EP0407359B1 - A platform set for a mobile elevator - Google Patents

A platform set for a mobile elevator Download PDF

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Publication number
EP0407359B1
EP0407359B1 EP90830293A EP90830293A EP0407359B1 EP 0407359 B1 EP0407359 B1 EP 0407359B1 EP 90830293 A EP90830293 A EP 90830293A EP 90830293 A EP90830293 A EP 90830293A EP 0407359 B1 EP0407359 B1 EP 0407359B1
Authority
EP
European Patent Office
Prior art keywords
platform
boom
hinged
coupling element
fork
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
EP90830293A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0407359A1 (en
Inventor
Riccardo Dr. Magni
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.)
Manitou Costruzioni Industriali SRL
Original Assignee
Manitou Costruzioni Industriali SRL
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 Manitou Costruzioni Industriali SRL filed Critical Manitou Costruzioni Industriali SRL
Publication of EP0407359A1 publication Critical patent/EP0407359A1/en
Application granted granted Critical
Publication of EP0407359B1 publication Critical patent/EP0407359B1/en
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
    • B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
    • B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
    • B66F11/044—Working platforms suspended from booms
    • B66F11/046—Working platforms suspended from booms of the telescoping type

Definitions

  • the present invention concerns a platform set for a mobile elevator.
  • Such apparatus are well known in the prior art, and substantially comprise mobile cranes, or cranes mounted on vehicles, specifically structured with a boom at whose summit a platform is arranged.
  • Such apparatus although capable of performing the work assigned them, present one negative characteristic: an excessive "specialisation” deriving from the fact that they are conceived, and are therefore only utilisable, as hoists for lifting persons. Indeed, they are true and proper mobile vehicles specialised in the lifting of persons, and buying them, considering their not indifferent cost, is only justifiable when there is the certainty that they will be used adequately and render a high utilisation coefficient.
  • US-A- 4 744 718 discloses a main extendable boom on a support vehicle which boom carries at a free end an attachment plate or coupling to permit of mounting or dismounting a fork group or an extendable mast or coloumn bearing a work platform at a free end.
  • Such applications present limits in their use.
  • One such limit is constituted by the fact that in order to reach considerable heights it is necessary to mount said platforms to high-load hydraulic cranes, since the height reached by the platform is substantially linked to the load by a direct proportion ratio.
  • a further limit derives from the fact that the mounting of the platform to the boom of such cranes permits only of rather limited manoeuvrability of the platform.
  • a platform set for a mobile elevator that can be defined as a sort of mountable and dismountable accessory to the fast coupling arranged at the free extremity of the manoeuvring boom of mobile elevators, said manoeuvring boom being already arranged in such a way as to permit of mounting and dismounting fork attachments or similar used on such elevators.
  • An advantage of the present invention consists in its ability to reach a compact rest-configuration whose total volume is extremely small.
  • fig. 1 represents a mobile elevator (1), mobile on wheels (2), on whose frame (3) is fixed a telescopic manoeuvring boom (4).
  • the manoeuvring boom (4) is hinged to the frame (3) by means of a pivot (5) with horizontal axis parallel to the axes of the wheels (2).
  • the rotations of the manoeuvring boom (4) about the axis of the pivot (5) and thus the lifting and lowering of the same manoeuvring boom (4) are realised by means of a hydraulic jack (26) operating between the frame (3) and the manoeuvring boom (4).
  • a fast coupling (6) is arranged in such a way as to permit of rapid mounting and dismounting of the fork group or similar usually utilised for the lifting of loads.
  • a coupling element (7) is directly mounted, to which a platform boom (9) is hinged by means of a pivot (8).
  • Said platform boom (9) is telescopically extendable and has hinged to its other, fork-shaped extremity, a platform (10).
  • the platform boom (9) and the coupling element (7) are fixed one to the other by means of two hydraulic cylinders (11, 12) which are located in diametrically opposite positions with regard to the pivot (8) and on the same plane perpendicular to the axis of the pivot (8).
  • the ends of the stems of the two hydraulic cylinders (11, 12) are hinged to two pivots (21, 22) arranged on the platform boom (9).
  • the bases of the two hydraulic cylinders (11, 12) are instead hinged on two pivots (31, 32) fixed to the coupling element (7).
  • the reciprocal positions of the hydraulic cylinders (11, 12) and their fixture to the coupling element (7) and to the platform boom (9) are made in such a way as to permit of 90° rotation of the platform boom (9) on both sides, starting from the central position indicated by A in fig. 3.
  • the movements of the manoeuvring boom (4) add to the above-described possibilities of manoeuvre of the platform set for mobile elevator (1), since the platform set is mounted to the manoeuvring boom's (4) free end.
  • the platform boom (9) is telescopically extendable, comprising of at least two segments (14, 15) activated by means of a hydraulic cylinder (16) arranged coaxially to the said segments (14, 15).
  • the free extremity of segment (15) is symetrically fork-shaped, with the platform (10) hinged between its prongs.
  • the platform (10) can easily be moved into an infinity of positions, including positions not normally accessible to the usual platforms in the prior art.
  • the invention has the positive characteristic of being very compact when in the rest configuration, and therefore taking up relatively very little space.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Jib Cranes (AREA)
EP90830293A 1989-07-07 1990-06-27 A platform set for a mobile elevator Expired - Lifetime EP0407359B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT4011289 1989-07-07
IT8940112A IT1234635B (it) 1989-07-07 1989-07-07 Gruppo cestello porta persone per elevatore semovente

Publications (2)

Publication Number Publication Date
EP0407359A1 EP0407359A1 (en) 1991-01-09
EP0407359B1 true EP0407359B1 (en) 1994-03-09

Family

ID=11248338

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90830293A Expired - Lifetime EP0407359B1 (en) 1989-07-07 1990-06-27 A platform set for a mobile elevator

Country Status (4)

Country Link
EP (1) EP0407359B1 (it)
DE (1) DE69007189T2 (it)
ES (1) ES2051500T3 (it)
IT (1) IT1234635B (it)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1257272B (it) * 1992-11-06 1996-01-10 Merlo Ind Metalmecc Attrezzo per la movimentazione aerea di navicelle, e macchina operatrice universale provvista di tale attrezzo.
GB9408781D0 (en) * 1994-05-04 1994-06-22 Caterpillar Inc Work vehicle
DE29604905U1 (de) * 1996-03-16 1996-05-30 Decker, Alexander, 65549 Limburg Arbeitsbühnen-Nivellierungs-System
DE29815527U1 (de) * 1998-08-31 2000-01-27 Bauunternehmen Echterhoff Gmbh Arbeitsplattform
ITRE20050006A1 (it) * 2005-02-02 2006-08-03 Sandrino Ferrarini Autocarro o veicolo simile provvisto di un braccio di supporto di una pittaforma aerea semovente

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3374901A (en) * 1965-05-06 1968-03-26 Ferwerda Ray Live boom supporting live boom or hoist track
DE2116842A1 (de) * 1970-04-08 1971-10-21 J Tranchero Fahrbarer, zum Aufbau auf Kraftfahrzeuge bestimmter Kran mit drei hydraulisch gesteuerten Hebestufen
DE2515562A1 (de) * 1975-04-10 1976-10-21 Weber Maschf Alfred W Vorsatzgeraet fuer gabelstapler
GB1537771A (en) * 1976-12-14 1979-01-04 Simon Eng Dudley Ltd Access equipment
US4185427A (en) * 1978-06-01 1980-01-29 Reach-All Manufacturing & Engineering Co. Double cylinder over-center aerial device
US4314622A (en) * 1980-03-26 1982-02-09 Lindquist William W Extension boom for tractors having back hoe attachments
US4744718A (en) * 1984-03-06 1988-05-17 Gleason Cranes (Vic.) Pty. Ltd. Aircraft service vehicle

Also Published As

Publication number Publication date
DE69007189D1 (de) 1994-04-14
IT1234635B (it) 1992-05-26
IT8940112A0 (it) 1989-07-07
EP0407359A1 (en) 1991-01-09
DE69007189T2 (de) 1994-06-16
ES2051500T3 (es) 1994-06-16

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