JPH05111314A - Transplantation apparatus - Google Patents

Abstract

PURPOSE:To prevent the generation of contact noise of a claw of a planting clutch at the stop of motion by providing a means for the forced transfer of a planting rod to forcedly shift a planting rod slightly further in the forwarding direction when the planting clutch is disconnected. CONSTITUTION:A planting rod 63 is stopped at a prescribed position in a stroke with a planting clutch when the power transmission to a transplantation apparatus 12 is stopped. After disconnecting the planting clutch, the planting rod is further shifted forcedly in the forwarding direction with a cam 81 for the forced shifting of the planting rod. The claw of the planting clutch is completely separated to prevent the contact noise of the claw.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transplanting device such as a vegetable transplanter for planting seedlings on a seedling mounting table in a field.

[0002]

2. Description of the Related Art A planting rod having a pair of planting claws is vertically moved along a predetermined endless track, and the planting claws clamp the seedlings supplied to predetermined positions at the upper part of the stroke, and There is a transplanting device such as a vegetable transplanter that opens the seedlings sandwiched in the lower part of the field in the field. This type of transplantation device is transmitted from a drive source side through a one-rotation inertial clutch as a planting clutch, and when the planting work is stopped at the time of turning or the like, the planting rod has a predetermined position in the stroke, for example, top dead center. It is supposed to stop at.

[0003]

However, there is a problem in that when the one-rotation inertial clutch is disengaged, the clutch pawls come into contact with each other to generate a clicking sound.

[0004]

In order to solve the above problems, the present invention has the following constitution. That is, the transplanting device according to the present invention moves an implanting rod having a pair of planting claws up and down along a predetermined endless track, and at the upper part of the stroke, the planting claws are fed to a predetermined position for seedlings. In a transplanting device that is sandwiched and opened to the field scene the seedling sandwiched by the planting claw at the bottom of the stroke, when the transmission to the transplanting device is stopped, the planting is performed at a specific position in the stroke. It is characterized in that a planting clutch for stopping the rod and a planting rod forcibly moving means for forcibly advancing the planting rod in the path direction after the planting clutch is disengaged are provided.

[0005]

[Operation] After the planting clutch is disengaged, the planting rod is forcibly advanced in the path direction by the planting rod forcibly moving means, whereby the claw of the planting clutch is completely separated and the claw contact noise is generated. It will not occur.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an overall view of a vegetable transplanting machine according to an embodiment of the present invention. This vegetable transplanting machine 1 has an engine 2 and a traveling section mission case 3 arranged in the front part of the machine body and a traveling section. Rotating cylinders 5, 5 projecting from the left and right side surfaces of the mission case 3
The front wheel transmission cases 6 and 6 are attached diagonally downward to the rear end of the vehicle, the front wheels 7 and 7 as propelling wheels are axially supported at the lower end of the front wheel transmission case, and the rear case of the traveling section transmission case 3 is internally provided. A front transmission frame 9 having a transmission means is fixedly connected, a planting section mission case 10 is provided at a rear end portion thereof, and a rear transmission frame 11 incorporating a transmission means is extended rearward from the planting section mission case. However, the transplanting device 12 is provided at the rear end portion. A rear wheel support rod 14 is laterally mounted near the front of the planting section mission case 10, and rear wheel support arms 15 are provided at both left and right ends thereof.
A rear wheel 16 is pivotally mounted on the lower end of the rear wheel support arm. Further, a soil excavating device 18 and a pressure suppressing device 19 are attached to a frame body 17 formed integrally with the rear wheel support rod 14.

On the upper part of the machine body, a seedling table 21 which is slightly inclined so that the front part is in a higher position is slidably supported left and right by a horizontal frame 22 and a rail 23 and is adjacent to the rear end part of the seedling table. Then, a seedling receiving plate 26 having a seedling take-out port formed at an appropriate position is integrally provided with the lateral frame 22. The bottom surface of the seedling mounting table 21 is open, and a seedling feeding belt 27 for transferring the seedlings on the table in the direction of the seedling take-out port is attached thereto. When the pot seedling is placed on the seedling placing table 21 and the planting section is activated, the seedling placing table 2
1 moves laterally and sequentially supplies the seedlings in the front row in the transfer direction located on the seedling receiving plate 26 to the seedling take-out port. When the seedling placing table 21 reaches the end portions of the left and right strokes, the seedling feeding belt 26 moves by an appropriate amount and transfers the seedling group on the seedling placing table backward by one row.

As shown in FIGS. 2 to 4, the implanting device 12 is a first rotatably attached to the rear transmission frame 11.
The rotating case 61, the second rotating case 62 rotatably attached to the first rotating case, and the implanting rod 63 rotatably attached to the second rotating case are provided. The nails 65, 65 and the seedling pushing tool 66 are provided. The first rotating case 61 is in the A direction, and the second rotating case 62 is
Rotate in the B direction at a predetermined speed ratio, so that the implanting rod 63 relatively moves in a vertical direction by drawing a slender elliptical orbit. 2 and 3, L ₁ represents the locus of the mounting rod mounting shaft, and L ₂ represents the locus of the tip of the planting claw. At the upper part of the stroke, the planting claws 65, 65 are closed to sandwich the seedling supplied to the seedling take-out port, and at the lower part of the stroke, the planting claw 6
The seedling pushing tool 66 protrudes and the sandwiched seedlings 5 and 65 are opened, and the seedlings are opened into the seedling transplant holes formed in the field scene.

In the earth digging device 18, the earth digging tool 18a intermittently moves down in synchronization with the transplanting device 12 to form a hole for transplanting seedlings in a field scene.

In the compression device 19, compression wheels 19b, 19b having a relatively large weight are obliquely attached to a compression wheel support frame 19a rotatably attached to the frame body 17 so that the distance between the compression wheels 19b and 19b becomes smaller toward the bottom. With the progress of the aircraft, the squeezing wheels 19b, 19b roll on the field scene so that the soil on both the left and right sides of the transplanted seedlings is brought inward to squeeze the soil.

The front wheels 7 and 7 and the rear wheels 8 and 8 can be lifted and lowered by an elevator device (not shown), and the front wheels and the rear wheels are appropriately selected based on the detection result of the ground sensor 68 that detects the height of the field scene. Raise and lower and keep the planting depth of seedlings constant.

A one-rotation inertial clutch 70 shown in FIG. 5 is provided as a planting clutch inside the planting section mission case 10, and power is transmitted through the clutch through the clutch.
It is transmitted to 2. In the figure, 71 is a primary clutch body fixedly attached to the primary shaft 72, 73 is a secondary clutch body slidably attached to the secondary shaft 74, and both clutch bodies 71 and 73 are engaged with each other. Claws 71a and 73a are provided. The secondary clutch body 73 is biased to the primary clutch body 71 side by the spring 75, and the claws 71a and 73a are always engaged with each other to transmit power from the temporary side to the secondary side. When the clutch pin 76 is pressed against the tapered surface 73b of the secondary clutch body 73, the secondary clutch body 73 moves to the opposite side of the primary clutch body 71 with rotation, and when the secondary clutch body 73 reaches a predetermined angle, the pawl 71a. ，
73a is disengaged and transmission is cut off. At this time,
As shown in FIG. 2, the implantation rod 63 is set to be located at the top dead center P ₁ of the stroke.

The implanting rod 63 is integrally attached to an implanting rod mounting shaft 80 provided on the second rotating case 62. An end portion of the implanting rod mounting shaft 80 opposite to the side where the implanting rod 63 is attached projects to the outside of the second rotating case 62, and a forced movement cam 81 is integrally attached to the projecting end portion. Further, the second rotation case 62 is provided with an arcuate brake arm 82, one end of which is pivotally supported by a pin 85 and the other end of which is pulled by a spring 86 toward the forced movement cam 81. .. The forced movement cam 81 moves in the same direction from beginning to end, but the brake arm 82 changes its orientation from start to finish with the rotation of the second rotating case 62, and the inner circumference of the brake arm 82 during one cycle of the implanting device. Part 82
While a is slidingly contacting the outer peripheral portion of the cam 81, the brake arm 82
Rotates once around the forced movement cam 81. That is, the tension of the spring 86 elastically biases the implanting rod mounting shaft 80 toward the base side of the second rotating case 62. As a result, the rattling of the planting rod 63 is reduced, and the seedlings are planted well. As described above, when the one-rotation inertial clutch 70 is disengaged, the implanting rod 63 stops at the top dead center P ₁ .
At this position, the inner peripheral portion 82a of the brake arm 82 is located at the cam 8
1 is in point contact with the end portion of the upper edge portion 81a of 1 and is in an extremely unstable state, so that the action of the spring 86 causes the implantation rod 63 to move.
Moves a little further in the traveling direction, and stops at a position P ₂ where the inner peripheral surface 82a of the brake arm comes into surface contact with the upper edge portion 81a of the cam as shown in FIG. In this way, the cam 81, the brake arm 82, and the like, which are the means for forcedly moving the implantation rod,
After the implantation rod 63 stops at the top dead center, the implantation rod 6 is further moved in the traveling direction.
3 is forcibly moved slightly. At the same time, the secondary clutch body 73 of the one-rotation inertial clutch 70 also rotates,
The secondary clutch body 73 moves away from the primary clutch body 71, and the claws 71a and 73a of both clutch bodies are completely separated.

FIGS. 6 and 7 show different embodiments of the implanting device, the implanting device 12 ′ having an implant rod mounting shaft 80.
A disc 90 is eccentrically attached to the protruding end of the disc, and a smooth guide surface 91 is in sliding contact with the outer peripheral surface of the disc.
A guide plate 91 having a is fixedly provided on the rear transmission frame 11. If such a guide plate 91 for restricting the position of the implantation rod 63 in the front part of the stroke is provided,
At least when the seedling is taken out, rattling of the planting rod 63 is eliminated, and troubles such as the planting claws 65, 65 biting into the seedling receiving plate 26 can be prevented.

[0015]

As described above, the transplanting device according to the present invention includes the implanting rod forcibly moving means for slightly forcibly advancing the implanting rod in the path direction after the implanting clutch is disengaged. By providing it, the contact noise of the claws of the planting clutch at the time of stop is no longer generated.

[Brief description of drawings]

FIG. 1 is an overall side view of a vegetable transplanter according to an embodiment of the present invention.

FIG. 2 is a side view of the transplantation device in one state.

FIG. 3 is a side view of the implanting device in a state different from the state shown in FIG.

FIG. 4 is a plan view of the transplantation device in the state of FIG.

FIG. 5 is an explanatory diagram of a one-rotation inertia clutch.

FIG. 6 is a side view of an implant device different from the implant devices shown in FIGS. 2-4.

FIG. 7 is a plan view of the implanting device shown in FIG.

[Explanation of symbols]

 1 Vegetable Transplanter 2 Engine 7 Front Wheel 12, 12 'Transplanting Device 16 Rear Wheel 21 Seedling Stand 63 Implantation Rod 65 Implantation Claw 70 1 Rotational Inertial Clutch 80 Implantation Rod Attachment Axis 81 Implantation Rod Forced Moving cam 82 Brake arm 90 Disc 91 Guide plate

Claims (1)

[Claims] 1. A planting rod having a pair of planting claws is vertically moved along a predetermined endless track, and the planting claws hold the seedlings supplied to a predetermined position at the upper part of the stroke, and In a transplanting device in which the seedlings sandwiched by the planting claws at the bottom of the plant are opened to the field scene, the planting rod is stopped at a specific position in the stroke when the transmission to the transplanting device is stopped. An implanting device, comprising: an attachment clutch; and an implanting rod forcibly moving means for forcibly advancing the implanting rod in the path direction after the engagement of the attaching clutch.