Title:
WORK MACHINE
Document Type and Number:
WIPO Patent Application WO/2023/182406
Kind Code:
A1
Abstract:
In the present invention, an attaching base (15) to which a counter weight (13) is attached is provided in a rear part of an upper turning body (4), a boss hole (15a) is formed through the attaching base, and a boss recess (13a) is formed in the front surface of the counter weight (13). A boss member (18) is inserted from the front side through the boss hole (15a) of the attaching base into the boss recess (13a) of the counter weight (13), and a bolt (21) is inserted through the counter weight (13) from the rear side to be screwed in the boss member (18). By means of a fastening force of the bolt (21), an abutment surface (18c) of the boss member (18) abuts against the front surface of the attaching base (15), the counter weight (13) is fastened to the attaching base (15), and the weight of the counter weight (13) is supported on the attaching base (15) with the boss member (18) therebetween.
Inventors:
TSUJIMOTO YUYA (JP)
Application Number:
PCT/JP2023/011401
Publication Date:
September 28, 2023
Filing Date:
March 23, 2023
Export Citation:
Assignee:
HITACHI CONSTRUCTION MACH CO (JP)
International Classes:
E02F9/18; B66C23/74
Foreign References:
| JPH0633485A | 1994-02-08 | |||
| JPH0165356U | 1989-04-26 | |||
| JPH09124285A | 1997-05-13 | |||
| JPH07268908A | 1995-10-17 |
Attorney, Agent or Firm:
AIHARA & PARTNERS PATENT ATTORNEY CORPORATION (JP)
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