GB1347758A - Hydraulic device - Google Patents

Hydraulic device

Info

Publication number
GB1347758A
GB1347758A GB2847971A GB2847971A GB1347758A GB 1347758 A GB1347758 A GB 1347758A GB 2847971 A GB2847971 A GB 2847971A GB 2847971 A GB2847971 A GB 2847971A GB 1347758 A GB1347758 A GB 1347758A
Authority
GB
United Kingdom
Prior art keywords
pistons
valve
rams
cylinders
cylinder
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.)
Expired
Application number
GB2847971A
Original Assignee
Aoki K
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
Priority to JP5207770 priority Critical
Application filed by Aoki K filed Critical Aoki K
Publication of GB1347758A publication Critical patent/GB1347758A/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/22Synchronisation of the movement of two or more servomotors

Abstract

1347758 Hydraulic apparatus K AOKI 17 June 1971 [17 June 1970] 28479/71 Heading F1P In order to obtain synchronous movement of the pistons of a pair of rams 1, 1', the lower end of each ram is connected by a line 8, 8' and a reversing valve 3, 3' to one end of a cylinder 5, 5' the other end of the cylinder being connected via valve 3, 3' to a distributing valve 4 for connection to a pressure source or a drain, each cylinder 5, 5' having a piston 6, 6' therein, the pistons 6, 6' being rigidly connected by their rods and ties 7 to move in unison. To raise the ram pistons, as shown, pressure fluid is supplied via valves 3, 3' to one end of the cylinders 5, 5', the pistons, 6, 6' expelling fluid from the other ends of the cylinders and into the rams 1, 1'. At the end of a stroke of the pistons 6, 6', the valves 3, 3' are electrically actuated and pressure fluid now reverses the movement of pistons 6, 6' displacing a further amount of fluid into the rams 1, 1'. Valve 4 is actuated to lower the ram pistons. In a modification, Fig. 4, (not shown), the cylinders 5, 5' are axially aligned and the pistons 6, 6' are mounted on a common piston rod.
GB2847971A 1970-06-17 1971-06-17 Hydraulic device Expired GB1347758A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5207770 1970-06-17

Publications (1)

Publication Number Publication Date
GB1347758A true GB1347758A (en) 1974-02-27

Family

ID=12904739

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2847971A Expired GB1347758A (en) 1970-06-17 1971-06-17 Hydraulic device

Country Status (3)

Country Link
US (1) US3769881A (en)
DE (1) DE2129322C3 (en)
GB (1) GB1347758A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4523886A (en) * 1982-01-13 1985-06-18 Towmotor Corporation Container handler with programmed electro-hydraulic control circuit
GB2244521A (en) * 1990-04-24 1991-12-04 Peter Arnold Mishcon Structure pivotable by hydraulic rams
GB2403512A (en) * 2001-05-03 2005-01-05 Clear Well Subsea Ltd Hydraulic piston assembly
US7441993B2 (en) 2001-05-03 2008-10-28 Clear Well Subsea Limited Making connections to pipes under pressure
CN102852871A (en) * 2012-09-19 2013-01-02 中国核动力研究设计院 Hydraulic system for jacking top cover in loosening reactor top cover

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2631479A1 (en) * 1976-07-13 1978-01-19 Transform Verstaerkungsmasch Working piston device
US4162750A (en) * 1977-09-19 1979-07-31 Normand Demers Measuring and dispensing apparatus
US4452328A (en) * 1981-11-20 1984-06-05 Applied Power Inc. Cabtilt system with synchronizing valve
DE3205666A1 (en) * 1982-02-17 1983-08-25 Gewerk Eisenhuette Westfalia Device for controlling hydraulic thrust-piston transmissions
DE3222051C2 (en) * 1982-06-11 1984-10-11 Bochumer Eisenhuette Heintzmann Gmbh & Co Kg, 4630 Bochum, De
AT377833B (en) * 1983-06-17 1985-05-10 Achleitner Herbert Drive arrangement with two or more hydraulic cylinder piston units
SE444469B (en) * 1985-03-05 1986-04-14 Nilsson Nils Enar Device for the synchronized hydraulfluidumforsorjning of two or more hydraulic motors
IT1187790B (en) * 1985-06-24 1987-12-23 Corghi Elettromecc Spa hydraulic control system for bridges lifters of motor vehicles in general
US6363832B1 (en) 2000-06-21 2002-04-02 Caterpillar Inc. Method and apparatus for minimizing loader frame stress
SE517223C2 (en) * 2000-09-20 2002-05-14 Morphic Technologies Ab The hydraulic arrangement for synchronizing at least two cooperating hydraulic pistons
US6763916B2 (en) * 2002-04-12 2004-07-20 Delaware Capital Formation, Inc. Method and apparatus for synchronizing a vehicle lift
US7134280B2 (en) * 2004-02-09 2006-11-14 J.R. Automation Technologies, Llc Hydraulic system for synchronized extension of multiple cylinders
US7322190B2 (en) 2004-02-09 2008-01-29 Jr Automation Technologies Llc Hydraulic system for synchronized extension of multiple cylinders
US7047738B2 (en) * 2004-02-09 2006-05-23 Jr Automation Technologies, Llc Hydraulic system for synchronized extension of multiple cylinders
US7926410B2 (en) * 2007-05-01 2011-04-19 J.R. Automation Technologies, L.L.C. Hydraulic circuit for synchronized horizontal extension of cylinders
IT1402277B1 (en) * 2010-09-13 2013-08-28 Fiorese A device for detecting the mutual difference in height of the load supports in vehicles for vehicle lifts
US8920145B2 (en) 2010-11-29 2014-12-30 Gta Innovation, Llc Synchronized hydraulic power module
US10087958B2 (en) 2012-04-19 2018-10-02 Cascade Corporation Fluid power control system for mobile load handling equipment
CN104314907A (en) * 2014-10-12 2015-01-28 郑州大学 Hydraulic system for jacking pipe
CN106015159B (en) * 2016-07-12 2019-01-18 天津优瑞纳斯液压机械有限公司 A kind of non-isometric(al) synchronous distributor hydraulic cylinder
CN109281884A (en) * 2018-11-27 2019-01-29 中国葛洲坝集团第二工程有限公司 Template synchronous hydraulic lifting control system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1831238A (en) * 1928-02-29 1931-11-10 Oilgear Co Multiple hydraulic drive
US2410603A (en) * 1944-09-01 1946-11-05 Paul P M Dubosclard Forming roll
DE1044625B (en) * 1957-04-25 1958-11-20 Pumpenfabrik Urach Means for controlling the synchronous operation of multiple hydraulically actuated working piston

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4523886A (en) * 1982-01-13 1985-06-18 Towmotor Corporation Container handler with programmed electro-hydraulic control circuit
GB2244521A (en) * 1990-04-24 1991-12-04 Peter Arnold Mishcon Structure pivotable by hydraulic rams
GB2403512A (en) * 2001-05-03 2005-01-05 Clear Well Subsea Ltd Hydraulic piston assembly
GB2403512B (en) * 2001-05-03 2005-07-06 Clear Well Subsea Ltd Hydraulic piston assembly
US7441993B2 (en) 2001-05-03 2008-10-28 Clear Well Subsea Limited Making connections to pipes under pressure
CN102852871A (en) * 2012-09-19 2013-01-02 中国核动力研究设计院 Hydraulic system for jacking top cover in loosening reactor top cover
CN102852871B (en) * 2012-09-19 2014-12-10 中国核动力研究设计院 Hydraulic system for jacking top cover in loosening reactor top cover

Also Published As

Publication number Publication date
DE2129322C3 (en) 1973-10-11
US3769881A (en) 1973-11-06
DE2129322B2 (en) 1973-03-29
DE2129322A1 (en) 1971-12-30

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee