KR101092081B1 - Seedling-transplanting machine - Google Patents

Abstract

And a seedling supply unit disposed on the body main body, and a seedling mounting stage disposed on the side of the seedling supply unit, wherein the seedling mounting stage is horizontally rotatable, and configured to move up and down, the seedling supplying unit; In the seedling implanter of the structure which rotated to the said seedling supply part side, and when the said seedling supply part and the said seedling mounting base overlap and are arrange | positioned up and down and arrange | positioned, the seedling mount base falls, it hits the seedling supply part below. It may damage it. In order to prevent this, the seedling implanter was provided with a regulating means for regulating the lowering of the seedling mounting table rotated to the upper position of the seedling supply unit to a predetermined height.

Description

Seedling-transplanting machine

TECHNICAL FIELD This invention relates to the structure of the seedling mounting base of a seedling transplanter, and the shutter apparatus of a seedling supply part in detail about the seedling transplanter which transplants seedlings, such as a vegetable.

Background Art Conventionally, seedling transplanters are known which insert seedlings into transplant openings (so-called nails) from seedling supply units provided at the rear of the body, and move the transplant openings into the ridges to transplant the seedlings. have. The seedling transplanter is configured to include a seedling supply unit at the back of the body.

And for example, in the seedling implanter disclosed by Unexamined-Japanese-Patent No. 11-332316, the said seedling supply part equips one side with a seedling mounting base for mounting a seedling in the base body side, and it is equipped with a seedling mounting stand by an operator's hand. It is comprised so that the said seedling may supply to a seedling supply part.

However, in such a structure, the quantity of seedlings which can be mounted in a seedling mounting base is restrict | limited. For this reason, it is necessary to move a seedling transplanter from a paddy field to a storage location of seedlings in order to supply seedlings during transplanting work, and work efficiency is falling.

In order to cope with this problem, by providing a plurality of seedling mounting tables, the amount of seedlings that can be mounted can be increased, and work efficiency can be improved. In this case, it is easy for an operator to supply seedlings to a seedling supply part by configuring so that a seedling mount may be moved and a position can be changed during a transplantation operation.

However, in such a configuration, when the seedling mount moves, the seedling mount comes into contact with other members of the seedling supply portion, which may cause damage. In addition, during the work, it is necessary to fix the seedling mount, and the operation is complicated in order to perform the fixing and releasing operation while avoiding contact with the other members of the seedling mount, which may cause malfunction of the operator. There was a concern.

Moreover, conventionally, the structure which has a shutter opening-and-closing apparatus is provided in the seedling supply container which supplies a seedling to a transplantation opening in the seedling supply part of a seedling transplanter. For example, in the seedling transplanter disclosed in Japanese Utility Model Application Publication No. 57-48329 or Japanese Utility Model Application Publication No. 2-138505, the seedling is supplied from the upper part to the transplant opening opening that has reached the seedling supply position. A seedling conveyance port is provided, and the shutter which can open and close the opening part of this seedling conveyance port lower end is provided. And it is comprised so that a shutter may be opened by providing the support member which keeps the said shutter closed, and releasing support by the said support member when a transplantation opening machine reaches a seedling supply position.

However, in such a structure, the control structure for the operation linkage of a transplantation opening machine and a seedling supply part becomes complicated, and the economy of a seedling implanter and the stability of operation were deteriorated.

An object of the present invention is to prevent the breakage of the seedling supply part in a seedling transplanter for transplanting seedlings such as vegetables, and to more stably supply the seedlings by the seedling supply part.

In order to achieve this object, a seedling supply unit disposed in the gas main body and a seedling mounting station disposed on the side of the seedling supply unit are provided, and the seedling mounting unit can be rotated horizontally and can be moved up and down. Thus, in the seedling implanter having a configuration in which the seedling supply unit and the seedling mounting platform rotated to the seedling supply unit side are disposed above and below, the lowering of the seedling mounting platform rotated to the upper position of the seedling supply unit to the seedling transplanter at a predetermined height. Establish regulatory measures to regulate.

In such a configuration, when the seedling mounting table is rotated to an upper position of the seedling supply unit, since the lowering of the seedling mounting table is regulated to a predetermined height by a restricting means, the seedling mounting table may come into contact with the lower seedling supplying part. Also, when the seedling mount is rotated to a position other than the upper position of the seedling supply unit, the lowering regulation of the seedling mount by the regulating means is eliminated, and the height position of the seedling mount can be adjusted to be easy for the operator to work. ， Operation is improved.

In addition, if the seedling mounting table rotated to the seedling supply side is lowered and supported by a predetermined height by a regulating means, the seedling mounting platform does not fall incorrectly, and the collision with the seedling supply unit below is prevented beforehand. This is improved.

In addition, in order to fix the position of the support frame which supports a seedling mount by tightening a fastener firmly using a tool, such as a spanner, so that none of the seedling mounts rotated to the seedling supply side may fall in a bay. there was. However, if the seedling mounting base rotated to the seedling supply part side is supported by predetermined | regulated height like a this invention, it will not fall any more and it can reduce the tightening strength by a fastener. Therefore, the fastener can be tightened by hand, such as a knob screw. As a result, a tool such as a spanner is unnecessary to fix the position of the seedling mount, and the operation is improved.

Moreover, in this invention, in the seedling transplanter which transplants a seedling in connection with the running of a body, the seedling supply which supplies a seedling to a transplantation opening machine which moves up and down and transplants a seedling, and the said transplantation opening machine is supplied. The seedling supply part is configured to rotate the seedling conveyance port connected in an ellipse shape, and to drop the seedling at an appropriate position of the movement trajectory that becomes the elliptic shape of the seedling conveyance port. A seedling implanter of the type that is taken in by air and transplanted into a rice field, wherein the seedling conveying port is provided with a shutter for opening and closing the bottom, and the shutter is forcibly elastically biased in the opening direction by the elastic biasing means.

With this arrangement, the shutter which opens and closes the bottom of the seedling conveying port can be reliably opened, thereby preventing the seedling posture from being distracted during sorghum and at the same time The operation timings coincide. Thus, the transplant becomes more stable.

1 is a side view of the seedling transplanter 1.

2 is a side view of the seedling portion 8.

3 is a plan view similarly.

4 is a rear view similarly.

FIG. 5: is a rear view of the seedling part 8 demonstrating the fall regulation of the 1st seedling mounting base 81L by the stopper 89. As shown in FIG.

6 is a plane cross-sectional view in the same manner.

FIG. 7 is a rear view of the first seedling mounting table 81L including the stopper 90 having a separate configuration.

FIG. 8: is a rear view of the 1st seedling mounting base 81L provided with the stopper 91 of another structure.

9 is a side view of the tank stand 95.

10 is a front view similarly.

11 is a plan view similarly.

12 is a rear view of the clay wheel support frame 191.

13 is a plan view of the covering wheel 22.

14 is a side view similarly.

15 is a rear view of the ridge sensor roller 50 · 50.

FIG. 16: is a side view which shows the whole structure of the seedling transplanter 101 in 2nd Example.

17 is a plan view similarly.

18 is a partial plan view of the seedling supply unit 107.

19 is a side view illustrating the configuration of the seedling carrier 150.

20A is a plan view illustrating the configuration of the shutter 145.

20B is a side view similarly.

FIG. 21: is a partial top view which shows the structure of the guide rail 139. FIG.

22 is a plan view showing the entire guide portion.

FIG. 23: is a partial side view which shows the operating state of the seedling carrier 150. FIG.

24 is a partial plan view of an operation unit.

25A is a rear view of the main shift converter.

25B is a plan view similarly showing an operation position.

26 is a plan view of the rear portion of the mission case 104.

27 is a rear view of the speed shift portion.

It is a partial plan view of a handle part, a seedling carrier, and a mission rear part.

29 is a partial side view similarly.

30 is a partial side view of the transmission portion and the hydraulic switching portion.

31 is a side view of the day shift portion.

32 is a right side view of the mission case 104 showing the configuration of the indicator 366 in another embodiment.

33 is a right side view of the mission case 104 showing the configuration of the indicator 366 according to still another embodiment.

34 is a circuit diagram showing the configuration of the operation means of the hydraulic cylinder 228.

In order to describe the present invention in more detail, it will be described according to the accompanying drawings.

In the following, a first embodiment of a seedling transplanter according to the present invention will be described.

First, the whole structure of the seedling implanter 1 is demonstrated.

As shown in FIG. 1, seedling transplanter 1 is seeded 46 into a transplant opening opening 49 from a seedling supply unit 7 provided at the back of the body, and the transplant opening opening ( 49 is a farm worker for transplanting the seedlings 46 by moving into the ridges 45. The engine 3 is mounted on the engine frame 24 constituting the front of the chassis, and the mission is placed on the front and rear center portions of the chassis. The case 4 is disposed, the handle frame 6 which becomes a handle member from the upper part of the rear of the chassis to the rear side is provided in the horizontal direction, and the seedling part 8 is supported on the front and rear middle parts of the handle frame 6. Together, the seedling supply part 7 is arrange | positioned, the back part of the said handle frame 6 is comprised as the drive operation part 9, and various operation levers are arrange | positioned.

A front wheel pivot support shaft 10 is provided on the front part of the chassis in the horizontal direction, and the front wheel support arms 11 and 11 serving as front wheel supports respectively at the left end and the right end of the front wheel pivot support shaft 10. The upper end is attached. The left and right front wheel support arms 11 · 11 are configured to be rotatable with respect to the chassis, and the front wheels 12, which are driven wheels, are rotatably attached to the lower ends of the front wheel support arms 11, respectively.

Further, the rear wheel drive shafts 15 · 15 protrude from the left and right sides to the mission case 4. The rear wheel support pipe 21 is arrange | positioned at the outer side of each rear wheel drive shaft 15, respectively, and the upper end part of the chain case 16 used as a rear wheel support body is fixed and provided in the outer end of each rear wheel support pipe 21. . The left and right chain cases 16 · 16 are configured to be rotatable with respect to the chassis, and the rear wheels 17 serving as driving wheels are supported at the lower ends of the chain cases 16. Above the rear wheel support pipe 21 on the left side, a tank stand 95 for mounting the water tank 93 · 93 is disposed.

And the transplant part 40 is arrange | positioned under the seedling supply part 7, The said transplant part 40 raises and lowers the transplant opening opening 49, and receives the seedling 46 from the seedling supply part 7 in a top position. The seedlings are dropped into the ridges 45 by opening the transplanting opening 49 in the lower position, and the soil is collected in the root portion of the seedlings 46 by the clay wheel 22 disposed behind the seedlings. It is structured to cover by transplantation.

The seedling supply part 7 is provided with the structure which continuously rotates the seedling conveyance body connected in the long ellipse shape of right and left horizontally. The seedling carrier comprises a seedling conveying port 48 and a base 41 with a port, and the base 41 with a port holds and rotates the seedling conveying port 48 into which the seedling 46 is inserted. And a water system part is provided in the suitable position of the movement trace which consists of an elliptical shape of a seedling conveyance body, the seedling 46 is dropped from the said water system part, and a seedling ( 46) is input.

Also, between the rear wheels 17 · 17 of the left and right, a gyro sensor roller 50 · 50 for detecting gyrus height is arranged, and the support arm 53 is rotated on the engine frame 24 supporting the engine 3. It is attached so that it may be, The gyro sensor roller 50 * 50 is rotatably attached to the lower end of the said support arm 53. As shown in FIG.

Next, the structure of the seedling part 8 is demonstrated.

As shown in FIG.2 and FIG.3, the seedling part 8 is the 1st seedling mounting base 81L * 81R which is the main seedling mounting base arrange | positioned at the left and right sides of a base body, and the agent which is the preliminary seedling mounting stand arrange | positioned at right and left center. Two seedling mounting tables 82 are provided, and each is supported on the handle frame 6.

The left and right first seedling mounts 81L and 81R are horizontally disposed at the same height position or almost the same height position, and the second seedling mounts 82 are the first seedling mounts 81L and 81R. It is arrange | positioned horizontally, making it one step higher.

As shown in FIG. 3, the handle frame 6 includes a right frame 6R, a middle frame 6M, and a left frame 6L, and the left frame 6L is located at the left and right centers of the body. The right frame 6R is disposed at the right side of the body, and the left frame 6L and the right frame 6R are integrally formed in a 'c' shape with the front side opening when viewed in a plan view. have. The middle frame 6M is disposed between the left and right portions of the first half of the left frame 6L and the first half of the right frame 6R, and the front end of the right frame 6R and the front end of the middle frame 6M are mission cases ( It is fixed and installed on both left and right sides of 4). And the support plate 60R is hypothesized between the front-rear center part of the right side frame 6R and the rear part of the middle frame 6M, and the drive case (not shown) of the seedling supply part 7 is provided in the lower part of the said support plate 60R. It is installed vertically.

In addition, the support plate 60L is fixed and installed in the left frame 6L from the front and rear center to the left side (outward direction), and on the lower surface of the support plate 60L and the lower surface of the support plate 60R, The upper part of the rear end of a pair of left-right frame 5 * 5 which comprises a chassis, respectively, is being fixed and provided (refer FIG. 1). And the support frame 69 extended to the left side is installed in the middle frame 6M and the left frame 6L, The seedling supply part 7 is supported by this support frame 69 and the support plate 60R * 60L. ) Is supported.

The drive shaft 76 protrudes upward from the drive case installed perpendicular to the support plate 60R, and the drive sprocket 77 is fixed and provided on the drive shaft 76. In addition, an attachment frame 73 is hypothesized between approximately left and right center portions of the support plate 60L and the left portion of the support frame 69, and a support shaft 78 protruding upward from the attachment frame 73 is seated. The driven sprocket 79 is fixed and provided to the support shaft 78. The drive sprocket 77 and the driven sprocket 79 are arranged approximately between the left and right widths of the body, and are connected to the drive sprocket 77 and the driven sprocket 79 at endless end portions 41. ) Are wound. The seedling conveyance port 48 into which one seedling is inserted is respectively maintained in the base part 41 with a port. Power is transmitted to the drive sprocket 77 from the mission case 4 by using a transmission mechanism such as a chain. Thus, the seedling supply part 7 is comprised and the 1st seedling mounting base 81L * 81R is arrange | positioned at the left and right sides of the said seedling supply part 7.

When the left end (outer end) of the support frame 69 and the front and rear center portions of the right frame 6R are provided with support portions 69e and 6e, respectively, viewed from each side from the respective support portions 69e and 6e, 'L' shape seedling mount frame 83L, 83R is provided diagonally forward, and the 1st seedling mount base 81L (81R) is attached on the said seedling mount frame 83L (83R). .

In this first seedling mounting base 81L (81R), a rectangular frame 81a long in the front-rear direction and a rectangular frame 81b long in the left-right direction are joined to each other at a center position (weight center position), As seen from, it is formed in a roughly '十' shape. In one frame 81a, the attachment plate 81c is hypothesized between the front and rear center portions of a pair of long side portions that face each other. In addition, the front and rear ends 81d and 81d and the left and right ends 81e and 81e of the first seedling mounting base 81L (81R) are bent upwards, respectively, and are engaged with the four bent portions to form a rectangular shape. The seedling placement tray is placed on the frames 81a and 81b, and the seedlings 46 · 46 are arranged vertically and horizontally on the seedling placement tray.

As shown in FIG. 2 and FIG. 4, the seedling base frame 83L (83R) is equipped with the vertical part 83a and the horizontal part 83b extended forward from the upper end of the said vertical part 83a. And a lower portion of the vertical portion 83a is inserted into the attachment hole 69f (6f) of the pipe-shaped support portion 69e (6e) of the frame 69 (6R), and can be fastened by hand such as a knob screw. It is fastened using 85.

When the fastener 85 is loosened by hand, the vertical portion 83a of the seedling mount frame 83L (83R) is attached to the attachment hole 69f (6f) of the support portion 69e (6e) of the frame 69 (6R). Freely lifting up and down freely, and also freely horizontally rotating left and right, the height position and orientation of the seedling mounting frame (83L (83R)) can be adjusted to facilitate the operator work, and also seedling implanter When storing (1) in a garage etc., the 1st seedling mounting base 81L * 81R rotates to left-right direction, and is accommodated above the seedling supply part 7, and the seedling supply part 7 and a 1st seedling The mounting table 81L · 81R is configured to wrap up and down, so that the entire body can be arranged in a compact manner. Alternatively, the first seedling mounting table 81L (81R) may be separated for each seedling mounting frame 83L (83R) to accommodate the gas in a compact manner.

Moreover, the fall of the 1st seedling mounting base 81L (81R) rotated to the upper position of the seedling supply part 7 is regulated to the vertical part 83a of this seedling mounting frame 83L (83R) to predetermined height. When the 1st seedling mounting base 81L (81R) by the said restriction means is provided when the 1st seedling mounting base 81L (81R) is rotated to the position other than the upper position of the seedling supply part 7, It is configured to eliminate the descent regulation.

For example, the restricting means includes a stopper 89 attached to a seedling mount frame 83L (83R) that supports the first seedling mount table 81L (81R), and the seedling mount frame 83L ( 83R)), and the frame 69 (6R) on the side of the body main body, which is mounted so as to be horizontally rotatable and to be capable of lifting up and down.

The stopper 89 protrudes from the side of the vertical seedling mount frame 83L (83R) on the side of the first seedling mounting frame 81L (81R) on the side of the seedling mount frame 83L (83R), and the projection portion 89a provided above. The vertical lowering part 89b extended downward from the front-end | tip of the projection part 89a, and the lower end part of the said vertical lowering part 89b abuts on the upper surface of the frame 69 (6R) of a base body side, It is comprised so that the fall of the 1st seedling mounting base 81L (81R) may be regulated.

5 and 6, the support part 69e (6e) which supports the seedling base frame 83L (83R) to be able to rotate horizontally and to move up and down is the main body side. Is attached to the opposite side of the seedling supply unit 7 of the frame 69 (6R), and when the first seedling mounting base 81L (81R) is rotated to the upper position of the seedling supply unit 7, the seedling mounting frame ( The vertically lowered portion 89b of the stopper 89 disposed on the side of the first seedling mount 81L (81R) side of the vertical portion 83a of the 83L (83R) is the seedling mount frame 83L (83L). 83R)) is positioned above the frame 69 (6R) on the body main body side disposed on the seedling supply part 7 side with respect to the support part 69e (6e) of the seedling mount frame 83L (83R). When lowering, the lower end of the vertical lowering portion 89b of the stopper 89 and the upper surface of the frame 69 (6R) abut, and the lowering of the first seedling mount 81 (81R) is regulated. top And in the regulation position, wherein it is configured not to contact the first seedling mounting table (81 (81R)) is the seedling supply 7 seedling transfer port (48, 48 ...) of.

On the other hand, when the 1st seedling mounting base 81L (81R) is rotated except the upper position of the seedling supply part 7, the 1st seedling mounting base of the vertical part 83a of the seedling mounting frame 83L (83R). Below the vertically lowered portion 89b of the stopper 89 disposed on the side of the (81L (81R)) side, the seedling supply portion with respect to the support portion 69e (6e) of the seedling mounting frame 83L (83R). As a result of disappearing the frame 69 (6R) arrange | positioned at the (7) side, and the contact surface of the vertically lowering part 89b of the stopper 89 disappears, of the 1st seedling mounting base 81L (81R) The lowering regulation is eliminated, so that the height position of the first seedling mounting table 81L (81R) can be lowered to make it easier for an operator to work.

However, as for the 1st seedling mounting base 81L (81R) which rotated beyond the upper position of this seedling supply part 7, the range which can be lowered is determined, and the horizontal part 89a of the stopper 89 is the frame 69 ( 6R)) becomes the lowest position when caught by the edge portion of the attachment hole 69f (6f). Between this lowest position and the said regulated position, the seedling conveyance in which the lower end position of the horizontal part 83b of the seedling mounting frame 83L (83R) is hold | maintained by the base 41 with a port of the said seedling supply part 7. Although it may be located below the upper end position of the port 48 * 48 ..., when the 1st seedling mounting base 81R of a gas body direction is rotated horizontally between the said lowest position and the said regulation position, the stopper 89 The side part of the vertical part 89b of the abutment contact | abuts the outer side of the frame 6R, and it is regulated so that the said 1st seedling mounting base 81R may not rotate above the seedling supply part 7, and the said 1st seedling mounting While the base 81R does not contact the seedling conveying port 48 · 48... On the seedling supply unit 7, the first seedling mounting table 81R is configured to replace the second seedling mounting table 82 at the center of the body. It is comprised so that it may not contact also with the seedling mount frame 84R to support.

Further, when the restricting member extends forward and backward from the front end of the frame 69, and the first seedling mount 81L on the left side of the body is horizontally rotated between the lowest position and the regulating position, the stopper 89 The side part of the vertical part 89b of the contact part abuts against the outer surface of the regulating member before and after the front end of the frame 69, and the first seedling mounting base 81L is regulated so as not to rotate above the seedling supply part 7. The first seedling placing table 81L is configured not to contact the seedling conveying port 48 · 48 ... on the seedling supply unit 7, and the first seedling mounting table 81L is mounted on the second seedling loading table. You may comprise so that it may not contact with the seedling base frame 84L which supports the base 82.

Alternatively, when the first seedling mounting table 81L (81R) is rotated from side to side between the lowest position and the regulating position, the first seedling mounting table 81L (81R) is the second seedling mounting table 82. Seedling mount frame 83L (83R) for supporting the first seedling mounting frame 81L (81R) and the seedling mounting frame so that the seedling mount frame 84L (84R) does not touch A rotation restricting member is provided between the mounting holes 69f of the frame 69 (6R) into which the 83L (83R) is inserted (6f), thereby regulating the rotation range of the first seedling mount 81L (81R). It may be configured to do so.

The regulation structure further includes the horizontal portion 89a made up of a pin or the like, the support portion 69e (6e) made up of a pipe, and a cutout portion is provided on the upper portion of the pipe to form a portion other than the cutout portion. It can also be set as the structure which sets this located high part to the position which does not contact the seedling conveyance port 48 * 48 ....

As described above, in this embodiment, the frame 69 (6R) on the side of the main body, which is an existing member, is used as a part of the regulating means, so that the lowering of the first seedling mount 81L (81R) is regulated. Thus, the number of parts is reduced.

On the other hand, the structure of the stopper 89 protrudes on the side of the seedling mounting frame 83L (83R) of the vertical part 83a of the 1st seedling mounting base 81L (81R) side, and the protrusion part 89a provided. And seedling mount frame 83L (83R), as shown in FIG. 7, in addition to the configuration of an 'L' shape having a vertically descending portion 89b extending downward from the tip of the protruding portion 89a. Of the stopper 90 of the structure extended diagonally downward from the side part by the side of the 1st seedling mounting base 81L (81R) of the side), and the seedling mounting frame 83L (83R) as shown in FIG. The protruding part 91a which protruded in the side part of the 1st seedling mounting base 81L (81R) side of the site | part 83a, and the vertical lowering part extended downward from the longitudinal middle part of the said protruding part 91a ( The stopper 91 etc. of the "T" shape structure provided with 91b) may be applied, and the structure of a stopper is not specifically limited. By this stopper 90 占, the same effect as the above stopper 89 can be obtained. In the 'T'-shaped stopper 91, the tip of the protruding portion 91a is used as a handle. The protrusion part 91a is gripped, and the 1st seedling mounting base 81L (81R) can be raised and lowered and horizontally rotated, and operation improvement is aimed at.

Moreover, also about the arrangement position of the stopper 89 * 90 * 91, the limitation on the side part by the side of the 1st seedling mounting base 81L (81R) of the vertical part 83a of the seedling mounting frame 83L (83R) is limited. Not. For example, seedling frame frame which extends a support member from the support part 69e (6e) of frame 69 (6R) in the direction which does not interfere with other members, such as a front or a back, and corresponds to the said support member, A stopper is disposed on the side of the vertical portion 83a of 83L (83R). That is, this stopper is arrange | positioned so that the said support member may be located below the stopper when the 1st seedling mounting base 81L (81R) is rotated to the upper position of the seedling supply part 7, By the said support member, the fall of the 1st seedling mounting base 81L (81R) rotated to the upper position of the seedling supply part 7 is regulated, and the 1st seedling mounting base 81L (81R) is controlled by the seedling supply part 7 When it rotates to other than the upper position of (), it is comprised so that the fall regulation by the said stopper and the said support member may be removed.

With the above structure, when the 1st seedling mounting base 81L (81R) is rotated to the upper position of the seedling supply part 7, the lowering of the said 1st seedling mounting base 81L (81R) stops 89,. 90 or 91 and the like, and the first seedling mounting base 81L (81R) is regulated to a predetermined height by a regulating means such as an upper surface of the frame 69 (6R) and the like, and the seedling supply portion 7 below the same. When the first seedling mounting table 81L (81R) is rotated to a position other than the upper position of the seedling supply unit 7, the first seedling mounting table 81L (81R) is not touched. The lowering regulation of)) is eliminated, and the height position of the first seedling mounting table 81L (81R) can be adjusted to be easy for the operator to work with, thereby improving the operation.

Further, when the first seedling mounting table 81L (81R) rotated to the seedling supply unit 7 side is lowered and supported at a predetermined height by a restricting means, the first seedling mounting table 81L (81R) is incorrectly dropped. It does not make it, and the collision with the seedling supply part 7 below is prevented beforehand, and operation is improved.

In addition, conventionally, the first fixture seedling mount 81L (81R) rotated to the seedling supply part 7 side does not fall even in a bay so that a fixture may be tightened considerably firmly using a tool such as a spanner, and thus the first Although the seedling mounting frame 83L (83R) which supports the seedling mounting base 81L (81R) was fixed, the 1st seedling mounting base 81L (81R) rotated to the seedling supply part 7 side like this embodiment. If)) is kept at a predetermined height by a stopper (89, 90, or 91) or the upper surface of the frame (69 (6R)) or the like, the height of the stopper will not fall further. Can be. Therefore, the fastener 85 can be tightened by hand, such as a knob screw, and as a result, a dedicated tool such as a spanner is unnecessary to fix the position of the first seedling mounting table 81L (81R). Is improved.

Therefore, as shown in FIG. 2, the attachment part 83c of the 1st seedling mounting base 81L (81R) is attached to the front-end | tip part (front end) of the horizontal part 83b of the seedling mounting frame frame 83L (83R). Is formed. The attachment portion 83c includes a cylindrical body 83d disposed in the axial direction upward and downward, a shaft body 83e inserted into the cylindrical body 83d, and a disk body attached to an upper end of the shaft body 83e. 83f), the outer diameter of the disk body 83f is larger than the inner diameter of the cylindrical body 83d, and the shaft body 83e and the disk body 83f are rotatable on the upper end surface of the cylindrical body 83d. It is supported, and the attachment plate 81c of the 1st seedling mounting base 81L (81R) is fixed and provided on the said disk body 83f. Further, a fastener 86 made of a bolt and a nut is screwed into the cylindrical body 83d in the axial direction of the horizontal portion 83b of the seedling mount frame 83L (83R), and an inner end of the fastener 86 is provided. The outer peripheral surface of the shaft 83e is pressurized, and the rotation of the shaft 83e is regulated. When the fastener 86 is loosened, the shaft body 83e is free to rotate left and right with respect to the cylindrical body 83d, and the direction 81R of the seedling mounting base 81L can be adjusted so that an operator can work easily. have.

As shown in Fig. 1 and Fig. 3, support portions 6g · 6h are formed at the front and rear center portions of the left frame 6L and the front portion of the right frame 6R, respectively, and from each support portion 6g · 6h, When viewed from each side, the seedling mount frame 84L · 84R having an 'L' shape extends toward the front, and a second seedling mount 82 is installed on the seedling mount frame 84L · 84R. have. In the left and right seedling mounting frame (84L, 84R), the left seedling mounting frame (84L) is located slightly ahead of the right seedling mounting frame (84L) (84R), and both seedling mounting frame ( Both 84L and 84R are comprised so that expansion and contraction is possible in the front-back direction, and the 2nd seedling mounting base 82 is slidably attached back and forth on the said seedling mounting frame 84L * 84R.

As shown in FIG. 3, in the second seedling mounting table 82, a plurality of rod-shaped vertical frames 82b and 82b ... and horizontal frames 82c and 82c are disposed in the rectangular outer frame frame 82a in the vertical and horizontal directions. When viewed from the plane, it is shaped like a '田'. In these frames 82b, 82b, 82c and 82c, both ends in the longitudinal direction are respectively bent upwards, and the upper ends of the bent portions are fixed and provided on the lower surface of the outer frame 82a. A rectangular seedling loading tray is fitted in the outer frame frame 82a, and the seedling loading tray is supported by a plurality of frames 82b, 82b, 82c, 82c, and the seedling 46 above the seedling loading tray. 46…) are listed vertically and horizontally.

As shown in FIG. 2 and FIG. 4, the seedling base frame 84L (84R) is equipped with the vertical part 84a and the horizontal part 84b extended forward from the upper end of the said vertical part 84a. The lower portion of the vertical portion 84a is inserted into the attachment hole 6j (6k) of the support portion 6g, 6h of the frame 6L (6R), and interposes a fastener 87 made of a bolt and a nut. Is fastened. When the fasteners 87 · 87 of the support portions 6g, 6h of the left and right frames 6L, 6R are loosened together, the vertical portions 84a of the seedling-mount frame 84L (84R) become the frames 6L (6R). Up and down slide freely with respect to the mounting hole (6j (6k)) of the)), the second seedling mounting base 82 can be moved up and down in parallel while maintaining the horizontal posture, seedling mounting so that the operator is easy to work The height position of the large frame 84L, 84R can be adjusted, and when the seedling implanter 1 is stored in a garage or the like, the second seedling mounting table 82 is placed on the seedling mounting frame (84L, 84R). It is also possible to separate each and store the gas compactly.

In addition, a stopper may be formed in the vertical portions 84a and 84a of the seedling mounting frame 84L and 84R, and the seedling mounting frame 84L and 84R may be configured so as not to descend below a predetermined height. Specifically, grooves are formed in the upper and lower middle portions of at least one vertical portion 84a of the left and right seedling mount frames 84L and 84R, and the grooves are provided with holes 6g for the frame 6L (6R). (6h)), the seedling mount frame 84L · 84R becomes the lowest position when the edge portion of the seedling mount frame is caught, and the lower position of the horizontal portion 84b of the seedling mount frame 84L · 84R is positioned at the lowest position. It is comprised so that it may become higher than the upper end position of the seedling conveyance port 48 * 48 ... hold | maintained by the base 41 with a port of the said seedling supply part 7.

As mentioned above, the seedling mounting frame frame 83L, 83R of the 1st seedling mounting base 81L, 81R, and the seedling mounting frame frame 84L, 84R of the 2nd seedling mounting base 82 are free to slide up and down freely. It is a material, and height adjustment is possible, Usually, the 1st seedling mounting base 81L * 81R is arrange | positioned in the same height position or almost the same height position, and the 2nd seedling mounting base 82 is the said It is slightly higher than the first seedling mounting table 81L · 81R, and is disposed with a step up and down.

2, the support pipe 84c is fitted in the front part of the horizontal part 84b of the seedling base frame 84L (84R) so that it can slide back and forth. 3, the support pipe 84c of the left seedling mounting frame 84L is attached to the left and right center longitudinal frames 82b of the second seedling mounting frame 82, and the right seedling mounting is mounted. The support pipe 84c of the large frame 84L is attached to the rightmost longitudinal frame 82b. Thus, the 2nd seedling mounting base 82 is supported by the seedling mounting frame 84L * 84R at the left-right center part and the right end part, and is comprised so that it can slide back and forth. The left half of the 2nd seedling mounting base 82 protrudes to the left rather than the support pipe 84c of the left seedling mounting base frame 84L, and the said 2nd seedling mounting base 82 is the said seedling supply part 7 Over the drive sprocket 77 and the driven sprocket 79 of the above), arranged in the left and right width of the seedling supply unit 7, the area of the seedling loading tray to be mounted on the second seedling mounting table 82 is secured widely, Seedlings (46 · 46) can be mounted.

Fasteners 88 · 88 made of bolts and nuts are screwed from the lower end to the front end and the rear end of the support pipe 84c, respectively, and at least one of the fasteners 88 of the fasteners 88 · 88 is provided. The slide of the support pipe 84c is regulated by the edge part pressurizing the outer peripheral surface of the horizontal part 84b of the seedling base frame 84L. When this fastener 88/88 is loosened, the support pipe 84c which supports the 2nd seedling mounting base 82 becomes a back and forth slide free material with respect to the horizontal part 84b, and is mounted so that an operator can work easily. The table 82 can be shifted back and forth.

As mentioned above, the seedling part 8 is equipped with the 1st seedling mounting base 81L * 81R, and the 2nd seedling mounting base 82, and of the seedling mounting tray mounted on the seedling mounting base 81L * 81L * 82. The total area is secured widely, so that a sufficient amount of seedlings (46 · 46…) can be mounted, and there is almost no need to supply seedlings (46 · 46…) in the middle, thereby improving workability.

On the other hand, the fasteners 86 · 87 · 88 are not limited to fasteners made of bolts and nuts, and may be a fastener which can be fastened by hand such as a knob screw or the like, and the configuration is not particularly limited. In the case of applying a fastener such as a knob screw, the fastener can be tightened by hand, so that a dedicated tool such as a spanner is unnecessary, and the operation is improved.

Next, the structure of the said tank stand 95 is demonstrated.

Conventionally, seedling implanters include a tank stand for mounting a water tank on a base body, and a watering mechanism for watering and watering the water in the water tank into an irrigation pipe inserted into the transplant opening through a watering hose. The tank stand is equipped with one water tank.

However, when the paddy field is large, water in the water tank may disappear from the middle of the paddy field during seedling transplantation. In this case, it is necessary to move the seedling transplanter to a watering place every day to replenish the water tank. There is, the work efficiency is not very good.

Therefore, in view of this point, the tank stand 95 is configured as follows, with the task of ensuring the total area of the tank stand of the seedling implanter to be wider and improving workability.

As shown in FIG. 1 and FIG. 3, the tank stand 95 is arrange | positioned in front of the seedling supply part 7 above the rear wheel support pipe 21 which supports the rear wheel 17 of the left side, The said tank The first mounting table 95a of the base 95 is attached to the base frame via the brackets 110 and 111.

The bracket 110 is provided upright from the base frame above the rear wheel support pipe 21, and the bracket 111 is provided vertically from the frame supporting the seedling supply part 7, and the tank stand is attached to the bracket 110/111. (95) is attached and fixed.

As shown in FIG. 9, FIG. 10, and FIG. 11, the tank stand 95 rotates up and down to the horizontal 1st mounting table 95a fixed to the base body frame horizontally, and the said 1st mounting table 95a. The 2nd mounting stand 95b attached so that it is possible is comprised, and it is comprised so that the mounting area of the tank stand 95 may be enlarged by rotating the said 2nd mounting stand 95b in a horizontal state.

This 2nd mounting stand 95b is comprised so that it may rotate to the left-right outward direction with respect to the 1st mounting stand 95a.

The first mounting table 95a includes a mounting section 95c and guide sections 95d · 95d provided upright on both sides of the mounting section 95c in the width direction. Similarly, the second mounting table 95b includes a mounting section. 95f and guide parts 95g * 95g provided upright in the width direction both sides of the said mounting part 95f, and the left-right outer edge part of the guide part 95d * 95d of the said 1st mounting table 95a. The left and right inner ends of the guide portions 95g and 95g of the second mounting table 95b are rotatably attached thereto. With such a configuration, the second mounting table 95b is rotatably attached to the first mounting table 95a about the pivotal support shaft 95k.

In addition, a guide portion 95e is provided at an end opposite to the rotation support shaft 95k of the first mounting table 95a, and a guide portion is provided at an end opposite to the rotation support shaft 95k of the second mounting table 95b. 95h) is provided.

Moreover, the fall prevention member 96 is provided in the side part opposite to the rotation support shaft 95k of the 2nd mounting stand 95b, The said fall prevention member 96 supports the rotation of the said 2nd mounting stand 95b. Rotation is possible between the 'falling prevention position' fixed above the side opposite the shaft 95k and the 'retraction position' which opened above the side opposite to the pivot support shaft 95k of the second mounting table 95b. It is composed.

The fall prevention member 96 is a '門' type with a connection part 96c which connects the pair of standing parts 96a and 96b and the upper end of the pair of standing parts 96a and 96b. And a lower end portion of one of the standing portions 96a is horizontally attached to one side end portion in the width direction in the side portion opposite to the rotation support shaft 95k of the second mounting table 95b, and the second mounting portion is mounted. A stopper is provided at the other end part in the width direction in the side part opposite to the rotation support shaft 95k of the base 95b, and it is comprised so that the other standing part 96b may be detachably stopped.

In detail, the standing parts 96a and 96b are formed in the shape of a '^' with the vertical part and the inclined part, and the tip of the inclined part of the standing part 96a and the tip of the inclined part of the standing part 96b. This is connected by the connection part 96c. The inclined portion of one of the standing portions 96a is configured to be rotatable around the shaft center, and the connecting portion 96c of the fall preventing member 96 rotates up and down with respect to the inclined portion of the one of the standing portions 96a. Consists of.

Moreover, the said stop means is comprised by the cylinder 97, The cylinder 97 is provided with the stop hole which the axial center faces to an up-down direction, and the said connection part 96c is the inclination part of the one tongue part 96a. The lower end of the other standing part 96b is attached to and detached from the stopping hole of the cylinder 97 by rotating up and down with respect to.

With such a structure, the fall prevention member 96 has the "falling prevention position" fixed above the side part opposite the rotation support shaft 95k of the 2nd mounting stand 95b, and the 2nd mounting stand 95b. It is comprised so that rotation is possible between the "retraction positions" which open the upper side of the side opposite to the rotation support shaft 95k.

On the other hand, the fall prevention member 96 is not limited to the said structure, For example, it is a structure which rotates a fall prevention member up and down, and the side part on the opposite side to the rotation support shaft 95k of the 2nd mounting stand 95b. Or a “retraction position” to be retracted downward from the side opposite to the rotation support shaft 95k of the second mounting table 95b, and the like. Is not particularly limited.

The tank stand 95 is comprised as mentioned above, and the said water tank 93 * 93 contains water, and it is quite heavy, and when mounting the said water tank 93 on the 1st mounting stand 95a, the 2nd mounting By rotating the table 95b in a horizontal state, the water tank 93 can be easily mounted on the first mounting table 95a. When the water tank 93 is also mounted on the second mounting table 95b, the second mounting table 95b is left in a horizontal state as it is, and the water tank 93 is mounted on the second mounting table 95b. )). With such a simple structure, the mounting area of the tank stand 95 can be enlarged, and workability is improved.

Thus, the drop prevention member 96 guides the water tank 93 mounted on the second mounting table 95b to prevent the drop, thereby ensuring stability.

This fall prevention member 96 comprises the connection part 96c so that up-and-down rotation is possible with respect to the one standing part 96a, and the stop means which stops the other standing part 96b is comprised by a stop hole, The said connecting part The lower end portion of the other standing portion 96b is attached to or detached from the stop hole by pivoting 96c up and down with respect to the one standing portion 96a. It can be opened and closed.

With the above structure, even when the tank stand 95 and the fall prevention member 96 hold the water tank 93 with one hand, the tank stand 95 and the fall prevention member 96 can be simply rotated with the other hand, and the 2nd mounting stand 95b is carried out. The water tank 92 to be easily mounted on the first mounting table 95a or the second mounting table 95b by rotating the anti-falling member 96 to the "retracted position" by rotating it in a horizontal state. . After the water tank 93 is mounted on the second mounting table, the drop preventing member 96 is rotated and fixed to the original 'falling prevention position', and the second mounting table is fixed to the second mounting table. Guide the water tank (93) above (95b) to prevent falling.

Next, the structure of the said covering wheel 22 is demonstrated.

As shown in FIG. 1, the stay 172 · 172 protrudes downward from the lower surface of the front and rear middle parts of the rear left and right rear frames 5 · 5, and a clay wheel frame ( The front end of 173 is supported. The covering wheel frame 173 is U-shaped when viewed in plan, protrudes the handle 174 from the rear end to the rear, protrudes the support stay 175 upward from the left and right centers, The attachment frame 176 is provided vertically below.

1 and 12, the support shaft 190 protrudes in the front-rear direction at the bottom of the attachment frame 176, and is provided on the support shaft 190 at the lower portion of the covering wheel support frame 191. I support it. The earth wheel support frame 191 is formed in a 'E' shape when viewed from the rear, supports the support shaft 190 in the lower portion of the center frame, between the left and right sides of the frame and the lower part of the center frame The cover soil wheels 22, 22, 22, and 22 are arranged so as to be rotatable one by one. The pair of covering wheels 22 · 22… has a configuration that crosses the line in the traveling direction of the transplantation openings 49 · 49. Thus, the support shaft 190 is arranged at the lower left and right centers, and the left and right clay wheels 22, 22, ... are tilted to the left and right, and harvested on the slope of the upper surface of the ribs 45 to increase the accuracy of the soil cover. Both sides of the root part of the seedling 46 are pressed.

As shown in Figs. 12, 13 and 14, support brackets 208 and 208 are fixed and installed on the left and right lower ends of the clay wheel support frame 191, respectively, and the center of the clay wheel support frame 191 is provided. The support bracket 209 is fixed and installed in the lower end part. The support bracket 209 is about twice as long as the support bracket 208 and protrudes from the lower end of the center of the covering wheel support frame 191 to the left and right.

The scraper 213 is fixed and attached to the support bracket 208 (209) in correspondence with the covering wheels 22, respectively. A scraper 213 is attached to the front surface of the support bracket 208, and a scraper 213 · 213 is attached to the left side and the right side of the front surface of the support bracket 209. The lower part of this scraper 213 is bent forward and abuts on the outer circumferential rear end of the covering wheel 22, to remove deposits such as mud attached on the outer circumference of the covering wheel 22.

In addition, the support brackets 208 (209) are provided with support arms 211 for supporting the covering wheels 22, respectively. A support arm 211 is attached to the support bracket 208 on the front surface, and support arms 211 · 211 are attached to the left and right portions of the front surface on the support bracket 209.

The support arm 211 is formed in a 'c' shape when viewed in a plan view, and the cover earth wheel 22 is rotatably supported at the front end thereof, and the rear end surface of the support arm 211 is bolted and a nut. It is fastened and fixed to the front surface of the support bracket 208 (209) using the pair of fasteners 214 占 215 formed.

The attachment holes of the pair of fasteners 214 and 215 are formed at the rear ends of the support bracket 208 (left and right sides of the support bracket 209) and the support arm 211, and the support bracket 208 is provided. In the attachment hole of one fastener 215 formed on the left and right sides of the support bracket 209, it is composed of an elongated hole 208b (209b), and in detail, the attachment hole of the one fastener 215 described above. Silver is formed in circular arc shape centering on the attachment hole of the other fastener 214 of the support bracket 208 (left and right side part of the support bracket 209).

By moving this one fixture 215 along the long hole 208b (209b), the support arm 211 which supports the cover clay wheel 22 is supported by the support bracket 208 (left and right side parts of the support bracket 209). Can be attached at an angle. In such a configuration, the support arm 211 is rotatably attached to the support bracket 208 (left and right sides of the support bracket 209), and inclines the cover wheel 22 at a desired angle in the left and right directions. It is supposed to be.

Next, the structure of the ridge sensor roller 50 · 50 will be described.

As shown in FIG. 15, the rotation support shaft 51 is hypothesized between the lower ends of the left and right side frames of the engine frame 24, and the brackets 52 are respectively provided at the left and right ends of the rotation support shaft 51, respectively. 52, the upper end is rotatably attached. The horizontal part 53a of the support arm 53 used as the support body of the ridge sensor roller 50 is hold | maintained at the lower end part of this pair of brackets 52 * 52.

The support arm 53 is an 'L' shaped member in plan view, and has a horizontal portion 53a and an inclined portion 53b orthogonal to the horizontal portion 53a, and the horizontal portion 53a is The shaft center is disposed in the horizontal direction in the horizontal direction, and the inclined portion 53b extends from the left and right outer end portions of the horizontal portion 53a toward the inclined direction toward the k-side. The left end part and the right end part in the horizontal part 53a of this support arm 53 are rotatably attached to the lower end part of bracket 52 * 52, respectively. Then, the horizontal portion 53a and the rotary shaft 55 of the ridge sensor roller 50 · 50 are disposed in parallel before and after, and the left and right outer ends of the rotary shaft 55 are inclined portions 53b of the support arm 53. It is fixed and installed at the tip of). That is, the support arm 53 and the rotating shaft 55 are formed in a "c" shape in plan view, and two mockup sensor rollers 50 · 50 are attached to the left and right inner sides of the rotating shaft 55.

The number of the mockup sensor rollers 50 · 50 is not limited to two, and may be more than two. The plurality of mockup sensor rollers 50 · 50 are attached to the rotating shaft 55 supported by the support arm 53 as described above. By providing it, the unevenness | corrugation of the ribs 45 can be detected widely in a left-right direction.

This gyro sensor roller 50 * 50 is arrange | positioned so that rotation is possible by predetermined height, and detects the uppermost part of the gyro 45, and the distance between the gyro 45 and the lower surface of a base body does not become below a fixed distance. The seedling implanter 1 is comprised so that a base body can be raised and lowered by inclining the support part of the front wheel 12 * 12 and the rear wheel 17 * 17 with respect to a base body, This body lifting link mechanism is a front wheel 12 12) the front and rear wheel lifting link mechanism for rotating the pivoting support shaft of the rear wheel 17 · 17 in conjunction with the pivoting support shaft of the rear wheel 17 · 17, and the reciprocating crank mechanism for rotating the pivoting support shaft of the rear wheel 17 · 17 by driving a hydraulic cylinder. When the sensor roller 50 · 50 contacts the groove 45 and rotates, the hydraulic cylinder is operated to automatically raise the body, so that the distance between the groove 45 and the lower surface of the aircraft is fixed. It is configured to keep more than a distance.

Next, a second embodiment of the seedling transplanter according to the present invention will be described.

First, the whole structure of the seedling transplanter 101 is demonstrated.

In FIG. 16 and FIG. 17, the seedling implanter 101 arranges the engine 103 and the mission case 104 before and after the chassis frame 102, and is rearward from the upper right part of the mission case 104. The U-shaped handle frame 106 extends from the chassis frame 102 in a horizontal direction when viewed from the plane of the operation handle. In addition, the upper support frame 323 extends from the upper left of the mission case 104 to the inside of the handle frame 106. Further, the rear frame 105 占 105 extends from side to side toward the rear of the chassis frame 102.

And the base frame of the seedling implanter 101 is comprised by the chassis frame 102, the handle frame 106, the upper support frame 323, the rear part frame 105 * 105, the mission case 104, etc.

The seedling supply part 107 is arrange | positioned on the middle part of the said handle frame 106, The implantation part 20 is arrange | positioned under the seedling supply part 107, By the seedling supply part 107 and the transplantation part 20 A transplant working device 150A associated with the seedling transplant is configured. In addition, the rear part of the handle frame 106 is a driving operation unit 109.

Front wheel support arms 113 and 113 are rotatably provided on the left and right sides of the chassis frame 102, and front wheels 112 and 112 are supported by the front wheel support arms 113, respectively. Moreover, the chain case 116 * 116 is provided in the back part of the chassis frame 102 so that rotation is possible, and the rear wheel 117 * 117 is supported by each chain case 116. As shown in FIG.

On the other hand, below the mission case 104, driving drive shafts 115L and 115R are respectively provided on the left and right sides, and the rear wheels 117 and 117 rotate through the transmission of the drive from the driving drive shafts 115L and 115R. Driven. In addition, in the mission case 104 in which the transmission is stored, driving shift is performed (details later).

The front and rear front wheel support arms 113 and the chain case 116 are connected to the hydraulic cylinder 228 provided on the chassis frame 102 via a lifting link mechanism, and the front wheel support arm 113 and the chain case 116 are provided. ) Becomes an interlocking configuration. And the lifting mechanism of the chassis frame 102 is comprised.

As shown to FIG. 17, FIG. 18, the seedling supply part 107 is provided with the structure which continuously rotates the seedling conveyance port 148 connected in ellipse shape. The seedlings are inserted and held by the worker in the seedling conveyance port 148. Then, the seedlings are dropped from an appropriate position (portion overlapped with the implantation opening 151 in plan view) of the movement trajectory that becomes an ellipse shape of the seedling conveyance port 148, and the transplantation openings 151 of the transplantation unit 20 Seedlings) Here, the seedling conveyance port 148 is provided with the shutter 145 which can open and close the bottom face, The seedling is maintained at the time of closing of the shutter 145, The fall of a seedling at the time of opening of the shutter 145 is carried out. Is done.

Moreover, as shown in FIG. 17, the seedling mounting base 131 * 131 is arrange | positioned at the left and right of a base, respectively, and the seedling mounting base 132 is arrange | positioned also in the center. A seedling is mounted on such seedling mounting base 131 * 132, and this seedling is supplied to the seedling conveyance port 148 on the seedling supply part 107 manually by one or two workers.

Seedling holding mechanism in the seedling conveyance body 150 is demonstrated using FIG.

FIG. 19 is a side view showing the structure of the seedling carrier 150, the conveying direction is indicated by an arrow, and the figure seen from another direction is also displayed next to it.

The fitting ring 158 which is the main body of the base part 140 with a port is a cylinder, and the seedling conveyance port 148 is also a cylinder, and the seedling carrier 150 which combines these is a cylinder.

The seedling conveyance 150 is provided with the shutter 145 which can close the bottom part of the seedling conveyance 150 made into a cylinder, and prevents the seedling 126 inserted in the seedling conveyance 150 from falling off. Simultaneously, the seedling 126 is made to be able to fall in the seedling fall position.

As shown in FIG. 19, the lower surface of the seedling carrier 150 is a lower surface of the base base 140 with a pot, The shutter 145 which blocks the said lower surface is provided in the base base 140 with a port so that it can rock. . The support part which supports the shutter 145 so that rocking | movement is provided below the connection part (1st connection part 143a and 2nd connection part 143b * 143b) between the base part 140 * 140 with a port. In the figure, the steel wire or the spring plate as the spring body elastically biased toward the forcibly opened side is not shown in order to clarify the relationship between the fitting ring 158 and the shutter 145.

The base 140 with a port will be described with reference to FIG. 19.

The base 140 with a port includes a fitting ring 158 that allows the seedling conveying port 148 to be attached and detached, and a first connecting portion 143a and a second connecting portion 143b · formed on both sides of the fitting ring 158. 143b). The fitting ring 158 is a cylinder which opened up and down. In addition, the base 140 with a connecting chain port is connected endlessly as follows.

The first connecting portion 143a and the second connecting portions 143b and 143b extending in the horizontal plane protrude from the outer circumferential surface of the fitting ring 158. Moreover, 2nd connection part 143b * 143b becomes a positional relationship located above and below the 1st connection part 143a, respectively. Between adjoining bases 140 and 140 adjacent to each other, the first connecting portion 143a of the one-port base 140 and the second connecting portion 143b and 143b of the other port-based base 140 are planar. This is redundant when viewed from And the 1st connection part 143a and the 2nd connection part 143b * 143b are fastened so that left-right rotation can be mutually fastened by inserting the support pin 144 from upper direction, and it is connected between the base part 140 and 140 with a port.

As described above, the base 140 with the port is configured, and the base with the port 140 · 140 is connected in an endless manner so as to swing left and right, so that the group is not necessary, and the chain is not required. .

The structure of the seedling conveyance port 148 is demonstrated.

As shown to FIG. 18, FIG. 19, the seedling conveyance port 148 is comprised in the shape which spread | opened the upper side, and facilitates the insertion of the seedling 126 into the seedling conveyance port 148. FIG. Moreover, the inner surface of the seedling conveyance port 148 is formed in the uneven | corrugated shape, restricting the contact area of the inserted seedling 126 and the inner surface of the seedling conveyance port 148, and the water adhered to the seedling 126. Also in this case, the problem that the seedling 126 sticks to the seedling conveyance port 148 is prevented.

The detachable structure of the base part 140 with a pot, and the seedling conveyance port 148 is demonstrated.

The base 140 with a port is provided with the fall prevention structure of the seedling conveyance port 148, and can mutually fit.

As shown in FIG. 19, the protrusion 148a is provided on the outer peripheral surface of the seedling conveyance port 148, and the fitting hole 158a is located in the inner peripheral surface of the fitting ring 158 at the position corresponding to the protrusion 148a. ) Is formed.

Then, the projection 148a is fitted into the fitting hole 158a, and the base 140 with the port and the seedling conveyance port 148 are fitted with each other to be in the 'attached' state. In addition, the removal of the seedling conveyance port 148 from the base 140 with a port is prevented by the fitting of the said both members. In particular, since the seedling conveyance port 148 is made of synthetic resin as described above, the seedling conveyance port 148 can be bent to fit and detach the fitting hole 158a and the projection 148a. When the projection 148a to the fitting hole 158a is released, the base 140 with a port and the seedling conveyance port 148 will be in a "removing" state.

As shown in Fig. 20, the shutter 145 is a member formed by bending the plate member, and is formed on one side of the flat portion 145a (the soil gradually accumulates in this portion) and the flat portion 145a. The rotation support part 145b and the roller attachment part 145c formed in the other side are provided.

Above the roller attachment portion 145c formed on the other side, a steel wire B (piano wire) or a leaf spring (b) which is a biasing member that puts a shutter 145 (not shown) into the air hole forcibly. BT) (a somewhat narrower shape than the roller attachment part 145c) is provided so that it may press tightly from above.

The rotation support part 145b is a site | part formed by bending in the U shape when the said plate-shaped member looked at the cross section in front of the conveyance direction of the shutter 145. As shown in FIG. The support pin 146 inserted into the pivot support 145b is fixed in the horizontal direction to the shutter support 143c which is also provided to protrude from the bottom of the outer circumferential surface of the base 140 with the port, and the shutter 145 has the port base. It is possible to rotate up and down with respect to 140. In addition, the U-shaped portion makes it easy to assemble the pivoting support 145b easily and easily. As a deviating prevention, the press plate T is provided after assembly to the said U-shaped part, and after assembly is shown by (T). The shutter 145 is formed symmetrically. In addition, the attachment position of the roller attachment part 145c and the roller 147 is similarly symmetrical, and is provided only as many as the base attachment base 140 of a port.

And it is set as the structure which covers the lower surface of the said seedling conveyance port 148 by the flat part 145a. In addition, the support position (support pin 146 and rotation support part 145b) of the shutter 145 is provided in the front of a conveyance direction in the shutter 145. As shown in FIG.

The roller attachment part 145c is a site | part which bend | folded the said plate-shaped member perpendicularly downward with respect to the flat part 145a so that a plate surface may be parallel to a advancing direction in the conveyance direction back of the shutter 145. As shown in FIG. A roller 147 is disposed on the roller attachment portion 145c, and the roller 147 supports the support pin 149 in a horizontal direction perpendicular to the traveling direction, and is rotatably supported with respect to the shutter 145.

The roller 147 provided in the shutter 145 rolls on the guide rail 139.

Fig. 21 is a partial plan view of the seedling supply portion, and as shown in this figure, the roller 147 is attached to each base 140 with a port, but the rollers (left and right alternately with respect to the conveying direction (arrow A in Fig. 21) are shown. 147 is disposed. That is, in one seedling supply unit 107, the bases with a plurality of connected ports (140, 140,...) Are even numbers, and when the numbers are sequentially numbered, the bases with the ports (140) located in an odd number are placed in an even number. In the base 140 with the port located, rollers 147 占 147 are arranged on the left and right opposite sides alternately with respect to the conveying direction. In other words, the odd (or even) rollers 147 are disposed on the inner circumferential side, and the even (or odd) rollers 147 are disposed on the outer circumferential side.

In addition, in the path where the roller 147 rolls on the guide rail 139 as shown in FIG. 22, the openings (or cutouts) 139R and 139L are positioned at the front of the guide rail 139 above the gas. It is arranged displaced. As shown in Fig. 21, a steel wire (piano wire) having a shape that faces the openings 139R and 139L extends toward the slopes 336L and 336R, and a part thereof is formed to face downward. The end portion is in contact with the flat portion 145a at the rear of the conveyance rotation direction when the shutter 145 is opened in the vertical direction downward so that the steel wire B (piano) stops at a position where it cannot be returned to the rear. Line) or leaf spring BT, the attachment base BM is displaced, and the attachment base BM is left-closed from the guide rail 139 by a fastening member (bolt, etc.) N so that it can be adjusted in up, down, left and right directions. It is attached toward the guide part 340 and the right opening / closing guide part 341 side.

As described above, in the present embodiment, two sets are implanted, but the number of rollers 147 of the shutters 145 is increased, and the guide rails (paths of the guide rails 139 through which the rollers 147 pass) By counteracting the corresponding portion 139 to set the open position of the shutter 145, the number of the shutter 145 and the transplantation opening 151 can be increased, and the number of transplanting assistants can be increased. have. In addition, with this, the steel wire B and leaf spring BT which are elastic bias means which forcibly press the shutter 145 downward on the seedling supply side are also provided simultaneously, and the effect | action also does the same.

23, the steel wire B (piano wire) or steel wire B which is an elastic bias means in the opening direction of the shutter 145 and the said shutter 145, demonstrating the operating state of the seedling carrier 150. FIG. The action of the wider leaf spring BT is described.

The fitting ring 158 which is the main body of the base part 140 with a port is a cylinder, and the seedling conveyance port 148 also consists of a cylinder, and the seedling conveyance body 150 comprised by this is also a cylinder. Although the seedling 126 is shown in the seedling conveyance port 148, the seedling falls to the transplant part 120 from the seedling conveyance port 148 shown in an actual working state. The seedling conveyance port 148 which inserted this fallen seedling 126 is conveyed in the arrow H direction. The shutter 145 at this time is referred to as a shutter 145A. When the roller 147 moves along the slope (336L) 336R, it becomes the shutter 145B of a next state, closes the bottom part of the seedling conveyance port 148, and waits for insertion of the next seedling 126. FIG. This is also indicated by the shutter 145D when moved to the right side of the drawing.

Next, the seedling 126 is inserted, and the state just before it becomes the overlapped position in plan view with the transplantation opening 151 of the corresponding transplant part 120 is also shown with the code | symbol 145D. When it reaches the opening 139L (139R) of the guide rail 139, the flat part of the roller attachment part 145c of the shutter 145 is biased diagonally downward by the steel wire (piano wire) B, and then the shutter ( It is opened with the support pin 146 as the support point by the weight of 145. At that time, the seedling 126 falls because the timing of the implantation opening 151 of the implantation unit 120 coincides with the timing.

At this time, the shutter 145 is inertial due to its own weight and performs a pendulum motion, so that the tip of the steel wire B (the leaf spring BT) is shutter 145 so that the posture in which the seedling is falling is not disturbed. A flat portion 145a of the () and restrains the original return. The shutter at that time is indicated by reference numeral 145E. Since the transplantation openings 151 and the shutters 145 each have two sets of timings at the same time, the two sets of seedlings 126 are supplied at the same time.

At this time, the said steel wire B and the leaf | plate spring BT are shift | deviated back and forth, respectively, and are provided by shifting inward direction, respectively, when the site | part which acts is planarly viewed.

That is, in the openings 139R and 139L, there is no support for the roller 147. When the shutter 145 rotates downward around the support pin 146, the lower portion of the base 140 with a port is opened. The seedlings 126 fall to the implanted portion 20.

As shown in FIG. 18, the opening part 139R * 139L is a seedling fall position in the seedling supply part 107, respectively, and the said seedling fall position overlaps when the transplantation opening machine 151 * 151 is respectively seen in plan view. It is arranged to be.

The plurality of seedling carriers 150 includes a seedling carrier 150 group (hereinafter, referred to as a seedling carrier 150 for transplantation of left seats) that allows the seedling 126 to fall from the opening 139L on the left side, and the opening of the right side. It consists of two groups of the seedling carrier 150 group (henceforth, the seedling carrier 150 for ear transplants) which makes the seedling 126 fall from (139R).

And the set of the seedling conveyance body 150 which arrange | positioned the roller 147 on the outer side of the circulation path which the seedling conveyance body 150 moves is a group of seedling conveyance bodies 150 for left transplantation, and a roller inside the said circulation path | route The set of seedling carriers 150 which arrange | positioned (147) is a seedling carrier 150 group for right ear transplants. As described above, each seedling carrier (for left transplantation and right transplantation) 150 drops because the shutter 145 opens downward at the same time as the seedling 126 is transferred to the transplant opening 151. There is no disturbance of posture, and it is expected to improve the accuracy of transplant work.

Here, the configuration of the guide rail 139 will be described in detail. (In this case, it is example of two sets of transplants)

The guide rail 139 is formed along the circulation path which the base 140 with a port (similar carrier 150) moves.

As shown in FIG. 22, the guide rail 139 is formed in elliptical shape so that it may overlap with the circulation path of the base 140 with a port in planar view.

Parallel to the circulation path, the roller 147 rolling path in the guide rail 139 is formed in two rows (four rows in the case of four sets implantation), the left opening and closing guide 340 and the right opening and closing guide (341). The left open / close guide part 340 located outside the circulation path guides the roller 147 of the seedling carrier 150 for the left transplant, and opens and closes the shutter 145 of the seedling carrier 150. will be. In addition, the right opening / closing guide part 341 located inside the circulation path guides the roller 147 of the seedling carrier 150 for the right ear transplant to guide the shutter 145 of the seedling carrier 150. Open and close.

The left opening 139L overlaps with the left open / close guide part 340 in plan view, and the overlap part is the open guide part 340a of the roller 147 in the left open / close guide part 340. . In the opening guide part 340a, the roller 147 provided in the seedling carrier 150 for left transplantation falls downward by the action of the steel wire B or the leaf spring BT which are elastic bias means, and the shutter 145 is carried out. ) Is opened, and the seedling 126 falls from the seedling carrier 150.

In addition, in the left open / close guide part 340, the site | part except the open guide part 340a is the closed guide part 340b of the roller 147. As shown in FIG. In the closed guide part 340b, the roller 147 of the seedling carrier 150 for a left transplant is comprised so that it cannot fall, and the shutter 145 is maintained in the closed state, Seedling conveyance is performed.

That is, the left opening / closing guide part 340 is the closing guide part 340b which is the surface by which the roller 147 of the seedling carrier 150 for left transplantation rotates, and the opening guide part 340a which the said roller 147 falls. )

Similarly, the right opening / closing guide part 341 also has the closed guide part 341b which is the surface which the roller 147 of the seedling carrier 150 for a right ear transplantation rotates, and the open guide part 341 which the said roller 147 falls. is a.

Summarize the above. Openings 139R and 139L are opened along the circulation path in the elliptical guide rail 139 that is long in the horizontal direction. The openings 139R and 139L are larger than the bottom area of the base 140 with a port, so that any one of the opening guides 340a and 341a for opening the shutter 145 to drop the seedling 126 can be dropped. Is formed. Specifically, in the conveying direction, one side is left and right one side and the other side is left and right side respectively so that the roller 147 is separated so that the opening is large in the side, and the side where the roller 147 is not located is the base with port. The seedlings 126 fall to the extent that they are slightly wider than the bottom of the 140 (the shutter 145 can rotate downward), but the roller 147 laid on the base 140 with the port adjacent to the front and rear in the advancing direction. Is not to fall. That is, the opening portions 139R and 139L are widened to the left and right opposite sides with respect to the conveyance direction centerline of the base 140 with a port and are opened.

In addition, the opening portions 139R and 139L are opened at positions 3 or 5 pitches away from the base 140 with the port connected in the conveying direction (circulation path), and the intervals are matched to the jaw width (trough spacing). Lost

At the position where the roller 147 on the end side in the traveling direction passes in the openings 139L and 139R, slopes 336L and 336R which rise gradually and are connected to the roller surface 147 of the guide rail 139 are connected. , Respectively. The inclination direction of the slopes 336L and 336R is the front and rear bottom relative to the conveying direction, and the shutter 145 is gradually closed with movement without the roller 147 being caught.

The opening and closing of the shutter 145 is elastically biased by the steel wire (piano wire) B or the leaf spring BT biasing the planar portion of the roller 147 to be forcibly opened, and below the roller 147. Is performed by the presence or absence of the guide rail 139 (the presence or absence of the open guide portions 340a and 341a) to which the roller 147 abuts. Further, in the open state, the shutter 145 performs pendulum movement by inertial force in a portion without the guide rail 139 by the weight of the shutter 145 itself, but the steel wire (piano wire) B or leaf spring The tip of the BT abuts against the flat portion 145a of the shutter 145 to prevent the original return. When the shutter 145 has an original return, the shaking shutter 145 interferes with the seedling 126 during the fall, and the dropping attitude of the seedling is disturbed, but the steel wire B or the leaf spring BT is flat. Since contact with the part 145a is prevented and the return is prevented, when the seedling 126 is handed over to the implantation opening 151, it is supplied in the state without the disorder of a posture. In particular, in the shutter 145, when the opening is closed, the roller 147 is guided to the slope 336L (or the slope 336R). Since the opening and closing configuration of the shutter 145 is as described above, the shutter 145 is slope 336L (or slope 336R) by moving the support position of the shutter 145 to the front in the conveying direction as described above. At the time of contact with, it is always made to rotate in the closing direction.

Thus, the seedling carrier 150 is arrange | positioned in the oval shape in the seedling supply part 107, and each seedling carrier 150 passes in order the front where the main worker and the auxiliary worker of the back of a gas are located in order, Upon passing, seedlings 126 are inserted into seedling conveyance ports 148. When the seedling carrier 150 moves along the elliptic circulation path and moves to the site where the implantation part 20 in front of the path is located, the rollers 147 占 147 separated by three pitches simultaneously move the steel wire B or the leaf spring. It acts to open downward forcibly by the action of BT, falls into the openings 139R and 139L which are some falling positions, and the shutter 145 占 145 rotates downward to open. And the seedling 126 hold | maintained by the seedling conveyance body 150 falls, and is thrown in into the transplantation opening machine 151 * 151 of the transplantation part 20.

When the seedling carrier 150 passes the seedling dropping position, the rollers 147 占 147 abut the slopes 336L 占 336R, gradually rising, and the shutters 145 占 145 are closed. Thus, opening and closing of the shutter 145 has a simple configuration.

Therefore, every other seedling is supplied from the seedling conveyance body 150 with respect to one transplantation opening machine 151. That is, the odd base 140 with the port is left (or right) of the left and right openings, the even base 140 with an even port is the right (or left) opening of the lower shutter 145, and the odd number is And even fall to the transplantation openings 151 and 151 of the right and left pairs (one set and two sets or three sets and four sets). Therefore, by this repetition, two sets of transplantation can be performed at the same time, and the space between the left and right tanks can be kept constant.

Next, a pair of implantation openings 151 · 151 and the lifting mechanism thereof provided in the transplantation unit 20 will be described.

As shown in FIG. 16, FIG. 17, as long as it is arrange | positioned to the said implantation part 20 located in the back of the mission case 104, and is conveyed from the seedling supply part 107 to the ridges 125 in the right and left inside a base body. A pair of transplant openings 151 and 151 and a lifting mechanism of the transplant openings and openings 151 and 151 are provided.

A rotary case is disposed on one side of each of the left and right transplant openings 151, and the lifting guide 153 for guiding the lifting and closing of the transplant openings 151 on the left and right sides of the transplant openings 151, Arms, links, etc. which connect these are provided. The rotary case and the elevating guide 153 占 153 are fixed to the rear frame 105, and the implantation openings 151 占 151 are disposed therein, and the implantation apertures 151 占 151 are the seedling supply unit 107. It is configured to ascend and descend the trajectory on the ellipse when viewed from the side from below.

In the rear of the mission case 104, the implantation unit 20 is disposed below the seedling supply unit 107. The transplantation unit 20 is provided with a pair of left and right transplant openings 151 and 151 that open and close and move up and down. The transplantation opening machine 151 is configured to hold seedlings in a closed state and to drop seedlings in an open state.

Each transplant opening 151 receives the seedling 126 from the seedling supply part 107 in the top dead center side (highest rising side) of its own movement path | route. In more detail, the seedling 126 falling from the seedling conveyance port 148 of the said suitable position is thrown in from the upper part to the transplantation opening machine 151.

In addition, each of the transplant openings 151 rushes into the ridges 125 at the bottom dead center side (lowest drop end side) of the movement path thereof, and becomes open, thereby forming a transplantation hole of the seedlings 126 in the ridges 125. In addition, seedlings 126 may be dropped into the implantation hole.

Then, soil is collected and covered in the root portion of the seedlings 126 by the covering soils 122 · 122, which are arranged behind the transplant openings 151 · 151, and the transplantation work of one seedling 126 is completed. do.

The arrangement structure of the various levers provided on the back of the handle frame 106 which is an operation handle will be described. The rear part of the handle frame 106 serves as a driver's driving operation unit 109 accompanying the running of the seedling implanter 101, and various levers for operating the seedling implanter 101 are provided here.

As shown in FIG. 17, FIG. 24, and FIG. 26, when viewed in plan, the some lever is arrange | positioned in the space enclosed by the handle frame 106 and the seedling supply part 107. FIG. In the space, the upper and lower levers 349 are provided in the structure supported by the right side of the handle frame 106 at the right side. Similarly, in the left side, the main clutch lever 350 is provided in the structure supported by the left back part of the handle frame 106. FIG. Moreover, the main shift lever 342 and the hydraulic lock lever 371 are arrange | positioned like FIG. 25A, FIG. 29 in the center part in the said space, and are provided with the structure supported by the base frame 376 of the seedling supply part 107. As shown in FIG. The base frame 376 is supported by the handle frame 106 and the upper support frame 323.

The main clutch lever 350 is an operation means for disconnecting and connecting the engine power from the traveling drive mechanism (the drive mechanism of the rear wheels 117 · 117) and the work drive mechanism (the drive mechanism of the transfer work apparatus 150A). The gas up / down lever 349 is an operation means of the said hydraulic cylinder 228, and is a structure which also serves as the clutch lever of 150A of transplantation working apparatuses. In addition, the main shift lever 342 is an operation means for main shift switching (described later).

As shown to FIG. 17, FIG. 24, the main clutch lever 350 is comprised by T shape in planar view. And the handle 350a is provided in the edge part of the horizontal axis which forms a T-shape, respectively, and the operator of the main clutch lever 350 can be operated by the worker located in either of the right and left of a gas (gutter | gull below a gas). (At this time, it is also possible to make the T-shaped side bar the same length as the left and right.)

The mechanism for transmitting the driving force from the mission case 104 to the implantation work device 150A will be described.

As shown in FIG. 26, the upper part of the back of the mission case 104 is provided with the work part drive shaft 114L * 114R extended from the inside of the said mission case 104 to left and right, respectively.

On the work part drive shaft 114L extending to the left side (advance direction), the sprockets 127 占 127 for raising and lowering the pair of left and right transplanted openings 151 占 151 provided in the implantation part 20 are fixed. It is installed. And power is transmitted from each of the sprockets 127 占 127 using a chain, and a pair of implantation openings 151 占 151 provided in the transplantation part 20 are driven.

On the other hand, the sprocket 313 for driving the seedling supply part 107 is fixed and provided in the work part drive shaft 114R extended in the right direction. Power is transmitted from the sprocket 313 using the chain 375 (FIG. 28), and the seedling supply unit 107 is driven. And the seedling conveyance port 148 group with which the seedling supply part 107 is equipped moves along an oval connection trace, and conveys the seedling 126 to the seedling delivery position to the transplant opening-opening machine 151.

Next, the shift switching means in the seedling implanter 101 will be described.

In the seedling implanter 101 according to the present embodiment, the main shift switching and the sub shift switching are performed by the transmission incorporated in the mission case 104.

As shown to FIG. 25A, FIG. 25B, FIG. 26, and FIG. 27, the main fork rod 440 extends toward the left side from the mission case 104. As shown to FIG. By inserting and removing the main fork rod 440 with respect to the mission case 104, the gear of the gear in the mission case 104 is replaced and main shift switching is performed.

In the main shift switching of the seedling implanter 101, it is possible to switch between "run" (moving travel), "reverse", "neutral", and "transplant" (work driving). 'Riding' (moving driving) is the shift to forward movement during non-working, and 'reverse' is the shift to backward when non-working. In addition, "transplantation" (working run) is a shift to forward movement at the time of seedling transplant work, and "neutral" is a shift to travel stop.

As shown in FIG. 26, the secondary fork rod 441 extends toward the right side of the mission case 104. By inserting and removing the secondary fork rod 441 with respect to the mission case 104, gears of the gears in the mission case 104 are switched to perform sub-shift switching.

In the sub-shift switching of the seedling implanter 101 according to the present embodiment, the two-stage (single-speed) switching is enabled. The two-stage shift switching in the sub shift is shifting the shift of the one-man operation (low) and the two-man operation (high).

Here, in the drive transmission configuration in the present embodiment, the engine output is first subjected to the sub-shift switching, then the main-shift switching, and the power received both the shifting is output as the work output and the traveling output. At the time of transplant work, at the time of one person work, the sub shift is set to "low" (one person work) and the main shift is set to "transplantation". In the case of two-person work, the shift is set to 'high' (two-person work) and the main shift is set to 'transplantation'. On the other hand, at the time of a traveling run, the shift is changed to "high" (two person work), regardless of the number of workers, and the "shift" of the main shift is selected to travel.

As shown in FIG. 26, FIG. 28, the handle 441a is provided in the protruding side front end of the said sub fork rod 441, and the sub fork rod 441 itself is comprised as a sub transmission lever.

The operator moves to the right side of the front part of the seedling implanter 101, and inserts and removes the sub transmission lever (sub fork rod 441) which protrudes from the right side surface of the mission case 104, and switching of sub transmission is possible. (At this time, the operation of the shifting lever passes through a groove between the neighbors and the seedling mount 131 · 131 is rotated to the upper part of the ridge, so that the ridge in relation to the rear wheel Since problems such as stepping on (125) occur, it is desirable to be able to link with a rod, wire, or the like so as to directly operate from the driving operation unit 109.

The arrangement of the main shift lever 342 will be described.

As shown to FIG. 16, FIG. 17, FIG. 24, FIG. 25, FIG. 28, and FIG. 29, the main shift lever 342 which is a switching operation means of the main shift by an operator is arrange | positioned behind the seedling supply part 107. It is. The main shift lever 342 is connected to the main fork rod 440 through a link below the seedling supply unit 107.

As shown in FIG. 22, the arrangement position of the main shift lever 342 is a center part in the space enclosed by the handle frame 106 and the seedling supply part 107 in plan view, and becomes a position which can be operated from both left and right sides. have.

The configuration of the link will be described.

26, 28, 29, and 30, the link rod 443, which is an elongated member, moves from the left side of the mission case 104 toward the rear of the seedling supply unit 107 in the front-rear direction. It is arranged almost horizontally. The link rod 443 is supported on the left side of the mission case 104 and the rear end of the base frame 376 of the seedling supply unit 107 so as to be slid back and forth, and rotatably using the receiving member.

The arrangement position of the link rod 443 is a lower side of the seedling supply part 107 (the seedling conveyance port 148 row) in an up-and-down position. In addition, in the left-right direction, the left side of the mission case 104 and the center of the handle frame 106 are provided between the left and right transplantation openings 151 占 1.

As shown in FIG. 26, FIG. 27, and FIG. 28, the U-shaped rod base 444 is fixed and provided in the planar view at the left side surface of the mission case 104. As shown in FIG. The rod receiver 444 is the receiving member at the front of the link rod 443. The rod support 444 is formed by bending a plate, and has three plate-shaped portions, and a pair of support portions 444a and 444b, which are plate-shaped portions at both ends, are disposed in front and rear, and an attachment portion which is a central plate-shaped portion. 444c is fixed and provided on the side surface of the mission case 104 by fastening means such as a bolt.

Insertion holes for inserting the link rod 443 are formed in the support portions 444a and 444b positioned forward and backward, respectively, and the link rod 443 is rotatably supported by the rod receiver 444. It is.

In the front part of the link rod 443, the link arm 445 which connects the said link rod 443 and the main fork rod 440 is fixed and provided. The link arm 445 is located at the rear of the load receiver 444.

As shown in FIG. 26, FIG. 27, and FIG. 30, the locking pin 446 extended rearward is fixed and provided in the front-end | tip of the main fork rod 440, The locking arm 445 has the locking pin ( A locking hole 445a through which 446 is inserted is formed. The locking hole 445a is composed of a long hole along the extending direction of the link arm 445. The locking pin 446 is allowed to move up and down in the long hole with respect to the left and right rotation of the link arm 445. 440 is inserted into and removed from the mission case 104 (left and right movements).

28 and 29, on the rear end of the base frame 376, an inverted L-shaped support plate 347 is fixed and provided from the side. The support plate 347 is the receiving member at the rear of the link rod 443. The support plate 347 is formed by bending a flat plate member, and includes a support portion 347a extending in the vertical direction and a display portion 347b extending rearward from an upper end of the support portion 347a.

The pillow block 348 is fixed to the lower part of the support plate 347, and the said link rod 343 is provided in the pillow block 348 so that rotation is possible. The link rod 443 is supported by the front frame receiving member 444 and the rear pillow block 348 to be rotatably supported by the gas frame.

As shown in FIGS. 25A and 25B, the main shift lever 342 is fixed and provided at the rear end of the link rod 443. The main shift lever 342 is provided to extend upward from the rear end of the link rod 443, and the handle 342a of the main shift lever 342 is located above the handle frame 106.

Then, the operator grasps the main shift lever 342 and rotates it left and right, thereby inserting and removing the main fork rod 440 with respect to the mission case 104 through a link made of a link rod 443 or the like, and performing a main shift switching operation. Is done. The switching positions of the main shift lever 342 by left and right rotation are 'run' (moving travel), 'neutral', 'transfer' (work running), 'neutral', and 'reverse' in order from the left. .

Moreover, the upper surface of the part extended rearward from the upper end of the support plate 347 is used as the display part 347b, and functions as a nameplate for shift switching, and respond | corresponds to the said main shift switching position, it is "run" (moving travel) ), Etc. are recorded. Thus, the operator can see the display (character) on the display portion 347b as the speed change name plate, and can grasp the switching position.

Here, the seedling transplanter 101 is provided with the transplantation opening machine 151 * 151 which raises and falls up and down, and the seedling supply part 107 which supplies a seedling to the transplantation opening machine 151 * 151, While arranging the mission case 104 in front of the supply part 107, the operation handle (handle frame 106) extended to the back of the some supply part 107 is provided.

Therefore, in the seedling implanter of the above structure, the shift lever (main shift lever 342) is arrange | positioned inside the operation handle of the back of the seedling supply part 107.

Therefore, compared with the case where the shift lever (main shift lever 342) is provided on the side of the mission case 104, the length of the lever itself is shortened and the rigidity is improved, and shifting of the shift by operation of the shift lever is assured. . In addition, by providing the shift lever at the rear of the seedling supply unit 107, the shifting name plate (display section 347b) can also be provided at the rear of the seedling supply unit 107, so that the operator can easily grasp the switching position. Therefore, the operability of the shift lever can be improved.

In the seedling implanter 101 of the present embodiment, in the mission case 104, the main shift switching and the sub shift shifting are enabled, and operation means for performing both shifts is provided. The operation means is a main shift lever 342 and a sub shift lever (sub fork rod 441).

As described above, the main shift lever 342 is disposed behind the seedling supply unit 107, and the shift lever is positioned at the rear of the seedling supply unit 107 using the link below the mission case 104. It is supposed to be connected to the fork rod (main fork rod 440) which performs shift switching within.

Here, the subsidiary shift lever is also disposed behind the seedling supply unit 107, and the shift lever is shifted in the mission case 104 by using the link below the seedling supply unit 107. It is good also as a structure connected to the fork rod (sub fork rod 441).

As described above, by providing the subsidiary shift lever at the rear of the seedling supply unit 107 using the link, similarly to the main shift lever 342, the operator needs to move to the side of the mission case 104 for the operation of the subshift lever. The improvement of the operation is realized.

In addition, the same effects as the main shift lever 342, that is, the shift switching by the operation of the shift lever can be ensured, and the shift name plate can be provided in a position that is easy for the operator to see, thereby improving the operation. . It is also possible to provide an H type lever guide in the display portion 347b so that the main shift and the sub shift can be operated by one lever.

Next, the shift switching mechanism related to the weekly adjustment will be described.

Daytime adjustment is performed by shifting the work drive speed (drive speed of the transplantation work apparatus 150A) with respect to a travel drive speed.

As shown in FIG. 31, the seedling implanter 101 is provided with the belt type continuously variable transmission apparatus 352 as this transmission means.

As shown in FIG. 26, the belt-type continuously variable transmission device 352 includes a continuously variable speed pulley 353 composed of a pair of divided pulleys 353a and 353a and an output pulley 354, and both pulleys 353. 354 is wound by a belt 355.

In the continuously variable speed pulley 353, an external split pulley 353a is fixed and installed on the weekly shift input shaft 356 protruding to the outside of the mission case 104, and the inner split pulley 353a is a weekly shift input shaft ( 356 is slidable in the axial direction, biased to the outer split pulley 353a by a spring 384 provided on the weekly shift input shaft 356, and the main shift and minor on the weekly shift input shaft 356. Engine power after transmission is transmitted.

In addition, the output pulley 354 is similarly fixed to and installed on the weekly shifting output shaft 357 projecting to the outside of the mission case 104, and the belt type continuously variable transmission device 352 is provided on the weekly shifting output shaft 357. Power after the shift in is transmitted. The said weekly speed change output shaft 357 is connected to the said work part drive shaft 114L * 114R using the gear etc. in the mission case 104. As shown in FIG.

The belt-type continuously variable transmission apparatus 352 is provided with the tension roller 358 which abuts from the inside to the belt 355 as a shift switching means. However, the tension roller 358 may be configured to bias from the outside to the inside.

The continuously variable speed pulley 353 has a pair of split pulleys 353a and 353a formed in a tapered shape on the inside thereof, and means for biasing both split pulleys 353a and 353a to approach each other (spring 384). ) Is provided.

The diameter of the contact position between the continuously variable pulley 353 and the belt 355 may be changed by changing the position of the tension roller 358. As the tension roller 358 is moved to the outside of the belt 355, the spacing of the divided pulleys 353a and 353a becomes wider, and the diameter of the stepless pulley 353 and the belt 355 in contact with each other becomes smaller. On the contrary, as the tension roller 358 is moved to the inside of the belt 355, the inner divided pulley 353a is pressed by the spring 384 to contact the continuously variable pulley 353 and the belt 355. Will grow.

In this way, by changing the diameter of the belt 355 in contact with the continuously variable speed pulley 353, it is possible to shift the rotational speed of the shaft steplessly between the weekly shifting input shaft 356 and the weekly shifting output shaft 357. .

The moving mechanism for causing the position change of the tension roller 358 will be described.

As shown in FIG. 31, as this movement mechanism, the 1st link which connects the daytime adjustment handle 359, the daytime adjustment handle 359, and the tension roller 358 is provided. On the other hand, the daytime adjustment handle 359 is an operation means for daytime adjustment by an operator.

The first link is constituted by a tension arm 360 provided on the right side of the mission case 104 so as to be rotatable. The tension arm 360 is formed in a V shape, and is connected to the mission case 104 by a connection portion (middle portion) having two V-shapes, one end of which is connected to the weekly adjustment handle 359, and the other end of the tension roller ( 358) is provided so that rotation is possible. However, the tension arm 360 may be a straight arm that supports the one end and is connected to the daytime adjustment handle 359 at the middle portion.

The weekly adjustment handle 359 is formed in a substantially inverted L shape, and a threaded portion 359b is formed at the tip of the longitudinal axis 359a that forms the L-shape, and the threaded portion 359b is formed by the tension arm ( It consists of screwing the screw support (360a) supported on one end of the 360. Moreover, in the weekly adjustment handle 359, the handle 359d is rotatably provided at the front-end | tip of the horizontal axis 359c which forms L-shape. Then, by rotating the handle 359d around the vertical axis 359a, the vertical axis 359a rotates coaxially, and the tension arm 360 that provides the screw receiver 360a rotates up and down.

On the other hand, the weekly adjustment handle 359 is provided in the mission case 104 as follows so that the positional change of the handle 359d will not depend on the rotation of the handle 359d. The vertical axis 359a is inserted through a bearing 361 provided in the mission case 104, and is rotatable about an axis with respect to the bearing 361, and is not movable in the axial direction (immovable in the vertical direction). . Since it is rotatable around the axis, the longitudinal axis 359a rotates by the rotation of the handle 359d. In addition, the bearing 361 is provided on the right side of the mission case 104 so that the bearing 361 can be rotated when viewed from the side (rotating the left and right directions with the rotation axis). By rotating the daytime adjustment handle 359, the screw receiver 360a can be moved left and right as well as up and down, so that the tension arm 360 can rotate without resistance. However, one end of the longitudinal axis 359a may be configured such that the operation shaft can also be extended by the operation operation unit 109 via a bevel gear or a universal joint.

The belt type continuously variable transmission 352 is provided with an indicator 362 indicating the amount of shift by the weekly adjustment handle 359.

As shown in FIG. 32, in the side cover 363 which covers the mission case 104 from the right side of the mission case 104, the movement direction (rotation trace) of the support shaft 364 of the tension roller 358 is shown. Elongated holes 363a are formed, and the support shaft 364 protrudes outward from the side cover 363 to be movable.

Here, the support shaft 364 is an axis | shaft which connects the tension roller 358 and the tension arm 360, and moves an arc shape by the rotation of the tension arm 360. As shown in FIG. And the indicator 362 which guides the support shaft 364 is comprised by providing the display part 363b comprised by the scale around the formation direction of the said long hole 363a. The indicator 362 is configured by using the positional change of the tension roller 358, and weekly information (current day distance) is displayed on the indicator 362.

As described above, the seedling implanter 101 is a belt type continuously variable speed that shifts the driving speed of the transplantation work device 150A in which the seedlings are transplanted in conjunction with the traveling of the body, and the transplantation work device 150A with respect to the travel speed. Device 352 is provided.

In the belt-type continuously variable transmission device 352, a tension roller 358 is provided between the pulley on the input side and the pulley on the output side, and shifted by rotation of the tension arm 360 supporting the tension roller 258. An indicator 362 is provided in the vicinity of the moving part of the tension arm 360.

In this embodiment, the pulley on the input side may be the continuously variable pulley 353, and the output pulley may be the output pulley 354 or the continuously variable pulley as the output side.

For this reason, the operator can visually confirm the adjusted weekly value, thereby ensuring the reproducibility of the weekly adjustment. Therefore, the operability of the seedling transplanter 101 is improved.

In addition, in the present embodiment, a screw for screwing the weekly adjusting handle 359 and the weekly adjusting handle 359 for providing the moving mechanism of the tension roller 358 to the base and connecting the tension arm 360 with the screw. The support shaft 364 of the tension roller 358 is used as the guide of the indicator 362.

Therefore, the indicator 362 can be manufactured with a simple configuration, leading to cost reduction.

In addition, in this embodiment, although the guide | indication in the said indicator is made into the support shaft 364 provided in the tension roller 358, it is not limited to this structure. As the arrangement position of the indicator, the screw holder 360a provided at the end of the tension arm 360 opposite to the support shaft 364 may be used, for example.

That is, in the case where the position change occurs (except for the rotation of the longitudinal axis 359a, etc.) in conjunction with the operation of the weekly adjusting handle 359, any part from the weekly adjusting handle 359 to the tension roller 358. Instructions may be provided in the.

Here, with reference to Fig. 33, a description will be given of an embodiment (second embodiment) in which the configuration of the indicator is different. In the belt type CVT 365 according to the second embodiment, the configuration of the indicator for displaying the weekly information is different. In the following, about the same member as the belt type continuously variable transmission 352, the same code | symbol is used and description is abbreviate | omitted.

As shown in FIG. 33, the belt type continuously variable transmission 365 also has the indicator 366 comprised using the position change of the support shaft 364 of the tension roller 358. As shown in FIG.

The indicator 366 is provided with the long hole 367a formed in the upper cover 367 which coats the mission case 104, and the guide 368 which can move along the formation direction of the said long hole 367a. . On the other hand, the formation direction of the long hole 367a becomes an up-down direction, and the display part 367b which recorded the scale was provided in the circumference | surroundings along the formation direction of the long hole 367a.

The guide 368 and the support shaft 364 are connected via a connecting rod 369. In addition, the guide 368 is controlled to be moved by a guide member provided around the long hole 367a so as to be free to move only along the direction in which the long hole 367a is formed. In connection with the movement of the circular orbit of the tension roller 358, the connecting rod 369 moves, and the guide 368 moves along the forming direction of the long hole 367a.

With the above configuration, weekly information is displayed on the indicator 366.

As mentioned above, also in the belt type continuously variable transmission 365, the movement mechanism of the tension roller 358 connects the weekly adjustment handle 359, the said weekly adjustment handle 359, and the tension roller 358. It consists of links. This link is referred to as a first link for convenience of explanation.

In addition, the guide provided in the indicator 366 is to be connected via the connecting rod 369 from the moving mechanism. Here, the connecting rod 369 is a link connecting the guide shaft and the support shaft 364 which is part of the moving mechanism. The link is a link (second link) different from the first link.

Therefore, the arrangement position of the indicator 366 indicating the weekly information can be set irrespective of the arrangement position of the first link. Therefore, the visibility of the indicator 366 by an operator is easy, and operation is improved.

In addition, in another embodiment of the present invention, the portion where the guide 368 of the indicator 366 is connected via the connecting rod 369 (second link) is a support shaft 364 among the moving mechanisms. It is not limited to this site. If it is a part (except rotation of the longitudinal axis 359a, etc.) which a position change generate | occur | produces by operation of the daytime adjustment handle 359 (that is, a part in a movement mechanism), the tension roller 358 from the weekly adjustment handle 359 Any site up to) may be used.

Next, the hydraulic control of the hydraulic cylinder 228 will be described.

As shown in FIG. 34, the hydraulic direction change valve 378 and the hydraulic lock valve 370 are provided on the flow path for supplying hydraulic oil from the hydraulic pump 379 to the hydraulic cylinder 228. As shown in FIG.

In addition, the hydraulic pump 379 is provided in front of the mission case 104, as shown to FIG. 16, FIG.

The hydraulic direction change valve 378 is connected to the upper and lower levers 349 via the lifting links 382, and the operator can switch between the operation operation units 109. In addition, the hydraulic lock valve 370 is connected to the hydraulic lock lever 371 via the opening / closing link 383, and the operator can switch between the hydraulic operation lever 109.

The hydraulic direction switching valve 378 is switched by the upper and lower levers 349 provided in the driving operation unit 109, and is capable of switching three positions of 'gas up', 'neutral', and 'gas down'.

 In switching the gas rise, pressure oil is supplied to the hydraulic cylinder 228, and the lifting link mechanism is driven so that the gas rises against its own weight. In the change of the "gas lowering", the oil in the hydraulic cylinder 228 is opened, and the oil is drained to the working oil tank 108 with the lowering of the gas by its own weight. In addition, in the conversion of 'neutral', the oil in the hydraulic cylinder 228 is locked, and the gas is kept in a neutral state without rising or falling.

The hydraulic lock valve 370 is a valve for switching the flow path for supplying the hydraulic oil to the hydraulic cylinder 228 to an open or closed state.

In the state where the hydraulic lock valve 370 is switched to 'closed', the flow path is closed regardless of the switching of the hydraulic direction change valve. The function is similar to the "neutral" switching of the hydraulic directional valve, and the gas is kept in a neutral state. In addition, when the hydraulic lock valve 370 is switched to "open", switching of the hydraulic direction change valve 378 becomes effective, and the gas can be raised and lowered.

That is, the hydraulic lock valve 370 is a means for maintaining the up-and-down position of the gas in a neutral state, and ensures the "neutral" switching by the hydraulic direction change valve 378.

The opening / closing operation means of the hydraulic lock valve 370 is demonstrated.

As shown in FIG. 30, the hydraulic lock valve 370 is provided in front of the main fork rod 440. The opening / closing operation means of the hydraulic lock valve 370 is the same as the said switching operation means of the said main transmission, and it is set as the structure which also combines some structural members.

As shown in FIG. 16, FIG. 17, FIG. 25, FIG. 28, and FIG. 29, the hydraulic lock lever 371 which is an opening / closing operation means of the hydraulic lock valve 370 by an operator is behind the seedling supply part 107. It is arranged. The hydraulic lock lever 371 is connected to the hydraulic lock valve 370 through the opening and closing link 383 below the seedling supply unit 107.

25 and 29, the main shift lever 342 and the hydraulic lock lever 371 are arranged at positions overlapping the rear view.

The configuration of the opening and closing link 383 will be described.

As shown to FIG. 29, FIG. 30, the link rod 372 which is an elongate member is arrange | positioned toward the back of the seedling supply part 107 from the left side of the mission case 104. As shown to FIG. The link rod 372 is provided above the link rod 443. And at the left side of the mission case 104 and the rear end of the base frame 376, it is supported by the receiving member in the horizontal direction about front and back. Both receiving members are the same as the receiving members of the link rod 443 (to be described below).

Therefore, the arrangement position of the link rod 372 is the lower side of the seedling supply part 107 (the seedling conveyance port 148 row) in an up-down position. Moreover, in the left-right direction, it is between the right and left transplantation openings 151 * 151.

As shown in FIG. 26, FIG. 30, the receiving member in the front of the link rod 372 is the said rod base 444. As shown in FIG.

In the rod support 444, insertion holes are formed in the support portions 444a and 444b positioned before and after, respectively, for inserting the link rod 372 into the rod support 444. It is supposed to be rotatably supported.

The front end of the link rod 372 is connected to the valve switching shaft of the hydraulic lock valve 370, and the hydraulic lock valve 370 can be switched by the coaxial rotation of the link rod 372. .

As shown in FIGS. 25A and 25B, the receiving member at the rear of the link rod 372 is the support plate 347.

The bearing 373 is fixed to the support plate 347 above the pillow block 348, and the link rod 372 is provided on the bearing 373 so as to be rotatable. The link rod 372 is rotatably supported by the gas frame by the front rod support 444 and the rear bearing 373.

As shown to FIG. 25A, 25B, the hydraulic lock lever 371 is fixed and provided in the rear end of the link rod 372. As shown to FIG. The hydraulic lock lever 371 is provided to extend upward from the link rod 372.

Thus, the operator rotates the hydraulic lock lever 371 from side to side, by using the opening and closing link 383 made of the link rod 372 and the like, the opening and closing of the hydraulic lock valve 370 is switched, the hydraulic lock valve 370 ) Operation is possible. The switching position by the left-right rotation of the hydraulic lock lever 371 becomes "closed" and "open" in order from the left.

On the said support part 347a, the display part 347c is provided corresponding to the switching position by the hydraulic lock lever 371, and the display part 347c displays the letters "closed" and "dog".

Here, the seedling transplanter 101 is provided with the transplantation opening machine 151 * 151 which moves up and down and transplants a seedling, and the hydraulic cylinder 228 which raises and lowers the support frame of the transplantation opening machine 151 * 151. will be. In the present embodiment, the support frame of the implantation opening machine 151 is a base frame made of the handle frame 106, the rear frame 105, and the like.

And the opening / closing operation means of the hydraulic lock valve 370 of the hydraulic cylinder 228 is made into the hydraulic lock lever 371, The said hydraulic lock lever 371 is the operation handle (handle frame 106) extended to the rear of a base body. It is supposed to be provided.

Therefore, the operator can hydraulically lock the hydraulic cylinder 228 without falling from the operation position with the operation handle (handle frame 106). Thus, the operability of the seedling transplanter is improved.

Next, another embodiment of the opening and closing operation means of the hydraulic lock valve 370 will be described with reference to FIG. 24.

As shown in FIG. 24, in the hydraulic control mechanism of the hydraulic cylinder 228 in another embodiment, the gas up / down lever 349 is interlocked with the hydraulic lock lever 371, and the gas up and down lever 349 is provided. The hydraulic direction change valve 378 and the hydraulic lock valve 370 can be switched in operation.

One end of the plate 386 extends on the inner side of the movable base of the upper and lower levers 349, and the other end of the plate 386 is fixed to one end (right end) of the connecting rod 385. The connecting rod 385 is slidably supported by the gas, and the connecting rod 385 is biased in the right direction by the spring 387. The other end of the connecting rod 385 is connected to the hydraulic lock lever 371. With such a structure, it is possible to hydraulically lock the base up / down lever 349 by rotating it in the lock direction (left direction) from a neutral position.

Here, the seedling transplanter in another embodiment also includes a transplanting opening machine 151 · 151 for lifting up and down to transplant the seedlings, and a hydraulic cylinder 228 for lifting up and down the support frame of the transplantation opening machine 151 · 151. It is to be provided. In the present embodiment, the support frame of the implantation opening machine 151 is a base frame made of the handle frame 106, the rear frame 105, and the like. Moreover, the switching lever (gas up-down lever) 349 of the hydraulic direction change valve 378 of the hydraulic cylinder 228 is provided in the operation handle (handle frame 106) extended to the rear of a body.

And the switching lever 349 of the hydraulic direction change valve 378 of the hydraulic cylinder 228 and the closing switching means of the hydraulic lock valve 370 are interlocked.

Therefore, it is not necessary to provide the opening and closing operation means of the hydraulic lock valve 370. In addition, by the interlocking configuration, when the seedling transplanter is stopped in the paddy field, the hydraulic neutralization (fixing of the upper and lower positions of the gas) can be performed at all times, thereby improving the operability of the seedling transplanter.

Claims (2)

And a seedling supply unit disposed on the body main body, and a seedling mounting stage disposed on the side of the seedling supply unit, wherein the seedling mounting stage is horizontally rotatable, and configured to move up and down, the seedling supplying unit; In the seedling implanter of the structure by which the seedling mounting stage rotated to the said seedling supply part side is arrange | positioned up and down, what provided the said seedling implanter with the regulating means which regulates the fall of the seedling mounting base rotated to the upper position of the said seedling supply part to predetermined height. A seedling transplanter characterized by. The method of claim 1, The seedling supplying part is provided with the transplantation opening machine which transplants seedlings up and down, The said seedling supply part supplies a seedling to the said transplantation opening part, The said seedling supply part is set as the structure which drives rotationally the seedling conveyance port connected to the ellipse shape, The said seedling The seedlings are dropped at an appropriate position of the movement trajectory which becomes an elliptical shape of the conveyance port, and the seedlings are received in the transplant opening and transplanted into the paddy field, and the seedling conveyance port is provided with a shutter which enables opening and closing of the bottom surface. And the shutter is forcibly elastically biased in the opening direction by the elastic biasing means.

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