portion so as to be openable;
The transplanting machine according to claim 7, comprising:   The transplanting operation according to claim 7 or 8, wherein the intermittent mechanism includes a drive gear to which power from a power source is transmitted and a driven gear that intermittently meshes with the drive gear and intermittently drives the pump. Machine. The planting device has a planting tool that is reciprocated up and down by power from the planting drive shaft,
The power transmission system transmits power when the planting tool is lowered to drive the pump, and stops power transmission when the planting tool is raised to stop driving the pump. The transplanting machine according to any one of 1 to 9.   The transplanting machine according to any one of claims 1 to 10, further comprising a traveling body having a prime mover to which the transplanting frame is mounted.

Images