EP0473239B1 - Fahrzeughebevorrichtung - Google Patents

Fahrzeughebevorrichtung Download PDF

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Publication number
EP0473239B1
EP0473239B1 EP91202202A EP91202202A EP0473239B1 EP 0473239 B1 EP0473239 B1 EP 0473239B1 EP 91202202 A EP91202202 A EP 91202202A EP 91202202 A EP91202202 A EP 91202202A EP 0473239 B1 EP0473239 B1 EP 0473239B1
Authority
EP
European Patent Office
Prior art keywords
wheels
carriage
lifting device
column
vehicle
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.)
Revoked
Application number
EP91202202A
Other languages
English (en)
French (fr)
Other versions
EP0473239A2 (de
EP0473239A3 (en
Inventor
Jan Willem Fijnvandraat
Jan Berends
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.)
Stertil BV
Original Assignee
Stertil BV
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=19857596&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0473239(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Stertil BV filed Critical Stertil BV
Priority to AT91202202T priority Critical patent/ATE92431T1/de
Publication of EP0473239A2 publication Critical patent/EP0473239A2/de
Publication of EP0473239A3 publication Critical patent/EP0473239A3/en
Application granted granted Critical
Publication of EP0473239B1 publication Critical patent/EP0473239B1/de
Anticipated expiration legal-status Critical
Revoked 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
    • B66F7/04—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms suspended from ropes, cables, or chains or screws and movable along pillars hydraulically or pneumatically operated

Definitions

  • the invention relates to a vehicle lifting device as defined in the introductory part of claim 1.
  • a lifting device with two of such columns positioned opposite to one another is known from GB-A-2 045 204.
  • a lifting device of this kind has the advantage of occupying less space and a better accessibility of the underside of the vehicle lifted with the lifting device.
  • the columns are made from thick metal plate.
  • guide wheels highly accurate rolar bearings are used.
  • Other known lifting devices use columns of less thick metal plate but provided with separate rail profiles which are welded fixedly in the columns and with which accurately machined metal guide wheels on the carriage co-act. Owing to the heavy construction and the accuracy required, the construction of the known two-column vehicle lifting devices is expensive.
  • the invention now has for its object to provide a vehicle lifting device of the type described in the preamble which can be manufactured more simply and therefore more economically.
  • the height of the columns of the known vehicle lifting devices is limited to about 2.5 metres. Applicant has realised however that there is essentially no objection to making the columns considerably higher and that hereby the carriages can likewise be embodied considerably higher. This provides the advantage that the load of the guide wheels can be greatly limited, whereby the wheels can bear directly on the plate metal of the columns, which can be relatively thin plate metal, so that the manufacturing costs of the lifting device according to the invention are reduced without affecting the stability and security of the device.
  • the reaction forces exerted by the guide wheels as a result of the load of the bearing arms are so small that the wheels can run directly on the folded metal plate of the columns without special provisions, especially to the material of which the wheels are made.
  • the step of claim 2 is preferably applied. Due to the invention these reaction forces are also so small that simple and thus inexpensive slide pieces can suffice.
  • a very simple assembly is achieved when the wheels are axially slidable on the shaft stumps and the slide pieces have a collar axially enclosing the wheels. Since the slide pieces are themselves also enclosed in the columns, a simple securing or clamp fitting of the slide pieces in the shaft stumps or the wheels can be sufficient.
  • the step of claim 5 can be advantageously applied.
  • claims 6 and 7 are preferably applied.
  • Fig. 1 shows a partially broken away perspective view of an embodiment of a vehicle lifting device according to the invention.
  • Fig. 2 shows on a larger scale a partially broken away view according to arrow II in fig. 1.
  • Fig. 3 shows a simplified section according to III in fig. 2.
  • the vehicle lifting device 1 according to the invention shown in fig. 1 comprises two hollow columns 2 of sturdy steel plate, which have a substantially C-profile as shown particularly in fig. 3. Each column 2 thus has a channel 4 on one side.
  • Each column 2 is fixedly welded onto a base plate 11 which is anchored in the ground using bolts 12.
  • each hollow column 2 Received into each hollow column 2 is a vertically movable carriage 3 which is provided at its bottom end and top end with guide wheels 5 and 6 respectively.
  • the basic body of the carriage 3 consists of a U-profile. The construction is such that the body of the U-profile of the carriage 3 lies in the channel 4 of the column 2 such that it lies in one plane with the profile parts of the column 2 adjoining the channel 4.
  • each carriage 3 On the bottom end each carriage 3 bears a support construction 7 which protrudes outside the column 2 and to which two bearing arms 8 are pivotally mounted. Integrated into the swivel bearings 10 is an arresting mechanism which can lock the relevant arm 8 in a chosen swivel position. Situated on the end of an extensible portion of each arm 8, which is not further shown in fig. 1, is a carrier 9, the top surface of which can grip a support on the bottom of a vehicle for lifting up. To lift a vehicle the arms 8 are swivelled into such a position and extended so far until all four carriers 9 of the lifting device 1 are situated under a relevant support of the vehicle so that the vehicle can be lifted by the simultaneous movement of the two carriages 3 in both columns 2.
  • the lifting device 1 For synchronous upward movement of the carriages 3 the lifting device 1 is provided with drive means.
  • these drive means comprise a hydraulic jack 14 mounted in the left-hand column 2 in fig. 1.
  • the cylinder 15 of this jack 14 is fixedly connected to the carriage 3 and the piston rod 16 is fixedly connected at its top end to the column 2.
  • the piston rod 16 has a central bore 36 to the outer end of which is connected a hydraulic oil feed 17.
  • hydraulic oil under pressure is pressed via the feed 17 and the bore 36 above the piston into the cylinder 14 whereby the cylinder 14 and therefore the carriage 3 are moved upward.
  • This chain transmission comprises a chain 19 which is fixedly mounted on a support 18 forming an entity with the carriage 3.
  • the chain 19 extends downward from this support 18 and runs around a chain wheel 20 that is rotatable about a shaft connected to the column 2.
  • the chain From the chain wheel 20 the chain extends upward via a chain wheel 21 at the top of the left-hand column 2 through a cross beam 13 mutually joining both columns 2 at their top ends, over a chain wheel 22 at the top of the right-hand column 2 to the right-hand carriage 3.
  • the end of the chain 19 is fixedly connected to the carriage 3 by means of a safety construction 23 not further shown in fig. 2.
  • This safety construction 23 is embodied such that if the chain 19 should break the rod 24 mounted fixedly in the column 2 is gripped immediately, thus preventing the right-hand carriage 3 from falling downward.
  • a safety device which, during normal use, also prevents undesired downward movement of the carriages 3, for example as a result of a leakage in the hydraulic jack 14.
  • This safety device comprises a hole strip 27 mounted fixedly in the left-hand column with which a ratchet 28 co-acts that is connected pivotally to the left-hand carriage 3 by means of a shaft 29.
  • the ratchet 28 is embodied such that it allows an upward movement but in the case of downward movement grips into a hole in the hole strip 27.
  • the ratchet 28 can be rotated round the shaft 29 in counter-clockwise direction as seen in fig. 2 by an electromagnet 30.
  • This electromagnet 30 is activated when the control device, which is not described further here, receives a command to lower the lifting device.
  • the described chain transmission ensures that both carriages 3 run synchronously unless, as described, the chain breaks.
  • the right-hand carriage 3 is then instantaneously locked on the rod 24.
  • Chain breakage is moreover detected by a switch means, not further described here, and this switch means generates a signal to the control device whereby the lifting or lowering movement is immediately ended.
  • this switch means generates a signal to the control device whereby the lifting or lowering movement is immediately ended.
  • the mentioned switch means likewise detects when the chain 19 becomes slack. This can occur when during lowering the right-hand carriage is obstructed by a support or the like accidentally left behind under the device. The lowering movement will in this case also be switched off immediately.
  • These safety devices are otherwise generally per se known.
  • Another per se known safety device is a sensor wire 37 arranged directly beneath the cross beam 13 which activates a switch as soon as the wire 37 is pressed upward, for example by the roof of a vehicle. To prevent damage through contact with the cross beam 13 the lifting movement is then immediately switched off.
  • the columns 2 of the lifting device 1 have a height such that an automobile can be lifted to a height such that for example a vehicle mechanic can stand upright under the lifted vehicle.
  • This lifting height lies in the order of magnitude of 2 metres.
  • the column height 2 is equal to the sum of this lifting height and the maximum height of a vehicle for lifting with the lifting device.
  • each column has a height in the order of magnitude of 3.5 metres.
  • the carriages 3 can hereby have a height in the order of magnitude of 1.5 metres whereby the reaction forces of the wheels 5, 6 in the columns 2 remain very limited as a result of the load on the bearing arms 8.
  • the wheels can hereby run directly on the plate material of the column profiles.
  • the profile of the column 2 in the embodiment shown has U-shaped parts 25, 26 connected on either side of the channel 4 with the open sides facing each other. These U-shaped parts 25, 26 form the wall parts in which the wheels can run.
  • the wheels 6 are solid wheels of a polyamide type which has good running qualities.
  • the solid wheels 6 are mounted on shaft stumps 32 welded fixedly to the U-profiles of the carriages 3.
  • the wheels 6 are pushed onto the shaft stumps 32 and are each secured by a collar 34 of a slide piece 33 placed with a light grip fitting into a cylindrical recess in the head end of the shaft stumps 32.
  • the slide pieces lie against the connecting wall of each of the U-shaped profile parts 25, 26, or against the oppositely lying wall parts of the column 2.
  • the slide pieces 33 take up the reaction forces in the axial direction of the wheels 5, 6 and thus simultaneously secure the wheels 5, 6 on the relevant shaft stumps.
  • the slide pieces 33 are preferably manufactured from a suitable wear-resistant plastic such as HD-polythene.
  • the invention is not limited to the embodiment shown in the figures.
  • another shape can for instance be chosen for the profile of the columns 2 and the construction of the carriage 3 and the running wheels and slide pieces can be embodied differently.
  • a wheel can be made as one entity with a slide piece from a suitable material such as an oil-filled nylon.
  • the drive means for the carriages also have many variation possibilities. Since the columns have a height such that they reach as far as the height of the top of a raised vehicle, it is favourable to employ a cross beam 13 in the manner shown through which for example a chain of the drive means can run. It is also possible however to accommodate a desired connection for the drive means in a threshold.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Handcart (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Vehicle Body Suspensions (AREA)

Claims (7)

  1. Fahrzeughubvorrichtung (1) mit wenigstens einer Hohlsäule (2), die aus Metallblech gebogen und mit einem Längskanal (4) versehen ist, in dem ein mit Führungsrädern (5, 6) versehener Wagen (3) vertikal bewegbar ist, an dessen unterem Ende Tragarme (8) zum Abstützen eines Fahrzeuges über den Kanal befestigt sind, die sich seitwärts zu der Säule (2) erstrecken, und mit Antriebsmitteln zum Aufwärtsbewegen des Wagens (3) in der Säule (2) zu einer oberen Hubposition, in welcher unter einem von den Tragarmen gehaltenen Fahrzeug Raumhöhe geschaffen ist, wobei die Säule (2) ein Profil mit U-förmigen Teilen (25, 26) aufweist, die auf jeder Seite des Kanals (4) mit den offenen Seiten einander zugewandt angeordnet sind, und wobei die Führungsräder (5, 6) am Wagen (3) ein Paar Räder (6) im Bereich des oberen Endes und ein Paar Räder (5) im Bereich des unteren Endes des Wagens umfassen und die Räder jedes Paares direkt in einem der U-förmigen Profilteile (25, 26) laufen, dadurch gekennzeichnet, daß die Säule (2) eine Höhe hat, die bis zur Höhe des höchsten Punktes eines Fahrzeuges in Hubposition reicht, und daß der Wagen (3) eine Höhe entsprechend der Fahrzeughöhe hat.
  2. Hubvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß Gleitstücke (33) vorgesehen sind, die außerhalb der Räder (6) in Axialrichtung vorstehen und mit der Verbindungswand jedes der U-förmigen Profilteile (25, 26) zusammenwirken.
  3. Hubvorrichtung nach Anspruch 2, dadurch gekenn- zeichnet, daß die Räder drehbar auf Wellenstümpfen (32) gelagert sind, die an dem Wagen (3) befestigt sind, und daß die Gleitstücke (33) am Kopfende der Wellenstümpfe (32) angeordnet sind.
  4. Hubvorrichtung nach Anspruch 3, dadurch gekenn- zeichnet, daß die Räder (5, 6) auf den Wellenstümpfen (32) axial verschiebbar sind, und daß die Gleitstücke (33) einen Kragen (34) aufweisen, der die Räder (5, 6) axial sichert.
  5. Hubvorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die Räder (5, 6) massive Räder auf Kunststoff sind.
  6. Hubvorrichtung nach Anspruch 5, dadurch gekenn- zeichnet, daß das Material der Räder (5, 6) Polyamid ist oder enthält.
  7. Hubvorrichtung nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß die Gleitstücke (33) aus HD-Polythen sind.
EP91202202A 1990-08-29 1991-08-29 Fahrzeughebevorrichtung Revoked EP0473239B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT91202202T ATE92431T1 (de) 1990-08-29 1991-08-29 Fahrzeughebevorrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9001899A NL9001899A (nl) 1990-08-29 1990-08-29 Auto-hefbrug.
NL9001899 1990-08-29

Publications (3)

Publication Number Publication Date
EP0473239A2 EP0473239A2 (de) 1992-03-04
EP0473239A3 EP0473239A3 (en) 1992-03-25
EP0473239B1 true EP0473239B1 (de) 1993-08-04

Family

ID=19857596

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91202202A Revoked EP0473239B1 (de) 1990-08-29 1991-08-29 Fahrzeughebevorrichtung

Country Status (5)

Country Link
EP (1) EP0473239B1 (de)
AT (1) ATE92431T1 (de)
DE (2) DE9116587U1 (de)
ES (1) ES2036167T3 (de)
NL (1) NL9001899A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105060162A (zh) * 2015-08-12 2015-11-18 安徽江威精密制造有限公司 升降机构

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20202362U1 (de) * 2002-02-15 2002-04-18 MAHA Maschinenbau Haldenwang GmbH & Co. KG, 87490 Haldenwang Hubstempelanordnung für Hebebühnen
US20120325587A1 (en) * 2011-06-21 2012-12-27 Matthews Jason E Vehicle Lift With Front Platforms And Rear Carrying Arms

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH252873A (fr) * 1946-03-14 1948-01-31 Villars Julio Dispositif de levage.
FR1098557A (fr) * 1953-10-23 1955-08-08 Simmons Ind Perfectionnements aux élévateurs pour automobiles
AU470742B2 (en) * 1972-04-18 1976-03-25 Molnar Frank Vehicle service hoist
DE2556691C3 (de) * 1975-12-16 1980-07-24 Otto Nussbaum Kg, Fertigungstechnik Und Maschinenbau, 7640 Kehl Fördervorrichtung, insbesondere zum Heben von Lasten
GB2045204B (en) * 1979-03-30 1983-01-12 Villars J Lifting apparatus
US4500071A (en) * 1982-09-03 1985-02-19 Bagwell Bobby F Dual hydraulic lifts
GB2226006B (en) * 1988-12-02 1992-04-29 Bruce Roland Tigwell Lifting assembly.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105060162A (zh) * 2015-08-12 2015-11-18 安徽江威精密制造有限公司 升降机构

Also Published As

Publication number Publication date
ES2036167T1 (es) 1993-05-16
DE9116587U1 (de) 1993-02-18
ES2036167T3 (es) 1993-12-01
EP0473239A2 (de) 1992-03-04
NL9001899A (nl) 1992-03-16
EP0473239A3 (en) 1992-03-25
ATE92431T1 (de) 1993-08-15
DE69100223D1 (de) 1993-09-09
DE69100223T2 (de) 1993-11-25

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