EP0006076A1 - Lifting device with independently moving cage for climbing a mast - Google Patents

Lifting device with independently moving cage for climbing a mast Download PDF

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Publication number
EP0006076A1
EP0006076A1 EP19790810045 EP79810045A EP0006076A1 EP 0006076 A1 EP0006076 A1 EP 0006076A1 EP 19790810045 EP19790810045 EP 19790810045 EP 79810045 A EP79810045 A EP 79810045A EP 0006076 A1 EP0006076 A1 EP 0006076A1
Authority
EP
European Patent Office
Prior art keywords
mast
fork
elevator according
forks
arms
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
EP19790810045
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German (de)
French (fr)
Other versions
EP0006076B1 (en
Inventor
Jean-Marc Broussoux
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.)
ISOTUBE SA
Original Assignee
ISOTUBE 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
Priority claimed from CH488279A external-priority patent/CH630809A5/en
Application filed by ISOTUBE SA filed Critical ISOTUBE SA
Publication of EP0006076A1 publication Critical patent/EP0006076A1/en
Application granted granted Critical
Publication of EP0006076B1 publication Critical patent/EP0006076B1/en
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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
    • B66B9/02—Kinds or types of lifts in, or associated with, buildings or other structures actuated mechanically otherwise than by rope or cable

Definitions

  • the present invention relates to an autonomous cabin elevator for climbing along a mast.
  • the elevator according to the invention is. characterized in that it comprises a chassis on which are mounted a cabin and two forks fitted with clamping members for locking the elevator at any height along the mast, one of the forks being rigidly fixed to the chassis and the other fork being connected to said chassis, so as to be able to move sequentially by translation in the longitudinal direction of the mast, in that the clamping members of each of the forks comprise three jacks actuated by a pressurized fluid to bring them into a posi-.
  • each of the forks comprise a mechanical locking device with manual control
  • the movable fork is connected to a translation jack, arranged to move it sequentially along the mast.
  • this elevator comprises three extendable arms articulated on each of the forks and each equipped with a jack controlled separately.
  • each of the jacks is fitted with a pressure fluid intake valve or hydraulic valve, which complicates the device and makes it more expensive to manufacture.
  • the arms are arranged so that the mast is self-centered relative to the branches of the fork, which requires adjusting the position of the undercarriage of the elevator, according to each diameter of mast. Therefore, the undercarriage must be adjustable in position, this position having to be modified each time the operator works on a mast of different diameter.
  • the invention provides an elevator where the three actuating cylinders of the three arms of the same fork have only one hydraulic locking valve and on which the undercarriage can be fixedly mounted on the chassis, the distance between the peripheral surface of the mast and the hollow of the fork being constant regardless of the diameter of this mast.
  • the elevator represented by the figures comprises the chassis 1 of the cabin 7 carrying the two forks 2 and 4.
  • the fork 2 is rigidly fixed on the chassis 1.
  • the fork 4 is mounted on slides 3, which allows the move aside, then bring it closer to the fixed fork 2, by means of the jack 8 ..
  • Each of the forks 2 and 4 is respectively provided with clamping members 9 and 9 'actuated by jacks 19 and 19'.
  • the points of support of the clamping members on the mast may consist of suction cups, rubber or synthetic pads, plates with metal studs or electromagnets, depending on the material with which the mast 13 is realised.
  • the chassis 1 of the cabin 7 is provided, at its lower part, with a running gear 6 comprising a concave roller 5 which rests on the mast 13, an adjustment device 12 making it possible to adjust the position of this roller radially relative to the mast 13, in order to maintain the cabin in its vertical position, whatever the shape and thickness of the mast.
  • the movements of the jacks 8, 9 and 9 ' are coordinated by a sequential automatic central control device 10, a lever 11 allowing either to block the cabin 7 in the desired position, or to make it go up or down along the mast.
  • the elevator To climb along a mast, the elevator is supported on the mast 13 or on a support which is juxtaposed to it.
  • the jack 8 spreads the forks 2 and 4, the clamps 9 'are closed, the clamps 9 are open and the jack 8 raises the cabin 7 by resting on the fork 4 and the clamps 9'; then, the clamps 9 close, the clamps 9 'open and the jack 8 raises the fork 4 and its clamps 9'.
  • the cycle begins again. It will be stopped or reversed at will by lever 11.
  • a locking prevents the simultaneous opening of the clamping members 9 and 9 'of the two forks 2 and 4.
  • the clamping members 9, 9' are provided with springs working in the direction of tightening of the mast. to avoid any accident in the event of failure of the actuating means.
  • the pits 2 and 4 with their clamping members * 9, respectively 9 ', are interchangeable to ensure their maintenance and to adapt more particularly to various kinds of masts. The same goes for the undercarriage.
  • the elevation view of FIG. 3 and the front and top views of FIGS. 4 and 5 represent the elevator designated by the general reference 31 engaged on a mast 32, the peripheral surface of which is smooth.
  • the elevator 31 essentially comprises a frame 33 carrying the cabin 34 and two forks 35 and 36.
  • the upper fork 35 consists of two parallel flat plates 35a and 35b, the front and rear edges of which are in the form of a circular arc and which are mounted on a transverse part 35c (see fig. 5), the ends of which are respectively taken in two lateral rails 37 and 38 having a U-shaped profile.
  • This assembly allows, as will be described in more detail below, to the upper fork 35 to move between a high position shown in lines full and a low position 35 ′, shown in broken lines in FIGS. 1 and 2.
  • the lower fork 36 is. also made up of two parallel flat plates 36a and 36b, but it is rigidly fixed to the rails 37 and 38 which also constitute the front vertical uprights of the chassis 33.
  • the upper fork 35 comprises a central arm 39, the end of which is equipped with a suction cup made of an elastomeric material 39a, and two lateral arms 40 and 41, provided at their free end respectively with two suction cups made of an elastomeric material 40a and 41a.
  • the lower fork 36 comprises a central arm equipped with an end suction cup and two lateral arms also carrying, at their free end, a suction cup made of elastomeric material, the central arm and the lateral arms of the lower fork being identical in all respects to those of the upper fork.
  • the lateral arms 40 and 41 are pivotable respectively around axes 42 and 43 integral with the fork 35, or as described in more detail with reference to FIG. 4, around two axes 44 and 45, closer to each other, in order to allow these arms to grip masts of smaller diameters.
  • the fork 35 carries at its upper part a valve 46 shown diagrammatically, called a safety valve, which serves as a valve for distributing the fluid under pressure.
  • the valve 46 in fact supplies three hydraulic (or pneumatic) cylinders 47, 48 and 49 which respectively ensure the movements of the lateral arms 40 and 41 and of the central arm 39.
  • the fork 35 also carries the control device 50 for opening and closing the safety valve 46.
  • the fork 36 carries a safety valve 51 and its control device 52, which supplies three hydraulic (or pneumatic) cylinders 53, 54 and 55, acting respectively on the two arms side and the central arm mounted on the fork 36.
  • the longitudinal displacement of the fork 35 along the rails 37 and 38 and in the longitudinal direction of the mast 32, is effected pa: by means of a jack 56 fixed to the frame 33 and whose rod 57 is connected by its free end 58 at the fork 35.
  • the elevator 31 comprises a running gear essentially consisting of a roller 59, the peripheral surface of which has a V-shaped cross section, mounted on a fixed axis 60 integral with the end of a support 61 rigidly fixed to the frame 33.
  • the shape of the roller 59 is adapted to allow the elevator to roll vertically along the mast 32.
  • the elevator further comprises two wheels 62 and 63, respectively mounted on two supports 62a and 63a rotatable about a vertical axis.
  • the chassis 33 carries a certain number of elements used for controlling and driving the moving parts.
  • a control unit 64 a reservoir of pressurized fluid 65 which makes it possible to accumulate a reserve of pressurized fluid, above. capable of actuating the movable arms of the elevator in the event of a failure of the main supply, the valves 66 for distributing the pressurized fluid, the inlet 67 and the outlet 68 which allow the distribution valves 66 to be connected to the conduit (not shown) of the main power supply.
  • the fork 35 also carries, at its upper part, two mechanical locking devices 69 and 70 which allow the arms 40 and 41 to be manually and independently locked in their working position.
  • These devices can be arranged in any way, for example in the form of sliding locks with mechanical locking.
  • Figure 6 shows in more detail the fork 35 and the various elements which are mounted on it.
  • the upper plate 35a and the lower plate 35b delimit a space inside which are housed on the one hand the jacks 47 and 48 acting respectively on the lateral arms 40 and 41 and on the other hand, the jack 49 acting on the arm central 39.
  • the arm 40 comprises, on its inner face, a metal part 71 comprising a central bore 72 and an identical metal part 73, comprising a central bore 74 fixed along its outer edge.
  • the fork 35 has two offset openings 75 and 76, the first tooth 75 cooperates with the bore 72 of the metal part 71, to pivotally fix the arm 40 in a first position in which the elevator is adapted to climb to masts with large diameters, such as masts 32a and 32b shown in the figure.
  • the arm 40 is turned over so as to bring the metal piece 73 between the two plates 35a and 35b of the fork 35, the bore 74 being located opposite the opening 76, one obtains a position of the arm 40 which corresponds to the position of the arm 41 as shown in solid lines in FIG. 4.
  • the pads or suction cups made of elastomeric material 40a and 4la will be successively in the positions illustrated in the figure.
  • the pivot axis of the arm 41 can be brought successively to the two positions indicated by the references 77 and 78.
  • the actuator 47 and the actuator 48 (not shown) have an inner piston (not shown) which is extended by an outer rod 79 terminated by a rounded part 80 which rests on the inner side of the arm 40 and causes its tilting around its pivot axis.
  • the upper plate 35a is not cut and supports the locking device 69 preferably consisting of a metal piece 81 welded to the plate 35a and comprising a threaded central bore, in which engages a threaded rod 82 terminated by a thumbwheel 83.
  • the end piece 84 which corresponds to the rounded part 80 and which has the same shape and the same function as it, is preferably constituted by a cylindrical element fixed to the end of the rod 85 of the jack 48, 'and which is engaged in an oblong slot 86, arranged in the plate 35a, that it protrudes sufficiently to come into contact with the end of the threaded rod 82, when the latter is moved in the block 81 by turning the thumbwheel 83.
  • the arms 40 and 41 are also shown in FIG. 6 in their open position, in which they are shown in dotted lines and bear the references 40 'and 41'.
  • the hydraulic control circuit essentially comprises three separate blocks: a first block A mounted on the lift frame, a second block B secured to the fork 35 and a third block C secured to the fork 36.
  • the block A has two quick coupling devices 90 and 91, the first of which, which constitutes the inlet to the system, makes the connection with a pump 92 via a filter 93, and the second of which 91 constitutes the outlet of the system .
  • Block A also includes a two-way valve 94 called B6 and B7, a control pressure gauge 95, a reserve accumulator 96 containing a pressurized fluid (designated by the reference 65 in Figs.
  • a limiter pressure valve 97 intended to protect the accumulator 96 by limiting the pressure to 120 bars, a relief valve 98 to a channel called B1 and a pressure limiter 99 which limits the pressure brought into the valve 98 at a value less than or equal to 100 bars.
  • the block B located on the fork 35 includes a two-way valve 100 called B2 and B3 which communicate with the central distribution valve 101, via an exhaust valve 102 controlled.
  • the distribution valve 101 supplies the lateral jacks 103 and 104, as well as the central jack 105.
  • the block C includes a two-way valve 106 called B4 and B5, connected by means of a controlled exhaust valve 107 with a central distribution valve 108 which supplies the side jacks 109 and 110, thus than the central arm cylinder 111.
  • the movable fork 35 is moved by the jack 112 supplied by the valve 94.
  • the control pressure gauge 95 is preferably located inside the cabin, on the control panel and near the control lever (not represented).
  • Fig. 8 represents, in a schematic form, the electrical control circuit of the various active elements of the elevator.
  • Block D contains all the elements located in the cabin and includes a general contactor 120, the climb control switch 121 and the descent control switch 122.
  • the other components are all mounted either in the control box placed under the cabin, or on the forks. They essentially comprise an electric motor 123 which drives a battery of cyclic contactors C1 to C11, which sequentially controls the different channels B1 to B7 from the valves for admitting the pressurized fluid to the different control jacks illustrated in FIG. 7.
  • Two control switches 124 and 125 allow the pivotable arms to be controlled independently at the end of an operation.
  • An indicator light 126 placed inside the cabin, makes it possible to control the return to zero point of the cyclic contactor.
  • Fig. 9 illustrates the control sequences during a complete cycle of the device, that is to say during a complete rotation of the cam driven by the motor 123.
  • the time is given in seconds and l 'we see that a complete cycle lasts ten seconds.
  • Each operation is determined by a given time abscissa, which corresponds to an angle of the control cam, the complete cycle corresponding to a rotation of 360 °.
  • the pulses are carried, the first line corresponds to the stop, for which a pulse which lasts from 0.75 to 1 second is generated, which causes the inverter Cll acting on the electromagnet B1 to close.
  • the tilting of the inverter C11 generates the closing of the two clamps constituted by the two forks and their corresponding central and lateral arms.
  • the closing of the clamp 1 is represented by the following line with the switch C1 closed and the electromagnet B2 excited.
  • the opening of the clamp 1, represented by the line 4 is obtained by the closing of the switch 2 and the excitation of the electromagnet B3.
  • Closure of the clamp 2 illustrated by line 5 is obtained by closing the contact C3 and energizing the electromagnet B4.
  • the opening of the clamp 2 represented by the line 6 is obtained by the closing of the contact C4 and the excitation of the electromagnet B5.
  • the opening of the vertical position cylinder, responsible for the movement of the movable clamp, is obtained by closing the contact C5 and energizing the electromagnet 66, the closing of the position valve is obtained by closing the contact C6 and the excitation of the electromagnet B7.
  • Lines 3 to 6 correspond to the rise of the elevator. For the descent, the same sequences are observed with closing of the contacts C7, C8, C9 and C10, which correspond to the excitation of the electromagnets B2, B3, B4 and B5.
  • the operations are of course carried out in the same way, that is to say that the two clamps successively grip the mast, and the positioning jack sequentially brings the sequenced momentarily loosened clamp away from that which momentarily retains the 'elevator.
  • the central arms of the two forks have a constant stroke independent of the size of the mast. This allows, on the one hand, to exert maximum thrust on the cylinder acting on the central arm and on the other hand, to eliminate all the problems of adjustment and positioning of the undercarriage.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Automation & Control Theory (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Abstract

1. A lift with a self-contained cab for climbing a mast, and having a frame in which there are mounted the cab, gripping devices to effect the raising of the frame and the cab, and locking devices to lock the lift at any given level on the mast, these devices comprising two elements, one of which is attached rigidly to the frame while the other is connected to the said frame in such a way that it is able to move sequentially by translation in the longitudinal direction of the mast, characterised in that each of these elements (2, 4 and 35, 36) is formed by a fork which has three pneumatic or hydraulic jacks (19, 19' and 47, 48, 49) to bring them successively into a locking position in which they grip round the said mast in three regions evenly distributed over the peripheral surface of this mast, and in that the lift is equipped with control devices which are adapted to supply the three jacks of each of these forks in sequence, the gripping devices of the upper fork and the locking devices of the lower fork successively effecting the function of locking the lift in position.

Description

La présente invention concerne un élévateur à cabine autonome pour grimper le long d'un mât.The present invention relates to an autonomous cabin elevator for climbing along a mast.

Les mâts lisses en matières dures telles que le béton ou le métal, sont de plus en plus utilisés pour le transport de l'énergie électrique ou les liaisons téléphoniques, ou comme antennes de radio ou de télévision,*ou pour l'éclairage et la sonorisation de grandes surfaces en plein-air, telles que les terrains de sport, etc. Les travaux de révision ou d'installation des appareils supportés par ces mâts impliquent la présence d'un technicien qui devra grimper le long du mât avec son outillage et son matériel de travail. S'il est relativement simple de grimper le long d'un poteau en bois, à l'aide de crochets spéciaux ou crampons fixés aux chaussures, il n'en est pas de même des mâts métalliques. Les travaux évoqués ci-dessus nécessitent l'emploi d'élévateurs à bras articulés téléscopiques, montés sur un véhicule de transport dont la réquisition est souvent.honéreuse. En outre, ces véhicules ne sont pas toujours disponibles et, selon l'implantation du mât, par exemple dans des régions montagneuses ou désertiques, l'accès par un véhicule lourd peut être difficile, voire impossible.Smooth masts made of hard materials such as concrete or metal are increasingly used for the transport of electrical energy or telephone connections, or as radio or television antennas, * or for lighting and sound systems for large outdoor areas, such as sports grounds, etc. The work of overhaul or installation of the devices supported by these masts implies the presence of a technician who will have to climb along the mast with his tools and his work material. If it is relatively simple to climb along a wooden pole, using special hooks or crampons attached to the shoes, it is not the same with metal poles. The work mentioned above requires the use of elevators with telescopic articulated arms, mounted on a transport vehicle whose requisition is often expensive. In addition, these vehicles are not always available and, depending on the location of the mast, for example in mountainous or desert regions, access by a heavy vehicle may be difficult or even impossible.

C'est pourquoi l'invention comble une lacune en proposant un élévateur autonome pouvant être aisément transporté sur le terrain et manié par l'opérateur.This is why the invention fills a gap by proposing an autonomous lift which can be easily transported on the ground and handled by the operator.

Dans ce but, l'élévateur selon l'invention est. caractérisé en ce qu'il comporte un châssis sur lequel sont montées une cabine et deux fourches équipées d'organes de serrage pour bloquer l'élévateur à une hauteur quelconque le long du mât, l'une des fourches étant fixée rigidement au châssis et l'autre fourche étant reliée audit châssis, de façon à pouvoir se déplacer séquentiellement par translation dans la direction longitudinale du mât, en ce que les organes de serrage de chacune'des fourches comportent trois vérins actionnés par un fluide sous pression pour les amener dans une posi-. tion de blocage dans laquelle ils enserrent ledit mât, en ce que les organes de serrage de chacune des fourches comportent un dispositif de blocage mécanique à commande manuelle, et en ce que la fourche mobile est connectée à un vérin de translation, agencé pour la déplacer séquentiellement le long du mât.For this purpose, the elevator according to the invention is. characterized in that it comprises a chassis on which are mounted a cabin and two forks fitted with clamping members for locking the elevator at any height along the mast, one of the forks being rigidly fixed to the chassis and the other fork being connected to said chassis, so as to be able to move sequentially by translation in the longitudinal direction of the mast, in that the clamping members of each of the forks comprise three jacks actuated by a pressurized fluid to bring them into a posi-. blocking tion in which they enclose said mast, in that the clamping members of each of the forks comprise a mechanical locking device with manual control, and in that the movable fork is connected to a translation jack, arranged to move it sequentially along the mast.

Selon une forme de réalisation, cet élévateur comporte trois bras extensibles articulés sur chacune des fourches et équipés chacun d'un vérin commandé séparément.According to one embodiment, this elevator comprises three extendable arms articulated on each of the forks and each equipped with a jack controlled separately.

Pour des raisons de sécurité, chacun des vérins est équipé d'une vanne d'admission du fluide sous pression ou clapet hydraulique, ce qui complique le dispositif et renchérit sa fabrication. Par ailleurs, les bras sont agencés de manière à ce que le mât soit auto-centré par rapport aux branches de la fourche, ce qui oblige à ajuster la position du train rouleur de l'élévateur, en fonction de chaque diamètre demât. De ce fait, le train rouleur doit être ajustable en position., cette position devant être modifiée chaque fois que l'opérateur travaille sur un mât de diamètre différent.For safety reasons, each of the jacks is fitted with a pressure fluid intake valve or hydraulic valve, which complicates the device and makes it more expensive to manufacture. Furthermore, the arms are arranged so that the mast is self-centered relative to the branches of the fork, which requires adjusting the position of the undercarriage of the elevator, according to each diameter of mast. Therefore, the undercarriage must be adjustable in position, this position having to be modified each time the operator works on a mast of different diameter.

Selon une autre forme d'exécution, l'invention réalise un élévateur où les trois vérins de commande des trois bras d'une même fourche ne comportent qu'un seul clapet hydraulique de verrouillage et sur lequel le train rouleur peut être monté de manière fixe sur le châssis, la distance qui sépare la surface périphérique du mât du creux de la fourche étant constante quel que soit le diamètre de ce mât.According to another embodiment, the invention provides an elevator where the three actuating cylinders of the three arms of the same fork have only one hydraulic locking valve and on which the undercarriage can be fixedly mounted on the chassis, the distance between the peripheral surface of the mast and the hollow of the fork being constant regardless of the diameter of this mast.

La présente invention sera mieux comprise en référence à la description d'exemples de réalisations et du dessin annexé dans lequel :

  • La figure 1 représente une vue de côté d'une première forme d'exécution de l'élévateur selon l'invention,en prise sur un mât,
  • La figure 2 représente une vue de face de l'élévateur de la fig. 1,
  • La figure 3 représente une vue de côté d'une seconde forme d'exécution de l'élévateur selon l'invention, en prise sur un mât,
  • La figure 4 représente une vue de face de l'élévateur de la fig. 3,
  • La figure 5 représente une vue de dessus de l'élévateur des fig. 3 et 4,
  • La figure 6 est une vue agrandie d'une fourche de l'élévateur des fig. 3 à 5, illustrant les positions et le montage des bras en fonction des diamètres des mâts,
  • La figure 7 représente schématiquement le système de commande hydraulique ou pneumatique de l'élévateur selon les fig. 3 et 4,
  • La figure 8 représente sous forme schématique le circuit de commande électrique de l'élévateur selon les fig. 3 et 4, et
  • La figure 9 représente les séquences de commande des organes opérationnels de l'élévateur selon l'invention, en fonction du temps et de l'angle de la came de commande.
The present invention will be better understood with reference to the description of exemplary embodiments and the appended drawing in which:
  • FIG. 1 represents a side view of a first embodiment of the elevator according to the invention, engaged on a mast,
  • FIG. 2 represents a front view of the elevator of FIG. 1,
  • FIG. 3 represents a side view of a second embodiment of the elevator according to the invention, engaged on a mast,
  • FIG. 4 represents a front view of the elevator of FIG. 3,
  • FIG. 5 represents a top view of the elevator of FIGS. 3 and 4,
  • Figure 6 is an enlarged view of a fork of the elevator of Figs. 3 to 5, illustrating the positions and mounting of the arms as a function of the diameters of the masts,
  • FIG. 7 schematically represents the hydraulic or pneumatic control system of the elevator according to FIGS. 3 and 4,
  • FIG. 8 represents in schematic form the electrical control circuit of the elevator according to FIGS. 3 and 4, and
  • FIG. 9 represents the control sequences of the operational members of the elevator according to the invention, as a function of time and of the angle of the control cam.

L'élévateur représenté par les figures comporte le châssis 1 de la cabine 7 porteur des deux fourches 2 et 4. La fourche 2 est fixée rigidement sur le châssis 1. La fourche 4 est montée sur des glissières 3, ce qui permet de l'écarter, puis de la rapprocher de la fourche fixe 2, au moyen du vérin 8..The elevator represented by the figures comprises the chassis 1 of the cabin 7 carrying the two forks 2 and 4. The fork 2 is rigidly fixed on the chassis 1. The fork 4 is mounted on slides 3, which allows the move aside, then bring it closer to the fixed fork 2, by means of the jack 8 ..

Chacune des fourches 2 et 4 est munie respectivement d'organes de serrage 9 et 9' actionnés par des vérins 19 et 19'..Each of the forks 2 and 4 is respectively provided with clamping members 9 and 9 'actuated by jacks 19 and 19'.

Les points d'appui des organes de serrage sur le mât peuvent être constitués de ventouses, de tampons en caoutchouc ou en matière synthétique, de plaques à crampons métalliques ou d'électro-aimants, selon le matériau à l'aide duquel le mât 13 est réalisé.The points of support of the clamping members on the mast may consist of suction cups, rubber or synthetic pads, plates with metal studs or electromagnets, depending on the material with which the mast 13 is realised.

Le châssis 1 de la cabine 7 est muni, à sa partie inférieure, d'un train rouleur 6 comportant un galet concave 5 qui s'appuie sur le mât 13, un dispositif d'ajustage 12 permettant de régler la position de ce galet radialement par rapport au mât 13, afin de maintenir la cabine dans sa position verticale, quelle que soit la forme et l'épaisseur du mât. Les organes de translation 8 et de serrage 9, 9' sont constitués de vérins hydrauliques. Ces vérins pourraient aussi être pneumatiques ou remplacés par un dispositif électromécanique.The chassis 1 of the cabin 7 is provided, at its lower part, with a running gear 6 comprising a concave roller 5 which rests on the mast 13, an adjustment device 12 making it possible to adjust the position of this roller radially relative to the mast 13, in order to maintain the cabin in its vertical position, whatever the shape and thickness of the mast. The translation 8 and clamping members 9, 9 'consist of hydraulic cylinders. These jacks could also be pneumatic or replaced by an electromechanical device.

Les mouvements des vérins 8, 9 et 9' sont coordonnés par un dispositif de commande centrale automatique séquentielle 10, une manette 11 permettant soit de bloquer la cabine 7 dans la position voulue, soit de la faire monter ou descendre le long du mât.The movements of the jacks 8, 9 and 9 'are coordinated by a sequential automatic central control device 10, a lever 11 allowing either to block the cabin 7 in the desired position, or to make it go up or down along the mast.

Pour grimper le long d'un mât, l'élévateur prend appui sur le mât 13 ou sur un support qui lui est juxtaposé. Le vérin 8 écarte les fourches 2 et 4, les pinces 9' se ferment, les pinces 9 sont ouvertes et le vérin 8 élève la cabine 7 en prenant appui sur la fourche 4 et les pinces 9'; puis, les pinces 9 se ferment, les pinces 9' s'ouvrent et le vérin 8 élève la fourche 4 et ses pinces 9'. Le cycle recommence. Il sera stoppé ou inversé à volonté par la manette 11.To climb along a mast, the elevator is supported on the mast 13 or on a support which is juxtaposed to it. The jack 8 spreads the forks 2 and 4, the clamps 9 'are closed, the clamps 9 are open and the jack 8 raises the cabin 7 by resting on the fork 4 and the clamps 9'; then, the clamps 9 close, the clamps 9 'open and the jack 8 raises the fork 4 and its clamps 9'. The cycle begins again. It will be stopped or reversed at will by lever 11.

Pour assurer la sécurité, il est bien entendu qu'un verrouillage empêche l'ouverture simultanée des organes de serrage 9 et 9' des deux fourches 2 et 4. De plus, les organes de serrage 9, 9' sont munis de ressorts travaillant dans le sens d'un serrage.du mât, .pour éviter tout accident en cas de panne des moyens d'actionnement.To ensure safety, it is understood that a locking prevents the simultaneous opening of the clamping members 9 and 9 'of the two forks 2 and 4. In addition, the clamping members 9, 9' are provided with springs working in the direction of tightening of the mast. to avoid any accident in the event of failure of the actuating means.

Les fonrches 2 et 4, avec leurs organes de serrage* 9, respectivement 9', sont interchangeables pour assurer leur entretien et s'adapter plus particulièrement à diverses sortes de mâts. Il en va de même pour le train rouleur.The pits 2 and 4, with their clamping members * 9, respectively 9 ', are interchangeable to ensure their maintenance and to adapt more particularly to various kinds of masts. The same goes for the undercarriage.

La vue en élévation de la fig. 3 et les vues de face et de dessus des fig. 4 et 5 représentent l'élévateur désigné par la référence générale 31 en prise sur un mât 32, dont la surface périphérique est lisse. l'élévateur 31 comporte essentiellement un châssis 33 portant la cabine 34 et deux fourches 35 et 36. La fourche supérieure 35 est constituée de deux plaques planes 35a et 35b parallèles, dont les bords antérieurs et postérieurs sont en forme d'arc de cercle et qui sont montées sur une pièce transversale 35c (voir fig. 5), dont les extrémités sont respectivement prises dans deux rails latéraux 37 et 38 ayant un profil en U. Cet assemblage permet, comme cela sera décrit plus en détail ci-dessous, à la fourche supérieure 35 de se déplacer entre une position haute représentée en traits pleins et une position basse 35', représentée en.traits interrompus sur les fig. 1 et 2. La fourche inférieure 36 est. également constituée de deux plaques planes parallèles 36a et 36b, mais elle est fixée rigidement aux rails 37 et 38 qui constituent également les montants verticaux antérieurs du châssis 33.The elevation view of FIG. 3 and the front and top views of FIGS. 4 and 5 represent the elevator designated by the general reference 31 engaged on a mast 32, the peripheral surface of which is smooth. the elevator 31 essentially comprises a frame 33 carrying the cabin 34 and two forks 35 and 36. The upper fork 35 consists of two parallel flat plates 35a and 35b, the front and rear edges of which are in the form of a circular arc and which are mounted on a transverse part 35c (see fig. 5), the ends of which are respectively taken in two lateral rails 37 and 38 having a U-shaped profile. This assembly allows, as will be described in more detail below, to the upper fork 35 to move between a high position shown in lines full and a low position 35 ′, shown in broken lines in FIGS. 1 and 2. The lower fork 36 is. also made up of two parallel flat plates 36a and 36b, but it is rigidly fixed to the rails 37 and 38 which also constitute the front vertical uprights of the chassis 33.

La fourche supérieure 35 comporte un bras central 39 dont l'extrémité est équipée d'une ventouse en une matière élastomère 39a, et deux bras latéraux 40 et 41, pourvus à leur extrémité libre respectivement de deux ventouses en une matière élastomère 40a et 41a. De façon similaire, la fourche inférieure 36 comporte un bras central équipé d'une ventouse d'extrémité et deux bras latéraux portant également, à leur extrémité libre, une ventouse en matière élastomère, le bras central et les bras latéraux de la fourche inférieure étant en tout point identiques à ceux de la fourche supérieure. Les bras latéraux 40 et 41 sont pivotables respectivement autour d'axes 42 et 43 solidaires de la fourche 35, ou comme décrit plus en détail en référence à la fig. 4, autour de deux axes 44 et 45, plus rapprochés l'un de l'autre, dans le but de permettre à ces bras d'enserrer des mâts de diamètres plus petits.The upper fork 35 comprises a central arm 39, the end of which is equipped with a suction cup made of an elastomeric material 39a, and two lateral arms 40 and 41, provided at their free end respectively with two suction cups made of an elastomeric material 40a and 41a. Similarly, the lower fork 36 comprises a central arm equipped with an end suction cup and two lateral arms also carrying, at their free end, a suction cup made of elastomeric material, the central arm and the lateral arms of the lower fork being identical in all respects to those of the upper fork. The lateral arms 40 and 41 are pivotable respectively around axes 42 and 43 integral with the fork 35, or as described in more detail with reference to FIG. 4, around two axes 44 and 45, closer to each other, in order to allow these arms to grip masts of smaller diameters.

En se référant plus particulièrement à la fig. 2, on notera que la fourche 35 porte à sa partie supérieure un clapet 46 représenté schématiquement, dit clapet de sécurité, qui sert de vanne de distribution du fluide sous pression. La vanne 46 alimente en fait trois vérins hydrauliques (ou pneumatiques) 47, 48 et 49 qui assurent respectivement les mouvements des bras latéraux 40 et 41 et du bras central 39. La fourche 35 porte également le dispositif de commande 50 de l'ouverture et de la fermeture du clapet de sécurité 46. De façon similaire, la fourche 36 porte un clapet de sécurité 51 et son dispositif de commande 52, qui alimente trois vérins hydrauliques (ou pneumatiques) 53, 54 et 55, agissant respectivement sur les deux bras latéraux et le bras central monté sur la fourche 36.With particular reference to FIG. 2, it will be noted that the fork 35 carries at its upper part a valve 46 shown diagrammatically, called a safety valve, which serves as a valve for distributing the fluid under pressure. The valve 46 in fact supplies three hydraulic (or pneumatic) cylinders 47, 48 and 49 which respectively ensure the movements of the lateral arms 40 and 41 and of the central arm 39. The fork 35 also carries the control device 50 for opening and closing the safety valve 46. Similarly, the fork 36 carries a safety valve 51 and its control device 52, which supplies three hydraulic (or pneumatic) cylinders 53, 54 and 55, acting respectively on the two arms side and the central arm mounted on the fork 36.

Le déplacement longitudinal de la fourche 35 le long des rails 37 et 38 et selon la direction longitudinale du mât 32, est effectué pa: l'intermédiaire d'un vérin 56 fixé au châssis 33 et dont la tige 57 est reliée par son extrémité libre 58 à la fourche 35.The longitudinal displacement of the fork 35 along the rails 37 and 38 and in the longitudinal direction of the mast 32, is effected pa: by means of a jack 56 fixed to the frame 33 and whose rod 57 is connected by its free end 58 at the fork 35.

A sa partie inférieure, l'élévateur 31 comporte un train de roulement constitué essentiellement d'un galet 59, dont la surface périphérique présente une coupe transversale en forme de V, montée sur un axe fixe 60 solidaire de l'extrémité d'un support 61 fixé rigidement au châssis 33. La forme du galet 59 est adaptée pour permettre.à l'élévateur de rouler verticalement le long du mât 32. Pour ses déplacements au sol, l'élévateur comporte en outre deux roues 62 et 63, respectivement montées sur deux supports 62a et 63a rotatifs autour d'un axe vertical.At its lower part, the elevator 31 comprises a running gear essentially consisting of a roller 59, the peripheral surface of which has a V-shaped cross section, mounted on a fixed axis 60 integral with the end of a support 61 rigidly fixed to the frame 33. The shape of the roller 59 is adapted to allow the elevator to roll vertically along the mast 32. For its movements on the ground, the elevator further comprises two wheels 62 and 63, respectively mounted on two supports 62a and 63a rotatable about a vertical axis.

En-dessous de la cabine 34, le châssis 33 porte un certain nombre d'éléments servant à la commande et à l'entraînement des pièces mobiles. En particulier, un boîtier de commande 64, un réservoir de fluide sous pression 65 qui permet d'accumuler une réserve de fluide sous pression, sus-. ceptible d'actionner les bras mobiles de l'élévateur en cas de panne de l'alimentation principale, les vannes 66 de distribution du fluide sous pression, l'arrivée 67 et la sortie 68 qui permettent de relier les vannes de distribution 66 au conduit (non représenté) de l'alimentation principale.Below the cabin 34, the chassis 33 carries a certain number of elements used for controlling and driving the moving parts. In particular, a control unit 64, a reservoir of pressurized fluid 65 which makes it possible to accumulate a reserve of pressurized fluid, above. capable of actuating the movable arms of the elevator in the event of a failure of the main supply, the valves 66 for distributing the pressurized fluid, the inlet 67 and the outlet 68 which allow the distribution valves 66 to be connected to the conduit (not shown) of the main power supply.

En se référant plus spécifiquement à la fig. 5, la fourche 35 porte également, à sa partie supérieure, deux dispositifs de verrouillage mécaniques 69 et 70-qui permettent de bloquer manuellement et de façon indépendante les bras 40 et 41 dans leur position de travail. Ces dispositifs peuvent être agencés de manière quelconque, par exemple sous forme de verrous coulissants à blocage mécanique.Referring more specifically to FIG. 5, the fork 35 also carries, at its upper part, two mechanical locking devices 69 and 70 which allow the arms 40 and 41 to be manually and independently locked in their working position. These devices can be arranged in any way, for example in the form of sliding locks with mechanical locking.

La figure 6 représente de façon plus détaillée la fourche 35 et les différents éléments qui sont montés sur elle. La plaque supérieure 35a et la plaque inférieure 35b délimitent un espace à l'intérieur duquel sont logés d'une part les vérins 47 et 48 agissant respectivement sur les bras latéraux 40 et 41 et d'autre part, le vérin 49 agissant sur le bras central 39. Le bras 40 comporte, sur sa face intérieure, une pièce métallique 71 comportant un alésage central 72 et une pièce métallique identique 73, comportant un alésage central 74 fixé le long de son bord extérieur. La fourche 35 comporte deux ouvertures décalées 75 et 76, dent la première 75 coopère avec l'alésage 72 de la pièce métallique 71, pour fixer de manière pivotable le bras 40 en une première position dans laquelle l'élévateur est adapté pour grimper à des mâts de gros diamètres, tels que les mâts 32a et 32b représentés sur la figure. Lorsqu'on retourne le bras 40 de manière à amener la pièce métallique 73 entre les deux plaques 35a et 35b de la fourche 35, l'alésage 74 se trouvant en regard de l'ouverture 76, on obtient une position du bras 40 qui correspond à la position du bras 41 telle que représentée en traits pleins sur la fig. 4. Bien entendu, lors du retournement, les coussinets ou ventouses en matière élastomère 40a et 4la se trouveront successivement dans les positions illustrées par la figure. Comme précédemment, l'axe de pivotement du bras 41 peut être amené successivement aux deux positions indiquées par les références 77 et 78.Figure 6 shows in more detail the fork 35 and the various elements which are mounted on it. The upper plate 35a and the lower plate 35b delimit a space inside which are housed on the one hand the jacks 47 and 48 acting respectively on the lateral arms 40 and 41 and on the other hand, the jack 49 acting on the arm central 39. The arm 40 comprises, on its inner face, a metal part 71 comprising a central bore 72 and an identical metal part 73, comprising a central bore 74 fixed along its outer edge. The fork 35 has two offset openings 75 and 76, the first tooth 75 cooperates with the bore 72 of the metal part 71, to pivotally fix the arm 40 in a first position in which the elevator is adapted to climb to masts with large diameters, such as masts 32a and 32b shown in the figure. When the arm 40 is turned over so as to bring the metal piece 73 between the two plates 35a and 35b of the fork 35, the bore 74 being located opposite the opening 76, one obtains a position of the arm 40 which corresponds to the position of the arm 41 as shown in solid lines in FIG. 4. Of course, during the inversion, the pads or suction cups made of elastomeric material 40a and 4la will be successively in the positions illustrated in the figure. As before, the pivot axis of the arm 41 can be brought successively to the two positions indicated by the references 77 and 78.

Le vérin 47 et le vérin 48 (non représentés) comportent un piston intérieur (non représenté) qui est prolongé par une tige extérieure 79 terminée par une pièce arrondie 80 qui s'appuie sur le côté intérieur du bras 40 et engendre son basculement autour de son axe de pivotement. Sur le côté droit de la fig. 4, la plaque supérieure 35a n'est pas coupée et supporte le dispositif de blocage 69 constitué de préférence par une pièce métallique 81 soudée à la plaque 35a et comportant un alésage central fileté, dans lequel s'engage une tige filetée 82 terminée par une molette 83. L'embout 84, qui correspond à la pièce arrondie 80 et qui a la même forme et la même fonction qu'elle, est de préférence constitué par un élément cylindrique fixé à l'extrémité de la tige 85 du vérin 48,'et qui est engagé dans une fente oblongue 86, aménagée dans la plaque 35a, qu'elle dépasse suffisamment pour entrer en contact avec l'extrémité de la tige filetée 82, lorsqu'on déplace celle-ci dans le bloc 81 en tournant la molette 83.The actuator 47 and the actuator 48 (not shown) have an inner piston (not shown) which is extended by an outer rod 79 terminated by a rounded part 80 which rests on the inner side of the arm 40 and causes its tilting around its pivot axis. On the right side of fig. 4, the upper plate 35a is not cut and supports the locking device 69 preferably consisting of a metal piece 81 welded to the plate 35a and comprising a threaded central bore, in which engages a threaded rod 82 terminated by a thumbwheel 83. The end piece 84, which corresponds to the rounded part 80 and which has the same shape and the same function as it, is preferably constituted by a cylindrical element fixed to the end of the rod 85 of the jack 48, 'and which is engaged in an oblong slot 86, arranged in the plate 35a, that it protrudes sufficiently to come into contact with the end of the threaded rod 82, when the latter is moved in the block 81 by turning the thumbwheel 83.

Les bras 40 et 41 sont également représentés sur la fig. 6 dans leur position ouverte, dans laquelle ils sont représentés en traits pointillés et portent les références 40' et 41'.The arms 40 and 41 are also shown in FIG. 6 in their open position, in which they are shown in dotted lines and bear the references 40 'and 41'.

En se référant à la fig. 7, le circuit de commande hydraulique comporte essentiellement trois blocs séparés : un premier bloc A monté sur le.châssis de l'élévateur, un second bloc B solidaire de la fourche 35 et un troisième bloc C solidaire de la fourche 36. Le bloc A comporte deux dispositifs de raccord rapides 90 et 91, dont le premier, qui constitue l'entrée dans le système, effectue le raccordement avec une pompe 92 par l'intermédiaire d'un filtre 93, et dont le second 91 constitue la sortie du système. Le bloc A comporte par ailleurs une vanne 94 à deux voies appelées B6 et B7, un manomètre de contrôle 95, un accumulateur de réserve 96 contenant un fluide sous pression (désigné par la référence 65 sur les fig. 3 et 4), un limiteur de pression 97 destiné à protéger l'accumulateur 96 en limitant la pression à 120 bars, une vanne de décharge 98 à une voie appelée B1 et un limiteur de pression 99 qui limite la pression amenée dans la vanne 98 à une valeur inférieure ou égale à 100 bars.Referring to fig. 7, the hydraulic control circuit essentially comprises three separate blocks: a first block A mounted on the lift frame, a second block B secured to the fork 35 and a third block C secured to the fork 36. The block A has two quick coupling devices 90 and 91, the first of which, which constitutes the inlet to the system, makes the connection with a pump 92 via a filter 93, and the second of which 91 constitutes the outlet of the system . Block A also includes a two-way valve 94 called B6 and B7, a control pressure gauge 95, a reserve accumulator 96 containing a pressurized fluid (designated by the reference 65 in Figs. 3 and 4), a limiter pressure valve 97 intended to protect the accumulator 96 by limiting the pressure to 120 bars, a relief valve 98 to a channel called B1 and a pressure limiter 99 which limits the pressure brought into the valve 98 at a value less than or equal to 100 bars.

Le bloc B localisé sur la fourche 35 comporte une vanne 100 à deux voies appelées B2 et B3 qui communiquent avec la vanne de distribution centrale 101, par l'intermédiaire d'un clapet d'échappement 102 commandé. La vanne de distribution 101 alimente les vérins latéraux 103 et 104, ainsi que le vérin central 105.The block B located on the fork 35 includes a two-way valve 100 called B2 and B3 which communicate with the central distribution valve 101, via an exhaust valve 102 controlled. The distribution valve 101 supplies the lateral jacks 103 and 104, as well as the central jack 105.

De façon similaire, le bloc C comporte une vanne 106 à deux voies appelées B4 et B5, reliées par l'intermédiaire d'un clapet d'échappement commandé 107 avec une vanne de distribution centrale 108 qui alimente les vérins latéraux 109 et 110, ainsi que le vérin du bras central 111.Similarly, the block C includes a two-way valve 106 called B4 and B5, connected by means of a controlled exhaust valve 107 with a central distribution valve 108 which supplies the side jacks 109 and 110, thus than the central arm cylinder 111.

Le déplacement de la fourche mobile 35 est effectué par le vérin 112 alimenté par la vanne 94. Le manomètre de contrôle 95 se trouve de préférence à l'intérieur de la cabine, sur le tableau de commande et à proximité du levier de commande (non représenté).The movable fork 35 is moved by the jack 112 supplied by the valve 94. The control pressure gauge 95 is preferably located inside the cabin, on the control panel and near the control lever (not represented).

La fig. 8 représente, sous une forme schématique, le circuit de commande électrique des différents éléments actifs de l'élévateur. Le bloc D renferme tous les éléments localisés dans la cabine et comprend un contacteur général 120, l'interrupteur de commande de la montée 121 et l'interrupteur de commande de la descente 122. Les autres composants sont tous montés soit dans le coffret de commande disposé sous la cabine, soit sur les fourches. Ils comportent essentiellement un moteur électrique 123 qui entraîne une batterie de contacteurs cycliques C1 à C11, qui commande séquentiellement les différentes voies B1 à B7 des vannes d'admission du fluide sous pression vers les différents vérins de commande illustrés par la fig. 7. Deux interrupteurs de commande 124 et 125 permettent de commander, de façon indépendante, les bras pivotables à la fin d'une opération. Un témoin lumineux 126, disposé à l'intérieur de la cabine, permet de contrôler le retour au point zéro du contacteur cyclique.Fig. 8 represents, in a schematic form, the electrical control circuit of the various active elements of the elevator. Block D contains all the elements located in the cabin and includes a general contactor 120, the climb control switch 121 and the descent control switch 122. The other components are all mounted either in the control box placed under the cabin, or on the forks. They essentially comprise an electric motor 123 which drives a battery of cyclic contactors C1 to C11, which sequentially controls the different channels B1 to B7 from the valves for admitting the pressurized fluid to the different control jacks illustrated in FIG. 7. Two control switches 124 and 125 allow the pivotable arms to be controlled independently at the end of an operation. An indicator light 126, placed inside the cabin, makes it possible to control the return to zero point of the cyclic contactor.

La fig. 9 illustre les séquences de commande au cours d'un cycle complet du dispositif, c'est-à-dire au cours d'une rotation complète de la came entraînée par le moteur 123. En abscisse, le temps est donné en secondes et l'on constate qu'un cycle complet dure dix secondes. Chaque opération est déterminée par une abscisse temps donnée, qui correspond à un angle de la came de commande, le cycle complet correspondant à une rotation de 360°. En ordonnée, on porte les impulsions, la première ligne correspond à l'arrêt, pour lequel on engendre une impulsion qui dure de 0,75 à 1 seconde, qui entraîne la fermeture de l'inverseur Cll agissant sur l'électroaimant B1. Dans la deuxième ligne, le basculement de l'inverseur C11 engendre la fermeture des deux pinces constituées par les deux fourches et leurs bras central et latéraux correspondants. La fermeture de la pince 1 est représentée par la ligne suivante avec l'interrupteur Cl fermé et l'électroaimant B2 excité. L'ouverture de la pince 1, représentée par la ligne 4, s'obtient par la fermeture de l'interrupteur 2 et l'excitation de l'électroaimant B3. La fermeture de la pince 2 illustrée par la ligne 5 est obtenue par la fermeture du contact C3 et l'excitation de l'électroaimant B4. L'ouverture de la pince 2 représentée par la ligne 6 s'obtient par la fermeture du contact C4 et l'excitation de l'électroaimant B5. L'ouverture du vérin de position verticale, responsable du déplacement de la pince mobile, s'obtient par la fermeture du contact C5 et l'excitation de l'électroaimant 66, la fermeture de la vanne de position est obtenue par la fermeture du contact C6 et l'excitation de l'électroaimant B7. Les lignes 3 à 6 correspondent à la montée de l'élévateur. Pour la descente, on observe les mêmes séquences avec fermeture des contacts C7, C8, C9 et C10, qui correspondent à l'excitation des électroaimants B2, B3, B4 et B5.Fig. 9 illustrates the control sequences during a complete cycle of the device, that is to say during a complete rotation of the cam driven by the motor 123. On the abscissa, the time is given in seconds and l 'we see that a complete cycle lasts ten seconds. Each operation is determined by a given time abscissa, which corresponds to an angle of the control cam, the complete cycle corresponding to a rotation of 360 °. On the ordinate, the pulses are carried, the first line corresponds to the stop, for which a pulse which lasts from 0.75 to 1 second is generated, which causes the inverter Cll acting on the electromagnet B1 to close. In the second line, the tilting of the inverter C11 generates the closing of the two clamps constituted by the two forks and their corresponding central and lateral arms. The closing of the clamp 1 is represented by the following line with the switch C1 closed and the electromagnet B2 excited. The opening of the clamp 1, represented by the line 4, is obtained by the closing of the switch 2 and the excitation of the electromagnet B3. Closure of the clamp 2 illustrated by line 5 is obtained by closing the contact C3 and energizing the electromagnet B4. The opening of the clamp 2 represented by the line 6 is obtained by the closing of the contact C4 and the excitation of the electromagnet B5. The opening of the vertical position cylinder, responsible for the movement of the movable clamp, is obtained by closing the contact C5 and energizing the electromagnet 66, the closing of the position valve is obtained by closing the contact C6 and the excitation of the electromagnet B7. Lines 3 to 6 correspond to the rise of the elevator. For the descent, the same sequences are observed with closing of the contacts C7, C8, C9 and C10, which correspond to the excitation of the electromagnets B2, B3, B4 and B5.

Le fonctionnement du dispositif selon l'invention se comprend aisément :

  • - la pince supérieure mobile enserre le mât au moyen des deux bras latéraux et du bras central
  • - la pince inférieure fixée au châssis de l'élévateur relâche le mât
  • - le vérin de positionnement tire le châssis et tous les éléments qu'il supporte en direction de la pince 1 qui agrippe solidement le mât
  • - la pince fixe inférieure se referme pour enserrer le mât
  • - la pince supérieure mobile s'ouvre et se déplace vers le haut sous l'action du piston de positionnement
  • - la pince supérieure mobile se referme pour enserrer le mât et ainsi de suite, jusqu'à ce que l'élévateur soit arrivé à la hauteur souhaitée.
The operation of the device according to the invention is easily understood:
  • - the movable upper clamp grips the mast by means of the two lateral arms and the central arm
  • - the lower clamp fixed to the lift frame releases the mast
  • - the positioning cylinder pulls the chassis and all the elements it supports in the direction of the clamp 1 which securely grips the mast
  • - the lower fixed clamp closes to grip the mast
  • - the movable upper clamp opens and moves upwards under the action of the positioning piston
  • - the movable upper clamp closes to grip the mast and so on, until the elevator has reached the desired height.

Pour la descente, les opérations se passent bien entendu de la même manière, c'est-à-dire que les deux pinces enserrent successivement le mât, et le vérin de positionnement rapproche et éloigne séquentiellement la pince momentanément desserrée de celle qui retient momentanément l'élévateur. Pour que le train rouleur puisse conserver une position constante, ne nécessitant aucun ajustage en fonction du diamètre du mât sur lequel travaille l'élévateur, les bras centraux des deux fourches ont une course constante indépendante de la dimension du mât. Ceci permet, d'une part, d'exercer une poussée maximale sur le vérin agissant sur le bras central et d'autre part, de supprimer tous les problèmes de réglage et de positionnement du train rouleur.For the descent, the operations are of course carried out in the same way, that is to say that the two clamps successively grip the mast, and the positioning jack sequentially brings the sequenced momentarily loosened clamp away from that which momentarily retains the 'elevator. So that the undercarriage can maintain a constant position, requiring no adjustment as a function of the diameter of the mast on which the lift works, the central arms of the two forks have a constant stroke independent of the size of the mast. This allows, on the one hand, to exert maximum thrust on the cylinder acting on the central arm and on the other hand, to eliminate all the problems of adjustment and positioning of the undercarriage.

Claims (15)

1. Elévateur à cabine autonome pour grimper le long d'un mât, caractérisé en ce qu'il comporte un châssis sur.lequel sont montées une cabine et deux fourches équipées d'organes de serrage pour bloquer l'élévateur à une hauteur quelconque le long du mât, l'une des fourches étant fixée rigidement au châssis et l'autre fourche étant reliée audit châssis, de façon à pouvoir se déplacer séquentiellement par translation dans la direction longitudinale du mât, en ce que les organes de serrage de chacune des fourches comportent trois vérins actionnés par un fluide sous pression pour les amener dans une position de blocage dans laquelle ils enserrent ledit mât, en ce que les organes de serrage de chacune des fourches comportent un dispositif de blocage mécanique à commande manuelle, et en ce que la fourche mobile est connectée à un vérin de translation, agencé pour la déplacer séquentiellement le long du mât.1. Elevator with autonomous cabin for climbing along a mast, characterized in that it comprises a chassis sur.lequel are mounted a cabin and two forks equipped with clamping members to lock the elevator at any height along the mast, one of the forks being rigidly fixed to the chassis and the other fork being connected to said chassis, so as to be able to move sequentially by translation in the longitudinal direction of the mast, in that the clamping members of each of the forks have three cylinders actuated by a pressurized fluid to bring them into a locking position in which they enclose said mast, in that the clamping members of each of the forks include a mechanical locking device with manual control, and in that the movable fork is connected to a translation jack, arranged to move it sequentially along the mast. 2. Elévateur selon la revendication 1, caractérisé en ce que les trois vérins de chaque fourche sont connectés à une vanne.d'alimentation centrale montée sur la fourche correspondante.2. Elevator according to claim 1, characterized in that the three jacks of each fork are connected to a central supply valve mounted on the corresponding fork. 3. Elévateur selon la revendication 2, caractérisé en ce que les organes de serrage de chacune des fourches comportent un bras central extensible et deux bras latéraux pivotables autour d'un axe fixe solidaire de la fourche.3. Elevator according to claim 2, characterized in that the clamping members of each of the forks comprise an extendable central arm and two lateral arms pivotable about a fixed axis integral with the fork. 4. Elévateur selon la revendication 3, caractérisé en ce que chaque bras latéral comporte un premier dispositif de fixation, agencé pour coopérer avec un premier point d'ancrage localisé sur la fourche correspondante, et un second dispositif de fixation agencé pour coopérer avec un second point d'ancrage localisé sur ladite fourche, lesdits premier et second dispositifs de fixation étant décalés l'un par rapport à l'autre et lesdits premier et second points d'ancrage de la fourche étant également décalés, de telle manière que le montage des bras, au moyen desdits premiers dispositifs de fixation, confère à ces bras un éventail d'ouvertures données correspondant à une première gamme de diamètres de mâts et que le montage des bras, au moyen desdits seconds dispositifs de fixation, confère à ces bras un éventail d'ouvertures données différentes correspondant à une seconde gamme de diamètres de mâts.4. Elevator according to claim 3, characterized in that each lateral arm comprises a first fixing device, arranged to cooperate with a first anchoring point located on the corresponding fork, and a second fixing device arranged to cooperate with a second anchor point located on said fork, said first and second fastening devices being offset from each other and said first and second fork anchor points being also offset, so that the mounting of the arms, by means of said first fixing devices, gives these arms a range of given openings corresponding to a first range of mast diameters and that the mounting of the arms, by means of said second fixing devices, gives these arms a range different openings corresponding to a second range of mast diameters. 5. Elévateur selon la revendication 4, caractérisé en ce que le premier dispositif de fixation se trouve localisé sur un côté du bras et ledit second dispositif de fixation se trouve localisé sur le côté opposé du bras, de telle manière que le montage du bras sur la fourche, au second point d'ancrage, nécessite le retournement du bras par rapport à sa position de montage sur la fourche, au premier point d'ancrage.5. Elevator according to claim 4, characterized in that the first fixing device is located on one side of the arm and said second fixing device is located on the opposite side of the arm, so that the mounting of the arm on the fork, at the second anchoring point, requires the inversion of the arm relative to its mounting position on the fork, at the first anchor point. 6. Elément selon la revendication 3, caractérisé en ce que le bras central est agencé pour effectuer une course d'extension constante quel que soit le diamètre du mât.6. Element according to claim 3, characterized in that the central arm is arranged to perform a constant extension stroke regardless of the diameter of the mast. 7. Elévateur selon la revendication 2, caractérisé en ce que chaque fourche porte une vanne unique de distribution du fluide sous pression, connectée aux trois vérins de commande des trois bras montés-sur la fourche, ladite vanne étant reliée séparément à un générateur de fluide sous pression, au moyen d'un conduit de liaison souple.7. Elevator according to claim 2, characterized in that each fork carries a single valve for distributing the pressurized fluid, connected to the three actuating cylinders of the three arms mounted on the fork, said valve being connected separately to a fluid generator under pressure, by means of a flexible connection conduit. 8. Elévateur selon la revendication 1, caractérisé en ce que chaque fourche comporte des moyens de blocage mécaniques des-bras, agencés pour être commandés manuellement et de manière indépendante.8. Elevator according to claim 1, characterized in that each fork comprises mechanical locking means of the arms, arranged to be controlled manually and independently. 9. Elévateur selon la revendication 1,-caractérisé en ce qu'il comporte un dispositif de commande centrale séquentielle et une manette de commande agencée pour commander la montée , la descente ou l'arrêt à une hauteur quelconque du mât.9. Elevator according to claim 1, -caractérisé in that it comprises a sequential central control device and a control lever arranged to control the ascent, descent or stop at any height of the mast. 10. Elévateur selon la revendication 1, caractérisé en ce que les vérins de serrage des fourches et le vérin de translation de la fourche mobile sont des vérins hydrauliques.10. Elevator according to claim 1, characterized in that the clamping cylinders of the forks and the translation cylinder of the movable fork are hydraulic cylinders. 11. Elévateur selon la revendication 1, caractérisé en ce que les vérins de serrage des fourches et le vérin de translation de la fourche mobile sont des vérins pneumatiques.11. Elevator according to claim 1, characterized in that the clamping cylinders of the forks and the translation cylinder of the movable fork are pneumatic cylinders. 12. Elévateur selon la revendication 1, caractérisé en ce que le châssis comporte, à sa partie inférieure, un train rouleur comportant au moins un galet d'appui sur le mât, un dispositif d'ajustage agencé pour régler la position de ce galet radialement par rapport au mât, afin de maintenir la cabine dans sa position verticale, quelle que soit la forme et l'épaisseur du mât.12. Elevator according to claim 1, characterized in that the chassis comprises, at its lower part, a rolling train comprising at least one support roller on the mast, an adjustment device arranged to adjust the position of this roller radially relative to the mast, in order to maintain the cabin in its vertical position, whatever the shape and thickness of the mast. 13. Elévateur selon la revendication 1, caractérisé en ce que la fourche mobile est guidée sur le châssis au moyen de glissières.13. Elevator according to claim 1, characterized in that the movable fork is guided on the chassis by means of slides. 14. Elévateur selon la revendication 1, caractérisé en ce que les organes de serrage sont munis de ressorts travaillant dans le sens d'un serrage du mât, pour réaliser un blocage automatique en cas de panne des vérins de serrage.14. Elevator according to claim 1, characterized in that the clamping members are provided with springs working in the direction of clamping the mast, to achieve automatic locking in the event of failure of the clamping cylinders. 15. Elévateur selon la revendication 10, caractérisé en ce que les fourches, ainsi que le train rouleur,sont interchangeables pour s'adapter à différentes configurations de mâts.15. Elevator according to claim 10, characterized in that the forks, as well as the undercarriage, are interchangeable to adapt to different mast configurations.
EP19790810045 1978-05-31 1979-05-30 Lifting device with independently moving cage for climbing a mast Expired EP0006076B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH593678 1978-05-31
CH5936/78 1978-05-31
CH488279A CH630809A5 (en) 1979-05-25 1979-05-25 Elevator with autonomous cab for climbing along a mast
CH4882/79 1979-05-25

Publications (2)

Publication Number Publication Date
EP0006076A1 true EP0006076A1 (en) 1979-12-12
EP0006076B1 EP0006076B1 (en) 1984-04-04

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EP19790810045 Expired EP0006076B1 (en) 1978-05-31 1979-05-30 Lifting device with independently moving cage for climbing a mast

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Country Link
EP (1) EP0006076B1 (en)
AT (1) AT371950B (en)
DE (1) DE2966868D1 (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2150913A (en) * 1983-08-09 1985-07-10 Hugh Kane Self propelled carriage
WO1992004269A1 (en) * 1990-08-31 1992-03-19 Guy Vandal Pole climbing robot
EP0542168A1 (en) * 1991-11-15 1993-05-19 Alce Garden S.r.l. Self-propelled vehicle for climbing along pole-shaped elements, such as tree trunks, poles and the like
DE4413165A1 (en) * 1994-04-15 1995-10-19 Rexroth Mannesmann Gmbh Hydraulic lift for raising and lowering loads
EP1110903A1 (en) * 1999-12-16 2001-06-27 TecSec Europe Limited Equipment deployment method and apparatus
ES2194552A1 (en) * 1999-03-30 2003-11-16 Gen Elevadores Xxi S L Vertical transport device has climbing mechanism, preferably for single family houses, and has traction climbing system acting on cylindrical guides running through floors to be served
FR2900140A1 (en) * 2006-04-24 2007-10-26 Manuel Machado Lift e.g. goods-lift, driving and securing device for e.g. scaffolding work, has blockers successively released and pushed by distribution device and shaft, where one blocker acts on reinforcements and thrust plate moving cage along rails
WO2008039199A1 (en) * 2006-09-28 2008-04-03 Otis Elevator Company Assembly for roping an elevator
WO2012089760A1 (en) * 2010-12-29 2012-07-05 Daniel Mertl Conveying means for loads or persons
RU2458845C2 (en) * 2006-09-28 2012-08-20 Отис Элевейтэ Кампэни Device for manual adjustment of long object vertical displacement
CN106586914A (en) * 2017-02-24 2017-04-26 黄启东 Pole climbing lifter
CN108868089A (en) * 2018-07-17 2018-11-23 李秀英 A kind of Construction of Steel Structure platform
CN111228756A (en) * 2020-02-21 2020-06-05 晁志兵 Working method of bearing type power maintenance climbing device
CN112265946A (en) * 2020-11-04 2021-01-26 国网河北省电力有限公司邢台市任泽区供电分公司 Electric pole climbing device for field electric power overhaul
CN112316389A (en) * 2020-10-15 2021-02-05 南京舟前扬商贸有限公司 Make things convenient for communication tower to overhaul with device that descends after climbing
CN112864955A (en) * 2021-04-13 2021-05-28 合肥工业大学 Threading device of space truss communication cable
CN112909827A (en) * 2021-04-15 2021-06-04 云南电网有限责任公司电力科学研究院 Power transmission line inspection robot without changing line and crossing tower and tower crossing method
CN113511280A (en) * 2021-07-05 2021-10-19 中国矿业大学 Steel wire rope climbing robot

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006050900A1 (en) * 2006-10-28 2008-04-30 Ed. Züblin Ag Device for installation wind energy plants, particularly offshore wind energy plants, particularly gandola, is elevator transportable from wind energy plant tower to next, which only consists of big platform for gondola and lifting unit
CN109591906B (en) * 2019-01-28 2021-05-04 山东建筑大学 Control system and control method for transmission tower climbing robot

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GB754318A (en) * 1954-09-10 1956-08-08 United States Steel Corp Means for exerting longitudinal thrust on a column, caisson or the like
FR1326450A (en) * 1962-03-26 1963-05-10 Elevator
FR1358500A (en) * 1963-03-04 1964-04-17 Device intended to move people or loads of any kind
DE1295780B (en) * 1967-04-17 1969-05-22 Loeoeck Willi Climbing device for masts, trees and chimneys
FR1590433A (en) * 1968-10-31 1970-04-13

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GB754318A (en) * 1954-09-10 1956-08-08 United States Steel Corp Means for exerting longitudinal thrust on a column, caisson or the like
FR1326450A (en) * 1962-03-26 1963-05-10 Elevator
FR1358500A (en) * 1963-03-04 1964-04-17 Device intended to move people or loads of any kind
DE1295780B (en) * 1967-04-17 1969-05-22 Loeoeck Willi Climbing device for masts, trees and chimneys
FR1590433A (en) * 1968-10-31 1970-04-13

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2150913A (en) * 1983-08-09 1985-07-10 Hugh Kane Self propelled carriage
WO1992004269A1 (en) * 1990-08-31 1992-03-19 Guy Vandal Pole climbing robot
EP0542168A1 (en) * 1991-11-15 1993-05-19 Alce Garden S.r.l. Self-propelled vehicle for climbing along pole-shaped elements, such as tree trunks, poles and the like
US5351783A (en) * 1991-11-15 1994-10-04 Alcegarden S.R.L. Self-propelled vehicle for climbing along pole-shaped elements, such as tree trunks, poles and the like
DE4413165A1 (en) * 1994-04-15 1995-10-19 Rexroth Mannesmann Gmbh Hydraulic lift for raising and lowering loads
ES2194552A1 (en) * 1999-03-30 2003-11-16 Gen Elevadores Xxi S L Vertical transport device has climbing mechanism, preferably for single family houses, and has traction climbing system acting on cylindrical guides running through floors to be served
EP1110903A1 (en) * 1999-12-16 2001-06-27 TecSec Europe Limited Equipment deployment method and apparatus
US6868598B2 (en) 1999-12-16 2005-03-22 Tecsec Europe Limited Equipment deployment method and apparatus
FR2900140A1 (en) * 2006-04-24 2007-10-26 Manuel Machado Lift e.g. goods-lift, driving and securing device for e.g. scaffolding work, has blockers successively released and pushed by distribution device and shaft, where one blocker acts on reinforcements and thrust plate moving cage along rails
WO2007125188A1 (en) * 2006-04-24 2007-11-08 Manuel Machado Driving and safety device for an elevator
RU2458845C2 (en) * 2006-09-28 2012-08-20 Отис Элевейтэ Кампэни Device for manual adjustment of long object vertical displacement
US10364128B2 (en) 2006-09-28 2019-07-30 Otis Elevator Company Method of installing a vertically extending member in an elevator system
GB2455683B (en) * 2006-09-28 2011-09-21 Otis Elevator Co Assembly for roping an elevator
GB2455683A (en) * 2006-09-28 2009-06-24 Otis Elevator Co Assembly for roping an elevator
WO2008039199A1 (en) * 2006-09-28 2008-04-03 Otis Elevator Company Assembly for roping an elevator
US9604823B2 (en) 2006-09-28 2017-03-28 Otis Elevator Company Assembly for roping an elevator
WO2012089760A1 (en) * 2010-12-29 2012-07-05 Daniel Mertl Conveying means for loads or persons
CN106586914A (en) * 2017-02-24 2017-04-26 黄启东 Pole climbing lifter
CN106586914B (en) * 2017-02-24 2019-03-12 黄启东 Pole-climbing lifter
CN108868089A (en) * 2018-07-17 2018-11-23 李秀英 A kind of Construction of Steel Structure platform
CN111228756A (en) * 2020-02-21 2020-06-05 晁志兵 Working method of bearing type power maintenance climbing device
CN111228756B (en) * 2020-02-21 2021-12-14 山东亿博光电科技有限公司 Working method of bearing type power maintenance climbing device
CN112316389A (en) * 2020-10-15 2021-02-05 南京舟前扬商贸有限公司 Make things convenient for communication tower to overhaul with device that descends after climbing
CN112265946A (en) * 2020-11-04 2021-01-26 国网河北省电力有限公司邢台市任泽区供电分公司 Electric pole climbing device for field electric power overhaul
CN112864955A (en) * 2021-04-13 2021-05-28 合肥工业大学 Threading device of space truss communication cable
CN112864955B (en) * 2021-04-13 2022-12-23 合肥工业大学 Threading device of space truss communication cable
CN112909827A (en) * 2021-04-15 2021-06-04 云南电网有限责任公司电力科学研究院 Power transmission line inspection robot without changing line and crossing tower and tower crossing method
CN112909827B (en) * 2021-04-15 2022-06-07 云南电网有限责任公司电力科学研究院 Power transmission line inspection robot without changing line and crossing tower and tower crossing method
CN113511280A (en) * 2021-07-05 2021-10-19 中国矿业大学 Steel wire rope climbing robot

Also Published As

Publication number Publication date
EP0006076B1 (en) 1984-04-04
DE2966868D1 (en) 1984-05-10
ATA389279A (en) 1982-12-15
AT371950B (en) 1983-08-10

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