EP2878571B1 - Dispositif de levage destiné à soulever de lourdes charges - Google Patents

Dispositif de levage destiné à soulever de lourdes charges Download PDF

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Publication number
EP2878571B1
EP2878571B1 EP14190252.8A EP14190252A EP2878571B1 EP 2878571 B1 EP2878571 B1 EP 2878571B1 EP 14190252 A EP14190252 A EP 14190252A EP 2878571 B1 EP2878571 B1 EP 2878571B1
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EP
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Prior art keywords
units
cylinder
piston
lifting
hydraulic
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EP14190252.8A
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German (de)
English (en)
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EP2878571A1 (fr
Inventor
Hans Nussbaum
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Otto Nussbaum GmbH and Co KG
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Otto Nussbaum GmbH and Co KG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/46—Combinations of several jacks with means for interrelating lifting or lowering movements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/10—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks
    • B66F7/16—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by one or more hydraulic or pneumatic jacks
    • B66F7/20—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by one or more hydraulic or pneumatic jacks by several jacks with means for maintaining the platforms horizontal during movement
    • 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
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure 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
    • B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions

Definitions

  • the invention relates to a lifting device for lifting heavy loads, in particular a lifting platform, with a plurality of paired cylinder-piston units each having a hydraulic fluid and a hydraulic fluid drain, wherein each unit pair comprises a operated as a command unit, connected to a pressure port of at least one hydraulic pump cylinder-piston unit , And the respective other cylinder-piston unit is operated as a following unit by the hydraulic fluid inlet is connected to the hydraulic fluid drain of one of the operated as a command aggregate cylinder-piston units.
  • a generic lifting device in the form of a scissor lift is from the document DE 29916254U1 known. It has two scissor racks which are each actuated by a pair of aggregates. Each cylinder-piston unit of each unit pair serves as a command unit and is hydraulically coupled to the second, acting as a follower cylinder-piston unit of the other aggregate pair.
  • This has the advantage that there are two separate circuits, so that in case of leakage or breakage of a hydraulic lines, the lift does not decrease, since the aggregates of the second, not affected by the defect hydraulic circuit take over the holding function of the failed units for both scissor racks.
  • a command / follower or master / slave arrangement can be used.
  • double-acting hydraulic cylinders with a hydraulic fluid inlet and a hydraulic fluid outlet are used.
  • a first hydraulic cylinder serves as a command cylinder
  • the hydraulic fluid drain is connected to the hydraulic fluid inlet of a second, operating as a slave cylinder hydraulic cylinder.
  • Command and follower cylinders thus form a closed hydraulic circuit, so that their stroke paths are forcibly synchronized.
  • each aggregate pair has a cylinder piston unit operated as a command unit. All command units are fed separately by a hydraulic pump.
  • the aggregate pairs are connected to form a ring circuit in that the respective hydraulic fluid outflow of a command unit is connected to the hydraulic fluid inflow of a following unit of a next aggregate pair.
  • the hydraulic fluid drainage of the command unit of the last pair of aggregates is finally connected to the hydraulic fluid inlet of the following unit of the first pair of aggregates.
  • the invention has for its object to provide a lifting device for lifting heavy loads, which allows a synchronous lifting at multiple points of attack without active control and preferably ensures safe operation without additional holding means.
  • a generic lifting device at least three aggregate pairs are provided, which engage at different points of attack of a vehicle or its carrier.
  • the aggregate pairs are no longer as in a cross-coupled, but hydraulically cooperatively coupled in a series circuit, in such a way that each of the hydraulic fluid drainage of the command aggregate of a preceding pair of aggregates connected to the hydraulic fluid inlet of the following aggregate pair of the next aggregate pair, wherein it is essential that the hydraulic fluid outflow of the Command aggregate of a last aggregate pair is connected to the hydraulic fluid inflow of the following unit of a first aggregate pair.
  • all pairs of units are fed via two separate pressure lines wherein each of the two pressure lines a part of the operated as a command aggregates cylinder-piston units are hydraulically controlled.
  • the invention is based on the recognition that a command / sequence arrangement of cylinder-piston units not only allows a synchronous lifting at two lifting points or the introduction of a redundant second hydraulic circuit, but that with a paired arrangement of cylinder-piston units by a command / sequential Arrangement a forced synchronization of the strokes of separately controlled hydraulic units can be achieved.
  • Such aggregate pairs in each of which a command and a follower unit are mechanically coupled, can be connected according to the Applicant to a series circuit almost any length, each of the hydraulic fluid drainage of the command unit is fluidly connected to the hydraulic fluid inlet of the following unit of aggregate pair.
  • Such a lifting device with three or more aggregate pairs is mainly for lifting heavy and heavy loads, especially of motor vehicles such as trucks, locomotives or the like, suitable.
  • a truck together with semitrailer or a whole freight train can be raised simultaneously.
  • the cylinder-piston units of each pair of aggregates can simply be coupled together mechanically. This happens, for example, by each cylinder and piston the two cylinder-piston units of a pair of aggregates mechanically rigid with each other or with a common component to which they attack, are connected.
  • a check valve is provided in a preferred embodiment of the invention in a hydraulic fluid supply to at least one of the command units.
  • one check valve per hydraulic circuit most preferably per command cylinder is provided.
  • the hydraulic fluid outlets of the cylinder-piston units operated as a follow-up unit are preferably connected to a storage tank of the at least one hydraulic pump.
  • each aggregate pair may be provided an overflow, which is arranged such that only is fluidly connected to the overflow in an end position of the respective cylinder-piston unit of the hydraulic fluid inlet of the respective unit.
  • an overflow channel is realized in the form of a recess, for example a groove, in the inner wall of the cylinder of the relevant cylinder piston unit.
  • two spaced apart in the displacement direction of the piston bores may be provided, which are fluid-conductively connected to each other.
  • the overflow channel can be designed such that it connects the hydraulic fluid inlet and the hydraulic fluid outlet of the unit in the region of the upper or the lower dead center of the respective cylinder-piston unit.
  • both the command units and the following units are provided with an overflow, wherein the overflow of a command aggregate with the hydraulic fluid inlet of the associated following unit and the overflow of the following unit are connected to the storage tank of the at least one hydraulic pump.
  • the lifting device is formed in preferred embodiments as a pillar or ram lifting platform, in each case one aggregate pair is provided as the drive per lifting column or punch.
  • the cylinder-piston units can be arranged hanging in the lifting columns, so that a lifting under train, respectively by retraction of a piston in a cylinder of the cylinder-piston units, takes place.
  • the lifting device is designed as a stamp lift, then the cylinder-piston units are preferably arranged so that a lifting under pressure, in each case by extending a piston from a cylinder of the cylinder-piston units takes place.
  • the lifting device may be designed in the manner of a scissor lift with two rails, which are each supported by at least two, preferably four aggregate pairs.
  • the cylinder-piston units each of a pair of aggregates form scissor levers by these articulated at one end facing away from the rail and are hinged at the other end to each other from spaced points on the associated rail.
  • the rails can not overturn laterally and can be dispensed with an additional guide
  • four pairs of units per rail are preferably provided here, wherein the cylinder-piston units of two pairs of aggregates arranged laterally offset from each other and articulated at its end facing away from the rail via a common axis of rotation connected to each other.
  • FIG. 1 shows in a first embodiment, a ram lift 10 with four Hubstkovn 11-14.
  • the Hubstempeln 11-14 two parallel Auffahrschienen 15,16 worn on a motor vehicle drive up and can be raised with them.
  • Two lifting pistons each carry one of the ramps 15,16.
  • the lifting rams 11-14 are actuated by hydraulic drives, which are housed together with corresponding punch guides in mounting boxes 17,18.
  • the mounting boxes 17,18 are provided for underfloor mounting in the floor of a workshop or a corresponding pit in the workshop floor.
  • the hydraulic drives of the lifting ram 11,12 at the front end and the hydraulic actuators of the lifting ram 13,14 at the rear end of the two loading ramps 15,16 are housed in pairs in a common mounting box 17, 18.
  • the mounting of the mounting boxes is done such that their respective upper edges are flush with the level of the workshop floor (not shown).
  • Two ramps 19a, 19b are mounted at the front end of the ramps 15,16 on the workshop floor, so that a vehicle in the lowered state of the ram lifting platform 10 on the ramps 19a, 19b can ascend on the ramps 15,16.
  • an aggregate pair respectively forms a lifting element of the lifting platform, in which a total of eight cylinder piston units for the four lifting pistons 11-14 are provided.
  • the two cylinder-piston units of an aggregate pair are mounted vertically within or below the associated Hubstempels, so that the lifting ram is raised by synchronous extension of the piston of the two cylinder-piston units.
  • the individual pairs of aggregates are included, as discussed below FIG. 3 is explained, merged hydraulically to a sequence of command / sequence arrangements.
  • FIG. 2 shown a pillar lift. It has 4 lifting columns 21-24, each of which has a hydraulically actuated support arm 21'-24 '.
  • the support arms 21'-24 ' can be pivoted under a retracted between the lifting columns vehicle and positioned so that the vehicle with the support arms 21'-24' can be raised.
  • the lifting columns 21-24 are set up individually and individually bolted to the workshop floor.
  • Each of the lifting columns 21-24 comprises a hydraulic drive which, as in the first embodiment, is formed by two cylinder piston units per lifting column.
  • the cylinder-piston units are here suspended mounted in the lifting columns, so that a lifting under train by synchronous retraction of the piston takes place in the cylinder of the cylinder-piston units.
  • Hydraulic lines 25, above the lifting columns run, connect the cylinder-piston units of the individual lifting columns hydraulically.
  • FIG. 3 shows a schematic representation of the hydraulic plan of the lift 20 from the second embodiment.
  • the arrangement comprises eight cylinder piston units K1, F1 to K4, F4, which are grouped into four aggregate pairs. Each aggregate pair is, as already mentioned, associated with one of the lifting columns 21-24 of the lifting platform 20.
  • the cylinder-piston units are connected so that by pressurization, a retraction of the piston in the cylinder and thus a lifting is done under train.
  • the corresponding cylinder-piston units are connected in reverse, so that by pressurizing the pistons extend out of the cylinders and thus takes place a lifting under pressure.
  • FIG. 4 A corresponding hydraulic plan for the ram lift 10 from FIG. 1 , in which the cylinder-piston units are installed so that a lifting by extending the piston rod is carried out under pressure, is in FIG. 4 shown.
  • each identical or equivalent components are provided with the same reference numerals.
  • Each of the aggregate pairs F1, K1; F2; K2; F3, K3 and F4, K4 each have a command and a follower.
  • the hydraulic fluid supply of the command units K1-K4 is connected via corresponding hydraulic lines 34, 36a, 37a, 36b, 37b to the pressure port of a pump, here a gear pump 31, which conveys hydraulic fluid from a storage tank 33 via a suction filter 32.
  • the follower cylinders F1-F4 are connected with their hydraulic fluid inlet respectively to the hydraulic fluid outflow of the respective command unit of the preceding aggregate pair, as will be explained in more detail below.
  • a hydraulic line 34 which branches at a T-piece, leads to two hydraulic blocks 35a, 35b.
  • the hydraulic block 35a supplies the command cylinders K1, K3 on one side of the lift.
  • the hydraulic block 35b accordingly supplies the command cylinders K2, K4 to the other side of the lift.
  • the respective pistons of the units K1-K4 are pushed upwards. There is a lifting of an attached to the units load. Since these are double-acting hydraulic cylinders in which the two opposing piston surfaces are supplied with hydraulic fluid, hydraulic fluid is displaced above the respective pistons and flows through the upper hydraulic connection of the units K1-K4 serving as a hydraulic outflow to a respective following unit F1-F4 The piston of the respective follower units F1-F4 is also moved upwards. The displaced by the pistons of the following units F1-F4 hydraulic fluid is passed through overflow lines 42 back into the storage tank 33.
  • the follower units can also be designed as hydraulic cylinders acting only on one side, so that there is no hydraulic fluid on the piston top which would have to be led back to the storage tank.
  • the dimensioning of the command units K1-K4 and the follower units F1-F4 is selected so that their pistons start up at the same speed.
  • only the effective (annular) piston surface of the follower units F1-F4 must be selected to be the same size as the piston surface of the command units K1-K4.
  • the hydraulic fluid outflow of the command cylinder K1 of the first unit pair is connected via a hydraulic line 38 to the hydraulic fluid inflow of the following cylinder F2 of the second aggregate pair.
  • the hydraulic fluid outflow of the command cylinder K2 of the second aggregate pair is connected via a hydraulic line 39 to the hydraulic fluid inflow of the following cylinder F3 of the third aggregate pair.
  • the hydraulic fluid drainage of the command cylinder K3 of the third unit pair is in turn connected via a hydraulic line 40 to the hydraulic fluid inlet of the follower cylinder F4 of the fourth unit pair, and the hydraulic fluid drainage of the command cylinder K4 of the fourth unit pair is finally connected via a hydraulic line 41 to the hydraulic fluid inlet of the follower cylinder F1 of the first unit pair.
  • the hydraulic fluid outlets of all slave cylinders are connected via a hydraulic line 42 to the storage tank 33.
  • the hydraulic lines 38-41 are highlighted with bold lines.
  • the following unit F2 is synchronized via the hydraulic coupling with the command unit K1. Since follower unit F2 and the associated command unit K2 engage at the same stroke point, the stroke travel and speed of these units must also be synchronized with one another. Due to the hydraulic coupling between the command unit K3 and follower unit F3 synchrony between the second and third unit pair forced, as well as between the third and fourth unit pair by the hydraulic coupling between command unit K3 and following unit F4, and between the fourth and the first unit pair by the hydraulic Coupling between command unit K4 and follower unit F1.
  • the pressure line 34 coming from the pump 31 branches to the two hydraulic lines 36a, 37a, which lead to the command units K1 and K3. Another branch leads via a hydraulic line 43a and a pressure relief valve 44a back into the storage tank.
  • the pressure relief valve 44a serves as a safety valve to absorb pressure peaks and also opens when overloading the lift.
  • a check valve 45a, 46a is provided in each case. This has the function of preventing a lowering of the lift at a hydraulic leak in one of the hydraulic circuits, since it prevents a backflow of the hydraulic fluid and thus a pressure drop in the other hydraulic circuits.
  • the hydraulic pressure in the individual hydraulic circuits upstream and downstream of the check valves 45a, 46a to determine possible pressure variations and defects.
  • the proper functioning of the check valves 45a, 46a are checked.
  • a branch is respectively provided by the hydraulic lines 36a, 37a, which leads via corresponding hydraulic lines 47a, 48a to a 3/2-way valve 49a, for example a ball valve integrated in the hydraulic block 35a.
  • a 3/2-way valve 49a for example a ball valve integrated in the hydraulic block 35a.
  • the hydraulic fluid can be drained from the lines 36a, 37a via a lowering brake 50a and returned to the storage tank 33.
  • 3/2-way valve 49a and lowering brake 50a are used for controlled lowering of the lift.
  • the two hydraulic rams 35a, 35b are basically the same, as already mentioned.
  • the respective corresponding components are designated by the reference numerals 43a-50a and 43b-50b.
  • the two 3/2-way valves 49a, 49b are mechanically connected to each other via a common operating lever 51, so that it is ensured that both 3/2-way valves 49a, 49b are simultaneously opened and closed to lower the lift.
  • a dipstick 52 in the storage tank allows the control of the level of the hydraulic fluid.
  • Command and following unit of a pair of units are mechanically coupled to each other on the piston side as well as on the cylinder side. This ensures that the lifting movement of a command cylinder transmitted to the next following command cylinder via the hydraulically connected next following slave cylinder and thus these are synchronized to each other.
  • the cylinder-piston units transfer channels of the type described above, in the end position of the piston, the hydraulic fluid in and out of each unit via a small channel in the Connect the cylinder inner wall in the area of the end position.
  • all command units are powered by a single hydraulic pump. Equally, it would be possible to provide a plurality of hydraulic pumps for the command units, for example, one pump per hydraulic block. Here, however, care must be taken that no too large pressure differences occur. This can be achieved for example by appropriately sized pressure relief valves.
  • FIG. 5 Shown herein is a single lift rail 51, typically two such lift rails 51 are combined to a lift.
  • the lifting rail 51 comprises a loading ramp 52, under which eight cylinder piston units K1'-K4 ', F1'-F4' are arranged.
  • the cylinder-piston units K1'-K4 'and F1'-F4' are grouped as in the previous embodiments to aggregate pairs K1 'F1', K2 'F2', K3 'F3' and K4 'F4', wherein in each unit pair a cylinder Piston unit is commanded as a command aggregate and the other as a follower unit.
  • the cylinder-piston units of an aggregate pair are here, however, not arranged parallel to each other unlike in the previous embodiments, but are connected at their cylinder-side ends via a respective bottom-side axis 53, 54 articulated.
  • each unit pair K1 'F1', K2 'F2', K3 'F3' and K4 'F4' thus forms a V-shaped arrangement whose center angle varies with the extended length of the respective cylinder-piston units:
  • the center angle is flattened until it reaches almost 180 ° and the loading ramp 52 is approximately flat on the ground. If the piston rods are extended out of the cylinders, the center angle becomes sharper and the loading ramp 52 is raised.
  • the cylinder-piston units of the individual pairs of aggregates can move together or move apart in a scissor-like manner around the up-up In this way, the cylinder-piston units of the individual pairs of aggregates can move together or move apart in a scissor-like manner in order to lift the loading ramp 52 and act like the scissors levers of a scissor lift of conventional design.
  • the cylinders of the cylinder-piston units K1 ', F1', K2 'and F2' are connected via the bottom-side rotation axis 53 and the cylinders of the cylinder-piston units K3 ', F3', K4 'and F4' are connected via the bottom-side rotation axis 54.
  • the cylinder-piston units K1'-K4 'and F1'-F4 must be synchronized. This is preferably done in the manner according to the invention by a series connection of the individual aggregate pairs, i. in that in each case the hydraulic fluid outlet of the command unit of a preceding aggregate pair is hydraulically connected to the hydraulic fluid inlet of the following aggregate pair of the next aggregate pair.
  • a lift bar acting as a scissor cylinder-piston units are also used independently of the presently claimed series or ring circuit of the aggregate pairs and thus forms an independent technical contribution. It is also not necessary that the aggregate pairs in a master / slave control or operated as command and follower units. Rather, all cylinder-piston units can be hydraulically controlled independently, as long as this is done only sufficiently synchronized.
  • two lifting rails 51 can be combined to form a lift.
  • it depends on a simultaneous and uniform lifting of the two ramps 52, so that in this case again a synchronization by series or ring circuit of the individual pairs of units according to the present invention, can be used.
  • a corresponding hydraulic plan for a lift with two lifting rails 51 is in FIG. 6 shown.
  • the cylinder-piston units K1'-K8 'and F1'-F8' again equipped with overflow channels in the region of the top dead center, so that low gear differences and pressure differences between the individual cylinder-piston units due to leaks or thermal expansion can be compensated by raising the lift to its final position.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)

Claims (12)

  1. Dispositif de levage (10, 20) destiné à soulever de lourdes charges, en particulier pont élévateur, avec une pluralité d'ensembles cylindre-piston (F1-F4, K1-K4) disposés par paires, dans lequel chacun des ensembles cylindre-piston (F1-F4, K1-K4) présente au moins une admission de fluide hydraulique et au moins une partie des ensembles cylindre-piston (K1-K4) présente en outre une évacuation de fluide hydraulique, et dans lequel chaque paire d'ensembles comprend un ensemble cylindre-piston (K1-K4) exploité en ensemble de commande et relié à un branchement de pression d'au moins une pompe hydraulique (31), et l'autre ensemble cylindre-piston respectif (F1-F4) est exploité en ensemble asservi, par le fait que son admission de fluide hydraulique est relié à l'évacuation de fluide hydraulique d'un des ensembles cylindre-piston (K1-K4) exploités en ensembles de commande, sachant qu'il est prévu au moins trois paires d'ensembles et que les paires d'ensembles coopèrent hydrauliquement entre elles dans un montage en série de telle sorte que l'évacuation de fluide hydraulique de l'ensemble de commande (K1, K2, K3) d'une paire d'ensembles précédente est chaque fois reliée à l'admission de fluide hydraulique de l'ensemble asservi (F2, F3, F4) de la paire d'ensembles immédiatement consécutive, et que l'évacuation de fluide hydraulique de l'ensemble de commande (K4) d'une dernière paire d'ensembles est reliée à l'admission de fluide hydraulique de l'ensemble asservi (F1) d'une première paire d'ensembles,
    caractérisé en ce que toutes les paires d'ensembles sont alimentées au moyen de deux conduites de pression (36a, 36b, 37a, 37b ; 61a, 61b) séparées l'une de l'autre, sachant qu'une partie respective des ensembles cylindre-piston (K1-K4 ; K1'-K8') exploités en ensembles de commande est hydrauliquement commandée au moyen de chacune des deux conduites de pression (36a, 36b, 37a, 37b ; 61a, 61b).
  2. Dispositif de levage selon la revendication 1, dans lequel les ensembles cylindre-piston (K1-K4, F1-F4) de chaque paire d'ensembles sont couplés mécaniquement entre eux.
  3. Dispositif de levage selon l'une des revendications précédentes, dans lequel au moins un des ensembles cylindre-piston (K1-K4, F1-F4) de chaque paire d'ensembles présente chaque fois un canal de transfert qui est disposé de telle sorte que l'admission de fluide hydraulique de l'ensemble cylindre-piston concerné est fluidiquement reliée au canal de transfert uniquement dans une position finale de l'ensemble concerné.
  4. Dispositif de levage selon l'une des revendications précédentes, dans lequel un clapet anti-retour (46a, 47a, 46b, 47b) est prévu dans une conduite (36a, 37a, 36b, 37b) d'apport de fluide hydraulique d'au moins un des ensembles de commande (K1-K4).
  5. Dispositif de levage selon l'une des revendications précédentes, dans lequel les évacuations de fluide hydraulique des ensembles cylindre-piston (F1-F4) exploités en ensembles asservis sont reliées à un réservoir de stockage (33) de la pompe hydraulique (31) au moins unique.
  6. Dispositif de levage selon l'une des revendications précédentes, dans lequel les paires d'ensembles agissent en différents points de levage d'au moins une plate-forme de levage (15, 16).
  7. Dispositif de levage selon l'une des revendications précédentes, qui est réalisé sous forme de pont élévateur (20, 10) à colonnes ou à plongeurs, dans lequel il est prévu une paire d'ensembles par colonne de levage (21-24) ou respectivement par plongeur (11-14).
  8. Dispositif de levage selon la revendication 7, qui est réalisé sous forme de pont élévateur (20) à colonnes et dans lequel les ensembles cylindre-piston (K1-K4, F1-F4) sont disposés suspendus dans les colonnes de levage (21-24) de telle sorte que le soulèvement s'effectue par traction, respectivement par la rentrée d'un piston dans un cylindre.
  9. Dispositif de levage selon la revendication 7, qui est réalisé sous forme de pont élévateur (10) à plongeurs et dans lequel les ensembles cylindre-piston (K1-K4, F1-F4) sont disposés de telle sorte que le soulèvement s'effectue par compression, respectivement par le déploiement d'un piston hors d'un cylindre.
  10. Dispositif de levage selon l'une des revendications 1 à 6, qui comprend de préférence deux rails (52) qui sont respectivement portés par au moins deux et de préférence quatre paires d'ensembles (K1' F1', K2' F2', K3' F3', K4' F5', K5' F5', K6' F6', K7' F7', K8' F8'), sachant que les ensembles cylindre-piston de chaque paires d'ensembles, sous la forme de leviers à ciseaux, sont reliés entre eux de manière articulée à une extrémité opposée au rail (52) et sont articulés à l'autre extrémité au rail associé (52) en des points mutuellement distants.
  11. Dispositif de levage selon la revendication 10, dans lequel il est prévu quatre paires d'ensembles par rail (51) et dans lequel les ensembles cylindre-piston de deux paires respectives d'ensembles sont disposés en décalage latéral mutuel et sont, à leur extrémité opposée au rail (52), reliés entre eux de manière articulée par l'intermédiaire d'un axe de rotation commun (53, 54).
  12. Dispositif de levage selon la revendication 1, dans lequel les deux conduites de pression (36a, 36b, 37a, 37b ; 61a, 61b) séparées l'une de l'autre sont séparées hydrauliquement l'une de l'autre par au moins un clapet anti-retour (46a, 47a, 46b, 47b).
EP14190252.8A 2013-11-27 2014-10-24 Dispositif de levage destiné à soulever de lourdes charges Active EP2878571B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013019722.8A DE102013019722A1 (de) 2013-11-27 2013-11-27 Hubvorrichtung zum Heben schwerer Lasten

Publications (2)

Publication Number Publication Date
EP2878571A1 EP2878571A1 (fr) 2015-06-03
EP2878571B1 true EP2878571B1 (fr) 2016-04-13

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EP14190252.8A Active EP2878571B1 (fr) 2013-11-27 2014-10-24 Dispositif de levage destiné à soulever de lourdes charges

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Country Link
US (1) US9919905B2 (fr)
EP (1) EP2878571B1 (fr)
CN (1) CN104671147B (fr)
DE (1) DE102013019722A1 (fr)

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CN108439271A (zh) * 2018-05-22 2018-08-24 珠海太阳鸟游艇制造有限公司 一种游艇的智能升降平台
CN109797972A (zh) * 2019-04-01 2019-05-24 中国建筑土木建设有限公司 用于大跨度梁钢筋的托举装置及其使用方法
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US9919905B2 (en) 2018-03-20
DE102013019722A1 (de) 2015-05-28
CN104671147A (zh) 2015-06-03
EP2878571A1 (fr) 2015-06-03
CN104671147B (zh) 2018-07-31

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