EP0277078B1 - Telescopic mast for an overhead travelling crane - Google Patents
Telescopic mast for an overhead travelling crane Download PDFInfo
- Publication number
- EP0277078B1 EP0277078B1 EP88420016A EP88420016A EP0277078B1 EP 0277078 B1 EP0277078 B1 EP 0277078B1 EP 88420016 A EP88420016 A EP 88420016A EP 88420016 A EP88420016 A EP 88420016A EP 0277078 B1 EP0277078 B1 EP 0277078B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shafts
- telescopic mast
- barrel
- pulleys
- faces
- 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.)
- Expired - Lifetime
Links
- 238000005192 partition Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000004584 weight gain Effects 0.000 description 1
- 235000019786 weight gain Nutrition 0.000 description 1
Images
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
- an overhead crane with a telescopic mast is used, the elementary drums of which develop towards the ground.
- Such a device is used, for example, for aircraft maintenance, the operator being mounted on a platform or nacelle in cantilever associated with the lower part of the last barrel with respect to which it can change orientation.
- DE-C-3 528 996 describes a telescopic mast for overhead traveling cranes comprising several drums of polygonal section, one of which is fixed while the others slide by means of main and auxiliary cables passing over pulleys, the sides of a barrel carrying means for guiding the neighboring barrel.
- telescopic assemblies also comprising several elements movable relative to each other by means of cables and pulleys as well as guide means.
- the invention makes it possible to solve these problems and relates to an improvement to the masts subject of DE-C-3 528 996, the mast according to the invention being characterized in that the pulleys for the passage of the auxiliary cables are located on three nonadjacent faces of the barrels distributed angularly in a regular manner with respect to the geometric axis of these barrels and in that the means for guiding the latter are disposed on three other nonadjacent faces.
- the barrels are produced by means of a tubular lattice frame with a hexagonal section, three partitions of each barrel not adjacent carrying the guides, while the pulleys are supported by the other three partitions.
- Fig. 4 is a partial view in large scale of one of the telescopic elements in the isolated state.
- an overhead crane 1 intended to move by means of wheels 2 supported on raceways 3, said overhead crane being provided with a carriage 4 suitable for moving transversely by means of wheels 5, relative to the main beam of the overhead crane.
- the carriage 4 is secured to a telescopic mast 6 produced by means of a number of drums sliding one inside the other.
- the chassis of the carriage 4 is associated with a fixed barrel 7 in which a first barrel 8 can slide, which encloses a second barrel 9 in which an extreme barrel 10 can move, the lower end of which is secured to a platform or nacelle 11.
- the barrel 10 is integral with an orientation ring 11a which cooperates with a pinion 12 carried by a geared motor 13 to ensure the rotation of the platform or nacelle relative to the barrel 10.
- auxiliary cables 14 whose ends are attached to the upper end on the one hand of any barrel and on the other hand of that of the barrel located at the outside of the one around him directly.
- one of the ends 14a of the cable 14 is attached to the carriage 4, then this cable passes around a pulley 15 carried by the interior of the barrel 8 located immediately inside that 7, then the other end 14b of this cable is attached to the top of the barrel 9 located in that 8.
- a second cable 16 is attached by one of its ends 16a to the upper end of the barrel 8, then it passes around a pulley 17 associated with the barrel 9, its other end 16b being fixed to the upper end of the last barrel 10.
- each barrel has in cross section the shape of a hexagon, so that there are three cables 14 and three cables 16 located opposite three non-adjacent faces and angularly distributed so regular with respect to the geometric axis of the barrels.
- the other three faces of the latter are intended for their angular guidance.
- the partitions of the drums which are not arranged opposite the pulleys 15 and 17, that is to say those which are placed between the three aforementioned faces carry on their outer walls a guide rail 18.
- These rails are respectively carried by the drums 8, 9 and 10 (fig. 2).
- the internal walls of the corresponding partitions of the drums 7, 8 and 9 carry two superimposed rows of rollers 19 which roll on the rails 18.
- the deployment of the drums is carried out by gravity.
- Main cables 20 leave from a winch 4a of the carriage 4 to cooperate with pulleys 21 mounted at the top of the barrel 10, in order to control the speed of movement synchronized by gravity of said barrels.
- the main cables 20 are wound in the known manner so as to reassemble the barrel 10 which, via the cables 16 and 14, ensures the synchronized movement of the barrels upwards. We will not return to this way of proceeding, which is well known in practice.
- each box 22 is produced by means of two tubes of rectangular or similar section 23a, 23b oriented obliquely and joined by means of two sheets, one internal 23c and the other external 23d.
- the outer faces of the drums can be coated with solid panels illustrated more particularly in FIG. 3.
- a telescopic mast for an overhead crane has thus been produced which has a structure capable of absorbing the forces due to the rotation of the platform by means of a guide on three rails fixed to the faces of a tubular lattice frame allowing significant weight gain, said guide also ensuring the resumption of bending forces when the nacelle 11 is mounted cantilevered.
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
- Earth Drilling (AREA)
- Walking Sticks, Umbrellas, And Fans (AREA)
- Switches With Compound Operations (AREA)
- Holders For Apparel And Elements Relating To Apparel (AREA)
- Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
Description
Lorsque l'on doit effectuer des opérations à des endroits précis, on utilise un pont roulant à mât télescopique dont les fûts élémentaires se développent en direction du sol. On utilise un tel engin par exemple pour l'entretien des avions, l'intervenant étant monté sur une plateforme ou nacelle en porte- à-faux associée à la partie inférieure du dernier fût par rapport à laquelle elle peut changer d'orientation.When operations must be carried out at specific locations, an overhead crane with a telescopic mast is used, the elementary drums of which develop towards the ground. Such a device is used, for example, for aircraft maintenance, the operator being mounted on a platform or nacelle in cantilever associated with the lower part of the last barrel with respect to which it can change orientation.
Ce mouvement de la plateforme ou nacelle entraîne sur les fûts des efforts de torsion et de flexion, tant et si bien que l'on doit prévoir des moyens d'absorber ces efforts sans nuire au bon fonctionnement de l'ensemble.This movement of the platform or nacelle causes torsions and bending forces on the barrels, so much so that means must be provided to absorb these forces without affecting the proper functioning of the assembly.
Le DE-C-3 528 996 décrit un mât télescopique pour ponts roulants comprenant plusieurs fûts à section polygonale, dont l'un est fixe tandis que les autres coulissent grâce à des câbles principaux et auxiliaires passant sur des poulies, les côtés d'un fût portant des moyens de guidage du fût voisin.DE-C-3 528 996 describes a telescopic mast for overhead traveling cranes comprising several drums of polygonal section, one of which is fixed while the others slide by means of main and auxiliary cables passing over pulleys, the sides of a barrel carrying means for guiding the neighboring barrel.
Pour d'autres applications, il a été proposé dans le DE-C-921 172 et le FR-A-2 448 606, des ensembles télescopiques comprenant également plusieurs éléments déplaçable les uns par rapport aux autres au moyen de câbles et de poulies ainsi que des moyens de guidage.For other applications, it has been proposed in DE-C-921 172 and FR-A-2 448 606, telescopic assemblies also comprising several elements movable relative to each other by means of cables and pulleys as well as guide means.
Les solutions décrites dans ces documents, même si un homme du métier pensait à les transposer pour la réalisation d'un mât télescopique pour ponts roulants, ne permettent cependant pas de réaliser une structure légère susceptible de reprendre les efforts dûs à la rotation de la plateforme ainsi que d'assurer la reprise des efforts de flexion lorsque la nacelle est montée en porte à faux.The solutions described in these documents, even if a person skilled in the art thought of transposing them for the production of a telescopic mast for overhead traveling cranes, do not however make it possible to produce a light structure capable of absorbing the forces due to the rotation of the platform as well as ensuring the resumption of bending forces when the nacelle is mounted cantilevered.
L'invention permet de résoudre ces problèmes et concerne un perfectionnement aux mâts faisant l'objet du DE-C-3 528 996, le mât selon l'invention se caractérisant en ce que les poulies pour le passage des câbles auxiliaires sont situées sur trois faces non adjacentes des fûts répartis angulairement de manière régulière par rapport à l'axe géométrique de ces fûts et en ce que les moyens de guidage de ces derniers sont disposés sur trois autres faces non adjacentes.The invention makes it possible to solve these problems and relates to an improvement to the masts subject of DE-C-3 528 996, the mast according to the invention being characterized in that the pulleys for the passage of the auxiliary cables are located on three nonadjacent faces of the barrels distributed angularly in a regular manner with respect to the geometric axis of these barrels and in that the means for guiding the latter are disposed on three other nonadjacent faces.
Dans un mode d'exécution préféré, les fûts sont réalisés au moyen d'une ossature en treillis tubulaire à section hexagonale, trois cloisons de chaque fût non adjacentes portant les guidages, tandis que les poulis sont supportées par les trois autres cloisons.In a preferred embodiment, the barrels are produced by means of a tubular lattice frame with a hexagonal section, three partitions of each barrel not adjacent carrying the guides, while the pulleys are supported by the other three partitions.
Le dessin annexé, donné à titre d'exemple, permettra de mieux comprendre l'invention, les caractéristiques qu'elle présente et les avantages qu'elle est susceptible de procurer:
- - la figure 1 est une vue générale d'un pont roulant pourvu d'un mât vertical établi conformément à l'invention et dont les éléments télescopiques ont été représentés en coupe;
- - la figure 2 en est une vue en bout dans laquelle on a supprimé la plateforme extrême;
- - la figure 3 est une vue en élévation du mât télescopique suivant l'invention.
- - Figure 1 is a general view of an overhead crane provided with a vertical mast established in accordance with the invention and whose telescopic elements have been shown in section;
- - Figure 2 is an end view in which we removed the end platform;
- - Figure 3 is an elevational view of the telescopic mast according to the invention.
Fig. 4 est une vue partielle à grande éhcelle d'un des éléments télescopiques à l'état isolé.Fig. 4 is a partial view in large scale of one of the telescopic elements in the isolated state.
On a représenté en fig. 1 un pont roulant 1 destiné à se déplacer au moyen de roues 2 prenant appui sur des chemins de roulement 3, ledit pont roulant étant pourvu d'un chariot 4 propre à se déplacer transversalement grâce à des roues 5, par rapport à la poutre principale du pont roulant.There is shown in fig. 1 an
Dans le mode d'exécution représenté, le chariot 4 est solidaire d'un mât télescopique 6 réalisé au moyen d'un certain nombre de fûts coulissant les uns dans les autres.In the embodiment shown, the
Le châssis du chariot 4 est associé à un fût fixe 7 dans lequel peut coulisser un premier fût 8 qui renferme un deuxième fût 9 dans lequel peut se déplacer un fût extrême 10 dont l'extrémité inférieure est solidaire d'une plateforme ou nacelle 11. Le fût 10 est solidaire d'une couronne d'orientation 11a qui coopère avec un pignon 12 porté par un moto-réducteur 13 pour assurer la rotation de la plateforme ou nacelle par rapport au fût 10.The chassis of the
A la manière connue, le coulissement des fûts s'effectue grâce à des cables auxiliaires 14 dont les bouts sont attachés à l'extrémité supérieure d'une part d'un fût quelconque et d'autre part de celle du fût situé à l'extérieur de celui qui l'entoure directement. Autrement dit, l'un des bouts 14a du câble 14 est attaché au chariot 4, puis ce câble passe autour d'une poulie 15 portée par l'intérieur du fût 8 situé immédiatement à l'intérieur de celui 7, puis l'autre bout 14b de ce câble est attaché en haut du fût 9 situé dans celui 8. De manière semblable, un second câble 16 est attaché par un de ses bouts 16a à l'extrémité supérieure du fût 8, puis il passe autour d'une poulie 17 associée au fût 9, son autre bout 16b étant fixé à l'extrémité supérieure du dernier fût 10.In the known manner, the sliding of the barrels is carried out by means of
Conformément à l'invention, chaque fût présente en section transversale la forme d'un hexagone, de telle sorte qu'il existe trois câbles 14 et trois câbles 16 situés en vis-à-vis de trois faces non adjacentes et réparties angulairement de manière régulière par rapport à l'axe géomé trique des fûts.According to the invention, each barrel has in cross section the shape of a hexagon, so that there are three
Les trois autres faces de ces derniers sont destinées à leur guidage angulaire. A cet effet, les cloisons des fûts qui ne sont pas disposées en vis-à-vis des poulies 15 et 17, c'est-à-dire celles qui sont placées entre les trois faces précitées portent sur leurs parois extérieures un rail de guidage 18. Ces rails sont respectivement portés par les fûts 8, 9 et 10 (fig. 2). Les parois intérieures des cloisons correspondantes des fûts 7, 8 et 9 portent quant à elles deux rangées superposées de galets 19 qui roulent sur les rails 18.The other three faces of the latter are intended for their angular guidance. For this purpose, the partitions of the drums which are not arranged opposite the
On a illustré en fig. 3 la position des deux rangées de galets 19 de chaque fût 7 à 9, ainsi que celle des poulies 15 et 17 associées respectivement aux fûts 9 et 8. On consiste que les deux rangées de galets se trouvent pratiquement à l'extrémité libre de chaque fût 7, 8 et 9. Les poulies 15 et 17 se trouvent avantageusement situées dans la partie basse des fûts 8 et 9.Illustrated in fig. 3 the position of the two rows of
Dans le mode d'exécution représenté, le déploiement des fûts s'effectue par gravité. Des câbles principaux 20 partent d'un treuil 4a du chariot 4 pour venir coopérer avec des poulies 21 montées au sommet du fût 10, en vue de contrôler la vitesse de déplacement synchronisée par gravité desdits fûts. Au contraire, lors de la contraction du mât, les câbles principaux 20 sont enroulés à la manière connue de façon à remonter le fût 10 qui, par l'intermédiaire des câbles 16 et 14, assure le déplacement synchronisé des fûts vers le haut. On ne reviendra pas sur cette manière de procéder qui est bien connue dans la pratique.In the embodiment shown, the deployment of the drums is carried out by gravity.
Comme illustré en fig. 2 et 4 tous les fûts sont réalisés au moyen de plusieurs cloisons en treillis tubulaire, de caissons d'accouplement longitudinaux 22 formant les éléments d'assemblage des tubes 23 transversaux et obliques à chacun des angles des fûts. On observe que chaque caisson 22 est réalisé au moyen de deux tubes à section rectangulaire ou analogue 23a, 23b orientés obliquement et réunis au moyen de deux tôles, l'une interne 23c et l'autre externe 23d.As illustrated in fig. 2 and 4 all the drums are produced by means of several tubular lattice partitions, of
De manière que les ossatures en treillis n'apparaissent pas, l'on peut revêtir les faces extérieures des fûts de panneaux pleins illustrés plus particulièrement en fig. 3.So that the lattice frameworks do not appear, the outer faces of the drums can be coated with solid panels illustrated more particularly in FIG. 3.
On a ainsi réalisé un mât télescopique pour pont roulant présentant une structure susceptible de reprendre les efforts dûs à la rotation de la plateforme grâce à un guidage sur trois rails fixés sur les faces d'une ossature en treillis tubulaire permettant un gain important de poids, ledit guidage assurant également la reprise des efforts de flexion lorsque la nacelle 11 est montée en porte à faux.A telescopic mast for an overhead crane has thus been produced which has a structure capable of absorbing the forces due to the rotation of the platform by means of a guide on three rails fixed to the faces of a tubular lattice frame allowing significant weight gain, said guide also ensuring the resumption of bending forces when the
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT88420016T ATE57165T1 (en) | 1987-01-20 | 1988-01-20 | TELESCOPIC COLUMN FOR OVERHEAD CRANES. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8700745A FR2609701B1 (en) | 1987-01-20 | 1987-01-20 | TELESCOPIC MAT, ESPECIALLY FOR ROLLING BRIDGES |
| FR8700745 | 1987-01-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0277078A1 EP0277078A1 (en) | 1988-08-03 |
| EP0277078B1 true EP0277078B1 (en) | 1990-10-03 |
Family
ID=9347174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP88420016A Expired - Lifetime EP0277078B1 (en) | 1987-01-20 | 1988-01-20 | Telescopic mast for an overhead travelling crane |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0277078B1 (en) |
| AT (1) | ATE57165T1 (en) |
| DE (1) | DE3860708D1 (en) |
| ES (1) | ES2018631B3 (en) |
| FR (1) | FR2609701B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103625869A (en) * | 2013-12-13 | 2014-03-12 | 李平 | Lifting mechanism and dish delivery device with same |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2640607B1 (en) * | 1988-12-19 | 1991-05-17 | Cga Hbs | LOAD LIFTING DEVICE |
| FR2642059A1 (en) * | 1988-12-29 | 1990-07-27 | Ipr Productique Sarl | Translation control device, particularly for a handling assembly |
| EP0533977A1 (en) * | 1991-09-26 | 1993-03-31 | INTERSER GROUP S.r.l. | Overhead traveling device for carrying out pipelining and large mantainance works in industrial buildings |
| US5280715A (en) * | 1992-01-13 | 1994-01-25 | Caterpillar Inc. | Lifting arrangement and method |
| ES2113264B1 (en) * | 1993-08-02 | 1999-01-01 | Franz Ehrenleitner | SUSPENSION DEVICE FOR THE SUSPENSION OF LOADS AND HOOK IN CORRESPONDING C. |
| FR2788263B1 (en) * | 1999-01-12 | 2001-03-16 | Reel Sa | DEVICE FOR HANDLING SUSPENDED LOADS |
| FR2921578B1 (en) * | 2007-09-28 | 2010-01-29 | Sidel Participations | MANIPULATOR ROBOT FOR PALLETIZER |
| DK177708B1 (en) | 2012-09-06 | 2014-03-24 | Falck Schmidt Defence Systems As | A telescopic mast |
| WO2015085834A1 (en) * | 2013-12-13 | 2015-06-18 | 李平 | Dish conveying device used in catering store |
| CN105249980A (en) * | 2015-08-31 | 2016-01-20 | 上海飞乐机械制造有限公司 | Medical telescopic equipartition rectilinear motion mechanism |
| CN106419430A (en) * | 2016-11-28 | 2017-02-22 | 哈工大机器人集团上海有限公司 | Lifting device for dining room |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE921172C (en) * | 1949-01-19 | 1954-12-09 | Richard Gladewitz | Mobile, extendable ladder structure |
| US2632530A (en) * | 1950-07-03 | 1953-03-24 | Elmer A Wagner | Telescoping tower vehicle |
| US3286853A (en) * | 1964-12-24 | 1966-11-22 | Harnischfeger Corp | Stacker crane power lift mechanism |
| FR1545379A (en) * | 1966-11-28 | 1968-11-08 | Vagbelysning Ab | Telescopic mast improved to support antennas and the like |
| US3602335A (en) * | 1969-09-25 | 1971-08-31 | Eaton Yale & Towne | Platform positioning mechanism |
| DE2406387A1 (en) * | 1974-02-11 | 1975-08-21 | Ver Flugtechnische Werke | Overhead working platform with telescopic support - has rope pulleys and endless rope actuator between each telescopic section |
| US4166542A (en) * | 1977-12-05 | 1979-09-04 | Bryan John F Jr | Telescoping lattice boom crane |
| US4258825A (en) * | 1978-05-18 | 1981-03-31 | Collins Pat L | Powered manlift cart |
| SE415901B (en) * | 1979-02-09 | 1980-11-10 | Erik Eklund | TELESCOPIC MAST |
| DE3528996C1 (en) * | 1985-08-13 | 1986-12-18 | Mannesmann AG, 4000 Düsseldorf | Telescopic column |
-
1987
- 1987-01-20 FR FR8700745A patent/FR2609701B1/en not_active Expired
-
1988
- 1988-01-20 ES ES88420016T patent/ES2018631B3/en not_active Expired - Lifetime
- 1988-01-20 EP EP88420016A patent/EP0277078B1/en not_active Expired - Lifetime
- 1988-01-20 AT AT88420016T patent/ATE57165T1/en not_active IP Right Cessation
- 1988-01-20 DE DE8888420016T patent/DE3860708D1/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103625869A (en) * | 2013-12-13 | 2014-03-12 | 李平 | Lifting mechanism and dish delivery device with same |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2609701A1 (en) | 1988-07-22 |
| DE3860708D1 (en) | 1990-11-08 |
| ES2018631B3 (en) | 1991-04-16 |
| EP0277078A1 (en) | 1988-08-03 |
| FR2609701B1 (en) | 1989-04-07 |
| ATE57165T1 (en) | 1990-10-15 |
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