JP3488097B2 - Adjusting structure of vertical feeder of 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 vertical feeding device for feeding seedlings placed on a seedling stand to the lower side by a seedling feeding belt arranged vertically along the seedling placing surface of the seedling stand. In a rice transplanter provided, the present invention relates to a vertical feeding device adjusting structure for changing a seedling feeding amount of a vertical feeding device.

[0002]

2. Description of the Related Art A rice transplanter is equipped with a seedling stand on which seedlings are placed and laterally reciprocate laterally. The planting mechanism passes under the seedling stand to take out the seedlings and plant them on the rice field. When the seedling placing table reaches the stroke end of the reciprocating lateral movement, the seedling placed on the seedling placing table is sent to the lower side of the seedling placing table by the vertical feeding device. Generally, such a rice transplanter is configured so that the amount of seedlings taken by the planting mechanism can be changed. Therefore, when the amount of seedlings taken by the planting mechanism is changed, the amount of seedlings fed by the vertical feeder is adjusted accordingly. It is also necessary to change so that seedlings placed on the seedling stand can be sent to the lower side of the seedling stand by the vertical feeder without excess or deficiency regardless of the change in the seedling removal amount of the planting mechanism. is there.

An example of a structure for changing the seedling feeding amount of the vertical feeding device as described above is disclosed in Japanese Utility Model Publication No. 4-36579. In this structure, the seedling stand (second part of the above publication)
The position of a support member (25 in FIG. 2 of the above publication) for supporting the lower part of 3) in the figure so as to reciprocate laterally in the left-right direction is changed to the up-down direction so that the planting mechanism starts from the lower part of the seedling stand Seedling amount changing unit for changing the amount of seedlings taken out by
27a, 27c, 28) in the figure are provided. The vertical feeding device is configured to change the seedling feeding amount,
The seedling removal amount changing unit and the vertical feeding device are linked by a wire (inner wire). As a result, if the support member of the seedling stand is moved downward by the seedling removal amount changing unit and the seedling removal amount of the planting mechanism is changed to multiple sides, the seedling feed amount of the vertical feeder is automatically adjusted by the wire (inner wire). When the seedling removal amount changing unit moves the support member of the seedling stand upward to change the seedling removal amount of the planting mechanism to the small side,
The wire (inner wire) automatically changes the seedling feed amount of the vertical feeder to the small side.

[0004]

[Problems to be Solved by the Invention] In the case of a rice transplanter, a plurality of seedling support surfaces corresponding to a plurality of planting provisions are provided on the seedling support table, and the vertical feeder for each seedling support surface feeds seedlings. When the slip occurs, the feeding of seedlings on the vertical feeding device of each seedling surface varies. If the seedlings fall below the set amount on the seedling surface, it is necessary to temporarily stop the rice transplanter to replenish the seedling surface that has fallen below the set amount with seedlings. If there is variation in the feeding of seedlings in the vertical feeder of the surface, the rice transplanter will be temporarily stopped every time the seedlings on the surface of one seedling become less than the set amount, and the rice transplanter will be supplied to replenish the seedlings. The work efficiency is reduced due to the increase in the number of times that the work is temporarily stopped.

Thus, as described above, the vertical feeding device feeds the seedlings placed on the seedling stand to the lower side by the seedling feeding belts arranged vertically along the seedling placing surface of the seedling placing table. By making the vertical seedling feeding belt contact the seedling placed on the seedling stand over a long range, it is possible to feed the seedling to the lower side of the seedling stand while suppressing slippage. . In this way, by constructing the vertical feeding device with the seedling feeding belt, the seedlings on each seedling surface can be reduced to less than the set amount at the same time as much as possible, and seedlings on multiple seedling surfaces can be suspended when the rice transplanter is temporarily stopped. It can be expected that the number of times the rice transplanter is temporarily stopped will be reduced by making it possible to replenish the rice. In recent years, the seedling feeding belt of the vertical feeding device tends to be further elongated so that the seedlings can be fed to the lower side of the seedling placing table while further suppressing slip.

In the state as described above, [prior art]
According to the configuration of Japanese Utility Model Publication No. 4-36579,
Seedling amount change unit (Seedling amount) and vertical feeding device (Seedling feeding amount)
When the inner wires of the wires are linked so as to be linked to each other, the end portion of the outer wire of the wire (3 in FIG.
4) is fixed horizontally. Therefore, rainwater can enter from the end of the outer wire, and once it enters, it is difficult to come out, and when it is used for rice transplanters etc. with a limited mobile season and a long idle storage period, Rust often occurred between the outer wire and the inner wire. Therefore, the relative movement between the outer wire and the inner wire is not smoothly performed, and the deterioration of the function of the wire is accelerated. On the other hand, the position of a support member (25 in FIG. 2 of the publication) for supporting the lower part of the seedling stand (3 in FIG. 2 of the publication) so as to reciprocate laterally in the horizontal direction is changed to the vertical direction. hand,
In the seedling removal amount changing unit for changing the seedling removal amount taken out by the planting mechanism from the lower part of the seedling stand, the pin extended from the support member to the side opposite to the seedling mounting surface (second part of the publication). A seedling removal amount adjusting tool (27 in FIG. 2 of the above publication) is connected to 26) in the figure through a long hole, and the pin is rockably driven by the seedling taking amount adjusting tool to support member ( The apron) is configured to move up and down. The seedling removal amount adjusting tool is a fulcrum of rotation in a forward and backward direction of the body (2 in FIG. 2 of the above publication).
8) is swingably supported by a pin fitting portion (26 in FIG. 2 of the publication) in which the pin (26 in FIG. 2 of the publication) of the tool for adjusting the amount of seedlings is fitted. 27c) and the pin (26 in FIG. 2 of the publication) are combined as follows.
It is provided at a plurality of positions in the lateral direction along the support member, and each pin fitting portion is linked by a linking member (33 in FIG. 2 of the above publication), and an operating portion is integrated with a specific pin fitting portion. The seedling removal amount adjusting tool (27 in FIG. 2 of the above-mentioned publication) is attached to the device so that the seedling removal amount adjusting operation can be performed. With the above configuration, the seedling removal amount adjusting tool is attached so as to be swingable around the longitudinal axis of the machine body,
There was a constraint that the attachment site of the seedling removal amount adjusting tool had to be arranged in the vicinity of the pin and the pin fitting portion fitted to the pin. In addition, it is necessary to dispose the pin fitting portion and the rotation fulcrum that supports the pin fitting portion at a plurality of positions along the support member, and a linking rod that links each pin fitting portion is required. Therefore, the arrangement configuration is complicated and complicated.

Further, in the state as described above, with the construction of Japanese Utility Model Publication No. 4-36579 described in [Prior Art], the seedling-picking amount changing section (seedling-picking amount) and the vertical feeding device (seedling-feeding amount). When the inner wire of the wire is linked so as to be linked with the wire, the end of the outer wire of the wire (3 in FIG.
4) is attached to a fixed portion (35 in FIG. 2 of the above publication) above the upper end of the seedling feeding belt. As a result, the length of the inner wire protruding from the end of the outer wire of the wire is long on the side connected to the vertical feeding device. As mentioned above, if the length of the inner wire of the wire is long,
As a result, the total length of the wire also becomes long. In this case, since the inner wire of the wire is relatively easy to stretch, when the inner wire of the wire stretches, the total amount of elongation of the inner wire of the wire becomes large, and the seedling feed amount of the vertical feeder is increased. The setting accuracy may decrease. The present invention, in the rice transplanter, when the vertical feeding device is configured by the seedling feeding belt so that the seedlings can be fed to the lower side of the seedling placing stand while suppressing slip,
Configured to automatically change the seedling feed amount of the vertical feeding device according to the change of the seedling removal amount of the planting mechanism, and configured to automatically change the seedling feeding amount of the vertical feeding device. In this case, it is possible to prevent the setting accuracy of the seed feeding amount of the vertical feeding device from being lowered and to make it possible to relatively freely select the operation tool mounting position for adjusting the seedling taking amount. I am trying.

[0008]

The features of the present invention are as follows.
In the vertical feeding device adjustment structure of such rice transplanter,
To configure. [1] In front of the seedling stand that puts the seedlings and moves back and forth in the left and right direction.
Take out the seedlings from the bottom of the seedling stand and plant them in the rice field.
Up and down direction along the planting mechanism and the seedling surface of the seedling stand
Placed on the seedling stand by the seedling feeding belt placed in
Equipped with a vertical feeder that sends the seedlings to the lower side of the seedling stand.
By the way, the stroke end of the reciprocating lateral movement of the seedling stand
Then, the driven member provided in the lower portion of the vertical feeding device,
The vertical feeding device is driven by the driving member on the fixed side.
It is configured to operate and the lower part of the seedling stand is
In the vicinity of a support member that supports reciprocating lateral movement in the left-right direction
At the side opposite to the seedling surface of the seedling stand, rotate the seedling.
Flexible support shafts are arranged in the left-right direction and
An operating tool for rotating the shaft is provided, and the seedling is moved from the support shaft.
The support member is supported on the support arm extended to the side of the platform.
Hold it and rotate the support shaft with the operation tool.
By changing the position of the support member in the vertical direction.
Seedlings taken out by the planting mechanism from the bottom of the seedling stand
Equipped with a seedling removal amount changing unit that changes the removal amount,
Connect one end of the wire to the seedling removal amount changing section.
And the other end of the inner wire of the wireCoordination
A member for holding the driven member in the standby position.
The linking member to the connection member,
Place the linking member outside the tip rotation trajectory of the drive member
And the end of the wire that is connected to the portion for changing the seedling removal amount
Both the part and the end portion on the connection side with respect to the driven member,
Position the wire from the upper side to the lower side, and
Turn both ends of the tar wire downward with both lower ends open.
The wire should be placed in a
If the amount of seedlings taken by the planting mechanism decreases,
The amount of seedlings fed by the vertical feeder is reduced, and the planting
When the amount of seedlings taken by the mechanism increases, the amount of seedlings fed by the vertical feeding device
The seedling removal amount changing unit and the vertical feeding device so that
And are linked. [2] Connect the other end of the outer wire of the wire to the vertical feed device.
Upper side of the operating locus of the driven member and stationary side driving member
The seedlings below the upper edge of the seedling feeding belt.
It is attached to the fixed part of the table.

[3] A seedling stand on which seedlings are placed and laterally reciprocates laterally, a planting mechanism for taking out the seedlings from the lower part of the seedling stand and planting them on the rice field, and With a vertical feeding device that feeds the seedlings placed on the seedling placing table to the lower side of the seedling placing table by the seedling feeding belts arranged in the up-down direction, at the stroke end of the reciprocating lateral movement of the seedling placing table, The driven member provided in the lower portion of the vertical feeding device is configured to be driven by the driving member on the fixed side so that the vertical feeding device operates.
Near the support member that supports the lower part of the seedling stand so that it can reciprocate horizontally in the left-right direction, a support shaft that can be rotated is placed in the left-right direction on the opposite side of the seedling stand from the seedling surface. The support member is supported by the support arm extending from the shaft to the seedling stand side, and the position of the support member is changed in the vertical direction by rotating the support shaft to plant the seedling from the lower part of the seedling stand. The attachment mechanism allows the amount of seedling to be taken out to be changed, the arm extends from the support shaft to the side opposite to the seedling stand, and one end of the inner wire of the wire is connected to the arm to connect the inner wire. The other end side of the wire is linked to the driven member of the vertical feeding device, and the other end side of the outer wire of the wire is above the operation locus of the driven member of the vertical feeding device and the fixed side driving member and the seedling feeding belt. Attach to the fixed part of the seedling stand below the top of If the amount of seedlings taken by the planting mechanism decreases, the amount of seedlings fed by the vertical feeder decreases, and if the amount of seedlings taken by the planting mechanism increases, the amount of seedlings fed by the vertical feeder increases. It is linked to the device.

[0010]

[I] [I] In the rice transplanter, the seedlings are placed on the seedlings by placing the seedlings and reciprocating laterally in the left-right direction, and by using the seedling feeding belts arranged vertically along the seedling placement surface of the seedlings stand. When equipped with a vertical feeding device that feeds the seedlings placed on the seedling stand to the lower side of the seedling placing table, the driven member provided at the bottom of the vertical feeding device at the stroke end of the reciprocating lateral movement of the seedling placing table. In many cases, the vertical feeding device is operated by being driven by the fixed-side driving member. On the other hand, in the vicinity of a support member that supports the lower part of the seedling stand so that it can reciprocate laterally in the left-right direction, on the side opposite to the seedling-mounting surface of the seedling stand, a support shaft that can be rotated in the left-right direction An operating tool for arranging and rotating the supporting shaft is provided, and the supporting member is supported by a supporting arm extending from the supporting shaft to the seedling stand side, and the supporting shaft is supported by the operating tool. There is provided a seedling removal amount changing unit that changes the seedling removal amount taken out by the planting mechanism from the lower portion of the seedling placing table by rotating the support member to change the position of the support member in the vertical direction. As a result, the support arm extending from the support shaft to the seedling stand side using the support shaft arranged in the left-right direction can be extended from any portion in the axial direction of the support shaft. The supporting arm can be arranged at a position in consideration of the position of the center of gravity of the supporting member or the like lifted by the arm, and the lifting operation can be easily performed. In addition, since the operating tool can be installed at any position in the axial direction of the support shaft, the operating tool can be installed at any position without any restrictions on installation and can be freely arranged. In such a rice transplanter,
According to the features of claims 1 and 2, the seedling removal amount changing unit (the seedlings of the planting mechanism is changed so that the seedling feeding amount of the vertical feeder is automatically changed according to the change of the seedling removal amount of the planting mechanism. When linking the support shaft for changing the take-up amount) and the driven member of the vertical feeding device with a wire , connect the other end side of the inner wire of the wire to the linking member, and move the driven member to the standby position.
When the linking member is connected to the pin member to be held,
In addition, the linking member is placed outside the tip rotation trajectory of the drive member.
It is placed on the side . With this configuration, the wire
Inner Waiya is communicating exposed from the outer wire the other end
Due to the existence of the engaging member, it will be separated from the driven member.
Therefore, the inner wire and the driven member may interfere with each other.
And less. The driven member is driven and shaken by the driving member.
When exposed, the exposed length of the inner wire is suppressed.
The inner wire itself does not easily bend
There are few crossings. Then, both of the connection side end portion of the wire with respect to the seedling removal amount changing portion and the connection side end portion with respect to the driven member are arranged in a posture facing from the upper side to the lower side of the outer wire of the wire. Both ends are provided in a downward posture in which both lower ends are open. As a result, rainwater or the like rarely enters the inside of the outer end portion, and even if it enters, it can be easily discharged. According to the features of claim 1 or 2, since the middle portion of the wire is bent and inverted, when the seedling stand and the vertical feeder reciprocate laterally in the above-mentioned state, the middle portion of the wire is moved. While the wire bends and extends, the other end of the wire connected to the vertical feeding device is in a state of reciprocating laterally moving in the left-right direction together with the vertical feeding device. This allows
The horizontal reciprocating lateral movement of the seedling stand and the vertical feeder is absorbed in the middle part of the wire, and the lateral reciprocating lateral movement of the seedling placing table and the vertical feeder causes an unreasonable force on the wire. It doesn't hang. In this way, if the wire can be arranged so that the middle part thereof is bent and inverted like an inverted U shape or a mountain shape so as to be substantially along the seedling placing table as a whole, the left and right sides of the seedling placing table and the vertical feeding device can be arranged. By the reciprocating lateral movement in the direction, the range of movement of the middle part of the wire becomes small along the seedling stand, so the middle part of the wire is moved by the lateral reciprocating lateral movement of the seedling stand and the vertical feeder. The number of situations in which the device is caught by another unit arranged near the seedling removal amount changing unit or the vertical feeding device is reduced.

[II] The seedling removal amount changing section (the seedling removal amount of the planting mechanism is changed so that the seedling feeding amount of the vertical feeder is automatically changed in accordance with the change of the seedling removal amount of the planting mechanism. When connecting the driven shaft of the vertical feed device and the driven member of the vertical feed device by a wire, one end side of the inner wire of the wire is connected to the seedling-picking-amount changing unit (the supporting shaft that changes the seedling-picking amount of the planting mechanism), The other end side of the inner wire of the wire is linked to the driven member of the vertical feeding device, and the other end side of the outer wire of the wire is attached to the fixing part of the seedling stand below the upper end of the seedling feeding belt. There is.

Thus, according to the features of claims 2 and 3, on the side of the vertical feeding device, the other end side of the outer wire of the wire and the other end side of the inner wire of the wire are linked (driven by the vertical feed mechanism). Member), the length of the inner wire protruding from the other end of the outer wire of the wire is shortened, and as a result, the overall length of the wire is shortened accordingly. You can As described above, according to the features of claims 2 and 3, the inner wire of the wire is stretched by making the length of the inner wire of the wire that is relatively easy to stretch short and making the entire length of the wire short. In this case, the total elongation of the inner wire of the wire can be suppressed to a small amount, so the accuracy of setting the seedling feed amount of the vertical feeder, which is changed with the change of the seedling removal amount of the planting mechanism, can be improved. , Can be kept good.

[III] As described in the above item [II], the other end side of the outer wire of the wire is attached to the fixing portion of the seedling stand below the upper end of the seedling feeding belt to fix the outer wire of the wire. According to the features of claims 2 and 3, when the other end side is brought close to the portion (the driven member of the vertical feed mechanism) to which the other end side of the inner wire of the wire is linked, the fixing portion (wire (The other end side of the outer wire) is arranged above the operation loci of the driven member and the fixed driving member of the vertical feeding device and below the upper end of the seedling feeding belt.

As described above, according to the features of claims 2 and 3, the fixed portion of the seedling placing table (the other end of the outer wire of the wire is located above the operating loci of the driven member and the fixed side driving member of the vertical feeding device. Side), the fixed portion of the seedling stand (the outer wire of the wire) is fixed even if the driven member of the vertical feeding device is driven by the fixed-side driving member at the stroke end of the reciprocating lateral movement of the seedling stand. The other end) does not interfere with the driven member and the fixed driving member of the vertical feeding device.

[IV] The seedling removal amount changing section (support shaft for changing the seedling removal amount of the planting mechanism) described in [II] above is generally in a position-fixed state with respect to the seedling planting device. On the other hand, the vertical feeding device is provided on the seedling stand that moves laterally back and forth, and moves laterally back and forth together with the seedling stand. As a result, the seedling picking amount changing unit (the support shaft for changing the seedling picking amount of the planting mechanism is changed so that the seedling feeding amount of the vertical feeding device is automatically changed according to the change of the seedling taking amount of the planting mechanism. ) And the driven member of the vertical feed device are linked by a wire, the inner wire protruding from the other end side of the outer wire of the wire is also at the other end side of the wire linked to the driven member of the vertical feed device. It reciprocates laterally in the left-right direction together with the vertical feed device.

According to the features of claims 2 and 3, the preceding paragraph [I
As described in I], when the seedling removal amount changing unit (support shaft for changing the seedling removal amount of the planting mechanism) and the vertical feeding device are linked by a wire, they are linked to a driven member of the vertical feeding device. On the other end side of the wire, the inner wire protruding from the other end side of the outer wire of the wire can be made short.

Thus, according to the features of claims 2 and 3, when the other end of the wire linked to the driven member of the vertical feed device reciprocates laterally in the left-right direction together with the vertical feed device, the outer wire is moved. Since the space required for the inner wire that comes out from the other end of the wire to move is small, the inner wire that comes out from the other end of the outer wire of the wire will be slightly separated from the vertical feeder. Even if it is arranged, there is a situation where the inner wire that comes out from the other end of the outer wire of the wire gets caught in the seedling-picking-amount changing unit or another device arranged near the vertical feeding device. There are few things.

[V] When constructing a seedling removal amount changing unit in a rice transplanter, as shown in, for example, Utility Model Registration No. 2505341, the lower part of the seedling stand is supported so as to be reciprocally movable laterally in the left-right direction. In the vicinity of the support member (15 in FIG. 3 of the above-mentioned registration publication), a support shaft (43 in FIG. 3 of the above-mentioned registration publication) that is freely rotatable is provided on the opposite side of the seedling stand from the seedling surface. Direction, and the supporting member is supported by a supporting arm (42 in FIG. 3 of the above-mentioned registered publication) extended from the supporting shaft to the seedling stand side, and the supporting shaft is rotated to position the supporting member. In many cases, the amount of seedlings taken out by the planting mechanism from the lower part of the seedling stand is changed by changing the vertical direction.

In this case, the above-mentioned utility model registration No. 2505
In the structure of No. 341, the linking rod (44 in FIG. 3 of the above-mentioned registered publication) is connected to the support arm that extends from the support shaft to the seedling stand side and supports the supporting member of the seedling stand. By connecting the linking rod to the vertical feeding device, the seedling feeding amount of the vertical feeding device is automatically changed according to the change of the seedling taking amount of the planting mechanism. In the rice transplanter, in the above-mentioned configuration, the support shaft and the support member of the seedling stand are arranged close to each other, and the length of the support arm is set to be short. It is not easy to connect the linking rod to the support arm as described above while avoiding the interference of 1), which makes the shape of the linking rod complicated.

[VI] As described in the above item [V], in the vicinity of a support member that supports the lower part of the seedling stand so that it can reciprocate laterally in the left-right direction,
When a support shaft that can be turned freely is arranged in the left-right direction on the side opposite to the seedling stand surface of the seedling stand, and the support member is supported by a support arm extending from the support shaft to the seedling stand side. According to the feature of claim 3, the arm extends from the support shaft to the side opposite to the seedling stand, one end of the inner wire of the wire is connected to the arm, and the other end of the inner wire of the wire is It is linked to a driven member of the vertical feeding device. As a result, when the support shaft is rotated to change the position of the support member of the seedling placing table up and down by the support arm and the seedling removal amount of the planting mechanism is changed to the multi-side and the small-side, along with this The inner wire of the wire is pushed and pulled to change the seedling feeding amount of the vertical feeding device to the large side and the small side.

[0021] As in the structure of Utility Model Registration No. 2505341 described above, the support arm extends from the support shaft to the seedling stand side, and the support arm supports the support member of the seedling stand. In the feature of item 3, the arm portion extends from the support shaft to the side opposite to the seedling stand (the side opposite to the support arm), and the arm portion of the support shaft and the vertical feed device are linked by a wire. Thereby, even if the support shaft and the support member of the seedling stand are arranged close to each other in the rice transplanter and the length of the support arm is set to be short, as in the feature of claim 3,
By connecting the one end side of the inner wire of the wire to the arm portion extending from the support shaft to the side opposite to the support arm and the seedling stand, the support shaft and the support member for the seedling stand are provided. Since one end of the inner wire of the wire can be connected to the arm portion of the support shaft while avoiding interference easily, it is not necessary to bend the wire in a complicated manner. Further, since the wire can change its direction more easily than the connecting rod as described in the above item [V], even if another device is arranged between the support shaft and the vertical feed device, the wire can be changed. The wires can be placed while avoiding them easily.

[0022]

According to the features of claim 1, in the structure for adjusting the vertical feeding device of the rice transplanter, when the changing unit of the seedling taking amount and the vertical feeding device are linked by the wire, the seedling stand and the vertical feeding device are arranged in the left-right direction. Reciprocating lateral movement is absorbed by the middle part of the wire,
Since it is possible to prevent the wire from being subjected to an excessive force, damage to the wire can be prevented, and the durability of the adjusting structure of the vertical feeding device can be improved. Further, it is possible to simplify the linking structure between the seedling removal amount changing unit and the vertical feeding device, and it is difficult to be restricted by the mutual arrangement position and the operating direction of the seedling removal amount changing unit and the vertical feeding device, The structure is simple and the degree of freedom in design is high. Furthermore, both the connection side end to the seedling removal amount changing unit of the wire and the connection side end to the vertical feeding device are arranged in a posture facing from the upper side to the lower side, and both ends of the outer wire are Since both are provided in a downward posture with the lower end side open, it is difficult for rainwater and muddy water on the seedling stand side to enter the outer wire, and even if it enters once , it easily exits. Therefore, in the case of a device such as a rice transplanter that is used for a limited season and left for a long period of time, it is possible to avoid the occurrence of rust due to a large amount of rainwater remaining in the outer wire. It is effective in terms. In addition, since the installation position of the support arm and the operating tool can be set by using the support shaft arranged in the left-right direction, there is no restriction on the installation, and the arrangement can be freely arranged. Insert the inner wire on the other end of the wire through the linking member.
Since it is linked to the pin member,
-Avoids interference with the wire and is stable for vertical feed devices, etc.
The action can be performed .

According to the first to third aspects of the present invention, in the vertical feeding device adjusting structure of the rice transplanter equipped with the vertical feeding device constituted by the seedling feeding belt, the vertical feeding device is changed according to the change of the seedling taking amount of the planting mechanism. When the seedling removal amount changing part (support shaft that changes the seedling removal amount of the planting mechanism) and the driven member of the vertical feeding device are linked by wire so that the seedling feeding amount of The length of the inner wire of the wire that is easy to expand is shortened, and the total amount of expansion of the inner wire can be suppressed to a small value. It becomes possible to accurately set the seedling feed amount of the vertical feed device,
The vertical feeding device allowed the seedlings to be stably fed to the lower side of the seedling stand. Thus, according to the features of claims 1 to 3, it is possible to reduce the seedlings on the seedling surface of each seedling stand at the same time as much as possible below the set amount, regardless of the change in the seedling removal amount of the planting mechanism. It is possible to supply seedlings to as many seedlings as possible when the rice transplanter is temporarily stopped, so the number of times the rice transplanter is temporarily stopped can be reduced and the work efficiency of the rice transplanter is improved. I was able to do it.

According to the features of claims 2 and 3, the fixed portion (the other end side of the outer wire of the wire) of the seedling placing table is located above the operating loci of the driven member and the fixed driving member of the vertical feeding device. In addition, by arranging it below the upper end of the seedling feeding belt, even if the driven member of the vertical feeding device is driven by the fixed side driving member at the stroke end of the reciprocating lateral movement of the seedling placing base, The fixed portion (the other end side of the outer wire of the wire) does not interfere with the driven member of the vertical feeding device and the fixed side driving member, and the vertical feeding device operates stably.

According to the features of claims 2 and 3, at the other end side of the wire linked to the vertical feeding device, the length of the inner wire protruding from the other end side of the outer wire of the wire is made short. When the other end of the wire that is linked to the vertical feeder moves back and forth in the left-right direction together with the vertical feeder, the inner wire protruding from the other end of the outer wire of the wire is Since the number of situations in which the seedling stand is caught by another device arranged near the quantity changing unit or the vertical feeding device is reduced, the left and right reciprocating lateral movement of the seedling stand can be performed smoothly.

According to the features of claims 2 and 3, the inner wire of the wire is attached to the arm extending from the support shaft for changing the seedling removal amount of the planting mechanism to the side opposite to the support arm and the seedling stand. By connecting one end side, it is possible to easily avoid interference with the support shaft or the support member of the seedling stand,
Due to the fact that it is not necessary to bend the wire intricately, and even if other devices are arranged between the support shaft and the vertical feeding device, it is possible to arrange the wire while avoiding these easily. It became possible to smoothly push and pull the wire while avoiding the complication of the structure, and it was possible to stabilize the operation of the adjusting structure of the vertical feeding device.

[0027]

Embodiments will be described below with reference to the drawings. Figure 1
And FIG. 4 shows a seedling planting device. This seedling planting device is provided with a seedling stand 1 on which seedlings are placed and laterally reciprocate laterally with a constant stroke, and six planting mechanisms 2 for taking out seedlings from the lower part of the seedling stand 1 and planting them on the rice field. It is configured to include three leveling floats 3 and the like, and is connected to a rear portion of a riding type traveling machine body (not shown) via a link mechanism 4 so as to be able to move up and down and roll around the longitudinal axis Y. There is.

As shown in FIGS. 1 and 4, the link mechanism 4
A feed case 6 is attached to a pivotal boss portion 5 formed on the rear link 4a so as to be rotatable around the front-rear axis Y, and a square pipe-shaped main frame 7 is tightened with a bolt below the feed case 6. It is connected. The main frame 7 is extended in the lateral direction, and is formed by welding and connecting a pair of sheet metal members that are bent and formed in a U-shaped cross section at their mating surface portions. Power is transmitted from the traveling machine body side to the feed case 6 via the power take-off shaft 8, and the transmitted power is fed to the seedling stand 1 in the feed case 6 by a lateral feed drive mechanism (not shown) and with a plant. It is configured to be transmitted to the mechanism 2.

As shown in FIGS. 1 and 4, three planting cases 9 are provided on the rear surface side of the main frame 7 at predetermined intervals.
However, they are connected to each other by bolts in a cantilever manner toward the rear side, and the planting mechanism 2 is provided on both left and right sides of the rear part of the planting case 9 to form a six-row planting type. The rotating case 11 is rotationally driven via the chain transmission mechanism 10 installed in the planting case 9, and the rotating case 11 is rotated by a cam mechanism (not shown) provided in the rotating case 11 as the rotating case 11 rotates. Planting claws 1 attached to both ends of the
The planting mechanism 2 is configured so that the tip of 2 moves up and down while drawing a substantially elliptical locus. Power is transmitted from the feed case 6 to the planting mechanism 2 via a lateral drive shaft 13 arranged outside the rear side of the main frame 7.

As shown in FIGS. 2 and 1, a sliding rail 14 for supporting the lower part of the seedling placing table 1 so as to be able to reciprocate laterally in the left-right direction is moved up and down by a seedling removal amount adjusting lever (an example of an operating tool) 15. Sliding operation in the direction to planting mechanism 2 (planting nail 1
The amount of seedlings taken according to 2) can be changed in multiple stages. A seedling-picking-amount adjusting lever 15 is connected to a horizontal shaft 16 that is rotatably supported in the left-right direction with respect to the planting case 9 in the vicinity of the sliding rail 14, and a support arm 17 that engages with the sliding rail 14. Is extended from the horizontal axis 16 to the seedling placing table 1 side, and by operating the seedling removing amount adjusting lever 15 up and down, the overall positions of the slide rail 14 and the seedling placing table 1 are changed in the vertical direction. It is configured to be able to.

In the seedling placing table 1, a vertical feeding device 18 for feeding the seedlings to the planting mechanism 2 at a stroke end of reciprocating lateral movement is provided for each planting row. As shown in FIG. 2, the vertical feed device 18 includes a pair of upper and lower pulleys 1.
Endless vertical feed belt 1 with protrusions 8a and 18b
8c is wound and is configured to operate by driving and rotating the lower pulley 18b. A drive-side pulley 18b is externally fitted to a hexagonal drive shaft 20 extending over substantially the entire width of the seedling stand 1 so that torque can be transmitted, and a one-way rotating clutch (not shown) of a ball clutch type is provided from the drive shaft 20. ), And a drive arm 22 that is urged to rotate downward is provided. At the stroke end of the reciprocating lateral movement of the seedling placing table 1, the rotary cam 24 of the rotary shaft 23 projecting laterally outward from the feed case 6 contacts the drive arm 22 and is rotationally driven by a predetermined amount to perform vertical feeding. The belt 18c is configured to be rotationally driven by a predetermined amount.

As shown in FIGS. 2 and 3, the drive arm 2
A regulating pin 25 that contacts the position 2 to set the standby position of the drive arm 22 is provided so that the position can be adjusted in the rotation direction of the drive arm 22, and the seed feeding amount of the vertical feed belt 18c by the rotating cam 24 can be changed. Is configured. The regulation pin 25 is inserted and supported and is prevented from coming off over a pair of left and right support members 26 fitted onto the drive shaft 20 on both left and right sides of the drive arm 22. In a state where the drive arm 22 is straddled from above, the U-shaped linking member 27 in front view is inserted into and engaged with both left and right ends of the regulation pin 25, and the regulation pin 25 is engaged with the coil spring 28 hooked on both left and right sides.
Is pulled downward and urged. With such an insertion engagement, a troublesome production process such as welding of a cantilever-shaped member is not necessary, and the structure has a structure that does not easily cause squeezing and rattling.

As shown in FIGS. 2 and 3, one end of the inner wire 29a of the wire 29 is connected to the arm 30 integrally formed on the horizontal shaft 16 on the side opposite to the seedling stand 1.
The other end of the inner wire 29a of the wire 29 is fastened with a screw and connected to the laterally extending portion 27a at the upper portion of the linking member 27. As shown in FIG. 2, the outer wire 29b other than the outer wire 29b of the wire 29 is attached to the fixing portion 31 of the seedling placing table 1 located on the upper side of the operation loci of the drive arm 22 and the rotating cam 24 and below the upper pulley 18a. The end side is attached.

With the above-described structure, the seedling-picking amount adjusting lever 15 is operated upward in FIGS.
When the amount of seedlings is changed to the multiple side, the inner wire 29a of the wire 29 is returned to the linking member 27 side, and the standby position of the drive arm 22 set by the regulation pin 25 is changed to the lower side. As a result, the stroke when the drive arm 22 is rotationally driven from the standby position to the upper feed position by the rotary cam 24 is increased, and the seedling feed amount of the vertical feed belt 8c is increased.

On the contrary, when the seedling taking amount adjusting lever 15 is operated downward to change the seedling taking amount of the planting mechanism 2 to the smaller side, the inner wire 29a of the wire 29 causes the seedling taking amount adjusting lever 1 to move.
By pulling to the 5 side, the standby position of the drive arm 22 set by the regulation pin 25 is changed to the upper side. This reduces the stroke when the drive arm 22 is rotationally driven from the standby position to the upper feed position by the rotary cam 24, and the seedling feed amount of the vertical feed belt 8c is reduced.

In this way, when the seedling take-up amount of the planting mechanism 2 is changed to the multi-side while allowing the lateral movement of the seedling placing base 1 in the left-right direction, the seed feeding amount of the vertical feeding belt 8c is automatically changed. When it is changed to the large side and the seedling removal amount of the planting mechanism 2 is changed to the small side, the seedling feeding amount of the vertical feed belt 8c is automatically changed to the small side. Therefore, in this structure, the seedling taking amount adjusting lever 15 is also used as the seedling feeding amount adjusting lever of the vertical feed belt 8c. As described above, instead of the structure in which the seed feeding amount adjusting lever of the vertical feeding belt 8c and the seedling removing amount adjusting lever 15 are used in common, an adjustment lever dedicated to changing the seed feeding amount of the vertical feeding belt 8c is provided. Good.

It should be noted that reference numerals are added to the claims for facilitating the comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

[Figure 1] Overall side view of the seedling planting device

FIG. 2 is a side view of the vertical feeding device.

FIG. 3 is a front view showing a structure for changing the seedling feed amount of the vertical feed belt in the vertical feed device.

[Fig. 4] Plan view of the seedling planting device

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Seedling stand 2 Planting mechanism 14 Support member 16 Seedling amount changing unit, support shaft 17 Seedling amount changing unit, support arm 18 Vertical feeding device 18c Vertical feeding device seedling feeding belt 22 Vertical feeding device driven member 24 Fixed-side driving member 25 Pin member 27 Linking member 29 Wire 29a Wire inner wire 29b Wire outer wire 30 Arm portion 31 Seedling stand fixing portion

Claims (3)

(57) [Claims] 1. A seedling stand (1) on which a seedling is placed and laterally reciprocates laterally, and a planting mechanism (2) for taking out the seedling from the lower part of the seedling stand (1) and planting it on the rice field. , The seedlings placed on the seedling placing table (1) by the seedling feeding belts (18c) arranged vertically along the seedling placing surface (1) of the seedling placing table (1) A vertical feed device (18) for feeding to the lower side, and a driven member (22) provided at the bottom of the vertical feed device (18) at the stroke end of the reciprocating lateral movement of the seedling stand (1). Is configured so that the vertical feeding device (18) is driven by being driven by a fixed-side driving member (24), and supports the lower portion of the seedling placing table (1) so as to be capable of reciprocating lateral movement in the left-right direction. In the vicinity of the supporting member (14) to be placed on the side opposite to the seedling placing surface of the seedling placing base (1). A support shaft (16) which can be freely rotated is arranged in the left-right direction, and an operating tool (15) for rotating the support shaft (16) is provided, and the seedling stand (1) is provided from the support shaft (16). The support arm (17) extended to the side supports the support member (14), and the operation tool (15) rotates the support shaft (16) to rotate the support member (14). By changing the position in the vertical direction, the seedling removal amount changing parts (16) and (17) for changing the seedling removal amount taken out by the planting mechanism (2) from the lower part of the seedling placing table (1) are provided, One end of the inner wire (29a) of the wire (29) is connected to the seedling removal amount changing parts (16) and (17), and the inner wire (29) of the wire (29) is connected.
The other end side of a) is connected to the link member (27) to drive the driven member.
For the pin member (25) that holds the member (22) in the standby position
The linking member (27) is connected to
The link member (27) is connected to the tip end rotation track of the drive member (24).
Placed outside the trace, and the seedling removal amount changing part (16) of the wire (29),
(17) Connection end and the driven member (22)
Both of the connecting side end portions of the wire (29) are arranged to face downward from the upper side, and both ends of the outer wire (29b) of the wire (29) are provided in a downward posture in which both lower end portions are open. At the same time, the intermediate portion of the wire (29) is provided by bending and reversing, and when the seedling taking amount of the planting mechanism (2) is small, the seedling feeding amount of the vertical feeding device (18) is small, and the planting is performed. When the seedling collection amount of the mechanism (2) increases, the vertical feeding device (1
8) A vertical feed device adjusting structure for a rice transplanter, in which the seedling removal amount changing units (16) and (17) and the vertical feed device (18) are linked so that the seedling feed amount of 8) becomes large. 2. The other end of the outer wire (29b) of the wire (29) is located above the operating loci of the driven member (22) and the fixed driving member (24) of the longitudinal feeding device (18). The vertical feeding device adjusting structure of the rice transplanter according to claim 1, wherein the vertical feeding device adjusting structure is attached to a fixing portion (31) of the seedling placing table (1) below an upper end of the seedling feeding belt (18c). 3. A seedling stand (1) on which a seedling is placed and laterally reciprocates laterally, and a planting mechanism (2) for taking out the seedling from the lower part of the seedling stand (1) and planting it on the rice field. , The seedlings placed on the seedling placing table (1) by the seedling feeding belts (18c) arranged vertically along the seedling placing surface (1) of the seedling placing table (1) A vertical feed device (18) for feeding to the lower side, and a driven member (22) provided at the bottom of the vertical feed device (18) at the stroke end of the reciprocating lateral movement of the seedling stand (1). Is configured so that the vertical feeding device (18) is driven by being driven by a fixed-side driving member (24), and supports the lower portion of the seedling placing table (1) so as to be capable of reciprocating lateral movement in the left-right direction. In the vicinity of the supporting member (14) to be placed on the side opposite to the seedling placing surface of the seedling placing base (1). Turning operably support shaft (16) arranged in the lateral direction, said support shaft (16)
From the support arm (1) extended from the seedling stand (1) to
The support member (14) is supported by (7), and the support shaft (16) is rotated to change the position of the support member (14) in the vertical direction. )
The amount of seedlings taken out by the planting mechanism (2) from the lower part of the plant is changeable, and the arm portion (30) is extended from the support shaft (16) to the side opposite to the seedling stand (1). , One end side of the inner wire (29a) of the wire (29) is connected to the arm part (30), and the other end side of the inner wire (29a) of the wire (29) is connected to the longitudinal feed device (18). An outer wire (29b) of the wire (29) which is linked to the driven member (22).
The other end side of the driven member (2) of the vertical feeding device (18).
2) and attached to the fixed part (31) of the seedling placing table (1) above the operation locus of the drive member (24) on the fixed side and below the upper end of the seedling feeding belt (18c), When the seedling removal amount of the planting mechanism (2) decreases, the seedling feeding amount of the vertical feeding device (18) decreases, and when the seedling removal amount of the planting mechanism (2) increases, the vertical feeding device (1).
8) The support shaft (1
6) The vertical feed device adjusting structure of the rice transplanter in which the vertical feed device (18) is linked.