CN113923974B - Transplanting machine - Google Patents

Abstract

The interval adjustment structure between the first transplanting unit (63R) and the first seedling placement table (9R) and the second transplanting unit (63L) and the second seedling placement table (9L) is simplified. The device is provided with: a first seedling placement table (9R) and a second seedling placement table (9L) which are movably supported by the main frame (37); a connecting member (235) that connects the first seedling stage (9R) and the second seedling stage (9L); a first transplanting unit (63R) having a first seedling taking-out device (11R) for taking out a seedling from the first seedling placement table (9R) and a first transplanting device (35R) for transplanting the taken-out seedling; a second transplanting unit (63L) having a second seedling taking-out device (11L) for taking out the seedlings from the second seedling placement table (9L) and a second transplanting device (35L) for transplanting the taken-out seedlings to the field; and a lateral feeding mechanism (236) which is mounted on the first transplanting unit (63R) and which enables the first seedling stage (9R) to be laterally fed, wherein the first transplanting unit (63R) and the second transplanting unit (63L) are supported on the main frame (37) in a manner that the positions of the first transplanting unit and the second transplanting unit can be adjusted in the machine body width direction (K2) independently, the first seedling stage (9R) and the first transplanting unit (63R) can be integrally adjusted in the machine body width direction (K2), and the second seedling stage (9L) can be mounted on the connecting member (235) in a manner that the positions of the first transplanting unit and the second transplanting unit can be adjusted in the machine body width direction (K2).

Description

Transplanting machine

Technical Field

The present invention relates to a transplanting machine for transplanting seedlings to a field, for example.

Background

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

The transplanting machine disclosed in patent document 1 includes a first seedling placement table and a second seedling placement table arranged in the machine body width direction. The first seedling stage and the second seedling stage are supported on the main frame so as to be movable in the machine body width direction. Further, a first transplanting unit corresponding to the first seedling stage and a second transplanting unit corresponding to the second seedling stage are supported by the main frame. By approaching and separating the first transplanting unit and the second transplanting unit in the machine body width direction in a linked manner, the machine body width direction interval can be adjusted (row interval adjustment can be performed). The first seedling stage and the second seedling stage are also adjusted at intervals in the machine body width direction in conjunction with the interval adjustment of the first transplanting unit and the second transplanting unit.

The transplanting machine disclosed in patent document 1 further includes a vertical feeding mechanism for conveying seedling trays placed on the first seedling placement table and the second seedling placement table in the vertical direction.

Prior art literature

Patent literature

Patent document 1 Japanese patent laid-open publication No. 2000-139117 "

Disclosure of Invention

Problems to be solved by the invention

In the transplanting machine disclosed in patent document 1, a linkage mechanism for adjusting the interval while the first transplanting unit and the first seedling placement table are linked with the second transplanting unit and the second seedling placement table is complicated.

In the transplanting machine disclosed in patent document 1, it is impossible to drive only any seedling tray out of the seedling trays placed on the first seedling placement table and the seedling tray placed on the second seedling placement table in the longitudinal feed.

The present invention has been made in view of the above-described problems, and an object thereof is to provide a transplanting machine capable of simplifying a structure for adjusting the interval between a first transplanting unit and a first seedling stage and between a second transplanting unit and a second seedling stage.

Further, an object of the present invention is to provide a transplanting machine capable of driving only any one of a seedling tray placed on a first seedling placement table and a seedling tray placed on a second seedling placement table to be fed longitudinally.

Means for solving the problems

An aspect of the present invention provides a transplanting machine comprising: a main frame; a first seedling stage and a second seedling stage which are arranged in the body width direction and are supported on the main frame so as to be movable in the body width direction; a connecting member that connects the first seedling stage and the second seedling stage; a first transplanting unit having a first seedling taking-out device that takes out seedlings from a seedling tray placed on the first seedling placement table, and a first transplanting device that transplants the seedlings taken out by the first seedling taking-out device to a field; a second transplanting unit having a second seedling taking-out device that takes out seedlings from a seedling tray placed on the second seedling placement table, and a second transplanting device that transplants the seedlings taken out by the second seedling taking-out device to a field; and a lateral feed mechanism that is attached to the first transplanting unit and that laterally feeds the first seedling stage in the machine body width direction, wherein the first transplanting unit and the second transplanting unit are supported by the main frame so as to be capable of being individually and independently position-adjusted in the machine body width direction, wherein the first seedling stage and the first transplanting unit are coupled to each other via the lateral feed mechanism and are integrally position-adjusted in the machine body width direction, and wherein the second seedling stage is attached to the coupling member so as to be capable of being position-adjusted in the machine body width direction.

The seedling transplanting device is provided with a driving main shaft which is arranged at the front part of the first transplanting unit and the second transplanting unit in a manner of extending along the width direction of the machine body, is supported by the main frame and transmits power to the transverse feeding mechanism, the first transplanting unit is provided with a first unit frame which is provided with the first seedling taking-out device and the first transplanting device, the second transplanting unit is provided with a second unit frame which is provided with the second seedling taking-out device and the second transplanting device, and the first unit frame and the second unit frame are supported by the driving main shaft in a manner of being capable of moving along the width direction of the machine body.

The main frame includes a first connecting plate disposed behind the first unit frame and a second connecting plate disposed behind the second unit frame, the first unit frame includes a first mounting plate mounted to the first connecting plate so as to be positionally adjustable in the machine body width direction, and the second unit frame includes a second mounting plate mounted to the second connecting plate so as to be positionally adjustable in the machine body width direction.

The main frame includes a rail member extending in the machine body width direction, the first seedling stage includes a first roller supported by the rail member so as to be movable in the machine body width direction, and a first holder member to which the first roller is attached, the second seedling stage includes a second roller supported by the rail member so as to be movable in the machine body width direction, and a second holder member to which the second roller is attached, the first holder member includes a first stay plate attached to the coupling member, and the second holder member includes a second stay plate attached to the coupling member.

In addition, a transplanting machine according to another aspect of the present invention includes: a first seedling stage and a second seedling stage on which Miao Tuopan are placed; and a longitudinal feeding mechanism for conveying the seedling trays placed on the first seedling placement table and the second seedling placement table in the longitudinal direction, wherein the longitudinal feeding mechanism comprises: a longitudinal feeding main shaft which is provided throughout the first and second seedling stages and is transmitted with longitudinal feeding power for conveying the seedling trays in the longitudinal direction; a first longitudinal feeding working shaft which is arranged on the first seedling carrying table and is used for conveying the seedling tray carried on the first seedling carrying table along the longitudinal direction; the second longitudinal feeding working shaft is arranged on the second seedling carrying table and is used for conveying the seedling trays carried on the second seedling carrying table along the longitudinal direction; a first longitudinal feed clutch capable of intermittently transmitting power from the longitudinal feed main shaft to the first longitudinal feed working shaft; and a second longitudinal feed clutch capable of intermittently transmitting power from the longitudinal feed main shaft to the second longitudinal feed working shaft.

In addition, the longitudinal feed spindle has: a rotating body to which the longitudinal feeding power is transmitted; and a shaft body fixed to the rotating body and provided throughout the first seedling placement table and the second seedling placement table, the first longitudinal feed operating shaft having a first input portion relatively rotatably fitted to the shaft body and adjacent to the rotating body, the first longitudinal feed clutch having: a drive engagement portion provided to the rotating body; a clutch body that is movably fitted to the first input unit in an axial direction and integrally rotatable; and a driven engagement portion provided on the clutch body, and configured to be engaged with and disengaged from the drive engagement portion by moving the clutch body in an axial direction.

The shaft body has a first shaft on the first seedling stage side, a second shaft on the second seedling stage side, and a coupling body coupling the first shaft and the second shaft.

The second seedling stage and the first seedling stage are arranged in the machine body width direction and are adjustable at intervals in the machine body width direction with respect to the first seedling stage, the longitudinal feed main shaft has an extension shaft portion protruding from the second seedling stage to a side opposite to the first seedling stage, the second longitudinal feed working shaft has a second input portion fitted to the extension shaft portion so as to be rotatable with respect to the second seedling stage, and the second longitudinal feed clutch has: a rotating part which is movably fitted to the extension shaft part in the axial direction and integrally rotatable, and is attached to the second seedling stage; and a clutch shifter that is movably fitted to the second input unit in the axial direction and integrally rotatable, and that is movable in the axial direction to be engaged with and disengaged from the rotating unit.

In addition, the first longitudinal feed clutch is provided on the opposite side of the first seedling stage from the second seedling stage.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the above configuration, the first transplanting unit and the second transplanting unit are independently adjusted in position in the body width direction, and the first seedling stage and the second seedling stage move in accordance with the adjustment of the position of the first transplanting unit. After the first transplanting unit is adjusted in position, the second seedling placement table is adjusted in position relative to the connecting member in the body width direction. Thus, the first transplanting unit and the first seedling stage can be adjusted in the interval with the second transplanting unit and the second seedling stage without using a complicated linkage mechanism.

Further, according to the above configuration, since the first vertical feed clutch capable of intermittently transmitting power from the vertical feed main shaft to the first vertical feed operating shaft and the second vertical feed clutch capable of intermittently transmitting power from the vertical feed main shaft to the second vertical feed operating shaft are provided, it is possible to perform vertical feed driving only on any one of the seedling trays placed on the first seedling placement table and the seedling tray placed on the second seedling placement table.

Drawings

Fig. 1 is a schematic side view of a transplanting machine.

Fig. 2 is a schematic top view of the transplanting machine.

Fig. 3 is a side view of the body.

Fig. 4 is a side view showing the moving path of the seedling tray and the empty tray receiving part.

Fig. 5 is a perspective view of the rear portion of the running body.

Fig. 6 is a top view of the seedling tray.

Fig. 7 is a front view of the seedling tray.

Fig. 8 is a top view of the main frame.

Fig. 9 is a side view of the main frame.

Fig. 10 is a rear view of the main frame.

Fig. 11 is a top view of the implant unit.

Fig. 12 is a rear view showing the front side support of the unit frame.

Fig. 13 is a plan view showing the rear side support of the unit frame.

Fig. 14 is a side view showing the rear side support of the unit frame.

Fig. 15 is a side view of the power input section that inputs power to the drive spindle.

Fig. 16 is a plan view of the power input portion.

Fig. 17 is a side view of the irrigation pump and the irrigation transmission mechanism.

Fig. 18 is a top view of the irrigation pump and the irrigation transmission mechanism.

Fig. 19 is a rear view of the irrigation pump and the irrigation transmission mechanism.

Fig. 20 is a schematic rear view showing a discharge path from the irrigation pump.

Fig. 21 is a side view showing a work machine mounting device.

Fig. 22 is a rear view of the support structure of the main frame.

Fig. 23 is a rear view of the scrolling mechanism.

Fig. 24 is a side view of the rolling mechanism.

Fig. 25 is a side view of a support structure for the sensing roll.

Fig. 26 is a rear view of the support structure of the sensing roll.

Fig. 27 is a rear view of the support structure of the sensing roll.

Fig. 28 is a top view of the first graft unit and the second graft unit.

Fig. 29 is a side view showing the transplanting depth adjusting mechanism and the transplanting lifting mechanism.

Fig. 30 is a rear view showing the transplanting depth adjusting mechanism.

Fig. 31 is a side view showing the earth covering pressure adjusting mechanism.

Fig. 32 is a plan view showing the operation portion.

Fig. 33 is a plan view showing the transplanting lifting mechanism.

Fig. 34 is a side view of the transplanting lifting mechanism.

Fig. 35 is a side view showing a mounting portion of the irrigation pipe.

Fig. 36 is a rear view, partially cut away, showing the mounting portion of the irrigation pipe.

Fig. 37 is a plan view showing the main frame and the seedling stage.

Fig. 38 is a plan view showing the seedling stage.

Fig. 39 is a rear view showing a connection structure of the first seedling stage and the second seedling stage.

Fig. 40 is a side view of the lower part of the seedling stage.

Fig. 41 is a rear view showing the infeed mechanism.

Fig. 42 is a side view showing the tray conveying mechanism and the seedling taking-out device.

Fig. 43 is a rear sectional view showing the longitudinal feed drive mechanism.

Fig. 44 is a rear sectional view showing the right side of the longitudinal feed drive mechanism.

Fig. 45 is a view showing the left side of the longitudinal feed drive mechanism.

Fig. 46 is a side view showing the longitudinal feed mechanism.

Fig. 47 is a plan view showing the tray pressing mechanism.

Fig. 48 is a side view showing the tray pressing mechanism.

Fig. 49 is a rear view showing the tray pressing mechanism.

Fig. 50 is a side view showing the first pressing mechanism.

Fig. 51 is a side view showing the second pressing mechanism.

Detailed Description

Hereinafter, an embodiment of the present invention will be described with reference to the drawings as appropriate.

Fig. 1 is a schematic side view showing the overall structure of a transplanting machine 1 of the present embodiment. Fig. 2 is a schematic plan view of the transplanting machine 1.

As shown in fig. 1, the transplanter 1 is a passenger type transplanter (passenger type transplanter) having a driver seat 3 on which an operator (driver) 2 sits.

As shown in fig. 1 and 2, the transplanting machine 1 includes a transplanting machine 4 for transplanting seedlings 7 to a field 6, and a traveling body 5 on which the transplanting machine 4 is mounted and traveling. Therefore, the transplanting machine 1 is a machine that transplants the seedlings 7 in the field 6 by the transplanting work machine 4 while traveling on the field 6 by the traveling body 5.

In the embodiment of the present invention, the direction of the front side of the operator 2 (the direction of arrow A1 in fig. 1 and 2) with respect to the driver's seat 3 of the transplanting machine 1 is set to the front, and the direction of the rear side of the operator 2 (the direction of arrow A2 in fig. 1 and 2) is set to the rear. The direction of arrow K1 in fig. 1 and 2 is referred to as the longitudinal direction of the body. The explanation will be given with the right side of the operator 2 (in the direction of arrow B1 in fig. 2) being the right side, and the left side of the operator 2 (in the direction of arrow B2 in fig. 2) being the left side.

As shown in fig. 2, a horizontal direction, which is a direction orthogonal to the machine body front-rear direction K1, is described as a machine body width direction K2. The direction from the center of the body in the width direction to the right or left is described as the outside of the body. In other words, the outer side of the machine body means the direction in which the machine body width direction K2 is away from the center in the machine body width direction. The direction opposite to the outside of the machine body is defined as the inside of the machine body, and will be described. In other words, the body interior refers to a direction in the body width direction K2 and approaching the center in the body width direction.

First, an outline of the transplanting work machine 4 will be described.

As shown in fig. 1, the transplanting work machine 4 has a seedling placement table 9, and the seedling placement table 9 places a plurality of seedling trays (tray units) 8 having a plurality of seedlings 7.

As shown in fig. 6 and 7, the seedling tray 8 is made of plastic, is thin, has flexibility, and is rectangular in plan view. The seedling tray 8 has a plurality of pot portions 8a, and the pot portions 8a are formed in a checkerboard arrangement at predetermined intervals in a longitudinal and lateral manner. The opening edge of the tank portion 8a is connected by a flat upper surface wall 8 b. The tank portion 8a protrudes from the upper surface wall 8b toward the rear surface side. In the seedling tray 8, seedling 7 (soil block seedling) is cultivated by feeding bed soil to the pot 8a and sowing the bed soil to grow seedlings.

As shown in fig. 3, the seedling placement table 9 includes a placement plate 10 on which the seedling tray 8 is placed in a state where the seedling tray 8 is inclined downward (inclined in a direction that moves rearward as going downward). As shown in fig. 1, the seedlings 7 of the seedling tray 8 are individually taken out by the seedling taking-out device 11 disposed at the rear of the lower part of the seedling stage 9, and supplied to the transplanting body 12 below. The transplanting body 12 reciprocates up and down and picks up the seedling 7 at the top dead center position. The transplanting body 12 is pushed into the field 6 when it descends, and the seedlings 7 are transplanted. Specifically, the transplanting body 12 is formed of an opener that can be opened and closed in the front-rear direction, and in a closed state, the seedling 7 is held inside and directed downward, and when the seedling is punched into the field 6, the transplanting hole is formed in the field 6 by opening in the front-rear direction, and the seedling 7 is dropped into the transplanting hole to be transplanted. The transplanting machine 4 takes out the seedlings 7 from the seedling trays 8 and automatically transplanting them in the field 6 at predetermined intervals.

As shown in fig. 3, the mounting plate 10 can vertically place a plurality of seedling trays 8 in an inclined direction. The seedling tray 8 is arranged so that the longitudinal direction matches the oblique direction. The seedling taking-out device 11 takes out the seedlings 7 from the lowest seedling tray 8 (8A) among the plurality of seedling trays 8 mounted on the mounting plate 10. The seedling taking-out device 11 takes out the seedlings 7 one by one from the seedling tray 8 while intermittently feeding the seedling placement table 9 in the body width direction K2 by one pitch of the tank portion 8 a. When the seedlings 7 in a row are taken out from the seedling trays 8, the seedling trays 8 are fed downward in the oblique direction by the amount of one pitch of the pot portion 8 a. This allows the seedlings 7 in the next row in the lateral direction to be taken out. Thereafter, the seedling stage 9 is fed in the opposite direction to the previous direction, and the seedlings 7 are taken out, and when the seedlings 7 in the row in the lateral direction are taken out, the seedling tray 8 is fed in the longitudinal direction. By repeating this process in sequence, all seedlings 7 are taken out from the seedling tray 8.

As shown in fig. 3, the seedling placement table 9 has a reverse guide 13 at a lower portion, and the seedling tray 8 from which the seedlings 7 are taken out by the seedling taking-out device 11 is conveyed to the reverse guide 13 by being fed in the longitudinal direction. The seedling tray 8 conveyed to the reversing guide 13 is guided by the reversing guide 13 and is guided to the back surface side (lower surface side) 10A of the mounting plate 10. The seedling stage 9 has an empty tray guide 14 on the back surface side of the mounting plate 10. The empty tray guide 14 has a curved portion 14a at a lower portion. The curved portion 14a receives Miao Tuopan from the reverse guide 13 and guides the guide body 14b disposed on the back surface side of the mounting plate 10. The empty seedling tray 8 is guided by the guide body 14b to the upper portion of the back surface of the mounting plate 10. The empty tray guide 14 has an upper guide portion 14c at an upper portion. The upper guide portion 14c extends forward from the upper end of the guide body portion 14b toward the driver seat 3. The upper guide portion 14c is formed slightly inclined at a rear height and a front height (inclined as it goes forward and downward). The empty seedling tray 8 can be taken out from the upper guide 14c.

Next, the traveling body 5 will be described in detail.

As shown in fig. 1, the traveling body 5 is disposed in front of the transplanting work machine 4.

As shown in fig. 4, the traveling body 5 includes a body 16 on which the driver's seat 3 is mounted, and a traveling device 17 that supports the body 16 so as to be capable of traveling. The machine body 16 includes a prime mover 18, a prime mover frame 19, a transmission case 20, and a machine body frame 21. The prime mover 18 is, for example, a diesel engine. The prime mover 18 is disposed at the front of the traveling body 5. The prime mover frame 19 is disposed below the prime mover 18 and supports the prime mover 18. The transmission case 20 is disposed behind the prime mover 18, and houses a transmission mechanism that changes the speed of power output from the prime mover 18. A prime mover frame 19 is coupled to a front portion of the transmission 20. The machine frame 21 is disposed behind the transmission case 20. In other words, the body frame 21 is disposed at the rear of the traveling body 5. A transmission case 20 is coupled to a front portion of the machine frame 21. The body frame 21 has a support 22 at the rear. The driver's seat 3 is attached to the support 22 via a seat attachment member 31.

The driver's seat 3 is disposed at the rear of the body 16. The driver's seat 3 has a seat portion 3A and a backrest portion 3B. The seat portion 3A is a portion on which the operator 2 sits (mounts buttocks and thighs). The backrest 3B is a portion against which the seated operator 2 leans against the back, and is provided so as to extend upward at the rear of the seat 3A.

As shown in fig. 1 and 2, in the present embodiment, the traveling device 17 is a wheel-type traveling device having left and right front wheels 23 and left and right rear wheels 24. The front wheels 23 and the rear wheels 24 are rotated by transmitting power output from the transmission 20.

As shown in fig. 1 and 2, a steering wheel 25 for steering the traveling body 5 (front wheels 23), an engine cover 26, and a steering column 27 are provided in front of the driver's seat 3. A fuel tank or the like is housed in the engine cover 26. The prime mover 18 is disposed below the engine cover 26. The steering column 27 covers a steering column or the like that supports the steering wheel 25.

As shown in fig. 1, a preliminary seedling stage 28 on which a seedling tray 8 having seedlings 7 is placed in advance is arranged on the side of the engine cover 26. The preliminary seedling stage 28 has a multistage seedling placement portion 28A provided on the left and right sides of the engine cover 26. The operator 2 can take out the seedling tray 8 from the preliminary seedling stage 28 and supply the seedling tray to the transplanting machine 4 (seedling placement stage 9).

As shown in fig. 1 and 2, the traveling body 5 has a floor 29 disposed below the driver's seat 3. The floor 29 has a front pedal 29a at the front for the operator 2 seated in the driver's seat 3 to place his feet. The front pedal 29a is disposed forward and downward of the driver's seat 3. A transmission case 20 is disposed below the front pedal 29a. A seat cover 30 is provided behind the front pedal 29a and below the driver's seat 3 to cover a portion 22A (see fig. 4) of the support body 22 that supports the driver's seat 3.

As shown in fig. 1 to 5, an empty tray receiving portion 15 is provided at the rear of the seat cover 30, and the empty tray receiving portion 15 can receive the empty seedling tray 8 sent from the empty tray guide 14. The upper guide portion 14c is located above the empty tray receiving portion 15 and extends toward the empty tray receiving portion 15. The empty tray receiving unit 15 is provided on the rear side of the driver seat 3 and on the front side of the seedling placement table 9. In other words, the empty tray receiving portion 15 is provided between the driver seat 3 and the empty tray guide 14 (seedling placement table 9). This prevents the empty Miao Tuopan fed from the empty tray guide 14 from falling downward from between the driver seat 3 and the empty tray guide 14 (seedling placement table 9). The empty tray receiving portion 15 is provided above the front pedal 29a and below the driver seat 3. Therefore, the empty tray receiving portion 15 is provided at a height capable of satisfactorily receiving the empty seedling tray 8 sent out from the empty tray guide 14. Further, since the upper guide portion 14c is formed in an inclined shape with a high rear and a low front and extends toward the empty tray receiving portion 15 side, the empty Miao Tuopan can be satisfactorily sent out to the empty tray receiving portion 15. The rear end of the empty tray receiving portion 15 is located below the upper rear end of the empty tray guide 14. Specifically, the rear end of the empty tray receiving portion 15 overlaps the rear end of the empty tray guide 14 in a plan view. This prevents the empty Miao Tuopan fed from the empty tray guide 14 from falling downward between the empty tray guide 14 and the empty tray receiving portion 15, and allows the empty tray receiving portion 15 to receive the empty seedling tray 8.

As shown in fig. 3 and 5, the empty tray receiving portion 15 includes an extension portion (first receiving portion) 32 at the rear of the bottom plate 29 and a plurality of rear pedals (second receiving portions) 33 disposed at the rear of the extension portion 32. The protruding portion 32 is provided at a position higher than the front pedal 29a, and is provided rearward of the seat cover 30. Specifically, the rear lower end of the seat cover 30 protrudes rearward. The left portion of the protruding portion 32 protrudes leftward from the seat cover 30, and the right portion protrudes rightward from the seat cover 30. The left and right parts of the protruding portion 32 are connected to the front pedal 29a via the inclined portion 29 b. The inclined portion 29b protrudes in an inclined direction that moves upward as going rearward from the rear of the front pedal 29 a. The plurality of rear pedals 33 are disposed behind the protruding portion 32 at substantially the same height position as the protruding portion 32.

The plurality of rear pedals 33 includes a first rear pedal 33R and a second rear pedal 33L. The first rear pedal 33R is disposed rearward of the right portion of the extension 32, and the second rear pedal 33L is disposed rearward of the left portion of the extension 32. The first rear pedal 33R and the second rear pedal 33L are supported by the body 16 (body frame 21) via a frame member (referred to as a pedal frame) 34.

As shown in fig. 4, the pedal frame 34 has first to third frame members 34A to 34C. The first frame member 34A is disposed between the rear pedal 33 and the extension 32 so as to extend in the body width direction K2. The second frame member 34B is fixed to the body frame 21 at a lower portion thereof, and the first frame member 34A is fixed at an upper portion thereof. The third frame member 34C protrudes rearward from the first frame member 34A. The third frame member 34C is disposed on the lower surface side of the rear pedal 33, and supports the rear pedal 33 from below. The third frame members 34C are provided in plural numbers, and are provided on the left and right portions of the first rear pedal 33R and the second rear pedal 33L, respectively.

The rear pedal 33 is disposed in front of the seedling stage 9. Therefore, when the operator 2 supplies (supplements) the seedling tray 8 to the seedling stage 9, the operator can put the foot on the rear pedal 33, and can easily supplement the seedling tray 8 by putting the foot on the rear pedal 33.

As shown in fig. 2 and 5, the transplanting machine 4 of the present embodiment has two (a plurality of) seedling stages 9, a first rear pedal 33R is disposed in front of one of the seedling stages 9 (a first seedling stage 9R), and a second rear pedal 33L is disposed in front of the other seedling stage 9 (a second seedling stage 9L).

The first rear pedal 33R and the second rear pedal 33L may be formed continuously. The rear pedal 33 may be formed of one member. In addition, when the seedling placement table 9 is one, the rear step 33 is provided one. In the case where three or more seedling stages 9 are provided, the number of the rear steps 33 may be set to correspond to the number of the seedling stages 9, or one rear step 33 may be provided in common to the respective seedling stages 9.

Next, the transplanting machine 4 will be described in detail.

As shown in fig. 1 and 2, the transplanting work machine 4 has a transplanting frame 36. As shown in fig. 2, the transplanting frame 36 has a main frame 37 and a plurality of unit frames 38. The plurality of unit frames 38 includes a first unit frame 38R and a second unit frame 38L.

As shown in fig. 8 to 10, the main frame 37 includes first to twelfth frames 39 to 50. The first frame 39 is disposed at the front of the main frame 37. The first frame 39 has a first pillar portion 39a on the right side, a second pillar portion 39b on the left side, and a connecting portion 39c connecting the upper portions of the first pillar portion 39a and the second pillar portion 39b to each other. The first and second pillar portions 39a and 39b are folded forward at the middle in the vertical direction. Specifically, the lower portions of the first and second pillar portions 39a and 39b are linear in the vertical direction, and the upper portions thereof are inclined so as to shift forward as going upward. The lower portion of the second pillar portion 39b protrudes downward from the lower end of the first pillar portion 39 a.

The second frame 40 is disposed below the first and second stay portions 39a and 39b so as to extend in the body width direction K2. The lower end of the second pillar portion 39b is coupled to the second frame 40. The right portion of the second frame 40 protrudes rightward from the first pillar portion 39a, and the left portion protrudes leftward from the second pillar portion 39 b. The third frame 41 connects the lower portion of the first pillar portion 39a with the second frame 40.

The fourth frame 42 protrudes rearward from a middle portion in the up-down direction of the first frame 39. Specifically, the fourth frame 42 has first to third portions 42a to 42c. The front portion of the first portion 42a is connected to the middle portion of the first pillar portion 39a in the up-down direction and protrudes rightward from the first pillar portion 39 a. The rear portion extends rearward from the outer end of the front portion of the first portion 42a from the middle portion of the first portion 42 a. The front portion of the second portion 42b is connected to the lower portion of the second pillar portion 39b and protrudes leftward from the second pillar portion 39 b. The rear portion extends rearward from the front outer end of the second portion 42b from the middle portion of the second portion 42 b. The third portion 42c connects rear end portions of the first portion 42a and the second portion 42b to each other.

The front portion of the fifth frame 43 is formed in a horizontal shape and is connected to the right portion of the second frame 40. The fifth frame 43 is formed in an inclined shape that moves upward as going rearward from the middle portion to the rear portion, and the rear end portion is connected to the third portion 42c of the fourth frame 42.

The front portion of the sixth frame 44 is formed in a horizontal shape and is connected to the left portion of the second frame 40. The sixth frame 44 is formed in an inclined shape that moves upward as going rearward from the middle portion to the rear portion, and the rear end portion is connected to the third portion 42c of the fourth frame 42.

The seventh frame 45 connects the first portion 42a and the second portion 42b of the fourth frame 42. Specifically, the portion (left portion) on the inner side of the body in the front portion of the first portion 42a is connected to the portion (right portion) on the inner side of the body in the front portion of the second portion 42 b.

The eighth frame 46 connects the first portion 42a and the second portion 42b of the fourth frame 42. Specifically, the eighth frame 46 connects the connecting piece 51R fixed to the middle part of the first portion 42a in the machine body front-rear direction and the connecting piece 51L fixed to the middle part of the second portion 42b in the machine body front-rear direction.

The ninth frame 47 connects the lower portion of the second pillar portion 39b with the third frame 41.

The tenth frame 48 is disposed at a substantially central portion in the body width direction K2 of the main frame 37, and connects the ninth frame 47 to the third portion 42c of the fourth frame 42.

The eleventh frame 49 and the twelfth frame 50 are disposed at intervals in the body width direction K2 in the center portion of the front portion of the main frame 37 in the body width direction K2. The eleventh frame 49 and the twelfth frame 50 connect the seventh frame 45 and the second frame 40.

A first spring hanger 52R is provided at an upper portion of the first leg portion 39a, and a second spring hanger 52L is provided at an upper portion of the second leg portion 39 b.

A fixing plate 53 is provided at an upper portion between the eleventh frame 49 and the twelfth frame 50. The rolling shaft 54 is attached to the fixing plate 53 so as to protrude forward. The rolling shaft 54 has a rolling axis X1 extending in the machine body front-rear direction K1. The rolling shaft 54 is disposed at a substantially central portion of the main frame 37 in the body width direction K2.

A rail member (referred to as a first rail) 56 extending in the body width direction K2 is disposed on the rear side of the seventh frame 45. The first rail 56 is formed of a channel-shaped steel member, and opens rearward. The plurality of strut members 55 are fixed to the upper surface of the first rail 56 at predetermined intervals in the body width direction K2. Each pillar member 55 is bolted to the seventh frame 45.

A rail member (referred to as a second rail) 58 extending in the body width direction K2 is disposed on the front side of the eighth frame 46. The second rail 58 is formed of a channel-shaped steel member and is open toward the front. A plurality of strut members 57 are fixed to the second rail 58. Each pillar member 57 is bolted to the eighth frame 46.

A support bracket (referred to as a first support bracket) 59 is fixed to the front portion of the sixth frame 44. The first support bracket 59 is vertically disposed on the sixth frame 44. A support bracket (referred to as a second support bracket) 60 is fixed to the front portion of the fifth frame 43. The second support bracket 60 is vertically disposed on the fifth frame 43.

A plurality of connection plates 61 are provided at the rear of the main frame 37. The plurality of webs 61 includes a first web 61R and a second web 61L. The first connecting plate 61R is fixed to the right portion of the third portion 42c of the fourth frame 42, and the second connecting plate 61L is fixed to the left portion of the third portion 42 c.

As shown in fig. 2, the first unit frame 38R is disposed at the right portion of the main frame 37, and the second unit frame 38L is disposed at the left portion of the main frame 37. Specifically, the first unit frame 38R and the second unit frame 38L are disposed between the first portion 42a and the second portion 42b of the fourth frame 42, the first unit frame 38R is disposed on the right side between the first portion 42a and the second portion 42b, and the second unit frame 38L is disposed on the left side between the first portion 42a and the second portion 42 b. A first connecting plate 61R is disposed behind the first unit frame 38R, and a second connecting plate 61L is disposed behind the second unit frame 38L.

As shown in fig. 1, the first unit frame 38R and the second unit frame 38L are provided with a seedling taking-out device 11, a transplanting body 12, and a soil covering wheel (ground roller) 62, respectively.

The seedling taking-out device 11 is provided in plurality, and the plurality of seedling taking-out devices 11 includes a first seedling taking-out device 11R provided in the first unit frame 38R and a second seedling taking-out device 11L provided in the second unit frame 38L.

The transplanting body 12 is provided in plurality, and the plurality of transplanting bodies 12 includes a first transplanting body 12R provided in the first unit frame 38R and a second transplanting body 12L provided in the second unit frame 38L. The first transplanting body 12R constitutes a part of a first transplanting device 35R (see fig. 28) for transplanting the seedlings 7 taken out by the first seedling taking-out device 11R to the field 6. The second transplanting body 12L constitutes a part of a second transplanting device 35L (see fig. 28) for transplanting the seedlings 7 taken out by the second seedling taking-out device 11L to the field 6.

The soil covering wheel 62 includes a first soil covering wheel 62R provided to the first unit frame 38R and a second soil covering wheel 62L provided to the second unit frame 38L. Two first and second soil covering wheels 62R and 62L are provided, respectively. The two first soil covering wheels 62R are arranged in the machine body width direction K2. The two second soil covering wheels 62L are also arranged in the machine body width direction K2. The first soil covering wheel 62R is disposed behind the first transplanting body 12R, rolls on the left and right sides of the seedling 7 transplanted by the first transplanting body 12R, and soil the plant edge of the seedling 7 and press the plant edge. The second soil covering wheel 62L is disposed behind the second transplanting body 12L, rolls on the left and right sides of the seedling 7 transplanted by the second transplanting body 12L, and soil the plant edge of the seedling 7 and press the plant edge.

As shown in fig. 1, the first unit frame 38R, the first seedling taking-out device 11R, the first transplanting body 12R (first transplanting device 35R), and the first soil covering wheel 62R constitute a first transplanting unit 63R. The second unit frame 38L, the second seedling taking-out device 11L, the second transplanting body 12L (the second transplanting device 35L), and the second soil covering wheel 62L constitute a second transplanting unit 63L.

The number of the transplanting units may be one or three or more. The number of seedling placement stations is also determined based on the number of transplanting units.

As shown in fig. 11 and 12, the first unit frame 38R has a frame body 64 having a rectangular shape in plan view. The frame main body 64 includes a first side frame 65A and a second side frame 65B arranged in opposition with a gap therebetween in the machine body width direction, a front frame 66 (referred to as a first front frame) that connects front portions of the first side frame 65A and the second side frame 65B to each other, a rear frame 67 that connects rear portions of the first side frame 65A and the second side frame 65B to each other, and a second front frame 68 that is arranged behind the first front frame 66 and connects the first side frame 65A and the second side frame 65B to each other. The first side frame 65A is disposed outside the body of the second side frame 65B.

The second unit frame 38L also has a frame body 64 having the same structure as the first unit frame 38R.

A first unit bracket 69 and a second unit bracket 70 disposed at intervals in the body width direction K2 are provided at the front portion of each frame main body 64. The upper parts of the first and second unit brackets 69 and 70 are fixed to the first and second front frames 66 and 68, and protrude downward from the frame main body 64. The first unit bracket 69 is disposed on the outer side of the frame body 64, and the second unit bracket 70 is disposed on the inner side of the frame body 64.

As shown in fig. 11, the drive main shaft 71 is disposed at the front of the first unit frame 38R (first transplanting unit 63R) and the second unit frame 38L (second transplanting unit 63L) so as to extend in the machine body width direction K2. In addition, the drive main shaft 71 is provided in the front portion of the main frame 37 so as to extend in the body width direction.

The front portions of the first unit frame 38R and the second unit frame 38L are supported on the drive main shaft 71 so as to be movable in the machine body width direction K2. Specifically, the drive main shaft 71 has an axial center extending in the machine body width direction K2, and is provided from the front portion of the fifth frame 43 to the front portion of the sixth frame 44. The drive main shaft 71 is rotatably supported on the left side by the first support bracket 59 via a bearing 72, and rotatably supported on the right side by the second support bracket 60 via a bearing 73. The first unit frame 38R and the second unit frame 38L are disposed above the drive spindle 71. The drive main shaft 71 passes through the lower portions of the first unit bracket 69 and the second unit bracket 70 of the first unit frame 38R and the second unit frame 38L, and is rotatably supported by bearings 74 provided to the first unit bracket 69 and the second unit bracket 70. Thereby, the front portions of the first unit frame 38R and the second unit frame 38L are supported on the drive main shaft 71 so as to be movable in the machine body width direction K2.

As shown in fig. 11 and 13, the first unit frame 38R has a first mounting plate 76R mounted to the first connecting plate 61R, and the second unit frame 38L has a second mounting plate 76L mounted to the second connecting plate 61L.

As shown in fig. 13 and 14, the first attachment plate 76R is attached to the rear frame 67 of the first unit frame 38R by means of bolts 77A and nuts 77B so as to be positionally adjustable in the machine body width direction K2. The second attachment plate 76L is attached to the rear frame 67 of the second unit frame 38L with a position adjustable in the body width direction K2 by means of bolts 77A and nuts 77B. The first attachment plate 76R is attached to the first connection plate 61R by a bolt 78A and a nut 78B so as to be positionally adjustable in the machine body width direction K2. The second attachment plate 76L is attached to the second coupling plate 61L by means of bolts 78A and nuts 78B so as to be positionally adjustable in the machine body width direction K2. By changing the mounting position of the first mounting plate 76R in the body width direction K2 of the first connecting plate 61R, the first unit frame 38R can be adjusted in position in the body width direction K2 with respect to the main frame 37. By changing the mounting position of the second mounting plate 76L in the body width direction K2 with respect to the second connecting plate 61L, the second unit frame 38L can be adjusted in position in the body width direction K2 with respect to the main frame 37. That is, the first transplanting unit 63R and the second transplanting unit 63L are supported by the main frame 37 so as to be capable of position adjustment in the body width direction K2 independently of each other.

By adjusting the positions of the first unit frames 38R and the second unit frames 38L in the body width direction K2, the row spacing W1 (see fig. 11) which is the interval between the first transplanting body 12R and the second transplanting body 12L in the body width direction K2 (the interval between the seedlings 7 transplanted by the first transplanting body 12R and the seedlings 7 transplanted by the second transplanting body 12L) can be adjusted.

As shown in fig. 13, a mark 78 is provided on the first mounting plate 76R and the second mounting plate 76L. The first connecting plate 61R and the second connecting plate 61L are provided with a row interval display 79. The line interval display 79 is written with a number indicating the line interval W1. By matching the mark 78 with the number of the line interval display section 79, the adjustment of the line interval W1 can be easily performed.

As shown in fig. 11 and 12, the drive main shaft 71 has a power take-out portion (referred to as a first power take-out portion) 80 for taking out power on the end side in the machine body width direction K2. The first power take-out portion 80 is provided on the left end side of the drive main shaft 71. The water pump 82 disposed in front of the first power take-out portion 80 can be driven by the power transmitted from the first power take-out portion 80. In addition, the drive main shaft 71 has another power take-out portion (referred to as a second power take-out portion) 81 different from the first power take-out portion 80 on an end portion side (right end portion side) on the opposite side from the first power take-out portion 80. The second power take-out unit 81 can transmit power to, for example, various equipment selectively attached to the transplanting work machine 4 to drive the various equipment. The first power take-out portion 80 and the second power take-out portion 81 are formed with, for example, splines (or key grooves, etc.), and the power of the drive main shaft 71 can be taken out from the first power take-out portion 80 and the second power take-out portion 81 by spline-coupling (or key coupling, etc.) the transmission members.

As shown in fig. 12, an input sprocket 83 as an input member for inputting rotational power to the drive spindle 71 is provided integrally rotatably on the center side of the drive spindle 71. The input sprocket 83 is supported by a bearing 84, and the bearing 84 is mounted on a strut member 85 fixed to the tenth frame 48.

Fig. 15 shows a side view of the power input portion 86 that inputs power to the drive main shaft 71, and fig. 16 shows a plan view of a part of the power input portion 86 after being unfolded.

As shown in fig. 15 and 16, the power input unit 86 includes an input shaft 87, a gear transmission 88, and a winding transmission 89 including the input sprocket 83.

As shown in fig. 1, a PTO shaft (power take-off shaft) protruding rearward from the transmission case 20 transmits power to an input shaft 87. Specifically, a first joint shaft 92 is coupled to the PTO shaft 90 via a transplanting clutch (inter-plant distance clutch) 91, and a second joint shaft 93 is coupled to the first joint shaft 92. The second joint shaft 93 is coupled to the input shaft 87. The transplanting clutch 91 can intermittently transmit power output from the PTO shaft 90 to the input shaft 87. When the transplanting clutch 91 is disconnected, the operations of the transplanting body 12, the seedling taking-out device 11, and the like are stopped, and when the transplanting clutch is connected, the operations of the transplanting body 12, the seedling taking-out device 11, and the like are restarted. Therefore, by adjusting the cut-off time of the transplanting clutch 91, seedlings 7 can be transplanted at a predetermined plant distance.

As shown in fig. 15 and 16, the gear transmission mechanism 88 includes a first bevel gear 88A integrally rotatably fitted to the input shaft 87, and a second bevel gear 88B engaged with the first bevel gear 88A. The winding transmission mechanism 89 has a first transmission sprocket 94 capable of rotating integrally with the second bevel gear 88B, a second transmission sprocket 95 to which power is transmitted from the first transmission sprocket 94, and a third transmission sprocket 96 to which power is transmitted from the second transmission sprocket 95. Power is transmitted from the third drive sprocket 96 to the input sprocket 83.

As shown in fig. 17 to 19, a plurality of the irrigation pumps 82 are provided according to the number of the transplanting bodies 12. Therefore, in the case where the transplanting body 12 is one, the irrigation pump 82 is also provided one. The plurality of water pumps 82 are disposed longitudinally in front of the first power take-out portion (power take-out portion) 80 and further inward of the body than the end portion of the main frame 37 in the body width direction K2. In the present embodiment, the plurality of water pumps 82 includes a first water pump 82R that supplies water to the first transplanting body 12R and a second water pump 82L that supplies water to the second transplanting body 12L. The irrigation pump 82 is formed of a reciprocating pump having a cylinder 97 and a piston 98 reciprocating within the cylinder 97. The cylinder 97 has an axial center in the up-down direction. Thus, the piston 98 reciprocates in the up-down direction.

Power is transmitted from the first power take-off 80 to the irrigation pump 82 by the irrigation transmission mechanism 99. A water pump 82 and a water pump transmission mechanism 99 are mounted to a pump bracket 110 provided to the main frame 37.

The suction portion 114 and the discharge portion 115 are provided in the pump head 111R of the first water pump 82R and the pump head 111L of the second water pump 82L. By reciprocating the piston 98 up and down, water is sucked from the suction portion 114, and the sucked water is discharged from the discharge portion 115. The suction portion 114 is provided at the front of the pump head 111R and the pump head 111L. The discharge portion 115 is provided at the rear of the pump head 111R and the pump head 111L.

As shown in fig. 1 and 2, a water tank T for storing water for irrigating seedlings 7 is disposed in front of the traveling body 5. The water filling tank T is provided in plurality. The plurality of water tanks T include first and second water tanks T1 and T2 disposed on the right side of the engine cover 26, and third and fourth water tanks T3 and T4 disposed on the left side of the engine cover 26. The second water tank T2 is disposed outside the body of the first water tank T1 and below the first water tank T1. The first and second water tanks T1 and T2 are supported by the body 16 via the first tank bracket 116. The fourth water tank T4 is disposed outside the body of the third water tank T3 and below the third water tank T3. The third tank T3 and the fourth tank T4 are supported by the body 16 via the second tank bracket 117.

As shown in fig. 2, the first and second water tanks T1 and T2 are connected to the suction portion 114 of the first water pump 82R via a suction hose 119R. The third tank T3 and the fourth tank T4 are connected to the suction portion 114 of the second pump 82L via a suction hose 119L.

As shown in fig. 20, a first irrigation pipe 120R (irrigation pipe 120) is disposed on the upper side of the first transplanting body 12R. A second irrigation pipe 120L (irrigation pipe 120) is disposed on the upper side of the second transplanting body 12L. The discharge portion 115 of the first water pump 82R is connected to the first water pipe 120R via a discharge hose 122R, and the discharge portion 115 of the second water pump 82L is connected to the second water pipe 120L via a discharge hose 122L. Therefore, the water discharged from the first water pump 82R is supplied to the first transplanting body 12R, and the water discharged from the second water pump 82L is supplied to the second transplanting body 12L.

The first irrigation pipe 120R is attached to a support plate 121R (support plate 121) that supports the first transplanting body 12R, and the second irrigation pipe 120L is attached to a support plate 121L (support plate 121) that supports the second transplanting body 12L.

As shown in fig. 1 and 21, the main frame 37 (transplanting machine 4) is mounted on the traveling body 5 via the machine mounting device 123. The work machine mounting device 123 includes a mounting frame 124 for detachably mounting the main frame 37 (transplanting work machine 4) and a work machine lifting mechanism 125 for lifting and lowering the main frame 37 (transplanting work machine 4).

As shown in fig. 21, the mounting frame 124 includes a bearing body 128, and the bearing body 128 supports the rolling shaft 54 rotatably about the rolling axis X1. The main frame 37 is swingable about the rolling axis X1 with respect to the mount frame 124. The first transplanting body 12R and the second transplanting body 12L are arranged in the machine body width direction K2 with the rolling axis X1 interposed therebetween.

The work machine lifting mechanism 125 includes a connecting link mechanism 129 that connects the traveling body 5 and the mounting frame 124, and a lifting drive body 130 that lifts and drives the transplanting work machine 4.

The connecting link mechanism 129 is constituted by parallel links, and includes an upper link 129A and a lower link 129B disposed below the upper link 129A. The front portion of the upper link 129A is rotatably coupled to the rear portion of the machine body 16 (the machine body frame 21) about the axis in the machine body width direction K2. The rear portion of the upper link 129A is rotatably coupled to the mounting frame 124 about the axis in the body width direction K2. The front portion of the lower link 129B is rotatably coupled to the rear portion of the machine body 16 (the machine body frame 21) about the axis in the machine body width direction K2. The rear portion of the lower link 129B is rotatably coupled to the mounting frame 124 about the axis in the body width direction K2. The transplanting work machine 4 can be moved up and down in parallel by the connecting link mechanism 129.

The lift driving body 130 is, for example, a lift cylinder constituted by a hydraulic cylinder. One end side of the lift cylinder 130 (bottom side of the cylinder body 130A) is rotatably coupled to the rear portion of the machine body 16 (the machine body frame 21) about the axis in the machine body width direction K2. The other end side of the lift cylinder 130 (the connecting body 130C attached to the front end side of the piston rod 130B) is rotatably connected to the mounting frame 124 around the axis in the body width direction K2. One end side of the lift cylinder 130 is pivotally supported concentric with the front portion of the upper link 129A, and the other end side is pivotally supported concentric with the rear portion of the lower link 129B.

As shown in fig. 21, the transplanting machine 1 includes a control valve 132 for controlling the lift cylinder 130. The control valve 132 is controlled by the control device 131. The control valve 132 is formed of an electromagnetic valve, and is configured of a three-position directional switching valve that can be switched to a neutral position, a raised position, and a lowered position, for example. The control valve 132 is connected to the control device 131 by electric power wiring or the like, and is connected to the cylinder body 130A of the lift cylinder 130, the hydraulic pump 133, and the hydraulic oil tank 134 via hydraulic lines. When a raising command signal is sent from the control device 131 to the control valve 132, the control valve 132 is switched to the raising position, the hydraulic oil from the hydraulic pump 133 is supplied to the bottom side of the cylinder main body 130A, the raising/lowering cylinder 130 is extended, and the main frame (the transplanting work machine 4) is raised. When a lowering command signal is sent from the control device 131 to the control valve 132, the control valve 132 is switched to the lowering position, the hydraulic oil is supplied to the rod side of the cylinder body 130A, the lift cylinder 130 is contracted, and the main frame 37 is lowered.

The elevation driving body 130 may be constituted by an electric cylinder (electric actuator) or an electric hydraulic cylinder (electric hydraulic actuator). The electric cylinder is an electrically driven cylinder, and is an actuator that rotates a ball screw around an axis by an electric motor, moves a ball screw nut, and advances and retreats a rod by the movement of the ball screw nut, for example. The electro-hydraulic cylinder is an actuator in which an electric motor, an oil tank, a hydraulic pump, a valve, a hydraulic cylinder, and the like are integrated, and is an actuator in which the hydraulic pump is rotated by rotation of the electric motor and the valve is switched to operate the hydraulic cylinder.

As shown in fig. 22, the transplanting machine 1 has a rolling mechanism 135, and the rolling mechanism 135 swings the transplanting machine 4 around a rolling axis X1. The rolling mechanism 135 includes a rolling motor 136, a rolling roller 137, and a cable 138. The rolling motor 136 and the rolling roller 137 are provided to the mounting frame 124 (work implement mounting device 123). The rolling motor 136 and the rolling roller 137 are disposed above the rolling shaft 54 and correspond to the center portion of the main frame 37 in the body width direction K2. The scroll roller 137 is disposed above the scroll motor 136. The rolling motor 136 is constituted by an electric motor capable of forward and reverse rotation. The rolling motor 136 is connected to the control device 131. The control device 131 controls the scroll mechanism 135.

As shown in fig. 23 and 24, the power of the rolling motor 136 is transmitted to the rolling roller 137 via a transmission mechanism (gear transmission mechanism) 139. The transmission 139 has a first gear 139A rotationally driven by the power of the rolling motor 136 and a second gear 139B meshed with the first gear 139A. The second gear 139B has a larger diameter than the first gear 139A and rotates integrally with the roller 137. Accordingly, the rolling roller 137 is rotated in the forward and reverse directions by the power of the rolling motor 136.

The rope 138 is formed of, for example, a wire rope or a cable, and is wound around the roller 137. One side (right side) 138R of the cable 138 extends from the roller 137 to one side (right side), and the other side (left side) 138L extends from the roller 137 to the other side (left side). One side 138R of the rope 138 is connected to one side in the machine body width direction K2 of the transplanting machine 4, and the other side 138L is connected to the other side in the machine body width direction K2 of the transplanting machine 4. Specifically, as shown in fig. 22, one side 138R of the cable 138 is connected to one end of the first buffer spring 140R, and the other side 138L is connected to one end of the second buffer spring 140L. The other end side of the first buffer spring 140R is hooked to the first spring hanger 52R of the main frame 37, and the other end side of the second buffer spring 140L is hooked to the second spring hanger 52L. That is, one end side of the cable 138 is connected to one side in the body width direction K2 of the main frame 37 via the first buffer spring 140R, and the other end side is connected to the other side in the body width direction K2 of the main frame 37 via the second buffer spring 140L.

When the roller 137 is rotated in the forward and reverse directions by the roller motor 136, for example, when rotated in the clockwise direction in fig. 22, the left side of the cable 138 is pulled. Thereby, the main frame 37 (transplanting machine 4) swings around the rolling axis X1 in the clockwise direction in fig. 22. When the roller 137 is rotated in the other direction (counterclockwise in fig. 22) by the roller motor 136, the right side of the cable 138 is pulled. Thereby, the main frame 37 (transplanting machine 4) swings around the rolling axis X1 in the counterclockwise direction in fig. 22.

The main frame 37 (transplanting machine 4) is swingable about the rolling axis X1.

As shown in fig. 23, a detection sensor 141 is provided in the mounting frame 124, and the detection sensor 141 detects a large swing of the transplanting work machine 4 about the rolling axis X1. The detection sensor 141 includes a first limit switch 141R that detects the clockwise swing of the transplanting work machine 4 and a second limit switch 141L that detects the counterclockwise swing of the transplanting work machine 4. One of the plurality of teeth of the second gear 139B is a detection tooth 142 protruding radially outward of the other teeth, and the detection tooth 142 is brought into contact with a contact of the first limit switch 141R or the second limit switch 141L, whereby a large swing of the transplanting work machine 4 about the rolling axis X1 is detected. When detecting the detection tooth 142, the first limit switch 141R or the second limit switch 141L, for example, stops driving of the rolling motor 136.

As shown in fig. 2, the transplanting work machine 4 includes a first sensing roller 126R (sensing roller 126) disposed on the front side of the first transplanting body 12R, and a second sensing roller 126L (sensing roller 126) disposed on the front side of the second transplanting body 12L. The first sensing roll 126R is disposed at the first unit frame 38R. That is, the first transplanting unit 63R includes a first sensing roller 126R. The second sensing roller 126L is provided to the second unit frame 38L. That is, the second transplanting unit 63L includes a second sensing roller 126L.

As shown in fig. 22, the first sensing roll 126R is a member for detecting the height of the first transplanting surface 144R, which is the transplanting surface of the field 6 corresponding to the first transplanting body 12R. In other words, the first sensing roller 126R is a means for detecting the height of the first ridge 143R of the transplanted seedling 7 using the first transplanted body 12R.

The second sensing roller 126L is a member for detecting the height of the second transplanting surface 144L, which is the transplanting surface of the field 6 corresponding to the second transplanting body 12L. In other words, the second sensing roller 126L is a means for detecting the height of the second ridge 143L of the transplanted seedling 7 using the second transplanted body 12L.

The first sensing roller 126R rolls on the first transplanting face 144R and moves up and down following the change in the height of the first transplanting face 144R. The second sensing roller 126L rolls on the second transplanting face 144L and moves up and down following the change in the height of the second transplanting face 144L.

As shown in fig. 25, the first sensing roller 126R is supported by the first roller support mechanism 145R so as to be capable of swinging up and down on the first unit frame 38R. The second sensing roller 126L is supported by the second roller support mechanism 145L so as to be capable of swinging up and down on the second unit frame 38L.

The first roller support mechanism 145R includes a first roller bracket 146R that supports the first sensing roller 126R so as to be capable of swinging up and down, and a first biasing spring (spring) 147R that biases the first roller bracket 146R downward to press the first sensing roller 126R against Tian Demian (the ground). The first roller bracket 146R has a first arm 148A, a second arm 148B, and a connecting member 148C. The first arm 148A is disposed on the outer side of the first sensing roll 126R, and the second arm 148B is disposed on the inner side of the first sensing roll 126R. The first arm 148A and the second arm 148B protrude forward from the first sensing roll 126R. The connecting member 148C connects the first arm 148A and the second arm 148B on the front side of the first sensing roller 126R.

As shown in fig. 25 and 27, a support bracket 149 is provided on the first unit frame 38R. The support bracket 149 has a fixing plate 149A provided throughout the first unit bracket 69 and the second unit bracket 70 and a mounting plate 149B fixed to the fixing plate 149A. The mounting plate 149B is disposed in front of the first sensing roller 126R. The mounting plate 149B is formed to have a width corresponding to the width of the first sensing roll 126R in the body width direction K2. The mounting plate 149B has a first side plate portion 149a on the outer end side in the body width direction K2 and a second side plate portion 149B on the inner end side in the body width direction K2. The front portions of the first arm 148A and the second arm 148B are pivotally supported by the first side plate portion 149a and the second side plate portion 149B via a pivot 150. The first sensing roller 126R is rotatably supported at the rear portions of the first arm 148A and the second arm 148B by a roller shaft 151 having an axial center extending in the body width direction K2.

As shown in fig. 25 and 26, the first biasing spring 147R is formed of a compression coil spring, and is fitted to the outside of the lever member 152. The lower portion of the lever member 152 is pivotally supported by a lever pivot 153 fixed to the second arm 148B. An upper portion of the lever member 152 is supported by a support stay 154 fixed to the second side frame 65B of the first unit frame 38R so as to be movable up and down along the axial direction of the lever member 152. The first biasing spring 147R is sandwiched in compression between the spring receiving plate 155 attached to the lever member 152 and the support stay 154.

The second roller support mechanism 145L includes a second roller bracket 146L that supports the second sensing roller 126L so as to be capable of swinging up and down, and a second biasing spring (spring) 147L that biases the second roller bracket 146L downward to press the second sensing roller 126L against Tian Demian (the ground). The second roller bracket 146L is configured in the same manner as the first roller bracket 146R. The second roller bracket 146L is supported by the second unit frame 38L by a support bracket 149, and the second sensing roller 126L is rotatably supported by a roller shaft 151. The second biasing spring 147L is formed of a compression coil spring, and is fitted to the lever member 152 on the second unit frame 38L side. The lever member 152 is pivotally supported on the second roller bracket 146L, and is supported by a support stay 154 fixed to the second side frame 65B of the second unit frame 38L.

The height (height change) of the first transplanting surface 144R is detected by the first sensor mechanism 156R as the amount of swing of the first roller bracket 146R (the amount of change in the position of the first sensor roller 126R in the up-down direction). The height (height change) of the second transplanting surface 144L is detected by the second sensor mechanism 156L as the amount of swing of the second roller bracket 146L (the amount of change in the position of the second sensing roller 126L in the up-down direction).

As shown in fig. 25 and 27, the first sensor mechanism 156R includes a first height detection sensor 157R and a first detection arm 159R. The first height detection sensor 157R is formed by a potentiometer. The first height detection sensor 157R is mounted to a sensor bracket 158 fixed to the second side plate portion 149b on the first unit frame 38R side. The first detection arm 159R has an arm main body 160 and an abutment 161. The front portion of the arm main body 160 is coupled to a rotation detecting member of the first height detecting sensor 157R, and is rotatable together with the rotation detecting member. The abutment 161 is fixed to the rear of the arm body 160. The abutment 161 is formed of a pin, and is abutted against the second arm 148B of the first roller bracket 146R. The arm main body 160 can swing up and down concentrically with the first roller bracket 146R, and the first detection arm 159R swings up and down together with the first roller bracket 146R, whereby the first height detection sensor 157R detects the swing amount of the first roller bracket 146R. This enables detection of the height (height change) of the first transplanting face 144R.

The second sensor mechanism 156L has a second height detection sensor 157L and a second detection arm 159L. The second height detection sensor 157L is also formed by a potentiometer. The second height detection sensor 157L is mounted to a sensor bracket 158 fixed to the second side plate portion 149b on the second unit frame 38L side. The second detection arm 159L has an arm main body 160 and an abutment 161. The front portion of the arm main body 160 is coupled to a rotation detecting member of the second height detecting sensor 157L, and is rotatable together with the rotation detecting member. The abutment 161 is fixed to the rear portion of the arm body 160. The abutment 161 is formed of a pin, and is abutted against the second arm 148B of the second roller bracket 146L. The arm body 160 can swing up and down concentrically with the second roller bracket 146L, and the second detection arm 159L swings up and down together with the second roller bracket 146L, whereby the second height detection sensor 157L detects the swing amount of the second roller bracket 146L. Thereby, the height (height change) of the second transplanting face 144L can be detected.

As shown in fig. 25 and 26, a scraper 162 for scraping the first sensing roller 126R is provided in the first roller support mechanism 145R. The squeegee 162 is mounted to a squeegee bracket 163. The scraper bracket 163 is disposed to span the first sensing roller 126R and is fixed to the first roller bracket 146R. The second roller support mechanism 145L is also provided with a scraper 162 for scraping the second sensing roller 126L.

As shown in fig. 22, the first height detection sensor 157R and the second height detection sensor 157L are connected to the control device 131, and send detection values to the control device 131. The control device 131 obtains detection values detected by the first height detection sensor 157R and the second height detection sensor 157L.

When the first transplanting surface 144R and the second transplanting surface 144L have a height difference, the transplanting depth of the seedling 7 transplanted by the first transplanting body 12R and the transplanting depth of the seedling 7 transplanted by the second transplanting body 12L are different. Therefore, when the first transplanting surface 144R and the second transplanting surface 144L have a height difference, the transplanting work machine 4 is swung around the rolling axis X1 so that the first height H1, which is the height of the first transplanting body 12R relative to the first transplanting surface 144R (transplanting surface), and the second height H2, which is the height of the second transplanting body 12L relative to the second transplanting surface 144L (transplanting surface), become predetermined heights. Specifically, based on the detection values detected by the first sensor roller 126R and the second sensor roller 126L, the control device 131 calculates the height difference between the first height H1 and the second height H2, and swings the transplanting work machine 4 about the rolling axis X1 in a direction to reduce the height difference. In other words, control device 131 calculates the difference in height between first sensing roller 126R and second sensing roller 126L based on the detection values detected by first sensing roller 126R and second sensing roller 126L, and swings transplanting machine 4 about rolling axis X1 in a direction in which the difference in height between first sensing roller 126R and second sensing roller 126L is reduced.

More specifically, when the second transplanting face 144L is higher than the first transplanting face 144R, the first sensing roller 126R and the second sensing roller 126L may have a height difference. In this case, control device 131 swings transplanting machine 4 so as to raise the left side and lower the right side around rolling axis X1. Thereby, the transplanting depth of the seedling 7 transplanted by the first transplanting body 12R is made substantially the same as the transplanting depth of the seedling 7 transplanted by the second transplanting body 12L. When a height difference is provided in advance between the first height H1 and the second height H2 by the angle adjusting unit 194 described later, the transplanting work machine 4 is swung around the rolling axis X1 so as to return to the set height.

The controller 131 also lifts the transplanting work machine 4 based on the irregularities of the transplanting surface (field 6) detected by one of the first sensing roller 126R and the second sensing roller 126L, and calculates the difference in height between the first sensing roller 126R and the second sensing roller 126L based on the one sensing roller.

In the present embodiment, the first sensing roller 126R detects the irregularities of the first transplanting surface 144R, and the transplanting machine 4 is lifted and lowered according to the irregularities of the first transplanting surface 144R, so that the transplanting depth of the seedlings 7 in the machine body front-rear direction K1 (the longitudinal direction of the ridge) is set to the same depth. Specifically, the transplanting machine 4 is raised when the transplanting surface is raised, and the transplanting machine 4 is lowered when the transplanting surface is lowered. The height difference is calculated from the height of the second sensing roll 126L relative to the first sensing roll 126R with reference to the first sensing roll 126R. By calculating the height difference between the first sensing roller 126R and the second sensing roller 126L with reference to one of the first sensing roller 126R and the second sensing roller 126L, it is possible to stably perform rolling control for swinging the transplanting work machine 4 around the rolling axis X1.

Further, the height difference between the first sensing roller 126R and the second sensing roller 126L may be calculated based on the second sensing roller 126L by detecting the irregularities of the second transplanting surface 144L by the second sensing roller 126L and raising and lowering the transplanting work machine 4.

In the present embodiment, when the difference in height between the first sensing roller 126R and the second sensing roller 126L is smaller than a predetermined value, the height difference is absorbed by the free swing of the transplanting work machine 4 around the rolling axis X1 without performing the rolling control by the control device 131. When the difference in height between first transplanting surface 144R and second transplanting surface 144L is equal to or greater than a predetermined value, control device 131 causes scroll mechanism 135 to operate and controls scrolling.

As shown in fig. 28, a swing frame 164 is provided to be capable of swinging up and down in each of the first unit frame 38R and the second unit frame 38L. Since the first unit frame 38R and the second unit frame 38L are fixed to the main frame 37, the swing frame 164 can swing up and down with respect to the main frame 37 (the transplanting frame 36).

The swing frame 164 provided to the first unit frame 38R is referred to as a first swing frame 164R, and the swing frame 164 provided to the second unit frame 38L is referred to as a second swing frame 164L. Since the first swing frame 164R and the second swing frame 164L are formed of the same structure and are symmetrical left and right, the first swing frame 164R and the second swing frame 164L will be described together.

As shown in fig. 28 and 29, the swing frame 164 includes a first side frame 164A on the outer side of the machine body, a second side frame 164B on the inner side of the machine body, an intermediate frame 164C connecting front and rear intermediate portions of the first side frame 164A and the second side frame 164B to each other, a rear frame 164D connecting rear portions of the first side frame 164A and the second side frame 164B to each other, a first support portion 164E fixed to the front portion of the first side frame 164A by bolts, welding, or the like, and a second support portion 164F fixed to the front portion of the second side frame 164B by bolts, welding, or the like.

The first support portion 164E is rotatably supported by the first unit bracket 69 about a transverse axis (an axis extending in the machine body width direction), and the second support portion 164F is rotatably supported by the second unit bracket 70 about the transverse axis. Therefore, the rear portion of the swing frame 164 can swing up and down. Specifically, the transplanting drive shaft 165 is rotatably supported about the horizontal axis throughout the first unit bracket 69 and the second unit bracket 70, and the first support portion 164E and the second support portion 164F are rotatably supported by the transplanting drive shaft 165. The transmission gear 166 is integrally rotatably provided to the transplanting drive shaft 165, and the transplanting drive shaft 165 is rotated by transmitting rotational power from the drive main shaft 71 to the transmission gear 166.

As shown in fig. 28 and 29, a first transplanting lifting mechanism 167R (transplanting lifting mechanism 167) is provided to the first swing frame 164R, and the first transplanting body 12R is provided to be movable up and down in a reciprocating manner to the first transplanting lifting mechanism 167R. A second transplanting lifting mechanism 167L (transplanting lifting mechanism 167) is provided to the second swing frame 164L, and the second transplanting body 12L is provided to be movable up and down in a reciprocating manner to the second transplanting lifting mechanism 167L. The first transplanting body 12R and the first transplanting lifting mechanism 167R constitute a first transplanting device 35R (transplanting device 35), and the second transplanting body 12L and the second transplanting lifting mechanism 167L constitute a second transplanting device 35L (transplanting device 35).

The first soil covering wheel 62R is supported by a first swing frame 164R so as to be capable of swinging up and down by a first roller frame (roller frame 168) 168R. The second soil covering wheel 62L is supported by a second swing frame 164L in a vertically swingable manner by a second roller frame 168L (roller frame 168).

Since the first roller frame 168R and the second roller frame 168L are formed of the same structure, the first roller frame 168R and the second roller frame 168L will be collectively described.

As shown in fig. 29 and 30, the roller frame 168 is formed of a pipe member or the like, and has a first side lever portion 168A on the outer side of the machine body, a second side lever portion 168B on the inner side of the machine body, and a rear lever portion 168C on the rear side. The first side lever portion 168A has a first portion 168A extending in the front-rear direction of the body and a second portion 168b extending upward from the rear end of the first portion 168A. The front portion of the first portion 168a is rotatably coupled to a bracket member 169 protruding downward from the first side frame 65A about a horizontal axis. The second side bar portion 168B has a first portion 168c extending in the body front-rear direction and a second portion 168d extending upward from the rear end of the first portion 168c. The front portion of the first portion 168c is rotatably coupled to a bracket member 170 protruding downward from the second side frame 65B about a horizontal axis. The rear bar portion 168C connects rear portions of the first side bar portion 168A and the second side bar portion 168B to each other. Specifically, the upper ends of the second portion 168b and the second portion 168d are connected to each other. The soil covering wheel 62 is mounted to the rear of the first portion 168a and the rear of the first portion 168c via a strut member 171.

A first transplanting depth adjusting mechanism 172R (transplanting depth adjusting mechanism 172) is provided over the first swing frame 164R and the first roller frame 168R, and a second transplanting depth adjusting mechanism 172L (transplanting depth adjusting mechanism 172) is provided over the second swing frame 164L and the second roller frame 168L. Since the first transplanting depth adjusting mechanism 172R and the second transplanting depth adjusting mechanism 172L are formed of the same structure, the first transplanting depth adjusting mechanism 172R and the second transplanting depth adjusting mechanism 172L are described together.

The transplanting depth adjusting mechanism 172 is a mechanism that can variably fix the distance between the roller frame 168 and the swing frame 164 and adjust the transplanting depth of the seedling 7 by changing the distance.

As shown in fig. 29 and 30, the transplanting depth adjusting mechanism 172 includes a mechanism frame 173, an adjusting motor 174, a driving mechanism 175, and a link member 176. The mechanism frame 173 is erected on the rear frame portion 164D of the swing frame 164. The adjustment motor 174 is formed of an electric motor, and is connected to the control device 131. The adjustment motor 174 is mounted to the mechanism frame 173. In detail, the adjustment motor 174 is mounted on an upper portion of the mechanism frame 173. The drive mechanism 175 is driven by an adjustment motor 174. Specifically, the driving mechanism 175 includes a first gear 177 driven by the adjustment motor 174 and a second gear 178 engaged with the first gear 177 to rotate. The link member 176 couples the driving mechanism 175 to the roller frame 168 and moves up and down in conjunction with the driving of the driving mechanism 175.

The first gear 177 is formed by a pinion gear, and the second gear 178 is formed by a sector gear. A first gear (pinion) 177 is rotatably mounted to an upper portion of the mechanism frame 173. The second gear (sector gear) 178 is pivotally supported at a lower portion thereof by the mechanism frame 173, and has a gear portion 178a that meshes with the first gear (pinion gear) 177 at an upper portion thereof. The second gear 178 (sector gear) has a coupling portion 178b that couples the link member 176. The upper portion 176a of the link member 176 is coupled to the coupling portion 178b via a ball joint. The lower portion 176b of the link member 176 is coupled to a bracket member 179 fixed to the rear rod portion 168C via a ball joint.

In the transplanting depth adjusting mechanism 172, the first gear 177 is rotated by the adjusting motor 174, so that the second gear 178 swings around the pivot supporting portion 180. When the second gear 178 swings, the link 178b moves up and down, and the link member 176 moves up and down. The swing frame 164 swings up and down with respect to the roller frame 168 when the link member 176 moves up and down. Thereby, the interval of the roller frame 168 from the swing frame 164 varies, and the height of the transplanting body 12 with respect to the earth covering wheel 62 varies. When the height of the transplanting body 12 relative to the earth covering wheel 62 is changed, the height of the transplanting body 12 relative to the transplanting surface is changed, and therefore, the transplanting depth can be changed. Further, by stopping the driving of the adjustment motor 174, the interval between the roller frame 168 and the swing frame 164 is fixed, and the set transplanting depth can be maintained.

The swing frame 164 swings up and down due to the earth covering wheel 62 following the irregularities of the field 6. The swing frame 164 is set to be located at the center of the swing allowable range. When the transplanting depth is changed, the swing frame 164 swings up and down with respect to the transplanting frame 36, and thus the relative position with respect to the transplanting frame 36 in the up-down direction changes. Therefore, when the distance between the roller frame 168 and the swing frame 164 is changed, the control device 131 moves the main frame 37 (the transplanting frame 36) upward and downward in a direction to return the relative position of the swing frame 164 to the transplanting frame 36 according to the change in the distance between the roller frame 168 and the swing frame 164.

The transplanting depth adjusting mechanism 172 includes a detecting unit 182 that detects the amount of change in the distance between the roller frame 168 and the swing frame 164. The detection unit 182 is connected to the control device 131, and feeds back the amount of change in the interval between the roller frame 168 and the swing frame 164 to the control device 131. The detection unit 182 is constituted by a potentiometer, for example. The rotation detecting member of the detecting portion 182 is coupled to the pivot 181 that pivotally supports the second gear 178. The pivot 181 rotates integrally with the second gear 178. Therefore, the detecting portion 182 detects the rotation amount of the second gear 178.

Fig. 31 shows a soil cover pressure adjusting mechanism 183 that adjusts the soil cover pressure of the soil cover wheel 62 (the force with which the soil cover wheel 62 presses the ground). The soil cover pressure adjusting mechanism 183 includes a support plate 185, an operation lever 184, a spring arm 186, a first fixing bracket 187A, a second fixing bracket 187B, a link 188, and an adjusting spring 189.

The support plate 185 is fixed to the rear of the unit frame 38. The operation lever 184 is attached to the support plate 185 through a pivot 185A so as to be capable of swinging. The spring arm 186 is fastened to the lever 184 by a bolt and swings integrally with the lever 184. The first fixing bracket 187A is fixed to the swing frame 164. The second fixing bracket 187B is fixed to the unit frame 38. The link 188 includes a first link 188A pivotally supported by the first fixing bracket 187A and a second link 188B pivotally supported by the second fixing bracket 187B. The first link 188A is pivotally coupled to the second link 188B. The adjustment spring 189 is formed of a tension coil spring, one end of which is hooked to a locking hole 186a formed at an end of the spring hooking arm 186, and the other end of which is hooked to a locking hole 188A formed at the first link 188A.

In the earthing pressure adjusting mechanism 183, the earthing pressure can be adjusted by swinging the operation lever 184 around the pivot 185A to change the spring force of the adjusting spring 189. A plurality of locking portions 185a are provided on the upper portion of the support plate 185, and the locking piece 184a of the operation lever 184 is locked to the locking portions 185a, whereby the operation lever 184 can be fixed at a plurality of positions.

As shown in fig. 32, the transplanting depth adjusting mechanism 172 is operated by the operating portion 127. As shown in fig. 1 and 2, the operation unit 127 is provided in the vicinity of the driver's seat 3. Specifically, the operation portion 127 is provided in an inclined shape that moves upward as going forward in the upper portion of the steering column 27 in front of the driver's seat 3. The operation unit 127 is disposed below the steering wheel 25. The operation unit 127 is operable by an operator sitting on the driver seat 3. As shown in fig. 21 and 30, the operation unit 127 is connected to the control device 131.

As shown in fig. 32, the operation unit 127 transmits an operation signal for operating the transplanting depth adjusting mechanism 172 to the control device 131. The operation unit 127 further includes a transplanting depth adjustment unit 190 for operating the transplanting depth adjustment mechanism 172. The transplanting depth adjusting portion 190 is provided at the rear (lower) portion of the operating portion 127. The transplanting depth adjusting section 190 has an operation dial (rotational operation member) 191 and a logo 192 showing the rotational position of the operation dial 191. The logo 192 is provided on the upper surface of the operation dial 191. The transplanting depth adjusting mechanism 172 (the adjustment motor 174) is operated by a rotational operation of the operation dial 191 to the left or right. The transplanting depth adjusting section 190 has a depth display section 193 showing the operation direction of the operation dial 191. The depth display portion 193 has "deep" characters provided on the right side of the operation dial 191 and "shallow" characters provided on the left side of the operation dial 191.

In the transplanting depth adjusting section 190, when the operation dial 191 is turned to the right, the first operation signal S1 is sent from the operation section 127 to the control device 131. When the first operation signal S1 is acquired, the control device 131 causes the transplanting depth adjusting unit 190 to operate in a direction to deepen the transplanting depth. In a state where the index 192 is oriented forward (upward) as shown in fig. 32, a reference transplanting depth is set, and the transplanting depth increases from the reference depth as the operation dial 191 is rotated rightward from the state where the index 192 is oriented forward. When the operation dial 191 is rotated to the left, a second operation signal S2 is sent from the operation unit 127 to the control device 131. When the second operation signal S2 is acquired, the control device 131 causes the transplanting depth adjusting unit 190 to operate in a direction to make the transplanting depth shallow. The more the operation dial 191 is turned to the left from the state where the mark 192 is directed forward, the shallower the transplanting depth becomes from the reference depth. Further, the transplanting depth may be increased when the operation dial 191 is rotated to the right, and the transplanting depth may be decreased when it is rotated to the left.

The operation dial 191 can be operated stepwise, and the transplanting depth can be adjusted stepwise. The operation dial 191 may be continuously operated, and the transplanting depth may be continuously adjustable.

Since the operator 2 can operate the transplanting depth adjusting mechanism 172 with the transplanting depth adjusting portion 190 in a state of being seated on the driver's seat 3, the transplanting depth of the seedling 7 can be easily adjusted.

The operation portion 127 has an angle adjustment portion 194. The angle adjusting unit 194 performs an operation of lowering one side in the machine body width direction K2 of the transplanting work machine 4 around the rolling axis X1 or lowering the other side. The transplanting body 12 on one side is lowered by lowering the other side in the machine body width direction K2 of the transplanting machine 4, and the transplanting body 12 on the other side is lowered by lowering the other side in the machine body width direction K2 of the transplanting machine 4. Thereby, fine adjustment of the transplanting depth can be performed.

For example, even if the first transplanting surface 144R and the second transplanting surface 144L are the same height, there are cases where the transplanting depth of the seedling 7 transplanted by the first transplanting body 12R is slightly different from the transplanting depth of the seedling 7 transplanted by the second transplanting body 12L. At this time, for example, the transplanting body 12 on the side having a shallower transplanting depth is lowered, so that the transplanting depth is finely adjusted. The scroll control is performed in a state where the adjustment is performed.

As shown in fig. 32, the angle adjusting portion 194 is provided at the front (upper) portion of the operating portion 127, and includes a first switch 195 and a second switch 196 arranged in a lateral direction in the body width direction K2. The first switch 195 transmits a first lowering signal for lowering one side (first transplanting body arrangement side) of the transplanting work machine 4 around the rolling axis X1 to the control device 131. In other words, the first switch 195 transmits a first lowering signal S3 to the control device 131, the first lowering signal S3 being a signal for lowering the first transplanting body arrangement side of the transplanting work machine 4 around the rolling axis X1. When the first lowering signal S3 is acquired, the control device 131 lowers the right side of the transplanting work machine 4.

The second switch 196 transmits a second descent signal S4 to the control device 131, the second descent signal S4 being a signal for causing the other side (second transplanting body arrangement side) of the transplanting work machine 4 in the machine body width direction K2 to descend around the rolling axis X1. When the second descent signal S4 is acquired, the control device 131 descends the left side of the transplanting work machine 4.

For example, each time the first switch 195 or the second switch 196 is pressed, the transplanting work machine 4 is rotated by a predetermined angle about the rolling axis X1, and the transplanting depth can be finely adjusted in predetermined size units (several millimeters units or several centimeters units). The present invention is not limited to this.

In addition, the operation unit 127 includes a transplanting unit height adjustment unit 197. The transplanting portion height adjusting portion 197 is disposed in a middle portion (between the angle adjusting portion 194 and the transplanting depth adjusting portion 190) of the operating portion 127, and includes a lifting switch 198 and a lowering switch 199. The down switch 199 is disposed right and rear (lower) of the up switch 198.

The transplanting portion height adjusting portion 197 corrects the difference between the sinking amounts of the sensing roller 126 and the earth covering wheel 62. Further, the present invention is also used for correction of initial value deviation of mechanical and electric power. The purpose is to prevent the swing frame 164 from being greatly deviated in the upper or lower direction of the swing range.

This will be described in detail below. The numerical values described in the following description are exemplary and not limiting.

The transplanting body 12 and the covering wheel 62 are mounted on the swing frame 164 that swings up and down with the front portion (transplanting drive shaft 165) as a fulcrum, and when the (grounded) covering wheel 62 is lifted by, for example, 1cm with respect to the swing frame 164, the swing frame 164 is lowered, the transplanting body 12 goes deep about 1cm into the ground, and the transplanting depth becomes about 1cm.

The swing frame 164 has a swing range of about 4cm at the soil covering wheel 62 portion, and if the soil covering wheel 62 is located at the center of the swing range, the transplanting depth can be kept constant even if the irregularities of the ridge are ±2 cm.

However, if the height of the transplanting frame 36 (the height of the pivot point (transplanting drive shaft 165) of the swing frame 164) is the same, the swing frame 164 is displaced to the lower side of the swing range when the earth covering wheel 62 is lifted by 1cm, and the ridge uneven adaptation range becomes-1 cm to +3cm. Therefore, in the case of making the transplanting depth deeper by 1cm, the earth covering wheel 62 is lifted by 1cm, and the transplanting frame 36 is lowered by 1cm, with the swing frame 164 being located at the center of the swing range.

In addition, the transplanting depth adjustment range is-2 cm to +5cm, 0 is set as the same surface of the upper surface of the root pot (the bed soil of the seedling 7) and the upper surface of the ridge. 0 are not necessarily the same surfaces, and the adjustment allowance on the deep planting side is often used.

In addition, the ground height of sensing roller 126 is not the same as the ground height of the earth covering wheel 62. That is, the pressing load of the earthing roller 62 is higher than that of the sensing roller 126, and therefore, the earthing roller 62 sinks, and the earthing roller 62 becomes lower than the sensing roller 126. In terms of design, it was observed that the side of the earth-covering wheel 62 became lower by 1cm, but the difference in the sinking amount was changed depending on the pressing load adjustment of the earth-covering wheel 62, the hardness of the ridge upper surface, the presence or absence of the multiple films, and the like. In order to correct the difference in the sinking amount, a transplanting portion height adjusting portion 197 is provided.

When the lowering switch 199 is pressed, the transplanting portion height adjusting portion 197 transmits a correction value (first correction value S5) to the control device 131, and the control device 131 lowers the transplanting frame 36 based on the correction value. Specifically, in general, when the difference between the ground surfaces of the sensing roller 126 and the earth-covering wheel 62 is 1cm, the ridge is soft, the sinking of the earth-covering wheel 62 is large (the swing frame 164 is shifted downward in the swing range), and when the difference between the ground surfaces is large, for example, when the difference between the ground surfaces is 1.5cm, the lowering switch 199 is pressed ("lowered") to lower the transplanting frame 36 by 0.5cm (the sensing roller is lifted by 0.5 cm), and the swing frame 164 is corrected so as to be the center of the swing range.

When the lifting switch 198 is pressed, the transplanting portion height adjusting unit 197 transmits a correction value (second correction value S6) to the control device 131, and the control device 131 lifts the transplanting frame 36 based on the correction value. Specifically, in the case where the ridge is hard and there are multiple films, the difference in the height between the sensing roller 126 and the ground contact surface of the earthing roller 62 is small, and the swing frame 164 is shifted to the upper side of the swing range, and therefore, the lifting switch 198 is pressed ("raised") to lift the transplanting frame 36.

For example, each time the up switch 198 and the down switch 199 are pressed, the value may be changed in predetermined size units. If the target of the soil covering wheel 62 is 2cm during the transplanting depth adjustment, 3cm higher than the soil covering wheel 62 by 1cm is set as the target of the sensing roller 126. That is, when the detection value of the sensing roller 126 is +1cm (4 cm), the transplanting frame 36 is lifted, and when it is-1 cm (2 cm), the transplanting frame 36 is lowered. When the elevation switch 198 is pressed to "raise" the height of the transplanting frame by 0.5cm, 2.5cm, which is 0.5cm higher (1 to 0.5=) than the earthing roller 62 by 0.5cm, is controlled as a target (the target value of the sensing roller height is low, but conversely, the transplanting frame height is high). That is, when the detection value of the sensing roller 126 is +1cm (3.5 cm), the transplanting frame 36 is lifted, and when it is-1 cm (1.5 cm), the transplanting frame 36 is lowered. When the lowering switch 198 is pressed to "lower" the height of the transplanting frame by 0.5cm, 3.5cm, which is 1.5cm (1+0.5=) higher than the soil covering wheel 62 by the sensing roller 126, is controlled as a target. That is, when the detection value of the sensing roller 126 is +1cm (4.5 cm), the transplanting frame 36 is lifted, and when it is-1 cm (2.5 cm), the transplanting frame 36 is lowered.

Here, the first transplanting lifting mechanism 167R and the second transplanting lifting mechanism 167L will be described with reference to fig. 33 and 34. Since the first transplanting elevating mechanism 167R and the second transplanting elevating mechanism 167L are formed of the same structure and are bilaterally symmetrical, the first transplanting elevating mechanism 167R and the second transplanting elevating mechanism 167L are described together.

As shown in fig. 33 and 34, the transplanting lifting mechanism 167 includes a first rotary box 201, a second rotary box 202, and a support plate 121. The first rotary case 201 is rotatably supported by the first side frame 164A via the first support shaft 205. Specifically, a bearing member 204 is provided on the bracket member 169 provided on the first side frame portion 164A, the bearing member 204 rotatably supports the first support shaft 205, and the first rotary case 201 is supported on the first support shaft 205. The sprocket 203 is integrally rotatably mounted on a support shaft 205. As shown in fig. 28, power is transmitted from a sprocket 207 rotatably integrally attached to the transplanting drive shaft 165 to the sprocket 203.

As shown in fig. 33 and 34, the second rotary case 202 is rotatably supported on the free end side of the first rotary case 201 about the second support shaft 206. The support plate 121 is supported by the second rotary case 202. Specifically, a bearing member 209 is provided on the upper portion of the support plate 121 via a pivot support shaft 208, a bearing member 211 is fixed to the lower end side of a plate member 210 protruding downward from the bearing member 209, and a third support shaft 215 provided in the second rotary case 202 is supported by the bearing member 211. The transplanting body 12 is supported by the support plate 121. Specifically, the transplanting body 12 includes a front structure 12A and a rear structure 12B, the front upper side of the front structure 12A is rotatably supported about a pivot 212A provided to the support plate 121, and the rear upper side of the rear structure 12B is rotatably supported about a pivot 212B provided to the support plate 121.

The transplanting lifting mechanism 167 is driven by the power transmitted to the first support shaft 205 to lift the transplanting body 12. Specifically, as shown in fig. 34, a power transmission device is provided in the first rotary case 201 and the second rotary case 202 as follows: when the first rotating case 201 rotates in the arrow Y1 direction about the first support shaft 204, the second rotating case 202 rotates in the opposite direction (arrow Y2 direction) to the first rotating case 201 in association with the rotation of the first rotating case 201. By rotating the first rotary box 201 and the second rotary box 202, the support plate 121 moves up and down in parallel while moving back and forth, and the transplanting body 12 moves up and down (moves up and down) so as to trace an elliptical trajectory.

As shown in fig. 34, the transplanting body 12 is provided laterally to the transplanting elevating mechanism 167 (second rotary box 202). Specifically, the transplanting body 12 is provided at a position overlapping the second rotary box 202 in a side view. As a result, the transplanting device (transplanting body 12 and transplanting lifting mechanism 167) can be compactly constructed, and as shown in fig. 33, the transplanting body 12 can be brought close to the seedling stage 9 while preventing interference with the seedling stage 9.

When the transplanting body 12 is disposed to overlap on the side of the transplanting elevating mechanism 167, soil may be applied from the root pot of the seedling 7 to the transplanting elevating mechanism 167 when the seedling 7 is put into the transplanting body 12. Therefore, as shown in fig. 35 and 36, a cover member 213 is provided on the upper portion of the support plate 121. The cover member 213 includes a first cover portion 213A and a second cover portion 213B, the first cover portion 213A covering the bearing member 209, the bearing member 211, the bearing member 216A supporting the pivot shaft 212A, and the bearing member 216B supporting the pivot shaft 212B, and the second cover portion 213B covering the space between the support plate 121 and the transplanting body 12 from above.

As shown in fig. 35 and 36, the water filling pipe 120 is provided on the side surface 214a of the first cover 213A on the transplanting body 12 side. Specifically, the pipe support 214 is attached to the side surface, and the irrigation pipe 120 is fixed to the pipe support 214. Therefore, the irrigation pipe 120 is provided to the support plate 121 via the cover member 213 and the pipe support 214.

As shown in fig. 37, the first seedling stage 9R and the second seedling stage 9L are arranged in the body width direction K2 and mounted on the main frame 37. The first seedling stage 9R and the second seedling stage 9L are supported by rail members (first rail 56 and second rail 58) of the main frame 37 so as to be movable in the machine body width direction K2.

As shown in fig. 38, the reverse guide 13 is provided at the center, right side, and left side in the body width direction K2 of the lower part of the seedling stage 9, and is attached to a support rod 217 provided at the lower part of the seedling stage 9. The empty tray guide 14 includes a first lever portion 14A disposed outside the body of the seedling stage 9, a second lever portion 14B disposed inside the body of the seedling stage 9, and a connecting lever portion 14C connecting upper portions of the first lever portion 14A and the second lever portion 14B to each other. The seedling stage 9 has a first housing portion 218 provided on the right side and a second housing portion 219 provided on the left side at the lower portion thereof.

As shown in fig. 39 and 40, the first seedling stage 9R has a first holder member 221R. The first holder member 221R has an upper holder 222R and a lower holder 223R provided on the lower side of the upper holder 222R. The upper holder 222R includes a first leg 224R attached to the first housing portion 218, a second leg 225R attached to the second housing portion 219, and a connecting leg 226R connecting the first leg 224R and the second leg 225R. A first strut plate 227R is fixed to the inner side (left side) of the body of the connecting strut 226R. A coupling bracket 228 (see fig. 46) is fixed to the coupling stay 226R. The coupling bracket 228 is disposed outside the body of the first strut plate 227R and is also fixed to the first strut plate 227R. The working shaft 229 extending in the machine body width direction K2 is rotatably provided at a lower portion of the first seedling stage 9R throughout the machine body width direction K2. The outer side of the working shaft 229 protrudes farther outward than the first housing portion 218. The two followers 230 arranged at a distance in the body width direction K2 are attached to the working shaft 229.

The lower holder 223R includes a first leg 231R attached to the first housing portion 218, a second leg 232R attached to the second housing portion 219, and a connecting leg 233R connecting the first leg 231R and the second leg 232R.

The plurality of first rollers 234R are rotatably attached to the connecting stay 226R and the connecting stay 233R. The first roller 234R attached to the connecting stay 226R is supported on the first rail 56 so as to be movable in the body width direction K2. The first roller 234R attached to the connecting stay 233R is supported on the second rail 58 so as to be movable in the body width direction K2.

As shown in fig. 39 and 40, the second seedling stage 9L has a second holder member 221L. The second holder frame member 221L has an upper holder 222L and a lower holder 223L provided below the upper holder 222L. The upper holder 222L includes a first leg 224L attached to the first housing portion 218, a second leg 225L attached to the second housing portion 219, and a connecting leg 226L connecting the first leg 224L and the second leg 225L. A second strut plate 227L is fixed to the inner side (right side) of the body of the connecting strut 226L. The lower holder 223L includes a first leg 231L attached to the first housing portion 218, a second leg 232L attached to the second housing portion 219, and a connecting leg 233L connecting the first leg 231L and the second leg 232L.

The plurality of second rollers 234L are rotatably attached to the connecting stay 226L and the connecting stay 233L. The plurality of second rollers 234L attached to the connecting stay 226L are supported on the first rail 56 so as to be movable in the machine body width direction K2. The plurality of second rollers 234L attached to the connecting strut 233L are supported on the second rail 58 so as to be movable in the body width direction K2.

As shown in fig. 39, a connecting member 235 extending in the machine body width direction K2 is provided from the left part of the first seedling stage 9R to the second seedling stage 9L. The first strut plate 227R is bolted to the right portion of the connecting member 235. The second stay plate 227L is bolted to the connecting member 235 so as to be adjustable in position in the body width direction K2.

Since the first seedling stage 9R and the second seedling stage 9L are connected via the connecting member 235, the first seedling stage 9R and the second seedling stage 9L integrally move along the first rail 56 and the second rail 58 in the machine body width direction K2.

Fig. 39 shows the states of the first seedling stage 9R and the second seedling stage 9L in the case where the row interval W1 is the narrowest interval. By changing the mounting position of the second stay plate 227L from this state, the interval between the first seedling stage 9R and the second seedling stage 9L in the machine body width direction K2 can be adjusted in accordance with the adjustment of the row interval W1.

Fig. 41 shows an infeed mechanism 236 for intermittently feeding the first seedling stage 9R and the second seedling stage 9L by one pitch of the can portion 8a in the machine body width direction K2. The infeed mechanism 236 includes an infeed shaft 237 disposed below the first seedling stage 9R. The infeed shaft 237 is disposed so as to extend in the body width direction K2, and is supported by a support 238 fixed to the first unit frame 38R. The support 238 is provided to the frame main body 64 of the first unit frame 38R. The support body 238 includes a first bracket 238A attached to the frame body 64, a second bracket 238B fixed to the first bracket 238A, a third bracket 238C fixed to the right end side of the second bracket 238B, a gear case 238D fixed to the second bracket 238B and the third bracket 238C, and a fourth bracket 238E provided on the opposite side of the second bracket 238B from the gear case 238D. The infeed shaft 237 is disposed throughout the gear box 238D and the fourth carriage 238E. A first transmission sprocket 239 rotatable integrally with the drive spindle 71 and movable in the axial direction is provided at a lower portion of the third bracket 238C. The first drive sprocket 239 is capable of transmitting power to the second drive sprocket 240 provided to the second bracket 238B. The power transmitted to the second drive sprocket 240 is transmitted from an input shaft provided integrally rotatably with the second drive sprocket 240 to the infeed shaft 237 via a transmission mechanism in the gear box 238D.

A nano-wire screw (napd ね backing in japanese) having a spiral groove (so-called traverse groove) 237a formed on the outer peripheral surface thereof so as to reciprocate in the axial direction is used for the infeed shaft 237. A slider 241 is fitted to the infeed shaft 237, and the slider 241 includes an engagement portion 241a that engages with the traverse groove 237 a. The slider 241 is provided with a coupling shaft 242, and the coupling shaft 242 is coupled to the coupling bracket 228 of the first holder member 221R provided on the first seedling stage 9R. A longitudinal feed cam (operating body) 243 is fixed to one end side and the other end side of the infeed shaft 237.

When the infeed shaft 237 rotates, the engaging portion 241a is guided along the traverse groove 237a, and the slider 241 is reciprocated in the body width direction K2. Thereby, the first seedling stage 9R can be reciprocated in the machine body width direction K2. Further, since the second seedling stage 9L is connected to the first seedling stage 9R via the connecting member 235, the first seedling stage 9R and the second seedling stage 9L can reciprocate integrally in the body width direction K2.

In the case of adjusting the row spacing W1, since the first seedling stage 9R and the first unit frame 38R (the first transplanting unit 63R) are connected via the infeed mechanism 236 and the first seedling stage 9R and the second seedling stage 9L are connected by the connecting member 235, the first seedling stage 9R, the second seedling stage 9L, and the first transplanting unit 63R are integrally adjusted in position in the machine body width direction K2. The second transplanting unit 63L performs position adjustment separately from the first transplanting unit 63R. After the first transplanting unit 63R and the second transplanting unit 63L are adjusted in the body width direction K2, the second seedling stage 9L is adjusted in position in accordance with the adjusted row interval W1.

Fig. 42 shows the vertical feeding mechanism 244 and the seedling taking-out device 11 that vertically feed the seedling tray 8 downward in the inclined direction by one pitch of the tank portion 8 a. The vertical feeding mechanism 244 includes a tray conveying mechanism 245, and the tray conveying mechanism 245 is provided in each of the first housing portion 218 and the second housing portion 219 of each seedling stage 9. The tray conveying mechanism 245 has a drive sprocket 246, a driven sprocket 247, and an endless conveying chain 248 wound around the drive sprocket 246 and the driven sprocket 247. In the conveying chain 248, conveying pins 249 interposed between the tank portions 8a are provided at intervals in the longitudinal direction. By rotating the drive sprocket 246 in the arrow Y3 direction in fig. 42, the seedling tray 8 is longitudinally fed downward (in the arrow Y4 direction in fig. 42) along the mounting plate 10 via the conveying chain 248 and the conveying pins 249.

As shown in fig. 42, the seedling removing device 11 is disposed at the rear of the lower part of the seedling stage 9, and has a seedling claw 250. The seedling-taking claw 250 is pushed into the pot 8a from the rear and is inserted into the root pot of the seedling 7, and retreats from the pot 8a in the inserted state, whereby the seedling 7 is taken out from the pot 8 a. After the seedling 7 is taken out, the seedling taking claw 250 changes its posture so that the soil (root pot) of the seedling 7 faces the transplanting body 12 below, and thereafter, releases the seedling 7 and inputs it into the transplanting body 12.

As shown in fig. 43 to 45, the vertical feed mechanism 244 includes a vertical feed driving mechanism 251 that drives the tray conveyance mechanism 245. The longitudinal feed drive mechanism 251 has a longitudinal feed spindle 252. The longitudinal feeding main shaft 252 is provided throughout the first seedling stage 9R and the second seedling stage 9L. A longitudinal feeding power for feeding the seedling tray 8 in a longitudinal feeding direction Y4 (referred to as a longitudinal feeding direction) is transmitted to the longitudinal feeding main shaft 252. The longitudinal feed drive mechanism 251 includes a first longitudinal feed shaft 253R provided on the first seedling stage 9R and conveying the seedling tray 8 placed on the first seedling stage 9R in the longitudinal feed direction (longitudinal direction) Y4, and a second longitudinal feed shaft 253L provided on the second seedling stage 9L and conveying the seedling tray 8 placed on the second seedling stage 9L in the longitudinal feed direction (longitudinal direction) Y4. The first longitudinal feed shaft 253R and the second longitudinal feed shaft 253L are formed in tubular shapes and are fitted to the outside of the longitudinal feed main shaft 252 so as to be rotatable about the axial center.

As shown in fig. 44, the vertical feed spindle 252 includes a rotating body 255 to which vertical feed power is transmitted, and a shaft 256 fixed to the rotating body 255 and provided throughout the first seedling stage 9R and the second seedling stage 9L. The shaft body 256 (longitudinal feed main shaft 252) has an extension shaft portion 256a protruding from the second seedling stage 9L to the opposite side of the first seedling stage 9R. The shaft body 256 has a first shaft 256A on the first seedling stage 9R side and a second shaft 256B on the second seedling stage 9L side. An extension shaft portion 256a is provided in the second shaft 256B. The first shaft 256A and the second shaft 256B are coupled by a coupling body 257 between the first seedling stage 9R and the second seedling stage 9L. The coupling body 257 has a first coupling portion 257A provided integrally rotatably to the first shaft 256A and a second coupling portion 257B provided integrally rotatably to the second shaft 256B. The first and second coupling parts 257A and 257B are coupled by flange coupling or the like.

As shown in fig. 44, the first longitudinal feed operating shaft 253R is fitted to the first shaft 256A (shaft body 256) so as to be rotatable relative to each other. The first longitudinal feed working shaft 253R has: a first rotary cylinder 259R, the first rotary cylinder 259R having a first input 258R adjacent to the rotary body 255; a second rotary cylinder 260R, the second rotary cylinder 260R being disposed on the opposite side of the first rotary cylinder 259R; and a coupling cylinder 261R, wherein the coupling cylinder 261R couples the first rotary cylinder 259R and the second rotary cylinder 260R. The drive sprocket 246 in the first housing portion 218 of the first seedling stage 9R is integrally rotatably mounted to the first rotary cylinder 259R. The drive sprocket 246 in the second housing portion 219 of the first seedling stage 9R is integrally rotatably mounted to the second rotary tube 260R. Therefore, the drive sprocket 246 of the first seedling stage 9R rotates integrally with the first longitudinal feed working shaft 253R.

As shown in fig. 44, a first vertical feed clutch 262R that can intermittently transmit power from the vertical feed main shaft 252 to the first vertical feed operating shaft 253R is disposed outside (right) the body of the first seedling stage 9R. The first longitudinal feed clutch 262R is provided on the opposite side of the first seedling stage 9R from the second seedling stage 9L. Thereby, the first seedling stage 9R can be brought close to the second seedling stage 9L. The first longitudinal feed clutch 262R has: a drive engagement portion 263, the drive engagement portion 263 being provided to the rotating body 255; a clutch main body 264, wherein the clutch main body 264 is movably fitted to the first input portion 258R in the axial direction and is integrally rotatable; and a driven engagement portion 265 provided on the clutch main body 264, and engaged with and disengaged from the driving engagement portion 263 by moving the clutch main body 264 in the axial direction. By moving the clutch main body 264 in a direction approaching the rotating body 255 and engaging the driven engagement portion 265 with the driving engagement portion 263, the first vertical feed clutch 262R is brought into a connected state, and power is transmitted from the drive main shaft 71 to the first vertical feed operating shaft 253R, whereby the seedling tray 8 of the first seedling stage 9R can be vertically fed. Further, by moving the clutch main body 264 in a direction away from the rotating body 255 and moving the driven engagement portion 265 away from the driving engagement portion 263, power is not transmitted from the driving main shaft 71 to the first vertical feed operation shaft 253R, and the seedling tray 8 of the first seedling stage 9R is in a state where vertical feed is not possible (the first vertical feed clutch 262R is in a cut-off state).

A first clutch operation mechanism 266R for operating the first vertical feed clutch 262R is provided on the right side of the first seedling stage 9R. The first clutch operation mechanism 266R includes an operation lever 267, a clutch fork 268, and a return spring 269. The operation lever 267 is pivotally supported by the first seedling stage 9R so as to be capable of swinging up and down. The clutch fork 268 engages the clutch body 264 and is coupled to the lever 267. The return spring 269 biases the operation lever 267 upward. In a state where the operation lever 267 is pulled up, the first longitudinal feed clutch 262R is in a connected state. When the operation lever 267 is pulled down against the spring force of the return spring 269, the clutch main body 264 moves in a direction in which the driven engagement portion 265 moves away from the driving engagement portion 263, and the first longitudinal feed clutch 262R is in the disengaged state. Further, the operation lever 267 can be held in a pulled-down state.

As shown in fig. 45, the second longitudinal feed operating shaft 253L is fitted in the second shaft 256B (shaft body 256) so as to be rotatable relative to each other. The second vertical feed shaft 253L includes a first rotary cylinder 259L on the first seedling stage 9R side (right side), a second rotary cylinder 260L disposed on the opposite side of the first rotary cylinder 259L, and a connecting cylinder 261L connecting the first rotary cylinder 259L and the second rotary cylinder 260L. The second rotary cylinder 260L has a second input portion 258L fitted in the extension shaft portion 256a so as to be rotatable relative to each other. The drive sprocket 246 in the first housing portion 218 of the second seedling stage 9L is integrally rotatably mounted to the first rotary cylinder 259L. The drive sprocket 246 in the second housing portion 219 of the second seedling stage 9L is integrally rotatably mounted to the second rotary cylinder 260L. Therefore, the drive sprocket 246 of the second seedling stage 9L rotates integrally with the second longitudinal feed working shaft 253L.

As shown in fig. 45, a second vertical feed clutch 262L capable of intermittently transmitting power from the vertical feed main shaft 252 to the second vertical feed operating shaft 253L is disposed outside (left) the body of the second seedling stage 9L. The second vertical feed Clutch 262L includes a rotating portion 271 and a Clutch Shifter (Clutch shift) 272 that is engaged with and disengaged from the rotating portion 271. The rotation portion 271 is fitted to the extension shaft portion 256a so as to be movable in the axial direction and integrally rotatable. The rotating portion 271 is attached to the second seedling stage 9L, and moves integrally with the second seedling stage 9L. The clutch shifter 272 is fitted to the second input portion 258L so as to be movable in the axial direction and integrally rotatable. The clutch shifter 272 is moved in the axial direction to engage with and disengage from the rotating portion 271.

The rotation portion 271 has a driving engagement portion 271a, and the clutch shifter 272 has a driven engagement portion 272a engaged with the driving engagement portion 271 a. By engaging the driven engagement portion 272a of the clutch shifter 272 with the driving engagement portion 271a, the second vertical feed clutch 262L is brought into a connected state, and power is transmitted from the drive main shaft 71 to the second vertical feed operating shaft 253L, so that the seedling tray 8 of the second seedling stage 9L can be vertically fed. Further, by moving the driven engagement portion 272a of the clutch shifter 272 away from the driving engagement portion 271a, power is not transmitted from the driving main shaft 71 to the second vertical feed operation shaft 253L, and the seedling tray 8 of the second seedling stage 9L is not vertically fed (the second vertical feed clutch 262L is in the off state).

A second clutch operation mechanism 266L for operating the second vertical feed clutch 262L is provided on the left side of the second seedling stage 9L. The second clutch operating mechanism 266L includes an operating lever 267, a clutch fork 268, and a return spring 269. The operation lever 267 is pivotally supported by the second seedling stage 9L so as to be capable of swinging up and down. The clutch fork 268 engages the clutch shifter 272 and is coupled to the lever 267. The return spring 269 biases the operation lever 267 upward. In a state where the operation lever 267 is pulled up, the second longitudinal feed clutch 262L is in a connected state. When the operation lever 267 is pulled down against the spring force of the return spring 269, the clutch shifter 272 moves in a direction in which the driven engagement portion 272a is away from the driving engagement portion 271a, and the second longitudinal feed clutch 262L is in the disengaged state. Further, the operation lever 267 can be held in a pulled-down state.

As described above, when the first vertical feed clutch 262R and the second vertical feed clutch 262L are connected, the seedling trays 8 mounted on the first seedling stage 9R and the second seedling stage 9L can be vertically fed. Thus, two-line transplanting is enabled. When the first vertical feed clutch 262R is cut, only the seedling tray 8 placed on the second seedling stage 9L can be vertically fed. When the second vertical feed clutch 262L is cut, only the seedling tray 8 placed on the first seedling stage 9R can be vertically fed. Thereby, single-row transplanting is enabled.

As shown in fig. 44 and 46, the longitudinal feed mechanism 244 includes a longitudinal feed mechanism 273 for transmitting power from the infeed mechanism 236 to the longitudinal feed drive mechanism 251. The longitudinal feed mechanism 273 has: a rotary cylinder 275, the rotary cylinder 275 being rotatably supported by a shaft support 274 provided on the right part of the shaft 256; and a swing lever 277, the swing lever 277 being coupled with the rotary cylinder 275 via a one-way clutch 276. The swing lever 277 rotates in the direction of transmitting the longitudinal feed force (in the direction of arrow Y5 in fig. 46) in parallel with the rotary cylinder 275 via the one-way clutch 276. When the swing lever 277 rotates in the direction opposite to the direction of arrow Y5, the one-way clutch 276 idles, and does not rotate in the same direction as the rotary cylinder 275.

As shown in fig. 44 and 46, the longitudinal feed mechanism 273 has a longitudinal feed gear 278 fixed to the rotary cylinder 275 and a ratchet arm 279. As shown in fig. 44, the longitudinal feed gear 278 is bolted to the rotary body 255 and integrally rotates with the rotary body 255. The ratchet arm 279 is swingably pivotally supported on the first seedling stage 9R, and has an engagement portion 279a that engages with the engagement teeth 278a of the vertical feed gear 278. The swing lever 277 has an engagement pin 277a engaged with the ratchet arm 279. When the swing lever 277 rotates in the direction of arrow Y5, the rotary cylinder 275 rotates integrally with the longitudinal feed gear 278 to rotate the rotary body 255. Thereby, the seedling tray 8 is longitudinally fed by an amount of one pitch in the longitudinal direction of the tank portion 8 a. At this time, the engagement pin 277a pushes up the ratchet arm 279. Then, the engagement portion 279a is disengaged from the engagement tooth 278a of the longitudinal feed gear 278. After the seedling tray 8 is longitudinally fed by an amount of one pitch in the longitudinal direction of the tank portion 8a, the swing lever 277 is rotated in a direction opposite to the arrow Y5 direction to be reset. When the swing lever 277 is reset, the engagement pin 277a moves in a direction to lower the ratchet arm 279 with respect to the ratchet arm 279, and the engagement portion 279a engages with the following engagement tooth 278a of the vertical feed gear 278.

Further, the longitudinal feed gear 278 and the ratchet arm 279 are provided in two types so that the longitudinal feed amount can be set corresponding to two types of seedling trays 8 having different numbers of the pot portions 8a and different pitches of the pot portions 8 a. Further, a selecting member is provided for selecting either one of the two ratchet arms 279 and engaging with the longitudinal feed gear 278.

As shown in fig. 46, the swing lever 277 is linked to the working shaft 229 via a link mechanism 280. When the first seedling stage 9R is fed in the lateral direction by the rotation of the lateral feed shaft 237 and reaches the end of the movement region in the lateral feed direction, the longitudinal feed cam 243 integrally rotated with the lateral feed shaft 237 abuts against the follower 230, and the working shaft 229 rotates. When the working shaft 229 rotates, the linkage mechanism 280 pulls the swing lever 277, causing the swing lever 277 to rotate in the direction of arrow Y5. When the vertical feed cam 243 moves in the body width direction K2 and is disengaged from the follower 230, the swing lever 277 is rotated in a direction opposite to the arrow Y5 by a return spring, not shown, and is returned.

As shown in fig. 38, a seedling-end sensor 281 for detecting the timing of replenishment of the seedling tray 8 is provided at the lower part of the seedling stage 9. In a state where the seedling end sensor 281 is operated, two seedling trays 8 can be supplied to the mounting plate 10.

The lowest seedling tray 8 (seedling tray 8 from which seedlings 7 are taken out) applies a load such as soil and moisture contained in the soil in the tank portion 8a of the seedling tray 8 on the upper side thereof. Further, the seedling tray 8 at the lowest position may be bent due to the load of the seedling tray 8 above the seedling tray 8 at the lowest position. Therefore, in the present embodiment, the seedling placement table 9 is provided with the tray pressing mechanism 282 for suppressing the movement of the seedling tray 8 in the longitudinal feeding direction Y4. By suppressing the movement of the seedling tray 8 in the longitudinal feeding direction Y4 by the tray pressing mechanism 282, the load applied to the lowest seedling tray 8 can be suppressed, and bending of the lowest seedling tray 8 can be prevented. Therefore, the tray pressing mechanism 282 suppresses the movement of the seedling tray 8 located on the upper side of the seedling tray 8 located at the lowermost position in the longitudinal feeding direction Y4. The tray pressing mechanism 282 is disposed on the rear side in the longitudinal feeding direction Y4 with respect to the longitudinal feeding mechanism 244. This allows the tray pressing mechanism 282 to be assembled well without overlapping the vertical feed mechanism 244.

In the present embodiment, a plurality of tray pressing mechanisms 282 are provided. The plurality of tray pressing mechanisms 282 includes a first tray pressing mechanism 282A that suppresses movement of the seedling tray 8 above the lowermost seedling tray 8 in the longitudinal feeding direction, and a second tray pressing mechanism 282B that suppresses movement of the uppermost seedling tray 8 in the longitudinal feeding direction Y4. Each tray pressing mechanism 282 includes a first pressing mechanism 283 and a second pressing mechanism 284, and the first pressing mechanism 283 is disposed on one side surface side of the seedling tray 8, and the second pressing mechanism 284 is disposed on the other side surface side of the seedling tray 8.

The first tray pressing mechanism 282A and the second tray pressing mechanism 282B are formed by the same structure, and therefore will be described together. Since the first pressing mechanism 283 and the second pressing mechanism 284 are formed by the same structure except for a part of the structure, the first pressing mechanism 283 and the second pressing mechanism 284 will be described together with respect to a common part.

Fig. 47 shows a top view of the second pressing mechanism 284. Fig. 48 shows a side view of the second pressing mechanism 284. The front (front) of the longitudinal feed direction Y4 refers to the arrow Y4 direction of fig. 47, and the rear (rear) of the longitudinal feed direction Y4 refers to the direction opposite to the arrow Y4 direction.

As shown in fig. 47 and 48, the second pressing mechanism 284 (first pressing mechanism 283) includes a base member 286, a pivot 287, a rotary cylinder 288, a biasing member 289, a pressing member 290, and a restricting lever 291.

The base member 286 is attached to the seedling stage 9 (the mounting plate 10). Specifically, the base member 286 is formed of a plate material, and has a mounting wall 286a and a rising wall 286b, the mounting wall 286a is mounted on the end side of the mounting plate 10 in the body width direction K2 by bolts or the like, and the rising wall 286b extends from the end (Miao Tuopan side end) of the mounting wall 286a in the normal direction of the mounting plate 10. The pivot shaft 287 is disposed at the rear (upper) of the base member 286 in the longitudinal feeding direction Y4, and is fixed to the mounting wall 286a so as to protrude in the normal direction of the mounting wall 286a. The rotary cylinder 288 is rotatably fitted (supported) around the axial center outside the pivot 287.

The urging member 289 is formed of an extension coil spring. One end of the biasing member 289 is locked to a spring hooking member 292 fixed to the rotary cylinder 288. The spring hooking member 292 protrudes from the rotary drum 288 to the opposite side to the seedling tray 8. In other words, the spring hooking member 292 protrudes from the rotary drum 288 in a direction away from the center of the seedling placement table 9 in the body width direction K2. The spring hooking member 292 is provided with a plurality of spring hooking holes 293 for hooking one end of the biasing member 289, and the locking position of one end of the biasing member 289 can be changed. This allows the force to be changed. The other end side of the spring hooking member 292 is locked to a support plate 294 provided upright on the base member 286. The support plate 294 is provided at a front portion (lower portion) of the base member 286 in the longitudinal feeding direction Y4.

As shown in fig. 49 and 50, the spring hooking member 292A of the first pressing mechanism 283 is fixed to the rotary cylinder 288 on the base side of the pivot 287. As shown in fig. 49 and 51, the spring hooking member 292B of the second pressing mechanism 284 is fixed to the rotary cylinder 288 at the front end side of the pivot 287. Accordingly, the spring hooking member 292A is disposed on the lower side of the spring hooking member 292B. Thereby, the first seedling stage 9R can be brought close to the second seedling stage 9L.

As shown in fig. 48 to 51, the support plate 294 has two spring hook holes (engagement portions) 295A, 295B in the upper and lower sides. In the case of hooking one end side of the biasing member 289 to the spring hooking member 292A of the first pressing mechanism 283, the other end side of the biasing member 289 is hooked to the lower spring hooking hole 295A. In addition, in the case of hooking one end side of the biasing member 289 to the spring hooking member 292B of the second pressing mechanism 284, the other end side of the biasing member 289 is hooked to the upper spring hooking hole 295B.

As shown in fig. 47 and 48, the pressing member 290 includes a base-end-side fixing portion 290a, a middle portion abutment portion 290b, a connecting portion 290c, and a distal-end-side portion 290d. The fixed portion 290a is fixed to the rotary barrel 288. The abutting portion 290b is formed to be distant from the fixed portion 290a toward the front side in the longitudinal feeding direction Y4. The abutment portion 290b is formed linearly and abuts against the seedling tray 8. Specifically, the contact portion 290b contacts the side surfaces of the plurality of tank portions 8 a. That is, the pressing member 290 abuts against the side surface of the seedling tray 8. The pressing member 290 may be brought into contact with the front surface (upper surface wall 8 b) of the seedling tray 8, but in this way, the leaves of the seedlings 7 may be sandwiched by the pressing member 290. By bringing the pressing member 290 into contact with the side surface of the seedling tray 8, the leaves of the seedlings 7 can be prevented from being pinched by the pressing member 290.

As shown in fig. 47, the connecting portion 290c connects the fixed portion 290a and the abutting portion 290b. The connecting portion 290c is formed in an inclined shape that shifts in a direction approaching the seedling tray 8 (a direction toward the center of the body width direction K2 of the seedling placement table 9) from the fixing portion 290a toward the longitudinal feeding direction Y4. This can satisfactorily guide the seedling tray 8 to the abutment 290b.

The tip side portion 290d is formed in an inclined shape with respect to the contact portion 290b. Specifically, the tip end side portion 290d is formed in an inclined shape that shifts in a direction away from the seedling tray 8 (a direction away from the center of the seedling stage 9 in the body width direction K2) from the tip end side end portion of the abutting portion 290b toward the longitudinal feeding direction Y4.

The urging force of the urging member 289 urges the pressing member 290 in a direction to approach the seedling tray 8 about the pivot 287. Thereby, the pressing member 290 is biased by the biasing member 289 to press the seedling tray 8. By pressing the seedling tray 8 by the pressing member 290, the movement of the seedling tray 8 in the longitudinal feeding direction Y4 can be suppressed. The seedling tray 8 suppresses the movement of the longitudinal feeding direction Y4 by the frictional force between the pressing member 290 and the side surface of the seedling tray 8, and the frictional force (the urging force of the urging member 289) suppresses the movement of the seedling tray 8 in the longitudinal feeding direction Y4, but is set to a force that does not stop the movement of the seedling tray 8 in the longitudinal feeding direction Y4 due to the self weight of the seedling tray 8 having the bed soil containing moisture.

As shown in fig. 47 and 48, the restricting lever 291 is fixed to the base member 286. The limiter bar 291 has a first limiter 296. The first regulating portion 296 is located at a midway portion of the regulating lever 291 in the longitudinal feeding direction Y4. The first regulating portion 296 is formed in a linear shape and is located on the upper surface side of the side edge portion of the seedling tray 8, and regulates upward movement of the seedling tray 8. The first restriction portion 296 is fixed to an upper portion of the support plate 294.

The rear portion 297 of the regulating lever 291 has a first portion 297a protruding in an inclined direction shifted in a direction away from the tray 8 as going rearward of the longitudinal feeding direction Y4 from the rear end of the longitudinal feeding direction Y4 of the first regulating portion 296, and a second portion 297b protruding downward from the rear end of the longitudinal feeding direction Y4 of the first portion 297a and fixed to the mounting wall 286a of the base member 286.

The restriction lever 291 has a second restriction portion 298, which second restriction portion 298 restricts rotation of the pressing member 290 about the pivot 287 when the pressing member 290 does not press the seedling tray 8. The second restriction portion 298 is constituted by a front portion of the restriction lever 291. The second regulating portion 298 has a first portion 298a projecting in an inclined direction that shifts in a direction away from the seedling tray 8 as going from the front end of the longitudinal feeding direction Y4 of the first regulating portion 296 toward the longitudinal feeding direction Y4, and a second portion 298b projecting downward from the first portion 298a and being abutted by the front end side portion 290d of the pressing member 290.

When the seedling tray 8 passes through the pressing member 290, the pressing member 290 rotates around the pivot 287 toward the center side in the body width direction K2 of the mounting plate 10, but at this time, the tip side portion 290d of the pressing member 290 abuts against the second regulating portion 298, so that the rotation of the pressing member 290 can be regulated. Thus, the pressing member 290 enters the center side of the mounting plate 10, and can be prevented from interfering with the replenishment of the seedling tray 8. In addition, in replenishing the seedling tray 8, the labor of expanding the interval between the pressing members 290 opposed to each other in the machine body width direction K2 is not required.

The transplanting machine 1 of the present embodiment described above includes: a mounting plate 10, wherein the mounting plate 10 mounts at least one seedling tray 8 in a state that the at least one seedling tray 8 is inclined downward; a longitudinal feeding mechanism 244, wherein the longitudinal feeding mechanism 244 longitudinally feeds the seedling tray 8 downward along the mounting plate 10; and a tray pressing mechanism 282, wherein the tray pressing mechanism 282 suppresses movement of the seedling tray 8 in the longitudinal feeding direction Y4, and the tray pressing mechanism 282 has a biasing member 289 and a pressing member 290 biased by the biasing member 289 to press the seedling tray 8.

According to this structure, the pressing member 290 that presses the seedling tray 8 by being biased by the biasing member 289 can suppress the movement of the seedling tray 8 in the longitudinal feeding direction Y4. This can suppress bending of the seedling tray 8.

In addition, the pressing member 290 presses the side surface of the seedling tray 8.

According to this structure, by pressing the side surface of the seedling tray 8, the seedlings 7 can be prevented from being pinched by the pressing member 290.

The tray pressing mechanism 282 is disposed on the rear side in the longitudinal feeding direction Y4 with respect to the longitudinal feeding mechanism 244.

With this configuration, the tray pressing mechanism 282 can be attached to the tray pressing mechanism 282 satisfactorily without overlapping the vertical feed mechanism 244.

The tray pressing mechanism 282 includes a base member 286 attached to the mounting plate 10, a pivot 287 fixed to the base member 286, and a rotary cylinder 288 rotatably supported by the pivot 287, and the pressing member 290 includes a fixed portion 290a fixed to the rotary cylinder 288, an abutting portion 290b abutting against the seedling tray 8, and a connecting portion 290c connecting the fixed portion 290a and the abutting portion 290 b.

With this configuration, the pressing member 290 can be attached to the mounting plate 10 in a state of being assembled to the base member 286, and the assembly can be facilitated.

The pivot 287 and the rotary barrel 288 are disposed on the rear side of the pressing member 290 in the longitudinal feeding direction Y4, and the coupling portion 290c is formed in an inclined shape that shifts in a direction approaching the seedling tray 8 from the fixed portion 290a toward the longitudinal feeding direction Y4.

With this structure, the seedling tray 8 can be smoothly guided to the contact portion 290b.

In addition, the tray pressing mechanism 282 has a restricting lever 291 fixed to the base member 286, the restricting lever 291 having a first restricting portion 296 and a second restricting portion 298, the first restricting portion 296 being located on the upper surface side of the side edge portion of the seedling tray 8 and restricting upward movement of the seedling tray 8, the second restricting portion 298 restricting rotation of the pressing member 290 about the pivot 287 when the pressing member 290 does not press the seedling tray 8.

According to this structure, the first regulating portion 296 can prevent the seedling tray 8 from being lifted. When the seedling tray 8 passes through the pressing member 290, the pressing member 290 can be restricted from swinging toward the center portion side in the body width direction K2 of the mounting plate 10 by the second restricting portion 298. This can prevent the pressing member 290 from interfering with the replenishment of the seedling tray 8.

The tray pressing mechanism 282 includes a support plate 294 provided upright on the base member 286 and supporting the regulating lever 291, and a spring hooking member 292 fixed to the rotary cylinder 288, and the biasing member 289 is formed of a tension coil spring having one end portion locked to the spring hooking member 292, and the support plate 294 includes locking portions 295A and 295B for locking the other end portion of the tension coil spring.

According to this configuration, the restricting lever 291 and the biasing member 289 can be attached to the mounting plate 10 in a state of being assembled to the base member 286, and the assembly can be facilitated.

Further, the seedling-taking-out device 11 for taking out the seedlings 7 from the seedling trays 8 is provided, the placement plate 10 is capable of placing a plurality of seedling trays 8 in a vertically aligned manner along the inclined direction, and the seedling-taking-out device 11 is capable of taking out the seedlings 7 from the lowest seedling tray 8 among the plurality of seedling trays 8 placed on the placement plate 10, and the tray pressing mechanism 282 suppresses the seedling tray 8 located above the lowest seedling tray 8 from moving in the longitudinal feeding direction Y4.

According to this structure, the load applied to the seedling tray 8 from the upper side of the seedling tray 8 can be suppressed to the seedling tray 8 from which the seedlings 7 are taken out, and the bending of the seedling tray 8 from which the seedlings 7 are taken out can be suppressed.

The tray pressing mechanism 282 includes a first pressing mechanism 283 including a biasing member 289 and a pressing member 290, and a second pressing mechanism 284, the first pressing mechanism 283 being disposed on one side surface of the seedling tray 8, and the second pressing mechanism 284 being disposed on the other side surface of the seedling tray 8.

According to this structure, by pressing the seedling tray 8 from both sides in the body width direction K2, movement in the direction Y4 of the longitudinal feed of the seedling tray 8 can be effectively suppressed.

The transplanting machine 1 of the present embodiment further includes: a transplanting machine 4, wherein the transplanting machine 4 is provided with a plurality of transplanting bodies 12 which reciprocate up and down and are punched into a field 6 when descending so as to transplant seedlings 7; a traveling body 5, the traveling body 5 being disposed in front of the transplanting machine 4; a work machine attachment device 123, wherein the work machine attachment device 123 attaches the transplanting work machine 4 to the traveling body 5 so as to be capable of swinging about a rolling axis X1 extending in the machine body front-rear direction K1; and a rolling mechanism 135 for swinging the transplanting machine 4 around the rolling axis X1, wherein the plurality of transplanting bodies 12 include first transplanting bodies 12R and second transplanting bodies 12L arranged in the machine body width direction K2, and the rolling mechanism 135 swings the transplanting machine 4 around the rolling axis X1 so that a first height H1 of the first transplanting body 12R relative to a transplanting surface of the field 6 and a second height H2 of the second transplanting body 12L relative to the transplanting surface are set to predetermined heights.

According to this configuration, by swinging the transplanting work machine 4 around the rolling axis X1, the height of the first transplanting body 12R relative to the transplanting surface and the height of the second transplanting body 12L relative to the transplanting surface can be set to a predetermined height. Thereby, the transplanting depth of the seedling 7 transplanted by the first transplanting body 12R can be made identical to the transplanting depth of the seedling 7 transplanted by the second transplanting body 12L.

Further, the transplanting machine is provided with a control device 131 for controlling the rolling mechanism 135, and when the difference between the first height H1 and the second height H2 is equal to or greater than a predetermined value during transplanting of the seedling 7, the control device 131 swings the transplanting machine 4 about the rolling axis X1 in a direction to reduce the difference.

With this configuration, the sensitive operation of the transplanting machine 4 can be suppressed, and the rolling control for swinging the transplanting machine 4 around the rolling axis X1 can be stably performed.

The transplanting machine 4 has a first sensing roller 126R and a second sensing roller 126L, the first sensing roller 126R is disposed in front of the first transplanting body 12R and is configured to detect the height of the transplanting surface (first transplanting surface 144R) corresponding to the first transplanting body 12R, the second sensing roller 126L is disposed in front of the second transplanting body 12L and is configured to detect the height of the transplanting surface (second transplanting surface 144L) corresponding to the second transplanting body 12L, and the control device 131 swings the transplanting machine 4 around the rolling axis X1 in a direction to reduce the height difference based on the detection values detected by the first sensing roller 126R and the second sensing roller 126L.

According to this configuration, the height of the transplanting surface corresponding to the first transplanting body 12R is detected by the first sensing roller 126R, and the height of the transplanting surface corresponding to the second transplanting body 12L is detected by the second sensing roller 126L, whereby the first height H1 and the second height H2 can be easily detected.

The work machine attachment device 123 includes a work machine lifting mechanism 125 that lifts and lowers the transplanting work machine 4, and the control device 131 lifts and lowers the transplanting work machine 4 based on the irregularities of the field 6 detected by one of the first sensing roller 126R and the second sensing roller 126L, and calculates a height difference based on the height of the other sensing roller relative to the one sensing roller.

According to this configuration, the transplanting machine 4 is lifted and lowered based on the irregularities of the field 6 detected by one of the sensing rollers, whereby the lifting and lowering control of the transplanting machine 4 can be performed stably. Further, by calculating the difference in height between the first height H1 and the second height H2 with reference to one of the sensing rollers, it is possible to stably perform the rolling control for swinging the transplanting work machine 4 around the rolling axis X1.

When the height difference is smaller than the predetermined value, the transplanting machine 4 swings freely about the rolling axis X1 to absorb the height difference, and when the height difference is equal to or greater than the predetermined value, the control device 131 causes the rolling mechanism 135 to operate.

According to this configuration, the roll control for swinging the transplanting work machine 4 around the roll axis X1 can be stably performed.

The transplanting machine 4 further includes: a first roller bracket 146R, wherein the first roller bracket 146R supports the first sensing roller 126R in a vertically swingable manner; a first urging spring 147R, the first urging spring 147R urging the first roller bracket 146R downward; a first sensor mechanism 156R, the first sensor mechanism 156R detecting the amount of swing of the first roller bracket 146R; a second roller bracket 146L, the second roller bracket 146L supporting the second sensing roller 126L to be swingable up and down; a second urging spring 147L, the second urging spring 147L urging the second roller bracket 146L downward; and a second sensor mechanism 156L that detects the amount of swing of the second roller bracket 146L, the first sensor mechanism 156R having a first height detection sensor 157R and a first detection arm 159R, one end side of the first detection arm 159R being coupled to the detection piece of the first height detection sensor 157R and having an abutment piece 161 that is abutted against the first roller bracket 146R on the other end side thereof and swinging in linkage with the first roller bracket 146R, the second sensor mechanism 156L having a second height detection sensor 157L and a second detection arm 159L, one end side of the second detection arm 159L being coupled to the detection piece of the second height detection sensor 157L and having an abutment piece 161 that is abutted against the second roller bracket 146L on the other end side thereof and swinging in linkage with the second roller bracket 146L.

According to this structure, a mechanism for detecting the height of the transplanting face can be simply constructed.

In addition, the scroll mechanism 135 has: a roll motor 136, the roll motor 136 being mounted to the work implement assembly device 123; a rolling roller 137, the rolling roller 137 being rotationally driven by a rolling motor 136; and a rope 138 wound around the roller 137, one end of which is connected to one side in the machine body width direction K2 of the transplanting machine 4 and the other end of which is connected to the other side in the machine body width direction K2 of the transplanting machine 4.

According to this configuration, the rolling mechanism 135 for swinging the transplanting work machine 4 around the rolling axis X1 can be simply constructed.

The transplanting machine 1 of the present embodiment further includes: a graft frame 36; a swing frame 164, the swing frame 164 being supported so as to be capable of swinging up and down with respect to the implantation frame 36; a transplanting body 12, wherein the transplanting body 12 is arranged on the swinging frame 164, and the seedlings 7 are transplanted to the field 6; a roller frame 168, the roller frame 168 being supported by the swing frame 164 so as to be capable of swinging up and down; a ground roller (a soil covering wheel 62) mounted to the roller frame 168 and grounded to the field 6; and a transplanting depth adjusting mechanism 172, wherein the transplanting depth adjusting mechanism 172 can change the interval between the roller frame 168 and the swinging frame 164, and adjusts the transplanting depth of the seedling 7 by changing the interval, and the transplanting depth adjusting mechanism 172 comprises: a mechanism frame 173, the mechanism frame 173 being provided to the swing frame 164; an adjustment motor 174, the adjustment motor 174 being mounted to the mechanism frame 173; a drive mechanism 175, the drive mechanism 175 being driven by an adjustment motor 174; and a link member 176, wherein the link member 176 connects the driving mechanism 175 and the roller frame 168, and moves up and down in conjunction with the driving of the driving mechanism 175.

According to this configuration, the transplanting depth of the seedlings 7 can be adjusted by driving the driving mechanism 175 by the adjustment motor 174 to move the link member 176 up and down. Thereby, the transplanting depth of the seedling 7 can be easily adjusted.

In addition, the driving mechanism 175 has: a first gear 177, the first gear 177 being driven by the adjustment motor 174; and a second gear 178, the second gear 178 being rotated in mesh with the first gear 177, and moving the link member 176 up and down by the rotation.

According to this structure, the driving mechanism 175 can be constituted with a simple structure.

The first gear 177 is formed of a pinion gear, and the second gear 178 is formed of a sector gear having a coupling portion 178b to which the link member 176 is coupled.

According to this structure, the driving mechanism 175 can be more simply constituted.

The present invention further includes: a work machine lifting mechanism 125, the work machine lifting mechanism 125 lifting the transplanting frame 36; and a control device 131, wherein the control device 131 controls the working machine lifting mechanism 125, and the control device 131 lifts the transplanting frame 36 in a direction for returning the relative position of the swinging frame 164 to the transplanting frame 36 according to the change of the interval between the roller frame 168 and the swinging frame 164.

According to this configuration, the swing frame 164 can be returned to the center of the swing range with the adjustment of the transplanting depth.

The transplanting depth adjusting mechanism 172 includes a detecting unit 182, and the detecting unit 182 detects the amount of change in the interval between the roller frame 168 and the swing frame 164 and feeds the amount back to the control device 131.

According to this configuration, the detection unit 182 detects the amount of change in the interval between the roller frame 168 and the swing frame 164 and feeds the amount of change back to the control device 131, thereby enabling the swing frame 164 to be accurately returned to the center of the swing range.

In addition, the driving mechanism 175 has: a first gear 177, the first gear 177 being driven by the adjustment motor 174; and a second gear 178, wherein the second gear 178 is engaged with the first gear 177 to rotate, and the link member 176 is moved up and down by the rotation, and the detection unit 182 is a potentiometer for detecting the rotation amount of the second gear 178.

With this configuration, a mechanism for detecting the amount of change in the distance between the roller frame 168 and the swing frame 164 can be easily constructed.

The mechanism frame 173 is erected on the swing frame 164, the adjustment motor 174 is mounted on an upper portion of the mechanism frame 173, the pinion is rotatably mounted on an upper portion of the mechanism frame 173, a lower portion of the sector gear is pivotally supported on the mechanism frame 173, and a gear portion 178a engaged with the pinion is provided on an upper portion thereof.

According to this structure, the structure of the driving mechanism 175 can be simply constructed.

The transplanting machine 1 of the present embodiment further includes: a transplanting work machine 4, wherein the transplanting work machine 4 is provided with at least one transplanting body 12 for transplanting the seedling 7 in the field 6 and a transplanting depth adjusting mechanism 172 for adjusting the transplanting depth of the seedling 7 transplanted by the transplanting body 12; a traveling body 5, wherein the traveling body 5 is assembled with the transplanting operation machine 4 and travels; a driver's seat 3, the driver's seat 3 being mounted on a traveling body 5; a control device 131, wherein the control device 131 controls the transplanting depth adjusting mechanism 172; an operation unit 127, wherein the operation unit 127 is provided near the driver's seat 3, and transmits an operation signal for operating the transplanting depth adjusting mechanism 172 to the control device 131.

According to this configuration, since the transplanting depth adjusting mechanism 172 can be operated by the operating portion 127 provided in the vicinity of the driver's seat 3, the transplanting depth can be easily adjusted.

The operation unit 127 further includes a transplanting depth adjustment unit 190 for operating the transplanting depth adjustment mechanism 172.

The transplanting depth adjusting section 190 includes a rotation operation section (operation dial 191) that transmits an operation signal to the control device 131 by rotation, and a mark 192 that shows the rotation position of the rotation operation section (operation dial 191).

According to this structure, the transplanting depth can be easily adjusted by the rotation of the rotary operation portion (operation dial 191). Further, since the mark 192 showing the rotational position of the rotational operation portion (operation dial 191) is provided, the operation of the rotational operation portion (operation dial 191) can be easily performed.

The rotation operation unit (operation dial 191) transmits a first operation signal to the control device 131 by rotating to one side, and transmits a second operation signal to the control device 131 by rotating to the other side, the first operation signal being a signal for operating the transplanting depth adjustment mechanism 172 in a direction for making the transplanting depth of the seedling 7 deeper, the second operation signal being a signal for operating the transplanting depth adjustment mechanism 172 in a direction for making the transplanting depth of the seedling 7 shallower, and the transplanting depth adjustment unit 190 having a depth display unit 193 for displaying an operation direction of the rotation operation unit (operation dial 191).

With this configuration, the operation of the rotation operation portion (operation dial 191) can be performed more easily.

The present invention further includes: a work machine attachment device 123 for attaching the transplanting work machine 4 to the traveling body 5 so that the work machine attachment device 123 can swing around a rolling axis X1 extending in the machine body front-rear direction K1; and a rolling mechanism 135, wherein the rolling mechanism 135 is controlled by the control device 131, the transplanting machine 4 swings around the rolling axis X1, the transplanting bodies 12 are provided in plurality, the transplanting bodies 12 include a first transplanting body 12R and a second transplanting body 12L which are arranged in a row in the machine width direction K2 with the rolling axis X1 therebetween, the operation part 127 is provided with an angle adjusting part 194 for operating the rolling mechanism 135, the angle adjusting part 194 sends a first lowering signal or a second lowering signal to the control device 131, the first lowering signal is a signal for lowering the first transplanting body 12R of the transplanting machine 4 around the rolling axis X1, and the second lowering signal is a signal for lowering the second transplanting body 12L around the rolling axis X1.

According to this structure, the transplanting depths of the first transplanting body 12R and the second transplanting body 12L can be finely adjusted. Specifically, when the transplanting depths of the seedlings 7 transplanted by the first transplanting body 12R and the seedlings 7 transplanted by the second transplanting body 12L are different from each other with respect to the ridge having the same height, the transplanting depth can be finely adjusted by swinging the transplanting work machine 4 around the rolling axis X1 by the angle adjusting portion 194.

The angle adjusting unit 194 includes a first switch 195 for transmitting a first lowering signal to the control device 131 and a second switch 196 for transmitting a second lowering signal to the control device 131.

According to this configuration, the operation of lowering the first transplanting body 12R arrangement side and the operation of lowering the second transplanting body 12L arrangement side of the transplanting work machine 4 can be clarified.

Further, the transplanting machine 4 includes a machine lifting mechanism 125 controlled by the control device 131, and includes: a transplanting frame 36, wherein the transplanting frame 36 is lifted by the working machine lifting mechanism 125; a sensing roller 126, wherein the sensing roller 126 is supported by the transplanting frame 36 and moves up and down along with the transplanting surface of the field 6, and the height of the transplanting surface is detected; a swing frame 164, wherein the swing frame 164 is attached with the transplanting body 12 and is supported on the transplanting frame 36 in a manner capable of swinging up and down; and a cover wheel 62, wherein the cover wheel 62 is grounded and supports the swing frame 164, and the operation unit 127 has a transplanting unit height adjustment unit 197, and the transplanting unit height adjustment unit 197 corrects a difference between the sensing roller 126 and the cover wheel 62.

According to this structure, the difference between the sinking amounts of the sensing roller 126 and the earth covering wheel 62 can be corrected.

The transplanting portion height adjusting portion 197 further includes a lifting switch 198 and a lowering switch 199, the lifting switch 198 being configured to send a correction value for lifting the transplanting frame 36 to the control device 131, and the lowering switch 199 being configured to send a correction value for lowering the transplanting frame 36 to the control device 131.

According to this structure, the sinking amount of the sensing roller 126 and the earth covering wheel 62 can be corrected by raising or lowering the transplanting frame 36.

The transplanting machine 1 of the present embodiment further includes: a main frame 37; a first seedling stage 9R and a second seedling stage 9L, which are arranged in the body width direction K2 and are supported on the main frame 37 so as to be movable in the body width direction K2; a connection member 235, wherein the connection member 235 connects the first seedling stage 9R and the second seedling stage 9L; a first transplanting unit 63R, wherein the first transplanting unit 63R includes a first seedling taking-out device 11R for taking out the seedlings 7 from the seedling trays 8 placed on the first seedling placement table 9R, and a first transplanting device 35R for transplanting the seedlings 7 taken out by the first seedling taking-out device 11R into the field 6; a second transplanting unit 63L, wherein the second transplanting unit 63L is provided with a second seedling taking-out device 11L for taking out the seedlings 7 from the seedling trays 8 placed on the second seedling placing table 9L and a second transplanting device 35L for transplanting the seedlings 7 taken out by the second seedling taking-out device 11L into the field 6; and a lateral feeding mechanism 236, wherein the lateral feeding mechanism 236 is mounted on the first transplanting unit 63R and enables the first seedling stage 9R to be laterally fed in the machine body width direction K2, the first transplanting unit 63R and the second transplanting unit 63L are supported on the main frame 37 so as to be capable of being independently and respectively adjusted in position in the machine body width direction K2, the first seedling stage 9R and the first transplanting unit 63R are connected through the lateral feeding mechanism 236 and are capable of being integrally adjusted in position in the machine body width direction K2, and the second seedling stage 9L is mounted on the connecting member 235 so as to be capable of being adjusted in position in the machine body width direction K2.

According to this configuration, the first transplanting unit 63R and the second transplanting unit 63L are independently adjusted in position in the body width direction K2, and the first seedling stage 9R and the second seedling stage 9L move in accordance with the adjustment of the position of the first transplanting unit 63R. After the first transplanting unit 63R is adjusted in position, the second seedling stage 9L is adjusted in position in the body width direction K2 with respect to the connecting member 235. Thus, the interval between the first transplanting unit 63R and the first seedling stage 9R and the interval between the second transplanting unit 63L and the second seedling stage 9L can be adjusted without using a complicated linkage mechanism.

The drive main shaft 71 is provided, the drive main shaft 71 is disposed at the front of the first transplanting unit 63R and the second transplanting unit 63L so as to extend in the machine body width direction K2, and is supported by the main frame 37, power is transmitted to the infeed mechanism 236, the first transplanting unit 63R has a first unit frame 38R to which the first seedling taking-out device 11R and the first transplanting device 35R are attached, the second transplanting unit 63L has a second unit frame 38L to which the second seedling taking-out device 11L and the second transplanting device 35L are attached, and the first unit frame 38R and the second unit frame 38L are supported by the drive main shaft 71 so as to be movable in the machine body width direction K2.

According to this configuration, the drive main shaft 71 is used as a support member for the first unit frame 38R and the second unit frame 38L, whereby the structure can be simplified.

The main frame 37 includes a first connecting plate 61R disposed behind the first unit frame 38R and a second connecting plate 61L disposed behind the second unit frame 38L, the first unit frame 38R includes a first attaching plate 76R, the first attaching plate 76R is attached to the first connecting plate 61R so as to be able to be adjusted in position in the body width direction K2, and the second unit frame 38L includes a second attaching plate 76L, and the second attaching plate 76L is attached to the second connecting plate 61L so as to be able to be adjusted in position in the body width direction K2.

According to this structure, the space adjustment structure of the first transplanting unit 63R and the first seedling stage 9R and the second transplanting unit 63L and the second seedling stage 9L can be simplified.

The main frame 37 includes rail members (first rail 56 and second rail 58) extending in the machine-body width direction K2, the first seedling stage 9R includes a first roller 234R supported on the rail members so as to be movable in the machine-body width direction K2, and a first holder member 221R to which the first roller 234R is attached, the second seedling stage 9L includes a second roller 234L supported on the rail members so as to be movable in the machine-body width direction K2, and a second holder member 221L to which the second roller 234L is attached, the first holder member 221R includes a first support plate 227R to which the coupling member 235 is attached, and the second holder member 221L includes a second support plate 227L to which the coupling member 235 is attached.

According to this structure, the space adjustment structure between the first seedling stage 9R and the second seedling stage 9L can be simplified.

The transplanting machine 1 of the present embodiment includes a first seedling placement table 9R and a second seedling placement table 9L on which the seedling trays 8 are placed, and a longitudinal feeding mechanism 244 for conveying the seedling trays 8 placed on the first seedling placement table 9R and the second seedling placement table 9L in the longitudinal direction, and the longitudinal feeding mechanism 244 includes: a longitudinal feeding main shaft 252 provided throughout the first seedling stage 9R and the second seedling stage 9L, and to which longitudinal feeding power for conveying the seedling tray 8 in the longitudinal direction is transmitted; a first longitudinal feeding working shaft 253R provided to the first seedling stage 9R, and conveying the seedling tray 8 placed on the first seedling stage 9R in the longitudinal direction; a second longitudinal feeding working shaft 253L provided to the second seedling stage 9L, and conveying the seedling tray 8 placed on the second seedling stage 9L in the longitudinal direction; a first longitudinal feed clutch 262R, the first longitudinal feed clutch 262R being capable of intermittently transmitting power from the longitudinal feed main shaft 252 to the first longitudinal feed working shaft 253R; and a second longitudinal feed clutch 262L, the second longitudinal feed clutch 262L being capable of intermittently transmitting power from the longitudinal feed main shaft 252 to the second longitudinal feed working shaft 253L.

According to this configuration, since the first longitudinal feed clutch 262R capable of intermittently transmitting power from the longitudinal feed main shaft 252 to the first longitudinal feed operating shaft 253R and the second longitudinal feed clutch 262L capable of intermittently transmitting power from the longitudinal feed main shaft 252 to the second longitudinal feed operating shaft 253L are provided, it is possible to perform longitudinal feed driving of only any one of the seedling trays 8 placed on the first seedling placement table 9R and the seedling trays 8 placed on the second seedling placement table 9L.

In addition, the longitudinal feed spindle 252 has: a rotating body 255, the rotating body 255 being transmitted with longitudinal feeding power; and a shaft body 256 fixed to the rotating body 255 and provided throughout the first seedling stage 9R and the second seedling stage 9L, the first longitudinal feed operating shaft 253R having a first input portion 258R relatively rotatably fitted in the shaft body 256 and adjacent to the rotating body 255, the first longitudinal feed clutch 262R having: a drive engagement portion 263, the drive engagement portion 263 being provided to the rotating body 255; a clutch main body 264, wherein the clutch main body 264 is movably fitted in the axial direction and integrally rotatable to the first input portion 258R; and a driven engagement portion 265 provided on the clutch main body 264, and engaged with and disengaged from the driving engagement portion 263 by moving the clutch main body 264 in the axial direction.

According to this configuration, the vertical feeding power for vertically feeding the seedling tray 8 placed on the first seedling stage 9R can be interrupted, and the power can be transmitted to the second seedling stage 9L.

The shaft body 256 includes a first shaft 256A on the first seedling stage 9R side, a second shaft 256B on the second seedling stage 9L side, and a coupling member 257 coupling the first shaft 256A and the second shaft 256B.

With this configuration, the assembly of the longitudinal feed main shaft 252 can be facilitated.

The second seedling stage 9L and the first seedling stage 9R are arranged in the machine-body width direction K2, and are adjustable at intervals in the machine-body width direction K2 with respect to the first seedling stage 9R, the longitudinal feed main shaft 252 has an extension shaft portion 256a protruding from the second seedling stage 9L to the opposite side of the first seedling stage 9R, the second longitudinal feed working shaft 253L has a second input portion 258L fitted in the extension shaft portion 256a so as to be rotatable with respect to each other, and the second longitudinal feed clutch 262L has: a rotation part 271, wherein the rotation part 271 is integrally rotatably fitted to the extension shaft 256a so as to be movable in the axial direction, and is attached to the second seedling stage 9L; and a clutch shifter 272, wherein the clutch shifter 272 is movably fitted to the second input portion 258L in the axial direction so as to be integrally rotatable, and is engaged with and disengaged from the rotating portion 271 by being moved in the axial direction.

According to this configuration, the second vertical feed clutch 262L can be configured to interrupt the vertical feed power for vertically feeding the seedling tray 8 placed on the second seedling stage 9L and to allow the interval between the second seedling stage 9L and the first seedling stage 9R to be adjusted.

In addition, the first longitudinal feed clutch 262R is provided on the opposite side of the first seedling stage 9R from the second seedling stage 9L.

According to this configuration, the first seedling stage 9R can be brought close to the second seedling stage 9L.

The transplanting machine 1 of the present embodiment further includes: a transplanting operation machine 4, wherein the transplanting operation machine 4 is used for transplanting the seedlings 7 in the field 6; a traveling body 5, wherein the traveling body 5 is assembled with the transplanting operation machine 4 and travels; and a driver's seat 3, wherein the driver's seat 3 is mounted on a traveling body 5, and the transplanting machine 4 comprises: a mounting plate 10 for mounting the seedling tray 8 in a state in which the seedling tray 8 is inclined downward by the mounting plate 10; a longitudinal feeding mechanism 244, wherein the longitudinal feeding mechanism 244 longitudinally feeds the seedling tray 8 downward along the mounting plate 10; a seedling taking-out device 11, wherein the seedling taking-out device 11 takes out the seedlings 7 from the seedling trays 8 on the carrying plate 10; a reversing guide 13, wherein the reversing guide 13 reverses the seedling tray 8 from which the seedlings 7 are taken out by the seedling taking-out device 11 and guides the seedling tray to the back surface side of the mounting plate 10; and an empty tray guide 14 for guiding the seedling tray 8 inverted by the inversion guide 13 to the upper part of the back surface of the mounting plate 10, wherein the traveling body 5 has an empty tray receiving part 15, and the empty tray receiving part 15 is arranged between the driver seat 3 and the empty tray guide 14 and receives the empty seedling tray 8 sent out from the empty tray guide 14.

According to this configuration, the empty trays 8 fed from the empty tray guide 14 can be received by the empty tray receiving portion 15 provided between the driver seat 3 and the empty tray guide 14, and therefore, the empty trays 8 can be easily collected.

The traveling body 5 has a front pedal 29a on which the feet of the operator are placed in front of and below the driver's seat 3, and the empty tray receiving portion 15 is disposed above the front pedal 29a and below the driver's seat 3.

According to this configuration, the empty tray receiving unit 15 can be disposed at a position where the operator can easily collect the empty tray from the driver's seat 3 side.

The empty tray guide 14 has an upper guide portion 14c at an upper portion, and the upper guide portion 14c is located above the empty tray receiving portion 15 and extends toward the driver seat 3.

According to this configuration, the empty seedling trays 8 fed from the empty tray guides 14 can be guided to the empty tray receiving portion 15 by the upper guide portion 14 c.

The upper guide portion 14c is inclined so as to shift downward as going forward.

According to this configuration, the empty seedling trays 8 can be satisfactorily guided to the empty tray receiving section 15 by the upper guide section 14 c.

The rear end of the empty tray receiving portion 15 is located below the front end of the upper guide portion 14 c.

With this configuration, the empty Miao Tuopan can be prevented from falling down between the empty tray receiver 15 and the empty tray guide 14.

The empty tray receiving portion 15 has at least one rear pedal 33 on which the operator places his/her feet.

According to this configuration, the seedling tray 8 can be easily supplied to the mounting plate 10 by placing the foot on the rear pedal 33. Further, the rear pedal 33 is used in the empty tray receiving portion 15, whereby the components can be used as well.

The transplanting work machine 4 further includes a plurality of seedling stages 9 including a mounting plate 10, a vertical feed mechanism 244, a reversing guide 13, and an empty tray guide 14, and the plurality of seedling stages 9 includes a first seedling stage 9R and a second seedling stage 9L arranged in the machine body width direction K2, and the empty tray receiving portion 15 is provided in correspondence with the front of the first seedling stage 9R and the second seedling stage 9L.

According to this configuration, the empty seedling trays 8 discharged from the plurality of seedling stages 9 can be easily recovered.

The empty tray receiving unit 15 includes a plurality of rear pedals 33 on which the operator places his/her feet, and the plurality of rear pedals 33 includes a first rear pedal 33R disposed in front of the first seedling stage 9R and a second rear pedal 33L disposed in front of the second seedling stage 9L.

According to this configuration, by providing the rear pedal 33 corresponding to the first seedling stage 9R and the second seedling stage 9L, the seedling tray 8 can be easily supplied to each of the first seedling stage 9R and the second seedling stage 9L.

While the embodiment of the present invention has been described above, it should be understood that the embodiment disclosed herein is illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims, rather than by the description above, and all changes that come within the meaning and range of equivalency of the claims are intended to be embraced therein.

Description of the reference numerals

6 fields

7 seedlings

8 seedling tray

9R first seedling carrying table

9L second seedling carrying table

11R first seedling taking-out device

11L second seedling take-out device

35R first transplanting device

35L second transplanting device

37 main frame

38R first unit frame

38L second unit frame

56 track component (first track)

58 track component (second track)

61R first connecting plate

61L second connecting plate

63R first graft unit

63L second graft unit

71 drive spindle

76R first mounting plate

76L second mounting plate

221R first holder member

221L second cage member

227R first pillar plate

227L second pillar plate

234R first roller

234L second roller

235 connecting component

236 infeed mechanism

K2 machine body width direction.

Claims (9)

1. A transplanting machine, wherein the transplanting machine is provided with:

a main frame;

a first seedling stage and a second seedling stage which are arranged in the body width direction and are supported on the main frame so as to be movable in the body width direction;

a connecting member that connects the first seedling stage and the second seedling stage;

a first transplanting unit having a first seedling taking-out device that takes out seedlings from a seedling tray placed on the first seedling placement table, and a first transplanting device that transplants the seedlings taken out by the first seedling taking-out device to a field;

a second transplanting unit having a second seedling taking-out device that takes out seedlings from a seedling tray placed on the second seedling placement table, and a second transplanting device that transplants the seedlings taken out by the second seedling taking-out device to a field; and

a transverse feeding mechanism which is arranged on the first transplanting unit and enables the first seedling carrying platform to transversely feed along the width direction of the machine body,

The first transplanting unit and the second transplanting unit are respectively and independently supported on the main frame in a mode of being capable of adjusting positions in the width direction of the machine body,

the first seedling stage and the first transplanting unit are connected by the transverse feeding mechanism, the first seedling stage and the second seedling stage connected with the first seedling stage by the connecting component can integrally carry out position adjustment along the machine body width direction and the same direction as the moving direction of the first transplanting unit along with the position adjustment along the machine body width direction of the first transplanting unit,

the second seedling stage is mounted to the connecting member so as to be positionally adjustable by changing a mounting position in a body width direction relative to the connecting member.

2. A transplanting machine, wherein the transplanting machine is provided with:

a main frame;

a first seedling stage and a second seedling stage which are arranged in the body width direction and are supported on the main frame so as to be movable in the body width direction;

a connecting member that connects the first seedling stage and the second seedling stage;

A first transplanting unit having a first seedling taking-out device that takes out seedlings from a seedling tray placed on the first seedling placement table, and a first transplanting device that transplants the seedlings taken out by the first seedling taking-out device to a field;

a second transplanting unit having a second seedling taking-out device that takes out seedlings from a seedling tray placed on the second seedling placement table, and a second transplanting device that transplants the seedlings taken out by the second seedling taking-out device to a field;

the transverse feeding mechanism is arranged on the first transplanting unit and enables the first seedling carrying platform to transversely feed along the width direction of the machine body; and

a drive spindle which is disposed in front of the first transplanting unit and the second transplanting unit so as to extend in the body width direction, is supported by the main frame, transmits power to the infeed mechanism,

the first transplanting unit and the second transplanting unit are respectively and independently supported on the main frame in a mode of being capable of adjusting positions in the width direction of the machine body,

the first seedling stage is connected to the first transplanting unit via the transverse feeding mechanism, and can integrally adjust the position along the width direction of the machine body,

The second seedling stage is mounted on the connecting member in a position adjustable manner along the width direction of the machine body,

the first transplanting unit is provided with a first unit frame provided with the first seedling taking-out device and the first transplanting device,

the second transplanting unit is provided with a second unit frame provided with the second seedling taking-out device and the second transplanting device,

the first unit frame and the second unit frame are supported on the drive main shaft in a manner capable of moving along the width direction of the machine body,

the main frame has a first connecting plate disposed at the rear of the first unit frame and a second connecting plate disposed at the rear of the second unit frame,

the first unit frame has a first mounting plate mounted to the first connecting plate so as to be position-adjustable in the body width direction,

the second unit frame has a second mounting plate mounted to the second connecting plate so as to be positionally adjustable in the body width direction.

3. The transplanting machine according to claim 1 or 2, wherein,

the main frame has a rail member extending in a width direction of the machine body,

The first seedling stage comprises a first roller supported on the track member in a manner capable of moving along the width direction of the machine body and a first holder member provided with the first roller,

the second seedling stage comprises a second roller supported on the track member in a manner capable of moving along the width direction of the machine body and a second retainer member provided with the second roller,

the first holder member has a first strut plate mounted to the link member,

the second cage member has a second strut plate mounted to the coupling member.

4. A transplanting machine, wherein the transplanting machine is provided with:

a main frame;

a first seedling stage and a second seedling stage which are arranged in the body width direction and are supported on the main frame so as to be movable in the body width direction;

a connecting member that connects the first seedling stage and the second seedling stage;

a first transplanting unit having a first seedling taking-out device that takes out seedlings from a seedling tray placed on the first seedling placement table, and a first transplanting device that transplants the seedlings taken out by the first seedling taking-out device to a field;

A second transplanting unit having a second seedling taking-out device that takes out seedlings from a seedling tray placed on the second seedling placement table, and a second transplanting device that transplants the seedlings taken out by the second seedling taking-out device to a field; and

a transverse feeding mechanism which is arranged on the first transplanting unit and enables the first seedling carrying platform to transversely feed along the width direction of the machine body,

the first transplanting unit and the second transplanting unit are respectively and independently supported on the main frame in a mode of being capable of adjusting positions in the width direction of the machine body,

the first seedling stage is connected to the first transplanting unit via the transverse feeding mechanism, and can integrally adjust the position along the width direction of the machine body,

the second seedling stage is mounted on the connecting member in a position adjustable manner along the width direction of the machine body,

the main frame has a rail member extending in a width direction of the machine body,

the first seedling stage comprises a first roller supported on the track member in a manner capable of moving along the width direction of the machine body and a first holder member provided with the first roller,

the second seedling stage comprises a second roller supported on the track member in a manner capable of moving along the width direction of the machine body and a second retainer member provided with the second roller,

The first holder member has a first strut plate mounted to the link member,

the second cage member has a second strut plate mounted to the coupling member.

5. A transplanting machine, wherein the transplanting machine is provided with:

a first seedling stage and a second seedling stage on which Miao Tuopan are placed; and

a longitudinal feeding mechanism for conveying seedling trays placed on the first seedling placement table and the second seedling placement table along the longitudinal direction,

the longitudinal feeding mechanism comprises:

a longitudinal feeding main shaft which is provided throughout the first and second seedling stages and is transmitted with longitudinal feeding power for conveying the seedling trays in the longitudinal direction;

a first longitudinal feeding working shaft which is arranged on the first seedling carrying table and is used for conveying the seedling tray carried on the first seedling carrying table along the longitudinal direction;

the second longitudinal feeding working shaft is arranged on the second seedling carrying table and is used for conveying the seedling trays carried on the second seedling carrying table along the longitudinal direction;

a first longitudinal feed clutch capable of intermittently transmitting power from the longitudinal feed main shaft to the first longitudinal feed working shaft; and

A second longitudinal feed clutch capable of intermittently transmitting power from the longitudinal feed main shaft to the second longitudinal feed working shaft.

6. The transplanting machine according to claim 5, wherein,

the longitudinal feed spindle has: a rotating body to which the longitudinal feeding power is transmitted; and a shaft body fixed to the rotating body and provided throughout the first seedling stage and the second seedling stage,

the first longitudinal feeding working shaft is provided with a first input part which is embedded in the shaft body in a relatively rotatable manner and is adjacent to the rotating body,

the first longitudinal feed clutch has: a drive engagement portion provided to the rotating body; a clutch body that is movably fitted to the first input unit in an axial direction and integrally rotatable; and a driven engagement portion provided on the clutch body, and configured to be engaged with and disengaged from the drive engagement portion by moving the clutch body in an axial direction.

7. The transplanting machine according to claim 6, wherein,

the shaft body has a first shaft on the first seedling stage side, a second shaft on the second seedling stage side, and a coupling body coupling the first shaft and the second shaft.

8. The transplanting machine according to any one of claims 5 to 7, wherein,

the second seedling stage and the first seedling stage are arranged in the width direction of the machine body and can be adjusted at intervals relative to the first seedling stage in the width direction of the machine body,

the longitudinal feeding main shaft has an extension shaft portion protruding from the second seedling stage to a side opposite to the first seedling stage,

the second longitudinal feed working shaft has a second input portion relatively rotatably fitted to the extension shaft portion,

the second longitudinal feed clutch has: a rotating part which is movably fitted to the extension shaft part in the axial direction and integrally rotatable, and is attached to the second seedling stage; and a clutch shifter that is movably fitted to the second input unit in the axial direction and integrally rotatable, and that is movable in the axial direction to be engaged with and disengaged from the rotating unit.

9. The transplanting machine according to claim 8, wherein,

the first longitudinal feed clutch is provided on the opposite side of the first seedling stage from the second seedling stage.

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