JP2018000027A - Transplanter and work machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a work machine capable of efficiently executing seedling supply work to a seedling supply device in compact configuration.SOLUTION: A work machine 4 includes: a ground work machine 2 mounted in a rear part of a travel body 1 and performing work to a field; seedling supply devices 72A, 72B arranged in a rear part of the ground work machine 2 and including a transfer mechanism 149 transferring many supply cups 147, 148 storing seedlings along a route P in a loop shape long in the front/rear; planting devices 68A, 68B arranged in a lower part of the seedling supply devices 72A, 72B and planting seedlings supplied from the seedling supply devices to a field; and front chairs 231L, 231R arranged in an upper part of the ground work machine 2 and in a front part of the seedling supply devices 72A, 72B and allowing a worker to sit thereon.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a transplanter for planting seedlings in a field and a working machine equipped with the transplanter.

Conventionally, a transplanter disclosed in Patent Document 1 is known.
The working machine disclosed in Patent Document 1 is a single-planting transplanting machine, which includes a traveling body, a rotary tiller, and a transplanting machine. Can be planted. The transplanter has a planting device for planting seedlings and a seedling supply device for supplying seedlings to the planting device.

  The seedling supply device has a large number of pots (seedling holders) that are transported along a loop-like path in plan view. A work table is provided from above the rotary tiller to above the transplanter, and a seedling holder is provided at the front of the work table. An operator boarding part is provided behind the seedling holder and on the side of the seedling supply device, and the worker sits on the worker boarding part and puts the seedling placed on the seedling holder. It can supply to the pot of a seedling supply apparatus.

JP-A-10-271902

The transplanter mentioned above can perform the supply work of the seedling to a seedling supply device from the side efficiently by providing an operator boarding part in the side of a seedling supply device. However, in the market, it has been desired to create a transplanter that can efficiently perform the operation of supplying seedlings to the seedling supply device with a more compact configuration.
Then, an object of this invention is to provide the working machine provided with this transplanting machine which can perform efficiently the supply operation | work of the seedling to a seedling supply apparatus with a compact structure, and this transplanting machine.

  A work machine according to an aspect of the present invention includes a ground work machine that is attached to a rear portion of a traveling body and that performs work on a farm field, and a plurality of supply cups that are disposed behind the ground work machine and store seedlings. A seedling supply device having a transfer mechanism for transferring the back and forth along a long loop-shaped path, a planting device provided below the seedling supply device and for planting seedlings supplied from the seedling supply device in a field, A front chair provided above the ground work machine and in front of the seedling supply device and on which an operator sits.

  The transplanter according to one aspect of the present invention is arranged behind a ground work machine that performs work on a farm field, and transfers a large number of supply cups that store seedlings along a long loop-shaped path back and forth. A seedling supply device having a mechanism, a planting device provided below the seedling supply device and for planting seedlings supplied from the seedling supply device in a field, above the ground work machine and in front of the seedling supply device And a front chair on which an operator sits.

  According to the above work machine, a ground work machine that is attached to the rear part of the traveling body and performs work on the field, and a loop that is long behind the many supply cups that are arranged behind the ground work machine and accommodate seedlings A seedling supply device having a transfer mechanism for transferring along a path, a planting device provided below the seedling supply device and for planting the seedling supplied from the seedling supply device to the field, and above the ground work machine and the seedling A front chair that is provided in front of the supply device and on which an operator sits. Thus, the operator can sit on the front chair above the ground work machine and supply seedlings from the front of the seedling supply device to the seedling supply device. Therefore, the operation of supplying seedlings to the seedling supply device can be efficiently performed with a compact configuration.

  According to the transplanter, a seedling having a transfer mechanism that is arranged behind a ground working machine that performs work on a farm field and that transports a large number of supply cups that store seedlings along a long loop-shaped path back and forth. A feeding device, a planting device provided below the seedling feeding device and for planting seedlings supplied from the seedling feeding device in the field, a front provided above the ground working machine and in front of the seedling feeding device and where an operator sits And a chair. Thereby, by using with a ground work machine, an operator can sit on the front chair above a ground work machine, and can supply the seedling to the said seedling supply apparatus from the front of a seedling supply apparatus. Therefore, the operation of supplying seedlings to the seedling supply device can be efficiently performed with a compact configuration.

It is a side view of a working machine. It is a schematic plan view of a ground working machine (rotary tiller) and a transplanter. It is a schematic rear view of a transplanter. It is a side view which shows the connection relation of a rotary machine frame and a transplant machine frame. It is a top view which shows the periphery of a front chair. It is a side view of a front chair. It is a top view which shows the position of the operator who seated on the front chair and the side chair. It is a top view of a position adjustment mechanism and a posture change mechanism. It is a rear view which shows the periphery of a side chair. It is explanatory drawing which shows the effect | action of a position adjustment mechanism. It is a side view of a posture change mechanism. It is a top view of a posture change mechanism. It is explanatory drawing which shows the effect | action of an attitude | position change mechanism. It is explanatory drawing which shows the effect | action of an attitude | position change mechanism. It is explanatory drawing which shows the effect | action of an attitude | position change mechanism. It is side surface partial sectional drawing of a 1st height change apparatus. It is a rear view of a 1st height change apparatus. It is a schematic block diagram which shows a power transmission system. 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 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 top view of a multifilm installation apparatus. It is a top view of a multifilm installation apparatus. It is a side view of a multi-film laying apparatus. It is a rear view of a multi-film laying apparatus. It is a plane partial sectional view of the front part of a multifilm laying device. It is side surface partial sectional drawing of the front part of a multifilm laying apparatus. It is side surface partial sectional drawing of the front part of a multifilm laying apparatus. It is a plane partial sectional view of the rear part of a multifilm laying device. It is side surface partial sectional drawing of the rear part of a multifilm laying apparatus. It is a back surface partial cross section figure of the rear part of a multifilm laying apparatus. It is a rear view which shows the groove cutting position of a groove cutting member. It is a rear view which shows the pressing position and gauge ring of a film presser. It is a side view of a soil covering ring and a soil covering frame. It is a rear view of a soil covering ring and a soil covering frame. It is side surface sectional drawing of the upper part of a soil covering frame. It is AA arrow sectional drawing of FIG. It is a BB arrow directional cross-sectional view of FIG. It is CC sectional view taken on the line of FIG. It is DD sectional view taken on the line in FIG. It is side surface partial sectional drawing of the lower part of a vertical support member. It is an EE arrow directional cross-sectional view of FIG. 45A. It is a side surface partial sectional view of the 2nd frame. It is a plane partial sectional view of the 2nd frame.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a working machine 4 that can plant seedlings (transplant) together with ground work (cultivation, etc.) while traveling. The work machine 4 includes a traveling body 1, a ground work machine 2 attached to the rear portion of the travel body 1, and a transplanter 3 attached to the ground work machine 2.
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. For example, the ground work machine 2 may be a standing machine that raises a basket on the field. Moreover, although the rotary cultivator 2 illustrates the side drive type rotary cultivator, it may be a center drive type rotary cultivator.

  FIG. 1 is a side view of the work machine 4. Unless otherwise specified in the embodiment, the front side (left side in FIG. 1) of the driver seated on the driver's seat 5 of the tractor 1 is the front side, the rear side of the driver (right side in FIG. 1) is the back side, and the left side of the driver (see FIG. 1 on the left side and the driver's right side (the back side in FIG. 1) as the right side. Further, the horizontal direction K2 (see FIG. 2), 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. 2 will be described as the width direction outward, and the direction of the arrow K4 in FIG. 2 will be described as the width direction inward. 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 in the width direction of the tractor 1. The inner side in the width direction is the direction opposite to the outer side in the width direction. In other words, the inner side in the width direction is the width direction K2 and a direction approaching the central portion in the width direction of the tractor 1.

  The tractor (running body) 1 includes a vehicle body 6, a front wheel (not shown) attached to the front portion of the vehicle body 6, and a rear wheel 7 attached to the rear portion of the vehicle body 6. The vehicle body 6 is configured by directly connecting an engine, a clutch housing having a clutch, a transmission case having a transmission, a differential case having a differential, and the like. The driver's seat 5 is provided at the rear part of the vehicle body 6. A steering wheel 8 is provided in front of the driver seat 5. At the rear of the vehicle body 6, a power take-out PTO shaft 22 is provided.

As shown in FIG. 1, the rotary cultivator 2 is attached to the rear portion of the tractor 1 so as to be movable up and down via a three-point link mechanism 9 and a connecting frame 10. 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. 1 and 2, the rotary tiller 2 has a rotary machine frame (work machine frame) 11. The rotary machine frame 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.
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 cultivating unit 18 is leveled by the rear cover 19B to form the upper surface of the culm. The side surface of the ridge is formed by ridgers 23L and 23R described later.

The rotary machine casing 11 includes a left support stay 24L, a right support stay 24R, and a mast 25. The support stay 24L is fixed to the support arm 13L. The support stay 24R is fixed to the support arm 13R. The mast 25 is fixed to the gear case 12.
The 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. 5) provided between the left swing arm 31L and the right swing arm 31R, A lower support 234 (see FIG. 4) 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. 2, 4, and 5, 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.

  The swing arm 31L is pivotally supported by the support stay 24L via a pivot shaft whose front end is inserted into 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. 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 FIGS. 5 and 6, the support members 224L and 224R support chairs 231L and 231R for workers (for the workers to sit), respectively. 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 supports the second front chair 231L from below. The support member 224L includes a support rod 225, a first vertical cylinder 226, a second vertical cylinder 298, a rear member 227A, a front member 227B, and an intermediate member 227C. The support rod 225 has a right end fixed to a midway portion of the swing arm 31L in the front-rear direction K1, and extends leftward from the midway portion. The first vertical cylinder 226 is fixed to the left end of the support rod 225 and extends upward. A second vertical cylinder 298 is inserted and fixed to the first vertical cylinder 226. The second vertical cylinder 298 protrudes upward from the upper end of the first vertical cylinder 226. An intermediate member 227C is fixed to the upper end of the second vertical cylinder 298. The intermediate member 227C extends in the front-rear direction K1, a front member 227B is provided at the front end, and a rear member 227A is provided at the rear end. The front member 227B and the rear member 227A extend in the width direction K2 in parallel to each other with an interval in the front-rear direction. The lower ends of the springs 228 are attached to both ends of the upper surface of the rear member 227A. A rotating plate 229 is attached to the front member 227B. The rotating plate 229 has a first plate portion 229A and a second plate portion 229B. The first plate portion 229A extends in the width direction K2, and is fixed to the front portion of the bottom surface of the second front chair 231L with a bolt 252. The second plate portion 229B extends downward from both ends (right end and left end) in the width direction K2 of the first plate portion 229A. The first plate portion 229A is pivotally supported by a pin 230 with respect to the front member 227B. Thereby, the rotating plate 229 can be rotated backward (in the direction in which the worker sitting on the second front chair 231L faces) with the pin 230 as a fulcrum (center). As indicated by the phantom line (two-dot chain line) in FIG. 6, the second front chair 231L behaves integrally with the rotating plate 229 and moves backward (secondly) as the rotating plate 229 rotates backward. Tilt in the direction toward the worker sitting on the front chair 231L. A recess 231a is provided at the bottom rear portion of the second front chair 231L. The upper end of the spring 228 is fitted in the recess 231a. Thereby, it is suppressed that the vibration which originates in the drive of the ground work machine 1 propagates to the chair 231L.

  The right support member 224R supports the right chair 231R (hereinafter referred to as a second front chair) from below. The support member 224L is configured symmetrically with the support member 224L across the center line in the width direction K2. That is, the right end of the support rod 225 of the support member 224R is fixed to the middle part of the swing arm 31L in the front-rear direction K1, and extends leftward from the middle part. Other configurations of the support member 224R are the same as those of the support member 224L. The second front chair 231R is fixed to the first plate portion of the support member 224R, and can tilt toward the rear (the direction in which the worker sitting on the second front chair 231R faces).

  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 P 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 P 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. 2 and 4, 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. 2, 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 inserted and fixed at the left end 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 inserted and fixed at the right end 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. 2, 4, and 8, the wheel frame 36L includes a front member 37L and a rear member 38L. The front member 37L has a front portion fixed to the lower portion of the vertical frame member 35L, and extends rightward from the lower portion 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 has a front portion fixed to the lower portion of the vertical frame member 35R and extends leftward from the lower portion 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 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 ridger 23L is disposed in front of the gauge ring 27L. A ridger 23R is also arranged in front of the gauge wheel 27R. The erecting device 23L is attached to the lower portion of the vertical frame member 35L. The erecting device 23R is attached to the lower portion of the vertical frame member 35R. The ridger 23L forms the left side surface of the ridge. The ridger 23R forms the right side surface of the ridge.

  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. As shown in FIG. 9, the projecting member 40 </ b> L is provided with a plurality of through-holes 210 arranged at intervals in the projecting direction (width direction K <b> 2). Similarly to the projecting member 40L, the projecting member 40R is also provided with a plurality of screw holes (not shown) arranged at intervals in the projecting direction. The number of through holes 210 may be two or more, and is not limited. In the present embodiment, three through holes 210 are provided. For convenience of explanation, the innermost screw hole in the width direction K2 is the inner through-hole 210A, the outermost screw hole in the width direction K2 is the outer through-hole 210C, and the inner through-hole 210A is outward. The screw hole positioned between the through hole 210C is referred to as an intermediate through hole 210B.

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. In FIG. 9, the expanded cross section of the AA part is shown in the virtual line circle.
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 42L and 42R. 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.

The side chairs 42L and 42R can be tilted forward (direction in which the worker sitting on the side chairs 42L and 42R faces) by the same configuration as the front chairs 231L and 231R.
As shown in FIG. 9, a through-hole 211 is formed in the cylindrical body 209L. Although not shown, a through-hole 211 is formed in the cylinder 209R as well as the cylinder 209L. The cylinders 209L and 209R are positioned and fixed with respect to the projecting members 40L and 40R by overlapping the through-hole 211 and the through-hole 210 and inserting and fixing bolts or the like (not shown) into the through-hole 211. can do.

The protruding members 40L and 40R, the cylinders 209L and 209R, the through hole 210, the through hole 211, the bolts, and the like described above are positions that can adjust the position in the width direction K2 of the first side chair 42R and the second side chair 42L. An adjustment mechanism is configured. Hereinafter, the operation of the position adjustment mechanism will be described by taking as an example the case of adjusting the position of the second side chair 42L.
First, when the through hole 211 of the cylindrical body 209L and the inner through hole 210A of the protruding member 40L are overlapped and the cylindrical body 209L is fixed to the protruding member 40L with a screw, the second side chair 42L is the most. It becomes a position (referred to as the first position) inward in the width direction (see the left figure in FIG. 10). Second, when the through-hole 211 and the outer through-hole 210C are overlapped and the cylindrical body 209L is fixed to the protruding member 40L, the second side chair 42L is positioned at the outermost position in the width direction (second position). (See the right figure in FIG. 10). Third, when the through hole 211 and the intermediate through hole 210B are overlapped to fix the cylindrical body 209L to the protruding member 40L, the second side chair 42L is located between the first position and the second position. It becomes.

  A 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 plates 212L and 212R are located inward in the width direction K4 of the columns 41L and 41R. In the case of the present embodiment, the base plates 212L and 212R are rectangular in a plan view, and the long side faces the front-rear direction K1, and the short side faces the width direction K2. 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. The base plate 212L is fixed to the cylindrical body 209L via the support column 41L. Therefore, when the cylinder 209L is moved in the width direction K2 along the protruding member 40L, the base plate 212L is also moved in the width direction K2 together with the cylinder 209L. Similarly, the base plate 212R moves in the width direction K2 together with the cylindrical body 209R. Therefore, even if the positions of the side chairs 42L and 42R are changed, the positional relationship between the side chairs 42L and 42R and the base plates 212L and 212R does not change, and the above function is maintained. The base plates 212L and 212R may be fixed at positions where they can move together with the cylinders 209L and 209R, or may be directly fixed to the cylinders 209L and 209R.

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 an urging mechanism 215, which will be described later, is attached to the lower part of these stays.
An 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 213L is rotatably attached to the lower portion of the wheel stay 39L. The rear support wheel 213L is located behind the gauge wheel (support wheel) 27L and below the second side chair 42L. A 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 (support wheel) 27R and below the first side chair 42R. 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. 5, 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. 4, 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.

  The operation unit 233 includes a case 233A, an operation member 233B, and a control device (not shown) accommodated in the case 233A. In the present embodiment, the case 233A has a substantially rectangular parallelepiped shape, and the length in the front-rear direction K1 is longer than the length in the width direction K2. The length in the width direction K2 of the case 233A is set larger than the distance between the inner end of the support frame member 232L and the inner end of the support frame member 232R. Accordingly, the lower portion of the case 233A is supported by the upper surface of the support frame member 232L and the upper surface of the support frame member 232R. 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.

  The operation unit 233 is disposed between the first front chair 231R and the second front chair 231L. Moreover, the operation part 233 is arrange | positioned in the front position rather than the seat surface center of 231R of 1st front chairs and 231L of 2nd front chairs. As a result, an operator seated on the first front chair 231R and the second front chair 231L can perform an operation by the operation unit 233 by reaching forward inward in the width direction while sitting. Very good workability.

As shown in FIGS. 2, 4, and 11 to 15, the transplanter 3 of this embodiment includes a posture changing mechanism 214 that changes the postures of the side chairs 42 </ b> L and 42 </ b> R.
The posture changing mechanism 214 changes the postures of the side chairs 42L and 42R from the first posture (see FIG. 4) in which the seating surface 42a of the side chairs 42L and 42R is substantially horizontal, and the front ( It can be changed to the second posture (see FIG. 14) inclined to the left hand side of the worker seated on the side chair 42L and the right hand side of the worker seated on the side chair 42R. In the second posture, the seating surfaces 42a of the side chairs 42L and 42R are substantially vertical (substantially perpendicular to the ground). Specifically, in the second posture, the angle of the rear member 205L with respect to the front member 204L and the angle of the rear member 205R with respect to the front member 204R are 90 degrees or less (for example, about 80 to 90 degrees). When the side chairs 42L and 42R are not used, it is possible to shorten the length of the transplanter 3 in the front-rear direction K1 by changing the posture of the side chairs 42L and 42R to the second posture. Further, 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 (second). Become posture). 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 moved forward so that the seating surfaces of the side chairs 42L and 42R remain substantially horizontal. The horizontal shaft member 207L is rotated with respect to the member 204L as a fulcrum.

Hereinafter, the configuration and operation of the posture changing mechanism 214 that changes the posture of the second side chair 42L that is the left side chair will be described. Since the configuration and operation of the posture changing mechanism that changes the posture of the first side chair 42R are the same as the configuration and operation of the posture changing mechanism 214 that changes the posture of the second side chair 42L, description thereof will be omitted.
The posture changing mechanism 214 includes a horizontal shaft member 207, a support member 208, an urging mechanism 215, and a holding mechanism 216.

The biasing mechanism 215 assists the force required for the operation when the operator performs an operation of changing the posture of the second side chair 42L from the first posture to the second posture. In the case of this embodiment, 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 tip of the damper 215 is attached to the lower part of the stay 217L. The biasing force of the damper 215 is determined when the operator performs an operation of rotating the rear member 205L upward with the horizontal shaft member 207 as a fulcrum (center) (operation from the state of FIG. 4 to the state of FIG. 14). Assist the necessary force.

  As shown in FIG. 11, the holding mechanism 216 holds the second side chair 42L in the second posture. The holding mechanism 216L includes a support rod 218, a pivot 219, a locking piece 220, a locking pin 221, a spring 222, and an operation member 223. The support rod 218 is fixed to the rear end of the front member 204L and extends upward. The pivot 219 is attached to the upper part of the support rod 218 and extends in the width direction K2. The locking piece 220 has an arcuate cutout 220a in which the proximal end side is fixed to the pivot 219 and the locking pin 221 can be fitted on the distal end side. The locking piece 220 is rotatable about the pivot 219 as a fulcrum (center). The locking pin 221 is fixed to the front portion of the rear member 205L and extends in the width direction K2. One end of the spring 222 is locked to a pin 299 protruding from the rear portion of the front member 204 </ b> L, and the other end is locked to a hole 220 b provided in the locking piece 220. The spring 222 applies an urging force to the locking piece 219 to rotate downward (clockwise in FIG. 11) with the pivot 219 as a fulcrum (center). The operation member 223 is fixed to the proximal end side of the locking piece 220. The operation member 223 is a member that is gripped when an operator performs an operation of rotating the locking piece 220 with the pivot 219 as a fulcrum.

Hereinafter, the operation of the holding mechanism 216 will be described.
First, the operator changes the posture of the second side chair 42L from the first posture to the second posture using the posture changing mechanism 214 described above. In a state where the second side chair 42L is in the second posture, the operator holds the operation member 223 and rotates the locking piece 220 in the clockwise direction (the direction of arrow A in FIGS. 13 and 15). The notch 220 a of the locking piece 220 is locked to the locking pin 221. The left figure of FIG.13 and FIG.15 shows the state before latching, and the right figure of FIG.14 and FIG.15 shows the state after latching. By locking the notch 220a of the locking piece 220 to the locking pin 221, the rear member 205L is prevented from rotating downward about the horizontal shaft member 207L, so that the second side chair 42L is It is held in the second posture. Further, since the locking piece 222 is biased downward by the spring 222, the notch 220a is not used unless the operator performs an operation of rotating the locking piece 222 upward against the biasing force of the spring 222. The locking to the locking pin 221 is not released. Therefore, the second side chair 42L can be reliably held in the second posture.

  As shown in FIG. 4, the lower support 234 supports the front 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 front portion of the support frame member 232L, and extends downward from the front portion. The right mounting plate 236 is fixed to the front portion of the support frame member 232R and extends downward from the front 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. 4 and 5, 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 housed 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. 1 to 3, the transplanter 3 includes a plurality of mounting frames 48L and 48R, a tool bar 49, a first height changing device (connection 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 around the horizontal axis (the axis 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 transplant frame (described later) relative 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. 5, 16, and 17, the first height changing device 50 includes a support bracket 56, an extension 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 with 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 shown in FIG. 4 when used.

  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 (prime mover) 71, and a planting device (also referred to as a first planting device) 68A. , 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, a planting device (also referred to as a second planting device) 68B, and a seedling supply device (second seedling). 72A) and a plurality of earthen 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. 19 to 21, the first transplantation frame 69 </ b> A includes a frame attachment part (attachment part) 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. 20 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 248 is disposed above the tool bar 49 and extends in a direction (front-rear direction) orthogonal to the tool bar 49.
The first lateral member 97 is disposed above the central member 248 and extends in a direction orthogonal to the central member 248 (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 248 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 248 and extends in a direction orthogonal to the central member 248 (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 248 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 via a cover frame 400AL described later.

  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. A right cover ring 74AR is attached to the frame support portion 73AR through a cover frame 400AR described later.

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. 18, the first transmission shaft 70A of the first transplantation 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 103.

  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).

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.
As shown in FIGS. 18, 22, and 23, the electric motor 71 is attached to the attachment plate 106A attached to the front portions of the first vertical member 92 and the third vertical member 94 in the first transplanting unit 51A. . 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 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.

  A first sprocket 114 is provided on the output shaft 107 of the electric motor 71. 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.
The central member 247A in the first transplant 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.

  A 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 116. 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.

  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.
The rotational power of the electric motor 71 is transmitted from the first sprocket 114 to the second sprocket 115 via the first chain 126, and the second output shaft 253 rotates. The power of the second output shaft 253 is transmitted from the third sprocket 116 to the fifth sprocket 118 and the seventh sprocket 120 via the second chain 127, 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 later-described twenty-second sprocket 271 (see FIG. 19) via the fourth chain 130. Further, the power of the third transmission shaft 260 is transmitted from the eleventh sprocket 124 to the later-described 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 19th sprocket 268 to the 15th sprocket 264 and the 12th sprocket 125 via the fifth chain 132. 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 later-described 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), which will be described later, 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. 24, the first planting device 68A has a plurality of (two in this embodiment) planting mechanisms 68AL and 68AR. Hereinafter, the planting mechanism 68AL is referred to as a first planting mechanism 68AL, and the planting mechanism 68AR is referred to as a second planting mechanism 68AR. The first planting mechanism 68AL is a planting mechanism located on the left side. The second planting mechanism 68AR is a planting mechanism located on the right side. The first planting mechanism 68AL and the second planting mechanism 68AR are arranged side by side in the width direction K2. The first planting mechanism 68AL and the second planting mechanism 68AR are arranged at different positions in the front-rear direction K1. That is, the second planting mechanism 68AR is attached to the 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. 19 and 24, the first planting mechanism 68AL includes a planting tool 137, a support body 138, and a lifting device 139. Similar to the first planting mechanism 68AL, the second planting mechanism 68AR includes a planting tool 137, a support 138, and a lifting 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 planting tool 137 (the first planting tool 137AL and the second planting tool 137AR) is a member for planting seedlings in a cocoon (farm field). 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. 21 and 24, the support body 138 in the first planting mechanism 68AL has its front part fixed to the first connecting member 241 and the second connecting member 242 of the planting frame 78 with bolts. 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. 19, 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. 24, the two planting mechanisms 68AL and 68AR have a left vertical member (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. 19 and 24, 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. 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 lifts the planting tool 137. 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.

  The seedling is dropped and supplied to the planting tool 137 at the raised position (top dead center position). 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 seedlings, and the lower part of the planting tool 137 enters the basket (field). When the planting tool 137 enters the cocoon, the planting tool 137 opens to form a planting hole in the cocoon and releases a seedling into the planting hole (plants the seedling).

As described above, the first planting mechanism 68AL and the second planting mechanism 68AR are arranged in different positions in the front-rear direction K1 along the width direction K2. Thus, two transplanted seedlings are planted in a staggered manner on the ridge by one transplanting unit (one of the seedlings adjacent in the width direction K2 is planted while being displaced from one to the other in the front-rear direction).
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. Moreover, since the width (length in the width direction K2) of the transplant frame 69A to which the first planting mechanism 68AL and the second planting mechanism 68AR are attached can be shortened, the work machine 4 can be made compact in the width direction K2. It can be configured.

  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. Further, when the planting tool 137 stops, the left and right planting tools 137 stop at the top dead center position. 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 a seedling of a hard vegetable such as tomato or 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. 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 will be described.
As shown in FIGS. 22 and 23, the planting tool stopping mechanism 285 includes a mounting member 286, a support rod 287, nuts 288U and 288D, a swinging 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 A in FIG. 22) to swing 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 B in FIG. As the roller 291 rotates, the cam 293 rotates in the direction opposite to the roller 291 (the direction of arrow C in FIG. 22). 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.

  Further, as shown in FIG. 22, the first planting device 68A has a lifting assist mechanism 294 that assists the lifting operation when the first planting tool 137AL and the second planting tool 137AR are lifted and lowered. . 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. 24, 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 (first planting tool 137BL), a support body 138, and a lifting device 139 (first lifting device 139BL). . Similar to the second planting mechanism 68AR, the second planting mechanism 68BR includes a planting tool 137 (second planting tool 137BR), a support body 138, and a lifting device 139 (second lifting device 139BR). .

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. 19 and 24, in the second transplanting unit 51B, the 24th sprocket 277 is supported by the support shaft 142 on the support body 138 of the first planting mechanism 68BL. 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.

  As shown in FIG. 25, 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 first supply cup 147 and the second supply cup 148 are arranged along a loop-shaped path P that is long in the front-rear direction. 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 P.

  The first supply cup 147 and the second supply cup 148 are intermittently transferred in the direction of the arrow Y along the loop-shaped path (oval arrangement path) P that is long in the front-rear direction by the transfer mechanism 149. 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. 26, 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. 27, the lid 158 of the first supply cup 147 has a first engaging portion 163. The lid 162 of the second supply cup 148 has a second engaging portion 164. The first engaging portion 163 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, 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, 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 seedlings are 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. 3 and 7, a front seedling platform 278 </ b> A and a lateral 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. 1, 3, 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. 1, 7, and 8, 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 is rotatable upward and inward in the width direction (in the direction of arrow B in FIG. B) 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. 2 and 3, 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. 21, the cover 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. 1 and 2, the soil covering ring 74AL and the soil covering ring 74AR are arranged at different positions in the front-rear direction K1. In the present embodiment, the 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, so as to cover and cover the root portion of the seedling planted by the second planting device 68B, and to suppress the root portion 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.

The work machine 4 according to the present embodiment includes a multi-film laying device 300 that lays a multi-film on a ridge. The multi-film laying device 300 includes a support frame 26, a film roll 301, a grooving member 302, a film presser (film pressing unit) 303, and a soil covering member 304.
The support frame 26 has the above-described configuration and is attached to the traveling body (tractor) 1. The film roll 301 is provided on the support frame 26, and a multi-film is wound around the axis of the support frame 26 in the width direction K <b> 2. The grooving member 302 is provided with an embedding groove for embedding the width direction end portion (the end portion in the width direction K2 of the support frame 26) of the multi-film unwound from the film roll 302 and laid on the basket of the field. Form. The film presser 303 presses both ends in the width direction K2 of the laid multifilm. The soil covering member 304 hangs soil on the side edge of the multi-film pressed by the film presser 303 and covers the side edge with the soil.

  The working machine 4 of the above embodiment includes a ground work machine 2 that is attached to the rear portion of the traveling body 1 and performs work on the farm field, transplant frames 69A and 69B provided behind the ground work machine 2, and a farm field. Planting devices 68A and 68B for planting seedlings, and the planting devices 68A and 68B are parallel to the first planting mechanisms 68AL and 68BL attached to the transplant frames 69A and 69B and the first planting mechanisms 68AL and 68BL. And the second planting mechanisms 68AR and 68BR attached to the transplant frames 69A and 69B at positions different from the first planting mechanism in the front-rear direction. This makes it possible to plant seedlings with a narrow inter-strip distance as well as ground work (cultivation, etc.) while traveling with one working machine 4. Further, the first planting mechanisms 68AL and 68BL and the second planting mechanisms 68AR and 68BR can be easily attached to the rear side of the ground work machine 2 via the transplant frames 69A and 69B.

  In addition, the work machine 4 includes mounting frames 48L and 48R extending rearward from the ground work machine 2 and a tool bar 49 attached to the attachment frames 48L and 48R. The transplant frames 69A and 69B are attached to the tool bar 49. Yes. Thereby, the transplant frames 69A and 69B to which the first planting mechanisms 68AL and 68BL and the second planting mechanisms 68BL and 68BR are attached can be easily attached to the attachment frames 48L and 48R via the tool bar 49.

  In addition, the working machine 4 includes a large number of supply cups 147 and 148 having a storage portion 160 for storing seedlings and a lid 158 provided at a lower portion of the storage portion 160, and a large number of supply cups 147 and 148. , 69B, a transfer mechanism 149 for transferring along the loop-shaped path P passing through one side in the width direction and the other side in the width direction, and the opening position of the cover 162 that can be contacted with the cover 162 and one side in the width direction. A first opening position X1 on the (left side) and a setting member 166 that can be set to the second opening position X2 on the other side in the width direction (right side) and different from the first opening position X1 in the front-rear direction, The first planting mechanisms 68AL and 68BL are capable of planting seedlings by entering the field, have first planting tools 137AL and 137BL provided below the first opening position X1, and have a second planting mechanism 68AR. 68BR is Seedlings are capable planting and enters the field, has a second planting tool 137AR provided below the second open position X2, the 137BR. Thus, only one seedling supply device may be provided for two-row planting, and two seedling supply devices may be provided in parallel for four-row planting. Therefore, it is possible to provide a working machine compatible with multiple row planting that is compact in the width direction of the transplant frame.

  The work machine 4 includes a first lifting device 139AL that lifts and lowers the first planting tools 137AL and 137BL, and a second lifting device 139AR that lifts and lowers the second planting tools 137AR and 137BR, and the first lifting device. The raising and lowering of the first planting tools 137AL and 137BL by 139AL and the raising and lowering of the second planting tools 137AR and 137BR by the second lifting device 139AR are performed simultaneously. Thereby, coupled with the fact that the first planting mechanisms 68AL and 68BL and the second planting mechanisms 68AR and 68BR are displaced in the front-rear direction, it is possible to realize staggered planting with a narrow inter-strip distance.

  The stop position when the lifting operation of the first planting tools 137AL, 137BL is stopped is the top dead center position of the first planting tools 137AL, 137BL, and the lifting operation of the second planting tools 137AR, 137BR is performed. The stop position when stopped is the top dead center position of the second planting tools 137AR and 137BR. Thereby, when a planting tool is stopped in order to perform inter-strain control, it is possible to prevent the seedling from falling down due to the planting tool hitting the stem of the planted seedling.

  Further, the work machine 4 uses the first height changing device 50 that can change the height of the transplantation frames 69A and 69B with respect to the ground work machine 2, and the height of the ground work machine 2 by the first height changing device 50. And a second height changing device 28 that can be changed independently of changing the height of the transplantation frames 69A and 69B. Thereby, the change operation of the height of the ground work machine 2 and the change operation of the height of the transplantation frames 69A and 69B with respect to the ground work machine 2 can be performed independently of each other. Therefore, since the change of the planting depth of the seedling by the first height changing device 50 can be performed independently of the change of the height of the ground work machine 2 by the second height changing device 28, the seedling is planted. It is easy to change the depth.

Moreover, since the ground work machine 2 is a rotary tiller, transplanting work can be performed while plowing with one work machine.
The transplanting machine 3 of the above embodiment includes transplanting frames 69A and 69B provided behind the ground working machine 2 that performs work on the field, and planting devices 68A and 68B for planting seedlings in the field. The devices 68A and 68B are arranged in parallel to the first planting mechanisms 68AL and 68BL attached to the transplant frames 69A and 69B, and in parallel with the first planting mechanisms 68AL and 68BL and at different positions in the front-rear direction. And second planting mechanisms 68AR and 68BR attached to the transplant frames 69A and 69B. Thereby, using with the ground work machine 2, planting of the seedling which narrowed the ground work (cultivation etc.) and the distance between stripes can be performed. Further, the first planting mechanisms 68AL and 68BL and the second planting mechanisms 68AR and 68BR can be easily attached to the rear side of the ground work machine 2 via the transplant frames 69A and 69B.

  In addition, the transplanter 3 includes mounting frames 48L and 48R extending rearward from the ground work machine 2, and a toolbar 49 attached to the mounting frames 48L and 48R. The transplant frames 69A and 69B are attached to the toolbar 49. Yes. Thereby, the transplant frames 69A and 69B to which the first planting mechanisms 68AL and 68BL and the second planting mechanisms 68BL and 68BR are attached can be easily attached to the attachment frames 48L and 48R via the tool bar 49.

  In addition, the working machine 4 of the above-described embodiment is mounted on the rear portion of the traveling body 1 and works on the farm field. The working machine 4 is arranged behind the ground working machine 2 and contains a large number of seedlings. A seedling supply device 72A, 72B having a transfer mechanism 149 for transferring the supply cups 147, 148 forward and backward along a long loop path P, and provided below the seedling supply devices 72A, 72B and supplied from the seedling supply device Planting devices 68A and 68B for planting the seedlings in the field, and front chairs 231L and 231R that are provided above the ground working machine 2 and in front of the seedling supply devices 72A and 72B and on which the operator sits. Thus, the operator can sit on the front chairs 231L and 231R above the ground work machine 2 and supply seedlings to the seedling supply device from the front of the seedling supply devices 72A and 72B. Thereby, even when two seedling supply devices are provided side by side in the width direction of the traveling body 1 in order to cope with double row planting, the work implement 4 does not increase in size in the width direction. Moreover, since the front chairs 231L and 231R are provided above the ground work machine 2, the work machine 4 can be prevented from being enlarged in the front-rear direction. Therefore, the operation of supplying seedlings to the seedling supply devices 72A and 72B can be efficiently performed with a compact configuration.

  In addition, the work machine 4 is provided on one side in the width direction of the traveling body 1 of the seedling supply devices 72A and 72B and includes side chairs 42L and 42R on which the operator sits, so that the work machine 4 is seated on the front chairs 231L and 231R. The seedling can be supplied to the seedling supply devices 72A and 72B by the worker who has been seated on the side chairs 42L and 42R. Thereby, it becomes possible to supply seedlings to the seedling supply devices 72A and 72B by a plurality of persons, and the seedling supply operation can be performed efficiently.

  Further, the seedling supply devices 72A and 72B are disposed behind the ground work machine 2 and are rotatably supported, and are disposed behind the first rotary body 150 and are rotatably supported. The first rotary body 151 and the loop-like cord body 152 spanned between the first rotary body 150 and the second rotary body 151, and the front chairs 231 </ b> L and 231 </ b> R are located in front of the first rotary body 150. Is provided. Accordingly, the front chairs 231L and 231R can be provided in front of the seedling supply devices 72A and 72B without hindering driving of the seedling supply devices 72A and 72B.

  The seedling supply device has a first seedling supply device 72A disposed on one side in the width direction and a second seedling supply device 72B disposed on the other side in the width direction, and the front chair is The first front chair 231R provided in front of the first seedling supply device 72A and the second front chair 231L provided in front of the second seedling supply device 72B. Thereby, the seedling can be supplied to the first seedling supply device 72A by the operator seated on the first front chair 231R. In addition, seedlings can be supplied to the second seedling supply device 72B by an operator seated on the second front chair 231L. Therefore, it is possible to cope with double row planting without increasing the size of the work machine in the width direction.

  In addition, the side chair is a first side chair 42R provided on one side in the width direction of the first seedling supply device 72A and a second side provided on the other side in the width direction of the second seedling supply device 72B. And a chair 42L. Thereby, the seedling can be supplied to the first seedling supply device 72A by the operator seated on 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 42L. Therefore, it is possible to efficiently supply seedlings to the seedling supply device in a working machine that supports double row planting.

  In addition, the work machine 4 includes a posture changing mechanism 214 that changes the postures of the side chairs 42L and 42R. The posture changing mechanism 214 has the posture of the side chairs 42L and 42R, and the seat surface of the side chair is substantially the same. It is possible to change between a first posture that is horizontal and a second posture that is tilted forward with respect to the first posture. Accordingly, the first posture can be set when the side chairs 42L and 42R are used, and the second posture can be set when the side chairs 42L and 42R are not used. Therefore, when the side chairs 42L and 42R are not used, the work implement 4 can be made compact in the width direction.

  The posture changing mechanism 214 holds the biasing mechanism 215 that assists the changing operation of the side chairs 42L and 42R from the first posture to the second posture, and the postures of the side chairs 42L and 42R in the second posture. Holding mechanism 216. Therefore, when the worker changes the side chairs 42L and 42R from the first posture to the second posture, the necessary force is assisted by the biasing mechanism 215, and the changing operation can be easily performed. Further, the side chairs 42L and 42R can be reliably held in the second posture by the holding mechanism 216.

In addition, the work implement 4 includes a position adjustment mechanism that can adjust the position of the side chairs 42L and 42R in the width direction, so that the distance between the side chairs 42L and 42R and the seedling supply devices 72A and 72B Can be adjusted according to the physique of the person.
In addition, the work machine 4 includes seedling placement portions 280L and 280R for placing seedlings supplied to the supply cups 147 and 148 on one side in the width direction of the ground work machine 2, and the front chairs 231L and 231R are seedlings. It arrange | positions in the said width direction other side of the mounting parts 280L and 280R. Thereby, the operator seated on the front chairs 231L and 231R can easily and efficiently perform the operation of taking out the seedlings placed on the seedling placement units 28L and 28R and supplying them to the seedling supply devices 72A and 72B. .

  In addition, the work machine 4 includes an operation unit 233 that performs a setting operation related to seedling planting above the ground work machine 2, and the front chairs 231 </ b> L and 231 </ b> R are disposed between the seedling placement units 280 </ b> L and 280 </ b> R and the operation unit 233. Has been placed. As a result, an operator seated on the front chairs 231L and 231R can perform an operation by the operation unit 233 by extending his / her hand in the width direction in the seated state, so that the workability is very good. .

In addition, since the ground working machine 1 is a rotary tiller, seedling planting work can be performed while plowing with one working machine.
The transplanting machine 3 of the above embodiment is arranged behind the ground working machine 2 that performs work on the farm field, and includes a large number of supply cups 147 and 148 that store seedlings along a loop path P that is long in the front-rear direction. Seedling supply devices 72A, 72B having a transfer mechanism 149 for transferring, planting devices 68A, 68B provided below the seedling supply devices 72A, 72B and for planting seedlings supplied from the seedling supply devices, and ground work Front chairs 231L and 231R that are provided above the machine 2 and in front of the seedling supply devices 68A and 68B and on which an operator sits are provided. Thereby, by using it with the ground work machine 2, the operator sits on the front chairs 231L and 231R above the ground work machine 2, and the seedlings to be fed from the front of the seedling supply devices 72A and 72B to the seedling supply device Supply can be made. Thereby, even when two seedling supply devices are arranged side by side in the width direction of the traveling body 1 in order to cope with double row planting, the transplanter 3 does not increase in size in the width direction. Further, since the front chairs 231L and 231R are provided above the ground work machine 2, the transplanter 3 can be prevented from being enlarged in the front-rear direction. Therefore, the operation of supplying seedlings to the seedling supply devices 72A and 72B can be efficiently performed with a compact configuration.

  In addition, the transplanter 3 includes side chairs 42L and 42R that are provided on one side in the width direction of the traveling body of the seedling supply devices 72A and 72B and are seated on the front chairs 231L and 231R. The seedling can be supplied to the seedling supply devices 72A and 72B by the worker who has been seated on the side chairs 42L and 42R. Thereby, it becomes possible to supply seedlings to the seedling supply devices 72A and 72B by a plurality of persons, and the seedling supply operation can be performed efficiently.

Next, the multi-film laying apparatus 300 will be described in detail.
As shown in FIGS. 2 and 28A, the grooving member 302, the film presser 303 (film presser), and the soil covering member 304 are provided on the left and right sides of the support frame 26 (rear frame 30). The film roll 301 is provided from one side of the rear frame 30 in the width direction K2 to the other side. The left grooving member 302L is positioned in front of the left gauge ring 27L and the left film presser 303L. The left covering member 304L is located behind the gauge ring 27L and the film presser 303L. The right groove member 302R is positioned in front of the right gauge ring 27R and the right film presser 303R. Further, the film presser 303L is located on the inner side K4 (right side) in the width direction of the gauge ring 27L. The film presser 303R is located on the inner side K4 (left side) in the width direction of the gauge ring 27R. The right soil covering member 304R is located behind the gauge ring 27R and the film presser 303R.

As shown in FIG. 37B, the gauge ring 27 (supporting ring) can roll between adjacent ribs R1 in the width direction K2 and can press the end portion in the width direction K2 of the multi-film F1. That is, the multi-film laying device 300 includes a support ring 27 that is disposed on the outer side K3 in the width direction of the film pressing portion 303 and can press the end portion in the width direction K2 of the multi-film F1.
As shown in FIG. 28A, the multi-film laying device 300 includes a left first support body 306L that supports the groove cutting member 302L so that the vertical position can be adjusted and the position can be adjusted in the width direction K2. In addition, the multi-film laying device 300 includes a right first support body 306R that supports the groove cutting member 302R so that the vertical position can be adjusted and the position can be adjusted in the width direction K2. The first supports 306L and 306R are provided on the support frame 26 (the front portion of the rear frame 30). The multi-film laying apparatus 300 includes a left second support 346L that supports the film presser 303L so that the vertical position can be adjusted and the position can be adjusted in the width direction K2. The multi-film laying device 300 includes a left second support 346R that supports the film presser 303R so that the vertical position can be adjusted and the position can be adjusted in the width direction K2. The second supports 346L and 346R are provided on the support frame 26 (the rear part of the rear frame 30).

The first support body 306L and the first support body 306R have the same structure and are bilaterally symmetric. The second support 346L and the second support 346R have the same structure and are bilaterally symmetric. In the following description, the left first support body 306L and the left second support body 346L will be described in detail, and a detailed description of the right first support body 306R and the right second support body 346R will be omitted.
As shown in FIGS. 28B to 30, the first support 306 </ b> L includes a first member 307 provided with a groove member 302, a second member 308 that supports the first member 307 so that the vertical position can be adjusted, And a third member 309 that supports the two members 308 in the width direction K2 so that the position thereof can be adjusted.

  As shown in FIG. 31, the first member 307 is located on the front side of the vertical frame member 35L and on the inner side K4 in the width direction. The first member 307 is configured by a bar having a square cross section. As shown in FIG. 33, the first member 307 is arranged in the vertical direction (up and down direction). A groove support shaft 310 is fixed to the lower end of the first member 307. The grooving support shaft 310 extends from the lower end of the first member 307 in an inclined direction that moves backward as it goes inward in the width direction K4.

  As shown in FIG. 31, a rotary member 311 is provided on the grooving support shaft 310 so as to be rotatable about the axis. A grooving member 302 is fixed to the rotating member 311 on the inner side K4 in the width direction so as to be integrally rotatable. The grooving member 302 is formed in a disk shape. Thereby, accurate grooving is possible even if the soil block forming the ridge R1 is rough. The grooving member 302 is provided in an inclined shape that shifts outward in the width direction K3 as it goes rearward. By advancing the tractor 1 (movable traveling body), the grooved member 302 causes the embedded groove 321 to move in the field H1 (between adjacent ridges R1 or ridges R1) in the working direction of the transplanter 3 (畝 R1). (Refer to FIG. 37A).

  As shown in FIGS. 31 and 33, the second member 308 includes a cylindrical body (first cylindrical body) 313 through which the first member 307 is movably inserted in the vertical direction (longitudinal direction), and the first cylindrical body 313. And a fixing tool (first fixing tool) 314 for fixing the first member 307. The first cylinder 313 is a cylinder whose top and bottom are open, and includes a first wall 313a, a second wall 313b, a third wall 313c, and a fourth wall 313d. The first wall portion 313a and the second wall 313b are provided side by side in the width direction K2. The front ends of the first wall portion 313a and the second wall portion are connected by a third wall portion 313c. In this embodiment, the 1st wall part 313a, the 2nd wall part 313b, and the 3rd wall part 313c are formed in the channel shape which bends one board | plate material and open | releases backward. The fourth wall portion 313d connects the rear ends of the first wall portion 313a and the second wall portion 313b. The fourth wall portion 313d has a screw hole (first screw hole) 315 that is formed by a thick plate on the front and rear sides and penetrates in the thickness direction. The screw hole is a hole in which a female screw is cut. The 1st fixing tool 314 is comprised with the volt | bolt, for example, and is screwed together by the 1st screw hole 315. FIG. The first member 307 is inserted between the first wall portion 313a and the second wall portion 313b and between the third wall portion 313c and the fourth wall portion 313d. The first member 307 is pressed against the third wall portion 313c by screwing (tightening) the first fixing tool 314 with respect to the first screw hole 315, and the first member 307 is fixed to the second member 308. The Further, the first member 307 can be moved up and down with respect to the second member 308 by screwing (relaxing) the first fixture 314 with respect to the first screw hole 315. The first member 307 can be adjusted in the vertical position with respect to the second member 308 by tightening and relaxing the first fixture 314.

  As shown in FIGS. 31 and 33, the third member 309 is disposed on the front side of the second member 308. The third member 309 includes a movable member (first movable member) 316 and a recumbent portion (first recumbent portion) 317 formed of a bar that is long in the width direction K2. A second member 308 is fixed to the first movable member 316. The first recumbent portion 317 supports the first movable member 316 so as to be movable in the width direction K2 (longitudinal direction).

  As shown in FIGS. 31 and 33, the first movable member 316 includes a cylindrical body (second cylindrical body) 318 through which the first horizontal flange portion 317 is inserted, and a second cylinder with respect to the first horizontal flange portion 317. And a fixture (second fixture) 319 for fixing the body 318. The second cylinder 318 is a cylinder that is open on both sides in the width direction K2, and includes a first wall 318a, a second wall 318b, a third wall 318c, and a fourth wall 318d. . A second wall portion 318b is provided below the first wall portion 318a at an interval. The rear ends of the first wall portion 318a and the second wall portion 318b are connected by a third wall portion 318c. In the present embodiment, the first wall portion 318a, the second wall portion 318b, and the third wall portion 318c are formed in a channel shape that bends one plate material and opens it forward. The third wall 313c of the first cylinder 313 is fixed to the third wall 318c of the second cylinder 318. The fourth wall portion 318d connects the front ends of the first wall portion 318a and the second wall portion 318b. The fourth wall portion 318d has a screw hole (second screw hole) 320 that is formed by a thick plate on the front and rear sides and penetrates in the thickness direction. The 2nd fixing tool 319 is comprised by the volt | bolt, for example, and is screwed together by the 2nd screw hole 320. FIG. The first recumbent part 317 is inserted between the first wall part 318a and the second wall part 318b and between the third wall part 318c and the fourth wall part 318d. By screwing (tightening) the second fixing tool 319 with respect to the second screw hole 320, the first recumbent portion 317 is pressed against the third wall portion 318c, and the first recumbent portion 317 is first movable. The member 316 is fixed. Further, by screwing (relaxing) the second fixing tool 319 with respect to the second screw hole 320, the first movable member 316 can move in the width direction K2 with respect to the first lateral flange 317. By tightening and relaxing the second fixing tool 319, the position of the first movable member 316 and the second member 308 can be adjusted in the width direction K2 with respect to the first lateral flange 317.

As described above, by adjusting the position of the first member 307 up and down with respect to the second member 308, the position of the grooving member 302 is adjusted up and down. Further, by adjusting the position of the first movable member 316 in the width direction K2 with respect to the first recumbent portion 317, the position of the second member 308 and the grooving member 302 is adjusted in the width direction K2.
As shown in FIG. 37A, by adjusting the position of the grooving member 302 in the vertical and width directions K2, the grooving member 302 is moved into the first grooving position P1, the second grooving position P2, and the third grooving. The position can be adjusted to the position P3. The first groove cutting position P1 is a position where the embedded groove 321 (321A) is formed in the corner portion R4 between the upper surface R2 and the side surface R3 of the flange R1. The second groove cutting position P2 is a position where the embedded groove 321 (321B) is formed between the corner portion R4 and the lower end of the side surface R3. The third grooving position P3 is a position where the embedded groove 321 (321C) is formed between the ridges R1 adjacent in the width direction K2 (the bottom portion R5 of the groove between the ridges R1). Multifilms may have different film width dimensions. In the present embodiment, the grooving position of the grooving member 302 can be adjusted in accordance with the width of the multi-film.

As shown in FIG. 30, a vertical hook 322 extending upward from the first horizontal hook 317 is provided at the outer end in the width direction K <b> 2 of the first horizontal hook 317. An attachment portion 323 is provided at the upper end of the vertical hook portion 322. In other words, the first support body 306 </ b> L includes the vertical flange portion 322 and the attachment portion 323.
As shown in FIG. 31, the attachment portion 323 includes a first flange portion 323a extending rearward from the upper end of the vertical flange portion 322, and a second flange portion 323b extending from the rear end of the first flange portion 323a in the width direction inward K4. And have. The second flange portion 323b is supported by a support portion (first support portion) 324 provided on the upper front side of the vertical frame member 35L. The first support body 306 </ b> L is attached to the rear frame 30 by the second flange part 323 b being supported by the first support part 324.

  As shown in FIGS. 31 and 33, the first support portion 324 includes a cylindrical body (third cylindrical body) 325 fixed to the vertical frame member 35L, and a second flange 323b (attachment portion) to the third cylindrical body 325. 323) and a fixture (third fixture) 326. The third cylinder 325 is a cylinder that is open on both sides in the width direction K2, and includes a first wall 325a, a second wall 325b, a third wall 325c, and a fourth wall 325d. . A second wall portion 325b is provided below the first wall portion 325a with a gap therebetween. The rear ends of the first wall portion 325a and the second wall portion 325b are connected by a third wall portion 325c. In the present embodiment, the first wall portion 325a, the second wall portion 325b, and the third wall portion 325c are formed in a channel shape that bends one plate material and opens it forward. The third wall portion 325c is fixed to the upper part of the front surface of the vertical frame member 35L. The fourth wall portion 325d connects the front ends of the first wall portion 325a and the second wall portion 325b. The fourth wall portion 325d has a screw hole (third screw hole) 327 that is formed by a thick plate on the front and rear sides and penetrates in the thickness direction. The 3rd fixing tool 326 is comprised by the volt | bolt, for example, and is screwed together by the 3rd screw hole 327. FIG. The second flange part 323b is inserted between the first wall part 325a and the second wall part 325b and between the third wall part 325c and the fourth wall part 325d. By screwing (tightening) the third fixing member 326 with respect to the third screw hole 327, the second flange portion 323b is pressed against the third wall portion 325c. Thereby, the attachment portion 323 is fixed to the first support portion 324.

  As shown in FIGS. 28 to 30, the multi-film laying apparatus 300 can adjust the vertical position of the roll support shaft 328 that supports the film roll 301 by penetrating in the axial direction and the roll support shaft 328 (film roll 301). And a roll support portion 329 for supporting. The film roll 301 (multifilm) is formed in a width across the width direction K2 of the ridge R1. The roll support shaft 328 is formed to have a length longer than the width of the film roll 301. The roll support portion 329 is provided on the left first support body 306L and the right first support body. The left roll support portion 329 supports the left side of the roll support shaft 328, and the right roll support portion supports the right side of the roll support shaft 328.

As shown in FIGS. 28 to 30, the roll support portion 329 is formed in a rod shape that is long in the width direction K2 with the movable member (second movable member) 330, and the second movable member 330 can be moved in the width direction K2. , A stay member 332 fixed to the second movable member 330, and a shaft support member 333 attached to the stay member 332.
As shown in FIG. 31 and FIG. 32, the second movable member 330 includes a cylinder (fourth cylinder) 334 through which the second horizontal flange 331 is inserted, and a fourth cylinder relative to the second horizontal flange 331. And a fixture (fourth fixture) 335 for fixing the body 334. The fourth cylinder 334 is a cylinder that is open on both sides in the width direction K2, and includes a first wall 334a, a second wall 334b, a third wall 334c, and a fourth wall 334d. . A second wall portion 334b is provided in front of the first wall portion 334a at an interval. The upper ends of the first wall portion 334a and the second wall portion 334b are connected by a third wall portion 334c. In this embodiment, the 1st wall part 334a, the 2nd wall part 334b, and the 3rd wall part 334c are formed in the channel shape which bends one board | plate material and open | releases ahead. The fourth wall portion 334d connects the lower ends of the first wall portion 334a and the second wall portion 334b. The fourth wall portion 334d is formed of a nut. The 4th fixing tool 335 is comprised by the volt | bolt, for example, and is screwed together by the 4th wall part 334d. The second recumbent part 331 is inserted between the first wall part 334a and the second wall part 334b and between the third wall part 334c and the fourth wall part 334d. When the fourth fixing member 335 is screwed (tightened) with respect to the fourth wall portion 334d, the second recumbent portion 331 is pressed against the third wall portion 334c, and the second recliner portion 331 is second movable. The member 330 is fixed. Further, the second movable member 330 can be moved in the width direction K2 with respect to the second lateral flange 331 by screwing (relaxing) the fourth fixing member 335 with respect to the fourth wall 334d. By tightening and relaxing the fourth fixture 335, the position of the second movable member 330 can be adjusted in the width direction K2 with respect to the first recumbent portion 317.

  As shown in FIGS. 31 and 32, the stay member 332 is fixed to the first wall 334a so as to protrude rearward. The stay member 332 includes a first insertion hole 336 and a second insertion hole 337 formed behind the first insertion hole 336. The first insertion hole 336 is formed in a circular hole. The second insertion hole 337 is formed in an arc shape centered on the center of the first insertion hole 336. The second insertion hole 337 is a circular arc hole that is long in the vertical direction (up and down).

  As shown in FIGS. 31 and 32, the shaft support member 333 is formed of a plate material that is long in the front-rear direction. The front portion 333a of the shaft support member 333 is superimposed on the surface of the stay member 332 on the inner side K4 in the width direction, and is fixed by the first bolt 341A, the first nut 342A, the second bolt 341B, and the second nut 342B. ing. The rear portion 333b of the shaft support member 333 has a shaft support hole 338 formed by a circular hole. A roll support shaft 328 is inserted into and supported by the shaft support hole 338.

As shown in FIG. 32, a nut member is fixed to the rear portion 333 b of the shaft support member 333, and a fixing bolt 344 is screwed to the nut member 343. The fixing bolt 344 is moved toward the roll support shaft 328 by being screwed to fix the roll support shaft 328. Further, the fixing bolt 344 is retracted with respect to the roll spindle 328 by being screwed back.
As shown in FIG. 31, a third insertion hole 339 corresponding to the first insertion hole 336 and a fourth insertion hole 340 corresponding to the second insertion hole 337 are formed in the front portion of the shaft support member 333. Yes. The first bolt 341 </ b> A is inserted through the first insertion hole 336 and the third insertion hole 339. The first nut 342A is screwed to the first bolt 341A. The second bolt 341 </ b> B is inserted through the second insertion hole 337 and the fourth insertion hole 340. The second nut 342A is screwed into the second bolt 341B. By loosening the first bolt 341A and the second bolt 341B, the shaft support member 333 can swing up and down. Further, by tightening the first bolt 341A and the second bolt 341B, the shaft support member 333 is fixed at a position where it swings up and down. That is, the shaft support member 333 supports the roll support shaft 328 so that the vertical position can be adjusted. In other words, the first support 306L includes the shaft support member 333 that supports the roll support shaft 328 so that the vertical position can be adjusted.

As shown in FIGS. 28 and 29, the second support 346 </ b> L includes a first frame body 347 and a second frame body 348. The first frame body 347 is supported by a support portion (second support portion) 349 fixed to the rear end of the rear member 38L so that the position of the first frame body 347 can be adjusted vertically. The second frame body 348 is supported by the first frame body 347.
As shown in FIGS. 34 and 35, the second support portion 349 is formed of a plate material whose plate surface faces the width direction K2. The second support part 349 is provided with a pivot pin 350 and an arc groove 351. The pivot pin 350 passes through the second support portion 349 in the thickness direction (width direction K2) and protrudes from the second support portion 349 in the width direction inward K4. The arc groove 351 has an arc shape centered on the axis of the pivot pin 350, and is long in the vertical direction (up and down).

  As shown in FIGS. 34 and 35, the first frame body 347 is formed of a plate material whose plate surface is directed up and down. The first frame body 347 includes a first portion 347a at the front portion, a second portion 347b as an intermediate portion, and a third portion 347c at the rear portion. The first portion 347a is located on the inner side K4 in the width direction of the second support portion 349. A cylindrical boss 352 having an axial center in the width direction K2 is fixed to the front end of the first portion 347a. The boss 352 is externally fitted to the pivot pin 350 so as to be rotatable about its axis and is prevented from being removed. An attachment shaft 353 is provided on the lower surface of the first portion 347a.

  As shown in FIG. 36, the mounting shaft 353 has a male screw portion 353a that passes through the circular arc groove 351, and a nut 354 is provided on the male screw portion 353a on the outer side K3 side in the width direction of the second support portion 349. It is screwed. By loosening the nut 354, the first frame body 347 (second support body 346L) can swing up and down around the pivot pin 350. Further, by tightening the nut 354, the first frame body 347 (second support body 346L) is fixed at a position where it is swung up and down. Thereby, the position of the first frame body 347 can be adjusted up and down. By adjusting the position of the first frame body 347 in the vertical direction, the soil covering member 304 can be adjusted in the vertical direction.

As shown in FIG. 34, the second portion 347b extends in an inclined direction in which the second portion 347b shifts inward in the width direction K4 as it goes rearward from the rear end of the first portion 347a. The third portion 347c extends rearward from the rear end of the second portion 347b.
As shown in FIGS. 34 and 35, the second frame body 348 (second support 346L) includes a first support member 356 that supports the film presser 303 so that the vertical position can be adjusted, and a width of the first support member 356. And a second support member 357 that supports the position in the direction K2 so as to be adjustable.

The second support member 357 will be described first. As shown in FIG. 35, the second support member 357 includes a support frame 358 that supports the first support member 356, and an attachment body 359 to which the support frame 358 is attached.
As shown in FIGS. 34 to 36, the support frame 358 includes a bracket plate 360, a mounting rod 361, and a stay plate 362. The bracket plate 360 is formed in an L shape by bending a band plate material, and includes a vertical plate portion 360a and a horizontal plate portion 360b. The vertical plate portion 360a is formed long in the vertical direction (up and down). The horizontal plate portion 360b extends inward in the width direction K4 from the upper end of the vertical plate portion 360a. The mounting rod 361 is fixed to the lower end of the vertical plate portion 360a. Further, the mounting rod 361 protrudes from the vertical plate portion 360a outward in the width direction K3. The stay plate 362 is fixed to the end portion of the horizontal plate portion 360b in the protruding direction. The stay plate 362 is projected forward from the horizontal plate portion 360b.

  As shown in FIGS. 34 to 36, the attachment body 359 is fixed to the second portion 347 b of the first frame body 347. The attachment body 359 includes a cylinder (fifth cylinder) 363 and a fixture (fifth fixture) 364. The fifth cylinder 363 is a cylinder that is open on both sides in the width direction K2, and includes a first wall 363a, a second wall 363b, a third wall 363c, and a fourth wall 363d. . A second wall portion 363b is provided in front of the first wall portion 363a at an interval. Lower ends of the first wall portion 363a and the second wall portion 363b are connected by a third wall portion 363c. The third wall portion 363c is fixed to the upper surface of the second portion 347b of the first frame body 347. In the present embodiment, the first wall portion 363a, the second wall portion 363b, and the third wall portion 363c are formed in a channel shape that bends one plate material and opens upward. The fourth wall portion 363d connects the upper ends of the first wall portion 363a and the second wall portion 363b. The fourth wall portion 363d has a screw hole (fifth screw hole) 365 that is formed by thick plates on the top and bottom and penetrates in the thickness direction. The fifth fixture 364 is constituted by, for example, a bolt and is screwed into the fifth screw hole 365.

  The mounting rod 361 is inserted between the first wall portion 363a and the second wall portion 363b and between the third wall portion 363c and the fourth wall portion 363d. By screwing (tightening) the fifth fixing tool 364 with respect to the fifth screw hole 365, the attachment rod 361 is pressed against the third wall portion 363c, and the support frame 358 is fixed to the attachment body 359. Further, the support frame 358 can move in the width direction K2 with respect to the attachment body 359 by screwing (relaxing) the fifth fixing tool 364 with respect to the fifth screw hole 365. By tightening and loosening the fifth fixture 364, the position of the support frame 358 can be adjusted in the width direction K2. Thereby, the position of the film presser 303 can be adjusted in the width direction K2.

  As shown in FIGS. 34 to 36, the first support member 356 includes a swing member 366, a support rod 367, and a biasing member 368. The rocking member 366 is formed of a strip material that is long in the front-rear direction. The swing member 366 has a cylindrical portion 369 at the rear. The cylinder portion 369 is externally fitted to a swing support shaft 370 provided at the lower portion of the vertical plate portion 360a so as to be rotatable about the axis. The swing support shaft 370 protrudes from the vertical plate portion 360a inward in the width direction K4. The front portion of the swing member 366 can swing up and down around the swing support shaft 370.

A rotation support shaft 371 is provided at the front portion of the swing member 366. A film presser 303 is rotatably supported on the rotation support shaft 371. The film presser 303 is formed in a wheel shape and presses the multifilm F1 while rolling on the multifilm F1 unwound from the film roll 301 (see FIG. 37B).
As shown in FIG. 36, the support rod 367 is formed of a rod, and has a vertical rod portion 367a that is long in the vertical direction, and a shaft portion 367b that extends outward in the width direction K3 from the lower end of the vertical rod portion 367a. The upper part of the vertical hook part 367a passes the rotating member 372 vertically (up and down). The rotating member 372 is supported by the front portion of the stay plate 362 so as to be rotatable about the axis in the width direction K2. The shaft portion 367 b is inserted in the middle portion of the swing member 366 (between the swing support shaft 370 and the rotation support shaft 371).

  As shown in FIG. 36, a plurality of first pin holes 373 are formed in the longitudinal direction in the upper portion of the vertical flange portion 367a. A first pin 374 made of a beta pin or the like is selectively inserted into the plurality of first pin holes 373. A washer 375 is provided between the first pin 374 and the rotating member 372. By inserting the first pin 374 into the other first pin hole 373 (by replacing the first pin 374 with respect to the plurality of first pin holes 373), the vertical position of the support rod 367 can be adjusted. By adjusting the vertical position of the support rod 367, the vertical position of the swing member 366 can be adjusted. Thereby, the position of the film presser 303 can be adjusted up and down.

  As shown in FIG. 37B, the position of the film presser 303 can be adjusted to the first press position and the second press position by adjusting the position of the film presser 303 in the vertical and width directions K2. The first pressing position S1 is a position where the end portion of the multi-film F1 is pressed at the corner portion R4 between the upper surface R2 and the side surface R3 of the flange R1. That is, it is a position corresponding to the first groove cutting position P1 of the groove cutting member 302. The second pressing position S2 is a position where the end portion of the multi-film F1 is pressed between the corner portion R4 of the flange R1 and the lower end of the side surface F3. That is, it is a position corresponding to the second grooving position P2 of the grooving member 302. The pressing position of the film presser 303 can be changed corresponding to the groove cutting position of the groove cutting member 302. The end of the multi-film F1 corresponding to the third grooving position P3 of the grooving member 302 is pressed by the gauge ring 27L (27R).

A plurality of second pin holes 376 are formed in the longitudinal direction at the lower portion of the vertical flange portion 367a. A second pin 377 made of a beta pin or the like is selectively inserted through the plurality of second pin holes 376.
The urging member 368 is configured by a coil spring, and is externally fitted between the rotating member 372 and the second pin 377 in the vertical flange portion 367a. A washer 378A is provided between the biasing member 368 and the rotating member 372. A washer 378B is provided between the urging member 368 and the second pin 377. The urging force (spring force) of the urging member 368 acts in a direction in which the support rod 367 and the swinging member 366 are pushed down. Accordingly, the film presser 303 is pressed downward by the biasing force of the biasing member 368. Further, the urging force of the urging member 368 can be changed by inserting the second pin 377 into another second pin hole 376 (replace the second pin 377 with respect to the plurality of second pin holes 376). it can.

As shown in FIGS. 28, 29, and 34, the soil covering member 304 is supported by the first frame body 347 via a support device 379. The support device 379 includes a mounting stay 380 and a bearing member 381.
As shown in FIGS. 34 and 35, the attachment stay 380 is formed of a plate material, and has a horizontal wall 380a attached to the third portion 347c of the first frame body 347, and a vertical wall 380b extending downward from the rear end of the horizontal wall 380a. And have. The horizontal wall 380a is disposed in an inclined shape that moves outward in the width direction K3 as it goes rearward, and overlaps the lower surface of the third portion 347c. In addition, a long hole 382 is formed in the lateral wall 380a that is long in the inclined direction and moves outward in the width direction K3 as it goes rearward. The lateral wall 380a (attachment stay 380) is attached to the third portion 347c by a bolt 383 that passes through the elongated hole and the third portion 347c and a nut 384 that is screwed to the bolt 383. The position of the horizontal wall 380a (mounting stay 380) can be adjusted in the length direction of the long hole 382. A mounting bolt 385 is fixed to the vertical wall 380b so as to protrude rearward. The bearing member 381 is rotatably attached by the mounting bolt 385 and a nut 386 screwed to the mounting bolt 385. A soil covering member 304 is attached to the bearing member 381. The soil covering member 304 is formed of a disk, and the position of the mounting stay 380 is adjusted within the range of the long hole 382, so that the soil covering member 304 moves in the inclined direction in which it shifts outward in the width direction K3 as it goes rearward. The position can be adjusted.

According to said multi-film laying apparatus 300, there exist the following effects.
The multi-film laying device 300 includes a support frame 26 mounted on a movable traveling body 1 (tractor), and a multi-film F1 wound around the axis of the support frame 26 in the width direction K2 provided on the support frame 26. Film roll 301 and a grooving member 302 that forms an embedded groove 321 in the field for embedding the end in the width direction K2 of the multi-film F1 unwound from the film roll 301 and laid on the basket R1 of the field. And a first support 306L that supports the grooving member 302 so that the vertical position can be adjusted and the position can be adjusted in the width direction K2. Thereby, the formation position of the embedding groove | channel 321 in the width direction K2 of the support frame 26 can be changed, and the embedding groove | channel 321 can be formed corresponding to the multifilm F1 from which width | variety differs.

  Further, the grooving member 302 includes a first grooving position P1 which is a position where the embedded groove 321A is formed at the corner portion R4 between the upper surface R2 and the side surface R3 of the flange R1, and the corner portion R4 and the lower end of the side surface R3. Position adjustment to a second groove cutting position P2 that is a position for forming a buried groove 321B therebetween and a third groove cutting position P3 that is a position for forming a buried groove 321C between adjacent flanges R1 in the width direction K2 Is possible. Thereby, wide position adjustment of the grooving member 302 is made possible.

  The first support 306L includes a first member 307 to which the grooving member 302 is fixed, a second member 308 that supports the first member 307 so that the vertical position can be adjusted, and a position adjustment of the second member 308 in the width direction K2. And a third member 309 that supports it. By dividing the first support 306L into the first member 307, the second member 308, and the third member 309, the configuration of the first support 306L can be facilitated.

  Further, the multi-film laying device 300 can adjust the vertical position of the film presser 303 (film presser) and the film presser 303 (film presser) that press the end of the multifilm F1 laid on the ridge R1. And a second support 346L that supports the position adjustment in the width direction K2. Thereby, the position of the film presser 303 (film pressing part) can be made to correspond to the position adjustment of the grooving member 302.

  The film presser 303 (film pressing portion) includes a first pressing position S1 that is a position for pressing the end of the multi-film F1 at the corner portion R4 between the upper surface R2 and the side surface R3 of the flange R1, and the corner portion R4 and the side surface. The position can be adjusted to a second pressing position S2, which is a position where the end of the multi-film F1 is pressed between the lower end of R3. Thereby, the position of the film presser 303 (film pressing portion) can be adjusted corresponding to the first groove cutting position P1 and the second groove cutting position P2 of the groove cutting member 302.

  In addition, the multi-film laying device 300 supports the support frame 26 and rolls between adjacent ridges R1 in the width direction K2 (bottom portion R5 of the groove between adjacent ridges R1) and a film presser 303 (film pressing portion). The support wheels 27L and 27R (gauge wheels) are arranged on the outer side K3 in the width direction and can press the end of the multi-film in the width direction K2. Thereby, support wheel 27L, 27R can be utilized as a member which presses the edge part of the width direction K2 of multifilm F1. Moreover, the multi-film laying apparatus 300 can be comprised compactly by arrange | positioning the support rings 27L and 27R to the width direction outer side K3 of the film presser 303 (film pressing part).

  The second support 346L also supports a first support member 356 that supports the film presser 303 (film pressing portion) so that the vertical position can be adjusted, and a first support member 356 that can adjust the position in the width direction K2. 2 support members 357. By separating the second support 346L into the first support member 356 and the second support member 357, the configuration of the second support 346L can be facilitated.

The multi-film laying apparatus 300 includes a roll support shaft 328 that supports the film roll 301 by penetrating in the axial direction. Thereby, the film roll 301 can be supported over an axial center direction, and it can prevent that the intermediate part of the film roll 301 curves toward the downward direction.
The first support body 306L includes a shaft support member 333 that supports the roll support shaft 328 so that the vertical position can be adjusted. Thereby, the height of the film roll 301 with respect to the collar R1 can be adjusted.

In this embodiment, the multi-film laying device 300 is provided in the working machine 4 that performs tilling, standing, and planting, but is not limited thereto. For example, the multi-film laying device may be a device that is attached to the traveling body alone. Further, the multi-film laying device 300 may be employed in a working machine that performs tilling and raising in one step and does not perform planting.
Next, the cover frame 400 that supports the cover ring 74 will be described in detail.

FIG. 38 shows a side view of the rear part of the transplantation unit 51A (51B). FIG. 39 shows the left cover ring 74AL (74BL) and the cover frame 400AL (400BL) in the transplant unit 51A (51B).
As shown in FIGS. 38 and 40, the frame support portion 73AL includes an upper wall 73a, a lower wall 73b positioned below the upper wall 73a, and a front wall 73c that connects front ends of the upper wall 73a and the lower wall. And have. As shown in FIG. 39, an adjustment groove 401a that is long in the width direction K2 is formed in the front wall 73c of the frame support portion 73AL. Below the adjustment groove 401a, an adjustment groove 401b long in the width direction K2 is formed in parallel. The frame support portion 73AR, the frame support portion 73BL, and the frame support portion 73BR are configured in the same manner as the frame support portion 73AL.

One cover ring 74 is supported by one cover frame 400. The covering soil frame 400AL, the covering soil frame 400AR, the covering soil frame 400BL, and the covering soil frame 400BR have the same structure. Therefore, in the following description, one covering soil frame 400 will be described.
First, an outline of the soil covering frame 400 will be described.

  As shown in FIGS. 38 and 39, the cover frame 400 includes a vertical support member 402 provided on the transplant frame 69A (69B), and the cover ring 74 can be positioned around the vertical support member 402 and transplanted. Adjustment is possible in the width direction K2 of the frame 69A (69B). The covering frame 400 includes a first frame 403 supported by the transplant frame 69A (69B) and a second frame 404 supported by the first frame 403. The first frame 403 includes a vertical support member 402. The second frame 404 is supported by the first frame 403 so that the position of the second frame 404 can be adjusted around the vertical support member 402. Further, the second frame 404 supports the cover ring 74.

Hereinafter, the soil covering frame 400 will be described in detail.
As shown in FIGS. 38 and 39, the first frame 403 connects the vertical support member 402, the bracket member 405 attached to the transplant frame 69A (69B), and the vertical support member 402 to the bracket member 405 so as to be movable up and down. A parallel link 406, a spring 407 that spans across the vertical support member 402 and the bracket member 405 and biases the cover ring 74 downward, and a second frame attachment portion 408 that attaches the second frame 404. The vertical support member 402 is disposed in front of the bracket member 405. The vertical support member 402 is configured by a member (vertically long member) that is long in the vertical direction (vertical direction).

  As shown in FIGS. 40 and 41, the vertical support member 402 includes a first wall 402a, a second wall 402b, and a third wall 402c. The first wall 402a and the second wall 402b are provided side by side in the width direction K2. The third wall 402c connects the front ends of the first wall 402a and the second wall 402b in the longitudinal direction. As shown in FIG. 38, a plurality of holes (first holes) 409 are formed in the first wall 402a at intervals in the vertical direction. A plurality of holes (second holes) 410 are also formed in the second wall 402b at intervals in the vertical direction. The same number of first holes 409 and second holes 410 are formed corresponding to the width direction K2. The first hole 409 and the second hole 410 corresponding to each other in the width direction K2 are formed concentrically.

  As shown in FIGS. 40 and 42, the bracket member 405 is attached to the frame support portion 73 so that the position of the bracket member 405 can be adjusted in the width direction K2. In other words, the transplant frame 69A (69B) has a frame support portion 73 for attaching the bracket member 405 so that the position of the bracket member 405 can be adjusted in the width direction K2. The bracket member 405 has one side wall 405a, another side wall 405b, a connecting wall 405c, and a regulating wall 405d. The one side wall 405a and the other side wall 405b are provided side by side in the width direction K2. The connecting wall 405c connects the rear ends of the one side wall 405a and the other side wall 405b. The connecting wall 405 c is superimposed on the front surface of the front wall 73 c of the frame support portion 73. The connecting wall 405c is attached to the frame support portion 73 by two fasteners 411 composed of bolts 411a and nuts 411b. Specifically, the bolt 411a passes through the adjustment grooves 401a and 401b and penetrates the connecting wall 405c. The nut 411b is screwed to the bolt 411a on the front side of the connecting wall 405c. By fastening the fastener 411, the bracket member 405 is fixed to the frame support portion 73 so as not to move. By loosening the fastener 411, the bracket member 405 can be moved to the frame support portion 73 in the width direction K2. As a result, the bracket member 405 (covering frame 400) is supported so that its position can be adjusted in the width direction K2 with respect to the frame support portion 73 (transplant frame 69A (69B)). By adjusting the position of the bracket member 405 in the width direction K2, the position of the covering frame 400 is adjusted in the width direction K2. Thereby, the position of the cover ring 74 is adjusted in the width direction K2. That is, the transplanter 3 includes a covering frame 74 that can be adjusted in the width direction of the transplant frame 69A (69B).

  In addition, the planting device 68A (68B) of the present embodiment swings the planting mechanisms 68AL and 68AR (68BL and 68BR) so that the planting tools 137AL and 137AR (137BL and 137BR) are transplanted into the transplant frame 69A (69B). ) In the width direction K2. By adjusting the position of the bracket member 405 (covering frame 400) in the width direction K2, the position of the cover rings 74AL, 74AR (74BL, 74BR) corresponds to the position change of the planting tools 137AL, 137AR (137BL, 137BR). Can be repositioned.

As shown in FIGS. 38 and 40, lower portions of the one side wall 405a and the other side wall 405b have an extending portion 405e formed to extend forward. The restriction wall 405d is provided over the extending portion 405e of the one side wall 405a and the other side wall 405b.
As shown in FIG. 40, the parallel link 406 is provided across the vertical support member 402 and the bracket member 405. The parallel link 406 includes an upper link 406U and a lower link 406D disposed below the upper link 406U. A cylindrical member (first cylinder) 412 is provided at the front end of the upper link 406U. A cylindrical member (second cylinder) 413 is also provided at the rear end of the upper link 406U. A cylindrical member (third cylinder) 414 is provided at the front end of the lower link 406D. A cylindrical member (fourth cylinder) 415 is also provided at the rear end of the lower link 406D.

  As shown in FIG. 41, the first cylinder 412 is disposed between the first wall 402a and the second wall 402b. The first link pin 416 is inserted through the first cylinder 412, the first hole 409 and the second hole 410. That is, the front end portion of the upper link 406U is pivotally supported (supported rotatably) by the vertical support member 402 via the first link pin 416. The first link pin 416 protrudes from the vertical support member 402 in one and the other in the width direction K2. A hooking portion (first hooking portion) 417 is provided at one end of the first link pin 416. A hooking portion (second hooking portion) 418 is provided at the other end portion of the first link pin 416.

  As shown in FIG. 42, the second cylinder 413 is disposed between the one side wall 405a and the other side wall 405b. A second link pin 419 is inserted through the second cylinder 413, the one side wall 405a, and the other side wall 405b. That is, the rear end portion of the upper link 406U is pivotally supported (supported rotatably) by the bracket member 405 via the second link pin 419. The second link pin 419 protrudes from the bracket member 405 in one direction and the other in the width direction K2. A hooking portion (third hooking portion) 420 is provided at one end of the second link pin 419. At the other end of the second link pin 419, a hooking portion (fourth hooking portion) 421 is provided.

  As shown in FIG. 41, the third cylinder 414 is disposed between the first wall 402a and the second wall 402b. The third link pin 422 is inserted through the third cylinder 414 and the first hole 409 and the second hole 410. That is, the front end portion of the lower link 406D is pivotally supported (supported rotatably) by the vertical support member 402 via the third link pin 422. One end of the third link pin 422 protrudes from the first wall 402a. One end of a fixed plate (first fixed plate) 423 is fixed to one end of the third link pin 422. The other end of the first fixing plate 423 is fixed to one end of the first link pin 416. A screw hole 424 is formed at the other end of the third link pin 422. A fixing bolt 425 is screwed into the screw hole 424. Accordingly, the first link pin 416, the third link pin 422, the first cylinder 412 and the third cylinder 414 are attached to the vertical support member 402.

  Further, by removing the fixing bolt 425 from the screw hole 424, the first link pin 416 can be removed from the first tube 412, the first hole 409, and the second hole 410, and the third link pin 422 can be removed from the third tube. 414 and the first hole can be removed. That is, the first link pin 416, the third link pin 422, the first cylinder 412 and the third cylinder 414 can be removed from the vertical support member 402. Further, with the first link pin 416, the third link pin 422, the first cylinder 412 and the third cylinder 414 removed, the vertical support member 402 is moved up and down, and the changed position is changed to the vertical support member 402. By attaching the first link pin 416, the third link pin 422, the first tube 412 and the third tube 414, the vertical support member 402 can be vertically adjusted with respect to the parallel link 406. In other words, the parallel link 406 is attached to the vertical support member 402 so that the vertical position can be adjusted. By adjusting the vertical support member 402 in the vertical direction, the height of the covering ring 74 can be changed corresponding to the change in the height of the transplant frame 69A (69B).

  As shown in FIG. 42, the fourth cylinder 415 is disposed between the one side wall 405a and the other side wall 405b. A fourth link pin 426 is inserted through the fourth cylinder 415, the one side wall 405a, and the other side wall 405b. In other words, the rear end portion of the lower link 406D is pivotally supported (supported rotatably) by the bracket member 405 via the fourth link pin 426. The fourth link pin 426 protrudes from the bracket member 405 to one side and the other side in the width direction K2. A hook part (fifth hook part) 427 is provided at one end of the fourth link pin 426. A hooking portion (sixth hooking portion) 428 is provided at the other end of the fourth link pin 426.

  As shown in FIG. 42, an attachment pin 429 is provided between the second link pin 419 and the fourth link pin 426. The mounting pin 429 is inserted through the one side wall 405a and the other side wall 405b. A screw hole 430 is formed at one end of the mounting pin 429. A fixing bolt 431 is screwed into the screw hole 430. The fixing bolt 431 passes through the one side wall 405a and is screwed into the screw hole 430. A middle part of the fixing plate (second fixing plate) 432 is fixed to the other end of the mounting pin 429. One end of the second fixing plate 432 is fixed to the other end of the second link pin 419. The other end of the second fixing plate 432 is fixed to the other end of the fourth link pin 426. Thereby, the second link pin 419 and the fourth link pin 426 are attached to the bracket member 405.

As described above, one soil covering frame 400 supports one soil covering ring 74 so as to be movable up and down. Thus, one of the two cover rings 74 corresponding to one planting mechanism 68 does not float from the ridge R1, and the two cover rings 74 can always follow the ridge R1. it can. A plurality of soil covering rings may be supported by one soil covering frame.
As shown in FIG. 40, the lower link 406D abuts against the restriction wall 405d, so that the downward movement of the vertical support member 402 with respect to the bracket member 405 is restricted.

  As shown in FIGS. 43 and 44, the spring 407 is formed of a coil spring. The spring 407 includes a first spring 407L disposed on one side of the vertical support member 402 and a second spring 407R disposed on the other side of the vertical support member 402. One end of the first spring 407L is hooked on the first hooking portion 417 (see FIG. 43). The other end of the first spring 407L is selectively hooked to the third hook portion 420 or the fifth hook portion 427. In the illustrated example, it is hooked on the fifth hooking portion 427 (see FIG. 44). One end of the second spring 407R is hooked on the second hooking portion 418 (see FIG. 43). The other end of the second spring 407R is selectively hooked to the fourth hook portion 421 or the sixth hook portion 428. In the illustrated example, it is hooked on the sixth hooking portion 428 (see FIG. 44). The cover ring 74 is urged downward by the urging force of the spring 407. In other words, the spring 407 applies a covering pressure to the covering ring 74.

  Further, the urging force can be changed by selectively hooking the other end of the first spring 407L to the third hook portion 420 or the fifth hook portion 427. The biasing force can also be changed by selectively hooking the other end of the second spring 407R to the fourth hooking portion 421 or the sixth hooking portion 428. In the present embodiment, the urging force of the spring 407 can be changed in three stages. The first stage biasing force is a biasing force in a state where the other end of the first spring 407L is hooked on the third hooking portion 420 and the other end of the second spring 407R is hooked on the fourth hooking portion 421. The second stage urging force is the urging force in a state where the other end of the first spring 407L is hooked on the third hooking portion 420 and the other end of the second spring 407R is hooked on the sixth hooking portion 428, or the first spring. The biasing force is such that the other end of 407L is hooked on the fifth hooking portion 427 and the other end of the second spring 407R is hooked on the fourth hooking portion 421. The biasing force in the third stage is a biasing force in a state where the other end of the first spring 407L is hooked on the fifth hooking portion 427 and the other end of the second spring 407R is hooked on the sixth hooking portion 428.

Further, when changing the height of the transplant frame 69A (69B), the height of the covering ring 74 can be changed by adjusting the vertical support member 402 in the vertical direction, so the height of the transplant frame 69A (69B) can be changed. It is not necessary to change the soil pressure setting corresponding to.
As shown in FIGS. 45A and 45B, the second frame mounting portion 408 is formed of a plate material whose plate surface faces up and down, and is fixed to the lower end of the vertical support member 402. The second frame attachment portion 408 extends from the vertical support member 402 to one side and the other side. A first guide groove 433 is formed on one side of the vertical support member 402 in the second frame 404 member. A second guide groove 434 is formed on the other side of the vertical support member 402 in the second frame 404 member. The first guide groove 433 and the second guide groove 434 are formed in an arc shape centering on a vertical line O1 located between the first wall 402a and the second wall 402b. The first guide groove 433 and the second guide groove 434 are formed so as to penetrate the second frame attachment portion 408 in the plate thickness direction.

  As shown in FIGS. 38 and 39, the second frame 404 includes a first support bracket 436 that supports the cover ring 74 and a second support bracket 437 that supports the first support bracket 436. The second frame 404 has a support shaft 438 provided on the first support bracket 436. The support shaft 438 is a shaft that rotatably supports the cover ring 74. That is, the first support bracket 436 supports the cover ring 74 in a rotatable manner. Further, the second frame 404 has a mounting bracket 439 (attachment portion) that is attached to the vertical support member 402. The mounting bracket 439 is provided in front of the second support bracket 437 and in front of the support shaft 438.

  45A and 45B, the mounting bracket 439 has an upper wall 439a, a front wall 439b extending downward from the front end of the upper wall 439a, and a rear wall 439c extending downward from the rear end of the upper wall 439a. . The upper wall 439a is superimposed on the lower surface of the second frame attachment portion 408. A first bolt hole 440 corresponding to the first guide groove 433 and a second bolt hole 441 corresponding to the second guide groove 434 are formed in the upper wall 439a. A bolt 442 is inserted into the first guide groove 433 and the first bolt hole 440 from above, and a nut 443 is screwed into the bolt 442 on the lower surface side of the upper wall 439a. The bolt 444 is also inserted into the second guide groove 434 and the second bolt hole 441 from above. A nut 445 is screwed to the bolt 444 on the lower surface side of the upper wall 439a (see FIG. 45A). As a result, the first frame 403 is attached to the second frame 404. By loosening the bolts 442 and 444 and the nuts 443 and 445, the second frame 404 (rear part) can swing around the vertical line O1. Further, the first frame 403 is fixed to the second frame 404 by tightening the bolts 442 and 444 and the nuts 443 and 445 at a position where the first frame 403 is swung. That is, the position of the cover ring 74 can be adjusted around the vertical support member 402 together with the first frame 403. In other words, the first frame 403 includes the attachment portion 439 that is attached around the vertical support member 402 so that the position thereof can be adjusted. The covering ring 74 swings around the vertical line O1 by adjusting the position around the vertical support member 402 (see FIG. 47). That is, the angle of the cover ring 74 can be adjusted around the vertical support member 402. The second frame attachment portion 408, the attachment bracket 439, the bolts 442 and 444, and the nuts 443 and 445 constitute an angle adjustment portion 446 that adjusts the angle of the soil covering ring 74. Note that the position of the cover ring 74 in the width direction K <b> 2 is also changed by the position adjustment around the vertical support member 402.

By adjusting the position of the cover ring 74 around the vertical support member 402 (angle adjustment) and adjusting the position of the cover ring 74 along the frame support portion 73 in the width direction K2 of the transplant frame 69A (69B), The position of the earth covering ring 74 can be finely adjusted. Thereby, the position of the covering ring 74 can be made into an appropriate position with respect to the seedling planted.
As shown in FIG. 47, the first support bracket 436 is made of a plate material, and has one side wall 436a, another side wall 436b, a front wall 436c, and a rear wall 436d. The one side wall 436a and the other side wall 436b are provided side by side in the width direction K2. The front wall 436c extends from the front end of the other side wall 436b to the front end of the one side wall 436a, and connects the front ends of the one side wall 436a and the other side wall 436b. The rear wall 436d extends from the rear end of the one side wall 436a to the rear end of the other side wall 436b, and connects the rear ends of the one side wall 436a and the other side wall 436b. A cover ring 74 is disposed between the one side wall 436a and the other side wall 436b. A shaft boss is provided at the center of the cover ring 74. A spindle 438 is rotatably inserted through the shaft boss, one side wall 436a, and the other side wall 436b. As a result, the cover ring 74 is rotatably supported by the first support bracket 436 (first frame 403).

As shown in FIGS. 38 and 39, the second support bracket 437 is made of a pipe material, and extends downward from the front end portion of the upper flange portion 437a and the upper flange portion 437a extending in the front-rear direction below the vertical support member 402. It has a front collar part 437b that extends and a rear collar part 437c that extends downward from the rear end part of the upper collar part 437a. A mounting bracket 439 is fixed to the front portion of the upper collar portion 437a.
As shown in FIG. 46, a lower portion of the front collar portion 437b is formed with a front support portion 437d formed by crushing a pipe material. The front support portion 437d is superimposed on the center portion of the front surface of the front wall 436c, and is fixed to the front wall 436c by a first fastening member 448 including a bolt 448a (front and rear shaft) and a nut 448b. Further, a rear support portion 437e formed by crushing the pipe material is formed in the rear collar portion 437c. The rear support portion 437e is overlapped with the center portion of the rear surface of the rear wall 436d, and is fixed to the rear wall 436d by a second fastening member 449 including a bolt 449a (front and rear shaft) and a nut 449b. The bolts 448a and 449a of the first fastening member 448 and the second fastening member 449 have a common axial center O2 in the front-rear direction.

  By loosening the first fastening member 448 and the second fastening member 449, the second support bracket 437 and the cover ring 74 are rotatable about the front and rear axes (about the axis O2) with respect to the first support bracket 436. . By tightening the first fastening member 448 and the second fastening member 449, the second support bracket 437 and the cover ring 74 are made non-rotatable around the front and rear axes with respect to the first support bracket 436. Thus, the second support bracket 437 and the cover ring 74 are supported by the first support bracket 436 so that the position of the second support bracket 437 and the earthen ring 74 can be adjusted around the front-rear axis (axis O2). In other words, the cover ring 74 can be adjusted in angle with respect to the vertical direction (vertical direction) by adjusting the position about the front-rear axis (axis O2) (see the virtual line in FIG. 39).

As shown in FIGS. 46 and 47, a scraper 450 for dropping mud adhering to the outer periphery of the soil covering ring 74 is attached to the rear support portion 437e. The scraper 450 includes a fixing portion 450a that is fixed to the rear support portion 437e by the second fastening member 449, an action portion 450b that contacts the outer periphery of the cover ring 74, and a rotation stop portion 450c that contacts the other side wall 436b.
The transplanter 3 of this embodiment has the following effects.

  The transplanter 3 is a planting device 68A (68B) for planting seedlings in the field H1, a transplant frame 69A (69B) for supporting the planting device 68A (68B), and seedlings planted by the planting device 68A (68B). It has a covering ring 74 that brings soil from the side, and a vertical support member 402 provided on the transplantation frame 69A (69B). The position of the covering ring 74 can be adjusted around the vertical support member 402 and the transplantation frame 69A (69B) And a soil covering frame 400 that can be adjusted in the width direction K2. That is, the soil covering ring 74 can perform position adjustment around the vertical support member 402 (angle adjustment around the vertical line O1) and position adjustment in the width direction K2 of the transplant frame 69A (69B). Thereby, the position of the earth covering ring 74 can be finely adjusted.

  The soil covering frame 400 is a first frame 403 including a vertical support member 402 and a second frame 403 supported by the first frame 403 so that its position can be adjusted around the vertical support member 402 and supporting a soil covering ring 74. Frame 404. The structure of the soil covering frame 400 can be simplified by dividing the soil covering frame 400 into the first frame 403 supported by the transplant frame 69A (69B) and the second frame 404 supporting the soil covering ring 74.

The second frame 404 includes a first support bracket 436 that rotatably supports the cover ring 74 and a second support bracket 437 that supports the first support bracket 436 so that the position of the first support bracket 436 can be adjusted around the front-rear axis. As a result, the angle of the cover ring 74 can be adjusted around the front-rear axis, and the position of the cover ring 74 can be set to an appropriate position.
The second frame 404 is provided on the first support bracket 436 and rotatably supports the cover ring 74, and is provided in front of the support shaft 438 at the front portion of the second support bracket 437. In addition, the vertical support member 402 includes an attachment portion that is attached around the vertical support member 402 so as to be positionally adjustable. According to this, by adjusting the position of the second support bracket 437 around the vertical support member 402, the cover ring 74 swings around the vertical support member 402, and the cover ring 74 is moved around the vertical support member 402. The angle can be adjusted.

  The first frame 403 includes a bracket member 405 attached to the transplant frame 69A (69B), and a parallel link 406 that connects the vertical support member 402 to the bracket member 405 so as to be movable up and down. Thereby, the earth covering ring 74 can be made to follow a grounding surface. Further, since the cover ring 74 is moved up and down by the parallel link 406, space saving can be achieved.

Further, the transplant frame 69A (69B) has a frame support portion 73 for attaching the bracket member 405 so that the position of the bracket member 405 can be adjusted in the width direction K2. Thereby, the position of the cover ring 74 together with the cover frame 400 can be adjusted in the width direction K2.
The transplant frame 69A (69B) can be adjusted in the vertical position, and the parallel link 406 is attached to the vertical support member 402 so that the vertical position can be adjusted. Thereby, the height of the covering ring 74 can be changed corresponding to the height change of the transplant frame 69A (69B).

The soil covering frame 400 includes a spring 407 that is stretched over the vertical support member 402 and the bracket member 405 and biases the soil covering ring 74 downward. As a result, the soil covering pressure can be applied to the soil covering ring 74.
The parallel link 406 includes an upper link 406U pivotally supported by the vertical support member 402 via the first link pin 416 and pivotally supported by the bracket member 405 via the second link pin 419, and below the upper link 406U. And a lower link 406D pivotally supported by the vertical support member 402 via the third link pin 422 and pivotally supported by the bracket member 405 via the fourth link pin 426, and the first link pin 416 The third link pin 422 and the fourth link pin 426 are provided with a hooking portion for hooking the spring 407. Thereby, the urging | biasing force with respect to the earth covering ring | wheel 74 can be adjusted to a several step.

  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 2 ground working machine (rotary tiller)
3 transplanter 4 work machine 42R side chair (first side chair)
42L side chair (second side chair)
68A Planting device 68B Planting device 72A Seedling supply device (first seedling supply device)
72B seedling supply device (second seedling supply device)
147 Supply cup 148 Supply cup 149 Transfer mechanism 150 First rotator 151 Second rotator 152 Rope 214 Posture change mechanism 215 Biasing mechanism 216 Holding mechanism 231R Front chair (first front chair)
231L front chair (second front chair)
233 Operation part 280L Seedling part 280R Seedling part P Path

Claims (13)

A ground work machine mounted on the rear of the traveling body and performing work on the field;
A seedling supply device that is arranged behind the ground work machine and has a transfer mechanism that transfers a large number of supply cups that store seedlings back and forth along a long loop-shaped path;
A planting device provided below the seedling supply device and for planting the seedling supplied from the seedling supply device in a field;
A front chair that is provided above the ground work machine and in front of the seedling supply device and on which an operator sits;
Working machine equipped with.   The working machine according to claim 1, further comprising a side chair provided on one side in the width direction of the traveling body of the seedling supply device and on which an operator sits. The seedling supply device
A first rotating body disposed behind the ground work machine and rotatably supported;
A second rotator disposed behind the first rotator and rotatably supported;
A loop-like cord body stretched between the first rotating body and the second rotating body,
The work machine according to claim 1 or 2, wherein the front chair is provided in front of the first rotating body. The seedling supply device has a first seedling supply device arranged on one side in the width direction, and a second seedling supply device arranged on the other side in the width direction,
The operation according to claim 2, wherein the front chair includes a first front chair provided in front of the first seedling supply device and a second front chair provided in front of the second seedling supply device. Machine.   The side chair includes a first side chair provided on one side in the width direction of the first seedling supply device and a second side chair provided on the other side in the width direction of the second seedling supply device. The working machine according to claim 4, comprising: A posture changing mechanism for changing the posture of the side chair;
The posture changing mechanism can change the posture of the side chair into a first posture in which a seat surface of the side chair is substantially horizontal and a second posture inclined forward with respect to the first posture. The working machine according to any one of claims 2, 4, and 5. The posture changing mechanism is
An urging mechanism for assisting a change operation from the first posture to the second posture of the side chair;
A holding mechanism for holding the posture of the side chair in the second posture;
The work machine according to claim 6 provided with.   The working machine according to claim 2, further comprising a position adjustment mechanism capable of adjusting a position of the side chair in the width direction. On the one side in the width direction of the ground work machine, a seedling placement unit for placing seedlings to be supplied to the supply cup,
The work machine according to any one of claims 1 to 8, wherein the front chair is disposed on the other side in the width direction of the seedling holder. Above the ground work machine, provided with an operation unit for performing a setting operation related to planting seedlings,
The work machine according to claim 9, wherein the front chair is disposed between the seedling holder and the operation unit.   The working machine according to claim 1, wherein the ground working machine is a rotary tiller. A seedling supply device that has a transfer mechanism that is arranged behind a ground working machine that performs operations on a farm field and that transports a large number of supply cups that store seedlings along a long loop-shaped path back and forth;
A planting device provided below the seedling supply device and for planting the seedling supplied from the seedling supply device in a field;
A front chair that is provided above the ground work machine and in front of the seedling supply device and on which an operator sits;
Transplanter equipped with.   The transplanter according to claim 12, further comprising a side chair provided on one side in the width direction of the traveling body of the seedling supply device and on which an operator sits.

Images