EP2243742B1 - Plate-forme de levage à ciseaux - Google Patents

Plate-forme de levage à ciseaux Download PDF

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Publication number
EP2243742B1
EP2243742B1 EP10160550A EP10160550A EP2243742B1 EP 2243742 B1 EP2243742 B1 EP 2243742B1 EP 10160550 A EP10160550 A EP 10160550A EP 10160550 A EP10160550 A EP 10160550A EP 2243742 B1 EP2243742 B1 EP 2243742B1
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EP
European Patent Office
Prior art keywords
scissor
lifting
operating rod
lifting platform
expansion lever
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP10160550A
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German (de)
English (en)
Other versions
EP2243742A1 (fr
Inventor
Winfried Schmitt
Thomas Deuring
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
Priority to PL10160550T priority Critical patent/PL2243742T3/pl
Publication of EP2243742A1 publication Critical patent/EP2243742A1/fr
Application granted granted Critical
Publication of EP2243742B1 publication Critical patent/EP2243742B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/08—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement hydraulically or pneumatically operated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/065—Scissor linkages, i.e. X-configuration
    • B66F7/0666—Multiple scissor linkages vertically arranged

Definitions

  • the present invention relates to a scissor lift, in particular for the lifting of motor vehicles, which requires a reduced force for lifting in the initial phase of the lifting movement.
  • 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 26 20 902 A1 shows a lifting device with a working platform, the lifting mechanism is designed in the manner of a double scissors.
  • the lifting mechanism In the retracted position of the platform lift at the beginning of the movement auxiliary cylinders, which are respectively arranged at the corners of the platform, this to a certain height.
  • the thrust of the master cylinder acts on the spars of the frame and raises these in the following.
  • the use of additional auxiliary cylinder increases the cost of the lifting device and prevents a compact design of the platform.
  • the FR 2 673 926 A1 discloses a raising mechanism for a scissor lift for lifting and vertical force reinforcement by means of a hinged expansion lever.
  • a scissor lift in particular for motor vehicles, which can have at least two intersecting lower scissor struts, at least two intersecting upper scissor struts, which are articulated to the lower scissor struts.
  • the scissor lift may have a lower joint interconnecting the two lower scissor struts, an upper hinge interconnecting the two upper scissor struts, and at least one lifting unit in communication with the lower scissor strut or the upper scissor handle.
  • at least one running rail which has at least one footprint and is supported on the upper scissor struts, can be provided.
  • the upper scissor beam may be hingedly connected to the at least one running rail and the other of the upper scissor struts may be connected to the at least one running rail be guided longitudinally displaceable during a movement of the scissors lift.
  • the lifting unit may comprise at least one actuating rod which can cooperate with a raising mechanism for raising and vertical force reinforcement up to a predetermined lifting height of the scissor lift.
  • the (first) predetermined lifting height results as the lifting height at which a spreading lever of the erection mechanism is in contact with the other components of the erection mechanism, in particular the Sp Schwarzhebelage and the stop.
  • the erection mechanism may be during the lifting of the scissors lift cooperate with the scissor beams so that an increased vertical force component can be provided even at a low lifting height, whereby the lifting unit and the components associated therewith can be made smaller. As a result, the necessary component costs can be reduced with the same load.
  • This inventive structure of the scissor lift has the advantage that a very compact structure of the same can be realized, since the height of the scissor lift in the lowered position is essentially determined only by the dimensioning of the support beams, and the lifting unit.
  • the erection mechanism may comprise at least one expansion lever which is pivotally connected to a head of the actuating rod.
  • the expansion lever due to its interaction with the other components of the erection mechanism when lifting the scissor lift with the operating rod assume different angles, so that an increased vertical force component can be provided even at a low lifting height.
  • the expansion lever may have at least one rotatable roller at one longitudinal end.
  • a rotatable roller serves primarily to reduce the friction while the expansion lever moves towards a stop on a Sp Drhebelage.
  • a substantially arbitrarily shaped body may be provided, which however should have low friction during its movement, for example this may be a sliding element (or a sliding shell).
  • the spreader in a scissor lift on the scissors spar, with which the actuating rod is not in communication, a Sp lanternhebelage be provided, the spreader can be in contact with the Sp Dahlhebelage up to a predetermined second lifting height of the scissor struts.
  • the second predetermined lift height results as the lift height at which the contact the expansion lever with the Sp Dahlhebelage and the stop no longer exists.
  • the spreading lever is a removable support.
  • the stop may extend substantially perpendicular to the Sp Dr Drhebelage, but the stop may also be outwardly, ie facing away from the Hubaggregat inclined. Thus, the force for releasing the roller from the stop can be reduced.
  • the height of the stop may be selected such that it corresponds at least to the radius of the roller.
  • the Sp Dahlhebelage may have a stop, wherein the expansion lever can exert a reinforcing vertical force component on the actuating rod and thus on the associated with the lifting unit scissor spar at a terminal contact with the Sp Schwarzhebel analysis and the stop.
  • the size of the reinforcing vertical force component of the expansion lever can be additionally influenced by the choice of the force introduction point from the actuating rod into the scissor stay.
  • the erection mechanism can have a lifting aid element which can be arranged on the head of the actuating rod on the opposite side of the expansion lever.
  • the lifting aid may be a roller.
  • the lifting aid element can be a sliding element of essentially any design, the friction of which should be as low as possible.
  • the lifting aid may contact the lowered position with a ramp portion extending upwardly from the spreader bar and connected to the scissors spar.
  • a contact means may be provided, which cooperates with a guide which is arranged on the scissor beam, which is in communication with the actuating rod, and allow a power transmission between the actuating rod and the scissor beam.
  • the contact means may be a sliding block, which transmits a force application of the actuating rod via the guide to the scissor arm, which is in communication with the actuating rod, and moves relative to the guide during an extension movement of the actuating rod.
  • the sliding block can be made from a gunmetal.
  • the sliding block can interact with the guide in such a way that it is in contact with the guide at any desired lifting height.
  • the scissor lift may have the guide in the region of an inwardly directed longitudinal end of a substantially hook-shaped region which limits the movement of the contact means in one direction.
  • the actuating rod in the lowered position may be arranged substantially horizontally.
  • the horizontal arrangement of the actuating rod allows a very compact construction of the scissors lift in the lowered position. If the scissor lift is mounted in a built-in pit, the depth of the pit can be reduced.
  • a stop plate may be arranged in a scissors lift in a region of the scissor beam, which is in communication with the actuating rod.
  • the stop plate may be arranged in the upper region of the scissor strut.
  • the stop plate can also be arranged in any area along the height of the scissor beam.
  • the stopper plate in the region of an inwardly directed longitudinal end have a Begrenzungsaussparung, which accommodates a limiting means which is arranged in the head of the actuating rod, and can prevent inward displacement of the head above a third predetermined lifting height.
  • the third predetermined lifting height results as the lifting height at which the limiting means is in contact with the limiting recess.
  • the lifting unit may be a hydraulic lifting cylinder and the actuating rod may be a piston rod of the hydraulic lifting cylinder.
  • the actuating rod via the contact means and the guide with the upper scissor struts are in operative connection. Furthermore, however, the actuating rod can also be in operative connection with the lower scissor struts via the contact means and the guide.
  • the extension mechanism may comprise at least one extension element, which may be received in each case by a correspondingly shaped receiving area in the running rail. Furthermore, the extension mechanism have at least one Auffahrelement which is rotatably connected to the at least one extension element. The at least one extension element can be guided displaceably in the axial direction in the receiving region of the running rail. The width of the Auffahrelements may be identical to the width of the running rail, but may also be different. Furthermore, the extension mechanism may have on the at least one extension element or on the receiving region of the running rail a stop which is provided for limiting the axial displacement of the at least one extension element away from the running rail.
  • the extension mechanism can have a support element which can be brought into contact both with the drive-on element and with at least one area of the at least one extension element. Furthermore, the support element with the aid of a lever relative to the drive element can be moved. Furthermore, a correspondingly shaped receiving region for being in contact with the support element may be formed on the extension element.
  • the Ausfahrmechanismus can thus realize both a running rail, in which the footprint has a variable length, as well as a pivotable ramp for the startup / shutdown of the vehicle on the running rail.
  • FIG. 1 and Fig. 2 schematically illustrated a scissor lift 1 according to the present invention.
  • double scissor lift is used for lifting lighter motor vehicles (not shown), especially passenger cars, off-road vehicles, vans, etc.
  • the second half of this lift is designed to be identical and arranged in a horizontal intermediate distance, which corresponds approximately to the track width of the motor vehicle to be lifted.
  • the form in Fig. 2 left and right half together the double scissor lift 1 for raising and lowering a motor vehicle.
  • the Fig. 2 illustrated left half of the double scissors lift 1 has the same components as the right half, which are marked with the same - provided with an index line - reference numerals.
  • the double scissors lift 1 has two support rail constructions, of which in Fig. 1 only one is visible and the second is hidden, since it is located behind it.
  • the support rail construction includes two parallel longitudinal rails 10, 10 ', each having an inwardly open cross-section and connected to a bottom-side flat iron.
  • the two longitudinal rails 10 are fixedly connected to each other by an approximately plate-shaped cross member, on the end of each two bearing blocks (not shown) are attached.
  • a horizontal pivot pin (not shown) is mounted with its ends to the center of a ball joint for the articulated support of a lifting cylinder 90, 90 'is fixed.
  • a horizontal pivot pin (not shown) is mounted with its ends to the center of a ball joint for the articulated support of a lifting cylinder 90, 90 'is fixed.
  • a horizontal pivot pin (not shown) is mounted with its ends to the center of a ball joint for the articulated support of a lifting cylinder 90, 90 'is fixed.
  • a horizontal pivot pin (not shown) is mounted with its ends to the center of a ball joint for the articulated support of a lifting cylinder 90, 90 'is fixed.
  • a horizontal pivot pin
  • each of the lateral support or guide rails 10, 10 ' is a respective locking or locking mechanism (not shown) is provided, which is pivotally connected to the lower tapered ends of each of a lower support beam 21, 21', 22, 22 '.
  • a respective locking or locking mechanism (not shown) is provided, which is pivotally connected to the lower tapered ends of each of a lower support beam 21, 21', 22, 22 '.
  • the two lower support beams 21 and 22 and the two support beams 21 'and 22' are pivotally connected to each other by central bearing pins 40, 40 '.
  • the head 101, 101 'of the piston rod 100, 100' of the lifting cylinder 90, 90 ' engages an upper scissors mechanism 30, 30', so that the lower scissor stringer 20, 20 'and the upper scissor stringer 30, 30' are mechanically coupled.
  • the lifting cylinder 90, 90 ' is pressurized with pressurized fluid and thereby extends its piston rod 100, 100', the two scissor beams 20, 20 ', 30, 30' are spread apart. From a predetermined first lifting height supports a deployment mechanism 110, 110 ', the spreading of the two scissor struts 20, 20', 30, 30 ', which will be described below in more detail.
  • For the lifting cylinder 90, 90 'usually two juxtaposed pressure cylinder are used to avoid an uneven distribution of the load on the platform excessive stress on the punch guide in the lifting cylinder 90, 90'.
  • the upper scissor stringer 30, 30' are each formed by upper support struts 31, 32, 31 ', 32', which with their lower tapered ends each having an upper region of the associated lower support strut 21 , 21 ', 22, 22' are articulated by bearing pins 25, 25 '.
  • the two upper support beams 31 and 32 and the two upper support beams 31 'and 32' are each connected by hinge pins 50, 50 'hinged together.
  • a support rail 70, 70' is supported, which has on its upper side a footprint 80, 80 '.
  • a ramp 130 is articulated.
  • the running rail 70, 70 ' has, in addition to the flat contact surface 80, 80', two vertically angled side walls 81, 81 ', as well as on the opposite side 82, 82' thereof.
  • the length of the running rail 80, 80 ' can be adjusted by means of an extension mechanism 140 depending on the wheelbase of the motor vehicle to be examined. Further comments on the operation of the extension mechanism 140 can be found in relation to the Fig. 16-21 ,
  • a vehicle to be lifted can drive with its wheels over the ramps 120, 120 'or 130, 130' onto the lowered rails 70, 70 '. Subsequently, the vehicle is parked and the double scissor lift 1 is raised in a raised position by controlled pressure medium supply to the lifting cylinders 90, 90 '. In the predetermined extended position or at the desired lifting height, as for example.
  • Fig. 1 is shown, the lower scissors mechanisms 20, 20 'in the floor area and the upper scissor mechanism 30, 30' on the rails 70, 70 'via a locking mechanism (not shown) locked so that the scissor beams 20, 20', 30, 30 'and thus the entire double scissors lift 1 are securely fixed in the desired position.
  • control panel 200 has for this purpose a plurality of control elements (not shown), by means of which, for example, the raising and lowering of the rails 70, 70 'can be initiated or stopped.
  • the double-scissors lift 1 is in the lowered position, which is provided for the driving of a motor vehicle.
  • the lifting height is 100 mm, although the lifting cylinder 90 in the retracted position and the two scissor beams 20, 30 are arranged in a plane.
  • the lifting height results from the distance from the ground level to the top of the running rail 70th
  • the sectional view from the side according to Fig. 3 shows the head 101 of the piston rod 100, which has a rectangular shape in the connection region with the piston rod 100, wherein the width of which is smaller than the diameter of the lifting cylinder 90.
  • the head 101 has a rounded design at its free end.
  • the head 101 has a bore (not shown) for receiving a bolt 173, wherein the bolt 173 extends in the transverse direction to the longitudinal axis of the piston rod 100 of the lifting cylinder 90.
  • the length of the bolt 173 extends over the entire distance between the insides of two adjacently disposed upper scissor struts 30.
  • a spreading lever 150 is rotationally connected, wherein the pin 173 received in the region of a longitudinal end of the expansion lever 150 becomes.
  • the expansion lever 150 is disposed transversely to the piston rod 100 immediately adjacent to the head 101, on the side of the head 101 facing away from the upper scissor spar 30.
  • the expansion lever 150 consists of a plate-shaped central region 174, as well as of a respective longitudinal strut 172, which are formed in the outer region of the expansion lever 150.
  • the longitudinal struts 172 have a taper in a direction away from the bolt 173 direction.
  • the thicknesses of the longitudinal struts 172 are each smaller than the width of the head 101.
  • a substantially cylindrically shaped region 178 is formed for receiving and supporting two rollers 170.
  • the roller 170 is rotatably mounted on the cylindrical portion 178, wherein the rollers 170 are each disposed in the outer region of the cylindrical portion 178.
  • the rollers 170 are each arranged symmetrically to the longitudinal direction of the plate-shaped central portion 174.
  • the expansion lever 150 is thus a symmetrical component.
  • the rollers 170 are in contact with a Sp Drhebelage 190, which is arranged in the region of the underside of the upper support beam 32.
  • the expansion lever receptacle 190 has a substantially plate-shaped configuration which extends over the entire width between the adjacent upper support bars 32 of the upper scissor struts 30.
  • a stop 180 is formed, which extends perpendicular to the top of the Sp Drhebelage 190 away from this, to a height which is greater than the radius of the roller 170 extends.
  • the stop 180 also extends across the entire width between the adjacent upper support bars 32 of the upper scissor struts 30th
  • a guide 184 is arranged, which via a sliding block 183 (not shown) forces for raising or lowering the double scissor lift 1 from the head 101 of the lifting cylinder 90 in the upper scissor stay 30 and the mechanical connection with the lower scissor beam 20 also initiates in this.
  • a Anhebeaselement is arranged in the form of a starting roller 175.
  • a functional strut 176 is formed which forms a ramp region 171 in the region of that longitudinal end which points in the direction of the head 101.
  • the ramp region 171 has a convex configuration, which merges into a concave configuration in the middle region of the functional strut 176.
  • the height of the functional strut 176 is greater than the height of the upper support beam 32nd
  • Fig. 5 and 6 show the erection mechanism 110 for the double scissor lift 1 according to Fig. 1 at a lifting height of 300 mm.
  • the lifting of the double scissor lift 1 from the lowered position takes place in different phases, in each of which different components contribute the main contribution to the introduction of the vertical force component.
  • the first phase of the lifting is described, ie the phase in which the lifting height is between 100 mm (lowered position) to about 300 mm.
  • the position of the expansion lever 150 and the head 101 according to Fig. 5 and 6 at the lifting height 300 mm shows the contact of the rollers 170 with both the stopper 180 and with the Sp Drhebelage 190.
  • the expansion lever 150 is pressed under the action of the piston rod 100 against the two components 180, 190 below, creating a storage situation with a translational fixation of the rollers 170 is formed, which, however, allows pivoting of the expansion lever 150 about the axis of rotation of the rollers 170.
  • the contact between the starting roller 175 and the ramp portion 171 is no longer present at this lifting height, ie in the subsequent second phase of the lifting, the starting rollers 175 and the ramp portion 171 are no longer involved in providing the vertical force component.
  • the expansion lever 150 remains in constant contact with the stop 180 and the expansion lever receptacle 190 via the rollers 170 and retains the storage situation described above.
  • the obtuse angle formed between the longitudinal axis of the piston rod 100 and the longitudinal axis of the expansion lever 150 is reduced. This results due to the lever situation at the force introduction point of the lifting cylinder 90 on the upper scissor beam 30, i. between the sliding block 183 and the guide 184, in conjunction with the increasing vertical force component resulting from the increasing angle between the piston rod 100 and the horizontal, an additional vertical force gain under the influence of the expansion lever 150 in this phase.
  • Fig. 7 and 8th show the expansion lever 150 in the position towards the end of the second phase, in which the contact situation between the rollers 170 and the stopper 180 and the Sp Schwarzhebelage 190 still exists, the support effect is already reduced.
  • Fig. 9 and 10 show the double-scissors lift 1 in a third phase, in which the lifting height is about 1900 mm and the maximum lifting height of the rail 70 is substantially reached.
  • the area of the rollers 170 of the expansion lever 150 is located above a stop plate 160 which connects opposite upper scissor struts 30 with each other.
  • the stopper plate 160 has a recess 163 which is so is configured that a region of the expansion lever 150 can move through the recess 163 therethrough.
  • the head 101 of the piston rod 100 and a lifting pin 177 which is formed on the underside of the expansion lever 150, move towards each other.
  • the lifting pin 177 and the head 101 are in contact with each other, during the further extension of the piston rod 100 the head 101 carries along the lifting pin 177, whereby the spreading lever 150 is released from the contact position of the second phase with the stop 180 and the spreading lever receptacle 190.
  • the height of the stop 180 is selected so that on the one hand, a secure storage of the rollers 170 is achieved during the second phase, on the other hand, the cancellation of this storage situation after the end of the second phase, which is triggered by the influence of the head 101 and the lift pin 177 , but is achieved safely and without large process forces.
  • Fig. 9 and 10 the contact of a limiting screw 162, which is mounted on the head 101 and which projects from the surface of the head 101, with a limiting recess 161, which is formed in the form of a slot in the stop plate 160.
  • the limiting recess 161 is formed in the stop plate 160 in the region of an inwardly directed longitudinal end, ie in the direction of the head 101.
  • the limiting recess 161 receives in the third phase the limiting screw 162, while preventing inward displacement of the head 101, ie, away from the abutment portion 186 toward the opposite hook portion 182.
  • Fig. 11-13 is a double scissors lift 1 according to the invention Fig. 1 presented in the third phase.
  • the Fig. 12 shows an enlarged sectional view from the side of the area w according to Fig. 11 ,
  • Fig. 13 shows a sectional view along the section line AA according to Fig. 11 ,
  • the bolt 173 has different areas, each with a different diameter, for connection with the components described above, the diameter decreasing from the center to the longitudinal ends.
  • Fig. 13 again illustrates the symmetrical structure of the expansion lever 150, and the double scissors mechanism 20, 30th
  • FIGS. 14 and 15 show the double scissor lift 1 according to the invention in a partial sectional view from the side in the lowered state.
  • the operation of the erection mechanism 110 will be described at this point.
  • the effect of the erection mechanism can be divided into three phases that occur during the lifting of the double scissor lift 1 in the order described.
  • the piston rod 100 In the first phase, the piston rod 100 is in the retracted state and is in a substantially horizontal orientation.
  • the starting roller 175 mounted on the head 101 via the bolt 173 is moved along the ramp area 171.
  • the guide 184 With the extension of the piston rod 100 whose movement is transmitted via the head 101 and connected to the head 101 bolt 173 on the sliding block 183, wherein the sliding block 183 cooperates with the guide 184.
  • the guide 184 transmits the force components introduced by the sliding block 183 to the upper scissor struts 30.
  • the ground-facing design of the ramp portion 171 increases the distance between the ground level and the underside of the launching rollers 175 in the first phase.
  • the second phase begins as soon as an end region of the expansion lever 150 (in this case the roller 170) is in contact both with the stop 180 and with the expansion lever receptacle 190.
  • the expansion lever 150 is under the action of the piston rod 100 against the two components 180 , 190 pressed, creating a storage situation of the rollers 170 with the stop 180 and the Sp Schwarzhebelage 190 with a translational fixation of the rollers 170 is formed, however, allows pivoting of the expansion lever 150 about the axis of rotation of the rollers 170.
  • the expansion lever 150 remains in constant contact with the stop 180 and the expansion lever receptacle 190 via the rollers 170 and retains the storage situation described above.
  • the contact between the starting roller 175 and the ramp portion 171 is no longer present in the second phase, i. the launch roller 175 and the ramp portion 171 are no longer involved in providing the vertical force component.
  • the obtuse angle formed between the longitudinal axis of the piston rod 100 and the longitudinal axis of the expansion lever 150 is reduced.
  • the sliding block 183 continues to move with respect to the guide 184 under the influence of the movement of the piston rod 100 and introduces a vertical force component in the scissor struts 20, 30 via the guide 184 as described above.
  • the lifting pin 177 and the head 101 are in contact with each other, whereby the expansion lever 150 from the contact situation of the second phase, namely its contact with the stopper 180 and the Sp Dahlhebelage 190, solved by an interaction of the expansion lever 150 with the lifting pin 177 becomes.
  • the height of the stop 180 is chosen so that on the one hand a secure storage of the rollers 170 is achieved during the second phase, on the other hand, the cancellation of this storage situation after the end of the second phase, safely and without large process forces is achieved.
  • the limiting screw 162 is in contact with the slot 161, whereby an uncontrolled displacement of the head 101 in the direction of the region 182 on the guide 184 is prevented.
  • the vertical force for further lifting the double scissor lift 1 is completely provided by the lifting cylinder 90 in the third phase and introduced via the sliding block 183 and the guide 184 in the upper scissor stay 30 as described above.
  • the Fig. 16-21 show a running rail 70 with an extension mechanism 140, whereby the axial length of the running rail 70 can be changed to lift vehicles with different wheelbase on a double scissor lift 1.
  • the extension mechanism 140 comprises a first extension element 201 and a second extension element 202, which are each received by a correspondingly shaped receiving region 240, 250 in the running rail 70.
  • the extension elements 201, 202 are profiled bars which are displaceably guided in the axial direction in the associated receiving area 240, 250.
  • a Auffahrplatte 200 is arranged, which is rotatably connected to the extension elements 201, 202, wherein, for example, for the drive of the vehicle, an inclined position of the Auffahrplatte 200 according to Fig. 20 and when raising or lowering a position according to Fig. 19 can be taken.
  • the extension mechanism 140 a stop (not shown), which serves to limit the axial displacement of the extension members 201, 202 away from the running rail 70, is used.
  • the Auffahrplatte 200 is rotatably connected to a lateral, bent region via a respective bolt 220 with the extension elements 201, 202, wherein a locking ring prevents loosening of the bolt 220.
  • a connecting region 210 is formed which has a substantially triangular configuration.
  • a locking recess 217 is formed on its surface, which serves to receive a locking element 204.
  • the locking element 204 is a cuboid body whose width substantially corresponds to the width of the running rail 70.
  • the locking element 204 is brought into connection both with the locking recess 217 and with an L-shaped element receptacle 207, which accommodates a region of the locking element 204 in the area under the ramp plate 200, whereby the locking element 204 supports the ramp plate 200 against the locking recess 217.
  • the locking element 204 is connected at its longitudinal ends with a lever 215.

Claims (14)

  1. Plateforme élévatrice à ciseaux, en particulier pour véhicules automobiles, comportant :
    - au moins deux bras de ciseau inférieurs (20, 20') qui se croisent,
    - au moins deux bras de ciseau supérieurs (30, 30') qui se croisent et qui sont reliés en articulation aux bras de ciseau inférieurs (20, 20'),
    - une articulation inférieure (40, 40') reliant les deux bras de ciseau inférieurs (20, 20') l'un à l'autre,
    - une articulation supérieure (50, 50') reliant les deux bras de ciseau supérieurs (30, 30') l'un à l'autre,
    - au moins un dispositif élévateur (60, 60') qui est en liaison avec le bras de ciseau inférieur (20, 20') ou avec le bras de ciseau supérieur (30, 30'),
    - au moins un rail de roulement (70, 70') qui comprend au moins une surface d'appui (80, 80') et qui prend appui sur les bras de ciseau supérieurs (30, 30'),
    - le bras de ciseau supérieur (30, 30') étant relié en articulation audit au moins un rail de roulement (70, 70') et l'autre des bras de ciseau supérieurs (30, 30') pourvu dudit au moins un rail de roulement (70, 70') étant guidé en translation longitudinale lors d'un mouvement de la plateforme élévatrice à ciseaux (1),
    - le dispositif élévateur (60, 60') comprenant au moins une tige d'actionnement (100, 100') qui coopère avec un mécanisme de levage (110, 150, 170, 171, 175, 180, 190, 110', 150', 170', 171', 175', 180', 190') pour le levage et pour l'amplification de la force verticale jusqu'à une hauteur de levage prédéterminée de la plateforme élévatrice à ciseaux (1),
    caractérisé en ce qu'il est prévu un logement (190, 190') de levier écarteur sur le bras de ciseau (20, 20', 30, 30') auquel la tige d'actionnement (100, 100') n'est pas reliée, un levier écarteur (150, 150') étant en contact avec le logement (190, 190') de levier écarteur jusqu'à une seconde hauteur de levage prédéterminée des bras de ciseau (20, 20', 30, 30').
  2. Plateforme élévatrice à ciseaux selon la revendication 1, caractérisée en ce que le levier écarteur (150, 150') est relié en articulation à une tête (101, 101') de la tige d'actionnement (100, 100').
  3. Plateforme élévatrice à ciseaux selon la revendication 1 ou 2, caractérisée en ce que le levier écarteur (150, 150') présente, à une extrémité longitudinale, au moins un rouleau tournant (170, 170').
  4. Plateforme élévatrice à ciseaux selon l'une au moins des revendications 1 à 3, caractérisée en ce que le logement (190, 190') de levier écarteur comprend une butée (180, 180'), et lors d'un contact du côté extrémité avec le logement (190, 190') de levier écarteur et la butée (180, 180'), le levier écarteur (150, 150') exerce une composante de force verticale amplificatrice sur la tige d'actionnement (100, 100') et donc sur le bras de ciseau (30, 30') qui est en liaison avec le dispositif élévateur (60, 60')
  5. Plateforme élévatrice à ciseaux selon l'une au moins des revendications 1 à 3, caractérisée en ce que le mécanisme de levage (110, 150, 170, 171, 175, 180, 190, 110', 150', 170', 171', 175', 180', 190') comprend un élément auxiliaire de levage (175, 175') qui est agencé sur la tête (101, 101') de la tige d'actionnement (100, 100') sur le côté opposé du levier écarteur (150, 150').
  6. Plateforme élévatrice à ciseaux selon l'une au moins des revendications 1 à 5, caractérisée en ce que pendant le déploiement de la tige d'actionnement (100, 100') à partir de la position abaissée, l'élément auxiliaire de levage (175, 175') est en contact avec une zone formant rampe (171, 171') qui s'étend vers le haut à partir du logement (190, 190') de levier écarteur et qui est reliée au bras de ciseau (30, 30').
  7. Plateforme élévatrice à ciseaux selon l'une au moins des revendications 1 à 6, caractérisée en ce que sur la tête (101, 101') de la tige d'actionnement (100, 100') est prévu un moyen de mise en contact (183, 183') coopérant avec un guidage (184, 184', 185, 185') qui est agencé sur le bras de ciseau (20, 20', 30, 30') qui est en liaison avec la tige d'actionnement (100, 100'), et qui permet la transmission d'une force entre la tige d'actionnement (100, 100') et le bras de ciseau (30, 30').
  8. Plateforme élévatrice à ciseaux selon l'une au moins des revendications 1 à 7, caractérisée en ce que le moyen de mise en contact (183, 183') est un coulisseau qui transmet une force appliquée de la tige d'actionnement (100, 100') au bras de ciseau (20, 20', 30, 30'), en liaison avec la tige d'actionnement (100, 100'), via le guidage (184, 184') et qui se déplace par rapport au guidage (184, 184') lors d'un mouvement de déploiement de la tige d'actionnement (100, 100').
  9. Plateforme élévatrice à ciseaux selon l'une au moins des revendications 1 à 8, caractérisée en ce qu'au niveau d'une extrémité longitudinale dirigée vers l'intérieur, le guidage (184, 184') comprend une zone (182, 182') en forme de crochet qui délimite le mouvement du moyen de mise en contact (183, 183') dans une direction.
  10. Plateforme élévatrice à ciseaux selon l'une au moins des revendications 1 à 9, caractérisée en ce que la tige d'actionnement (100, 100') est agencée sensiblement horizontalement, dans la position abaissée.
  11. Plateforme élévatrice à ciseaux selon l'une au moins des revendications 1 à 10, caractérisée en ce qu'il est prévu une plaque formant butée (160, 160') dans une zone du bras de ciseau (20, 20', 30, 30') qui est en liaison avec la tige d'actionnement (100, 100')
  12. Plateforme élévatrice à ciseaux selon l'une au moins des revendications 1 à 11, caractérisée en ce qu'au niveau d'une extrémité longitudinale dirigée vers l'intérieur, la plaque formant butée (160, 160') présente une échancrure de délimitation (161, 161') qui reçoit un moyen de délimitation (162, 162') qui est agencé dans la tête (101, 101') de la tige d'actionnement (100, 100') et qui empêche une translation de la tête (101, 101') vers l'intérieur au-dessus d'une troisième hauteur de levage prédéterminée.
  13. Plateforme élévatrice à ciseaux selon l'une au moins des revendications 1 à 12, caractérisée en ce que le dispositif élévateur (60, 60') est un vérin hydraulique de levage (90, 90'), et la tige d'actionnement (100, 100') est une tige de piston du vérin hydraulique de levage (90, 90').
  14. Plateforme élévatrice à ciseaux selon l'une au moins des revendications 1 à 13, caractérisée en ce que la tige d'actionnement (100, 100') est en liaison active avec les bras de ciseau supérieurs (30, 30') via le moyen de mise en contact (183, 183') et le guidage (184, 184').
EP10160550A 2009-04-23 2010-04-21 Plate-forme de levage à ciseaux Not-in-force EP2243742B1 (fr)

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PL10160550T PL2243742T3 (pl) 2009-04-23 2010-04-21 Podnośnik nożycowy

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DE102009002613A DE102009002613A1 (de) 2009-04-23 2009-04-23 Scherenhebebühne

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EP2243742A1 EP2243742A1 (fr) 2010-10-27
EP2243742B1 true EP2243742B1 (fr) 2012-08-29

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US (1) US8672297B2 (fr)
EP (1) EP2243742B1 (fr)
DE (1) DE102009002613A1 (fr)
ES (1) ES2390928T3 (fr)
PL (1) PL2243742T3 (fr)

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US9457998B1 (en) 2013-03-14 2016-10-04 Kevin Easterly Devices for locking a spring assembly and related uses thereof
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CN103879850B (zh) * 2014-04-16 2016-08-17 中国矿业大学 一种承罐稳罐装置实验台

Also Published As

Publication number Publication date
EP2243742A1 (fr) 2010-10-27
DE102009002613A1 (de) 2010-11-25
US8672297B2 (en) 2014-03-18
PL2243742T3 (pl) 2013-01-31
US20100270523A1 (en) 2010-10-28
ES2390928T3 (es) 2012-11-19

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