Title:
WORKING MACHINE WITH CRAWLER UNIT
Document Type and Number:
WIPO Patent Application WO/2018/151017
Kind Code:
A1
Abstract:
The present invention makes it possible to mount a reinforcement rib along the center of the longitudinal lower part of a fitting section to thereby prevent uneven distribution of a load from a lower roller. This crawler crane 100 is provided with: an affixation pin 23-1e for affixing an extension beam 23 at the fitting section 32a of a side frame 32; an affixation pin insertion hole 23-1g formed in the extension beam 23; an affixation pin fitting hole 32d formed in the fitting section; and a reinforcement rib 32e extended along the lower surface of the lower plate 32b of the fitting section 32a, and the crawler crane 100 is configured such that the extension beam 23 is affixed to the fitting section 32a by inserting the affixation pin 23-1e into the affixation pin fitting hole 32d through the affixation pin insertion hole 23-1g. The reinforcement rib 32e is provided along an imaginary centerline 51 extending from the center of the opening of the fitting section 32a, and the affixation pin fitting hole 32d is provided at a position offset from the centerline 52 and not interfering with the reinforcement rib 32e.
Inventors:
NG JACINDA (JP)
FURUKAWA KAKUICHI (JP)
TANIMOTO SHINGO (JP)
FURUKAWA KAKUICHI (JP)
TANIMOTO SHINGO (JP)
Application Number:
PCT/JP2018/004495
Publication Date:
August 23, 2018
Filing Date:
February 08, 2018
Export Citation:
Assignee:
HITACHI SUMITOMO HEAVY IND CONSTRUCTION CRANE CO LTD (JP)
International Classes:
B62D55/10; B62D21/18; B66C23/62
Foreign References:
| JP2014129079A | 2014-07-10 | |||
| US20150096955A1 | 2015-04-09 | |||
| US5293949A | 1994-03-15 |
Attorney, Agent or Firm:
THE PATENT BODY CORPORATE TAKEWA INTERNATIONAL PATENT OFFICE (JP)
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