JPS60728Y2 - Tilling claw structure in tiller - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a tilling claw structure in a tiller.

Conventionally, in tillage work using machete claws as the tiller claws of a tiller, the rotation of the machete claws for tilling work causes the machete claws to strike the field, causing the tiller's body to move forward. This has the drawback of creating a dashing force, which poses a danger to driving operations.

This idea combines a machete claw attached to the rotating claw shaft and a normal claw, and by making the rotation radius different, the normal claw suppresses the aircraft's dashing force and allows safe operation. The present invention aims to provide a tilling claw structure for a tiller.

An embodiment of this invention will be described in detail with reference to the drawings. A indicates a tractor, and a tiller B is connected to the rear of the tractor A to form a tiller.

The tilling device B receives power transmitted from the tractor A and rotates the rotary claw shaft 1.

The rotating claw shaft 1 has a required number of claw holders 2 attached to its outer periphery, and the claw holders 2 have their proximal ends radially attached to the rotating claw shaft 1 and are shaped like hollow square pipes. The proximal end of the claw body is inserted into the tip of the hollow square pipe-shaped claw holder 2, and the bolt 3. It is fixed with a nut 4.

5 indicates a machete claw, 6 indicates a regular claw, and the proximal ends of the machete claw 5 and the normal claw 6 are inserted into the hollow portion at the tip of the claw holder 2 with their sides in close contact with each other, Bolt 3. Natsuto 4
The tightening is fixed.

7 indicates a washer.

Here, if we explain the shapes of the machete claw 5 and the regular claw 6,
The machete claw 5 has a straight flat portion 5-1 in the direction of rotation of the rotary claw shaft 1.
is formed in a convex curved shape, and the tip of the curved part is bent laterally to form a bent part 5-2, and as the rotary claw shaft 1 rotates, the convex curved part of the hatchet claw 5 becomes the blade edge part 5. - From 3, dig into the field and perform tilling work with the rake surface of the bend.

On the other hand, the regular claws 6 are attached to the machete claws 5 with their sides in close contact with each other, and are formed to be slightly curved in the opposite direction to the curved direction of the machete claws. The rotation radius is half of the rotation radius of the tip of the machete claw 5, and during tilling work, the tip of the claw 6 normally digs into the field, and moreover, it is a field scene where the machete claw 5 performs the tilling function. In contrast to digging in and crushing soil, ordinary claws 6
It only has the effect of digging the tip into the soil and does not have a tilling effect.

Therefore, when the rotary claw shaft 1 is rotated to operate the machete claws 5 and the regular claws 6 in order to perform tillage work, the machete claws 5 are used to till the field, and as a result, due to the impact of digging into the field. We are trying to generate a forward dash force on the body of tractor A, but the normal claw 6 grips the field surface with its tip, and the rotation radius of the normal claw 6 is half the rotation radius of the machete claw 5. , Therefore, the tangential speed of the tip of the normal claw 6 is the machete claw 5
Since this is half the tangential speed of the tip of the machete claw 6, the locking force caused by the tip of the machete claw 6 biting into the field is a braking force against the dashing force, which is the horizontal component of the reaction force of the tip of the machete claw 5 biting into the field. It acts in the direction of force and reduces the dashing force of the aircraft, thereby preventing the aircraft from dashing.

a shows the rotation locus of the machete claw 5, and b shows the rotation locus of the normal claw 6.

In addition, according to this invention, since it is configured as described above, the forward dash force of the machine body that occurs during plowing is alleviated, and the driving operation can be performed smoothly, ensuring work safety and improving work efficiency. This has the effect of streamlining the process.

[Brief explanation of the drawing]

FIG. 1 is a side view of a tractor having the proposed structure, FIG. 2 is an enlarged side view of the main parts, and FIG. 3 is a cross-sectional view taken along line I-I in FIG. 2. B: Cultivation device; 1: Rotating claw shaft, 2: claw holder, 5: machete claw, 6: normal claw.

Claims (1)

[Scope of utility model registration request] A machete claw and a regular claw are attached together to a rotary claw shaft via a claw holder, and the normal claw is curved in the opposite direction to the hatchet claw, and the rotation radius of the normal claw is the same as that of the hatchet claw. A tilling claw structure in a tiller, characterized in that the tiller claw structure is configured to be approximately half of the rotation radius of the tiller.