JPH05219810A - Rice transplanter - Google Patents

Abstract

PURPOSE:To change and regulate the extent of the vertical feed for each row by installing a driving arm for each row and an operating arm of a one-way rotating clutch in specific states. CONSTITUTION:A driving arm 20 is rocked with a rotating cam 19 at a transverse movement end of a seedling carrier 7 and a rotating shaft 21 is rotated to interlock and rotate a driving arm 22 for each row. An operating arm 24 for a one-way rotating clutch in a vertical feeder 9 for each row is brought into contact with the driving arm and rotated from its standby position and subjected to vertical feeding operation. When the reference standby position of the operating arm for each row is changed by a regulating mechanism (A) for the extent of seedling feed, the extent of contact rotation of the operating arm with the driving arm for each row is changed to change and regulate the extent of rotation of a driving wheel 15 for feeding.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided with a plurality of planting claws for taking out planted seedlings from the lower end of a seedling stand on which seedlings for planting are placed and planting them in a field. At the end of the lateral movement stroke of the seedling stand, the drive arm fixed to the rotating shaft by the rotating cam is oscillated by a predetermined amount, and the rotation of the rotating shaft causes the drive wheel for feeding through the one-way rotating clutch. The present invention relates to a rice transplanter in which a vertical feeding device that rotates a body and sends a predetermined amount of placed seedlings toward the planting claw is provided for each row.

[0002]

2. Description of the Related Art In the above rice transplanter, conventionally, for example, as disclosed in Japanese Utility Model Laid-Open No. 2-73911, rotary cams that are constantly driven to rotate are provided on both left and right sides of a planted transmission case in a fixed position. At the same time, a pair of left and right drive arms that rotate by contacting the rotary cam at the stroke end are attached to the rotary spindle that is horizontally supported on the side of the seedling stand that moves laterally, and the rotary spindle and the drive side wheels of the vertical feed device. There has been a structure in which the rotation shaft of the body is interlocked with each other via a push-pull rod and a one-way rotation clutch.

[0003]

However, in the above-mentioned conventional structure, the drive wheel of each longitudinal feed device is externally fitted and attached to the rotary shaft so as to be rotatable integrally, and furthermore, by the contact of the rotary cam. The rotation amount of the drive arm is always constant, and the vertical feed amount of each line is fixed. As a result, for example, when the consumption of seedlings for each row is slightly different due to an assembly error or the like, or when the seedling removal amount is adjusted by the planting mechanism. However, it is not possible to adjust the vertical feed amount of seedlings, and the feed amount may be too large for the seedlings to bulge in a bent shape, or the seedling planting operation may not be performed smoothly, or the feed amount may be too small for one plant. There was room for improvement as there was a risk that the number of planted plants would be insufficient and the stock might run out. The present invention aims to eliminate the above-mentioned problems.

[0004]

A feature of the present invention is that in the rice transplanter described at the beginning, each rotary shaft is provided with each row drive arm that is interlocked with each other, and the stand-by in the vertical feeding device. The actuating arm of the one-way rotating clutch that is biased to return to the position is constituted so that it is abutted and swung by each of the thread drive arms to perform a longitudinal feed operation, and the reference standby position of the operating arm is set to each of the thread drive arms. The point is that it has a seedling feed rate adjustment mechanism that changes it.

[0005]

[Operation] At the lateral movement stroke end of the seedling stand,
The drive arm abuts and oscillates by the rotary cam to rotate the rotary shaft, and accordingly, the respective thread drive arms also rotate in conjunction with each other. Then, the operating arm of the one-way rotating clutch in each of the longitudinal feeders is contact-rotated from its standby position to perform the longitudinal feed operation. At this time, if the reference stand-by position of the operating arm of each row is changed by the seedling feed amount adjusting mechanism, the contact rotation amount by each row drive arm of the operating arm becomes different,
It is possible to change and adjust the rotation amount of the feed drive wheel, that is, the vertical feed amount. Moreover, by setting the reference standby position of the actuating arm to a position at which the strip drive arms do not come into contact with each other, it is possible to prevent the vertical feed operation from being performed in that strip, and stop the planting operation for each strip. Can be made

When the sliding plate is positionally adjusted in the seedling vertical feed direction with respect to the seedling stand to adjust the seedling removal amount, the sliding plate should be adjusted in position so that the seedling removal amount is large. By linking so that the vertical feed amount of seedlings is large, it is possible to set an appropriate vertical feed amount for all planting rows without manually operating each row.

[0007]

[Effects of the Invention] Therefore, even if the seedling removal amount of each row is different due to variations in the assembling accuracy of the planting claws of each row, the vertical feed amount for each row is increased. Change and adjust
It is possible to set an appropriate vertical feed amount, and even when the seedling removal amount change adjustment for all the lines is performed, the vertical feed amount for each line can be set to an appropriate value. Furthermore, the planting operation for each planting strip can be turned on and off, and it is possible to provide the one that also has the function of each strip clutch.

[0008]

Embodiments will be described below with reference to the drawings. Figure 5
Shows the rear part of the riding type rice transplanter. This rice transplanter comprises a seedling planting device 2 which can be lifted up and down via a link mechanism 1 at the rear part of a riding type traveling body and can be freely rolled left and right around a longitudinal axis.
Are connected. The seedling planting device 2 is a rectangular pipe-shaped device which is laterally disposed over substantially the entire width in a planting transmission case 4 which is connected to a pivotal boss member 3 of a link mechanism 1 so as to be rotatable around the front-rear axis. The frame rod 5 made of the aluminum pulling material is fixedly connected, and a plurality of feed cases 6 are fixedly extended rearward in a cantilever manner at appropriate intervals with respect to the frame rod 5 with respect to the frame rod 5. The seedling stand 7 is supported so as to be reciprocally movable in the lateral direction. Then, planting mechanisms 8 are arranged on the left and right sides of the rear part of the feed case 6, and the planting claws 8a in each planting mechanism 8 take out the seedlings one by one from the lower end of the seedling stand 7 and place them in the field. It is configured to be planted. An endless rotary belt type vertical feeding device 9 with a protrusion for vertically feeding a predetermined amount of placed seedlings toward the planting mechanism 8 at a lateral movement stroke end is provided on each row seedling placing surface 7a of the seedling placing table 7. It is provided. The rotation support shaft 11 is supported by the boss portion 10 formed on each of the feed cases 6, and the ground floats 13 are respectively attached to the ends of the three arms 12 extending integrally from the rotation support shaft 11.
It is deployed by connecting the pivots.

The vertical feeding device 9 includes upper and lower wheels 14, 1
The endless rotation belt 9a with a projection is wound around 5 and the lower wheel 15 is rotationally driven in a predetermined direction by a predetermined amount to perform the seedling vertical feeding operation. That is, as shown in FIG. 3, the lateral rotation shaft 17 is arranged so as to project laterally outward from the planted transmission case 4, and the other end is supported by the bracket 18 to be horizontally mounted. A pair of left and right rotating cams 19 are attached to the rotating shaft 17 in the middle thereof.
However, at the end of the lateral movement stroke of the seedling placing table 7, the drive arm 20 linked to the vertical feeding device 9 is abutted and swung to rotate the endless rotating belt 9a with protrusions by a predetermined amount, and the seedling is placed. Is vertically fed by a predetermined amount.
The drive arm 20 is spring-biased so as to return to the predetermined standby position. Then, as shown in FIG. 2, the drive arm 20 is integrally rotatably attached to the rotation support shaft 21 of the drive side wheel body 15, and is provided in the vicinity of the drive side wheel body 15 in each longitudinal feed device 9. Each of the linear drive arms 22 is integrally rotatably attached to the rotary support shaft 21, and the operating arms 24 of the one-way rotary clutch 23 interposed between the rotary support shaft 21 and the drive wheel body 15 are provided. The contact pins 22a formed on the linear drive arm 22 are configured to be contact rotated. The actuating arm 24 is configured to urge the spring 25 to return to the reference standby position on the side opposite to the contact interlocking rotation direction by the respective thread drive arms 22, and the reference standby state of the actuating arm 24. A seedling feed amount adjusting mechanism A for adjusting the seedling vertical feed amount by changing the position with respect to each row drive arm 22 is provided. More specifically, as shown in FIG. 1, each of the operating arms 24 is externally fitted to the rotary support shaft 21 so as to be rotatable relative to each other, and a lateral projection 26 is formed on the operating arm 24. A link member 28 having a long hole 27 for allowing the operation at the time of maximum seedling picking operation is engaged and linked, and the link member 28 is linked by an operation wire 29 by a vertical feed amount adjusting lever 30. The seedling feed amount adjusting mechanism A is operated by pulling up against the spring force of the return urging spring 25 to change the reference standby position.
Is configured. The upper outer wire receiving member 31 of the operation wire 29 is attached and fixed to the rear surface of the seedling stand 7, and the adjustment guide portion 3 of the vertical feed amount adjusting lever 30.
2 are integrally formed. The vertical feed amount adjusting lever 30 is pivotally supported on the inner side of the intermediate partition 33 of the seedling stand 7.
The seedling stand 7 is configured to be divided into each row at the center portion in the width direction of the intermediate partition 33, and when the divided seedling stand is assembled, as shown in FIG. 33
A split pivot shaft portion 34 formed on the outer side of a is fitted and connected from the left and right. Similarly, the outer wire receiving member 35 on the lower side is also configured to be pivotally supported inside the intermediate partition 33. The sliding plate 36 slidably supporting the lower end of the seedling stand 7 and receiving and supporting the tip of the placed seedling is positionally adjusted with respect to the seedling stand 7 along the vertical seedling feeding direction. The amount of seedlings taken by the planting claws 8a can be changed by freely adjusting the sliding plate 36. That is, the sliding plate 36 is interlockingly linked to the swinging middle part of the outer wire receiving member 35 on the lower side via the linking member 37 and the locking member 38 arranged inside each intermediate partition 33, The outer wire receiving member 35 on the lower side is vertically swung by a seedling picking amount adjusting lever 39 so that the sliding plate 36 is vertically slid. Accordingly, the lower outer wire receiving member 35 of the operation wire 29 is vertically displaced in accordance with the seedling removal amount adjusting operation, and as a result, the operation arm 24 is vertically rotated and the vertical feed amount is also changed. The configuration is adjusted. At this time, the larger the amount of seedlings taken, the larger the vertical feed amount of seedlings. Further, the vertical feed amount adjusting lever 30
The adjustment range of is set so that the contact pin 22a of each row drive arm 22 can be adjusted to a position where it does not contact the actuating arm 24. The seedling planting operation is not performed regardless of the operation of the attachment claws 8a, and the function similar to that in the state where each clutch is disengaged can be exhibited.

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]

FIG. 1 is a side view of a vertical feed amount adjusting mechanism.

[Figure 2] Rear view of each longitudinal drive unit

FIG. 3 is a cross-sectional view showing a lever attached state.

FIG. 4 is a rear view of the lateral feed drive mechanism.

[Figure 5] Side view of the rear of rice transplanter

[Explanation of symbols]

 7 Seedling support 8a Planting claw 9 Vertical feeding device 19 Rotating cam 20 Drive arm 21 Rotating shaft 22 Each row drive arm 23 One-way rotating clutch 24 Actuating arm 36 Sliding plate A Seedling feed amount adjusting mechanism

Claims (2)

[Claims] 1. A seedling on the seedling stand (7), comprising a plurality of planting claws (8a) for taking out the planted seedlings from the lower end of the seedling stand (7) on which the seedlings for planting are placed, and planting them in a field. Mounting surface (7
In a), the drive arm (20) fixed to the rotating shaft (21) by the rotating cam (19) is oscillated by a predetermined amount at the end of the lateral movement stroke of the seedling stand (7), and this rotating shaft ( By the rotation of (21), the feed drive wheel body (15) is rotated through the one-way rotation clutch (23) to send the placed seedlings by a predetermined amount toward the planting claw (8a). 9) A rice transplanter provided with each row, wherein each row drive arm (2) that rotates in conjunction with the rotary shaft (21) for each row.
2) is provided, and the one-way rotation clutch (23) is urged to return to the standby position in the vertical feeding device (9).
The operating arm (24) is abutted and oscillated by each of the linear drive arms (22) to perform a vertical feed operation, and
A rice transplanter equipped with a seedling feed amount adjusting mechanism (A) for changing the reference standby position of the operating arm (24) with respect to each of the row drive arms (22). 2. A seedling stand (7) is provided with a sliding plate (36) slidably supporting the lower end of the seedling stand (7) and receiving and supporting the tip of the placed seedling. On the other hand, the sliding plate (3) is configured so as to adjust the position along the vertical seedling feeding direction to adjust the seedling removal amount by the planting claw (8a).
In association with the position adjustment of 6), the seedling feed amount adjusting mechanism (A) and the sliding plate (36) are linked so that the vertical feed amount increases as the seedling removal amount increases. The rice transplanter according to claim 1.