JP4170537B2 - Wheel wheel and rubber wheel using the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wheel wheel used for, for example, a field work machine and a rubber wheel using the wheel wheel.
[0002]
[Prior art]
Examples of rubber wheels used for upland farming machines include pneumatic narrow tire wheels and solid tire wheels that are often used in rice transplanters by burning rubber on an iron pipe rim.
In the case of the above-mentioned field crop wheel, it is difficult to increase the load bearing capacity because there is a limitation on the tire width.
[0003]
In that respect, even if the solid tire wheel is narrow, the load bearing ability can be increased, and the tire can be manufactured from a small diameter to a large diameter.
As this solid tire wheel, as disclosed in JP-A-6-106908, there is one in which a rubber ring is sandwiched between a pair of left and right split rim bodies attached to an axle.
[0004]
[Problems to be solved by the invention]
The solid tire wheel of the prior art is an integrally formed product having a split rim body that is circular or annular, and when the left and right split rim bodies are formed by pressing from sheet metal, the press die has the size of the entire rim. The initial investment cost becomes large.
If the wheels have a small diameter and are to be produced in large quantities, it is preferable to form a circular or annular whole as a single unit. However, in the case of a working machine that has many models compared to rice farming and cannot expect much in quantity Moreover, when there is a wheel with a large outer diameter, even if it is a split rim form, it may not be profitable if the entire shape of the wheel is integrally formed.
[0005]
An object of the present invention is to provide a wheel wheel and a rubber wheel using the same, which can solve such problems of the prior art.
An object of the present invention is to provide a wheel wheel that can be manufactured at a low cost by dividing the left and right split rim bodies into a plurality of circumferential directions, and a rubber wheel using the wheel.
[0006]
[Means for Solving the Problems]
Plural wheels wheel according to the present invention, the Rimube scan mounted in the vehicle axis, the rubber ring body has a pair of left and right split rim body for clamping is fixed, the pair of right and left split rim body, in each circumferential direction Are divided into unit bodies , and the respective division positions are left and right, and their circumferential phases are shifted from each other .
As a result, the processing mold of the divided unit body 5 is reduced, and the manufacturing cost is reduced.
[0007]
Further, even if the right and left split rim body is divided in the circumferential direction a plurality of unit members, Ru sufficient assembly strength is ensured.
Preferably, each of the divided unit body before Kisayu pair of split rim body is formed in all the same shape.
As a result, all divided unit bodies can be processed with one small processing die, and the manufacturing cost is further reduced.
Preferably, the pre-Symbol rim base and the pair of right and left split rim body is fastened in the peripheral direction a plurality of fasteners.
[0008]
Thus, Rimube scan及 beauty lateral split rim body is fastened at a time, Ru can be performed less and assembling parts easily.
Rubber car wheel according to the present invention, the the wheel WHEEL according to any, the rubber ring body integrally formed in an annular, or belt shape is connected at both ends after being vulcanized molded rubber Watai is Ru fitted by Tei.
Thus, a rubber wheel ring and small various outside diameter can be easily and inexpensively manufactured.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3, a rubber wheel 7 is configured by fitting a ring-shaped rubber ring body 4 to a wheel wheel 1, and the wheel wheel 1 is one side of a rim base 3 attached to an axle 2. In addition, a pair of left and right split rim bodies 5A and 5B are fixed to each other.
The rim base 3 is formed by forming a boss portion 3a fitted to the axle 2 on the inner periphery of the disc, and forming bolt holes 3b on the outer peripheral side at equal intervals in the circumferential direction. The part 3a may be connected with a plurality of spokes.
[0010]
Each of the left and right split rim bodies 5A, 5B is divided into a plurality of unit bodies 5a, 5b in the circumferential direction. In the embodiment, the left and right split rim bodies 5A and 5B are divided into four equal parts, and the circumferentially divided positions Pa and Pb are every 90 degrees. Therefore, each divided unit body 5a and 5b is divided into each split rim body 5A, A 90 degree range of 5B is formed.
Each of the left and right divided unit bodies 5a and 5b has the same shape and is arranged symmetrically. Each of the divided unit bodies 5a and 5b has an inner peripheral portion 10 in which three bolt holes 9 are formed, and a shaft extending from the outer periphery of the inner peripheral portion 10. The taper portion 11 that gradually increases in diameter in the core direction and the sandwiching portion 12 that extends radially outward from the end of the taper portion 11 are integrally formed by pressing or the like.
[0011]
Each of the left and right split rim bodies 5A and 5B is formed into an annular shape by abutting the four divided unit bodies 5a and 5b in the circumferential direction. The bolts 13 serving as the fasteners 6 are passed through the bolts 13 and screwed into the nuts 14 so as to be fastened so that the three members are integrated.
Since the divided unit bodies 5a and 5b of the left and right split rim bodies 5A and 5B are all fixed to the rim base 3, the circumferential division position Pa of the divided unit body 5a and the circumferential direction of the divided unit body 5b The division position Pb may coincide with the circumferential direction, but the intensity increases when the circumferential phase is shifted.
[0012]
In the embodiment, the circumferential division position Pa and the circumferential division position Pb are shifted by 15 degrees, and one division unit body 5a is fastened to one division unit body 5b with two bolts 13, and the remaining One bolt 13 is used to fasten the divided unit body 5b adjacent to the fastened divided unit body 5b.
The rubber ring body 4 is an annular body made of solid rubber and having lugs 17 projecting from the outer peripheral portion at equal intervals in the circumferential direction. Then, both ends of the belt-like intermediate are jointly formed.
[0013]
The rubber ring body 4 having a small diameter and a relatively large number of manufactured pieces is preferred to be integrally vulcanized with a mold because the investment of the rubber mold is small. It is preferable that a small number can be manufactured simply by changing the length of the belt according to the diameter, since the investment cost can be reduced and the needs can be met.
The rubber ring body 4 may be embedded with a circumferential tensile body such as steel or nylon, or may be formed in a plurality of layers having different hardness, for high load applications.
[0014]
In the rubber wheel 7 described above, four split unit bodies 5a are arranged next to each other on the inner peripheral side of the annular rubber ring body 4 so as to form an annular split rim body 5A. Four divided unit bodies 5b from the other side are arranged next to each other to form an annular split rim body 5B, and the outer peripheral portion of the rim base 3 is applied to the inner peripheral portion 10 of the left and right split rim bodies 5A, 5B. The bolts 13 are passed through the three bolt holes 3b and 9 and fastened together, and the inner periphery of the rubber ring body 4 is expanded by the tapered portions 11 of the left and right split rim bodies 5A and 5B. The rubber ring body 4 is clamped and the rubber ring body 4 is mounted on the outer periphery of the left and right split rim bodies 5A and 5B.
[0015]
The wheel wheel 1 has a pair of left and right split rim bodies 5A and 5B sandwiching the rubber ring body 4 divided into a plurality of divided unit bodies 5a and 5b in the circumferential direction. Since the manufacturing cost is reduced and the circumferential division positions Pa and Pb of the left and right split rim bodies 5A and 5B are shifted from each other in the circumferential direction, sufficient assembly strength can be obtained even if they are divided into a plurality of circumferential directions. Since all the divided unit bodies 5a and 5b are formed in the same shape, all the divided unit bodies 5a and 5b can be processed with one small processing die, and the production cost is lower. In addition, the rim base 3 and the left and right split rim bodies 5A and 5B are fastened together by a plurality of fasteners 6 in the circumferential direction so that they can be assembled at a time with a small number of parts. .
[0016]
Further, since the rubber wheel 7 can be formed by integrally molding the rubber ring body 4 in an annular shape, or by connecting both ends after being vulcanized and formed into a belt shape, it can be easily and inexpensively used with various large and small outer diameters. Can be produced.
FIG. 4 shows a modification of the wheel 1 in which the divided unit bodies 5a and 5b each form a quarter circle. The divided unit body 5a and the divided unit body 5b are in the circumferential phase. Are shifted by 45 degrees, and four bolt holes 9 are formed, and two divided unit bodies 5b are overlapped by half with respect to one divided unit body 5a. It comes to conclude.
[0017]
Accordingly, the four bolt holes 9 of one divided unit body are two at both ends of the divided unit body and two near the center, and the four bolt holes 9 are not formed at equal intervals.
As described above, the left and right split rim bodies 5A and 5B of the wheel 1 can set the position and number of the bolt holes 9 appropriately according to the angle shifted in the circumferential direction, and can firmly connect the divided unit bodies 5a and 5b to each other. What is necessary is just to comprise.
In addition, this invention is not limited to the said embodiment and modification, It can deform | transform variously. For example, the rubber wheel 7 can be used for a rice transplanter, a forklift, etc., and the wheel wheel 1 has a rim base 3 disposed between the inner peripheral portions 10 of the left and right split rim bodies 5A, 5B, a tapered portion 11 and / or a clamping portion. 12 may be formed with an anti-rotation protrusion that protrudes toward the rubber ring body 4 side.
[0018]
Further, the division of the left and right split rim bodies 5A and 5B may be two divisions, three divisions, five divisions or more in addition to four divisions, and each division unit body 5a, 5b is fastened by two or more fasteners 6 for one. It is preferable.
[0019]
【The invention's effect】
According to the present invention described in detail above, since the left and right split rim bodies fixed to the rim base are divided into a plurality of circumferentially unit bodies, the wheel wheel machining die can be reduced, and the manufacturing cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a rubber wheel of the present invention.
FIG. 2 is a side view of the same.
FIG. 3 is a front view of the same section.
FIG. 4 is a side view showing a modification of the split rim body.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Wheel wheel 2 Axle 3 Rim base 4 Rubber ring 5A Split rim body 5B Split rim body 5a Split unit body 5b Split unit body 6 Fastener 7 Rubber wheel Pa Circumferential division position Pb Circumferential division position

Claims (4)

The rim base attached to the axle, a pair of left and right split rim body for holding the rubber ring body is fixed,
The pair of left and right split rim bodies are
Wheel wheel, each divided into a plurality of unit bodies in the circumferential direction, and wherein the respective division positions are shifted in the circumferential direction phases in the left and right. 2. The wheel according to claim 1 , wherein all of the divided unit bodies in the pair of left and right split rim bodies are formed in the same shape . The wheel wheel according to claim 1 or 2, wherein the rim base and the pair of left and right split rim bodies are fastened together by a plurality of fasteners in the circumferential direction . A rubber ring body integrally formed in an annular shape or a rubber ring body having both ends connected after being vulcanized and formed into a belt shape is fitted to the wheel wheel according to any one of claims 1 to 3. rubber car wheel, characterized in that is.

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