US 7,066,289 B2Granted

Track support system for a crawler

AssigneeShin Caterpillar Mitsubishi Ltd.

InventorsKouhei Fujita, Shigeyoshi Adachi, Jyouji Okamoto, Yuuichi Suehiro

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Abstract

Mud and sand are prevented from entering between support-receiving members since both ends of the roller shaft are constructed so as to be held at both sides thereof when providing the upper roller on the travelling body frame secured in a civil engineering apparatus. The first and second support receiving members 19, 20 are constructed so that the members respectively support both end portions of the roller shaft 17a of the upper roller 17 on the upper part of the track frame 11 and cross frame 12 on the travelling body frame 10 secured at the lower part of the civil engineering apparatus, wherein the roller supporting portions 19a, 20b and a pair of coupling pieces 19a, 20a for coupling the roller supporting portions 19b, 20b to the travelling body frame 10 are formed to be substantially reverse U-shaped.

Claims11

Dependent claims

A crawler traveling apparatus, comprising:

a pair of connected track frames, a track frame on each side of the crawler traveling apparatus;
a pair of wheels rotatably disposed on each track frame, a forward wheel at an end in a principal direction of apparatus movement and a backward wheel at an end opposite to the principal direction of movement;
a crawler wound around each pair of wheels;
at least one upper roller mounted to each track frame, each upper roller having a roller shaft and a roller body, wherein axial ends of the roller shaft of each upper roller is supported by a support receiving member secured at least on the track frame, said support receiving member is formed to be substantially reverse U-shaped comprising a separate roller supporting portion and a pair of coupling pieces, the roller supporting portion attached to and between the pair of coupling pieces, for coupling the roller supporting portion to at least the track frame, the roller supporting portion supporting an axial end of the roller shaft.

1 more element

Dependencies are inferred from the claim text.