EP2878571A1 - 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
EP2878571A1
EP2878571A1 EP14190252.8A EP14190252A EP2878571A1 EP 2878571 A1 EP2878571 A1 EP 2878571A1 EP 14190252 A EP14190252 A EP 14190252A EP 2878571 A1 EP2878571 A1 EP 2878571A1
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EP
European Patent Office
Prior art keywords
cylinder
lifting
units
hydraulic fluid
piston
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
EP14190252.8A
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German (de)
English (en)
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EP2878571B1 (fr
Inventor
Hans Nussbaum
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.)
Otto Nussbaum GmbH and Co KG
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Otto Nussbaum GmbH and Co KG
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Publication of EP2878571A1 publication Critical patent/EP2878571A1/fr
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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 hydraulic lines, the lift still does not decrease because 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.
  • 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 hydraulically cooperatively coupled as before in a crossover, but in a series circuit, in such a way that in each case the hydraulic fluid outflow of the command unit of a preceding pair of aggregates connected to the hydraulic fluid inflow of the following aggregate pair, wherein it is essential that the hydraulic fluid drain of the command unit of a last pair of units is connected to the hydraulic fluid inlet of the following unit of a first pair of aggregates.
  • 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 following unit are mechanically coupled, can be connected according to knowledge of the Applicants to a series circuit almost any length, each of the hydraulic fluid drainage of the command unit is fluidly connected to the hydraulic fluid inflow 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
  • 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, preferably four pairs of aggregates per rail are provided, 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 drain 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.
  • a plurality of hydraulic pumps for the command units, for example, one pump per command unit, or one pump per hydraulic block.
  • care must be taken that no too large pressure differences occur. This can be achieved for example by appropriately sized pressure relief valves.
  • the lifting rail 51 comprises a loading rail 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 each aggregate pairs can move together in a scissor-like manner or apart to raise the Auffahrschiene 52 and act as the scissors lever 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)
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 true EP2878571A1 (fr) 2015-06-03
EP2878571B1 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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US (1) US9919905B2 (fr)
EP (1) EP2878571B1 (fr)
CN (1) CN104671147B (fr)
DE (1) DE102013019722A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101867371B1 (ko) 2016-10-10 2018-06-15 한국기계연구원 경량형 중공사 수중 호흡장치
US10737921B2 (en) * 2017-03-14 2020-08-11 Larry Wayne MOTLEY Hoist-it
CN107879283A (zh) * 2017-11-17 2018-04-06 张耀庭 捣炉机升降结构
DE102018105573A1 (de) * 2018-03-12 2019-09-12 Otto Nussbaum Gmbh & Co. Kg Hebebühne für kraftfahrzeuge
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
CN110182724B (zh) * 2019-05-23 2020-12-25 山西大学 同步液压动车底板叉车

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0826684A (ja) * 1994-07-15 1996-01-30 Dainippon Printing Co Ltd 刷本束の持ち上げ装置
US5553990A (en) * 1990-04-27 1996-09-10 Kytola, Sr.; David Hydraulic wheelchair lift
JPH1121088A (ja) * 1997-07-03 1999-01-26 Yamamoto Koujiyuuki Kk 重量物用ジャッキ装置
DE29916254U1 (de) 1999-09-17 2000-03-02 Otto Nußbaum GmbH & Co KG, 77694 Kehl Hebebühne, insbesondere für Kraftfahrzeuge
DE20214066U1 (de) * 2002-09-12 2003-03-06 IME-Autolift GmbH, 83395 Freilassing Scherenlift
CN101746692A (zh) * 2010-01-24 2010-06-23 海特克液压有限公司 多机同步液压升降平台
EP2428482A1 (fr) 2010-09-14 2012-03-14 Otto Nussbaum GmbH & Co. KG Elévateur pour véhicules automobiles
WO2013062215A1 (fr) * 2011-10-25 2013-05-02 헤스본 주식회사 Pont élévateur du type à demi-ciseau pour véhicules ayant une structure améliorée

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1878738A (en) * 1930-07-16 1932-09-20 Tunnel And Mine Machinery Comp Jack mechanism
DE1128962B (de) * 1958-10-31 1962-05-03 Friedrich Reichert Maschf Hebebuehne mit mehreren durch eine gemeinsame Pumpe beaufschlagten hydraulischen Hubzylindern
CH408350A (de) * 1962-05-14 1966-02-28 Bieri & Sohn H Verfahren und Vielfach-Dosierpumpe an hydraulischer Anlage, zum synchronen Betätigen einer Vielzahl von Arbeitszylindern der Anlage
IT1091993B (it) * 1977-02-10 1985-07-06 Kempf & Co Ag Apparecchiatura idraulica di sollevamento
US4161229A (en) * 1977-05-31 1979-07-17 Exxon Production Research Company Hydraulic synchronizing system for coordinating movement of the vibrator guide rods
NL7713705A (nl) * 1977-12-12 1979-06-14 Itt Gelijkloopinrichting voor hydraulische cilinders.
DE3318550A1 (de) * 1983-05-20 1984-12-06 Otto Nußbaum GmbH & Co KG, 7640 Kehl Hubvorrichtung, insbesondere hebebuehne fuer kraftfahrzeuge
DE3333292A1 (de) * 1983-09-15 1985-04-18 Walter 7290 Freudenstadt Finkbeiner Gleichlaufvorrichtung fuer hebeboecke
US4949540A (en) * 1988-11-21 1990-08-21 Bishamon Industries Corporation Hydraulic actuator system having non-cavitating flow equalizer
DE19709474A1 (de) * 1997-03-07 1998-09-10 Rexroth Mannesmann Gmbh Hydraulische Hubeinrichtung
CA2206010C (fr) * 1997-05-23 2004-09-07 La Compagnie Miniere Quebec Cartier Dispositif de levage de vehicule lourd et methode
IT1302678B1 (it) * 1998-10-15 2000-09-29 Texo Srl Sistema volumetrico di azionamento per ponti sollevatori di veicoli.
US6189432B1 (en) * 1999-03-12 2001-02-20 Hunter Engineering Company Automotive lift hydraulic fluid control circuit
US6763916B2 (en) * 2002-04-12 2004-07-20 Delaware Capital Formation, Inc. Method and apparatus for synchronizing a vehicle lift
DE10242672A1 (de) * 2002-09-13 2004-03-25 Maha Maschinenbau Haldenwang Gmbh & Co. Kg Steuervorrichtung für Hebebühnen
JP4199719B2 (ja) * 2004-10-18 2008-12-17 株式会社興研 移動式発電装置の自動揚降制御方法及び自動揚降型架台制御装置
NL1027870C2 (nl) * 2004-12-23 2006-06-26 Stertil Bv Hefsysteem.

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5553990A (en) * 1990-04-27 1996-09-10 Kytola, Sr.; David Hydraulic wheelchair lift
JPH0826684A (ja) * 1994-07-15 1996-01-30 Dainippon Printing Co Ltd 刷本束の持ち上げ装置
JPH1121088A (ja) * 1997-07-03 1999-01-26 Yamamoto Koujiyuuki Kk 重量物用ジャッキ装置
DE29916254U1 (de) 1999-09-17 2000-03-02 Otto Nußbaum GmbH & Co KG, 77694 Kehl Hebebühne, insbesondere für Kraftfahrzeuge
DE20214066U1 (de) * 2002-09-12 2003-03-06 IME-Autolift GmbH, 83395 Freilassing Scherenlift
CN101746692A (zh) * 2010-01-24 2010-06-23 海特克液压有限公司 多机同步液压升降平台
EP2428482A1 (fr) 2010-09-14 2012-03-14 Otto Nussbaum GmbH & Co. KG Elévateur pour véhicules automobiles
WO2013062215A1 (fr) * 2011-10-25 2013-05-02 헤스본 주식회사 Pont élévateur du type à demi-ciseau pour véhicules ayant une structure améliorée

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US20150144853A1 (en) 2015-05-28
CN104671147B (zh) 2018-07-31
EP2878571B1 (fr) 2016-04-13
DE102013019722A1 (de) 2015-05-28
US9919905B2 (en) 2018-03-20
CN104671147A (zh) 2015-06-03

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