EP0407359A1 - A platform set for a mobile elevator - Google Patents

A platform set for a mobile elevator Download PDF

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Publication number
EP0407359A1
EP0407359A1 EP90830293A EP90830293A EP0407359A1 EP 0407359 A1 EP0407359 A1 EP 0407359A1 EP 90830293 A EP90830293 A EP 90830293A EP 90830293 A EP90830293 A EP 90830293A EP 0407359 A1 EP0407359 A1 EP 0407359A1
Authority
EP
European Patent Office
Prior art keywords
platform
boom
coupling element
hinged
mobile elevator
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
EP90830293A
Other languages
German (de)
French (fr)
Other versions
EP0407359B1 (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.
  • 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) arrange 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)

Abstract

The present invention relates to a platform set for mobile elevator (1).
It consists of a platform boom (9) hinged to a coupling element (7) mountable to (and dismountable from) a fast coupling (6) for fork groups or similar, located at the extremity of the manoeuvring boom (4) of a mobile elevator (1)

Description

  • 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.
  • Also in the prior art there are devices with platforms mountable to hydraulic crane booms. 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. To this must be added the negative fact that in order to support and move the platform, the base machinery used is very expensive since it was originally conceived for other and much heavier uses, and as a result is in the final analysis not economically well-exploited in relation to its characteristics and work-potential.
  • The present invention, as described in the claims which follow, obviates the disadvantages and lacks of the prior art in a particularly simple and economical way by proposing 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.
  • Further advantage derives from the fact that for the movement of the platform-carrying boom it uses the fork-traversing cylinder forming part of the original base machinery.
  • Further characteristics and advantages will better emerge from the detailed description which follows of a preferred but not exclusive embodiment of said invention, illustrated here purely in the form of a non-limiting example in the accompanying illustrations, in which:
    • - Figure 1 shows a schematic side-view;
    • - Figure 2 shows, schematically and in small scale, the manoeuvring possibilities with reference to some fundamental positions between the two extremes;
    • - Figure 3 shows, in large scale, a particular of Figure 2;
    • - Figure 4 shows a left side-view of a part of Figure 3.
  • With reference to the figures, 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).
  • At the extremity of the last segment of 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.
  • On the fast coupling (6), instead of the usual fork group or similar, 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). In particular, 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. To this possibility of movement, which is obtainable only through the activating of the two hydraulic cylinders (11, 12), must be added the movement possibilities obtainable by the manoeuvring of the fast coupling (6) which can be rotated around the pivot (13). Obviously also 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. Furthermore, the platform boom (9) is telescopically extendable, comprising of at least two segments (14, 15) activated by means of a hydraulic cylinder (16) arrange 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.
  • Thanks to its great capacity of movement, 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.
  • Further to the advantage of permitting of reaching high elevation, the invention has the positive characteristic of being very compact when in the rest configuration, and therefore taking up relatively very little space.

Claims (3)

1) Platform set for mobile elevator (1) comprising a telescopic manoeuvring boom (4) hinged at its lower extremity to the frame (3) of the elevator and provided with a fast coupling (6) at its upper extremity to permit of the mounting and dismounting of a fork group or similar, having:
- a coupling element (7) for attaching to or detaching from said fast coupling (6);
- a platform boom (9) bearing hinged to its free extremity the platform (10), and being hinged at its other end to said coupling element (7);
being equipped with hydraulic activating means functioning between said coupling element (7) and said platform boom (9) aimed at producing rotation of the platform boom (9) with respect to the coupling element (7).
2) Platform set for mobile elevator as in claim 1, wherein said hydraulic activating means comprise two hydraulic cylinders (11, 12) located in diametrically opposite positions with regard to the pivot (8) of the hinge by means of which said coupling element (7) and said platform boom (9) are constrained and are on the same plane perpendicular to the axis of said pivot (8).
3) Platform set for mobile elevator as in claim 1 wherein said platform boom (9) is extendable and comprises a plurality of segments (14) and (15) arranged telescopically and activated hydraulically, the last of which segments, eg. (15), being symetrically fork-shaped, with said platform (10) being hinged between its prongs.
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
IT8940112A IT1234635B (en) 1989-07-07 1989-07-07 GROUP OF BASKET FOR PEOPLE FOR SELF-PROPELLED ELEVATOR
IT4011289 1989-07-07

Publications (2)

Publication Number Publication Date
EP0407359A1 true EP0407359A1 (en) 1991-01-09
EP0407359B1 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 (en)
DE (1) DE69007189T2 (en)
ES (1) ES2051500T3 (en)
IT (1) IT1234635B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0596498A1 (en) * 1992-11-06 1994-05-11 Merlo S.P.A. Industria Metalmeccanica Fixture for overhead control of platform lifts, and all-purpose machine fitted with such a fixture
EP0680923A1 (en) * 1994-05-04 1995-11-08 Caterpillar Inc. Work machine
EP0802154A2 (en) * 1996-03-16 1997-10-22 Alexander Decker Leveling-system for working plateforms
DE29815527U1 (en) * 1998-08-31 2000-01-27 Bauunternehmen Echterhoff Gmbh Work platform
EP1688386A2 (en) * 2005-02-02 2006-08-09 Sandrino Ferrarini Lorry comprising a boom for a movable platform

Citations (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
FR2085928A1 (en) * 1970-04-08 1971-12-31 Tranchero Jacques
FR2306930A1 (en) * 1975-04-10 1976-11-05 Weber Maschf Alfred W Forklift truck attachment - comprises self levelling working platform on telescopic boom derricking on fork slide
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

Patent Citations (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
FR2085928A1 (en) * 1970-04-08 1971-12-31 Tranchero Jacques
FR2306930A1 (en) * 1975-04-10 1976-11-05 Weber Maschf Alfred W Forklift truck attachment - comprises self levelling working platform on telescopic boom derricking on fork slide
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

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0596498A1 (en) * 1992-11-06 1994-05-11 Merlo S.P.A. Industria Metalmeccanica Fixture for overhead control of platform lifts, and all-purpose machine fitted with such a fixture
EP0680923A1 (en) * 1994-05-04 1995-11-08 Caterpillar Inc. Work machine
EP0802154A2 (en) * 1996-03-16 1997-10-22 Alexander Decker Leveling-system for working plateforms
EP0802154A3 (en) * 1996-03-16 1999-09-08 Alexander Decker Leveling-system for working plateforms
DE29815527U1 (en) * 1998-08-31 2000-01-27 Bauunternehmen Echterhoff Gmbh Work platform
EP1688386A2 (en) * 2005-02-02 2006-08-09 Sandrino Ferrarini Lorry comprising a boom for a movable platform
EP1688386A3 (en) * 2005-02-02 2007-06-06 Sandrino Ferrarini Lorry comprising a boom for a movable platform

Also Published As

Publication number Publication date
IT8940112A0 (en) 1989-07-07
ES2051500T3 (en) 1994-06-16
IT1234635B (en) 1992-05-26
DE69007189T2 (en) 1994-06-16
EP0407359B1 (en) 1994-03-09
DE69007189D1 (en) 1994-04-14

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