IT1264250B1 - "ELECTRO-HYDRAULIC LIFT DEVICE FOR VEHICLES" - Google Patents

"ELECTRO-HYDRAULIC LIFT DEVICE FOR VEHICLES"

Info

Publication number
IT1264250B1
IT1264250B1 IT93BO000421A ITBO930421A IT1264250B1 IT 1264250 B1 IT1264250 B1 IT 1264250B1 IT 93BO000421 A IT93BO000421 A IT 93BO000421A IT BO930421 A ITBO930421 A IT BO930421A IT 1264250 B1 IT1264250 B1 IT 1264250B1
Authority
IT
Italy
Prior art keywords
cylinder
fluid
electro
hydraulic
platforms
Prior art date
Application number
IT93BO000421A
Other languages
Italian (it)
Inventor
Fausto Manganelli
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
Priority to IT93BO000421A priority Critical patent/IT1264250B1/en
Publication of ITBO930421A0 publication Critical patent/ITBO930421A0/en
Publication of ITBO930421A1 publication Critical patent/ITBO930421A1/en
Priority to AU81146/94A priority patent/AU8114694A/en
Priority to DE69410283T priority patent/DE69410283T2/en
Priority to EP95900255A priority patent/EP0724542B1/en
Priority to PCT/IT1994/000176 priority patent/WO1995011190A1/en
Priority to ES95900255T priority patent/ES2116062T3/en
Priority to DE0724542T priority patent/DE724542T1/en
Priority to AT95900255T priority patent/ATE166038T1/en
Application granted granted Critical
Publication of IT1264250B1 publication Critical patent/IT1264250B1/en

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

Il dispositivo sollevatore elettroidraulico per autoveicoli comprende una coppia di pedane 1a, 1b, rispettivamente prima e seconda, orizzontalmente parallele, montate su relativi biellismi 2 e azionate rispettivamente da un cilindro principale P1 e da un cilindro condotto P2 alimentato dallo stesso cilindro principale P1, tramite una centralina idraulica 16. La centralina idraulica 16 prevede un dispositivo di sincronizzazione 17 dotato di una valvola 18 atta a mettere in comunicazione, nelle fasi di spunto e di allineamento a terra di dette pedane 1a, 1b, un condotto 20 di mandata del fluido idraulico di azionamento del cilindro principale P1 con un condotto 22 di ricircolo di un opportuno volume di fluido dallo stesso cilindro P1 al cilindro condotto P2, in maniera da integrare la mandata di fluido al cilindro P2 stesso o alternativamente da deviare allo scarico una parte in eccesso di detto volume di fluido di ricircolo.The electro-hydraulic lifting device for motor vehicles comprises a pair of platforms 1a, 1b, respectively first and second, horizontally parallel, mounted on relative connecting rods 2 and operated respectively by a main cylinder P1 and a driven cylinder P2 powered by the same main cylinder P1, through a hydraulic control unit 16. The hydraulic control unit 16 provides a synchronization device 17 equipped with a valve 18 suitable for communicating, in the starting and ground alignment phases of said platforms 1a, 1b, a conduit 20 for delivery of the hydraulic fluid for driving the main cylinder P1 with a conduit 22 for recirculating a suitable volume of fluid from the same cylinder P1 to the driven cylinder P2, so as to integrate the delivery of fluid to the cylinder P2 itself or alternatively to divert an excess of said circulating fluid volume.

IT93BO000421A 1993-10-22 1993-10-22 "ELECTRO-HYDRAULIC LIFT DEVICE FOR VEHICLES" IT1264250B1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
IT93BO000421A IT1264250B1 (en) 1993-10-22 1993-10-22 "ELECTRO-HYDRAULIC LIFT DEVICE FOR VEHICLES"
AT95900255T ATE166038T1 (en) 1993-10-22 1994-10-19 ELECTROHYDRAULIC LIFTING DEVICE FOR MOTOR VEHICLES
EP95900255A EP0724542B1 (en) 1993-10-22 1994-10-19 Electrohydraulic lifting device for motor vehicles
DE69410283T DE69410283T2 (en) 1993-10-22 1994-10-19 ELECTROHYDRAULIC LIFTING DEVICE FOR MOTOR VEHICLES
AU81146/94A AU8114694A (en) 1993-10-22 1994-10-19 Electrohydraulic lifting device for motor vehicles
PCT/IT1994/000176 WO1995011190A1 (en) 1993-10-22 1994-10-19 Electrohydraulic lifting device for motor vehicles
ES95900255T ES2116062T3 (en) 1993-10-22 1994-10-19 ELECTRO-HYDRAULIC LIFTING DEVICE FOR AUTOMOBILE VEHICLES.
DE0724542T DE724542T1 (en) 1993-10-22 1994-10-19 ELECTROHYDRAULIC LIFTING DEVICE FOR MOTOR VEHICLES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT93BO000421A IT1264250B1 (en) 1993-10-22 1993-10-22 "ELECTRO-HYDRAULIC LIFT DEVICE FOR VEHICLES"

Publications (3)

Publication Number Publication Date
ITBO930421A0 ITBO930421A0 (en) 1993-10-22
ITBO930421A1 ITBO930421A1 (en) 1994-01-22
IT1264250B1 true IT1264250B1 (en) 1996-09-23

Family

ID=11339278

Family Applications (1)

Application Number Title Priority Date Filing Date
IT93BO000421A IT1264250B1 (en) 1993-10-22 1993-10-22 "ELECTRO-HYDRAULIC LIFT DEVICE FOR 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
EP0724542B1 (en) 1998-05-13
WO1995011190A1 (en) 1995-04-27
EP0724542A1 (en) 1996-08-07
DE724542T1 (en) 1997-04-03
DE69410283D1 (en) 1998-06-18
ATE166038T1 (en) 1998-05-15
AU8114694A (en) 1995-05-08
ES2116062T3 (en) 1998-07-01
DE69410283T2 (en) 1998-10-01
ITBO930421A1 (en) 1994-01-22
ITBO930421A0 (en) 1993-10-22

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19961031