Title:
WORK MACHINE
Document Type and Number:
WIPO Patent Application WO/2015/151582
Kind Code:
A1
Abstract:
The purpose of this invention is to provide a work machine in which the pressure exerted on a device provided downstream of a hydraulic motor can be prevented from exceeding a pressure tolerance. Said work machine is provided with the following: a cooling fan (61) that is made to rotate by a hydraulic motor (60); a second pump (P2) that operates on power from an engine (6) and supplies a hydraulic fluid to a primary side of the hydraulic motor (60); a solenoid valve (64), provided in a bypass circuit (63) that connects the primary side of the hydraulic motor (60) to a secondary side thereof, that changes the amount of hydraulic fluid flowing through said bypass circuit (63) so as to change the amount of hydraulic fluid supplied to the primary side of the hydraulic motor (60); a filter (62) provided in an oil passage (u) on the secondary side of the hydraulic motor (60); and a relief valve (66) provided between the primary side of the hydraulic motor (60) and the second pump (P2).
Inventors:
FUKUDA YUJI (JP)
NAKAGAWA HIROAKI (JP)
ARII KAZUYOSHI (JP)
KINUGAWA RYOSUKE (JP)
NAKAGAWA HIROAKI (JP)
ARII KAZUYOSHI (JP)
KINUGAWA RYOSUKE (JP)
Application Number:
PCT/JP2015/053419
Publication Date:
October 08, 2015
Filing Date:
February 06, 2015
Export Citation:
Assignee:
KUBOTA KK (JP)
International Classes:
E02F9/00; F15B21/04; F15B21/0427; F15B21/0423
Foreign References:
| JP2000213347A | 2000-08-02 | |||
| JPH10212952A | 1998-08-11 | |||
| JPS58175206U | 1983-11-24 | |||
| US5946911A | 1999-09-07 |
Attorney, Agent or Firm:
YASUDA Toshio et al. (JP)
Toshio Yasuda (JP)
Toshio Yasuda (JP)
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