EP1184332B1 - Pont élévateur de véhicule - Google Patents

Pont élévateur de véhicule Download PDF

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Publication number
EP1184332B1
EP1184332B1 EP01117665A EP01117665A EP1184332B1 EP 1184332 B1 EP1184332 B1 EP 1184332B1 EP 01117665 A EP01117665 A EP 01117665A EP 01117665 A EP01117665 A EP 01117665A EP 1184332 B1 EP1184332 B1 EP 1184332B1
Authority
EP
European Patent Office
Prior art keywords
lifting platform
column
prime mover
platform according
shaft
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
EP01117665A
Other languages
German (de)
English (en)
Other versions
EP1184332A1 (fr
Inventor
Winfried Rauch
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 EP1184332A1 publication Critical patent/EP1184332A1/fr
Application granted granted Critical
Publication of EP1184332B1 publication Critical patent/EP1184332B1/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
    • B66F7/02—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms suspended from ropes, cables, or chains or screws and movable along pillars

Definitions

  • the invention relates to vehicle lifts of the type specified in the preamble of claims 1 and 6 respectively.
  • Such lifts are used in workshops, inspection companies, etc. for performing maintenance, repair and inspection of motor vehicles.
  • a retracted into the lift vehicle motor vehicle is raised to a height desired by the fitter to perform work on the base of the vehicle more comfortable.
  • Conventional car lifts for motor vehicles usually work on the Hubstempel850, the principle of the scissors or the rack or screw spindle principle.
  • both vertical guides are connected by a rope from the first vertical guide via a first lower pulley, formed between two uprights bottom channel, a second lower pulley in the lower part of the second stator and a third Guide roller in the upper part of the second stator to the second vertical guide runs.
  • Underground lifts for two-lane motor vehicles are known in a variety of designs, which are also used in repair and inspection operations for lifting a retracted motor vehicle.
  • These lifts regularly have a cassette that is set in a narrow pit in the ground foundation, eg embedded in concrete.
  • two lifting pistons are installed on their narrow sides, which have vehicle supports in the form of ramp-on flat carriers or of telescopic support arms at their upper ends projecting from the pit.
  • Each lifting ram is assigned a hydraulic lifting cylinder, the piston extends when pressurized and moves the associated lifting ram in stationary installed guides upwards.
  • od od flexible links such as link chains, ropes, straps.
  • tension members for lifting of e.g. Use platforms, pushers, etc. (DE 2 317 695 A, FR 1 145 939).
  • the object of the invention is to provide a technically simple lift for vehicles that can be inexpensively manufactured with low space requirements and operated with low maintenance, but also fully meets the existing safety requirements.
  • the two-stand lift according to the invention is characterized in that each provided a separate pull cord per stand is, with the use of only a single drive unit whose torque is evenly distributed to the drive links of the two similar tension cords to exert on the respective support arms equal lifting forces and ensure their synchronization.
  • This torque split is achieved in a simple manner by the shaft which extends between the uprights and is driven via a drive member coupled to the drive unit via a gear train, for example a sprocket.
  • the shaft can be arranged either at upper extensions of the two stands or at the lower end of the stand, if necessary, at or below the floor level.
  • the drive unit which can be arranged together with its transmission elements either at the upper end of a stand or at its lower part.
  • An expedient development of the invention is characterized in that the drive unit itself or an auxiliary drive can also be manually operated in order to be able to manually lower a raised vehicle in the event of a malfunction of the motorized lifting system.
  • braking devices are provided for each support arm, which are automatically activated upon occurrence of a critical operating condition, for example, at a fraction of the tension cord or at an excessive descent speed and shut down the support arms.
  • an additional synchronization control may be provided, e.g. triggers an emergency stop when the two support arms are moved at different speeds and / or are at different altitudes.
  • the so-called pulley principle can be applied, wherein the tension cord is guided over a deflection arm mounted on the support arm, via a roller mounted on the upper end of the stand or a sprocket runs and arranged on a lower end of the stator driven drum or the like is wound up.
  • the use of an endless chain as a tension member is possible.
  • the two-stand lift according to FIG. 1 is designed for two-lane vehicles, in particular cars, and has two stands 1a, 1b, which are firmly anchored in the ground foundation 3 via an associated foot 2a, 2b.
  • a horizontal support arm 4a, 4b is arranged vertically movable.
  • Each support arm 4a, 4b is telescopically extendable and has at its end a support 5a, 5b.
  • each support arm 4a, 4b is fixed to a vertical guide 6a, 6b, which in the illustrated embodiment at least partially encloses the respective uprights 1a, 1b, the length of these guides 6a, 6b being a tilt-free mounting of the support arms 4a, 4b even when the vehicle is upright and their smooth shifts guaranteed.
  • each stand 1a, 1b is a stable extension spar 7a, 7b, each with an upper bearing 8a, 8b for a transverse shaft 9, which carries a sprocket 10 at its right in Fig. 1 end.
  • a drive unit in the form of an electric motor 11 is installed, via a sprocket 12 and an over both sprockets 10 and 12 running endless chain 13 the transverse shaft 9 is set in rotary motion.
  • a tensile strand 15a, 15b which may be a steel cable, a belt or a link chain.
  • each tensile strand 15a, 15b is a steel cable which is attached at its one end via a terminal 16a, 16b to the associated vertical guide 6a, 6b and whose respective other end part is fixed to the associated disc or drum 14a, 14b ,
  • the transverse shaft 9 is rotated via the chain drive 10 to 13 together with the two discs or drums 14a, 14b, so that both tension cords 15a, 15b wound at the same speed and thereby the two support arms 4a, 4b are raised synchronously.
  • the lowering movement of the support arms 4a, 4b is expediently carried out by its own weight or the additional weight of an overlying vehicle with a predetermined speed by a brake or the electric motor 11.
  • the second stator with the additional units according to the embodiment of FIG. 1 is the same.
  • the electric motor 11 is arranged here together with the chain drive 10, 12, 13 in a box-shaped housing at the lower end of the designed as a hollow profile stand 1b.
  • the transverse shaft 9 extends in a groove formed in the base foundation 3 groove 21, which is covered by a plate 22.
  • the transverse shaft sitting non-rotatably drums, of which only the right-side drum 14b is shown here.
  • a steel cable 15b extending within the hollow profile is likewise used as a tensile strand, which is fixed at one end at 16b to the lower part of the vertical guide 6b and runs over a deflecting disc 23 rotatably mounted in the upper end region of the stator 1b, wherein the stranded part shown in dashed lines is then wound on the bottom side arranged drum 14b.
  • the so-called pulley principle can be applied in a simple manner by the one end of the traction cable 15 b is fixed in the upper part of the stator 1 b and in the longitudinal guide 6 b, a further deflection roller is arranged, via which the steel cable then runs to the upper deflection plate 23.
  • FIG. 2 requires by the elaborate in the ground foundation groove 21 and their cover an increased production cost, but has the advantage that the space between the two uprights is not limited by the transverse in the embodiment of FIG. 1 shaft 9 and the stands themselves have no extensions.
  • the underfloor lift shown in Fig. 3 has two vertical beams 25a, 25b, at the upper ends of each a horizontal support arm 4a, 4b with telescopically adjustable support 5a, 5b is attached.
  • a - schematically indicated - support frame 27 is fixed, are fixed to the guides 28a, 28b for each vertical support 25a, 25b.
  • the support frame 27 is executed with the guides 28 a, 28 b and the other units as a preassembled unit, so that it can be easily installed and anchored in the pit 26.
  • the lower ends of the two vertical beams 25a, 25b are firmly connected to each other by a dimensionally stable cross member 29, which ensures a synchronization of the vertical support in their lifting and lowering movements.
  • this cross member 29 two as steel cables 30a, 30b executed tensile cords are struck with their lower ends, each extending parallel to an associated vertical support 25a, 25b.
  • the upper ends of the steel cables 30a, 30b are fixed to a respective drum 31a, 31b, both of which are mounted on a common shaft 32 are.
  • This shaft 32 runs in end-side stationary bearings 33 a, 33 b, which may be mounted on the support frame 27.
  • To drive the shaft 32 is an electric motor 34 which is optionally mounted on the support frame 27 together with an integrated transmission and connected to the shaft 32 via a chain drive 35.
  • the pit 26 is provided with an upper cover 36.
  • the underfloor lifting platform according to FIG. 3 can also be equipped with safety or operationally suitable units, such as an electronic controller with and without position sensors, strand brake, etc.
  • the illustrated embodiments may be provided with a manually operable auxiliary drive, which allows a slow lowering of the vehicle on the foundation floor in case of failure of the electric drive unit.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Types And Forms Of Lifts (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Control And Safety Of Cranes (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Handcart (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Vehicle Body Suspensions (AREA)
  • Valve Device For Special Equipments (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)

Claims (10)

  1. Pont élévateur pour véhicules bi-voie avec
    - au moins deux montants (1a, 1b) fixement ancrés chacun dans les fondations au sol (3) par un pied (2a, 2b) correspondant à leur extrémité inférieure,
    - un guidage vertical (6a, 6b) disposé sur chaque montant (1a, 1b), non basculant et déplaçable,
    - au moins un bras de support horizontal (4a, 4b) par montant (1a, 1b), fixé sur le guidage vertical (6a, 6b) correspondant et supportant un appui (5a, 5b) à son extrémité libre,
    - un groupe d'entraînement (10 à 13) disposé sur un montant (1a), comprenant un moteur électrique (11), un engrenage (12, 13) et un tambour rotatif (14) monté sur palier,
    et
    - une ligne de traction flexible (15) dont une extrémité est fixée sur le tambour (14) et dont l'autre extrémité est fixée sur le guidage vertical (6) correspondant,
    caractérisé en ce que
    - les deux montants (1a, 1b) sont fixement reliés par un arbre (9) à leurs extrémités supérieures ou inférieures, lequel peut être entraîné par le moteur électrique (11) via l'engrenage (12, 13),
    - deux tambours (14a, 14b) sont fixés sur l'arbre (9),
    - une ligne de traction (15a, 15b) est prévue entre chaque tambour (14a, 14b) et le guidage vertical (6a, 6b) correspondant, pour le levage et l'abaissement synchrones des deux guidages verticaux (6a, 6b),
    - un dispositif de surveillance est prévu, lequel arrête le groupe d'entraînement (10 à 13) et active un dispositif de freinage en cas d'état de service anormal.
  2. Pont élévateur selon la revendication 1,
    caractérisé en ce que
    les lignes de traction flexibles (15a, 15b) sont des câbles, des courroies ou des chaînes articulés.
  3. Pont élévateur selon la revendication 1 ou 2,
    caractérisé en ce que
    le groupe d'entraînement (11) est disposé à l'extrémité supérieure d'un montant (1b), et en ce que l'arbre (9) relie entre elles les deux extrémités supérieures des deux montants (1a, 1b).
  4. Pont élévateur selon la revendication 1 ou 2,
    caractérisé en ce que
    le groupe d'entraînement (11) est disposé à l'extrémité inférieure d'un montant (1b), et en ce que l'arbre (9) est disposé sur ou dans les fondations au sol (3), la ligne de traction passant par un renvoi (23) sur l'extrémité supérieure.du montant correspondant.
  5. Pont élévateur selon l'une des revendications précédentes,
    caractérisé par
    un dispositif de freinage pour chacun des deux montants (4a, 4b), réagissant automatiquement au dépassement d'une vitesse d'abaissement prescrite d'un bras de support au moins.
  6. Pont élévateur enterré pour véhicules bi-voie avec
    - deux poutres verticales (25a, 25b) pouvant être élevées et abaissées dans une fosse (26), guidées dans des guidages fixes (28a, 28b) dans la partie supérieure de la fosse (26), et dont les extrémités inférieures sont fixement reliées entre elles par une traverse de forme rigide (29),
    - au moins un bras de support horizontal (4a, 4b) fixé à l'extrémité supérieure de chaque poutre verticale (25a, 25b), à l'extrémité libre duquel est fixé un appui mobile (5a, 5b), et
    - un groupe d'entraînement disposé dans la partie supérieure de la fosse (26), comprenant un moteur électrique (34) et un engrenage (35),
    caractérisé par
    - un arbre (32) monté sur deux paliers fixes (33a, 33b) entre les deux guidages (28a, 28b) dans la partie supérieure de la fosse (26), et accouplé à l'engrenage (26), sur lequel sont fixés deux tambours (31a, 31b),
    - deux lignes de traction flexibles (30a, 30b), chacune d'entre elles étant fixée à la traverse (29) par son extrémité inférieure et étant enroulable et déroulable sur un tambour (31a, 31b) pour le levage et l'abaissement de la traverse (29) avec les deux poutres verticales (25a, 25b), et
    - un dispositif de surveillance, lequel arrête le groupe d'entraînement (34, 35) et active un dispositif de freinage en cas d'état de service anormal.
  7. Pont élévateur selon l'une des revendications précédentes,
    caractérisé par
    une transmission d'abaissement pouvant être actionnée manuellement pour l'abaissement des bras de support (4a, 4b) lorsque le groupe moteur est désactivé.
  8. Pont élévateur selon l'une des revendications précédentes,
    caractérisé en ce que
    le dispositif de freinage comporte au moins un sabot de frein coopérant avec le guidage vertical correspondant du montant ou de la poutre verticale.
  9. Pont élévateur selon l'une des revendications précédentes,
    caractérisé en ce qu'
    un dispositif de sécurité comprend des éléments de blocage par engagement positif, tels que des axes enfichables.
  10. Pont élévateur selon l'une des revendications précédentes,
    caractérisé en ce que
    le dispositif de surveillance comporte des détecteurs de position disposés sur les montants, tels que mires à induction.
EP01117665A 2000-08-31 2001-07-25 Pont élévateur de véhicule Expired - Lifetime EP1184332B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20015061U 2000-08-31
DE20015061U DE20015061U1 (de) 2000-08-31 2000-08-31 Fahrzeug-Hebebühne

Publications (2)

Publication Number Publication Date
EP1184332A1 EP1184332A1 (fr) 2002-03-06
EP1184332B1 true EP1184332B1 (fr) 2006-06-14

Family

ID=7945892

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01117665A Expired - Lifetime EP1184332B1 (fr) 2000-08-31 2001-07-25 Pont élévateur de véhicule

Country Status (8)

Country Link
US (2) US6863159B2 (fr)
EP (1) EP1184332B1 (fr)
AT (1) ATE329877T1 (fr)
AU (1) AU2001281031A1 (fr)
CA (1) CA2419856C (fr)
DE (2) DE20015061U1 (fr)
ES (1) ES2266056T3 (fr)
WO (1) WO2002018261A1 (fr)

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Also Published As

Publication number Publication date
DE20015061U1 (de) 2001-02-22
CA2419856C (fr) 2006-07-11
DE50110121D1 (de) 2006-07-27
ES2266056T3 (es) 2007-03-01
US20040112682A1 (en) 2004-06-17
AU2001281031A1 (en) 2002-03-13
WO2002018261A1 (fr) 2002-03-07
ATE329877T1 (de) 2006-07-15
EP1184332A1 (fr) 2002-03-06
CA2419856A1 (fr) 2002-03-07
US20020023801A1 (en) 2002-02-28
US6863159B2 (en) 2005-03-08
US7028811B2 (en) 2006-04-18

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