EP0403410A1 - Fixed or mobile telescopic platform - Google Patents
Fixed or mobile telescopic platform Download PDFInfo
- 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
- Authority
- EP
- European Patent Office
- Prior art keywords
- profiles
- elements
- rollers
- pads
- nacelle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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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
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
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.
- 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
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
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
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
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)
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)
Publication Number | Publication Date |
---|---|
EP0403410A1 true EP0403410A1 (en) | 1990-12-19 |
Family
ID=9382788
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90450009A Withdrawn EP0403410A1 (en) | 1989-06-13 | 1990-06-13 | Fixed or mobile telescopic platform |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0403410A1 (en) |
FR (1) | FR2648123B1 (en) |
Cited By (2)
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 |
Citations (6)
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 |
-
1989
- 1989-06-13 FR FR8907991A patent/FR2648123B1/en not_active Expired - Lifetime
-
1990
- 1990-06-13 EP EP90450009A patent/EP0403410A1/en not_active Withdrawn
Patent Citations (6)
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)
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
Publication number | Publication date |
---|---|
FR2648123B1 (en) | 1991-10-11 |
FR2648123A1 (en) | 1990-12-14 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE ES GB IT LI |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 19910620 |