Title:
A hydraulic circuit, an oil pressure cylinder, a processing machine provided with the oil pressure cylinder, and the control method of a hydraulic circuit
Document Type and Number:
Japanese Patent JP6161930
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a hydraulic circuit which cools a pressure oil supplied to a hydraulic actuator and controls the operation of the hydraulic actuator, and to provide a hydraulic cylinder driven by using the hydraulic circuit, a processor including the hydraulic cylinder, or a control method of the hydraulic circuit.SOLUTION: A hydraulic circuit includes: a first hydraulic pump Pp which discharges a pressure oil supplied to a hydraulic actuator 20; a switching valve 11 which is disposed in an oil passage in which a return oil from the hydraulic actuator flows and recovers the return oil from the hydraulic actuator; a cooling part 12 which cools the return oil recovered by the switching valve; and a second hydraulic pump Pc which re-supplies the return oil cooled by the cooling part to the oil passage.
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Inventors:
Koichi Ichihara
Application Number:
JP2013060989A
Publication Date:
July 12, 2017
Filing Date:
March 22, 2013
Export Citation:
Assignee:
Sumitomo Heavy Industries Ltd.
International Classes:
F15B21/04; B24B47/06; F15B11/08
Domestic Patent References:
| JP2005308045A | ||||
| JP8150527A | ||||
| JP2002227998A | ||||
| JP5024262U |
Foreign References:
| US4354351 |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Tadahiko Ito