JP7391549B2 - transplant machine - Google Patents

Description

The present invention relates to, for example, a transplanter for planting seedlings in a field.

Conventionally, a transplanter disclosed in Patent Document 1 has been known.
The transplanting machine disclosed in Patent Document 1 has a planting machine attached to the rear of the traveling body. The planting machine has a mounting plate on which the seedling tray is mounted in a downwardly inclined state. Seedlings are taken out from the seedling tray on the placement plate by a seedling take-out device, and the seedlings are vertically fed downward along the placement plate by a vertical feed mechanism. After the seedlings have been taken out, the seedling tray is reversed by the reversing guide and guided to the back side of the placement plate. The empty seedling tray guided to the back side of the placement plate is guided to the upper back side of the placement plate by an empty tray guide arranged on the back side of the placement plate, and is taken out at the upper back side of the placement plate.

Japanese Patent Application Publication No. 9-308324

In the transplanting machine disclosed in Patent Document 1, the seedling tray is easily curved, so when it is discharged from the empty tray guide, there is a risk that the seedling tray will curve downward from the top end side of the empty tray guide and fall. There is. Therefore, there is a problem in that it is difficult to collect empty seedling trays.
SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a transplanter that can easily collect empty seedling trays.

A transplanting machine according to one aspect of the present invention includes a planting machine that plants seedlings in a field, a traveling body that runs with the planting machine attached thereto, and a part that is mounted on the traveling body and where an operator is seated. a driver's seat having a seat; the planting work machine includes a mounting plate on which the seedling tray is placed in a downwardly slanted state; and a mounting plate on which the seedling tray is placed downwardly along the placing plate. A vertical feeding mechanism that feeds the seedlings vertically, a seedling take-out device that takes out the seedlings from the seedling tray on the placement plate, and a seedling tray that is turned over after the seedlings have been taken out by the seedling take-out device to the rear side of the placement plate. and an empty tray guide including a guide main body portion that guides the seedling tray inverted by the reversing guide to the upper rear surface of the placement plate, and the traveling body is arranged between the driver's seat and the tray. an empty tray receiving part disposed between the empty tray guide arranged at a distance behind the driver's seat to receive the empty seedling tray sent out from the empty tray guide; The upper part is located above the lower end of the driver's seat and behind the rear end of the empty tray receiving part, and the empty tray receiving part is located below the lower end of the driver's seat, and the empty tray receiving part is located on the driver's seat side. The empty tray guide has an upper guide portion at the top from which the empty seedling tray is sent out, and the upper guide portion extends from the front end of the upper guide portion toward the empty tray guide. from the upper part of the guide main body part toward the driver's seat side and at the rear end part of the empty tray receiving part so that the part is located at a height corresponding to the midway position of the seat part in the vertical direction. The vertical distance between the front end of the upper guide part and the rear end of the empty tray receiver is equal to the distance between the front end of the upper guide part and the rear end of the empty tray receiver. The distance is such that a plurality of the seedling trays can be stacked and arranged between the seedling tray and the seedling tray.

Further, the traveling body has a front step on which an operator's feet are placed in front of and below the driver's seat, and the empty tray receiving part is arranged above the front step.
Further, the upper guide portion extends from the upper portion of the guide main body portion in a downwardly inclined shape toward the lower side of the rear lower end of the driver's seat .

Further, the traveling body has a floor seat disposed below the driver's seat and including the front step, and the floor seat has an extension provided at a rear part of the floor seat and at a higher position than the front step. The empty tray receiving portion includes the extending portion.
Further, the empty tray receiving section includes at least one rear step on which an operator rests, the rear step being disposed behind the extending section and at approximately the same height as the extending section. ing .
Furthermore, the empty tray receiving section has at least one rear step on which an operator can place his or her feet.

Further, the planting work machine has a plurality of seedling mounting stands including the above-mentioned placing plate, the above-mentioned vertical feeding mechanism, the above-mentioned reversing guide, and the above-mentioned empty tray guide, and the plurality of seedling mounting stands are arranged in the width direction of the machine body. It includes a first seedling mounting stand and a second seedling mounting stand arranged, and the empty tray receiving portion is provided corresponding to the front of the first seedling mounting stand and the second seedling mounting stand.
Further, the empty tray receiving section has a plurality of rear steps on which an operator places his/her feet, and the plurality of rear steps include a first rear step disposed in front of the first seedling platform, and a second rear step arranged in front of the first seedling platform. and a second rear step disposed in front of the seedling platform.

According to the above configuration, the empty seedling tray sent out from the empty tray guide can be received by the empty tray receiving section provided between the driver's seat and the empty tray guide, so that the collection of empty seedling trays is facilitated. It's easy to do.

It is a schematic side view of a transplanter. FIG. 3 is a schematic plan view of the transplanter. FIG. 3 is a side view of the aircraft. FIG. 3 is a side view showing the movement path of the seedling tray and the empty tray receiving section. It is a perspective view of the rear part of a traveling body. It is a top view of a seedling tray. It is a front view of a seedling tray. FIG. 3 is a plan view of the main frame. FIG. 3 is a side view of the main frame. FIG. 3 is a rear view of the main frame. FIG. 3 is a plan view of the transplant unit. FIG. 3 is a rear view showing front side support of the unit frame. It is a top view which shows the rear side support of a unit frame. FIG. 3 is a side view showing rear support of the unit frame. It is a side view of the power input part which inputs power to a drive main shaft. It is a top view of a power input part. It is a side view of an irrigation pump and an irrigation transmission mechanism. It is a top view of an irrigation pump and an irrigation transmission mechanism. It is a rear view of an irrigation pump and an irrigation transmission mechanism. It is a schematic back view showing the discharge route from an irrigation pump. FIG. 3 is a side view showing the work machine mounting device. FIG. 3 is a rear view of the main frame support structure. FIG. 3 is a rear view of the rolling mechanism. It is a side view of a rolling mechanism. FIG. 3 is a side view of the sensing roller support structure. FIG. 3 is a rear view of the sensing roller support structure. FIG. 3 is a rear view of the sensing roller support structure. It is a top view of a 1st transplantation unit and a 2nd transplantation unit. It is a side view showing a planting depth adjustment mechanism and a planting elevating mechanism. It is a back view showing a planting depth adjustment mechanism. It is a side view showing a covering pressure adjustment mechanism. FIG. 3 is a plan view showing the operation section. It is a top view showing a planting raising and lowering mechanism. It is a side view of a planting raising/lowering mechanism. It is a side view showing the attachment part of an irrigation pipe. FIG. 3 is a partially cross-sectional rear view showing the attachment portion of the irrigation pipe. It is a top view showing a main frame and a seedling stand. It is a top view which shows a seedling mounting stand. It is a rear view which shows the connection structure of a 1st seedling mounting stand and a 2nd seedling mounting stand. It is a side view of the lower part of a seedling stand. FIG. 3 is a rear view showing the lateral feed mechanism. It is a side view showing a tray feeding mechanism and a seedling take-out device. FIG. 3 is a rear cross-sectional view showing the vertical feed drive mechanism. FIG. 3 is a rear sectional view showing the right side of the vertical feed drive mechanism. It is a figure showing the left side of a vertical feed drive mechanism. FIG. 3 is a side view showing the vertical feed operation mechanism. FIG. 3 is a plan view showing the tray holding mechanism. FIG. 3 is a side view showing the tray holding mechanism. FIG. 3 is a rear view showing the tray holding mechanism. It is a side view which shows a 1st holding|suppressing mechanism. It is a side view which shows a 2nd holding|suppressing mechanism. FIG. 3 is a side view of the main frame with a leveling board attached. FIG. 3 is a rear view of the main frame with a leveling board attached. It is a side view of a leveling board and an attachment part. FIG. 3 is a rear view of the attachment part of the leveling board.

An embodiment of the present invention will be described below with appropriate reference to the drawings.
FIG. 1 is a schematic side view showing the overall configuration of a transplanter 1 according to this embodiment. FIG. 2 is a schematic plan view of the transplanter 1.
As shown in FIG. 1, a transplanter 1 is a passenger-type transplanter (a passenger transplanter) having a driver's seat 3 on which an operator (driver) 2 is seated.

As shown in FIGS. 1 and 2, the transplanting machine 1 includes a planting machine 4 for planting seedlings 7 in a field 6, and a traveling body 5 on which the planting machine 4 is mounted and runs. Therefore, the transplanting machine 1 is a machine that plants seedlings 7 in the field 6 with the planting machine 4 while traveling through the field 6 with the traveling body 5.
In the embodiment of the present invention, the direction in front of the operator 2 seated in the driver's seat 3 of the transplanter 1 (direction of arrow A1 in FIGS. The explanation will be made assuming that the direction of arrow A2) is the rear direction. Further, the direction of arrow K1 in FIGS. 1 and 2 is referred to as the front-rear direction of the fuselage. Further, the right side of the operator 2 (in the direction of arrow B1 in FIG. 2) will be referred to as the right side, and the left side of the operator 2 (in the direction of arrow B2 in FIG. 2) will be referred to as the left side.

Further, as shown in FIG. 2, the horizontal direction, which is a direction orthogonal to the machine body longitudinal direction K1, will be described as the machine body width direction K2. The direction from the center in the width direction of the fuselage to the right or left will be described as the outward direction of the fuselage. In other words, the outer side of the fuselage is a direction away from the center of the fuselage in the width direction K2 of the fuselage. The direction opposite to the outside of the fuselage will be described as inside the fuselage. In other words, the inside of the fuselage is the width direction K2 of the fuselage, which is a direction approaching the center of the fuselage in the width direction.

First, an overview of the planting machine 4 will be explained.
As shown in FIG. 1, the planting machine 4 has a seedling mounting table 9 on which a plurality of seedling trays (cell trays) 8 having a large number of seedlings 7 are placed.
As shown in FIGS. 6 and 7, the seedling tray 8 is made of plastic, has a thin wall, is flexible, and has a rectangular shape in plan view. The seedling tray 8 has a large number of pot portions 8a arranged vertically and horizontally at predetermined pitches in a grid pattern. The opening edge of the pot portion 8a is connected by a flat upper wall 8b. The pot portion 8a protrudes from the top wall 8b toward the back side. In the seedling tray 8, seedlings 7 (soil block seedlings) are grown by supplying bed soil to the pot portion 8a, sowing seeds in the bed soil, and raising the seedlings.

As shown in FIG. 3, the seedling mounting table 9 has a mounting plate 10 on which the seedling tray 8 is mounted in a downwardly inclined state (inclined in a direction that moves rearward as it goes downward). As shown in FIG. 1, the seedlings 7 on the seedling tray 8 are taken out one by one by a seedling take-out device 11 arranged at the rear of the lower part of the seedling stand 9 and supplied to the planting body 12 below. The planting body 12 reciprocates up and down and receives the seedling 7 at the top dead center position. Further, the planting body 12 rushes into the field 6 when descending and plants the seedlings 7. Specifically, the planting body 12 is formed of an opening device that can be opened and closed back and forth, and when it is closed, it holds the seedlings 7 inside and moves downwards, and when it enters the field 6, it opens back and forth to open the field. A planting hole is formed in the hole 6, and a seedling 7 is dropped into the hole and planted. A planting machine 4 takes out seedlings 7 from a seedling tray 8 and automatically plants them in a field 6 at predetermined intervals.

As shown in FIG. 3, the mounting plate 10 is capable of mounting a plurality of seedling trays 8 vertically in line along the inclination direction. The seedling tray 8 is arranged with its longitudinal direction aligned with the inclination direction. The seedling extraction device 11 takes out the seedlings 7 from the lowest seedling tray 8 (8A) among the plurality of seedling trays 8 placed on the mounting plate 10. Further, the seedling take-out device 11 takes out the seedlings 7 one by one from the seedling tray 8 while intermittently horizontally transporting the seedling platform 9 in the body width direction K2 by one pitch of the pot portion 8a. When the seedlings 7 in a horizontal row are taken out from the seedling tray 8, the seedling tray 8 is vertically fed downward along the inclination direction by one pitch of the pot portion 8a. Thereby, the next row of seedlings 7 can be taken out. Thereafter, the seedling tray 9 is moved horizontally in the opposite direction to the previous direction to take out the seedlings 7, and when the seedlings 7 in a horizontal row are taken out, the seedling tray 8 is sent vertically. By repeating this in sequence, all the seedlings 7 are taken out from the seedling tray 8.

As shown in FIG. 3, the seedling tray 9 has a reversing guide 13 at the bottom, and the seedling tray 8 after the seedlings 7 have been taken out by the seedling take-out device 11 is moved vertically to the reversing guide 13. Sent. The seedling tray 8 sent to the reversing guide 13 is guided by the reversing guide 13 and guided to the back side (lower surface side) 10A of the mounting plate 10. The seedling mounting table 9 also has an empty tray guide 14 on the back side of the mounting plate 10. The empty tray guide 14 has a curved portion 14a at the bottom. The curved portion 14a takes over the seedling tray 8 from the reversing guide 13 and guides it to the guide main body portion 14b arranged on the back side of the mounting plate 10. The empty seedling tray 8 is guided to the upper back surface of the mounting plate 10 by the guide main body part 14b. The empty tray guide 14 has an upper guide portion 14c at the top. The upper guide portion 14c extends forward from the upper end of the guide body portion 14b toward the driver's seat 3 side. Further, the upper guide portion 14c is formed in a shape that is slightly inclined downward toward the front (an inclined shape that moves downward toward the front). The empty seedling tray 8 can be taken out from the upper guide part 14c.

Next, the traveling body 5 will be explained in detail.
As shown in FIG. 1, the traveling body 5 is arranged in front of the planting 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 that the body 16 can travel. The fuselage 16 includes a prime mover 18, a prime mover frame 19, a mission case 20, and a fuselage frame 21. The prime mover 18 is, for example, a diesel engine. The prime mover 18 is arranged 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 accommodates a transmission mechanism that changes the speed of the power output from the prime mover 18. A prime mover frame 19 is connected to the front of the mission case 20. The fuselage frame 21 is arranged at the rear of the mission case 20. In other words, the body frame 21 is arranged at the rear of the traveling body 5. A mission case 20 is connected to the front part of the body frame 21. The fuselage frame 21 has a support body 22 at the rear. The driver's seat 3 is attached to the support body 22 via a seat attachment member 31.

The driver's seat 3 is arranged at the rear of the fuselage 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 (rests the buttocks and thighs). The backrest portion 3B is a portion on which the seated operator 2 leans his or her back, and is provided at the rear of the seat portion 3A so as to extend upward.
As shown in FIGS. 1 and 2, in this 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 the power output from the transmission case 20 being transmitted thereto.

As shown in FIGS. 1 and 2, in front of the driver's seat 3, a steering handle 25 for steering the traveling body 5 (front wheels 23), a bonnet 26, and a steering column 27 are provided. A fuel tank and the like are housed within the bonnet 26. A prime mover 18 is arranged below the hood 26. The steering column 27 covers a handle post that supports the steering handle 25 and the like.

As shown in FIG. 1, a spare seedling stand 28 on which a seedling tray 8 having seedlings 7 is placed is arranged on the side of the bonnet 26. The spare seedling stand 28 has a plurality of stages of seedling placement parts 28A, and is provided on the left side and the right side of the bonnet 26. The operator 2 can take out the seedling tray 8 from the preliminary seedling stand 28 and supply it to the planting machine 4 (seedling stand 9).
As shown in FIGS. 1 and 2, the traveling body 5 has a floor seat 29 arranged below the driver's seat 3. As shown in FIGS. The floor seat 29 has a front step 29a at the front on which the operator 2 seated in the driver's seat 3 puts his or her feet. The front step 29a is arranged in front of and below the driver's seat 3. A transmission case 20 is arranged below the front step 29a. Behind the front step 29a and below the driver's seat 3, a seat base cover 30 is provided that covers a portion 22A (see FIG. 4) of the support body 22 on which the driver's seat 3 is supported.

As shown in FIGS. 1 to 5, an empty tray receiving section 15 that can receive the empty seedling tray 8 sent out from the empty tray guide 14 is provided at the rear of the sheet base cover 30. The upper guide portion 14c is located above the empty tray receiving portion 15 and extends toward the empty tray receiving portion 15 side. The empty tray receiving part 15 is provided on the rear side of the driver's seat 3 and on the front side of the seedling table 9. In other words, the empty tray receiving section 15 is provided between the driver's seat 3 and the empty tray guide 14 (seedling platform 9). Thereby, the empty seedling tray 8 sent out from the empty tray guide 14 can be prevented from falling downward from between the driver's seat 3 and the empty tray guide 14 (seedling platform 9). Further, the empty tray receiving section 15 is provided above the front step 29a and below the driver's seat 3. Therefore, the empty tray receiving section 15 is provided at a height that allows it to satisfactorily receive the empty seedling tray 8 sent out from the empty tray guide 14. Moreover, since the upper guide part 14c is formed in a forward-downward slope and extends toward the empty tray receiving part 15, the empty seedling tray 8 can be sent out to the empty tray receiving part 15 in a good manner. Further, the rear end portion of the empty tray receiving portion 15 is located below the upper rear end portion of the empty tray guide 14. Specifically, the rear end portion of the empty tray receiving portion 15 and the rear end portion of the empty tray guide 14 overlap in plan view. Thereby, the empty seedling tray 8 sent out from the empty tray guide 14 can be prevented from falling downward from between the empty tray guide 14 and the empty tray receiving part 15, and the empty seedling tray 8 can be prevented from falling downward from between the empty tray guide 14 and the empty tray receiving part 15. It can be received by the tray receiving part 15.

As shown in FIGS. 3 and 5, the empty tray receiving part 15 includes an extending part (first receiving part) 32 at the rear of the floor sheet 29, and a plurality of rear steps (first receiving part) arranged at the rear of the extending part 32. It has a second receiving part) 33. The extending portion 32 is provided at a higher position than the front step 29a and is provided at the rear of the seat base cover 30. Specifically, it protrudes rearward from the rear lower end of the seat base cover 30. Further, the left portion of the extending portion 32 projects further to the left than the seat base cover 30, and the right portion thereof protrudes further to the right than the seat base cover 30. The left and right parts of the extension part 32 are connected to the front step 29a by an inclined part 29b. The inclined portion 29b extends in an inclined direction that moves upward as it goes rearward from the rear part of the front step 29a. The plurality of rear steps 33 are arranged behind the extension part 32 and at substantially the same height position as the extension part 32.

The plurality of rear steps 33 include a first rear step 33R and a second rear step 33L. The first rear step 33R is arranged at the rear of the right part of the extension part 32, and the second rear step 33L is arranged at the rear of the left part of the extension part 32. The first rear step 33R and the second rear step 33L are supported by the body 16 (body frame 21) via a frame member (referred to as a step frame) 34.

As shown in FIG. 3, the step frame 34 includes a first frame member 34A to a third frame member 34C. The first frame member 34A is disposed between the rear step 33 and the extension portion 32 and extends in the body width direction K2. The second frame member 34B has a lower portion fixed to the body frame 21 and a first frame member 34A fixed to the upper portion. The third frame member 34C projects rearward from the first frame member 34A. The third frame member 34C is disposed on the lower surface side of the rear step 33 and supports the rear step 33. Further, a plurality of third frame members 34C are provided, and are provided on the left and right portions of the first rear step 33R and the second rear step 33L, respectively.

The rear step 33 is arranged in front of the seedling platform 9. Therefore, the operator 2 can place his/her feet on the rear step 33 when supplying (replenishing) the seedling tray 8 to the seedling tray 9, and by placing his or her feet on the rear step 33, the operator 2 can easily replenish the seedling tray 8. can be done.
As shown in FIGS. 2 and 5, the planting work machine 4 of this embodiment has two (plural) seedling mounting stands 9, one of which is the seedling mounting stand 9 (the first seedling mounting stand 9R). ), and a second rear step 33L is arranged in front of the other seedling platform 9 (second seedling platform 9L).

Note that the first rear step 33R and the second rear step 33L may be formed continuously. Further, the rear step 33 may be formed of one member. Further, when there is one seedling mounting table 9, one rear step 33 is provided. Further, when there are three or more seedling stands 9, the number of rear steps 33 corresponding to the number of seedling stands 9 may be provided, or one rear step 33 common to each seedling stand 9 may be provided. One may be provided.

Next, the planting machine 4 will be explained in detail.
As shown in FIGS. 1 and 2, the planting machine 4 has a transplanting frame 36. As shown in FIG. 2, the transplant frame 36 includes a main frame 37 and a plurality of unit frames 38. The plurality of unit frames 38 include a first unit frame 38R and a second unit frame 38L.

As shown in FIGS. 8 to 10, the main frame 37 includes a first frame 39 to a twelfth frame 50. The first frame 39 is arranged at the front of the main frame 37. The first frame 39 includes a first support portion 39a on the right side, a second support portion 39b on the left side, and a connecting portion 39c that connects the upper portions of the first support portion 39a and the second support portion 39b. The first support portion 39a and the second support portion 39b are bent toward the front at a midway point in the vertical direction. Specifically, the first support portion 39a and the second support portion 39b have lower portions that are linear in the vertical direction, and upper portions that are sloped toward the front as they move upward. The lower portion of the second support portion 39b projects further downward than the lower end of the first support portion 39a.

The second frame 40 is disposed below the first support portion 39a and the second support portion 39b and extends in the body width direction K2. The lower end of the second support portion 39b is connected to the second frame 40. The right portion of the second frame 40 protrudes to the right beyond the first support portion 39a, and the left portion projects to the left beyond the second support portion 39b. The third frame 41 connects the lower part of the first support portion 39a and the second frame 40.

The fourth frame 42 protrudes rearward from a midway portion of the first frame 39 in the vertical direction. Specifically, the fourth frame 42 has a first portion 42a to a third portion 42c. The front portion of the first portion 42a is connected to a midway portion in the vertical direction of the first support portion 39a, and protrudes to the right from the first support portion 39a. The rear portion of the first portion 42a extends rearward from the outer end of the front portion of the first portion 42a. The front portion of the second portion 42b is connected to the lower part of the second support portion 39b and protrudes leftward from the second support portion 39b. The rear portion of the second portion 42b extends rearward from the front outer end of the second portion 42b. The third portion 42c connects the rear ends of the first portion 42a and the second portion 42b.

The fifth frame 43 has a horizontal front portion 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 it goes rearward from the middle part to the rear part, and the rear end part is connected to the third part 42c of the fourth frame 42.
The sixth frame 44 has a horizontal front portion 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 it goes rearward from the middle part to the rear part, and the rear end part is connected to the third part 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 front part (left part) of the first part 42a is connected to the part (right part) of the second part 42b on the inside part of the body.
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 a connecting piece 51R fixed to the middle part of the first part 42a in the longitudinal direction of the fuselage and a connecting piece 51L fixed to the middle part of the second part 42b in the longitudinal direction of the fuselage. There is.

The ninth frame 47 connects the lower part of the second support portion 39b and the third frame 41.
The tenth frame 48 is disposed approximately at the center of the main frame 37 in the body width direction K2, and connects the ninth frame 47 and the third portion 42c of the fourth frame 42.
The eleventh frame 49 and the twelfth frame 50 are arranged at the center of the front part of the main frame 37 in the machine width direction K2 with an interval in the machine 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-loaded stay 52R is provided at the top of the first support portion 39a, and a second spring-loaded stay 52L is provided at the top of the second support portion 39b.
A fixing plate 53 is provided at the upper part between the eleventh frame 49 and the twelfth frame 50. A rolling shaft 54 is attached to the fixed plate 53 so as to project forward. The rolling shaft 54 has a rolling axis X1 extending in the machine body longitudinal direction K1. The rolling shaft 54 is disposed approximately at the center 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 arranged on the rear side of the seventh frame 45. The first rail 56 is formed of a channel-shaped steel member and is open toward the rear. A plurality of stay members 55 are fixed to the upper surface of the first rail 56 at predetermined intervals in the body width direction K2. Each stay member 55 is bolted to the seventh frame 45.

A rail member (referred to as a second rail) 58 extending in the machine width direction K2 is arranged 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 stay members 57 are fixed to the second rail 58. Each stay 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 erected on the sixth frame 44 . A support bracket (referred to as a second support bracket) 60 is fixed to the front part of the fifth frame 43. The second support bracket 60 is erected on the fifth frame 43.

A plurality of connection plates 61 are provided at the rear of the main frame 37. The plurality of connection plates 61 include a first connection plate 61R and a second connection plate 61L. The first connection plate 61R is fixed to the right side of the third section 42c of the fourth frame 42, and the second connection plate 61 is fixed to the left side of the third section 42c.
As shown in FIG. 2, the first unit frame 38R is arranged on the right side of the main frame 37, and the second unit frame 38L is arranged on the left side of the main frame 37. Specifically, the first unit frame 38R and the second unit frame 38L are arranged between the first part 42a and the second part 42b of the fourth frame 42, and the first unit frame 38R is arranged between the first part 42a and the second part 42b. The second unit frame 38L is arranged on the left side between the first part 42a and the second part 42b. A first connection plate 61R is arranged behind the first unit frame 38R, and a second connection plate 61L is arranged behind the second unit frame 38L.

As shown in FIG. 1, the first unit frame 38R and the second unit frame 38L are each provided with a seedling retrieval device 11, a planting body 12, and a soil covering wheel (grounding roller) 62.
A plurality of seedling retrieval devices 11 are provided, and the plurality of seedling retrieval devices 11 include a first seedling retrieval device 11R provided on the first unit frame 38R and a second seedling retrieval device 11L provided on the second unit frame 38L. including.

A plurality of planting bodies 12 are provided, and the plurality of planting bodies 12 include a first planting body 12R provided on the first unit frame 38R and a second planting body 12L provided on the second unit frame 38L. including. The first planting body 12R constitutes a part of the first planting device 35R (see FIG. 28) that plants the seedlings 7 taken out by the first seedling taking out device 11R in the field 6. The second planting body 12L constitutes a part of the second planting device 35L (see FIG. 28) that plants the seedlings 7 taken out by the second seedling taking out device 11L in the field 6.

The soil covering ring 62 includes a first soil covering ring 62R provided on the first unit frame 38R and a second soil covering ring 62L provided on the second unit frame 38L. Two first soil covering rings 62R and two second soil covering rings 62L are provided. The two first soil covering rings 62R are arranged side by side in the body width direction K2. The two second soil covering rings 62L are also arranged side by side in the body width direction K2. The first soil-covering ring 62R is arranged behind the first planting body 12R, and rolls on the left and right sides of the seedlings 7 planted by the first planting body 12R to cover the soil near the plants of the seedlings 7 and to cover the seedlings 7 with soil. Suppress the stock market. The second soil-covering wheel 62L is arranged behind the second planting body 12L, and rolls on the left and right sides of the seedlings 7 planted by the second planting body 12L to cover the soil near the plants of the seedlings 7 and to cover the seedlings 7 with soil. Suppress the stock market.

As shown in FIG. 1, the first unit frame 38R, the first seedling retrieval device 11R, the first planting body 12R (first planting device 35R), and the first soil covering ring 62R constitute a first transplanting unit 63R. ing. The second unit frame 38L, the second seedling extraction device 11L, the second planting body 12L (second planting device 35L), and the second soil covering ring 62L constitute a second transplant unit 63L.
The number of transplant units may be one, or three or more. Moreover, the number of seedling mounting stands is also determined according to the number of transplant units.

As shown in FIGS. 11 and 12, the first unit frame 38R has a frame body 64 that is rectangular in plan view. The frame main body 64 connects a first side frame 65A and a second side frame 65B that are arranged facing each other with an interval in the width direction of the aircraft, and the front parts of the first side frame 65A and the second side frame 65B. A front frame 66 (referred to as a first front frame), a rear frame 67 that connects the front parts of the first side frame 65A and the second side frame 65B, and a first side frame disposed behind the first front frame 66. 65A and a second front frame 68 connected to the second side frame 65B. The first side frame 65A is arranged outside the second side frame 65B.

The second unit frame 38L also has a frame body 64 having the same configuration as the first unit frame 38R.
A first unit bracket 69 and a second unit bracket 70 are provided at the front of each frame body 64 and spaced apart in the body width direction K2. The first unit bracket 69 and the second unit bracket 70 have upper portions fixed to the first front frame 66 and the second front frame 68, and protrude downward from the frame body 64. The first unit bracket 69 is arranged on the outer side of the frame main body 64, and the second unit bracket 70 is arranged on the inner side of the frame main body 64.

As shown in FIG. 11, a driving main shaft 71 is disposed at the front of the first unit frame 38R (first transplant unit 63R) and second unit frame 38L (second transplant unit 63L), extending in the machine width direction K2. has been done. Further, the drive main shaft 71 is provided at the front part of the main frame 37 and extends in the width direction of the machine body.
The front portions of 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 body width direction K2. Specifically, the drive main shaft 71 has an axis extending in the body width direction K2, and is provided from the front part of the fifth frame 43 to the front part of the sixth frame 44. The drive main shaft 71 is rotatably supported on the left by the first support bracket 59 via a bearing 72, and rotatably supported on the right by the second support bracket 60 via a bearing 73. The first unit frame 38R and the second unit frame 38L are arranged above the drive main shaft 71. The drive main shaft 71 is inserted through the lower parts 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 provided in the first unit bracket 69 and the second unit bracket 70. It is rotatably supported by a bearing 74. Thereby, the front portions of 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 body width direction K2.

As shown in FIGS. 11 and 13, the first unit frame 38R has a first attachment plate 76R attached to the first connection plate 61R, and the second unit frame 38L has a first attachment plate 76R attached to the second connection plate 61L. 2 mounting plates 76L.
As shown in FIGS. 13 and 14, the first mounting plate 76R is attached to the rear frame 67 of the first unit frame 38R with bolts 77A and nuts 77B so that its position can be adjusted in the body width direction K2. The second mounting plate 76L is attached to the rear frame 67 of the second unit frame 38L with bolts 77A and nuts 77B so that its position can be adjusted in the body width direction K2. The first attachment plate 76R is attached to the first connection plate 61R with bolts 78A and nuts 78B so that its position can be adjusted in the body width direction K2. The second attachment plate 76L is attached to the second connection plate 61L with bolts 78A and nuts 78B so that its position can be adjusted in the body width direction K2. By changing the attachment position of the first attachment plate 76R relative to the first connection plate 61R in the machine width direction K2, the position of the first unit frame 38R can be adjusted in the machine body width direction K2 with respect to the main frame 37. By changing the attachment position of the second attachment plate 76L to the second connection plate 61L in the machine width direction K2, the position of the second unit frame 38L can be adjusted in the machine body width direction K2 with respect to the main frame 37. That is, the first transplant unit 63R and the second transplant unit 63L are supported by the main frame 37 so that their positions can be adjusted independently in the body width direction K2.

By adjusting the positions of the first unit frame 38R and the second unit frame 38L in the machine width direction K2, the distance between the first planting body 12R and the second planting body 12L in the machine body width direction K2 (first planting The row spacing W1 (see FIG. 11), which is the distance in the body width direction K2 between the seedlings 7 planted by the body 12R and the seedlings 7 planted by the second planting body 12L, can be adjusted.
As shown in FIG. 13, indicators 78 are provided on the first mounting plate 76R and the second mounting plate 76L. A row spacing display section 79 is provided on the first connecting plate 61R and the second connecting plate 61L. In the row spacing display section 79, numbers representing the row spacing W1 are written. By matching the index 78 with the number on the row spacing display section 79, the row spacing W1 can be easily adjusted.

As shown in FIGS. 11 and 12, the drive main shaft 71 has a power take-off part (referred to as a first power take-off part) 80 on the end side in the body width direction K2 for taking out power. The first power take-off portion 80 is provided on the left end side of the drive main shaft 71. The power transmitted from the first power extraction section 80 can drive the irrigation pump 82 arranged in front of the first power extraction section 80 . Further, the drive main shaft 71 has another power take-off part (referred to as a second power take-off part) different from the first power take-off part 80 on the end side (right end side) opposite to the first power take-off part 80. 81. The second power extraction section 81 can, for example, transmit power to various types of equipment optionally attached to the planting machine 4 to drive the various types of equipment. For example, splines (or key grooves, etc.) are formed in the first power take-off part 80 and the second power take-off part 81, and by spline-coupling (or key-coupling, etc.) the transmission members, the driving main shaft 71 can be Power can be extracted from the first power extraction section 80 and the second power extraction section 81.

As shown in FIG. 12, an input sprocket 83, which is an input member that inputs rotational power to the drive main shaft 71, is provided at the center of the drive main shaft 71 so as to be integrally rotatable therewith. The input sprocket 83 is supported by a bearing 84, and the bearing 84 is attached to a stay member 85 fixed to the tenth frame 48.
FIG. 15 shows a side view of the power input section 86 that inputs power to the drive main shaft 71, and FIG. 16 shows a partially developed plan view of the power input section 86.

As shown in FIGS. 15 and 16, the power input section 86 includes an input shaft 87, a gear transmission mechanism 88, and a wrap transmission mechanism 89 including an input sprocket 83.
As shown in FIG. 1, power is transmitted to the input shaft 87 from a PTO shaft (power takeoff shaft) that protrudes rearward from the mission case 20. Specifically, a first joint shaft 92 is operatively connected to the PTO shaft 90 via a planting clutch (clutch between plants) 91, and a second joint shaft 93 is operatively connected to the first joint shaft 92. The second joint shaft 93 is operatively connected to the input shaft 87. The planting clutch 91 transmits power output from the PTO shaft 90 to the input shaft 87 in an intermittent manner. When the planting clutch 91 is disconnected, the operations of the planting body 12, the seedling take-out device 11, etc. are stopped, and when it is connected, the operations of the planting body 12, the seedling take-out device 11, etc. are restarted. Therefore, by adjusting the disconnection time of the planting clutch 91, the seedlings 7 can be planted between predetermined distances.

As shown in FIGS. 15 and 16, the gear transmission mechanism 88 includes a first bevel gear 88A that is rotatably fitted to the input shaft 87 and a second bevel gear 88B that meshes with the first bevel gear 88A. The winding transmission mechanism 89 includes a first transmission sprocket 94 that can rotate 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 second transmission sprocket 95 to which power is transmitted from the second transmission sprocket 95. and a third transmission sprocket 96. Power is transmitted from the third transmission sprocket 96 to the input sprocket 83.

As shown in FIGS. 17 to 19, a plurality of irrigation pumps 82 are provided depending on the number of planting bodies 12. Therefore, when there is one planting body 12, one irrigation pump 82 is also provided. The plurality of irrigation pumps 82 are arranged vertically in front of the first power take-off section (power take-off section) 80 and further inside the body than the end of the main frame 37 in the body width direction K2. In this embodiment, the plurality of irrigation pumps 82 include a first irrigation pump 82R that supplies water to the first planting body 12R, and a second irrigation pump 82L that supplies water to the second planting body 12L. The irrigation pump 82 is formed by a reciprocating pump having a cylinder 97 and a piston 98 that reciprocates within the cylinder 97. The cylinder 97 has an axis in the vertical direction. Therefore, the piston 98 reciprocates in the vertical direction.

Power is transmitted to the irrigation pump 82 from the first power extraction section 80 by an irrigation transmission mechanism 99 . The irrigation transmission mechanism 99 includes a first irrigation sprocket 100, a second irrigation sprocket 101, a rotating member 102, and a connection link 103. The first irrigation sprocket 100 is attached to the first power take-off part 80 so as to be integrally rotatable therewith. The second irrigation sprocket 101 is arranged in front of the first irrigation sprocket 100, and power is transmitted from the first irrigation sprocket 100 via a chain 104.

A plurality of rotating members 102 are provided according to the number of irrigation pumps 82. The plurality of rotating members 102 include a first rotating member 102R corresponding to the first irrigation pump 82R and a second rotating member 102L corresponding to the second irrigation pump 82L. The first rotating member 102R and the second rotating member 102L rotate integrally with the second irrigation sprocket 101.
A plurality of connecting links 103 are provided according to the number of irrigation pumps 82. The plurality of connection links 103 are a first connection link 103R that connects the first rotation member 102R and the piston 98R of the first irrigation pump 82R, and a first connection link 103R that connects the second rotation member 102L and the piston 98L of the second irrigation pump 82L. and a second connecting link 103L.

The first connecting link 103R has one end connected to the first rotating member 102R at a position offset from the rotation axis X2, and the other end connected to the piston 98R of the first irrigation pump 82R. Specifically, a first connecting pin 106R is fixed to a mounting plate 105R attached to the first rotating member 102R at a position offset from the rotational axis X2 of the first rotating member 102R, and the first connecting pin 106R is fixed to a mounting plate 105R attached to the first rotating member 102R. A bearing 107R provided at one end of the link 103R is rotatably fitted. A bifurcated first connection tool 108R is provided at the other end of the first connection link 103R, and this first connection tool 108R pivots to a connection stay 109R provided at the lower part of the piston 98R of the first irrigation pump 82R. Supported. As the first rotating member 102R rotates, the piston 98R is pulled down and pushed up via the first connection link 103R, thereby driving the first irrigation pump 82R.

The second connecting link 103L has one end connected to the second rotating member 102L at a position offset from the rotation axis X2, and the other end connected to the piston 98L of the second irrigation pump 82L. Specifically, a second connecting pin 106L is fixed to a mounting plate 105L attached to the second rotating member 102L at a position offset from the rotation axis X2 of the second rotating member 102L, and a second connecting pin 106L is fixed to the second connecting pin 106L. A bearing 107L provided at one end of the link 103L is rotatably fitted. A bifurcated second connection tool 108L is provided at the other end of the second connection link 103L, and this second connection tool 108L pivots to a connection stay 109L provided at the lower part of the piston 98L of the second irrigation pump 82L. Supported. As the second rotating member 102L rotates, the piston 98L is pulled down and pushed up via the second connection link 103L, thereby driving the second irrigation pump 82L.

The irrigation pump 82 and irrigation transmission mechanism 99 are attached to a pump bracket 110 provided on the main frame 37. The pump bracket 110 has a first member 110A to a fifth member 110E. The first member 110A is attached to a first support bracket (support bracket) 59. The second member 110B is fixed to the upper part of the first member 110A. The third member 110C has a lower portion fixed to the front part of the second member 110B and projects upward from the second member 110B. The fourth member 110D is fixed to the upper part of the third member 110C. The fourth member 110D protrudes from the third member 110C to one side and the other side in the body width direction K2. The fifth member 110E is fixed to the lower part of the third member 110C. The fifth member 110E is formed into a cylindrical shape having an axis extending in the body width direction K2.

The irrigation pump 82 is disposed on the side of the third member 110C, and its upper portion is attached to the fourth member 110D. Specifically, the first irrigation pump 82R is arranged on the right side of the third member 110C, and the second irrigation pump 82L is arranged on the left side of the third member 110C. The upper pump head 111R of the first irrigation pump 82R is bolted to the fourth member 110D, and the upper pump head 111L of the second irrigation pump 82L is also bolted to the fourth member 110D.

The irrigation transmission mechanism 99 has an irrigation drive shaft 112 supported by the fifth member 110E so as to be rotatable about an axis extending in the body width direction K2. The second irrigation sprocket 101L and the rotating member 102 are attached to the irrigation drive shaft 112 so as to be able to rotate together. Specifically, the irrigation drive shaft 112 protrudes from the fifth member 110E to one side and the other side, and the first cylindrical member 113R is integrally rotated by spline connection or the like to the one side protrusion of the irrigation drive shaft 112. A second cylindrical member 113L is rotatably connected to the protruding portion on the other side of the irrigation drive shaft 112 by spline connection or the like. The first rotating member 102R is fixed to the first cylindrical member 113R, and the second irrigation sprocket 101 and the second rotating member 102L are fixed to the second cylindrical member 113L.

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

As shown in FIGS. 1 and 2, an irrigation tank T for storing water for watering the seedlings 7 is arranged at the front of the running body 5. A plurality of irrigation tanks T are provided. The plurality of irrigation tanks T include a first irrigation tank T1 and a second irrigation tank T2 arranged on the right side of the hood 26, and a third irrigation tank T3 and a fourth irrigation tank T4 arranged on the left side of the bonnet 26. including. The second irrigation tank T2 is arranged outside the first irrigation tank T1 and below the first irrigation tank T1. The first irrigation tank T1 and the second irrigation tank T2 are supported by the body 16 via a first tank bracket 116. The fourth irrigation tank T4 is arranged outside the third irrigation tank T3 and below the third irrigation tank T3. Further, the third irrigation tank T3 and the fourth irrigation tank T4 are supported by the body 16 via a second tank bracket 117.

As shown in FIG. 2, the first irrigation tank T1 and the second irrigation tank T2 are connected to the suction part 114 of the first irrigation pump 82R via a suction hose 119R. The third irrigation tank T3 and the fourth irrigation tank T4 are connected to the suction portion 114 of the second irrigation pump 82L via a suction hose 119L.
As shown in FIG. 20, a first irrigation pipe 120R (irrigation pipe 120) is arranged on the upper side of the first planting body 12R. A second irrigation pipe 120L (irrigation pipe 120) is arranged on the upper side of the second planting body 12L. The discharge section 115 of the first irrigation pump 82R is connected to the first irrigation pipe 120R via a discharge hose 122R, and the discharge section 115 of the second irrigation pump 82L is connected to the second irrigation pipe 120L via a discharge hose 122L. has been done. Therefore, water discharged from the first irrigation pump 82R is supplied to the first planting body 12R, and water discharged from the second irrigation pump 82L is supplied to the second planting body 12L.

The first irrigation pipe 120R is attached to a support plate 121R (support plate 121) that supports the first planting body 12R, and the second irrigation pipe 120L is attached to a support plate 121L (support plate 121) that supports the second planting body 12L. 121).
As shown in FIGS. 1 and 21, the main frame 37 (planting work machine 4) is mounted on the traveling body 5 via a work machine mounting device 123. The work machine mounting device 123 includes a mounting frame 124 to which the main frame 37 (planting work machine 4) is detachably mounted, and a work machine lifting mechanism 125 that raises and lowers the main frame 37 (planting work machine 4).

As shown in FIG. 21, the mounting frame 124 has a bearing body 128 that supports the rolling shaft 54 rotatably around the rolling axis X1. The main frame 37 is swingable about the rolling axis X1 with respect to the mounting frame 124. The first planting body 12R and the second planting body 12L are arranged side by side in the body width direction K2 with the rolling axis X1 in between.
The working 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 drives the planting working machine 4 up and down.

The connecting link mechanism 129 is configured of parallel links and includes an upper link 129A and a lower link 129B disposed below the upper link 129A. The front part of the upper link 129A is rotatably connected to the rear part of the body 16 (body frame 21) about an axis in the body width direction K2. The rear part of the upper link 129A is rotatably connected to the mounting frame 124 about an axis in the body width direction K2. The front part of the lower link 129B is rotatably connected to the rear part of the body 16 (body frame 21) about an axis in the body width direction K2. The rear part of the lower link 129B is rotatably connected to the mounting frame 124 about an axis in the body width direction K2. The connecting link mechanism 129 allows the planting machine 4 to move up and down in parallel.

The elevating and lowering driving body 130 is, for example, an elevating and lowering cylinder configured by a hydraulic cylinder. One end side (bottom side of the cylinder body 130A) of the lifting cylinder 130 is rotatably connected to the rear part of the body 16 (body frame 21) about an axis in the body width direction K2. The other end of the lifting cylinder 130 (the connecting body 130C attached to the tip end of the piston rod 130B) is rotatably connected to the mounting frame 124 about an axis in the body width direction K2. One end of the lifting cylinder 130 is pivotally supported concentrically with the front part of the upper link 129A, and the other end is pivotally supported concentrically with the rear part of the lower link 129B.

As shown in FIG. 21, the transplanter 1 includes a control valve 132 that controls the lifting cylinder 130. Control valve 132 is controlled by control device 131 . The control valve 132 is formed by an electromagnetic valve, and is configured, for example, as a three-position directional switching valve that can be switched between a neutral position, a raised position, and a lowered position. The control valve 132 is connected to the control device 131 by electrical wiring or the like, and is also connected to the cylinder body 130A of the lifting cylinder 130, the hydraulic pump 133, and the hydraulic oil tank 134 via a hydraulic pipe line. When a lift command signal is sent from the control device 131 to the control valve 132, the control valve 132 is switched to the lift position, hydraulic oil from the hydraulic pump 133 is supplied to the bottom side of the cylinder body 130A, and the lift cylinder 130 is extended. Then, the main frame (planting work machine 4) rises. Furthermore, when a descending command signal is sent from the control device 131 to the control valve 132, the control valve 132 is switched to the descending position, hydraulic oil is supplied to the rod side of the cylinder body 130A, and the elevating cylinder 130 contracts to contract the main cylinder. Frame 37 is lowered.

Note that the lifting drive body 130 may be configured with an electric cylinder (electric actuator) or an electric hydraulic cylinder (electro-hydraulic actuator). The electric cylinder is an electrically driven cylinder, and is, for example, an actuator that moves a ball screw nut by rotating a ball screw around its axis using an electric motor, and moves a rod forward and backward by the movement of the ball screw nut. An electric hydraulic cylinder is an actuator that integrates, for example, an electric motor, an oil tank, a hydraulic pump, a valve, a hydraulic cylinder, etc. When the electric motor rotates, the hydraulic pump rotates and the valves are switched to operate the hydraulic cylinder. It is an actuator.

As shown in FIG. 22, the transplanter 1 includes a rolling mechanism 135 that swings the planting machine 4 around the rolling axis X1. The rolling mechanism 135 includes a rolling motor 136, a rolling roller 137, and a cable body 138. The rolling motor 136 and the rolling roller 137 are provided on the mounting frame 124 (work machine mounting device 123). The rolling motor 136 and the rolling roller 137 are arranged above the rolling shaft 54 and at a position corresponding to the center of the main frame 37 in the body width direction K2. Rolling roller 137 is arranged above rolling motor 136. The rolling motor 136 is composed of an electric motor that can rotate forward and backward. Further, the rolling motor 136 is connected to the control device 131. Control device 131 controls rolling mechanism 135.

As shown in FIGS. 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 mechanism 139 includes a first gear 139A that is rotationally driven by the power of the rolling motor 136, and a second gear 139B that meshes with the first gear 139A. The second gear 139B has a larger diameter than the first gear 139A and rotates integrally with the rolling roller 137. Therefore, the rolling roller 137 is rotated in forward and reverse directions by the power of the rolling motor 136.

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

When the rolling motor 136 rotates the rolling roller 137 in one direction, for example, clockwise in FIG. 22, the left side of the cable 138 is pulled. Thereby, the main frame 37 (planting work machine 4) swings in the clockwise direction in FIG. 22 around the rolling axis X1. Further, when the rolling motor 136 rotates the rolling roller 137 in the forward and reverse directions (counterclockwise direction in FIG. 22), the right side of the cable body 138 is pulled. Thereby, the main frame 37 (planting work machine 4) swings in the counterclockwise direction in FIG. 22 around the rolling axis X1.

Moreover, the main frame 37 (planting work machine 4) can freely swing around the rolling axis X1.
As shown in FIG. 23, the mounting frame 124 is provided with a detection sensor 141 that detects a large swing of the planting machine 4 about the rolling axis X1. The detection sensor 141 includes a first limit switch 141R that detects clockwise rocking of the planting machine 4 and a second limit switch 141L that detects counterclockwise rocking of the planting machine 4. include. One of the many teeth of the second gear 139B is a detection tooth 142 that protrudes more outward in the radial direction of the gear than the other teeth, and this detection tooth 142 is used as the first limit switch 141R or the second limit switch. By contacting the contact of the switch 141L, a large swing of the planting machine 4 about the rolling axis X1 is detected. When the first limit switch 141R or the second limit switch 141L detects the detection tooth 142, for example, driving of the rolling motor 136 is stopped.

As shown in FIG. 2, the planting work machine 4 has a first sensing roller 126R (sensing roller 126) placed in front of the first planting body 12R, and a first sensing roller 126R (sensing roller 126) placed in front of the second planting body 12L. It has a second sensing roller 126L (sensing roller 126). The first sensing roller 126R is provided on the first unit frame 38R. That is, the first transplant unit 63R includes a first sensing roller 126R. The second sensing roller 126L is provided on the second unit frame 38L. That is, the second transplant unit 63L includes a second sensing roller 126L.

As shown in FIG. 22, the first sensing roller 126R is a member for detecting the height of the first planting surface 144R, which is the planting surface of the field 6 corresponding to the first planting body 12R. In other words, the first sensing roller 126R is a member for detecting the height of the first ridge 143R in which the seedling 7 is planted by the first planting body 12R.
The second sensing roller 126L is a member for detecting the height of the second planting surface 144L, which is the planting surface of the field 6 corresponding to the second planting body 12L. In other words, the second sensing roller 126L is a member for detecting the height of the second ridge 143L in which the seedlings 7 are planted with the second planting body 12L.

The first sensing roller 126R rolls on the first planting surface 144R and moves up and down following the height change of the first planting surface 144R. The second sensing roller 126L rolls on the second planting surface 144L and moves up and down following the height change of the second planting surface 144L.
As shown in FIG. 25, the first sensing roller 126R is supported by the first unit frame 38R so as to be vertically swingable by the first roller support mechanism 145R. The second sensing roller 126L is supported by a second roller support mechanism 145L on the second unit frame 38L so as to be able to swing up and down.

The first roller support mechanism 145R includes a first roller bracket 146R that supports the first sensing roller 126R in a vertically swingable manner, and a first roller bracket 146R that urges the first roller bracket 146R downward to move the first sensing roller 126R to the field (ground). ) and a first biasing spring (spring) 147R. The first roller bracket 146R includes a first arm 148A, a second arm 148B, and a connecting member 148C. The first arm 148A is arranged on the outer side of the first sensing roller 126R, and the second arm 148B is arranged on the inner side of the first sensing roller 126R. The first arm 148A and the second arm 148B protrude forward from the first sensing roller 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 FIGS. 25 and 27, a support bracket 149 is provided on the first unit frame 38R. The support bracket 149 includes a fixing plate 149A provided across 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 arranged 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 roller 126R in the body width direction K2. Furthermore, 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 parts of the first arm 148A and the second arm 148B are pivotally supported by the first side plate part 149a and the second side plate part 149b by a pivot 150. A first sensing roller 126R is rotatably supported at the rear of the first arm 148A and the second arm 148B by a roller shaft 151 having an axis extending in the machine width direction K2.

As shown in FIGS. 25 and 26, the first biasing spring 147R is formed of a compression coil spring and is fitted on the outside of the rod member 152. The lower part of the rod member 152 is pivotally supported by a rod support shaft 153 fixed to the second arm 148B. The upper part of the rod 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 rod member 152. The first biasing spring 147R is compressed and interposed between the spring receiving plate 155 attached to the rod 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 in a vertically swingable manner, and urges the second roller bracket 146L downward to move the second sensing roller 126L to the field (ground). ) and a second biasing spring (spring) 147L. The second roller bracket 146L is configured similarly to the first roller bracket 146R. The second roller bracket 146L is supported by the second unit frame 38L by a support bracket 149, and rotatably supports the second sensing roller 126L by a roller shaft 151. The second biasing spring 147L is formed of a compression coil spring, and is fitted into the rod member 152 on the second unit frame 38L side. The rod member 152 is pivotally supported by the second roller bracket 146L and 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 planting surface 144R is determined by the amount of rocking of the first roller bracket 146R (the amount of change in the vertical position of the first sensing roller 126R) by the first sensor mechanism 156R. The height (height change) of the second planting surface 144L is determined by the amount of rocking of the second roller bracket 146L (the amount of change in the vertical position of the second sensing roller 126L) by the second sensor mechanism 156L.

As shown in FIGS. 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 of a potentiometer. The first height detection sensor 157R is attached 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 body 160 and an abutment 161. The arm body 160 has a front portion connected to a rotation detector of the first height detection sensor 157R, and is rotatable together with the rotation detector. The contact element 161 is fixed to the rear part of the arm body 160. The abutting element 161 is formed by a pin and abuts on the second arm 148B of the first roller bracket 146R. The arm body 160 can swing up and down concentrically with the first roller bracket 146R, and when the first detection arm 159R swings up and down together with the first roller bracket 146R, the first height detection sensor 157R The amount of rocking of the roller bracket 146R is detected. Thereby, the height (height change) of the first planting surface 144R can be detected.

The second sensor mechanism 156L includes a second height detection sensor 157L and a second detection arm 159L. The second height detection sensor 157L is also formed of a potentiometer. The second height detection sensor 157L is attached 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 body 160 and an abutment 161. The arm main body 160 has a front portion connected to a rotation detector of the second height detection sensor 157L, and is rotatable together with the rotation detector. The abutting element 161 is fixed to the rear part of the arm body 160. The abutting element 161 is formed by a pin and abuts on 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 when the second detection arm 159L swings up and down together with the second roller bracket 146L, the second height detection sensor 157L The amount of rocking of the roller bracket 146L is detected. Thereby, the height (change in height) of the second planting surface 144L can be detected.

As shown in FIGS. 25 and 26, the first roller support mechanism 145R is provided with a scraper 162 for removing mud from the first sensing roller 126R. The scraper 162 is attached to a scraper bracket 163. The scraper bracket 163 is provided so as to straddle 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 that similarly removes dirt from 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 transmit detection values to the control device 131. The control device 131 acquires the detection values detected by the first height detection sensor 157R and the second height detection sensor 157L.
If there is a difference in height between the first planting surface 144R and the second planting surface 144L, the planting depth of the seedlings 7 to be planted with the first planting body 12R and the planting depth of the seedlings 7 to be planted with the second planting body 12L may be different. The depth will be different. Therefore, if a difference in height occurs between the first planting surface 144R and the second planting surface 144L, the first In order to make the height H1 and the second height H2, which is the height of the second planting body 12L with respect to the second planting surface 144L (planting surface), to a predetermined height, the planting work machine 4 is rotated on a rolling axis. Swing around center X1. Specifically, the control device 131 calculates the difference in height between the first height H1 and the second height H2 based on the detection values detected by the first sensing roller 126R and the second sensing roller 126L, The planting machine 4 is swung around the rolling axis X1 in a direction that reduces this height difference. In other words, the control device 131 calculates the difference in height between the first sensing roller 126R and the second sensing roller 126L based on the detection values detected by the first sensing roller 126R and the second sensing roller 126L, The planting machine 4 is swung around the rolling axis X1 in a direction that reduces the difference in height between the first sensing roller 126R and the second sensing roller 126L.

More specifically, when the second planting surface 144L is higher than the first planting surface 144R, a difference in height occurs between the first sensing roller 126R and the second sensing roller 126L. In this case, the control device 131 swings the planting machine 4 around the rolling axis X1 so that the left side rises and the right side falls. Thereby, basically, the planting depth of the seedlings 7 to be planted by the first planting body 12R and the planting depth of the seedlings 7 to be planted by the second planting body 12L are made to be the same depth. Note that if a height difference is set in advance between the first height H1 and the second height H2 by the angle adjustment unit 194 described later, the planting operation is performed so as to return to the set height. The machine 4 is swung around the rolling axis X1.

Further, the control device 131 raises and lowers the planting machine 4 based on the unevenness of the planting surface (field 6) detected by one of the first sensing roller 126R and the second sensing roller 126L, and The difference in height between the first sensing roller 126R and the second sensing roller 126L is calculated using one sensing roller as a reference.
In this embodiment, the first sensing roller 126R detects the unevenness of the first planting surface 144R, and the planting work machine 4 is raised and lowered in accordance with the unevenness of the first planting surface 144R. The seedlings 7 are planted at the same depth (in the longitudinal direction of the ridge). Specifically, when the planting surface becomes high, the planting machine 4 is raised, and when the planting surface becomes low, the planting machine 4 is lowered. Furthermore, a height difference is calculated based on the height of the second sensing roller 126L with respect to the first sensing roller 126R, with the first sensing roller 126R as a reference. By calculating the difference in height between the first sensing roller 126R and the second sensing roller 126L based on one of the first sensing roller 126R and the second sensing roller 126L, the planting machine 4 is rolled. Rolling control for rocking around the axis X1 can be performed stably.

Incidentally, the second sensing roller 126L detects the unevenness of the second planting surface 144L, and the planting work machine 4 is raised and lowered, and the first sensing roller 126R and the second sensing roller 126L are adjusted based on the second sensing roller 126L. The difference in height may also be calculated.
Further, in this embodiment, if the difference in height between the first sensing roller 126R and the second sensing roller 126L is less than a predetermined value, the rolling control by the control device 131 is not performed, and the rolling axis of the planting work machine 4 is The height difference is absorbed by free swinging around the center X1. The control device 131 operates the rolling mechanism 135 to perform rolling control when the difference in height between the first planting surface 144R and the second planting surface 144L becomes a predetermined value or more.

As shown in FIG. 28, each of the first unit frame 38R and the second unit frame 38L is provided with a swing frame 164 that can swing up and down. 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 (transplant frame 36).

The swing frame 164 provided on the first unit frame 38R is called a first swing frame 164R, and the swing frame 164 provided on the second unit frame 38L is called a second swing frame 164L. Since the first swing frame 164R and the second swing frame 164L are bilaterally symmetrical and formed with the same structure, the first swing frame 164R and the second swing frame 164L will be described together.

As shown in FIGS. 28 and 29, the swing frame 164 includes a first side frame portion 164A on the outside of the body, a second side frame portion 164B on the inside of the body, and a first side frame portion 164A and a second side frame portion 164B on the inside side of the body. An intermediate frame portion 164C that connects the front and rear intermediate portions of the second side frame portion 164B, a rear frame portion 164D that connects the rear portions of the first side frame portion 164A and the second side frame portion 164B, and the first side frame portion 164A. It has a first support part 164E fixed to the front part of the second side frame part 164B by bolts, welding, etc., and a second support part 164F fixed to the front part of the second side frame part 164B by bolts, welding, etc.

The first support part 164E is rotatably supported by the first unit bracket 69 around a horizontal axis (an axis extending in the width direction of the aircraft body), and the second support part 164F is supported by the second unit bracket 70 so as to be rotatable around the horizontal axis. Rotatably supported. Therefore, the rear portion of the swing frame 164 can swing up and down. Specifically, a planting drive shaft 165 is rotatably supported around a horizontal axis across the first unit bracket 69 and the second unit bracket 70, and the planting drive shaft 165 has a first support portion 164E and a second support portion 164F. is rotatably supported. A transmission gear 166 is provided on the planting drive shaft 165 so as to be integrally rotatable therein, and rotational power is transmitted from the drive main shaft 71 to this transmission gear 166, so that the planting drive shaft 165 rotates.

As shown in FIGS. 28 and 29, the first swinging frame 164R is provided with a first planting lifting mechanism 167R (planting lifting mechanism 167). The body 12R is provided so as to be able to reciprocate up and down. The second swinging frame 164L is provided with a second planting lifting mechanism 167L (planting lifting mechanism 167), and the second planting body 12L is provided in the second planting lifting mechanism 167L so as to be able to reciprocate up and down. It is being The first planting body 12R and the first planting lifting mechanism 167R constitute the first planting device 35R (planting device 35), and the second planting body 12L and the second planting lifting mechanism 167L constitute the second planting device 35R (planting device 35). This constitutes a planting device 35L (planting device 35).

The first soil covering ring 62R is supported by a first swinging frame 164R and a first roller frame (roller frame 168) 168R so as to be swingable up and down. The second soil covering ring 62L is supported by the swing frame 164 and the second roller frame 168L (roller frame 168) so as to be able to swing up and down.
Since the first roller frame 168R and the second roller frame 168L are formed with the same structure, the first roller frame 168R and the second roller frame 168L will be described together.

As shown in FIGS. 29 and 30, the roller frame 168 is formed of a pipe material or the like, and includes a first side rod portion 168A on the outside of the body, a second side rod portion 168B on the inside of the body, and a rear side rod portion 168A on the outside of the body. It has a rear rod portion 168C. The first side rod portion 168A has a first portion 168a extending in the longitudinal direction of the fuselage, 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 connected around a horizontal axis to a bracket member 169 that projects downward from the first side frame 65A. The second side rod portion 168B has a first portion 168c extending in the longitudinal direction of the fuselage, 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 connected around a horizontal axis to a bracket member 170 that projects downward from the second side frame 65B. The rear rod portion 168C connects the rear portions of the first side rod portion 168A and the second side rod portion 168B. Specifically, the upper ends of the second portion 168b and the second portion 168d are connected to each other. The soil covering ring 62 is attached to the rear part of the first part 168a and the rear part of the first part 168c via stay members 171.

A first planting depth adjustment mechanism 172R (planting depth adjustment mechanism 172) is provided across the first swing frame 164R and the first roller frame 168R, and is provided across the second swing frame 164L and the second roller frame 168L. A second planting depth adjustment mechanism 172L (planting depth adjustment mechanism 172) is provided. Since the first planting depth adjustment mechanism 172R and the second planting depth adjustment mechanism 172L are formed with the same structure, the first planting depth adjustment mechanism 172R and the second planting depth adjustment mechanism 172L will be explained together.

The planting depth adjustment mechanism 172 is a mechanism that adjusts the planting depth of the seedlings 7 by fixing the distance between the roller frame 168 and the swinging frame 164 so as to be changeable, and changing the distance.
As shown in FIGS. 29 and 30, the planting depth adjustment mechanism 172 includes a mechanism frame 173, an adjustment motor 174, a drive 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 by an electric motor and is connected to the control device 131. Adjustment motor 174 is attached to mechanism frame 173. Specifically, the adjustment motor 174 is attached to the upper part of the mechanism frame 173. The drive mechanism 175 is driven by the adjustment motor 174. Specifically, the drive mechanism 175 includes a first gear 177 driven by an adjustment motor 174 and a second gear 178 that meshes with the first gear 177 and rotates. The link member 176 connects the drive mechanism 175 and the roller frame 168 and moves up and down in conjunction with the drive of the drive mechanism 175.

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

In the planting depth adjustment mechanism 172 described above, the second gear 178 swings around the pivot portion 180 by rotating the first gear 177 by the adjustment motor 174. When the second gear 178 swings, the connecting portion 178b moves up and down, causing the link member 176 to move up and down. When the link member 176 moves up and down, the swing frame 164 swings up and down with respect to the roller frame 168. As a result, the distance between the roller frame 168 and the swing frame 164 changes, and the height of the planting body 12 with respect to the soil covering wheel 62 changes. If the height of the planting body 12 with respect to the soil covering ring 62 is changed, the height of the planting body 12 with respect to the planting surface is changed, so that the planting depth can be changed. Moreover, by stopping the drive of the adjustment motor 174, the distance between the roller frame 168 and the swing frame 164 is fixed, and the set planting depth can be maintained.

The swing frame 164 swings up and down as the soil covering ring 62 follows the unevenness of the field 6. The swing frame 164 is set to be located at the center of the allowable swing range. When the planting depth is changed, the swing frame 164 swings up and down with respect to the transplant frame 36, so the relative position in the vertical direction with respect to the transplant frame 36 changes. Therefore, when the distance between the roller frame 168 and the swing frame 164 is changed, the control device 131 adjusts the relative position of the swing frame 164 with respect to the transplant frame 36 in accordance with the change in the distance between the roller frame 168 and the swing frame 164. The main frame 37 (transplant frame 36) is raised and lowered in the returning direction.

The planting depth adjustment mechanism 172 includes a detection section 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 distance between the roller frame 168 and the swing frame 164 to the control device 131. The detection unit 182 is composed of, for example, a potentiometer. A rotation detector of the detection unit 182 is connected to a pivot shaft 181 that pivotally supports the second gear 178. The pivot shaft 181 rotates together with the second gear 178. Therefore, the detection unit 182 detects the amount of rotation of the second gear 178.

FIG. 31 shows a covering pressure adjustment mechanism 183 that adjusts the covering pressure of the covering ring 62 (the force with which the covering ring 62 presses against the ground). The soil covering pressure adjustment mechanism 183 includes a support plate 185, an operating lever 184, a spring hanging arm 186, a first fixing bracket 187A, a second fixing bracket 187B, an interlocking link 188, and an adjustment spring 189.
The support plate 185 is fixed to the rear part of the unit frame 38. The operating lever 184 is swingably attached to the support plate 185 by a pivot 185A. The spring-loaded arm 186 is fixed to the operating lever 184 with a bolt and swings together with the operating lever 184. The first fixed bracket 187A is fixed to the swing frame 164. The second fixing bracket 187B is fixed to the unit frame 38. The interlocking link 188 includes a first link 188A pivotally supported by a first fixed bracket 187A and a second link 188B pivotally supported by a second fixed bracket 187B. The first link 188A and the second link 188B are pivotally connected. The adjustment spring 189 is formed by a tension coil spring, and has one end hooked into a locking hole 186a formed at the end of the spring hanging arm 186, and the other end hooked into a locking hole 188a formed at the first link 188A. ing.

In the soil covering pressure adjustment mechanism 183, the soil covering pressure can be adjusted by swinging the operation lever 184 around the pivot shaft 185A and changing the spring force of the adjustment spring 189. A plurality of locking portions 185a are provided on the upper part of the support plate 185, and by locking the locking piece 184a of the operating lever 184 to the locking portions 185a, the operating lever 184 is fixed at a plurality of positions. be able to.

As shown in FIG. 32, the planting depth adjustment mechanism 172 is operated by the operating section 127. As shown in FIGS. 1 and 2, the operating section 127 is provided near the driver's seat 3. Specifically, the operating portion 127 is provided on the upper part of the steering column 27 in front of the driver's seat 3 in an inclined shape that moves upward as it goes forward. Further, the operating section 127 is arranged below the steering handle 25. Further, the operation unit 127 can be operated by an operator seated in the driver's seat 3. As shown in FIGS. 21 and 30, the operation unit 127 is connected to a control device 131.

As shown in FIG. 32, the operation unit 127 sends an operation signal for operating the planting depth adjustment mechanism 172 to the control device 131. Further, the operation section 127 includes a planting depth adjustment section 190 that operates the planting depth adjustment mechanism 172. The planting depth adjustment section 190 is provided at the rear (lower part) of the operation section 127. The planting depth adjustment section 190 includes an operation dial (rotary operation member) 191 and an indicator 192 that indicates the rotational position of the operation dial 191. The indicator 192 is provided on the top surface of the operation dial 191. The planting depth adjustment mechanism 172 (adjust motor 174) is operated by rotating the operation dial 191 to the left or right. The planting depth adjustment section 190 has a depth display section 193 that indicates the direction in which the operation dial 191 is operated. The depth display section 193 has the word "deep" provided on the right side of the operation dial 191 and the word "shallow" provided on the left side of the operation dial 191.

In the planting depth adjustment section 190 described above, 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. Upon acquiring the first operation signal S1, the control device 131 operates the planting depth adjustment section 190 in a direction to increase the planting depth. The reference planting depth is set with the indicator 192 facing forward (upward) as shown in FIG. From depth to depth. Further, when the operation dial 191 is turned to the left, a second operation signal S2 is sent from the operation section 127 to the control device 131. Upon acquiring the second operation signal S2, the control device 131 operates the planting depth adjustment section 190 in a direction to decrease the planting depth. The more the operation dial 191 is turned to the left from the state where the index 192 faces forward, the shallower the planting depth becomes from the standard depth. Note that turning the operation dial 191 to the right may deepen the planting depth, and turning the operation dial 191 to the left may make the planting depth shallow.

The operation dial 191 can be operated in stages, and the planting depth can be adjusted in stages. The planting depth may be continuously adjustable by making the operation dial 191 continuously operable.
Since the operator 2 can operate the planting depth adjustment mechanism 172 while sitting in the driver's seat 3 using the planting depth adjustment section 190, the planting depth of the seedlings 7 can be easily adjusted.

The operation section 127 has an angle adjustment section 194. The angle adjustment unit 194 performs an operation of lowering one side of the planting machine 4 in the body width direction K2 around the rolling axis X1 or lowering the other side. By lowering one side of the planting machine 4 in the body width direction K2, the planting body 12 on this one side is lowered, and by lowering the other side of the machine body width direction K2 of the planting machine 4, the other side is lowered. The planting body 12 is lowered. This allows fine adjustment of the planting depth.

For example, even if the first planting surface 144R and the second planting surface 144L are at the same height, the planting depth of the seedlings 7 to be planted with the first planting body 12R and the seedlings 7 to be planted with the second planting body 12L may be different. The planting depth may vary slightly. At such times, the planting depth is finely adjusted, for example, by lowering the planting body 12 with a shallower planting depth. Rolling control is performed with this adjustment made.

As shown in FIG. 32, the angle adjustment section 194 is provided at the front (upper part) of the operation section 127, and has a first switch 195 and a second switch 196 arranged side by side in the machine width direction K2. . The first switch 195 sends a first lowering signal to the control device 131 to lower one side (first planting body arrangement side) of the planting work machine 4 around the rolling axis X1. In other words, the first switch 195 sends the first lowering signal S3 to the control device 131 to lower the first planting body arrangement side of the planting work machine 4 around the rolling axis X1. Upon acquiring the first lowering signal S3, the control device 131 lowers the right side of the planting machine 4.

The second switch 196 sends a second lowering signal S4 to the control device 131 to lower the other side (second planting body arrangement side) of the planting machine 4 in the body width direction K2 around the rolling axis X1. Upon acquiring the second lowering signal S4, the control device 131 lowers the left side of the planting machine 4.
For example, each time the first switch 195 or the second switch 196 is pressed, the planting machine 4 rotates by a predetermined angle around the rolling axis X1, and the planting depth is set in a predetermined dimensional unit (several millimeters or centimeters). can be finely adjusted. Note that it is not limited to this.

Further, the operation section 127 includes a transplant section height adjustment section 197. The transplanting section height adjusting section 197 is disposed in the middle of the operating section 127 (between the angle adjusting section 194 and the planting depth adjusting section 190), and includes an up switch 198 and a down switch 199. The lower switch 199 is disposed to the right and rearward (lower) of the upper switch 198.
The transplanting part height adjusting part 197 corrects the difference in the amount of sinking between the sensing roller 126 and the soil covering wheel 62. It is also used to correct deviations in mechanical and electrical initial values. The aim is to prevent the swing frame 164 from shifting significantly above or below the swing range.

This will be explained in detail below. Moreover, the numerical values described in the following explanation are illustrative and not limiting.
The planting body 12 and the soil-covering wheel 62 are attached to a swinging frame 164 that swings up and down about the front part (planting drive shaft 165) as a fulcrum, and the soil-covering wheel (in contact with the ground) is attached to the swinging frame 164. 62, for example, by 1 cm, the swinging frame 164 is lowered, the planting body 12 goes deeper into the ground by about 1 cm, and the planting depth becomes about 1 cm deeper.

The swinging frame 164 has a swinging range of approximately 4 cm at the soil covering ring 62, and if the covering soil ring 62 is at the center of the swinging range, the planting depth can be maintained constant even if the unevenness of the ridge is ±2 cm. can.
However, if the height of the transplanting frame 36 (the height of the rotation fulcrum (planting drive shaft 165) of the swing frame 164) is the same, if the soil covering ring 62 is raised by 1 cm, the swing frame 164 will move within the swing range. It shifts downward and the applicable range for ridge unevenness is -1cm to +3cm. Therefore, when increasing the planting depth by 1 cm, the soil covering ring 62 is raised by 1 cm and the transplant frame 36 is lowered by 1 cm so that the swing frame 164 is at the center of the swing range.

The planting depth adjustment range is -2 cm to +5 cm, and 0 means that the upper surface of the root ball (bed soil of seedling 7) and the upper surface of the ridge are on the same level. This does not necessarily mean that 0 will be on the same level, but it means that there is more adjustment allowance on the deeper planting side.
By the way, the ground contact height of the sensing roller 126 and the ground contact height of the soil cover ring 62 are not the same. That is, the soil covering ring 62 has a higher pressing load than the sensing roller 126, so the soil covering ring 62 sinks, and the soil covering ring 62 becomes lower than the sensing roller 126. In terms of design, the soil covering ring 62 is expected to be 1 cm lower, but the difference in the amount of sinking will vary depending on the adjustment of the suppressing load of the soil covering ring 62, the hardness of the top surface of the ridge, the presence or absence of mulch film, etc. In order to correct this difference in the amount of sinking, a transplant portion height adjustment section 197 is provided.

When the lowering switch 198 is pressed, the transplant section height adjustment section 197 sends a correction value (first correction value S5) to the control device 131, and the control device 131 lowers the transplant frame 36 based on the correction value. Specifically, normally, the difference in the contact surfaces between the sensing roller 126 and the soil covering ring 62 is 1 cm, but the ridges are soft and the soil covering ring 62 sinks greatly (the swing frame 164 is below the swinging range). For example, if the difference in the ground plane is 1.5 cm, press the lowering switch 199 (“lower”) to lower the transplant frame 36 by 0.5 cm (lower the sensing roller). 0.5 cm) and correct it so that the swing frame 164 is at the center of the swing range.

Further, when the raise switch 198 is pressed, the transplant portion height adjustment section 197 sends a correction value (second correction value S6) to the control device 131, and the control device 131 raises the transplant frame 36 based on the correction value. Specifically, if the ridges are hard or there is a mulch film, the difference in the height of the ground contact surface between the sensing roller 126 and the soil covering ring 62 is small, and the swinging frame 164 shifts to the upper side of the swinging range, so the raise switch 198 (“High”) to raise the transplant frame 36.

Note that the up switch 198 and the down switch 199 may be configured so that, for example, each time they are pressed, the numerical value can be changed in a predetermined dimensional unit. Furthermore, if the planting depth adjustment is aimed at 2 cm for the soil covering ring 62, the sensing roller 126 is aimed at 3 cm, which is 1 cm higher than the soil covering ring 62. That is, when the detection value of the sensing roller 126 becomes +1 cm (4 cm), the transplant frame 36 is raised, and when it becomes -1 cm (2 cm), the transplant frame 36 is lowered. Furthermore, when the raising switch 198 is pressed to raise the transplant frame height by 0.5 cm, the sensing roller 126 is controlled to a target of 2.5 cm, which is 0.5 cm higher than the soil covering wheel 62 (1-0.5=). Although the target height value will be lower, the height of the transplanted frame will be higher). That is, when the detection value of the sensing roller 126 becomes +1 cm (3.5 cm), the transplant frame 36 is raised, and when it becomes -1 cm (1.5 cm), the transplant frame 36 is lowered. Further, when the lowering switch 198 is pressed to "lower" the height of the transplant frame by 0.5 cm, the sensing roller 126 is controlled to a target of 3.5 cm, which is 1.5 cm higher than the soil covering wheel 62 (1+0.5=). That is, when the detection value of the sensing roller 126 reaches +1 cm (4.5 cm), the transplant frame 36 is raised, and when it becomes -1 cm (2.5 cm), the transplant frame 36 is lowered.

Here, with reference to FIGS. 33 and 34, the first planting lifting mechanism 167R and the second planting lifting mechanism 167L will be described. Since the first planting lifting mechanism 167R and the second planting lifting mechanism 167L are bilaterally symmetrical and formed with the same structure, the first planting lifting mechanism 167R and the second planting lifting mechanism 167L can be combined. explain.
As shown in FIGS. 33 and 34, the planting lifting mechanism 167 includes a first rotating case 201, a second rotating case 202, and a support plate 121. The first rotation case 201 is rotatably supported by the first side frame portion 164A via a first support shaft 205. Specifically, a bearing member 204 is provided on the bracket member 169 provided on the first side frame portion 164A, a first support shaft 205 is rotatably supported on the bearing member 204, and a first rotation case is attached to the first support shaft 205. 201 is supported. A sprocket 203 is attached to the support shaft 205 so as to be rotatable therewith. As shown in FIG. 28, power is transmitted to the sprocket 203 from a sprocket 207 that is rotatably attached to the planting drive shaft 165.

As shown in FIGS. 33 and 34, the second rotating case 202 is rotatably supported on the free end side of the first rotating case 201 around a second support shaft 206. As shown in FIGS. The support plate 121 is supported by the second rotating case 202. Specifically, a bearing member 209 is provided on the upper part of the support plate 121 via a pivot shaft 208, and a bearing member 211 is fixed to the lower end side of a plate member 210 that protrudes downward from this bearing member 209. A third support shaft 215 provided on the second rotating case 202 is supported. The planting body 12 is supported by the support plate 121. Specifically, the planting body 12 has a front structure 12A and a rear structure 12B, the upper front side of the front structure 12A is rotatably supported around a pivot 212A provided on the support plate 121, and the rear structure The upper rear side of the body 12B is rotatably supported around a pivot 212B provided on the support plate 121.

The planting lifting mechanism 167 is driven by the power transmitted to the first support shaft 205 to move the planting body 12 up and down. Specifically, as shown in FIG. 34, when the first rotating case 201 rotates in the direction of the arrow Y1 around the first support shaft 204, the first rotating case 201 and the second rotating case 202 are rotated. A power transmission device is provided so that the second rotating case 202 rotates in a direction opposite to that of the first rotating case 201 (arrow Y2 direction) in conjunction with the rotation of the second rotating case 202 . As the first rotation case 201 and the second rotation case 202 rotate, the support plate 121 moves back and forth and vertically in parallel, and the planting body 12 moves up and down (up and down) while drawing an elliptical trajectory. do.

As shown in FIG. 34, the planting body 12 is provided on the side of the planting lifting mechanism 167 (second rotation case 202). Specifically, the planting body 12 is provided at a position that overlaps the second rotating case 202 when viewed from the side. As a result, the planting device (planting body 12 and planting lifting mechanism 167) can be configured compactly, and as shown in FIG. It can be brought close to the seedling stand 9.

If the planting body 12 is placed so as to overlap the side of the planting lifting mechanism 167, soil from the root ball of the seedling 7 may splash onto the planting lifting mechanism 167 when the seedling 7 is introduced into the planting body 12. There is. Therefore, as shown in FIGS. 35 and 36, a cover member 213 is provided on the upper part of the support plate 121. The cover member 213 includes a first cover portion 213A that covers the bearing member 209, the bearing member 211, the bearing member 216A that supports the pivot shaft 212A, and the bearing member 216B that supports the pivot shaft 212B, and the space between the support plate 121 and the planting body 12. It has a second cover part 213B that covers from above.

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

As shown in FIG. 37, the first seedling mounting stand 9R and the second seedling mounting stand 9L are mounted on the main frame 37, arranged side by side in the machine width direction K2. The first seedling platform 9R and the second seedling platform 9L are supported by rail members (first rail 56, second rail 58) of the main frame 37 so as to be movable in the body width direction K2.
As shown in FIG. 38, the reversing guides 13 are provided at the center, right and left sides of the lower part of the seedling platform 9 in the width direction K2 of the machine, and are attached to support rods 217 provided at the bottom of the seedling platform 9. There is. The empty tray guide 14 includes a first rod part 14A disposed on the outer side of the body of the seedling table 9, a second rod part 14B placed on the inner side of the body of the seedling table 9, and a first rod part 14B. 14A and a connecting rod portion 14C that connects the upper portions of the second rod portion 14B. The lower part of the seedling stand 9 has a first accommodating part 218 provided on the right side and a second accommodating part 219 provided on the left side.

As shown in FIGS. 39 and 40, the first seedling mounting stand 9R has a first holder member 221R. The first holder member 221R includes an upper holder 222R and a lower holder 223R provided below the upper holder 222R. The upper holder 222R includes a first stay 224R attached to the first housing part 218, a second stay 225R attached to the second housing part 219, and a connecting stay 226R connecting the first stay 224R and the second stay 225R. has. A first stay plate 227R is fixed to the inboard side (left side) of the connection stay 226R. A connection bracket 228 is fixed to the connection stay 226R (see FIG. 46). The connection bracket 228 is disposed on the outer side of the first stay plate 227R and is also fixed to the first stay plate 227R. At the lower part of the first seedling platform 9R, an operating shaft 229 extending in the machine width direction K2 is rotatably provided across the machine body width direction K2. The outer side of the operating shaft 229 protrudes further outward than the first accommodating portion 218 . Two followers 230 are attached to the operating shaft 229 and spaced apart in the machine width direction K2.

The lower holder 223R includes a first stay 231R attached to the first housing part 218, a second stay 232R attached to the second housing part 219, and a connecting stay 233R connecting the first stay 231R and the second stay 232R. has.
A 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 by 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 by the second rail 58 so as to be movable in the body width direction K2.

As shown in FIGS. 39 and 40, the second seedling mounting stand 9L has a second holder member 221L. The second holder member 221L includes an upper holder 222L and a lower holder 223L provided below the upper holder 222L. The upper holder 222L includes a first stay 224L attached to the first housing part 218, a second stay 225L attached to the second housing part 219, and a connecting stay 226L connecting the first stay 224L and the second stay 225L. has. A second stay plate 227L is fixed to the inboard side (right side) of the connection stay 226L. The lower holder 223L includes a first stay 231L attached to the first housing part 218, a second stay 232L attached to the second housing part 219, and a connecting stay 233L connecting the first stay 231L and the second stay 232L. has.

A 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 by the first rail 56 so as to be movable in the body width direction K2. The plurality of second rollers 234L attached to the connecting stay 233L are supported by the second rail 58 so as to be movable in the body width direction K2.

As shown in FIG. 39, a connecting member 235 is provided that extends in the body width direction K2 from the left side of the first seedling platform 9R to the second seedling platform 9L. The first stay plate 227 is bolted to the right side of the connecting member 235. The second stay plate 227L is bolted to the connecting member 235 so that its position can be adjusted in the body width direction K2.
Since the first seedling rest 9R and the second seedling rest 9L are connected via the connecting member 235, the first seedling rest 9R and the second seedling rest 9L are connected to the first rail 56 and the second rail 58 in the body width direction K2.

FIG. 39 shows the state of the first seedling rest 9R and the second seedling rest 9L when the row spacing W1 is the narrowest. From this state, by changing the mounting position of the second stay plate 227L, the interval in the machine width direction K2 between the first seedling rest 9R and the second seedling rest 9L can be adjusted in accordance with the adjustment of the row spacing W1. It can be performed.
FIG. 41 shows a transverse feed mechanism 236 that intermittently transversely feeds the first seedling platform 9R and the second seedling platform 9L by one pitch of the pot portion 8a in the body width direction K2. The transverse feed mechanism 236 has a transverse feed shaft 237 arranged below the first seedling mounting table 9R. The lateral feed shaft 237 is arranged to extend in the machine width direction K2, and is supported by a support body 238 fixed to the first unit frame 38R. The support body 238 is provided on the frame body 64 of the first unit frame 38R. The support body 238 includes a first bracket 238A attached to the frame main 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, and a third bracket 238C fixed to the right end side of the second bracket 238B. It has a gear box 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 box 238D. The lateral feed shaft 237 is provided across the gear box 238D and the fourth bracket 238E. A first transmission sprocket 239 that is rotatable integrally with the drive main shaft 71 and movable in the axial direction is provided at the lower part of the third bracket 238C. The first transmission sprocket 239 can transmit power to a second transmission sprocket 240 provided on the second bracket 238B. The power transmitted to the second transmission sprocket 240 is transmitted from an input shaft rotatably provided to the second transmission sprocket 240 to the transverse feed shaft 237 via a transmission mechanism in the gear box 238D.

For the lateral feed shaft 237, a Napiya screw is used, which has a spiral groove (so-called traverse groove) 237a formed on the outer peripheral surface to reciprocate in the axial direction. A sliding body 241 having an engaging portion 241a that engages with the traverse groove 237a is fitted onto the traverse feed shaft 237. The sliding body 241 is provided with a connecting shaft 242, and the connecting shaft 242 is connected to a connecting bracket 228 provided on the first holder member 221R of the first seedling mounting table 9R. A vertical feed cam (operating body) 243 is fixed to the horizontal feed shaft 237 at one end and the other end.

When the transverse feed shaft 237 rotates, the engaging portion 241a is guided along the traverse groove 237a to reciprocate the sliding body 241 in the body width direction K2. Thereby, the first seedling platform 9R can be moved back and forth in the machine width direction K2. In addition, since the second seedling rest 9L is connected to the first seedling rest 9R via the connecting member 235, the first seedling rest 9R and the second seedling rest 9L are integrated in the machine width direction K2. It is possible to move back and forth.

When adjusting the row spacing W1, the first seedling mounting table 9R and the first unit frame 38R (first transplant unit 63R) are connected via the transverse feed mechanism 236, and the first seedling mounting table 9R and the second Since they are connected to the seedling platform 9L by the connecting member 235, the positions of the first seedling platform 9R, the second seedling platform 9L, and the first transplant unit 63R are integrally adjusted in the machine width direction K2. Ru. The position of the second transplant unit 63L is adjusted separately from the first transplant unit 63R. After adjusting the first transplant unit 63R and the second transplant unit 63L in the machine width direction K2, the position of the second seedling mounting table 9L is adjusted according to the adjusted row spacing W1.

FIG. 42 shows a vertical feeding mechanism 244 that vertically feeds the seedling tray 8 downward along the inclination direction by one pitch of the pot portion 8a, and the seedling retrieval device 11. The vertical feeding mechanism 244 includes a tray feeding mechanism 245 provided in each of the first accommodating section 218 and the second accommodating section 219 of each seedling mounting table 9. The tray feeding mechanism 245 includes a driving sprocket 246, a driven sprocket 247, and an endless conveyance chain 248 wrapped around the driving sprocket 246 and the driven sprocket 247. The conveyance chain 248 is provided with conveyance pins 249 that fit between the pot portions 8a at intervals in the longitudinal direction. By rotating the drive sprocket 246 in the direction of arrow Y3 in FIG. 42, the seedling tray 8 is vertically moved downward (in the direction of arrow Y4 in FIG. 42) along the mounting plate 10 via the conveyance chain 248 and the conveyance pin 249. sent.

As shown in FIG. 42, the seedling retrieval device 11 is disposed at the rear of the lower part of the seedling platform 9, and has a seedling retrieval claw 250. The seedling-taking claw 250 enters into the pot part 8a from the rear, pierces the root ball of the seedling 7, and retreats from the pot part 8a with the root ball pierced, thereby taking out the seedling 7 from the pot part 8a. After taking out the seedling 7, the seedling catcher 250 changes its posture so that the bed soil (root ball) of the seedling 7 faces the planting body 12 below, and then releases the seedling 7 to the planting body 12. throw into.

As shown in FIGS. 43 to 45, the vertical feed mechanism 244 has a vertical feed drive mechanism 251 that drives the tray feed mechanism 245. As shown in FIGS. The vertical feed drive mechanism 251 has a vertical feed main shaft 252. The vertical feed main shaft 252 is provided across the first seedling mounting table 9R and the second seedling mounting table 9L. Vertical feed power for sending the seedling tray 8 in the vertical feed direction Y4 (referred to as the vertical feed direction) is transmitted to the vertical feed main shaft 252. Further, the vertical feed drive mechanism 251 is provided in the first seedling mounting table 9R and performs a first vertical feeding operation to send the seedling tray 8 placed on the first seedling placing table 9R in the vertical feeding direction (vertical direction) Y4. It has a shaft 253R and a second vertical feed operation shaft 253L that is provided on the second seedling mounting table 9L and sends the seedling tray 8 placed on the second seedling placing table 9L in the vertical feeding direction (vertical direction) Y4. . The first vertical feed operating shaft 253R and the second vertical feed operating shaft 253L are formed in a cylindrical shape and are fitted to the outside of the vertical feed main shaft 252 so as to be relatively rotatable around the axis.

As shown in FIG. 44, the vertical feed main shaft 252 is a rotating body 255 to which vertical feeding power is transmitted, and a shaft fixed to the rotating body 255 and provided over the first seedling mounting table 9R and the second seedling mounting table 9L. body 256. The shaft body 256 (vertical feed main shaft 252) has an extended shaft portion 256a that projects from the second seedling mounting table 9L to the opposite side to the first seedling mounting table 9R. The shaft body 256 has a first shaft 256A on the first seedling platform 9R side and a second shaft 256B on the second seedling platform 9L side. An extended shaft portion 256a is provided on the second shaft 256B. The first shaft 256A and the second shaft 256B are coupled by a coupling body 257 between the first seedling mounting table 9R and the second seedling mounting table 9L. The combined body 257 includes a first joint 257A that is rotatably provided on the first shaft 256A, and a second joint 257B that is rotatably provided on the second shaft 256B. The first coupling portion 257A and the second coupling portion 257B are coupled by flange coupling or the like.

As shown in FIG. 44, the first vertical feed operation shaft 253R is fitted to the first shaft 256A (shaft body 256) so as to be relatively rotatable. The first vertical feed operation shaft 253R includes a first rotating barrel 259R having a first input portion 258R adjacent to the rotating body 255, a second rotating barrel 260R disposed on the opposite side of the first rotating barrel 259R, and a second rotating barrel 260R arranged on the opposite side of the first rotating barrel 259R. It has a connecting cylinder 261R that connects the first rotating cylinder 259R and the second rotating cylinder 260R. The drive sprocket 246 in the first accommodating portion 218 of the first seedling stand 9R is attached to the first rotary cylinder 259R so as to be integrally rotatable therewith. The drive sprocket 246 in the second accommodating portion 219 of the first seedling stand 9R is attached to the second rotary tube 260R so as to be integrally rotatable therewith. Therefore, the drive sprocket 246 of the first seedling platform 9R rotates integrally with the first vertical feed operating shaft 253R.

As shown in FIG. 44, a first longitudinal feed clutch 262R that intermittently transmits power from the vertical feed main shaft 252 to the first longitudinal feed operation shaft 253R is provided on the outside (right side) of the first seedling platform 9R. is located. The first vertical feed clutch 262R is provided on the opposite side of the first seedling platform 9R from the second seedling platform 9L. Thereby, the first seedling mounting table 9R and the second seedling mounting table 9L can be brought close to each other. The first vertical feed clutch 262R includes a driving engagement portion 263 provided on the rotary body 255, a clutch body 264 fitted to the first input portion 258R so as to be movable in the axial direction and rotatable integrally, and a clutch body 264 provided in the clutch body 264. and a driven meshing portion 265 that engages and disengages from the driving meshing portion 263 when the clutch body 264 moves in the axial direction. By moving the clutch body 264 in a direction approaching the rotary body 255 and engaging the driven meshing part 265 with the driving meshing part 263, the first longitudinal feed clutch 262R is brought into a connected state, and the first longitudinal feed is operated from the drive main shaft 71. Power is transmitted to the shaft 253R, and the seedling tray 8 of the first seedling mounting table 9R can be vertically fed. In addition, by moving the clutch body 264 in the direction away from the rotating body 255 and causing the driven meshing part 265 to move away from the driving meshing part 263, power is not transmitted from the drive main shaft 71 to the first vertical feed operating shaft 253R. The seedling tray 8 of the first seedling mounting table 9R is in a state where it cannot be vertically fed (the first vertical feeding clutch 262R is in a disconnected state).

A first clutch operating mechanism 266R that operates the first vertical feed clutch 262R is provided on the right side of the first seedling platform 9R. The first clutch operating mechanism 266R includes an operating lever 267, a clutch fork 268, and a return spring 269. The operating lever 267 is pivotally supported on the first seedling mounting table 9R so as to be able to swing up and down. The clutch fork 268 engages with the clutch body 264 and is connected to the operating lever 267. The return spring 269 biases the operating lever 267 in the upward direction. With the operating lever 267 pulled up, the first vertical feed clutch 262R is in the connected state. When the operating lever 267 is pulled down against the spring force of the return spring 269, the clutch main body 264 moves in the direction in which the driven meshing part 265 separates from the driving meshing part 263, and the first vertical feed clutch 262R becomes in a disengaged state. Note that the operating lever 267 can be held in a pulled down state.

As shown in FIG. 45, the second vertical feed operation shaft 253L is fitted to the second shaft 256B (shaft body 256) so as to be relatively rotatable. The second vertical feed operation shaft 253L is connected to a first rotary tube 259L on the side (right side) of the first seedling mounting table 9R, a second rotary tube 260L arranged on the opposite side to the first rotary tube 259L, and It has a connecting cylinder 261L that connects the cylinder 259L and the second rotating cylinder 260L. The second rotating barrel 260L has a second input portion 258L that is relatively rotatably fitted to the extended shaft portion 256a. The drive sprocket 246 in the first accommodating portion 218 of the second seedling stand 9L is attached to the first rotary cylinder 259L so as to be integrally rotatable therewith. The drive sprocket 246 in the second accommodating portion 219 of the second seedling stand 9L is attached to the second rotary cylinder 260L so as to be integrally rotatable therewith. Therefore, the drive sprocket 246 of the second seedling platform 9L rotates integrally with the second vertical feed operating shaft 253L.

As shown in FIG. 45, on the outside (left side) of the second seedling platform 9L, there is a second vertical feed clutch 262L that intermittently transmits power from the vertical feed main shaft 252 to the second vertical feed operating shaft 253L. is located. The second vertical feed clutch 262L includes a rotating portion 271 and a clutch shifter 272 that engages and disengages from the rotating portion 271. The rotating portion 271 is fitted into the extended shaft portion 256a so as to be movable in the axial direction and rotatable therewith. Moreover, the rotating part 271 is attached to the second seedling mounting table 9L, and moves integrally with the second seedling mounting table 9L. The clutch shifter 272 is fitted into the second input section 258L so as to be movable in the axial direction and rotatable therewith. The clutch shifter 272 engages and disengages from the rotating portion 271 by moving in the axial direction.

The rotating part 271 has a driving meshing part 271a, and the clutch shifter 272 has a driven meshing part 272a that meshes with the driving meshing part 271a. By engaging the driven engagement portion 272a of the clutch shifter 272 with the drive engagement portion 271a, the second longitudinal feed clutch 262L is brought into a connected state, power is transmitted from the drive main shaft 71 to the second longitudinal feed operating shaft 253L, and the second longitudinal feed clutch 262L is brought into a connected state. The seedling tray 8 of the seedling mounting table 9L can be vertically fed. Moreover, by separating the driven meshing part 272a of the clutch shifter 272 from the driving meshing part 271a, power is not transmitted from the drive main shaft 71 to the second vertical feed operating shaft 253L, and the seedling tray 8 of the second seedling mounting table 9L is moved. It becomes a state in which vertical feeding is not possible (the second longitudinal feeding clutch 262L is in a disconnected state).

A second clutch operating mechanism 266L that operates a second vertical feed clutch 262L is provided on the left side of the second seedling platform 9L. The second clutch operating mechanism 266L includes an operating lever 267, a clutch fork 268, and a return spring 269. The operating lever 267 is pivotably supported on the second seedling platform 9L so as to be able to swing up and down. Clutch fork 268 engages with clutch shifter 272 and is connected to operating lever 267. The return spring 269 biases the operating lever 267 in the upward direction. With the operating lever 267 pulled up, the second vertical feed clutch 262L is in the connected state. When the operating lever 267 is pulled down against the spring force of the return spring 269, the clutch shifter 272 moves in the direction in which the driven engagement portion 272a separates from the drive engagement portion 271a, and the second longitudinal feed clutch 262L becomes in a disengaged state. Note that the operating 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 tray 8 placed on the first seedling mounting table 9R and the second seedling mounting table 9L can be vertically fed. This allows for two-row planting. Further, when the first vertical feed clutch 262R is disconnected, only the seedling tray 8 placed on the second seedling mounting table 9L can be vertically fed. Furthermore, when the second vertical feed clutch 262L is disconnected, only the seedling tray 8 placed on the first seedling mounting table 9R can be vertically fed. This allows one row to be planted.

As shown in FIGS. 44 and 46, the vertical feed mechanism 244 includes a vertical feed actuation mechanism 273 that transmits power from the horizontal feed mechanism 236 to the vertical feed drive mechanism 251. The vertical feed operation mechanism 273 includes a rotary cylinder 275 rotatably supported by a shaft support 274 provided on the right side of the shaft body 256, and a swing lever 277 coupled to the rotary cylinder 275 via a one-way clutch 276. has. The swing lever 277 rotates together with the rotary cylinder 275 via the one-way clutch 276 when rotating in the direction of transmitting the vertical feed power (direction of arrow Y5 in FIG. 46). Further, when the swing lever 277 rotates in the direction opposite to the direction of the arrow Y5, the one-way clutch 276 idles, and the swing lever 277 does not rotate together with the rotary cylinder 275.

As shown in FIGS. 44 and 46, the vertical feed operation mechanism 273 includes a vertical feed gear 278 fixed to a rotary cylinder 275 and a ratchet arm 279. As shown in FIG. 44, the vertical feed gear 278 is bolted to the rotating body 255 and rotates together with the rotating body 255. The ratchet arm 279 is swingably supported by the first seedling mounting table 9R, and has an engaging portion 279a that engages with the engaging teeth 278a of the vertical feed gear 278. The swing lever 277 has an engagement pin 277a that engages with the ratchet arm 279. When the swing lever 277 rotates in the direction of arrow Y5, the rotary cylinder 275 and the vertical feed gear 278 rotate together, thereby rotating the rotating body 255. As a result, the seedling tray 8 is vertically fed by one vertical pitch of the pot portion 8a. At this time, the engagement pin 277a pushes up the ratchet arm 279. Then, the engaging portion 279a is disengaged from the engaging teeth 278a of the vertical feed gear 278. After the seedling tray 8 is vertically fed by one vertical pitch of the pot portion 8a, the swing lever 277 rotates in the direction opposite to the direction of the arrow Y5 and returns. When the swing lever 277 returns, the engagement pin 277a moves in the direction of lowering the ratchet arm 279 with respect to the ratchet arm 279, and the engagement portion 279a engages the next engagement tooth 278a of the vertical feed gear 278. do.

Note that two types of vertical feed gears 278 and ratchet arms 279 are provided so that the vertical feed amount can be set corresponding to two types of seedling trays 8 having different numbers of pot portions 8a and pitches of pot portions 8a. Further, a selection member is provided that selects one of the two types of ratchet arms 279 and engages it with the vertical feed gear 278.
As shown in FIG. 46, the swing lever 277 is operatively connected to the operating shaft 229 via an interlocking mechanism 280. When the first seedling platform 9R is horizontally fed by the rotation of the horizontal feed shaft 237 and reaches the end of the movement range in the horizontal feed direction, the vertical feed cam 243 that rotates integrally with the horizontal feed shaft 237 comes into contact with the follower 230, Actuation shaft 229 rotates. When the operating shaft 229 rotates, the interlocking 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 direction by a return spring (not shown) and returned.

As shown in FIG. 38, a seedling out sensor 281 is provided at the lower part of the seedling tray 9 to detect when the seedling tray 8 is to be replenished. With the seedling out sensor 281 activated, two seedling trays 8 can be replenished onto the mounting plate 10.
The lowest seedling tray 8 (the seedling tray 8 from which the seedlings 7 are taken out) is subjected to loads such as soil in the pot portion 8a of the upper seedling tray 8 and water contained in the soil. Then, due to the load of the seedling tray 8 above the lowest seedling tray 8, there is a possibility that the lowest seedling tray 8 may curve. Therefore, in this embodiment, the seedling mounting table 9 is provided with a tray holding mechanism 282 that suppresses the movement of the seedling tray 8 in the vertical feeding direction Y4. By suppressing the movement of the seedling tray 8 in the vertical feeding direction Y4 by the tray holding mechanism 282, it is possible to suppress the load on the lowest seedling tray 8 and prevent the lowest seedling tray 8 from curving. . Therefore, the tray holding mechanism 282 suppresses the seedling tray 8 located above the lowest seedling tray 8 from moving in the vertical feeding direction Y4. Further, the tray holding mechanism 282 is arranged on the rear side of the vertical feeding mechanism 244 in the vertical feeding direction Y4. Thereby, the tray holding mechanism 282 can be satisfactorily assembled without overlapping with the vertical feeding mechanism 244.

In this embodiment, a plurality of tray holding mechanisms 282 are provided. The plurality of tray holding mechanisms 282 include a first tray holding mechanism 282A that suppresses movement of the seedling tray 8 above the lowest seedling tray 8 in the vertical feeding direction, and a first tray holding mechanism 282A that suppresses movement of the top seedling tray 8 in the vertical feeding direction Y4. 282B. Further, each tray holding mechanism 282 includes a first holding mechanism 283 arranged on one side of the seedling tray 8 and a second holding mechanism 284 arranged on the other side of the seedling tray 8. .

The first tray holding mechanism 282A and the second tray holding mechanism 282B are formed with the same configuration, so they will be described together. Furthermore, since the first holding mechanism 283 and the second holding mechanism 284 are formed with the same configuration except for a part of the structure, the common parts are the same between the first holding mechanism 283 and the second holding mechanism 284. I will explain it all together.
FIG. 47 shows a plan view of the second holding mechanism 284. FIG. 48 shows a side view of the second holding mechanism 284. The front (front part) in the vertical feeding direction Y4 is the direction of the arrow Y4 in FIG. 47, and the rear (rear part) in the vertical feeding direction Y4 is the direction opposite to the direction of the arrow Y4.

As shown in FIGS. 47 and 48, the second holding mechanism 284 (first holding mechanism 283) includes a base member 286, a pivot 287, a rotating cylinder 288, a biasing member 289, a pressing member 290, It has a regulating rod 291.
The base member 286 is attached to the seedling mounting stand 9 (placing plate 10). Specifically, the base member 286 is formed from a plate material, and includes a mounting wall 286a attached to the end of the mounting plate 10 in the body width direction K2 with bolts or the like, and an end of the mounting wall 286a (on the side of the seedling tray 8). and a rising wall 286b extending in the normal direction of the mounting plate 10 from the end portion). The pivot 287 is disposed at the rear (upper part) of the base member 286 in the vertical 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 rotating tube 288 is fitted (supported) on the outside of the pivot 287 so as to be rotatable around the axis.

The biasing member 289 is formed by a tension coil spring. One end of the biasing member 289 is locked to a spring hook member 292 fixed to the rotating cylinder 288. The spring hook member 292 protrudes from the rotating tube 288 to the side opposite to the seedling tray 8. In other words, the spring hanging member 292 protrudes from the rotating cylinder 288 in a direction away from the center of the seedling platform 9 in the machine width direction K2 in the machine body width direction K2. The spring hook member 292 is provided with a plurality of spring hook 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. Thereby, the biasing force can be changed. The other end of the spring hanging member 292 is locked to a support plate 294 erected on the base member 286. The support plate 294 is provided at the front (lower part) of the base member 286 in the vertical feeding direction Y4.

As shown in FIGS. 49 and 50, the spring hook member 292A of the first holding mechanism 283 is fixed to the rotating cylinder 288 on the base side of the pivot shaft 287. As shown in FIGS. 49 and 51, the spring hook member 292B of the second holding mechanism 284 is fixed to the rotating cylinder 288 at the tip side of the pivot shaft 287. As shown in FIGS. Therefore, the spring hanging member 292A is arranged below the spring hanging member 292B. Thereby, the first seedling mounting table 9R and the second seedling mounting table 9L can be brought closer to each other.

As shown in FIGS. 48 to 51, the support plate 294 has two upper and lower spring hanging holes (locking portions) 295A and 295B. When one end of the biasing member 289 is to be hooked to the spring hooking member 292A of the first holding mechanism 283, the other end of the biasing member 289 is hooked to the lower spring hooking hole 295A. Moreover, when one end side of the biasing member 289 is hooked on the spring hook member 292B of the second pressing mechanism 284, the other end side of the biasing member 289 is hooked on the upper spring hook hole 295B.

As shown in FIGS. 47 and 48, the pressing member 290 has a fixing part 290a on the base end side, an abutting part 290b and a connecting part 290c in the middle, and a distal end part 290d on the distal end side. The fixed portion 290a is fixed to the rotating tube 288. The contact portion 290b is formed away from the fixed portion 290a on the front side in the vertical feeding direction Y4. The contact portion 290b is formed in a linear shape and contacts the seedling tray 8. Specifically, the contact portion 290b contacts the side surfaces of the plurality of pot portions 8a. That is, the pressing member 290 contacts the side surface of the seedling tray 8. The pressing member 290 may be brought into contact with the front surface (top wall 8b) of the seedling tray 8, but in this case, there is a risk that the pressing member 290 may pinch the leaves of the seedlings 7. By bringing the pressing member 290 into contact with the side surface of the seedling tray 8, it is possible to prevent the pressing member 290 from pinching the leaves of the seedlings 7.

As shown in FIG. 47, the connecting portion 290c connects the fixing portion 290a and the contact portion 290b. The connecting portion 290c is formed in an inclined shape that moves toward the seedling tray 8 (direction toward the center of the seedling platform 9 in the body width direction K2) as it goes from the fixed portion 290a in the vertical feeding direction Y4. Thereby, the seedling tray 8 can be well guided to the contact portion 290b.

The distal end portion 290d is formed to be inclined with respect to the contact portion 290b. Specifically, the tip side portion 290d moves in a direction away from the seedling tray 8 as it goes from the tip side end of the contact portion 290b toward the vertical feeding direction Y4 (from the center of the seedling platform 9 in the body width direction K2). It is formed in an inclined shape that transitions in the direction away from the center.
The urging force of the urging member 289 urges the pressing member 290 around the pivot 287 in a direction toward the seedling tray 8. Thereby, the pressing member 290 is urged by the urging member 289 and presses the seedling tray 8 . By pressing the seedling tray 8 with the pressing member 290, it is possible to suppress the seedling tray 8 from moving in the vertical feeding direction Y4. The movement of the seedling tray 8 in the vertical feeding direction Y4 is suppressed by the frictional force between the pressing member 290 and the side surface of the seedling tray 8, but this frictional force (the urging force of the urging member 289) The force is set to suppress the movement of the seedling tray 8 in the vertical feeding direction Y4, but does not stop the movement of the seedling tray 8 having the moisture-containing bed soil in the vertical feeding direction Y4 due to its own weight.

As shown in FIGS. 47 and 48, the regulating rod 291 is fixed to the base member 286. The regulating rod 291 has a first regulating portion 296 . The first regulating portion 296 is located in the middle of the regulating rod 291 in the vertical feeding direction Y4. The first regulating portion 296 is formed in a linear shape, is located on the upper surface side of the side edge of the seedling tray 8, and regulates the upward movement of the seedling tray 8. The first regulating portion 296 is fixed to the upper part of the support plate 294.

The rear part 297 of the regulating rod 291 has a first part 297a extending in an inclined direction that moves away from the seedling tray 8 as it goes rearward in the longitudinal feeding direction Y4 from the rear end of the first regulating part 296 in the longitudinal feeding direction Y4. , and a second portion 297b extending downward from the rear end of the first portion 297a in the vertical feeding direction Y4 and fixed to the mounting wall 286a of the base member 286.
The regulating rod 291 has a second regulating portion 298 that regulates rotation of the pressing member 290 around the pivot shaft 287 when the pressing member 290 does not press the seedling tray 8 . The second restricting portion 298 is constituted by the front portion of the restricting rod 291. The second regulating section 298 includes a first section 298a extending in an inclined direction that moves away from the seedling tray 8 as it goes from the front end of the first regulating section 296 in the vertical feeding direction Y4, and a first section 298a. It has a second portion 298b that extends downward from 298a and can be brought into contact with the tip side portion 290d of the pressing member 290.

When the seedling tray 8 passes the pressing member 290, the pressing member 290 rotates around the pivot 287 toward the center of the mounting plate 10 in the body width direction K2. The rotation of the pressing member 290 can be restricted by the abutment of the distal end portion 290d of the pressing member 290 . This can prevent the pressing member 290 from entering the center of the placement plate 10 and interfering with the supply of the seedling trays 8. Further, when replenishing the seedling tray 8, there is no need to take the trouble of widening the interval between the pressing members 290 facing each other in the machine width direction K2.

As shown in FIG. 52, in the transplanter 1 of this embodiment, a leveling plate 299 can be attached to the front lower part of the main frame 37. The leveling board 299 is arranged in front of the planting body 12 to level the planting surface 300 of the field 6. The first sensing roller 126R and the second sensing roller 126L are arranged behind the leveling plate 299.
For example, in flat furrows that have been tilled with a rotary tiller or the like, the spaces (joints) between adjacent tillage marks are raised. If seedling 7 is planted in this joint, seedling 7 will be buried. Therefore, a leveling plate 299 can be attached to the transplanter 1. By leveling the planting surface 300 before planting with the leveling board 299, the distance between adjacent plowing marks can be leveled, and the seedlings 7 can be planted well.

As shown in FIG. 53, the leveling plate 299 includes a leveling plate main body 301 and a mounting portion 302. The leveling board main body 301 has a first board 303 and a second board 304. The first plate 303 constitutes the main plate of the leveling plate main body 301, and is made of an elastic resin plate. In this embodiment, the first plate 303 is formed of a first resin plate 303R on the right side and a second resin plate 303L on the left side. Note that the first plate 303 may be formed of a single plate material.

The second plate 304 constitutes a reinforcing plate of the leveling plate main body 301, and is formed of a metal plate material. In this embodiment, the second plate 304 is formed of a single plate. Note that the second plate 304 may be formed in a divided shape. The second plate 304 has a main body plate portion 304a and an extended plate portion 304b. The main body plate portion 304a is formed in a rectangular flat plate shape that is long in the body width direction K2. The extending plate portion 304b extends from the lower end of the main body plate portion 304a. Specifically, the extending plate portion 304b extends downward from the lower end of the main body plate portion 304a in the normal direction of the main body plate portion 304a.

The first plate 303 is located on the lower surface side of the corner portion of the mounting plate portion 303a superposed and attached to the lower surface of the main body plate portion 304a of the second plate 304, and the main body plate portion 304a and the extension plate portion 304b. It has a curved portion 303b and a lower end side portion (ground contact portion) 303c extending from the lower end of the curved portion 303b. The mounting plate portion 303a is attached to the upper part of the main body plate portion 304a with bolts 306A and nuts 306B. Specifically, a strip plate material 305 is provided on the lower surface side of the mounting plate portion 303a across the fuselage width direction K2, and a bolt 306A is inserted from below through the strip plate material 305, the first plate 303, and the second plate 304, and the bolt 306A is inserted into the upper part of the bolt 306A. The first plate 303 is attached to the second plate 304 by screwing in a nut 306B.

The curved portion 303b is provided from the lower end of the main body plate portion 304a to the lower end of the extended plate portion 304b, and is formed in a curved shape convex toward the rear. The lower end portion 303c protrudes from the lower end of the extending plate portion 304b. Specifically, the lower end portion 303c is inclined with respect to the main body plate portion 304a, and the tip portion 303d is located on an extension line r1 of the lower surface of the main body plate portion 304a.

As shown in FIG. 54, the attachment portion 302 is provided at the upper part of the second plate 304 and above the attachment portion (bolt 306A, nut 306B) of the first plate 303. As shown in FIG. 53, a plurality of attachment parts 302 are provided. The plurality of attachment parts 302 include a first attachment part 302R provided on the right side of the second plate 304 and a second attachment part 302L provided on the left side of the second plate 304.

As shown in FIGS. 54 and 55, the attachment portion 302 is attached to a bracket member 307 fixed to the second frame 40. As shown in FIGS. The bracket member 307 includes a fixed wall portion 307a fixed to the front surface of the second frame 40, a first wall portion 307b protruding forward from the outer end of the fixed wall portion 307a, and a fixed wall portion 307b of the fixed wall portion 307a. It has a second wall portion 307c that protrudes forward from the inner end of the body. The second wall portion 307c has an extending portion 307d at the upper portion. A first pin 308 is attached to the extended portion 307d. The upper part of the leveling plate 299 is arranged on the front side of the bracket member 307, and the attachment part 302 provided on the upper part of the leveling plate 299 is attached to the bracket member 307.

The mounting portion 302 includes a base wall 302a fixed to the second plate 304, a first side wall 302b extending from the outer end of the base wall 302a toward the bracket member 307, and a base wall 302a fixed to the base wall 302a. It has a second side wall 302c extending toward the bracket member 307 from the end on the inside of the body. The first side wall 302b has an extension 302d at the top. A second pin 309 is attached to the extension portion 302d. The first side wall 302b is arranged on the outside of the first wall portion 307b. The second side wall 302c is located inside the second wall portion 307c.

As shown in FIG. 55, the mounting portion 302 extends in the body width direction K2 to the bracket member 307 by a mounting pin 310 penetrating the first side wall 302b, the first wall portion 307b, the second wall portion 307c, and the second side wall 302c. It is rotatably mounted around the axis. Thereby, the leveling plate 299 is supported by the bracket member 307 so as to be able to swing up and down.
The attachment portion 302 includes a biasing spring 311 that biases the leveling plate main body 301 downward (toward the ground side). The biasing spring 311 is formed by a torsion coil spring, and the coil portion 311a is fitted on the outside of the attachment pin 310 between the first wall portion 307b and the second wall portion 307c. One end 311b of the biasing spring 311 is hooked onto the first pin 308. The other end 311c of the biasing spring 311 is hooked onto the second pin 309.

In FIG. 53, the symbol W1a indicates the minimum distance between rows, and the symbol W1b indicates the maximum distance between rows. The symbol W2 indicates the width of the leveling plate 299 (leveling plate main body 301) in the body width direction K2. The symbol W3 indicates the distance between the outer ends of the first planting body 12R and the second planting body 12L in the body width direction K2 when the row spacing W1 is set to the maximum row width W1b. The symbol W4 indicates the distance between the outer ends of the first sensing roller 126R and the second sensing roller 126L in the body width direction K2 when the distance W1 is set to the maximum distance W1a.

As shown in FIG. 53, the width W2 is wider than the distance W3. Furthermore, the width W2 is wider than the distance W4.
As described above, the leveling plate 299 is formed to have a width W2 that corresponds to the adjustment of the row spacing, and there is no need to change the position of the leveling plate 299 even if the spacing is adjusted.
The transplanting machine 1 of the present embodiment described above includes a mounting plate 10 on which at least one seedling tray 8 is mounted in a downwardly inclined state, and a mounting plate 10 that vertically feeds the seedling tray 8 downward along the mounting plate 10. The tray holding mechanism 282 includes a vertical feeding mechanism 244 and a tray holding mechanism 282 that suppresses the movement of the seedling tray 8 in the vertical feeding direction Y4. and a pressing member 290 that presses the seedling tray 8.

According to this configuration, it is possible to suppress the seedling tray 8 from moving in the vertical feeding direction Y4 by the pressing member 290 that is urged by the urging member 289 and presses the seedling tray 8. Thereby, curvature of the seedling tray 8 can be suppressed.
Further, the pressing member 290 presses the side surface of the seedling tray 8.
According to this configuration, by pressing the side surface of the seedling tray 8, it is possible to prevent the seedlings 7 from being pinched by the pressing member 290.

Further, the tray holding mechanism 282 is arranged on the rear side of the vertical feeding mechanism 244 in the vertical feeding direction Y4.
According to this configuration, the tray holding mechanism 282 does not overlap the vertical feeding mechanism 244, and the tray holding mechanism 282 can be installed satisfactorily.
Further, the tray holding mechanism 282 includes a base member 286 attached to the mounting plate 10, a pivot 287 fixed to the base member 286, and a rotating cylinder 288 rotatably supported by the pivot 287, The pressing member 290 has a fixed part 290a fixed to the rotating tube 288, a contact part 290b that contacts the seedling tray 8, and a connecting part 290c that connects the fixed part 290a and the contact part 290b.

According to this configuration, the pressing member 290 can be attached to the mounting plate 10 in a state where it is assembled to the base member 286, and the assembly can be facilitated.
Further, the pivot 287 and the rotating cylinder 288 are arranged on the rear side of the pressing member 290 in the vertical feeding direction Y4, and the connecting portion 290c is arranged in a direction that approaches the seedling tray 8 as it goes from the fixed portion 290a in the vertical feeding direction Y4. It is formed in an inclined shape that transitions to .

According to this configuration, the seedling tray 8 can be smoothly guided to the contact portion 290b.
Further, the tray holding mechanism 282 has a regulating rod 291 fixed to the base member 286, and the regulating rod 291 is located on the upper side of the side edge of the seedling tray 8 to restrict upward movement of the seedling tray 8. It has a first restricting part 296 and a second restricting part 298 that restricts the rotation of the pressing member 290 about the axis 287 when the pressing member 290 does not press the seedling tray 8 .

According to this configuration, the first regulating portion 296 can prevent the seedling tray 8 from floating up. Further, when the seedling tray 8 passes the pressing member 290, the second regulating portion 298 can restrict the pressing member 290 from swinging toward the center of the mounting plate 10 in the body width direction K2. Thereby, it is possible to prevent the pressing member 290 from interfering with replenishment of the seedling tray 8.

Further, the tray holding mechanism 282 includes a support plate 294 that is erected on the base member 286 and supports the regulating rod 291, a spring hook member 292 fixed to the rotating cylinder 288, and a biasing member 289. The support plate 294 is formed by a tension coil spring whose one end is engaged with the spring hanging member 292, and the support plate 294 has engagement parts 295A and 295B which engage the other end of the tension coil spring.

According to this configuration, the regulating rod 291 and the biasing member 289 can be attached to the mounting plate 10 in a state where the base member 286 is assembled, and the assembly can be facilitated.
The seedling extraction device 11 is also provided to take out the seedlings 7 from the seedling tray 8. The seedlings 7 can be taken out from the lowest seedling tray 8 of the plurality of seedling trays 8 placed on the placing plate 10, and the tray holding mechanism 282 is capable of removing the seedlings 7 located above the lowest seedling tray 8. The tray 8 is suppressed from moving in the vertical feeding direction Y4.

According to this configuration, it is possible to suppress the load from the upper seedling tray 8 being applied to the seedling tray 8 from which the seedlings 7 are taken out, and the curvature of the seedling tray 8 from which the seedlings 7 are taken out. can be suppressed.
Further, the tray holding mechanism 282 has a first holding mechanism 283 and a second holding mechanism 284 that include a biasing member 289 and a pressing member 290, and the first holding mechanism 283 is attached to one side of the seedling tray 8. The second holding mechanism 284 is arranged on the other side of the seedling tray 8.

According to this configuration, by pressing the seedling tray 8 from both sides in the body width direction K2, movement of the seedling tray 8 in the vertical feeding direction Y4 can be effectively suppressed.
Furthermore, the transplanting machine 1 of this embodiment includes a planting machine 4 having a plurality of planting bodies 12 that reciprocate up and down and plunges into the field 6 to plant seedlings 7 when descending; A running body 5 disposed in front, a working machine mounting device 123 for swingably mounting the planting work machine 4 on the running body 5 around a rolling axis X1 extending in the machine body longitudinal direction K1, and a planting work machine. 4 about the rolling axis X1, and the plurality of planting bodies 12 include a first planting body 12R and a second planting body 12L arranged side by side in the body width direction K2. The rolling mechanism 135 sets a first height H1 of the first planting body 12R with respect to the planting surface of the field 6 and a second height H2 of the second planting body 12L with respect to the planting surface to a predetermined height. In order to do this, the planting machine 4 is swung around the rolling axis X1.

According to this configuration, by swinging the planting work machine 4 around the rolling axis X1, the height of the first planting body 12R with respect to the planting surface and the height of the second planting body 12L with respect to the planting surface can be adjusted. can be set to a predetermined height. Thereby, the planting depth of the seedlings 7 planted by the first planting body 12R and the planting depth of the seedlings 7 planted by the second planting body 12L can be matched.

The control device 131 also includes a control device 131 that controls the rolling mechanism 135, and the control device 131 controls the height when the difference in height between the first height H1 and the second height H2 is more than a predetermined value when planting the seedlings 7. The planting machine 4 is swung around the rolling axis X1 in a direction to reduce the difference in height.
According to this configuration, it is possible to suppress the planting work machine 4 from operating sensitively, and it is possible to stably perform rolling control for swinging the planting work machine 4 around the rolling axis X1.

Moreover, the planting work machine 4 is arranged in front of the first planting body 12R, and is used for detecting the height of the planting surface (first planting surface 144R) corresponding to the first planting body 12R. A second sensing roller 126R and a second sensing roller 126R for detecting the height of a planting surface (second planting surface 144L) that is arranged in front of the first planting body 12R and corresponds to the second planting body 12L. and a sensing roller 126L, and the control device 131 rolls the planting machine 4 in a direction that reduces the difference in height based on the detected values detected by the first sensing roller 126R and the second sensing roller 126L. Swing around axis X1.

According to this configuration, the height of the planting surface corresponding to the first planting body 12R is detected by the first sensing roller 126R, and the height of the planting surface corresponding to the second planting body 12L is detected by the second sensing roller 126L. By detecting the height, the first height H1 and the second height H2 can be easily detected.
In addition, the work machine mounting device 123 has a work machine lifting mechanism 125 that raises and lowers the planting work machine 4, and the control device 131 detects it by one of the first sensing roller 126R or the second sensing roller 126L. The planting machine 4 is raised and lowered based on the unevenness of the field 6, and the difference in height is calculated based on the height of one sensing roller and the other sensing roller.

According to this configuration, by raising and lowering the planting machine 4 based on the unevenness of the field 6 detected by one of the sensing rollers, the raising and lowering of the planting machine 4 can be stably controlled. Further, by calculating the height difference between the first height H1 and the second height H2 with one sensing roller as a reference, rolling control is performed to swing the planting machine 4 around the rolling axis X1. can be performed stably.

Further, if the height difference is less than a predetermined value, the height difference is absorbed by the free swinging of the planting machine 4 around the rolling axis When this happens, the rolling mechanism 135 is activated.
According to this configuration, rolling control for swinging the planting work machine 4 around the rolling axis X1 can be stably performed.

The planting work machine 4 also includes a first roller bracket 146R that supports the first sensing roller 126R in a vertically swingable manner, a first biasing spring 147R that biases the first roller bracket 146R downward, and a first A first sensor mechanism 156R that detects the amount of swing of the roller bracket 146R, a second roller bracket 146L that supports the second sensing roller 126L in a vertically swingable manner, and a second attachment that urges the second roller bracket 146L downward. The first sensor mechanism 156R includes a biasing spring 147L and a second sensor mechanism 156L that detects the amount of rocking of the second roller bracket 146L. The first detection arm 159R has an abutment element 161 connected to the detector and abuts on the first roller bracket 146R on the other end side, and a first detection arm 159R that swings in conjunction with the first roller bracket 146R. The two-sensor mechanism 156L includes a second height detection sensor 157L and a contact element 161 that is connected to the detector of the second height detection sensor 157L at one end and abuts on the second roller bracket 146L at the other end. It also includes a second detection arm 159L that swings in conjunction with the second roller bracket 146L.

According to this configuration, a mechanism for detecting the height of the planting surface can be easily constructed.
Further, the rolling mechanism 135 includes a rolling motor 136 attached to the working machine mounting device 123 and a rolling roller 137 rotationally driven by the rolling motor 136, and a rolling roller 137 that is wound around the rolling roller 137 and has one end attached to the body of the planting working machine 4. It has a cable body 138 that is connected to one side in the width direction K2 and whose other end side is connected to the other side of the body width direction K2 of the planting machine 4.

According to this configuration, the rolling mechanism 135 that swings the planting machine 4 around the rolling axis X1 can be easily constructed.
The transplanter 1 of the present embodiment also includes a transplanting frame 36, a swinging frame 164 that is supported to be vertically swingable with respect to the transplanting frame 36, and a swinging frame 164 that is provided on the swinging frame 164 and that supports seedlings 7 in the field 6. A planting body 12 to be planted, a roller frame 168 that is supported by a swing frame 164 so as to be able to swing up and down, a grounding roller (covering ring 62) that is attached to the roller frame 168 and is in contact with the field 6, and a roller frame 168. A planting depth adjustment mechanism 172 is provided, which adjusts the planting depth of the seedlings 7 by fixing the distance between the swing frame 164 and the swinging frame 164 so as to be changeable, and changing the distance. , a mechanism frame 173 provided on the swing frame 164, an adjustment motor 174 attached to the mechanism frame 173, a drive mechanism 175 driven by the adjustment motor 174, and a drive mechanism 175 and roller frame 168 connected and driven. It has a link member 176 that moves up and down in conjunction with the drive of the mechanism 175.

According to this configuration, the planting depth of the seedlings 7 can be adjusted by driving the drive mechanism 175 by the adjustment motor 174 to move the link member 176 up and down. Thereby, the planting depth of the seedlings 7 can be easily adjusted.
The drive mechanism 175 also includes a first gear 177 driven by the adjustment motor 174, and a second gear 178 that meshes with the first gear 177 and rotates, thereby moving the link member 176 up and down. ing.

According to this configuration, the drive mechanism 175 can be configured with a simple structure.
Further, the first gear 177 is formed by a pinion gear, and the second gear 178 is formed by a sector gear, and the sector gear has a connecting portion 178b that connects the link member 176.
According to this configuration, the drive mechanism 175 can be configured even more easily.

It also includes a work equipment lifting mechanism 125 that raises and lowers the transplant frame 36 and a control device 131 that controls the work equipment lifting mechanism 125. The transplant frame 36 is raised and lowered in a direction that returns the relative position of the swing frame 164 to the transplant frame 36.
According to this configuration, the swing frame 164 can be returned to the center of the swing range as the planting depth is adjusted.

The planting depth adjustment mechanism 172 also includes a detection unit 182 that detects the amount of change in the interval between the roller frame 168 and the swing frame 164 and feeds it 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 it back to the control device 131, so that the swing frame 164 is accurately positioned at the center of the swing range. can be returned to.

The drive mechanism 175 also includes a first gear 177 driven by the adjustment motor 174, and a second gear 178 that meshes with the first gear 177 and rotates, thereby moving the link member 176 up and down. , the detection unit 182 is a potentiometer that detects the amount of rotation of the second gear 178.
According to 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.

Further, the mechanism frame 173 is erected on the swing frame 164, the adjustment motor 174 is attached to the upper part of the mechanism frame 173, the pinion gear is rotatably attached to the upper part of the mechanism frame 173, and the sector gear has a lower part. It is pivotally supported by a mechanism frame 173, and has a gear portion 178a at the top that engages with a pinion gear.
According to this configuration, the configuration of the drive mechanism 175 can be simplified and constructed.

The transplanter 1 of this embodiment also includes at least one planting body 12 for planting seedlings 7 in the field 6, and a planting depth adjustment mechanism for adjusting the planting depth of the seedlings 7 planted by the planting body 12. 172, a traveling body 5 that runs with the planting work machine 4 mounted thereon, a driver's seat 3 mounted on the traveling body 5, and a control that controls the planting depth adjustment mechanism 172. It includes a device 131 and an operation section 127 that is provided near the driver's seat 3 and sends an operation signal for operating a planting depth adjustment mechanism 172 to the control device 131.

According to this configuration, the planting depth adjustment mechanism 172 can be operated by the operating section 127 provided near the driver's seat 3, so the planting depth can be easily adjusted.
Further, the operation section 127 includes a planting depth adjustment section 190 that operates the planting depth adjustment mechanism 172.
The planting depth adjustment section 190 also includes a rotation operation section (operation dial 191) that sends an operation signal to the control device 131 by rotating it, and an indicator 192 that indicates the rotational position of the rotation operation section (operation dial 191). have

According to this configuration, the planting depth can be easily adjusted by rotating the rotary operation section (operation dial 191). Further, since it has an indicator 192 that indicates the rotational position of the rotary operation section (operation dial 191), the rotation operation section (operation dial 191) can be easily operated.
Further, the rotation operation unit (operation dial 191) sends a first operation signal to the control device 131 to operate the planting depth adjustment mechanism 172 in the direction of deepening the planting depth of the seedlings 7 by rotating it in one direction. , a second operation signal is sent to the control device 131 to operate the planting depth adjustment mechanism 172 in the direction of shallowing the planting depth of the seedlings 7 by rotating it in the other direction. It has a depth display section 193 that indicates the operation direction of the operation section (operation dial 191).

According to this configuration, the rotation operation section (operation dial 191) can be operated more easily.
In addition, a work machine mounting device 123 is provided to attach the planting work machine 4 to the traveling body 5 so as to be swingable around a rolling axis X1 extending in the longitudinal direction K1 of the machine body, and a work machine mounting device 123 is provided to attach the planting work machine 4 to the traveling body 5 so as to be swingable around a rolling axis X1 extending in the body longitudinal direction K1. A rolling mechanism 135 for swinging the machine around the rolling axis X1, a plurality of planting bodies 12 are provided, and the plurality of planting bodies 12 are arranged side by side in the body width direction K2 with the rolling axis X1 in between. The operating section 127 includes an angle adjustment section 194 that operates the rolling mechanism 135, and the angle adjustment section 194 controls the planting around the rolling axis X1. A first lowering signal for lowering the first planting body 12R side of the working machine 4 or a second lowering signal for lowering the second planting body 12L side is sent to the control device 131.

According to this configuration, the planting depth of the first planting body 12R and the second planting body 12L can be finely adjusted. Specifically, when the seedlings 7 planted by the first planting body 12R and the seedlings 7 planted by the second planting body 12L have different planting depths in a ridge of the same height, the angle adjustment unit 194 performs rolling. By swinging and adjusting the planting machine 4 around the axis X1, the planting depth can be finely adjusted.

The angle adjustment section 194 also includes a first switch 195 that sends a first lowering signal to the control device 131, and a second switch 196 that sends a second lowering signal to the control device 131.
According to this configuration, the operation of lowering the first planting body 12R arrangement side of the planting machine 4 and the operation of lowering the second planting body 12L arrangement side can be made clear.
The planting work machine 4 also includes a work machine lifting mechanism 125 controlled by the control device 131, and includes a transplant frame 36 that is raised and lowered by the work machine lift mechanism 125, and a transplant frame 36 that is supported by the transplant frame 36 and is used for planting plants in the field 6. A sensing roller 126 that moves up and down to follow the planting surface to detect the height of the planting surface; a swinging frame 164 to which the planting body 12 is attached and supported by the transplanting frame 36 so as to be able to swing up and down; The operating section 127 includes a transplanting portion height adjustment section 197 that corrects the difference in the amount of sinking between the sensing roller 126 and the soil covering ring 62.

According to this configuration, the difference in the amount of sinking between the sensing roller 126 and the soil covering wheel 62 can be corrected.
The transplantation section height adjustment section 197 also includes a raise switch 198 for sending a correction value for raising the transplantation frame 36 to the control device 131, and a lowering switch 199 for sending a correction value for lowering the transplantation frame 36 to the control device 131. has.

According to this configuration, by raising or lowering the transplant frame 36, the amount of sinking between the sensing roller 126 and the soil covering ring 62 can be corrected.
The transplanting machine 1 of the present embodiment also includes a main frame 37, a first seedling mounting table 9R and a second seedling stand that are arranged side by side in the machine width direction K2 and supported by the main frame 37 so as to be movable in the machine width direction K2. A connecting member 235 that connects the mounting table 9L, the first seedling mounting table 9R and the second seedling mounting table 9L, and a first seedling extraction device that takes out the seedlings 7 from the seedling tray 8 placed on the first seedling mounting table 9R. From a first transplant unit 63R having a first planting device 35R for planting the seedlings 7 taken out by the device 11R and the first seedling take-out device 11R in the field 6, and a seedling tray 8 placed on the second seedling mounting stand 9L. A second transplant unit 63L having a second seedling retrieving device 11L for taking out the seedlings 7 and a second planting device 35L for planting the seedlings 7 taken out by the second seedling retrieving device 11L in the field 6, and attached to the first transplanting unit 63R. The first transplanting unit 63R and the second transplanting unit 63L are each independently attached to the main frame 37 in the machine width direction K2. The first seedling mounting table 9R and the first transplant unit 63R are supported so as to be adjustable in position in the direction K2, and are connected via a cross-feeding mechanism 236 and can be integrally adjusted in position in the body width direction K2, The second seedling platform 9L is attached to the connecting member 235 so that its position can be adjusted in the 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 machine width direction K2, and the first seedling mounting table 9R and the second seedling mounting table 9L are It moves as the position of the transplant unit 63R is adjusted. After adjusting the position of the first transplant unit 63R, the second seedling mounting table 9L is adjusted in position relative to the connecting member 235 in the body width direction K2. Thereby, without using a complicated interlocking mechanism, it is possible to adjust the distance between the first transplant unit 63R and the first seedling stand 9R, and the second transplant unit 63L and the second seedling stand 9L.

Further, a drive main shaft 71 is disposed at the front of the first transplant unit 63R and the second transplant unit 63L to extend in the machine width direction K2, is supported by the main frame 37, and transmits power to the lateral feed mechanism 236. The first transplant unit 63R has a first unit frame 38R to which the first seedling retrieval device 11R and the first planting device 35R are attached, and the second transplant unit 63L has the second seedling retrieval device 11L and the second seedling retrieval device 11R. It has a second unit frame 38L to which the planting device 35L is 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 body width direction K2.

According to this configuration, the structure can be simplified by using the drive main shaft 71 as a support member for the first unit frame 38R and the second unit frame 38L.
The main frame 37 also includes a first connection plate 61R arranged behind the first unit frame 38R and a second connection plate 61L arranged behind the second unit frame 38L. has a first mounting plate 76R that is attached to the first connection plate 61R so that its position can be adjusted in the body width direction K2, and the second unit frame 38L is attached to the second connection plate 61L so that its position can be adjusted in the body width direction K2. It has a second mounting plate 76L to which it is attached.

According to this configuration, the interval adjustment structure between the first transplant unit 63R and the first seedling mounting table 9R, and the second transplanting unit 63L and the second seedling mounting table 9L can be simplified.
The main frame 37 also has rail members (first rail 56, second rail 58) extending in the machine width direction K2, and the first seedling platform 9R is movable in the machine body width direction K2 on the rail member. The second seedling platform 9L includes a supported first roller 234R and a first holder member 221R to which the first roller 234R is attached. It has a roller 234L and a second holder member 221L to which the second roller 234L is attached, the first holder member 221R has a first stay plate 227R attached to the connecting member 235, and the second holder member 221L has It has a second stay plate 227L attached to the connecting member 235.

According to this configuration, the interval adjustment structure between the first seedling mounting table 9R and the second seedling mounting table 9L can be simplified.
Further, the transplanting machine 1 of the present embodiment includes a planting machine 4 and a traveling body 5 that is mounted with the planting machine 4 and runs, and the planting machine 4 places seedlings 7 in the field 6. At least one planting body 12 to be planted, a main frame 37 attached to the traveling body 5, a rotationally driven drive shaft 71 extending in the machine width direction K2 at the front of the main frame 37, and a drive main shaft. The main drive shaft 71 has at least one irrigation pump 82 that is driven by the power from the machine body 71 to irrigate the seedlings 7, and the drive main shaft 71 has a power extraction part 80 for taking out the power on the end side in the body width direction K2. However, the irrigation pump 82 is arranged vertically in front of the power take-off section 80 and further inside the body than the end of the main frame 37 in the body width direction K2.

According to this configuration, by arranging the irrigation pump 82 vertically in front of the power take-off section 80 and further inside the aircraft body than the end of the main frame 37 in the aircraft width direction K2, the irrigation pump 82 hits an obstacle. can be suppressed.
Further, an irrigation transmission mechanism 99 that transmits power from the power extraction section 80 to the irrigation pump 82 is provided, and the irrigation pump 82 is formed by a reciprocating pump having a cylinder 97 and a piston 98 that reciprocates within the cylinder 97. Reference numeral 99 denotes a first irrigation sprocket 100 attached to the power take-off part 80, a second irrigation sprocket 101 disposed in front of the first irrigation sprocket 100 and to which power is transmitted from the first irrigation sprocket 100, and a second irrigation sprocket 101. At least one rotating member 102 that rotates integrally with the sprocket 101, and at least one connecting link 103 that has one end connected to the rotating member 102 at a position offset from the rotation axis X2 and the other end connected to the piston 98. have

According to this configuration, the structure of the irrigation transmission mechanism 99 that transmits power from the power extraction section 80 to the irrigation pump 82 can be simplified.
The main frame 37 also includes a support bracket 59 that supports the power extraction section 80 and a pump bracket 110 that attaches the irrigation pump 82. The pump bracket 110 includes a first member 110A that is attached to the support bracket 59, and a A second member 110B fixed to the upper part of the first member 110A, a third member 110C fixed to the front part of the second member 110B in an upwardly protruding manner, and a fourth member 110D fixed to the upper part of the third member 110C. and a fifth member 110E fixed to the lower part of the third member 110C, the irrigation pump 82 is disposed on the side of the third member 110C, the upper part is attached to the fourth member 110D, and the irrigation pump 82 has an irrigation transmission mechanism. 99 has an irrigation drive shaft 112 rotatably supported around an axis extending in the body width direction K2 on the fifth member 110E, and the second irrigation sprocket 101 and the rotating member 102 are integrally connected to the irrigation drive shaft 112. Rotatably mounted.

According to this configuration, the irrigation pump 82 and the pump bracket 110 can be assembled in a compact manner in front of the power take-off section 80.
In addition, a plurality of planting bodies 12, irrigation pumps 82, rotating members 102, and connection links 103 are provided, and the plurality of planting bodies 12 include a first planting body 12R and a second planting body 12L, and a plurality of planting bodies 12 include a first planting body 12R and a second planting body 12L. The irrigation pump 82 includes a first irrigation pump 82R that supplies water to the first planting body 12R, and a second irrigation pump 82L that supplies water to the second planting body 12L, and the plurality of rotating members 102, The plurality of connection links 103 include a first rotating member 102R corresponding to the first irrigation pump 82R and a second rotating member 102L corresponding to the second irrigation pump 82L. The irrigation drive shaft 112 includes a first connection link 103R that connects the piston 98 of the fifth member, and a second connection link 103L that connects the second rotating member 102L and the piston 98 of the second irrigation pump 82L. The first irrigation pump 82R, the first rotating member 102R, and the first connecting link 103R protrude from the fifth member 110E on one side and the other side in the machine width direction K2, and the first irrigation pump 82R, the first rotating member 102R, and the first connecting link 103R protrude from the fifth member 110E on one side and the other side. The second irrigation pump 82L, the second rotating member 102L, and the second connection link 103L are arranged on the opposite side of the fifth member 110E to the side on which the first irrigation pump 82R is arranged.

The first irrigation pump 82R and the second irrigation pump 82L can be assembled to the pump bracket 110 in a compact manner.
Further, the drive main shaft 71 has a power take-off part 81 different from the power take-off part 80 on the end side opposite to the power take-off part 80 .
According to this configuration, for example, power can be transmitted to various types of equipment separately attached to the transplanter 1 to drive the various types of equipment.

Furthermore, a planting lifting mechanism 167 that lifts and lowers the planting body 12 is provided, and the planting lifting mechanism 167 is rotatably supported by a rotatable first rotating case 201 and a free end side of the first rotating case 201. It has a second rotation case 202 and a support plate 121 that is attached to the free end side of the second rotation case 202 and supports the planting body 12, and the second rotation case 202 is connected to the rotation of the first rotation case 201. By rotating the rotation case 202 in the opposite direction to the first rotation case 201, the planting body 12 can be raised and lowered, and the planting body 12 is provided at a position overlapping with the second rotation case 202 in a side view. There is.

According to this configuration, the planting lifting mechanism 167 and the planting body 12 can be configured compactly.
Further, an irrigation pipe 120 for supplying water sent from the irrigation pump 82 to the planted body 12 is provided, and the irrigation pipe 120 is attached to the support plate 121.
According to this configuration, by attaching the irrigation pipe 120 using the support plate 121, the structure can be simplified.

Further, the transplanting machine 1 of the present embodiment includes a planting machine 4 and a traveling body 5 that is mounted with the planting machine 4 and runs, and the planting machine 4 is used to place seedlings 7 in the field 6. It includes at least one planting body 12 for planting, and a leveling board 299 arranged in front of the planting body 12 to level the planting surface of the field 6.
According to this configuration, by leveling the planting surface of the field 6 with the leveling board 299 arranged in front of the planting body 12, the seedlings 7 can be planted well in the field 6.

In addition, a plurality of planting bodies 12 are provided, and the plurality of planting bodies 12 are a first planting body 12R and a second planting body 12R that are arranged side by side in the machine width direction K2 and whose intervals in the machine body width direction K2 are adjustable. The width W2 of the leveling board 299 in the machine width direction K2, including the body 12L, is when the row spacing W1 of the seedlings 7 planted by the first planting body 12R and the second planting body 12L is set to the maximum row spacing W1b. The width is wider than the distance W3 between the outer ends of the first planting body 12R and the second planting body 12L in the body width direction K2.

According to this configuration, even if the row spacing W1 of the seedlings 7 is adjusted, there is no need to change the position of the leveling board 299 corresponding to the first planting body 12R and the second planting body 12L.
In addition, a work equipment mounting device 123 for mounting the planting work machine 4 on the traveling body 5 so as to be swingable around the rolling axis X1 extending in the machine body longitudinal direction K1, and a work machine mounting device 123 for swinging the planting work machine 4 around the rolling axis X1 extending in the machine body longitudinal direction K1, A rolling mechanism 135 that swings is provided, and the rolling mechanism 135 has a first height H1 of the first planting body 12R with respect to the planting surface of the field 6, and a second height H1 of the second planting body 12L with respect to the planting surface of the field 6. In order to set the height H2 to a predetermined height, the planting machine 4 is swung around the rolling axis X1.

According to this configuration, by swinging the planting work machine 4 around the rolling axis X1, the height of the first planting body 12R with respect to the planting surface and the height of the second planting body 12L with respect to the planting surface can be adjusted. can be set to a predetermined height. Thereby, the planting depth of the seedlings 7 planted by the first planting body 12R and the planting depth of the seedlings 7 planted by the second planting body 12L can be matched.

The control device 131 also includes a control device 131 that controls the rolling mechanism 135, and when the difference in height between the first height H1 and the second height H2 is greater than or equal to a predetermined value when planting the seedlings 7, the control device 131 controls the following: The planting machine 4 is swung around the rolling axis X1 in a direction that reduces the height difference.
Further, it is provided with a plurality of sensing rollers 126 that detect the height of the planting surface of the field 6, and the plurality of sensing rollers 126 are arranged in front of the first planting body 12R and correspond to the first planting body 12R. A first sensing roller 126R detects the height of the planting surface to be planted, and a second sensing roller 126R that is arranged in front of the second planting body 12L and detects the height of the planting surface corresponding to the second planting body 12L. and a sensing roller 126L, and the control device 131 rotates the planting work machine 4 on a rolling axis in a direction that reduces the difference in height based on the detected values detected by the first sensing roller 126R and the second sensing roller 126L. The first sensing roller 126R and the second sensing roller 126L are arranged behind the leveling plate 299, and are oscillated about the center X1.

According to this configuration, the accuracy of height detection by the first sensing roller 126R and the second sensing roller 126L can be improved.
Further, the first sensing roller 126R and the second sensing roller 126L can be spaced apart in the machine body width direction K2 in accordance with the distance adjustment between the first planting body 12R and the second planting body 12L, and the leveling plate 299 The width W2 in the machine width direction K2 is wider than the distance W4 between the outer ends of the first sensing roller 126R and the second sensing roller 126L in the machine width direction K2 when the distance W1 is set to the maximum distance W1b. is formed.

According to this configuration, even if the row spacing W1 of the seedlings 7 is adjusted, there is no need to change the position of the leveling plate 299 corresponding to the first sensing roller 126R and the second sensing roller 126L.
Moreover, the transplanting machine 1 of this embodiment is mounted on the first seedling mounting stand 9R and the second seedling mounting stand 9L on which the seedling tray 8 is placed, and on the first seedling placing stand 9R and the second seedling placing stand 9L. The vertical feeding mechanism 244 is provided across the first seedling mounting table 9R and the second seedling mounting table 9L, and is configured to feed the seedling tray 8 in the vertical direction. A vertical feed main shaft 252 to which vertical feed power is transmitted, and a first vertical feed operating shaft 253R that is provided on the first seedling platform 9R and vertically feeds the seedling tray 8 placed on the first seedling platform 9R. , a second vertical feed operation shaft 253L that is provided on the second seedling platform 9L and vertically sends the seedling tray 8 placed on the second seedling platform 9L, and a first vertical feed axis from the vertical feed main shaft 252. A first longitudinal feed clutch 262R that intermittently transmits power to the operating shaft 253R, and a second longitudinal feed clutch 262L that intermittently transmits power from the vertical feed main shaft 252 to a second longitudinal feed operating shaft 253L. There is.

According to this configuration, the first vertical feed clutch 262R intermittently transmits power from the vertical feed main shaft 252 to the first vertical feed operating shaft 253R, and the first longitudinal feed clutch 262R intermittently transmits power from the vertical feed main shaft 252 to the second longitudinal feed operating shaft 253L. Since it is equipped with a second vertical feed clutch 262L that allows transmission, any of the seedling trays 8 placed on the first seedling tray 9R and the seedling tray 8 placed on the second seedling tray 9L. Only the seedling tray 8 can be driven vertically.

Further, the vertical feed main shaft 252 includes a rotating body 255 to which vertical feeding power is transmitted, and a shaft body 256 that is fixed to the rotating body 255 and is provided across the first seedling platform 9R and the second seedling platform 9L. The first vertical feed actuating shaft 253R has a first input portion 258R that is fitted in the shaft body 256 so as to be relatively rotatable and is adjacent to the rotary body 255, and the first vertical feed clutch 262R is provided on the rotary body 255. a clutch body 264 that is fitted into the first input portion 258R so as to be movable in the axial direction and rotatable integrally with the clutch body 264; Thus, it has a driven meshing part 265 that engages and disengages from the driving meshing part 263.

According to this configuration, it is possible to intermittent the vertical feeding power for vertically feeding the seedling tray 8 placed on the first seedling tray 9R, and also to transmit the power to the second seedling tray 9L. can be formed into
Further, the shaft body 256 is a first shaft 256A on the first seedling mounting table 9R side, a second shaft 256B on the second seedling mounting table 9L side, and a combination body that connects the first shaft 256A and the second shaft 256B. 257.

According to this configuration, the vertical feed main shaft 252 can be easily assembled.
Further, the second seedling rest 9L is arranged side by side with the first seedling rest 9R in the machine width direction K2, and the interval between the second seedling rest 9L and the first seedling rest 9R can be adjusted in the machine width direction K2. has an extended shaft portion 256a protruding from the second seedling rest 9L to the opposite side of the first seedling rest 9R, and the second vertical feed operating shaft 253L is fitted to the extended shaft 256a so as to be relatively rotatable. The second vertical feed clutch 262L has a second input part 258L, which is fitted to the extension shaft part 256a so as to be movable in the axial direction and rotatable integrally with the extension shaft part 256a, and a rotating part 271 attached to the second seedling platform 9L. and a clutch shifter 272 which is fitted into the second input part 258L so as to be movable in the axial direction and rotatable therewith, and which engages and disengages from the rotating part 271 by moving in the axial direction.

According to this configuration, the second vertical feeding clutch 262L can be used to intermittent the vertical feeding power for vertically feeding the seedling tray 8 placed on the second seedling mounting table 9L, and the second vertical feeding clutch 262L can be used to intermittent the vertical feeding power for vertically feeding the seedling tray 8 placed on the second seedling mounting table 9L. It can be formed into a structure that allows adjustment of the interval between the two seedling mounting tables 9L.
Moreover, the first vertical feed clutch 262R is provided on the opposite side of the first seedling mounting table 9R from the second seedling mounting table 9L.

According to this configuration, the first seedling mounting table 9R and the second seedling mounting table 9L can be brought close to each other.
In addition, the transplanting machine 1 of the present embodiment includes a planting machine 4 for planting seedlings 7 in a field 6, a traveling body 5 that runs with the planting machine 4 mounted thereon, and a driver's seat mounted on the traveling body 5. 3, the planting machine 4 includes a mounting plate 10 on which the seedling tray 8 is placed in a downwardly inclined state, and a vertical plate 10 on which the seedling tray 8 is vertically conveyed downward along the mounting plate 10. A feeding mechanism 244, a seedling take-out device 11 that takes out the seedlings 7 from the seedling tray 8 on the mounting plate 10, and a seedling take-out device 11 that inverts the seedling tray 8 after the seedlings 7 have been taken out and removes the seedlings 7 from the seedling tray 8 on the placing plate 10. The traveling body 5 has an inversion guide 13 that guides it to the back side, and an empty tray guide 14 that guides the seedling tray 8 that has been inverted by the inversion guide 13 to the upper back side of the mounting plate 10. It has an empty tray receiving part 15 which is disposed between the tray guide 14 and receives the empty seedling tray 8 sent out from the empty tray guide 14.

According to this configuration, the empty seedling tray 8 sent out from the empty tray guide 14 can be received by the empty tray receiving section 15 provided between the driver's seat 3 and the empty tray guide 14. The tray 8 can be easily collected.
Further, the traveling body 5 has a front step 29a on which the operator's feet are placed in front of and below the driver's seat 3, and the empty tray receiving section 15 is arranged above the front step 29a and below the driver's seat 3. ing.

According to this configuration, the empty tray receiving section 15 can be arranged at a position where the operator can easily retrieve it from the driver's seat 3 side.
Further, the empty tray guide 14 has an upper guide portion 14c located above the empty tray receiving portion 15 and extending toward the driver's seat 3 side.
According to this configuration, the empty seedling tray 8 sent out from the empty tray guide 14 can be guided to the empty tray receiving part 15 by the upper guide part 14c.

Further, the upper guide portion 14c has an inclined shape that moves downward toward the front.
According to this configuration, the empty seedling tray 8 can be well guided to the empty tray receiving part 15 by the upper guide part 14c.
Further, the rear end portion of the empty tray receiving portion 15 is located below the front end portion of the upper guide portion 14c.

According to this configuration, it is possible to suppress the empty seedling tray 8 from falling from between the empty tray receiving part 15 and the empty tray guide 14.
Furthermore, the empty tray receiving section 15 has at least one rear step 33 on which the operator rests his/her feet.
According to this configuration, by stepping on the rear step 33, the seedling tray 8 can be easily replenished onto the placing plate 10. Further, by using the rear step 33 as the empty tray receiving portion 15, the member can be used for multiple purposes.

Moreover, the planting work machine 4 has a plurality of seedling mounting tables 9 including a mounting plate 10, a vertical feeding mechanism 244, a reversing guide 13, and an empty tray guide 14, and the plurality of seedling mounting tables 9 are arranged in the machine width direction K2. The empty tray receiving part 15 is provided corresponding to the front of the first seedling mounting table 9R and the second seedling mounting table 9L, which are arranged side by side. There is.
According to this configuration, empty seedling trays 8 discharged from a plurality of seedling platforms 9 can be easily collected.

Moreover, the empty tray receiving part 15 has a plurality of rear steps 33 on which the operator steps, and the plurality of rear steps 33 include a first rear step 33R disposed in front of the first seedling platform 9R, It includes a second rear step 33L arranged in front of the second seedling mounting table 9L.
According to this configuration, by providing the rear step 33 corresponding to the first seedling rest 9R and the second seedling rest 9L, the seedling tray 8 for each of the first seedling rest 9R and the second seedling rest 9L is provided. can be easily replenished.

Although one embodiment of the present invention has been described above, the embodiment disclosed this time should be considered to be illustrative in all respects and not restrictive. The scope of the present invention is indicated by the claims rather than the above description, and it is intended that all changes within the meaning and range equivalent to the claims are included.

3 Driver's seat 4 Planting machine 5 Traveling body 6 Field 7 Seedlings 9 Seedling stand 9R First seedling stand 9L Second seedling stand 10 Placement plate 11 Seedling take-out device 13 Reversing guide 14 Empty tray guide 14c Upper guide part 15 Empty tray receiving part 29a Front step 33 Rear step 33R 1st rear step 33L 2nd rear step 244 Vertical feed mechanism K2 Machine width direction

Claims (8)

A planting machine that plants seedlings in the field,
A traveling body that runs with the planting machine attached thereto;
a driver's seat that is mounted on the traveling body and has a seat where an operator is seated;
Equipped with
The planting machine is
a mounting plate on which the seedling tray is placed in a downwardly inclined state;
a vertical feeding mechanism that vertically feeds the seedling tray downward along the placement plate;
a seedling take-out device that takes out the seedlings from the seedling tray on the placement plate;
a reversing guide for reversing the seedling tray after the seedlings have been taken out by the seedling retrieving device and guiding it to the back side of the placing plate;
an empty tray guide including a guide main body portion that guides the seedling tray reversed by the reversing guide to the upper rear surface of the placing plate;
The traveling body includes an empty tray receiver disposed between the driver's seat and the empty tray guide arranged at a distance behind the driver's seat to receive the empty seedling tray sent out from the empty tray guide. has a department;
The upper part of the guide main body is located above the lower end of the driver's seat and behind the rear end of the empty tray receiving part,
The empty tray receiving portion is disposed below the lower end of the driver's seat and extends rearward from the driver's seat toward the empty tray guide,
The empty tray guide has an upper guide part at the upper part from which the empty seedling tray is sent out,
The upper guide part extends from the upper part of the guide main body part toward the driver's seat so that the front end part of the upper guide part is arranged at a height position corresponding to the position of the vertical midway part of the seat part. extending forward to a position above the rear end of the empty tray receiving part ,
The distance in the vertical direction between the front end of the upper guide part and the rear end of the empty tray receiving part is such that the seedling tray is placed between the front end of the upper guide part and the rear end of the empty tray receiving part. A transplanter with a distance that allows multiple sheets to be placed one on top of the other . The traveling body has a front step in front of and below the driver's seat, on which the operator's feet are placed.
The transplanter according to claim 1, wherein the empty tray receiving section is arranged above the front step. The transplanter according to claim 1 or 2, wherein the upper guide portion extends forward and downward in a direction from the upper portion of the guide main body portion toward the vicinity of a lower rear end of the driver's seat. The traveling body has a floor seat disposed below the driver's seat and including the front step,
The floor sheet has an extension portion provided at a rear part of the floor sheet and at a higher position than the front step,
The transplanter according to claim 2, wherein the empty tray receiving section includes the extending section. The empty tray receiving section has at least one rear step on which an operator rests, the rear step being arranged behind the extending section and at approximately the same height as the extending section. The transplanting machine according to claim 4. The transplanting machine according to any one of claims 1 to 4, wherein the empty tray receiving section has at least one rear step on which an operator rests his/her feet. The planting machine has a plurality of seedling platforms including the placement plate, the vertical feeding mechanism, the reversing guide, and the empty tray guide,
The plurality of seedling platforms include a first seedling platform and a second seedling platform arranged side by side in the width direction of the machine,
7. The transplanting machine according to claim 1, wherein the empty tray receiving section is provided in front of the first seedling mounting table and the second seedling mounting table. The empty tray receiving section has a plurality of rear steps on which an operator places his/her feet,
The transplant according to claim 7, wherein the plurality of rear steps include a first rear step disposed in front of the first seedling platform and a second rear step disposed in front of the second seedling platform. Machine.

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