EP2053010B1 - Dispositif de verrouillage - Google Patents

Dispositif de verrouillage Download PDF

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Publication number
EP2053010B1
EP2053010B1 EP20080014555 EP08014555A EP2053010B1 EP 2053010 B1 EP2053010 B1 EP 2053010B1 EP 20080014555 EP20080014555 EP 20080014555 EP 08014555 A EP08014555 A EP 08014555A EP 2053010 B1 EP2053010 B1 EP 2053010B1
Authority
EP
European Patent Office
Prior art keywords
locking device
ratchet
actuator
ratchets
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP20080014555
Other languages
German (de)
English (en)
Other versions
EP2053010A3 (fr
EP2053010A2 (fr
Inventor
Thomas Grötzinger
Thomas Deuring
Jürgen GROTZ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maha Maschinenbau Haldenwang GmbH and Co KG
Maha GmbH and Co KG
Original Assignee
Maha Maschinenbau Haldenwang GmbH and Co KG
Maha GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maha Maschinenbau Haldenwang GmbH and Co KG, Maha GmbH and Co KG filed Critical Maha Maschinenbau Haldenwang GmbH and Co KG
Publication of EP2053010A2 publication Critical patent/EP2053010A2/fr
Publication of EP2053010A3 publication Critical patent/EP2053010A3/fr
Application granted granted Critical
Publication of EP2053010B1 publication Critical patent/EP2053010B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
    • 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
    • B66F7/18—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by one or more hydraulic or pneumatic jacks by a single central jack

Definitions

  • the invention relates to a locking device for releasably locking relatively movable components of particular lifting devices, according to the preamble of claim 1.
  • a locking device is from the EP 1 813 568 A1 known.
  • locking devices are available in a variety of different versions, with which the support elements of the respective lifting system can be determined together with the overlying load in predetermined stroke positions and secured against unintentional lowering or falling.
  • Conventional locking mechanisms operate frictionally by means of wedges or other clamping members or positively by engagement of pawls, hooks, claws od.
  • locking elements such as recesses, hooks od.
  • the conventional locking devices in terms of design and operation on a special Lifting device aligned and designed.
  • EP 1813 568 A1 describes a lift comprising a pillar, a carriage movable along the pillar and means forming a lock / unlock latch and intended to block the carriage in a given position.
  • the object of the invention is a locking device for releasably locking relatively movable components in particular to provide lifting devices that is suitable for different types of lifting and lifting systems.
  • the latch mechanism comprises a dimensionally stable elongated housing which is mounted in its central region via a pivot bearing on the one component that in the front region and in the rear region of the elongated housing each have a pawl with one or more teeth is mounted pivotably and that the actuator mechanical transmission members for jointly actuating the two spaced apart from each other in the longitudinal direction pawls.
  • the pivotable mounting of the dimensionally stable housing on the one component allows an automatic alignment of the housing and thus also the pawls incorporated therein for the position and orientation of the fixedly mounted on the other component notches.
  • This automatic position adjustment ensures a reliable engagement of the longitudinally spaced apart and arranged on both sides of the pivot bearing pawls in the holding elements, such as recesses, stops, etc. of the detents.
  • the simultaneous and joint operation of the two spaced apart longitudinally pawls using the mechanical transmission links associated with the actuator ensures a secure and multiple fixing the latch mechanism, as is ensured by pivotal mounting of the housing and simultaneous activation of the pawl pivoting that the pawls also at not fully accurate mutual alignment of the two components to be locked work safely.
  • each latch mechanism at least one coupled to the actuator elongated slide, which is mounted longitudinally displaceable in the housing, the middle part bridges the pivot bearing and at the end parts - pressure pieces are formed for actuating a respective pawl.
  • the pawls rotatably mounted on pins on its back ever an integrally formed pressure piece on which the slide engages to disengage the teeth of the pawls from the engagement with the catches on actuation of the actuator.
  • the pawls are pivoted by spring force into its engaged position in the detents and are held in this engaged position until a return pivoting of the pawls takes place by activating the actuator to its original position.
  • a pressure medium such as hydraulic oil or compressed air actuated actuator
  • the pressure medium actuator can of course also Other drive units, such as mechanically actuated actuators or electromagnetic actuators and combinations are used.
  • the in the Figures 1 and 2 illustrated locking device includes a latching mechanism 1 which is pivotally mounted on a component 2, and a detent mechanism 3, the large area in the form of a stable rack on the second component 4 is attached.
  • the components 2 and 4 are in Fig. 2 indicated only schematically.
  • the latch mechanism 1 further includes an elongated housing 5 of approximately rectangular cross section, which has in its central region a transverse bore in which a bearing bush 6 is seated. In this bushing 6 engages an end pin 7 of an axle 8, which is part of the pivot bearing and the component 2 carries.
  • an actuator 10 is attached to the abutting surface, which contains in the illustrated embodiment, a supplied via a trailing line 11 with a pressure medium cylinder 12, in which a piston 13 is slidably received.
  • a slider 15 is fixed, which consists of an elongated and bent-shaped steel plate and is slidably mounted in a free space 16 of the housing 5 in the longitudinal direction. This slide 15 is in the direction of the double arrow in Fig. 1 moved by actuating the actuator 12.
  • Fig. 2 how out Fig. 2 it can be seen, are in the housing 5, two pawls 20, 21 about a respective pin 22, 23 pivotably mounted by predetermined angular amounts. These pawls have on their side facing the rack 3 each two spaced teeth 24, 25 which are designed so that they can positively engage in corresponding tooth gaps 26 of the rack.
  • the pivoting or bearing center of the two toothed pawls 20, 21 is located in the two in the respective upper pawl part.
  • Trunnions 22, 23 Like out Fig. 2 can be seen, at the upper left end of each toothed pawl 20, 21 each have a projection 28, 29 formed, which forms a limit stop for the pivoting movement of the respective toothed pawl 20, 21.
  • engage on each of these lugs 28, 29 actuating parts of the slider 15, so that by a longitudinal displacement of this slide 15 in Fig. 2 to the top, the two pawls 20, 21 pivoted together about their bearing pins 22, 23 to the left and thus disengaged from the teeth 26 of the rack 4 are brought.
  • a spring for example a plate or leaf spring 30, 31, which presses against the associated projection 28, 29 and a force or bias on the pawls 20, 21 exerts this in their engaged position - to give away and hold contrary to the indicated arrows.
  • sliding plates 40 may be mounted, which reduce the sliding friction in the displacement movements of the housing 5 on the second component.
  • the pawls 20, 21 are provided at their spaced from the pivot bearing end with two teeth 24, 25, which engage simultaneously in corresponding tooth recesses of the toothed rail 3.
  • the pawls 20, 21 as well as the teeth 24, 25 integrally formed on them are made of a sintered material and consequently do not need to be machined or only to a limited extent machined.
  • shaped bodies made of sintered materials have a high strength and are extremely resistant to wear.
  • Unlocking the pawls 20, 21 required forces are much lower than the unlocking forces required in conventional locking mechanisms of lifting devices that can be applied regularly only by hydraulic actuators.
  • pneumatic and / or hydraulic actuators of relatively small dimensions are possible.
  • Fig. 3a, 3b is a so-called. Radgreifer shown in side view and in perspective, which is part of a Radgreifer lift for commercial vehicles and buses.
  • This wheel gripper has a lower support fork 50, the 51 mounted at its two spaced parallel profile webs 52 rollers 52 have. These two rollers 52, in conjunction with a rear wheel 53, permit movements of the wheel gripper on the ground as well as accurate positioning in front of and on the tire of a commercial vehicle.
  • a lifting fork 54 located within the support fork 50, a lifting fork 54, the parallel front side beveled support rods 55 a - not enclose - pneumatic tires in its lower region.
  • This lifting fork 54 is attached to the rear of a lifting carriage 57 which engages around a column 58.
  • Mounted on the upper end plate 59 of the pillar 58 is an electric gear motor 60 which is connected to the lift carriage 57 via a pull string, rack, or screw shaft 61 to raise or lower the lift carriage 57 together with the overlying vehicle wheel.
  • a hand drawbar 62 is provided with a hydraulic lifting mechanism 64 at the rear end of the support fork 51.
  • Fig. 4 is the section B in Fig. 3 shown in enlarged partial section.
  • the pawl mechanism used in this wheel lift corresponds to that in the Figures 1 and 2 illustrated and described in detail above embodiment, wherein like components are provided with the same reference numerals.
  • the housing 5 of the latch mechanism 1 is arranged, in which the slide 15 is mounted vertically displaced limited. Pressed this slide 15 is provided by a provided at the lower end of the housing 5 actuator 10, which is pressure-medium-actuated and in Fig. 2 is shown in detail.
  • two pawls 20, 21 are pivotally mounted in the predetermined vertical distance, engage the double teeth 24, 25 in the tooth gaps between teeth 26 of a tooth or grid bar 3 in the manner shown. The release from the in Fig. 4 position shown by activating the actuator 10 and pivoting back the pawls 20, 21st
  • a pillar of a pillar lift for motor vehicles is shown, which is formed in a conventional manner and includes a fixed to the floor or foundation of a workshop pillar 70 mounted at the upper end of a drive unit 71, usually a gear motor, is mounted.
  • a drive unit 71 usually a gear motor
  • In the column interior is a lifting mechanism with a lifting slide 72 and a rotatably mounted in the column threaded spindle whose vertically movable nut carries the lifting carriage 72.
  • two telescopically extendable pivot arms 73, 74 are hinged horizontally pivotable.
  • Fig. 6 is an enlarged sectional view of the section A in Fig. 5 , As can be seen on this lifting a locking device is provided as in Fig. 1, 2 is shown.
  • This locking device includes an elongated vertical housing 5, in which a slider 15 is mounted vertically displaceable. To release the engaged double-tooth pawls 24, 25, an actuator 10 is activated, which is arranged at the lower end of the housing 5 and acts with its movable member on the slider 15.
  • the construction and operation of this locking mechanism after Fig. 6 corresponds to the execution after Fig. 1 and 2 ,
  • the device according to the invention can be advantageously used in different units for temporarily fixing and connecting certain construction elements and assemblies. These include hoists, lifting devices and floor conveyors, in which moving components must be securely locked in predetermined positions and operating conditions.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Lock And Its Accessories (AREA)
  • Actuator (AREA)
  • Transmission Devices (AREA)

Claims (7)

  1. Dispositif de verrouillage destiné à l'arrêt amovible de composants mobiles l'un par rapport à l'autre, en particulier sur des dispositifs élévateurs, comportant
    - un mécanisme à cliquet (1) monté sur l'un des composants (8) et comportant au moins un cliquet (20, 21) capable de se déployer et rétracter,
    - des crans (24) montés sur l'autre composant (3) dans la zone d'accès du cliquet (20, 21), dans lesquels des talons (24, 25) disposés sur le cliquet (20, 21) peuvent venir se rétracter et se déployer par coopération de formes, et
    - un mécanisme de commande (10) destiné à faire déployer le cliquet à l'encontre d'une force élastique, le mécanisme de commande (10) comprenant des organes de transmission (15) mécaniques destinés à l'actionnement commun des deux cliquets (20, 21) espacés l'un de l'autre en direction longitudinale,
    caractérisé en ce que
    - le mécanisme à cliquet (1) comprend un boîtier allongé (5) rigide en forme qui, dans sa zone médiane, est retenu sur l'un des composants (2) par un palier de pivotement (6, 7), et
    - un cliquet respectif (20, 21) pourvu d'une ou de plusieurs dents (24, 25) est monté avec faculté de pivotement dans chaque zone d'extrémité du boîtier (5).
  2. Dispositif de verrouillage selon la revendication 1, caractérisé en ce que les organes de transmission mécaniques comprennent au moins un coulisseau allongé (15) dont la partie médiane ponte le palier de pivotement (6, 7) et sur lequel sont prévus des éléments d'appui destinés à actionner un cliquet respectif (20, 21).
  3. Dispositif de verrouillage selon la revendication 1 ou 2, caractérisé en ce que les cliquets (20, 21) montés en rotation sur des tenons (22, 23) comprennent sur leur côté arrière chacun un élément d'appui (28, 29) moulé attaqué par le coulisseau (15).
  4. Dispositif de verrouillage selon l'une des revendications précédentes, caractérisé en ce que par force élastique les cliquets (20, 21) sont capables de pivoter dans leur position d'engagement et sont également retenus dans cette position d'engagement.
  5. Dispositif de verrouillage selon l'une des revendications précédentes, caractérisé en ce que les dents (24, 25) au moins des cliquets (20, 21) sont constitués d'un matériau fritté.
  6. Dispositif de verrouillage selon l'une des revendications précédentes, caractérisé en ce que l'élément d'enclenchement coopérant avec les cliquets (20, 21) est un rail (3) pourvu d'organes de retenu, par exemple une crémaillère ou un rail perforé.
  7. Dispositif de verrouillage selon l'une des revendications précédentes, caractérisé en ce que le mécanisme de commande (10) comprend un mécanisme de commande mécanique et/ou électromagnétique susceptible d'être actionné par un fluide sous pression.
EP20080014555 2007-10-19 2008-08-14 Dispositif de verrouillage Not-in-force EP2053010B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200720014662 DE202007014662U1 (de) 2007-10-19 2007-10-19 Verriegelungsvorrichtung

Publications (3)

Publication Number Publication Date
EP2053010A2 EP2053010A2 (fr) 2009-04-29
EP2053010A3 EP2053010A3 (fr) 2011-10-19
EP2053010B1 true EP2053010B1 (fr) 2012-11-28

Family

ID=38831253

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080014555 Not-in-force EP2053010B1 (fr) 2007-10-19 2008-08-14 Dispositif de verrouillage

Country Status (4)

Country Link
EP (1) EP2053010B1 (fr)
DE (1) DE202007014662U1 (fr)
DK (1) DK2053010T3 (fr)
ES (1) ES2397197T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2754831C1 (ru) * 2020-12-14 2021-09-07 Федеральное государственное бюджетное образовательное учреждение высшего образования "Ярославский государственный технический университет" ФГБОУВО "ЯГТУ" Стойка трансмиссионная

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008024051A1 (de) 2008-05-16 2009-11-19 Maha Maschinenbau Haldenwang Gmbh & Co. Kg Arretiervorrichtung
DE102012106073A1 (de) * 2012-07-06 2014-01-09 Gerhard Finkbeiner Hebevorrichtung und Verfahren zur Montage und Demontage eines Rades mit einer solchen Hebevorrichtung
NL2018120B1 (en) * 2017-01-04 2018-07-25 Stertil Bv Lifting device for lifting a vehicle with a locking system and lifting system and method therefor
CN109879197B (zh) * 2019-03-21 2020-03-17 广州市顺力机械有限公司 一种用于举升机的定位保险锁及其使用方法
DE102022121167A1 (de) 2022-08-22 2024-02-22 Tiemo Sehon Verschiebesystem und Lackieranlage mit einem solchen Verschiebesystem

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3934680A (en) * 1975-02-26 1976-01-27 Dresser Industries, Inc. Safety latch for automotive hoists or the like
US4076104A (en) * 1977-02-18 1978-02-28 Dresser Industries, Inc. Safety latch for automotive hoists
JPS6432900U (fr) * 1987-08-25 1989-03-01
FR2896785B1 (fr) * 2006-01-27 2008-06-20 F F B Soc Par Actions Simplifi Pont elevateur a faible encombrement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2754831C1 (ru) * 2020-12-14 2021-09-07 Федеральное государственное бюджетное образовательное учреждение высшего образования "Ярославский государственный технический университет" ФГБОУВО "ЯГТУ" Стойка трансмиссионная

Also Published As

Publication number Publication date
DK2053010T3 (da) 2013-02-25
EP2053010A3 (fr) 2011-10-19
EP2053010A2 (fr) 2009-04-29
DE202007014662U1 (de) 2007-12-20
ES2397197T3 (es) 2013-03-05

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