EP0387141A1 - Teleskopierbare Leiter mit automatischer Schwenkung seines Arbeitskorbes - Google Patents

Teleskopierbare Leiter mit automatischer Schwenkung seines Arbeitskorbes Download PDF

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Publication number
EP0387141A1
EP0387141A1 EP90400606A EP90400606A EP0387141A1 EP 0387141 A1 EP0387141 A1 EP 0387141A1 EP 90400606 A EP90400606 A EP 90400606A EP 90400606 A EP90400606 A EP 90400606A EP 0387141 A1 EP0387141 A1 EP 0387141A1
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EP
European Patent Office
Prior art keywords
ladder
basket
arrangement
movable element
carried
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.)
Withdrawn
Application number
EP90400606A
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English (en)
French (fr)
Inventor
Claude Artaud
Henri Ducruet
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.)
CAMIVA
Original Assignee
CAMIVA
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 CAMIVA filed Critical CAMIVA
Publication of EP0387141A1 publication Critical patent/EP0387141A1/de
Withdrawn legal-status Critical Current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
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C5/00—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles
    • E06C5/02—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles with rigid longitudinal members
    • E06C5/04—Ladders characterised by being mounted on undercarriages or vehicles Securing ladders on vehicles with rigid longitudinal members capable of being elevated or extended ; Fastening means during transport, e.g. mechanical, hydraulic

Definitions

  • the invention relates to telescopic ladders, of the fireman's ladder type, comprising at their end a work basket with stabilizing device keeping the basket in a correct orientation relative to the vertical whatever the inclination of the ladder.
  • the basket can be tilted backwards, then lowered until its front face comes to rest on the top of the ladder, in order to reduce the overall height and length of the transport position.
  • the object of the invention is to eliminate the above drawbacks, by making a ladder which has the advantages of compactness of the first solution, at the same time as the advantages of automation of the second, and which, moreover, does not comprises at the end of the last movable element, that the minimum actuators.
  • the invention consists in making a telescopic ladder according to the aforementioned French patent, with mechanism for tilting the work basket to move it from its working position to a transport position fitted on top of the ladder and vice versa, with as particularity that this tilting mechanism is automatic and includes an arrangement carried by the movable element, and an actuating device carried by the fixed element to cooperate with said arrangement when the ladder is in the folded state.
  • said arrangement comprises a connecting tube fixed to the base of the stabilizing actuators and coming to articulate in the end of the movable ladder in a separable manner and along an axis different from that of the support hinges
  • the device actuation comprises, on the one hand, forks of recovery of the connecting tube controlled by recovery actuators to receive and move said tube from its working position in the end of the movable member to a low position and vice versa
  • auxiliary actuators capable of coming to act on the support hinges to cause the lifting of the base articulation of the basket, the unlocking of the separable tube before the recovery by the forks, and the lowering of the basic joint after this recovery, and vice versa.
  • the entire actuating device is carried by a mobile carriage along the end of the fixed element of the ladder and pushed back towards this end by an elastic device , this carriage comprising an abutment finger cooperating with an abutment of the movable element to ensure the precise longitudinal positioning of the actuating device with respect to the arrangement of the movable element.
  • FIGS. 1 to 4 schematically represent the successive phases of the movement for the passage of the working position to transport position.
  • Telescopic ladders of the current type are generally with four elements or "planes", but, for the purpose of simplifying the description, the figures have shown only the fixed element 1 and the last mobile element 2, in therefore disregarding intermediate elements.
  • the work basket 3 is articulated at its base at 4 on support hinges 5, 5a, themselves articulated at 6 near the end of the movable element 2, so that in the position of work, the floor 7 of the basket 3 is substantially at or above the last rung of the ladder.
  • stabilizing actuators 8 arranged laterally, one on each side, substantially in line with the support hinges 5 and the uprights of the ladder, and making it possible to constantly bring the floor 7 back to the horizontal, whatever the tilting the ladder.
  • the tilting mechanism for passing the basket 3 from the working position corresponding to Figure 1 to the transport position corresponding to Figure 4 is divided into two separate parts, an arrangement 9 as small as possible carried by the end of the movable element 2, and an actuating device 10 carried by the end of the fixed element 1, these two parts being naturally arranged to cooperate with each other when the ladder is in the folded-back state, whereas on the contrary, when the ladder is in the deployed state, the two parts 9 and 10 are extremely distant from each other, thereby reducing the problems weight, inertia and shock sensitivity.
  • the arrangement 9 is carried by a support 34 which is removably attached to the end of the mobile element 2.
  • the two stabilizing actuators 8 which are generally jacks whose upper end is articulated at 11 on the basket, have their lower end joined by a tube 12 which serves as their common articulation and which has the particularity, d on the one hand, to be distinct from the axis of joints 6, unlike the previous device, and secondly, to be articulated in the end of the movable element 2 in a separable manner.
  • this separable articulation of the tube 12 in the end of the ladder can be constituted on each side by a shoe comprising a notch 13 open towards the front, in which the tube is supported, held by a locking means .
  • the branches 5a of the support hinges 5 come to bear on the tube 12 and at the same time ensure the locking thereof by means of locking notches cut in the branches 5a and of which only the useful side 14 has been shown in the figures.
  • this actuating device 10 comprises, on each side, a fork 15 for taking up the connecting tube 12, articulated at 16 and maneuvered by an actuator 17, as well as an auxiliary actuator 18 intended to act , directly or through intermediary bodies, on the branch 5 of the support hinges 5, 5a.
  • the joints 16, as well as the joints of the actuators 17 and 18, are carried by a carriage 19, movable along the end of the fixed element 1 and pushed back towards this end by a or several springs 20, this carriage comprising one or more abutment fingers 21 placed so as to be able to cooperate with one or more corresponding abutments 22 carried by the movable element 2, so that, when the ladder is folded back, the stops 22 come to meet the fingers 21 and move the carriage by compressing the spring 20, so as to ensure a rigorous relative position between this carriage and the movable element 2.
  • each articulation 16 is at a precise distance from the notch 13 corresponding and the axis of the tube 12.
  • Each of the recovery forks 15 has at its end a recovery notch 23 located at the same distance from the axis 16, so that the operation of the forks 15 by the actuators 17 naturally leads by a circular movement each of the notches 23 to fit onto the tube 12.
  • each auxiliary actuator 18 in the partially contracted state or its intermediate member has come into contact with the lever 32 subjected to a spring 33 and articulated around an axis 31.
  • This lever by means of a lock 35 immobilizes the hinges-supports 5a.
  • the actuator when it comes into contact with the lever 32 unlocks the latch 35 and releases the hinges-supports 5a. Secondly, it comes into contact with the branch 5 of the hinges-supports, ready to intervene.
  • the auxiliary actuators 18 come into action and rotate the support hinges 5, 5a around their articulation 6, which has the Indeed, to lift the joints 4, to unlock the tube 12 and to tilt the bearing 3 backwards by rotation around the axis 4 so that the center of gravity G of the basket 7 crosses the vertical passing through the axis 4. It is then possible, by releasing the thrust of the actuators 17, to allow the tube 12 to descend, along the circular path shown at 24 in Figures 3 and 4.
  • the basket tilts backwards until the upper bar of the front part 30 comes to bear on the tube 12; then the combined relaxation of the actuators 17 and 18 produces the end of the tilting, as well as the lowering and the retraction of the articulation 4 along the circular path 25.
  • each of the recovery forks 15 acts in a direction such that the reaction force on the carriage 19 constantly pushes each abutment finger 21 against its abutment 22, which justifies the use of simple springs 20 for maneuvering the carriage 19.
  • rockers to the described mechanism locking 26, articulated on the same articulation 6 as the support hinges 5 and abutting on the tube 12, and taking advantage of the differential movement which exists between these rockers 26 and the branches 5a of the support hinges 5, during the maneuvers which have just been exposed, to ensure the transmission of an automatic command to operate the gates.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Ladders (AREA)
EP90400606A 1989-03-09 1990-03-06 Teleskopierbare Leiter mit automatischer Schwenkung seines Arbeitskorbes Withdrawn EP0387141A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8903109 1989-03-09
FR8903109A FR2644204A1 (fr) 1989-03-09 1989-03-09 Echelle telescopique avec basculement automatique de son panier de travail dans les positions de transport et de travail

Publications (1)

Publication Number Publication Date
EP0387141A1 true EP0387141A1 (de) 1990-09-12

Family

ID=9379536

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90400606A Withdrawn EP0387141A1 (de) 1989-03-09 1990-03-06 Teleskopierbare Leiter mit automatischer Schwenkung seines Arbeitskorbes

Country Status (2)

Country Link
EP (1) EP0387141A1 (de)
FR (1) FR2644204A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108412415A (zh) * 2018-02-09 2018-08-17 中铁九局集团电务工程有限公司 隧道漏泄同轴电缆施工工程车

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3710893A (en) * 1971-06-21 1973-01-16 Bliss & Laughlin Ind Portable extendible crane with work basket
DE2139798A1 (de) * 1971-08-09 1973-02-22 Metz Gmbh Carl Vorrichtung zum ablegen eines an der spitze eines tragbalkens stehend angelenkten arbeits- und/oder rettungskorbes
DE2139800A1 (de) * 1971-08-09 1973-02-22 Metz Gmbh Carl Vorrichtung zum ablegen eines an der spitze eines tragbalkens stehend angelenkten arbeits- und/oder rettungskorbes
DE2160329A1 (de) * 1971-12-04 1973-06-07 Kloeckner Humboldt Deutz Ag Montagekorb fuer fahrbare drehleitern, insbesondere anhaengeleitern
FR2465867A1 (fr) * 1979-09-19 1981-03-27 Camiva Dispositif destine a orienter et a maintenir en differentes positions une plate-forme de travail d'echelle ou de bras elevateur telescopique
EP0159543A2 (de) * 1984-04-05 1985-10-30 Fmc Corporation Arbeitsplattformbefestigung für hydraulischen Kran

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3710893A (en) * 1971-06-21 1973-01-16 Bliss & Laughlin Ind Portable extendible crane with work basket
DE2139798A1 (de) * 1971-08-09 1973-02-22 Metz Gmbh Carl Vorrichtung zum ablegen eines an der spitze eines tragbalkens stehend angelenkten arbeits- und/oder rettungskorbes
DE2139800A1 (de) * 1971-08-09 1973-02-22 Metz Gmbh Carl Vorrichtung zum ablegen eines an der spitze eines tragbalkens stehend angelenkten arbeits- und/oder rettungskorbes
DE2160329A1 (de) * 1971-12-04 1973-06-07 Kloeckner Humboldt Deutz Ag Montagekorb fuer fahrbare drehleitern, insbesondere anhaengeleitern
FR2465867A1 (fr) * 1979-09-19 1981-03-27 Camiva Dispositif destine a orienter et a maintenir en differentes positions une plate-forme de travail d'echelle ou de bras elevateur telescopique
EP0159543A2 (de) * 1984-04-05 1985-10-30 Fmc Corporation Arbeitsplattformbefestigung für hydraulischen Kran

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108412415A (zh) * 2018-02-09 2018-08-17 中铁九局集团电务工程有限公司 隧道漏泄同轴电缆施工工程车

Also Published As

Publication number Publication date
FR2644204A1 (fr) 1990-09-14

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