WO2008131733A1 - Dispositif de blocage de bras porteur - Google Patents

Dispositif de blocage de bras porteur Download PDF

Info

Publication number
WO2008131733A1
WO2008131733A1 PCT/DE2008/000700 DE2008000700W WO2008131733A1 WO 2008131733 A1 WO2008131733 A1 WO 2008131733A1 DE 2008000700 W DE2008000700 W DE 2008000700W WO 2008131733 A1 WO2008131733 A1 WO 2008131733A1
Authority
WO
WIPO (PCT)
Prior art keywords
support arm
axis
locking unit
rotation
locking
Prior art date
Application number
PCT/DE2008/000700
Other languages
German (de)
English (en)
Other versions
WO2008131733A4 (fr
Inventor
Holger Seeliger
Armin Straub
Original Assignee
Maha Maschinenbau Haldenwang Gmbh & 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 & Co. Kg filed Critical Maha Maschinenbau Haldenwang Gmbh & Co. Kg
Publication of WO2008131733A1 publication Critical patent/WO2008131733A1/fr
Publication of WO2008131733A4 publication Critical patent/WO2008131733A4/fr

Links

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
    • B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions

Definitions

  • the present invention relates to a device for lifting objects, in particular vehicles with a support arm, a support element and a locking unit, with which an automatic, mechanical security between the support arm and the support element with improved operability and reliability can be realized.
  • the object of the invention is to provide a device for locking the support arm relative to a support member of a lifting device, which performs an automatic, mechanical security between the support arm and the support member with improved operability and reliability while having a low clearance.
  • the lifting device for lifting objects may have at least one support arm, at least one support element and / or at least one locking unit.
  • at least one support arm can be connected to the carrier element in such a way that the carrier arm has at least one rotational degree of freedom about an axis of rotation relative to the carrier element.
  • the lifting device may be characterized in that by a substantially parallel to the axis of rotation acting predetermined force (F) during a lifting movement of the support member with an arranged on the support arm object, the support arm with the support member by the locking is blockable.
  • the locking unit can be arranged at least partially coaxially about the axis of rotation.
  • the locking unit may be constructed from at least two sub-elements, wherein a sub-element rotatably connected to the support arm and / or the other sub-element rotatably connected to the carrier element.
  • each sub-element may have an annular surface and / or an at least triangular surface, which may be aligned substantially perpendicular and coaxial with the axis of rotation.
  • both annular surfaces and / or both at least triangular surfaces of the sub-elements per an axial-grooved ball bearing ring which may have radially arranged around the axis of depression recesses wherein the two sub-elements can communicate with each other via balls, wherein the balls during application the force (F) acting essentially parallel to the axis of rotation can be locked in the recesses and thereby the locking unit can be blocked.
  • the predetermined force may correspond to the weight of the support arm and / or the sum of the weight forces of the object to be lifted and the support arm.
  • the locking unit a positive and / or non-positive locking can be generated.
  • the locking unit can be designed as a gear pair, Kronradpar, pair of clutch plates, ball bearings, as production-related rough surfaces and / or as in particular coated with paint and / or by etching surface.
  • the lock can be canceled if the support arm and / or the support member comes into contact with a bottom surface and / or a designated release mechanism for the mechanical release of the lock manually and / or automatically operated.
  • a first locking moment can be generated by the weight force of the support arm and / or a second locking moment can be generated by the weight forces of the support arm and the object when the support element is raised with the object arranged on the support arm.
  • the first locking torque may be smaller than the second locking torque.
  • the first locking torque can be chosen so that after the manual adjustment of the support arm, the same remains safe in the set position, so that then a safe lifting of the object is possible.
  • the lifting device may be part of a lift, wherein the lift may have at least two lifting devices.
  • Figure 1 is a front view of the lifting device with locked
  • Lifting arm, Figure 2 is a front view of the lifting device in unarretiertem
  • Figure 3 is a front view of another embodiment of the
  • FIG. 5 shows a second embodiment of a locking unit
  • FIG. 5C shows a third embodiment of a locking unit
  • FIG. 6 shows an enlarged view of the support arm and of the FIG
  • Figure 7 is a schematic view for controlling a
  • FIG. 1 shows a lifting device with an object disposed thereon in a raised position.
  • the lifting device comprises a support arm 1 having at one end a receptacle 6 for receiving an object to be lifted 4. Furthermore, the support arm is divided at its other end into an upper end piece 11 and a lower end piece 12. The upper end piece 11 and the lower end piece 12 have in the direction of the lifting movement of the article 4 two equal sized, congruent aligned holes 7. Through both holes extends a rod 8, which connects the upper end piece 11 with the lower end piece 12.
  • the lifting device has a carrier element 2 with a protrusion 9. In this Vorstehung 9 there is at least one bore, but preferably two holes for receiving a respective rod 8, in turn, in each case a support arm 1 is connected.
  • the carrier element 2 is connected to a lifting unit 10, so that the carrier element 2 can perform vertical lifting movements relative to the lifting unit 10.
  • the lifting unit 10 is fixedly connected to a bottom surface 5.
  • the locking unit 3 which is aligned coaxially around the rod 8, is arranged.
  • the locking unit 3 consists of two sub-elements, a first sub-element in the form of an upper crown wheel and a second sub-element in the form of a lower crown wheel.
  • the upper crown wheel is in rotation with the underside of the upper end piece 11 in conjunction and the lower crown wheel is also rotatably connected to the upper side of the projection 9 of the support member 2 in conjunction.
  • the lifting device is in a raised state with the article 4 also in a raised position. Due to the weight F 1 of the article 4 and the weight F 2 of the support arm 1, the in Direction of the bottom surface 5 act, the support arm 1 is pressed in the direction of the bottom surface 5. By the sum of these weight forces, which corresponds to a predetermined force F, the crown wheel pair of the locking unit 3, in engagement, whereby a rotation of the support arm 1 relative to the support member 2 about an axis of rotation which is defined by the rod 8 is excluded.
  • no object 4 is arranged on the support arm 1, which is in a raised position.
  • the locking is effected by a first predetermined force F. Due to the weight F2 of the support arm 1 which acts in the direction of the bottom surface 5 and corresponds to a first predetermined force F, the tag arm 1 is locked to the support member 2. This results in the locking such a first locking torque that an adjustment of the support arm by hand by a user is possible.
  • Figure 2 shows the lifting device in a position in which the support arm 1 is not locked relative to the carrier element 2.
  • the rod 8 rests with its lower end on the bottom surface 5 and thus defines the lowest position of the support arm 1.
  • the carrier element 2 is also in its lowest position, whereby the locking unit 3 is in a decoupled state.
  • the upper crown wheel is not engaged with the lower crown wheel, whereby the support arm 1 a Rotational freedom with respect to the support member 2 about an axis of rotation, which is defined by the rod 8.
  • the support arm 1 can be moved to a desired position in which the receptacle 6 is located below a predetermined region of the article 4.
  • the receptacle 6 comes into contact with the predetermined area of the article 4.
  • Such predetermined areas are in vehicles body areas which have a high rigidity and are therefore particularly suitable for jacking or for lifting the vehicles.
  • the locking unit 3 can be unlocked when the support arm 1 comes into contact with the bottom surface 5 such that it is tilted relative to the support member 2 and thus is in a position in which the sub-elements of the locking unit 3 only partially engage each other.
  • the locking torque generated in the locking unit by this partial engagement allows an adjustment of the position of the support arm 1 by hand.
  • FIG. 3 shows a front view of a further embodiment of the lifting device.
  • This lifting device is shown in an upper position with locked support arm 1 and in a lower position with entarretiertem arm 1.
  • the support arm 1 of this embodiment substantially corresponds to the support arm 1 of the embodiment shown in Figures 1 and 2, but has no lower end piece.
  • the support arm 1 is only with an upper end 11th rotatably connected to the carrier element 2 via a rod 8.
  • this embodiment has a shortened rod 8.
  • the locking unit 3 is unlocked when at least a portion of the support arm 1 comes into contact with the bottom surface 5.
  • At least one sliding element may be attached to the underside of the support arm 1 in order to reduce the friction between the support arm 1 and the bottom surface 5.
  • the effort in the displacement of the support arm can be reduced.
  • FIG. 4 shows a plan view of the lifting device.
  • two support arms 1 are connected to the protrusion 9 of the support member 2 via a respective rod 8, which extends through the holes 7 of the upper and lower end pieces 11, 12 of the support arm 1.
  • the support arms 1 can each be pivoted about an axis of rotation, which is defined by the rod 8, so that the receptacles 6 can be positioned below an object 4.
  • the article to be lifted 4 for example, in particular vehicles can be used, has on its underside areas with which the receptacles 6 may particularly preferably come into contact. Due to the arrangement of two support arms 1 on each support element 2 of the object to be lifted 4 at the same time at several Regions come into contact with the receptacles 6 and thereby be raised particularly safe.
  • Figures 5A, 5B and 5C show by way of example and not limitation a selection of different locking units 3 with the sub-elements 31, 32, 34, 35, 37, 38, wherein the locking units 3 can alternatively be used to block the support arm 1 from the support element 2 to reach.
  • FIG. 5A shows a pair of crown wheels consisting of an upper crown wheel 31 and a lower crown wheel 32.
  • the crown wheels each have a central bore 33 through which the rod 8 extends on the support arm 1 or on the support element 2 in the mounted state.
  • the crown wheels have a toothing whose tooth flanks extend in the radial direction.
  • a coaxially arranged around the bore 33 annular surface is toothed on the upper side surface of the lower crown wheel 32 or on the lower side surface of the upper crown wheel 31 a coaxially arranged around the bore 33 annular surface toothed.
  • Both crown wheels 31, 32 have the same toothing properties, so that the teeth of the respective crown wheels 31, 32 can engage with each other.
  • FIG. 5B shows a locking unit 3, the partial elements of which are designed as an upper clutch disc 34 and a lower clutch disc 35.
  • Both clutch discs 34, 35 have a central bore 33 through which the rod 8 leads later in the assembled state between the support member 2 and the support arm 1.
  • the upper clutch disc 34 has at its lower Side surface of an annular, coaxially disposed around the bore 33 friction surface 36
  • the lower clutch disc 35 has on its upper side surface also has an annular coaxially disposed around the bore 33 friction surface 36.
  • the two clutch discs 34, 35 come with their friction surfaces to each other for support, so that a rotation of the discs to each other about a central axis which passes through the bore 33 is prevented and the clutch plates 34, 35 can transmit a moment.
  • FIG. 5C shows a locking unit 3 in the form of an axial-groove ball bearing.
  • the axial groove ball bearing has an upper disc 37 and a lower disc 38, which communicate with each other via balls 39. Both discs 37, 38 have a central bore 33. Both the upper disc 37 and the lower disc 38 have a groove in the Kugelabroll Chemistry 40, wherein the groove extends in a circle around the central axis of the bore 33.
  • recesses 41 are provided both on the lower disc 38 as well as on the upper disc 37. These recesses form discrete engagement points for the balls 39 of the axial groove ball bearing, in which the balls can assume fixed positions.
  • the support arm 1 In the unlocked state, the support arm 1 can be adjusted about the axis of rotation, wherein the balls 39 engage in the recesses 41 and thereby discrete locking points for the locking unit 3 are generated.
  • the predetermined force F which corresponds to the weight F 1 of the object to be lifted 4 and / or the weight F 2 of the support arm 1 and the sum of these weights and substantially acts in the axial direction of the ball bearing are both discs 37, 38 pressed against each other in such a way that the balls 39 can not be moved from their discrete positions and thus a rotation of the upper disc 37 relative to the lower disc 38 is prevented.
  • a rotationally fixed locking of the support arm 1 relative to the carrier element 2 is generated.
  • Figure 6 shows an enlarged view of the support arm 1 and the support member 2, in which further a separation mechanism 13 is provided.
  • the separation mechanism 13 is a coil spring which is supported with its upper end turn on the underside of the upper end portion 11 of the support arm 1 and is in communication with its lower end turn with the top of the projection 9 of the support element 2.
  • the coil spring is arranged coaxially in the bore 33 of the locking unit 3.
  • the coil spring has a spring stiffness, which allows the spring to generate a force which is greater than the weight F2 of the support arm 1, so that when not loaded arm 1, the spring force is sufficient to prevent unwanted locking of Support arm 1 to prevent the support member 2, in which it is ensured that the sub-elements 31, 32, 34, 35, 37, 38 are not engaged.
  • the spring force is always smaller than the weight F, resulting from the sum of the weight forces F2 of the support arm 1 and F 1 of the article 4.
  • the separating mechanism may be coaxially arranged around the outside of the locking unit 3.
  • several can Springs be provided to exert the parallel individual forces acting between the support arm 1 and the support member 2.
  • not shown embodiment may be provided as a separating mechanism, a lever device and / or a handle for manual decoupling.
  • the operator can unlock the support arm 1, after the object to be lifted produces no more locking force on the locking unit.
  • an actuator such as a hydraulic or pneumatic cylinder can be provided as a separation mechanism, which can be controlled manually or automatically, so that it can cause a Entarret mich the locking unit 3.
  • Figure 7 shows a schematic representation of the control of a lifting device, in which via an input device 14 commands for Auftial. Downward movement of the support member 2 can be input to the control unit 18 to cause a lifting or lowering movement of the article 4.
  • the support member 2 Upon input of an upward movement command, the support member 2 slowly starts to move upward at a predetermined first speed.
  • the locking is effected by means of the locking unit 3, when the support arm 1 lifts from the bottom surface 5.
  • locking sensors 15 are provided which detect the correct locking of the locking unit 3 and output a signal to the control unit 18.
  • manual input via the Input device 14 of an upward movement command can be input to the input device 14, a target height to which the object 4 is to be lifted.
  • control unit 18 When the control unit 18 receives a signal from the lock sensor 15 confirming the lock, the control unit 18 outputs a signal to the actuator 16 which controls the vertical movement of the support member 2 so that the speed of the support member is increased to a second predeterminable speed , This can be ensured that after locking the object 4 can be quickly raised or lowered to a target height. Furthermore, a position sensor 17 is provided which outputs signals to the control unit 18 permanently. The control unit 18 can thus determine the current position of the carrier element 2. From the signal of the position sensor 17, the control unit 18 can determine the path difference and the time difference until reaching the target position.
  • a predetermined path length before reaching the target height via the input device 14 can be entered, in which the control unit 18, the speed of the support member 2 from the second higher predetermined speed to the first lower speed back to prevent an abrupt stop the upward movement.
  • a down movement command or a command to move to the lowest position can be manually entered.
  • the control unit 18 outputs to the actuator 16 signals for slowly starting the downward movement of the article 4. After a predetermined time, the control unit 18 outputs another signal to increase the speed, the downward movement of the support member 2, to a second predetermined speed.
  • the control unit 18 When falling below a predetermined path difference to reach the lowest position, the control unit 18 outputs a further signal to the actuator 16 for reducing the speed of the carrier element 2 to a first, slow speed.
  • the carrier element 2 When the carrier element 2 has reached its lowest position, as shown in Figures 1 and 3, automatically take place a Entarret réelle the support arm 1, in which the rod 8 with its lower end and / or at least with a portion of the support arm on the bottom surface 5 comes to rest.
  • the control unit 18 may output a signal to the disconnection actuator 19, whereby, for example, a hydraulic, pneumatic or electrical element causes a release of the locking unit 3.

Abstract

La présente invention concerne un dispositif d'élévation comprenant un bras porteur (1) et un élément de support (2), le bras porteur (1) pouvant être maintenu avec l'élément de support (2) par une unité de blocage (3) de sorte que tous les degrés de liberté du bras porteur (1) par rapport à l'élément de support (2) sont bloqués, une fixation mécanique automatique pouvant être réalisée entre le bras porteur (1) et l'élément de support (2) avec une maniabilité et une fiabilité améliorées.
PCT/DE2008/000700 2007-04-27 2008-04-24 Dispositif de blocage de bras porteur WO2008131733A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710020041 DE102007020041A1 (de) 2007-04-27 2007-04-27 Tragarmarretierung
DE102007020041.4 2007-04-27

Publications (2)

Publication Number Publication Date
WO2008131733A1 true WO2008131733A1 (fr) 2008-11-06
WO2008131733A4 WO2008131733A4 (fr) 2009-01-15

Family

ID=39708743

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2008/000700 WO2008131733A1 (fr) 2007-04-27 2008-04-24 Dispositif de blocage de bras porteur

Country Status (2)

Country Link
DE (1) DE102007020041A1 (fr)
WO (1) WO2008131733A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202013102803U1 (de) * 2013-06-27 2014-09-29 Gerhard Finkbeiner Hebevorrichtung zum Heben und Senken von Fahrzeugen
CN104261310B (zh) * 2014-09-23 2018-11-16 芜湖市恒峰科技有限公司 一种举升机可调旋转支撑臂
DE102017108064A1 (de) * 2017-04-13 2018-10-18 Gerhard Finkbeiner Schwenkverriegelungsvorrichtung sowie Hebevorrichtung mit einer Schwenkverriegelungsvorrichtung
US11591195B2 (en) * 2019-10-22 2023-02-28 Automotive Lift Institute Automotive lift and swing arm restraint system for automotive lift

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2302272A1 (fr) * 1975-02-28 1976-09-24 Cfea Dispositif de securite pour elevateurs de vehicules automobiles a deux colonnes
DE2837582A1 (de) * 1978-08-29 1980-03-06 Zipperer B Fa Arretiervorrichtung fuer ein verschwenkbares element, insbesondere fuer einen verschwenkbaren tragarm einer hebebuehne fuer kraftfahrzeuge

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9200688A (nl) * 1992-04-14 1993-11-01 Stertil Bv Veiligheidspalinrichting.
DE29906854U1 (de) * 1999-04-16 1999-09-02 L B Bohle Maschinen Und Verfah Pharma-Hubsäule
DE10217064B4 (de) * 2002-04-17 2005-02-17 Maha Maschinenbau Haldenwang Gmbh & Co. Kg Säulenhebebühne

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2302272A1 (fr) * 1975-02-28 1976-09-24 Cfea Dispositif de securite pour elevateurs de vehicules automobiles a deux colonnes
DE2837582A1 (de) * 1978-08-29 1980-03-06 Zipperer B Fa Arretiervorrichtung fuer ein verschwenkbares element, insbesondere fuer einen verschwenkbaren tragarm einer hebebuehne fuer kraftfahrzeuge

Also Published As

Publication number Publication date
WO2008131733A4 (fr) 2009-01-15
DE102007020041A1 (de) 2008-10-30

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