Title:
CATERPILLAR TRACK BUSH AND CATERPILLAR LINK DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/073956
Kind Code:
A1
Abstract:
[Problem] To provide a caterpillar track bush and a caterpillar link device that can maintain sealing capability stably for a long time and can be easily maintained for recovering sealing capability. [Solution] A caterpillar track bush comprises: a caterpillar track bush main body (31) which includes a large-radius cylindrical part (31a) that forms an intermediate part in an axial direction (O), and a small-radius cylindrical part (31b) that has a smaller radius than the large-radius cylindrical part (31a) and forms an end part in the axial direction (O); an elastic ring (32) which is attached around the outside of the small-radius cylindrical part (31b); a seal ring (33) which includes a seal contact end surface (37) formed on the outer end side, and is attached to the small-radius cylindrical part (31b) by way of the elastic ring (32); a reverse taper surface (36) and a mountain-shaped protrusion (35) for preventing the elastic ring (32) from moving outward in the axial direction (O) of the small-radius cylindrical part (31b); and a tongue-shaped protrusion (39) and a reverse taper surface (40) for preventing the seal ring (33) from moving outward in the axial direction (O) of the small-radius cylindrical part (31b).
Inventors:
HISAMATSU KENICHI (JP)
Application Number:
PCT/JP2011/077537
Publication Date:
June 07, 2012
Filing Date:
November 29, 2011
Export Citation:
Assignee:
KOMATSU MFG CO LTD (JP)
HISAMATSU KENICHI (JP)
HISAMATSU KENICHI (JP)
International Classes:
B62D55/21
Foreign References:
| JPH01114387U | 1989-08-01 | |||
| JPS59100685U | 1984-07-07 | |||
| JP2010052596A | 2010-03-11 |
Attorney, Agent or Firm:
INOUE TSUTOMU (JP)
Tsutomu Inoue (JP)
Tsutomu Inoue (JP)
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Claims: