JPS57184704A - Driving circuit for actuator - Google Patents

Driving circuit for actuator

Info

Publication number
JPS57184704A
JPS57184704A JP6958881A JP6958881A JPS57184704A JP S57184704 A JPS57184704 A JP S57184704A JP 6958881 A JP6958881 A JP 6958881A JP 6958881 A JP6958881 A JP 6958881A JP S57184704 A JPS57184704 A JP S57184704A
Authority
JP
Japan
Prior art keywords
valve
actuator
main circuit
brake
circuit
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.)
Granted
Application number
JP6958881A
Other languages
Japanese (ja)
Other versions
JPH0155321B2 (en
Inventor
Hiroshi Murata
Takahiro Kobayashi
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.)
Kobe Steel Ltd
Nabco Ltd
Original Assignee
Kobe Steel Ltd
Nabco 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 Kobe Steel Ltd, Nabco Ltd filed Critical Kobe Steel Ltd
Priority to JP6958881A priority Critical patent/JPS57184704A/en
Publication of JPS57184704A publication Critical patent/JPS57184704A/en
Publication of JPH0155321B2 publication Critical patent/JPH0155321B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Operation Control Of Excavators (AREA)
  • Braking Systems And Boosters (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

PURPOSE: To produce braking force corresponding with an actual load applied by a method wherein a residual pressure valve is provided in a main driving circuit for an actuator. In addition to it, the pilot section of a brake valve which is located on the understream side of the residual pressure valve is connected to a pilot valve which is operated by pressure difference of the fluid in a main circuit.
CONSTITUTION: Upon switching a directional control valve 2 to the 2c-position, hydraulic pressue from a pump 1 is delivered into an actuator 4 through a main circuit on the upstream side 3a2, the residual pressure valve 17a and a main circuit on the downstream side 3a1 to cause it to move in the direction of E. When the directional control valve 2 is switched to the center valve position 2a to stop the actuator, the actuator 4 continues movement in the direction of E by its inertia but fluid delivery to a main circuit 3b is diverted into the main circuit 3a1 through a brake circuit 19b, a throttle valve 31b provided on the brake valve 8b, a passage 18 and a check valve 6a. Namely, braking force controlled by restriction of flow through the brake valve 8b opposes against loading.
COPYRIGHT: (C)1982,JPO&Japio
JP6958881A 1981-05-08 1981-05-08 Driving circuit for actuator Granted JPS57184704A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6958881A JPS57184704A (en) 1981-05-08 1981-05-08 Driving circuit for actuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6958881A JPS57184704A (en) 1981-05-08 1981-05-08 Driving circuit for actuator

Publications (2)

Publication Number Publication Date
JPS57184704A true JPS57184704A (en) 1982-11-13
JPH0155321B2 JPH0155321B2 (en) 1989-11-24

Family

ID=13407131

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6958881A Granted JPS57184704A (en) 1981-05-08 1981-05-08 Driving circuit for actuator

Country Status (1)

Country Link
JP (1) JPS57184704A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5486077A (en) * 1977-12-20 1979-07-09 Nippon Air Brake Co Ltd Actuator brake circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5486077A (en) * 1977-12-20 1979-07-09 Nippon Air Brake Co Ltd Actuator brake circuit

Also Published As

Publication number Publication date
JPH0155321B2 (en) 1989-11-24

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