DE724542T1 - ELECTROHYDRAULIC LIFTING DEVICE FOR MOTOR VEHICLES - Google Patents
ELECTROHYDRAULIC LIFTING DEVICE FOR MOTOR VEHICLESInfo
- Publication number
- DE724542T1 DE724542T1 DE0724542T DE95900255T DE724542T1 DE 724542 T1 DE724542 T1 DE 724542T1 DE 0724542 T DE0724542 T DE 0724542T DE 95900255 T DE95900255 T DE 95900255T DE 724542 T1 DE724542 T1 DE 724542T1
- 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.)
- Pending
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
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.
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 (1)
Publication Number | Publication Date |
---|---|
DE724542T1 true DE724542T1 (en) | 1997-04-03 |
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 After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69410283T Expired - Fee Related DE69410283T2 (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)
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)
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. |
-
1993
- 1993-10-22 IT IT93BO000421A patent/IT1264250B1/en active IP Right Grant
-
1994
- 1994-10-19 EP EP95900255A patent/EP0724542B1/en not_active Expired - Lifetime
- 1994-10-19 DE DE0724542T patent/DE724542T1/en active Pending
- 1994-10-19 WO PCT/IT1994/000176 patent/WO1995011190A1/en active IP Right Grant
- 1994-10-19 AU AU81146/94A patent/AU8114694A/en not_active Abandoned
- 1994-10-19 AT AT95900255T patent/ATE166038T1/en not_active IP Right Cessation
- 1994-10-19 ES ES95900255T patent/ES2116062T3/en not_active Expired - Lifetime
- 1994-10-19 DE DE69410283T patent/DE69410283T2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
WO1995011190A1 (en) | 1995-04-27 |
EP0724542B1 (en) | 1998-05-13 |
EP0724542A1 (en) | 1996-08-07 |
DE69410283D1 (en) | 1998-06-18 |
ITBO930421A1 (en) | 1994-01-22 |
ATE166038T1 (en) | 1998-05-15 |
DE69410283T2 (en) | 1998-10-01 |
IT1264250B1 (en) | 1996-09-23 |
AU8114694A (en) | 1995-05-08 |
ES2116062T3 (en) | 1998-07-01 |
ITBO930421A0 (en) | 1993-10-22 |
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