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EP1661490B1 - Table régable en hauteur à pieds croisés - Google Patents

Table régable en hauteur à pieds croisés Download PDF

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Publication number
EP1661490B1
EP1661490B1 EP05111340A EP05111340A EP1661490B1 EP 1661490 B1 EP1661490 B1 EP 1661490B1 EP 05111340 A EP05111340 A EP 05111340A EP 05111340 A EP05111340 A EP 05111340A EP 1661490 B1 EP1661490 B1 EP 1661490B1
Authority
EP
European Patent Office
Prior art keywords
lever
platform
leg
scissor
scissor 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.)
Expired - Lifetime
Application number
EP05111340A
Other languages
German (de)
English (en)
Other versions
EP1661490A1 (fr
Inventor
Ernst Langewellpott
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1661490A1 publication Critical patent/EP1661490A1/fr
Application granted granted Critical
Publication of EP1661490B1 publication Critical patent/EP1661490B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, 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
    • B66F7/00Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/065Scissor linkages, i.e. X-configuration
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47BTABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B9/00Tables with tops of variable height
    • A47B9/16Tables with tops of variable height with means for, or adapted for, inclining the legs of the table for varying the height of the top, e.g. with adjustable cross legs

Definitions

  • the present invention relates to a scissors lift table with a platform which can be spaced from the ground by pivoting in front of below the platform arranged Scherengliedem.
  • a generic scissor lift table is from the DE 199 16 509 known, in which the scissor members, which are connected to each other at a common axis of rotation, are pivoted against each other by means of a spindle drive, which is between the legs of the scissor members, which are adjacent to the platform, and these can move towards each other.
  • a spindle drive which is between the legs of the scissor members, which are adjacent to the platform, and these can move towards each other.
  • This lever is also hinged to a second rocker arm, the other end is hinged to the upper leg of that scissor member on which the spreader 40 is guided, but in a region between spreader 40 and the common axis of rotation.
  • the known lever arrangement that the Spreader is supported via a V-shaped lever assembly on the underlying portion of the other scissor member.
  • a scissor lift table with at least one pair of scissor members 20, 30 and a platform 1 arranged above it, in which the pair of scissor members 20, 30 is connected to one another rotatably in a common axis of rotation 2.
  • the description refers to a pair of scissor members, but preferably two of which are arranged parallel to each other below the platform and several can be arranged behind each other, so that in each case a pair of scissor members is articulated with its first ends to the second ends of a further pair of scissor members ,
  • An expansion body 40 is arranged displaceably on a first guide track, which is located on the upper leg 31.
  • the expansion body 40 is drivable in the direction of the upper leg 21 movable.
  • the movable drive of the expansion body 40 in the direction of the upper leg 21 can be realized by a known spindle drive with motor 42 and spindle 41 which is disposed between the upper leg 21 and the spreader 40 to the distance between spreader 40 and the point of application 23rd of the spindle drive on the upper leg 21 to change.
  • the point of application 23 on the upper leg 21 can be designed as a pivotable mounting.
  • the spindle nut is preferably included in the expansion body 40, in which the spindle 41 is rotatably mounted.
  • a spindle drive moves the expansion body 40 toward or away from the point of application 23, the point of application 23 being arranged in the region of the upper leg 21 of the scissor member 20 or being indirectly connected thereto, for example by attachment to the platform, so that when moving the spreader 40 by rotation of a spindle which is guided in a spindle nut of the spreader 40, spreader 40 and point 23 can be moved toward or away from each other.
  • the spreader 40 is drivable by at least one belt drive in the direction of the point of application 23 drivable.
  • Such a belt drive is controlled by a motor drive shortened and extendable, for example, by a motor-driven worm gear that is controllable to the belt by means of driven rollers on or unwind.
  • a motor drive shortened and extendable for example, by a motor-driven worm gear that is controllable to the belt by means of driven rollers on or unwind.
  • the length of the belt 43 controlled between spreader 40 and point 23 can be shortened or extended, while the motor drive between point 23 and spreader 40 may be arranged, or the belt may be connected via a first guide roller 44, which is arranged in the point of application 23, and a second deflection roller 45, which is arranged in the region of the common axis of rotation 2, to be deflected and be shortened and extendable by a motor drive, which is arranged on the lower leg 32.
  • the expansion body 40 is articulated at a first end 51 of a first lever 50, the second end 52 of this first lever 50 being articulated at a first end 61 of a second lever 60.
  • the second end 62 of the second lever 60 is slidably guided on a second guide track 34 which is arranged on the lower leg 32 of the second scissor member 30.
  • the second guideway 34 is located above the second end 62, i. between the second end 62 and platform 1, so that the second end 62 runs from below against the second guide track 34.
  • the second lever 60 is pivotally mounted on the lower leg 22 in its pivot point 63. This pivot point 63 is disposed between the first end 61 and the second end 62 of the second lever 60.
  • first lever 50 which is arranged between spreader 40 and second lever 60, wherein the lever 60 is articulated on the lower leg 22 in the pivot point 63, causes the forces required when lifting or lowering the platform 1, the forces between spreader 40 and attack point 23 are to be reduced and are about the same size over the entire pivoting range.
  • This uniform force relationships between open and closed state of the scissor members 20 and 30 with raised or lowered platform 1 result in the inventive scissor lift table from the fact that the second pivot arm 60 as an additional lever between the second guide track on the lower leg 32 and the first Lever 50 acts around its pivot point 63, so that the first lever 50 supports the expansion body 40 to move the upper leg toward each other when a force between spreader 40 and point 23 acts and these moves toward each other.
  • the first guide track 33 is designed in its upper portion 33A, which is arranged in the direction of the upper leg 31, in the form of a curved upward curve in the direction of the platform, while its lower portion 33B, which in the direction of the has common axis of rotation 2, approximately in a straight line parallel or at a shallow angle inclined to the upper leg 31 is designed.
  • the second guide track 34 on the lower leg 32 may be approximately straight, approximately parallel to the lower leg 32, or at a slight angle thereto.
  • the second guideway 34 in the form of a cam control in an upper portion 34A facing towards the common axis of rotation 2 has an arcuate course directed towards the platform 1 facing towards the bottom, i. to the side facing away from the platform 1 of the lower leg 32 is open and concave and the second end 62 of the second lever 60 slidably receives, while an adjacent lower portion 34 B of the second guide track 34 in the direction away from the common axis of rotation 2 approximately parallel to the lower Leg 32 may be linear or may have a curved course, which bulges slightly convex towards the bottom.
  • a particularly favorable lever ratio is made possible in particular when lifting the platform from the lowermost position, since the second end 62 of the second pivot lever 60 in the upper portion 34A of the second guideway 34 is displaceable, so that with little movement the upper legs 21 and 31 to each other to substantially no change in position of the second end 62 of the second lever 60 takes place.
  • the first lever 50 in this position the movement of the spreader 40 particularly favorable on the first guide track 33, while in a further raised state of the platform 1, the second end 62 of the second lever 60 in the lower portion 34 B of the second guide track 34 passes , so now the movement of the lower leg 32 down, ie opposite the platform 1 causes its first end 61 to move upwards, i. is pivoted in the direction of the platform 1, so that the first lever 50 transmits this upward movement on the spreader 40 on.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Sowing (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Knitting Machines (AREA)
  • Sewing Machines And Sewing (AREA)

Claims (8)

  1. Table élévatrice à ciseaux dotée d'une plateforme (1), d'un premier et d'un second leviers (50, 60) et d'au moins une paire d'éléments en ciseaux (20, 30), dont le premier élément en ciseaux (20) présente une extrémité supérieure (21) et une extrémité inférieure (22) et dont le second élément en ciseaux (30) présente une extrémité supérieure (31), une extrémité inférieure (32) et deux rails de guidage (33, 34), les extrémités supérieures (21, 31) étant adjacentes à la plateforme (1) et les extrémités inférieures (22, 32) étant en regard des extrémités supérieures (21, 31), et les premier et second éléments en ciseaux (20, 30) étant montés pivotants autour d'un axe de rotation commun (2), et d'un corps écarteur (40), qui est guidé sur le rail de guidage (33) disposé à l'extrémité supérieure (31) du second membre en ciseaux (30), le corps écarteur (40) étant mobile par entraînement en direction d'un point d'attaque (23), qui est disposé sur l'extrémité supérieure (21) du premier élément en ciseaux (20), caractérisée par le fait que le corps écarteur (40) est articulé à une première extrémité (51) du premier levier (50), et la seconde extrémité (52) du premier levier (50) est articulée à la première extrémité (61) du second levier (60), dont la seconde extrémité (62) est guidée coulissante sur le second rail de guidage (34) qui est disposé sur une branche inférieure (32) du second élément en ciseaux (30), le second levier (60) pouvant pivoter autour d'un point de pivotement (63), qui est disposé sur la branche inférieure (22) du premier élément en ciseaux (20).
  2. Table élévatrice à ciseaux selon la revendication 1, caractérisée par le fait que le second levier (60) est mesuré de telle sorte que sa première extrémité (61), au moins dans l'état dans lequel le corps écarteur (40) et le point d'attaque (23) se situent à la plus grande distance possible l'un de l'autre, ne fait pas saillie de son point de pivotement (63) au-delà de l'élément écarteur.
  3. Table élévatrice à ciseaux selon la revendication 1 ou 2, caractérisée par le fait que le second rail de guidage (34) présente une portion supérieure (34A), qui est disposée en direction de l'axe de rotation commun (2) et qui présente un tracé en forme d'arc dirigé vers la plateforme (1), qui est ouvert et concave par rapport au côté de la branche inférieure (32) détourné de la plateforme (1) et une seconde portion (34B), qui est disposée dans la direction détournée de l'axe de rotation commun (2), qui est conçue de manière pratiquement linéaire et à peu près parallèle à la branche inférieure (32).
  4. Table élévatrice à ciseaux selon la revendication 3, caractérisée par le fait que la seconde section (34B) du second rail de guidage (34) présente un tracé en forme d'arc, qui se renfle de manière convexe en direction de la partie inférieure (1) détournée de la plateforme.
  5. Table élévatrice à ciseaux selon l'une des revendications précédentes, caractérisée par le fait que l'élément écarteur (40) est mobile à l'aide d'un entraînement à broche contre la partie inférieure du premier rail de guidage (33) détournée de la plateforme (1) et en direction du point d'attaque (23) sur la branche supérieure (21) du premier élément en ciseaux (20), qui présente un écrou de broche dans l'élément écarteur (40), une broche (41) y pivotant en son intérieur et un moteur (42) reliée avec celle-ci.
  6. Table élévatrice à ciseaux selon l'une des revendications 1 à 4, caractérisée par le fait que le corps écarteur (40) est mobile par l'intermédiaire d'une courroie (43) contre la partie inférieure détournée de la plateforme (1) du premier rail de guidage (33) et en direction du point d'attaque (23) sur la branche supérieure (21) du premier élément en ciseaux (20).
  7. Table élévatrice à ciseaux selon la revendication 6, caractérisée par le fait que la courroie (43) est guidée autour d'une première poulie de renvoi (44) et d'une seconde poulie de renvoi (45), la seconde poulie de renvoi (45) étant disposée à distance de l'axe de rotation commun (2) soit sur la branche supérieure (21) ou sur la branche inférieure (32) soit avec une poulie de renvoi (45 et 45') sur les deux de ces branches (21 et 32).
  8. Table élévatrice à ciseaux selon l'une des revendications 6 ou 7, caractérisée par le fait que la courroie (43) peut être rallongée ou raccourcie à l'aide d'une commande par entraînement moteur.
EP05111340A 2004-11-25 2005-11-25 Table régable en hauteur à pieds croisés Expired - Lifetime EP1661490B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004057055A DE102004057055A1 (de) 2004-11-25 2004-11-25 Scheren-Hubtisch

Publications (2)

Publication Number Publication Date
EP1661490A1 EP1661490A1 (fr) 2006-05-31
EP1661490B1 true EP1661490B1 (fr) 2010-06-16

Family

ID=35768633

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05111340A Expired - Lifetime EP1661490B1 (fr) 2004-11-25 2005-11-25 Table régable en hauteur à pieds croisés

Country Status (3)

Country Link
EP (1) EP1661490B1 (fr)
AT (1) ATE471092T1 (fr)
DE (2) DE102004057055A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2897049B1 (fr) * 2006-02-09 2008-05-09 Mathieu Tep Table elevatrice a pietements articules.
US8967057B2 (en) 2012-11-02 2015-03-03 South Essex Fabricating Inc. Vertically adjustable platform system
WO2016126913A1 (fr) * 2015-02-04 2016-08-11 Affinity Tool Works, Llc Établi mobile pliable et socle de support d'outil
US9961989B2 (en) 2016-03-07 2018-05-08 Marc Stefan Witt Radial scissor lift table and method
CN119036411A (zh) * 2024-08-02 2024-11-29 哈尔滨工业大学 一种直线驱动的多自由度的升降平台

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4585212A (en) * 1984-12-07 1986-04-29 International Business Machines Corporation Lift device of the scissor-jack type
DE3502641A1 (de) * 1985-01-26 1986-07-31 Mannesmann AG, 4000 Düsseldorf Scherenhubvorrichtung
US4858888A (en) * 1988-07-11 1989-08-22 Onelio Cruz Platform lifting mechanism
DE19526596B4 (de) * 1995-07-21 2004-12-16 Pro Hub Hebetechnik Gmbh Scherenhubtisch
DK69898A (da) * 1998-05-20 1999-11-21 Hans Balle Christensen Løftemekanisme
DE19916509C1 (de) * 1999-04-13 2001-01-04 Langewellpott Eva Maria Scheren-Hubtisch mit einer Plattform zur Aufnahme von zu hebenden Gegenständen

Also Published As

Publication number Publication date
EP1661490A1 (fr) 2006-05-31
DE102004057055A1 (de) 2006-06-01
ATE471092T1 (de) 2010-07-15
DE502005009750D1 (de) 2010-07-29

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