Title:
SHOVEL
Document Type and Number:
WIPO Patent Application WO/2014/073248
Kind Code:
A1
Abstract:
A hydraulic shovel according to an embodiment of the present invention is provided with: a hydraulic rotation motor (21); relief valves (400L, 400R) which are provided to the hydraulic rotation motor (21); and an accumulator section (42) which supplies hydraulic oil to the hydraulic rotation motor (21), the hydraulic oil having a pressure lower than the relief pressures of the relief valves (400L, 400R). The accumulator section (42) accumulates hydraulic oil present on the braking side of the hydraulic rotation motor (21). The accumulator section (42) can release hydraulic oil to the upstream side of a main pump (14).
Inventors:
WU CHUNNAN (JP)
Application Number:
PCT/JP2013/071161
Publication Date:
May 15, 2014
Filing Date:
August 05, 2013
Export Citation:
Assignee:
SUMITOMO HEAVY INDUSTRIES (JP)
International Classes:
E02F9/22; F15B21/14
Foreign References:
| JPS56170301U | 1981-12-16 | |||
| JP2003222105A | 2003-08-08 | |||
| JP2000204604A | 2000-07-25 |
Other References:
See also references of EP 2918734A4
Attorney, Agent or Firm:
ITOH, Tadashige et al. (JP)
Tadashige Ito (JP)
Tadashige Ito (JP)
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