JPH0884504A - Cultivating claw of rotary tiller - Google Patents

Abstract

(57) [Abstract] [Purpose] In the tilling claw of the rotary tiller, most of the load is generated when the driving base 4 is driven, and when the tip portion cuts the soil and reverses it, a large load is applied. Does not hang. Therefore, a single Y-shaped branch claw B is formed by setting the driving base 4 to one and the tip to two. However, in the case of the Y-shaped bifurcating claw B, the engaged straw waste, weeds, etc.
Is difficult to come off, and this causes an increase in the tilling load. Therefore, it is configured so that the engaged straw waste, weeds, etc. A can easily come off. [Structure] In a Y-shaped bifurcating claw B, a first curving claw 1 and a second curving claw 2 that are branching portions at the tip are configured, and the second curving claw 2 moves in parallel from the first curving claw 1. As described above, the phases are slightly delayed and they are integrally fixed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for reducing a load applied to a tilling claw so as to increase a tilling speed by a rotary tiller.

[0002]

2. Description of the Related Art Conventionally, a technique related to a Y-shaped bifurcating claw has been known. However, the conventional Y-shaped branch claw B has the drawbacks as shown in FIG. 8, FIG. 9, and FIG. That is, in the Y-shaped branch claw,
There is only one driving base that constitutes the driving part, and there are two starting points from the branch start part. Therefore, when straws and weeds scattered in the soil are first caught in the driving base 4, the Weeds and the like gradually move from the branching start portion 5 to the Y-shaped branching portion, and the straw debris and weeds cannot escape from the plow claws, resulting in a large plowing load.

As shown in FIGS. 8 to 10, straw chips, weeds and the like A engaged as shown in FIG. 8 at the position of the driving base,
As shown in FIG. 9, it moves to the first curved claw portion 1 ′ and the second curved claw portion 2 ′, but the left and right first curved claw portions 1 ′ and the second curved claw portions 2 ′ are evenly engaged. Because they are in line, they cannot escape in either direction. Further, as shown in FIG. 10, even if it moves near the tip of the Y-shaped bifurcating claw, it cannot escape to the left and right, so that a large load is applied to the tilling claw, and the tilling speed becomes slow.

[0004]

However, the Y-shaped bifurcating claw has an advantage. The greatest advantage is that it is the largest in the tiller, and 60 to 70% of the load applied to the tiller is used when driving this part of the driving base 4. The load when the tip of the tilling nail cuts and inverts the soil is the remaining 40 to 30%. Therefore, by setting the part of the driving base 4 on which the load is applied to one,
While the load at the time of driving is small, the number of the first curved claw portion 1 and the second curved claw portion 2 at the tip is two, and the action of cutting or reversing the portion with a small load is to perform the work of two. Therefore, there is an effect that the work can be doubled as plowing work without doubling the load. As a result, the required horsepower can be halved, and it is possible to contribute to the improvement of the tilling speed by this extra horsepower and enable high-speed tilling. Also, the nail seat 12a
Therefore, the manufacturing cost of the tillage claw shaft 12 and the claw seat 12a can be reduced.

Despite the Y-shaped bifurcating claw having such advantages, high-speed tilling is impossible due to the fact that straw debris, weeds and the like A easily accumulate and the load gradually increases as in the above-mentioned prior art. Therefore, the Y-shaped branch claw B improved in this respect is provided.

[0006]

The problems to be solved by the present invention are as described above. Next, the means for solving the problems will be described. Claw seat 12 protruding from the cultivating claw shaft 12
The nail seat insertion portion 3 to be inserted into a is configured as one, and the curved nail portion that bends laterally from the nail seat insertion portion 3 is divided into the first curved nail portion 1 and the second curved nail portion 2. In the Y-shaped branch claw B, which is a book, and which is formed by branching the first curved claw portion 1 and the second curved claw portion 2 in the Y direction in a plan view to the left and right in the axial center direction of the tilling claw shaft 12, The second curved claw portion 2 is formed integrally with the portion 1 with the phase slightly delayed.

[0007]

Next, the operation will be described. Since the Y-shaped branch claw B is configured as in the present invention, the load of the driving base portion 4 is only one, but the first curved claw portion 1 and the second curved claw 1 at the tip end are used. Since part 2 does the work for two, it is possible to work for two with one horsepower.
It is possible to reduce the required horsepower. It is possible to reduce horsepower, but since the tip is cracked in a Y shape, it is difficult for A, such as straw scraps and weeds to come off, and gradually, A, etc.
The problem that high speed plowing cannot be done because the accumulated horsepower increases and the required horsepower increases. By delaying the phase of the second curved claw portion 2 relative to the first curved claw portion 1, the movement of straw debris and weeds A is delayed. You can give direction to the direction and escape. As a result, it was possible to improve the difficulty of pulling out the straw scraps and weeds A, which are defects in the Y-shaped bifurcating claw B, and to reduce the required horsepower. You can drive and cultivate at high speed.

[0008]

EXAMPLES Next, examples will be described. 1 is a side view of the Y-shaped branch claw B of the present invention fixed to a tilling claw shaft 12, FIG. 2 is a perspective view of the Y-shaped branch claw B of the present invention, and FIG.
FIG. 4 is a side view of the Y-shaped branch claw B, FIG. 4 is a plan view of the Y-shaped branch claw B, and FIG. 5 is an initial state of the Y-shaped branch claw B of the present invention in which the straw debris and weeds A are engaged. 6 is a front sectional view showing a middle stage state in which straw waste, weeds, etc. A are engaged with the Y-shaped branch claw B of the present invention, and FIG. 7 is a Y-shaped branch claw of the present invention. FIG. 8 is a front sectional view showing a final state in which A, such as straw and weeds, is engaged with B, FIG. 8 is a front sectional view showing an initial engagement state in a conventional Y-shaped branch claw, and FIG. 9 is a conventional Y-shaped. FIG. 10 is a front cross-sectional view showing the middle-stage engagement state of the mold branch claw, and FIG. 10 is a front-section cross-sectional view showing the final stage engagement state of the conventional Y-shaped branch claw.

In FIG. 1, three pawl seats 12a are projected from the cultivating pawl shaft 12 in the circumferential direction. Conventionally, when fixing 6 tillers, 60 around the tiller shaft 12.
Six nail seats were required every time, but by using the Y-shaped branch nail B as in the present invention, since three nail seats 12a are sufficient, the number of nail seats 12a is reduced by half. As a result, the cost of the welding process, the material cost of the claw seat 12a, and the weight can be reduced.

The three claw seats 12a are arranged at equal intervals of 120 degrees. By arranging the three Y-shaped branch claws B on the three claw seats 12a, the left and right directions of the shaft center can be improved. It is possible to project 6 tillage claws, 3 for each.

2, 3 and 4, the structure of the Y-shaped branch claw B of the present invention will be described. As shown in FIG. 3, since the Y-shaped branch claw B of the present invention can be mounted on the claw seat 12a with one touch, the direction of the claw seat insertion portion 3 is eccentric from the center O1 of the tilling claw shaft 12. There is. The rotation radius a of the rotation locus of the Y-shaped branch claw B is about 245 mm in this embodiment. The opening width b at the tip of the Y-shaped branch claw B is set to about 200 mm with respect to the turning radius a, and the ratio of the turning radius a to the opening width b is about 5.
The opening width b is so wide that it is about 4 pairs.

When the opening width b is wider than the turning radius a as described above, it is further necessary to remove the straw debris, the weeds and the like A engaged in the driving base portion 4. The present invention has been improved by slightly delaying the phases of the first curved claw portion 1 and the second curved claw portion 2 whose ends are branched in order to improve the loss of straw waste, weeds and the like A. The phase shift e is slight, and is about 5 to 6 mm in the embodiment. Then, the first curved claw portion 1 and the second curved claw portion 2 are basically the same as the curved shape in the circumferential direction, and the phases are delayed in the state of being completely translated by 5 to 6 mm. Of.

Therefore, the blade portion 1a and the back portion 1 of the first curved claw portion 1
b and the blade portion 2a and the back portion 2b of the second curved claw portion 2 are also arranged at the phase delay position in a state of being moved in parallel. Further, the first curved claw portion 1 and the second curved claw portion 2 are delayed in phase so that the turning radius a is the same. Further, both the first curved claw portion 1 and the second curved claw portion 2 are configured so that the base thickness c is about 5 mm and the tip thickness d is about 3 mm so that the plate thickness gradually decreases. In the drawings showing the embodiments, the claw seat insertion portion 3 and the first curved claw portion 1 are integrally configured, and the second curved claw portion 2 is welded to the side surface of the first curved claw portion 1. The first curved claw portion 1, the second curved claw portion 2, and the nail seat insertion portion 3 may be separately configured.

As shown in FIGS. 5 to 6, the first curved claw portion 1
The blade portion 1a of the second curved claw portion 2 and the blade portion 2a of the second curved claw portion 2 are phase-delayed, so that a straw scrap, a weed, or the like A is driven into the base portion 4
It engages with the part of the turf and rotates with the tillage claws, along with straw waste and weeds etc. A
The directionality is given to the moving direction of A, such as straw waste and weeds, during the movement of the to the tip of the tillage claw. Conventionally, since the first curved claw portion 1'and the second curved claw portion 2'are at the same protruding position, it is impossible to give directionality to the moving direction of the straw waste, the weed, etc. A. In the case of the present invention, the blade portion 2a of the second curved claw portion 2 is the blade portion 1 of the first curved claw portion 1.
Since it is receding from the portion a, straw A, weeds, etc. A have a directionality in the direction of the second curved claw portion 2, and the direction of the second curved claw portion 2 of the second curved claw portion 2 increases as it goes to the tip of the plowing nail. You can get out in the direction.

[0015]

Since the present invention is constructed as described above, it has the following effects. By configuring the Y-shaped branch claw B, the load on the driving base 4 can be reduced to one, but the first curved claw 1 and the second curved claw 2 at the tip can perform the work of two. As a result, one horsepower can be used to perform work for two horses, and the required horsepower can be reduced. It is possible to reduce horsepower, but because the tip is cracked into a Y shape, it is difficult for A, such as straw scraps and weeds to come off, and A, such as straw scraps and weeds, gradually accumulates and the required horsepower increases. ,
Due to the inability to perform high-speed cultivation, the first curved claw 1
By delaying the phase of the second curved claw portion 2 more than that, it is possible to give directionality to the moving direction of the straw waste, the weeds and the like A, and to escape. As a result, it is possible to improve the difficulty of pulling out the straw scraps and weeds A, which are the problems of the Y-shaped bifurcating claw B, and reduce the required horsepower. You can drive and cultivate at high speed.

[Brief description of drawings]

FIG. 1 is a side view showing a state where a Y-shaped branch claw B of the present invention is fixed to a tilling claw shaft 12.

FIG. 2 is a perspective view of a Y-shaped branch claw B of the present invention.

FIG. 3 is a side view of the Y-shaped branch claw B of the same.

FIG. 4 is a plan view of a Y-shaped branch claw B of the same.

FIG. 5: Straws, weeds, etc. A by the Y-shaped branch claw B of the present invention
FIG. 4 is a front cross-sectional view showing an initial state of the engagement of FIG.

FIG. 6 is a front cross-sectional view showing a middle stage state in which straw waste, weeds and the like A are engaged with the Y-shaped branch claw B of the present invention.

FIG. 7 is a front cross-sectional view showing a final state in which straw waste, weeds, and the like A are engaged with the Y-shaped branch claw B of the present invention.

FIG. 8 is a front cross-sectional view showing an initial engagement state of a conventional Y-shaped branch claw.

FIG. 9 is a front cross-sectional view showing a conventional Y-shaped bifurcated claw in an intermediate engagement state.

FIG. 10 is a front sectional view showing a final engagement state of a conventional Y-shaped bifurcating claw.

[Explanation of symbols]

 A Straws and weeds, etc. B Y-shaped branch claw 1 First curved claw part 2 Second curved claw part 3 Claw seat insertion part 4 Driving base 5 Branch start part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takaaki Sudo 1-32, Chayamachi, Kita-ku, Osaka, Osaka Prefecture Yanmar Agricultural Machinery Co., Ltd. (72) Osamu Nakagawa 1-32, Chaya-machi, Kita-ku, Osaka, Osaka No. Yanmar Agricultural Machinery Co., Ltd. (72) Inventor Toko Takahashi 1-32, Chayamachi, Kita-ku, Osaka Prefecture Yanmar Diesel Co., Ltd. (72) Takashi Hirano 1-32, Chaya-cho, Kita-ku, Osaka City, Osaka Prefecture Yanmar Diesel Co., Ltd. (72) Inventor Masaru Yamamoto 1-1-1, Ishishiba, Matsumoto City, Nagano Ishikawajima Shibaura Machinery Co., Ltd. Matsumoto Factory (72) Inventor, Seizo Goto 3950, Fushida, Kochi City, Kochi Sun Forging Co., Ltd. In-house (72) Inventor Shungo Matsumoto 3950 Fushida, Kochi City, Kochi Prefecture Taiyo Forging Co., Ltd.In-company (72) Inventor Toshiro Moriki, Kochi City, Kochi Prefecture Department of 3950 address the sun metal worker shares in the company

Claims (1)

[Claims] 1. A nail seat insertion portion 3 to be inserted into a nail seat 12a protruding from a cultivating nail shaft 12 is constituted by one, and a curved nail portion curved laterally from the nail seat insertion portion 3 is One curved claw 1
And a second curved claw portion 2, and the first curved claw portion 1 and the second curved claw portion 2 are Y-shaped in a Y shape in a plan view and are branched to the left and right in the axial direction of the tilling claw shaft 12. In the branching claw B, the second bending claw portion 2 is formed integrally with the first bending claw portion 1 with a slight phase delay, and the second bending claw portion 2 is integrally formed.