JPH0224408Y2 - - Google Patents

Description

[Detailed description of the invention] This invention uses a soil gathering tool that presses and moves muddy soil toward the planting seedling side as it descends, and is moved up and down in a reciprocating manner in conjunction with planting claws that are driven to circulate up and down. The present invention relates to a rice transplanter configured so that mud scraping holes by planting claws are backfilled or mud is pressed against planted seedlings.

In the above-mentioned rice transplanter, the means disclosed in Japanese Utility Model Application Publication No. 104812/1983 has conventionally been adopted as a means for driving the soil gathering tool.

That is, the rotary cam, which is driven in conjunction with the planting claws, and the soil gathering tool are interlocked and connected so that the rotary cam drives the soil gathering tool both on the descending side and on the ascending side. Therefore, the lowering operation of the mulching tool is performed by the rotational force of the rotary cam, which has the advantage that the mulch is reliably carried out regardless of whether the mud is soft or hard, but the raising operation of the mulching tool This is also done by the rotational force of the rotating cam, so if a clod climbs onto the mulching tool due to the pressing effect of the surrounding mud flowing as the mulching tool descends into the mud, this climbing will occur. The soil clods are thrown up by the lifting device and fall on or near the already planted seedlings, causing the planted seedlings to collapse.
Seedling leaves were sometimes damaged.

The purpose of the present invention is to ensure that mud levying with a mulching tool is performed regardless of the quality of the mud, and to easily prevent mud and soil clods from being thrown up by the mulching tool.

The present invention provides the above-mentioned rice transplanter with a spring that biases the soil gathering tool upward, and
An operating mechanism for driving the soil gathering tool in the downward direction is provided in a state in which it is driven in conjunction with the planting claw and in a state in which it comes into contact with an operating portion of the soil gathering tool, Its action and effects are as follows.

That is, the operating mechanism drives the mulching tool downward by its operating force, and the spring operates the mulching tool upward by its elastic restoring force. Therefore, regardless of the quality of the mud, the mulch tool can be reliably moved downward by the driving force of the operating mechanism, and the mulch can be reliably carried out. However, due to the setting of the biasing force of the spring, when there are no clods or large amounts of mud climbing up on the mulching tool, the mulching tool lifts as specified, and when clods or large amounts of mud climb on top of the mulling tool, the mulch lifts as specified. If the weight acts as a resistance and the levitation tool stops rising, or it rises gradually, it can at least prevent it from rising rapidly and causing the object to be thrown up.
It is now possible to easily prevent planted seedlings from falling over due to soil being thrown up by the soil gathering tool by simply adjusting the spring biasing force appropriately.

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, a pair of left and right wheels 1, 1,
At the rear of the self-propelled body having a control handle 2, etc., two seedling planting devices 3, 3 arranged in parallel in the lateral direction of the body, and a seedling stand 4 for supplying seedlings to these seedling planting devices 3 are installed. A grounding float 5 is attached to the lower part of the machine body to constitute a walking rice transplanter.

As shown in FIG. 2 and FIG. 3, a total of four planting claws, two each corresponding to the planting claws 6 of the two seedling planting devices 3,
A support shaft 8 in the lateral direction of the machine body, on which the soil removal tool 7 is rotatably attached, is attached to the traveling body 9 so that the earth removal tool 7 can be rotated up and down around the axis of the support shaft 8. Attachment, the planting device 3 is attached to the traveling body 9 so as to be freely driven and swingable, and the rotating cam 12 is rotatable integrally with the drive rotation shaft 11 of the drive crank arm 10 so as to be driven in conjunction with the planting claw 6. At the same time, a rocking arm type mulching tool operating section 13 extending integrally and rotatably from the mulching tool support shaft 8 is urged into contact with the rotating cam 12, and the operating section 13 is attached to the rotating cam 12. A spring 14 is attached to the operating portion 13 for biasing the earth gathering tool 7 upward to a position where it comes into contact with the first cam surface 12a and is not activated to raise the earth.
Then, as the planting claw 6 is lowered to the planting position, the rotary cam 1 moves the second cam surface 12b that presses and swings the operation part 13 so that the soil gathering tool 7 descends and makes contact with the ground.
2, the planting claws 6 are circularly driven up and down.
In conjunction with this, the earth gathering tool 7 is driven downward by the rotational force of the rotary cam 12, and is reciprocated up and down in a state in which it is raised by the spring 14,
As it moves downward, the muddy soil behind the planted seedlings is pressed and moved toward the planted seedlings, and the muddy soil scraping holes formed behind the planted seedlings are backfilled by the planting claws 6, and the planted seedlings are laid down. It is designed to prevent

A first connecting bolt 15 is rotatably inserted into the operating portion 13, and the first connecting bolt 15 is formed into an arc shape centered on the axis of the first bolt 15 and slides into a long hole 16 provided in the operating portion 13. The second part was inserted freely.
With the connecting bolt 17, the operation part 13 can be attached and detached freely, and the mounting and fixing posture can be adjusted with the first connecting bolt 1.
It is tightened and connected to the operating part mounting part 8a so that the swing can be changed around the axis of the operating part 13, and by adjusting the mounting posture of the operating part 13, the depth of action of the earth gathering tool 7, that is, the depth of penetration into the mud can be adjusted. , and as the operating section 13 wears out, the rotating cam 12 of the operating section 13
The operating portion 13 is configured to be mounted inverted so as to switch the abutting surface from one of the first surface 13a and the second surface 13b to the other, or to allow only the operating portion 13 to be replaced with a new one.

The rotary cam 12 can be changed to an operating section drive configuration consisting of a sliding member that comes into contact with the operating section 13 and a crank mechanism that reciprocates this sliding member. This is collectively referred to as an operating mechanism 12 that drives the earth mulching tool 7 in the downward direction in this operating state.

The present invention can also be applied to the drive structure of a soil-clamping tool that presses mud near the planted seedlings.

[Brief explanation of drawings]

The drawings show an embodiment of the rice transplanter according to the present invention, and FIG. 1 is a side view of the walking rice transplanter, FIG. 2 is a side view of the mulching tool installation section, and FIG. 3 is a plan view of the mulching tool installation section. It is a diagram. 6... Planting nails, 7... Earth gathering tool, 12... Operating mechanism, 13... Operating section.

Claims (1)

[Scope of Claim for Utility Model Registration] A soil gathering tool 7 that presses and moves muddy soil toward the planted seedling side as it descends is provided so that it can be operated up and down reciprocally in conjunction with planting claws 6 that are driven in circulation up and down. The rice transplanter is provided with a spring 14 that urges the soil gathering tool 7 upward, and an operating mechanism 12 that drives the soil gathering tool 7 in a downward direction, which is driven in conjunction with the planting claw 6. and a rice transplanter which is provided in a state in which it comes into contact with the operation part 13 of the soil gathering tool 7. The rice transplanter according to claim 1, wherein the operating section 13 is detachably attached. The rice transplanter according to claim 1 or 2, wherein the operating mechanism 12 is a rotating cam.