JPS646663Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is such that the swinging arm for rotation operation of a rotary seedling feeder is rotated by its forward movement with respect to the seedling feeder, and is not rotated by its backward movement. A mechanism connected via a directional clutch and biasing the swinging arm toward double motion in order to change and adjust the amount of rotation of the seedling feeder in one swinging motion of the swinging arm; The present invention relates to a seedling feeding device in a seedling planting device that is provided with a rotationally operated stopper that changes the energized return swing position of the arm.

The seedling feeding device is configured to be able to change and adjust the amount of rotation of the seedling feeder in one swinging motion of the swinging arm, for the purpose of changing and adjusting the amount of seedling feeding in accordance with the setting for changing the amount of seedlings to be taken out. However, in the past, the stopper was configured to be spirally moved in the swinging direction of the swinging arm, so that the swinging position for returning the swinging arm to its biasing position could be varied over a large range. In order to change the stopper, it is necessary to operate the stopper many times, which makes it difficult to make quick adjustments, and there is a risk that an unskilled person may make an operational error.

In view of the above-mentioned circumstances, the present invention aims to make it possible to quickly and accurately change and adjust the biasing return swing position of the swing arm by simple modification.

Embodiments of the present invention will be described in detail below based on the drawings.

The illustration shows a four-row seedling planting device equipped on a riding rice transplanter, and as shown in FIGS. 1 and 2,
An inclined seedling tray 1 that is horizontally reciprocated with four pine-shaped seedlings W placed side by side at a constant stroke, and is circulated up and down between the lower end of the seedling tray 1 and the field. four planted claws 2 that are operated, and a plurality of stars that lock and feed each pine-shaped seedling W to the side of the seedling take-out section every time the seedling platform 1 reaches the stroke end. A wheel-shaped rotary seedling feeder 3 is provided, and as the machine advances, each of the pine-shaped seedlings W is moved by each of the planting claws 2.
The seedlings are taken out one by one along the lower end row and planted in the field, and each time the seedling platform 1 reaches the stroke end, the seedling feeder 3 is operated to move each pine-shaped seedling W. The structure is such that four rows of seedlings are automatically planted in succession by repeating the operation of locking and feeding the seedlings to the seedling take-out section.

To drive each of the seedling feeders 3, as shown in FIGS. 2 to 5, a rotating horizontal shaft 4 that supports each of the seedling feeders 3 side by side is attached to a bracket fixed to the lower part of the seedling tray 1. 5, 5, the one-way clutch 6 is rotatably supported around the axis, and when the driving swing arm 6a thereof is moved back and forth with respect to the horizontal rotating shaft 4, the seedling feeder is moved. 3 is rotated, and the seedling feeder 3 is not rotated, and the driving and swinging arm 6a is biased to return to the backward direction by the helical spring 7. At the same time, the horizontal slide shaft 9 for driving the seedling rack is rotatably supported around the axis by the brackets 5, 5 fixed at the bottom of the seedling rack 1 as described above, and the slide shaft 9 is For the attached transmission case 10, the frame member 11 supported thereon is connected to the rotating shaft 12.
The one-way clutch 6 is engaged with a spiral groove 13 formed on the periphery of the slide shaft 9 to be laterally reciprocated at a constant stroke and is supported through the shaft. Arm 6a
Swinging arm 1 that contacts and presses in order to move back and forth.
4 is attached to the inner part of the case of the slide shaft 9, so that the swing arm 14 is swung every time the slide shaft 9 reaches the stroke end.
The driven arm 16, which is pressed and swung, is fixed by protrusions 15, 15 attached to both ends of the holder, and the seedling feeder 3 is rotated each time the oscillating arm 14 is oscillated. It is configured to do so.

Further, helical springs 17, 17 as a mechanism for biasing the swinging arm 14 toward the backward movement without operating the seedling feeder 3 are attached to the driven arm 1.
6 and 16, and a rotary operation type stopper 18 for changing the urging return swinging position of the swinging arm 14 is set so as to act on the tongue piece 14a connected to the swinging arm 14. Bracket 5
The seedling feeder 3 is attached to the swing arm 14 and is configured to be able to change and adjust the amount of rotation of the seedling feeder 3 during one swing motion of the swing arm 14. Specifically, by changing the biasing return swinging position of the swinging arm 14, the protruding piece 15 moves toward the driven arm 16.
As a result, the swinging stroke of the swinging arm 14 is changed.

In order to enable the stopper 18 to change the biasing return swinging position of the swinging arm 14 over the entire predetermined range by rotating the stopper 18 within 360 degrees, a three-stage receiving surface S ₁ is provided on the circumferential surface of the stopper 18 . , S ₂ , and S ₃ are formed into different diameter bodies. In addition, the stopper 18,
A rotating operation handle 18a is provided in a protruding manner, and a positioning elastic protrusion 18b which can be engaged in a locking groove 19 formed in the bracket 8 is provided in a protruding manner. Furthermore, as shown in FIG. 6, the bracket 5 is provided with:
A display board 20 is provided that indicates the adjustment status of the stopper 18 in the order of standard, medium, and small.

In carrying out the present invention, the stopper 18 may be configured so that the energizing return swinging position of the swinging arm 14 can be changed steplessly.

In summary, the seedling feeding device in the seedling planting device according to the present invention has the structure described above, and the stopper 18 is arranged so that the peripheral surface thereof is the receiving surface S ₁ , S ₂ , S ₃ .
It is characterized in that it is configured to have a different diameter body so that the biasing return swing position of the swing arm 14 can be changed.

That is, since the biasing return swinging position of the swinging arm 14 can be changed by rotating the stopper 18 within 360 degrees, the above-mentioned structure in which the stopper 18 is spirally moved in the swinging direction of the swinging arm 14 is used. Thus, we have obtained a seedling feeding device in a seedling planting device that can solve the problems described above, make desired adjustments quickly and accurately, and can be used more conveniently.

Moreover, since the stopper is constructed as a body with different diameters whose peripheral surface is a receiving surface, for example, a fixed shaft parallel to the axis of the swinging arm 14 is provided, and the stopper is connected to the fixed shaft. As in the case where an arm-shaped stopper whose position can be adjusted around the axis of a fixed shaft is provided, the arm-shaped stopper rotates around the axis of the fixed axis due to a reaction force due to position regulation. This has the advantage of ensuring reliable position regulation.

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

The drawings show an embodiment of the seedling feeding device in the seedling planting device according to the present invention, and FIG. 1 is a plan view of the seedling planting device, and FIG. 2 is a partially cutaway side view showing the attachment part of the rotary seedling feeder. Figure 3 is an expanded vertical sectional front view showing the same part, Figure 4 is a cross-sectional plan view showing the rotating shaft attachment part, Figure 5 is a partially cutaway side view of the stopper attachment part, and Figure 6 is the handle attachment. FIG. 3...Seedling feeder, 6...One-way clutch, 14
... Swinging arm for rotational operation, 17 ... Biasing mechanism,
18...stoppers, _S1 , _S2 , _S3 ...receiving surfaces.

Claims (1)

[Scope of utility model registration request] Swing arm 14 for rotational operation of the rotary seedling feeder 3
is connected to the seedling feeder 3 via a one-way clutch 6 so that it can be rotated by its forward movement and not rotated by its return movement, and the In order to change and adjust the amount of rotation of the seedling feeder 3, there is provided a mechanism 17 for biasing the swinging arm 14 toward backward movement, and a rotary operation type mechanism for changing the swinging position of the swinging arm 14 to return to the biasing direction. A seedling feeding device in a seedling planting device provided with a stopper 18, wherein the stopper 18 is formed into a body of different diameters whose peripheral surfaces are receiving surfaces S ₁ , S ₂ , S ₃ , and the swing arm 1. A seedling feeding device in a seedling planting device, characterized in that the energizing return swing position of 14 can be changed.