EP1199277A1 - Lifting platform for a vehicle - Google Patents

Lifting platform for a vehicle Download PDF

Info

Publication number
EP1199277A1
EP1199277A1 EP01122102A EP01122102A EP1199277A1 EP 1199277 A1 EP1199277 A1 EP 1199277A1 EP 01122102 A EP01122102 A EP 01122102A EP 01122102 A EP01122102 A EP 01122102A EP 1199277 A1 EP1199277 A1 EP 1199277A1
Authority
EP
European Patent Office
Prior art keywords
lifting
pump
piston
pistons
actuating
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Withdrawn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
EP01122102A
Other languages
German (de)
French (fr)
Inventor
Tebaldo Granata
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.)
Snap On Equipment GmbH
Original Assignee
Snap On Deutschland Holding GmbH
Snap On Equipment GmbH
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 Snap On Deutschland Holding GmbH, Snap On Equipment GmbH filed Critical Snap On Deutschland Holding GmbH
Publication of EP1199277A1 publication Critical patent/EP1199277A1/en
Withdrawn legal-status Critical Current

Links

Images

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
    • B66F7/065—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
    • B66F7/06—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
    • B66F7/10—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

Definitions

  • the invention relates to a lifting platform according to the preamble of claim 1.
  • Such a lifting platform is known from WO95 / 11190.
  • the known lifting platform has two lifting surfaces for lifting one Vehicle, especially motor vehicle, each of which an associated hydraulic lifting device is lifted from a lifting cylinder and a lifting piston.
  • To control a synchronous movement of the two lifting surfaces is a relatively complex control system with control valves intended.
  • the object of the invention is a lift of the beginning to create the type mentioned, with which with reduced effort a synchronous movement of the two lifting surfaces is achieved becomes.
  • two actuating pistons of a pump device provided, of which a respective actuating piston is assigned to a lifting piston of the lifting device.
  • the transmission of motion between the actuating piston and the reciprocating piston takes place via a movement transmission medium, especially a hydraulic fluid that is incompressible and in a closed cycle between the two respective pistons, d. H. between an actuating piston and a reciprocating piston is located.
  • the two actuating pistons are rigid with each other connected.
  • the pump device can have two pump cylinders in which the actuating piston can be acted upon by a pressure medium are.
  • the print medium can be from a motor-powered Pump will be delivered.
  • the invention avoids that a non-uniform movement of the lifting surfaces takes place. This is guaranteed by the rigid connection the two actuating pistons of the pump device, which together with the reciprocating pistons the limits of the closed assigned circuits for the movement transmission medium, especially form the hydraulic fluid.
  • the rigid connection creates a synchronous movement the actuating piston has reached. The synchronous movement these two pistons are on the compressible motion transmission medium transferred to the two reciprocating pistons. In this way, the synchronous lifting movement of the two is achieved Lifting surfaces, in upward and downward direction.
  • FIG. 1 In the figure is a lifting system, in particular Electro-hydraulic lifting system shown, which two Has lifting surfaces 1 and 2.
  • the two lifting surfaces 1 and 2 are via an associated mechanical motion transmission device 16, 17 connected to a reciprocating piston 5, 6.
  • Each reciprocating piston 5, 6 is in a reciprocating cylinder 3, 4 arranged movably in the axial direction.
  • the respective piston 5 or 6 and the associated lifting cylinder 3 or 4 form together with the respective mechanical motion transmission device 16 and 17 a lifting device, the is assigned to the respective lifting area 1 and 2.
  • the respective mechanical motion transmission device 16, 17, is preferably designed as scissors. However, it is also possible, the piston movement directly on a lifting ram to transfer the lifting surfaces 1 and 2.
  • each actuating piston 7 and 8 is in a separate one Pump cylinders 12 and 13 movably guided in the axial direction.
  • a closed circuit 10 or 11 is an incompressible movement transmission medium, especially a hydraulic fluid. With this movement transmission medium, too Spaces in the respective lifting cylinder 3 or 4 below the lifting piston 5 or 6 and the cylinder rooms above the two Actuating piston 7 or 8 filled.
  • the circuit 10 acts it is a cylinder chamber 18 below the reciprocating piston 5 and a cylinder chamber 20 above the actuating piston 7.
  • the circuit 11 is the cylinder space 19 below the reciprocating piston 6 and the cylinder chamber 21 above the actuating piston 8.
  • the two actuating pistons 7, 8 are powered by a pressure medium, which is supplied by a pump 14.
  • the pump 14 is to the pressure chambers 25 and 26 of the Pump cylinders 12 and 13 connected.
  • the pressure chamber 25 is located itself below the actuating piston 7 in the pump cylinder 12 and the pressure chamber 26 is below that Actuating piston 8 in the pump cylinder 13.
  • the pump 14 is driven by a pump motor 15.
  • the lifting system shown is due to a simple structure insensitive to interference. It will be a fine-tuned one synchronous lifting movement of the two lifting surfaces 1 and 2 reached. The effort for the maintenance of the lifting system is small due to its simple structure. This will also achieved safe operation of the lifting system.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Reciprocating Pumps (AREA)

Abstract

The lifting platform has at least two lifting surfaces (1,2)adjustable in height each by a hydraulic hoist. Each hoist has a lifting piston (5,6) movable inside a cylinder (3,4) by means of a movement-transfer appliance and connected to its lifting surface. Each of the two lifting pistons is operated by an operating piston (7,8) belonging to a pump (9) by means of a movement transmission medium in an enclosed circuit (10,11). The two pistons are rigidly joined so as to move together. The pump has two pump cylinders (12,13) in which a pressurized medium acts upon the pistons

Description

Die Erfindung betrifft eine Hebebühne nach dem Oberbegriff des Patentanspruches 1.The invention relates to a lifting platform according to the preamble of claim 1.

[Stand der Technik][State of the art]

Eine derartige Hebebühne ist aus der WO95/11190 bekannt. Die bekannte Hebebühne besitzt zwei Hubflächen zum Anheben eines Fahrzeugs, insbesondere Kraftfahrzeugs, von denen jede von einer zugeordneten hydraulischen Hubeinrichtung bestehend aus einem Hubzylinder und einem Hubkolben angehoben wird. Zur Steuerung einer synchronen Bewegung der beiden Hubflächen ist ein relativ aufwendiges Steuerungssystem mit Steuerventilen vorgesehen.Such a lifting platform is known from WO95 / 11190. The known lifting platform has two lifting surfaces for lifting one Vehicle, especially motor vehicle, each of which an associated hydraulic lifting device is lifted from a lifting cylinder and a lifting piston. To control a synchronous movement of the two lifting surfaces is a relatively complex control system with control valves intended.

[Aufgabe der Erfindung]OBJECT OF THE INVENTION

Aufgabe der Erfindung ist es, eine Hebebühne der eingangs genannten Art zu schaffen, bei welcher mit verringertem Aufwand eine synchrone Bewegung der beiden Hubflächen erreicht wird.The object of the invention is a lift of the beginning to create the type mentioned, with which with reduced effort a synchronous movement of the two lifting surfaces is achieved becomes.

Die Aufgabe wird durch die kennzeichnenden Merkmale des Patentanspruches 1 gelöst.The object is achieved by the characterizing features of the claim 1 solved.

Bei der Erfindung sind zwei Betätigungskolben einer Pumpeinrichtung vorgesehen, von denen ein jeweiliger Betätigungskolben einem Hubkolben der Hubeinrichtung zugeordnet ist. Die Bewegungsübertragung zwischen dem Betätigungskolben und dem Hubkolben erfolgt über ein Bewegungsübertragungsmedium, insbesondere eine Hydraulikflüssigkeit, die inkompressibel ist und in einem geschlossenen Kreislauf zwischen den beiden jeweiligen Kolben, d. h. zwischen einem Betätigungskolben und einem Hubkolben sich befindet. Für eine gemeinsame Bewegung sind die beiden Betätigungskolben starr miteinander verbunden. In the invention, two actuating pistons of a pump device provided, of which a respective actuating piston is assigned to a lifting piston of the lifting device. The transmission of motion between the actuating piston and the reciprocating piston takes place via a movement transmission medium, especially a hydraulic fluid that is incompressible and in a closed cycle between the two respective pistons, d. H. between an actuating piston and a reciprocating piston is located. For a common movement the two actuating pistons are rigid with each other connected.

Die Pumpeinrichtung kann zwei Pumpzylinder aufweisen, in denen die Betätigungskolben von einem Druckmedium beaufschlagbar sind. Das Druckmedium kann von einer motorbetriebenen Pumpe geliefert werden.The pump device can have two pump cylinders in which the actuating piston can be acted upon by a pressure medium are. The print medium can be from a motor-powered Pump will be delivered.

Durch die Erfindung wird mit einfachen Mitteln, ohne den aufwendigen Einsatz von Steuerventilen, eine synchrone Bewegung der beiden Hubflächen beim Anheben und Absenken erreicht. Insbesondere beim Absenken besteht die Gefahr, dass aufgrund von Positionsfehlern des Fahrzeugs auf den Hubflächen unterschiedliche Belastungen auf diese und die zugeordneten Hubeinrichtungen wirken. Durch die Erfindung wird vermieden, dass eine ungleichförmige Bewegung der Hubflächen stattfindet. Gewährleistet wird dies durch die starre Verbindung der beiden Betätigungskolben der Pumpeinrichtung, welche zusammen mit den Hubkolben die Begrenzungen der geschlossenen zugeordneten Kreisläufe für das Bewegungsübertragungsmedium, insbesondere die Hydraulikflüssigkeit bilden. Durch die starre Verbindung wird eine synchrone Bewegung der Betätigungskolben erreicht. Die synchrone Bewegung dieser beiden Kolben wird über das kompressible Bewegungsübertragungsmedium auf die beiden Hubkolben übertragen. Hierdurch erreicht man die synchrone Hubbewegung der beiden Hubflächen, in Aufwärts- und Abwärtsrichtung.By the invention with simple means, without the elaborate use of control valves, a synchronous movement of the two lifting surfaces reached when lifting and lowering. Especially when lowering, there is a risk that due to vehicle position errors on the lifting surfaces different loads on this and the associated Lifting devices work. The invention avoids that a non-uniform movement of the lifting surfaces takes place. This is guaranteed by the rigid connection the two actuating pistons of the pump device, which together with the reciprocating pistons the limits of the closed assigned circuits for the movement transmission medium, especially form the hydraulic fluid. The rigid connection creates a synchronous movement the actuating piston has reached. The synchronous movement these two pistons are on the compressible motion transmission medium transferred to the two reciprocating pistons. In this way, the synchronous lifting movement of the two is achieved Lifting surfaces, in upward and downward direction.

[Beispiele][Examples]

Anhand der Figur wird an einem Ausführungsbeispiel die Erfindung noch näher erläutert.Based on the figure, the invention is an exemplary embodiment explained in more detail.

In der Figur ist schematisch ein Hubsystem, insbesondere elektro-hydraulisches Hubsystem dargestellt, welches zwei Hubflächen 1 und 2 aufweist. Die beiden Hubflächen 1 und 2 sind über eine jeweils zugeordnete mechanische Bewegungsübertragungseinrichtung 16, 17 mit einem Hubkolben 5, 6 verbunden. Jeder Hubkolben 5, 6 ist in einem Hubzylinder 3, 4 in axialer Richtung beweglich angeordnet. Der jeweilige Hubkolben 5 bzw. 6 und der zugeordnete Hubzylinder 3 bzw. 4 bilden zusammen mit der jeweiligen mechanischen Bewegungsübertragungseinrichtung 16 bzw. 17 eine Hubeinrichtung, die der jeweiligen Hubfläche 1 und 2 zugeordnet ist. Die jeweilige mechanische Bewegungsübertragungseinrichtung 16, 17, ist vorzugsweise als Schere ausgebildet. Es ist jedoch auch möglich, die Kolbenbewegung direkt über einen Hubstempel auf die Hubflächen 1 und 2 zu übertragen. Zur Steuerung der synchronen Bewegung der beiden Hubkolben 5 und 6 sind in einer Pumpeinrichtung 9, zwei Betätigungskolben 7 und 8 vorgesehen. Jeder Betätigungskolben 7 und 8 ist in einem separaten Pumpenzylinder 12 und 13 in axialer Richtung beweglich geführt. Zwischen einem jeweiligen Betätigungskolben 7 bzw. 8 und einem zugeordneten jeweiligen Hubkolben 5 bzw. 6 befindet sich ein geschlossener Kreislauf 10 bzw. 11. In jedem Kreislauf 10 bzw. 11 befindet sich ein inkompressibles Bewegungsübertragungsmedium, insbesondere eine Hydraulikflüssigkeit. Mit diesem Bewegungsübertragungsmedium sind auch die Räume im jeweiligen Hubzylinder 3 bzw. 4 unterhalb der Hubkolben 5 bzw. 6 sowie die Zylinderräume oberhalb der beiden Betätigungskolben 7 bzw. 8 angefüllt. Im Kreislauf 10 handelt es sich um einen Zylinderraum 18 unterhalb dem Hubkolben 5 und einen Zylinderraum 20 oberhalb dem Betätigungskolben 7. Im Kreislauf 11 handelt es sich um den Zylinderraum 19 unterhalb dem Hubkolben 6 und dem Zylinderraum 21 oberhalb dem Betätigungskolben 8.In the figure is a lifting system, in particular Electro-hydraulic lifting system shown, which two Has lifting surfaces 1 and 2. The two lifting surfaces 1 and 2 are via an associated mechanical motion transmission device 16, 17 connected to a reciprocating piston 5, 6. Each reciprocating piston 5, 6 is in a reciprocating cylinder 3, 4 arranged movably in the axial direction. The respective piston 5 or 6 and the associated lifting cylinder 3 or 4 form together with the respective mechanical motion transmission device 16 and 17 a lifting device, the is assigned to the respective lifting area 1 and 2. The respective mechanical motion transmission device 16, 17, is preferably designed as scissors. However, it is also possible, the piston movement directly on a lifting ram to transfer the lifting surfaces 1 and 2. To control the synchronous Movement of the two pistons 5 and 6 are in one Pump device 9, two actuating pistons 7 and 8 are provided. Each actuating piston 7 and 8 is in a separate one Pump cylinders 12 and 13 movably guided in the axial direction. Between a respective actuating piston 7 and 8 and an associated respective piston 5 and 6 is located a closed circuit 10 or 11. In each Circuit 10 or 11 is an incompressible movement transmission medium, especially a hydraulic fluid. With this movement transmission medium, too Spaces in the respective lifting cylinder 3 or 4 below the lifting piston 5 or 6 and the cylinder rooms above the two Actuating piston 7 or 8 filled. In the circuit 10 acts it is a cylinder chamber 18 below the reciprocating piston 5 and a cylinder chamber 20 above the actuating piston 7. The circuit 11 is the cylinder space 19 below the reciprocating piston 6 and the cylinder chamber 21 above the actuating piston 8.

Auf diese Weise wird in jedem Kreislauf 10, 11 eine starre Verbindung zwischen den Betätigungskolben 7, 8 und den Hubkolben 5, 6 hergestellt. Die beiden Betätigungskolben 7, 8 sind starr miteinander verbunden. Diese starre Verbindung kann mittels einer Verbindungsstange 22 erfolgen, die starr mit Kolbenstangen 23 und 24 verbunden ist. Die Kolbenstangen 23 und 24 sind ebenfalls starr mit den Betätigungskolben 7, 8 verbunden.In this way, a rigid is in each circuit 10, 11 Connection between the actuating pistons 7, 8 and the reciprocating pistons 5, 6 produced. The two actuating pistons 7, 8 are rigidly connected. This rigid connection can be done by means of a connecting rod 22 which is rigid is connected to piston rods 23 and 24. The piston rods 23 and 24 are also rigid with the actuating pistons 7, 8 connected.

Die beiden Betätigungskolben 7, 8 werden von einem Druckmedium, welches von einer Pumpe 14 geliefert wird, beaufschlagt. Die Pumpe 14 ist hierzu an Druckräume 25 und 26 der Pumpenzylinder 12 und 13 angeschlossen. Der Druckraum 25 befindet sich unterhalb dem Betätigungskolben 7 im Pumpenzylinder 12 und der Druckraum 26 befindet sich unterhalb dem Betätigungskolben 8 im Pumpenzylinder 13. Als Druckmedium kann eine Hydraulikflüssigkeit verwendet werden. Die Pumpe 14 wird von einem Pumpenmotor 15 angetrieben.The two actuating pistons 7, 8 are powered by a pressure medium, which is supplied by a pump 14. The pump 14 is to the pressure chambers 25 and 26 of the Pump cylinders 12 and 13 connected. The pressure chamber 25 is located itself below the actuating piston 7 in the pump cylinder 12 and the pressure chamber 26 is below that Actuating piston 8 in the pump cylinder 13. As a pressure medium hydraulic fluid can be used. The pump 14 is driven by a pump motor 15.

Beim Anheben der Hubflächen 1 und 2 wird von der Pumpe 14 Druckmedium in die Druckräume 25, 26 gefördert. Hierdurch werden die beiden starr miteinander verbundenen Betätigungskolben 7, 8 synchron angehoben. Diese synchrone Bewegung der beiden Betätigungskolben 7 und 8 wird über ein inkompressibles Bewegungsübertragungsmedium in den beiden Kreisläufen 10 und 11 auf die Hubkolben 5 und 6 übertragen. Über die mechanischen Bewegungsübertragungsmittel 16 und 17 erfolgt dann die synchrone Anhebung der beiden Hubflächen 1 und 2.When lifting the lifting surfaces 1 and 2, the pump 14 Pressure medium conveyed into the pressure chambers 25, 26. hereby the two rigidly connected actuating pistons 7, 8 raised synchronously. This synchronous movement of the two actuating pistons 7 and 8 is via an incompressible Movement transmission medium in the two circuits 10 and 11 transferred to the reciprocating piston 5 and 6. About the mechanical Movement transmission means 16 and 17 takes place then the synchronous lifting of the two lifting surfaces 1 and 2.

Beim Absenken der Hubflächen 1 und 2 wird aufgrund der starren Verbindung der beiden Betätigungskolben 7 und 8 in den beiden Kreisläufen 10 und 11 jeweils die gleiche Menge an Bewegungsübertragungsmedium aus den Zylinderräumen 18, 19 in die Zylinderräume 20, 21 verdrängt. Hieraus resultiert eine synchrone Absenkbewegung der beiden Hubflächen 1 und 2.When lowering the lifting surfaces 1 and 2, due to the rigid Connection of the two actuating pistons 7 and 8 in the both circuits 10 and 11 each have the same amount Motion transmission medium from the cylinder rooms 18, 19 in the cylinder spaces 20, 21 displaced. This results in a synchronous lowering movement of the two lifting surfaces 1 and 2.

Das dargestellt Hubsystem ist aufgrund eines einfachen Aufbaus gegen Störungen unanfällig. Es wird eine fein abgestimmte synchrone Hubbewegung der beiden Hubflächen 1 und 2 erreicht. Der Aufwand für die Instandhaltung des Hubsystems ist aufgrund seines einfachen Aufbaus gering. Hierdurch wird ferner ein sicherer Betrieb des Hubsystems erreicht. The lifting system shown is due to a simple structure insensitive to interference. It will be a fine-tuned one synchronous lifting movement of the two lifting surfaces 1 and 2 reached. The effort for the maintenance of the lifting system is small due to its simple structure. This will also achieved safe operation of the lifting system.

[Bezugszeichenliste][REFERENCE LIST]

11
Hubflächelifting surface
22
Hubflächelifting surface
33
Hubzylinderlifting cylinder
44
Hubzylinderlifting cylinder
55
Hubkolbenreciprocating
66
Hubkolbenreciprocating
77
Betätigungskolbenactuating piston
88th
Betätigungskolbenactuating piston
99
Pumpeinrichtungpumping device
1010
Kreislaufcirculation
1111
Kreislaufcirculation
1212
Pumpenzylinderpump cylinder
1313
Pumpenzylinderpump cylinder
1414
Pumpepump
1515
Pumpenmotorpump motor
1616
mechanische Bewegungsübertragungseinrichtungmechanical motion transmission device
1717
mechanische Bewegungsübertragungseinrichtungmechanical motion transmission device
1818
Zylinderraumcylinder space
1919
Zylinderraumcylinder space
2020
Zylinderraumcylinder space
2121
Zylinderraumcylinder space
2222
Verbindungsstangeconnecting rod
2323
Kolbenstangepiston rod
2424
Kolbenstangepiston rod
2525
Druckraumpressure chamber
2626
Druckraumpressure chamber

Claims (4)

Hebebühne für ein Fahrzeug, insbesondere Kraftfahrzeug mit wenigstens zwei Hubflächen (1, 2), welche von einer jeweils zugeordneten hydraulischen Hubeinrichtung in der Höhe verstellbar sind, wobei jede Hubeinrichtung einen in einem Hubzylinder (3, 4) durch ein Bewegungsübertragungsmedium verstellbaren Hubkolben (5, 6), der über eine mechanische Bewegungsübertragungseinrichtung mit der zugeordneten Hubfläche (1, 2) verbunden ist, aufweist, dadurch gekennzeichnet, dass jeder der beiden Hubkolben (5, 6) von einem jeweils zugeordneten Betätigungskolben (7, 8) einer Pumpeinrichtung (9) über das in einem jeweiligen geschlossenen Kreislauf (10, 11) befindliche Bewegungsübertragungsmedium betätigbar ist und dass die beiden Betätigungskolben (7, 8) für eine gemeinsame Bewegung starr miteinander verbunden sind.Lifting platform for a vehicle, in particular a motor vehicle, with at least two lifting surfaces (1, 2), the height of which can be adjusted by an associated hydraulic lifting device, each lifting device having a lifting piston (5, 6), which is connected to the associated lifting surface (1, 2) via a mechanical movement transmission device, characterized in that each of the two lifting pistons (5, 6) is associated with a respectively assigned actuating piston (7, 8) of a pump device (9) Can be actuated via the movement transmission medium located in a respective closed circuit (10, 11) and that the two actuating pistons (7, 8) are rigidly connected to one another for a common movement. Hebebühne nach Anspruch 1, dadurch gekennzeichnet, dass die Pumpeinrichtung (9) zwei Pumpzylinder (12, 13) aufweist, in denen die Betätigungskolben (7, 8) von einem Druckmedium beaufschlagbar sind.Lifting platform according to claim 1, characterized in that the pump device (9) has two pump cylinders (12, 13) in which the actuating piston (7, 8) can be acted upon by a pressure medium. Hebebühne nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Bewegungsübertragungsmedium im jeweils geschlossenen Kreislauf (10, 11) eine Hydraulikflüssigkeit ist.Lifting platform according to claim 1 or 2, characterized in that the movement transmission medium in each closed circuit (10, 11) is a hydraulic fluid. Hebebühne nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die beiden Betätigungskolben (7, 8) von einer gemeinsamen Pumpe (14) mit dem Druckmedium beaufschlagbar sind.Lifting platform according to one of claims 1 to 3, characterized in that the two actuating pistons (7, 8) can be acted upon by the pressure medium from a common pump (14).
EP01122102A 2000-10-20 2001-09-14 Lifting platform for a vehicle Withdrawn EP1199277A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10052185 2000-10-20
DE10052185A DE10052185A1 (en) 2000-10-20 2000-10-20 Lifting platform for a vehicle, in particular a motor vehicle

Publications (1)

Publication Number Publication Date
EP1199277A1 true EP1199277A1 (en) 2002-04-24

Family

ID=7660533

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01122102A Withdrawn EP1199277A1 (en) 2000-10-20 2001-09-14 Lifting platform for a vehicle

Country Status (2)

Country Link
EP (1) EP1199277A1 (en)
DE (1) DE10052185A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2824061A1 (en) * 2013-07-10 2015-01-14 Herrmann AG Lifting device and raising platform with such a lifting device
CN104907447A (en) * 2015-04-30 2015-09-16 天津市金万方钢结构有限公司 Lifting type C-shaped steel support plate assembly

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH521285A (en) * 1970-03-24 1972-04-15 Kraft Paul Hydraulic actuation device for a lifting device
US4706458A (en) * 1985-06-24 1987-11-17 Corghi Elettromeccanica S.P.A. Hydraulic system for controlling motor vehicle lifts in general
DE29702334U1 (en) * 1997-02-11 1997-03-27 Hydraulik Techniek, Emmen Lifting device, in particular scissor lift table
JPH09263392A (en) * 1996-03-28 1997-10-07 Banzai:Kk Tuning device for vehicle maintenance lift
EP0985830A1 (en) * 1998-09-07 2000-03-15 Francesco Fiorese Hydraulic circuit for actuating lifting platforms for vehicles
DE29922327U1 (en) * 1999-12-20 2000-03-30 IME Autolift GmbH, 83395 Freilassing Lift

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH521285A (en) * 1970-03-24 1972-04-15 Kraft Paul Hydraulic actuation device for a lifting device
US4706458A (en) * 1985-06-24 1987-11-17 Corghi Elettromeccanica S.P.A. Hydraulic system for controlling motor vehicle lifts in general
JPH09263392A (en) * 1996-03-28 1997-10-07 Banzai:Kk Tuning device for vehicle maintenance lift
DE29702334U1 (en) * 1997-02-11 1997-03-27 Hydraulik Techniek, Emmen Lifting device, in particular scissor lift table
EP0985830A1 (en) * 1998-09-07 2000-03-15 Francesco Fiorese Hydraulic circuit for actuating lifting platforms for vehicles
DE29922327U1 (en) * 1999-12-20 2000-03-30 IME Autolift GmbH, 83395 Freilassing Lift

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 02 30 January 1998 (1998-01-30) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2824061A1 (en) * 2013-07-10 2015-01-14 Herrmann AG Lifting device and raising platform with such a lifting device
CN104907447A (en) * 2015-04-30 2015-09-16 天津市金万方钢结构有限公司 Lifting type C-shaped steel support plate assembly

Also Published As

Publication number Publication date
DE10052185A1 (en) 2002-05-02

Similar Documents

Publication Publication Date Title
EP2480405B1 (en) Prestressed hydraulic drive with variable-speed pump
DE102011000473A1 (en) Pressing machine and method for pressing workpieces
DE2257175A1 (en) FORKLIFT
EP0972631B1 (en) Hydraulic drive for a press
DE2503458A1 (en) TOGGLE PRESS
EP3880975B1 (en) Electro-hydrostatic actuator system
DE2830779C2 (en) Hydraulic double pressure press
EP1106275A2 (en) Apparatus for high pressure forming of a tubular member or blank
EP0979357B1 (en) Hydrostatic displacement drive for lifting and lowering and holding loads, in particular for lifts
DE3030050A1 (en) LOAD BALANCING DEVICE FOR PRESS TOOLS
DE19822436A1 (en) Operating hydraulic press the force drop during changeover from the fast motion to the forming motion is reduced
EP1199277A1 (en) Lifting platform for a vehicle
EP2114587B1 (en) Forming press with a drawing cushion function integrated into the sliding table
DE20112716U1 (en) Manually operated no-load high-speed hoist
WO1999054123A1 (en) Method for operating a hydraulic press
EP0635320B1 (en) Pressure pad for single-acting presses in particular for mechanical and transfer presses
DE3702069A1 (en) DRAWER IN A PRESS
AT404440B (en) METHOD FOR CONTROLLING THE STROKE FREQUENCY OF A FORGING MACHINE AND FORGING MACHINE FOR CARRYING OUT THE METHOD
DE1199482B (en) Use of a press for manufacturing body parts from sheet metal for pressing glass fiber reinforced synthetic resin parts
DE638238C (en) Changeover switch for a lifting device operated with the aid of a flowing means with control members arranged in pairs
DE2607354A1 (en) HYDRAULIC LIFTING DEVICE WITH A PISTON PUMP
DE951849C (en) Forging press with driving device, pump and discharge device
DE19541721A1 (en) Hydraulic drawing unit in press
DE4106639A1 (en) HYDRAULIC PRESS FOR POWDERED MASSES
AT271142B (en) Impact processing machine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SNAP-ON EQUIPMENT GMBH

AKX Designation fees paid
REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20021025