EP2275380A1 - Fahrzeugaufzug - Google Patents

Fahrzeugaufzug Download PDF

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Publication number
EP2275380A1
EP2275380A1 EP09165305A EP09165305A EP2275380A1 EP 2275380 A1 EP2275380 A1 EP 2275380A1 EP 09165305 A EP09165305 A EP 09165305A EP 09165305 A EP09165305 A EP 09165305A EP 2275380 A1 EP2275380 A1 EP 2275380A1
Authority
EP
European Patent Office
Prior art keywords
platform
vehicle lift
actuators
vehicle
hydraulic 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.)
Withdrawn
Application number
EP09165305A
Other languages
English (en)
French (fr)
Inventor
Johannes Jan Nijmeijer
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.)
Ingenieursbureau Moderniek BV
Original Assignee
Ingenieursbureau Moderniek BV
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 Ingenieursbureau Moderniek BV filed Critical Ingenieursbureau Moderniek BV
Priority to EP09165305A priority Critical patent/EP2275380A1/de
Publication of EP2275380A1 publication Critical patent/EP2275380A1/de
Withdrawn legal-status Critical Current

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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
    • B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
    • B66F17/006—Safety devices, e.g. for limiting or indicating lifting force for working platforms
    • 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
    • B66F7/02—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms suspended from ropes, cables, or chains or screws and movable along pillars
    • B66F7/025—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms suspended from ropes, cables, or chains or screws and movable along pillars screw 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
    • B66F7/02—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms suspended from ropes, cables, or chains or screws and movable along pillars
    • B66F7/04—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms suspended from ropes, cables, or chains or screws and movable along pillars 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
    • B66F7/22—Lifting frames, e.g. for lifting vehicles; Platform lifts with tiltable platforms

Definitions

  • the present invention relates to a vehicle lift.
  • vehicle lifts are known in the art, for example scissors lifts and other lifts that are applied in car repair garages.
  • One of the requirements of a vehicle lift is that the vehicle is maintained in a stable position during lifting.
  • the object of the invention is to provide a vehicle lift which fulfils the mentioned requirement and that can be controlled in a simple way.
  • the vehicle lift which comprises a platform for supporting a vehicle, three actuators for lifting the platform, which actuators can be operated independently from each other, wherein the actuators are engaged to the platform such that the actuators support the platform at three resultant support locations, wherein the resultant support locations form corners of a virtual triangle as seen from above.
  • the platform can be lifted by exerting three upwardly directed resultant forces at the resultant support locations of the platform. Since the actuators can be operated independently from each other the resultant forces can be controlled independently from each other. Because of the three-point support that is formed by the resultant support locations a relatively simple lifting control is possible since basically a deviation of the inclination between the resultant support locations should be monitored and adjusted during operation of the vehicle lift.
  • At least one of the actuators may comprise at least two upwardly displaceable elements which are spaced from each other in horizontal direction and operatively coupled to each other. This is advantageous in case of a heavy load, since it may be desirable to have an actuator that comprises more than one upwardly displaceable element in order to spread the resultant force over different sub-actuators or displaceable elements.
  • the displaceable elements together still support the platform at one of the resultant support locations.
  • Each of the displaceable elements may be engaged to the platform at engaging locations which are spaced from each other in horizontal direction.
  • each of the displaceable elements exerts a force on the platform and the forces together form the resultant force which acts on the resultant support location.
  • the displaceable elements can be located along at least a longitudinal side of the platform and/or the displaceable elements can be located at opposite sides of the platform as seen in lateral direction of the platform extending perpendicularly to a longitudinal direction thereof. This typically depends on the expected concentrations of the load on the platform.
  • the displaceable element may comprise a hydraulic cylinder/piston combination, but alternative displaceable elements are also conceivable.
  • a rotatable wheel is mounted to the hydraulic piston and a belt is attached to both the hydraulic cylinder and the platform and guided by the wheel. This appears to be a robust and reliable structure of the vehicle lift.
  • the vehicle lift may be provided with at least an inclination sensor for detecting an inclination angle between two resultant support locations and a controller for controlling at least an actuator so as to synchronize the actuators during a vertical displacement of the platform. Due to this feature the platform, orientation can be controlled accurately during lifting.
  • the vehicle lift comprises at least two inclination sensors for measuring the inclinations of the platform in a longitudinal and lateral direction, since this provides the opportunity to lift the platform in a stable orientation on the basis of the sensor signals.
  • the embodiment of the vehicle lift 1 as shown comprises a platform 3 for supporting the vehicle 2.
  • the platform 3 has a rectangular shape as seen from above.
  • the vehicle 2 is able to drive onto the platform 3 in a longitudinal direction thereof.
  • In front of the platform the roadway is adapted to create a gradual transfer for driving the vehicle 2 onto the platform 3. This is also the case at the back side of the platform 3 as seen in longitudinal direction thereof.
  • the platform 3 is only accessible at one short side thereof as illustrated in Figs. 1a and 1b .
  • the vehicle lift 1 as shown in Figs. 1a-1c and 2 is provided with six pillars 4 which extend substantially vertically. Three pillars 4 are located at one side of the platform 3 and three pillars 4 are located at the opposite side of the platform 3.
  • the platform 3 is moveable in vertical direction between the pillars 4. Adjacent pillars 4 in longitudinal direction of the platform 3 are attached to each other by longitudinal bars 5.
  • Each of the pillars 4 comprises a displaceable element, which, in the present embodiment, comprises a hydraulic cylinder 6 and piston 7 which is moveable with respect to the hydraulic cylinder 6.
  • a freely rotatable wheel 8 is mounted to the piston 7.
  • a belt in the form of a chain 9 is engaged to the hydraulic cylinder 6 and the platform 3 at an engaging location 10, and guided by the wheel 8.
  • the displaceable element may be an electrically driven screwable element or a winch, for example.
  • the embodiment as shown in the Figs. comprises three pairs of hydraulic cylinder/piston combinations 6, 7.
  • each pair the hydraulic cylinder/piston combinations 6, 7 are spaced from each other in horizontal direction.
  • the hydraulic cylinder/piston combinations 6, 7 of a pair are operatively coupled to each other such that their hydraulic pressure is equal. Due to their coupling each pair forms a resultant support location 11 which will be located between the engaging locations 10 of the respective corresponding hydraulic cylinder/piston combinations 6, 7.
  • Each of the three pairs of hydraulic cylinder/piston combinations 6, 7 can be operated independently from each other such that exactly three resultant support locations 11 are present.
  • the platform 3 is supported by three actuators in the form of three pairs of hydraulic cylinder/piston combinations 6, 7 at three resultant support locations 11.
  • the resultant support locations 11 form corners of a virtual triangle as seen from above. This is illustrated in Fig. 1a . Due to the symmetric dimensions of the embodiment as shown the virtual triangle has two sides of substantially equal lengths, but alternative shapes are conceivable.
  • the embodiment of the vehicle lift 1 as shown is suitable for lifting a truck including a trailer 2
  • this region of the platform 3 is supported by four hydraulic cylinder/piston combinations 6, 7 in total.
  • At the front side of the truck 2 less lifting power is required, which means that only one pair of hydraulic cylinder/piston combinations 6, 7 is applied.
  • the hydraulic cylinder/piston combinations 6, 7 are located at opposite sides of the platform 3 as seen in lateral direction of the platform 3.
  • Fig. 2 shows a hydraulic fluid control system of the vehicle lift 1.
  • Each pair of hydraulic cylinder/piston combinations 6, 7 are in fluid communication with each other and also with a source of hydraulic fluid 12 via a pump 13 and a valve 14.
  • the hydraulic fluid circuit also comprises fluid line leakage protection valves 15. Furthermore, a pressure sensor will indicated the end of lowering or jamming conditions.
  • the platform orientation can be controlled during vertical displacement by a rough height control in the form of a balancer and a more accurate control on the basis of a signal from two inclination sensors, one for measuring an inclination of the platform 3 in longitudinal direction and one for measuring an inclination thereof in lateral direction.
  • the invention provides a vehicle lift which can be operated in a relatively simple way.
  • the invention is not limited to the embodiment shown in the drawings and described hereinbefore, which may be varied in different manners within the scope of the claims and its technical equivalents.
  • the platform may have alternative shapes instead of a rectangular flat type. Pairs of hydraulic cylinder/piston combinations may also be replaced by one, or three or more hydraulic cylinder/piston combinations so as to form a resultant support location.
  • the wheel and chain may be replaced by a gear and toothed belt, for example.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
EP09165305A 2009-07-13 2009-07-13 Fahrzeugaufzug Withdrawn EP2275380A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09165305A EP2275380A1 (de) 2009-07-13 2009-07-13 Fahrzeugaufzug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09165305A EP2275380A1 (de) 2009-07-13 2009-07-13 Fahrzeugaufzug

Publications (1)

Publication Number Publication Date
EP2275380A1 true EP2275380A1 (de) 2011-01-19

Family

ID=41395672

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09165305A Withdrawn EP2275380A1 (de) 2009-07-13 2009-07-13 Fahrzeugaufzug

Country Status (1)

Country Link
EP (1) EP2275380A1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102234092A (zh) * 2011-04-20 2011-11-09 山东力高升降机械有限公司 升降平台防坠落机构
CN102234091A (zh) * 2011-04-20 2011-11-09 山东力高升降机械有限公司 四桅柱铝合金式液压升降平台
CN102556905A (zh) * 2012-01-16 2012-07-11 山西东杰智能物流装备股份有限公司 具有同步随行功能的提升机
CN106348223A (zh) * 2016-10-08 2017-01-25 苏州威尔特铝合金升降机械有限公司 桅柱式高空作业平台链条断裂保护系统
CN107892247A (zh) * 2017-10-26 2018-04-10 盐城市利欣机械有限公司 一种应用于汽车维修的升降移动装置
CN113905974A (zh) * 2019-04-05 2022-01-07 奥斯克什公司 全电动剪刀式提升机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4320669A1 (de) * 1992-06-22 1994-01-20 Stertil Bv Fahrzeug-Hebebühne
JP2003118986A (ja) * 2001-10-19 2003-04-23 Nippon Koki Kk 重量物のリフタ装置
JP2006199493A (ja) * 2005-01-18 2006-08-03 Eijiro Toyoda 重量物の移動装置
WO2009026649A1 (en) * 2007-08-30 2009-03-05 Tf Poke Engineering Pty Ltd Jack

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4320669A1 (de) * 1992-06-22 1994-01-20 Stertil Bv Fahrzeug-Hebebühne
JP2003118986A (ja) * 2001-10-19 2003-04-23 Nippon Koki Kk 重量物のリフタ装置
JP2006199493A (ja) * 2005-01-18 2006-08-03 Eijiro Toyoda 重量物の移動装置
WO2009026649A1 (en) * 2007-08-30 2009-03-05 Tf Poke Engineering Pty Ltd Jack

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102234092A (zh) * 2011-04-20 2011-11-09 山东力高升降机械有限公司 升降平台防坠落机构
CN102234091A (zh) * 2011-04-20 2011-11-09 山东力高升降机械有限公司 四桅柱铝合金式液压升降平台
CN102556905A (zh) * 2012-01-16 2012-07-11 山西东杰智能物流装备股份有限公司 具有同步随行功能的提升机
CN106348223A (zh) * 2016-10-08 2017-01-25 苏州威尔特铝合金升降机械有限公司 桅柱式高空作业平台链条断裂保护系统
CN107892247A (zh) * 2017-10-26 2018-04-10 盐城市利欣机械有限公司 一种应用于汽车维修的升降移动装置
CN113905974A (zh) * 2019-04-05 2022-01-07 奥斯克什公司 全电动剪刀式提升机
CN113905974B (zh) * 2019-04-05 2024-05-14 奥斯克什公司 全电动剪刀式提升机

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