JP2599323Y2 - Rice transplanter - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice transplanter, and more particularly, to a rice transplanter having a seedling table supported reciprocally along a guide rail having a seedling removal plate.

[0002]

2. Description of the Related Art Conventionally, in this seedling transplanter, a seedling mounting table is supported on a guide rail attached to the machine body so as to be able to reciprocate in the machine body width direction. A seedling set to take out the seedling set on the seedling mounting surface from the outlet of the seedling extracting plate provided on the guide rail and plant it on the paddy soil surface is provided, and a projection is provided at an intermediate portion of the seedling mounting table in the seedling feeding direction. A vertical feed device including a transfer belt with a guide is disposed, and when the seedling mounting table is moved to both end positions in the machine body width direction by reciprocation, the transfer belt is rotated by a predetermined pitch, and the protrusion of the transfer belt is used. The set seedlings on the seedling mounting table are forcibly conveyed to the planting nail side, and the seedlings are taken out by the planting nails, while being disposed on both sides of the seedling mounting surface of the seedling mounting table. On the lower side of the vertical rib, at a predetermined distance from the seedling mounting surface, By mounting the seedling retainer, and pressing the set seedling elastically from above on the seedling mounting surface side, the set seedling conveyed to the planting claw side by the vertical feeder may be lifted or laterally shifted. The removal of seedlings by the planting claws is reliably and satisfactorily performed while preventing the planting from occurring. Further, in order to prevent interference with the planting claw, the seedling presser may be configured such that a mounting base of the seedling presser is located at a lower side of a vertical rib in the seedling mounting table, and a seedling is provided by the planting claw of the seedling mounting table. Support above the extraction point,
The support portion extends upward along the seedling mounting surface of the seedling mounting table.

[0003]

However, in the above construction, the mounting base of the seedling presser is supported below the vertical ribs on the seedling mounting table and above the place where the seedlings are taken out by the planting claws. Since it is extended from the support site to the upper side along the seedling mounting surface of the seedling mounting table, in a portion facing the seedling press above the seedling mounting table, a good seedling due to the seedling presser is provided. Although a holding effect can be exerted, a non-pressed portion of the seedling where the seedling press does not act occurs near the place where the seedling is removed by the planting claw on the lower side of the seedling mounting table, and the non-pressed portion, that is, the planting claw is used. Near the seedling removal point,
The set seedlings were lifted up or laterally displaced, so that the seedlings could not be taken out by the planting nails, resulting in a problem of causing a lack of stock.

[0004] Therefore, the present inventors have proposed a sub-seedling made of a small-diameter elastic wire rod extending to the side where the seedlings are taken out by the planting claw, near the attachment point of the seedling holder below the vertical ribs in the seedling mounting table. A presser foot is attached, and the set of seedlings is pressed by not only the upper side of the seedling mounting table but also the set seedling located at the lower end near the place where the seedlings are taken out by the planting claws from above. It is possible to reliably prevent the set seedlings from floating or causing lateral displacement over almost the entire range of the mounting table, and to reliably and satisfactorily take out the seedlings by the planting claws without inviting the occurrence of lack of stock. The idea was to increase planting accuracy.

In a conventional rice transplanter, in order to adjust the amount of seedlings to be taken out by the planting claws, a seedling removal plate provided on the guide rail cannot be moved up and down with respect to the seedling mounting table.
By vertically adjusting the seedling removal plate with respect to the seedling mounting table, the penetration depth of the planting claw with respect to the seedling removal plate is adjusted, so that the amount of seedling removal by the planting claw can be adjusted. .

Thus, as described above, in a rice transplanter in which the seedling extracting plate can be adjusted up and down with respect to the seedling mounting table,
In the case where the sub-seedling presser is provided together with the seedling presser on the lower side of the vertical rib in the seedling mounting table, the seedling extracting plate is moved up and down with respect to the seedling mounting table so as to adjust the amount of seedlings taken out by the planting claws. When adjusted, the interval between the seedling removal plate and the sub-seeding holder supported on the seedling mounting side will fluctuate, so, for example, to increase the amount of seedling removal by the planting claw,
When the seedling removal plate is moved downward with respect to the seedling mounting table, the sub-seedling presser is positioned at a predetermined mounting position, but the set seedling on the seedling mounting table is adjusted for movement of the seedling removal plate. Is moved downward with the seedling holding action of the sub-satellite presser on the downwardly moving portion of the set seedling is not exhibited. In the vicinity of the place where the seedlings are taken out by the planting claws, the set seedlings rise or shift laterally, so that the seedlings cannot be taken out reliably and favorably by the planting claws.

[0007] The object of the present invention is to make it possible to adjust the amount of seedlings taken out by the planting claws, but not only on the upper side of the seedling mounting table but also on the lower end side near the seedling mounting point by the planting claws.
It is possible to reliably prevent the seedlings set on the seedling mounting table from floating or causing lateral displacement, and to reliably and satisfactorily take out the seedlings with the planting claws without inducing the occurrence of a lack of stock. To provide a rice transplanter capable of improving planting accuracy.

[0008]

The rice transplanter according to the present invention is:
A movable seedling mounting table having a seedling mounting surface, and a seedling removal unit for cutting out and removing the seedlings of the set seedlings on the seedling mounting surface by planting claws, and guiding movement of the seedling mounting table. And a sub-satellite presser attached to the seedling mount and pressing / releasing the set seedlings to / from the seedling mounting surface, and a sub-satellite presser shorter than this. The guide rail can move up and down with respect to the planting claw, and the main seedling presser and the sub seedling presser are individually mounted so as to be able to move up and down.

[0009]

On the upper side of the seedling mounting base 85, the set seedlings on the seedling mounting base 85 are pressed against the mounting surface side of the seedling mounting base 85 by the main seedling holder 10, and the seedling mounting base 85 The set seedlings are pressed against the placement surface side by the sub-satellite presser 20 near the place where the seedlings are taken out by the planting claws on the lower end side of the seedling.
The seedlings can be reliably prevented from floating or laterally offset over almost the entire range of the seedling mounting table 85 from the upper side of the seedling to the lower end side near the place where the seedlings are taken out by the planting claws. Without inviting the seedlings, the seedlings can be reliably and satisfactorily taken out by the planting nails, and the planting accuracy can be improved.

When adjusting the amount of seedlings to be taken out by the planting claw, the seedling mounting table and the guide rail are both moved up and down with respect to the planting claw, and To adjust the amount of seedlings to be taken out from the seedling table with the planting claw, at this time, the guide rail is moved up and down together with the seedling table,
Since the sub seedling presser is supported by the seedling mounting table together with the main seedling presser, the interval of the sub seedling presser from the seedling take-out portion of the guide rail does not change. Therefore, even in the case of adjusting the amount of seedlings taken out by the planting claws, the set seedlings located at the lower end side of the seedling mounting table, that is, near the seedling taking-out part by the planting claws, are surely secured from above by the sub-seedling holder. By pressing, the set seedlings can be prevented from lifting up or causing lateral displacement, and the seedlings can be satisfactorily taken out by the planting claws without inviting the occurrence of stock deficiency. In addition, since the main seedling presser and sub-seedling presser are individually movable so that they can be moved up and down, when placing the set seedlings on the seedling mounting surface of the seedling mounting table, the size of the set seedlings, the soft state, etc. By adjusting the position of the main seedling holder up and down, the holding force of the set seedling can be made appropriate, and it is possible to properly prevent the set seedling from lifting and laterally shifting until the set seedling reaches a predetermined remaining amount. it can.
Moreover, when the amount of the set seedlings on the seedling mounting table is reduced and the seedlings remain only on the side opposite to the sub-seedling presser and its own weight is light, adjust the position of the sub-seedling presser downward. Since the holding force of the set seedling can be increased, it is possible to favorably prevent the set seedling from turning up or forming into a dumpling.

[0011]

FIG. 5 shows a riding type multi-row type rice transplanter. This rice transplanter has an engine 2 mounted on an upper front portion of an airframe 1 and the outer periphery of the engine 2 is covered with a bonnet 3. At the same time, a driver's seat 4 provided with a control seat 41 and a steering wheel 42 is provided at an upper rear portion of the fuselage 1, and a pair of left and right front wheels 5 is supported on both front sides of the fuselage 1, and
A pair of right and left rear wheels 6 driven by the engine 2 are supported on both rear sides of the body 1. In addition, a seedling plant 8 is supported at the rear of the body 1 via a parallel link mechanism 7 having a top link 71 and a pair of left and right lower links 72 so as to be vertically movable. 8
Is a planting case 81 to which rotational power is transmitted from the engine 2, a plurality of transmission cases 82 supported so as to be able to transmit power in the body width direction of the planting case 81, and the transmission case 82 is rotatable freely. The plant includes a plurality of supported planting claws 83, a plurality of floats 84 that receive and support the entire load of the planting device 8, and a seedling mounting table 85 that entirely reciprocates in the machine body width direction.

More specifically, as shown in FIGS. 1 and 5, the seedling mounting table 85 has a plurality of vertical ribs 85a and a seedling mounting surface disposed on the bottom side between the vertical ribs 85a. A bottom plate 85b, and an opening plate 85c provided at a lower end side of the bottom plate 85b, and upper and lower rail frames 85d extending in the body width direction at upper and lower portions on the back side of the bottom plate 85b.
85e, a rolling element 87 provided on a support rod 86 extending upward from the planting case 81 is inserted into the upper rail frame 85d, and the lower rail frame 85e is inserted.
Is slidably supported on a guide rail 89 fixed to a bracket 88 extending from the transmission case 82, and the entire seedling mounting table 85 is moved in the width direction with respect to the machine body 1 through the respective rail frames 85d and 85e. Reciprocable. Also,
The guide rail 89 is provided with a seedling extraction plate 89a having a plurality of slits (seedling extraction portions) disposed below the seedling mounting table 85. Then, the planting claws 83 are made to protrude, and the seedlings on the seedling mounting table 85 are taken out by the planting claws 83 and are planted on the paddy soil surface.

When the seedling table 85 moves to both ends in the machine width direction by reciprocating movement, the set seedlings on the bottom plate 85b are placed at the intermediate portion of the seedling table 85 in the vertical direction. A vertical feeding device 9 for forcibly transporting the seedlings on the bottom plate 85b by the vertical feeding device 9 to the planting nails 83 side by the vertical feeding device 9 is provided on the side.
To securely take out the seedlings from the seedling mounting table 85.

A plurality of the vertical feeding devices 9 are provided between the vertical ribs 85a and provided in accordance with the number of planting strips.
As shown in FIGS. 1 and 4, the vertical feeder 9 includes a plurality of support frames 91 arranged vertically in the machine body width direction on the back side of the bottom plate 85 b of the seedling mounting table 85.
And a common driven and driven shaft 92, 93 supported on the upper and lower portions of each support frame 91, and a plurality of driven and driven rollers 94, rotatably supported on the respective shafts 92, 93.
95, and a plurality of transport belts 96 each of which has a number of projections 96a that are wound around these rollers 94 and 95 and protrude outward with respect to the bottom plate 85b of the seedling mounting table 85. 4, a drive shaft 93 protruding from both sides of the transport belt 96 below the support frame 91 located at the center of the drive shaft 92 in the longitudinal direction and below the center portion in the machine body width direction. A pair of left and right cylindrical rotating bodies 97, 97 having a one-way clutch 97a mounted on at least one side, and swinging arms 97b protruding from each of the rotating bodies 97 are substantially reversed in cross section extending in the machine width direction. An L-shaped connecting member 97c is used to connect the cam body 98 to the intermediate position of the connecting member 97c at the center position in the width direction of the transport belt 95 located at the center portion in the machine width direction. Therefore, the rotating shaft 100 that constantly rotates during seedling planting operation is protruded to both sides by the internal transmission mechanism, and the rotor 99a that is in contact with the cam body 98 is attached to both ends of the rotating shaft 100. Tsu was providing the operating arm 99, 99.

When the seedling mounting table 85 moves to one end position in the machine body width direction during the seedling operation, the cam body 98 faces one of the operating arms 99, 99 which is always rotating. By pushing the cam body 98 with the rotor 99a of the operation arm 99, the connecting member 97 is pushed.
c, the swing arm 97b is swung, the drive shaft 93 is rotated by a predetermined angle via the one-way clutch 97a, and the transport belt 96 is rotated by a predetermined pitch in the seedling feeding direction. The seedlings set on the seedling mounting table 85 are forcibly conveyed to the planting claws 83 by the projections 96a provided on the conveyor belt 96, and the seedlings are reliably removed by the planting claws 83, and They are planted on the soil surface.

Thus, in the rice transplanter described above,
The seedling removal board 89a and the seedling mounting table 85 are moved in the vertical direction to adjust the seedling collection position, and the seedlings placed on the seedling mounting surface of the seedling mounting table 85 are placed on the seedling mounting table 85. The main seedling presser 10 and the sub-seedling presser 20 that are pressed against the seedling mounting surface are attached.

Specifically, as clarified in FIG.
The bracket 8 for fixedly supporting the guide rail 89
8, a pair of elongated holes 88a, 88a extending in the vertical direction are formed, and fixing brackets B, B, such as bolts, are inserted through the elongated holes 88a to the transmission case 82 side. 89 so that the inner space S of the upper rail frame 85d into which the rotator 87 provided on the support rod 86 is inserted corresponds to each of the long holes 88a of the rotator 87. The internal space S and each of the long holes 88 are formed so as to allow the vertical movement.
In the range of a, the entire seedling mounting table 85 and the guide rail 89 having the seedling extraction plate 89a can be moved up and down with respect to the planting claw 83.

When adjusting the amount of seedlings to be taken out by the planting claws 83, the entirety of the seedling mounting table 85 and the guide rail 89 having the seedling taking-out plate 89a is set in the internal space S of the upper side rail frame 85d. And each slot 88 of the bracket 88
a to move the planting claw 8
By adjusting the depth of entry 3 with respect to the seedling mounting table 85 side, the amount of seedlings taken out from the seedling mounting table 85 by the planting claws 83 can be adjusted.

As clarified in FIGS. 1 and 2,
Each of the vertical ribs 85a of the seedling mounting table 85 has
a into the seedling mounting table 85 from the upper part near the place where the seedlings are taken out by the planting claws 83, and the bottom plate 85
b, a plurality of rod-like main seedling holders 10 each having a substantially L shape and extending upwardly of the vertical feeding device 9 at a predetermined interval are attached. The set seedlings on the bottom plate 85b conveyed by the feeding device 9 are elastically pressed from above to remove the seedlings by the planting claws 83 while preventing the set seedlings from floating or causing lateral displacement. This ensures that the planting claws 83 take out the seedlings from the seedling mounting table 85 reliably and satisfactorily, thereby increasing the planting accuracy.

Further, each of the main seedling holders 10 is supported by a vertical rib 85a of the seedling mounting base 85 via a height adjusting device A so as to be vertically movable independently of the sub-seedling holder 20. Each of the main seedling holders 1 is set in accordance with the size of the seedling set on the seedling mounting table 85 by the height adjusting device A, the state of softness, and the like.
By performing the height adjustment of 0, the seedling set 85 can be reliably and smoothly transported and supplied to the planting claw 83 side in any state, without causing the occurrence of a lack of stock.
The planting claws 83 allow a reliable planting operation.

More specifically, the height adjusting device A of the seedling presser 10 is configured as shown in FIGS. 1 and 2, that is, at the lower side of the vertical rib 85 a in the seedling mounting table 85, A mounting base 11 having a tubular portion 11a was fixed to an upper portion near the place where the seedlings were removed by the planting claws 83 via a fixing bracket B such as a bolt, and bent into a rectangular shape on the tubular portion 11a. The support 12 is inserted and fixed, and the support 1 is fixed.
A plurality of locking grooves 12a are formed in the upper end side of the upper part 2 in a vertically stepped manner, and a cylindrical support 13 is movably inserted into the column 12. In addition, a connecting plate 14 is integrally attached to the lower side of the peripheral surface of the support body 13, and the connecting plate 14 is provided with a shaft rod 14 a protruding in the machine body width direction, and a base end side of the main seedling presser 10. Is provided with a cylindrical shaft 10a.
a is inserted into and supported by the shaft rod 14a, and a bracket 15 having a substantially U-shape is integrally attached to the upper side of the peripheral surface of the support 13 facing the connecting plate 14, and the bracket 15 is At the tip, a locking groove 12a of the support 12
A substantially L-shaped holder 16 made of an elastic material having an engaging portion 16a elastically engaged with the holding member 16 is always urged in the engaging direction of the engaging portion 16a into the locking groove 12a. In this state, the operation piece 17 is fixed via a fixing bracket B such as a bolt or a nut, and the tip of the holding body 16 is provided with an operation piece 17 capable of releasing the engagement of the engagement portion 16a with the engagement groove 15a. Is attached via a fixing bracket B such as a bolt or a nut.

Further, near the attachment portion of the main seedling retainer 10 in the vertical rib 85a of the seedling mounting table 85, from the vicinity of the attachment portion to the seedling extraction plate 89a along the bottom plate 85b of the seedling mounting table 85. And a substantially L-shaped sub-seedling holder 20 made of an elastic wire such as a piano wire having a diameter smaller than that of the main seedling holder 10 is arranged. By pressing the set seedling near the take-out plate 89a against the seedling mounting surface side, it is possible to prevent the seedlings located near the seedling take-out plate 89a, that is, near the place where the seedlings are picked up by the planting claws 83 from rising or laterally shifting. The seedlings can be reliably and satisfactorily taken out by the planting claws 83 without causing a lack of stock.

The sub-seedling retainer 20 is individually and vertically movably supported via a height adjusting device C different from the height adjusting device A on the main seedling retainer 10 side. According to the condition of the seedlings set on the mounting table 85, the height of the seedling holders 10 and 20 with respect to the set seedlings can be individually and independently adjusted up and down.
When the number of the set seedlings on the top 5 decreases and the seedlings are placed only on the lower side of the seedling mounting table 85 facing the sub-seeding holder 20, the height of the sub-seeding holder 20 is lowered. By increasing the pressing force of the seedling by the sub-seedling presser 20, the seedling is reliably prevented from turning up or forming into a dumpling, and the seedling can be taken out by the planting claw 83 satisfactorily. To do so.

More specifically, the height adjusting device C of the sub-seedling holder 20 is configured as shown in FIGS. 1 and 2, that is, the height adjusting device C provided on the vertical rib 85 a of the seedling mounting base 85. An adjustment plate 23 having an elongated hole 22 extending in the vertical direction is supported via a bracket 21 on the lower side in the vicinity of the mounting base 11, and a fixing tool B such as a bolt or a nut is inserted into the elongated hole 22 of the adjustment plate 23. The support 24 bent in a substantially L-shape is mounted so as to be vertically adjustable, and the mounting base of the sub seedling presser 20 is disposed on the support 24, while the outer side of the support 24 on the mounting base. , Two upper and lower holding plates 25 and 26 are movably provided via a fixing bracket B,
A spring 27 is interposed between the presser plates 25 and 26 around the fixing bracket B, and the resilient force of the spring 27 causes the mounting base of the sub-planter presser 20 to pass through the presser plates 25 and 26. The sub-seedling presser 20 is supported with the support 24 by elastically pressing and supporting the
Is vertically adjustable within the range described above, and is elastically pressed and supported against the support 24.

As shown in FIG. 2, the sub-seedling presser 20 is formed in a substantially U-shape in plan view having two pressers 20a and 20b.
b is pressed and supported on the support 24 side by the holding plates 25 and 26 in which the springs 27 are interposed, and the holding portions 20a and 20b are held by the main seedling holding 10
Are arranged on both sides in the machine width direction. When such a configuration is employed, each holding portion 20 of the
a, 20b, it is possible to reliably and satisfactorily exert the seedling holding effect near the place where the seedlings 83 are taken out by the planting claws 83 on the lower side of the seedling mounting table 85, and take out the seedlings by the planting claws 83. Can be performed reliably, and the planting accuracy can be improved.

Next, the operation of the above configuration will be described. During the seedling operation by the rice transplanter, the seedling table 85
When adjusting the height of the main seedling presser 10 with respect to the bottom plate 85b of the seedling mounting base 85 according to the size of the seedlings set in the small or soft state, first configure the height adjusting device A. The operation piece 17 is pushed with a finger or the like against the elastic urging force of the holding body 16.
6 is easily detached from the locking groove 12a of the support 12, and the support 13, that is, the seed presser 10 is free to move with respect to the support 12, so that the support 13 The height of the seedling holder 10 is adjusted so that the seedling holder 10 is at the optimum height with respect to the seedling set on the bottom plate 85b while moving the seedling vertically with respect to the support column 12. By releasing the finger from the operation piece 17 after this adjustment, the engaging portion 16a of the holding body 16 is easily engaged with the locking groove 12a of the support 12 by the elastic biasing force, and the support 1
The support 13, that is, the seedling presser 10, is fixed to a predetermined optimum height position with respect to 2.

Therefore, the seedling presser 10 for the support 12
Of the seedling presser 1 is prevented by the holding body 16.
0 can be reliably held at the optimal height position for the set seedlings on the seedling mounting table 85, and the set seedlings can be securely and firmly placed on the side of the planting claws 83 without causing the set seedlings to float or shift sideways. It can be smoothly transported and supplied, and the height of the seedling presser 10 can be easily adjusted by operating the operation piece 17 even at a seedling planting work site such as a paddy field.

Further, the sub-seedling presser 20 is disposed at the lower end side of the seedling mounting table 85 near the mounting portion of the main seedling presser 10 and near the place where the seedlings 83 are taken out of the seedlings. The set seedlings of the seedling holder 85 are pressed against the mounting surface side by the sub seedling holder 20, so that the main seedling holder 10 exerts a holding effect on the set seedlings on the upper side of the seedling holder 85. Not only that, but also on the lower end side near the place where the seedling is removed by the planting claw 83,
Thereby, it is possible to reliably prevent the set seedlings from floating or causing lateral displacement, and to reliably and satisfactorily take out the seedlings with the planting claws 83 without causing the occurrence of a lack of stock, thereby improving the planting accuracy. Can be enhanced.

Further, the height of the sub-seedling holder 20 is adjusted by the height adjusting device C independently and independently of the main seedling holder 10 according to the state of the seedling set on the seedling mounting table 85 or the like. For example, the set seedlings on the seedling mounting table 85 are consumed during the seedling work by the rice transplanter,
In the case where seedlings are placed only on the lower side of the seedling mounting table 85 facing the sub seedling holder 20, the seedling mounting table 8
5, the sub seedling presser 20 is adjusted downward with respect to the bottom plate 85b. That is, the support 24 on which the sub seedling presser 20 is supported is adjusted by loosening and tightening the fixing bracket B. It adjusts downward movement along the long hole 22 of
Then, the pressing force of the seedling by the sub-seedling presser 20 is increased, and it is possible to reliably prevent the seedling from turning up or forming into a dumpling, so that the removal of the seedling by the planting claw 83 can be performed well. it can. Further, the sub-seedling presser foot 20 is
Since the sub-seedling presser 20 is formed of an elastic wire having a diameter smaller than that of the main-seedling presser 10, the sub-seedling presser 20 can be made lightweight so that the sub-seedling presser 20 can follow the set seedling without causing a large increase in body weight. As good, a reliable pressing effect of the set seedling by the sub-seedling presser 20 can be exhibited. Further, in the embodiment of each drawing, the height adjustment amount of the sub-seedling presser 20 by the height adjusting device C is made larger than the height adjustment amount of the main seedling presser 10 by the height adjusting device A. The sub seedling presser 20 can be adjusted to be lower than the main seedling presser 10 so that the seedlings are placed only on the lower side of the seedling mounting table 85. At this time, the height of the sub seedling presser 20 is adjusted to be lower than that of the main seedling presser 10, so that the seedlings are prevented from turning up or forming into a dumpling on the seedling mounting table 85, and the planting claw is formed. Thus, the removal of the seedling by 83 can be performed more favorably.

When adjusting the amount of seedlings to be taken out from the seedling mounting table 85 side by the planting claws 83, the fixing bracket B inserted into each long hole 88a of the bracket 88 is relaxed and tightened. By moving the entire seedling mounting table 85 and the guide rail 89 having the seedling extraction plate 89a up and down within the range of each of the long holes 88a and the internal space S provided in the upper rail frame 85d. By adjusting the depth of the planting claw 83 with respect to the seedling mounting table 85 side, the amount of seedlings taken out from the seedling mounting table 85 by the planting claw 83 is adjusted.

At the time of adjusting the amount of seedlings to be taken out by the planting claws 83, the seedling take-out plate 89a is moved up and down together with the seedling rest 85, and the sub-seedling presser 20 is moved together with the main seedling presser 10 into the seedling rest. Since it is supported by the vertical ribs 85a of the sub-plant 85, the interval between the sub-plant presser 20 and the sub-plant take-out plate 89a does not fluctuate. However, the set seedlings located at the lower end side of the seedling mounting table 85, that is, near the place where the seedlings are removed by the planting claws 83, are securely pressed from above by the sub-seedling presser 20, and the set seedlings rise or move laterally. Therefore, it is possible to reliably and satisfactorily take out the seedlings by the planting claws 83 without causing the occurrence of a lack of stock.

As shown in FIG. 1 and FIG. 3, the main seedling presser 10 and the sub-seedling presser 20 are preferably mounted such that a part of each of the seedling pressers 10 and 20 wraps with each other. When carrying out, the set seedling conveyed on the seedling mounting table 85 is divided into the main seedling presser 10 and the sub-seedling presser 2.
Since the seedlings can be conveyed to the planting claw 83 side while being continuously pressed at 0, the set seedling can be prevented from being shifted laterally or turned up more favorably, and the removal of the seedling by the planting claw 83 can be reliably and well performed. To increase the planting accuracy.

In a conventional rice transplanter, as shown in FIG. 3, a friction is made on the lower end side of the seedling mounting table 85 near the place where the seedlings 83 are picked up by the seedling claw 83 so as to face the sub seedling presser 20. A plate 85f is provided, and the seedling N set on the bottom plate 85b of the seedling mounting table 82 is pressed and held by the friction plate 85f and the sub seedling presser 20, but in such a configuration, In particular, when the number of the set seedlings N decreases, the friction plate 85f and the seedling removal plate 89 of the guide rail 89 are used.
a, the set seedling N was rolled into a dumpling, and the removal of the seedling by the planting claw 83 was sometimes inaccurate. Therefore, in the embodiment of FIG.
Part of the lower end side of the sub-seedling holder 20 is connected to the guide rail 8.
9 along the seedling extraction plate 89a, and bend toward the seedling mounting surface side of the seedling mounting table 85. The bent portion 20b of the sub-seedling retainer 20 makes contact with the seedling extraction plate 89a at the lower end side of the set seedling N. By receiving and supporting the opposing portion, the contact of the set seedling N with the seedling extraction plate 89a is eliminated, and the set seedling N is prevented from forming a dumpling.
To be able to take out reliably.

[0034]

[Effects of the Invention] As described above, according to the present invention,
Since the seedling mounting table and the guide rail can be moved up and down with respect to the planting claws, the amount of seedlings taken out by the planting claws can be adjusted. When the set seedlings are placed on the seedling mounting surface of the seedling mounting table, the position of the main seedling holder is adjusted up and down according to the size of the set seedlings, the soft state, etc. The holding power of the seedlings can be made appropriate,
Until the set seedlings reach the predetermined remaining amount, the set seedlings can be prevented from lifting and laterally offset. Moreover, when the amount of the set seedlings on the seedling mounting table is reduced and the seedlings remain only on the side opposite to the sub-seedling presser and its own weight is light, adjust the position of the sub-seedling presser downward. Since the holding force of the set seedling can be increased, it is possible to favorably prevent the set seedling from turning up or forming into a dumpling.

[0035]

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a part of a rice transplanter according to the present invention with a part cut away.

FIG. 2 is a rear view of the same.

FIG. 3 is a side view showing an example of attachment of a main seedling presser and a sub-seedling presser.

FIG. 4 is a partially cutaway rear view of the vertical feeding device.

FIG. 5 is a side view showing the entire structure of the rice transplanter.

[Explanation of symbols]

 85 Seedling stand 89 Guide rail 89a Seedling removal plate 10 Main seedling holder 20 Sub seedling holder

Claims (1)

(57) [Scope of request for utility model registration] A movable seedling mounting table having a seedling mounting surface;
Cut the seedling of the set seedling on the seedling mounting surface with a nail
It has a seedling removal part for removal, and moves the seedling mounting table
And a guide rail that guides the
Main seedling presser for pressing / releasing the set seedlings to the seedling mounting surface
And rice transplanters equipped with shorter
The seedling mounting table and the guide rail are attached to the planting claws.
The main seedling holder and the sub
A rice transplanter characterized in that the seedling holders can be individually moved up and down .