US 2003/0151304 A1Published application

Structure for standardizing parts of a roller assembly for a construction vehicle

AssigneeTopy Kogyo Kabushiki Kaisha

InventorsHiroyuki Takeno, Isao Yoshida, Makoto Takagi, Go Morishima

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Abstract

A structure for standardizing at least one kind of part of a roller assembly for a construction vehicle so that the part can be used for a same size of construction vehicles having different structural specifications of a plurality of construction vehicle makers. The at least one kind of part includes at least one of a shell, a shaft, a floating seal, a bushing and a collar. Structural specifications including the configuration and dimension, the kind of steel or material, and the heat treatment specification or the mechanical property for the at least one kind of part are unified as much as possible over the same size of the construction vehicles of a plurality of construction vehicle makers.

Claims11

Dependent claims

A structure for standardizing at least one kind of part of a roller assembly for a construction vehicle so that said part can be used for a same size of construction vehicles having different structural specifications of a plurality of construction vehicle makers, said at least one kind of part including at least one of a shell, a shaft, a floating seal, a bushing and a collar,

(a) wherein when said at least one kind of part of the roller assembly includes at least one of said shell, said shaft, said floating seal and said bushing, except a dimension of said shaft in an axial direction of said roller assembly, each of configurations and dimensions in a radial direction and in the axial direction of said roller assembly, a kind of steel or a material, and a heat treatment specification or a mechanical property of said at least one of said shell, said shaft, said floating seal and said bushing is unified over said same size of construction vehicles of said plurality of construction vehicle makers, while said dimension of said shaft in the axial direction of said roller assembly is varied according to said construction vehicles of said plurality of construction vehicle makers, and
(b) when said at least one kind of part of the roller assembly includes said collar, each of configurations and dimensions in the radial direction and in the axial direction of said roller assembly of a portion where said shaft is inserted and a portion where said floating seal is inserted, a material, and a mechanical property of said collar is unified over said same size of construction vehicles of said plurality of construction vehicle makers, while a position, a diameter and a pitch of a coupling hole of said collar for use in coupling said collar to a track frame are allowed to be varied according to said construction vehicles of said plurality of construction vehicle makers.

wherein except a dimension of said shaft in an axial direction of said roller assembly, each of configurations and dimensions in a radial direction and in the axial direction of said roller assembly, a kind of steel or a material, and a heat treatment specification or a mechanical property of said at least one of said-shell, said shaft, said floating seal and said bushing is unified over said same size of construction vehicles of said plurality of construction vehicle makers, while said dimension of said shaft in the axial direction of said roller assembly is varied according to said construction vehicles of said plurality of construction vehicle makers.

Dependencies are inferred from the claim text.