DE69410283T2 - ELECTROHYDRAULIC LIFTING DEVICE FOR MOTOR VEHICLES - Google Patents

ELECTROHYDRAULIC LIFTING DEVICE FOR MOTOR VEHICLES

Info

Publication number
DE69410283T2
DE69410283T2 DE69410283T DE69410283T DE69410283T2 DE 69410283 T2 DE69410283 T2 DE 69410283T2 DE 69410283 T DE69410283 T DE 69410283T DE 69410283 T DE69410283 T DE 69410283T DE 69410283 T2 DE69410283 T2 DE 69410283T2
Authority
DE
Germany
Prior art keywords
main cylinder
fluid
hydraulic
cylinder
motor vehicles
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 - Fee Related
Application number
DE69410283T
Other languages
German (de)
Other versions
DE69410283D1 (en
Inventor
Fausto Manganelli
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.)
Ravaglioli SpA
Original Assignee
Ravaglioli SpA
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 Ravaglioli SpA filed Critical Ravaglioli SpA
Application granted granted Critical
Publication of DE69410283D1 publication Critical patent/DE69410283D1/en
Publication of DE69410283T2 publication Critical patent/DE69410283T2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/08—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement hydraulically or pneumatically operated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/065—Scissor linkages, i.e. X-configuration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/10—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks
    • B66F7/16—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by one or more hydraulic or pneumatic jacks
    • B66F7/20—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by one or more hydraulic or pneumatic jacks by several jacks with means for maintaining the platforms horizontal during movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/22—Synchronisation of the movement of two or more servomotors

Abstract

The electrohydraulic lifting device for motor vehicles includes a pair of support platforms (1), respectively a first support platform and a second support platform, which are horizontal and parallel to each other, and mounted on respective tie rods (2) respectively actuated by a main cylinder (P1) and by a secondary cylinder (P2) fed by the same main cylinder (P1), under the control of a hydraulic control unit (16). The hydraulic control unit (16) is equipped with a synchronisation device (17) including a synchronization valve (18) aimed at connecting a hydraulic media conduit (20), delivering hydraulic fluid to the said main cylinder (P1), with a recycling conduit (22) leading a suitable volume of hydraulic fluid from the same main cylinder (P1) to the secondary cylinder (P2), so that to compensate the inadequacy of the delivery of fluid to the secondary cylinder (P2), or alternatively aimed at deviating an exceeding part of the recycled fluid to a discharge, respectively at the starting and when the support platforms (1) are getting into alignment at the floor level.
DE69410283T 1993-10-22 1994-10-19 ELECTROHYDRAULIC LIFTING DEVICE FOR MOTOR VEHICLES Expired - Fee Related DE69410283T2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT93BO000421A IT1264250B1 (en) 1993-10-22 1993-10-22 "ELECTRO-HYDRAULIC LIFT DEVICE FOR VEHICLES"
PCT/IT1994/000176 WO1995011190A1 (en) 1993-10-22 1994-10-19 Electrohydraulic lifting device for motor vehicles

Publications (2)

Publication Number Publication Date
DE69410283D1 DE69410283D1 (en) 1998-06-18
DE69410283T2 true DE69410283T2 (en) 1998-10-01

Family

ID=11339278

Family Applications (2)

Application Number Title Priority Date Filing Date
DE0724542T Pending DE724542T1 (en) 1993-10-22 1994-10-19 ELECTROHYDRAULIC LIFTING DEVICE FOR MOTOR VEHICLES
DE69410283T Expired - Fee Related DE69410283T2 (en) 1993-10-22 1994-10-19 ELECTROHYDRAULIC LIFTING DEVICE FOR MOTOR VEHICLES

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE0724542T Pending DE724542T1 (en) 1993-10-22 1994-10-19 ELECTROHYDRAULIC LIFTING DEVICE FOR MOTOR VEHICLES

Country Status (7)

Country Link
EP (1) EP0724542B1 (en)
AT (1) ATE166038T1 (en)
AU (1) AU8114694A (en)
DE (2) DE724542T1 (en)
ES (1) ES2116062T3 (en)
IT (1) IT1264250B1 (en)
WO (1) WO1995011190A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITVI980165A1 (en) * 1998-09-07 2000-03-07 Francesco Fiorese HYDRAULIC CIRCUIT FOR THE OPERATION OF SERVICE BRIDGES FOR THE LIFTING OF VEHICLES
IT1302678B1 (en) * 1998-10-15 2000-09-29 Texo Srl VOLUMETRIC DRIVE SYSTEM FOR VEHICLE LIFTING LINKS.
SE517223C2 (en) * 2000-09-20 2002-05-14 Morphic Technologies Ab Hydraulic device for synchronizing at least two cooperating hydraulic pistons
CN1331725C (en) * 2003-12-31 2007-08-15 深圳市汇银实业开发有限公司 Swing type lifter for assembling four link torsional force axial type synchro
CN103407933B (en) * 2012-09-03 2017-05-31 希实本株式会社 Vehicle lifting with synchronizing function
CN102992224A (en) * 2012-12-01 2013-03-27 江苏华宏科技股份有限公司 Multi-hydraulic-cylinder electro-hydraulic synchronous lifting system
CN110219841B (en) * 2019-06-14 2020-04-24 中国矿业大学(北京) Instantaneous unloading hydraulic system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3476016A (en) * 1967-10-20 1969-11-04 Cascade Corp Apparatus for producing coordinated,simultaneous actuation of multiple rams
DE3439292A1 (en) * 1984-10-26 1986-05-07 Otto Nußbaum GmbH & Co KG, 7640 Kehl Hydraulically operated lifting device, especially lifting platform for motor vehicles
US5072649A (en) * 1991-01-07 1991-12-17 Laghi Aldo A Double actuator with bypass lines for synchronized movement
NL9200686A (en) * 1992-04-13 1993-11-01 Stertil Bv APPARATUS WITH SIMULTANEOUS HYDRAULIC JACKS.

Also Published As

Publication number Publication date
EP0724542A1 (en) 1996-08-07
DE724542T1 (en) 1997-04-03
ITBO930421A0 (en) 1993-10-22
DE69410283D1 (en) 1998-06-18
WO1995011190A1 (en) 1995-04-27
AU8114694A (en) 1995-05-08
EP0724542B1 (en) 1998-05-13
ATE166038T1 (en) 1998-05-15
ITBO930421A1 (en) 1994-01-22
ES2116062T3 (en) 1998-07-01
IT1264250B1 (en) 1996-09-23

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee