JP7301617B2 - transplanter - Google Patents

Description

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

Conventionally, a transplanter disclosed in Patent Document 1 is known.
The transplanter disclosed in Patent Literature 1 includes a planting machine attached to a running body. A planting machine has a planting body for planting seedlings in a field.

JP-A-2000-139117

By the way, in flat furrows that have been plowed by a rotary tiller or the like, the gaps (joints) between adjacent plowing tracks are raised. When seedlings are planted in this joint, there is a problem that the seedlings are buried.
Therefore, in view of the above problems, an object of the present invention is to provide a transplanter capable of planting seedlings in a field satisfactorily.

A transplanter according to an aspect of the present invention includes a planting machine and a traveling body mounted with the planting machine, and the planting machine carries a plurality of seedlings for planting seedlings in a field. and a leveling plate disposed in front of the plurality of planting bodies and leveling the planting surface of the field, wherein the plurality of planting bodies are arranged side by side in the width direction of the machine body. The interval in the width direction is adjustable, and the leveling board is provided so as to extend over the plurality of planting bodies, and the width of the leveling board in the body width direction of the body is the same as that of the seedlings planted by the plurality of planting bodies. A width wider than the distance between the outer ends in the body width direction of the planted body at one end of the plurality of planted bodies in the body width direction and the planted body at the other end when the row spacing is set to the maximum row spacing is formed in

Further, the transplanter includes a planting machine, a traveling body mounted with the planting machine, and a rolling body extending the planting machine on the traveling body in the longitudinal direction of the machine body. and a rolling mechanism for rocking the planting machine around the rolling axis . The planting machine includes a plurality of planting bodies for planting seedlings in a field. and a leveling plate disposed in front of the planting body for leveling the planting surface of the field, wherein the plurality of planting bodies are arranged side by side in the width direction of the machine body, and A second planting body is included, the leveling plate is provided so as to extend over the first planting body and the second planting body, and the rolling mechanism is adapted to perform the first planting on the planting surface of the field. The planting machine is swung about the rolling axis so that the first height of the body and the second height of the second planting body relative to the planting surface are at predetermined heights.

Further, a control device for controlling the rolling mechanism is provided, and the control device controls the height difference between the first height and the second height when the seedling is planted and the height difference between the first height and the second height is equal to or greater than a predetermined height. The planting work machine is swung around the rolling axis in a direction to reduce the difference between the two.
Further, a plurality of sensing rollers for detecting the height of the planting surface of the field are provided, and the plurality of sensing rollers are arranged in front of the first planting body and correspond to the first planting body. a first sensing roller for detecting the height of the planting surface; and a second sensing roller positioned in front of the second planting body for detecting the height of the planting surface corresponding to the second planting body. and the control device rotates the planting machine around the rolling axis in a direction to reduce the height difference based on the detection values detected by the first sensing roller and the second sensing roller. The first sensing roller and the second sensing roller are arranged behind the leveling plate.

Further, the transplanter includes a planting machine, a traveling body mounted with the planting machine, and a plurality of sensing rollers for detecting the height of a planting surface in a field. The work machine includes a plurality of planting bodies for planting seedlings in a field, and a leveling plate disposed in front of the planting bodies for leveling the planting surface of the field, wherein the plurality of planting bodies are , a first planting body and a second planting body arranged side by side in the body width direction and adjustable in space in the body width direction, wherein the leveling plate comprises the first planting body and the second planting body said plurality of sensing rollers extending across the body, said plurality of sensing rollers being disposed in front of said first planting body and detecting the height of the planting surface corresponding to said first planting body; , a second sensing roller positioned in front of said second planting body for sensing the height of the planting surface corresponding to said second planting body, said first sensing roller and said second sensing roller. The rollers are adjustable in the width direction of the machine body according to the adjustment of the distance between the first planted body and the second planted body, and the width of the leveling plate in the machine body width direction is the same as that of the first planted body. A width wider than the distance between the outer ends in the body width direction of the first sensing roller and the second sensing roller when the distance between the rows of the seedlings planted with the second planting body is set to the maximum distance between rows. formed.

According to the above configuration, by leveling the planting surface of the field with the leveling plate arranged in front of the planting body, the seedlings can be planted well in the field.

1 is a schematic side view of a transplanter; FIG. 1 is a schematic plan view of a transplanter; FIG. It is a side view of an airframe. It is a side view which shows the movement path|route of a seedling tray, and an empty tray receiving part. 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. 4 is a plan view of the main frame; FIG. It is a side view of a main frame. 4 is a rear view of the mainframe; FIG. 1 is a plan view of an implantation unit; FIG. FIG. 4 is a rear view showing front side support of the unit frame; FIG. 4 is a plan view showing rear side support of the unit frame; FIG. 4 is a side view showing rear side support of the unit frame; FIG. 4 is a side view of a power input section that inputs power to a driving main shaft; It is a top view of a power input part. FIG. 4 is a side view of an irrigation pump and an irrigation transmission mechanism; FIG. 4 is a plan 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 rear view which shows the discharge route from an irrigation pump. It is a side view which shows a working machine mounting apparatus. FIG. 4 is a rear view of the support structure for the mainframe; FIG. 4 is a rear view of the rolling mechanism; FIG. 4 is a side view of the rolling mechanism; FIG. 4 is a side view of the support structure for the sensing roller; FIG. 4 is a rear view of the support structure for the sensing roller; FIG. 4 is a rear view of the support structure for the sensing roller; FIG. 4A is a plan view of a first implantation unit and a second implantation unit; It is a side view which shows a planting depth adjustment mechanism and a planting raising/lowering mechanism. It is a rear view which shows a planting depth adjustment mechanism. It is a side view which shows an earth covering pressure adjustment mechanism. It is a top view which shows an operation part. It is a top view which shows a planting raising/lowering mechanism. It is a side view of a planting raising/lowering mechanism. It is a side view which shows the attachment part of an irrigation pipe. It is the rear view which carried out the partial cross section which shows the attachment part of an irrigation pipe. It is a top view which shows a main frame and a seedling platform. 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 base and a 2nd seedling mounting base. It is a side view of the lower part of a seedling platform. It is a rear view which shows a lateral feed mechanism. It is a side view which shows a tray feed mechanism and a seedling extraction apparatus. It is a back sectional view showing a longitudinal feed drive mechanism. It is a rear cross-sectional view showing the right side of the vertical feed drive mechanism. It is a figure which shows the left side of a vertical feed drive mechanism. It is a side view which shows a vertical feed operation mechanism. FIG. 4 is a plan view showing a tray pressing mechanism; It is a side view which shows a tray pressing mechanism. It is a rear view which shows a tray pressing mechanism. It is a side view which shows a 1st pressing mechanism. It is a side view which shows a 2nd pressing mechanism. FIG. 4 is a side view of the main frame with a leveling plate attached; FIG. 4 is a rear view of the main frame with a leveling plate attached; FIG. 4 is a side view of the leveling plate and mounting portion; It is a rear view of the mounting portion of the leveling plate.

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. FIG.
As shown in FIG. 1, the transplanter 1 is a riding transplanter (riding transplanter) having a driver's seat 3 on which an operator (driver) 2 sits.

As shown in FIGS. 1 and 2, the transplanter 1 has 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. Therefore, the transplanter 1 is a machine for planting the seedlings 7 in the field 6 with the planting machine 4 while traveling in the field 6 with the traveling body 5 .
In the embodiment of the present invention, the front direction of the operator 2 seated on the driver's seat 3 of the transplanter 1 (direction of arrow A1 in FIGS. 1 and 2) is forward, and the rear direction of the operator 2 (FIG. 1 and FIG. 2) is referred to as the rear. Further, the direction of arrow K1 in FIGS. 1 and 2 is referred to as the longitudinal direction of the fuselage. Furthermore, the right side of the operator 2 (the direction of the arrow B1 in FIG. 2) will be described as the right side, and the left side of the operator 2 (the direction of the arrow B2 in FIG. 2) will be described as the left side.

Further, as shown in FIG. 2, the horizontal direction perpendicular to the longitudinal direction K1 of the fuselage will be described as the width direction K2 of the fuselage. A direction toward the right or left from the central portion in the width direction of the fuselage will be described as the outward direction of the fuselage. In other words, the outer side of the fuselage is the width direction K2 of the fuselage and the direction away from the center in the width direction of the fuselage. The direction opposite to the outer side of the fuselage will be described as the inner side of the fuselage. In other words, the inward direction of the fuselage is the width direction K2 of the fuselage and the direction toward the center of the fuselage in the width direction.

First, the outline|summary is demonstrated about the working machine 4 with planting.
As shown in FIG. 1, the planting machine 4 has a seedling placement 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, is thin and 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 a predetermined pitch in a grid pattern. The opening edges of the pot portion 8a are connected by a flat upper surface wall 8b. The pot portion 8a protrudes rearward from the top wall 8b. In the seedling tray 8, seedlings 7 (soil block seedlings) are grown by supplying bed soil to the pot portion 8a, seeding the bed soil, and raising 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 in which the seedling tray 8 moves backward as it goes downward). As shown in FIG. 1, the seedlings 7 on the seedling tray 8 are picked up one by one by a seedling picking device 11 arranged behind the seedling mounting table 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. Also, the planting body 12 rushes into the field 6 and plants the seedlings 7 when descending. More 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 seedling 7 inside and moves downward, and when it rushes into the field 6, it opens back and forth to open the field. A planting hole is formed in 6 and a seedling 7 is dropped and planted in the planting hole. 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 can mount a plurality of seedling trays 8 arranged vertically along the direction of inclination. The seedling tray 8 is arranged with its longitudinal direction aligned with the direction of inclination. The seedling picking device 11 picks up the seedlings 7 from the lowest seedling tray 8 ( 8 A) among the plurality of seedling trays 8 placed on the mounting plate 10 . Further, the seedling picking device 11 picks up the seedlings 7 one by one from the seedling tray 8 while intermittently laterally feeding the seedling placing table 9 in the width direction K2 of the machine body by one pitch of the pot portion 8a. When a row of seedlings 7 is taken out from the seedling tray 8, the seedling tray 8 is longitudinally fed downward along the inclination direction by one pitch of the pot portion 8a. As a result, the next row of seedlings 7 can be taken out. After that, the seedling tray 9 is laterally fed in the opposite direction to take out the seedlings 7, and when the seedlings 7 in a horizontal row are taken out, the seedling tray 8 is longitudinally fed. All the seedlings 7 are taken out from the seedling tray 8 by repeating this step by step.

As shown in FIG. 3, the seedling placement table 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 picking device 11 is vertically fed 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 rear side (lower side) 10A of the placing plate 10 . Also, the seedling placement table 9 has an empty tray guide 14 on the back side of the placement plate 10 . The empty tray guide 14 has a curved portion 14a at its lower portion. The curved portion 14 a receives the seedling tray 8 from the reversing guide 13 and guides it to the guide body portion 14 b arranged on the back side of the placing plate 10 . The empty seedling tray 8 is guided to the top of the rear surface of the placing plate 10 by the guide body portion 14b. The empty tray guide 14 has an upper guide portion 14c at its upper portion. The upper guide portion 14c extends forward from the upper end of the guide body portion 14b toward the driver's seat 3 side. In addition, the upper guide portion 14c is formed in a shape that slopes slightly forward (a shape that slopes downward toward the front). An empty seedling tray 8 can be removed from the upper guide portion 14c.

Next, the traveling body 5 will be described 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 machine body 16 on which the driver's seat 3 is mounted, and a traveling device 17 that supports the machine body 16 so as to be able to travel. The fuselage 16 has a prime mover 18 , a prime mover frame 19 , a transmission case 20 and a fuselage frame 21 . Prime mover 18 is, for example, a diesel engine. The prime mover 18 is arranged in front of the traveling body 5 . The prime mover frame 19 is arranged below the prime mover 18 and supports the prime mover 18 . The transmission case 20 is arranged behind the prime mover 18 and accommodates a transmission mechanism that changes the speed of power output from the prime mover 18 . A motor frame 19 is connected to the front portion of the transmission case 20 . The body frame 21 is arranged behind the mission case 20 . In other words, the body frame 21 is arranged at the rear portion of the traveling body 5 . A transmission case 20 is connected to the front part of the body frame 21 . The fuselage frame 21 has a support 22 at the rear. A driver's seat 3 is attached to the support 22 via a seat attachment member 31 .

The driver's seat 3 is arranged at the rear part 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 (on which the buttocks and thighs are placed). The backrest portion 3B is a portion on which the seated operator 2 rests the back, and is provided so as to extend upward at the rear portion of the seat portion 3A.
As shown in FIGS. 1 and 2, the traveling device 17 is a wheeled traveling device having left and right front wheels 23 and left and right rear wheels 24 in this embodiment. The front wheels 23 and the rear wheels 24 are rotated by power transmitted from the transmission case 20 .

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

As shown in FIG. 1, on the side of the bonnet 26, a spare seedling stand 28 is arranged on which a seedling tray 8 having seedlings 7 is placed. The spare seedling stand 28 has seedling placement portions 28A in multiple stages, and is provided on the left side and the right side of the bonnet 26.例文帳に追加The operator 2 can take out the seedling tray 8 from the spare seedling stand 28 and supply it to the planting work machine 4 (seedling placing 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 . The floor seat 29 has a front step 29a on which the feet of the operator 2 seated in the driver's seat 3 are placed. The front step 29 a is arranged in front of and below the driver's seat 3 . A transmission case 20 is arranged below the front step 29a. A seat base cover 30 is provided behind the front step 29a and below the driver's seat 3 to cover a portion 22A (see FIG. 4) of the support 22 where the driver's seat 3 is supported.

As shown in FIGS. 1 to 5, an empty tray receiving portion 15 capable of receiving an empty seedling tray 8 sent out from an empty tray guide 14 is provided behind 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 placing table 9. - 特許庁In other words, the empty tray receiving portion 15 is provided between the driver's seat 3 and the empty tray guide 14 (seedling placement table 9). As a result, 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 placement table 9). The empty tray receiving portion 15 is provided above the front step 29 a and below the driver's seat 3 . Therefore, the empty tray receiving portion 15 is provided at a height that can satisfactorily receive the empty seedling tray 8 sent out from the empty tray guide 14 . Further, since the upper guide portion 14c is formed in a downwardly inclined shape and extends toward the empty tray receiving portion 15, the empty seedling tray 8 can be sent out to the empty tray receiving portion 15 satisfactorily. Also, the rear end of the empty tray receiving portion 15 is positioned below the upper rear end 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 each other in plan view. As a result, 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 emptied. It can be received by the tray receiving portion 15 .

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

The multiple rear steps 33 include a first rear step 33R and a second rear step 33L. The first rear step 33R is arranged behind the right portion of the extending portion 32, and the second rear step 33L is arranged behind the left portion of the extending portion 32. As shown in FIG. 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.

As shown in FIG. 3, the step frame 34 has first to third frame members 34A to 34C. The first frame member 34A is arranged between the rear step 33 and the extending portion 32 so as to extend in the machine body width direction K2. The second frame member 34B has a lower portion fixed to the body frame 21 and an upper portion fixed to the first frame member 34A. The third frame member 34C protrudes rearward from the first frame member 34A. The third frame member 34C is arranged on the lower surface side of the rear step 33 and supports the rear step 33 from below. 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 mounting table 9. - 特許庁Therefore, the operator 2 can put his/her foot on the rear step 33 when supplying (replenishing) the seedling tray 8 to the seedling placing table 9, and by putting his/her foot on the rear step 33, replenishment of the seedling tray 8 is facilitated. can be done
As shown in FIGS. 2 and 5, the planting machine 4 of the present embodiment has two (plurality) seedling mounts 9, one seedling mount 9 (first seedling mount 9R ), and the second rear step 33L is arranged in front of the other seedling platform 9 (second seedling platform 9L).

The first rear step 33R and the second rear step 33L may be formed continuously. Also, the rear step 33 may be configured by one member. Moreover, when the number of the seedling mounting bases 9 is one, one rear step 33 is provided. When the number of seedling platforms 9 is three or more, the number of rear steps 33 corresponding to the number of seedling platforms 9 may be provided. may be provided.

Next, the work machine 4 with planting is demonstrated in detail.
As shown in FIGS. 1 and 2 , the planting machine 4 has a transplant frame 36 . As shown in FIG. 2 , the implant frame 36 has a main frame 37 and a plurality of unit frames 38 . The multiple 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 has first to twelfth frames 39 to 50. As shown in FIGS. The first frame 39 is arranged in front of the main frame 37 . The first frame 39 has a first support section 39a on the right side, a second support section 39b on the left side, and a connecting section 39c that connects the upper portions of the first support section 39a and the second support section 39b. The first strut portion 39a and the second strut portion 39b are bent forward in the middle in the vertical direction. More specifically, the first support section 39a and the second support section 39b are formed such that the lower portion thereof is linear in the vertical direction and the upper portion thereof is formed in a slanted shape that shifts forward as it goes upward. The lower portion of the second support portion 39b protrudes downward from the lower end of the first support portion 39a.

The second frame 40 is arranged to extend in the body width direction K2 below the first support section 39a and the second support section 39b. A lower end of the second strut portion 39 b is connected to the second frame 40 . The right portion of the second frame 40 protrudes to the right from the first strut portion 39a, and the left portion protrudes to the left from the second strut portion 39b. The third frame 41 connects the lower portion of the first support section 39 a and the second frame 40 .

The fourth frame 42 protrudes rearward from the middle 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 the vertical middle portion of the first support portion 39a and protrudes rightward from the first support portion 39a. The middle to 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 portion of the second support section 39b and protrudes leftward from the second support section 39b. The middle to 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 a sloping shape that shifts upward as it goes rearward from the middle portion to the rear portion, and the rear end portion is connected to the third portion 42 c 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 a sloping shape that shifts upward as it goes rearward from the middle portion to the rear portion, and the rear end portion is connected to the third portion 42 c of the fourth frame 42 .

The seventh frame 45 connects the first portion 42 a and the second portion 42 b of the fourth frame 42 . Specifically, the front portion of the first portion 42a on the inboard side (left portion) and the front portion of the second portion 42b on the inboard side (right portion) are connected.
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 portion of the first portion 42a in the front-rear direction of the body and a connecting piece 51L fixed to the middle portion of the second portion 42b in the front-rear direction of the body. there is

The ninth frame 47 connects the lower portion of the second support section 39b and the third frame 41 .
The tenth frame 48 is arranged substantially in 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 portion of the main frame 37 in the machine width direction K2 with a gap therebetween 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 hooking stay 52R is provided on the top of the first column portion 39a, and a second spring hooking stay 52L is provided on the top of the second column portion 39b.
A fixing plate 53 is provided above between the eleventh frame 49 and the twelfth frame 50 . A rolling shaft 54 is attached to the fixed plate 53 so as to protrude forward. The rolling shaft 54 has a rolling axis X1 extending in the longitudinal direction K1 of the fuselage. The rolling shaft 54 is arranged substantially 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 steel member and is open rearward. 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 body width direction K2 is arranged on the front side of the eighth frame 46 . The second rail 58 is formed of a channel steel member and opens forward. 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 portion 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 portion of the main frame 37 . The multiple 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 portion of the third portion 42c of the fourth frame 42, and the second connection plate 61 is fixed to the left portion of the third portion 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. As shown in FIG. Specifically, the first unit frame 38R and the second unit frame 38L are arranged between the first portion 42a and the second portion 42b of the fourth frame 42, and the first unit frame 38R is located between the first portion 42a and the first portion 42a. and the second portion 42b, and the second unit frame 38L is arranged on the left side between the first portion 42a and the second portion 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 provided with a seedling picking device 11, a planting body 12, and a covering soil wheel (grounding roller) 62, respectively.
A plurality of seedling extracting devices 11 are provided, and the plurality of seedling extracting devices 11 includes a first seedling extracting device 11R provided on the first unit frame 38R and a second seedling extracting device 11L provided on the second unit frame 38L. including.

A plurality of planted bodies 12 are provided, and the plurality of planted bodies 12 includes a first planted body 12R provided on the first unit frame 38R and a second planted body 12L provided on the second unit frame 38L. including. The first planting body 12R constitutes a part of a first planting device 35R (see FIG. 28) for planting the seedlings 7 picked up by the first seedling picking device 11R in the field 6. As shown in FIG. The second planting body 12L constitutes a part of a second planting device 35L (see FIG. 28) for planting the seedlings 7 picked up by the second seedling picking device 11L in the field 6. As shown in FIG.

The soil covering wheel 62 includes a first soil covering wheel 62R provided on the first unit frame 38R and a second soil covering wheel 62L provided on the second unit frame 38L. Two each of the first covering earth ring 62R and the second covering earth ring 62L are provided. The two first covering soil wheels 62R are arranged side by side in the body width direction K2. The two second covering soil wheels 62L are also arranged side by side in the body width direction K2. The first covering soil 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 edges of the seedlings 7 with soil. Suppress the stock market. The second covering soil ring 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 bury the seedlings 7 near the roots. Suppress the stock market.

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

As shown in FIGS. 11 and 12, the first unit frame 38R has a rectangular frame main body 64 in a plan view. The frame main body 64 connects the front portions of the first side frame 65A and the second side frame 65B to the first side frame 65A and the second side frame 65B that are arranged facing each other with a gap in the width direction of the machine body. A front frame 66 (referred to as a first front frame), a rear frame 67 connecting the front portions of the first side frame 65A and the second side frame 65B, and the first side frame arranged 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 on the front portion of each frame main body 64, and are spaced apart in the machine body width direction K2. The first unit bracket 69 and the second unit bracket 70 have their upper portions fixed to the first front frame 66 and the second front frame 68 and protrude downward from the frame main 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, the driving main shaft 71 is arranged extending in the body width direction K2 at the front portions of the first unit frame 38R (first transplanting unit 63R) and the second unit frame 38L (second transplanting unit 63L). It is Further, the driving main shaft 71 is provided on the front portion of the main frame 37 so as to extend in the machine body width direction.
Front portions of the first unit frame 38R and the second unit frame 38L are supported by the driving main shaft 71 so as to be movable in the body width direction K2. Specifically, the driving main shaft 71 has an axial center extending in the body width direction K2 and is provided from the front portion of the fifth frame 43 to the front portion of the sixth frame 44 . The drive main shaft 71 is rotatably supported by the first support bracket 59 via a bearing 72 on the left side and rotatably supported by the second support bracket 60 on the right side by a bearing 73 . The first unit frame 38R and the second unit frame 38L are arranged above the driving main shaft 71. As shown in FIG. The drive shaft 71 is inserted through the lower portions of the first unit bracket 69 and the second unit bracket 70 of the first unit frame 38R and the second unit frame 38L, and is provided in the first unit bracket 69 and the second unit bracket 70. It is rotatably supported by a bearing 74 provided. Thereby, the front portions of the first unit frame 38R and the second unit frame 38L are supported by the driving main shaft 71 so as to be movable in the machine width direction K2.

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

By adjusting the positions of the first unit frame 38R and the second unit frame 38L in the body width direction K2, the space between the first planting body 12R and the second planting body 12L in the body width direction K2 (first planting A 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-to-row display portion 79 is provided on the first connection plate 61R and the second connection plate 61L. The row-to-row display portion 79 has a number indicating the row-to-row distance W1. By aligning the indicator 78 with the number on the row-to-row display portion 79, the row-to-row distance W1 can be easily adjusted.

As shown in FIGS. 11 and 12, the driving main shaft 71 has a power take-off portion (referred to as a first power take-off portion) 80 for taking out power on the end side in the body width direction K2. The first power take-off portion 80 is provided on the left end portion side of the driving main shaft 71 . The power transmitted from the first power take-off part 80 can drive the irrigation pump 82 arranged in front of the first power take-off part 80 . Further, the driving main shaft 71 has another power take-off portion (referred to as a second power take-off portion) different from the first power take-off portion 80 on the end side opposite to the first power take-off portion 80 (right end side). 81. The 2nd power takeoff part 81 can transmit power to various kinds of equipment attached as an option to work machine 4 with planting, for example, and can drive the various kinds of equipment. The first power take-off portion 80 and the second power take-off portion 81 are formed with, for example, splines (or key grooves, etc.), and by spline coupling (or key coupling, etc.) of the transmission members, the driving main shaft 71 is Power can be taken out from the first power take-off portion 80 and the second power take-off portion 81 .

As shown in FIG. 12, an input sprocket 83, which is an input member for inputting rotational power to the driving main shaft 71, is provided on the central side of the driving main shaft 71 so as to be integrally rotatable. The input sprocket 83 is supported by a bearing 84 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 driving main shaft 71, and FIG. 16 shows a plan view of a part of the power input section 86 developed.

As shown in FIGS. 15 and 16 , the power input section 86 has an input shaft 87 , a gear transmission mechanism 88 , and a winding transmission mechanism 89 including the input sprocket 83 .
As shown in FIG. 1 , power is transmitted to the input shaft 87 from a PTO shaft (power take-off shaft) projecting rearward from the transmission case 20 . Specifically, a first joint shaft 92 is interlocked with the PTO shaft 90 via a planting clutch (clutch between plants) 91 , and a second joint shaft 93 is interlocked with the first joint shaft 92 . The second joint shaft 93 is interlocked with the input shaft 87 . The planted clutch 91 intermittently transmits the power output from the PTO shaft 90 to the input shaft 87 . When the planting clutch 91 is disconnected, the operation of the planting body 12, the seedling picking device 11, etc. is stopped, and when it is connected, the operation of the planting body 12, the seedling picking device 11, etc. is restarted. Therefore, by adjusting the disconnection time of the planting clutch 91, the seedlings 7 can be planted between predetermined stocks.

As shown in FIGS. 15 and 16, the gear transmission mechanism 88 has a first bevel gear 88A fitted to the input shaft 87 so as to rotate integrally therewith, and a second bevel gear 88B which 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 that transmits power from the first transmission sprocket 94, and a second transmission sprocket 95 that transmits power. and a third transmission sprocket 96 which is connected. 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 according to the number of planted 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 in front of the first power take-off portion (power take-off portion) 80 and vertically inward of the body from the end of the main frame 37 in the body width direction K2. In this embodiment, the plurality of irrigation pumps 82 includes a first irrigation pump 82R that supplies water to the first planted body 12R and a second irrigation pump 82L that supplies water to the second planted body 12L. The irrigation pump 82 is formed by a reciprocating pump having a cylinder 97 and a piston 98 reciprocating within the cylinder 97 . The cylinder 97 has a vertical axis. Therefore, the piston 98 reciprocates vertically.

Power is transmitted to the irrigation pump 82 by the irrigation transmission mechanism 99 from the first power take-off portion 80 . The irrigation transmission mechanism 99 has a first irrigation sprocket 100 , a second irrigation sprocket 101 , a rotating member 102 and a connecting link 103 . The first irrigation sprocket 100 is attached to the first power take-off part 80 so as to be able to rotate integrally 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 the chain 104 .

A plurality of rotating members 102 are provided according to the number of irrigation pumps 82 . The plurality of rotating members 102 includes 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 together with the second watering sprocket 101. As shown in FIG.
A plurality of connection links 103 are provided according to the number of irrigation pumps 82 . A plurality of connecting links 103 connect the first rotating member 102R and the piston 98R of the first irrigation pump 82R, and the second rotating 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 deviated from the rotation axis X2 of the first rotating member 102R. A bearing 107R provided at one end of the link 103R is rotatably fitted. A bifurcated first connector 108R is provided at the other end of the first connection link 103R, and this first connector 108R pivots on a connection stay 109R provided below the piston 98R of the first water pump 82R. It is supported and connected. Rotation of the first rotating member 102R pulls down and pushes up the piston 98R via the first connecting link 103R to drive the first watering pump 82R.

The second connecting link 103L has one end connected to the second rotating member 102L at a position deviated 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 deviated from the rotation axis X2 of the second rotating member 102L, and a second connecting pin 106L is attached to the second connecting pin 106L. A bearing 107L provided at one end of the link 103L is rotatably fitted. A bifurcated second connector 108L is provided at the other end of the second connection link 103L, and this second connector 108L pivots on a connection stay 109L provided below the piston 98L of the second irrigation pump 82L. It is supported and connected. The rotation of the second rotating member 102L pulls down and pushes up the piston 98L via the second connecting link 103L to drive the second irrigation pump 82L.

The irrigation pump 82 and the irrigation transmission mechanism 99 are attached to a pump bracket 110 provided on the main frame 37 . Pump bracket 110 has first member 110A to 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 top of the first member 110A. The third member 110C has a lower portion fixed to the front portion of the second member 110B and protrudes upward from the second member 110B. The fourth member 110D is fixed above 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 portion of the third member 110C. The fifth member 110E is formed in a tubular shape having an axis extending in the body width direction K2.

The irrigation pump 82 is arranged on the side of the third member 110C and has its upper portion 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 machine width direction K2. The second irrigation sprocket 101L and the rotary member 102 are attached to the irrigation drive shaft 112 so as to be integrally rotatable. More 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 with the protruding portion of the irrigation drive shaft 112 on one side by spline coupling or the like. The second tubular member 113L is coupled to the protruding portion on the other side of the irrigation drive shaft 112 by spline coupling or the like so as to be integrally rotatable. The first rotating member 102R is fixed to the first cylindrical member 113R, and the second watering sprocket 101 and the second rotating member 102L are fixed to the second cylindrical member 113L.

A pump head 111R of the first irrigation pump 82R and a pump head 111L of the second irrigation pump 82L are provided with a suction portion 114 and a discharge portion 115 . As the piston 98 reciprocates up and down, water is sucked from the suction portion 114 and the sucked water is discharged from the discharge portion 115 . The suction part 114 is provided at the front part of the pump head 111R and the pump head 111L. The discharge part 115 is provided in the rear part 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 irrigating the seedlings 7 is arranged in front of the traveling body 5 . A plurality of irrigation tanks T are provided. The plurality of irrigation tanks T includes 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 fuselage of the first irrigation tank T1 and below the first irrigation tank T1. The first irrigation tank T<b>1 and the second irrigation tank T<b>2 are supported by the fuselage 16 via the first tank bracket 116 . The fourth irrigation tank T4 is arranged outside the third irrigation tank T3 and below the third irrigation tank T3. Also, the third irrigation tank T3 and the fourth irrigation tank T4 are supported by the fuselage 16 via the 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 portion 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 part 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 planted body 12R. A second irrigation pipe 120L (irrigation pipe 120) is arranged on the upper side of the second planting body 12L. The discharge portion 115 of the first irrigation pump 82R is connected to the first irrigation pipe 120R via the discharge hose 122R, and the discharge portion 115 of the second irrigation pump 82L is connected to the second irrigation pipe 120L via the discharge hose 122L. It is Therefore, the water discharged from the first irrigation pump 82R is supplied to the first planted body 12R, and the water discharged from the second irrigation pump 82L is supplied to the second planted body 12L.

The first irrigation pipe 120R is attached to the support plate 121R (support plate 121) that supports the first planted body 12R, and the second irrigation pipe 120L is attached to the support plate 121L (support plate 121) that supports the second planted body 12L. 121).
As shown in FIGS. 1 and 21 , the main frame 37 (planting work machine 4 ) is attached to the traveling body 5 via the work machine mounting device 123 . The work machine mounting device 123 has a mounting frame 124 for detachably mounting the main frame 37 (planting work machine 4), and a work machine lifting mechanism 125 for lifting and lowering 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 can swing 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 across the rolling axis X1.
The working machine elevating mechanism 125 has a connecting link mechanism 129 that connects the traveling body 5 and the mounting frame 124, and an elevating driving body 130 that drives the planting working machine 4 up and down.

The connecting link mechanism 129 is composed of parallel links and has an upper link 129A and a lower link 129B arranged below the upper link 129A. The front portion of the upper link 129A is connected to the rear portion of the body 16 (body frame 21) so as to be rotatable around the axis in the body width direction K2. The rear portion of the upper link 129A is connected to the mounting frame 124 so as to be rotatable around the axis in the machine width direction K2. A front portion of the lower link 129B is connected to a rear portion of the body 16 (body frame 21) so as to be rotatable around an axis in the body width direction K2. The rear portion of the lower link 129B is connected to the mounting frame 124 so as to be rotatable around the axis in the machine width direction K2. The connection link mechanism 129 can vertically move the planting machine 4 in parallel.

The elevation driving body 130 is, for example, an elevation cylinder configured by a hydraulic cylinder. One end side of the lift cylinder 130 (bottom side of the cylinder body 130A) is rotatably connected to the rear portion of the body 16 (body frame 21) about the axis in the body width direction K2. The other end side of the lifting cylinder 130 (connecting body 130C attached to the tip side of the piston rod 130B) is connected to the mounting frame 124 so as to be rotatable around the axis in the machine width direction K2. One end of the lift cylinder 130 is concentrically pivoted with the front portion of the upper link 129A, and the other end is concentrically pivoted with the rear portion of the lower link 129B.

As shown in FIG. 21, the transplanter 1 has a control valve 132 that controls the lifting cylinder 130 . Control valve 132 is controlled by controller 131 . The control valve 132 is formed by an electromagnetic valve, and is composed of, for example, 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 hydraulic lines. When the control device 131 sends a lift command signal 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 extends. Then, the main frame (work machine 4 with planting) rises. Further, when a lowering command signal is sent from the control device 131 to the control valve 132, the control valve 132 is switched to the lowering position, hydraulic oil is supplied to the rod side of the cylinder main body 130A, and the elevating cylinder 130 contracts to contract the main body. Frame 37 descends.

It should be noted that the elevation driving body 130 may be composed of an electric cylinder (electric actuator) or an electric hydraulic cylinder (electric hydraulic actuator). An electric cylinder is an electrically driven cylinder, for example, an actuator that rotates a ball screw about its axis by an electric motor to move a ball screw nut, and advances and retracts a rod by the movement of the ball screw nut. An electric hydraulic cylinder is, for example, an actuator that integrates 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 valve is switched to operate the hydraulic cylinder. Actuator.

As shown in FIG. 22, the transplanter 1 has a rolling mechanism 135 for rocking the planting machine 4 around the rolling axis X1. The rolling mechanism 135 has a rolling motor 136 , rolling rollers 137 and cords 138 . The rolling motor 136 and the rolling roller 137 are provided on the mounting frame 124 (working 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 central portion of the main frame 37 in the body width direction K2. The rolling roller 137 is arranged above the rolling motor 136 . The rolling motor 136 is composed of an electric motor that can rotate forward and backward. Also, the rolling motor 136 is connected to the control device 131 . The control device 131 controls the 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. As shown in FIGS. The transmission mechanism 139 has 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 power of the rolling motor 136 rotates the rolling roller 137 forward and backward.

The cord body 138 is formed of, for example, a wire or cable and wound around the rolling roller 137 . One side (right side) 138R of the cord body 138 extends to one side (right side) from the rolling roller 137, and the other side (left side) 138L extends to the other side (left side) from the rolling roller 137. It is One side 138R of the cord body 138 is connected to one side of the planting work machine 4 in the body width direction K2, and the other side 138L is connected to the other side of the planting work machine 4 in the body width direction K2. Specifically, as shown in FIG. 22, one side 138R of the cord 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 stay 52R of the main frame 37, and the other end of the second buffer spring 140L is hooked on the second spring 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 roller 137 is rotated in one direction by the rolling motor 136, for example, when it is rotated clockwise in FIG. 22, the left side of the rope 138 is pulled. As a result, the main frame 37 (planting work machine 4) swings clockwise in FIG. 22 around the rolling axis X1. Further, when the rolling roller 137 is rotated in the forward and reverse directions (counterclockwise direction in FIG. 22) by the rolling motor 136, the right side of the cord body 138 is pulled. As a result, the main frame 37 (planting work machine 4) swings counterclockwise in FIG. 22 around the rolling axis X1.

In addition, the main frame 37 (planting work machine 4) can be freely swung 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 motion of the planting machine 4 around 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 projecting radially outward of the gear from the other teeth. By contacting the contactor of the switch 141L, a large swing of the planting work machine 4 around the rolling axis X1 is detected. When the first limit switch 141R or the second limit switch 141L detects the detection tooth 142, the driving of the rolling motor 136 is stopped, for example.

As shown in FIG. 2, the planting machine 4 includes a first sensing roller 126R (sensing roller 126) located in front of the first planted body 12R and a sensing roller 126 located in front of the second planted body 12L. and 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 implantation 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 implantation 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 where 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 on which the seedling 7 is planted by the second planting body 12L.

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

The first roller support mechanism 145R includes a first roller bracket 146R that supports the first sensing roller 126R so as to be able to swing up and down, and a first roller bracket 146R that is urged downward to move the first sensing roller 126R to the field (ground). ) and a first biasing spring (spring) 147R. The first roller bracket 146R has a first arm 148A, a second arm 148B, and a connecting member 148C. The first arm 148A is arranged on the outboard side of the first sensing roller 126R, and the second arm 148B is arranged on the inboard side of the first sensing roller 126R. The first arm 148A and the second arm 148B project 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 has a fixed plate 149A provided over the first unit bracket 69 and the second unit bracket 70, and a mounting plate 149B fixed to the fixed 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. 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. Front portions of the first arm 148A and the second arm 148B are pivotally supported by a pivot 150 on the first side plate portion 149a and the second side plate portion 149b. 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 body width direction K2.

As shown in FIGS. 25 and 26, the first biasing spring 147R is formed of a compression coil spring and fitted outside the rod member 152. As shown in FIGS. A lower portion of the rod member 152 is pivotally supported by a rod support shaft 153 fixed to the second arm 148B. An upper portion 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 vertically movable along the axial direction of the rod member 152 . The first biasing spring 147R is interposed in a compressed state between a spring receiving plate 155 attached to the rod member 152 and the support stay 154. As shown in FIG.

The second roller support mechanism 145L includes a second roller bracket 146L that supports the second sensing roller 126L so as to be vertically swingable, and a second roller bracket 146L that is downwardly urged 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 the support bracket 149, and rotatably supports the second sensing roller 126L by the roller shaft 151. As shown in FIG. The second biasing spring 147L is formed of a compression coil spring and fitted to 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 (change in height) of the first planting surface 144R is detected by the first sensor mechanism 156R 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). The height (change in height) of the second planting surface 144L is detected by the second sensor mechanism 156L by the amount of swinging of the second roller bracket 146L (the amount of change in the vertical position of the second sensing roller 126L).

As shown in FIGS. 25 and 27, the first sensor mechanism 156R has 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. As shown in FIG. 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 abutment 161 is fixed to the rear portion of the arm body 160 . The abutment 161 is formed by a pin and rests 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 the first height detection sensor 157R swings up and down together with the first roller bracket 146R. The swing amount 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 has 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. As shown in FIG. The arm body 160 has a front portion connected to the rotation detector of the second height detection sensor 157L, and is rotatable together with the rotation detector. The abutment 161 is fixed to the rear portion of the arm body 160 . The abutment 161 is formed by a pin and rests 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 moves to the second position. The swing amount 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. Scraper 162 is attached to 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 similarly provided with a scraper 162 for removing mud 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 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 planted by the first planting body 12R and the planting depth of the seedlings 7 planted by the second planting body 12L are different. The depth will be different. Therefore, if there is a difference in height between the first planting surface 144R and the second planting surface 144L, the height of the first planting body 12R with respect to the first planting surface 144R (planting surface) is the height of the first planting body 12R. In order to set 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 predetermined heights, the planting work machine 4 is set to a rolling shaft. Oscillate around the center X1. Specifically, the control device 131 calculates the height difference 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 work machine 4 is swung around the rolling axis X1 in a direction to reduce the height difference. In other words, the control device 131 calculates the height difference 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 work machine 4 is swung around the rolling axis X1 in a direction to reduce the height difference 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, there is a height difference between the first sensing roller 126R and the second sensing roller 126L. In this case, the controller 131 swings the planting machine 4 about the rolling axis X1 so that the left side goes up and the right side goes down. Thus, basically, 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 are set to the same depth. In addition, when a height difference is provided in advance between the first height H1 and the second height H2 by the angle adjustment unit 194 described later, the planting work is performed so as to return to the set height. The machine 4 is oscillated around the rolling axis X1.

In addition, the control device 131 lifts and lowers the planting machine 4 based on unevenness of the planting surface (field 6) detected by one of the first sensing roller 126R and the second sensing roller 126L. The height difference 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 unevenness of the first planting surface 144R is detected by the first sensing roller 126R, and the planting work machine 4 is moved up and down according to the unevenness of the first planting surface 144R, so that the body longitudinal direction K1 is detected. The planting depth of the seedlings 7 in (longitudinal direction of the ridge) is set to the same depth. Specifically, when the planting surface becomes higher, the planting machine 4 is raised, and when the planting surface becomes lower, the planting machine 4 is lowered. Also, the difference in height is calculated according to 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 height difference 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. It is possible to stably perform rolling control for swinging around the axis X1.

In addition, the unevenness of the second planting surface 144L is detected by the second sensing roller 126L, and the planting work machine 4 is raised and lowered, and the first sensing roller 126R and the second sensing roller 126L are operated with the second sensing roller 126L as a reference. You may calculate the height difference between
Further, in the present embodiment, when 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 The difference in height is absorbed by the free swing around the center X1. When the height difference between the first planting surface 144R and the second planting surface 144L reaches or exceeds a predetermined level, the control device 131 operates the rolling mechanism 135 to perform rolling control.

As shown in FIG. 28, swing frames 164 are provided on the first unit frame 38R and the second unit frame 38L so as to be vertically swingable. Since the first unit frame 38R and the second unit frame 38L are fixed with respect to the main frame 37, the swing frame 164 can swing vertically with respect to the main frame 37 (implantation 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 symmetrical and have 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 outer side of the body, a second side frame portion 164B on the inner side of the body, a first side frame portion 164A and a second side frame portion 164B. An intermediate frame portion 164C that connects the front and rear middle 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. and a second support portion 164F fixed to the front portion of the second side frame portion 164B by bolts or welding.

The first support portion 164E is rotatably supported by the first unit bracket 69 about a horizontal axis (an axis extending in the width direction of the machine body), and the second support portion 164F is supported by the second unit bracket 70 about a horizontal axis. It is rotatably supported. Therefore, the swing frame 164 can swing up and down at the rear portion. More specifically, the planting drive shaft 165 is rotatably supported around the 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 planted drive shaft 165 so as to be capable of rotating integrally with the planted drive shaft 165 . Rotational power is transmitted from the drive main shaft 71 to the transmission gear 166 to rotate the planted drive shaft 165 .

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

The first cover soil wheel 62R is supported by a first roller frame (roller frame 168) 168R on a first swing frame 164R so as to be vertically swingable. The second cover soil wheel 62L is supported by the swing frame 164 so as to be vertically swingable by the second roller frame 168L (roller frame 168).
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 collectively described.

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 outer side of the fuselage, a second side rod portion 168B on the inner side of the fuselage, and a rear portion. and 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. A front portion of the first portion 168a is rotatably connected to a bracket member 169 projecting 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. A front portion of the first portion 168c is rotatably connected to a bracket member 170 projecting 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 end portions of the second portion 168b and the second portion 168d are connected. The soil covering wheel 62 is attached via a stay member 171 to the rear portion of the first portion 168a and the rear portion of the first portion 168c.

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 across the second swing frame 164L and the second roller frame 168L. A second planting depth adjusting mechanism 172L (planting depth adjusting 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 172R and the second planting depth adjustment mechanism 172L will be described together.

The planting depth adjusting mechanism 172 is a mechanism for adjusting the planting depth of the seedlings 7 by fixing the interval between the roller frame 168 and the swing frame 164 so as to be changeable and changing the interval.
As shown in FIGS. 29 and 30, the planting depth adjusting mechanism 172 has a mechanism frame 173, an adjusting 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. As shown in FIG. The adjusting motor 174 is formed by an electric motor and is connected to the control device 131 . The adjust motor 174 is attached to the mechanism frame 173 . Specifically, the adjust motor 174 is attached to the upper portion of the mechanism frame 173 . The drive mechanism 175 is driven by an adjust motor 174 . Specifically, the drive mechanism 175 has a first gear 177 driven by the adjust 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. A first gear (pinion gear) 177 is rotatably attached to the upper portion of the mechanism frame 173 . The second gear (sector gear) 178 has a lower portion that is pivotally supported by the mechanism frame 173 and an upper portion that has a gear portion 178 a that meshes with the first gear (pinion gear) 177 . The second gear 178 (sector gear) has a connecting portion 178 b that connects the link member 176 . An upper portion 176a of the link member 176 is connected to a connecting portion 178b via a ball joint. A lower portion 176b of the link member 176 is connected via a ball joint to a bracket member 179 fixed to the rear rod portion 168C.

In the planting depth adjusting mechanism 172 , the adjust motor 174 rotates the first gear 177 so that the second gear 178 swings around the pivot 180 . When the second gear 178 swings, the connecting portion 178b moves up and down to move the link member 176 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 interval between the roller frame 168 and the rocking frame 164 is changed, and the height of the planting body 12 with respect to the soil covering wheel 62 is changed. Changing the height of the planting body 12 with respect to the cover ring 62 changes the height of the planting body 12 with respect to the planting surface, thereby changing the planting depth. Further, by stopping the driving of the adjusting motor 174, the interval between the roller frame 168 and the swinging frame 164 is fixed, and the set planting depth can be maintained.

The rocking frame 164 rocks up and down as the soil covering wheel 62 follows the unevenness of the field 6 . The swing frame 164 is set so as to be positioned in the center of the allowable swing range. When the planting depth is changed, the swinging frame 164 swings up and down with respect to the transplanting frame 36, so that the relative position in the vertical direction with respect to the transplanting frame 36 changes. Therefore, when the interval between the roller frame 168 and the swinging frame 164 is changed, the controller 131 adjusts the relative position of the swinging frame 164 with respect to the transplantation frame 36 according to the change in the interval between the roller frame 168 and the swinging frame 164. The main frame 37 (implantation frame 36) is raised and lowered in the returning direction.

The planting depth adjustment mechanism 172 has a detector 182 that detects the amount of change in the interval between the roller frame 168 and the swing frame 164 . The detection unit 182 is connected to the control device 131 and feeds back the amount of change in the interval between the roller frame 168 and the swing frame 164 to the control device 131 . The detection unit 182 is composed of, for example, a potentiometer. A rotation detector of the detector 182 is connected to a pivot 181 that pivots the second gear 178 . The pivot 181 rotates integrally with the second gear 178 . Therefore, the detector 182 detects the amount of rotation of the second gear 178 .

FIG. 31 shows an earth covering pressure adjusting mechanism 183 for adjusting the earth covering pressure of the earth covering ring 62 (the force with which the earth covering ring 62 presses the ground). The earth covering pressure adjusting mechanism 183 has a support plate 185 , an operating lever 184 , a spring hooking arm 186 , a first fixing bracket 187 A, a second fixing bracket 187 B, an interlocking link 188 and an adjusting spring 189 .
The support plate 185 is fixed to the rear portion of the unit frame 38 . The operation lever 184 is attached to the support plate 185 by a pivot 185A so as to be swingable. The spring hook arm 186 is fixed to the operating lever 184 with a bolt and swings integrally with the operating lever 184 . The first fixed bracket 187A is fixed to the swing frame 164. As shown in FIG. The second fixed bracket 187B is fixed to the unit frame 38. As shown in FIG. The interlocking link 188 has a first link 188A pivoted on the first fixed bracket 187A and a second link 188B pivoted on the 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, one end of which is hooked in a locking hole 186a formed in the end of the spring hook arm 186, and the other end of which is hooked in a locking hole 188a formed in the first link 188A. ing.

In the earth covering pressure adjusting mechanism 183, the earth covering pressure can be adjusted by swinging the operating lever 184 around the pivot 185A to change the spring force of the adjusting spring 189. As shown in FIG. A plurality of locking portions 185a are provided on the upper portion of the support plate 185. By locking the locking pieces 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 adjusting 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 in an upper portion 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 portion 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 section 127 is connected to the 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 . The operation unit 127 also has a planting depth adjustment unit 190 that operates the planting depth adjustment mechanism 172 . The planting depth adjusting part 190 is provided at the rear (lower part) of the operation part 127 . The planting depth adjusting section 190 has an operation dial (rotational operation member) 191 and an index 192 indicating 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 unit 190 has a depth display unit 193 that indicates the operation direction of the operation dial 191 . The depth display portion 193 has the characters “deep” provided on the right side of the operation dial 191 and the characters “shallow” provided on the left side of the operation dial 191 .

In the planting depth adjusting section 190 described above, when the operating dial 191 is turned to the right, the first operating signal S1 is sent from the operating section 127 to the control device 131 . Upon receiving the first operation signal S1, the control device 131 operates the planting depth adjuster 190 in the direction of increasing the planting depth. The reference planting depth is set with the index 192 pointing forward (upward) as shown in FIG. deep from deep. Also, 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 . When the control device 131 acquires the second operation signal S2, it operates the planting depth adjustment unit 190 in a direction to make the planting depth shallower. 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 is from the reference depth. It should be noted that the planting depth may be increased by turning the operation dial 191 to the right, and the planting depth may be decreased by turning it to the left.

The operation dial 191 can be operated step by step, and the planting depth can be adjusted step by step. The operation dial 191 may be continuously operable to continuously adjust the planting depth.
Since the operator 2 can operate the planting depth adjusting mechanism 172 while seated in the driver's seat 3 by the planting depth adjusting unit 190, the planting depth of the seedlings 7 can be easily adjusted.

The operating section 127 has an angle adjusting section 194 . The angle adjustment part 194 performs an operation of lowering one side of the machine body width direction K2 of the planting work machine 4 around the rolling axis X1 or lowering the other side. By lowering one side of the machine body width direction K2 of the planting machine 4, the planting body 12 on the 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 of 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 planted with the first planting body 12R and the seedlings 7 planted with the second planting body 12L are different. may differ slightly from the planting depth of In such a case, the planting depth is finely adjusted, for example, by lowering the planting body 12 having a shallower planting depth. Rolling control is performed with this adjustment.

As shown in FIG. 32, the angle adjusting section 194 is provided in the front (upper) portion of the operating section 127 and has a first switch 195 and a second switch 196 arranged side by side in the body width direction K2. . The first switch 195 sends a first lowering signal to the control device 131 to lower one side (first planting body placement side) of the planting work machine 4 around the rolling axis X1. In other words, the first switch 195 sends to the controller 131 the first lowering signal S3 for lowering the first planted body placement side of the planting work machine 4 about the rolling axis X1. Control device 131 will lower the right side of working machine 4 with planting, if the 1st lowering signal S3 is acquired.

The second switch 196 sends a second lowering signal S4 to the controller 131 to lower the other side (second planting body placement side) of the planting work machine 4 in the body width direction K2 around the rolling axis X1. Control device 131 will lower the left side of working machine 4 with planting, if the 2nd lowering signal S4 is acquired.
For example, every time the first switch 195 or the second switch 196 is pressed, the planting work machine 4 rotates around the rolling axis X1 by a predetermined angle, and the planting depth is set by a predetermined dimension unit (several millimeters or several centimeters). can be fine-tuned with In addition, it is not limited to this.

In addition, the operating section 127 has a graft height adjusting section 197 . The transplant height adjuster 197 is arranged in the middle of the operation part 127 (between the angle adjuster 194 and the planting depth adjuster 190 ), and has an up switch 198 and a down switch 199 . The down switch 199 is arranged to the right of and behind (below) the up switch 198 .
The transplant height adjuster 197 compensates for the difference in sinking between the sensing roller 126 and the covering soil wheel 62 . It is also used for correcting mechanical and electrical initial value deviations. The aim is to prevent the swing frame 164 from deviating significantly above or below the swing range.

This will be explained in detail below. Also, numerical values described in the following description are illustrative and not limiting.
The planting body 12 and the soil cover ring 62 are attached to the rocking frame 164 that swings up and down with the front part (planting drive shaft 165 ) as a fulcrum. When 62 is raised, for example, by 1 cm, the swing frame 164 is lowered and the planting body 12 is about 1 cm deeper into the ground, increasing the planting depth by about 1 cm.

The rocking frame 164 has a rocking range of about 4 cm at the soil covering ring 62, and if the soil covering ring 62 is in the center of the rocking range, the planting depth can be kept constant even if the unevenness of the ridges is ±2 cm. can.
However, if the height of the transplanting frame 36 (the height of the fulcrum of the swinging frame 164 (the planting drive shaft 165)) is the same, if the soil covering ring 62 is raised by 1 cm, the swinging frame 164 will be out of the swinging range. Shifting downward, the ridge unevenness applicable range becomes -1 cm to +3 cm. Therefore, when the planting depth is increased by 1 cm, the soil covering ring 62 is raised by 1 cm and the transplanting frame 36 is lowered by 1 cm so that the swinging frame 164 is positioned at the center of the swinging 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 the seedling 7) and the upper surface of the ridge are flush. It does not mean that 0 is always on the same side, but that a large adjustment margin is taken on the deep planting side.
By the way, the contact height of the sensing roller 126 and the contact height of the covering soil wheel 62 are not the same. That is, since the crushing load of the earth covering wheel 62 is higher than that of the sensing roller 126 , the earth covering wheel 62 sinks and becomes lower than the sensing roller 126 . From the design point of view, the soil ring 62 is assumed to be 1 cm lower, but the amount of sinking changes depending on the crushing load adjustment of the soil ring 62, the hardness of the upper surface of the ridge, the presence or absence of the mulch film, and the like. In order to correct this difference in the amount of sinking, a transplant height adjusting section 197 is provided.

When the lowering switch 198 is pressed, the transplant height adjuster 197 sends the correction value (first correction value S5) to the control device 131, and the control device 131 lowers the transplant frame 36 accordingly. Specifically, normally, when the difference between the contact surfaces of the sensing roller 126 and the covering soil wheel 62 is 1 cm, the ridges are soft and the covering soil wheel 62 sinks significantly (the rocking frame 164 is positioned below the rocking range). ) and the difference in the treads is large, e.g. 0.5 cm), and correct so that the swing frame 164 is in the center of the swing range.

Also, when the lift switch 198 is pressed, the transplant height adjuster 197 sends a correction value (second correction value S6) to the control device 131, and the control device 131 lifts the transplant frame 36 based thereon. Specifically, if the ridge is hard or if there is a mulch film, the height difference between the sensing roller 126 and the covering soil ring 62 is small, and the swing frame 164 is shifted upward in the swing range. Press ("high") to raise the implant frame 36.

It should be noted that the raise switch 198 and the lower switch 199 may change the numerical value in a predetermined dimensional unit, for example, each time the switch is pressed. If the planting depth is adjusted so that the soil cover 62 is aimed at 2 cm, the sensor roller 126 is aimed at 3 cm, which is 1 cm higher than the soil cover 62 . That is, when the detection value of the sensing roller 126 becomes +1 cm (4 cm), the graft frame 36 is raised, and when it becomes -1 cm (2 cm), the graft frame 36 is lowered. Also, when the raise switch 198 is pressed to raise the height of the transplant frame by 0.5 cm, the sensing roller 126 is controlled to be 2.5 cm higher than the cover soil ring 62 by (1-0.5=) 0.5 cm (sensing roller The height target value becomes lower, but the transplanted frame height becomes higher.). That is, when the detection value of the sensing roller 126 becomes +1 cm (3.5 cm), the implantation frame 36 is raised, and when it becomes -1 cm (1.5 cm), the implantation frame 36 is lowered. Also, when the lowering switch 198 is pressed to "lower" the graft frame height by 0.5 cm, the sensing roller 126 is controlled to a target of 3.5 cm, which is (1+0.5=) 1.5 cm higher than the covering soil wheel 62. That is, when the detection value of the sensing roller 126 becomes +1 cm (4.5 cm), the implantation frame 36 is raised, and when it becomes -1 cm (2.5 cm), the implantation frame 36 is lowered.

Here, the first planted lift mechanism 167R and the second planted lift mechanism 167L will be described with reference to FIGS. 33 and 34 . Since the first planting lifting mechanism 167R and the second planting lifting mechanism 167L are symmetrical and formed with the same structure, the first planting lifting mechanism 167R and the second planting lifting mechanism 167L are combined. explain.
As shown in FIGS. 33 and 34 , the planting lifting mechanism 167 has a first rotating case 201 , a second rotating case 202 and a support plate 121 . The first rotating case 201 is rotatably supported by the first side frame portion 164A via the first support shaft 205 . More specifically, a bracket member 169 provided on the first side frame portion 164A is provided with a bearing member 204, a first support shaft 205 is rotatably supported by 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 the second support shaft 206 . The support plate 121 is supported by the second rotating case 202 . Specifically, a bearing member 209 is provided above 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 projecting downward from the bearing member 209. A third support shaft 215 provided in the second rotating case 202 is supported. The support plate 121 supports the planting body 12 . More specifically, the planting body 12 has a front structure 12A and a rear structure 12B. The upper rear side of the body 12B is rotatably supported around a pivot 212B provided on the support plate 121. As shown in FIG.

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

As shown in FIG. 34, the planting body 12 is provided on the side of the planting lift mechanism 167 (second rotating case 202). Specifically, the planting body 12 is provided at a position overlapping the second rotating case 202 in a side view. As a result, the planting device (the planting body 12 and the planting lifting mechanism 167) can be configured compactly, and as shown in FIG. It can be brought close to the seedling placing table 9.

When the planting body 12 is arranged to overlap the planting lifting mechanism 167, when the seedling 7 is put into the planting body 12, the soil from the root ball of the seedling 7 is applied to the planting lifting mechanism 167. There is Therefore, as shown in FIGS. 35 and 36, a cover member 213 is provided above 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 212A, and the bearing member 216B that supports the pivot 212B. and a second cover portion 213B that covers from above.

As shown in FIGS. 35 and 36, an irrigation pipe 120 is provided on the side surface 214a of the first cover portion 214A on the planted 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 platform 9R and the second seedling platform 9L are arranged side by side in the machine width direction K2 and mounted on the main frame 37. As shown in FIG. 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 in the width direction K2 of the lower part of the seedling platform 9, and are attached to support rods 217 provided at the lower part of the seedling platform 9. there is The empty tray guide 14 includes a first rod portion 14A arranged on the outer side of the seedling mounting base 9, a second rod portion 14B disposed on the inner side of the seedling mounting base 9, and a first rod portion. 14A and a connecting rod portion 14C that connects the upper portions of the second rod portion 14B. The lower portion of the seedling placement table 9 has a first accommodation portion 218 provided on the right side and a second accommodation portion 219 provided on the left side.

As shown in FIGS. 39 and 40, the first seedling platform 9R has a first holder member 221R. The first holder member 221R has 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 accommodation portion 218, a second stay 225R attached to the second accommodation portion 219, and a connecting stay 226R connecting the first stay 224R and the second stay 225R. have A first stay plate 227R is fixed to the body inner 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 arranged on the body outer side of the first stay plate 227R and is also fixed to the first stay plate 227R. An operation shaft 229 extending in the body width direction K2 is rotatably provided under the first seedling placement table 9R over the body width direction K2. The fuselage 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 are spaced apart in the body width direction K2.

The lower holder 223R includes a first stay 231R attached to the first accommodation portion 218, a second stay 232R attached to the second accommodation portion 219, and a connecting stay 233R connecting the first stay 231R and the second stay 232R. have
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 platform 9L has a second holder member 221L. The second holder member 221L has an upper holder 222L and a lower holder 223L provided below the upper holder 222L. The upper holder 222L includes a first stay 224L attached to the first accommodation portion 218, a second stay 225L attached to the second accommodation portion 219, and a connecting stay 226L connecting the first stay 224L and the second stay 225L. have A second stay plate 227L is fixed to the body inner side (right side) of the connecting stay 226L. The lower holder 223L includes a first stay 231L attached to the first accommodation portion 218, a second stay 232L attached to the second accommodation portion 219, and a connecting stay 233L connecting the first stay 231L and the second stay 232L. have

A plurality of second rollers 234L are rotatably attached to the connecting stay 226L and the connecting stay 233L. A 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. A 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 extending in the body width direction K2 from the left portion of the first seedling placement table 9R to the second seedling placement table 9L is provided. The first stay plate 227 is bolted to the right portion of the connecting member 235 . The second stay plate 227L is bolted to the connecting member 235 so as to be positionally adjustable in the body width direction K2.
Since the first seedling platform 9R and the second seedling platform 9L are connected via the connecting member 235, the first seedling platform 9R and the second seedling platform 9L are connected to the first rail 56 and the second rail. 58 integrally in the body width direction K2.

FIG. 39 shows the state of the first seedling placement table 9R and the second seedling placement table 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 body width direction K2 between the first seedling platform 9R and the second seedling platform 9L is adjusted in accordance with the adjustment of the row spacing W1. It can be performed.
FIG. 41 shows a lateral feeding mechanism 236 that laterally feeds the first seedling placement table 9R and the second seedling placement table 9L in the body width direction K2 intermittently by one pitch of the pot portion 8a. The lateral feed mechanism 236 has a lateral feed shaft 237 arranged below the first seedling placement table 9R. The lateral feed shaft 237 is arranged extending in the body width direction K2 and supported by a support 238 fixed to the first unit frame 38R. The support 238 is provided on the frame main body 64 of the first unit frame 38R. The support 238 includes a first bracket 238A attached to the frame body 64, a second bracket 238B fixed to the first bracket 238A, a third bracket 238C fixed to the right end side of the second bracket 238B, and a third bracket 238C. It has a gearbox 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 to the gearbox 238D. The lateral feed shaft 237 is provided across the gearbox 238D and the fourth bracket 238E. A first transmission sprocket 239 that can rotate integrally with the drive shaft 71 and move in the axial direction is provided below 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 to the traverse shaft 237 via the transmission mechanism in the gear box 238D from the input shaft provided to the second transmission sprocket 240 so as to rotate integrally therewith.

The traversing shaft 237 uses a Napier screw having a spiral groove (so-called traverse groove) 237a that reciprocates in the axial direction formed on the outer peripheral surface. A slide member 241 having an engaging portion 241a that engages with the traverse groove 237a is fitted to the lateral feed shaft 237. As shown in FIG. A connecting shaft 242 is provided on the sliding body 241, and the connecting shaft 242 is connected to a connecting bracket 228 provided on the first holder member 221R of the first seedling placement table 9R. Vertical feed cams (operating bodies) 243 are fixed to one end side and the other end side of the horizontal feed shaft 237 .

When the lateral feed shaft 237 rotates, the engaging portion 241a is guided along the traverse groove 237a to reciprocate the sliding body 241 in the machine body width direction K2. As a result, the first seedling placement table 9R can be reciprocated in the body width direction K2. In addition, since the second seedling platform 9L is connected to the first seedling platform 9R via the connecting member 235, the first seedling platform 9R and the second seedling platform 9L are integrated with each other in the machine width direction K2. It is possible to move back and forth to

When adjusting the row spacing W1, the first seedling placement table 9R and the first unit frame 38R (the first transplanting unit 63R) are connected via a lateral feeding mechanism 236, and the first seedling placement table 9R and the second seedling placement table 9R are connected to each other. Since the seedling mounting base 9L is connected with the connecting member 235, the positions of the first seedling mounting base 9R, the second seedling mounting base 9L and the first transplanting unit 63R are integrally adjusted in the body width direction K2. be. The second implantation unit 63L is positioned separately from the first implantation unit 63R. After adjusting the first transplanting unit 63R and the second transplanting unit 63L in the body width direction K2, the position of the second seedling platform 9L is adjusted according to the adjusted row spacing W1.

FIG. 42 shows a vertical feed mechanism 244 and a seedling pick-up device 11 for vertically feeding the seedling tray 8 downward along the inclination direction by one pitch of the pot portion 8a. The vertical feeding mechanism 244 has a tray feeding mechanism 245 provided in each of the first container 218 and the second container 219 of each seedling platform 9 . The tray feeding mechanism 245 has a drive sprocket 246 , a driven sprocket 247 , and an endless transport chain 248 wound over the drive sprocket 246 and the driven sprocket 247 . The conveying chain 248 is provided with conveying pins 249 fitted 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 moved vertically downward (in the direction of arrow Y4 in FIG. 42) along the mounting plate 10 via the transport chain 248 and the transport pin 249. sent.

As shown in FIG. 42 , the seedling picking device 11 is arranged behind the lower part of the seedling placing table 9 and has a seedling picking claw 250 . The seedling picking claw 250 plunges into the pot portion 8a from the rear to pierce the root ball of the seedling 7, and retreats from the pot portion 8a in a state where the root ball is pierced, thereby taking out the seedling 7 from the pot portion 8a. After picking up the seedling 7, the seedling claw 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 over the first seedling placement table 9R and the second seedling placement table 9L. Vertical feeding power for feeding the seedling tray 8 in the vertical feeding direction Y4 (referred to as the vertical feeding direction) is transmitted to the vertical feeding main shaft 252 . In addition, the vertical feed drive mechanism 251 is provided on the first seedling mounting table 9R and is a first vertical feeding operation for feeding the seedling tray 8 placed on the first seedling mounting table 9R in the vertical feeding direction (longitudinal direction) Y4. It has a shaft 253R and a second vertical feed operation shaft 253L which is provided on the second seedling mounting table 9L and feeds the seedling tray 8 placed on the second seedling mounting table 9L in the vertical feeding direction (longitudinal 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 about the axis.

As shown in FIG. 44, the vertical feed main shaft 252 includes 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 placement table 9R and the second seedling placement table 9L. a body 256; The shaft 256 (longitudinal feed main shaft 252) has an extension shaft portion 256a that protrudes from the second seedling platform 9L to the side opposite to the first seedling platform 9R. The shaft body 256 has a first shaft 256A on the side of the first seedling platform 9R and a second shaft 256B on the side of the second seedling platform 9L. An extension shaft portion 256a is provided on the second shaft 256B. The first shaft 256A and the second shaft 256B are connected by a connecting body 257 between the first seedling mounting base 9R and the second seedling mounting base 9L. The coupler 257 has a first coupler 257A that is rotatably provided on the first shaft 256A, and a second coupler 257B that is rotatably provided on the second shaft 256B. The first coupling 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 longitudinal feed operating shaft 253R includes a first rotary cylinder 259R having a first input portion 258R adjacent to the rotating body 255, a second rotary cylinder 260R arranged on the opposite side of the first rotary cylinder 259R, and a second rotary cylinder 260R. It has a connecting tube 261R that connects the first rotating tube 259R and the second rotating tube 260R. A drive sprocket 246 in the first housing portion 218 of the first seedling placement table 9R is attached to the first rotary cylinder 259R so as to be integrally rotatable. A driving sprocket 246 in the second housing portion 219 of the first seedling placement table 9R is attached to the second rotary cylinder 260R so as to be integrally rotatable. Therefore, the drive sprocket 246 of the first seedling platform 9R rotates integrally with the first vertical feed operation shaft 253R.

As shown in FIG. 44, a first vertical feed clutch 262R for intermittently transmitting power from the vertical feed main shaft 252 to the first vertical feed operating shaft 253R is provided on the outside (right side) of the first seedling placement table 9R. are placed. 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 longitudinal feed clutch 262R includes a drive meshing portion 263 provided on the rotating body 255, a clutch body 264 fitted to the first input portion 258R so as to be axially movable and integrally rotatable, and provided in the clutch body 264. and a driven meshing portion 265 that engages and disengages with the drive meshing portion 263 by moving the clutch body 264 in the axial direction. By moving the clutch body 264 in a direction approaching the rotating body 255 and engaging the driven meshing portion 265 with the drive meshing portion 263, the first longitudinal feed clutch 262R is brought into a connected state, and the drive main shaft 71 performs the first longitudinal feed operation. Power is transmitted to the shaft 253R, and the seedling tray 8 on the first seedling placing table 9R can be vertically fed. Further, by moving the clutch body 264 in the direction away from the rotating body 255 to separate the driven meshing portion 265 from the drive meshing portion 263, power is not transmitted from the driving main shaft 71 to the first longitudinal feed operating shaft 253R. The seedling tray 8 on the first seedling platform 9R cannot be vertically fed (the first vertical feeding clutch 262R is disconnected).

A first clutch operation mechanism 266R for operating the first vertical feed clutch 262R is provided on the right side of the first seedling platform 9R. The first clutch operating mechanism 266R has an operating lever 267, a clutch fork 268, and a return spring 269. The operating lever 267 is pivotally supported on the first seedling placement table 9R so as to be vertically swingable. A clutch fork 268 is engaged with the clutch body 264 and connected to the operating lever 267 . The return spring 269 biases the operating lever 267 upward. With the operating lever 267 pulled up, the first longitudinal feed clutch 262R is engaged. When the operation lever 267 is pulled down against the spring force of the return spring 269, the clutch body 264 moves in the direction in which the driven meshing portion 265 separates from the driving meshing portion 263, and the first longitudinal feed clutch 262R is disengaged. Note that the operating lever 267 can be held in a pulled down state.

As shown in FIG. 45, the second longitudinal 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 includes a first rotary cylinder 259L on the first seedling placement table 9R side (right side), a second rotary cylinder 260L arranged on the opposite side of the first rotary cylinder 259L, and a first rotary cylinder 260L. It has a connecting tube 261L that connects the tube 259L and the second rotating tube 260L. The second rotary cylinder 260L has a second input portion 258L fitted to the extension shaft portion 256a so as to be relatively rotatable. A drive sprocket 246 in the first housing portion 218 of the second seedling placement table 9L is attached to the first rotary cylinder 259L so as to be integrally rotatable. A drive sprocket 246 in the second housing portion 219 of the second seedling placement table 9L is attached to the second rotary cylinder 260L so as to be integrally rotatable. Therefore, the drive sprocket 246 of the second seedling platform 9L rotates integrally with the second vertical feed operation shaft 253L.

As shown in FIG. 45, a second vertical feed clutch 262L for intermittently transmitting power from the vertical feed main shaft 252 to the second vertical feed operating shaft 253L is provided on the outside (left side) of the second seedling placement table 9L. are placed. The second longitudinal feed clutch 262</b>L has a rotating portion 271 and a clutch shifter 272 that engages and disengages from the rotating portion 271 . The rotating portion 271 is fitted to the extension shaft portion 256a so as to be axially movable and integrally rotatable. Further, the rotating portion 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 to the second input portion 258L so as to be axially movable and integrally rotatable. The clutch shifter 272 engages and disengages from the rotating portion 271 by moving in the axial direction.

The rotating portion 271 has a driving meshing portion 271a, and the clutch shifter 272 has a driven meshing portion 272a that meshes with the driving meshing portion 271a. By meshing the driven meshing portion 272a of the clutch shifter 272 with the drive meshing 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 The seedling tray 8 on the seedling placing table 9L can be fed vertically. Further, by separating the driven meshing portion 272a of the clutch shifter 272 from the driving meshing portion 271a, the power is not transmitted from the drive main shaft 71 to the second vertical feed operation shaft 253L, and the seedling tray 8 on the second seedling placement table 9L is displaced. A state in which longitudinal feeding is not possible (the second longitudinal feeding clutch 262L is in a disengaged state) is reached.

A second clutch operation mechanism 266L for operating the second vertical feed clutch 262L is provided on the left side of the second seedling platform 9L. The second clutch operating mechanism 266L has an operating lever 267, a clutch fork 268, and a return spring 269. The operating lever 267 is pivotally supported on the second seedling placement table 9L so as to be vertically swingable. The clutch fork 268 is engaged with the clutch shifter 272 and connected to the operating lever 267 . The return spring 269 biases the operating lever 267 upward. With the operating lever 267 pulled up, the second longitudinal feed clutch 262L is engaged. 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 meshing portion 272a separates from the driving meshing portion 271a, and the second longitudinal feed clutch 262L is disengaged. 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 platform 9R and the second seedling platform 9L can be vertically fed. This allows two-row planting. Further, when the first longitudinal feed clutch 262R is disconnected, only the seedling tray 8 placed on the second seedling placement table 9L can be longitudinally fed. Further, when the second longitudinal feed clutch 262L is disconnected, only the seedling tray 8 placed on the first seedling placement table 9R can be longitudinally fed. Thereby, one row can be planted.

As shown in FIGS. 44 and 46 , the vertical feed mechanism 244 has a vertical feed operating mechanism 273 that transmits power from the horizontal feed mechanism 236 to the vertical feed drive mechanism 251 . The vertical feed operating 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. have The rocking lever 277 rotates together with the rotating cylinder 275 via the one-way clutch 276 when rotating in the direction of transmitting the longitudinal feed power (direction of arrow Y5 in FIG. 46). Further, when the rocking lever 277 rotates in the direction opposite to the arrow Y5 direction, the one-way clutch 276 idles and does not rotate together with the rotating cylinder 275 .

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

Two types of vertical feeding gear 278 and ratchet arm 279 are provided so that the vertical feeding amount can be set corresponding to two types of seedling trays 8 having different numbers of pot portions 8a and different pitches of pot portions 8a. A selection member is provided to select one of the two types of ratchet arms 279 and engage the vertical feed gear 278 .
As shown in FIG. 46 , the rocking lever 277 is interlocked with the operating shaft 229 via an interlocking mechanism 280 . When the first seedling placement table 9R is laterally fed by the rotation of the lateral feeding shaft 237 and reaches the end of the movement area in the lateral feeding direction, the vertical feeding cam 243 rotating integrally with the lateral feeding shaft 237 abuts on the follower 230. Actuation shaft 229 rotates. When the operating shaft 229 rotates, the interlocking mechanism 280 pulls the swing lever 277 and rotates the swing lever 277 in the arrow Y5 direction. When the vertical feed cam 243 moves in the body width direction K2 and is removed from the follower 230, the swing lever 277 is rotated in the direction opposite to the direction of the arrow Y5 by a return spring (not shown) to return.

As shown in FIG. 38, a seedling shortage sensor 281 for detecting when the seedling tray 8 is replenished is provided at the bottom of the seedling placement table 9 . Two seedling trays 8 can be replenished on the mounting plate 10 while the seedling shortage sensor 281 is activated.
The bottom seedling tray 8 (the seedling tray 8 from which the seedlings 7 are taken out) is subjected to a load such as soil in the pot portion 8a of the seedling tray 8 on the upper side and moisture contained in the soil. Then, there is a possibility that the lowest seedling tray 8 may be bent due to the load of the seedling tray 8 above the lowest seedling tray 8 . Therefore, in the present embodiment, the seedling placing table 9 is provided with a tray pressing mechanism 282 that suppresses the seedling tray 8 from moving in the vertical feeding direction Y4. By suppressing the movement of the seedling tray 8 in the vertical feeding direction Y4 by the tray pressing mechanism 282, it is possible to suppress the load from being applied to the lowest seedling tray 8 and prevent the lowest seedling tray 8 from bending. . Therefore, the tray pressing mechanism 282 suppresses the seedling tray 8 located above the lowermost seedling tray 8 from moving in the longitudinal feeding direction Y4. Further, the tray pressing mechanism 282 is arranged on the rear side of the vertical feeding mechanism 244 in the vertical feeding direction Y4. As a result, the tray holding mechanism 282 can be properly assembled without overlapping the vertical feed mechanism 244 .

In this embodiment, a plurality of tray pressing mechanisms 282 are provided. The plurality of tray pressing mechanisms 282 includes a first tray pressing mechanism 282A that suppresses movement of the seedling tray 8 above the lowermost seedling tray 8 in the vertical feeding direction, and a movement of the uppermost seedling tray 8 in the vertical feeding direction Y4. and a second tray pressing mechanism 282B that suppresses the 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. .

Since the first tray pressing mechanism 282A and the second tray pressing mechanism 282B are formed with the same configuration, they will be described together. In addition, since the first pressing mechanism 283 and the second pressing mechanism 284 are formed with the same configuration except for some configurations, the common parts are the first pressing mechanism 283 and the second pressing mechanism 284. I will explain all together.
47 shows a plan view of the second pressing mechanism 284. FIG. 48 shows a side view of the second pressing mechanism 284. FIG. The front (front) in the longitudinal feed direction Y4 is the direction of arrow Y4 in FIG. 47, and the rear (rear) in the longitudinal feed direction Y4 is the direction opposite to the direction of arrow Y4.

As shown in FIGS. 47 and 48, the second pressing mechanism 284 (first pressing 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 regulation rod 291 .
The base member 286 is attached to the seedling mounting table 9 (mounting plate 10). Specifically, the base member 286 is formed of a plate material, and includes a mounting wall 286a attached to the end portion side of the placement plate 10 in the machine width direction K2 by bolts or the like, and an end portion of the mounting wall 286a (on the side of the seedling tray 8). end) in the normal direction of the mounting plate 10 and a rising wall 286b. The pivot 287 is arranged at the rear portion (upper portion) of the base member 286 in the longitudinal 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 cylinder 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 engaged with a spring hooking member 292 fixed to the rotating cylinder 288 . The spring hook member 292 protrudes from the rotary cylinder 288 to the side opposite to the seedling tray 8 . In other words, the spring hooking member 292 protrudes from the rotary 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 hooking member 292 is provided with a plurality of spring hooking holes 293 for hooking one end of the biasing member 289 so that the locking position of the one end of the biasing member 289 can be changed. Thereby, the biasing force can be changed. The other end side of the spring hook member 292 is engaged with a support plate 294 erected on the base member 286 . The support plate 294 is provided at the front portion (lower portion) of the base member 286 in the longitudinal feeding direction Y4.

As shown in FIGS. 49 and 50, the spring hooking member 292A of the first pressing mechanism 283 is fixed to the rotating cylinder 288 on the base side of the pivot 287. As shown in FIGS. As shown in FIGS. 49 and 51, the spring hooking member 292B of the second pressing mechanism 284 is fixed to the rotating cylinder 288 on the distal end side of the pivot 287. As shown in FIGS. Therefore, the spring hooking member 292A is arranged below the spring hooking member 292B. As a result, the first seedling mounting table 9R and the second seedling mounting table 9L can be brought close to each other.

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

As shown in FIGS. 47 and 48, the pressing member 290 has a proximal fixing portion 290a, a midway contact portion 290b and a connecting portion 290c, and a distal end portion 290d. The fixed portion 290 a is fixed to the rotary cylinder 288 . The contact portion 290b is formed away from the fixed portion 290a on the front side in the longitudinal feeding direction Y4. The contact portion 290 b is formed in a straight line 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 . Although the pressing member 290 may be brought into contact with the front surface (upper surface wall 8b) of the seedling tray 8, there is a risk that the pressing member 290 may pinch the leaves of the seedlings 7 therebetween. 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 fixed portion 290a and the contact portion 290b. The connecting portion 290c is formed in an inclined shape that shifts from the fixed portion 290a in the longitudinal feeding direction Y4 toward the seedling tray 8 (the direction toward the center of the seedling platform 9 in the machine width direction K2). Thereby, the seedling tray 8 can be favorably guided to the contact portion 290b.

The distal end portion 290d is formed to be inclined with respect to the contact portion 290b. More specifically, the tip end portion 290d extends in a direction away from the seedling tray 8 (from the center of the seedling platform 9 in the machine width direction K2 toward the longitudinal feeding direction Y4 from the tip end of the contact portion 290b toward the machine width direction K2). direction).
The biasing force of the biasing member 289 biases the pressing member 290 around the pivot 287 toward the seedling tray 8 . As a result, the pressing member 290 is biased by the biasing member 289 to press 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 longitudinal feeding direction Y4. The seedling tray 8 is restrained from moving in the vertical feeding direction Y4 by the frictional force between the pressing member 290 and the side surface of the seedling tray 8. is set to a force that suppresses the movement in the vertical feeding direction Y4, but does not stop the movement in the vertical feeding direction Y4 due to the weight of the seedling tray 8 having the bed soil containing moisture.

As shown in FIGS. 47 and 48, the restricting rod 291 is fixed to the base member 286. As shown in FIGS. The restricting rod 291 has a first restricting portion 296 . The first restricting portion 296 is positioned in the middle of the restricting rod 291 in the longitudinal feeding direction Y4. The first restricting portion 296 is formed in a straight line and positioned on the upper surface side of the side edge of the seedling tray 8 to restrict upward movement of the seedling tray 8 . The first restricting portion 296 is fixed to the upper portion of the support plate 294 .

A rear portion 297 of the regulating rod 291 is a first portion 297a extending in a direction of inclination away from the seedling tray 8 toward the rear in the longitudinal feeding direction Y4 from the rear end of the first regulating portion 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 longitudinal feeding direction Y4 and fixed to the mounting wall 286a of the base member 286. As shown in FIG.
The restricting rod 291 has a second restricting portion 298 that restricts the rotation of the pressing member 290 about the pivot 287 when the pressing member 290 does not press the seedling tray 8 . The second restricting portion 298 is configured by the front portion of the restricting rod 291 . The second restricting portion 298 includes a first portion 298a extending in an inclined direction moving away from the seedling tray 8 in the longitudinal feeding direction Y4 from the front end of the first restricting portion 296 in the longitudinal feeding direction Y4, and a first portion 298a. It has a second portion 298b extending downward from 298a and with which a distal end portion 290d of the pressing member 290 can abut.

When the seedling tray 8 passes the pressing member 290, the pressing member 290 rotates about the pivot 287 toward the center of the placement plate 10 in the machine width direction K2. The tip side portion 290d of the contact can restrict the rotation of the pressing member 290. As shown in FIG. As a result, it is possible to prevent the pressing member 290 from entering the center side of the placing plate 10 and hindering the supply of the seedling tray 8 . In addition, when replenishing the seedling tray 8, there is no need to increase the distance between the pressing members 290 facing each other in the machine body width direction K2.

As shown in FIG. 52, in the transplanter 1 of this embodiment, a leveling plate 299 can be attached to the lower front portion of the main frame 37 . The leveling plate 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 plowed by a rotary tiller or the like, the gaps (joints) between adjacent tillage tracks are raised. When a seedling 7 is planted in this joint, the seedling 7 is buried. Therefore, a leveling plate 299 can be attached to the transplanter 1 . By leveling the planting surface 300 before planting with the leveling plate 299, the adjacent tillages can be leveled, and the seedlings 7 can be planted well.

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

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

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

The curved portion 303b extends from the lower end of the main body plate portion 304a to the lower end of the extension plate portion 304b, and is formed in a curved shape that protrudes rearward. The lower end portion 303c protrudes from the lower end of the extension 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 positioned on the extension line r1 of the lower surface of the main body plate portion 304a.

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

As shown in FIGS. 54 and 55 , the attachment portion 302 is attached to a bracket member 307 fixed to the second frame 40 . 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 projecting forward from the end portion of the fixed wall portion 307a on the outer side of the aircraft body, and the fixed wall portion 307a. and a second wall portion 307c protruding forward from the inboard side end portion of the fuselage. The second wall portion 307c has an extension portion 307d on its upper portion. A first pin 308 is attached to the extension portion 307d. An upper portion of the leveling plate 299 is arranged on the front side of the bracket member 307 , and an attachment portion 302 provided on the upper portion 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. and a second side wall 302c extending from the inward side end toward the bracket member 307 . The first sidewall 302b has an extension 302d at the top. A second pin 309 is attached to the extension 302d. The first side wall 302b is arranged on the outer side of the first wall portion 307b. The second side wall 302c is arranged inside the body of 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 means of a mounting pin 310 passing through the first side wall 302b, the first wall portion 307b, the second wall portion 307c, and the second side wall 302c. It is mounted rotatably around an axis that As a result, the leveling plate 299 is supported by the bracket member 307 so as to be vertically swingable.
The mounting portion 302 has a biasing spring 311 that biases the leveling plate main body 301 downward (toward the ground). The biasing spring 311 is formed by a torsion coil spring, and the coil portion 311a is fitted outside the mounting pin 310 between the first wall portion 307b and the second wall portion 307c. One end side 311 b of the biasing spring 311 is hooked on the first pin 308 . The other end side 311 c of the biasing spring 311 is hooked on the second pin 309 .

In FIG. 53, the reference W1a indicates the minimum inter-row spacing, and the reference W1b indicates the maximum inter-row spacing. Reference character W2 indicates the width of the leveling plate 299 (leveling plate main body 301) in the body width direction K2. Symbol W3 indicates the distance between the outer ends of the first planted body 12R and the second planted body 12L in the body width direction K2 when the row spacing W1 is set to the maximum row spacing W1b. Reference character 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 inter-row spacing W1 is set to the maximum inter-row spacing W1a.

As shown in FIG. 53, the width W2 is wider than the distance W3. Moreover, the width W2 is formed to be wider than the distance W4.
As described above, the leveling plate 299 is formed to have a width W2 corresponding to the adjustment of the row spacing, and it is not necessary to change the position of the leveling plate 299 even if the row spacing is adjusted.
The transplanter 1 of the present embodiment described above includes a mounting plate 10 on which at least one seedling tray 8 is placed in a downwardly inclined state, and a seedling tray 8 that is longitudinally fed downward along the mounting plate 10. A vertical feeding mechanism 244 and a tray holding mechanism 282 for suppressing the movement of the seedling tray 8 in the vertical feeding direction Y4 are provided. and a pressing member 290 for pressing the seedling tray 8.

According to this configuration, the seedling tray 8 can be suppressed from moving in the vertical feeding direction Y4 by the pressing member 290 that presses the seedling tray 8 by being biased by the biasing member 289 . Thereby, the bending of the seedling tray 8 can be suppressed.
Also, 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 pressing 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 pressing mechanism 282 does not overlap the vertical feeding mechanism 244, and the tray pressing mechanism 282 can be attached satisfactorily.
The tray pressing mechanism 282 has a base member 286 attached to the loading 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 portion 290a fixed to the rotating cylinder 288, a contact portion 290b that contacts the seedling tray 8, and a connecting portion 290c that connects the fixed portion 290a and the contact portion 290b.

According to this configuration, the pressing member 290 assembled to the base member 286 can be attached to the mounting plate 10, and the assembly can be facilitated.
The pivot 287 and the rotating cylinder 288 are arranged on the rear side of the pressing member 290 in the longitudinal feeding direction Y4, and the connecting portion 290c approaches the seedling tray 8 in the longitudinal feeding direction Y4 from the fixed portion 290a. 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.
The tray holding mechanism 282 also has a regulation rod 291 fixed to the base member 286. The regulation rod 291 is positioned on the upper side of the side edge of the seedling tray 8 and regulates the upward movement of the seedling tray 8. It has a first restricting portion 296 and a second restricting portion 298 that restricts the rotation of the pressing member 290 around the pivot 287 when the pressing member 290 does not press the seedling tray 8 .

According to this configuration, the seedling tray 8 can be prevented from floating by the first restricting portion 296 . Further, when the seedling tray 8 passes the pressing member 290, the second restricting portion 298 can restrict the pressing member 290 from swinging toward the central portion of the placement plate 10 in the machine width direction K2. As a result, it is possible to prevent the pressing member 290 from interfering with the replenishment of the seedling tray 8 .

Further, the tray pressing mechanism 282 has a support plate 294 erected on a base member 286 and supporting the restricting rod 291, and a spring hooking member 292 fixed to the rotating cylinder 288. The biasing member 289 is , one end of which is engaged with the spring hook member 292, and the support plate 294 has engaging portions 295A and 295B for engaging the other end of the tension coil spring.

According to this configuration, the base member 286 can be attached to the mounting plate 10 in a state in which the restricting rod 291 and the biasing member 289 are assembled, and the assembly can be facilitated.
A seedling picking device 11 for picking out seedlings 7 from seedling trays 8 is provided, and a plurality of seedling trays 8 can be placed on the placing plate 10 in a vertical direction along the inclination direction. The seedlings 7 can be taken out from the lowest seedling tray 8 among the plurality of seedling trays 8 placed on the placing plate 10, and the tray pressing mechanism 282 is arranged to remove the seedlings positioned above the lowest seedling tray 8. To suppress the movement of the tray 8 in the vertical feeding direction Y4.

According to this configuration, it is possible to suppress the load from being applied to the seedling tray 8 from which the seedlings 7 are taken out from the seedling tray 8 on the upper side of the seedling tray 8, and the bending of the seedling tray 8 from which the seedlings 7 are taken out. can be suppressed.
Further, the tray pressing mechanism 282 has a first pressing mechanism 283 and a second pressing mechanism 284 each including a biasing member 289 and a pressing member 290. , and the second pressing 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, the movement of the seedling tray 8 in the longitudinal feeding direction Y4 can be effectively suppressed.
In addition, the transplanter 1 of the present embodiment includes a planting machine 4 having a plurality of planting bodies 12 that reciprocate up and down and plunge into a field 6 to plant seedlings 7 when descending; A traveling body 5 disposed in front, a working machine mounting device 123 for mounting the planting machine 4 on 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 planting machine. 4 around 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 adjusts the first height H1 of the first planting body 12R with respect to the planting surface of the field 6 and the second height H2 of the second planting body 12L with respect to the planting surface to predetermined heights. Therefore, the planting work machine 4 is swung around the rolling axis X1.

According to this configuration, by rocking the planting machine 4 about the rolling axis X1, the height of the first planting body 12R relative to the planting surface and the height of the second planting body 12L relative to the planting surface height can be 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 controls the rolling mechanism 135. The control device 131 controls the height difference between the first height H1 and the second height H2 at the time of planting the seedling 7 when the height difference between the first height H1 and the second height H2 is equal to or greater than a predetermined value. The planting work machine 4 is swung around the rolling axis X1 in a direction to reduce the height difference.
According to this configuration, it is possible to suppress sensitive operation of the work machine 4 with planting, and it is possible to stably perform rolling control for swinging the work machine 4 with planting around the rolling axis X1.

In addition, the planting machine 4 is arranged in front of the first planting body 12R and is for detecting the height of the planting surface (first planting surface 144R) corresponding to the first planting body 12R. A first sensing roller 126R and a second sensing roller 126R for detecting the height of a planting surface (second planting surface 144L) located in front of the first planting body 12R and corresponding to the second planting body 12L. The control device 131 rolls the planting work machine 4 in the direction of decreasing the height difference based on the detection values detected by the first sensing roller 126R and the second sensing roller 126L. Swing around the 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 working machine mounting device 123 has a working machine lifting mechanism 125 that lifts and lowers the planting machine 4, and the control device 131 detects by one of the first sensing roller 126R or the second sensing roller 126L. The planting machine 4 is moved up and down based on the unevenness of the field 6, and the difference in height is calculated from the height of the other sensing roller with respect to the one 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 control of the planting machine 4 can be stably performed. Further, by calculating the height difference between the first height H1 and the second height H2 with reference to one of the sensing rollers, the planting work machine 4 is rocked around the rolling axis X1 for rolling control. can be stably performed.

In addition, when the height difference is less than the predetermined height difference, the height difference is absorbed by the free swing around the rolling axis X1 of the planting work machine 4, and the control device 131 detects that the height difference is greater than or equal to the predetermined height difference. Then, the rolling mechanism 135 is operated.
According to this configuration, it is possible to stably perform rolling control for swinging the planting work machine 4 around the rolling axis X1.

In addition, the planting work machine 4 includes a first roller bracket 146R that supports the first sensing roller 126R so as to be vertically swingable, a first biasing spring 147R that biases the first roller bracket 146R downward, and a first A first sensor mechanism 156R that detects the swing amount of the roller bracket 146R, a second roller bracket 146L that supports the second sensing roller 126L so as to be able to swing up and down, and a second bias that biases the second roller bracket 146L downward. A force spring 147L and a second sensor mechanism 156L for detecting the swing amount of the second roller bracket 146L are provided. and a first detection arm 159R that has a contact piece 161 that is connected to the detection piece of the first roller bracket 146R on the other end side and that abuts on the first roller bracket 146R and that swings in conjunction with the first roller bracket 146R. The two-sensor mechanism 156L has a second height detection sensor 157L and a contactor 161 whose one end is connected to the detector of the second height detection sensor 157L and whose other end contacts the second roller bracket 146L. It also has a second detection arm 159L that swings in conjunction with the second roller bracket 146L.

According to this configuration, it is possible to easily construct a mechanism for detecting the height of the planting surface.
The rolling mechanism 135 includes a rolling motor 136 attached to the work machine mounting device 123, a rolling roller 137 that is rotationally driven by the rolling motor 136, and a body of the planting work machine 4 that is wound around the rolling roller 137 and has one end side. 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 in the machine body width direction K2 of the planting work machine 4 .

According to this configuration, it is possible to easily construct the rolling mechanism 135 for rocking the planting work machine 4 around the rolling axis X1.
Further, the transplanter 1 of the present embodiment includes a transplanting frame 36, a swinging frame 164 supported so as to be vertically swingable with respect to the transplanting frame 36, and a seedling 7 provided on the swinging frame 164 to transfer the seedlings 7 to the field 6. A planting body 12 to be planted, a roller frame 168 supported by a swing frame 164 so as to be vertically swingable, a grounding roller (soil cover wheel 62) attached to the roller frame 168 and grounded on the field 6, and a roller frame 168. a planting depth adjustment mechanism 172 that fixes the interval with the swing frame 164 so as to be changeable and adjusts the planting depth of the seedlings 7 by changing the interval, the planting depth adjustment mechanism 172 , a mechanism frame 173 provided on a swing frame 164, an adjusting motor 174 attached to the mechanism frame 173, a driving mechanism 175 driven by the adjusting motor 174, and a driving mechanism 175 and a roller frame 168 are connected and driven. and a link member 176 that moves up and down in conjunction with the driving of the mechanism 175 .

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

With this configuration, the drive mechanism 175 can be configured with a simple structure.
The first gear 177 is formed by a pinion gear, 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. As shown in FIG.
With this configuration, the drive mechanism 175 can be configured more simply.

In addition, a working machine lifting mechanism 125 for lifting and lowering the transplant frame 36 and a control device 131 for controlling the working machine lifting mechanism 125 are provided. The transplantation frame 36 is moved up and down in a direction to restore the relative position of the swing frame 164 with respect to the transplantation 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 has 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 amount of change in the gap between the roller frame 168 and the swing frame 164 is detected by the detector 182 and fed back to the control device 131, thereby accurately positioning the swing frame 164 in the center of the swing range. can be returned to

The drive mechanism 175 has a first gear 177 driven by the adjust motor 174 and a second gear 178 that meshes with the first gear 177 and rotates to move the link member 176 up and down. , the detector 182 is a potentiometer that detects the amount of rotation of the second gear 178 .
With this configuration, it is possible to easily construct a mechanism for detecting the amount of change in the interval between the roller frame 168 and the swing frame 164 .

In addition, the mechanism frame 173 is erected on the swing frame 164, the adjust motor 174 is attached to the upper portion of the mechanism frame 173, the pinion gear is rotatably attached to the upper portion of the mechanism frame 173, and the sector gear has a It is pivotally supported by the mechanism frame 173 and has a gear portion 178a at its upper portion which meshes with the pinion gear.
With this configuration, the configuration of the driving mechanism 175 can be simplified.

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

According to this configuration, since the planting depth adjusting mechanism 172 can be operated by the operation unit 127 provided near the driver's seat 3, the planting depth can be easily adjusted.
The operation unit 127 also has a planting depth adjustment unit 190 that operates the planting depth adjustment mechanism 172 .
In addition, the planting depth adjustment unit 190 has a rotary operation unit (operation dial 191) that sends an operation signal to the control device 131 by rotating it, and an index 192 that indicates the rotational position of the rotary operation unit (operation dial 191). have.

According to this configuration, the planting depth can be easily adjusted by rotating the rotary operation part (operation dial 191). Further, since the index 192 indicating the rotational position of the rotary operation portion (operation dial 191) is provided, the operation of the rotary operation portion (operation dial 191) can be easily performed.
In addition, the rotary 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 increasing the planting depth of the seedlings 7 by rotating it in one direction. , sends a second operation signal to the control device 131 to operate the planting depth adjustment mechanism 172 in the direction of shallowing the planting depth of the seedling 7 by rotating it in the other direction, and the planting depth adjustment unit 190 rotates It has a depth display portion 193 that indicates the operation direction of the operation portion (operation dial 191).

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

With this configuration, the planting depth of the first planting body 12R and the second planting body 12L can be finely adjusted. More specifically, when the seedlings 7 planted by the first planting body 12R and the seedlings 7 planted by the second planting body 12L are different in planting depth with respect to the ridges of the same height, the angle adjuster 194 rolls the ridges. The planting depth can be finely adjusted by swinging the planting machine 4 around the axis X1.

Also, the angle adjuster 194 has a first switch 195 that sends a first lowering signal to the controller 131 and a second switch 196 that sends a second lowering signal to the controller 131 .
According to this configuration, the operation of lowering the first planted body 12R arrangement side of the planting work machine 4 and the operation of lowering the second planted body 12L arrangement side can be clarified.
The planting machine 4 includes a working machine lifting mechanism 125 controlled by the control device 131 , and the planting machine 4 is supported by the transplanting frame 36 that is lifted and lowered by the working machine lifting mechanism 125 , and the planting in the field 6 is supported by the transplanting frame 36 . a sensing roller 126 that moves up and down following the surface to detect the height of the planting surface; The operation unit 127 has a transplant height adjusting unit 197 for correcting the difference in sinking amount between the sensing roller 126 and the soil covering wheel 62 .

According to this configuration, the difference in sinking amount between the sensing roller 126 and the covering soil wheel 62 can be corrected.
In addition, the transplantation section height adjustment section 197 includes a raise switch 198 for sending a correction value for raising the grafting 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 . have

According to this configuration, the sinking amount of the sensing roller 126 and the cover soil wheel 62 can be corrected by raising or lowering the transplant frame 36 .
In addition, the transplanter 1 of the present embodiment includes the main frame 37, the first seedling placement table 9R and the second seedling which are arranged side by side in the body width direction K2 and supported by the main frame 37 so as to be movable in the body width direction K2. A mounting base 9L, a connecting member 235 connecting the first seedling mounting base 9R and the second seedling mounting base 9L, and a first seedling picking-out for picking out the seedling 7 from the seedling tray 8 mounted on the first seedling mounting base 9R. From the first transplanting 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 the seedling tray 8 placed on the second seedling placing table 9L Attached to a second transplanting unit 63L having a second seedling extracting device 11L for extracting seedlings 7 and a second planting device 35L for planting the seedlings 7 extracted by the second seedling extracting device 11L in the field 6, and the first transplanting unit 63R. and a lateral feeding mechanism 236 that laterally feeds the first seedling placement table 9R in the body width direction K2, and the first transplanting unit 63R and the second transplanting unit 63L are arranged on the main frame 37 independently of each other in the body width direction. The first seedling placement table 9R and the first transplanting unit 63R are supported in a position-adjustable manner in the direction K2, and are connected via a lateral feed mechanism 236 so as to be integrally position-adjustable in the body width direction K2, The second seedling platform 9L is attached to the connecting member 235 so as to be positionally adjustable in the body width direction K2.

According to this configuration, the first transplanting unit 63R and the second transplanting unit 63L are independently position-adjusted in the machine body width direction K2, and the first seedling mounting base 9R and the second seedling mounting base 9L are arranged in the first seedling mounting base 9R and the second seedling mounting base 9L. It moves along with the position adjustment of the transplantation unit 63R. After adjusting the position of the first transplanting unit 63R, the position of the second seedling platform 9L is adjusted with respect to the connecting member 235 in the body width direction K2. Thereby, the spacing between the first transplanting unit 63R and the first seedling mounting table 9R and the second transplanting unit 63L and the second seedling mounting table 9L can be adjusted without using a complicated interlocking mechanism.

In addition, the driving main shaft 71 is arranged in front of the first transplanting unit 63R and the second transplanting unit 63L so as to extend in the body width direction K2 and is supported by the main frame 37 to transmit power to the lateral feed mechanism 236. The first transplanting unit 63R has a first unit frame 38R to which the first seedling extracting device 11R and the first planting device 35R are attached, and the second transplanting unit 63L includes the second seedling extracting device 11L and the second seedling extracting device 11L. 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 driving 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 has a first connecting plate 61R arranged behind the first unit frame 38R and a second connecting plate 61L arranged behind the second unit frame 38L. has a first mounting plate 76R mounted on the first connecting plate 61R so as to be positionally adjustable in the body width direction K2, and a second unit frame 38L is mounted on the second connecting plate 61L so as to be positionally adjustable in the body width direction K2. It has a second mounting plate 76L attached.

According to this configuration, it is possible to simplify the structure for adjusting the spacing between the first transplanting unit 63R and the first seedling mounting table 9R and the second transplanting unit 63L and the second seedling mounting table 9L.
In addition, the main frame 37 has rail members (first rail 56, second rail 58) extending in the width direction K2 of the machine body, and the first seedling placement table 9R is movable in the width direction K2 of the machine body on the rail member. It has a first roller 234R to be supported 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. It has a second stay plate 227L attached to the connecting member 235 .

According to this configuration, it is possible to simplify the structure for adjusting the spacing between the first seedling placement table 9R and the second seedling placement table 9L.
In addition, the transplanter 1 of the present embodiment includes a planting machine 4 and a traveling body 5 that travels with the planting machine 4 mounted thereon. 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 provided at the front of the main frame 37 and extending in the body width direction K2, and a drive shaft. and at least one irrigation pump 82 that is driven by the power from 71 to irrigate the seedlings 7, and the driving main shaft 71 has a power take-off part 80 for taking out power on the end side in the body width direction K2. The irrigation pump 82 is arranged in front of the power take-off part 80 and vertically inward of the main frame 37 in the body width direction K2.

According to this configuration, the irrigation pump 82 hits an obstacle by arranging the irrigation pump 82 in front of the power take-off part 80 and vertically inward of the main frame 37 from the end of the main frame 37 in the fuselage width direction K2. can be suppressed.
Also provided is an irrigation transmission mechanism 99 that transmits power from the power take-off part 80 to the irrigation pump 82. The irrigation pump 82 is formed by a reciprocating pump having a cylinder 97 and a piston 98 that reciprocates within the cylinder 97. 99 is a first irrigation sprocket 100 attached to the power take-off part 80, a second irrigation sprocket 101 arranged 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; have.

According to this configuration, it is possible to simplify the structure of the irrigation transmission mechanism 99 that transmits power from the power take-off portion 80 to the irrigation pump 82 .
The main frame 37 also has a support bracket 59 that supports the power take-off section 80 and a pump bracket 110 that mounts the irrigation pump 82. The pump bracket 110 includes a first member 110A mounted on the support bracket 59 and a second member 110A. A second member 110B fixed to the upper portion of the first member 110A, a third member 110C fixed to the front portion of the second member 110B so as to protrude upward, and a fourth member 110D fixed to the upper portion 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 arranged on the side of the third member 110C and the upper part is attached to the fourth member 110D, and the irrigation transmission mechanism 99 has an irrigation drive shaft 112 rotatably supported around an axis extending in the body width direction K2 in the fifth member 110E, and the second irrigation sprocket 101 and the rotating member 102 are integrated with the irrigation drive shaft 112. rotatably mounted.

According to this configuration, the irrigation pump 82 and the pump bracket 110 can be assembled compactly in front of the power take-off section 80 .
A plurality of planting bodies 12, irrigation pumps 82, rotating members 102, and connecting links 103 are provided. The irrigation pump 82 includes a first irrigation pump 82R that supplies water to the first planted body 12R and a second irrigation pump 82L that supplies water to the second planted body 12L. 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 are included. and a second connection link 103L that connects the second rotary 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 110E to one side and the other side of the body width direction K2, and the fifth member 110E protrudes from one side and the other side of the fifth member 110E. 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 portion 81 different from the power take-off portion 80 on the end side opposite to the power take-off portion 80 .
According to this configuration, for example, power can be transmitted to various devices separately attached to the transplanter 1 to drive the various devices.

In addition, a planting lifting mechanism 167 for lifting the planted body 12 is provided, and the planting lifting mechanism 167 is rotatably supported by a rotatable first rotating case 201 and the free end side of the first rotating case 201. It has a second rotary case 202 and a support plate 121 that is attached to the free end side of the second rotary case 202 and supports the planting body 12 , and interlocks with the rotation of the first rotary case 201 to rotate the second rotary case 201 . By rotating the rotary case 202 in the opposite direction to the first rotary case 201, the planted body 12 can be moved up and down. there is

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

In addition, the transplanter 1 of the present embodiment includes a planting machine 4 and a traveling body 5 that travels with the planting machine 4 mounted thereon. At least one planting body 12 to be planted and a leveling plate 299 arranged in front of the planting body 12 and leveling the planting surface of the field 6 are provided.
According to this configuration, the seedlings 7 can be favorably planted in the field 6 by leveling the planting surface of the field 6 with the leveling plate 299 arranged in front of the planting body 12 .

In addition, 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, and the first planting body 12R and the second planting body 12R whose spacing in the body width direction K2 is adjustable. Including the body 12L, the width W2 of the leveling plate 299 in the body width direction K2 is obtained when the row spacing W1 of the seedlings 7 planted with 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, it is not necessary to change the position of the leveling plate 299 corresponding to the first planting body 12R and the second planting body 12L even if the row spacing W1 of the seedling 7 is adjusted.
In addition, a work machine mounting device 123 that mounts the planting work machine 4 to the traveling body 5 so as to be swingable around the rolling axis X1 extending in the longitudinal direction K1 of the machine body, and a work machine mounting device 123 that mounts the planting work machine 4 around the rolling axis X1. and a rolling mechanism 135 for swinging, the rolling mechanism 135 having 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. The planting work machine 4 is swung around the rolling axis X1 in order to set the height H2 to a predetermined height.

According to this configuration, by rocking the planting machine 4 about the rolling axis X1, the height of the first planting body 12R relative to the planting surface and the height of the second planting body 12L relative to the planting surface height can be 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 controls the rolling mechanism 135. When the seedling 7 is planted, if the difference between the first height H1 and the second height H2 is greater than or equal to a predetermined value, the control device 131 controls the rolling mechanism 135. The planting work machine 4 is swung around the rolling axis X1 in the direction of decreasing the height difference.
Further, a plurality of sensing rollers 126 for detecting the height of the planting surface of the field 6 are provided, 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 for detecting the height of the planting surface of the second planting body 126L, and a second sensing roller 126R for detecting the height of the planting surface corresponding to the second planting body 12L. The control device 131 rotates the planting work machine 4 in the direction of decreasing the height difference based on the detection 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 so as to swing around the center X1.

With this configuration, it is possible to improve the accuracy of height detection by the first sensing roller 126R and the second sensing roller 126L.
In addition, the first sensing roller 126R and the second sensing roller 126L can be adjusted in the machine width direction K2 as the spacing between the first planted body 12R and the second planted body 12L is adjusted. The width W2 in the body 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 body width direction K2 when the row spacing W1 is set to the maximum row spacing W1b. is formed in

According to this configuration, it is not necessary to change the position of the leveling plate 299 corresponding to the first sensing roller 126R and the second sensing roller 126L even if the row spacing W1 of the seedlings 7 is adjusted.
In addition, the transplanter 1 of the present embodiment is placed on the first seedling placing table 9R and the second seedling placing table 9L on which the seedling tray 8 is placed, and the first seedling placing table 9R and the second seedling placing table 9L. and a vertical feeding mechanism 244 for feeding the seedling tray 8 in the vertical direction, the vertical feeding mechanism 244 being provided over the first seedling placing table 9R and the second seedling placing table 9L and feeding 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 provided on the first seedling placement table 9R and vertically feeding the seedling tray 8 placed on the first seedling placement table 9R. a second vertical feed operating shaft 253L provided on the second seedling mounting table 9L for vertically feeding the seedling tray 8 placed on the second seedling mounting table 9L; 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 longitudinal feed main shaft 252 to the 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 power is intermittently transmitted from the vertical feed main shaft 252 to the second vertical feed operating shaft 253L. Since it is provided with the second longitudinal feed clutch 262L that enables transmission, any of the seedling tray 8 placed on the first seedling placement table 9R and the seedling tray 8 placed on the second seedling placement table 9L can be selected. Only the seedling tray 8 can be driven vertically.

Further, the vertical feed main shaft 252 has a rotating body 255 to which vertical feeding power is transmitted, and a shaft body 256 fixed to the rotating body 255 and provided over the first seedling mounting base 9R and the second seedling mounting base 9L. The first longitudinal feed operating shaft 253R has a first input portion 258R that is fitted to the shaft body 256 so as to be relatively rotatable and is adjacent to the rotating body 255, and the first longitudinal feeding clutch 262R is provided on the rotating body 255. a clutch body 264 fitted to the first input portion 258R so as to be axially movable and integrally rotatable; and a clutch body 264 provided in the clutch body 264 so that the clutch body 264 is axially movable It has a driven meshing portion 265 that engages and disengages with the drive meshing portion 263 .

According to this configuration, the vertical feeding power for longitudinally feeding the seedling tray 8 placed on the first seedling placing table 9R can be intermittent, and the power can be transmitted to the second seedling placing table 9L. can be formed into
The shaft body 256 is a combined body that joins the first shaft 256A on the side of the first seedling platform 9R, the second shaft 256B on the side of the second seedling platform 9L, and the first shaft 256A and the second shaft 256B. 257.

According to this configuration, the assembly of the vertical feed main shaft 252 can be facilitated.
In addition, the second seedling placement table 9L is arranged side by side with the first seedling placement table 9R in the machine width direction K2, and the distance between the second seedling placement table 9L and the first seedling placement table 9R can be adjusted in the machine width direction K2. has an extension shaft portion 256a projecting from the second seedling placement table 9L to the side opposite to the first seedling placement table 9R, and the second vertical feed operating shaft 253L is fitted to the extension shaft portion 256a so as to be relatively rotatable. The second vertical feed clutch 262L is axially movable and integrally rotatable with the extension shaft portion 256a, and is attached to the second seedling platform 9L. and a clutch shifter 272 that is axially movably and integrally rotatably fitted to the second input portion 258L and that is engaged with and disengaged from the rotating portion 271 by axially moving.

According to this configuration, the second vertical feed clutch 262L can intermittently switch the vertical feed power for longitudinally feeding the seedling tray 8 placed on the second seedling placement table 9L, and the first seedling placement table 9R can receive the first seedling placement table 9R. It is possible to form a structure that permits adjustment of the interval between the two seedling mounting bases 9L.
The first vertical feed clutch 262R is provided on the opposite side of the first seedling placement table 9R from the second seedling placement table 9L.

According to this configuration, the first seedling placement table 9R and the second seedling placement table 9L can be brought close to each other.
In addition, the transplanter 1 of the present embodiment includes a planting machine 4 for planting seedlings 7 in a field 6, a traveling body 5 for traveling with the planting machine 4 mounted thereon, and a driver's seat mounted on the traveling body 5. 3, the planting work machine 4 includes a mounting plate 10 on which the seedling tray 8 is placed in a downwardly inclined state, and a vertical feeder on which the seedling tray 8 is vertically fed downward along the mounting plate 10. A feeding mechanism 244, a seedling pick-up device 11 for picking out seedlings 7 from seedling trays 8 on the mounting plate 10, and the seedling trays 8 after the seedlings 7 have been picked up by the seedling pick-up device 11 are turned over and placed on the mounting plate 10. It has a reversing guide 13 that guides it to the rear side, and an empty tray guide 14 that guides the seedling tray 8 reversed by the reversing guide 13 to the upper part of the rear surface of the placing plate 10. It has an empty tray receiving part 15 arranged between the tray guide 14 and receiving an empty seedling tray 8 delivered from the empty tray guide 14.例文帳に追加

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 portion 15 provided between the driver's seat 3 and the empty tray guide 14. Collection of the tray 8 can be easily performed.
In addition, 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 portion 15 is arranged above the front step 29a and below the driver's seat 3. ing.

According to this configuration, the empty tray receiving portion 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 delivered from the empty tray guide 14 can be guided to the empty tray receiving section 15 by the upper guide section 14c.

Further, the upper guide portion 14c is inclined downward toward the front.
According to this configuration, the empty seedling tray 8 can be favorably guided to the empty tray receiving section 15 by the upper guide section 14c.
The rear end of the empty tray receiving portion 15 is positioned below the front end of the upper guide portion 14c.

According to this configuration, it is possible to prevent the empty seedling tray 8 from falling from between the empty tray receiving portion 15 and the empty tray guide 14 .
Further, the empty tray receiving section 15 has at least one rear step 33 on which the operator puts his/her feet.
According to this configuration, the seedling tray 8 can be easily replenished on the mounting plate 10 by putting a foot on the rear step 33 . Further, by using the rear step 33 as the empty tray receiving portion 15, it is possible to use the same member.

In addition, the planting machine 4 has a plurality of seedling platforms 9 including the placement plate 10, the vertical feed mechanism 244, the reversing guide 13, and the empty tray guide 14, and the plurality of seedling platforms 9 extend in the machine width direction K2. The empty tray receiver 15 is provided in front of the first seedling platform 9R and the second seedling platform 9L. there is
According to this configuration, empty seedling trays 8 ejected from the plurality of seedling trays 9 can be easily collected.

In addition, the empty tray receiving portion 15 has a plurality of rear steps 33 on which the operator puts his/her feet. 2 and a second rear step 33L arranged in front of the seedling platform 9L.
According to this configuration, by providing the rear step 33 corresponding to the first seedling mounting base 9R and the second seedling mounting base 9L, the seedling tray 8 for each of the first seedling mounting base 9R and the second seedling mounting base 9L is provided. can be easily replenished.

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

4 planting machine 5 running body 6 field 7 seedling 12 planting body 12R first planting body 12L second planting body 123 work machine mounting device 126 sensing roller 126R first sensing roller 126L second sensing roller 131 control device 135 Rolling mechanism 299 Leveling plate H1 First height H2 Second height K1 Machine body longitudinal direction K2 Machine body width direction W1 Row spacing W1b Maximum row spacing W2 Width W3 Distance W4 Distance X1 Rolling axis

Claims (6)

a planting machine;
a traveling body that travels with the planting work machine mounted thereon;
with
The planting machine is
a plurality of planting bodies for planting seedlings in a field;
a leveling plate disposed in front of the plurality of planting bodies for leveling the planting surface of the field;
with
The plurality of planting bodies are arranged side by side in the width direction of the machine body and the spacing in the width direction of the machine body is adjustable,
The leveling plate is provided so as to extend over the plurality of planting bodies,
The width of the leveling plate in the body width direction is the planting body at one end in the body width direction of the plurality of planting bodies when the distance between rows of seedlings planted by the plurality of planting bodies is set to the maximum row spacing. and the planting body at the other end, the width of which is wider than the distance between the outer ends in the width direction of the machine body . a planting machine;
a traveling body that travels with the planting work machine mounted thereon;
with
The planting machine is
a plurality of planting bodies for planting seedlings in a field;
a leveling plate disposed in front of the planting body for leveling the planting surface of the field;
with
The plurality of planting bodies includes a first planting body and a second planting body arranged side by side in the body width direction and having an adjustable interval in the body width direction,
The width of the leveling plate in the width direction of the body is the same as that of the first planting body and the second planting body when the distance between the rows of seedlings planted in the first planting body and the second planting body is set to the maximum row spacing. A transplanter formed to have a width wider than the distance between the outer ends in the machine width direction of the second planting body. a planting machine;
a traveling body that travels with the planting work machine mounted thereon;
a work machine mounting device for mounting the planting work machine on the traveling body so as to be swingable around a rolling axis extending in the longitudinal direction of the machine body;
a rolling mechanism for rocking the planting machine about the rolling axis;
with
The planting machine is
a plurality of planting bodies for planting seedlings in a field;
a leveling plate disposed in front of the planting body for leveling the planting surface of the field;
with
The plurality of planted bodies includes a first planted body and a second planted body arranged side by side in the body width direction,
The leveling plate is provided so as to extend over the first planting body and the second planting body, and the rolling mechanism has a first height of the first planting body with respect to the planting surface of the field; A transplanter that rocks the planting work machine about the rolling axis in order to set the second height of the second planting body with respect to the planting surface to a predetermined height. A control device that controls the rolling mechanism,
When the difference in height between the first height and the second height is equal to or greater than a predetermined value when the seedling is planted, the control device moves the planting machine in a direction to reduce the difference in height. 4. The transplanter according to claim 3, wherein the transplanter is rocked around the rolling axis. Equipped with multiple sensing rollers that detect the height of the planting surface of the field,
The plurality of sensing rollers are arranged in front of the first planting body and detect the height of the planting surface corresponding to the first planting body, and the second planting body. a second sensing roller positioned forward of the second sensing roller for detecting the height of the planting surface corresponding to the second planting body;
The control device swings the planting machine around the rolling axis in a direction to reduce the height difference based on the detection values detected by the first sensing roller and the second sensing roller. let
5. The transplanter according to claim 4, wherein said first sensing roller and said second sensing roller are arranged behind said leveling plate. a planting machine;
a traveling body that travels with the planting work machine mounted thereon;
a plurality of sensing rollers for detecting the height of the planting surface of the field;
with
The planting machine is
a plurality of planting bodies for planting seedlings in a field;
a leveling plate disposed in front of the planting body for leveling the planting surface of the field;
with
The plurality of planting bodies includes a first planting body and a second planting body arranged side by side in the body width direction and having an adjustable interval in the body width direction,
The leveling plate is provided so as to extend over the first planting body and the second planting body,
The plurality of sensing rollers are arranged in front of the first planting body and detect the height of the planting surface corresponding to the first planting body, and the second planting body. a second sensing roller positioned forward of the second sensing roller for detecting the height of the planting surface corresponding to the second planting body;
The first sensing roller and the second sensing roller are adjustable in the width direction of the machine body as the spacing between the first planted body and the second planted body is adjusted,
The width of the leveling plate in the width direction of the body is the same as that of the first sensing roller and the first sensing roller when the distance between the rows of the seedlings planted by the first planting body and the second planting body is the maximum. 2. A transplanter formed to have a width wider than the distance between the outer ends in the body width direction of the sensing roller.

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