EP1680603B1 - Pont elevateur a deux verins hydrauliques - Google Patents

Pont elevateur a deux verins hydrauliques Download PDF

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Publication number
EP1680603B1
EP1680603B1 EP04789995A EP04789995A EP1680603B1 EP 1680603 B1 EP1680603 B1 EP 1680603B1 EP 04789995 A EP04789995 A EP 04789995A EP 04789995 A EP04789995 A EP 04789995A EP 1680603 B1 EP1680603 B1 EP 1680603B1
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EP
European Patent Office
Prior art keywords
lifting platform
platform according
hydraulic fluid
lifting
hydraulic
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.)
Not-in-force
Application number
EP04789995A
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German (de)
English (en)
Other versions
EP1680603A1 (fr
Inventor
Roland Hörnstein
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Individual
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Individual
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Publication of EP1680603A1 publication Critical patent/EP1680603A1/fr
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Publication of EP1680603B1 publication Critical patent/EP1680603B1/fr
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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
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
    • 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
    • F15B11/003—Systems with load-holding valves
    • 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
    • F15B11/06—Servomotor systems without provision for follow-up action; Circuits therefor involving features specific to the use of a compressible medium, e.g. air, steam
    • F15B11/072—Combined pneumatic-hydraulic systems
    • F15B11/0725—Combined pneumatic-hydraulic systems with the driving energy being derived from a pneumatic system, a subsequent hydraulic system displacing or controlling the output element
    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/26—Locking mechanisms
    • F15B15/261—Locking mechanisms using positive interengagement, e.g. balls and grooves, for locking in the end positions
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3052—Shuttle valves
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/321—Directional control characterised by the type of actuation mechanically
    • F15B2211/324—Directional control characterised by the type of actuation mechanically manually, e.g. by using a lever or pedal
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/46—Control of flow in the return line, i.e. meter-out control
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7107—Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being mechanically linked

Definitions

  • the invention relates to a 2-ram lift, as used for lifting of motor vehicle lifts in motor vehicle workshops.
  • the 2-Stempelhebühne is installed under the floor in the workshop floor, so that in the retracted state only the motor vehicle recording means can be seen.
  • Such a lift is from the DE-A-19824081 known.
  • the vehicles can be lifted by means of the 2-ram lift different levels to facilitate accessibility below the vehicle. A pit under the vehicle thus does not need to be present.
  • 2-ram lifts of the type mentioned above consist of two hydraulic cylinders arranged side by side in the longitudinal direction of the vehicle, a device for ensuring the synchronization of the two hydraulic cylinders, a lowering safeguard which prevents the two hydraulic cylinders from unintentionally lowering and a drive unit. Furthermore, a lift control and recording media for lifting the vehicle.
  • Hydraulic cylinders, synchronization device, anti-jacking device and often also the drive unit are installed in a watertight installation cassette.
  • the lift control is usually located on the front or side of the lift workstation.
  • the two recording media are on the extending parts of the Screwed hydraulic cylinder and are in the retracted state on the workshop floor.
  • Modern 2-ram lifts are designed as a reversing cylinder. They work in the so-called high pressure area, i. the operating pressure is usually over 100 bar.
  • the two piston rods - also called plunger - remain on the bottom of the mounting cassette.
  • the outside with a smooth surface provided cylinder tubes go through guides, which are bolted to the top of the mounting cassette from. In this way, it is very easy to connect the two extending cylinder tubes with a one- or multi-part cross-connection. This single or multi-part cross-connection ensures the synchronization of the two cylinder tubes and also prevents each of the two cylinder tube can rotate about its own longitudinal axis.
  • the drive of the lift is usually electro-hydraulic.
  • Hydraulic oil is usually used as the hydraulic medium. Since hydraulic oil is a water polluting liquid, the built-in cassettes are manufactured in dense form. If hydraulic oil escapes (eg in the case of leaks or leaks), the installation cassette serves as a catchment room, which must be regularly checked in accordance with regional regulations and checked for leaks.
  • Built-in cassettes are those made of steel and those made of plastic. Made of steel have the advantage that they are stable for transport, but when installed, the risk of corrosion, which is problematic when using oil as a hydraulic medium from an environmental point of view. The made of plastic are largely corrosion-resistant when installed. Transport, however, represents a considerable risk of damage and thus also environmental risk.
  • the drive unit of the lift is usually equipped with an electric motor. Depending on the local conditions - single-phase or three-phase network - and the existing power supply, an adjustment of the electric motor and possibly also the lift control is necessary.
  • the patent DE 198 24 08 1 C2 shows a 2-ram lift of this type with reversing cylinders in electro-hydraulic design.
  • the standing plungers are made of solid material, ie they are not hollow inside, eg formed as a tube. In particular, they do not serve to store the hydraulic fluid.
  • the publication 1 431 975 shows a pneumatic-hydraulic lifting unit in which the hydraulic fluid is stored within the lifting unit.
  • the disadvantage of this prior art is that two seals are required per lifting unit and at the lower end of the extending part of the lifting unit no mechanical coupling for a forced synchronization can be attached when the lifting unit z. B. is to be used for a two-stamp lift.
  • the German Utility Model DE-GM 1 933 273 shows a pneumatic-hydraulic lifting cylinder, in which the hydraulic fluid is housed in the extending plunger.
  • the disadvantages of this prior art are that it is necessary for the control valve to be located inside the plunger and for the control valve to be actuated to have a movable control line inside the plunger. Also in this lifting cylinder, no mechanical coupling for a forced synchronization can be attached to the lower end of the extending part of the lifting unit when the lifting unit z. B. is to be used for a two-stamp lift.
  • the object of the invention is to propose a pneumatic hydraulic two-station lift, which is safe and easy to service, which manages with little space and their production with reduced effort and reduced costs is possible.
  • This object is achieved on the basis of the prior art by the appropriate embodiment of a novel pneumatic-hydraulic reversing cylinder.
  • the 2-post lift according to the invention is characterized once by the fact that it is pneumatically driven, but still operated fully hydraulically.
  • Fully hydraulic means in this case, located in the interior of the two cylinder tubes - just like the electro-hydraulic drive - only the hydraulic fluid as a medium, no compressed air.
  • the 2-post lift according to the invention has a built-in cassette (1), which is installed under the floor and filled with soil, sand, gravel and lean concrete (20).
  • guides (2) are screwed, through which the two cylinder tubes (3) hydraulically up and down (17).
  • the cylinder tubes (3) have at the bottom against the standing plunger (4) inside a seal (21).
  • the cylinder tubes (3) are coupled to one another at their lower end (25), below the connection possibility (8) by means of a one-part or multipart cross-beam (5), so that a forced synchronization is created.
  • the plungers (4) are hollow inside.
  • a bent tube (6) is attached to the opening (6a).
  • This bent tube (6) is located in the interior of the plunger (4) and extends into the uppermost region (22) of the plunger (4).
  • This curved tube (6) and is open at the top (23).
  • compressed air (26) is passed into the uppermost region of the plunger (22).
  • the plungers (4) are in the retracted state to its upper region (22) and to just below the upper opening (23) of the bent tube (6) with hydraulic fluid (27), preferably filled with water.
  • the hydraulic fluid water (27) can be added additives that are environmentally friendly, counteract the development of odors and corrosion of metallic materials and promote a reduction in friction in sliding bearings and seals.
  • other organic liquids can be used as hydraulic fluid (27), which are similarly environmentally friendly, such as alcohol.
  • At least one of the two hydraulic lines (11) or (12) has to be designed to be movable either between the hydraulic valve (9) and the support piston (3) or between the hydraulic valve (9) and the plunger (4).
  • the interiors of the plunger (4) act as a kind of intermediate liquid container and store the necessary amount of liquid required to operate the lift.
  • the Operation of the lift takes place in the illustrated case via a lever control (13) according to the deadman principle. Another possibility would be the operation via hand or foot switch.
  • the compressed air (26) flows out of the interiors of the plunger (4) and the hydraulic fluid (27) loses pressurization by the compressed air (26).
  • the hydraulic fluid (27) flows back into the interior of the plunger (4) and the cylinder tubes (3) enter (17).
  • the hydraulic fluid (27) virtually always circulates in a closed circuit between the interiors of the plunger (4) and the interior of the cylinder tubes (3).
  • the pressurized discharge air can be at least partially made available to the compressed air generator as intake air so that it can not produce its compressed air generation with atmospheric air, but at least partially with biased, ie already pressurized air.
  • the unlocking cylinder (16) has a compression spring (16.1), which wants to press the claw of Absenk Anlagen (10.1) in the Absetzrasten (10.2) of the Absetzstange (10.3).
  • the compression spring (16.1) compressed and the claw of Absenk Anlagen (10.1) moves from the Absetzraste (10.2) of the Absetzstange (10.3). The lift can move down.
  • Fig. 1 is the lowering safeguard (10) in the locked state, in Fig. 2 in unlocked condition and in Fig. 3 shown symbolically.
  • All components of the lift except for the lift control, are located inside the installation cassette. This means that there are no liquid-carrying pipe or hose lines outside the installation cassette. Another advantage is the small footprint of the lift, both the size of the mounting cassette, as well as the visible parts concerning.
  • Another advantage is that the compressed air compressor present in each motor vehicle workshop is better utilized as a supply unit of the compressed air and no further drive unit is required.
  • Another advantage is the ease of installation. The assembly personnel do not require any electrical knowledge and no electrical specialist is required for electrical commissioning.

Landscapes

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

Claims (12)

  1. Pont élévateur pour véhicules automobiles
    - avec deux tubes cylindriques (3) se déplaçant de manière synchronisée dans une direction verticale (17),
    - avec une unité de levage (18) entraînable par voie hydraulique pour chaque tube cylindrique (3),
    - avec une traverse mécanique (5) pour les deux unités de levage (18), afin d'assurer le synchronisme des deux tubes cylindriques (3) et leur blocage en rotation autour de leur propre axe longitudinal,
    - avec un blocage mécanique de descente (10,16) empêchant une descente accidentelle en cas de chute de pression,
    caractérisé en ce que chaque unité de levage (18) est dotée d'un piston plongeur (4) creux, vertical et à point d'appui inférieur, à l'intérieur duquel sont contenus de l'air comprimé (26) et un fluide hydraulique (27), la cavité intérieure du piston plongeur (4) étant réalisée comme réservoir sous pression et à l'extrémité inférieure duquel est fixé un tube coudé (6) qui s'étend intérieurement jusqu'à la partie supérieure (22) du piston plongeur (4).
  2. Pont élévateur selon la revendication 1,
    caractérisé en ce que les cavités des deux pistons plongeurs (4) stockent le fluide hydraulique nécessaire à la sortie des tubes cylindriques.
  3. Pont élévateur selon la revendication 1,
    caractérisé en ce qu'à l'extrémité inférieure des pistons plongeurs (24), les deux pistons plongeurs (4) présentent chacun une ouverture (6a) pour l'air comprimé (26) et une ouverture (7a) pour le fluide hydraulique (27), lesdites ouvertures présentant chacune une possibilité de raccordement (7) (8) pour une conduite ou un tuyau.
  4. Pont élévateur selon la revendication 1,
    caractérisé en ce que le fluide hydraulique (27) est de préférence de l'eau ou un liquide aqueux, ou encore un autre liquide organique tel que de l'alcool.
  5. Pont élévateur selon la revendication 1,
    caractérisé en ce que des raccords de conduite ou de tuyau (11, 12) sont présents entre les ouvertures (7a) des pistons plongeurs (4) et les ouvertures (8a) des tubes cylindriques (3), entre lesquels est disposée au moins une vanne hydraulique (9).
  6. Pont élévateur selon la revendication 1,
    caractérisé en ce que le fluide hydraulique (27) circule entre les cavités des pistons plongeurs (4) et les cavités des tubes cylindriques (3).
  7. Pont élévateur selon la revendication 1,
    caractérisé en ce que l'air comprimé (26) s'écoule par le tube coudé (6).
  8. Pont élévateur selon la revendication 1,
    caractérisé en ce que lors de la descente, l'air sortant par le conduit (14) et par l'amortisseur de bruit (29) est reconduit dans le caisson encastrable (1).
  9. Pont élévateur selon la revendication 1,
    caractérisé en ce que l'air d'échappement sous pression est au moins partiellement conduit vers un accumulateur de pression pneumatique ou mis à la disposition du générateur de pression en tant qu'air d'admission sous pression.
  10. Pont élévateur selon la revendication 1,
    caractérisé en ce qu'un récipient est mis en place à l'extrémité du conduit (14) et en aval de l'amortisseur de bruit (29) pour recueillir de petites quantités du fluide hydraulique.
  11. Ponts élévateurs selon la revendication 1,
    caractérisé en ce que la surface du fluide hydraulique (27.1) dans les pistons plongeurs (4) en état rétracté atteint le bord supérieur de l'ouverture (6a) du tube coudé (6).
  12. Pont élévateur selon la revendication 1,
    caractérisé en ce que l'accumulateur de pression pneumatique au moins partiellement rempli restitue au moins une partie de son air comprimé précontraint lors du processus de levage suivant.
EP04789995A 2003-10-22 2004-10-15 Pont elevateur a deux verins hydrauliques Not-in-force EP1680603B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10349065A DE10349065B3 (de) 2003-10-22 2003-10-22 Hydraulische 2-Stempel-Hebebühne
PCT/DE2004/002293 WO2005040617A1 (fr) 2003-10-22 2004-10-15 Pont elevateur a deux verins hydrauliques

Publications (2)

Publication Number Publication Date
EP1680603A1 EP1680603A1 (fr) 2006-07-19
EP1680603B1 true EP1680603B1 (fr) 2011-10-05

Family

ID=34484898

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04789995A Not-in-force EP1680603B1 (fr) 2003-10-22 2004-10-15 Pont elevateur a deux verins hydrauliques

Country Status (5)

Country Link
US (1) US7530300B2 (fr)
EP (1) EP1680603B1 (fr)
AT (1) ATE527452T1 (fr)
DE (2) DE10349065B3 (fr)
WO (1) WO2005040617A1 (fr)

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DE102005027146B4 (de) * 2005-06-11 2009-09-17 Hyco Pacoma Gmbh Liftzylindereinheit für eine Hebebühne
FR2917079A1 (fr) * 2007-06-05 2008-12-12 Renault Sas Banc d'essais dynamique de vehicule automobile,comportant un pont elevateur
DE102007029017B4 (de) * 2007-06-23 2009-12-17 Herrmann Ag Vorrichtung zum Heben von Objekten, insbesondere für Fahrzeuge
CN104895745A (zh) * 2009-05-22 2015-09-09 通用压缩股份有限公司 压缩机和/或膨胀机装置
US8454321B2 (en) 2009-05-22 2013-06-04 General Compression, Inc. Methods and devices for optimizing heat transfer within a compression and/or expansion device
DE102009052977B4 (de) * 2009-11-12 2011-07-21 Roland Hörnstein GmbH & Co. KG, 72285 Hydraulische Fahrzeughebebühnenanlage
AU2010336383B2 (en) 2009-12-24 2015-05-28 General Compression Inc. Methods and devices for optimizing heat transfer within a compression and/or expansion device
CN103477092A (zh) 2010-12-07 2013-12-25 通用压缩股份有限公司 带有滚动活塞密封件的压缩机和/或膨胀机装置
WO2012096938A2 (fr) 2011-01-10 2012-07-19 General Compression, Inc. Dispositif de compresseur et/ou d'expansion
US8572959B2 (en) 2011-01-13 2013-11-05 General Compression, Inc. Systems, methods and devices for the management of heat removal within a compression and/or expansion device or system
AU2012205442B2 (en) 2011-01-14 2015-07-16 General Compression, Inc. Compressed gas storage and recovery system and method of operation systems
DE102011016926A1 (de) * 2011-04-13 2012-10-18 Hans Balzer Verfahren zur Herstellung einer im Boden versenkt angeordneten Hebeeinrichtung, und Verwendung einer solchen
US8387375B2 (en) 2011-11-11 2013-03-05 General Compression, Inc. Systems and methods for optimizing thermal efficiency of a compressed air energy storage system
US8522538B2 (en) 2011-11-11 2013-09-03 General Compression, Inc. Systems and methods for compressing and/or expanding a gas utilizing a bi-directional piston and hydraulic actuator
IT201700056306A1 (it) * 2017-05-24 2018-11-24 O Me R Spa Ponte sollevatore
CN109882464B (zh) * 2019-03-08 2023-10-27 天津大学 液压容错机构

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Also Published As

Publication number Publication date
EP1680603A1 (fr) 2006-07-19
DE10349065B3 (de) 2005-05-25
DE112004002593D2 (de) 2006-09-14
US20060289239A1 (en) 2006-12-28
ATE527452T1 (de) 2011-10-15
WO2005040617A1 (fr) 2005-05-06
US7530300B2 (en) 2009-05-12

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