SWIVEL WORKING VEHICLE - YANMAR DIESEL ENGINE CO

Title:

SWIVEL WORKING VEHICLE

Document Type and Number:

WIPO Patent Application WO/1998/007613

Kind Code:

A1

Abstract:

When a conventional swivel working vehicle is constructed such that a rear part of a swivel body is not extended beyond a travelling device in order to improve an operability at a small site, a balance weight must be significantly increased in weight so as to prevent falling and tumbling of a machine body. In the invention, a core metal projection (1a) of a crawler (1) is offset toward an outside of the machine body from a central position of the crawler (1) in a lateral direction, lugs (1b) formed right and left on an outer peripheral surface of the crawler (1) are formed to assume the same shape on the right and left sides or laterally symmetrical shapes or occupy the same area on the right and left sides, and to assume point symmetrical shapes about a center of rotation of the swivel body (F) between the crawlers (1, 1) on the right and left of the machine body.

Inventors:

KONDO MASAMI (JP)
KAWAMURA TAKUZO (JP)
SETOGUCHI HAJIME (JP)
TANAKA KATASHI (JP)

Application Number:

PCT/JP1997/002899

Publication Date:

February 26, 1998

Filing Date:

August 20, 1997

Export Citation:

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Assignee:

YANMAR DIESEL ENGINE CO (JP)
KONDO MASAMI (JP)
KAWAMURA TAKUZO (JP)
SETOGUCHI HAJIME (JP)
TANAKA KATASHI (JP)

International Classes:

B62D55/253; (IPC1-7): B62D55/253

Foreign References:

JPS56129378U	1981-10-01
JPS61147679U	1986-09-11
JPS5836973U	1983-03-10
JPH08188184A	1996-07-23
JPH08301154A	1996-11-19
JPH0826154A	1996-01-30
JPH08164881A	1996-06-25
JPH06286674A	1994-10-11
JPH06234376A	1994-08-23
JPH0853079A	1996-02-27
JPH0858647A	1996-03-05
JPH0872759A	1996-03-19
JPH0885480A	1996-04-02
JPH0885482A	1996-04-02
JPH0891256A	1996-04-09
JPH0899656A	1996-04-16
JPH08104262A	1996-04-23

Other References: