EP2534086A1 - Set-up device for scissor lifts - Google Patents

Set-up device for scissor lifts

Info

Publication number
EP2534086A1
EP2534086A1 EP11700812A EP11700812A EP2534086A1 EP 2534086 A1 EP2534086 A1 EP 2534086A1 EP 11700812 A EP11700812 A EP 11700812A EP 11700812 A EP11700812 A EP 11700812A EP 2534086 A1 EP2534086 A1 EP 2534086A1
Authority
EP
European Patent Office
Prior art keywords
lever
scissor
linear actuator
setting
extended position
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.)
Granted
Application number
EP11700812A
Other languages
German (de)
French (fr)
Other versions
EP2534086B1 (en
Inventor
Veronika Bleeker
Andreas Gartner
Thomas Grötzinger
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.)
Maha Maschinenbau Haldenwang GmbH and Co KG
Maha GmbH and Co KG
Original Assignee
Maha Maschinenbau Haldenwang GmbH and Co KG
Maha GmbH and Co KG
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 Maha Maschinenbau Haldenwang GmbH and Co KG, Maha GmbH and Co KG filed Critical Maha Maschinenbau Haldenwang GmbH and Co KG
Publication of EP2534086A1 publication Critical patent/EP2534086A1/en
Application granted granted Critical
Publication of EP2534086B1 publication Critical patent/EP2534086B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, 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
    • B66F7/00Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/08Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement hydraulically or pneumatically operated
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, 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
    • B66F3/00Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25Constructional features
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, 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
    • B66F7/00Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/065Scissor linkages, i.e. X-configuration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, 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
    • B66F3/00Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/08Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
    • B66F3/12Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated comprising toggle levers

Definitions

  • the present invention relates to a set-up device for scissor lifts, in particular for the lifting of motor vehicles, which requires a reduced force to lift in the initial phase of the lifting movement and generates a low mechanical load on the set-up.
  • the scissor lift has a compact design in the retracted position.
  • Scissor lifts are used in various technical fields for lifting various loads and possibly even people. Different versions of scissor lifts are also used for lifting motor vehicles, especially cars, SUVs and vans, repair shops, manufacturing plants and also in testing operations, due to the simple Hub technology, the robust design and the possibility of a floor level arrangement of the retracted scissor lift ,
  • At least two congruent shears are used for the construction of the lifting mechanism. If particularly high heights can be reached, then one can arrange several such pairs of scissors one above the other, resulting in, for example, double scissor lifts or multiple scissor lifts.
  • Scissor lifts are in the deflated state have the lowest possible height to facilitate the application of the loads to be lifted in this position.
  • the lifts for motor vehicles should protrude in their lowered position as little as possible over the bottom surface, so as to facilitate the driving of the vehicles.
  • it can also account for a special pit at the construction site. - -
  • DE 299209 34 U1 shows an erection mechanism for a scissor lift which, by means of an expansion lever, two rolling elements and a stop plate, makes possible a larger angle between the lifting cylinder and the scissor stay and thus a more favorable lever engagement ratio and easier setting up of the scissor lift.
  • the form of the expansion lever shown in DE 299209 34 U1 results in a high material tension, in particular at the areas which are in contact with the stop plate. This leads to a high material stress or a high mechanical load and requires in connection with the rolling bearings a comparatively expensive production. Another disadvantage is the noise generated by the expansion lever on the stop plate.
  • the setting-up device for scissor lifts comprises at least two intersecting scissor beams, a linear actuator for lifting the scissor struts, a double lever joint, which is pivotally mounted on a scissor stay, wherein the double lever joint couples the lifting movement of the linear actuator to at least one scissor stay.
  • the double lever joint allows a particularly advantageous lever ratio when lifting a scissor lift from a lower retracted position.
  • the double lever joint according to the invention consists of a first and a second lever element, which communicate with each other.
  • the first and the second lever element are pivotally mounted in its connecting region about an axis. - -
  • an extendable section of the linear actuator for example the piston head of a hydraulic or pneumatic cylinder, can be connected to this pivot axis.
  • a scissor beam is pivotally connected at a first location to the first lever member and pivotally connected at a second location to the second lever member.
  • the scissor lift may comprise a further pair of intersecting scissor beams, which is also connected to the double lever joint.
  • the first pair of scissor bars can be on the left and the second pair of scissor bars on the right side of the double lever joint.
  • the double lever joint may be located between the two pairs of scissor bars and articulated therewith.
  • an extension of the linear actuator from a lower rest position into a first extended position can produce an erection of the second lever element relative to the extension direction of the linear actuator and relative to the longitudinal axis of the scissor spar.
  • This arrangement of the first and second lever element enables a particularly efficient coupling of the lifting movement of the linear actuator to a scissor beam with an advantageous angle of attack during the lifting phase of the scissor lift from a lower resting state.
  • the pivot axis ie the common pivot axis of the first and second lever element of the double lever joint, be stored in a slot of the first lever member, wherein the extension of the linear actuator in the first extended position shifts the pivot axis along the slot.
  • the leadership of the pivot axis through the slot of the first lever member allows a particularly quiet, predetermined erection of the lever member.
  • the end portion of the slot is an anchor point, which can be dispensed with a separate, known from the prior art on the scissor bar stop plate. If a lever element with slot is used, the achievement of this stop position of the slot determines the achievement of the first extended position.
  • the double lever joint with Slot also allows an advantageous tensile stress of the component during the installation process.
  • the first and / or the second lever element may each consist of two parallel arranged lever plates, which are each arranged pivotably and in parallel via hinge pins.
  • the two lever plates of the first lever element can each be hinged to a scissor spar at one of its end regions, while in a second end region they are in communication with the extendable piston head of the lifting cylinder on opposite sides.
  • the two lever plates of the second lever element can be arranged parallel and equidistantly to each other via a hinge pin and hingedly connected via this hinge pin with a scissor stay of the scissor lift, while they are pivotally mounted simultaneously with an end portion of the lifting plates of the first lever element.
  • the second lever element can be movably mounted on a guide element in a second end region, wherein the extension of the linear actuator into the first extended position produces an opposite movement of the second end region of the second lever element.
  • This guide element may be a guide plate attached to the scissor spar.
  • the second lever element can be slidably mounted on the guide plate via a push element articulated on the second end region.
  • the second lever element consists of two parallel lever plates, advantageously two sliding elements can be pivotally attached to each end region of the lever plates.
  • the guide plate can have a central recess - - Have for receiving the second end portion of the second lever member during the extension of the linear actuator in the first extended position.
  • a thrust element at the second end region between the lever plates can be pivotally mounted, wherein the guide plate has a central recess for receiving the thrust element during extension of the linear actuator in the first extended position.
  • a scissor lift comprises at least one setting-up device according to the invention.
  • four set-up devices can be used for a scissor lift, wherein two of the scissor beams are each assigned to a running surface.
  • the present invention enables a scissor lift installation device that allows for a reduction in lift force during deployment from a lower retracted position.
  • the erection device according to the invention is realized by cost-effectively erecting components, which include the double lever joint, the guide plate and the pushers. Become the components can be realized with high stability, at the same time allow a very quiet Aufraumsvorgang and ensure low mechanical stress on the installation components. - -
  • FIG. 1 shows a perspective view of the deployment device according to an embodiment of the present invention
  • Fig. 2A is a perspective view of a lever plate of the first lever member
  • Fig. 2B is a perspective view of a lever plate of the second lever member
  • Fig. 2C is a perspective view of the pushing member
  • Fig. 2D is a perspective view of the guide plate
  • FIG. 3 is an enlarged perspective view of the erector device according to an embodiment of the present invention.
  • FIG. 4B shows a side view of the installation device in a first extended position
  • FIG. 4C shows a side view of the mounting device in a second extended position according to an exemplary embodiment of the present invention.
  • Fig. 1 shows a perspective view of the installation of a scissor lift for lifting motor vehicles (not shown) according to an embodiment of the present invention.
  • the remaining components of a scissor lift such as rails, footprints, control units, etc., which are executed in the usual way, not further illustrated.
  • the erection device according to the invention is also suitable for the use of double scissor lifts.
  • the erection device comprises two intersecting scissor bars 60, 70 for lifting a scissor lift.
  • the two scissor beams 60, 70 are connected to each other via a pivot joint 61.
  • a line Araktuator 10 in the form of a hydraulic cylinder with a non-extendable portion 11 and an extendable portion 12 (cylinder piston rod) serves as a drive unit.
  • a radial sliding bearing is attached to the end, in which a hinge pin 26 is located, which protrudes from the respective end bearing of the sliding bearing.
  • the hinge pin 23 forms a central pivot axis 23 of the double lever joint 20.
  • the double lever joint 20 comprises a first 21 and a second 22 lever element, by means of which the lifting movement of the linear actuator 10 is coupled to the scissor bar 60.
  • the two lever elements of the double lever joint at the beginning of the lifting operation in the lowered state can set up or tilt compared to the longitudinal axis of both the linear actuator 10 and the scissor beam 60, which below standing on the basis Figures 4A-4C will be described in more detail. This results in more favorable lever engagement ratios and lever geometries, which leads to a reduction in the lifting force to be applied by the linear actuator.
  • the first lever member 21 is pivotally connected to the scissor beam 60 via a hinge pin 25, wherein a sliding bush in the scissor stay 60 receives the hinge pin 25.
  • the deployment device further comprises a second, front pair of intersecting scissor struts (not shown) located parallel to the first pair of scissor struts (60, 70). To clarify the structure and the principle of operation of the erection device according to the invention, this second pair of scissor struts was not shown in the figures.
  • the first lever element 21 consists of two identical lever plates 21a, 21b.
  • the rear plate 21b is pivotally connected via the bolt 25 to the inner scissor spar 60 of the rear pair of piles, while the front plate 21a is also connected to a bolt 25 pivotally connected to the inner spar of the front pair of pens (not shown).
  • lever plate 21a is shown in Fig. 2A.
  • the lever plate 21a has in plan view the shape of an elongated rectangle with strongly rounded end portions.
  • the lever plate 21a has at one end a circular bore whose center lies on the longitudinal axis of the plate 21a. By means of this bore, the plate is fastened via the hinge pin 25 to the inner of the intersecting scissor struts.
  • the lever plate 21a has a slot 24 whose longitudinal axis lies on the longitudinal axis of the lever plate 21a.
  • the extendable portion 12 of the lifting unit 10 in its head a sliding bearing for receiving the hinge pin 26, wherein at the two protruding from the sliding bearing outer ends of the hinge pin 26 in addition, the two lever plates 21a, 21b of the first lever member 21 and the two lever plates 22a, 22b of the second lever member 22 are pivotally mounted.
  • the elongated hole 24 of the lever plates 21a, 21b serves to receive this hinge pin 26, wherein a protruding end of the hinge pin 26 is slidably mounted with play adaptation in the slot 24 of the plate 21a, while the opposite end of the hinge pin 26 in the slot 24 of the plate 21b is stored.
  • an extension of the section 12 of the linear actuator 10 displaces the bolt 26 along the slot 24 until this bolt strikes against the end of the slot 24.
  • the lever plates 22a, 22b of the second lever element 22 are arranged parallel to one another via the two hinge pins 26 and 27.
  • the lever plates 22a, 22b are connected via the hinge pin 27 with the scissors spar 60.
  • the inner scissor spar of the second pair of hoppers (not shown) to which the plate 22a is connected via the bolt 27.
  • pushers 30 are fixed to the two outer sides of the lever plates 22a, 22b by means of the hinge pin 28.
  • the lever plate 22a of the second lever member 22, which is structurally identical to the lever plate 22b, is described in more detail in FIG. 2B.
  • the lever plates 22a, 22b have three circular bores along the longitudinal axis of the plates.
  • the lever plates 22a, 22b with a thickness of 20 mm are made, for example, of steel S355, which is characterized by a high yield strength, weldability and anti-burst safety.
  • the contour of the lever can be cut out of a plate, for example by laser cutting.
  • the lever elements of the double lever joint are easier and cheaper to manufacture due to the simple milling contour.
  • the shapes of the lever plates shown in FIGS. 2A and 2B allow a favorable power flow which is as straight as possible, so that a comparatively low voltage value occurs in typical application scenarios and thus leads to a reduced mechanical load.
  • the thrust element 30 corresponds to a sliding stone, which rests on the guide plate 40. During the installation process, the thrust element 30 shifts on the guide plate 40. For optimum sliding, a lubricating film is applied between these two components.
  • the pusher 30 is shown in more detail in FIG. 2C.
  • the thrust element 30 has rounded corners, which counteract the removal of the lubricating film in both directions of travel on the bearing surface. In addition, these curves have the advantage that small twists do no damage on the surface of the plate 40 during lowering of the lever stage.
  • the thrust element 30 must be additionally secured by, for example, a spring or a pin against rotation.
  • two and per scissor lift four push elements 30 are installed per set-up. To ensure the minimum distance to all adjacent components points the pusher 30 has the upper chamfers shown in FIG. The greatest stresses in this component occur shortly before the lever reaches the stop. The compressive stress is at this moment substantially about 270 N / mm 2 .
  • the guide plate 40 shown in FIG. 2D has a central recess 41 for receiving the second end region 29 of the second lever element 22. This makes it possible to move the lever plates 22a, 22b during the installation process in the region 41, without falling below the required minimum distance to the other components. As a result, a more stable design of the lever plates 22a, 22b of the second lever element 22 is made possible.
  • the 330mm x 270mm x 25mm sized guide plate 40 in the illustrated embodiment is welded to the scissor stay 70 on each side of the scissor lift.
  • the pushers 30 slide on this plate 40.
  • the left and right sides of the guide plate 40 are welded to the scissor arm with a lap joint. Due to the positioning of the pushers 30 on the sides, the moment is less on the sides than on the positioning of only one pusher 30 in the middle of the plate 40. To achieve good stress distribution in the corners, they are rounded off with large radii.
  • the just described elements of the erector are shown in the enlarged perspective view of FIG. 3 again.
  • the second lever element 22 consists of a lever plate, wherein the cylinder head 12 of the linear actuator 10 is formed fork-shaped for pivotally mounting the second lever plate. At the end region of the second lever element 22 are on opposite lying sides of the lever plate of the second lever member each have two thrust elements 30 for sliding mounting on the guide plate 40 is mounted.
  • Fig. 4A are the scissor beams 60, 70 and thus the scissors lift in a lowered lower position, which is provided for the startup of a motor vehicle.
  • the ünearaktuator 10 is in a retracted state; the longitudinal axis of the linear actuator has only a very small angle of about 3 ° to the horizontal.
  • the axis 23, which connects the lifting piston 12, the first lever element 21 and the second lever element 22 via the bolt 26, is located in a left end region of the elongated hole 24 shown in the drawing.
  • the double lever joint 20 likewise has a nearly extended, horizontal Orientation, wherein the first 21 and the second 22 lever member form an angle of approximately 180 ° to each other.
  • FIG. 4B shows the installation device after the lifting piston 12 of the linear actuator 10 has been extended to a first extended position.
  • first extended position of the extendable portion 12 moves the bolt 26 along the slot 24 until it stops at the right end of the slot 24.
  • the second lever member 22 reaches when reaching the stop at the end of the slot 24 a statically determined position.
  • the longitudinal axis of the linear actuator has an inclined position of approximately 15 ° to 20 ° to the horizontal.
  • the extension movement of the linear actuator generates a torque on the second lever element 22 of the double lever joint 20 about the axis of rotation of the hinge pin 27 and leads to a rotational movement and erection of the second lever element 22.
  • the lower end of the second lever element 22 slides along with the push elements 30 Guide plate 40 in the direction of the longitudinal axis of the linear actuator 10 in opposite directions to the extension movement of the section 12 of the linear actuator 10.
  • the two lever elements of the double lever joint are set up or tilted by the extension of the linear actuator in the first extended position with respect to the longitudinal axis of both the linear actuator 10 and the scissor beam 60 in comparison to the longitudinal axis.
  • This erection leads to a spreading apart of the scissor arms 60, 70, the double lever joint initiating a vertical force component applied by the lifting cylinder, which is forwarded via the piston rod 12 into the bolt 26 into the second lever element, via the bolt 27 to the scissor stay 60.
  • the erection of the second lever element in this case leads to an advantageous angle of attack for applying a lever force, whereby the lifting force to be applied by the linear actuator is reduced.
  • the second front pair of scissor bars not shown in the figures, is spread apart like the scissor bars 60, 70.
  • Fig. 4C shows a second extended position, upon continuation of the lifting movement after reaching the first extended position. After the stop position of the slide pin 26 is reached at the end of the slot 24, lift the pushers 30 under the action of the linear actuator of the guide plate 40 from.
  • the guide plate is welded to the scissor stay 70.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Abstract

The invention relates to a set-up device for scissor lifts, in particular for raising motor vehicles, which during the starting phase of the lifting movement requires a reduced force for raising. The set-up device for scissor lifts comprises at least two scissor struts (60, 70) which cross one another, a linear actuator (10) for raising a scissor strut, a double lever joint (20) which is pivotably mounted on a scissor strut (60); wherein the double lever joint (20) couples the lifting movement of the linear actuator to at least one scissor strut (60).

Description

- -  - -
AUFSTELLVORRICHTUNG FÜR SCHERENHEBEBÜHNEN INSTALLATION DEVICE FOR SCISSOR PLATFORMS
Die vorliegende Erfindung betrifft eine Aufstellvorrichtung für Scherenhebebühnen, insbesondere für das Anheben von Kraftfahrzeugen, die in der Anfangsphase der Hubbewegung eine verringerte Kraft zum Anheben erfordert und eine geringe mechanische Belastung der Aufstellbauteile erzeugt. Zudem weist die Scherenhebe- bühne einen kompakten Aufbau in der eingefahrenen Stellung auf. The present invention relates to a set-up device for scissor lifts, in particular for the lifting of motor vehicles, which requires a reduced force to lift in the initial phase of the lifting movement and generates a low mechanical load on the set-up. In addition, the scissor lift has a compact design in the retracted position.
Scherenhebebühnen werden auf unterschiedlichen technischen Gebieten zum Anheben verschiedenartiger Lasten und ggf. auch Personen eingesetzt. Unterschiedliche Ausführungen von Scherenhebebühnen werden auch zum Anheben von Kraftfahrzeugen, insbesondere Pkws, Geländewagen und Transportern, in Reparaturwerkstätten, in Herstellungsbetrieben und auch in Prüfbetrieben eingesetzt, und zwar aufgrund der einfachen Hub-Technologie, der robusten Bauweise und der Möglichkeit einer bodenebenen Anordnung der eingefahrenen Scherenhebebühne. Scissor lifts are used in various technical fields for lifting various loads and possibly even people. Different versions of scissor lifts are also used for lifting motor vehicles, especially cars, SUVs and vans, repair shops, manufacturing plants and also in testing operations, due to the simple Hub technology, the robust design and the possibility of a floor level arrangement of the retracted scissor lift ,
Für die Konstruktion des Hubmechanismus werden mindestens zwei deckungsgleiche Scheren verwendet. Sollen besonders große Höhen erreichbar sein, so kann man mehrere solcher Scherenpaare übereinander anordnen, wodurch sich beispielsweise Doppelscheren-Hebebühnen oder Mehrfachscheren-Hebebühnen ergeben. At least two congruent shears are used for the construction of the lifting mechanism. If particularly high heights can be reached, then one can arrange several such pairs of scissors one above the other, resulting in, for example, double scissor lifts or multiple scissor lifts.
Scherenhebebühnen sollen im abgelassenen Zustand eine möglichst geringe Bauhöhe aufweisen, um das Aufbringen der anzuhebenden Lasten in dieser Stellung zu erleichtern. Besonders die Hebebühnen für Kraftfahrzeuge sollen in ihrer abgesenkten Stellung möglichst wenig über die Bodenfläche vorstehen, um so das Auffahren der Kraftfahrzeuge zu erleichtern. Des Weiteren kann dabei auch am Aufbauort eine besondere Einbaugrube entfallen. - - Scissor lifts are in the deflated state have the lowest possible height to facilitate the application of the loads to be lifted in this position. In particular, the lifts for motor vehicles should protrude in their lowered position as little as possible over the bottom surface, so as to facilitate the driving of the vehicles. Furthermore, it can also account for a special pit at the construction site. - -
Bei Scherenhebebühnen ergibt sich hierbei allerdings die Problematik, dass die gegeneinander verschwenkbaren Scherenholme im abgesenkten Zustand der Hebebühne aus Platzgründen möglichst parallel nebeneinander liegen müssen, wo- durch sich in der Anfangsphase der Hubbewegung ungünstige Hebelgeometrien für die Hubeinrichtungen ergeben. In the case of scissor lifts, however, there is the problem that the mutually pivotable scissor struts in the lowered state of the lift for reasons of space as parallel as possible must be next to each other, resulting in unfavorable lever geometries for the lifting devices in the initial phase of the lifting movement.
Allgemein gilt, dass je weiter der Angriffspunkt des Hubzylinders an der Lagerstelle des Scherenarms von dem zugehörigen Schwenkpunkt entfernt ist, und je näher der Winkel zwischen den Längsachsen der Scherenholme und des Hubzylinders an 90° ist, desto vorteilhafter wird das Hebelverhältnis und infolgedessen sinken die erforderlichen Kräfte für das Ausschieben des Hubzylinders. In general, the farther the point of application of the lifting cylinder is located at the bearing point of the scissor arm of the associated pivot point, and the closer the angle between the longitudinal axes of the scissor struts and the lifting cylinder at 90 °, the more advantageous is the lever ratio and consequently decrease the required Forces for pushing out the lifting cylinder.
Bei einer bekannten Doppelscheren-Hebebühne befinden sich Lager zur gelenki- gen Verbindung einer unteren Schere und einer oberen Schere einer Grundrahmenseite jeweils an den aneinander angrenzenden Enden der als geradlinige Träger ausgebildeten Scherenholme. Beim Absenken der Plattform können sich daher die Scherenholme nicht in die vollständig waagerechte Lage bewegen, weil die Lager jeweils auf den Oberseiten der Scherenholme der unteren Schere aufliegen. Die Scherenholme verbleiben somit in einer geringfügigen Neigung, wodurch die Mindesthöhe der Plattform im abgesenkten Zustand, das ist die Bauhöhe, bestimmt ist. In a known double-scissors lift, bearings for articulating a lower pair of scissors and an upper pair of scissors on a base frame side are respectively provided at the adjacent ends of the scissor struts formed as rectilinear beams. When lowering the platform, therefore, the scissor beams can not move in the fully horizontal position, because the bearings each rest on the tops of the scissor beams of the lower pair of scissors. The scissor beams thus remain in a slight inclination, whereby the minimum height of the platform in the lowered state, which is the height, is determined.
Daraus resultiert ein weiteres Problem, nämlich dass sich mit abnehmender Hub- höhe ungünstigere Hebelangriffsverhältnisse für den oder die Hubzylinder ergeben, so dass für das Anheben des Hubtisches oder der gleichen Lastaufnahme einer Hebebühne aus ihrer abgesenkten Lage im Vergleich zur Nennlast vielfach höhere Druckkräfte für den/die Hubzylinder erforderlich sind. Herkömmliche Scherenhebebühnen können daher nicht weiter zusammengefahren werden, als bis zu einer unteren Lage, in welcher der an der Hebebühne angreifende Hubzylinder noch einen Angriffswinkel von wenigen Winkelgrad aufweist. - - This results in a further problem, namely that with decreasing lifting height unfavorable leverage conditions for the lift cylinder or cylinders arise, so that for lifting the lift table or the same load bearing a lift from its lowered position compared to the nominal load often higher pressure forces for / the lifting cylinders are required. Conventional scissor lifts can therefore not be moved together, as to a lower layer in which the attacking on the lift cylinder still has an angle of attack of a few degrees. - -
DE 299209 34 Ul zeigt einen Aufstellmechanismus für eine Scherenhebebühne, der mittels eines Spreizhebels, zweier Wälzkörper und einer Anschlagsplatte einen größeren Winkel zwischen Hubzylinder und Scherenholm und damit ein günstigeres Hebelangriffsverhältnis und leichteres Aufstellen der Scherenhebebühne er- möglicht. Die in DE 299209 34 Ul gezeigte Form des Spreizhebels führt jedoch zu einer hohen Materialspannung, insbesondere an den Bereichen, die mit der Anschlagplatte in Kontakt stehen. Dies führt zu einer hohen Materialbeanspruchung bzw. einer hohen mechanischen Belastung und erfordert in Verbindung mit den Wälzlagern eine vergleichsweise teure Fertigung. Ein weiterer Nachteil ist die Ge- räuschentwicklung, die der Spreizhebel an der Anschlagsplatte erzeugt. DE 299209 34 U1 shows an erection mechanism for a scissor lift which, by means of an expansion lever, two rolling elements and a stop plate, makes possible a larger angle between the lifting cylinder and the scissor stay and thus a more favorable lever engagement ratio and easier setting up of the scissor lift. However, the form of the expansion lever shown in DE 299209 34 U1 results in a high material tension, in particular at the areas which are in contact with the stop plate. This leads to a high material stress or a high mechanical load and requires in connection with the rolling bearings a comparatively expensive production. Another disadvantage is the noise generated by the expansion lever on the stop plate.
Es ist daher eine Aufgabe der vorliegenden Erfindung eine Aufstellvorrichtung für eine Scherenhebebühne bereitzustellen, die die in der Anfangsphase der Hubbewegung benötigten Kräfte verringert und die einen kompakten Aufbau der Sche- renhebebühne im abgesenkten Zustand ermöglicht. Es ist eine weitere Aufgabe der vorliegenden Erfindung die Aufstellvorrichtung mit kostengünstigen Bauteilen zu realisieren, die ein geräuscharmes Aufrichten ermöglicht. It is therefore an object of the present invention to provide an installation device for a scissor lift, which reduces the forces required in the initial phase of the lifting movement and allows a compact construction of the scissor lift in the lowered state. It is a further object of the present invention to realize the erector with low cost components that allows for low noise erecting.
Diese Aufgabe wird durch eine Aufstell Vorrichtung gemäß den Merkmalen des Pa- tentanspruchs 1 gelöst. Die abhängigen Patentansprüche betreffen vorteilhafte Ausgestaltungen der Erfindung. This object is achieved by an erection device according to the features of patent claim 1. The dependent claims relate to advantageous embodiments of the invention.
Erfindungsgemäß umfasst die Aufstellvorrichtung für Scherenhebebühnen zumindest zwei sich kreuzende Scherenholme, einen Linearaktuator zum Anheben der Scherenholme, ein Doppelhebelgelenk, das schwenkbar an einem Scherenholm gelagert ist, wobei das Doppelhebelgelenk die Hubbewegung des Linearaktuators an mindestens einen Scherenholm koppelt. Das Doppelhebelgelenk ermöglicht dabei ein besonders vorteilhaftes Hebelverhältnis beim Anheben einer Scherenhebebühne aus einer unteren eingefahrenen Position. Das erfindungsgemäße Doppelhebelgelenk besteht aus einem ersten und einem zweiten Hebelelement, die miteinander in Verbindung stehen. Vorzugsweise sind das erste und das zweite Hebelelement in ihrem Verbindungsbereich um eine Achse schwenkbar gelagert. - - According to the invention, the setting-up device for scissor lifts comprises at least two intersecting scissor beams, a linear actuator for lifting the scissor struts, a double lever joint, which is pivotally mounted on a scissor stay, wherein the double lever joint couples the lifting movement of the linear actuator to at least one scissor stay. The double lever joint allows a particularly advantageous lever ratio when lifting a scissor lift from a lower retracted position. The double lever joint according to the invention consists of a first and a second lever element, which communicate with each other. Preferably, the first and the second lever element are pivotally mounted in its connecting region about an axis. - -
Hierbei kann ein ausfahrbarer Abschnitt des Linearaktuators, beispielsweise der Kolbenkopf eines Hydraulik- oder Pneumatikzylinders, mit dieser Schwenkachse in Verbindung stehen. Weiterhin ist vorteilhafterweise ein Scherenholm an einer ersten Stelle schwenkbar mit dem ersten Hebelelement verbunden ist und an einer zweiten Stelle schwenkbar mit dem zweiten Hebelelement verbunden ist. Die Scherenhebebühne kann ein weiteres Paar sich kreuzender Scherenholme umfassen, das ebenfalls mit dem Doppelhebelgelenk verbunden ist. Hier kann sich das erste Paar Scherenholme auf der linken und das zweite Paar Scherenholme auf der rechten Seite des Doppelhebelgelenks befinden. Mit anderen Worten kann sich das Doppelhebelgelenk zwischen den beiden Paaren von Scherenholme befinden und dort gelenkig mit diesen in Verbindung stehen. In this case, an extendable section of the linear actuator, for example the piston head of a hydraulic or pneumatic cylinder, can be connected to this pivot axis. Furthermore, advantageously, a scissor beam is pivotally connected at a first location to the first lever member and pivotally connected at a second location to the second lever member. The scissor lift may comprise a further pair of intersecting scissor beams, which is also connected to the double lever joint. Here, the first pair of scissor bars can be on the left and the second pair of scissor bars on the right side of the double lever joint. In other words, the double lever joint may be located between the two pairs of scissor bars and articulated therewith.
Weiterhin kann ein Ausfahren des Linearaktuators aus einer unteren Ruheposition in eine erste Ausfahrposition ein Aufstellen des zweiten Hebelelements relativ zur Ausfahrrichtung des Linearaktuators und relativ zur Längsachse des Scherenholms erzeugen. Diese Anordnung des ersten und zweiten Hebelelements ermöglicht eine besonders effiziente Kopplung der Hubbewegung des Linearaktuators an einen Scherenholm mit einem vorteilhaften Anstellwinkel während der Anhebephase der Scherenhebebühne aus einem unteren Ruhezustand. Furthermore, an extension of the linear actuator from a lower rest position into a first extended position can produce an erection of the second lever element relative to the extension direction of the linear actuator and relative to the longitudinal axis of the scissor spar. This arrangement of the first and second lever element enables a particularly efficient coupling of the lifting movement of the linear actuator to a scissor beam with an advantageous angle of attack during the lifting phase of the scissor lift from a lower resting state.
Weiterhin kann die Schwenkachse, d.h. die gemeinsame Schwenkachse des ersten und zweiten Hebelelements des Doppelhebelgelenks, in einem Langloch des ersten Hebelelements gelagert sein, wobei das Ausfahren des Linearaktuators in die erste Ausfahrposition die Schwenkachse entlang des Langlochs verschiebt. Die Führung der Schwenkachse durch das Langloch des ersten Hebelelements ermöglicht ein besonders geräuscharmes, vorbestimmtes Aufrichten des Hebelelements. Darüber hinaus stellt der Endbereich des Langlochs einen Anschlagpunkt dar, wodurch auf eine separate, aus dem Stand der Technik bekannte am Scherenholm befestigte Anschlagplatte verzichtet werden kann. Falls ein Hebelelement mit Langloch verwendet wird, legt das Erreichen dieser Anschlagposition des Langlochs das Erreichen der ersten Ausfahrposition fest. Das Doppelhebelgelenk mit Langloch ermöglicht weiterhin eine vorteilhafte Zugbeanspruchung des Bauteils während des Aufstell Vorgangs. Furthermore, the pivot axis, ie the common pivot axis of the first and second lever element of the double lever joint, be stored in a slot of the first lever member, wherein the extension of the linear actuator in the first extended position shifts the pivot axis along the slot. The leadership of the pivot axis through the slot of the first lever member allows a particularly quiet, predetermined erection of the lever member. In addition, the end portion of the slot is an anchor point, which can be dispensed with a separate, known from the prior art on the scissor bar stop plate. If a lever element with slot is used, the achievement of this stop position of the slot determines the achievement of the first extended position. The double lever joint with Slot also allows an advantageous tensile stress of the component during the installation process.
Zur Erhöhung der Tragstabilität und Verringerung von Materialspannungen können das erste und/oder der das zweite Hebelelement aus jeweils zwei parallel angeordneten Hebelplatten bestehen, die jeweils über Gelenkbolzen schwenkbar und parallel angeordnet sind. Beispielsweise können die zwei Hebelplatten des ersten Hebelelements an einem ihrer Endbereiche jeweils gelenkig an einem Scherenholm befestigt sein, während sie in einem zweiten Endbereich mit dem ausfahrba- ren Kolbenkopf des Hubzylinders jeweils an gegenüberliegenden Seiten in Verbindung stehen. Beispielsweise können die zwei Hebelplatten des zweiten Hebelelements über einen Gelenkbolzen parallel und äquidistant zueinander angeordnet und über diesen Gelenkbolzen mit einem Scherenholm der Scherenhebebühne gelenkig verbunden sein, während sie gleichzeitig mit einem Endbereich der He- beiplatten des ersten Hebelelements schwenkbar gelagert sind. To increase the supporting stability and reduce material stresses, the first and / or the second lever element may each consist of two parallel arranged lever plates, which are each arranged pivotably and in parallel via hinge pins. For example, the two lever plates of the first lever element can each be hinged to a scissor spar at one of its end regions, while in a second end region they are in communication with the extendable piston head of the lifting cylinder on opposite sides. For example, the two lever plates of the second lever element can be arranged parallel and equidistantly to each other via a hinge pin and hingedly connected via this hinge pin with a scissor stay of the scissor lift, while they are pivotally mounted simultaneously with an end portion of the lifting plates of the first lever element.
Zur Führung der Drehbewegung des zweiten Hebelelements während des Aufstellvorgangs kann das zweite Hebelelement in einem zweiten Endbereich beweglich auf einem Führungselement lösbar gelagert sein, wobei das Ausfahren des Line- araktuators in die erste Ausfahrposition eine gegenläufige Bewegung des zweiten Endbereichs des zweiten Hebelelements erzeugt. In order to guide the rotational movement of the second lever element during the setting-up operation, the second lever element can be movably mounted on a guide element in a second end region, wherein the extension of the linear actuator into the first extended position produces an opposite movement of the second end region of the second lever element.
Dieses Führungselement kann eine am Scherenholm befestigte Führungsplatte sein. Zur Realisierung einer materialschonenden, geräuscharmen und kontroliier- ten Bewegung des zweiten Hebelelements während des Aufstellvorgangs kann das zweite Hebelelement über ein am zweiten Endbereich gelenkig angebrachtes Schubelement auf der Führungsplatte gleitend gelagert sein. This guide element may be a guide plate attached to the scissor spar. In order to realize a material-sparing, low-noise and controlled movement of the second lever element during the setting-up process, the second lever element can be slidably mounted on the guide plate via a push element articulated on the second end region.
Besteht das zweite Hebelelement aus zwei parallelen Hebelplatten, können vor- teil hafterweise zwei Schubelemente an jedem Endbereich der Hebelplatten schwenkbar angebracht sein. Die Führungsplatte kann eine mittige Aussparung - - aufweisen zur Aufnahme des zweiten Endbereichs des zweiten Hebelelements während des Ausfahrens des Linearaktuators in die erste Ausfahrposition. If the second lever element consists of two parallel lever plates, advantageously two sliding elements can be pivotally attached to each end region of the lever plates. The guide plate can have a central recess - - Have for receiving the second end portion of the second lever member during the extension of the linear actuator in the first extended position.
Weiterhin kann ein Schubelement am zweiten Endbereich zwischen den Hebel- platten schwenkbar befestigt sein, wobei die Führungsplatte eine mittige Aussparung aufweist zur Aufnahme des Schubelements während des Ausfahrens des Linearaktuators in die erste Ausfahrposition. Furthermore, a thrust element at the second end region between the lever plates can be pivotally mounted, wherein the guide plate has a central recess for receiving the thrust element during extension of the linear actuator in the first extended position.
Um einen möglichst geradlinigen Kraftfluss zu realisieren, weisen die Hebelplatten des ersten und des zweiten Hebelelements in der Draufsicht die Form eines länglichen Rechtecks mit stark abgerundeten Endbereichen auf. Weiterhin können die Hebelplatten Aussparungen entlang der Längsachse zur Aufnahme je eines Schwenkbolzens aufweisen. Vorzugsweise umfasst eine Scherenhebebühne mindestens eine erfindungsgemäße Aufstellvorrichtung. Beispielsweise können vier Aufstellvorrichtungen für eine Scherenhebebühne eingesetzt werden, wobei jeweils zwei der Scherenholme einer Fahrfläche zugeordnet sind. Zusammenfassend wird durch die vorliegende Erfindung eine Aufstell Vorrichtung für eine Scherenhebebühne ermöglicht, die eine Reduzierung der Hubkraft während des Aufstellens aus einer unteren eingefahrenen Position ermöglicht. Die erfindungsgemäße Aufstellvorrichtung wird dabei durch kostengünstig herzustellende Aufstellbauteile, zu denen das Doppelhebelgelenk, die Führungsplatte und die Schubelemente zählen, realisiert. Werden können die Komponenten mit hoher Tragstabilität realisiert werden, die gleichzeitig einen sehr geräuscharmen Aufrichtungsvorgang ermöglichen und eine geringe mechanische Belastung der Aufstellbauteile sicherstellen. - - In order to realize a power flow which is as straight as possible, the lever plates of the first and of the second lever element in the plan view have the shape of an elongate rectangle with strongly rounded end regions. Furthermore, the lever plates may have recesses along the longitudinal axis for receiving a respective pivot pin. Preferably, a scissor lift comprises at least one setting-up device according to the invention. For example, four set-up devices can be used for a scissor lift, wherein two of the scissor beams are each assigned to a running surface. In summary, the present invention enables a scissor lift installation device that allows for a reduction in lift force during deployment from a lower retracted position. The erection device according to the invention is realized by cost-effectively erecting components, which include the double lever joint, the guide plate and the pushers. Become the components can be realized with high stability, at the same time allow a very quiet Aufrichtungsvorgang and ensure low mechanical stress on the installation components. - -
Bevorzugte Ausführungsformen und weitere Details der vorliegenden Erfindung werden im Folgenden unter Bezugnahme auf die beigefügten schematischen Zeichnungen näher beschrieben. Fig. 1 zeigt eine perspektivische Ansicht der Aufstell Vorrichtung gemäß einem Ausführungsbeispiel der vorliegenden Erfindung; Preferred embodiments and further details of the present invention will be described in more detail below with reference to the attached schematic drawings. Fig. 1 shows a perspective view of the deployment device according to an embodiment of the present invention;
Fig. 2A zeigt eine perspektivische Ansicht einer Hebelplatte des ersten Hebelelements, Fig. 2B zeigt eine perspektivische Ansicht einer Hebelplatte des zweiten Hebelelements, Fig. 2C zeigt eine perspektivische Ansicht des Schubelements, und Fig. 2D zeigt eine perspektivische Ansicht der Führungsplatte; Fig. 2A is a perspective view of a lever plate of the first lever member, Fig. 2B is a perspective view of a lever plate of the second lever member, Fig. 2C is a perspective view of the pushing member, and Fig. 2D is a perspective view of the guide plate;
Fig. 3 zeigt eine vergrößerte perspektivische Ansicht der Aufstell Vorrichtung gemäß einem Ausführungsbeispiel der vorliegenden Erfindung; FIG. 3 is an enlarged perspective view of the erector device according to an embodiment of the present invention; FIG.
Fig. 4A zeigt eine Seitenansicht der Aufstellvorrichtung im abgesenkten Zustand, Fig. 4B zeigt eine Seitenansicht der Aufstellvorrichtung in einer ersten Ausfahrposition, und Fig. 4C zeigt eine Seitenansicht der Auf stell Vorrichtung in einer zweiten Ausfahrposition gemäß einem Ausführungsbeispiel der vorliegenden Erfindung. 4B shows a side view of the installation device in a first extended position, and FIG. 4C shows a side view of the mounting device in a second extended position according to an exemplary embodiment of the present invention.
Fig. 1 zeigt eine perspektivische Ansicht der Aufstellvorrichtung einer Scherenhebebühne zum Anheben von Kraftfahrzeugen (nicht dargestellt) gemäß einem Ausführungsbeispiel der vorliegenden Erfindung. Zur Verdeutlichung des Prinzips der erfindungsgemäßen Aufstellvorrichtung wurden die übrigen Bestandteile einer Scherenhebebühne wie Fahrschienen, Aufstandsflächen, Bedieneinheiten etc., die in üblicher Weise ausgeführt sind, nicht weiter dargestellt. Die erfindungsgemäße Aufstellvorrichtung eignet sich auch für den Einsatz von Doppelscherenhebebühnen. Wie in Fig. 1 gezeigt, umfasst die Aufstellvorrichtung zwei sich kreuzende Scherenholme 60, 70 zum Anheben einer Scherenhebebühne. Die beiden Scherenholme 60, 70 sind über ein Schwenkgelenk 61 miteinander verbunden. Ein Line- araktuator 10 in Form eines Hydraulikzylinders mit einem nicht ausfahrbaren Bereich 11 und einem ausfahrbaren Abschnitt 12 (Zylinderkolbenstange) dient als Antriebsaggregat. Als Kopf der Hubzylinderkolbenstange 12 ist endseitig ein radiales Gleitlager angebracht, in dem sich ein Gelenkbolzen 26 befindet, der endseitig jeweils aus dem Gleitlager hervorsteht. Der Gelenkbolzen 23 bildet eine mittlere Schwenkachse 23 des Doppelhebelgelenks 20. Fig. 1 shows a perspective view of the installation of a scissor lift for lifting motor vehicles (not shown) according to an embodiment of the present invention. To clarify the principle of the erection device according to the invention, the remaining components of a scissor lift such as rails, footprints, control units, etc., which are executed in the usual way, not further illustrated. The erection device according to the invention is also suitable for the use of double scissor lifts. As shown in Fig. 1, the erection device comprises two intersecting scissor bars 60, 70 for lifting a scissor lift. The two scissor beams 60, 70 are connected to each other via a pivot joint 61. A line Araktuator 10 in the form of a hydraulic cylinder with a non-extendable portion 11 and an extendable portion 12 (cylinder piston rod) serves as a drive unit. As the head of Hubzylinderkolbenstange 12 a radial sliding bearing is attached to the end, in which a hinge pin 26 is located, which protrudes from the respective end bearing of the sliding bearing. The hinge pin 23 forms a central pivot axis 23 of the double lever joint 20.
Das Doppelhebelgelenk 20 umfasst ein erstes 21 und ein zweites 22 Hebelelement, mittels derer die Hubbewegung des Linearaktuators 10 an den Scheren- holm 60 gekoppelt wird. Zur Verbesserung des ungünstigen Anstellwinkels des Linearaktuators 10 beim Anheben der abgesenkten Scherenholme können sich die beiden Hebelelemente des Doppelhebelgelenks zu Beginn des Anhebevorgangs im abgesenkten Zustand aufstellen bzw. verkippen im Vergleich zur Längsachse sowohl des Linearaktuators 10 als auch des Scherenholms 60, was unten stehend anhand der Figuren 4A - 4C noch detaillierter beschrieben wird. Dadurch entstehen günstigere Hebelangriffsverhältnisse und Hebelgeometrien, die zu einer Reduzierung der vom Linearaktuator aufzubringenden Hubkraft führt. Hierzu ist das erste Hebelelement 21 mit dem Scherenholm 60 schwenkbar über einen Gelenkbolzen 25 verbunden, wobei eine Gleitbuchse im Scherenholm 60 den Gelenkbolzen 25 aufnimmt. Neben den Fig. 1 gezeigten hinteren Schereholmen (60, 70) umfasst die Aufstellvorrichtung weiterhin ein zweites, vorderes Paar sich kreuzender Scherenholme (nicht gezeigt), die sich parallel zum ersten Paar Scherenholme (60, 70) befinden. Zur Verdeutlichung des Aufbaus und des Wirkprinzips der erfindungsgemäßen Aufstellvorrichtung wurde dieses zweite Paar Scherenholme in den Figuren nicht dargestellt. Das erste Hebelelement 21 besteht aus zwei baugleichen Hebelplatten 21a, 21b. Die hintere Platte 21b ist über den Bolzen 25 mit dem inneren Scherenholm 60 des hinteren Holmpaares schwenkbar verbunden, während die vordere Platte 21a ebenfalls mit einem Bolzen 25 schwenkbar mit den inneren Holm des vorderen Holmpaares (nicht gezeigt) verbunden ist. - - The double lever joint 20 comprises a first 21 and a second 22 lever element, by means of which the lifting movement of the linear actuator 10 is coupled to the scissor bar 60. To improve the unfavorable angle of the linear actuator 10 when lifting the lowered scissor struts, the two lever elements of the double lever joint at the beginning of the lifting operation in the lowered state can set up or tilt compared to the longitudinal axis of both the linear actuator 10 and the scissor beam 60, which below standing on the basis Figures 4A-4C will be described in more detail. This results in more favorable lever engagement ratios and lever geometries, which leads to a reduction in the lifting force to be applied by the linear actuator. For this purpose, the first lever member 21 is pivotally connected to the scissor beam 60 via a hinge pin 25, wherein a sliding bush in the scissor stay 60 receives the hinge pin 25. In addition to the rear scissors struts (60, 70) shown in Fig. 1, the deployment device further comprises a second, front pair of intersecting scissor struts (not shown) located parallel to the first pair of scissor struts (60, 70). To clarify the structure and the principle of operation of the erection device according to the invention, this second pair of scissor struts was not shown in the figures. The first lever element 21 consists of two identical lever plates 21a, 21b. The rear plate 21b is pivotally connected via the bolt 25 to the inner scissor spar 60 of the rear pair of piles, while the front plate 21a is also connected to a bolt 25 pivotally connected to the inner spar of the front pair of pens (not shown). - -
Eine solche Hebelplatte 21a ist in Fig. 2A gezeigt. Die Hebelplatte 21a weist in der Draufsicht die Form eines länglichen Rechtecks mit stark abgerundeten Endbereichen auf. Die Hebelplatte 21a verfügt an einem Ende über eine kreisrunde Boh- rung deren Mittelpunkt auf der Längsachse der Platte 21a liegt. Mittels dieser Bohrung wird die Platte über den Gelenkbolzen 25 an dem inneren der sich kreuzenden Scherenholme befestigt. An der anderen Seite weist die Hebelplatte 21a ein Langloch 24 auf, dessen Längsachse auf der Längsachse der Hebelplatte 21a liegt. Such a lever plate 21a is shown in Fig. 2A. The lever plate 21a has in plan view the shape of an elongated rectangle with strongly rounded end portions. The lever plate 21a has at one end a circular bore whose center lies on the longitudinal axis of the plate 21a. By means of this bore, the plate is fastened via the hinge pin 25 to the inner of the intersecting scissor struts. On the other side, the lever plate 21a has a slot 24 whose longitudinal axis lies on the longitudinal axis of the lever plate 21a.
Wie in Fig. 1 gezeigt, weist der ausfahrbare Abschnitt 12 des Hubaggregats 10 in seinem Kopfbereich ein Gleitlager zur Aufnahme des Gelenkbolzens 26 auf, wobei an den beiden aus dem Gleitlager hervortretenden äußeren Enden des Gelenkbolzens 26 zusätzlich die beiden Hebelplatten 21a, 21b des ersten Hebelelements 21 und die beiden Hebelplatten 22a, 22b des zweiten Hebelelements 22 schwenkbar gelagert sind. Das Langloch 24 der Hebelplatten 21a, 21b dient zur Aufnahme dieses Gelenkbolzens 26, wobei ein hervorstehendes Ende des Gelenkbolzens 26 jeweils gleitend mit Spielanpassung in dem Langloch 24 der Platte 21a gelagert wird, während das gegenüberliegende Ende des Gelenkbolzens 26 in dem Langloch 24 der Platte 21b gelagert wird. Damit verschiebt ein Ausfahren des Abschnitts 12 des Linearaktuators 10 den Bolzen 26 entlang des Langlochs 24 bis dieser Bolzen an das Ende des Langlochs 24 anschlägt. As shown in Fig. 1, the extendable portion 12 of the lifting unit 10 in its head a sliding bearing for receiving the hinge pin 26, wherein at the two protruding from the sliding bearing outer ends of the hinge pin 26 in addition, the two lever plates 21a, 21b of the first lever member 21 and the two lever plates 22a, 22b of the second lever member 22 are pivotally mounted. The elongated hole 24 of the lever plates 21a, 21b serves to receive this hinge pin 26, wherein a protruding end of the hinge pin 26 is slidably mounted with play adaptation in the slot 24 of the plate 21a, while the opposite end of the hinge pin 26 in the slot 24 of the plate 21b is stored. As a result, an extension of the section 12 of the linear actuator 10 displaces the bolt 26 along the slot 24 until this bolt strikes against the end of the slot 24.
Die Hebelplatten 22a, 22b des zweiten Hebelelements 22 sind über die zwei Ge- lenkbolzen 26 und 27 parallel zueinander angeordnet. Hierbei sind die Hebelplatten 22a, 22b über den Gelenkbolzen 27 mit dem Scherenholm 60 verbunden. Auf der Seite der Hebelplatte 22a befindet sich der innere Scherenholm des zweiten Hollmpaares (nicht gezeigt), mit dem die Platte 22a über den Bolzen 27 verbunden ist. An dem unteren Ende der Hebelplatten 22a, 22b sind Schubelemente 30 an den beiden äußeren Seiten der Hebelplatten 22a, 22b mittels des Gelenkbolzens 28 befestigt. Die Hebelplatte 22a des zweiten Hebelelements 22, die baugleichen zu der Hebelplatte 22b ist, ist in Fig. 2B detaillierter beschrieben. Zur Aufnahme der Bolzen 26, 27, 28 weisen die Hebelplatten 22a, 22b drei kreisförmige Bohrungen entlang der Längsachse der Platten auf. Die Hebelplatten 22a, 22b der Dicke 20 mm wer- den beispielsweise aus Stahl S355 gefertigt, der sich durch eine hohe Streckgrenze, Schweißeignung und Sprodbruchsicherheit auszeichnet. Die Kontur des Hebels kann beispielsweise durch Laserschneiden aus einer Platte heraus geschnitten werden. Im Vergleich zu den bisher aus dem Stand der Technik bekannten Spreizhebeln sind die Hebelelemente des Doppelhebelgelenks einfacher und kostengünstiger aufgrund der einfachen Fräskontur zu fertigen. Darüber hinaus ermöglicht die in Fig. 2A und Fig. 2B gezeigten Formen der Hebelplatten einen günstigen, möglichst geradlinigen Kraftfluss, so dass bei typischen Anwendungsszenarien ein ver- gleichsweise niedriger Spannungswert auftritt und dadurch zu einer verringerten mechanische Belastung führt. The lever plates 22a, 22b of the second lever element 22 are arranged parallel to one another via the two hinge pins 26 and 27. Here, the lever plates 22a, 22b are connected via the hinge pin 27 with the scissors spar 60. On the side of the lever plate 22a is the inner scissor spar of the second pair of hoppers (not shown) to which the plate 22a is connected via the bolt 27. At the lower end of the lever plates 22a, 22b, pushers 30 are fixed to the two outer sides of the lever plates 22a, 22b by means of the hinge pin 28. The lever plate 22a of the second lever member 22, which is structurally identical to the lever plate 22b, is described in more detail in FIG. 2B. To accommodate the bolts 26, 27, 28, the lever plates 22a, 22b have three circular bores along the longitudinal axis of the plates. The lever plates 22a, 22b with a thickness of 20 mm are made, for example, of steel S355, which is characterized by a high yield strength, weldability and anti-burst safety. The contour of the lever can be cut out of a plate, for example by laser cutting. Compared to the spreading levers previously known from the prior art, the lever elements of the double lever joint are easier and cheaper to manufacture due to the simple milling contour. In addition, the shapes of the lever plates shown in FIGS. 2A and 2B allow a favorable power flow which is as straight as possible, so that a comparatively low voltage value occurs in typical application scenarios and thus leads to a reduced mechanical load.
Aufgrund der perspektivischen Darstellung der Fig. 1 ist nur der vordere der beiden Schubelemente 30 sichtbar. Das Schubelement 30 entspricht einem Gleit- stein, der auf der Führungsplatte 40 aufliegt. Während des Aufstell Vorgangs verschiebt sich das Schubelement 30 auf der Führungsplatte 40. Für ein optimales Gleiten wird zwischen diesen beiden Bauteilen ein Schmierfilm angebracht. Due to the perspective view of Fig. 1, only the front of the two push elements 30 is visible. The thrust element 30 corresponds to a sliding stone, which rests on the guide plate 40. During the installation process, the thrust element 30 shifts on the guide plate 40. For optimum sliding, a lubricating film is applied between these two components.
Das Schubelement 30 ist in Fig. 2C detaillierter dargestellt. Das Schubelement 30 weist abgerundete Ecken auf, die in beiden Verfahrrichtungen an der Auflagefläche dem Abtragen des Schmierfilms entgegen wirken. Zusätzlich haben diese Rundungen den Vorteil, dass kleine Verdrehungen während des Absenkens der Hebelbühne keinen Schaden auf der Oberfläche der Platte 40 anrichten. Das Schubelement 30 muss jedoch zusätzlich durch z.B. eine Feder oder einen Stift gegen Verdrehen gesichert werden. In einem Ausführungsbeispiel werden pro Aufstellvorrichtung zwei und pro Scherenhebebühne vier Schubelemente 30 verbaut. Zur Gewährleistung des Mindestabstands zu allen benachbarten Bauteilen weist das Schubelement 30 die in Fig. 20 gezeigten oberen Abschrägungen auf. Die größten Spannungen in diesem Bauteil treten auf, kurz bevor der Hebel den Anschlag erreicht. Die Druckspannung beträgt in diesem Moment im wesentlichen ca. 270 N/mm2. Zur Fertigung des Schubelements 30 wird ein Material mit guten Gleiteigenschaften und hoher Verschleißfestigkeit verwendet, beispielsweise CuSn8P. Eine weitere, kostengünstigere Möglichkeit ist die Verwendung eines abriebfesten Kunststoffs mit guten Gleiteigenschaften, beispielsweise Polyamid (PA) mit einer Glasfaserverstärkung. Die in Fig. 2D gezeigte Führungsplatte 40 weist eine mittige Aussparung 41 zur Aufnahme des zweiten Endbereichs 29 des zweiten Hebelelements 22 auf. Dies ermöglicht ein Bewegen der Hebelplatten 22a, 22b während des Aufstellvorgangs in dem Bereich 41, ohne den erforderlichen Mindestabstand zu den anderen Bauteilen zu unterschreiten. Hierdurch wird eine stabilere Auslegung der Hebelplatten 22a, 22b des zweiten Hebelelements 22 ermöglicht. Die in dem dargestellten Ausführungsbeispiel 330mm x 270mm x 25 mm große Führungsplatte 40 ist an jeder Seite der Scherenhebebühne an dem Scherenholm 70 angeschweißt. Die Schubelemente 30 verschieben sich auf dieser Platte 40. Die linke und rechte Seite der Führungsplatte 40 werden mit einem Überlappstoß am Scherenarm verschweißt. Durch die Positionierung der Schubelemente 30 an den Seiten ist das Moment an den Seiten geringer als bei einer Positionierung lediglich eines Schubelements 30 in der Mitte der Platte 40. Um eine gute Spannungsverteilung in den Ecken zu erreichen, sind diese mit großen Radien abgerundet. Die soeben beschriebenen Elemente der Aufstellvorrichtung sind in der vergrößerten perspektivischen Ansicht der Fig. 3 nochmals dargestellt. The pusher 30 is shown in more detail in FIG. 2C. The thrust element 30 has rounded corners, which counteract the removal of the lubricating film in both directions of travel on the bearing surface. In addition, these curves have the advantage that small twists do no damage on the surface of the plate 40 during lowering of the lever stage. However, the thrust element 30 must be additionally secured by, for example, a spring or a pin against rotation. In one embodiment, two and per scissor lift four push elements 30 are installed per set-up. To ensure the minimum distance to all adjacent components points the pusher 30 has the upper chamfers shown in FIG. The greatest stresses in this component occur shortly before the lever reaches the stop. The compressive stress is at this moment substantially about 270 N / mm 2 . To produce the pusher 30, a material with good sliding properties and high wear resistance is used, for example CuSn8P. Another, cheaper option is the use of an abrasion-resistant plastic with good sliding properties, such as polyamide (PA) with a glass fiber reinforcement. The guide plate 40 shown in FIG. 2D has a central recess 41 for receiving the second end region 29 of the second lever element 22. This makes it possible to move the lever plates 22a, 22b during the installation process in the region 41, without falling below the required minimum distance to the other components. As a result, a more stable design of the lever plates 22a, 22b of the second lever element 22 is made possible. The 330mm x 270mm x 25mm sized guide plate 40 in the illustrated embodiment is welded to the scissor stay 70 on each side of the scissor lift. The pushers 30 slide on this plate 40. The left and right sides of the guide plate 40 are welded to the scissor arm with a lap joint. Due to the positioning of the pushers 30 on the sides, the moment is less on the sides than on the positioning of only one pusher 30 in the middle of the plate 40. To achieve good stress distribution in the corners, they are rounded off with large radii. The just described elements of the erector are shown in the enlarged perspective view of FIG. 3 again.
In einem weiteren nicht dargestellten Ausführungsbeispiel besteht das zweite Hebelelement 22 aus einer Hebelplatte, wobei der Zylinderkopf 12 des Linearaktua- tors 10 zur schwenkbaren Lagerung der zweiten Hebelplatte gabelförmig ausgebildet ist. An dem Endbereich des zweiten Hebelelements 22 sind auf gegenüber- liegenden Seiten der Hebelplatte des zweiten Hebelelement jeweils zwei Schubelemente 30 zur gleitenden Lagerung auf der Führungsplatte 40 angebracht. In a further embodiment, not shown, the second lever element 22 consists of a lever plate, wherein the cylinder head 12 of the linear actuator 10 is formed fork-shaped for pivotally mounting the second lever plate. At the end region of the second lever element 22 are on opposite lying sides of the lever plate of the second lever member each have two thrust elements 30 for sliding mounting on the guide plate 40 is mounted.
Bezug nehmend auf die Fig. 4A bis 4C soll nun die Funktion des Aufstell mecha- nismus anhand drei verschiedener Hubpositionen näher beschrieben werden. With reference to FIGS. 4A to 4C, the function of the installation mechanism will now be described in more detail with reference to three different stroke positions.
In Fig. 4A befinden sich die Scherenholme 60, 70 und damit die Scherenhebebühne in einer abgesenkten unteren Stellung, die für das Auffahren eines Kraftfahrzeugs vorgesehen ist. In dieser Stellung befindet sich der ünearaktuator 10 in einem eingefahrenen Zustand; die Längsachse des Linearaktuators weist nur eine sehr geringe Schräglage von ca. 3° zur Horizontalen auf. Die Achse 23, die über den Bolzen 26 den Hubkolben 12, das erste Hebelelement 21 und das zweite Hebelelement 22 verbindet, befindet sich in einem in der Zeichnung gezeigten linken Endbereich des Langlochs 24. Das Doppelhebelgelenk 20 weist ebenso eine na- hezu gestreckte, horizontale Ausrichtung auf, wobei das erste 21 und das zweite 22 Hebelelement einen Winkel von annähernd 180° zueinander bilden. In Fig. 4A are the scissor beams 60, 70 and thus the scissors lift in a lowered lower position, which is provided for the startup of a motor vehicle. In this position, the ünearaktuator 10 is in a retracted state; the longitudinal axis of the linear actuator has only a very small angle of about 3 ° to the horizontal. The axis 23, which connects the lifting piston 12, the first lever element 21 and the second lever element 22 via the bolt 26, is located in a left end region of the elongated hole 24 shown in the drawing. The double lever joint 20 likewise has a nearly extended, horizontal Orientation, wherein the first 21 and the second 22 lever member form an angle of approximately 180 ° to each other.
Fig. 4B zeigt die Aufstell Vorrichtung, nachdem der Hubkolben 12 des Linearaktuators 10 bis in eine erste Ausfahrposition ausgefahren ist. Beim Ausfahren in diese erste Ausfahrposition verschiebt der ausfahrbare Abschnitt 12 den Bolzen 26 entlang des Langlochs 24 bis zum Anschlag am rechten Ende des Langlochs 24. Das zweite Hebelelement 22 erreicht dabei bei Erreichen des Anschlags am Ende des Langlochs 24 eine statisch bestimmte Position. In dieser ersten Ausfahrposition weist die Längsachse des Linearaktuators eine Schräglage von ca. 15° bis 20° zur Horizontalen auf. 4B shows the installation device after the lifting piston 12 of the linear actuator 10 has been extended to a first extended position. When extending into this first extended position of the extendable portion 12 moves the bolt 26 along the slot 24 until it stops at the right end of the slot 24. The second lever member 22 reaches when reaching the stop at the end of the slot 24 a statically determined position. In this first extended position, the longitudinal axis of the linear actuator has an inclined position of approximately 15 ° to 20 ° to the horizontal.
Die Ausfahrbewegung des Linearaktuators erzeugt ein Drehmoment an dem zweiten Hebelelement 22 des Doppelhebelgelenks 20 um die Drehachse des Gelenkbolzens 27 und führt zu einer Drehbewegung und Aufrichten des zweiten Hebel- elements 22. Dabei gleitet das untere Ende des zweiten Hebelelements 22 mit den Schubelementen 30 entlang der Führungsplatte 40 in Richtung der Längsachse des Linearaktuators 10 gegenläufig zur Ausfahrbewegung des Abschnitts 12 des Linearaktuators 10. Mit anderen Worten werden die beiden Hebelelemente des Doppelhebelgelenks durch das Ausfahren des Linearaktuators in die erste Ausfahrposition bezüglich der Längsachse sowohl des Linearaktuators 10 als auch des Scherenholms 60 aufgestellt bzw. verkippt im Vergleich zur Längsachse. Die- ses Aufstellen führt zu einem Auseinanderspreizen der Scherenarme 60, 70, wobei das Doppelhebelgelenk eine von dem Hubzylinder aufgebrachte Vertikalkraftkomponente, welche über die Kolbenstange 12 in den Bolzen 26 in das zweite Hebelelement weitergeleitet wird, über den Bolzen 27 an den Scherenholm 60 einleitet. Das Aufrichten des zweiten Hebelelements führt dabei zu einem vorteil- haften Angriffswinkel zum Aufbringen einer Hebelkraft, wodurch die vom Linearak- tuator aufzubringende Hubkraft verringert wird. Das in den Figuren nicht gezeigte zweite vordere Paar Scherenholme wird ebenso wie die Scherenholme 60, 70 auseinander gespreizt. Fig. 4C zeigt eine zweite Ausfahrposition, bei Fortsetzung der Hubbewegung nach Erreichen der ersten Ausfahrposition. Nachdem die Anschlagposition des Gleitbolzens 26 am Ende des Langlochs 24 erreicht ist, heben die Schubelemente 30 unter Wirkung des Linearaktuators von der Führungsplatte 40 ab. Die Führungsplatte ist dabei an den Scherenholm 70 angeschweißt. The extension movement of the linear actuator generates a torque on the second lever element 22 of the double lever joint 20 about the axis of rotation of the hinge pin 27 and leads to a rotational movement and erection of the second lever element 22. The lower end of the second lever element 22 slides along with the push elements 30 Guide plate 40 in the direction of the longitudinal axis of the linear actuator 10 in opposite directions to the extension movement of the section 12 of the linear actuator 10. In other words, the two lever elements of the double lever joint are set up or tilted by the extension of the linear actuator in the first extended position with respect to the longitudinal axis of both the linear actuator 10 and the scissor beam 60 in comparison to the longitudinal axis. This erection leads to a spreading apart of the scissor arms 60, 70, the double lever joint initiating a vertical force component applied by the lifting cylinder, which is forwarded via the piston rod 12 into the bolt 26 into the second lever element, via the bolt 27 to the scissor stay 60. The erection of the second lever element in this case leads to an advantageous angle of attack for applying a lever force, whereby the lifting force to be applied by the linear actuator is reduced. The second front pair of scissor bars, not shown in the figures, is spread apart like the scissor bars 60, 70. Fig. 4C shows a second extended position, upon continuation of the lifting movement after reaching the first extended position. After the stop position of the slide pin 26 is reached at the end of the slot 24, lift the pushers 30 under the action of the linear actuator of the guide plate 40 from. The guide plate is welded to the scissor stay 70.
Die einzelnen Merkmale der Erfindung sind selbstverständlich nicht auf die beschriebenen Kombinationen von Merkmalen in Rahmen der vorgestellten Ausführungsbeispiele beschränkt und können in Abhängigkeit vorgegebener Vorrich- tungsparameter auch in anderen Kombinationen eingesetzt werden. Die angegebenen Beispielwerte für die Bauteilgrößen, Anstellwinkel, Materialspannungen etc. sind lediglich beispielhaft und keineswegs beschränkend aufzufassen, da diese Werte von der konkreten Auslegung und Dimensionierung der Scherenhebebühne abhängen. Of course, the individual features of the invention are not limited to the described combinations of features in the context of the presented exemplary embodiments and can also be used in other combinations as a function of predetermined device parameters. The example values given for the component sizes, angles of attack, material stresses, etc. are to be considered as examples only and not restrictive, since these values depend on the concrete design and dimensioning of the scissor lift.

Claims

Ansprüche claims
1. Aufstellvorrichtung für Scherenhebebühnen, umfassend 1. installation device for scissor lifts, comprising
- zumindest zwei sich kreuzende Scherenholme (60, 70);  - at least two intersecting scissor bars (60, 70);
- einen Linearaktuator (10) zum Anheben der Scherenholme (60, 70);  - A linear actuator (10) for lifting the scissor struts (60, 70);
- ein Doppelhebelgelenk (20), das schwenkbar an einem Scherenholm (60) gelagert ist;  - A double lever joint (20) which is pivotally mounted on a scissor beam (60);
- wobei das Doppelhebelgelenk (20) die Hubbewegung des Linearaktuators (10) an mindestens einen Scherenholm (60) koppelt.  - Wherein the double lever joint (20) couples the lifting movement of the linear actuator (10) to at least one scissor stay (60).
2. Aufstellvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass ein erstes (21) und zweites (22) Hebelelement des Doppelhebelgelenks (20) um eine Achse (23) schwenkbar gelagert sind und ein ausfahrbarer Abschnitt (12) des Linearaktuators (10) mit dieser Achse (23) in Verbindung steht; und der Sche- renholm (60) an einer ersten Stelle (25) schwenkbar mit dem ersten Hebelelement (21) verbunden ist und an einer zweiten Stelle (27) schwenkbar mit dem zweiten Hebelelement (22) verbunden ist. 2. Installation according to claim 1, characterized in that a first (21) and second (22) lever element of the double lever joint (20) about an axis (23) are pivotally mounted and an extendable portion (12) of the linear actuator (10) with this Axis (23) is in communication; and the scissor beam (60) is pivotally connected to the first lever member (21) at a first location (25) and pivotally connected to the second lever member (22) at a second location (27).
3. Aufstellvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass ein Ausfahren des Linearaktuators (10) aus einer unteren Ruheposition in eine erste Ausfahrposition ein Aufstellen des zweiten (22) Hebelelements relativ zur Ausfahrrichtung des Linearaktuators (10) und relativ zur Längsachse des Scherenholms (60) erzeugt. 3. Setting-up device according to claim 1 or 2, characterized in that an extension of the linear actuator (10) from a lower rest position to a first extended position setting up of the second (22) lever member relative to the extension direction of the linear actuator (10) and relative to the longitudinal axis of the scissor beam (60) generated.
4. Aufstellvorrichtung nach zumindest einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Schwenkachse (23) in einem Langloch (24) des ersten Hebelelements (21) gelagert ist, wobei das Ausfahren des Linearaktuators (10) in die erste Ausfahrposition die Schwenkachse (23) entlang des Langlochs (24) verschiebt. 4. Setting-up device according to at least one of claims 1 to 3, characterized in that the pivot axis (23) in a slot (24) of the first lever member (21) is mounted, wherein the extension of the linear actuator (10) in the first extended position, the pivot axis (23) along the slot (24) shifts.
5. Aufstellvorrichtung nach zumindest einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das erste (21) und das zweite (22) Hebelelement jeweils 2 parallele angeordnete Hebelplatten (21a, 21b, 22a, 22b) umfassen, die jeweils über Gelenkbolzen schwenkbar und parallel angeordnet sind. 5. Setting-up device according to at least one of claims 1 to 4, characterized in that the first (21) and the second (22) lever element each second comprise parallel arranged lever plates (21a, 21b, 22a, 22b), which are each pivotally mounted and arranged in parallel via hinge pins.
6. Aufstellvorrichtung nach zumindest einem der Ansprüche 1 bis 5, dadurch ge- kennzeichnet, dass das zweite Hebelelement (22) in einem zweiten Endbereich6. Setting-up device according to at least one of claims 1 to 5, character- ized in that the second lever element (22) in a second end region
(25) beweglich auf einem Führungselement lösbar gelagert ist, wobei das Ausfahren des Linearaktuators (10) in die erste Ausfahrposition eine gegenläufige Bewegung des zweiten Endbereichs (25) des zweiten Hebelelements (22) erzeugt. (25) is movably mounted on a guide element releasably, wherein the extension of the linear actuator (10) in the first extended position generates an opposite movement of the second end portion (25) of the second lever element (22).
7. Aufstellvorrichtung nach Anspruch 6, wobei das Führungselement eine am 7. Setting-up device according to claim 6, wherein the guide element is an am
Scherenholm (70) befestigte Führungsplatte (40) ist, und das zweite Hebelelement (22) über ein am zweiten Endbereich (25) gelenkig angebrachtes Schubelement (30) auf der Führungsplatte (40) gleitend gelagert ist.  Scissor beam (70) fixed guide plate (40), and the second lever member (22) via a at the second end portion (25) hingedly mounted pusher member (30) on the guide plate (40) is slidably mounted.
8. Aufstellvorrichtung nach Anspruch 7, wobei jeweils ein Schubelement (30) am zweiten Endbereich (25) an den Hebelplatten (22a, 22b) schwenkbar angebracht ist, und wobei die Führungsplatte (40) eine mittige Aussparung (41) aufweist zur Aufnahme des zweiten Endbereichs (29) des zweiten Hebelele- ments (22) während des Ausfahrens des Linearaktuators (10) in die erste Ausfahrposition. 8. An installation device according to claim 7, wherein in each case a thrust element (30) on the second end portion (25) on the lever plates (22 a, 22 b) is pivotally mounted, and wherein the guide plate (40) has a central recess (41) for receiving the second End region (29) of the second lever element (22) during extension of the linear actuator (10) in the first extended position.
9. Aufstellvorrichtung nach Anspruch 7, wobei ein Schubelement (30) am zweiten Endbereich (25) zwischen den Hebelplatten (22a, 22b) schwenkbar befestigt ist und wobei die Führungsplatte (40) eine mittige Aussparung (41) aufweist zur Aufnahme des Schubelement (30) während des Ausfahrens des Linearaktuators (10) in die erste Ausfahrposition. The erector of claim 7, wherein a pusher member (30) is pivotally secured to the second end portion (25) between the lever plates (22a, 22b) and wherein the guide plate (40) has a central recess (41) for receiving the pusher member (30) ) during extension of the linear actuator (10) to the first extended position.
10. Aufstellvorrichtung nach zumindest einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass das die Hebelplatten (21a, 21b, 22a, 22b) in der Draufsicht die Form eines länglichen Rechtecks mit stark abgerundeten Endbereichen aufweisen mit Aussparungen entlang der Längsachse zur Aufnahme je eines Schwenkbolzens. 10. Setting-up device according to at least one of claims 1 to 9, characterized in that the lever plates (21a, 21b, 22a, 22b) in plan view have the shape of an elongated rectangle with strongly rounded end portions with recesses along the longitudinal axis for receiving one each pivot pin.
11. Scherenhebebühne, dadurch gekennzeichnet, dass die Scherenhebebühne mindestens eine Aufstell Vorrichtung nach einem der Ansprüche 1- 10 enthält, wobei die Scherenhebebühne zwei Paare sich kreuzender Scherenholme um- fasst. 11. scissor lift, characterized in that the scissor lift comprises at least one erection device according to one of claims 1- 10, wherein the scissor lift comprises two pairs of crossing scissor beams.
EP11700812.8A 2010-02-09 2011-01-21 Raising device for scissor lifts Not-in-force EP2534086B1 (en)

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US20130239405A1 (en) * 2012-03-16 2013-09-19 Trevor C. Griffith Track remover / assembler
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US9096415B2 (en) 2015-08-04
PL2534086T3 (en) 2016-12-30
EP2534086B1 (en) 2016-06-08
KR20120126091A (en) 2012-11-20
ES2588765T3 (en) 2016-11-04
JP2013518789A (en) 2013-05-23
DE102010001727A1 (en) 2011-08-11
WO2011098209A1 (en) 2011-08-18
US20130037765A1 (en) 2013-02-14
DK2534086T3 (en) 2016-09-12

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