EP0461341B1 - Lifting-platform for motor vehicles - Google Patents
Lifting-platform for motor vehicles Download PDFInfo
- Publication number
- EP0461341B1 EP0461341B1 EP91102414A EP91102414A EP0461341B1 EP 0461341 B1 EP0461341 B1 EP 0461341B1 EP 91102414 A EP91102414 A EP 91102414A EP 91102414 A EP91102414 A EP 91102414A EP 0461341 B1 EP0461341 B1 EP 0461341B1
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- European Patent Office
- Prior art keywords
- lifting
- platform according
- lifting platform
- support pipe
- sleeve
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- 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.)
- Expired - Lifetime
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- 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 for motor vehicles, in particular passenger cars, with at least two vertically movable columns which have a support surface for receiving the vehicle at the top, the columns being arranged underground in a pit in the retracted state and the support surface being approximately at the level of the workshop floor .
- a lifting platform with the features of the preamble of claim 1 is known from DE-A 38 36 903.
- the sleeve is arranged on a disk piston acting on both sides and contains in its interior a second piston which can be moved relative to it and which functions as a support tube, forming an annular gap.
- the annular gap between the sleeve and the support tube is filled with a hydraulic medium and is connected to an annular space on the outside of the sleeve via a sleeve bore.
- the disc piston When the sleeve is raised, the disc piston displaces the hydraulic oil located in the outer annular gap and presses it via the sleeve bore into the space inside the sleeve, so that the support tube carries out an additional lifting movement relative to the sleeve.
- US-A-4 892 028 discloses an above-ground lifting platform in which the support tube is connected to one end of a rope which runs over a deflection roller arranged above and is fixed in place at the other end.
- the deflection roller sits on the piston rod of a hydraulic unit and can thus be moved upwards, whereby the support tube is carried along by the rope mentioned at twice the lifting speed.
- the present invention has for its object to improve a built-in lift in the workshop floor of the type described in such a way that it manages with a lower pit depth at the same lifting height.
- the lifting platform according to the invention should be characterized by a robust and inexpensive construction.
- the lifting element By connecting the support tube to the traction means, which in turn runs over a deflecting roller of the lifting element, the lifting element generates a stroke path of the support tube which is twice as large when it is raised. At the same time, the guide of the support tube is continuously shifted upward by the movable sleeve, so that the support tube is stabilized in the transverse direction even in the extended state.
- the invention consists essentially in the combination of the lift reinforcement with the telescopic guide.
- the movable sleeve which acts as a telescopic guide for the support tube, can be arranged inside or outside the same. It expediently surrounds the support tube on the outside thereof and is in turn guided in a guide bush which is embedded in the workshop floor.
- the method of the sleeve can be generated by the support tube, for example in such a way that the support tube comes into contact with the sleeve after reaching half the lift height and takes it along during the rest of the stroke .
- the sleeve is rigidly connected to the lifting element and carries out the lifting movements synchronously with it.
- the lift can have four columns, which are connected in pairs via entry rails for the vehicle. In practice, however, it is sufficient if only two pillars are provided, one on each side of the vehicle. In this case, it is particularly expedient if an anti-rotation device is attached between the support tube and the lifting element.
- the support tube can have a guide plate surrounding the lifting element near its lower end, the central opening of which corresponds to the outer contour of the lifting element.
- the lifting force is introduced into the columns either directly on the lifting elements or via the common transverse yoke.
- the lifting elements can be part of a hydraulically actuated cylinder-piston unit.
- the transverse yoke can be made using lifting spindles or a scissor-type frame.
- the lifting platform is in the lowered state.
- the two support surfaces 1a and 1b which serve to accommodate the vehicle, are located on the same Level as the workshop floor 2.
- Their two pillars which are generally designated 3a and 3b, stand on the foundation 5 of a pit 6.
- a lifting element 7a or 7b in the form of a cylinder-piston unit, the piston rod 8a or 8b of which carries a deflecting roller 9a or 9b at the upper end and moves it hydraulically upwards can be.
- a traction device 10a or 10b in the form of a chain or a rope runs over the deflection roller.
- This traction means is fixed at one end, for example on the foundation or on the cylinder of the lifting element 7a, 7b, while the opposite other end is connected to the lower region of a support tube 11a or 11b.
- the aforementioned support surface 1a or 1b is mounted on this support tube.
- a second traction means with its own deflection roller is arranged in each column at a short distance from each other and this traction means acts on the opposite side of the first traction means.
- the sleeve is directly or indirectly connected to the upward moving part of the lifting element, in this case to the piston 8a or 8b.
- the piston rod 8a or 8b has a downward extension 13a or 13b for this purpose, which is connected to the sleeve 12a or 12b near the lower end of the support tube 11a, in the exemplary embodiment by means of a transverse yoke 14 which the two reciprocating pistons 8a and 8b and the sleeves 11a and 11b connected thereto are synchronized.
- the two sleeves each run in a guide bush 15a or 15b, which is embedded in the workshop floor.
- the length of the sleeves corresponds approximately to the travel of the piston rods 8a and 8b and thus approximately half the stroke of the support tubes 11a and 11b.
- the mode of operation is as follows: If the lifting elements 7a and 7b are pressurized with oil, the piston rods 8a and 8b and, at the same speed, the two sleeves 12a and 12b move upwards. At the same time, but at twice the lifting speed, the support tubes 11a and 11b are raised by the traction means 10a and 10b running over the deflection rollers. Through them at half speed Following sleeves 12a and 12b, the guide for the support tubes is shifted upwards, ie that the support tube is supported by the sleeve at about half the height of the extended stroke length.
- guide rings 16a or 16b are provided between the support tube 11a or 11b and its sleeve 12a or 12b, in the form of two rings arranged at a distance from one another. This prevents a tilting game between the two parts.
- These guide rings can be positioned at the lower end of the support tube or at the upper end of the sleeve.
- Sealing ring pairs 17a and 17b between the sleeve and its guide bushing 15a and 15b serve the same purpose.
- an anti-rotation device in the form of a plate 18a, which forms the lower end of the support tube 11a, to which the traction means 10a is anchored and which has an opening 19a with a square cross-section, matching the contour of the downward extension 13a of the piston rod 8a.
- Figure 3 shows a cross section at the level of the guide rollers. It can be seen here that in each column two juxtaposed deflection rollers 9a and 9a 'are arranged, each of which is assigned a separate traction means 10a or 10a'. These traction means are arranged in opposite directions, so that their ends performing the lifting movement act on approximately opposite regions of the support tube 11a.
- the described invention is characterized by a small installation depth without restriction of the lifting height and by exact guidance of the support tubes in their raised position.
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Types And Forms Of Lifts (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
Description
Die Erfindung betrifft eine Hebebühne für Kraftfahrzeuge, insbesondere Personenwagen, mit mindestens zwei vertikal verfahrbaren Säulen, die oben eine Stützfläche zur Aufnahme des Fahrzeuges aufweisen, wobei die Säulen in eingefahrenem Zustand unterirdisch in einer Grube angeordnet sind und die Stützfläche etwa auf dem Niveau des Werkstattbodens liegt.The invention relates to a lifting platform for motor vehicles, in particular passenger cars, with at least two vertically movable columns which have a support surface for receiving the vehicle at the top, the columns being arranged underground in a pit in the retracted state and the support surface being approximately at the level of the workshop floor .
Derartige Hebebühnen sind in verschiedenen Bauformen bekannt. Ihr Vorteil liegt darin, daß in eingefahrenem Zustand alle Teile der Hebebühne im Werkstattboden verschwinden. Dadurch ist die Bewegungsfreiheit in der Werkstatt wesentlich besser als bei den oberirdischen Hebebühnen, deren Säulen auch dann im Weg stehen, wenn die Bühne nicht benutzt wird.Such lifts are known in various designs. Your advantage is that all parts of the lift disappear into the workshop floor when retracted. This means that the freedom of movement in the workshop is much better than with the above-ground lifting platforms, whose columns are in the way even when the platform is not in use.
Andererseits ist es für die in den Hallenboden eingebauten Hebebühnen notwendig, Gruben auszuheben, die eine Tiefe aufweisen müssen, die etwa der Hubhöhe der Bühne entspricht. Hierfür müssen in der Praxis Gruben mit einer Tiefe von etwa 2 m ausgehoben werden.On the other hand, it is necessary for the lifting platforms built into the hall floor to dig pits that must have a depth that corresponds approximately to the lifting height of the platform. In practice, pits with a depth of about 2 m must be dug for this.
Eine Hebebühne mit den Merkmalen des Oberbegriffes von Patentanspruch 1 ist durch die DE-A 38 36 903 bekannt. Dabei ist die Hülse an einem beidseitig wirkenden Scheibenkolben angeordnet und enthält in ihrem Inneren unter Bildung eines Ringspaltes einen relativ zu ihr verfahrbaren zweiten Kolben, der als Tragrohr fungiert. Der Ringspalt zwischen Hülse und Tragrohr ist mit einem Hydraulikmittel gefüllt und steht über eine Hülsenbohrung mit einem Ringraum an der Außenseite der Hülse in Verbindung. Beim Hochfahren der Hülse verdrängt der Scheibenkolben das im äußeren Ringspalt befindliche Hydrauliköl und drückt es über die genannte Hülsenbohrung in den innerhalb der Hülse befindlichen Raum, so daß das Tragrohr eine zusätzliche Hubbewegung relativ zur Hülse ausführt.A lifting platform with the features of the preamble of claim 1 is known from DE-A 38 36 903. The sleeve is arranged on a disk piston acting on both sides and contains in its interior a second piston which can be moved relative to it and which functions as a support tube, forming an annular gap. The annular gap between the sleeve and the support tube is filled with a hydraulic medium and is connected to an annular space on the outside of the sleeve via a sleeve bore. When the sleeve is raised, the disc piston displaces the hydraulic oil located in the outer annular gap and presses it via the sleeve bore into the space inside the sleeve, so that the support tube carries out an additional lifting movement relative to the sleeve.
Außerdem ist durch die US-A-4 892 028 eine Überflur-Hebebühne bekannt, bei der das Tragrohr mit dem einen Ende eines Seiles verbunden ist, das über eine oberhalb angeordnete Umlenkrolle läuft und am anderen Ende ortsfest fixiert ist. Die Umlenkrolle sitzt an der Kolbenstange eines Hydraulikaggregates und kann dadurch nach oben verfahren werden, wodurch das Tragrohr von dem genannten Seil mit doppelter Hubgeschwindigkeit mitgenommen wird.In addition, US-A-4 892 028 discloses an above-ground lifting platform in which the support tube is connected to one end of a rope which runs over a deflection roller arranged above and is fixed in place at the other end. The deflection roller sits on the piston rod of a hydraulic unit and can thus be moved upwards, whereby the support tube is carried along by the rope mentioned at twice the lifting speed.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine in den Werkstattboden einbaubare Hebebühne der eingangs beschriebenen Art dahingehend zu verbessern, daß sie bei gleicher Hubhöhe mit einer geringeren Grubentiefe auskommt. Außerdem soll sich die erfindungsgemäße Hebebühne durch robusten und kostengünstigen Aufbau auszeichnen.The present invention has for its object to improve a built-in lift in the workshop floor of the type described in such a way that it manages with a lower pit depth at the same lifting height. In addition, the lifting platform according to the invention should be characterized by a robust and inexpensive construction.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Säulen jeweils folgenden Aufbau aufweisen:
- a) ein inneres vertikal verfahrbares Hubelement, daß am oberen Ende eine Umlenkrolle für ein zumindest teilweise flexibles Zugmittel trägt, dessen eines Ende ortsfest montiert ist,
- b) ein gegenüber dem Hubelement vertikal verfahrbares Tragrohr, daß oben die Stützfläche trägt und unten mit dem anderen Ende des Zugmittels verbunden ist und
- c) eine relativ zum Tragrohr verfahrbare Hülse, die beim Ausfahren der Säule als Teleskopführung für das Tragrohr fungiert.
- a) an inner vertically movable lifting element that carries a deflection roller for an at least partially flexible traction means at the upper end, one end of which is fixed in place,
- b) a vertically movable support tube relative to the lifting element, which carries the support surface at the top and is connected at the bottom to the other end of the traction means, and
- c) a sleeve which can be moved relative to the support tube and which functions as a telescopic guide for the support tube when the column is extended.
Durch die Verbindung des Tragrohres mit dem Zugmittel, das seinerseits über eine Umlenkrolle des Hubelementes läuft, erzeugt das Hubelement beim Hochfahren in an sich bekannter Weise einen doppelt so großen Hubweg des Tragrohres. Zugleich wird durch die verfahrbare Hülse die Führung des Tragrohres laufend nach oben verlagert, so daß das Tragrohr auch in ausgefahrenem Zustand in Querrichtung stabilisiert ist. Die Erfindung besteht also im wesentlichen in der Kombination der Hubverstärkung mit der Teleskopführung.By connecting the support tube to the traction means, which in turn runs over a deflecting roller of the lifting element, the lifting element generates a stroke path of the support tube which is twice as large when it is raised. At the same time, the guide of the support tube is continuously shifted upward by the movable sleeve, so that the support tube is stabilized in the transverse direction even in the extended state. The invention consists essentially in the combination of the lift reinforcement with the telescopic guide.
Die verfahrbare Hülse, die als Teleskopführung für das Tragrohr fungiert, kann innerhalb oder außerhalb desselben angeordnet sein. Zweckmäßig umgibt sie das Tragrohr an dessen Außenseite und ist ihrerseits in einer Führungsbuchse, die im Werkstattboden eingelassen ist, geführt.The movable sleeve, which acts as a telescopic guide for the support tube, can be arranged inside or outside the same. It expediently surrounds the support tube on the outside thereof and is in turn guided in a guide bush which is embedded in the workshop floor.
Das Verfahren der Hülse, deren Hub etwa dem halben Hub des Tragrohres entspricht, kann vom Tragrohr erzeugt werden, etwa in der Weise, daß das Tragrohr nach Erreichen der halben Hubhöhe mit einem Anschlag in Anlage mit der Hülse gelangt und sie während des restlichen Hubweges mitnimmt. Besonders günstig ist es indessen, wenn die Hülse starr mit dem Hubelement verbunden ist und synchron mit ihm die Hubbewegungen durchführt.The method of the sleeve, the stroke of which corresponds to approximately half the stroke of the support tube, can be generated by the support tube, for example in such a way that the support tube comes into contact with the sleeve after reaching half the lift height and takes it along during the rest of the stroke . However, it is particularly favorable if the sleeve is rigidly connected to the lifting element and carries out the lifting movements synchronously with it.
Theoretisch kann die Hebebühne vier Säulen aufweisen, die paarweise über Einfahrschienen für das Fahrzeug verbunden sind. In der Praxis ist es jedoch ausreichend, wenn nur zwei Säulen vorgesehen sind, eine an jeder Fahrzeugseite. In diesem Fall ist es besonders zweckmäßig, wenn zwischen Tragrohr und Hubelement eine Verdrehsicherung angebracht ist. Zu diesem Zweck kann das Tragrohr nahe seinem unteren Ende eine das Hubelement umgebende Führungsplatte aufweisen, deren zentrale Öffnung mit der Außenkontur des Hubelementes korrespondiert.Theoretically, the lift can have four columns, which are connected in pairs via entry rails for the vehicle. In practice, however, it is sufficient if only two pillars are provided, one on each side of the vehicle. In this case, it is particularly expedient if an anti-rotation device is attached between the support tube and the lifting element. For this purpose, the support tube can have a guide plate surrounding the lifting element near its lower end, the central opening of which corresponds to the outer contour of the lifting element.
Damit beide Säulen die Hubbewegung synchron durchführen, empfiehlt es sich, beide Säulen durch ein Querjoch miteinander zu verbinden, das mit seinen Enden an den beiden Hubelementen und/oder den beiden Hülsen festgelegt ist.So that both columns carry out the lifting movement synchronously, it is advisable to connect the two columns to one another by means of a transverse yoke which is fixed at its ends to the two lifting elements and / or the two sleeves.
Die Einleitung der Hubkraft in die Säulen erfolgt entweder direkt an den Hubelementen oder über das gemeinsame Querjoch. Im erstgenannten Fall können die Hubelemente Teil eines hydraulisch betätigbaren Zylinder-Kolben-Aggregates sein. Im zweiten Fall kann das Querjoch etwa durch Hubspindeln oder ein Scheren-Gestell.The lifting force is introduced into the columns either directly on the lifting elements or via the common transverse yoke. In the former case, the lifting elements can be part of a hydraulically actuated cylinder-piston unit. In the second case, the transverse yoke can be made using lifting spindles or a scissor-type frame.
Weitere Merkmale und Vorteile der Erfindung ergeben sich aus nachfolgender Beschreibung eines Ausführungsbeispieles anhand der Zeichnung; dabei zeigt
- Figur 1 eine schematische Prinzipdarstellung der Hebebühne;
- Figur 2 einen vergrößerten Längsschnitt einer Säule und
- Figur 3 einen Querschnitt durch Figur 2.
- Figure 1 is a schematic diagram of the lift;
- Figure 2 is an enlarged longitudinal section of a column and
- FIG. 3 shows a cross section through FIG. 2.
In der Prinzipdarstellung in Figur 1 befindet sich die Hebebühne in heruntergefahrenem Zustand. Dabei befinden sich die beiden Stützflächen 1a und 1b, die zur Aufnahme des Fahrzeuges dienen, auf dem selben Niveau wie der Werkstattboden 2. Ihre beiden Säulen, die allgemein mit 3a und 3b bezeichnet sind, stehen auf dem Fundament 5 einer Grube 6.In the basic illustration in FIG. 1, the lifting platform is in the lowered state. The two
Der Aufbau dieser Säulen ist folgender: In ihrem Zentrum steht ein Hubelement 7a bzw. 7b in Form eines Zylinder-Kolben-Aggregates, dessen Kolbenstange 8a bzw. 8b am oberen Ende jeweils eine Umlenkrolle 9a bzw. 9b trägt und mit dieser hydraulisch nach oben verfahren werden kann.The structure of these columns is as follows: At their center is a
Über die Umlenkrolle läuft jeweils ein Zugmittel 10a bzw. 10b in Form einer Kette oder eines Seiles. Dieses Zugmittel ist mit seinem einen Ende ortsfest, beispielsweise am Fundament oder am Zylinder des Hubelementes 7a, 7b festgelegt, während das gegenüberliegende andere Ende mit dem unteren Bereich eines Tragrohres 11a bzw. 11b verbunden ist. Auf diesem Tragrohr ist die vorerwähnte Stützfläche 1a bzw. 1b montiert.A
Damit das Zugmittel nicht nur einseitig am Tragrohr angreift, ist jeweils in geringem Abstand parallel hierzu ein zweites Zugmittel mit einer eigenen Umlenkrolle in jeder Säule angeordnet und dieses Zugmittel greift an der gegenüberliegenden Seite des ersten Zugmittels an.So that the traction means does not only act on one side on the support tube, a second traction means with its own deflection roller is arranged in each column at a short distance from each other and this traction means acts on the opposite side of the first traction means.
Wesentlich ist nun, daß das Tragrohr 11a bzw. 11b während seiner Hubbewegung von einer ebenfalls verfahrbaren Hülse 12a bzw. 12b in Querrichtung abgestützt wird, so daß diese Hülse als Teleskopführung für das Tragrohr fungiert.It is now essential that the
Die Hülse ist direkt oder indirekt mit dem nach oben fahrenden Teil des Hubelementes, hier also mit dem Kolben 8a bzw. 8b, verbunden. Im Ausführungsbeispiel weist die Kolbenstange 8a bzw. 8b zu diesem Zweck eine nach unten gezogene Verlängerung 13a bzw. 13b auf, die nahe dem unteren Ende des Tragrohres 11a mit der Hülse 12a bzw. 12b in Verbindung steht, im Ausführungsbeispiel mittels eines Querjoches 14, das die beiden Hubkolben 8a bzw. 8b und die damit verbundenen Hülsen 11a bzw. 11b synchronisiert.The sleeve is directly or indirectly connected to the upward moving part of the lifting element, in this case to the
Am oberen Ende laufen die beiden Hülsen jeweils in einer Führungsbuchse 15a bzw. 15b, die im Werkstattboden eingelassen ist. Die Länge der Hülsen entspricht etwa dem Verfahrweg der Kolbenstangen 8a bzw. 8b und somit etwa dem halben Hub der Tragrohre 11a und 11b.At the upper end, the two sleeves each run in a
Die Wirkungsweise ist folgende: Werden die Hubelemente 7a und 7b mit Drucköl beaufschlagt, so fahren die Kolbenstangen 8a und 8b und mit gleicher Geschwindigkeit auch die beiden Hülsen 12a und 12b nach oben. Gleichzeitig, aber mit doppelter Hubgeschwindigkeit werden die Tragrohre 11a und 11b von den dabei über die Umlenkrollen laufenden Zugmitteln 10a und 10b angehoben. Durch die ihnen mit halber Geschwindigkeit folgenden Hülsen 12a und 12b wird die Führung für die Tragrohre nach oben verlagert, d. h., daß das Tragrohr jeweils etwa auf der halben Höhe der ausgefahrenen Hublänge durch die Hülse abgestützt wird.The mode of operation is as follows: If the
Zweckmäßigerweise sind zwischen dem Tragrohr 11a bzw. 11b und seiner Hülse 12a bzw. 12b Führungsringe 16a bzw. 16b vorgesehen, und zwar in Form zweier mit Abstand übereinander angeordneter Ringe. Dadurch wird ein Kippspiel zwischen beiden Teilen ausgeschlossen. Diese Führungsringe können am unteren Ende des Tragrohres oder am oberen Ende der Hülse positioniert sein.Appropriately,
Zum gleichen Zweck dienen Dichtungsringpaare 17a bzw. 17b zwischen der Hülse und ihrer Führungsbuchse 15a bzw. 15b.Sealing ring pairs 17a and 17b between the sleeve and its guide bushing 15a and 15b serve the same purpose.
Weitere Merkmale der Konstruktion ergeben sich aus den nachfolgenden Figuren.Further features of the construction result from the following figures.
Man erkennt insbesondere in Figur 2 eine Verdrehsicherung in Form einer Platte 18a, die den unteren Abschluß des Tragrohres 11a bildet, an der das Zugmittel 10a verankert ist und die innen eine Öffnung 19a mit viereckigem Querschnitt aufweist, passend zu der Kontur der nach unten laufenden Verlängerung 13a der Kolbenstange 8a.One can see in particular in Figure 2 an anti-rotation device in the form of a
Figur 3 zeigt einen Querschnitt in Höhe der Umlenkrollen. Man erkennt hier, daß in jeder Säule zwei nebeneinander angeordnete Umlenkrollen 9a und 9a′ angeordnet sind, denen jeweils ein seperates Zugmittel 10a bzw. 10a′ zugeordnet ist. Diese Zugmittel sind gegenläufig angeordnet, so daß ihre die Hubbewegung durchführenden Enden an etwa gegenüberliegenden Bereichen des Tragrohres 11a angreifen.Figure 3 shows a cross section at the level of the guide rollers. It can be seen here that in each column two
Zusammenfassend zeichnet sich die beschriebene Erfindung durch geringe Einbautiefe ohne Einschränkung der Hubhöhe und durch exakte Führung der Tragrohre in ihrer hochgefahrenen Position aus.In summary, the described invention is characterized by a small installation depth without restriction of the lifting height and by exact guidance of the support tubes in their raised position.
Claims (12)
- A lifting platform for motor vehicles, with at least two vertically displaceable columns (3a, 3b) which at the top have a support surface (1a, 1b) for the reception of a vehicle, wherein in the contracted position the columns are arranged underground in a pit (6) and the support surfaces (1a, 1b) lie approximately at the level of the floor of the workshop, wherein a respective vertically extendible support pipe (11a, 11b) carrying the support surfaces (1a, 1b) at the top encompasses the columns, and a sleeve (12a, 12b) displaceable relative to the support pipe (11a, 11b) which functions on extension of the column as a telescopic guide for the support pipe (11a, 11b),
characterised in that(a) a lifting element (7a. 7b) with a vertically mobile part (8a. 8b) is arranged in the support pipe (11a, 11b);(b) the vertically mobile part (8a, 8b) of the lifting element (7a, 7b) carries at its upper end a guide pulley (9a, 9b) for an at least partially flexible pulling means (10a, 10b) one end of which is fixedly mounted,(c) the support pipe (11a, 11b) is connected below with the other end of the pulling means (10a, 10b), and(d) the displaceable part (8a. 8b) of the lifting element (7a, 7b) is connected with the sleeve (12). - A lifting platform according to claim 1,
characterised in that
the sleeve (12a, 12b) functioning as a telescopic guide surrounds the support pipe (11a, 11b) at its outer side and in its turn the sleeve is guided in a guide bush (15a, 15b) at approximately the height of the floor (2) of the workshop. - A lifting platform according to claim 1 or 2,
characterised in that
the sleeve (12a, 12b) is rigidly connected with the lifting element (8a, 8b). - A lifting platform according to any one of the preceding claims, wherein only one column (3a, 3b) is associated with each side of the vehicle,
characterised in that
a means for preventing rotation (18a) is accommodated between the support pipe (11a, 11b) and the lifting elements (7a, 7b, 8a, 8b). - A lifting platform according to any one of the preceding claims,
characterised in that
two pulling means (10a, 10b) are built into each column (3a, 3b) and engage at approximately oppositely lying positions of the support pipe (11a, 11b). - A lifting platform according to any one of the preceding claims,
characterised in that
near its lower end the support pipe (11a, 11b) has a guide plate (18a) as an anti-rotation locking means which surrounds the lifting element (7a, 7b, 8a, 8b). - A lifting platform according to one of the preceding claims,
characterised in that
the two columns (3a, 3b) are connected together for synchronising their lifting movement. - A lifting platform according to claim 7,
characterised in that
the connection takes place via a transverse yoke (14) which is rigidly connected with the lifting element (7a, 7b). - A lifting platform according to claim 8,
characterised in that
both the two lifting elements (7a, 8a) and the two sleeves (12a, 12b) are located at the transverse yoke (14). - A lifting platform according to claim 8 or 9,
characterised in that
the introduction of lifting power takes place at the transverse yoke (14). - A lifting platform according to any one of claims 1 to 9,
characterised in that
the lifting element (7a, 7b, 8a, 8b) is a hydraulically actuatable piston-and-cylinder unit with an upwardly displaceable piston rod (8a, 8b). - A lifting platform according to any one of claims 1 to 9,
characterised in that
the lifting element (7a, 7b, 8a, 8b) is a hydraulic piston-and-cylinder unit the cylinder of which is upwardly mobile while the piston rod is supported on the bottom of the pit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4018726 | 1990-06-12 | ||
| DE4018726A DE4018726A1 (en) | 1990-06-12 | 1990-06-12 | LIFT FOR MOTOR VEHICLES |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0461341A1 EP0461341A1 (en) | 1991-12-18 |
| EP0461341B1 true EP0461341B1 (en) | 1994-06-01 |
Family
ID=6408225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91102414A Expired - Lifetime EP0461341B1 (en) | 1990-06-12 | 1991-02-20 | Lifting-platform for motor vehicles |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5129483A (en) |
| EP (1) | EP0461341B1 (en) |
| JP (1) | JPH04226298A (en) |
| AT (1) | ATE106359T1 (en) |
| DE (2) | DE4018726A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108128723A (en) * | 2017-12-31 | 2018-06-08 | 江俊华 | Dam lifting device is built in a kind of hydraulic engineering |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5339925A (en) * | 1993-11-23 | 1994-08-23 | Price Raymond D | Hydraulic chain lift |
| DE29715008U1 (en) * | 1997-08-22 | 1997-10-02 | Otto Nussbaum GmbH & Co. KG, 77694 Kehl | Transport and storage facility, in particular for motor vehicles |
| DE102009014719B4 (en) * | 2009-03-27 | 2019-06-13 | Maha Maschinenbau Haldenwang Gmbh & Co. Kg | Post lift for motor vehicles |
| CN105347143B (en) * | 2015-11-27 | 2018-07-03 | 东南电梯股份有限公司 | A kind of no guide rail hydraulic elevating platform and elevating method |
| CN107381343A (en) * | 2017-08-29 | 2017-11-24 | 江汉大学 | A kind of self-travel type gantry lowering or hoisting gear |
| DE202018107407U1 (en) | 2017-12-28 | 2019-03-29 | Klaus Multiparking Gmbh | Device for parking vehicles |
| CN114162746B (en) * | 2021-12-28 | 2023-03-21 | 中国建筑第二工程局有限公司 | Temporary article lifting platform for building construction and construction method thereof |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE145189C (en) * | ||||
| US1886253A (en) * | 1930-02-24 | 1932-11-01 | Standard Lift Company | Multiple plunger lift |
| DE1141428B (en) * | 1958-09-10 | 1962-12-20 | Helmut Rudolph | Hydraulic lifting platform with several telescopic hollow pistons |
| US3536162A (en) * | 1968-01-25 | 1970-10-27 | Autoquip Corp | "u" frame hydraulic vehicle lift |
| US3489248A (en) * | 1968-01-25 | 1970-01-13 | Autoquip Corp | U-frame hydraulic vehicle lift |
| DE2307711A1 (en) * | 1973-02-16 | 1974-08-22 | Emil Drestler | LIFT FOR MOTOR VEHICLES |
| DE2604256A1 (en) * | 1976-02-04 | 1977-08-11 | Walter Vogler | LIFTING DEVICE WITH SAFETY SUPPORT FOR VEHICLES |
| US4134475A (en) * | 1977-06-20 | 1979-01-16 | Dura Corporation | Adjustable pad hydraulic lift |
| US4196887A (en) * | 1977-12-28 | 1980-04-08 | Yasui Sangyo Co., Ltd. | Vehicle support |
| DE3235829A1 (en) * | 1982-09-28 | 1984-03-29 | Kirner Auto-Präzision Robert Fuchs GmbH & Co KG, 6570 Kirn | Lifting platform for vehicles, in particular passenger cars |
| DE3333166A1 (en) * | 1983-09-14 | 1985-03-28 | Walter 7290 Freudenstadt Finkbeiner | LIFTING RACK |
| US4892028A (en) * | 1984-09-10 | 1990-01-09 | Vbm Corporation | Fluid operated circuit for controlling a dual post hydraulic lift assembly |
| DE3836903C1 (en) * | 1988-10-29 | 1990-02-22 | Maschinenfabrik J.A. Becker U. Soehne Neckarsulm Gmbh & Co Kg, 7107 Neckarsulm, De | |
| DE9003685U1 (en) * | 1990-03-29 | 1990-06-07 | Franz Hörnstein GmbH & Co. KG, 7100 Heilbronn | Lifting platform for motor vehicles |
-
1990
- 1990-06-12 DE DE4018726A patent/DE4018726A1/en not_active Withdrawn
-
1991
- 1991-02-20 DE DE59101766T patent/DE59101766D1/en not_active Expired - Fee Related
- 1991-02-20 EP EP91102414A patent/EP0461341B1/en not_active Expired - Lifetime
- 1991-02-20 AT AT91102414T patent/ATE106359T1/en not_active IP Right Cessation
- 1991-05-02 US US07/695,050 patent/US5129483A/en not_active Expired - Fee Related
- 1991-06-11 JP JP3138916A patent/JPH04226298A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108128723A (en) * | 2017-12-31 | 2018-06-08 | 江俊华 | Dam lifting device is built in a kind of hydraulic engineering |
Also Published As
| Publication number | Publication date |
|---|---|
| US5129483A (en) | 1992-07-14 |
| JPH04226298A (en) | 1992-08-14 |
| DE59101766D1 (en) | 1994-07-07 |
| EP0461341A1 (en) | 1991-12-18 |
| ATE106359T1 (en) | 1994-06-15 |
| DE4018726A1 (en) | 1992-01-02 |
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