JP2000116203A - Device for preventing wrapping of grass for rotary tillage tine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily adjust the length of a linear member for preventing grass from wrapping around a tine pipe, which is located over the almost whose span of the tine pipe equipped with tillage tines and also to make the linear member have a large size of room for adjustment. SOLUTION: This grass wrapping prevention device of rotary tines is characterized by the following structure: (1) attaching brackets 3 and 4 to right and left ends of a tine pipe 2 equipped with plural rotary tines 1; (2) placing a linear member 6 such as a wire having an adjuster 5 at one end between the brackets 3 and 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for preventing grass from winding on a tilling nail in a rotary tilling device.

[0002]

2. Description of the Related Art Conventionally, a wire for preventing grass winding is attached to a left and right bracket provided on both right and left ends of a tilling pipe, respectively, in a swinging state. A U-shaped intermediate member is attached, and wire ends are attached to the intermediate member. When adjusting the tension of the wire, the end of the wire attached to the intermediate member is adjusted to expand and contract. However, if the expansion and contraction adjustment section is provided on a small intermediate member, the expansion and contraction dimension is reduced, and the length of the rotary tilling pipe is reduced. Each time the wire is slightly different, the wire must be changed to another wire, and the number of parts increases and the sharing of parts does not progress.

[0003]

SUMMARY OF THE INVENTION The present invention is to solve such a problem of the conventional device, and has taken the following technical means. That is, a plurality of rotary tilling claws 1, 1,. . . Brackets 3 and 4 are attached to the left and right ends of the tilling pipe 2 with the
A device for preventing grass-winding of a rotary tilling claw, comprising a linear member 6 such as a wire having a length adjusting mechanism 5 at one end between the four.

[0004]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The illustrated example is a rotary tilling tool 7 and a tilling pipe 2 which is a main part of the rotary tilling tool 7.
The present invention is folded into a part. Rotary tiller 7
Is attached to a lifting link such as a three-point link 9 for mounting a work machine or a 2P hitch bracket (not shown) disposed on the front and rear portions of the body 8 of the agricultural tractor. It goes up and down by automatic control operation. The driving force of the PTO shaft 10, which is a power take-out device from the agricultural tractor to the outside, is input via a universal joint 11 to an input shaft 12 provided at the left and right central portions of the rotary tiller 7. A central transmission case 13 is provided at the rear portion of the input shaft 12, and the driving force passing through the central transmission case 13 is transmitted to the tilling pipe 2 directly or by-passing as described below.

When the lower portion of the central transmission case 13 is suspended at the center in the left-right direction of the rotary tilling device 7, it is referred to as a center drive cultivator, and the driving force of the central transmission case 13 is less than that of the rotary tilling device 7. What is transmitted to the tilling pipe 2 via the side transmission case 14 located on one side in the left-right direction is referred to as a side-drive tilling device. The illustrated example is a side drive type cultivator in which a side transmission case 14 is disposed on the left side in the traveling direction.

In the side drive type tilling device, the tilling pipe 2 is supported via a bearing or the like between a left side transmission case 14 and a right support plate 15, and the tilling pipe 2 is radially mounted on the tilling pipe 2. Claw holders 16 and 1 with multiple attachments
6. . . . Tilling claws 1,1. . . . Is attached to be removable. When the tilling pipe 2 is driven and rotated, the tilling claws 1, 1,. . Rotate at the same time. Thereby, the mud on the surface of the field is excavated and becomes excavated and scattered mud scattered backward in the traveling direction.

The tilling pipe 2 and the tilling claws 1,1. . A main cover 17 having a fixed length in the front-rear direction
Are mounted between the side transmission case 14 and the support plate 15. A front edge of an elastic plate 18 made of a rubber plate or a soft resin material having substantially the same width as the main cover 17 is attached to a rear edge of the main cover 17. A rear cover is attached to the rear edge of the elastic plate 18. Nineteen leading edges are attached. Although not described in detail, the elastic plate 18 and the rear cover 19 are vertically swingable with respect to the main cover 17. Also, the main cover 1
The right and left connect pipes 20 and 21 are disposed above the center 7. The central transmission case 13, the left and right connect pipes 20 and 21, and the side transmission cases 14 on both sides support the rotary plow 15. It constitutes the main frame of the tool 7.

Next, a grass winding prevention device which is a main part of the present invention will be described. The whole rear view of the rotary tilling tool 7 is shown in FIG. 4, but in order to make the configuration easily understandable, the rear cover 19 is cut away and the rear cover 19 is omitted. At both ends of the wire as the linear member 6,
The base ends of the mounting bolts are each integrated by caulking or the like, and the caulking is covered with a cover pipe 25 that is resistant to wear and impact with a soft resin material or the like. Prevents damage caused by contact with rocks and obstacles, and corrosion by mud. The cover pipe 25 may be rotated with respect to the wire, but if the material is poured into the outer periphery with the wire as the core from the beginning and integrated, the durability is further improved. One mounting bolt is a long bolt 5a serving as the length adjusting mechanism 5, and the other mounting bolt is a short bolt 5b that can be attached to and detached from a mounting portion described later.

In the first embodiment shown in FIG. 4, the left bracket 3 is welded to the vicinity of the claw holder 16 at the left end,
The right bracket 4 is welded to the vicinity of the claw holder 16 at the right end so that the mounting surfaces 3a and 4a thereof face each other. In the mounting hole 22 opened in the mounting surface 3a of the left bracket 3,
As shown in FIGS. 1 and 2, a long bolt 5 a at one end of the wire, which is a linear member 6, is inserted, and a short bolt 5 b at the other end of the wire is inserted into a mounting hole of the mounting surface 4 a of the right bracket 4 and fixed. . The wire whose other end is fixed moves the inner nut 23 and the outer nut 24 located inside and outside the mounting hole 22 of the left bracket 3 of the long bolt 5a at one end thereof, and tightens the wire by moving it in place. Has been adjusted. As shown in FIG. 2, the left and right brackets 3 and 4 have U-shaped ends in plan view, and the outer nut 24 is sandwiched in this portion so as not to rotate.

[0010] The base end of the long bolt 5a on the wire caulking side has an opposing surface 27 which is clamped by a flat mouth wrench.
By tightening the inner nut 23 by pressing the opposed surface 27 with a spanner, the length adjusting mechanism 5 can be tightened and fixed. The short bolt 5b on the right side of the wire also has the same configuration to facilitate fixation. A protective plate 26 is welded to the upper portion of the bracket 3 on the rotating front wall side.
Bolts of the length adjustment mechanism 5 and the inner and outer nuts 23, 2
4 is protected from abrasion and the impact of other objects.

The left and right brackets 3, 4 and the grass wind-up prevention device composed of a wire cable extending between the brackets may be juxtaposed at a distance of about 10 cm from the tilling pipe 2, and in FIG. However, even if one set is used or two sets are provided at the upper and lower positions, the effect of preventing winding is produced, and various modifications are conceivable. However, if the circumference is attached as three sets of 120-degree division as shown in the example of the figure, the grass and straw wound around the tilling pipe 2 have a large space, so that the grass straw can be cut with a blade. Removal such as removal with a stick becomes easy.

FIG. 6 shows a second embodiment of the grass winding prevention device. Hereinafter, portions different from the first embodiment will be described. A rectangular locking member 28 is integrally attached by crimping to one end of a linear member 6a which is a grass winding prevention device made of a wire cable. The other end of the linear member 6a has a long bolt 5b.
Are integrally attached by caulking, and the caulking portion constitutes an opposing surface 27a which can be clamped by a spanner. The long bolt 5b has inner and outer nuts 23b,
24b.

A bracket for fixing both ends of the linear member 6a is a nail engaging left bracket 29 which hooks on the tilling nails 1, 1 attached to the left and right nail holders 16, 16 near the outermost portion.
And the right engagement bracket 30. The claw engaging left bracket 29 has an L-shaped tip when viewed from the rear, and a mounting groove 29 for attaching a long bolt 5b to the bent portion.
Although a is provided, it may be a mounting hole. Reference numeral 31 denotes a rectangular slot, into which the root of the tilling claw 1 to be attached to the claw holder 16 is inserted. The attaching groove 29a is attached toward the center of the rotary tilling tool 7. The claw-engaging right bracket 30 also has a similar L-shaped configuration, and passes through the wire near the square locking member 28 provided at one end of the linear member 6a from the lower end to the center of the bent portion. A slit 30a for attachment is provided. A concave portion 30b is provided inside the upper portion of the slit 30a, and a rectangular locking member 28 provided at one end of the linear member 6a is hooked. The tension of the linear member 6a is adjusted by adjusting the positions of the inner and outer nuts 23b and 24b as in the first embodiment.

FIG. 7 shows a third embodiment of the grass winding prevention device. Hereinafter, portions different from the above-described first and second embodiments will be described. Square locking members 28a, 28a are integrally attached to one end and the other end of the linear member 6b which is a grass winding prevention device made of a wire cable by caulking. The claw engaging right bracket 30 is the same as that of the second embodiment, but the claw engaging left bracket 29a is significantly different and will be described below.

At the base end of the suspension bolt 32, there is provided a mounting ring 33 for forming a rectangular slot 31.
A long bolt 5c protrudes inward along the axial center direction of. The square long hole 31 of the mounting ring 33 is inserted into the base of the tilling claw 1, and a long bolt 5 c protruding along the axial center direction of the tilling pipe 2 is provided with an outer nut 24 c and a left swing bracket 34 from the outside. The inner nut 23c is attached.

At the upper part of the left swing bracket 34, a round mounting hole 35 is opened, and a long bolt 5c is inserted into the mounting hole 35. The lower part of the left swing bracket 34 is bent into an L-shape, and a slit 36 is provided from the lower part to the bent portion. The end wire of the linear member 6b is inserted from the slit 36 to the left swing. The linear member 6b is stretched between the bracket 34 and the claw engaging right bracket 30, and the inner and outer nuts 23c and 24c are used to adjust the in and out positions of the left swing bracket 34 to adjust the tension of the linear member 6b.

[0017]

The present invention provides a plurality of rotary tilling claws 1, 1. . . Brackets 3 and 4 are attached to the left and right ends of the tillage pipe 2 to which the right and left brackets are attached.
Since a linear member 6 such as a wire having a length adjusting mechanism 5 at one end is disposed therebetween, a device for preventing grass curling of a rotary tilling claw is provided. 6
Can be adjusted even if it loosens. In addition, even if the tilling width of the rotary tilling tool is slightly changed and the interval between the left and right brackets 3 and 4 is changed, the adjustment amount of the length adjustment mechanism 5 can be greatly increased because the configuration is simpler than the conventional one, and a wire such as a wire can be used. The length adjustment of the length of the member 6 can be increased, and it is not necessary to use a separate wire for each time the tillage pipe length is slightly different. For this reason,
Parts can be shared without increasing the number of parts.

[Brief description of the drawings]

FIG. 1 is an enlarged rear view of a main part of the present invention.

FIG. 2 is an enlarged plan view of a main part of FIG.

FIG. 3 is an enlarged side view of a main part of FIG.

FIG. 4 is an overall rear view of the rotary tilling tool with a partial cross section.

FIG. 5 is an overall side view from the rear end of the tractor to the rotary tiller.

FIG. 6 is a perspective view showing a main part of a grass winding prevention device according to a second embodiment.

FIG. 7 is a perspective view of a main part of a grass winding prevention device according to a third embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tilling nail 2 Tilling pipe 3 Left bracket 4 Right bracket 5 Length adjustment mechanism 6 Linear member

Continuing from the front page (72) Inventor Masakuni Ishimaru 1 Eightyone Hachikura, Tobe-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd. Engineering Department (72) Inventor Hideaki Saeki 1 Eighth Town, Tobe-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd. Terms (reference) 2B033 AA05 AB01 AB11 AC05 BA01 BB02 BC04 DB46 ED08

Claims (1)

[Claims] 1. A plurality of rotary tilling claws 1, 1,. . . The brackets 3 and 4 are attached to the left and right ends of the tilling pipe 2 to which is attached, and a linear member 6 such as a wire having a length adjusting mechanism 5 at one end is disposed between the left and right brackets 3 and 4. Rotary tilling claw grass roll prevention device.