Title:
WORK MACHINE
Document Type and Number:
WIPO Patent Application WO/2016/076288
Kind Code:
A1
Abstract:
A work machine comprises: a grapple (6); an arm (5) to support the grapple (6); a boom (4) to support the arm (5); an upper rotating body (3) to support the boom (4); a lower traveling body (1) on which the upper rotating body (3) is mounted in a rotatable state; a main pump (14L) to supply hydraulic fluid to a grapple opening and closing cylinder (10) that opens and closes the grapple (6); a pressure sensor (S2L) to detect the discharge pressure of the main pump (14L); and a controller (30) to reduce the flow rate of the hydraulic fluid from the main pump (14L) to the grapple opening and closing cylinder (10) when the discharge pressure detected by the pressure sensor (S2L) exceeds a prescribed pressure (TH1).
Inventors:
YUZAWA YOSHIMITSU (JP)
Application Number:
PCT/JP2015/081542
Publication Date:
May 19, 2016
Filing Date:
November 10, 2015
Export Citation:
Assignee:
SUMITOMO SHI CONSTR MACH CO (JP)
International Classes:
E02F3/36; E02F9/22; F15B11/02; F15B11/08
Foreign References:
| JP2013538321A | 2013-10-10 | |||
| JP2012141705A | 2012-07-26 | |||
| US5540050A | 1996-07-30 |
Other References:
See also references of EP 3219857A4
Attorney, Agent or Firm:
ITOH, Tadashige et al. (JP)
Tadashige Ito (JP)
Tadashige Ito (JP)
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