EP1181467B2 - Table elevatrice a compas - Google Patents

Table elevatrice a compas Download PDF

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Publication number
EP1181467B2
EP1181467B2 EP00920582A EP00920582A EP1181467B2 EP 1181467 B2 EP1181467 B2 EP 1181467B2 EP 00920582 A EP00920582 A EP 00920582A EP 00920582 A EP00920582 A EP 00920582A EP 1181467 B2 EP1181467 B2 EP 1181467B2
Authority
EP
European Patent Office
Prior art keywords
scissor
lifting
drive shaft
lift table
drive
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
EP00920582A
Other languages
German (de)
English (en)
Other versions
EP1181467B1 (fr
EP1181467A1 (fr
Inventor
Gerold Heckert
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.)
Heckert Gerold
Original Assignee
Individual
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Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7907534&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1181467(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of EP1181467A1 publication Critical patent/EP1181467A1/fr
Application granted granted Critical
Publication of EP1181467B1 publication Critical patent/EP1181467B1/fr
Publication of EP1181467B2 publication Critical patent/EP1181467B2/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 according to the preamble of claim 1, as known from DE 34 27 742 A1 evident.
  • FIG. 1 Another scissor lift is in the DE 90 05 566 U1 described.
  • This scissor lift two side of a support device in the form of a platform and a frame-shaped base unit arranged parallel to each other scissors for raising and lowering the platform by opening and closing the scissors are provided.
  • the opening and closing of the scissors is produced by moving a lifting carriage or pallet truck guided between lateral longitudinal struts of the base unit back and forth with laterally arranged lifting curves running obliquely on the upper side under rollers arranged in the region of the scissors axis.
  • To move the lifting this is driven by a threaded spindle.
  • Such a spindle is a precision part and usually runs ball-bearing in a spindle nut.
  • Such a spindle drive is not only relatively expensive, but also sensitive to lateral forces and vibrations, so that the run disturbed and the spindle drive can be damaged.
  • an actuator with rollers is arranged substantially horizontally at the level of the shear axis of rotation.
  • the rollers cooperate with arranged on the scissor arms cams, wherein the roller axles are moved parallel in the center plane by an actuator.
  • the actuator is a hydraulic Hubkolbenantrieb indicated with cylinder.
  • Such a hydraulic actuator usually leads to a jerky start and stop the lifting movement and can also cause unwanted oily deposits, for example on a surface to be painted and is therefore often undesirable.
  • the invention has for its object to provide a scissor lift of the type mentioned above, with which the lifting movement is controlled without risk of contamination and reliably executable.
  • a favorable structure for a reliable function is that the drive shaft is fixedly mounted on the base unit and that at least one deflecting element, which is / are rotatably mounted on a fixed distance to the drive shaft, arranged parallel to this axis of rotation / are for deflecting the traction means is provided.
  • the reliability of the drive device further contributes to the fact that several, e.g. three or four timing belts and a number of corresponding number of deflection elements are provided.
  • the measures are provided that the timing belt formed a top strand and a Untertrumm and that the truck is coupled to the upper strand.
  • the measures are advantageous in that the drive has a gear portion with hollow shaft stub, in which a matched end portion of the drive shaft is inserted.
  • the maintenance is facilitated by the fact that the drive is attached laterally outside the base unit to this and is provided with a brake and a torque arm.
  • a favorable structure for the function is that two parallel inner leg and two parallel outer leg are mounted on both sides of the base unit and the support device and that the lift truck is rolling or sliding supported on the inner legs, while at least one outer leg to open and close the scissors for the lifting movement an example replaceable lift curve is provided, via which the stroke movement can be determined.
  • the drive shaft is arranged in the region of a base-side pivot axis of the inner leg, while the axis of rotation of the deflecting elements is arranged in the region of the inner legs on the opposite side of the scissor shaft from the drive shaft, the pallet truck is safe on the inner legs to perform the lifting movement led to the end positions.
  • the measures are further favorable that the lift truck has to support the inner legs two pairs of offset in the direction of the rollers and to cooperate with the lifting curves a pair of lifting rollers.
  • An altematic structure of the scissor lift table consists e.g. in that the pallet truck is slidably mounted on the base unit and carries a pair of lift curves aligned on both sides in the direction of movement, which cooperate with a pair of lifting rollers rolling thereon, which are fixedly mounted on two opposite legs of the scissors or the scissors axis.
  • a drive 1 is arranged in the form of an electric motor, which is coupled to a brake 1.2 and is secured against rotation with a torque arm 2.
  • a drive shaft 3 is used, which is partially provided with a toothing on its outer side.
  • the drive shaft 3 is in the region of the lower pivot axis of the inner leg 12 of the pair of scissors 11 rotatably fixed to longitudinal struts or cross struts or separate support elements of the base unit 17 in rotary bearings 15.
  • toothed belt wheels 5 which on one of the drive shaft 3 seen from opposite side Scissor axis 16, are mounted on the inner legs 12 arranged axis of rotation.
  • the drive shaft 3, the scissors axis 16 and the axis of rotation of the deflecting elements 5 are parallel to each other.
  • the toothed belt wheels 5 each have lateral flanges, so that the one upper strand and a lower strand forming toothed belt 4 are guided reliably.
  • the toothed belt wheels 5 may be formed on a common shaft or axle and, if desired, also be provided with teeth.
  • a pallet truck 6 is arranged, which is fixed at clamping points 8 with clamping means on the four toothed belt 4.
  • the clamping points 8 are provided with adjustable in the direction of rotation clamping means 8 at least on one side.
  • the toothed belt 4 are clamped with its two ends to the clamping points 8.
  • the pallet truck 6 is supported with support rollers 7 either on the upper edge of the inner leg 12 or laterally mounted on the inner legs 12, preferably interchangeable rails, wherein two pairs of laterally opposite support rollers 7 are provided, which are spaced in the direction.
  • the lift truck 6, a pair of laterally opposite lifting rollers 9, which roll under the two outer legs 13 in their relation to the scissors axis 16 upper leg portion Hubkurven 10 during a movement of the lift truck 6.
  • the lifting cam 10 can be designed according to a desired time profile of the lifting movement, so that, for example, the lifting movement starts slowly, accelerates and runs slowly again.
  • the lifting curve may also be shaped at its ends so that no further lifting movement results towards the end of the movement of the lifting carriage 6, so that an exact final height of the carrying device 14, for example in the region of a transfer station to a transverse conveyor belt is clearly achieved.
  • the lifting carriage 6 is moved with the drive 1 via the drive shaft 3 and the toothed belt 4 in the desired direction and up to the desired position.
  • the position adjustment can be monitored or controlled by means of position detectors. With the brake 1.2 while an unintentional downhill stroke is avoided. Should a toothed belt 4 tear, the lifting operation can be provisionally continued with the remaining toothed belt 4 until a suitable opportunity for renewing the damaged toothed belt 4 results.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Handcart (AREA)
  • Types And Forms Of Lifts (AREA)
  • High-Pressure Fuel Injection Pump Control (AREA)
  • Gears, Cams (AREA)
  • Transmission Devices (AREA)

Claims (9)

  1. Table élévatrice à compas avec des compas (11) disposés entre un dispositif porteur (14) et une unité de base (17) qui présentent une branche intérieure (12) et une branche extérieure (13) pivotant l'une par rapport à l'autre autour d'un axe de compas (16) et avec un dispositif de levage qui présente un chariot élévateur (6) mobile en va-et-vient au moyen d'un entraînement (1) pour ouvrir et fermer les compas (11), un arbre moteur (3) dirigé parallèlement à l'axe des compas (16) étant accouplé à l'entraînement (1), par lequel au moins un organe de traction (4) monté autour de celui-ci et accouplé au chariot élévateur (6) est mobile dans les deux directions de rotation et l'organe de traction étant au moins une courroie crantée (4) en forme de bande et que l'arbre moteur (3) porte sur sa surface périphérique, au moins par zones, une denture coopérant avec la denture de la au moins une courroie crantée (4), caractérisée en ce que plusieurs courroies crantées (4) en forme de bandes parallèles sont utilisées comme organe de traction, en ce que les courroies crantées (4) forment chacune un brin supérieur et un brin inférieur, en ce que le chariot élévateur (6) est accouplé au brin supérieur et en ce que les courroies crantées (4) présentent deux extrémités qui sont toutes les deux fixées au chariot élévateur (6), au moins un emplacement de fixation (7, 8) présentant un dispositif de tension.
  2. Table élévatrice à compas selon la revendication 1, caractérisée en ce que l'arbre moteur (3) est monté fixe en position sur l'unité de base (17) et qu'au moins un élément de renvoi (5), qui est monté à rotation sur un axe de rotation monté à distance de l'arbre fixe moteur (3), parallèlement à celui-ci, est prévu pour le changement de direction des courroies crantées (4).
  3. Table élévatrice selon la revendication 1 ou 2, caractérisée en ce qu'un nombre d'éléments de renvoi (5) correspondant au nombre de courroies crantées (4) est prévu pour ces dernières.
  4. Table élévatrice à compas selon l'une quelconque des revendications précédentes, caractérisée en ce que l'entraînement (1) présente une section d'engrenage avec un moignon d'arbre creux dans lequel est enfoncée une section d'extrémité adaptée de l'arbre moteur.
  5. Table élévatrice à compas selon l'une des revendications précédentes, caractérisée en ce que l'entraînement (1) est fixé latéralement à l'extérieur de l'unité de base (17) sur celle-ci et est muni d'un frein (1.2) et d'un support de couples de rotation (2).
  6. Table élévatrice à compas selon l'une des revendications précédentes, caractérisée en ce que deux branches intérieures (12) parallèles et deux branches extérieures (13) parallèles sont montées des deux côtés sur l'unité de base (17) et le dispositif moteur (14) et que le chariot élévateur (6) est en appui à roulement ou à glissement sur les branches intérieures (12), tandis qu'une came de levage (10), par laquelle le déplacement de levée peut être déterminé, est prévue sur au moins une branche extérieure (13) pour ouvrir et fermer les compas (11) pour le déplacement de levée.
  7. Table élévatrice à compas selon l'une des revendications précédentes, caractérisée en ce que l'arbre moteur (3) est disposé dans la zone d'un axe de pivotement du côté base de la branche intérieure (12), tandis que l'axe de rotation des éléments de renvoi (5) est disposé dans la zone de la branche intérieure (12) sur le côté de l'axe de compas (16) opposé en partant de l'arbre moteur (3).
  8. Table élévatrice à compas selon l'une des revendications précédentes, caractérisée en ce que le chariot élévateur (6) présente deux paires de rouleaux décalés en direction de déplacement pour l'appui sur les branches intérieures (12) et une paire de rouleaux de levage (9) pour coopérer avec les cames de levage (10).
  9. Table élévatrice à compas selon l'une des revendications 1 à 5, caractérisée en ce que le chariot élévateur (6) est monté à glissement sur l'unité de base (17) et porte une paire de cames de levage alignées des deux côtés en direction de déplacement, qui coopèrent avec une paire de rouleaux de levage roulant dessus qui sont montés en position fixe sur deux ailes opposées des compas (11) ou de l'axe de compas (16).
EP00920582A 1999-05-08 2000-03-25 Table elevatrice a compas Expired - Lifetime EP1181467B2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19921435 1999-05-08
DE19921435A DE19921435A1 (de) 1999-05-08 1999-05-08 Scherenhubtisch
PCT/EP2000/002657 WO2000068596A1 (fr) 1999-05-08 2000-03-25 Table elevatrice a compas

Publications (3)

Publication Number Publication Date
EP1181467A1 EP1181467A1 (fr) 2002-02-27
EP1181467B1 EP1181467B1 (fr) 2002-12-04
EP1181467B2 true EP1181467B2 (fr) 2007-10-03

Family

ID=7907534

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00920582A Expired - Lifetime EP1181467B2 (fr) 1999-05-08 2000-03-25 Table elevatrice a compas

Country Status (7)

Country Link
US (1) US6705238B1 (fr)
EP (1) EP1181467B2 (fr)
JP (1) JP2002544094A (fr)
AT (1) ATE229139T1 (fr)
DE (3) DE19921435A1 (fr)
ES (1) ES2185587T5 (fr)
WO (1) WO2000068596A1 (fr)

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CN107614297B (zh) * 2015-05-26 2021-05-07 埃索欧耐迪克超动力 使用磁流变流体离合器装置的动态运动控制系统
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CN206390562U (zh) 2016-09-23 2017-08-11 廖良成 电动升降电脑桌及其办公桌
US11019920B2 (en) 2016-09-23 2021-06-01 Varidesk, Llc Electrically-lifted computer desk and office desk thereof
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CN109380873A (zh) * 2018-10-12 2019-02-26 中国环境管理干部学院 一种思政用可移动演说台
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Also Published As

Publication number Publication date
ES2185587T3 (es) 2003-05-01
DE29910744U1 (de) 1999-11-04
WO2000068596A1 (fr) 2000-11-16
ES2185587T5 (es) 2008-03-16
DE50000879D1 (de) 2003-01-16
ATE229139T1 (de) 2002-12-15
EP1181467B1 (fr) 2002-12-04
DE19921435A1 (de) 2000-11-16
EP1181467A1 (fr) 2002-02-27
US6705238B1 (en) 2004-03-16
JP2002544094A (ja) 2002-12-24

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