JP3537795B2 - 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 tilling claw mounting structure for a rotary tilling apparatus.

[0002]

2. Description of the Related Art Conventionally, a rotary tilling device is attached to a rear part of a tractor or a cultivator, and a tilling operation is performed by the rotary tilling device.
In addition, it is hoped that the tillage work will be completed as soon as possible in a vast field or under contracted tillage. for that reason,
If the running speed is shifted to a high speed side to increase the running speed, the tilling pitch becomes coarse and uniform tilling cannot be performed.

[0003]

As described above, as the running speed increases, the tilling pitch becomes coarse. Therefore, in order to obtain the tilling pitch as in the case of low-speed running, the speed of the PTO transmission is changed and the rotary speed of the rotary is increased. Must also be raised. However, a high-speed shift increases the load, and there is a limit in increasing the speed, and it is very difficult to match the running speed with the PTO rotation. Therefore, an object of the present invention is to provide a tilling device capable of performing a good tilling operation even when the traveling speed is increased without changing the rotation speed of the rotary tilling device.

[0004]

Means for Solving the Problems As means for solving the above problems, the present invention is configured as follows. Attachment part 13a of tilling nail 13 to tilling nail shaft 12
A plurality of holders 12a and 12b protruding in the radial direction.
In the rotary tillage device, the holders 12a and 12
b to project in the same plane.
Notch portions 12c and 12d are provided in the
Minutes 12c and 12d are placed in front of or behind the other holder 12a.
And fixed to the surface, and the adjacent holder 12a on the same plane
So that the mounting angle between the
The holders 12a and 12b are set alternately in large and small, and are on the same plane.
So that the bending direction of the tip of the tilling claw 13 faces in the left-right direction
And the holders 12a
2b is set so that the mounting angle is different for each row, and
Between the tilling claw shaft 12 and
Rotary tilling device .

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The problems and configurations to be solved by the present invention are as described above. Next, an embodiment of the present invention shown in the attached drawings will be described. 1 is a side view of the rotary tilling apparatus, FIG. 2 is a partial sectional view of the same plan view, FIG. 3 is a developed view of the cultivating claw axis, FIG. 4 is an enlarged rear view of the cultivating claw axis, and FIG. 6 is a side view showing a state in which six tilling 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, and FIG. FIG. 10 is a side view showing the mounting positional relationship of the holder on the tilling claw shaft when four are mounted on one plane.

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. Gearbox 1
The beams 3.3 project from both sides from the side, the support plates 4.4 are fixed to both sides of the gearbox 1, and the front ends of the support plates 4.4 project pins that pivotally connect the lower link. The rear end pivotally supports the front end of the depth frame 5,
A support stay 6 is interposed between the front sides of the support plates 4 and 4 and the mast 7, and a front link of the mast 7 constitutes a pivot portion of a top link.

An upper part of the chain case 10 and an upper part of the side support are fixedly provided at the outer ends of the beams 3, and a tilling claw shaft 12 is laterally mounted between the lower part of the chain case 10 and the lower part of the side support 11, so that the tilling claw is provided. A large number of tilling claws 13, 13... Made of ratchet claws of the present invention are radially implanted on the shaft 12 in a side view, and the rotation locus A above the tilling claws 13 is covered by a tilling cover 20. Is covered by a side cover 21, and a rear cover 22 is connected to a rear end of the tillage cover 20. The cultivating claw shaft 12 is connected to the input shaft 2 by a bevel gear 23.2 in the gear box 1.
4, driven by the transmission shaft 25 in the beam 3, the sprockets 26 and 27 in the chain case 10, and the chain 28 to rotate the tilling claws 13 so that tilling can be performed.

A plate 14 is fixedly provided in front of the intermediate portion of the beam 3, and a support rod 15 is laid on the front end of the plate 14, 14 ... Are fixed to the mounting plate 16 so as to adjust their positions.
The upper part of 7 is fixed so that height adjustment is possible. In this embodiment, four cutting blades 17 are mounted.
Is not limited. The cutting blade 17 has an upper portion formed in a straight line, a lower portion curved backward, and a lower portion of the cutting blade 17 in a side view.
Are arranged to overlap at the front of

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 with each other when the cultivating claw shaft 12 is rotated. However, the interval between the cutting blade 17 and the tilling claw 13 is reduced so that the remaining tillage cannot be performed. However, the cutting blade 17 is not provided between the tilling claws 13 and all of the tilling claws 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, 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 the present embodiment, four are provided symmetrically, and the number is not limited. Note that the cutting blades 17 may be provided between the second and third rows from both sides and provided in two or three rows. 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 disposed, 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 (back 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 disk-shaped flanges are fixed to the tiller shaft, and one or more tillers are fixed radially to the flange, and a tiller nail. 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 present invention, a plurality of tilling claws 13 (four or six in this embodiment) are provided on the same plane perpendicular to the cultivating claw shaft 12 in a holder type, and even when the cultivator is driven at high speed, the tilling claw 13 is rotated. This makes up a rotary tilling device that does not require increasing the rotation speed of the rotary tilling.

First, a description will be given of a case in which six units are provided on the same plane (hereinafter, one line). As shown in FIG. 2 to FIG. 8, both ends around the cultivating claw shaft 12 are holders 12a, 12a.
2a are projected in the radial direction, and six holders 1 are arranged in a row between the rows at both ends as shown in FIGS.
Are protruded so that the mounting portion 13a of the tilling claw 13 is positioned substantially on the same plane. The holders 12a, 12a, 12a and 12b
12b and 12b are the tilling nail shafts 12 every 120 °.
The holders 12a and 12b are arranged so as to protrude more in the radial direction, 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, the center side of the holder 12a is notched obliquely to form a notch holder 12b, and the notch portions 12c and 12d at both ends are formed on the front or rear surface of the holder 12a. By abutting and fixing, the mounting interval between the holder 12a and the holder 12b has a different 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 coincide in a side view. Radiation is set so as not to occur, and at the same time, the tilling claws 13 are prevented from entering the field scene, thereby dispersing the force.

Then, an inner holder 12a other than both ends is provided.
· 12b · · · · tillage claw 13 · 13 · consisting of Nata claw
・ ・ Attached, the tip is curved right or left in order 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, an embodiment in which four tilling claws 13 are mounted in a line will be described with reference to FIGS. The mounting configuration of the tilling claws at both ends is the same as described above. The mounting configuration of the tilling claws on the inner side is such that the holders 12a and 12a and the holders 12b and 12b project from the
3 are located substantially on the same plane, and the holders 12a and 12a and the holders 12b and 12
b are 180 ° out of phase with each other.
a and the holder 12b have a phase difference θ1 other than 90 °, and are not mounted at equal intervals.
The values of the phase differences θ1 and θ4 between the 2a and the holder 12b are also set to be different so that the tilling claws are not cut into the field at the same time.

The respective holders 12a and 12a
The brooms are equipped with tilling claws 13 and 13, and are mounted so that the bending direction of the cultivating claws is turned right and left alternately, that is, the cultivating claws 2) are facing left and the cultivating claws 3) are facing right. I have.
The phase difference θ2 (3) and 4) between the adjacent tilling nails and the phase difference θ3 (5) and 6) are 90 °.

With such a configuration, even when 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 curved direction of the tilling nails is alternately left and right on the same plane without cutting, the soil can be tilled evenly without swelling when the soil is inverted.

[0018]

As described above, the present invention has the following advantages. That is, the tilling nail 1 is
A plurality of holders 12a and 1 for mounting the third mounting portion 13a
Rotary tilling device with 2b protruding in the radial direction
Therefore, the holders 12a and 12b are projected on the same plane.
At least, the notch 12
c · 12d, and the notched portions 12c · 12d
Fixing by applying to the front or back of the holder 12a
By bringing the holder 12b closer to the holder 12a
It is possible to protrude on the same plane, and
Angle between adjacent holders 12a and 12b
Can be set alternately so that the intervals are not the same
It was noh. In addition, a plurality of tilling claws are arranged in a plurality of rows in such a manner that a mounting portion of a row of cultivating claw bases is located on substantially the same plane on a cultivating claw shaft of a rotary tilling device, and each row of cultivating claws is a tip. Are arranged so that the curved directions of the parts are alternately turned to the left and right, and are set alternately in large and small so that the mounting angle difference of each row of tilling nails does not become equidistant, and the phase difference between the tilling nails of the next row First, a plurality of tilling claws are arranged in a plurality of rows so that the mounting portions of a row of tilling claw bases are located substantially on the same plane, so that even if the traveling speed increases, The pitch no longer becomes coarse. Secondly, since the tilling claws in a row were arranged so that the curved direction of the tip part turned left and right alternately, and the mounting angle difference between the tilling claws in a row was set to be large and small alternately so as not to be at equal intervals, The cutting force in the traveling direction of the tilling claw with a small difference in the mounting angle is reduced, and the horsepower loss can be reduced. Third, since a phase difference is provided between the tilling nails of the adjacent row, the adjacent tilling nails do not cut into the field at the same time, and the load 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 tilling 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 are mounted on one plane.

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

[Explanation of symbols]

A rotation trajectory 12 Tilling claw shaft 12a ・ 12b holder 13 Tillage claws 13a Mounting part

──────────────────────────────────────────────────続 き Continuing on 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 City, Nagano Prefecture Ishikawa Shima Shibaura Machinery Co., Ltd. Matsumoto Plant (72) Inventor Mitsutoshi Miyazaki 1-1-1, Ishiba, Matsumoto City, Nagano Prefecture No. 1 Ishikawa Shima Shibaura Machinery Co., Ltd. Matsumoto Factory (56) References JP-A-8-9 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) A01B 33/12 A01B 33 /14

Claims (1)

(57) [Claims] An attachment portion of a tilling claw on a tilling shaft.
a. Multiple holders 12a and 12b for mounting a
In the rotary tilling device protruding from the holder, the holder 1
In order to project 2a and 12b on the same plane, at least
Notch portions 12c and 12d are set in one holder 12b.
The notches 12c and 12d are connected to the other holder 12a.
And fix it against the front or rear surface of the
The mounting angle between the holder 12a and the holder 12b is the same interval.
Holder 1 is set alternately so that it does not
The bending direction of the tip of the tilling claw 13 is left and right in 2a and 12b
And the holders in adjacent rows
12a and 12b are installed so that the mounting angle differs for each row.
A rotary tilling device characterized in that a phase difference is provided between the tilling claw shaft 12 and an adjacent row .