WO2000026122A1 - Speed limiting device for all types of pallets capable of moving in a flow storage gravity chute - Google Patents

Speed limiting device for all types of pallets capable of moving in a flow storage gravity chute Download PDF

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Publication number
WO2000026122A1
WO2000026122A1 PCT/FR1999/002663 FR9902663W WO0026122A1 WO 2000026122 A1 WO2000026122 A1 WO 2000026122A1 FR 9902663 W FR9902663 W FR 9902663W WO 0026122 A1 WO0026122 A1 WO 0026122A1
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WO
WIPO (PCT)
Prior art keywords
rollers
limiting device
speed limiting
corridor
roller
Prior art date
Application number
PCT/FR1999/002663
Other languages
French (fr)
Inventor
Gilles Faisant
Original Assignee
Sipa Roller
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sipa Roller filed Critical Sipa Roller
Priority to AU63487/99A priority Critical patent/AU6348799A/en
Publication of WO2000026122A1 publication Critical patent/WO2000026122A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G13/00—Roller-ways
    • B65G13/075—Braking means

Definitions

  • the present invention relates to a speed limiter device for all types of pallets capable of moving by gravity in a dynamic storage corridor.
  • the function of this limiting device is to adjust the gravity speed of pallets arranged on corridors made up of rollers or rollers in dynamic storage installations.
  • the boxes or pallets may include skis which are parallel to the direction of movement in the installation; they can also include skis perpendicular to the direction of movement.
  • the roller (s) which are braked are in permanent contact with at least one ski when the latter are parallel to the direction of movement of the pallet but, when the skis are perpendicular to the direction of movement, the pallet is subjected to an action of speed regulation intermittently, due to the space between the skis.
  • the associations of adjacent rollers by means of belts or chains generate significant energy losses by friction.
  • the present invention overcomes these drawbacks. It offers a universal speed limiter device, which offers the possibility of adjusting the speed of the paddles whatever the orientation of the skis on the paddle, that is to say skis parallel or perpendicular to the direction of movement of the pallet on the lane.
  • the limiting device comprises a braking member of the inertia type, which braking member is associated with at least one roller of the storage corridor, this braked roller is integral, in rotation, with a series of other rollers associated together in rotation also by means of motion transmission gears which mesh with the toothed wheels of said rollers, and the group of rollers thus braked, extends over a length of the corridor which is at least equal to the space between two skis of the same pallet when the latter is of the type provided with skis perpendicular to the direction of movement of said pallet on the corridor.
  • At least one of the intermediate pinions is associated with support and guide means, which means allow said pinions to disengage from at least one of the toothed wheels which are integral with the rollers, in case abnormally strong loads, or impacts, on the corresponding teeth.
  • the speed limiter device is in the form of a compact assembly in which the braking member ⁇ the braked rollers and the intermediate pinions, are assembled on the same frame consisting of two parallel flanges arranged each side, which frame is inserted between the rails which constitute the normal carrying structure of the other rollers in the corridor.
  • each intermediate pinion consists of an axis which extends parallel to that of the rollers, which axis is positioned in an orifice provided in each flange and it is held resiliently at the by means of suitable organs of the spring type, which orifice is oblong in shape.
  • the oblong orifice which allows the axis of the intermediate pinion to be guided extends vertically over a height sufficient to allow complete disengaging of the teeth of the intermediate pinion relative to the teeth of the sprockets of the rollers.
  • the brake roller has a peripheral toothed ring, which meshes with the toothed wheel of one of the rollers and in particular of the roller of the upstream end.
  • the toothed wheels of the rollers are arranged in the central part of the latter, at mid-length.
  • the speed limiter device comprises at least four rollers associated with one another by means of pinions and this group of rollers is disposed between two free rollers whose axes serve to position said device on the rail constituting the corridor.
  • FIG. 1 schematically shows a portion of dynamic storage corridor with a pallet whose skis are perpendicular to the direction of movement, and the speed limiter device integrated in this portion of corridor;
  • FIG. 2 shows, schematically, in more detail, the braking member and the braked rollers;
  • FIG. 4 shows the guide support of the axis of the intermediate gables
  • FIG. 5 is a top view of Figure 3; - Figure 6 is a section on 6-6.
  • FIG. 1 shows a portion of a corridor for the dynamic storage of pallets 1 which move by simple gravity on rollers or rollers 2 which are free. These rolls or rollers 2 are mounted on support rails 3, which rails partially shown in phantom purposes are fixed on a frame 4.
  • the inclination of the rails 3 determines the inclination of the plane of movement of the pallets 1, which allows the latter to evolve by simple gravity on the rollers 2 going from one end to the other of the storage corridor as indicated by the arrow F.
  • the speed of the paddles is automatically adjusted by means of braking devices.
  • braking members of the type described in the aforementioned document EP-0 793 609, intervene automatically during the passage of a pallet, imposing on the latter a relatively low speed to attenuate the shocks when the pallet comes into abutment at the downstream end of the corridor.
  • the space E between two skis 5 of the pallet can be relatively large and correspond to a length on the corridor for which the number of braked rollers is too low, which causes intermittent braking in spurts, insufficient to slow down the heavily loaded pallets.
  • the speed limiter device 6 installed on the corridor portion shown in FIG. 1, is arranged to make several rollers active over a length L which is at least equal, preferably greater, to the space E between two adjacent skis of the same pallet, so as to achieve continuous braking of said pallet.
  • the speed limiter device 6 comprises a braking member 7 of the inertia type, the roller 9 of which is in contact with at least one roller 10 which is part of the speed limiter device.
  • roller 9 of the braking member 7 is positioned so as to be in contact with two rollers: a downstream idler roller
  • roller 10 which constitutes the real braked roller when, in particular, a very large braking force is exerted by the roller 9.
  • the roller 10 is part of a group 11 consisting of rollers 10 associated with each other in rotation.
  • Each roller 10 of group 11 comprises at at least one of its ends, a toothed wheel 12 whose diameter is less than that of the roller.
  • the toothed wheels 12 of two adjacent rollers 10 mesh on a pinion 13 which enables said rotating rollers to be secured and which constitutes an intermediate movement transmission pinion.
  • the number of rollers 10 forming the group 11 is chosen so as to obtain a length L at the level of which the pallet 1 is capable of being braked, which corresponds at least to the space E between two skis 5 of said palette.
  • the braking member 7, the group of rollers 11 and the various intermediate gears 13 form a compact assembly mounted on flanges 14 which appear in FIG. 1.
  • This pre-assembled assembly can be integrated into the rails 3 which form the corridor.
  • the flanges 14 are arranged laterally and make it possible to obtain a precise mounting and guidance of the axes of the various constituent elements with respect to each other.
  • the braking member 7 is in contact with the upstream roller 10. It can also be located along the length of the group 11 in contact with other rollers.
  • FIG. 3 shows another vertical embodiment in median vertical section.
  • the speed limiter device is also in the form of a compact assembly designed to be inserted on a corridor rail.
  • the speed limiter device comprises at each of its ends, free rollers 20 whose axes 21 have dimensions which allow the integration and anchoring of said device in one of the constituent rails of the corridor.
  • the rollers 20 are arranged on either side of the group of rollers 10 and the assembly is fixed and maintained by the flanges 14, forming a compact device easily integrated into a rail constituting the corridor.
  • the rollers 10 have toothed wheels 12 which mesh with pinions 13.
  • the toothed wheels 12 are, as shown in FIGS. 5 and 6, arranged in the central part of the rollers 10.
  • the braking member 7 has a toothing 22 on its central periphery, which meshes with the toothed wheel 12 of the first upstream roller 10.
  • This braking member 7 has an axis 23 which is fixed directly to the flanges 14.
  • Each pinion 13 is mounted on an axis 24 which is guided in orifices 25 arranged in the flanges 14. These orifices 25 have an oblong shape and extend in a vertical plane between two adjacent rollers 10.
  • the axis 24 has a vertical freedom of movement in the orifice 25 and it is held elastically in the normal position to allow the engagement of the pinion 13 associated with said axis 24 with the toothed wheels 12 of the adjacent rollers.
  • the axis 24 is held at each of its ends, by means of elastic members in the form of springs 26 which extend between said axis 24 and for example the ends of the axis 27 of the neighboring roller 10.
  • the height of the orifice 25 is chosen to provide sufficient travel for the axis 24 and to allow the pinion 13 to disengage from the teeth of the wheels 12.
  • the toothed wheel 12 of said upstream roller drives the braking member 7 and each of the other rollers 10 via the pinions 13.
  • the forces on the first upstream pinion 13 and then on the other pinions 13 are such that these pinions are automatically removed by a vertical movement of their axis 24 in the orifices 25.
  • the pallet in motion can thus progress on different rollers 10; it is braked by the first upstream roller 10 whose movement is controlled by the braking member 7 and, by its movement, it drives the previous pallet which has stopped on the downstream roller or rollers of the speed limiter device.
  • a protective casing 30 is installed under the pinions 13, also enveloping the braking member 7.
  • This casing 30 is for example mounted on the cross-members 31 which extend between the flanges 14, which cross-members ensure the assembly of the assembly constituting the speed limiter 6.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)
  • Escalators And Moving Walkways (AREA)

Abstract

The invention concerns a speed limiting device in the form of an assembly comprising a braking member (7) and a group (11) of locked rollers. Said group of locked rollers extend over a length L of the chute which is not less than the space E separating the skis (5) of a common pallet for which the skis are arranged perpendicular to the moving direction of said pallet along said chute. The speed limiting device is in the form of a compact assembly incorporated in a chute. Said assembly provides the speed limiting device with a universal character which enables it to be adapted to all types of pallets capable of moving by gravity in a flow storage gravity chute. The different groups (11) of rollers are mutually integral in rotation by means of toothed wheels (12) and intermediate pinions (13).

Description

DISPOSITIF LIMITEUR DE VITESSE POUR TOUS TYPES DE PALETTESSPEED LIMITER FOR ALL TYPES OF PALLETS
SUSCEPTIBLES DE SE DÉPLACER PAR GRAVITÉ DANS UN COULOIR DELIKELY TO MOVE BY GRAVITY IN A CORRIDOR
STOCKAGE DYNAMIQUEDYNAMIC STORAGE
La présente invention concerne un dispositif limiteur de vitesse pour tous types de palettes susceptibles de se déplacer par gravité dans un couloir de stockage dynamique.The present invention relates to a speed limiter device for all types of pallets capable of moving by gravity in a dynamic storage corridor.
Ce dispositif limiteur a pour fonction de régler la vitesse gravitaire de palettes disposées sur des couloirs constitués de rouleaux ou galets dans des installations de stockage dynamique. Les caisses ou palettes peuvent comporter des skis qui sont parallèles au sens de déplacement dans l'installation ; elles peuvent également comporter des skis perpendiculaires au sens de déplacement.The function of this limiting device is to adjust the gravity speed of pallets arranged on corridors made up of rollers or rollers in dynamic storage installations. The boxes or pallets may include skis which are parallel to the direction of movement in the installation; they can also include skis perpendicular to the direction of movement.
Dans les installations de stockage dynamique, comme décrit dans le document EP-0 793 609 de la demanderesse, le ou les rouleaux qui sont freinés, sont en contact permanent avec au moins un ski lorsque ces derniers sont parallèles au sens de déplacement de la palette mais, lorsque les skis sont perpendiculaires au sens de déplacement, la palette est soumise à une action de régulation de vitesse par intermittence, du fait de l'espace entre les skis. II est connu d'associer plusieurs rouleaux adjacents, au moyen de courroies ou de chaînes. Ces associations de rouleaux, en rotation, avec ou sans système de freinage, ne sont pas forcément prévues pour permettre le freinage de palettes dont les skis sont perpendiculaires au sens de déplacement. De plus, les associations de rouleaux adjacents au moyen de courroies ou de chaînes, génèrent des pertes d'énergie importantes par frottement.In dynamic storage installations, as described in document EP-0 793 609 of the applicant, the roller (s) which are braked, are in permanent contact with at least one ski when the latter are parallel to the direction of movement of the pallet but, when the skis are perpendicular to the direction of movement, the pallet is subjected to an action of speed regulation intermittently, due to the space between the skis. It is known to combine several adjacent rollers, by means of belts or chains. These combinations of rollers, in rotation, with or without braking system, are not necessarily provided to allow the braking of pallets whose skis are perpendicular to the direction of movement. In addition, the associations of adjacent rollers by means of belts or chains generate significant energy losses by friction.
Ces pertes constituent une gêne notamment dans le cas de charges de faible poids qui se déplacent sur les rouleaux et qui ont tendance à être bloquées sur ces rouleaux de freinage. La présente invention permet de surmonter ces inconvénients. Elle propose un dispositif limiteur de vitesse universel, qui offre la possibilité de régler la vitesse des palettes quelle que soit l'orientation des skis de la palette, c'est-à-dire des skis parallèles ou perpendiculaires au sens de déplacement de la palette sur le couloir.These losses constitute an annoyance in particular in the case of loads of light weight which move on the rollers and which tend to be blocked on these braking rollers. The present invention overcomes these drawbacks. It offers a universal speed limiter device, which offers the possibility of adjusting the speed of the paddles whatever the orientation of the skis on the paddle, that is to say skis parallel or perpendicular to the direction of movement of the pallet on the lane.
Le dispositif limiteur selon l'invention comprend un organe de freinage du type à inertie, lequel organe de freinage est associé à au moins un rouleau du couloir de stockage, ce rouleau freiné est solidaire, en rotation, d'une série d'autres rouleaux associés entre eux en rotation également au moyen de pignons de transmission de mouvement qui engrènent avec les roues dentées desdits rouleaux, et le groupe de rouleaux ainsi freinés, s'étend sur une longueur du couloir qui est au moins égale à l'espace entre deux skis d'une même palette lorsque cette dernière est du type munie de skis perpendiculaires au sens de déplacement de ladite palette sur le couloir.The limiting device according to the invention comprises a braking member of the inertia type, which braking member is associated with at least one roller of the storage corridor, this braked roller is integral, in rotation, with a series of other rollers associated together in rotation also by means of motion transmission gears which mesh with the toothed wheels of said rollers, and the group of rollers thus braked, extends over a length of the corridor which is at least equal to the space between two skis of the same pallet when the latter is of the type provided with skis perpendicular to the direction of movement of said pallet on the corridor.
L'utilisation de pignons et roues dentées limite les pertes par frottement. Autant que possible, le dispositif limiteur ne doit pas contrarier le mouvement de palettes qui se déplacent à très faible vitesse lorsqu'elles sont peu chargées par exemple.The use of pinions and toothed wheels limits friction losses. As far as possible, the limiter device must not impede the movement of pallets which move at very low speed when they are lightly loaded, for example.
Toujours selon l'invention, l'un au moins des pignons intermédiaires est associé à des moyens de support et de guidage, lesquels moyens permettent auxdits pignons de se désengrener de l'une au moins des roues dentées qui sont solidaires des rouleaux, en cas de charges anormalement fortes, ou de chocs, sur les dentures correspondantes.Still according to the invention, at least one of the intermediate pinions is associated with support and guide means, which means allow said pinions to disengage from at least one of the toothed wheels which are integral with the rollers, in case abnormally strong loads, or impacts, on the corresponding teeth.
Toujours selon l'invention, le dispositif limiteur de vitesse se présente sous la forme d'un ensemble compact dans lequel l'organe de freinage^ les rouleaux freinés et les pignons intermédiaires, sont rassemblés sur un même bâti constitué de deux flasques parallèles disposés de chaque côté, lequel bâti s'insère entre les rails qui constituent la structure porteuse normale des autres rouleaux du couloir.Still according to the invention, the speed limiter device is in the form of a compact assembly in which the braking member ^ the braked rollers and the intermediate pinions, are assembled on the same frame consisting of two parallel flanges arranged each side, which frame is inserted between the rails which constitute the normal carrying structure of the other rollers in the corridor.
Selon une autre disposition de l'invention, le support de chaque pignon intermédiaire est constitué d'un axe qui s'étend parallèlement à celui des rouleaux, lequel axe est positionné dans un orifice aménagé dans chaque flasque et il est maintenu de façon élastique au moyen d'organes appropriés du genre ressorts, lequel orifice est de forme oblongue. Selon une autre disposition de l'invention, l'orifice oblong qui permet le guidage de l'axe du pignon intermédiaire, s'étend verticalement sur une hauteur suffisante pour permettre un desengrenement total de la denture du pignon intermédiaire par rapport à la denture des roues dentées des rouleaux. Selon l'invention, le galet freineur comporte une couronne dentée périphérique, qui engrène avec la roue dentée de l'un des rouleaux et en particulier du rouleau de l'extrémité amont.According to another arrangement of the invention, the support of each intermediate pinion consists of an axis which extends parallel to that of the rollers, which axis is positioned in an orifice provided in each flange and it is held resiliently at the by means of suitable organs of the spring type, which orifice is oblong in shape. According to another arrangement of the invention, the oblong orifice which allows the axis of the intermediate pinion to be guided, extends vertically over a height sufficient to allow complete disengaging of the teeth of the intermediate pinion relative to the teeth of the sprockets of the rollers. According to the invention, the brake roller has a peripheral toothed ring, which meshes with the toothed wheel of one of the rollers and in particular of the roller of the upstream end.
Toujours selon l'invention, les roues dentées des rouleaux sont disposées dans la partie centrale de ces derniers, à mi-longueur. Selon une autre disposition de l'invention, le dispositif limiteur de vitesse comporte au moins quatre rouleaux associés entre eux par l'intermédiaire de pignons et ce groupe de rouleaux est disposé entre deux rouleaux libres dont les axes servent à positionner ledit dispositif sur le rail constitutif du couloir.Still according to the invention, the toothed wheels of the rollers are arranged in the central part of the latter, at mid-length. According to another arrangement of the invention, the speed limiter device comprises at least four rollers associated with one another by means of pinions and this group of rollers is disposed between two free rollers whose axes serve to position said device on the rail constituting the corridor.
L'invention sera encore détaillée à l'aide de la description suivante et des dessins annexés, donnés à titre indicatif, et dans lesquels :The invention will be further detailed with the aid of the following description and the appended drawings, given for information only, and in which:
- la figure 1 représente schématiquement une portion de couloir de stockage dynamique avec une palette dont les skis sont perpendiculaires au sens de déplacement, et le dispositif limiteur de vitesse intégré dans cette portion de couloir ; - la figure 2 représente, schématiquement, d'une façon plus détaillée, l'organe de freinage et les rouleaux freinés ;- Figure 1 schematically shows a portion of dynamic storage corridor with a pallet whose skis are perpendicular to the direction of movement, and the speed limiter device integrated in this portion of corridor; - Figure 2 shows, schematically, in more detail, the braking member and the braked rollers;
- la figure 3 montre une variante de réalisation ;- Figure 3 shows an alternative embodiment;
- la figure 4 montre le support guide de l'axe des pignons intermédiaires ;- Figure 4 shows the guide support of the axis of the intermediate gables;
- la figure 5 est une vue de dessus de la figure 3 ; - la figure 6 est une coupe selon 6-6.- Figure 5 is a top view of Figure 3; - Figure 6 is a section on 6-6.
La figure 1 montre une portion de couloir pour le stockage dynamique de palettes 1 qui se déplacent par simple gravité sur des rouleaux ou galets 2 qui sont libres. Ces rouleaux ou galets 2 sont montés sur des rails porteurs 3, lesquels rails représentés partiellement en traits mixtes fins, sont fixés sur' un bâti 4.FIG. 1 shows a portion of a corridor for the dynamic storage of pallets 1 which move by simple gravity on rollers or rollers 2 which are free. These rolls or rollers 2 are mounted on support rails 3, which rails partially shown in phantom purposes are fixed on a frame 4.
L'inclinaison des rails 3 détermine l'inclinaison du plan de déplacement des palettes 1 , ce qui permet à ces dernières d'évoluer par simple gravité sur les rouleaux 2 allant d'une extrémité à l'autre du couloir de stockage comme indiqué par la flèche F.The inclination of the rails 3 determines the inclination of the plane of movement of the pallets 1, which allows the latter to evolve by simple gravity on the rollers 2 going from one end to the other of the storage corridor as indicated by the arrow F.
La vitesse des palettes est réglée automatiquement au moyen d'organes de freinage. Ces organes de freinage, du type de celui décrit dans le document précité EP-0 793 609, interviennent automatiquement lors du passage d'une palette, imposant à cette dernière une vitesse relativement faible pour atténuer les chocs lorsque la palette arrive en butée à l'extrémité aval du couloir.The speed of the paddles is automatically adjusted by means of braking devices. These braking members, of the type described in the aforementioned document EP-0 793 609, intervene automatically during the passage of a pallet, imposing on the latter a relatively low speed to attenuate the shocks when the pallet comes into abutment at the downstream end of the corridor.
Dans le cas de palettes 1 comme représenté figure 1 , c'est-à-dire de palettes qui comportent des skis 5 dont l'orientation est perpendiculaire au sens de déplacement de ladite palette, le freinage ne se produit que lorsque le ski 5 est en contact avec l'organe de freinage ou avec le ou les rouleaux qui sont freinés lorsqu'ils sont associés à cet organe de freinage comme représenté sur cette figure 1.In the case of pallets 1 as shown in FIG. 1, that is to say of pallets which include skis 5 whose orientation is perpendicular to the direction of movement of said pallet, braking only occurs when the ski 5 is in contact with the braking member or with the roller or rollers which are braked when they are associated with this braking member as shown in this figure 1.
L'espace E entre deux skis 5 de la palette, peut être relativement important et correspondre à une longueur sur le couloir pour laquelle le nombre de rouleaux freinés est trop faible, ce qui provoque un freinage intermittent par à-coups, insuffisant pour ralentir les palettes lourdement chargées.The space E between two skis 5 of the pallet, can be relatively large and correspond to a length on the corridor for which the number of braked rollers is too low, which causes intermittent braking in spurts, insufficient to slow down the heavily loaded pallets.
Le dispositif limiteur de vitesse 6 installé sur la portion de couloir représenté figure 1 , est agencé pour rendre plusieurs rouleaux actifs sur une longueur L qui est au moins égale, de préférence supérieure, à l'espace E entre deux skis adjacents d'une même palette, de façon à réaliser un freinage continu de ladite palette.The speed limiter device 6 installed on the corridor portion shown in FIG. 1, is arranged to make several rollers active over a length L which is at least equal, preferably greater, to the space E between two adjacent skis of the same pallet, so as to achieve continuous braking of said pallet.
Le dispositif limiteur de vitesse 6 comprend un organe de freinage 7 du type à inertie dont le galet 9 est en contact avec au moins un rouleau 10 qui fait partie du dispositif limiteur de vitesse.The speed limiter device 6 comprises a braking member 7 of the inertia type, the roller 9 of which is in contact with at least one roller 10 which is part of the speed limiter device.
On remarque figure 2, que le galet 9 de l'organe de freinage 7 est positionné de façon à être en contact avec deux rouleaux : un rouleau aval fouNote in Figure 2, that the roller 9 of the braking member 7 is positioned so as to be in contact with two rollers: a downstream idler roller
2 et en amont de ce rouleau fou, un rouleau 10 qui constitue le véritable rouleau freiné lorsque, en particulier, un effort de freinage très important est exercé par le galet 9.2 and upstream of this idler roller, a roller 10 which constitutes the real braked roller when, in particular, a very large braking force is exerted by the roller 9.
Le rouleau 10 fait partie d'un groupe 11 constitué de rouleaux 10 associés entre eux en rotation. Chaque rouleau 10 du groupe 11 comporte à l'une au moins de ses extrémités, une roue dentée 12 dont le diamètre est inférieur à celui du rouleau. Les roues dentées 12 de deux rouleaux 10 adjacents engrènent sur un pignon 13 qui permet de solidariser lesdits rouleaux en rotation et qui constitue un pignon intermédiaire de transmission de mouvement.The roller 10 is part of a group 11 consisting of rollers 10 associated with each other in rotation. Each roller 10 of group 11 comprises at at least one of its ends, a toothed wheel 12 whose diameter is less than that of the roller. The toothed wheels 12 of two adjacent rollers 10 mesh on a pinion 13 which enables said rotating rollers to be secured and which constitutes an intermediate movement transmission pinion.
L'utilisation d'une cascade de pignons 13 et roues dentées 12 réduit de façon importante les pertes par frottement de cet ensemble de rouleaux.The use of a cascade of pinions 13 and toothed wheels 12 significantly reduces the friction losses of this set of rollers.
Le nombre de rouleaux 10 formant le groupe 11 est choisi de façon à obtenir sur le couloir une longueur L au niveau de laquelle la palette 1 est susceptible d'être freinée, qui correspond au moins à l'espace E entre deux skis 5 de ladite palette.The number of rollers 10 forming the group 11 is chosen so as to obtain a length L at the level of which the pallet 1 is capable of being braked, which corresponds at least to the space E between two skis 5 of said palette.
L'organe de freinage 7, le groupe de rouleaux 11 et les différents pignons intermédiaires 13 forment un ensemble compact monté sur des flasques 14 qui apparaissent figure 1. Cet ensemble prémonté peut s'intégrer dans les rails 3 qui forment le couloir.The braking member 7, the group of rollers 11 and the various intermediate gears 13 form a compact assembly mounted on flanges 14 which appear in FIG. 1. This pre-assembled assembly can be integrated into the rails 3 which form the corridor.
Les flasques 14 sont disposés latéralement et permettent d'obtenir un montage et un guidage précis des axes des différents éléments constitutifs les uns par rapport aux autres.The flanges 14 are arranged laterally and make it possible to obtain a precise mounting and guidance of the axes of the various constituent elements with respect to each other.
L'organe de freinage 7 est en contact avec le rouleau amont 10. Il peut également se situer sur la longueur du groupe 11 en contact avec d'autres rouleaux.The braking member 7 is in contact with the upstream roller 10. It can also be located along the length of the group 11 in contact with other rollers.
La figure 3 montre en coupe verticale médiane, un autre mode de réalisation.FIG. 3 shows another vertical embodiment in median vertical section.
Le dispositif limiteur de vitesse se présente également sous la forme d'un ensemble compact aménagé pour s'insérer sur un rail de couloir.The speed limiter device is also in the form of a compact assembly designed to be inserted on a corridor rail.
On remarque figure 3, que le dispositif limiteur de vitesse comporte à chacune de ses extrémités, des rouleaux libres 20 dont les axes 21 ont des dimensions qui permettent l'intégration et l'ancrage dudit dispositif dans l'un des rails constitutifs du couloir. Les rouleaux 20 sont disposés de part et d'autre du groupe de rouleaux 10 et l'ensemble est fixé et maintenu par les flasques 14, formant un dispositif compact facilement intégrable dans un rail constitutif du couloir. Comme précédemment, les rouleaux 10 comportent des roues dentées 12 qui engrènent avec des pignons 13. Les roues dentées 12 sont, comme représenté figures 5 et 6, disposées dans la partie centrale des rouleaux 10.Note in Figure 3, that the speed limiter device comprises at each of its ends, free rollers 20 whose axes 21 have dimensions which allow the integration and anchoring of said device in one of the constituent rails of the corridor. The rollers 20 are arranged on either side of the group of rollers 10 and the assembly is fixed and maintained by the flanges 14, forming a compact device easily integrated into a rail constituting the corridor. As before, the rollers 10 have toothed wheels 12 which mesh with pinions 13. The toothed wheels 12 are, as shown in FIGS. 5 and 6, arranged in the central part of the rollers 10.
L'organe de freinage 7 comporte une denture 22 sur sa périphérie centrale, qui engrène avec la roue dentée 12 du premier rouleau amont 10.The braking member 7 has a toothing 22 on its central periphery, which meshes with the toothed wheel 12 of the first upstream roller 10.
Cet organe de freinage 7 comporte un axe 23 qui est fixé directement sur les flasques 14.This braking member 7 has an axis 23 which is fixed directly to the flanges 14.
Dans certaines conditions il est possible qu'une palette s'arrête sur le ou les derniers rouleaux 10. Dans cette situation, lorsqu'une nouvelle palette se déplace et entre en contact avec le rouleau amont 10, on observe des efforts importants au niveau des dentures des roues 12 et des pignons 13. Pour éviter des incidents du genre casse, au niveau des dentures, les pignons 13 sont montés de façon à pouvoir se désengrener des roues 12.Under certain conditions it is possible that a pallet stops on the last roller (s) 10. In this situation, when a new pallet moves and comes into contact with the upstream roller 10, significant forces are observed at the level of the teeth of the wheels 12 and the pinions 13. To avoid incidents of the breakage type, at the teeth, the pinions 13 are mounted so as to be able to disengage from the wheels 12.
Chaque pignon 13 est monté sur un axe 24 qui est guidé dans des orifices 25 aménagés dans les flasques 14. Ces orifices 25 ont une forme oblongue et s'étendent dans un plan vertical entre deux rouleaux 10 adjacents.Each pinion 13 is mounted on an axis 24 which is guided in orifices 25 arranged in the flanges 14. These orifices 25 have an oblong shape and extend in a vertical plane between two adjacent rollers 10.
L'axe 24 dispose d'une liberté de mouvement vertical dans l'orifice 25 et il est maintenu élastiquement en position normale pour permettre l'engrènement du pignon 13 associé audit axe 24 avec les roues dentées 12 des rouleaux adjacents. L'axe 24 est maintenu à chacune de ses extrémités, au moyen d'organes élastiques en forme de ressorts 26 qui s'étendent entre ledit axe 24 et par exemple les extrémités de l'axe 27 du rouleau 10 voisin.The axis 24 has a vertical freedom of movement in the orifice 25 and it is held elastically in the normal position to allow the engagement of the pinion 13 associated with said axis 24 with the toothed wheels 12 of the adjacent rollers. The axis 24 is held at each of its ends, by means of elastic members in the form of springs 26 which extend between said axis 24 and for example the ends of the axis 27 of the neighboring roller 10.
La hauteur de l'orifice 25 est choisie pour offrir une course suffisante à l'axe 24 et permettre le désengagement du pignon 13 de la denture des roues 12.The height of the orifice 25 is chosen to provide sufficient travel for the axis 24 and to allow the pinion 13 to disengage from the teeth of the wheels 12.
Ainsi, lorsqu'une palette 1 arrive sur le rouleau amont 10, la roue dentée 12 dudit rouleau amont entraîne l'organe de freinage 7 et chacun des autres rouleaux 10 par l'intermédiaire des pignons 13. Cependant, si une palette est arrêtée sur un ou plusieurs des rouleaux situés en aval, les efforts sur le premier pignon amont 13 et ensuite sur les autres pignons 13 sont tels que ces pignons s'éclipsent automatiquement par un mouvement vertical de leur axe 24 dans les orifices 25. La palette en mouvement peut ainsi progresser sur les différents rouleaux 10 ; elle est freinée par le premier rouleau 10 amont dont le mouvement est contrôle par l'organe de freinage 7 et, par son mouvement, elle entraîne la palette précédente restée en arrêt sur le ou les rouleaux aval du dispositif limiteur de vitesse.Thus, when a pallet 1 arrives on the upstream roller 10, the toothed wheel 12 of said upstream roller drives the braking member 7 and each of the other rollers 10 via the pinions 13. However, if a pallet is stopped on one or more of the rollers located downstream, the forces on the first upstream pinion 13 and then on the other pinions 13 are such that these pinions are automatically removed by a vertical movement of their axis 24 in the orifices 25. The pallet in motion can thus progress on different rollers 10; it is braked by the first upstream roller 10 whose movement is controlled by the braking member 7 and, by its movement, it drives the previous pallet which has stopped on the downstream roller or rollers of the speed limiter device.
Un carter de protection 30 est installé sous les pignons 13, enveloppant également l'organe de freinage 7. Ce carter 30 est par exemple monté sur les traverses 31 qui s'étendent entre les flasques 14, lesquelles traverses assurent l'assemblage de l'ensemble constituant le limiteur de vitesse 6. A protective casing 30 is installed under the pinions 13, also enveloping the braking member 7. This casing 30 is for example mounted on the cross-members 31 which extend between the flanges 14, which cross-members ensure the assembly of the assembly constituting the speed limiter 6.

Claims

- REVENDICATIONS - 1.- Dispositif limiteur de vitesse pour tous types de palettes susceptibles de se déplacer par gravité dans un couloir de stockage dynamique formé de rouleaux ou galets fous (2), comprenant un organe de freinage (7) associé à au moins un rouleau constituant ledit couloir, caractérisé en ce que ledit rouleau freiné (10) est solidaire, en rotation, d'une série de rouleaux, l'ensemble formant un groupe (11) comportant des roues dentées (12), lesquelles roues dentées de deux rouleaux adjacents sont en prise avec un pignon intermédiaire (13) de transmission de mouvement, lequel groupe s'étend sur une longueur L du couloir qui est au moins égale à l'espace entre deux skis (5) de la palette (1) lorsque cette dernière est par exemple du type munie de skis perpendiculaires au sens de déplacement de ladite palette (1) dans le couloir- CLAIMS - 1.- Speed limiting device for all types of pallets capable of moving by gravity in a dynamic storage corridor formed by idle rollers or rollers (2), comprising a braking member (7) associated with at least one roller constituting said corridor, characterized in that said braked roller (10) is integral, in rotation, with a series of rollers, the assembly forming a group (11) comprising toothed wheels (12), which toothed wheels of two adjacent rollers are engaged with an intermediate gear (13) for transmitting movement, which group extends over a length L of the passage which is at least equal to the space between two skis (5) of the pallet (1) when the latter is for example of the type provided with skis perpendicular to the direction of movement of said pallet (1) in the corridor
2.- Dispositif limiteur de vitesse selon la revendication 1 , caractérisé en ce qu'un au moins des pignons (13) est associé à des moyens de support et de guidage qui permettent audit pignon de se désengrener de l'une au moins des roues dentées (12) qui sont solidaires des rouleaux (10), en cas de charge anormalement forte ou de choc sur les dentures.2.- speed limiter device according to claim 1, characterized in that at least one of the pinions (13) is associated with support and guide means which allow said pinion to disengage from at least one of the wheels teeth (12) which are integral with the rollers (10), in the event of an abnormally heavy load or impact on the teeth.
3.- Dispositif limiteur de vitesse selon la revendication 2, caractérisé en ce que l'organe de freinage (7), le groupe de rouleaux (11) et les pignons intermédiaires (13) forment un ensemble compact disposé sur un bâti constitué de deux flasques (14) qui portent les différents axes des éléments constitutifs, lequel ensemble s'insère sur les rails (3) qui sont les rails porteurs des rouleaux libres ou galets (2).3.- speed limiter device according to claim 2, characterized in that the braking member (7), the group of rollers (11) and the intermediate pinions (13) form a compact assembly disposed on a frame consisting of two flanges (14) which carry the different axes of the constituent elements, which assembly is inserted on the rails (3) which are the rails carrying the free rollers or rollers (2).
4.- Dispositif limiteur de vitesse selon la revendication 3, caractérisé en ce que le support de chaque pignon (13) est constitué d'un axe (24) qui s'étend parallèlement à celui des rouleaux (10), lequel axe (24) est positionné dans un orifice (25) aménagé dans chaque flasque (14) et il est maintenu de façon élastique au moyen d'organes appropriés du genre ressort (26), lequel orifice est de forme oblongue. 4. Speed limiting device according to claim 3, characterized in that the support of each pinion (13) consists of an axis (24) which extends parallel to that of the rollers (10), which axis (24 ) is positioned in an orifice (25) arranged in each flange (14) and it is held resiliently by means of suitable members of the spring type (26), which orifice is of oblong shape.
5.- Dispositif limiteur de vitesse selon la revendication 4, caractérisé en ce que l'orifice oblong (25) s'étend verticalement sur une hauteur telle qu'elle permet un desengrenement total de la denture du pignon (13) par rapport à la denture des roues (12).5. Speed limiting device according to claim 4, characterized in that the oblong orifice (25) extends vertically over a height such that it allows total gear reduction of the gear teeth (13) relative to the teeth of the wheels (12).
6.- Dispositif limiteur de vitesse selon l'une quelconque des revendications 1 à 5, caractérisé en ce que l'organe de freinage (7) comporte une denture (22) qui engrène directement avec la roue dentée du rouleau (10) situé en amont.6. Speed limiting device according to any one of claims 1 to 5, characterized in that the braking member (7) has a toothing (22) which meshes directly with the toothed wheel of the roller (10) located in upstream.
7.- Dispositif limiteur de vitesse selon la revendication 6, caractérisé en ce que la roue dentée (12) est disposée au centre des rouleaux (10), c'est-à- dire dans la partie médiane dudit dispositif limiteur de vitesse. 7. Speed limiting device according to claim 6, characterized in that the toothed wheel (12) is arranged in the center of the rollers (10), that is to say in the middle part of said speed limiting device.
8.- Dispositif limiteur de vitesse selon l'une quelconque des revendications 1 à 7, caractérisé en ce qu'il comporte au moins quatre rouleaux (10) associés entre eux par l'intermédiaire de pignons (13), lesquels rouleaux (10) sont disposés entre des rouleaux libres (20) dont les axes (21) servent à positionner et fixer ledit dispositif sur un rail constitutif du couloir. 8. Speed limiting device according to any one of claims 1 to 7, characterized in that it comprises at least four rollers (10) associated with one another by means of pinions (13), which rollers (10) are arranged between free rollers (20) whose axes (21) are used to position and fix said device on a rail constituting the corridor.
PCT/FR1999/002663 1998-11-03 1999-10-29 Speed limiting device for all types of pallets capable of moving in a flow storage gravity chute WO2000026122A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU63487/99A AU6348799A (en) 1998-11-03 1999-10-29 Speed limiting device for all types of pallets capable of moving in a flow storage gravity chute

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR98/13970 1998-11-03
FR9813970 1998-11-03

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WO2000026122A1 true WO2000026122A1 (en) 2000-05-11

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104709662A (en) * 2015-03-10 2015-06-17 青岛元启工业智能技术有限公司 Movable automatic conveying sliding table

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1264575A (en) * 1960-05-11 1961-06-23 Further training in roller conveyors
DE1247948B (en) * 1962-11-21 1967-08-17 Otto Peters Jun Fa Device for controlling the movement of goods located on an inclined roller conveyor
US3557925A (en) * 1968-04-19 1971-01-26 United States Steel Corp Hydraulic brake for conveyor rollers
FR2153396A1 (en) * 1971-09-22 1973-05-04 Eckebrecht James
DE2556991A1 (en) * 1975-12-18 1977-06-23 Holstein & Kappert Maschf Roller conveyor for piece goods - has band brake covering rollers situated one behind the other along conveyor length
WO1996016883A1 (en) * 1994-12-02 1996-06-06 Sipa Roller Speed limiter for cases or pallets carrying various loads and which are gravity displaceable on an inclined plane of rollers or wheels

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1264575A (en) * 1960-05-11 1961-06-23 Further training in roller conveyors
DE1247948B (en) * 1962-11-21 1967-08-17 Otto Peters Jun Fa Device for controlling the movement of goods located on an inclined roller conveyor
US3557925A (en) * 1968-04-19 1971-01-26 United States Steel Corp Hydraulic brake for conveyor rollers
FR2153396A1 (en) * 1971-09-22 1973-05-04 Eckebrecht James
DE2556991A1 (en) * 1975-12-18 1977-06-23 Holstein & Kappert Maschf Roller conveyor for piece goods - has band brake covering rollers situated one behind the other along conveyor length
WO1996016883A1 (en) * 1994-12-02 1996-06-06 Sipa Roller Speed limiter for cases or pallets carrying various loads and which are gravity displaceable on an inclined plane of rollers or wheels
EP0793609A1 (en) * 1994-12-02 1997-09-10 Sipa Roller Speed limiter for cases or pallets carrying various loads and which are gravity displaceable on an inclined plane of rollers or wheels

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104709662A (en) * 2015-03-10 2015-06-17 青岛元启工业智能技术有限公司 Movable automatic conveying sliding table

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