CN107535148B - Transplanting machine and working machine - Google Patents

Abstract

The invention provides a working machine and a transplanter which can efficiently supply seedlings to a seedling supply device with a compact structure. A work machine (4) is provided with: a ground-working machine (2) which is mounted to the rear part of the traveling body (1) and works a field; seedling supply devices (72A, 72B) which are arranged behind the ground working machine (2) and have a conveying mechanism (149) for conveying a plurality of supply cups (147, 148) for accommodating seedlings along an annular path (P) which is long in the front-back direction; transplanting devices (68A, 68B) which are provided below the seedling supply devices (72A, 72B) and transplant the seedlings supplied from the seedling supply devices into a field; and front chairs (231L, 231R) which are arranged above the ground working machine (2) and in front of the seedling supply devices (72A, 72B) and are used for seating of workers.

Description

Transplanting machine and working machine

Technical Field

The present invention relates to a transplanter for transplanting seedlings into a field and a working machine provided with the transplanter.

Background

Conventionally, a transplantation machine disclosed in patent document 1 is known.

The work machine disclosed in patent document 1 is a single-row transplanting work machine, and includes a traveling body, a rotary cultivator, and a transplanter, and can perform cultivation and seedling transplanting while traveling with 1 machine. The transplanter includes a transplanting device for transplanting seedlings and a seedling supply device for supplying seedlings to the transplanting device.

The seedling supply device has a plurality of seedling tubes (seedling holders) which are conveyed along a path in a ring shape in a plan view. Further, a work table is provided from above the rotary cultivator to above the transplanter, and a seedling placing section is provided at the front of the work table. An operator carrying part is arranged at the rear part of the seedling carrying part and at the side of the seedling supply device, and the seedlings carried on the seedling carrying part can be supplied to the seedling cylinder of the seedling supply device under the state that the operator sits on the operator carrying part.

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 10-271902

In the above-described transplanter, the operator mounting portion is provided on the side of the seedling feeder, and thus the operation of feeding seedlings to the seedling feeder can be efficiently performed from the side. However, in the market, creation of a transplantation machine is expected as follows: the seedling supply device can efficiently supply seedlings to the seedling supply device with a more compact structure.

Disclosure of Invention

Accordingly, an object of the present invention is to provide a transplanter capable of efficiently performing a seedling supply operation to a seedling supply device with a compact configuration, and a working machine including the transplanter.

A work machine according to an aspect of the present invention includes: a ground working machine which is mounted to a rear portion of the traveling body and works a field; a seedling supply device which is arranged behind the ground working machine and has a conveying mechanism for conveying a plurality of supply cups for accommodating seedlings along a long annular path; a transplanting device which is provided below the seedling supplying device and transplants the seedlings supplied from the seedling supplying device into a field; and a front chair provided above the ground working machine and in front of the seedling supply device, and adapted to allow workers to sit thereon.

A transplantation machine according to an aspect of the present invention includes: a seedling supply device which is arranged behind a ground working machine for working a field and has a conveying mechanism for conveying a plurality of supply cups for accommodating seedlings along a long annular path; a transplanting device which is provided below the seedling supplying device and transplants the seedlings supplied from the seedling supplying device into a field; and a front chair provided above the ground working machine and in front of the seedling supply device, and adapted to allow workers to sit thereon.

According to the above-described working machine, the feeding work of the seedlings to the seedling feeder can be performed efficiently with a compact configuration.

Drawings

Fig. 1 is a side view of a work machine.

Fig. 2 is a schematic plan view of the ground working machine (rotary tiller) and the transplanter.

Fig. 3 is a schematic rear view of the transplanter.

FIG. 4 is a side view showing the coupling relationship between the rotary machine frame and the transplanter frame.

Fig. 5 is a plan view showing the periphery of the front chair.

Figure 6 is a side view of the front chair.

Fig. 7 is a plan view showing the position of the worker sitting on the front chair and the side chairs.

Fig. 8 is a plan view of the position adjustment mechanism and the posture changing mechanism.

Fig. 9 is a rear view showing the periphery of the side chair.

Fig. 10 is an explanatory diagram illustrating an operation of the position adjustment mechanism.

Fig. 11 is a side view of the posture changing mechanism.

Fig. 12 is a plan view of the posture changing mechanism.

Fig. 13 is an explanatory diagram illustrating an operation of the posture changing mechanism.

Fig. 14 is an explanatory diagram illustrating an operation of the posture changing mechanism.

Fig. 15 is an explanatory diagram illustrating an operation of the posture changing mechanism.

Fig. 16 is a schematic configuration diagram showing a power transmission system.

Fig. 17 is a side view of the graft frame and the transplanting device.

Figure 18 is a top view of a graft frame.

Figure 19 is a rear view of the graft frame.

Fig. 20 is a side view of the transplanting tool stopping mechanism.

Fig. 21 is a plan view of the transplanting tool stopping mechanism.

Fig. 22 is a plan view of the transplanting apparatus.

Fig. 23 is a schematic plan view of the seedling feeder.

Fig. 24 is a rear sectional view of the seedling feeder.

FIG. 25 is a layout view of the lid of the supply cup.

Description of the reference numerals

1 traveling body

2 ground working machine (Rotary cultivator)

3 transplanting machine

4 working machine

42R side chair (1 st side chair)

42L side chair (2 nd side chair)

68A transplanting device

68B transplanting device

72A seedling feeder (No. 1 seedling feeder)

72B seedling feeder (No. 2 seedling feeder)

147 supply cup

148 supply cup

149 conveying mechanism

150 st rotating body

151 nd 2 nd rotary body

152 cable body

214 posture changing mechanism

215 force applying mechanism

216 holding mechanism

231R front chair (No. 1 front chair)

231L front chair (2 nd front chair)

233 operating part

280L seedling carrying part

280R seedling carrying part

P path

Detailed Description

Embodiments of the present invention will be described below with reference to the drawings.

Fig. 1 shows a working machine 4 capable of traveling and transplanting seedlings together with ground work (such as tilling). The work machine 4 includes: a traveling body 1, a ground-engaging work machine 2 mounted on the rear portion of the traveling body 1, and a transplanting machine 3 mounted on the ground-engaging work machine 2.

In the present embodiment, a tractor as a traveling vehicle is exemplified as the traveling body 1. In addition, a rotary tiller is exemplified as the ground working machine 2. The traveling body 1 is not limited to a tractor, and may be another traveling vehicle. The ground working machine 2 is not limited to a rotary tiller, and may be any machine that works a field. For example, the ground working machine 2 may be a ridge-making machine that makes ridges in a field. The rotary tiller 2 is exemplified by a side-drive rotary tiller, but may be a center-drive rotary tiller.

Fig. 1 shows a side view of a work machine 4. In the embodiment, unless otherwise specified, the front side (left side in fig. 1) of the driver seated in the driver seat 5 of the tractor 1 is referred to as the front side, the rear side (right side in fig. 1) of the driver is referred to as the rear side, the left side (near side in fig. 1) of the driver is referred to as the left side, and the right side (far side in fig. 1) of the driver is referred to as the right side. The horizontal direction K2 (see fig. 2), which is a direction perpendicular to the front-rear direction K1 (see fig. 1) of the tractor 1, will be described as the width direction.

The direction indicated by the arrow K3 in fig. 2 is the outward direction in the width direction, and the direction indicated by the arrow K4 in fig. 2 is the inward direction in the width direction. The widthwise outward direction is a direction from the widthwise central portion of the tractor 1 toward the right or left portion. In other words, the widthwise outer direction is the widthwise direction K2 and is a direction away from the widthwise central portion of the tractor 1. The widthwise inward direction means a direction opposite to the widthwise outward direction. In other words, the widthwise inner direction is the widthwise direction K2 and is a direction toward the widthwise center portion of the tractor 1.

The tractor (traveling structure) 1 includes a vehicle body 6, front wheels (not shown) mounted on a front portion of the vehicle body 6, and rear wheels 7 mounted on a rear portion of the vehicle body 6. The vehicle body 6 is configured by directly coupling an engine, a clutch housing having a clutch, a transmission having a transmission, a differential case having a differential device, and the like. The driver seat 5 is provided at the rear of the vehicle body 6. A steering wheel 8 is provided in front of the driver seat 5. A PTO shaft 22 for power take-off is provided at the rear of the vehicle body 6.

As shown in fig. 1, the rotary tiller 2 is mounted to the rear of the tractor 1 so as to be able to ascend and descend via a three-point link mechanism 9 and a coupling frame 10. A three-point link mechanism 9 is mounted to the rear of the vehicle body 6. The link frame 10 is provided at the rear of the three-point link mechanism 9. The rotary tiller 2 is attached to the connecting frame 10.

As shown in fig. 1 and 2, the rotary tiller 2 includes a rotary machine frame (work machine frame) 11. The rotary machine frame 11 has a gear case 12, a left support arm 13L, a right support arm 13R, a transmission case 14, and a side frame 15. The gear case 12 is located at a substantially central portion in the width direction K2 of the rotary tiller 2. The support arm 13L protrudes leftward from the left portion of the gear case 12. The support arm 13R protrudes rightward from the right portion of the gear case 12. The upper portion of the transmission case 14 is attached to the left end portion of the support arm 13L. The upper portion of the side frame 15 is attached to the right end portion of the support arm 13R. A rotary shaft 16 is provided between the lower portion of the transmission case 14 and the lower portion of the side frame 15. A plurality of tilling claws 17 are fixed to the outer periphery of the rotary shaft 16 via a bracket. The rotary shaft 16 and the tilling claw 17 form a tilling portion 18.

The upper part of the tilling part 18 is covered with an upper cover 19A. The rear of the tilling portion 18 is covered with a rear cover 19B. The upper end of the rear cover 19B is pivotally supported by the upper cover 19A, and the rear cover 19B is vertically swingable. The rear cover 19B is biased downward by the biasing device 20. The biasing device 20 biases 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 via the joint. The power transmitted to the intake shaft 21 is transmitted to the chain transmission member in the transmission case 14 via the gear mechanism in the gear case 12 and the shaft in the support arm 13L. The rotary shaft 16 is driven by the power transmitted to the chain transmission member. The rotary shaft 16 rotates in the direction of arrow a1 in fig. 1. When the rotary shaft 16 rotates in the a1 direction, the tilling claws 17 plough the soil and throw the rearward rear cover 19B. The soil tilled by the tilling section 18 is leveled by the rear cover 19B to form the upper surface of the ridge. The sides of the ridges are formed by ridgers 23L, 23R discussed later.

The rotary machine frame 11 has a left support rod 24L, a right support rod 24R, and a column 25. The support rod 24L is fixed to the support arm 13L. The support rod 24R is fixed to the support arm 13R. The column 25 is fixed to the gear case 12.

The transplanter 3 mounted behind the rotary tiller 2 has: a support frame 26 pivotally supported by the support rods 24L and 24R, a left depth wheel (support wheel) 27L, a right depth wheel (support wheel) 27R, a 2 nd height changing device 28 pivotally supported by the column 25, a 2 nd support frame 232 (see fig. 5) provided between the left swing arm 31L and the right swing arm 31R, and a lower support 234 (see fig. 4) for supporting a front portion of the 2 nd support frame 232 from below.

The support frame 26 is a frame member that supports the depth wheels 27L, 27R. The depth wheels 27L, 27R are members for setting the height of the rotary tiller 2 (ground working machine). In other words, the depth wheels 27L, 27R are members that set the tilling depth of the rotary tiller 2. The 2 nd height changing device 28 is a device that changes the setting of the depth wheels 27L, 27R by swinging the support frame 26 up and down.

As shown in fig. 2, 4, and 5, the support frame 26 includes a front frame 29 pivotally supported by the support rods 24L and 24R, and a rear frame 30 connected to the rear portion of the front frame 29.

The front frame 29 includes a left swing arm 31L, a right swing arm 31R, an upper link 32U, a lower link 32D, a left vertical frame 33L, a right vertical frame 33R, a left link 202L, a right link 202R, a left support member 224L, and a right support member 224R. The swing arm 31L, the swing arm 31R, the connecting rod 32U, the connecting rod 32D, the vertical frame members 33L, 33R, and the connecting rods 202L, 202R are formed of a tube material.

The front end of the swing arm 31L is pivotally supported by the support rod 24L via a pivot shaft inserted through the pivot support plate 201L. The swing arm 31L projects rearward from the support arm 13L. The front end of the swing arm 31R is pivotally supported by the support rod 24R via a pivot shaft inserted through the pivot support plate 201 RL. The swing arm 31R protrudes rearward from the support arm 13R. The link rod 32U links the rear end of the swing arm 31L and the rear end of the swing arm 31R to each other. The upper portion of the left vertical frame 33L is fixed to the left portion of the swing arm 31L, and the left vertical frame 33L extends downward from the left portion of the swing arm 31L. The upper portion of the right vertical frame member 33R is fixed to the right portion of the swing arm 31R, and the right vertical frame member 33R extends downward from the right portion of the swing arm 31R. The left link 202L has a front portion fixed to a lower portion of the vertical frame 33L, and the left link 202L extends rearward from the lower portion of the vertical frame 33L. The right link 202R has a front portion fixed to a lower portion of the vertical frame member 33R, and the right link 202R extends rearward from the lower portion of the vertical frame member 33R.

The front frame 29 is vertically swingable about pivot portions at the front ends of the swing arms 31L and 31R.

As shown in fig. 5 and 6, the support members 224L and 224R support chairs 231L and 231R for the operator (for the operator to sit on), respectively. Hereinafter, the chairs 231L, 231R will be referred to as front chairs for convenience. The right front chair 231R is referred to as a1 st front chair, and the left front chair 231L is referred to as a 2 nd front chair.

The left support member 224L supports the 2 nd front chair 231L from below. The support member 224L has a support rod 225, a1 st longitudinal cylinder 226, a 2 nd longitudinal cylinder 298, a rear member 227A, a front member 227B, and an intermediate member 227C. The right end of the support rod 225 is fixed to a middle portion of the swing arm 31L in the front-rear direction K1, and the support rod 225 extends leftward from the middle portion. The 1 st vertical tube 226 is fixed to the left end of the support rod 225 and extends upward. A 2 nd longitudinal tube 298 is inserted into and fixed to the 1 st longitudinal tube 226. The 2 nd vertical tube 298 protrudes upward from the upper end of the 1 st vertical tube 226. An intermediate member 227C is fixed to the upper end of the 2 nd vertical tube 298. The intermediate member 227C extends in the front-rear direction K1, and is provided with a front member 227B at the front end and a rear member 227A at the rear end. The front member 227B and the rear member 227A extend in the width direction K2 in parallel with each other at a spacing in the front-rear direction. The lower ends of the springs 228 are mounted 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 a1 st plate portion 229A and a 2 nd plate portion 229B. The 1 st plate portion 229A extends in the width direction K2 and is fixed to the front bottom surface of the 2 nd front chair 231L by bolts 252. The 2 nd plate part 229B extends downward from both ends (right and left ends) in the width direction K2 of the 1 st plate part 229A. The 1 st plate part 229A is pivotally supported by the front member 227B by a pin 230. Thereby, the pivoting plate 229 can pivot rearward (in a direction toward which an operator sitting in the 2 nd front chair 231L faces) about the pin 230 as a fulcrum (center). As shown by the phantom line (two-dot chain line) in fig. 6, the 2 nd front chair 231L moves integrally with the rotating plate 229 and tilts rearward (in the direction toward which the operator sitting on the 2 nd front chair 231L faces) as the rotating plate 229 rotates rearward. A recess 231a is provided in the rear of the bottom surface of the 2 nd front chair 231L. The upper end of the spring 228 is fitted into the recess 231 a. This suppresses propagation of vibration generated by driving the ground working machine 1 to the chair 231L.

The right support member 224R supports a right chair 231R (hereinafter referred to as a 2 nd front chair) from below. The support member 224L is configured to be symmetrical with the support member 224L with respect to 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 a middle portion of the swing arm 31L in the front-rear direction K1, and the support rod 225 of the support member 224R extends leftward from the middle portion. The other structure of the support member 224R is the same as that of the support member 224L. The 2 nd front chair 231R is fixed to the 1 st plate portion of the support member 224R, and is tilted rearward (in a direction toward which a worker sitting in the 2 nd front chair 231R faces).

As shown in fig. 7, the 1 st front chair 231R is located in front of the 1 st seedling feeding device 72A discussed later. Specifically, the 1 st front chair 231R is located on a front extension line L1 of a center line in the width direction of the path P of the 1 st seedling feeder 72A, which will be described later. Thereby, the operator H can sit toward the 1 st seedling feeder 72A (rearward). The 2 nd front chair 231L is located in front of the 2 nd seedling supplying device 72B discussed later. Specifically, the 2 nd front chair 231L is located on a front extension line L2 of a center line in the width direction of the path P of the 2 nd seedling feeder 72B, which will be described later. Thereby, the operator H can sit toward the 2 nd seedling feeder 72B (rearward).

As shown in fig. 2 and 4, the rear frame 30 is connected to the rear portions of the connecting rods 202L and 202R constituting the front frame 29. The rear frame 30 includes a center 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, 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. The lateral frame member 34C, the lateral frame member 34L, the lateral frame member 34R, the longitudinal frame member 35L, the longitudinal frame member 35R, the wheel frame 36L, the wheel frame 36R, the front member 204L, the front member 204R, the rear member 205L, the rear member 205R, the connecting rod 206L, and the connecting rod 206R are formed of a tube material.

As shown in fig. 2, the cross frame member 34C is located rearward of the front frame 29 and extends in the width direction K2. The cross frame member 34C is coupled to the rear end of the connecting rod 202L and the rear end of the connecting rod 202R. The cross frame member 34L is inserted into and fixed to the left end of the cross frame member 34C, and projects leftward from the left end of the cross frame member 34C. The cross frame member 34R is inserted and fixed to the right end of the cross frame member 34C, and protrudes rightward from the right end of the cross frame member 34C. The front portion of the front member 204L is fixed to the left end of the cross frame 34L, and the front member 204L extends rearward from the left end of the cross frame 34L. The front portion of the front member 204R is fixed to the right end of the horizontal frame 34R, and the front member 204R extends rearward from the right end of the horizontal frame 34R. The upper end of the vertical frame 35L is fixed to the left portion of the horizontal frame 34C, and the vertical frame 35L extends downward from the left portion. The upper end of the vertical frame member 35R is fixed to the right portion of the horizontal frame member 34C, and the vertical frame member 35R extends downward from the right portion.

As shown in fig. 2, 4, and 8, the wheel frame 36L has a front member 37L and a rear member 38L. The front portion of the front member 37L is fixed to the lower portion of the vertical frame 35L, and the front member 37L extends rightward from the lower portion of the vertical frame 35L. The front end of the rear member 38L is fixed to the left end of the front member 37L, and the rear member 38L extends rearward from the left end. The wheel frame 36R has a front member 37R and a rear member 38R. The front portion of the front member 37R is fixed to the lower portion of the vertical frame 35R, and the front member 37R extends leftward from the lower portion of the vertical frame 35R. The front end of the rear member 38R is fixed to the right end of the front member 37R, and the rear member 38R extends rearward from the right end.

A depth wheel (support wheel) 27L is rotatably attached to a rear portion of the wheel frame 36L. A right depth wheel (support wheel) 27R is rotatably attached to a rear portion of the wheel frame 36L.

A ridger (ridger) 23L is disposed in front of the depth wheel 27L. A ridger (ridger) 23R is also arranged in front of the depth wheel 27R. The ridger 23L is mounted on the lower portion of the vertical frame member 35L. The ridger 23R is mounted to the lower portion of the vertical frame member 35R. The ridger 23L forms the left side of the ridge. The ridger 23R forms the right side of the ridge.

The lower portion of the connecting rod 206L is fixed to a longitudinal middle portion of the wheel frame 36L (rear member 38L), and the upper portion is fixed to a longitudinal middle portion of the front member 204L. Thereby, the connecting rod 206L connects the wheel frame 36L and the front member 204L. The lower portion of the connecting rod 206R is fixed to a longitudinal middle portion of the wheel frame 36R (rear member 38R), and the upper portion is fixed to a longitudinal middle portion of the front member 204R. Thereby, the connecting rod 206R connects the wheel frame 36R and the front member 204R.

The front end of the rear member 205L is pivotally supported by the rear end of the front member 204L, and the rear member 205L extends rearward from the rear end of the front member 204L. A lateral 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 lateral shaft member 207L are supported by the support member 208L. Thereby, the rear member 205L can rotate with respect to the front member 204L about the horizontal shaft member 207L as a fulcrum (center). The front end of the rear member 205R is pivotally supported by the rear end of the front member 204R, and the rear member 205R extends rearward from the rear end of the front member 204R. With the same configuration as the rear member 205L, the rear member 205R can rotate relative to the front member 204R.

A protruding member 40L protruding outward in the width direction K3 is provided at the rear portion of the rear member 205L. A protruding member 40R protruding outward in the width direction K3 is also provided at the rear portion of the rear member 205R. As shown in fig. 9, a plurality of through holes 210 are provided in the projecting member 40L at intervals in the projecting direction (width direction K2). Similarly to the projecting member 40L, a plurality of screw holes (not shown) are provided in the projecting member 40R so as to be aligned at intervals in the projecting direction. The number of the through holes 210 is not limited to two or more, but in the present embodiment, 3 through holes 210 are provided. For convenience of explanation, the screw hole located innermost in the width direction K2 is referred to as an inner through hole 210A, the screw hole located outermost in the width direction K2 is referred to as an outer through hole 210C, and the screw hole located between the inner through hole 210A and the outer through hole 210C is referred to as an intermediate through hole 210B.

The cylinder 209L is movably fitted around the outer periphery of the projecting member 40L in the width direction K2 along the projecting member 40L. The cylinder 209R is movably fitted around the outer periphery of the projecting member 40R in the width direction K2 along the projecting member 40R. In fig. 9, an enlarged cross section of the a-a portion is shown within an imaginary line circle.

The column 41L is fixed to the cylinder 209L. The support 41L extends upward from the cylinder 209L. The column 41R is fixed to the cylinder 209R. The support 41R extends upward from the cylinder 209R. Chairs 42L, 42R for the operator (for the operator to sit on) are provided at the upper end of the support 41L and the upper end of the support 41R, respectively. Hereinafter, the chairs 42L, 42R are referred to as side chairs 42L, 42R for convenience. The chair 42R is referred to as a1 st side chair 42R, and the chair 42L is referred to as a 2 nd side chair 42L.

As shown in fig. 7, the 1 st side chair 42R is located on the width direction K2 side (right side) of the 1 st seedling feeder 72A to be discussed later, and the operator H can sit toward the 1 st seedling feeder 72A side (left side). The 2 nd side chair 42L is located on the other side (left side) in the width direction K2 of the 2 nd seedling feeder 72B to be discussed later, and the operator H can sit on the 2 nd seedling feeder 72B side (right side).

With the same configuration as the front chairs 231L, 231R, the side chairs 42L, 42R can tilt forward (in the direction in which the operator sitting on the side chairs 42L, 42R faces).

As shown in fig. 9, a through hole 211 is formed in the cylinder 209L. Further, although not shown, a through hole 211 is also formed in the cylinder 209R, similarly to the cylinder 209L. The through holes 211 and 210 are overlapped with each other, and bolts or the like (not shown) are inserted into and fixed to the through holes 211, whereby the tubular bodies 209L and 209R can be positioned and fixed with respect to the protruding members 40L and 40R.

The projecting members 40L, 40R, the tubular bodies 209L, 209R, the through hole 210, the through hole 211, the bolts, and the like described above constitute a position adjusting mechanism capable of adjusting the positions of the 1 st side chair 42R and the 2 nd side chair 42L in the width direction K2. Hereinafter, the operation of the position adjusting mechanism will be described by taking the case of adjusting the position of the 2 nd side chair 42L as an example.

First, when the through hole 211 of the cylinder 209L and the inner through hole 210A of the projecting member 40L are overlapped and the cylinder 209L is fixed to the projecting member 40L by a screw, the 2 nd side chair 42L is located at the innermost position in the width direction (referred to as the 1 st position) (see the left view of fig. 10). Second, when the through hole 211 and the outer through hole 210C are overlapped and the tubular body 209L is fixed to the projecting member 40L, the 2 nd side seat 42L is located at the outermost position in the width direction (referred to as the 2 nd position) (see the right drawing of fig. 10). Third, when the through hole 211 and the middle through hole 210B are overlapped and the cylinder 209L is fixed to the protruding member 40L, the 2 nd side chair 42L is located between the 1 st position and the 2 nd position.

A left bottom plate 212L is fixed to a lower portion of the left support 41L. The bottom plate 212L extends inward in the width direction K2 from the upper portion of the support column 41L. A bottom plate 212L is fixed to a lower portion of the right pillar 41R. The bottom plates 212L, 212R are positioned inward K4 in the width direction of the support columns 41L, 41R. In the present embodiment, the bottom plates 212L and 212R are rectangular in plan view, with the long sides facing the front-rear direction K1 and the short sides facing the width direction K2. The bottom plates 212L and 212R function as leg rests when the operator sits on the side chairs 42L and 42R, and function to protect the feet of the operator against the rear support wheels 213L and 213R, which will be described later. Bottom plate 212L is fixed to cylinder 209L via support 41L. Therefore, when the cylinder 209L is moved in the width direction K2 along the protruding member 40L, the bottom plate 212L is also moved in the width direction K2 together with the cylinder 209L. Similarly, the bottom plate 212R also moves in the width direction K2 together with the cylinder 209R. Therefore, even if the positions of the side chairs 42L, 42R are changed, the positional relationship between the side chairs 42L, 42R and the bottom plates 212L, 212R is not changed, and the above-described function is maintained. The bottom plates 212L and 212R may be fixed to positions movable together with the cylindrical bodies 209L and 209R, or may be directly fixed to the cylindrical bodies 209L and 209R.

An upper portion of the rod 217L is fixed to a front portion of the rear member 205L. The rod 217L extends downward from the rear member 205L. Similarly, a rod (not shown) is fixed to a front portion of the rear member 205R, and extends downward. At the lower part of these rods, the tip end part of a later-discussed urging mechanism 215 is mounted.

An upper portion of the wheel lever 39L is fixed to the rear member 205L at a position rearward. The wheel lever 39L is positioned behind the lever 217L and the support 41L, and extends downward from the rear member 205L. The upper portion of the wheel lever 39R is also fixed to the rear member 205R at a position rearward. The wheel lever 39R extends downward from the rear member 205R. A rear support wheel 213L is rotatably attached to a lower portion of the wheel lever 39L. The rear support wheels 213L are located behind the depth wheel (support wheel) 27L and below the 2 nd side chair 42L. A rear support wheel 213R is rotatably attached to a lower portion of the wheel lever 39R. The rear support wheels 213R are located behind the depth wheel (support wheel) 27R and below the 1 st side chair 42R. The rear support wheels 213L, 213R support the weight of the operator sitting on the side chairs 42L, 42R.

As shown in fig. 5, the 2 nd 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 2 nd support frame 232 supports an operation portion 233, which will be discussed later. The 2 nd support frame 232 includes a left support frame member 232L, a right support frame member 232R, a1 st link frame member 232A, and a 2 nd link frame member 232B. The support frame members 232L, 232R extend in the front-rear direction K1 in parallel with each other. The front end of the support frame 232L is fixed to the left portion of the column 25 and extends rearward. The front end of the support frame 232R is fixed to the right portion of the column 25 and extends rearward. The 1 st link frame 232A extends in the width direction K2, and connects a middle portion in the front-rear direction of the support frame 232L and a middle portion in the front-rear direction of the support frame 232R. The 2 nd linking frame member 232B extends in the width direction K2, and links the rear end of the support frame member 232L and the rear end of the support frame member 232R.

The operation unit 233 has a housing 233A, an operation member 233B, and a control device (not shown) housed inside the housing 233A. In the present embodiment, the housing 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 of the case 233A in the width direction K2 is set to be larger than the distance between the inner end of the support frame 232L and the inner end of the support frame 232R. Thereby, the lower portion of the housing 233A is supported by the upper surface of the support frame 232L and the upper surface of the support frame 232R. The rear portion of the housing 233A abuts the front portion of the bracket main body 60, which is discussed later. The operating member 233B is provided on the upper surface of the housing 233A. The operation member 233B is a member for performing setting operations relating to the transplantation of seedlings. In the present embodiment, the operation member 233B is a rotary knob, and a plurality of (4) operation members are provided in a row in the front-rear direction. The operation member 233B is, for example, a knob for inter-plant switching setting, a knob for seedling evacuation setting, or the like. However, the number, type, and arrangement of the operation members 233B can be changed as appropriate. The control device performs control of settings related to the transplantation of seedlings based on the operation of the operation member 223B.

The operation unit 233 is disposed between the 1 st front chair 231R and the 2 nd front chair 231L. The operation unit 233 is disposed forward of the center of the seating surfaces of the 1 st front chair 231R and the 2 nd front chair 231L. Accordingly, the operator sitting on the 1 st and 2 nd front chairs 231R and 231L can perform the operation by the operation unit 233 by extending his or her hand forward in the width direction while sitting, and thus the operability is very good.

As shown in fig. 2, 4, and 11 to 15, the transplanter 3 of the present embodiment includes a posture changing mechanism 214 that changes the posture of the side chairs 42L, 42R.

The posture changing mechanism 214 is capable of changing the postures of the side chairs 42L, 42R to a1 st posture (see fig. 4) in which the seating surfaces 42a of the side chairs 42L, 42R are substantially horizontal, and a 2 nd posture (see fig. 14) inclined forward with respect to the 1 st posture (the left hand side of the operator sitting in the side chair 42L, and the right hand side of the operator sitting in the side chair 42R). In the 2 nd posture, the seating surfaces 42a of the side chairs 42L, 42R are substantially vertical (substantially perpendicular to the floor surface). Specifically, in the 2 nd 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). By changing the posture of the side chairs 42L, 42R to the 2 nd posture when the side chairs 42L, 42R are not used, the length of the transplanter 3 in the front-rear direction K1 can be shortened. When the ground working machine (rotary tiller) 2 is raised in a state where the operator is not seated on the side chairs 42L, 42R, the side chairs 42L, 42R are automatically folded (to the 2 nd posture). When the ground working machine 2 is raised while the operator is seated in the side chairs 42L, 42R, the rear member 205L is pivoted about the horizontal shaft member 207L with respect to the front member 204L so that the seating surfaces of the side chairs 42L, 42R are maintained substantially horizontal.

The configuration and operation of the posture changing mechanism 214 that changes the posture of the 2 nd side chair 42L, which is the left side chair, will be described below. The configuration and operation of the posture changing mechanism for changing the posture of the 1 st side chair 42R are the same as those of the posture changing mechanism 214 for changing the posture of the 2 nd side chair 42L, and therefore, the description thereof is 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 urging mechanism 215 assists the force necessary for the operation when the operator performs the operation of changing the posture of the 2 nd side chair 42L from the 1 st posture to the 2 nd posture. In the case of the present embodiment, the urging mechanism 215 is a shock absorber constituted by a hydraulic cylinder. The buffer 215 has a force in the direction of elongation.

The buffer 215 assists the operation of changing the posture of the 2 nd side chair 42L. The base end portion of the buffer 215 is attached to the connecting rod 206L. The front end of the buffer 215 is attached to the lower portion of the rod 217L. The urging force of the shock absorber 215 assists a required force when the operator performs an operation of pivoting the rear member 205L upward about the horizontal shaft member 207 as a fulcrum (center) (an operation of bringing the state of fig. 14 from the state of fig. 4).

As shown in fig. 11, the holding mechanism 216 holds the 2 nd side chair 42L in the 2 nd posture. The holding mechanism 216L includes a support lever 218, a pivot 219, a locking piece 220, a locking pin 221, a spring 222, and an operating member 223. The support rod 218 is fixed to the rear end of the front member 204L and extends upward. The pivot 219 is mounted to an upper portion of the support rod 218 and extends in the width direction K2. The locking piece 220 is fixed to the pivot 219 at its proximal end side, and has an arc-shaped notch 220a into which the locking pin 221 can be fitted at its distal end side. The locking piece 220 can rotate 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 engaged with a pin 299 projecting from the rear portion of the front member 204L, and the other end is engaged with a hole 220b provided in the engaging piece 220. The spring 222 applies a biasing force to the locking piece 219 so as to rotate downward (clockwise in fig. 11) about the pivot 219 as a fulcrum (center). The operation member 223 is fixed to the base end side of the locking piece 220. The operating member 223 is a member that is gripped by the operator when the operator performs an operation of rotating the locking piece 220 about the pivot 219 as a fulcrum.

The operation of the holding mechanism 216 will be described.

First, the operator changes the posture of the 2 nd side chair 42L from the 1 st posture to the 2 nd posture using the posture changing mechanism 214 described above. In the state where the 2 nd side chair 42L is in the 2 nd posture, the operator grips the operating member 223 and rotates the locking piece 220 in the clockwise direction (the direction of arrow a in fig. 13 and 15), and locks the notch 220a of the locking piece 220 to the locking pin 221. The left side of fig. 13 and 15 shows the state before locking, and the right side of fig. 14 and 15 shows the state after locking. The notch 220a of the locking piece 220 is locked to the locking pin 221, and the rear member 205L is prevented from rotating downward about the horizontal shaft member 207L as a fulcrum, so that the 2 nd side chair 42L is held in the 2 nd posture. Further, since the locking piece 222 is biased downward by the spring 222, the locking of the locking pin 221 by the notch 220a is not released unless the operator performs an operation of rotating the locking piece 222 upward against the biasing force of the spring 222. Therefore, the 2 nd side chair 42L can be reliably held in the 2 nd posture.

Next, the migration units 51A and 51B will be explained.

First, the schematic configuration of the migration units 51A and 51B will be described.

As shown in fig. 2, 3 and 16, the 1 st transplantation unit 51A is disposed at the right portion of the transplanter 3. The 1 st transplanting unit 51A includes a transplanting frame (also referred to as a1 st transplanting frame) 69A, a1 st transmission shaft 70A, an electric motor (prime mover) 71, a transplanting device (also referred to as a1 st transplanting device) 68A, a seedling supplying device (also referred to as a1 st seedling supplying device) 72A, and a plurality of soil covering wheels 74A. The 1 st graft frame 69A is detachably attached to the right portion of the tool bar (Japanese: ツールバー) 49. The 1 st transplanting device 68A, the 1 st seedling feeder 72A, and the plurality of soil covering wheels 74A are provided to the 1 st transplanting frame 69A.

The 2 nd transplantation unit 51B is a transplantation unit provided in parallel to the 1 st transplantation unit 51A in the width direction K2, and is disposed at the left part of the transplanter 3. The 2 nd transplanting unit 51B has a transplanting frame (also referred to as a 2 nd transplanting frame) 69B, a 2 nd driving shaft 70B, a transplanting device (also referred to as a 2 nd transplanting device) 68B, a seedling supplying device (also referred to as a 2 nd seedling supplying device) 72A, and a plurality of soil covering wheels 74B. The 2 nd transplantation frame 69B is detachably attached to the left portion of the tool bar 49. The 2 nd transplanting device 68B, the 2 nd seedling supplying device 72A, and the plurality of soil covering wheels 74B are provided to the 2 nd transplanting frame 69B.

The transplanter frame 75 is composed of a1 st attaching frame 48L, a 2 nd attaching frame 48R, a tool bar 49, a1 st transplanting frame 69A, and a 2 nd transplanting frame 69B. The transplanter frame 75 is mounted to be movable up and down with respect to the rotary tiller 2 (ground working machine).

Next, the transplanting devices 68A and 68B will be described. First, the 1 st transplanting device 68A, which is a transplanting device of the 1 st transplanting unit 51A, will be described.

As shown in fig. 22, the 1 st transplanting device 68A has a plurality of (two in the present embodiment) transplanting mechanisms 68AL, 68 AR. Hereinafter, transplanting mechanism 68AL is referred to as a1 st transplanting mechanism 68AL, and transplanting mechanism 68AR is referred to as a 2 nd transplanting mechanism 68 AR. The 1 st transplanting mechanism 68AL is a transplanting mechanism located on the left side. The 2 nd transplanting mechanism 68AR is a transplanting mechanism located on the right side. The 1 st transplanting mechanism 68AL and the 2 nd transplanting mechanism 68AR are arranged in the width direction K2. The 1 st transplanting mechanism 68AL and the 2 nd transplanting mechanism 68AR are disposed at different positions in the front-rear direction K1. That is, the 2 nd transplanting mechanism 68AR is attached to the transplanting frames 69A, 69B in parallel with the 1 st transplanting mechanism 68AL and at a position different from the 1 st transplanting mechanism 68AL in the front-rear direction. In the present embodiment, the 2 nd transplanting mechanism 68AR is disposed rearward of the 1 st transplanting mechanism 68AL, but the 2 nd transplanting mechanism 68AR may be disposed forward of the 1 st transplanting mechanism 68 AL.

As shown in fig. 17 and 22, the 1 st transplanting mechanism 68AL includes a transplanting tool 137, a support 138, and a lifting device 139. The 2 nd transplanting mechanism 68AR includes a transplanting tool 137, a support 138, and a lifting device 139, as in the 1 st transplanting mechanism 68 AL. Hereinafter, the transplanting tool 137 in the 1 st transplanting mechanism 68AL may be referred to as a1 st transplanting tool 137AL, and the transplanting tool 137 in the 2 nd transplanting mechanism 68AR may be referred to as a 2 nd transplanting tool 137 AR. The lifting device 139 in the 1 st transplanting mechanism 68AL may be referred to as a1 st lifting device 139AL, and the lifting device 139 in the 2 nd transplanting mechanism 68AR may be referred to as a 2 nd lifting device 139 AR.

The transplanting tool 137 (the 1 st transplanting tool 137AL, the 2 nd transplanting tool 137AR) is a member for transplanting seedlings into a ridge (field). The transplanting tool 137 has a beak shape with its tip facing downward, and includes a front structure 140 and a rear structure 141. The transplanting tool 137 is openable and closable by the front structure 140 and the rear structure 141 being separated from and approaching to each other in the front-rear direction K1. In addition, the transplanting tool 137 can supply the seedlings from above and can house the seedlings therein in a closed state. In addition, the transplanting tool 137 can drop and discharge the seedling downward in the opened state.

As shown in fig. 19 and 22, the front portion of the support body 138 of the 1 st transplanting mechanism 68AL is fixed to the 1 st coupling member 241 and the 2 nd coupling member 242 of the transplanting frame 78 by bolts. The front portion of the support body 138 in the 2 nd transplanting mechanism 68AR is fixed to the 3 rd and 4 th coupling members 243 and 244 of the transplanting frame 78 by bolts. Here, the 3 rd and 4 th coupling members 243 and 244 are located behind the 1 st and 2 nd coupling members 241 and 242. Therefore, support body 138 in the 2 nd transplanting mechanism 68AR is located behind support body 138 in the 1 st transplanting mechanism 68 AL. Thereby, the 2 nd transplanting mechanism 68AR is positioned rearward of the 1 st transplanting mechanism 68 AL. As shown in fig. 17, the amount of the shift in the forward and backward directions of the 1 st and 2 nd transplanting mechanisms 68AL and 68AR is set to such an extent that the 1 st and 2 nd transplanting tools 137AL and 137AR do not overlap when the 1 st and 2 nd transplanting tools 137AL and 137AR are positioned at the bottom dead center in side view. The mounting position of each support 138 in the width direction K2 can be changed with respect to the transplanting frame 78. By changing the mounting position of the support 138, the row spacing of the transplanted seedlings (the spacing in the width direction K2 of the transplanted seedlings) can be changed.

As shown in fig. 22, the two transplanting mechanisms 68AL and 68AR are supported in the width direction by the left vertical member (the 1 st vertical member 92 and the 3 rd vertical member 94), the central vertical member (the 3 rd vertical member 94 and the 5 th vertical member 96), and the right vertical member (the 4 th vertical member 95). That is, the central vertical members (the 3 rd vertical member 94, the 5 th vertical member 96) support both of the two transplanting mechanisms 68AL, 68AR in the width direction. Thereby, the two transplanting mechanisms (the 1 st transplanting mechanism 68AL and the 2 nd transplanting mechanism 68AR) are supported at 3 positions (left, center, right) in the width direction.

As shown in fig. 17 and 22, in the 1 st transplanting unit 51A, the 22 nd sprocket 271 is supported by the support body 138 of the 1 st transplanting mechanism 68AL by the support shaft 142. The 23 rd sprocket 274 is supported by the support 138 of the 2 nd transplanting mechanism 68AR by the support shaft 142.

The lifting device 139 (the 1 st lifting device 139AL and the 2 nd lifting device 139AR) supports the transplanting tool 137 and lifts the transplanting tool 137. Specifically, the 1 st lifting device 139AL is a device for lifting the 1 st transplanting tool 137AL, and the 2 nd lifting device 139AR is a device for lifting the 2 nd transplanting tool 137 AR. The lifting device 139 is attached to the support 138. The lifting device 139 has a1 st housing 143, a 2 nd housing 144, and a mounting member 145. The 1 st housing 143 is rotatably supported by the support 138 via a support shaft 142. The 2 nd housing 144 is rotatably supported on the free end side of the 1 st housing 143. The mounting member 145 is supported by the 2 nd housing 144. The transplanting tool 137 is supported by the mounting member 145. In addition, a seedling guide 146 is provided on the mounting member 145 above the transplanting tool 137. The seedling guide 146 is formed in a cylindrical shape gradually narrowing downward, and guides the seedlings supplied from above to the transplanting tool 137. The mounting member 145 is biased upward by a spring.

A power transmission mechanism is provided in the 1 st case 143 and the 2 nd case 144 such that when the 1 st case 143 is rotated by the support shaft 142, the 2 nd case 144 is rotated in a direction opposite to the 1 st case 143 in conjunction with the rotation of the 1 st case 143. Further, since the 1 st case 143 and the 2 nd case 144 rotate, the mounting member 145 moves up and down in parallel, and the transplanting tool 137 moves up and down.

At the position after the lift (top dead center position), the seedlings fall down to the transplanting tool 137 and are supplied to the transplanting tool 137. At this time, the transplanting tool 137 is in a closed state, and the seedling is held inside the transplanting tool 137. Thereafter, the transplanting tool 137 is lowered while holding the seedling, and the lower part of the transplanting tool 137 is pushed into the ridge (field). The transplanting tool 137 is opened when it is flushed into the ridges to form planting holes at the ridges, and the seedlings are discharged to the planting holes (transplanted).

As described above, the 1 st transplanting mechanism 68AL and the 2 nd transplanting mechanism 68AR are arranged in the width direction K2 and are arranged at different positions in the front-rear direction K1. Thus, the seedlings were planted in two rows in a zigzag manner in the ridges by one transplanting unit (seedlings adjacent to each other in the width direction K2 were transplanted with one of the seedlings being shifted in the front-rear direction with respect to the other).

Furthermore, by arranging 1 st transplanting mechanism 68AL and 2 nd transplanting mechanism 68AR at different positions in front-rear direction K1 and supporting 1 st transplanting mechanism 68AL and 2 nd transplanting mechanism 68AR at 3 positions in the width direction, 1 st transplanting mechanism 68AL and 2 nd transplanting mechanism 68AR can be arranged close to each other in width direction K2. Therefore, the seedlings with the narrow inter-row distance can be transplanted. Further, since the width (length in the width direction K2) of the transplantation frame 69A to which the 1 st transplantation mechanism 68AL and the 2 nd transplantation mechanism 68AR are attached can be shortened, the working machine 4 can be compactly configured in the width direction K2.

In the present embodiment, the left and right transplanting tools 137 (the 1 st transplanting tool 137AL and the 2 nd transplanting tool 137AR) are raised and lowered simultaneously. When the transplanting tool 137 is stopped, the left and right transplanting tools 137 are stopped at the top dead center position. In order to perform the inter-plant control, the transplanting tool 137 must be stopped, but there is a case where a problem occurs when the transplanting tool 137 is stopped at an intermediate position in the vertical movement range. For example, when transplanting seedlings of vegetables having hard stems such as tomatoes and peppers, if the transplanting tool 137 is stopped at an intermediate position in the vertical movement range, the transplanting tool 137 may collide with the stem of the transplanted seedling and the seedling may fall down. In the present embodiment, since the 1 st and 2 nd transplanting tools 137AL and 137AR are shifted forward and backward and the staggered row planting is realized by raising and lowering the 1 st and 2 nd transplanting tools 137AL and 137AR simultaneously, the transplanting tools 137 (the 1 st and 2 nd transplanting tools 137AL and 137AR) can be stopped at the top dead center position. This prevents the seedlings from falling down.

A mechanism for stopping the 1 st and 2 nd transplanting tools 137AL and 137AR to the top dead center position (hereinafter, referred to as a transplanting tool stopping mechanism 285) will be described.

As shown in fig. 20 and 21, the transplanting device stopping mechanism 285 includes an attachment member 286, a support lever 287, nuts 288U and 288D, a swing member 289, a support shaft 290, a roller 291, a spring 292, and a cam 293. The mounting member 286 is fixed near the front end of the center member 247A. The mounting member 286 has a through hole through which the support rod 287 is inserted in the vertical direction. The support lever 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 to the threaded portion 287a of the support rod 287. Nut 288U abuts the upper surface of mounting member 286, and nut 288D abuts the lower surface of mounting member 286. The support lever 287 is attached to the mounting member 286 by clamping the mounting member 286 by 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 to change the vertical position of the support lever 287 relative to the mounting member 286. By changing the vertical position of the locking hole 287b, the biasing force of the spring 292 can be adjusted. One end side (front end side) of the swinging member 289 is pivotally supported by the bracket 258A via a support shaft 290. The swing member 289 is swingable up and down about a support shaft 290 (center). A locking hole 289a is provided on the other side (rear end side) of the swing member 289. A roller 291 is rotatably mounted between one end and the other end of the swing member 289. One end side of the spring 292 is engaged with the engaging hole 287b of the support lever 287, and the other end side of the spring 292 is engaged with the engaging hole 289a of the swing member 289. The cam 293 is attached to the 2 nd output shaft 253 and rotates together with the 2 nd output shaft 253. The cam 293 has an arc-shaped recess 293a on the outer periphery. The biasing force of the spring 292 applies a force (see arrow a in fig. 20) to the swing member 289 to swing upward about the support shaft 290 as a fulcrum (center). Due to this force, the roller 291 is pressed against the outer periphery of the cam 293.

When the electric motor 71 is stopped, the roller 291 is rotated in the direction of arrow B in fig. 20 while being pressed against the outer periphery of the cam 293 by the biasing force of the spring 292. As the roller 291 rotates, the cam 293 rotates in the direction opposite to the roller 291 (the direction of arrow C in fig. 20). By the roller 291 and the cam 293 rotating in opposite directions to each other, the roller 291 moves along the outer periphery of the cam 293. After moving along the outer periphery of the cam 293, the roller 291 fits into the recess 293a and stops moving. By stopping the movement of the roller 291, the rotation of the cam 293 is stopped. Thereby, the rotation of the 2 nd output shaft 253 is stopped, and the movement of the 1 st transplanting tool 137AL is stopped. Therefore, by appropriately setting the relationship between the position of the recess 293a (the position of the outer periphery of the cam 293) and the vertical positions of the 1 st transplanting tool 137AL and the 2 nd transplanting tool 137AR in advance, the 1 st transplanting tool 137AL and the 2 nd transplanting tool 137AR can be stopped at the top dead center position.

As shown in fig. 20, the 1 st transplanting device 68A includes an elevation assisting mechanism 294 for assisting an elevation operation when the 1 st transplanting tool 137AL and the 2 nd transplanting tool 137AR are raised and lowered. The lift assist mechanism 294 has a rotating plate 295 and a spring 296. The rotation plate 295 is mounted to the 1 st drive shaft 70A and rotates together with the 1 st drive shaft 70A. One end side of the spring 296 is engaged with the rotating plate 295, and the other end side of the spring 296 is engaged with the center member 247A. The spring 296 expands and contracts in accordance with the ascending and descending of the 1 st and 2 nd transplanting tools 137AL and 137AR caused by the rotation of the 1 st driving shaft 70A. Specifically, the spring 296 is extended when the 1 st and 2 nd transplanting tools 137AL and 137AR are lowered, and is shortened when the 1 st and 2 nd transplanting tools 137AL and 137AR are raised. Therefore, when the 1 st and 2 nd transplanting tools 137AL and 137AR are lowered, the raising operation thereof is assisted by the biasing force (pulling force) of the spring 296. Thus, when the plant is lowered, the force (gravity) assisting the lowering operation by its own weight acts on the 1 st and 2 nd transplanting tools 137AL and 137AR, and when the plant is raised, the force assisting the raising operation by the biasing force of the spring 296 acts on the 1 st and 2 nd transplanting tools 137AL and 137AR, so that the raising and lowering operation is smoothly performed.

Next, a 2 nd transplanting device 68B, which is a transplanting device of the 2 nd transplanting unit 51B, will be described.

As shown in fig. 22, the 2 nd transplanting device 68B also has a plurality of (two in the present embodiment) transplanting mechanisms 68BL, 68BR, as in the 1 st transplanting device 68A. The transplanting mechanisms 68BL, 68BR are arranged in the width direction K2. Hereinafter, the transplanting mechanism 68BL is referred to as a1 st transplanting mechanism 68BL, and the transplanting mechanism 68BR is referred to as a 2 nd transplanting mechanism 68 BR. The 1 st transplanting mechanism 68BL is a transplanting mechanism located on the left side. The 2 nd transplanting mechanism 68BR is a transplanting mechanism located on the right side. The 1 st transplanting mechanism 68BL and the 2 nd transplanting mechanism 68BR are arranged in the width direction K2. The 1 st transplanting mechanism 68BL and the 2 nd transplanting mechanism 68BR are disposed at different positions in the front-rear direction K1. In the present embodiment, the 2 nd transplanting mechanism 68BR is disposed behind the 1 st transplanting mechanism 68BL, but the 2 nd transplanting mechanism 68BR may be disposed in front of the 1 st transplanting mechanism 68 BL.

Like the 1 st transplanting mechanism 68AL, the 1 st transplanting mechanism 68BL includes a transplanting tool 137 (1 st transplanting tool 137BL), a support 138, and a lifting device 139 (1 st lifting device 139 BL). Like the 2 nd transplanting mechanism 68AR, the 2 nd transplanting mechanism 68BR includes a transplanting tool 137 (the 2 nd transplanting tool 137BR), a support 138, and a lifting device 139 (the 2 nd lifting device 139 BR).

The transplanting tool 137, the support 138, and the lifting device 139 are the same as those described above, and therefore, the description thereof is omitted. Further, similarly to the 1 st transplanting device 68A, the 2 nd transplanting device 68B also has a transplanting tool stopping mechanism 285 and an elevation assisting mechanism 294. The above-described transplanting device stopping mechanism 285 and the elevation assisting mechanism 294 are the same as those described above, and therefore, the explanation thereof is omitted.

As shown in fig. 17 and 22, in the 2 nd transplanting unit 51B, the 24 th sprocket 277 is supported by a support shaft 142 on a support 138 of the 1 st transplanting mechanism 68 BL. The 24 th sprocket 276 is supported by the support 138 of the 2 nd transplanting mechanism 68BR by the support shaft 142.

Next, the seedling feeder 72A, 72B will be explained. First, the 1 st seedling feeder 72A as a seedling feeder of the 1 st transplant unit 51A will be explained.

The 1 st seedling feeder 72A is disposed above the 1 st transplanting device 68A. The seedling is dropped by the 1 st seedling feeder 72A into the transplanting tool 137 (the 1 st transplanting device 68A) located therebelow and fed into the transplanting tool 137. The 1 st seedling feeder 72A is supported via a frame above the 2 nd frame 82, the 3 rd frame 83, the 8 th frame 88, and the 1 st cross member 97 shown in fig. 18.

As shown in fig. 23, the 1 st seedling feeder 72A has a plurality of feeder cups 147, 148 into which seedlings are put. The plurality of supply cups 147, 148 includes a plurality of 1 st supply cups 147 and a plurality of 2 nd supply cups 148. The 1 st and 2 nd supply cups 147 and 148 are arranged along a long annular path P. Specifically, the 1 st and 2 nd supply cups 147 and 148 are arranged in a ring shape so as to have a long oval shape in the front-rear direction K1 in a plan view. The 1 st and 2 nd supply cups 147 and 148 are alternately arranged along the oblong arrangement path P.

The 1 st and 2 nd supply cups 147 and 148 are intermittently conveyed in the arrow Y direction by the conveying mechanism 149 along a long annular path (oblong arrangement path) P. The conveying mechanism 149 includes a1 st rotating body 150, a 2 nd rotating body 151, and a rope body 152. The 1 st rotating body 150 and the 2 nd rotating body 151 are constituted by sprockets. The cable 152 is formed of a chain in a ring shape. The 1 st rotating body 150 and the 2 nd rotating body 151 are supported by a frame supporting the 1 st seedling feeder 72A so as to be rotatable about a vertical axis (an axis in the vertical direction). The 1 st rotating body 150 is positioned in front of the conveying mechanism 149, and the 2 nd rotating body 151 is disposed behind the 1 st rotating body 150. The cable 152 is wound over the entire 1 st and 2 nd rotating bodies 150 and 151. The 1 st and 2 nd supply cups 147 and 148 are disposed along the cable 152 on the outer circumferential side of the cable 152.

A drive sprocket 153 is provided below the 1 st rotating body 150. The drive sprocket 153 is integrally rotatably coupled via the 1 st rotating body 150 and the 3 rd drive shaft 154. The 1 st rotating body 150 rotates by transmitting power to the driving sprocket 153 via the 9 th chain 155.

In the 1 st transplantation unit 51A, power is transmitted from the 4 th sprocket 117 to the drive sprocket 153 via the 9 th chain 155. In the 2 nd transplantation unit 51B, power is transmitted from the 13 th sprocket 126 to the drive sprocket 153 via the 9 th chain 155.

As shown in fig. 24, the 1 st supply cup 147 includes a receiving portion 156, a mounting portion 157, and a cover 158. Similarly, the 2 nd supply cup 148 also has a housing portion 160, a mounting portion 161, and a cover 162. The housing portions 156 and 160 are portions for housing the seedlings to be thrown therein, and are formed of a cylindrical body having an open upper and lower side. The attachment portions 157 and 161 are portions attached to the cord body 152. The covers 158 and 162 are members for closing the bottoms of the receiving portions 156 and 160. Covers 158 and 162 are pivotally supported by hinges 159 at the lower portions of receiving portions 156 and 160, and lower end openings of receiving portions 156 and 160 are openable and closable. The seedlings can be held in the housing portions 156 and 160 by closing the covers 158 and 162, and the seedlings can be discharged downward from the housing portions 156 and 160 by opening the covers 158 and 162.

As shown in fig. 25, the lid 158 of the 1 st supply cup 147 has a1 st engagement portion 163. The lid 162 of the 2 nd supply cup 148 has a 2 nd engaging portion 164. The 1 st engaging portion 163 protrudes toward the inner peripheral side of the arrangement path (the cable 152) of the supply cups 147, 148. The 2 nd engaging portion 164 protrudes to the outer peripheral side of the arrangement path (the cable 152) of the supply cups 147, 148.

The 1 st supply cup 147 opens the lid 158 on the left side of the 1 st rotating body 150 and the 2 nd rotating body 151 (one side in the width direction of the 1 st rotating body 150 and the 2 nd rotating body 151). The position indicated by reference numeral X1 is the 1 st open position (the open position on one side in the width direction of the 1 st rotating body 150 and the 2 nd rotating body 151) at which the lid 158 of the 1 st supply cup 147 is opened. The 2 nd supply cup 148 opens the cover 162 on the right side of the 1 st rotating body 150 and the 2 nd rotating body 151 (the other side in the width direction of the 1 st rotating body 150 and the 2 nd rotating body 151). The position indicated by reference numeral X2 is the 2 nd open position (the open position on the other side in the width direction of the 1 st rotating body 150 and the 2 nd rotating body 151) where the lid 162 of the 2 nd supply cup 148 is opened.

The 1 st opening position X1 (opening position on one side in the width direction) and the 2 nd opening position X2 (opening position on the other side in the width direction) of the 1 st seedling feeder 72A are set at different positions in the front-rear direction K1. In the present embodiment, the 2 nd opening position X2 is displaced rearward with respect to the 1 st opening position X1. Corresponding to the rearward displacement of the 2 nd open position X2 with respect to the 1 st open position X1, the 2 nd transplanting mechanism 68AR in the transplanting device 68A is displaced rearward with respect to the 1 st transplanting mechanism 68 AL.

In addition, the lid 158 of the 1 st supply cup 147 is opened at the 1 st opening position X1, and the lid 162 of the 2 nd supply cup 148 is opened at the 2 nd opening position X2. Further, as described above, the 1 st transplanting mechanism 68AL and the 2 nd transplanting mechanism 68AR which are displaced forward and backward are simultaneously lifted and lowered. Thereby, staggered row planting is achieved.

The transplanting tool 137 (the 1 st transplanting tool 137AL) on the left side of the transplanting device 68A is located below the 1 st opening position X1. The transplanting tool 137 (the 2 nd transplanting tool 137AR) on the right side of the transplanting device 68A is located below the 2 nd opening position X2.

The 1 st seedling feeder 72A includes a setting member 166 (capable of setting the 1 st opening position X1 and the 2 nd opening position X2) capable of setting the opening positions of the feed cups 147 and 148 to one side and the other side in the width direction of the 1 st rotating body 150 and the 2 nd rotating body 151. The setting member 166 includes a plurality of restricting levers 167, 168, 169, 170. For convenience of explanation, the restricting lever 167 is referred to as a1 st restricting lever 167, the restricting lever 168 is referred to as a 2 nd restricting lever 168, the restricting lever 169 is referred to as a 3 rd restricting lever 169, and the restricting lever 170 is referred to as a 4 th restricting lever 170.

The 1 st regulating lever 167 abuts against the lower surfaces of the lid 158 and 162 of the 1 st and 2 nd supply cups 147 and 148 at the front sides of the 1 st and 2 nd open positions X1 and X2. Thus, the 1 st regulating lever 167 regulates the opening of the covers 158 and 162 of the 1 st and 2 nd supply cups 147 and 148 at the front sides of the 1 st and 2 nd open positions X1 and X2. The 2 nd regulating rod 168 abuts against the lower surfaces of the lid 158 and 162 of the 1 st and 2 nd supply cups 147 and 148 at the rear sides of the 1 st and 2 nd open positions X1 and X2. Thus, the 2 nd restricting lever 168 restricts the opening of the covers 158 and 162 of the 1 st and 2 nd supply cups 147 and 148 at the rear sides of the 1 st and 2 nd open positions X1 and X2.

The 3 rd restricting lever 169 is located at the left side of the 1 st open position X1. The 3 rd restricting lever 169 abuts on the lower surface of the 2 nd engaging portion 164 of the cover 162 located at the 1 st open position X1. Thereby, the opening of the lid 162 of the 2 nd supply cup 148 at the 1 st opening position X1 is restricted. The 4 th restricting lever 170 is located at the left side of the 2 nd open position X2. The 4 th regulating lever 170 abuts against the lower surface of the 1 st engaging portion 163 of the cover 158 located at the 2 nd open position X2. Thereby, the opening of the lid 158 of the 1 st supply cup 147 at the 2 nd open position X2 is restricted.

The 1 st setting unit 196 for setting the 1 st open position X1 is constituted by the left rear end portion of the 1 st restricting lever 167, the left front end portion of the 2 nd restricting lever 168, and the 3 rd restricting lever 169. The 2 nd setting part 197 for setting the 2 nd open position X2 is constituted by the right rear end part of the 1 st regulation lever 167, the right front end part of the 2 nd regulation lever 168, and the 4 th regulation lever 170.

In the 1 st open position X1, the cover 158 of the 1 st supply cup 147 is disengaged from the 1 st restriction lever 167 and the 2 nd restriction lever 168, and the 1 st engagement portion 163 is not supported by the 3 rd restriction lever 169. Thereby, the lid 158 of the 1 st supply cup 147 is opened. At this time, the 1 st transplanting tool 137AL moves to the top dead center position, and the seedlings discharged from the 1 st supply cup 147 are supplied to the 1 st transplanting tool 137 AL. In addition, when the 1 st supply cup 147 is located at the 1 st open position X1, the 2 nd supply cup 148 is located at the 2 nd open position X2. In the 2 nd open position X2, the cover 162 of the 2 nd supply cup 148 is disengaged from the 1 st regulation lever 167 and the 2 nd regulation lever 168, and the 2 nd engagement portion 164 is not supported by the 4 th regulation lever 170. Thereby, the lid 162 of the 2 nd supply cup 148 is opened. At this time, the 2 nd transplanting device 137AR is moved to the top dead center position, and the seedlings discharged from the 2 nd supply cup 148 are supplied to the 2 nd transplanting device 137 AR.

In addition, when the 2 nd supply cup 148 is located at the 1 st open position X1, the 1 st supply cup 147 is located at the 2 nd open position X2. The 2 nd engaging portion 164 of the 2 nd supply cup 148 located at the 1 st opening position X1 is restricted by the 3 rd restricting lever 169 without opening the cover 162 of the 2 nd supply cup 148. At this time, the 1 st transplanting tool 137AL below the 1 st opening position X1 moves downward to transplant the seedlings into the ridges. The 1 st engaging portion 163 of the 1 st supply cup 147 located at the 2 nd open position X2 is restricted by the 4 th restricting lever 170 so as not to open the lid 158 of the 1 st supply cup 148. At this time, the 2 nd transplanting tool 137AR below the 2 nd open position X2 is moved downward to transplant the seedlings into the ridges.

Next, a 2 nd seedling feeder 72B, which is a seedling feeder of the 2 nd transplantation unit 51B, will be described.

The 2 nd seedling feeder 72B is disposed above the 2 nd transplanting device 68B. The seedling is dropped by the 2 nd seedling feeder 72B into the transplanting tool 137 (the 2 nd transplanting device 68B) located therebelow and fed to the transplanting tool 137. Like the 1 st seedling feeder 72A, the 2 nd seedling feeder 72B is supported via a frame above the 2 nd, 3 rd, 8 th, 88 th frame members 83, 88 and the 1 st cross member 97.

The 2 nd seedling feeder 72B has the same configuration as the 1 st seedling feeder 72A, and therefore, the description thereof is omitted.

The supply of the seedlings to the 1 st supply cup 147 and the 2 nd supply cup 148 in the 1 st seedling supply device 72A and the 2 nd seedling supply device 72B is performed by an operator H (see fig. 7) seated in the 1 st front chair 231R, the 2 nd front chair 231L, the 1 st side chair 42R, and the 2 nd side chair 42L, respectively.

The 1 st front chair 231R is located in front of (the 1 st rotating body 150 of) the 1 st seedling feeder 72A. The 2 nd front chair 231L is positioned in front of (the 1 st rotating body 150 of) the 2 nd seedling feeder 72B. The 1 st side chair 42R is positioned on the side (outward in the width direction) of (the cable 152 of) the 1 st seedling feeder 72A in the width direction K2. The 2 nd side chair 42L is positioned on the other side (outward in the width direction) in the width direction K2 of (the cable 152 of) the 2 nd seedling feeder 72B. Thus, the operator sitting on the 1 st front chair 231R and the 1 st side chair 42R can supply the seedlings to the 1 st seedling supply device 72A. Further, the operator sitting on the 2 nd front chair 231L and the 2 nd side chair 42L can supply the seedlings to the 2 nd seedling supply device 72B. Therefore, the seedlings can be supplied to the 1 st seedling feeder 72A and the 2 nd seedling feeder 72B by a plurality of persons, and the seedling supply operation can be performed efficiently.

As shown in fig. 3 and 7, a front seedling stage 278A and a side seedling stage 279A on which a seedling tray having a plurality of seedlings supplied to the supply cups 147 and 148 is placed are provided above the 1 st seedling supply device 72A. The front seedling stage 278A and the side seedling stage 279A are attached to the frame of the 1 st seedling feeder 72A. The front seedling stage 278A is provided above the front portion of the 1 st seedling feeder 72A, and is formed longer in the width direction K2 than in the front-rear direction K1. The front seedling stage 278A is inclined so as to become lower from the rear toward the front. The side seedling stage 279A is provided above the rear portion of the 1 st seedling feeder 72A, and is formed longer in the front-rear direction K1 than in the width direction K2. The side seedling support 279A is inclined so as to become lower from the widthwise inner side toward the widthwise outer side.

As shown in fig. 1, 3, and 7, a front seedling stage 278B and a side seedling stage 279B are also provided above the 2 nd seedling feeder 72B. The configurations of the front seedling stage 278B and the side seedling stage 279B are the same as those of the front seedling stage 278A and the side seedling stage 279A, and therefore, description thereof is omitted.

As shown in fig. 1, 7, and 8, a seedling placing section 280R is provided on one side (right side) in the width direction K2 of the ground working machine 2. A seedling placing section 280L is provided on the other side (left side) in the width direction K2 of the ground working machine 2. The seedling placing sections 280L, 280R include a base plate 281, a support column 282, a support base 283, and a support shaft 284.

The base plate 281 of the seedling placing section 280L is fixed to the rear end of the 1 st member 52 of the 1 st attaching frame 48L, and protrudes outward (leftward) in the width direction from the 1 st member 52. The base plate 281 of the seedling placing section 280R is fixed to the rear end of the 4 th member 54 of the 2 nd attaching frame 48R, and protrudes outward (rightward) in the width direction from the 4 th member 52. The lower end of the support 282 is fixed to the base 281 and extends upward. A plurality of (4 in the present embodiment) support bases 283 are provided. The plurality of support bases 283 are attached to the support column 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 K2 in fig. 1) about the support shaft 284 as a fulcrum (center).

A seedling tray having a plurality of seedlings supplied to the supply cups 147, 148 is placed on the support base 283 of the seedling placement units 280L, 280R. When the seedling trays placed on the seedling stages 278B, 279B of the 2 nd seedling feeder 72B are empty of seedlings, the seedling tray placed on the seedling placement section 280L on the left side is exchanged with the empty seedling tray without seedlings. When the seedling trays placed on the seedling stages 278A, 279A of the 1 st seedling feeder 72A are empty of seedlings, the seedling tray placed on the right seedling placement section 280R is exchanged with the empty seedling tray without seedlings.

The 1 st front chair 231R is disposed on the other side (left side) in the width direction K2 of the seedling placing section 28R. The 2 nd front chair 231L is disposed on one side (right side) in the width direction K2 of the seedling placing section 28L. Thus, the operator sitting in the 1 st front chair 231R can easily perform the operation of taking out the seedling tray placed on the seedling placing section 28R. Further, the operator sitting in the 2 nd front chair 231L can easily perform the operation of taking out the seedling tray placed on the seedling placing section 28L.

The work machine 4 of the above embodiment includes: a ground working machine 2 which is mounted to the rear portion of the traveling structure 1 and which works a field; transplant frames 69A, 69B, the transplant frames 69A, 69B being provided behind the ground working machine 2; and transplanting devices 68A, 68B for transplanting the seedlings into a field, the transplanting devices 68A, 68B having: first transplanting mechanisms 68AL, 68BL, and first transplanting mechanisms 68AL, 68BL attached to transplanting frames 69A, 69B; and 2 nd transplanting mechanisms 68AR, 68BR, the 2 nd transplanting mechanisms 68AR, 68BR being arranged in parallel with the 1 st transplanting mechanisms 68AL, 68BL and being attached to the transplanting frames 69A, 69B at positions different from the 1 st transplanting mechanisms in the front-rear direction. This makes it possible to perform the transplanting of seedlings with a narrowed inter-row distance together with the ground work (such as tilling) while traveling by 1 work machine 4. Moreover, first transplanting mechanisms 68AL, 68BL and second transplanting mechanisms 68AR, 68BR can be easily mounted to the rear of ground-facing work machine 2 via transplanting frames 69A, 69B.

Further, the work machine 4 includes attachment 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, and the transfer frames 69A and 69B are attached to the tool bar 49. This makes it possible to easily attach transplantation frames 69A and 69B to which first transplantation mechanisms 68AL and 68BL and second transplantation mechanisms 68BL and 68BR are attached to attachment frames 48L and 48R via tool bars 49.

Further, the work machine 4 includes: a plurality of supply cups 147, 148, the plurality of supply cups 147, 148 having a housing part 160 for housing the seedling and a cover 158 provided at a lower part of the housing part 160; a transport mechanism 149 for transporting the plurality of supply cups 147, 148 along an annular path P passing through one side in the width direction and the other side in the width direction of the graft frames 69A, 69B; and a setting member 166 capable of abutting against the lid 162 and setting an opening position of the lid 162 to a1 st opening position X1 on one side (left side) in the width direction and a 2 nd opening position X2 on the other side (right side) in the width direction and different from the 1 st opening position X1 in the front-rear direction, wherein the 1 st transplanting mechanisms 68AL and 68BL have 1 st transplanting tools 137AL and 137BL provided below the 1 st opening position X1, the 1 st transplanting tools 137AL and 137BL are capable of being flushed into a field to transplant seedlings, and the 2 nd transplanting mechanisms 68AR and 68BR have 2 nd transplanting tools 137AR and 137BR provided below the 2 nd opening position X2, and the 2 nd transplanting tools 137AR and 137BR are capable of being flushed into a field to transplant seedlings. Thus, 1 seedling feeder may be provided to cope with the double row planting, and two seedling feeders may be provided in parallel to cope with the four row planting. Therefore, the work machine compact in the width direction of the transplant frame and capable of coping with multi-row planting can be provided.

The working machine 4 includes a1 st lifting device 139AL for lifting and lowering the 1 st transplanting tools 137AL, 137BL and a 2 nd lifting device 139AR for lifting and lowering the 2 nd transplanting tools 137AR, 137BR, and the lifting and lowering of the 1 st transplanting tools 137AL, 137BL by the 1 st lifting device 139AL and the lifting and lowering of the 2 nd transplanting tools 137AR, 137BR by the 2 nd lifting device 139AR are performed simultaneously. This, in addition to shifting of first transplanting mechanisms 68AL and 68BL and second transplanting mechanisms 68AR and 68BR in the front-rear direction, makes it possible to realize staggered row planting with a narrow inter-row distance.

The stop position when the up-and-down operation of the 1 st transplanting tools 137AL, 137BL is stopped is the top dead center position of the 1 st transplanting tools 137AL, 137BL, and the stop position when the up-and-down operation of the 2 nd transplanting tools 137AR, 137BR is stopped is the top dead center position of the 2 nd transplanting tools 137AR, 137 BR. Thus, when the transplanting tool is stopped for inter-plant control, the transplanting tool can be prevented from hitting against the stem of the transplanted seedling and lodging the seedling.

Further, the work machine 4 includes: a1 st height changing device 50, the 1 st height changing device 50 being capable of changing the height of the transplant frames 69A, 69B with respect to the ground working machine 2; and a 2 nd height changing device 28, wherein the 2 nd height changing device 28 is capable of changing the height of the ground working machine 2 independently of the change of the height of the transfer frames 69A, 69B by the 1 st height changing device 50. This enables the operation of changing the height of the ground working machine 2 and the operation of changing the height of the transfer frames 69A and 69B with respect to the ground working machine 2 to be performed independently of each other. Therefore, the transplanting depth of the seedling can be changed by the 1 st height changing device 50 independently of the change of the height of the ground working machine 2 by the 2 nd height changing device 28, and therefore, the transplanting depth of the seedling can be easily changed.

The ground working machine 2 is a rotary tiller, and thus can perform a transplanting operation while tilling with 1 working machine.

The transplanter 3 of the above embodiment includes transplanting frames 69A and 69B provided behind the ground-working machine 2 for working a field, and transplanting devices 68A and 68B for transplanting seedlings into the field, and the transplanting devices 68A and 68B include: first transplanting mechanisms 68AL, 68BL, and first transplanting mechanisms 68AL, 68BL attached to transplanting frames 69A, 69B; and 2 nd transplanting mechanisms 68AR, 68BR, the 2 nd transplanting mechanisms 68AR, 68BR being arranged in parallel with the 1 st transplanting mechanisms 68AL, 68BL and being attached to the transplanting frames 69A, 69B at a position different from the 1 st transplanting mechanism in the front-rear direction. This enables the ground working machine 2 to be used together with the ground working machine to perform ground working (such as tilling) and transplanting of seedlings with a narrow inter-row distance. Moreover, first transplanting mechanisms 68AL, 68BL and second transplanting mechanisms 68AR, 68BR can be easily mounted to the rear of ground-facing work machine 2 via transplanting frames 69A, 69B.

Moreover, transplanting machine 3 includes attachment frames 48L and 48R extending rearward from ground-facing work machine 2, and tool bar 49 attached to attachment frames 48L and 48R, and transplanting frames 69A and 69B are attached to tool bar 49. This makes it possible to easily attach transplantation frames 69A and 69B to which first transplantation mechanisms 68AL and 68BL and second transplantation mechanisms 68BL and 68BR are attached to attachment frames 48L and 48R via tool bars 49.

Further, the work machine 4 of the above embodiment includes: a ground working machine 2 which is mounted to the rear portion of the traveling structure 1 and which works a field; seedling supply devices 72A and 72B, the seedling supply devices 72A and 72B being disposed behind the ground working machine 2 and having a conveying mechanism 149, the conveying mechanism 149 conveying a plurality of supply cups 147 and 148 that accommodate seedlings along an annular path P that is long in the front-rear direction; transplanting devices 68A, 68B provided below the seedling supply devices 72A, 72B, for transplanting the seedlings supplied from the seedling supply devices into a field; and front chairs 231L, 231R, which are provided above the ground working machine 2 and in front of the seedling supply devices 72A, 72B, and on which workers sit. Thus, the operator can sit on the front chairs 231L, 231R above the ground working machine 2 to supply the seedlings from the front direction of the seedling supply devices 72A, 72B to the seedling supply devices. Thus, even when two seedling feeding devices are provided in parallel in the width direction of the traveling body 1 to cope with the double row planting, the size of the working machine 4 in the width direction is not increased. Further, since the front chairs 231L and 231R are provided above the ground working machine 2, the working machine 4 can be prevented from being enlarged in the front-rear direction. Therefore, the seedling supply operation to the seedling supply devices 72A and 72B can be performed efficiently with a compact configuration.

Further, since the working machine 4 includes the side chairs 42L and 42R provided on one side in the width direction of the travel body 1 of the seedling supply devices 72A and 72B, the seedlings can be supplied to the seedling supply devices 72A and 72B by the workers sitting on the front chairs 231L and 231R and the workers sitting on the side chairs 42L and 42R. This enables a plurality of persons to supply seedlings to the seedling supply devices 72A and 72B, and thus the seedling supply operation can be performed efficiently.

The seedling feeder 72A, 72B further includes: a1 st rotating body 150 disposed behind the ground-facing work machine 2 and rotatably supported; a 2 nd rotating body 151 disposed behind the 1 st rotating body 150 and rotatably supported; and an annular cable 152 wound around the 1 st rotating body 150 and the 2 nd rotating body 151, wherein the front chairs 231L, 231R are provided in front of the 1 st rotating body 150. Thus, the front chairs 231L, 231R can be disposed in front of the seedling feeder 72A, 72B without interfering with the driving of the seedling feeder 72A, 72B.

The seedling feeder includes a1 st seedling feeder 72A disposed on one side in the width direction and a 2 nd seedling feeder 72B disposed on the other side in the width direction, and the front chair includes a1 st front chair 231R disposed in front of the 1 st seedling feeder 72A and a 2 nd front chair 231L disposed in front of the 2 nd seedling feeder 72B. This enables the operator sitting in the 1 st front chair 231R to supply the 1 st seedling supply device 72A with seedlings. Further, the operator sitting in the 2 nd front chair 231L can supply the seedlings to the 2 nd seedling supply device 72B. Therefore, the double row planting can be dealt with without increasing the size of the working machine in the width direction.

The side chairs include a1 st side chair 42R provided on one side in the width direction of the 1 st seedling feeder 72A, and a 2 nd side chair 42L provided on the other side in the width direction of the 2 nd seedling feeder 72B. This enables the operator sitting in the 1 st side chair 42R to supply the 1 st seedling supply device 72A with seedlings. Further, the operator sitting in the 2 nd front chair 42L can supply the seedling to the 2 nd seedling supply device 72B. Therefore, in the working machine for the double row planting, the seedlings can be efficiently supplied to the seedling supply device.

The work machine 4 is provided with an attitude changing mechanism 214 that changes the attitude of the side chairs 42L, 42R, and the attitude changing mechanism 214 can change the attitude of the side chairs 42L, 42R to a1 st attitude in which the seat surfaces of the side chairs are substantially horizontal and a 2 nd attitude in which the seat surfaces are inclined forward with respect to the 1 st attitude. This allows the 1 st posture to be set when the side chairs 42L and 42R are used, and the 2 nd posture to be set when the side chairs 42L and 42R are not used. Therefore, when the side chairs 42L, 42R are not used, the work machine 4 can be made compact in the width direction.

The posture changing mechanism 214 includes a biasing mechanism 215 that assists the changing operation of the side chairs 42L, 42R from the 1 st posture to the 2 nd posture, and a holding mechanism 216 that holds the postures of the side chairs 42L, 42R in the 2 nd posture. Therefore, when the worker changes the side chairs 42L, 42R from the 1 st posture to the 2 nd posture, the worker can easily perform the changing operation by assisting the necessary force with the urging mechanism 215. In addition, the side chairs 42L, 42R can be reliably held in the 2 nd posture by the holding mechanism 216.

Further, the working machine 4 is provided with a position adjustment mechanism capable of adjusting the position of the side chairs 42L, 42R in the width direction, and thus the distance between the side chairs 42L, 42R and the seedling feeder devices 72A, 72B can be adjusted according to the physique of the operator or the like.

The work machine 4 includes seedling placement portions 280L and 280R for placing the 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 disposed on the other side in the width direction of the seedling placement portions 280L and 280R. Thus, the operator sitting in the front chairs 231L, 231R can easily and efficiently perform the operation of taking out the seedlings placed on the seedling placing parts 28L, 28R and supplying the seedlings to the seedling supplying devices 72A, 72B.

The working machine 4 is provided with an operation unit 233 for performing setting operations related to transplanting of seedlings above the ground working machine 2, and the front chairs 231L and 231R are disposed between the seedling placement units 280L and 280R and the operation unit 233. Accordingly, the operator sitting in the front chairs 231L and 231R can perform the operation by the operation unit 233 by stretching his hand inward and forward in the width direction while sitting, and thus the operability is very good.

Further, since the ground working machine 1 is a rotary tiller, the transplanting operation of seedlings can be performed while tilling by 1 working machine.

The transplanter 3 of the above embodiment includes: seedling supply devices 72A and 72B, which are disposed behind the ground working machine 2 that works a field, and which have a transport mechanism 149 that transports a plurality of supply cups 147 and 148 that accommodate seedlings along an endless path P that is long in the front-rear direction; transplanting devices 68A, 68B provided below the seedling supply devices 72A, 72B, for transplanting the seedlings supplied from the seedling supply devices into a field; and front chairs 231L, 231R, which are provided above the ground working machine 2 and in front of the seedling supply devices 68A, 68B, and on which workers sit. Thus, when used together with the ground working machine 2, the operator can sit on the front chairs 231L, 231R above the ground working machine 2 to supply the seedlings from the front of the seedling supply devices 72A, 72B to the seedling supply devices. Thus, even when two seedling feeding devices are provided in parallel in the width direction of the traveling body 1 to cope with the double row planting, the transplanter 3 does not become large in the width direction. Further, since the front chairs 231L, 231R are provided above the ground working machine 2, the transplanting machine 3 can be prevented from being enlarged in the front-rear direction. Therefore, the seedling supply operation to the seedling supply devices 72A and 72B can be performed efficiently with a compact configuration.

Further, the transplanter 3 includes the side chairs 42L and 42R provided on one side in the width direction of the travel body of the seedling feeder 72A and 72B, on which the operator sits, and thus the operator sitting on the front chairs 231L and 231R and the operator sitting on the side chairs 42L and 42R can feed the seedlings to the seedling feeder 72A and 72B. This enables a plurality of persons to supply seedlings to the seedling supply devices 72A and 72B, and thus the seedling supply operation can be performed efficiently.

The mulching film laying device 300 includes: a support frame 26, the support frame 26 being attached to the movable traveling body 1 (tractor); a film roll 301, the film roll 301 being provided on the support frame 26 and formed by winding a mulching film F1 around the axis of the support frame 26 in the width direction K2; a cutting member 302 for forming a buried groove 321 in the field for burying an end portion in the width direction K2 of a mulching film F1 rolled out from a film roll 301 and laid on a ridge R1 of the field, in the cutting member 302; and a1 st support body 306L that supports the grooving member 302 so as to be adjustable in vertical position and position in the width direction K2. Thereby, the formation position of the embedded groove 321 in the width direction K2 of the support frame 26 can be changed, and the embedded groove 321 can be formed corresponding to the mulching films F1 having different widths.

The transplanter 3 includes: a transplanting device 68A (68B), the transplanting device 68A (68B) transplanting the seedling to a field H1; a transplant frame 69A (69B), the transplant frame 69A (69B) supporting a transplant device 68A (68B); a soil covering wheel 74, the soil covering wheel 74 hilling the seedlings transplanted by the transplanting device 68A (68B) from a side direction; and a casing frame 400, the casing frame 400 having a vertical support member 402 provided to the transfer frame 69A (69B), the casing wheel 74 being adjustable in position around the vertical support member 402, and the casing wheel 74 being adjustable in the width direction K2 of the transfer frame 69A (69B). That is, the soil covering wheel 74 can adjust the position of the periphery of the vertical support member 402 (angle adjustment around the vertical line O1) and the position of the graft frame 69A (69B) in the width direction K2. This enables fine adjustment of the position of the soil-working wheel 74.

While the present invention has been described in detail, it should be understood that the embodiments disclosed herein are illustrative and not restrictive in all respects. The scope of the present invention is defined by the claims rather than the description above, and all modifications within the meaning and scope equivalent to the claims are intended to be included.

Claims (3)

1. A working machine characterized by comprising:

a ground working machine which is mounted to a rear portion of the traveling body and works a field;

a transplant frame disposed rearward of the ground working machine;

a seedling supply device which is arranged behind the ground working machine and has a conveying mechanism for conveying a plurality of supply cups for accommodating seedlings along a long annular path;

a transplanting device which is provided below the seedling supplying device and transplants the seedlings supplied from the seedling supplying device into a field;

a front chair provided above the ground working machine and in front of the seedling feeder, and on which a worker sits;

a plurality of supply cups having a housing portion for housing the seedling and a cover provided at a lower portion of the housing portion;

a conveying mechanism that conveys the plurality of supply cups along an annular path that passes through one side in the width direction and the other side in the width direction of the graft frame; and

a setting member that is capable of abutting against the cover and setting an opening position of the cover to a1 st opening position on one side in the width direction and a 2 nd opening position that is located on the other side in the width direction and is different from the 1 st opening position in the front-rear direction,

the transplanting device is provided with a1 st transplanting mechanism and a 2 nd transplanting mechanism,

the 1 st transplanting mechanism is provided with a1 st transplanting tool arranged below the 1 st opening position, the 1 st transplanting tool can be flushed into a field to transplant seedlings,

the 2 nd transplanting mechanism has a 2 nd transplanting tool arranged below the 2 nd opening position, and the 2 nd transplanting tool can be flushed into a field to transplant seedlings.

2. The work machine of claim 1,

the work machine is provided with:

a1 st lifting device, wherein the 1 st lifting device lifts the 1 st transplanting tool; and

a 2 nd lifting device for lifting the 2 nd transplanting tool by the 2 nd lifting device,

the lifting of the 1 st transplanting tool by the 1 st lifting device and the lifting of the 2 nd transplanting tool by the 2 nd lifting device are simultaneously carried out.

3. The work machine of claim 2,

the stop position when the lifting action of the 1 st transplanting tool is stopped is the top dead center position of the 1 st transplanting tool,

the stop position when the lifting operation of the 2 nd transplanting device is stopped is the top dead center position of the 2 nd transplanting device.

Images