EP0019558A1 - Scherenhebetisch mit Verschiebungsmöglichkeit - Google Patents

Scherenhebetisch mit Verschiebungsmöglichkeit Download PDF

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Publication number
EP0019558A1
EP0019558A1 EP80400694A EP80400694A EP0019558A1 EP 0019558 A1 EP0019558 A1 EP 0019558A1 EP 80400694 A EP80400694 A EP 80400694A EP 80400694 A EP80400694 A EP 80400694A EP 0019558 A1 EP0019558 A1 EP 0019558A1
Authority
EP
European Patent Office
Prior art keywords
branches
scissors
telescopic
branch
elements
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
EP80400694A
Other languages
English (en)
French (fr)
Other versions
EP0019558B1 (de
Inventor
Georges Haulotte
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.)
Creusot Loire SA
Original Assignee
Creusot Loire SA
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 Creusot Loire SA filed Critical Creusot Loire SA
Publication of EP0019558A1 publication Critical patent/EP0019558A1/de
Application granted granted Critical
Publication of EP0019558B1 publication Critical patent/EP0019558B1/de
Expired 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
    • 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
    • B66F7/0625—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement with wheels for moving around the floor
    • 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
    • B66F7/08—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement hydraulically or pneumatically operated

Definitions

  • the present invention relates to mobile or fixed devices intended for vertically lifting objects or people, and in particular to mobile devices used at airports to access airplanes with a view to loading or unloading them, the device of the invention being also of the type using two support arms hinged together in the form of scissors.
  • Apparatuses of this type currently known are constituted by a platform or a cabin linked to a generally mobile chassis, and which can be raised relative to this by means of support arms articulated together constituting Nuremberg scissors and deploying by the action of hydraulic cylinders. In this way, the platform or the cabin can rise to a certain height while remaining parallel to itself during the elevation.
  • the lifting device of the invention does not have the drawbacks of scissor lifting devices currently known. Thanks to this in fact it is possible to obtain significant elevation heights without using several pairs of scissors and also to have the possibility of translational movements without moving the supporting frame. Furthermore, with the device of the invention, all the ends of the scissors are linked to the support frame and to the platform, cabin, or other lifting member by articulations fixed in position.
  • the elevator I the invention is characterized in that it uses a pair of scissors each branch of which is made up of killed by three telescopic elements sliding one inside the other so as to develop simultaneously and of equal length, the median elements of each of said telescopic branches being linked together by a joint located at the intersection of the planes passing through the axes connecting the ends of each of said branches respectively to the supporting frame on the one hand and to the lifting member on the other hand.
  • FIG 1 we recognize a mobile scissor lifting platform consisting of a rolling frame 1, a horizontal lifting table 2, and a pair of lifting scissors 3 and 4, table 2 being in the drawing shown in the low position and in the high position.
  • the branches 3 and 4 of the scissor lift each consist of three telescopic elements (5, 6, 7) and (8, 9, 10) including the last two elements (6, 7 and 9 , 10) always develop a strictly equal length for each of them.
  • Such telescopic devices are well known, for example in the field of telescopic cranes, and an example will be described below with reference to FIG. 3.
  • the median elements (6, 9) of each of the branches (3, 4) of the pair of scissors are connected together by a horizontal axis 11 located at the intersection of the planes formed by the axes (12, 13) and (14, 15) connecting the ends of the branches (3, 4 ) respectively to the chassis 1 and to the table 2, these connecting pins being fixed in position.
  • the connecting axis 11 of the median elements (6, 9) is at equal distance, on each of the branches 3 and 4, from the connecting axis (respectively 12 and 13) to the chassis 1 and from the connecting axis (respectively 14 and 15) at the lifting table 2.
  • FIG. 2 shows the maximum position of the platform 2 assuming the branch 3 not telescoped, and therefore of minimum length l, and the branch 4 fully telescoped, of maximum length L. Furthermore, the area hatched in FIG. 2 represents the area that the platform 2 can occupy in space when the branches 3 and 4 are given all the possible lengths.
  • the device of the invention in the case of using it to raise a passenger cabin to access an aircraft for example. It is essential that such a cabin remains approximately horizontal during the maneuver or at least parallel to the plane of rest on the chassis. With the device of the invention, it is impossible that it is otherwise, as has been shown previously with reference to FIG. 2. Furthermore, the device makes it possible to cause a longitudinal movement of the raised cabin, making it possible to perfect the distance adjustment of the latter relative to the airplane.
  • FIG. 3 shows, by way of indication, a telescopic device with three elements of known type usable for the elevator of the invention.
  • This device consists of three telescopic elements (5, 6, 7) whose base element 5 is fixed and the other elements (6, 7) sliding.
  • the figure there is shown in solid lines the retracted position of the device and in phantom a partially telescoped position thereof.
  • a jack 16 having, moreover, its rod 17 fixed by an axis 18 to the last element 7.
  • a chain 19 is stretched, passing around a pulley 20 adjoining the upstream part of the middle element 6, between a point 21 secured to the downstream part of the base element 5 and a point 22 secured to the upstream part of the last element 7.
  • a chain 23 is stretched between point 22 and a point 24 secured to the downstream part of the base element 5, passing around a pulley 25 secured to the downstream part of the middle element 6.
  • the rod 17 is released from the jack 16 which, as seen in the drawing, develops the last element 7 of a length (2a) relative to the base element 5.
  • the chain 19 then drives simultaneously the development of the middle element 6 of a length (a) relative to the fixed element 5.
  • the two movable elements 6 and 7 develop of an equal length (a), the first by relative to the base element 5 and the second relative to the median element 6.
  • the chain 23 causes the simultaneous retraction and of the same length of the element 6.
  • the invention applies more particularly to mobile devices used at airports to access planes with a view to loading or unloading them.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Ladders (AREA)
  • Jib Cranes (AREA)
EP80400694A 1979-05-22 1980-05-20 Scherenhebetisch mit Verschiebungsmöglichkeit Expired EP0019558B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7913909 1979-05-22
FR7913909A FR2457248A1 (fr) 1979-05-22 1979-05-22 Elevateur-translateur a ciseaux

Publications (2)

Publication Number Publication Date
EP0019558A1 true EP0019558A1 (de) 1980-11-26
EP0019558B1 EP0019558B1 (de) 1983-11-23

Family

ID=9226055

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80400694A Expired EP0019558B1 (de) 1979-05-22 1980-05-20 Scherenhebetisch mit Verschiebungsmöglichkeit

Country Status (5)

Country Link
US (1) US4343379A (de)
EP (1) EP0019558B1 (de)
JP (1) JPS55156198A (de)
DE (1) DE3065663D1 (de)
FR (1) FR2457248A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0147919A2 (de) * 1983-11-29 1985-07-10 Kabushiki Kaisha Hikoma Seisakusho Hubgerät

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59118698A (ja) * 1982-12-24 1984-07-09 株式会社　彦間製作所 昇降装置
US4518061A (en) * 1983-04-27 1985-05-21 Economy Engineering, Inc. Translating mobile work platform
JPS6019696A (ja) * 1983-07-09 1985-01-31 株式会社彦間製作所 昇降装置
CA1310041C (en) * 1988-06-14 1992-11-10 John C. Preston Scaffolding
FR2643055B1 (fr) * 1989-02-15 1991-06-28 Gotlibowicz Elevateur autoguide
US5139110A (en) * 1990-02-02 1992-08-18 Japanic Corporation Lifting apparatus
JPH0825717B2 (ja) * 1991-08-30 1996-03-13 株式会社ジャパニック 昇降装置の同期機構
US5890864A (en) * 1997-11-06 1999-04-06 Sloan; Willie Davis Heavy-duty hay scissors lift
US6684443B2 (en) 2001-02-07 2004-02-03 United Air Lines, Inc. Multiple-door access boarding bridge
US7334804B2 (en) * 2004-03-12 2008-02-26 Mitchell Knecole A Portable tire and wheel lifting apparatus
DE102006007504A1 (de) * 2006-02-16 2007-08-30 Hydro-Gerätebau GmbH & Co. KG Hebezeuge Hebesystem
US10156080B1 (en) * 2017-07-27 2018-12-18 Joaquin Speaks Boat work platform system and corresponding methods

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2003581A (en) * 1934-09-06 1935-06-04 Jr Charles Daly Adjustable scaffold
DE1080750B (de) * 1955-05-16 1960-04-28 Wilhelm Ludowici Dr Ing Hebevorrichtung mit Nuernberger Schere
US3125235A (en) * 1964-03-17 Load lifting mechanism
DE1756770A1 (de) * 1968-07-11 1970-04-30 Trepel Kg Maschinenfabrik Hydraulisch angetriebener Hebetisch
US3598366A (en) * 1969-04-18 1971-08-10 Milwaukee Hydraulic Products C Hydraulic jacks for low head room operation
US3820631A (en) * 1973-03-08 1974-06-28 Aircraft Mechanics Platform lift mechanism
USRE29542E (en) * 1973-02-12 1978-02-21 Autoquip Corporation Power apparatus for truck loading elevator
FR2385638A1 (fr) * 1977-03-28 1978-10-27 Smith Raymond Mecanisme elevateur articule
NL7705981A (en) * 1977-05-31 1978-12-04 Verticotrans Anstalt Heavy load lifting equipment - has main hinging telescopic columns in intersecting pairs actuated by auxiliary ones

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2984072A (en) * 1959-01-12 1961-05-16 Hydraulic Engineering Inc Hydraulic jack assembly with synchronizing and flow equalizing valve mechanism

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125235A (en) * 1964-03-17 Load lifting mechanism
US2003581A (en) * 1934-09-06 1935-06-04 Jr Charles Daly Adjustable scaffold
DE1080750B (de) * 1955-05-16 1960-04-28 Wilhelm Ludowici Dr Ing Hebevorrichtung mit Nuernberger Schere
DE1756770A1 (de) * 1968-07-11 1970-04-30 Trepel Kg Maschinenfabrik Hydraulisch angetriebener Hebetisch
US3598366A (en) * 1969-04-18 1971-08-10 Milwaukee Hydraulic Products C Hydraulic jacks for low head room operation
USRE29542E (en) * 1973-02-12 1978-02-21 Autoquip Corporation Power apparatus for truck loading elevator
US3820631A (en) * 1973-03-08 1974-06-28 Aircraft Mechanics Platform lift mechanism
FR2385638A1 (fr) * 1977-03-28 1978-10-27 Smith Raymond Mecanisme elevateur articule
NL7705981A (en) * 1977-05-31 1978-12-04 Verticotrans Anstalt Heavy load lifting equipment - has main hinging telescopic columns in intersecting pairs actuated by auxiliary ones

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0147919A2 (de) * 1983-11-29 1985-07-10 Kabushiki Kaisha Hikoma Seisakusho Hubgerät
EP0147919A3 (en) * 1983-11-29 1986-07-30 Kabushiki Kaisha Hikoma Seisakusho Elevating apparatus

Also Published As

Publication number Publication date
FR2457248A1 (fr) 1980-12-19
EP0019558B1 (de) 1983-11-23
FR2457248B1 (de) 1984-09-28
DE3065663D1 (en) 1983-12-29
JPS55156198A (en) 1980-12-04
US4343379A (en) 1982-08-10

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