EP2288570A1 - Dispositif d'arrêt - Google Patents

Dispositif d'arrêt

Info

Publication number
EP2288570A1
EP2288570A1 EP09745462A EP09745462A EP2288570A1 EP 2288570 A1 EP2288570 A1 EP 2288570A1 EP 09745462 A EP09745462 A EP 09745462A EP 09745462 A EP09745462 A EP 09745462A EP 2288570 A1 EP2288570 A1 EP 2288570A1
Authority
EP
European Patent Office
Prior art keywords
detent
locking
component
locking device
locking element
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
EP09745462A
Other languages
German (de)
English (en)
Other versions
EP2288570B1 (fr
Inventor
Thomas Deuring
Thomas Grötzinger
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
Priority to PL09745462T priority Critical patent/PL2288570T3/pl
Publication of EP2288570A1 publication Critical patent/EP2288570A1/fr
Application granted granted Critical
Publication of EP2288570B1 publication Critical patent/EP2288570B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/08—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement hydraulically or pneumatically 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
    • B66F7/06—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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49947—Assembling or joining by applying separate fastener
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32254—Lockable at fixed position

Definitions

  • the invention relates to a locking device for releasably locking relatively movable components, in particular for use on lifting devices, with the two mutually linearly movable parts can be releasably locked, which also ensures that an unwanted entanglement of the locking device is excluded and thus blocking or Failure of the apparatus, on which the locking device is provided, is prevented.
  • a latch mechanism is generally displaced relative to a rack, wherein the latch mechanism can be brought into engagement with the rack when a latching position is reached.
  • a uniform pitch of the teeth on the rack offers a variety equidistant detent positions in which the latch mechanism can be locked with the rack.
  • a scissor beam is connected at its upper end rotatably connected to a running rail and mounted with its lower end longitudinally displaceable on a foundation, and the second scissor stay with its lower end rotatably connected to the foundation and with its upper end longitudinally slidably connected to a running rail.
  • the slidably mounted ends of the scissor struts are connected to a pawl element which is displaceable along a rack.
  • this type of lift stage has a kinematics in which the linearly guided end of the scissor struts moves during a lifting or lowering movement of the scissor lift on a curved path. It follows that with a magnitude same lateral displacement of the latch mechanism from one latching position to the next latching position in terms of magnitude ever smaller stroke movement from one locking position to the next locking position of the lift occurs. Due to the large number of latching possibilities, it is difficult to latch the lift in predetermined, equidistant stroke positions.
  • the invention has the object, so on form a device of the structure described above, that in a particularly simple manner equidistant, predetermined latching positions of the lift can be ensured.
  • the invention teaches a locking device for releasably locking relatively movable components, in particular lifting devices comprising a lockable to a first component locking mechanism, with at least one locking unit, and a second component mountable locking element, wherein the locking element a plurality may have substantially identically designed detents, wherein the locking element in a plurality of predetermined detent positions with at least one detent releasably, formally and / or can be brought into frictional engagement.
  • the locking device may further comprise a force element for generating a relative movement between the locking element and at least one catch.
  • At least a first detent position, a second detent position and a third detent position with the locking element can be approachable in at least a portion of the locking element, wherein at least a first distance between the first detent position and the second detent position and a second distance between the second detent position and the third Detent position, different lengths may have.
  • the number of possible locking positions can be reduced to a smaller number of predetermined locking positions in a particularly simple manner, whereby the time required to find the equidistant locking positions is significantly reduced. It is well known to those skilled in the art that by corresponding numbering of the latching positions at least a first distance between the first latching position and the third latching position and a second distance between the second latching position and the first latching position can have different lengths.
  • the latching element may have a first partial area in which the first distance between two adjacent detents and the second distance between two adjacent detents is the same, and have a second partial area in which the first distance between two adjacent detents and the second distance between two adjacent latches is different, wherein the length values of the distances between each two adjacent notches in the longitudinal direction of the detent element continuously, steadily, abruptly and / or discontinuously increase or decrease.
  • the first component can be connected to a, third component
  • the second component can be connected to a fourth component
  • the first component being characterized by first movements in which the locking element is moved from a first detent position to a second detent position and / or to a third detent position, which is adjacent to the first and / or second latching position, wherein at least two of these latching positions are located in the second portion, is displaceable relative to the second component, and second movements of the third component relative to the fourth component are effected.
  • the detents corresponding to the detent positions can be spaced from one another such that the first movements have different lengths and the second movements always have the same lengths, wherein the first movements and the second movements are substantially perpendicular to each other.
  • a guide unit may be provided which is in communication with the latching element in such a way that the latching element can be latched exclusively in predetermined latching positions with the detents of the latching element.
  • the guide unit may have an outer contour and the locking element having an actuating means which may be in predetermined positions with the contour of the guide unit in contact, whereby in this position a contact between the locking element and the latch member can be prevented.
  • the force element may be a hydraulic cylinder, a stepper motor, an electromagnetic actuator, a spring element and / or a pneumatic cylinder.
  • the locking mechanism may comprise a dimensionally stable housing which is connected to the locking element via a Rotary joint may be in communication, wherein a first end portion of the force element may be in communication with the locking element, and a second end portion of the force element may be in communication with a housing.
  • the locking element may be a rack and the detents teeth, wherein the locking element may have at least one tooth which is engageable with the teeth of the rack engaged.
  • the locking element may be a perforated rail.
  • the locking element can have at least one first tooth and / or at least one second tooth, which can each be brought into engagement with a first latching unit and / or a second latching unit, wherein the guide unit prevents undesired engagement of the first tooth with the second latching unit ,
  • a control unit may be provided, with which a drive unit for generating a relative movement, between the locking mechanism and the latching element, such that a first predetermined position can be reached by a movement in a first direction and after reaching this position by a movement in a second direction that is substantially opposite the first direction, a second predetermined position is achievable.
  • a complete and secure locking of the locking mechanism with the locking element can be ensured in a particularly simple manner.
  • the control unit before and / or during the reaching of the second predetermined position, can activate the force element such that the locking element can be positively and / or frictionally engaged with a detent of the detent element and thereby corresponds to the second predetermined position of a detent position.
  • a force element actuate the locking element such that the locking element with a detent of the locking element form and / or non-positively engageable and thereby corresponds to the second predetermined position of a locking position.
  • the control unit can actuate the drive unit in such a way that first movement in the first direction can be generated and subsequently movement in a second direction can be generated, which is essentially opposite to the first direction of movement.
  • the force element can be controlled such that the positive and / or non-positive engagement of the locking element with a catch of the locking element solved becomes.
  • 1 is a perspective view of the locking device, 2 shows a longitudinal section through the locking device,
  • Fig. 4B is a side view of the second portion of the detent element.
  • a locking device 1 which has a dimensionally stable housing 6, in which a locking element 2 (not visible) is introduced.
  • the locking element 2 can be brought into engagement with a detent element 3.
  • the detent element 3 has identically designed detents 4, which each have a first detent unit 41 and a second detent unit 42.
  • On a side surface 110 of the detent element 3, a guide unit 104 is provided which has flat elevations 108. The distances between the elevations 108 essentially correspond to the distances between the detents 4.
  • the guide unit 104 is aligned with the detent element 3 such that its elevations 108 laterally cover the respectively second detent unit 42 of the detents 4. Further, in Fig.
  • the actuating means 106 can be seen, which is arranged on the locking element 2 and is in communication with the guide unit 104. During a lateral movement of the locking mechanism 1 along the detent element in the direction of the arrow L, the actuating means 106 comes into contact with the contour 105 of the guide unit 104 in the region of the elevations 108. This contact blocks this Actuator 106, the locking element 2 and thereby does not allow an extension of the locking element 2.
  • FIG. 2 shows a lateral sectional view in the longitudinal direction through the locking device.
  • a force element 5 is provided, in the form of a hydraulic or pneumatic cylinder.
  • the force element is connected in a first end region via a rotary joint 9 with the housing 6 and connected in a second end region via a rotary joint 8 with the locking element 2.
  • the locking element 2 is rotatably mounted in the housing 6. By actuation of the force element 5, the locking element 2 can rotate about the axis of rotation 7 and thereby moved into the housing 6 and out of the housing 6, so as to be transferred into a locking or Entarretier- position.
  • the locking element has two teeth, a first tooth 21 and a second tooth 22, which are in a locking position with a respective first latching unit 41 and a second latching unit 42 of a detent engaged.
  • Fig. 3 shows a side view of a scissor lift to which the locking device according to the invention is used for example.
  • the locking mechanism 1 is mounted on a first component 11, namely on a laterally displaceable upper end of a scissor bar.
  • the detent element 3 is mounted on a second component 12.
  • the first component 11, the scissors spar is rotatably connected at its lower end to a third component 13, a foundation or a base plate.
  • the second component 12 is a holder which is firmly connected to the detent element 3 and to a fourth component 14, such as a running rail.
  • a fourth component 14 such as a running rail.
  • the scissor lift shown above has from a certain starting height yl uniform, vertical distances y for locking positions, which can be approached with the lift.
  • the locking rails In order to realize these equidistant distances, the locking rails must have a different pitch of the teeth in the horizontal direction. This pitch increases with increasing lift height of the travel rail in the lateral direction, shown by the distances xn, xn + 1, xn + 2, x ..., where xn ⁇ xn + 1 ⁇ n + 2 ⁇ x ....
  • a control unit 107 can be seen in FIG. 3, which is in communication with the lifting unit 109.
  • the lifting unit is in communication with the two scissor beams of the scissor lift in such a way that, when actuated, it can spread or contract the scissor struts against each other.
  • the control unit 107 on the one hand the lifting unit 109 can be controlled, and on the other hand the force element 5 in the locking mechanism 1.
  • the control unit 107 controls the lift assembly 109 so that the lift height is raised to a height, which is substantially slightly higher than the locking position 1, but lower than a lifting height, which is composed of the value yl + 4 • y.
  • the power element 5 is controlled via the control unit, so that the teeth 21, 22 of the locking element in the recesses of the Locking units 41, 42 penetrate, wherein the locking element 2 is rotated out of the housing 5.
  • the lifting unit 109 is driven such that the running rail carries out a lowering movement and assumes the locking position 1, wherein the teeth 21 and 22 with the locking units 41 and 42 are firmly engaged.
  • the lifting unit 109 is driven so that initially a slight lifting movement is performed, the rail occupies a lifting height that is greater than the height value, which consists of yl + 3 xy, and is smaller than the height value, which results from yl + 4 xy, but at least so high that the Verrieglungselement 2 can be converted into a Entarretier ein.
  • the force element 5 of the locking mechanism is driven so that the locking element 2 is screwed into the housing 6 and thereby occupies the Entarretierzin.
  • a locking device according to the invention is provided in FIG. 3 at the laterally displaceable ends of both scissor beams, an arrangement is also conceivable in which only one scissor beam is provided with a locking device and only one guide is attached to the displaceably mounted end of the other scissor spar.
  • the locking device may optionally be in communication with the upper slidably mounted end of a scissors spar and a running rail, or be in communication between the lower laterally displaceable end of a scissor spar and a foundation.
  • FIG. 4A shows a representation of the detent element 3 in a lateral view. While the initial height yl is the Locking mechanism in a first portion 102 in which the locking element is engageable with detents 4, which have substantially equal distances from each other. When the lift is lifted above an initial value yl, the locking mechanism is in a second portion 103 in which the pitch of the detent elements, that is, the distances between two adjacent detents 4, steadily increase in the longitudinal direction of the detent element 3.
  • FIG. 4B shows an enlarged section of the second subregion 103 of the detent element 3.
  • the distances between two notches increasing in the longitudinal direction can be clearly recognized by the length values xn + 1, xn + 2, xn + 3.
  • Wm corresponds to the length of a scissor bar, the scissor lift, yl an initial height and y the fixed predefined distance between the locking positions.
  • Lo denotes the position of the first rest, which again results as a function of the starting height yl from the following formula:

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Lock And Its Accessories (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Pallets (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)

Abstract

L'invention concerne un dispositif d'arrêt destiné à arrêter, de manière libérable, des composants (11, 12) mobiles entre eux, en particulier des dispositifs de levage, comprenant un mécanisme de verrouillage (1) pouvant être monté sur un premier composant (11), au moins une unité de verrouillage (2), un élément d'encliquetage (3) pouvant être monté sur un second composant, et qui présente une pluralité d'encoches (4) de formes sensiblement identiques, dispositif caractérisé en ce que l'élément de verrouillage (2) peut être amené en prise avec au moins une encoche (4), de manière libérable, par liaison de forme et/ou par assemblage à force, et avec un élément de force (5) pour la production d'un déplacement relatif entre l'élément de verrouillage (2) et au moins une encoche (4), et en ce qu'au moins dans une zone partielle (103) de l'élément d'encliquetage (3), les encoches (4) présentent des distances différentes entre elles.
EP09745462A 2008-05-16 2009-05-15 Dispositif d'arrêt Not-in-force EP2288570B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09745462T PL2288570T3 (pl) 2008-05-16 2009-05-15 Urządzenie unieruchamiające

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008024051A DE102008024051A1 (de) 2008-05-16 2008-05-16 Arretiervorrichtung
PCT/DE2009/000700 WO2009138078A1 (fr) 2008-05-16 2009-05-15 Dispositif d'arrêt

Publications (2)

Publication Number Publication Date
EP2288570A1 true EP2288570A1 (fr) 2011-03-02
EP2288570B1 EP2288570B1 (fr) 2012-10-03

Family

ID=40996708

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09745462A Not-in-force EP2288570B1 (fr) 2008-05-16 2009-05-15 Dispositif d'arrêt

Country Status (10)

Country Link
US (1) US8770549B2 (fr)
EP (1) EP2288570B1 (fr)
JP (1) JP2011520725A (fr)
KR (1) KR101645744B1 (fr)
CN (1) CN202080854U (fr)
DE (1) DE102008024051A1 (fr)
DK (1) DK2288570T3 (fr)
ES (1) ES2392671T3 (fr)
PL (1) PL2288570T3 (fr)
WO (1) WO2009138078A1 (fr)

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Also Published As

Publication number Publication date
ES2392671T3 (es) 2012-12-12
DE102008024051A1 (de) 2009-11-19
US8770549B2 (en) 2014-07-08
EP2288570B1 (fr) 2012-10-03
WO2009138078A1 (fr) 2009-11-19
DK2288570T3 (da) 2013-01-21
KR101645744B1 (ko) 2016-08-04
US20110278517A1 (en) 2011-11-17
KR20110018900A (ko) 2011-02-24
JP2011520725A (ja) 2011-07-21
CN202080854U (zh) 2011-12-21
PL2288570T3 (pl) 2013-03-29

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