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Patent Searching and Data


Title:
SHOVEL AND CONTROL VALVE FOR SHOVEL
Document Type and Number:
WIPO Patent Application WO/2017/164169
Kind Code:
A1
Abstract:
The shovel according to an embodiment of the present invention has an arm cylinder (8) that is driven by working oil discharged by a main pump (14) so as to move an arm (5), a control valve (176B) that is disposed on a center bypass pipeline (40R), a control valve (177) that is disposed on a parallel pipeline (42R), and a controller (30) that controls the movement of the control valve (177). The control valve (176B) and the control valve (177) are formed inside a valve block (17B) of the control valve (17), and the control valve (177) is disposed upstream of the control valve (176B).

Inventors:
MISAKI YOUJI (JP)
Application Number:
JP2017/011208
Publication Date:
September 28, 2017
Filing Date:
March 21, 2017
Export Citation:
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Assignee:
SUMITOMO(S H I ) CONSTRUCTION MACHINERY CO LTD (JP)
International Classes:
F15B11/042; E02F9/22; F15B11/00
Foreign References:
JPH11190304A1999-07-13
JP2014001768A2014-01-09
JPH08105404A1996-04-23
JPH02566B21990-01-08
JP2014001769A2014-01-09
Other References:
See also references of EP 3434910A4
Attorney, Agent or Firm:
ITOH, Tadashige et al. (JP)
Tadashige Ito (JP)
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