Title:
SHOVEL
Document Type and Number:
WIPO Patent Application WO/2016/043206
Kind Code:
A1
Abstract:
A shovel according to an embodiment of the present invention has a main pump 14L for supplying working oil to hydraulic actuators 1A, 2A, 8, control valves 171L to 175L for controlling the flow of working oil between the main pump 14L and each of the hydraulic actuators 1A, 2A, 8, a reproducing oil channel 63c for enabling working oil to flow from a rod-side oil chamber of an arm cylinder 8 to a bottom-side oil chamber, a merging oil channel 24 in which working oil discharged by the main pump 14L and capable of flowing through a plurality of channels merges before reaching a working oil tank T when working oil passes through the reproducing oil channel 63c and flows from the rod-side oil chamber of the arm cylinder 8 to the bottom-side oil chamber, and an oil channel 25 capable of communicating the reproducing oil channel 63c with the merging oil channel 24.
Inventors:
KAWASHIMA KOJI (JP)
Application Number:
PCT/JP2015/076233
Publication Date:
March 24, 2016
Filing Date:
September 16, 2015
Export Citation:
Assignee:
SUMITOMO HEAVY INDUSTRIES (JP)
International Classes:
F15B21/14; E02F9/22; F15B11/024
Domestic Patent References:
| WO2002086331A1 | 2002-10-31 | |||
| WO1994013959A1 | 1994-06-23 |
Foreign References:
| US20100024410A1 | 2010-02-04 |
Attorney, Agent or Firm:
ITOH, Tadashige et al. (JP)
Tadashige Ito (JP)
Tadashige Ito (JP)
Download PDF:
Previous Patent: RESONATOR AND RESONANCE DEVICE
Next Patent: FLAME RETARDANT RESIN COMPOSITION AND CABLE TROUGH COMPRISING SUCH COMPOSITION
Next Patent: FLAME RETARDANT RESIN COMPOSITION AND CABLE TROUGH COMPRISING SUCH COMPOSITION