JPH0520081Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a tilling claw that is detachably attached to the tilling shaft of a rotary tilling device, and more specifically, it relates to a tilling claw that can be used in both forward and reverse rotations and is capable of forward and reverse tilling. be.

Conventionally, with this type of tilling claw, when switching the tilling operation between forward rotation and reverse tilling, the fasteners fixing the claw are loosened and the attachment angle of the claw relative to the tilling shaft, that is, the driving angle of the claw is corrected. After changing to rotor rotation or reverse rotation, the fasteners were tightened again to fix the claws to form a forward rotor or reverse rotation rotor.

By the way, the work of changing the mounting angle of the tilling claws is generally done in the field, but it takes a lot of effort and time to change the mounting angle of all the claws, and this reduces the efficiency of tilling work. There was a problem that there was a significant decrease in

This invention was devised in view of the above-mentioned problems, and its purpose is to create a tilling claw that can perform forward tilling and reverse tilling by simply switching the direction of rotation of the tilling shaft of the rotary tilling device. Our goal is to provide the following.

In order to achieve the above object, this invention is a tilling claw consisting of a blade body and a mounting part for attaching this blade body to a tilling shaft, and the blade body is made of a solid steel plate so that the center of the blade in the front and back direction is fixed. The blade is formed into a convex arc shape that is almost symmetrical from the vicinity of the attachment part toward the tip with respect to the line part, and the tip part is curved, and vertical blades are provided on both front and rear edges of the blade body part, and the attachment part is The tilling claw is formed to be inclined with respect to the center line portion so as to be inclined toward one vertical blade side.

Hereinafter, one embodiment of this invention will be described in detail using the drawings.

1, 2, and 3 show a plan view, a side view, and a front view of the tilling claw A according to this invention.

The tilling claw A has a blade portion 1 formed solidly from a flat steel plate.
and a mounting part 2 integrally connected to the upper part of the blade part 1, and can be freely attached to and detached from the tilling shaft 4 through a mounting mechanism (not shown) through a mounting hole 3 provided in the mounting part 2. It is now being installed on

The tilling claws A are formed in a convex arc shape that is substantially symmetrical with respect to the center line S in the front-rear direction from the attachment part 2 toward the tip, and have vertical blades 5, 5' on the front and rear edges in the rotation direction, From approximately the middle in the radial direction of rotation to the tip, as shown in FIG. In addition, the tip portion is curved toward the convex curved surfaces 6, 6' with a radius of curvature r to form the blade body 1, and the blade body 1 is oriented squarely with respect to the center line S in the front-rear direction. Direction of rotation (direction of arrow a in Figure 1)
The mounting part 2 is formed to be inclined with an appropriate advance angle θ, and the driving angle of the front and rear vertical blades 5, 5' is set, so that the driving angle of the vertical blade part 5 on the normal rotation side is relatively small. The driving angle of the vertical blade portion 5' on the reverse side is relatively large.

In addition, reference numeral R in FIG. 1 is the rotation radius from the rotation center O of the tilling shaft 4 to the tip of the claw when the tilling claw A rotates forward and backward. Therefore, the tilling claws A always perform the tilling work under the above rotation radius R.

According to the above configuration, during forward tilling, the vertical blade 5 on the forward tilling side, that is, on the front side in the front-rear direction (left side in FIG. 1), acts at the forward driving angle, and during reverse tilling, the vertical blade 5 acts at the forward driving angle. Since the vertical blade 5' on the side where the machine moves, that is, on the rear side in the longitudinal direction (right side in Figure 1), acts at a relatively steep driving angle, when rotating forward, it will move in the direction of movement of the aircraft (arrow b in Figure 1). On the other hand, the vertical blade 5 of the blade 1 that rotates clockwise in Figure 1 tends to dig into the field due to the driving force of the machine, but the vertical blade 5 with a relatively gentle driving angle does not dig into the field quickly. Instead, it gradually sinks in, allowing for good tillage. When rotating in reverse, it rotates counterclockwise in Figure 1, and the vertical blade 5' tends to run away from the field, but the vertical blade 5', which has a relatively steep driving angle, bites well and works well even in reverse. You can cultivate the land.

Moreover, in the above-mentioned embodiment, since the blade part 1 is formed in the symmetrical shape of a solid flat steel plate, the amount of soil movement during tilling is large during both the normal rotation and the reverse rotation as described above, making it difficult to turn over and bury the soil. By doing this effectively, it is possible to improve tillage efficiency, and it also has the effect of being easy to manufacture and having high strength.

As is clear from the above, according to the configuration of this invention, there is no need to change the installation of the tiller claws every time the forward and reverse tilling is switched, and the tilling shaft can be switched between forward and reverse tilling by simply changing the direction of rotation of the tilling shaft. Any tillage work can be done.

It should be noted that this invention is not limited to the above-mentioned embodiments, and can be implemented in modes other than the above-mentioned embodiments.

[Brief explanation of the drawing]

The drawing shows an example of this invention.
Figure 1 is a plan view of the tiller, Figure 2 is a side view, Figure 3 is a side view, and Figure 3 is a side view of the tiller.
The figure is a front view, and FIG. 4 is a cross-sectional view taken along the - line in FIG. 1. Explanation of the symbols representing the main parts of the drawing, 1...
Blade body part, 2...Mounting part, 5, 5'...Vertical blade.

Claims (1)

[Scope of utility model registration request] In a tilling claw consisting of a blade body and a mounting part for attaching this blade body to the tilling shaft, the blade body is made of a solid steel plate and is oriented from near the mounting part to the tip with respect to the center line in the front and rear direction. The blade body is formed into a substantially symmetrical convex arc shape and has a curved tip, and vertical blades are provided on both front and rear edges of the blade body, and the mounting portion is tilted toward one vertical blade side. A tiller claw formed at an angle to the line.