JP2731728B2 - Rotary tilling equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting a tilling claw of a rotary tilling apparatus.

[0002]

2. Description of the Related Art Conventionally, as a technique for arranging tilling claws of a rotary tilling apparatus on the same plane, Japanese Utility Model Publication No. 4-454 is used.
No. 42 and “Working Machine for Agricultural Tractor” Toshio Murata
There are known literature such as authors.

[0003]

A rotary tilling device is attached to the rear of a tractor or a cultivator, and the tilling operation is performed by the rotary tilling device. However, the simple tilling operation is monotonous, and is difficult in a vast field. They want to complete the tilling work as soon as possible, such as when tilling work is performed on a contract basis. Therefore, if the running speed is shifted to a higher speed side to increase the running speed, the tilling speed is increased. However, although the tilling speed increases, the cultivation pitch becomes coarse, and a problem occurs that uniform tilling cannot be performed. As described above, when the traveling speed is increased, the tilling pitch becomes coarse. Therefore, in order to solve the problem and obtain the same tilling pitch as at the time of low-speed traveling, the speed of the PTO transmission is changed and the rotation speed of the rotary tilling device is increased. Must also be raised. However, when the speed of the PTO transmission is changed at a high speed, the load increases, and there is a limit to increasing the rotation speed by the PTO transmission. Therefore, it is very difficult to match the running speed with the PTO rotation. Therefore, the present invention seeks to provide a tilling device that can perform a good tilling operation without changing the rotation speed of the rotary tilling device even when the traveling speed of the tractor is increased.

[0004]

Means for Solving the Problems In order to solve the above problems, the present invention is configured as follows. At the tilling claw mounting portion on the tilling claw shaft of the rotary tilling device, the mounting portions of the four tilling claw bases are located on substantially the same plane, and are arranged in a plurality of rows on the tilling claw shaft, and each row of tillage The nails are alternately positioned to the right and left, and the right
The rudder 12b is out of phase by 180 °
And the left-handed tillage nail holders 12a
180 ° out of phase, right holder
The phase difference θ1 between 12b and the holder 12a facing left is 90 °
It is not a value other than and is not installed at equal intervals, the mounting angle difference of each tilling nail is set alternately large and small, a phase difference is provided between the tilling nails of the next row, and the tilling nail shaft for attaching the tilling nails It is a holder type.

[0005]

By using such means, even if the running speed is increased during the tilling work, the crushing property does not become coarse and there is a phase difference between adjacent tilling claws. Since the direction of curvature of the tilling claw is alternately left and right on the same plane without cutting, the soil can be tilled evenly without inclining and rising when the soil is inverted.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention; 1 is a side view of a rotary tillage device, FIG. 2 is a partial plan view of the same, and FIG. 3 is a development view of a tillage claw shaft, FIG.
5 is an enlarged rear view of the cultivating claw axis, FIG. 5 is a view taken in the direction of arrow X in FIG. 4, FIG. 6 is a side view showing a state in which six cultivating claws are mounted on one plane, and FIG. 8 is a sectional view, FIG. 8 is a side view of the holder 12b, FIG. 9 is a rotary rear view when four tilling claws are mounted on one plane, and FIG. 10 is a side view showing a mounting positional relationship of the holder on the tilling claw shaft. .

An embodiment in which a tilling claw of the present invention is mounted on a side drive type rotary tilling device mounted on a tractor will be described with reference to FIGS. The rotary tilling device arranges a gearbox 1 in the center, protrudes an input shaft 2 forward from the gearbox 1, and connects the input shaft 2 to a PTO shaft of a tractor via a universal joint or a drive shaft to supply power. I try to tell. The beams 3.3 project from both sides of the gear box 1 and support plates 4.4 are fixed to both sides of the gear box 1, and lower links are pivotally connected to the front ends of the support plates 4.4. The front end of the depth frame 5 is pivotally supported at the rear end, and a support stay 6 is interposed between the front side of the support plates 4 and 4 and the mast 7, and the front end of the mast 7 It forms the pivot of the top link.

An upper portion of the chain case 10 and an upper portion of the side support are fixedly provided at the outer ends of the beams 3, and a tilling claw shaft 12 is horizontally suspended between the lower portion of the chain case 10 and the lower portion of the side support 11. ing. Tilling claw shaft 1
2, a large number of tilling claws 13.
13 are radially planted in side view, and the tillage claw 1
3 is covered by a tillage cover 20, and both sides are covered by side covers 21. A rear cover 22 is connected to a rear end of the cultivation cover 20. The tilling claw shaft 12 is connected to the input shaft 2 by the bevel gears 23 and 24 in the gear box 1, the transmission shaft 25 in the beam 3, and the sprockets 26 and 2 in the chain case 10.
7. Driven through the chain 28, the tilling claws 13
.. Can be tilled by being rotated.

Are fixed in front of the middle of the beam 3, and a support rod 15 is laid on the front end of the plate 14, 14 The mounting plates 16 are fixed to the rod 15 so as to be adjustable in position. The upper part of the cutting blade 17 is fixed to the mounting plate 16 so that the height can be adjusted. In this embodiment, four cutting blades 17 are mounted, but the number of cutting blades 17 to be mounted is not limited. The cutting blade 17 has an upper portion formed in a straight line, a lower portion curved backward, and arranged so that the lower portion of the cutting blade 17 overlaps with the front of the rotation locus A of the tilling nail 13 in a side view. I have.

In a front view, the cutting blade 17 is disposed between the tilling claws 13 so that the cutting blade 17 and the tilling claws 13 do not interfere when the tilling claw shaft 12 is rotated. However, the interval between the cutting blade 17 and the tilling claw 13 is narrowed so that the remaining tillage cannot be performed. However, the cutting blade 17 is not provided between the tilling nails 13 and all of the tilling nails 13,
In the case where there are six cultivating claws 13 in one row (one plane) described later, as shown in FIG. 2, between the rows at both ends and the inner row, and two rows from the cutting blade 17, as shown in FIG. Provided.
In the case where four tilling claws 13 are provided in one row, as shown in FIG. 9, the tilling claws 13 are provided between the rows at both ends and the inner row and three rows from the cutting blade 17. The cutting blade 17
In this embodiment, four are provided symmetrically, and the number is not limited. The cutting blades 17 may be provided in two or three rows by providing the cutting blades 17 between the second and third rows from both sides. By providing the cutting blade 17, the tilling traveling speed can be increased.

The rear surface of the cutting blade 17 and the till cover 2
0, a partition plate 19 is provided, and the partition plate 19 is fixed to the back surface of the cutting blade 17. The distance between the upper portion of the partition plate 19 and the inner surface (rear surface) of the cultivation cover 20 is extremely small. Board 1
9 is brought close to the tillage cover 20 so that straw, weeds and the like do not enter and become entangled.

Next, the mounting structure of the tilling claw 13 which is a main part of the present invention will be described. When the tiller of the rotary tiller is mounted on the tiller shaft, a plurality of disc-shaped flanges are fixed to the tiller shaft, and one or more tillers are radially fixed to the flange. On the same plane perpendicular to the axis, there is a holder type in which the phase is changed one by one, and a U-shaped or square pipe-shaped holder is radially arranged on the tilling claw axis in a side view. Generally, two or two tilling claws are provided.
In the drawing, a plurality of tilling claws 13 (four or six in the present embodiment) are provided on the same plane perpendicular to the cultivating claw shaft 12 by a holder type, and even when the high-speed running is performed, The rotary tilling device which does not need to increase the rotational speed of the rotary tilling is described.

First, a description will be given of a configuration in which six pieces are provided on the same plane (hereinafter, one row). As shown in FIGS. 2 to 8, both end portions around the cultivating claw shaft 12 are shown in FIGS. 3, 4, and 5.
As shown in the figure, the holders 12a
12a are protruded in the radial direction, and six holders 12a, 12b... Are protruded in a row between the rows at both ends, as shown in FIGS. Claw shaft 13
Are located substantially on the same plane. The holders 12a, 12a, 12a and the holders 12b, 12b, 12b are each protruded in the radial direction from the cultivating claw shaft 12 every 120 °, and the adjacent holders 12a and 12b are alternately arranged, and The mounting angles of the holders are not equal. That is, the mounting angle difference between the adjacent holders 12a and 12b is set to be large and small alternately.

Then, the holder 12b is attached to the holder 1
As shown in FIG. 8, in order to protrude in the same plane as approaching 2a, the center side of the holder 12a is cut obliquely as a notch holder 12b, and the cutout portions 12c and 12d at both ends are formed on the front or rear surface of the holder 12a. By fixing by contact, the mounting interval between the holder 12a and the holder 12b is different in angle on both sides. As shown in FIG. 3, the holders 12a, 12b,... Mounted in this manner are provided with a phase difference such that the mounting angles are slightly different for each row, and the center lines of the holders are coincident in side view. Radiation is set so as not to occur, and at the same time, the tilling claws 13 are prevented from being driven into the field scene, thereby dispersing the force.

Then, the inner holder 12a other than both ends is provided.
· 12b · · · tillage claw 13, 13 · · ·
・ ・ Attached, the tip is curved right or left to turn the soil after cutting into the tilling claw 13,
The holders 12a, 12b,... Are mounted on a row of holders 12a, 12b,.

Next, FIG. 9, FIG. 10, one row of the present invention
The configuration in which the four tilling claws 13 are mounted on the vehicle will be described. Mounting structure of tilling claws at both ends is the same as defined above, and mounting arrangement of the tilling claws inside the left of the holder 12a in the tilling claws shaft 12
12a and right-side holders 12b and 12b are protruded on the same plane so that the mounting portion 13a of the tilling claw shaft 13 is located on substantially the same plane, and the left-side holders 12a and 12a and the right-side the holder 12b · 12b are each 180 ° out of phase, the phase difference θ1 leftward holder 12a and the right of the holder 12b is 90 °
Are not attached at equal intervals, and the phase differences θ1 and θ4 between the holders 12a and 12b in adjacent rows are not set.
Are also set to be different so that the tilling nail is not cut into the field at the same time.

The respective holders 12a, 12a
.. are mounted so that the bending direction of the cultivating claws is alternately directed to the left and right, that is, the cultivating claws are directed to the left and the tilling claws are directed to the right.
And, the phase difference θ2 (phase difference with) and θ3 (phase difference with) of the adjacent tilling nail are 90 °.

[0018]

As described above, the present invention has the following advantages. First, since four tilling claws are arranged on the same plane perpendicular to the tilling claw axis,
The tillage pitch no longer became coarse even when the running speed increased. Second , each row of tilling claws
Right and left facing alternately, and right tilling
The nail holders 12b and 12b have 180 ° phase respectively.
Offset, left tilling claw holders 12a, 12a
Are 180 ° out of phase with each other.
The phase difference θ1 between the holder 12b and the holder 12a facing left is
Values other than 90 ° are not installed at equal intervals,
The mounting angle difference between the multiple tilling claws on the surface is
Because the bending direction of the tine is alternating,
After the difference between the mounting angle with the tillage claw is small and facing the opposite side
As the tilling claw of the, the cutting force in the traveling direction is reduced,
While arranging four tilling claws on the same plane,
Source can be reduced. Thirdly, since there is a phase difference between the tilling nails of the adjacent row, they are not driven into the field at the same time, and the power is not dispersed and a large load is applied.

[Brief description of the drawings]

FIG. 1 is a side view of a rotary tillage device.

FIG. 2 is a plan view and a partial cross-sectional view of the same.

FIG. 3 is a development view of a tilling claw shaft.

FIG. 4 is an enlarged rear view of a tilling claw shaft.

FIG. 5 is a view taken in the direction of the arrow X in FIG. 4;

FIG. 6 is a side view showing a state in which six tillage claws are mounted on one plane.

FIG. 7 is a sectional view taken along the line YY in FIG. 4;

FIG. 8 is a side view of the holder 12b.

FIG. 9 is a rear view of the rotary when four tilling claws of the present invention are mounted on one plane.

FIG. 10 is a side view showing the mounting positional relationship of the holder on the tilling claw shaft of the present invention.

[Explanation of symbols]

A rotation locus 12 tillage claw shaft 12a left-handed holder 12b right-handed holder 13 tillage claw 13a mounting part

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Toko Takahashi 1-32 Chayacho, Kita-ku, Osaka, Osaka Inside Yanmar Diesel Co., Ltd. (72) Takashi Hirano 1-32 Chayacho, Kita-ku, Osaka, Osaka No. Yanmar Diesel Co., Ltd. (72) Inventor Masaru Yamamoto 1-1-1, Ishiba, Matsumoto-shi, Nagano Pref. Inside Matsumoto Plant, Ishikawa Shima Shibaura Machinery Co., Ltd. (72) Mitsutoshi Miyazaki 1-1-1, Ishiba, Matsumoto-shi, Nagano Prefecture No. 1 Ishikawa Shima Shibaura Machinery Co., Ltd. Matsumoto Plant (56) References Japanese Utility Model Sho 52-134501 (JP, U) Japanese Utility Model Sho 58-182603 (JP, U)

Claims (1)

(57) [Claims] Claims: 1. In a tilling claw mounting portion on a tilling claw shaft of a rotary tilling device, mounting portions of four tilling claw bases are located on substantially the same plane, and are arranged in a plurality of rows on a tilling claw shaft. Each row of the tilling nails are alternately positioned rightward and leftward, and the rightward tilling nail holders 12b
180 ° out of phase with each other.
The phase of each of the sliders 12a and 12a is shifted by 180 °.
And the right-hand holder 12b and the left-hand holder 1
The phase difference θ1 of 2a is a value other than 90 °, and
It is not mounted, and the mounting angle difference of each tilling nail is set alternately in large and small, a phase difference is provided between the tilling nails in the next row, and the tilling nail shaft for attaching the tilling nail is a holder type. Rotary tilling equipment.