Komatsu Corporation

Hiroaki Watanabe

Kazutoshi Hori

Kazuo Yasojima

Teiji Yamamoto

Tomihiro Tagawa

Kenji Taira

Masatake Tamaru

Kenzo Kimoto

An elastic track shoe is provided wherein loosening of bolts is prevented by use of a rigid core bar and the thickness of an elastic body subjected to a load can be increased irrespective of grousers. To this end, the core bar is integrally formed by casting, forging or precutting, a ground engaging side of the core bar is covered with the elastic body, and a portion of the core bar defined by projection of a ground engaging face of the elastic body is divided into two parts.

Elastic track shoe

The present invention is an elastic flat tread which can prevent an elastic solid from cracking even if the vehicle runs on a protruding object during traveling. For this purpose, the elastic flat tread is provided with any core () of a core () attached to a link () and a core () attached to a metal plate (A) which is attached to a link (), and end portions () in a longitudinal direction of the aforesaid any core () are bent toward the side not in contact with the around.

Elastic flat tread

It is possible to achieve a light structure by making a part of a core bar thin and to prevent an elastic body from strain deforming by a smooth rib reinforcing portion from which an edge portion of the core bar does not protrude. It is possible to achieve a strength even when piercing a hole in the core bar and to prevent the elastic body from being cut by an edge portion of a hole. Accordingly, in a core bar ( ) of an elastic body track shoe fastened to each pair of joint links of a crawler by bolts, recess portions ( ) formed in a substantially inverse-trapezoidal shape or recess portions ( ) formed in a substantially inverse-trapezoidal shape toward front end portions are formed in non-grounded surface sides of right and left wing portions in a direction of a crawler width. A recess portion ( ) formed in a substantially inverse-trapezoidal shape or a through hole ( ) may be formed in a center portion.

Core bar of elastic body track shoe

It is possible to achieve a light structure by making a part of a core bar thin and to prevent an elastic body from strain deforming by a smooth rib reinforcing portion from which an edge portion of the core bar does not protrude. It is possible to secure a strength even when piercing a hole in the core bar and to prevent the elastic body from being cut by an edge portion of a hole. Accordingly, in a core bar ( ) of an elastic body track shoe fastened to each pair of joint links of a crawler by bolts, recess portions ( ) formed in a substantially inverse-trapezoidal shape or recess portions ( ) formed in a substantially inverse-trapezoidal shape toward front end portions are formed in non-grounded surface sides of right and left wing portions in a direction of a crawler width. A recess portion ( ) formed in a substantially inverse-trapezoidal shape or a through hole ( ) may be formed in a center portion.

The present invention is an elastic flat tread which can prevent an elastic solid from cracking even if the vehicle runs on a protruding object during traveling. For this purpose, the elastic flat tread is provided with any core ( ) of a core ( ) attached to a link ( ) and a core ( ) attached to a metal plate (9A) which is attached to a link ( ), and end portions ( ) in a longitudinal direction of the aforesaid any core ( ) are bent toward the side not in contact with the ground.

With the objective of providing an elastic crawler shoe capable of securing desired ground contact pressure on an icy road or a pressed snow road, thereby preventing a skid, a ground contact face of an elastic body which is bonded to a core bar so as to cover the core bar has grooves, and a central ground contact face in a longitudinal direction of the elastic crawler shoe is provided with stepped parts relative to end portions thereof so as to be protrusively stepped.

Elastic crawler shoe

A rubber crawler belt having a pattern of a lug provided on an outer circumferential side of a rubber belt has a central lug portion provided to continuously extend around a center portion in a width direction of the outer circumference of the rubber belt, in a waveform, and a plurality of branch lug portions each having a predetermined width and provided from the central lug portion toward left and right end portions of the rubber belt to be away therefrom diagonally in a circumferential direction, and an interval between the branched lug portions adjacent to each other being the same as an interval between drive protrusions, in the circumferential direction of the rubber belt.

Rubber crawler belt

A crawler belt type traveling system which ensures improved durability in the portions near road wheel rolling contact sections. The system comprises crawler belts formed from an elastic material such as rubber and road wheels attached to a vehicle body. Each crawler belt has core bars embedded therein so as to be aligned at specified intervals in a longitudinal direction of the crawler belt. Each core bar has a pair of guide projections at the center thereof with respect to a widthwise direction of the crawler belt, the pair of guide projections being aligned in a widthwise direction of the crawler belt. Provided at both sides of the pair of guide projections are road wheel rolling contact sections. Each road wheel comes into contact with the road wheel rolling contact sections, for supporting each crawler belt. In such a system, the tread of each road wheel comes into contact with the road wheel rolling contact sections of the crawler belt, being away from the root parts of the guide projections of the crawler belt.

Growing community of inventors

Komatsu, Japan

Hiroaki Watanabe