EP0403410A1 - Fixed or mobile telescopic platform - Google Patents

Fixed or mobile telescopic platform Download PDF

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Publication number
EP0403410A1
EP0403410A1 EP90450009A EP90450009A EP0403410A1 EP 0403410 A1 EP0403410 A1 EP 0403410A1 EP 90450009 A EP90450009 A EP 90450009A EP 90450009 A EP90450009 A EP 90450009A EP 0403410 A1 EP0403410 A1 EP 0403410A1
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EP
European Patent Office
Prior art keywords
profiles
elements
rollers
pads
nacelle
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EP90450009A
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German (de)
French (fr)
Inventor
Claude Allemane
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Individual
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Individual
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    • 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

Definitions

  • the present invention relates to a lifting platform constituting a working level of fixed or mobile variable height.
  • Lifting platforms are known which are maintained in the upper part of a mast made up of telescopic elements sliding on one another by means of slides enclosing said elements, the latter being solicited in elevation by means of a cable and winch, this type of platform has a drawback in terms of both transverse and longitudinal stability due to the play between the elements and the slides.
  • the object of the invention is to overcome the drawback previously explained.
  • the invention relates to a mobile lifting platform or nacelle held at the end of a telescopic mast secured to a seat constituting the mast foot resting on the ground by means of wheels, said mast being made up of interlocking elements and sliding between them, each element consisting of two parallel metal uprights each composed of two metal profiles, interconnected at a spacing defined by means of spacers allowing the passage of one of the profiles of one of the successive elements, the guidance of which is obtained and maintained by means of rollers or pads contained inside the profiles bearing on the wings, said pads or rollers being integral with the spacers, the sliding and displacement of the elements between them are achieved by means of a cylinder integral with the seat, the rod of which is connected to the first sliding element, the simultaneous displacement of the other concentric elements being obtained by tra nsmissions with chain which ensure the support in support of the rollers or skids on the wings of the profiles.
  • the lifting platform or nacelle has a seat 1 resting on the ground by means of self-locking wheels 2, on the seat 1 is fixed an element 3 constituting the mast foot, it comprises two 4 parallel metal tubular profiles connected together along the transverse axis of the seat 1 by braces 5, each profile 4 towards its front along the longitudinal axis of the seat 1 is doubled by a metal profile 6 of shaped section of C or U, their open side facing each other, said profiles 6 are connected to profiles 4 by means of spacers 7, the spacing of profiles 4 and 6 between them is such that it allows the passage and the sliding of 'a profile 8 of a movable concentric element 9, in order to stiffen the mast base, the profiles 6 are extended along the longitudinal axis by braces 1a fixed on the seat 1.
  • the concentric element 9 consists of two rear metal profiles 8 having a C or U-shaped section, their open faces being opposite while their backs are connected as previously described by braces 5 along the transverse axis of the seat 1, said profiles 8 are doubled at their front along the longitudinal axis of seat 1 by a second profile 10 of C or U-shaped section and whose open faces face each other, the profiles 10 are connected to the profiles 8 by means of spacers 7, the spacing of the profiles 8 and 10 between them is such that it allows the passage and sliding of another profile of an element itself sliding and concentric successive as well as that of the profile 6 outside of element 3 and this up to the last element 11 at the end of which is fixed the platform 12 constituting the nacelle, said element 11 is also constituted by two rear profiles 13 of section in the form of C or U, their faces open rtes being opposite and their backs connected by bracing braces 5 along the transverse axis of the seat 1, the profiles 13 are each doubled by a profile 14 of tubular section, the spacing of the profiles 13 and 14
  • the displacement of the movable sliding elements 9, intermediate and 11, is obtained by means of a hydraulic cylinder 20 for example, whose barrel 21 is integral with the seat 1 and the rod 22 connected to the element 9, the other elements concentric being connected by means of chain transmissions 23 for example fixed on the crosspieces 24a, 24b, of said elements, so as to facilitate the raising or lowering of said elements said transmissions are supported on pulleys 5.
  • the action of the jack 20 which generates the displacement of the element 9 simultaneously causes the displacement of the other elements until the platform 12 of the nacelle is at the desired height, the longitudinal stability of the nacelle is obtained thanks to the chain transmissions 23 whose traction generates the support of the rollers or pads 16 inside the wings of the profiles 6, 8, 10 and 13.
  • one or more parallel mast platform supports can be arranged and maintained so as to be able to obtain different platform heights for simultaneous work.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Motorcycle And Bicycle Frame (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Abstract

The subject of the invention is an elevating platform (12) or nacelle held at the end of an upper element (11) sliding in an intermediate element (9) itself sliding in a fixed element (3) integral with a base (1) resting on the ground by way of wheels (2), the elevation of the platform (12) or nacelle being obtained by means of a jack (20), the shaft (21) integral with the base (1) and the rod (12) of the first intermediate element (9), the other concentric intermediate and upper elements (11) being driven simultaneously by means of chain drives (23). <IMAGE>

Description

La présente invention concerne une plateforme élévatrice constituant un niveau de travail de hauteur variable fixe ou mobile.The present invention relates to a lifting platform constituting a working level of fixed or mobile variable height.

On connaît des plateformes élévatrices maintenues en partie supérieure d'un mât constitué d'éléments télescopiques coulissant les uns sur les autres au moyen de glissières enserrant lesdits éléments, ces derniers étant solicités en élévation au moyen d'un câble et treuil, ce type de plateforme présente un inconvénient au niveau de la stabilité tant transversale que longitudinale du au fait du jeu entre les éléments et les glissières.Lifting platforms are known which are maintained in the upper part of a mast made up of telescopic elements sliding on one another by means of slides enclosing said elements, the latter being solicited in elevation by means of a cable and winch, this type of platform has a drawback in terms of both transverse and longitudinal stability due to the play between the elements and the slides.

L'invention a pour but de palier à l'inconvénient précédemment exposé.The object of the invention is to overcome the drawback previously explained.

L'invention a pour objet une plateforme élévatrice mobile ou nacelle maintenue en l'extrémité d'un mât télescopique solidaire d'une assise constituant le pied de mât reposant au sol au moyen de roues, ledit mât étant constitué d'éléments s'emboîtant et coulissant entre eux, chaque élément étant constitué de deux montants métalliques parallèles composés chacun de deux profils métalliques, reliés entre eux à un écartement défini au moyen d'entretoises permettant le passage d'un des profils d'un des éléments successifs dont le guidage est obtenu et maintenu au moyen de galets ou patins contenus à l'intérieur des profils en appui sur les ailes, lesdits patins ou galets étant solidaires des entretoises, le coulissement et déplacement des éléments entre eux sont réalisés au moyen d'un vérin solidaire de l'assise dont la tige est reliée au premier élément coulissant, le déplacement simultané des autres éléments concentriques étant obtenu par des transmissions à chaîne qui assurent le maintien en appui des galets ou patins sur les ailes des profils.The invention relates to a mobile lifting platform or nacelle held at the end of a telescopic mast secured to a seat constituting the mast foot resting on the ground by means of wheels, said mast being made up of interlocking elements and sliding between them, each element consisting of two parallel metal uprights each composed of two metal profiles, interconnected at a spacing defined by means of spacers allowing the passage of one of the profiles of one of the successive elements, the guidance of which is obtained and maintained by means of rollers or pads contained inside the profiles bearing on the wings, said pads or rollers being integral with the spacers, the sliding and displacement of the elements between them are achieved by means of a cylinder integral with the seat, the rod of which is connected to the first sliding element, the simultaneous displacement of the other concentric elements being obtained by tra nsmissions with chain which ensure the support in support of the rollers or skids on the wings of the profiles.

D'autres caractéristiques et avantages de l'invention ressortiront plus clairement de la description qui va suivre faite en regard des dessins joints donnés à titre d'exemple non limitatifs,où :

  • - la figure 1 est une vue en élévation de côté d'une plateforme ou nacelle dont le mât est en partie déployé,
  • - la figure 2, une vue arrière de la plateforme ou nacelle représentée figure 1,
  • - la figure 3, une vue en coupe des éléments constituant le mât.
Other characteristics and advantages of the invention will emerge more clearly from the description which follows, given with reference to the accompanying drawings given by way of nonlimiting example, where:
  • FIG. 1 is a side elevation view of a platform or nacelle, the mast of which is partially deployed,
  • FIG. 2, a rear view of the platform or nacelle shown in FIG. 1,
  • - Figure 3, a sectional view of the elements constituting the mast.

Tel que représenté figures 1 à 3, la plateforme élévatrice ou nacelle comporte une assise 1 reposant au sol par l'intermédiaire de roues 2 auto-bloquantes, sur l'assise 1 est fixé un élément 3 constituant le pied de mât, il comporte deux profils tubulaires métalliques 4 parallèles reliés entre eux selon l'axe transversal de l'assise 1 par des contreventements 5, chaque profil 4 vers son avant selon l'axe longitudinal de l'assise 1 est doublé par un profil métallique 6 de section en forme de C ou de U, leur côté ouvert se faisant face, lesdits profils 6 sont reliés aux profils 4 au moyen d'entretoises 7, l'écartement des profils 4 et 6 entre eux est tel qu'il permet le passage et le coulissement d'un profil 8 d'un élément con­centrique mobile 9, afin de rigidifier le pied de mât les profils 6 sont prolongés selon l'axe longitudinal par des contreventements 1a fixés sur l'assise 1.As shown in Figures 1 to 3, the lifting platform or nacelle has a seat 1 resting on the ground by means of self-locking wheels 2, on the seat 1 is fixed an element 3 constituting the mast foot, it comprises two 4 parallel metal tubular profiles connected together along the transverse axis of the seat 1 by braces 5, each profile 4 towards its front along the longitudinal axis of the seat 1 is doubled by a metal profile 6 of shaped section of C or U, their open side facing each other, said profiles 6 are connected to profiles 4 by means of spacers 7, the spacing of profiles 4 and 6 between them is such that it allows the passage and the sliding of 'a profile 8 of a movable concentric element 9, in order to stiffen the mast base, the profiles 6 are extended along the longitudinal axis by braces 1a fixed on the seat 1.

L'élément concentrique 9 est constitué de deux profils métalliques arrières 8 présentant une section en forme de C ou de U, leurs faces ouvertes étant opposées tandis que leurs dos sont reliés comme précédemment décrit par des contreventements 5 selon l'axe transversal de l'assise 1, lesdits profils 8 sont doublés en leur avant selon l'axe longitudinal de l'assise 1 par un second profil 10 de section en forme de C ou U et dont les faces ouvertes se font face, les profils 10 sont reliés aux profils 8 au moyen d'entretoises 7, l'écartement des profils 8 et 10 entre eux est tel qu'il permet le passage et le coulissement d'un autre profil d'un élément lui-même coulissant et concentrique successif ainsi que celui du profil 6 extérieur de l'élément 3 et ce jusqu'au dernier élément 11 en bout duquel est fixée la plateforme 12 constituant la nacelle, ledit élément 11 est lui aussi constitué par deux profils arrières 13 de section en forme de C ou U, leurs faces ouvertes étant opposées et leurs dos reliés par des contrevente contreventements 5 selon l'axe transversal de l'assise 1, les profils 13 sont doublés chacun par un profil 14 de section tubulaire, l'écartement des profils 13 et 14 et leur maintien au moyen des entretoises 7 est réalisé comme précédemment décrit et il est tel qu'il permet le passage et le coulissement des profils arrières de l'élément précédent.The concentric element 9 consists of two rear metal profiles 8 having a C or U-shaped section, their open faces being opposite while their backs are connected as previously described by braces 5 along the transverse axis of the seat 1, said profiles 8 are doubled at their front along the longitudinal axis of seat 1 by a second profile 10 of C or U-shaped section and whose open faces face each other, the profiles 10 are connected to the profiles 8 by means of spacers 7, the spacing of the profiles 8 and 10 between them is such that it allows the passage and sliding of another profile of an element itself sliding and concentric successive as well as that of the profile 6 outside of element 3 and this up to the last element 11 at the end of which is fixed the platform 12 constituting the nacelle, said element 11 is also constituted by two rear profiles 13 of section in the form of C or U, their faces open rtes being opposite and their backs connected by bracing braces 5 along the transverse axis of the seat 1, the profiles 13 are each doubled by a profile 14 of tubular section, the spacing of the profiles 13 and 14 and their maintenance by means of the spacers 7 is produced as previously described and it is such that it allows the passage and sliding of the rear profiles of the previous element.

Afin de guider et maintenir les éléments mobiles concentriques 9, inter­médiaire(s), 11, etc.., entre eux, sur les entretoises supérieures 7a de l'élément 3 et 7b de l'élément 9 et intermédiaire(s), et sur les entretoises inférieures 7c des éléments 9, intermédiaire(s) et 11, sont maintenus des axes 15 de patins ou galets 16, lesdits patins ou galets 16 sont contenus à l'intérieur des profils 6, 8, 10 et 13 en appui sur les ailes desdits profils, il va de soi que les axes 15 des galets ou patins 16 passent au travers des faces ouvertes des profils et de ce fait sont alternés entre les entretoises 7a, 7b et 7c, de manière à obtenir une stabilité transversale de la nacelle et des éléments coulissant entre eux, l'extrémité 17 des axes 15 des patins ou galets 16 prend appui sur la face opposée à la face ouverte des profils 6, 8, 10, 13, l'appui est contrôlé au moyen d'un pas de vis 18 et le réglage du jeu est immobilisé au moyen d'un écrou 19.In order to guide and maintain the concentric movable elements 9, intermediate (s), 11, etc., between them, on the upper spacers 7a of the element 3 and 7b of the element 9 and intermediate (s), and on the lower spacers 7c of the elements 9, intermediate (s) and 11, are held on the axes 15 of pads or rollers 16, said pads or rollers 16 are contained inside the profiles 6, 8, 10 and 13 resting on the wings of said profiles, it goes without saying that the axes 15 of the rollers or pads 16 pass through the open faces of the profiles and therefore are alternated between the spacers 7a, 7b and 7c, so as to obtain transverse stability of the nacelle and elements sliding between them, the end 17 of the axes 15 of the pads or rollers 16 is supported on the face opposite to the open face of the profiles 6, 8, 10, 13, the support is controlled by means of a step of screws 18 and the clearance adjustment is immobilized by means of a nut 19.

Le déplacement des éléments mobiles coulissant 9, intermédiaires et 11, est obtenu au moyen d'un vérin hydraulique 20 par exemple, dont le fût 21 est solidaire de l'assise 1 et la tige 22 raccordée à l'élément 9, les autres éléments concentriques étant raccordés au moyen de transmissions par chaîne 23 par exemple fixées sur les traverses 24a, 24b, desdits éléments, de manière à faciliter l'élévation ou la descente desdits éléments lesdites transmissions sont en appui sur des poulies 5. L'action du vérin 20 qui engendre le déplacement de l'élément 9 provoque simultanément le déplacement des autres éléments jusqu'à ce que la plateforme 12 de la nacelle soit à la hauteur désirée, la stabilité longitudinale de la nacelle est obtenue grâce aux transmissions par chaîne 23 dont la traction engendre l'appui des galets ou patins 16 à l'intérieur des ailes des profils 6, 8, 10 et 13.The displacement of the movable sliding elements 9, intermediate and 11, is obtained by means of a hydraulic cylinder 20 for example, whose barrel 21 is integral with the seat 1 and the rod 22 connected to the element 9, the other elements concentric being connected by means of chain transmissions 23 for example fixed on the crosspieces 24a, 24b, of said elements, so as to facilitate the raising or lowering of said elements said transmissions are supported on pulleys 5. The action of the jack 20 which generates the displacement of the element 9 simultaneously causes the displacement of the other elements until the platform 12 of the nacelle is at the desired height, the longitudinal stability of the nacelle is obtained thanks to the chain transmissions 23 whose traction generates the support of the rollers or pads 16 inside the wings of the profiles 6, 8, 10 and 13.

Sans sortir du cadre de l'invention, sur l'assise 1, un ou plusieurs mâts parallèles supports de plateforme peuvent être disposés et maintenus de manière à pouvoir obtenir différentes hauteurs de plateforme pour des travaux simultanés.Without departing from the scope of the invention, on the seat 1, one or more parallel mast platform supports can be arranged and maintained so as to be able to obtain different platform heights for simultaneous work.

Claims (6)

1°) Plateforme élévat rice mobile ou nacelle du type maintenue en l'extrémité d'un mât doté d'éléments télescopiques solidaires d'une assise mobile caractérisée en ce que le mât est constitué d'un élément (3) fixé sur l'assise (1) reposant au sol par l'intermédiaire de roues (2) constituant le pied de mât, comportant deux profils tubulaires métalliques parallèles (4) reliés entre eux selon l'axe transversal de l'assise (1) par des contreventements (5), lesdits profils (4) vers leur avant étant doublés par un profil métallique (6) de section en forme de C ou de U leurs côtés ouverts se faisant face, les profils (4, 6) correspondant étant reliés par des entretoises (7) à un écartement tel qu'il permet le coulissement d'un profil arrière (8) d'un élément concentrique mobile (9), lesdits profils (8) de section en forme de C ou U leurs faces ouvertes opposées sont doublés en leur partie avant par un profil (10) et sont reliés par des entretoises (7) à un écartement permettant le passage d'un profil arrière d'un élément coulissant concentrique successif et celui extérieur (6) de l'élément précédent et ce jusqu'à l'élément (11) mobile et coulissant en l'extrémité duquel est fixée la plateforme (12), les éléments concentriques (9, intermédiaire(s), 11) entre eux sont guidés au moyen de patins ou galets (16) solidaires des entretoises supérieures (7a) de l'élément (3) et (7b) de l'élément (9) et (intermédiaire(s)) et sur les entretoises inférieures (7c) des éléments (3, intermédiaire(s), 11), lesdits patins ou galets (16) prenant appui à l'intérieur des ailes des profils (6, 8, 10, 13), leur axe passant au travers des faces ouvertes desdits profils, le déplacement des éléments mobiles (9, intermédiaire(s), 11) entre eux étant obtenu au moyen d'un vérin (20) solidaire de l'assise (1) et du premier élément coulissant (9), les autres éléments (intermédiaire(s), 11) étant sollicités simultanément au moyen de transmissions par chaîne (23).1) movable lifting platform or nacelle of the type maintained at the end of a mast provided with telescopic elements secured to a mobile seat characterized in that the mast consists of an element (3) fixed on the seat (1) resting on the ground by means of wheels (2) constituting the mast base, comprising two parallel metallic tubular profiles (4) interconnected along the transverse axis of the seat (1) by braces ( 5), said profiles (4) towards their front being doubled by a metal profile (6) of C or U-shaped section with their open sides facing each other, the corresponding profiles (4, 6) being connected by spacers ( 7) at a spacing such that it allows the sliding of a rear profile (8) of a mobile concentric element (9), said profiles (8) of C or U-shaped cross section, their opposite open faces are doubled in their front part by a profile (10) and are connected by spacers (7) to a n spacing allowing the passage of a rear profile of a successive concentric sliding element and the outer one (6) of the preceding element and this up to the movable and sliding element (11) at the end of which is fixed the platform (12), the concentric elements (9, intermediate (s), 11) between them are guided by means of pads or rollers (16) integral with the upper spacers (7a) of the element (3) and (7b) of the element (9) and (intermediate (s)) and on the lower spacers (7c) of the elements (3, intermediate (s), 11), said pads or rollers (16) resting inside the wings of the profiles (6, 8, 10, 13), their axis passing through the open faces of said profiles, the displacement of the mobile elements (9, intermediate (s), 11) between them being obtained by means of a jack (20) integral with the seat (1) and the first sliding element (9), the other elements (intermediate (s), 11) being stressed simultaneously by means of chain drives (23). 2°) Plateforme élévatrice mobile ou nacelle selon la revendication 1 caractérisée en ce que les éléments coulissant (9, intermédiaire(s), 11) ont les faces ouvertes des profils arrières (8, 13) et ceux des éléments (intermédiaire(s)) de section en forme de C ou U qui sont opposées et les faces ouvertes des profils avants (6, 10 ) et éléments (intermédiaire(s)) qui se font face.2) mobile lifting platform or nacelle according to claim 1 characterized in that the sliding elements (9, intermediate (s), 11) have the open faces of the rear profiles (8, 13) and those of the elements (intermediate (s) ) of C or U-shaped section which are opposite and the open faces of the front profiles (6, 10) and elements (intermediate (s)) which face each other. 3°) Plateforme élévat rice mobile ou nacelle selon les revendications 1 et 2 caractérisée en ce que les faces ouvertes des profils (6, 8, 10, 13) permettant le passage des axes (15) de maintien des galets ou patins (16) solidaires des entretoises supérieures (7a, 7b) des éléments (3, 9 et intermédiaire(s)) ou inférieures (7c) des éléments (9, intermédiaire(s), 11), lesdits galets ou patins (16) étant contenus à l'intérieur des profils (6, 8, 10, 13) en appui sur les ailes des profils.3) mobile lifting platform or nacelle according to claims 1 and 2 characterized in that the open faces of the profiles (6, 8, 10, 13) allowing the passage of the pins (15) for holding the rollers or pads (16) integral with the upper spacers (7a, 7b) of the elements (3, 9 and intermediate (s)) or lower (7c) of the elements (9, intermediate (s), 11), said rollers or pads (16) being contained inside the profiles (6, 8, 10, 13) bearing on the wings of the profiles. 4°) Plateforme élévatrice mobile ou nacelle selon les revendications 1 et 3 caractérisée en ce que les extrémités (17) des axes (15) des patins ou galets (16) prennent appui sur la face opposée à la face ouverte des profils (6, 8, 10, 13), ledit appui étant contrôlé au moyen d'un pas de vis (18) dont le réglage est immobilisé au moyen d'un écrou (19), l'appui des extrémités (17) engendrant la stabilité transversale de la nacelle par réglage du jeu.4) mobile lifting platform or nacelle according to claims 1 and 3 characterized in that the ends (17) of the axes (15) of the pads or rollers (16) bear on the face opposite to the open face of the profiles (6, 8, 10, 13), said support being controlled by means of a thread (18) whose adjustment is immobilized by means of a nut (19), the support of the ends (17) generating the transverse stability of the nacelle by adjusting the clearance. 5°) Plateforme élévatrice mobile ou nacelle selon la revendication 1 caractérisée en ce que les transmissions par chaîne (23) provoquant le déplacement simultané des éléments (intermédiaire(s), 11) ont leurs extrémitées fixées sur les traverses (24a, 24b, 24c) et sont en appui sur des poulies (25) solidaires des traverses supérieures (24c).5 °) mobile lifting platform or nacelle according to claim 1 characterized in that the chain drives (23) causing the simultaneous displacement of the elements (intermediate (s), 11) have their ends fixed on the sleepers (24a, 24b, 24c ) and are supported on pulleys (25) integral with the upper crosspieces (24c). 6°) Plateforme élévatrice mobile ou nacelle selon les revendications 1 et 5 caractérisée en ce que la traction des transmissions par chaîne (23) engendre l'appui des galets ou patins (16) à l'intérieur des ailes des profils (6, 8, 10, 13) et de ce fait la stabilité longitudinale.6 °) mobile lifting platform or nacelle according to claims 1 and 5 characterized in that the traction of the chain drives (23) generates the support of the rollers or pads (16) inside the wings of the profiles (6, 8 , 10, 13) and thereby the longitudinal stability.
EP90450009A 1989-06-13 1990-06-13 Fixed or mobile telescopic platform Withdrawn EP0403410A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8907991A FR2648123B1 (en) 1989-06-13 1989-06-13 FIXED OR MOBILE TELESCOPIC PLATFORM
FR8907991 1989-06-13

Publications (1)

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EP0403410A1 true EP0403410A1 (en) 1990-12-19

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EP90450009A Withdrawn EP0403410A1 (en) 1989-06-13 1990-06-13 Fixed or mobile telescopic platform

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EP (1) EP0403410A1 (en)
FR (1) FR2648123B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2717456A1 (en) * 1994-03-16 1995-09-22 Cimm Self-propelled hoist for maintenance, cleaning or inspection personnel
CN112408285A (en) * 2020-11-28 2021-02-26 周琼 Welding system suitable for high-altitude operation

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2881031A (en) * 1955-10-17 1959-04-07 Allis Chalmers Mfg Co Guide rollers for lift truck carriage
US2997721A (en) * 1959-06-08 1961-08-29 Grand Specialties Corp Over-head service and cleaning apparatus
US4015686A (en) * 1973-01-29 1977-04-05 Bushnell Jr Sherman W Portable multi-stage mechanical list
FR2474009A1 (en) * 1980-01-18 1981-07-24 Allemane Claude Work platform with telescopic frame - has box-like parts sliding inside each other with section reduced before sliding starts
US4484663A (en) * 1981-02-12 1984-11-27 Bil-Jax, Inc. Portable personnel platform lift
DE3635881A1 (en) * 1986-04-24 1987-10-29 Lang Hans Peter Apparatus with a lifting platform

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2881031A (en) * 1955-10-17 1959-04-07 Allis Chalmers Mfg Co Guide rollers for lift truck carriage
US2997721A (en) * 1959-06-08 1961-08-29 Grand Specialties Corp Over-head service and cleaning apparatus
US4015686A (en) * 1973-01-29 1977-04-05 Bushnell Jr Sherman W Portable multi-stage mechanical list
FR2474009A1 (en) * 1980-01-18 1981-07-24 Allemane Claude Work platform with telescopic frame - has box-like parts sliding inside each other with section reduced before sliding starts
US4484663A (en) * 1981-02-12 1984-11-27 Bil-Jax, Inc. Portable personnel platform lift
DE3635881A1 (en) * 1986-04-24 1987-10-29 Lang Hans Peter Apparatus with a lifting platform

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2717456A1 (en) * 1994-03-16 1995-09-22 Cimm Self-propelled hoist for maintenance, cleaning or inspection personnel
CN112408285A (en) * 2020-11-28 2021-02-26 周琼 Welding system suitable for high-altitude operation

Also Published As

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FR2648123B1 (en) 1991-10-11
FR2648123A1 (en) 1990-12-14

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