JPS5818641Y2 - Kounsouchi - Google Patents

Description

[Detailed description of the invention] The purpose of the invention is to enhance the soil crushing effect during tillage work.

A movable shield body or a fixed shield body is installed behind the tillage cover to promote cutting, impact, and crushing of the tillage cover. Conventional equipment has disadvantages in that it is difficult or requires more working time to make the crushed soil (30 to 50 mm) into an appropriate size of soil clod (10 to 20 mm).

In the present invention, a shield body consisting of a large number of circular arc hawks arranged along an arc similar to the movement trajectory of the claws of the rotary tilling unit is connected to the tilling unit side plate 5b of the tilling cover, and the end of the shield body is connected to the tilling unit side plate 5b of the tilling cover. To provide a tillage device which is always kept at an acute angle to cultivated land.

The present invention will be explained below based on the embodiment shown in the same cylinder.

A is a running part of the tiller main body, B is a tilling device, and the tilling device B includes a tilling case 1, 1/, a tilling frame 2, a tail wheel support shaft 3,
It consists of a tail wheel 4, a tilling case 1, 1', a tilling cover 5 fixed to the tilling frame 2, and a rotary tilling section 6, and the tilling section 6 has a claw shaft T and a large number of tillers planted on the claw shaft 7. The structure of the claw 8 is similar to that of a known tiller.

The tilling cover 5 includes a tilling section upper cover 5a and a tilling section side plate 5b.
The upper end extensions of the side plates 5b are bent and welded to both sides of the upper cover 5a, or the side plates 5b are formed by bending the upper end extensions of the upper cover 5a and integrated.

A concentric circle with the motion trajectory S of the tip of the tilling claw 8 buttoned on the tilling part 6 [
A large number of arcuate hawks 9, which are arranged in an arcuate shape located slightly outward from the locus of motion S with the striking claw shaft 7 as the center, are fixed to each other by horizontal rods 10, 10 and integrated. A shield body 11 is configured.

The shield body 11 has a tightening plate 1 attached to the arc hawk 9 on both needle sides.
2, weld the tightening bolt 13 to the tightening plate 12 and plant it, and after passing the tightening bolt 13 through the elongated hole 14 bored in the side plate 5b of the tillage cover 5, attach the tightening bolt 13 to the end thereof. Tighten the nut 15.

During plowing work, the shield body 11 moves the bolt 13 in the long hole 14 in an arcuate direction to adjust the position of the end edge 11a of the shield body 11 according to the working conditions.

The edge 11a can be used for any plowing depth, as well as the shield body 11.
By rotating around the claw axis 1, it is possible to set it in the tilled scattered soil at an appropriate distance from the uncultivated land surface E, and to keep the angle θ with respect to the cultivated land at an acute angle, the rake angle shall be.

Note that, regardless of the position adjustment of the shield body 11, the upper end portion of the shield body 11 is always located within the side plate 5b of the tilling cover 5 in side view, and the upper end faces the upper cover 5a of the tilling cover 5.

Therefore, among the earth clods thrown out by the rotation of the claws, large ones are pushed upward along the inner surface of the shield body 11 and fall under their own weight near the top, while small ones are thrown away by the shield body 11.
The shield body 11 is directly thrown behind the shield body 11 without being pushed upward along the inner surface of the shield body 11.

Among the clods of soil that fell due to its own weight, small ones are located in the gaps between the shield bodies 11 as the machine moves forward, and remain in the field where they fell, and are thrown onto the field by rotating the claws. Small clods that pass through the gaps between the shield bodies 11 accumulate, but larger ones cannot pass through the gaps and accumulate inside the rotating claws 8.
That is, within the motion trajectory S of the tip of the nail.

As a result, while being subjected to secondary cutting and impact due to collision with the rotating claws, it is carried around by the claws along the inner surface of the shield body 11 and the inner surface of the tilling cover 5, and is thrown forward of the tilling cover 5, where it is subjected to the tilling action again. .

Thus, after being crushed, the small clods pass through the mutual spacing of the shield bodies 11 and are deposited behind the shield bodies 11, and only the large clods are crushed again.

By extending the button further from the edge 11a of the shield body 11 and curving it outward to form a bent curved part 11b (see FIG. 3), the strength of the tip of the shield body 11 is increased and it can be used to prevent pebbles, crushed soil, etc. Although it is advantageous to be able to prevent deformation of the tip portion due to a collision between the two ends, the object of the present invention can also be achieved with a shape as shown in FIG. 1 in which the bent curved portion 11b is omitted.

Note that the shield body of the present invention also functions as a cover for the tilling area and serves as a safety measure for workers.

The present invention consists of a shield body 11 consisting of a large number of arcuate hawks arranged along an arcuate line that approximates the motion trajectory S of the tiller claws.
is connected to the tilling cover 5, so the soil clods released by the rotation of the claws are pushed upward along the inner surface of the arc-shaped shield body and fall under their own weight near the top, so that they are secondary to the tilling claws. A sufficient soil crushing effect can be achieved through forced cutting, impact, and agitation.

In addition, since the angle of the edge of the shield body with respect to the cultivated land is an acute angle, it becomes a rake angle to the soil clod, pushing the soil clod upward and causing it to fall under its own weight, making the soil clod more effective at crushing.

Furthermore, since the shield body can change its vertical position along an arc line that approximates the motion trajectory of the tilling claws, the position of the shield body can be changed in response to changes in working conditions such as changes in tillage depth. In addition, the tip of the shield body maintains the desired acute angle with respect to the cultivated land, maintains an arcuate shape that approximates the locus of motion of the tilling claws, and allows the movement of the tilling claws without hindering the rotation of the tilling claws. This is to always maintain the best working conditions for the clods thrown out by the rotation of the claws in the vicinity of the locus, and to always improve the above-mentioned clod crushing effect.

[Brief explanation of drawings]

FIG. 1 is a side view of a tiller implementing the present invention. FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1. FIG. 3 is a partial original drawing showing the main parts. 1.1'...Tilling case, 2...Tilling frame, 5...Tilling cover, 6...
Rotary tiller, T...nail shaft, 8...
Cultivating claw, 9... Arc hawk, 11... Shield body, S... Motion trajectory of the cultivating claw.

Claims (1)

[Scope of utility model registration request] A shield body 11 composed of a large number of circular arc hawks 9 arranged along an arc approximating the motion trajectory S of the tilling claws 8 of the rotary tilling unit 6 in the tilling device 3 is attached to its edge 11a.
The movement trajectory S of the tilling claws is made in a state where the tiller is brought close to the surface of the uncultivated land at an appropriate distance and the angle with respect to the cultivated land is an acute angle.
A tilling device characterized in that it is connected to a tilling section side plate 5b of a tilling cover 5 so that its vertical position can be freely changed along an arc line that approximates.