EP1454873B1 - Dispositif de levage à ciseaux - Google Patents

Dispositif de levage à ciseaux Download PDF

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Publication number
EP1454873B1
EP1454873B1 EP03004756A EP03004756A EP1454873B1 EP 1454873 B1 EP1454873 B1 EP 1454873B1 EP 03004756 A EP03004756 A EP 03004756A EP 03004756 A EP03004756 A EP 03004756A EP 1454873 B1 EP1454873 B1 EP 1454873B1
Authority
EP
European Patent Office
Prior art keywords
lift device
scissor
scissor lift
traction means
coupling
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.)
Expired - Lifetime
Application number
EP03004756A
Other languages
German (de)
English (en)
Other versions
EP1454873A1 (fr
Inventor
Michael Kaufmann
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.)
PRO HUB Hebetechnik GmbH
Original Assignee
PRO HUB Hebetechnik GmbH
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 PRO HUB Hebetechnik GmbH filed Critical PRO HUB Hebetechnik GmbH
Priority to EP03004756A priority Critical patent/EP1454873B1/fr
Priority to DE50305742T priority patent/DE50305742D1/de
Priority to AT03004756T priority patent/ATE346011T1/de
Priority to CNB2004100074726A priority patent/CN1315717C/zh
Priority to US10/792,283 priority patent/US7213686B2/en
Publication of EP1454873A1 publication Critical patent/EP1454873A1/fr
Application granted granted Critical
Publication of EP1454873B1 publication Critical patent/EP1454873B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B66F7/065—Scissor linkages, i.e. X-configuration

Definitions

  • the invention relates to a scissor lift device with at least two pairs of scissors connected by a pivot axis, wherein the pivot axis between the respective end portions of the scissor members is arranged, and with a drive for raising and lowering the scissor members by means of a traction means, with at least one coupling bridge with two pivotally arranged push rods , which are pivotally connected to a respective scissor member, wherein the coupling bridge carries a deflection roller for the fixed to the scissor lift traction means.
  • Such a scissor lift device is for example the subject of WO 99/62813 A1, which corresponds to the preamble of claim 1.
  • the traction means are formed by rods which are interconnected by means of a pivotable two-armed lever.
  • the distance between the upper or the lower ends of the scissor members is changed by the traction means.
  • the traction means is connected to one end of one of the scissor members and by means of a deflection roller at an upper end of the other scissor member to the drive and thereby retractable.
  • the traction means acts on an expansion body, which lies in the lowered rest position of the scissor lift near the lower end of a scissor link between this and the resting upper end of the other scissor member.
  • the traction means is not wound up by means of the drive, but has a closed end to a loop portion, so as to prevent slipping of the traction means.
  • US 4 858 888 already discloses a scissor lift device in which the free end of the support arm is guided by an angled guide arm, which is also articulated to the first scissor member.
  • the invention has for its object to provide a way to perform a Scherenhubvorraum of the type mentioned in such a way that the drive power required during operation is substantially reduced. Furthermore, the Scherenhubvorraum should be designed customizable with little effort to different applications.
  • the scissor lift device has two coupling bridges arranged on both sides of the pivot axis, wherein the first coupling bridge is equipped with at least one deflection roller and the second coupling bridge is provided with a fixation for the traction means.
  • the coupling bridge is equipped with the deflection roller, so that by applying the tensile force of the distance and thereby at the same time the lifting height can be changed with little effort.
  • the peak load to be applied by the drive is substantially reduced.
  • a significantly lower wear because the deflection of the traction means is subject to only very low friction losses.
  • the scissor lift allows a simple adaptation to different bedingengen by only the traction means must be replaced with larger load requirements. Cumbersome redesigns can be avoided in many cases.
  • a considerably uniform force is achieved in the scissor members by the two opposite coupling bridges by means of the respective thrust struts, thereby increasing the reliability and at the same time reduces the burden of individual thrust struts.
  • a particularly advantageous development is also realized in that the pivot axis and the coupling bridges are arranged in a common, in particular horizontal, plane. As a result, a uniform lifting movement is achieved while reducing fluctuations in the required drive power between the extreme positions of the scissor lift.
  • a modification of the present invention is particularly simple, in which the traction means between the two coupling bridges is repeatedly guided back and forth in several paths by means of a plurality of deflection rollers arranged on the two coupling bridges.
  • the in particular parallel to each other guided webs could be in a common horizontal, in particular determined by the pivot axis level next to each other. It is particularly useful, however, if the tracks of the traction means are arranged one above the other. As a result, the deflection of the traction means takes place even in a stationary outside of the scissor lift device positioned drive for the traction means exclusively in one plane. The thus acting on the traction load and any signs of wear are significantly reduced.
  • a particularly promising development of the invention is also created in that a plurality of mutually parallel traction means wrap around the pulley in opposite directions.
  • the parallel guided traction means can be performed both on a common deflection roller as well as on individual, in particular coaxial, pulleys.
  • the traction means may be designed, for example, as a plastic or wire rope, as a chain or as a wedge or toothed belt. In contrast, a design in which the traction means is designed at least in sections as a belt is particularly practical.
  • the webbing combines high flexibility and tensile strength and also requires no lubricant. Furthermore, the webbing can be used without disturbing operating noise and allows a flat overall height.
  • a particularly versatile embodiment of the invention is also achieved in that the scissor lift device is modularly expandable by means of further paired scissor members.
  • double or tandem constructions can be realized with little effort, which can be actuated by a single common traction means.
  • a required according to the prior art control effort for a synchronous movement thus eliminated.
  • several traction means are used, they can be actuated according to a further advantageous embodiment, in particular by means of a common drive.
  • Another particularly promising embodiment of the present invention is achieved in that the two coupling bridges are connected to one another by means of a continuously variable length to adapt to different lifting heights guide element.
  • This particular telescopically executed guide element limits the relative mobility of the two coupling bridge to each other to only one degree of freedom, so that only the distance between the two coupling bridges is variable. The orientation of the coupling bridges is thus unchangeable.
  • the guide element is designed as a damper or emergency actuator, so as to avoid inadvertent lowering of the lifting device in a sudden strain relief.
  • the guide element In normal operation, for example, equipped with a hydraulic cylinder guide element allows damping during load changes.
  • the drive can be arranged spatially separated from the scissor lift stationary. However, an embodiment is particularly compact if the drive is arranged on the coupling bridge in a plane determined by the joints of the push rods and the pivot axis.
  • Several drives can each be assigned to a coupling bridge and arranged opposite each other.
  • FIG. 1 shows a scissor lift device 1 according to the invention in a side view.
  • the scissor lift device 1 has two scissor members 4, 5 arranged below a lifting plane 2 and connected in pairs by a pivot axis 3, wherein the pivot axis 3 lies in the middle between the respective end sections 6, 7 carrying the lifting plane 2, and end sections 9 resting on a bottom surface 8, 10 of the scissor members 4, 5 is arranged.
  • the scissor lift device 1 is equipped with a fixedly arranged on the bottom surface 8 drive 11, on its winding drum 12 designed as a belt tension means 13 for raising and lowering the scissor members 4, 5 is equipped.
  • the scissor lift device 1 with two on both sides of the pivot axis 3 arranged parallel to each other, coupling bridges 14, 15 equipped, the first coupling bridge 14 with at least two pulleys 16 and the second coupling bridge 15 with a guide roller 16 and a fixing 17 for the traction means 13 equipped is, so that the traction means 13 in several tracks 18, 19, 20, 21 is guided over each other.
  • the two coupling bridges 14, 15 are each supported by two identical push rods 22, 23 on the scissor members 4, 5 pivotally.
  • the coupling bridges 14, 15 are connected by an acting as a damper, in particular realized by a cylinder, guide member 24 so that load changes do not lead to undesirably high peak loads.
  • FIG. 2 shows, in a detailed view of the scissor lifting device 1 shown in FIG. 1, a further traction means 25 which is guided in a plane parallel to the plane of representation and which is actuated by the common drive 11.
  • a further traction means 25 which is guided in a plane parallel to the plane of representation and which is actuated by the common drive 11.
  • the pulleys 16 In contrast to the course shown in Figure 1 of the tracks 18, 19, 20, 21 of the traction means 13, wraps around the other train means 25, the pulleys 16 in opposite directions. This lifted by the tensile force F of the traction means 13, 25 initiated moments against each other.
  • FIG. 3 shows an enlarged detail view of the scissor lifting device 1 shown in FIG. 1 in a lowered position, in which the coupling bridges 14, 15 have a distance A.
  • the traction means 13 is guided by means of a fixed to the second coupling bridge 15 guide roller pair 26.
  • the required tensile forces in the illustrated lowered position only slightly deviate from the operating position shown in FIG. 1, so that a uniform stroke movement is achieved with a constant pulling movement of the traction mechanism 13.
  • FIG. 4 shows the scissor lift device 1 in a modified form with two scissor members 4, 5 connected below the lifting plane 2 by means of the stationary drive 11 arranged on the bottom surface 8, on the winding drum 12 of which the pulling means 13 for erecting and lowering the scissor members 4 , 5 is fixed.
  • the scissor lift device 1 has in this embodiment, only a single side of the pivot axis 3 arranged coupling bridge 14, which carries a plurality of deflection rollers 16.
  • the fixation 17 for the traction means 13 is connected to the pivot axis 3 in a common vertical plane, so that the traction means 13 in several tracks 18, 19, 20, 21 is guided one above the other.
  • the coupling bridge 14 is supported by two identical push rods 22, 23 on the scissor members 4, 5 pivotally.
  • the distance a of the coupling bridge 14 from the pivot axis 3 is variable, so that the lifting height h can be set in the desired manner.
  • To stabilize the coupling bridge 14 is connected by the guide member 24 with the pivot axis 3, so that a substantially vertical orientation of the coupling bridge 14 is guaranteed at different heights h.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Glass Compositions (AREA)
  • Insulated Conductors (AREA)
  • Sanitary Device For Flush Toilet (AREA)
  • Types And Forms Of Lifts (AREA)

Claims (13)

  1. Dispositif de levage à ciseaux (1) comportant au moins deux éléments de ciseau (4, 5) reliés par paire par un axe de pivotement (3), moyennant quoi l'axe de pivotement (3) est disposé entre les sections d'extrémité respectives (6, 7, 8, 9) des éléments de ciseau (4, 5), et comportant un entraînement (11) permettant de soulever et d'abaisser les éléments de ciseau (4, 5) à l'aide de moyens de traction (13, 25), comportant au moins une traverse d'accouplement (14, 15) avec deux barres de poussée (22, 23) disposées de manière à pouvoir se déplacer par pivotement, qui sont reliées de manière mobile par pivotement respectivement à un élément de ciseau (4, 5), moyennant quoi la traverse d'accouplement (14, 15) supporte une poulie de renvoi (16) pour les moyens de traction (13, 25) fixés au dispositif de levage à ciseaux (1), caractérisé en ce que le dispositif de levage à ciseaux (1) présente deux traverses d'accouplement (14, 15) disposées des deux côtés de l'axe de pivotement (3), moyennant quoi la première traverse d'accouplement (14) est équipée d'au moins une poulie de renvoi (16) et la deuxième traverse d'accouplement (15) est équipée d'un élément de fixation (17) pour les moyens de traction (13, 25).
  2. Dispositif de levage à ciseaux (1) selon la revendication 1, caractérisé en ce que l'axe de pivotement (3) et les traverses d'accouplement (14, 15) sont disposés dans un même plan, en particulier horizontal.
  3. Dispositif de levage à ciseaux (1) selon la revendication 2, caractérisé en ce que les moyens de traction (13, 25) sont guidés entre les deux traverses d'accouplement (14, 15) à l'aide de plusieurs poulies de renvoi (16) disposées sur les deux traverses d'accouplement (14, 15) dans plusieurs voies (18, 19, 20, 21).
  4. Dispositif de levage à ciseaux (1) selon la revendication 3, caractérisé en ce que les voies (18, 19, 20, 21) du moyen de traction (13, 25) sont disposées les unes au-dessus des autres.
  5. Dispositif de levage à ciseaux (1) selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que les barres de poussée (22, 23) présentent une distance qui coïncide entre la traverse d'accouplement (14, 15) et l'élément de ciseau (4, 5) qui lui est respectivement affecté.
  6. Dispositif de levage à ciseaux (1) selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que plusieurs moyens de traction (13, 25) disposés parallèlement les uns aux autres s'enroulent en sens inverse autour de la poulie de renvoi (16).
  7. Dispositif de levage à ciseaux (1) selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que les moyens de traction (13, 25) sont au moins en partie configurés comme une sangle.
  8. Dispositif de levage à ciseaux (1) selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de levage à ciseaux (1) peut être étendu d'une manière modulaire par l'intermédiaire d'autres éléments de ciseau (4, 5) disposés par paire.
  9. Dispositif de levage à ciseaux (1) selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de levage à ciseaux (1) présente plusieurs moyens de traction (13, 25) pouvant être actionnés en particulier à l'aide d'un entraînement commun (11).
  10. Dispositif de levage à ciseaux (1) selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que les deux traverses d'accouplement (14, 15) sont reliées l'une à l'autre à l'aide de l'élément de guidage à longueur variable (24) en continu pour s'adapter aux différentes hauteurs de levage (h).
  11. Dispositif de levage à ciseaux (1) selon la revendication 10, caractérisé en ce que l'élément de guidage (24) est configuré sous la forme d'un élément de réglage d'urgence et/ou d'un amortisseur.
  12. Dispositif de levage à ciseaux (1) selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que l'entraînement (11) est disposé sur la traverse d'accouplement (14, 15).
  13. Dispositif de levage à ciseaux (1) selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que l'entraînement (11) est relié à une poulie d'enroulement (12) pour les moyens de traction (13, 25), dont le diamètre d'enroulement est déterminé en fonction de l'épaisseur du matériau des moyens de traction (13, 25), de telle sorte qu'une vitesse de rotation constante de la poulie d'enroulement (12) permet d'obtenir une modification constante de la hauteur de levage (h) du dispositif de levage à ciseaux (1).
EP03004756A 2003-03-04 2003-03-04 Dispositif de levage à ciseaux Expired - Lifetime EP1454873B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP03004756A EP1454873B1 (fr) 2003-03-04 2003-03-04 Dispositif de levage à ciseaux
DE50305742T DE50305742D1 (de) 2003-03-04 2003-03-04 Scherenhubvorrichtung
AT03004756T ATE346011T1 (de) 2003-03-04 2003-03-04 Scherenhubvorrichtung
CNB2004100074726A CN1315717C (zh) 2003-03-04 2004-03-04 剪刀式起重设备
US10/792,283 US7213686B2 (en) 2003-03-04 2004-03-04 Scissor lift mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03004756A EP1454873B1 (fr) 2003-03-04 2003-03-04 Dispositif de levage à ciseaux

Publications (2)

Publication Number Publication Date
EP1454873A1 EP1454873A1 (fr) 2004-09-08
EP1454873B1 true EP1454873B1 (fr) 2006-11-22

Family

ID=32798766

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03004756A Expired - Lifetime EP1454873B1 (fr) 2003-03-04 2003-03-04 Dispositif de levage à ciseaux

Country Status (5)

Country Link
US (1) US7213686B2 (fr)
EP (1) EP1454873B1 (fr)
CN (1) CN1315717C (fr)
AT (1) ATE346011T1 (fr)
DE (1) DE50305742D1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012003063U1 (de) 2012-03-27 2012-04-11 Rofa Gmbh Scherenhubtisch
DE202013100340U1 (de) 2012-07-13 2013-02-08 Rofa Industrial Automation Ag Hubtischsteuerung
EP2644560A1 (fr) 2012-03-27 2013-10-02 Rofa Industrial Automation AG Table élévatrice à ciseaux
EP3476792A1 (fr) 2017-10-25 2019-05-01 Flexlift Hubgeräte GmbH Table élévatrice à compas
DE102021206534A1 (de) 2021-06-24 2022-12-29 Robert Bosch Gesellschaft mit beschränkter Haftung Hubquereinheit

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US20060037518A1 (en) * 2004-08-17 2006-02-23 Adelardo Lopez Alba Power-operated scissor lift table
US7120228B2 (en) * 2004-09-21 2006-10-10 Jordan Valley Applied Radiation Ltd. Combined X-ray reflectometer and diffractometer
DE102006006467B4 (de) * 2006-02-10 2008-09-11 Grundei Hebetische Verladetechnik Gmbh Scherenhubtisch
EP2019076A1 (fr) * 2007-07-27 2009-01-28 Ludwig Göcke Table élévatrice à pietements articulés
US8469152B2 (en) * 2007-09-25 2013-06-25 Hunter Engineering Company Methods and systems for multi-capacity vehicle lift system
WO2010129311A1 (fr) * 2009-05-07 2010-11-11 Vehicle Service Group, Llc Dispositif de levage pour automobile à liaisons multiples
US8714524B2 (en) * 2009-12-16 2014-05-06 Herkules Equipment Corporation Belt-driven transportation system
US8662477B2 (en) * 2009-12-16 2014-03-04 Herkules Equipment Corporation Belt-driven transportation system
US8243878B2 (en) * 2010-01-07 2012-08-14 Jordan Valley Semiconductors Ltd. High-resolution X-ray diffraction measurement with enhanced sensitivity
US8733508B2 (en) 2010-04-02 2014-05-27 Herkules Equipment Corporation Scissor lift assembly
EP2590884B1 (fr) * 2010-07-05 2014-11-05 Kone Corporation Dispositif de compensation et ascenseur
US8687766B2 (en) 2010-07-13 2014-04-01 Jordan Valley Semiconductors Ltd. Enhancing accuracy of fast high-resolution X-ray diffractometry
US8437450B2 (en) 2010-12-02 2013-05-07 Jordan Valley Semiconductors Ltd. Fast measurement of X-ray diffraction from tilted layers
CA2834371C (fr) * 2011-03-25 2020-09-29 Boomerang Systems, Inc. Table elevatrice a ciseaux
US8781070B2 (en) 2011-08-11 2014-07-15 Jordan Valley Semiconductors Ltd. Detection of wafer-edge defects
US9296596B2 (en) 2012-10-15 2016-03-29 Cameron Lanning Cormack Hybrid wedge jack/scissor lift lifting apparatus and method of operation thereof
CN103183294B (zh) * 2012-11-14 2015-04-22 湖北华昌达智能装备股份有限公司 皮带张紧结构及应用该皮带张紧结构的剪叉升降设备
US9422142B2 (en) 2013-08-01 2016-08-23 Herkules Equipment Corporation Scissor-type lift assembly
US9726624B2 (en) 2014-06-18 2017-08-08 Bruker Jv Israel Ltd. Using multiple sources/detectors for high-throughput X-ray topography measurement
US10227222B2 (en) 2015-07-31 2019-03-12 Vehicle Service Group, Llc Precast concrete pit
US10246313B2 (en) 2015-07-31 2019-04-02 Vehicle Service Group, Llc Precast concrete pit
US9961989B2 (en) 2016-03-07 2018-05-08 Marc Stefan Witt Radial scissor lift table and method
US10377611B2 (en) 2016-10-28 2019-08-13 Advance Lifts, Inc. Scissors lift with height sensor system
CN112874306A (zh) * 2019-11-29 2021-06-01 比亚迪股份有限公司 车辆供电装置
DE102021207141B3 (de) * 2021-07-07 2022-12-29 Siemens Healthcare Gmbh Patientenlagerungstisch
DE102021209083B4 (de) * 2021-08-18 2023-06-07 Siemens Healthcare Gmbh Patientenlagerungstisch

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012003063U1 (de) 2012-03-27 2012-04-11 Rofa Gmbh Scherenhubtisch
EP2644560A1 (fr) 2012-03-27 2013-10-02 Rofa Industrial Automation AG Table élévatrice à ciseaux
DE102012006028A1 (de) 2012-03-27 2013-10-02 Rofa Industrial Automation Ag Scherenhubtisch
US9340398B2 (en) 2012-03-27 2016-05-17 Rofa Industrial Automation Ag Scissor lift table
DE202013100340U1 (de) 2012-07-13 2013-02-08 Rofa Industrial Automation Ag Hubtischsteuerung
EP2684834A1 (fr) 2012-07-13 2014-01-15 Rofa Industrial Automation AG Commande de table de levage
EP3476792A1 (fr) 2017-10-25 2019-05-01 Flexlift Hubgeräte GmbH Table élévatrice à compas
DE102021206534A1 (de) 2021-06-24 2022-12-29 Robert Bosch Gesellschaft mit beschränkter Haftung Hubquereinheit

Also Published As

Publication number Publication date
US7213686B2 (en) 2007-05-08
US20040251453A1 (en) 2004-12-16
EP1454873A1 (fr) 2004-09-08
DE50305742D1 (de) 2007-01-04
ATE346011T1 (de) 2006-12-15
CN1315717C (zh) 2007-05-16
CN1526634A (zh) 2004-09-08

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