JPS571803A - Preventing apparatus for backing of inertial body in hydraulic control circuit with inertial body - Google Patents

Preventing apparatus for backing of inertial body in hydraulic control circuit with inertial body

Info

Publication number
JPS571803A
JPS571803A JP7351380A JP7351380A JPS571803A JP S571803 A JPS571803 A JP S571803A JP 7351380 A JP7351380 A JP 7351380A JP 7351380 A JP7351380 A JP 7351380A JP S571803 A JPS571803 A JP S571803A
Authority
JP
Japan
Prior art keywords
inertial body
valve
backing
body stops
hydraulic motor
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
JP7351380A
Other languages
Japanese (ja)
Inventor
Hirokatsu Sakamoto
Norimoto Yoshida
Masao Ohashi
Shuji Sasaya
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.)
Kawasaki Heavy Industries Ltd
Original Assignee
Kawasaki Heavy Industries 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 Kawasaki Heavy Industries Ltd filed Critical Kawasaki Heavy Industries Ltd
Priority to JP7351380A priority Critical patent/JPS571803A/en
Publication of JPS571803A publication Critical patent/JPS571803A/en
Pending legal-status Critical Current

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  • Fluid-Pressure Circuits (AREA)

Abstract

PURPOSE: To enable reliable elimination of backing of inertial body at a time of stopage, by a method wherein two lines, connecting together a hydraulic motor and a counter balance valve, are coupled together by means of an ON-OFF valve with a throttle, and backing energy, produced immediately after the inertial body stops, is absorbed by switching said valve.
CONSTITUTION: Main lines 7 and 8, connecting together the hydraulic motor 6, coupling with the inertial body, and a counter balance valve 4, and connected together through a 2-port, 2-position ON-OFF valve 10 incorporating a throttle 9. With an operator watching the movement of the inertial body, the ON-OFF valve 10 is changed over to ON from OFF immediately before the inertial body stops. A hydraulic oil is caused to circulate in a close circuit for connecting together the ON-OFF valve 10 and the hydraulic motor 6 even after a cross over relief valve 5 is closed, and this minimizes the decceleration immediately before the inertial body stops. When the inertial body stops and runs short of the backing energy, the ON- OFF valve 10 is switched to OFF. This prevents the occurrence of backing if the inertial body stops once.
COPYRIGHT: (C)1982,JPO&Japio
JP7351380A 1980-05-30 1980-05-30 Preventing apparatus for backing of inertial body in hydraulic control circuit with inertial body Pending JPS571803A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7351380A JPS571803A (en) 1980-05-30 1980-05-30 Preventing apparatus for backing of inertial body in hydraulic control circuit with inertial body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7351380A JPS571803A (en) 1980-05-30 1980-05-30 Preventing apparatus for backing of inertial body in hydraulic control circuit with inertial body

Publications (1)

Publication Number Publication Date
JPS571803A true JPS571803A (en) 1982-01-07

Family

ID=13520396

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7351380A Pending JPS571803A (en) 1980-05-30 1980-05-30 Preventing apparatus for backing of inertial body in hydraulic control circuit with inertial body

Country Status (1)

Country Link
JP (1) JPS571803A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4682865A (en) * 1986-01-31 1987-07-28 Power Kinetics, Inc. Concave mirror apparatus and method of construction
EP0603421A1 (en) * 1992-07-14 1994-06-29 Hitachi Construction Machinery Co., Ltd. Inertial body driving unit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5117424U (en) * 1974-07-25 1976-02-07
JPS556962U (en) * 1978-06-28 1980-01-17

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5117424U (en) * 1974-07-25 1976-02-07
JPS556962U (en) * 1978-06-28 1980-01-17

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4682865A (en) * 1986-01-31 1987-07-28 Power Kinetics, Inc. Concave mirror apparatus and method of construction
EP0603421A1 (en) * 1992-07-14 1994-06-29 Hitachi Construction Machinery Co., Ltd. Inertial body driving unit
EP0603421A4 (en) * 1992-07-14 1994-08-31 Hitachi Construction Machinery Co., Ltd.
US5419132A (en) * 1992-07-14 1995-05-30 Hitachi Construction Machinery Co., Ltd. Inertial body drive mechanism

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