EP0483100A2 - Vorrichtung zum Heben von Lasten oberhalb einer Grube - Google Patents

Vorrichtung zum Heben von Lasten oberhalb einer Grube Download PDF

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Publication number
EP0483100A2
EP0483100A2 EP91870169A EP91870169A EP0483100A2 EP 0483100 A2 EP0483100 A2 EP 0483100A2 EP 91870169 A EP91870169 A EP 91870169A EP 91870169 A EP91870169 A EP 91870169A EP 0483100 A2 EP0483100 A2 EP 0483100A2
Authority
EP
European Patent Office
Prior art keywords
jack
pit
rollers
driven
longitudinal guide
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
EP91870169A
Other languages
English (en)
French (fr)
Other versions
EP0483100B1 (de
EP0483100A3 (en
Inventor
Robert H. Jans
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
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0483100A2 publication Critical patent/EP0483100A2/de
Publication of EP0483100A3 publication Critical patent/EP0483100A3/fr
Application granted granted Critical
Publication of EP0483100B1 publication Critical patent/EP0483100B1/de
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
    • B66F7/10—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks
    • B66F7/16—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by one or more hydraulic or pneumatic jacks
    • B66F7/18—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by one or more hydraulic or pneumatic jacks by a single central jack

Definitions

  • the present invention relates to a device for lifting loads above a pit, in particular a device intended for lifting vehicles or parts thereof by means of a jack above a pit, more particularly above what is called a lubrication pit.
  • the drawback associated with pit jacks of the prior art resides in the fact that the operation takes place on the jack itself, making it necessary for the user of the jack to be in the immediate vicinity of the jack, which which can put the safety of the person in question in dangerous situations, for example, when the load is not balanced on the jack.
  • the present invention relates to a device for lifting vehicles, respectively spare parts thereof, using a jack above a maintenance pit, which does not have the aforementioned drawbacks which are linked to a classic pit jack.
  • the invention relates to a device for lifting loads above a pit, characterized in that it consists of a combination of a longitudinal guide, of an element which can be moved along longitudinal guide, drive means capable of being controlled in order to move the element along the longitudinal guide, as well as a jack mounted on the aforementioned element.
  • the aforementioned element is equipped with a second element which can perform a transverse movement relative to the first element, so that the jack can be moved both in the longitudinal direction and in the direction transverse to the pit.
  • the invention as described above has the advantage that the personnel in charge of the operation no longer has to move the jack by hand, but can simply control it, for example, by pressing a button. even when the jack is heavily loaded.
  • the device according to the invention is also provided with a remote control, which offers several advantages, inter alia the fact that the user can operate the jack from the most suitable place and that the we can work faster, more precisely, with more security and more efficiency.
  • the device is provided with drive means capable of being controlled, the jack operator must no longer always be in the immediate vicinity of the jack in order to be able to use it, which represents additional security. .
  • he can monitor his work from being nearby. In the case of precision work, such as mounting a gearbox in a truck, this feature is an important advantage.
  • the drive means are hydraulically controlled, which makes it possible to obtain significant drive forces, while in this case, it is nevertheless possible to provide very precise positioning, for example, by means of '' a suitable servo system with flow control, so much so that the speed of all movements can be regulated.
  • the present invention by its concept, offers a very effective device for each modern maintenance and repair workshop.
  • the invention relates to a device 1 for lifting a load 2 above a pit 3.
  • this device 1 mainly consists of a combination of a longitudinal guide 4, of an element 5 which can be moved along the longitudinal guide 4 in the longitudinal direction L, of drive means 6 able to be controlled and intended to move the element 5 along the guide element 4 and a jack 7 mounted on the element 5.
  • the aforementioned longitudinal guide 4 consists of two rails 8 and 9 which are each arranged on one side of the pit 3 and which, preferably, have an inverted U-shaped profile.
  • the rails 8 and 9 can be mounted against the side walls of an existing pit, for example, as shown in the figures, or they can, according to a variant not shown, be supported by a frame which is installed completely in a pit existing.
  • the aforementioned element 5 consists of a carriage which, as shown in FIG. 3, is capable of rolling along the rails 8 and 9 by means of four rollers 10 to 13.
  • the aforementioned drive means 6 mainly consist of a motor 14 which drives the aforementioned rollers 10 to 13.
  • grooves 15 have been made, as shown in FIGS. 3 to 5, in which movable cables 16 can run and wind up over the entire length of the pit 3.
  • the motor 14 drives only one roller, respectively 10 and 11, on each side of the element 5.
  • the rollers 12 and 13 are fixed freewheel to the element 5.
  • cables 16 are fixed to the ends of the pit 3. They are tensioned so that a controlled slip can occur when excessive forces are exerted with respect to the longitudinal movement.
  • the transmission between the motor 14 and the rollers 10 and 11 preferably takes place by means of a series of toothed wheel transmissions.
  • a toothed wheel 18 is arranged on the shaft 17 of the motor 14, which drives a third toothed wheel 20 by means of a second toothed wheel 19, the toothed wheel 20 being mounted on the shaft 21 of the roller 10.
  • the toothed wheel 19 is arranged on a shaft 22 which transmits the rotary movement from one side to the other of the element 5 able to move.
  • the shaft 22 drives a toothed wheel 23 which, in turn, engages in a toothed wheel 24 which is mounted on the shaft 25 of the roller 11. It is clear that the rollers 10 and 11 are driven with the same angular velocity.
  • the jack 7 consists of a lifting cylinder 26 provided with a piston or a plunger 27, which can perform a vertical movement V.
  • the aforementioned element 5 capable of moving in the longitudinal direction is provided with a second element 28 capable of moving, for example a carriage, this element 28 being able to effect a transverse movement D over the width of the pit 3 .
  • the element 5 is provided with two transverse profiles 29 and 30 over which the second element 28 can move back and forth.
  • the drive of the second element 28 takes place by means a motor 31, a transmission 32 and two threaded rods 33 and 34 which cooperate with nuts 35 and 36 which are fixed to the element 28.
  • the threaded rods 33 and 34, as well as the nuts 35 and 36 are located on both sides of the element 28, which allows to obtain a symmetrical stress.
  • the transmission 32 is preferably made up of a chain transmission formed by, on the one hand, a first chain pinion 37 which is arranged on the shaft 38 of the motor 31, a second chain pinion 39 which is arranged on the threaded rod 33 and a chain 40 disposed between the chain sprockets 37 and 39, and on the other hand, chain sprockets 41 and 42 arranged on the threaded rods 33 and 34, as well as a chain 43 by which the two threaded rods 33 and 34 are coupled to each other.
  • the motors 14 and 31 are hydraulic motors. Preferably, they are mounted on the element 28 and they are controlled by a hydraulically controlled mechanism.
  • This control mechanism includes a series of valves 44-46 which control the different movements. Valves 44 and 45 supply the engines 14 and 31 using an oil passage. The valve 46 provides the oil passage necessary to control the jack 7.
  • all the speeds, respectively those of the motors 14 and 31 and those of the piston 27, are adjustable.
  • a flow regulator 47 is placed before the valves 44-45 which regulates the oil volume.
  • the flow regulator 47 is put into service by the intervention of a servosystem 48.
  • the maneuver itself takes place remotely by means of a remote control 49 indicated diagrammatically in FIG. 2, in which there are the various pressure buttons intended for the different work functions.
  • the assembly is supplied hydraulically by means of a permanently mounted pumping group 50, provided with a control cabinet. All the hydraulic and electrical conduits necessary for the control of the mobile elements are guided by the intervention of an articulated channel or of a coil chain 51 in the direction of the element 28.
  • the coil chain 51 takes place in a conduit or over a support 52 which is fixed in a longitudinal direction to one side of the pit 3.
  • Valves 44-46 are electrically controlled by means of solenoids.
  • the electrical system on element 5 operates, for safety reasons under low voltage, for example 24 volts.
  • the lifting cylinder 26 is preferably equipped with eccentric valves for precise operation and with rupture safety devices with coils for the purpose of protection against loads.
  • the frame of the element 5 can have various shapes. Preferably, it is kept as simple as possible. Consequently, in the example shown, it consists mainly only of transverse sections 29 and 30 and side plates 53 and 54. In its lower part, covers 55 or the like are welded for reinforcing purposes, while the can be provided, on its upper side, removable covers not shown to protect the assembly against impacts and objects. The construction of the upper covers is such that the penetration of dirt and water is excluded.
  • the element 28 has side plates 56 and 57 which are constructed so that the element 28 cannot tilt in the event of significant transverse forces.
  • the pumping unit 50 When the latter is put into service, the pumping unit 50 is first actuated. By pressing the correct push button disposed on a remote control 49, each of the valves 44-45 can be opened and the 'Oil supply in the desired flow direction.
  • the servo system 48 with the flow regulator 47 which also receive orders from the control remotely 49, ensure that the oil is conveyed at the desired rate.
  • the piston 27 of the double-acting lifting cylinder 26 can be adjusted in height very precisely.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Types And Forms Of Lifts (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
EP19910870169 1990-10-26 1991-10-23 Vorrichtung zum Heben von Lasten oberhalb einer Grube Expired - Lifetime EP0483100B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9001023 1990-10-26
BE9001023 1990-10-26

Publications (3)

Publication Number Publication Date
EP0483100A2 true EP0483100A2 (de) 1992-04-29
EP0483100A3 EP0483100A3 (en) 1993-03-10
EP0483100B1 EP0483100B1 (de) 1995-12-20

Family

ID=3884989

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910870169 Expired - Lifetime EP0483100B1 (de) 1990-10-26 1991-10-23 Vorrichtung zum Heben von Lasten oberhalb einer Grube

Country Status (2)

Country Link
EP (1) EP0483100B1 (de)
DE (2) DE483100T1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008047089A1 (de) * 2008-09-12 2010-03-18 Maha Maschinenbau Haldenwang Gmbh & Co. Kg Fernbedienung für Hebebühne für Kraftfahrzeuge

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1849777A (en) * 1931-03-30 1932-03-15 Weaver Mfg Co Vehicle lift
FR825358A (fr) * 1936-11-19 1938-03-02 élévateur pour véhicules
DE926932C (de) * 1951-01-13 1955-04-25 Konrad Becker Hebebuehne fuer Kraftfahrzeuge
US3018902A (en) * 1955-12-06 1962-01-30 Manning Maxwell & Moore Inc Hydraulic crane
GB910542A (en) * 1960-10-13 1962-11-14 Castrol Equipment Ltd Improvements in or relating to power operated hydraulic jacks
CH407473A (de) * 1964-03-03 1966-02-15 Peter Ag Konrad Hebeeinrichtung für Motorfahrzeuge
US4422619A (en) * 1981-07-21 1983-12-27 Griffiths Edward E Remote valve operating system
EP0312206A2 (de) * 1987-09-11 1989-04-19 V.L. Churchill Limited Fahrzeughebevorrichtung
DE9003459U1 (de) * 1990-03-24 1990-05-31 Slift Hebezeug GmbH, 7533 Tiefenbronn Hebebühne

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1849777A (en) * 1931-03-30 1932-03-15 Weaver Mfg Co Vehicle lift
FR825358A (fr) * 1936-11-19 1938-03-02 élévateur pour véhicules
DE926932C (de) * 1951-01-13 1955-04-25 Konrad Becker Hebebuehne fuer Kraftfahrzeuge
US3018902A (en) * 1955-12-06 1962-01-30 Manning Maxwell & Moore Inc Hydraulic crane
GB910542A (en) * 1960-10-13 1962-11-14 Castrol Equipment Ltd Improvements in or relating to power operated hydraulic jacks
CH407473A (de) * 1964-03-03 1966-02-15 Peter Ag Konrad Hebeeinrichtung für Motorfahrzeuge
US4422619A (en) * 1981-07-21 1983-12-27 Griffiths Edward E Remote valve operating system
EP0312206A2 (de) * 1987-09-11 1989-04-19 V.L. Churchill Limited Fahrzeughebevorrichtung
DE9003459U1 (de) * 1990-03-24 1990-05-31 Slift Hebezeug GmbH, 7533 Tiefenbronn Hebebühne

Also Published As

Publication number Publication date
DE483100T1 (de) 1993-01-14
EP0483100B1 (de) 1995-12-20
EP0483100A3 (en) 1993-03-10
DE69115644D1 (de) 1996-02-01
DE69115644T2 (de) 1996-06-20

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