Title:
HYDRAULIC PRESSURE GENERATING DEVICE AND WORKING MACHINE PROVIDED WITH DEVICE THEREOF
Document Type and Number:
Japanese Patent JP2648542
Kind Code:
B2
Abstract:
PURPOSE: To use a hydraulic pressure generating device and a working machine provided with the device even in a use in which jigs are freely moved.
CONSTITUTION: A hydraulic pressure circuit 20 is provided with a hydraulic pump driving motor 61 to which electric power is supplied from a non-contact electric feeding device 30, a hydraulic pump 62 driven by means of the hydraulic pump driving motor 61, a pressure oil tank 63, a solenoid valve 64, a relief valve 65, an oil pressure gauge 66, and pilot check valves 67, 68 respectively for clamping and unclamping provided between the solenoid valve 64 and respective hydraulic cylinders 411-414. Further, a clamping pressure switch 69 provided between on the piping communicating the clamping pilot check valve 67 to the respective hydraulic cylinders 411-414, and an unclamping pressure switch 70 provided between on the piping communicating the unclamping pilot check valve 68 to the respective hydraulic cylinders 411-414 are provided.
Inventors:
HIRAI ATSUYUKI
HIROSE KENJI
HIRAGA YOSHIJI
NITSUTA JUJI
AOYAMA YOSHIO
HIROSE KENJI
HIRAGA YOSHIJI
NITSUTA JUJI
AOYAMA YOSHIO
Application Number:
JP5568392A
Publication Date:
September 03, 1997
Filing Date:
March 13, 1992
Export Citation:
Assignee:
YASUKAWA DENKI KK
AOYAMA YOSHIO
AOYAMA YOSHIO
International Classes:
B23Q3/06; B23Q7/00; F15B11/08; F15B21/08; (IPC1-7): B23Q3/06; B23Q3/06; B23Q7/00; F15B21/08
Domestic Patent References:
| JP60197331A | ||||
| JP5964250A | ||||
| JP4882483A |
Attorney, Agent or Firm:
Wakabayashi Tadashi
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