JPH0891256A - Crawler rubber pad - Google Patents

Abstract

PURPOSE: To install a crawler to a track link without removing a rubber even though the rubber protrudes to the inner side of the crawler, by eliminating the existence of a rubber pad around the inner surface of crawler plates at the connecting positions of track links to connect the crawler rubber pads. CONSTITUTION: A rubber pad is formed around the inner surface of a crawler plate 1. When the protrude of the rubber pad 2 exists up to the connecting position of track links, the installing of the crawler Tel plate is made instable. In this case, at the connecting position of the track links, the rubber pad 2 is made not to protrude to the inner periphery side of the crawler plate 1. As a result, since a flat crawler plate can be applied, the bolt installing hole 4 can be formed from every side, and the hole diameter at the track link side is made larger so as to improve the fastening force. The thickness F of the rubber rotating to the inner side of the crawler plate 1 is made 4mm or more, for example, and when the rubber width at the outer side in the width direction of the crawler plate 1 is made D, and the rubber width positioning at the inner side is made E, the E is formed within the scope at 0.5 D or larger.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a track of a vehicle having an endless track, and more particularly to a structure of a track rubber pad.

[0002]

2. Description of the Related Art In construction machines and civil engineering work machines, the road surface is often damaged when traveling on a paved road surface. Therefore, instead of the steel track plate, the outer surface of the track plate is replaced. Tracks with rubber pads have become widely used. In the conventional crawler belt rubber pad, the rubber pad is vulcanized and bonded so as to cover the outer surface side of the crawler plate. However, at the time of manufacturing, the shoe plate is set in the mold and the remaining air space is filled with rubber, and the rubber having fluidity has the property that it can easily rotate not only to the surface of the shoe plate but also to the inside thereof. . The track link will be fixed to this track, but since the inner surface of the track and the inner surface of the rubber pad are on the same plane, it is extremely inconvenient for the rubber to protrude to the inner surface of the track, and this sticking out occurred. It was necessary to remove all rubber parts when installing the track link. That is, the rubber protruding to the inner side of the shoe plate was removed by a knife or buffing, but this work not only takes time, but also the main rubber pad main body is easily damaged, and improvement is required.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to remedy the above-mentioned drawbacks, and even if rubber sticks out to the inside of the shoe plate, it is possible to attach a track link without removing it. A crawler rubber pad is provided.

[0004]

The summary of the present invention is as follows.
A crawler rubber pad consisting of a track plate and a rubber pad vulcanized and adhered to the surface side of the track plate, wherein the rubber pad also covers the inner surface of the track plate. It is a crawler rubber pad characterized by not presenting,
Preferably, the crawler plate at the connecting portion of the track ring is a crawler belt rubber pad exposed to the inside of the inner surface of the rubber pad.

[0005]

In the present invention, the rubber pad protruding to the inner peripheral side of the track is not made to exist at the connecting portion of the track ring. As a concrete structure, the inner surface of the track is made taller. It is set in the manufacturing mold so that the protruding rubber does not reach the inner surface.
By doing so, the protruding rubber does not interfere with the connection with the track link.

[0006]

The present invention will be described in more detail with reference to the following examples. 1 is a partial plan view of an inner peripheral side of a crawler belt rubber pad according to a first embodiment of the present invention, FIG. 2 is a partial plan view of an outer peripheral side, and FIG.
FIG. 3 is a sectional view taken along line AA of FIG. In the figure, 1 is a flat track plate, 2 is a rubber pad, and 3 is a track link. As shown in the figure, a rubber pad 2 is formed around the inner surface of the shoe plate 1 for the purpose of improving the adhesion between the two and improving the life of the crawler rubber pad. However, if the protrusion of the rubber pad 2 exists even at the portion where the track link 3 is connected, the attachment of the rubber pad 2 becomes unstable.

In this embodiment, the rubber pad 2 is prevented from protruding to the inner peripheral side of the track plate 1 at the portion where the track link 3 is connected. In order to obtain such a crawler belt rubber pad, for example, as shown in FIG. 4, a protrusion 11 is formed on the inner surface of a mold 10 for molding the crawler belt rubber pad, in contact with a site for setting the crawler plate 1. It was decided to solve by.

In the present invention, since the flat shoe plate can be adopted, the bolt mounting hole 4 can be drilled from either side, and the hole diameter on the track link side can be increased to improve the tightening force. It also happened.
In this respect, the conventional shoe plate with a grouser has an opposite hole diameter, and the tightening force is small. Further, since there is no grouser on the ground contact side, the thickness of the rubber pad can be made extra, and therefore, the rubber is not partially distorted and the durability of the rubber is improved. .

The rubber that rotates inside the shoe plate 1 can be expected to have improved durability as described above, but the thickness F is preferably 4 mm or more. When the rubber width is D and the rubber width positioned inside is D, E is preferably in the range of 0.5D or more. The rubber present on the inner side also helps prevent the rust of the shoe plate 1.

In the figure, the four corners of the shoe plate 1 are obliquely cut off, but this is to reduce the occurrence of so-called edge cutting of the pad rubber, and these four corners may be cut off in an arc shape. For this purpose, the crawler plate 1 may also be chamfered in the thickness direction or processed into an arcuate cross section.

[0011]

The present invention facilitates the attachment of the crawler belt rubber pad and the track link, and even if the rubber pad flows into the inner peripheral side of the track plate, the both can be attached without affecting this. It is a thing.

[Brief description of drawings]

FIG. 1 is a partial plan view of an inner peripheral side of a crawler belt rubber pad according to a first embodiment of the present invention.

FIG. 2 is a partial plan view of an outer peripheral side.

FIG. 3 is a sectional view taken along line AA of FIG.

FIG. 4 is a sectional view of a mold for molding a crawler belt rubber pad.

[Explanation of symbols]

 1 ... track plate, 2 ... rubber pad, 3 ... track link, 10 ... mold, 11 ... protrusion.

Claims (2)

[Claims] 1. A crawler rubber pad comprising a crawler plate and a rubber pad vulcanized and adhered to the surface side of the crawler plate, the rubber pad also covering the inner periphery of the crawler plate, at the connecting portion of a track ring connecting the crawler belt rubber pads. A crawler rubber pad characterized by not having a rubber pad around the inner surface of the plate. 2. The crawler belt rubber pad according to claim 1, wherein the crawler plate at the connecting portion of the track ring is exposed to the inside of the inner surface of the rubber pad.