JPH0216575Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is a seedling feeder that supplies seedlings for each row to a seedling take-out unit using a conveyor belt on a seedling stand on which multiple rows of seedlings are placed in parallel. The present invention relates to a rice transplanter equipped with a mechanism and a clutch that independently stops the operation of some of the plurality of planting claws arranged corresponding to the seedlings of each row.

[Prior art]

Conventionally, a system has been proposed (Utility Model Publication No. 57-53125) that stops vertical feeding by disengaging a clutch provided in the seedling feeding mechanism for each row in response to stopping the planting claws of each row.

[Problem that the invention attempts to solve]

However, the above-mentioned conventional example has the disadvantage that the structure is complicated and the cost is high. Similar to this, it is also possible to loosen the tension on the vertical conveyor belt so that the operation of the drive roller is not transmitted to the conveyor belt, but in such a case, the conveyor belt with the loosened tension can be It is expected that problems such as the seedling bed soil on the belt will collapse and the seedlings will be damaged due to the indentation of the seedling surface of the seedling tray.

This invention aims to solve the above drawbacks.
Although the structure is simple, it is possible to reliably stop the vertical feed device in conjunction with the stop operation of the planting claw, and it also solves the conventional drawbacks and allows the conveyor belt to move away from the seedling surface of the seedling stand when stopped. To provide a rice transplanter having a seedling feeding mechanism that does not damage stored seedlings by denting.

[Means for solving problems]

The characteristic configuration of the present invention for achieving the above object is that a rice transplanter having a seedling feeding mechanism configured with a conveyor belt wound around a lower driving pulley and an upper driven pulley is capable of handling a small number of seedlings. The planting claw of the planting clutch stops in conjunction with the seedling feeding operation of the row corresponding to the planting claw.The seedling feeding mechanism of the row corresponding to the planting claw is placed near the driven side of the seedling feeding mechanism. The main feature is that a vertical feed stopping means is provided for stopping the feeding action.

[Effect]

According to the above configuration, the conveyor belt in the seedling feeding mechanism corresponding to the row where the planting claw is stopped is rotated by the lower drive pulley and has a stopping action near the driven side, so the conveyor belt is always tensioned. The vehicle will be stopped in the same condition.

[Effect of idea]

Therefore, it is possible to stop the conveyor belt at the planting stop row by simply adding a relatively simple braking mechanism, without using a complicated and expensive clutch to connect and disconnect the power to the driving pulley of each conveyor belt. It became.

Moreover, since the belt that is stopped is always maintained in a tensioned state, the soil of the seedlings stored on the belt is not damaged, such as crumbling.

〔Example〕

Figure 2 shows the overall side view of the riding rice transplanter.

In this rice transplanter, a six-row planting device 3 equipped with a forward-sloping seedling tray 2 is connected to the rear of a passenger vehicle body 1 so as to be adjustable up and down. The seedling blocks are moved reciprocatingly and laterally at a constant stroke with respect to six sets of planting claws 5 that operate vertically in circulation, and are configured to cut and plant seedling blocks one by one from the lower end of the seedlings W placed in parallel in six rows. , and is configured to send the seedlings W downward at the stroke end where cutting of one row at the lower end has been completed.

As shown in FIG. 3, on the seedling stand 2, as a seedling feeding mechanism A, a pair of rubber conveyor belts 6, which are relatively long vertically and wide horizontally, are provided for each row. This conveyor belt 6 is wound around a lower driving pulley 7 which is rotated by a fixed angle at each stroke end of the seedling tray, and an idler tension type driven pulley 8 which is stretched upward. A large number of tapered seedling locking protrusions 9 are integrally provided on the outer peripheral surface in a staggered manner. The driving pulleys 7 are all driven and stopped in an integrated manner, but the driven pulleys 8 are supported independently in two adjacent strips.

Reference numeral 10 denotes a clutch for planting a small number of rows, which controls the driving and stopping of the planting claws 5, 5 for two adjacent rows, and a total of three clutches are provided. Further, reference numeral 11 denotes a braking mechanism for two adjacent conveyor belts 6, and a total of three braking mechanisms are provided. This braking mechanism 11 connects braking blocks 14, 14, such as rubber, attached to the free ends of a pair of left and right braking arms 12, 12 via swing brackets 13, to a seedling locking protrusion 9.
The structure is such that the pressure is applied to the outer circumferential surface of the conveyor belt 6 while avoiding the outer peripheral surface of the conveyor belt 6.

16 is the clutch 10 for planting a small number of rows.
It is a clutch lever for performing an on/off operation for the clutch lever 16, and in conjunction with an operation to stop the planting claw 5 of this clutch lever 16 (clutch cutting operation), the seedling feeding mechanism A corresponding to the stopped planting claw 5 is In order to stop the conveyor belt 6, the clutch lever 1
6 and a connecting rod 15 that connects the pair of left and right brake arms 12, 12 are interlocked via a wire 17, and a brake piece 1 is attached to the outer peripheral surface of the conveyor belt 6.
1 is pressed to stop the rotation of the conveyor belt 6, thereby causing a slip between the conveyor belt 6 and the driving pulley 7.

The operation box 18 of the clutch lever 16 is attached to a horizontal frame 20 that connects support stays 19, 19 extending from both left and right sides of the planting mission case M, and the clutch lever 16 and a pair of left and right braking arms 12 are connected to each other. , 12 is connected to the seedling stand 2 as shown in FIG.
The wire 1 is arranged in a horizontal U shape on the back side of the
7, and is configured to handle slack in the wire that occurs as the seedling stand is moved laterally so that the wire does not slacken.

[Another example]

As a means for applying braking to the conveyor belt 6, a fifth
As shown in FIG. 6, protruding pawls 21 having approximately the same width as the width of each conveyor belt 6 are provided, and the protruding pawls 21 are engaged with seedling locking protrusions 9 formed on the circumferential surface of the conveyor belt 6. Alternatively, the rotation of the conveyor belt 6 may be stopped.

[Brief explanation of the drawing]

The drawings show an embodiment of the rice transplanter according to the present invention, in which Fig. 1 is a vertical side view of the seedling transport section, Fig. 2 is an overall side view of the rice transplanter, Fig. 3 is a rear view of the seedling stand, and Fig. 4 is a side view of the rice transplanter. The figure is a rear view of the seedling stand showing the arrangement of the wire connecting the braking mechanism and the clutch operating lever, FIG. 5 is a side view showing another embodiment of the braking mechanism, and FIG.
It is a rear view of the same. 2... Seedling stand, 4... Seedling take-out section, 5... Planting claw, 6... Conveyor belt, 7... Drive pulley,
8... Driven pulley, 10... Clutch, A...
Seedling feeding mechanism, W...Seedlings.

Claims (1)

[Scope of utility model registration request] Seedlings W for each row are placed on a seedling loading table 2 on which multiple rows of seedlings W are placed, and transferred to the seedling take-out section 4 by a conveyor belt 6 wound around a lower driving pulley 7 and an upper driven pulley 8. In the rice transplanter, the rice transplanter is equipped with a seedling feeding mechanism A for feeding seedlings W, and a clutch 10 that independently stops operation of some of the plurality of planting claws 5 arranged corresponding to the seedlings W of each row. clutch 1
A vertical feeding stop means is provided which acts on the seedling feeding mechanism A near the driven side of the seedling feeding mechanism A of the row corresponding to the stop planting claw 5 in conjunction with the stopping operation of the planting claw 0 to stop feeding. Characteristic rice transplanter.