JPH04237412A - Seedling transplantation apparatus - Google Patents

Abstract

PURPOSE:To prevent the slip-down of seedlings on a seedling table by using a simple structure while preventing the abnormal longitudinal transfer of seedlings even if the anti-slip action of the longitudinal transfer tool on the seedling placed on the table is decreased according to the decrease of the residual seedlings on the table to position the upper end of the seedling table between a longitudinal transfer tool for seedling and a seedling supply port. CONSTITUTION:An anti-slip protrusion 27 is placed at a position between the action-end part of a longitudinal seedling transfer belt 17 and a seedling supply port 13 on the seedling-holding face S of a seedling table 9. The anti-slip protrusion 27 engages with the bottom face of the second lateral row B of the placed seedlings 12. The slip-down of the seedlings 12 on the table is prevented even if an empty part of seedling is formed under the second lateral row B by the delivery of the seedlings with a seedling transplantation claw 1 and the support of seedling with a seedling stopper 8a of a seedling table guide 8 is lost. The density of the anti-slip protrusions 27 is made to be larger at both lateral ends on the seedling table than at the center part in lateral direction.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention provides a seedling planting claw that can be freely driven to move up and down in a reciprocating state, and the seedling planting claw divides one seedling from the seedlings placed on a seedling stand. The seedling loading platform is provided to be able to slide back and forth in the lateral direction of the machine in conjunction with the seedling planting movement of the seedling planting claw, and the seedling vertical feeder is provided to act on the bottom side of the placed seedlings. A drive state in which the placed seedlings are vertically fed to the seedling supply port side, and a drive stop that engages the bottom side of the placed seedlings to prevent the placed seedlings from sliding down toward the seedling supply port side. The present invention relates to a seedling planting device that is provided on the back side of the seedling stand so as to be able to switch between different states.

0002

[Prior Art] The above-mentioned seedling planting device uses the vertical seedling feeder as a stopper to prevent the placed seedlings from slipping and descending toward the seedling supply port side of the seedling stand when vertical feeding of the seedlings is not necessary. It has been designed to ensure that In this seedling planting device,
Conventionally, as shown in Japanese Utility Model Application Publication No. 61-69924, for example, seedlings are placed on the seedling surface of the seedling platform at a location located between the vertical seedling feeder and the seedling supply port when viewed from the side of the seedling platform. The seedling presser to be pressed is provided so as to be freely switchable between a lowering action position and a lifting action release position, and when vertically feeding the seedlings, the seedling pressing tool is switched to the raising action release position in conjunction with the drive of the vertical seedling feeder, By providing a mechanism that automatically switches and operates the seedling holder so that it is in the downward action position when the seedlings are not being fed vertically, the upper end of the seedling tray can be adjusted to the position of the seedling as the placed seedlings are consumed. To prevent the placed seedlings from slipping down by the pressing action of a seedling presser even if a small number of seedlings have descended from the action end of the vertical feeder toward the seedling supply port side and the stopper action of the vertical seedling feeder is no longer effective. There was something that made it possible.

0003

[Problems to be Solved by the Invention] Conventionally, it has been necessary to mount the seedling holder so that it can be raised and lowered, and it has also been necessary to provide a switching mechanism for the seedling holder, which has reduced the number of required parts, manufacturing time, and assembly time. This made the structure more complex and disadvantageous. The purpose of the present invention is to provide a structure that can easily prevent the placed seedlings from falling off even if the number of seedlings is too small to be affected by the stopper action of the vertical seedling feeder, and to prevent the occurrence of defects in the vertical feeding of seedlings. The purpose is to do so.

0004

[Means for Solving the Problems] In order to achieve the object, the seedling planting device according to the present invention, in the above-mentioned device, locks the placed seedlings on the bottom side and disperses them in the lateral direction of the seedling platform. A plurality of anti-slip protrusions are provided to prevent the placed seedlings from slipping down toward the seedling supply port side when the vertical seedling feeding device is not driven, and to prevent the placed seedlings from sliding down toward the seedling supply port side when the vertical seedling feeding device is in the driving state. In a state that allows the movement of the placed seedlings by vertically feeding the feeder, furthermore, one seedling to be taken out by the seedling planting claw is arranged in parallel in the horizontal direction of the placed seedlings on the lower end side of the placed seedlings. An arrangement that acts on the placed seedlings in a second row of seedlings in which one seedling to be taken out is paralleled in the horizontal direction of the placed seedlings so that the seedlings to be taken out are next to the first row of seedlings. and provided at a location located between the action end of the vertical seedling feeder and the seedling supply port when viewed from the side of the seedling tray on the seedling loading surface of the seedling tray;
The arrangement density of the anti-slip projections on both lateral end sides of the seedling resting surface is higher than the arrangement density on the lateral center side of the seedling resting surface. Its action and effects are as follows.

[0005]

[Operation] As the number of seedlings placed on the table becomes small, the vertical seedling feeder no longer locks the seedlings, and the seedlings are consumed in the first row of seedlings and are placed under the second row of seedlings. Even if there is a spot where there are no seedlings on the side, the non-slip protrusions are locked in the second horizontal row of seedlings, and when the seedlings are not being fed vertically, the supporting force due to the locking of the non-slip protrusions prevents the weight of the placed seedlings from falling. When the seedlings are fed vertically, the vertical feeding force of the seedlings due to the vertical feeding action of the vertical seedling feeder and the weight of the placed seedlings is greater than the supporting force of the anti-slip protrusion. It is possible to cause the placed seedlings to slide toward the seedling supply port side by setting the acting force of the anti-slip protrusion. Increasing the number of anti-slip protrusions that act per unit area of placed seedlings will increase the effect of preventing the seedlings from slipping off, but on the other hand, the resistance to the seedlings will increase, causing the seedlings to slip when the seedlings are fed vertically. Vertical feed defects such as stiffness and deformation are likely to occur. In addition, by increasing the sliding resistance on both lateral ends of the seedlings, even if the sliding resistance on the center side is relatively small, the effect of preventing the seedlings from slipping off is almost the same as when increasing it uniformly over the entire width. . Therefore, by making the arrangement density of anti-slip protrusions at both lateral ends of the seedling surface higher than that at the center side, the slip resistance at both lateral ends of the seedlings placed on the seedlings is increased. The placed seedlings are less likely to fall off, and for that reason,
The sliding resistance on the center side becomes small, and the sliding resistance as a whole becomes smaller than increasing the sliding resistance on the center side, and the sliding during vertical feeding of the seedlings becomes relatively better.

[0006]

Effects of the Invention: By using a simple means of simply providing anti-slip protrusions at the above-mentioned locations on the seedling-resting surface with the above-mentioned difference in arrangement density, a small amount can be produced while preventing deformation etc. during vertical feeding of the seedlings. This prevents the placed seedlings from slipping off, which can cause spots where there are no seedlings on the side edges of the seedling placement surface, or failure to feed the seedlings vertically, resulting in missing plants. It has become possible to work without causing planting defects, and in comparison, it has become cheaper in terms of structure and manufacturing time compared to conventional methods.

[0007]

[Example] Next, an example will be shown. As shown in FIG. 6, a claw drive body 5 rotatably equipped with two seedling planting claws 1, 1 and seedling pushers 2, 2 via a push-out drive case 3 or 4 is attached to a planting device body 6. In addition to being rotatably attached to the rear part, a seedling stand 9 is installed across the support 7 and the seedling stand guide 8 attached to the front of the planting device body 6, and a grounding float 10 is installed at the bottom of the planting device body 6. It is attached to form a seedling planting device. This seedling planting device constitutes a riding type rice transplanter by being connected to a self-propelled machine so as to be towed by it and to transmit rotational force for driving, and as shown in FIG. Potted seedlings 12 in which block seedlings 11 are arranged in a row in the vertical and horizontal directions by the action of a paper pot are placed on a seedling stand 9, and the seedlings are planted alternately in the same planting row using two seedling planting claws 1, 1. The detailed structure is as follows.

The extrusion drive cases 3 and 4 are rotated relative to the claw drive body 5 so that the seedling planting claw 1 rotates relative to the claw drive body 5 as the claw drive body 5 rotates. A gear mechanism (not shown) with a known configuration is installed inside the claw drive body 5, and by driving the claw drive body 5, the seedling planting claw 1 rotates around the rotation axis of the extrusion drive case 3 or 4. By configuring the claw driving body 5 to revolve around the rotation axis while moving, the seedling planting claw 1 passes up and down through the seedling supply port 13 formed by the seedling platform guide 8. It is driven to reciprocate and rotate, and performs a seedling planting movement in which one block of seedlings 11 is divided and taken out from the potted seedlings 12 on the seedling table 9, and then conveyed down to the field and planted. It is configured. The two seedling planting claws 1, 1 alternately take out and plant the block seedlings 11, and the planting device body 6 moves to the ground as the self-propelled machine moves, so that the two seedling planting claws 1 , 1 alternately sow seedlings in the same planting row.

The seedling stand 9 is mounted so as to be able to slide in the lateral direction of the machine by the guiding action of the seedling stand guide 8. A seedling transverse feed shaft 16, which is connected to the seedling platform 9 through connection rods 14 and 15 so as to slide together, is slidably inserted through the planting device body 6. A known operating mechanism configured to reciprocate and slide the seedling transverse feed shaft 16 by the action of a spiral groove (not shown) and a feeder (not shown) that enters the spiral groove is driven by a claw. By installing it inside the planting device body 6 so as to be driven in conjunction with the drive of the body 5, one block seedling 11 is placed on the lower end side of the potted seedling 12 in the lateral direction of the potted seedling 12. The seedling planting claws 1 are capable of taking out block seedlings 11 for one plant sequentially from one end side to the other end side in the parallel first row of seedling rows A. That is, the seedling lateral feed shaft 16 slides back and forth in conjunction with the seedling planting movement of the seedling planting claw 1 to horizontally transfer the seedling mounting table 9, so that the seedlings 12 in the mounting pots are transferred to the seedlings in the seedling planting claw 1. The machine moves back and forth in the lateral direction in conjunction with the planting movement, and the block seedlings 11 in the first seedling row A are sequentially brought to the seedling supply port 13 at the timing when the seedling planting claw 1 passes through the seedling supply port 13. It is designed so that

A plurality of vertical conveyance belts 17 for vertically conveying the seedlings 12 in the pots to the side of the seedling supply port 13 are arranged in parallel in the horizontal direction of the seedling table, and are rotated by a single rotary operation shaft 18. A one-way clutch 19 and a chain 20 are constructed so as to be able to move the seedlings and are attached to the back side of the seedling stand 9, and as shown in FIG.
A pair of left and right vertical feed operation arms 22, 22 interlocked via a fan-shaped chain sprocket 21 are swingably attached to the interlocking rod 15 so as to move laterally together with the seedling stand 9. When the horizontal feed stroke end is reached, one of the vertical feed operation arms 22 moves to a pair of left and right drive rotating bodies 23 attached to the planting device body 6.
, 23, it is possible to supply seedlings after the seedling planting claw 1 has taken out all the block seedlings 11 in the first row of seedling rows A. That is, when the seedling tray 9 reaches the end of the left and right traversal stroke,
One or the other vertical feed operating arm 22 swings by a set angle due to contact with one or the other driving rotating body 23, and the swinging force of the fan-shaped sprocket 21 accompanying this arm swing is applied to the rotation operating shaft 18. As a result, the vertical feed belt 17 is rotated by the set stroke, and until the seedling tray 9 reaches the end of the horizontal stroke, the first row of seedlings will be taken out next to the first row of seedlings row A. One block of seedlings 11 is placed on the upper end of the seedling tray in row A. The seedlings are fed so that the second row of seedlings, row B, which was lined up in the horizontal direction, becomes the next first row of seedlings. It is configured to be fed vertically toward the opening 13 side.

A friction brake 25 is applied to the rotary shaft 24 of the seedling vertical feeding belt 17 which is wound around the upper end of the seedling placing table, so that the seedling vertical feeding belt 1 is moved vertically when the seedlings 12 in the placement pots are fed vertically.
While the drive rotation of 7 is made possible by slipping, when the placed potted seedlings 12 are not vertically fed, the seedling vertical feeding belt 17 is fixed by a friction brake 25 so as not to rotate due to the downward force of the weight of the placed potted seedlings 12. It is configured to do so. That is, when the seedlings 12 in the placement pots are not being conveyed vertically, the vertical seedling conveying belt 17 is switched to a drive stopped state, and the conveying claws 26 are engaged with the bottom side of the seedlings 12 in the placement pots, thereby locking the seedlings 12 in the placement pots. It is configured to prevent the seedling supply port 13 from slipping down toward the seedling supply port 13 side.

As shown in FIGS. 1 and 3, the seedling tray 9 is constructed by a plurality of bent upright pieces of a sheet metal member connected to the resin seedling tray main body so as to form the lower end 9a of the seedling tray 9.
A plurality of anti-slip protrusions 2 as shown in FIG.
7 is formed on the seedling resting surface S of the seedling resting stand 9 so as to be locked to the bottom side of the seedlings 12 in the placing pot, and as shown in FIG. Even if the end C is located between the end of action of the vertical feed belt 17 and the seedling supply port 13 and a small number of seedlings are grown and the anti-slip support by the vertical feed belt 17 is lost, and as shown by the imaginary line in FIG. Second
To prevent seedlings 12 in placement pots from slipping to the side of seedling supply port 13 even if a seedling-absent spot is created on the lower side of row B and seedling support by seedling stopper part 8a of seedling platform guide 8 is lost. Care has been taken to make it possible. That is, the anti-slip protrusion 27 is located between the end of the operation of the vertical seedling feeding belt 17 and the seedling supply port 13 when viewed from the side of the seedling tray, and is located on the bottom side of the second row of seedling rows B of the seedling pots 12. It is arranged so that it is locked. Then, each of the anti-slip protrusions 27 is formed into a triangular shape when viewed from the side of the seedling stand, and the thickness T, height H, and base length W of the anti-slip protrusions 27 are set to T=approximately 1.
By setting the shape and number of anti-slip protrusions 27, such as forming the anti-slip protrusions 27 with a diameter of 2 mm, H = approximately 4 mm, and W = approximately 4 mm,
When the placed potted seedlings 12 are not vertically fed, the supporting force due to the locking of all the non-slip protrusions 27 becomes greater than the downward force of the own weight of the small amount of seedlings, and the anti-slip protrusions 27 move the placed potted seedlings 12. This makes it difficult for the seedlings to slip off, and when the seedlings 12 in the pots are vertically fed, the force of vertically feeding the seedlings due to the vertical feeding action of the vertical feeding belt 17 and the weight of a small amount of the seedlings is applied to all the anti-slip protrusions 27. The supporting force is larger than that due to locking, and the anti-slip protrusion 27 is configured to enable vertical movement of the seedling pot 12. Furthermore, since the base length W of the anti-slip protrusion 27 is larger than the thickness T, the anti-slip protrusion 27 has a locking effect that effectively prevents the placed pot seedling 12 from shifting in the width direction. It is configured to do so. As clearly shown in FIG. 3, the anti-slip protrusions 27 are distributed in such a manner that the density of the anti-slip protrusions 27 on both lateral ends of the seedling resting surface is greater than the density on the center side of the seedling resting surface in the lateral direction. That is, in view of the fact that without the anti-slip protrusion 27, the potted seedling 12 would slide down from the side edge, the anti-slip locking effect on the side edge side is greater than the anti-slip locking effect on the lateral center side. In this way, consideration is given to effectively preventing slipping off while preventing the overall vertical feed resistance from becoming excessive.

The present invention can also be applied to a seedling planting device that uses mat-shaped seedlings instead of potted seedlings 12. Therefore, the potted seedlings 12 are simply referred to as placed seedlings 12, and the block seedlings 11 are referred to as single seedlings 11. Instead of the vertical seedling feeding belt 17, a star wheel for vertical seedling feeding may be used.
These are collectively referred to as the vertical seedling feeder 17.

[0014]Although reference numerals are written in the claims for convenience of comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of the drawing]

[Figure 1] Cross-sectional view of the anti-slip protrusion portion of the seedling stand

[Figure 2] Side view of seedling vertical feed drive structure

[Figure 3] Plan view of the lower end of the seedling stand

[Figure 4] Perspective view of anti-slip protrusion

[Figure 5] Perspective view of a part of a potted seedling

[Figure 6] Side view of the entire seedling planting device

[Explanation of symbols]

1 Seedling planting nail 9 Seedling stand 11 One seedling 12 Placed seedlings 13 Seedling supply port 17 Seedling vertical feeder 27 Anti-slip protrusion A 1st row row of seedlings B Second example row of seedlings S Seedling surface

Claims (1)

[Claims] 1. A seedling planting claw (1) is provided so as to be freely drivable so as to be able to reciprocate up and down. The seedling mounting table (9) is moved to the seedling planting claw (1) so that the seedlings (11) can be divided and taken out.
) is provided so as to be able to slide back and forth in the lateral direction of the machine in conjunction with the seedling planting movement of the seedlings (12).
) to feed the above-mentioned seedlings (12) into the seedling supply port (
13) Drive state of vertical feeding to the side and the above-mentioned placed seedlings (12)
The rear surface of the seedling stand (9) can be freely switched to a drive stop state in which the placed seedling (12) is prevented from slipping and descending toward the seedling supply port (13) by engaging the bottom side of the seedling stand (9). The seedling planting device is provided on the side of the seedling planting device, and includes a plurality of anti-slip protrusions (27) that lock onto the bottom side of the placed seedlings (12) and are dispersed laterally on the seedling platform. (17) when the drive is stopped, the seedling supply port (13) of the placed seedling (12)
) side, and prevents the seedling vertical feeder (1) from slipping downward.
In the driving state of 7), the seedlings (12) are allowed to be moved by the vertical feeder (17), and the seedlings are planted on the lower end side of the placed seedlings (12). Claw (1)
One seedling to be taken out (11) is next to the seedling planting claw (1) in the first row of seedling rows (A) in which the seedlings are placed in parallel in the horizontal direction. The seedlings (11) are arranged to act on the seedlings (12) in the second row of seedlings (B) in which the seedlings are placed in parallel in the lateral direction, and
), the anti-slip protrusion is provided at a location located between the end of action of the vertical seedling feeder (17) and the seedling supply port (13) when viewed from the side of the seedling loading surface (S) of the seedling loading surface (S). (27)
A seedling planting device in which the arrangement density at both lateral ends of the seedling placement surface is greater than the arrangement density at the center side in the lateral direction of the seedling placement surface.