JPS5594003A - Selecting device for hydraulic cylinder - Google Patents

Selecting device for hydraulic cylinder

Info

Publication number
JPS5594003A
JPS5594003A JP169079A JP169079A JPS5594003A JP S5594003 A JPS5594003 A JP S5594003A JP 169079 A JP169079 A JP 169079A JP 169079 A JP169079 A JP 169079A JP S5594003 A JPS5594003 A JP S5594003A
Authority
JP
Japan
Prior art keywords
hydraulic cylinder
valve
ports
electromagnetic
selector valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP169079A
Other languages
Japanese (ja)
Inventor
Yasuyuki Itou
Shoichi Ide
Hideo Suzuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Caterpillar Mitsubishi Ltd
Original Assignee
Caterpillar Mitsubishi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Caterpillar Mitsubishi Ltd filed Critical Caterpillar Mitsubishi Ltd
Priority to JP169079A priority Critical patent/JPS5594003A/en
Publication of JPS5594003A publication Critical patent/JPS5594003A/en
Pending legal-status Critical Current

Links

Landscapes

  • Fluid-Pressure Circuits (AREA)

Abstract

PURPOSE: To improve the performance of a hydraulic cylinder by connecting both ports of the hydraulic cylinder with a short circuit passage having a shut valve to synchronously operate an electromagnetic valve and an electromagnetic selector valve.
CONSTITUTION: When an electromagnetic selector valve 3 is actuated, the pressure oil is supplied to one of the ports of a hydraulic cylinder 2 through the selector valve 3 and the pressure oil exhausted from the other port is returned to a drain tank 17 through the selectof valve 3 while an operating lever 5 is shifted to either A or B position by the piston rod 4. In this state, the signal pressure of a oil pressure pump 1 to pilot check valves 11 and 12 is stopped by an electromagnetic valve 3 and the short circuit 8 connecting the ports of the hydraulic cylinder 2 is intercepted.
COPYRIGHT: (C)1980,JPO&Japio
JP169079A 1979-01-09 1979-01-09 Selecting device for hydraulic cylinder Pending JPS5594003A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP169079A JPS5594003A (en) 1979-01-09 1979-01-09 Selecting device for hydraulic cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP169079A JPS5594003A (en) 1979-01-09 1979-01-09 Selecting device for hydraulic cylinder

Publications (1)

Publication Number Publication Date
JPS5594003A true JPS5594003A (en) 1980-07-17

Family

ID=11508507

Family Applications (1)

Application Number Title Priority Date Filing Date
JP169079A Pending JPS5594003A (en) 1979-01-09 1979-01-09 Selecting device for hydraulic cylinder

Country Status (1)

Country Link
JP (1) JPS5594003A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5117950A (en) * 1988-11-14 1992-06-02 Kabushiki Kaisha Kobe Seiko Sho Hydraulic shock absorber controller for a wheel crane
US5251705A (en) * 1992-03-19 1993-10-12 Deere & Company Electrical trigger for quick drop valve
US5351601A (en) * 1992-05-04 1994-10-04 Control Concepts, Inc. Hydraulic control system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5117950A (en) * 1988-11-14 1992-06-02 Kabushiki Kaisha Kobe Seiko Sho Hydraulic shock absorber controller for a wheel crane
US5251705A (en) * 1992-03-19 1993-10-12 Deere & Company Electrical trigger for quick drop valve
US5351601A (en) * 1992-05-04 1994-10-04 Control Concepts, Inc. Hydraulic control system

Similar Documents

Publication Publication Date Title
EP0608415A4 (en) Hydraulic circuit having pressure compensation valve.
JPS5594003A (en) Selecting device for hydraulic cylinder
JPS54156985A (en) Safety device of hydraulic circuit having a plurality of actuators
JPS5447974A (en) Device for buffering hydraulic cylinder
JPS5768543A (en) Control device for engine
JPS5597573A (en) Operation check valve
JPS5594068A (en) Hydraulic pressure control valve
JPS55163304A (en) Change-over device for reciprocation in double-acting cylinder
JPS579303A (en) Pressure control circuit for pressure intensifier
JPS56156505A (en) Fluid circuit
JPS54121378A (en) Hydraulic cylinder drive circuit
JPS5779306A (en) Hydraulic circuit
JPS55109804A (en) Cylinder control device
JPS555132A (en) Hydraulic high speed interlock press with manual operation
JPS6446001A (en) Hydraulic elevation control device for tractor and the like
JPS5614603A (en) Control circuit for actuator
JPS5783702A (en) Fluid pressure differential circuit
JPS579304A (en) Pressure control circuit for pressure intensifier
JPS55109803A (en) Cylinder control device
FR2437513A1 (en) Slide valve for high pressure hydraulic system - has pilot valve operating on separate circuit to reduce leakage
JPS5510131A (en) Leakproof directional control valve
JPS6414433A (en) Boom operator of back hoe
JPS55108540A (en) Bucket operating circuit
JPS5655702A (en) Hydraulic cylinder cushion device also serving as speed control function
JPS5686207A (en) Driving mechanism by fluid pressure