JPS6342708Y2 - - Google Patents

Description

[Detailed description of the invention] In this invention, the wheels that guide the rotation of the crawler are
The present invention relates to a rubber crawler for a crawler traveling device that rolls on the upper surface of a protrusion formed on the inner periphery of the crawler along the rotating direction of the crawler.

Conventional rubber crawlers have rail-shaped rubber protrusions formed along the rotational direction of the crawler on both sides of the travel path of the driving wheels, and the rollers roll on the upper surface of these rail-shaped protrusions. configured (for example,
(Refer to Utility Model Application Publication No. 52-40428).

The problem to be solved by the present invention is to improve the durability of rubber crawlers.

In conventional rubber crawlers, the protrusion, which is made of a continuous rail-shaped rubber member, is compressed and deformed in the rotational direction of the crawler at the folded rotation part at the front and back of the rubber crawler, and as a result of this repetition, the protrusion part There was a problem with early deterioration. Another disadvantage is that the top of the rubber protrusion is abraded due to strong contact with the rolling wheels that roll on the upper surface of the protrusion, making the crawler loose and easy to come off.

The present invention solves the problems of the prior art, and aims to provide a rubber crawler with excellent durability.

In order to achieve the above object, the rubber crawler of the present invention has core metals embedded at regular intervals in the rotating direction of the endless rubber belt-like body, and the core metals are embedded on both sides of the moving path of the drive roller. An upwardly-spreading core bar protrusion whose top part is wide along the rotational direction of the belt-like body and formed on the rolling surface of the roller is erected from the part of The entire circumference of the core protrusion is continuous with the belt-like body, leaving only the top of the core protrusion, with a recess formed between the core protrusions to facilitate bending of the belt-like body. The supporting portion of the core protrusion is formed by coating the base of the core protrusion with rubber and increasing the amount of rubber coating on the base of the core protrusion.

Therefore, according to the present invention, the following effects can be obtained.

In the rubber crawler of the present invention, a protrusion is provided on the core metal, the top part of which is widened in the direction of rotation of the belt-like body, and the upper surface of this core metal protrusion forms the rolling surface of the roller. It is possible to prevent wear and tear due to direct contact with the roller, and to prevent the crawler from loosening and coming off due to wear and tear.

The rubber crawler of the present invention has a recess formed between adjacent core protrusions in the rotating direction of the belt-like body to facilitate the bending of the belt-like body, so that the folded and rotating portions before and after the rubber crawler are There is no compressive deformation like in the past, and the rolling surface of the wheels can be maintained in good condition over a long period of time.

In the rubber crawler of the present invention, the core protrusions are shaped to expand upward, so the base of the core protrusions can be made thin while the rolling surface is lengthened, and the belt-like body can therefore be smoothly bent. Moreover, since the base of the core metal protrusion is supported by a support part with a large rubber coating, it can sufficiently counter the strong contact pressure from the rolling wheels rolling on the upper surface of the core metal protrusion, and as a whole, wear and tear is prevented. A smooth rubber crawler with no bending can be obtained.

Next, an embodiment will be described based on FIGS. 1 to 4.

An upper guide roller 2 and a plurality of lower guide rollers 3 are attached to the longitudinally intermediate portion of the truck frame 1, and a drive roller 4 is attached to one longitudinal end of the truck frame 1, and a driving roller 4 is attached to the other end. Install the rotating wheel 5,
A rubber crawler 6 is wound around these wheels 2 to 5 to constitute a crawler type traveling device.

To construct the rubber crawler 6, a large number of core metals 8 are attached to the rubber endless belt-like body 7, which is its main constituent member, and which serves as a reinforcing member thereof and a locking member for the sprocket teeth of the drive roller 4. They are arranged at equal intervals in the longitudinal direction of the belt-shaped body and are buried so that almost the entirety thereof is coated with rubber, and the core metals 8 are buried in the center in the width direction of the belt-shaped body, inward from the circumferential surface of the belt-shaped body. A pair of core protrusions 8a in the width direction are integrally formed to protrude to the side and guide the rolling of the rolling wheels 2 to 5, and to receive the rolling wheels 2, 3, and 5 in contact with the tip surface a, and furthermore, the belt A hole 7a is formed between the core metals 8 at the widthwise central portion of the shaped body 7, into which the tips of the sprocket teeth of the drive roller 4 are inserted.

The core metal protrusions 8a are formed into an inverted trapezoidal shape when viewed from the side, and a recess is provided between adjacent core metal protrusions 8a in the rotating direction of the belt-like body 7 to facilitate bending of the belt-like body 7. Each wheel 2,
The entire periphery of the tip-side taper surface b and side surface c of the core protrusion 8a is covered with a rubber 7b continuous to the belt-like body 7, leaving only the tip surface a where 3 and 5 come into strong contact. The covering allowance for the base of the gold protrusion 8a is increased.

In other words, the tip surface a is prevented from rusting due to contact with the wheels 2, 3, and 5, and the covering rubber 7b is used to prevent rust from forming on all other surfaces b and c. While providing sufficient overall rust prevention, it also prevents the crawler 6 from loosening due to abrasion of the rubber coating on the tip surface a due to strong contact with the wheels 2, 3, and 5, such as when the tip surface a is coated with rubber. It is configured to prevent the crawler 6 from coming off due to loosening.

The specific shape of the core protrusion 8a can be improved in various ways, and the specific shape of the rubber coating of the core protrusion 8a on all parts other than the tip surface a that contacts the rolling wheels can also be improved in various ways. .

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

1 to 4 show embodiments of the present invention,
Figure 1 is an overall side view of the crawler type traveling device, Figure 2
The figure is an enlarged plan view of the crawler, FIG. 3 is a cross-sectional view taken along the line - - in FIG. 2, and FIG. 4 is a cross-sectional view taken along the - line in FIG. 7...Rubber, 2,3,5...Rotary wheel, 4...Driving roller, 7...Rubber endless belt-like body, 8...Core metal, 8a...Core metal protrusion.

Claims (1)

[Scope of utility model registration request] Core metals 8 are buried at regular intervals in the rotating direction of the rubber endless belt-like body 7, and the top portions of the core metals 8 are inserted into the belt-like body 7 from the portions on both sides of the movement path of the driving rollers 4. Rolling wheel 2, which is widened along the rotation direction,
Upper-spreading core protrusions 8 formed on the rolling surfaces of 3 and 5
a to form a recess for facilitating bending of the belt-like body 7 between the core metal protrusions 8a adjacent to each other in the rotating direction of the belt-like body 7. The rubber 7 is continuous with the belt-like body 7 around the entire circumference of the core protrusion 8a, leaving only the top part.
A rubber crawler in which a supporting portion of the core protrusion 8a is formed by covering the base of the core bar protrusion 8a with a larger rubber covering thickness.