EP1914193A1 - Scissor lift - Google Patents

Scissor lift Download PDF

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Publication number
EP1914193A1
EP1914193A1 EP07360052A EP07360052A EP1914193A1 EP 1914193 A1 EP1914193 A1 EP 1914193A1 EP 07360052 A EP07360052 A EP 07360052A EP 07360052 A EP07360052 A EP 07360052A EP 1914193 A1 EP1914193 A1 EP 1914193A1
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EP
European Patent Office
Prior art keywords
chisel
actuator
lifting table
table according
legs
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP07360052A
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German (de)
French (fr)
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EP1914193A8 (en
EP1914193B1 (en
Inventor
Pierre Marcelli
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rotobloc-PSP SARL
ROTOBLOC PSP SARL
Original Assignee
Rotobloc-PSP SARL
ROTOBLOC PSP SARL
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Publication date
Application filed by Rotobloc-PSP SARL, ROTOBLOC PSP SARL filed Critical Rotobloc-PSP SARL
Publication of EP1914193A1 publication Critical patent/EP1914193A1/en
Publication of EP1914193A8 publication Critical patent/EP1914193A8/en
Application granted granted Critical
Publication of EP1914193B1 publication Critical patent/EP1914193B1/en
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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
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/08—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement hydraulically or pneumatically operated
    • 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
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/065—Scissor linkages, i.e. X-configuration

Definitions

  • the present invention relates to a scissor lift table comprising a load-bearing platform supported by at least one chisel formed of a pair of legs articulated at their point of intersection and provided with four movable support points respectively flowing in linked upper rails. to the load bearing tray and in lower rails connected to the ground or to a frame, and at least one first actuator coupled to said chisel for moving said load bearing tray vertically between at least one low position and a high position.
  • This type of lifting table is commonly used in the field of handling and allows to lower and / or raise a load in a horizontal plane.
  • the load bearing tray can be flat or vee in particular to move heavy coils (ferrous and non-ferrous metals, paper, plastic film, etc.) intended for loading and / or unloading reels.
  • the lifting table can be equipped with a single chisel or several superimposed scissors as in the example of the publication GB 927,600 . This chisel can be asymmetrical or symmetrical.
  • the chisel is asymmetrical, that is to say it has two fixed support points provided with a hinge and two movable support points provided with a roller.
  • the distribution of a centered load which is uniformly distributed over the four support points in the low position of the plate, varies during the lifting of the plate to focus on the two mobile support points in the high position. This phenomenon inevitably leads to premature wear of the rollers, especially in case of heavy loads.
  • This problem is solved by the use of a symmetrical chisel provided with four movable support points.
  • links are mounted between the plate and the legs of the chisel to allow the lift table to move in its axis of symmetry.
  • An example is illustrated in the publication GB 326,362 .
  • the lift table can be fixed or mobile relative to the ground or to a frame.
  • the lift table is carried by an additional carriage mounted rolling in open rails fixed to the ground and controlled by an actuator and a mechanical transmission chain and pinions for example.
  • This solution is expensive, bulky in height and a source of accident for the operator with the risk of crushing his feet.
  • the loading height being higher than for a fixed lifting table, it requires the manufacture of specific reels with high mandrel height where high machinery prices.
  • Another solution is described in the publication US5,339,749 wherein the lift table is mounted on sliders movable in horizontal translation by a screw system / nuts driven by a motor. This same motor allows depending on the direction of rotation of the worm to move the lift table vertically, which therefore has no own actuator, which is very restrictive.
  • the vertical actuator used in this type of lifting table is generally constituted by a jack of any known type, single or double effect, mounted in an inclined position or between a lower frame and one of the chisel legs as in the publication GB 1 502 778 , or between the point of intersection of the chisel and the plateau as in the publication GB 2,301,282 , to generate the vertical displacement of the plate.
  • This provision necessarily generates variable lifting forces as a function of the level of elevation of the plate and limits the low position of the plate because of the size of the actuator.
  • the present invention aims to solve the various problems mentioned above by providing a scissor lift table, simple and economical construction, ensuring a uniform distribution of a centered load and a constant lifting force regardless of the level of elevation, whose low and high positions are optimized, suitable for both fixed and mobile applications at no extra cost and in complete safety for the operator, and being compatible with the loading height of traditional reels.
  • the invention relates to a lifting table of the kind indicated in the preamble, characterized in that it comprises at least one second actuator coupled to said chisel for moving said lifting table horizontally in guide rails formed by said lower rails in which circulating the corresponding mobile support points of said chisel.
  • the lift table is made mobile in horizontal translation very simply and safely, with no difference in level with respect to existing reels.
  • the second actuator is fixed, placed at the end of the lower rails and coupled to the chisel by a first transmission.
  • the second actuator is embedded on said chisel and coupled to the lower rails by a second transmission.
  • the point of application of the traction force or thrust of said second actuator is advantageously located in the axis of symmetry of the lift table, this axis passing through the articulation of the chisel.
  • the lift table according to the invention comprises at least a first centering rod mounted between one of the chisel legs and a fixed high point connected to the load-bearing platform, and at least one second centering rod mounted between the other leg chisel and a mobile low point flowing in the lower rails.
  • the first and second centering rods have for example a length equal to one quarter of the length of the chisel legs and the high and low points are aligned and coincident with the axis of symmetry of the table passing through the joint of the chisel.
  • the first actuator is preferably arranged in the axis of symmetry of the lifting table passing through the articulation of the chisel and extends from said articulation to said load bearing plate so that a predetermined stroke of this actuator generates a multiplied stroke of the load bearing plate. If the chisel joint is located substantially in the center of the legs; the predetermined stroke of the first actuator generates a doubled stroke of the load bearing plate.
  • the first actuator is preferably separate from the axis of symmetry of the lifting table passing through the articulation of the chisel and extends between the two legs of the chisel. This first actuator may comprise a jack, the rod may be telescopic or not.
  • the lifting table comprises two identical and parallel scissors, said first actuator being housed between the scissors carried for example by a stirrup fixed to the articulation of the scissors.
  • each chisel is associated with a pair of centering rods and the low points of the second centering rods are mounted on the same axle shaft coupled to said second actuator.
  • the scissor lift table 1, 1 ' is intended to raise and / or lower loads, especially in a horizontal plane, for example to load and / or unload a reel (not shown) .
  • this lifting table 1, 1 ' has the advantage of being movable in translation in guide rails fixed to the ground to feed a reel or the like, which can be fixed or movable.
  • the lifting table 1, 1 ' comprises a load-bearing platform 10 supported by two identical scissors 20, arranged parallel on either side of the plate 10.
  • the load-carrying tray 10 may comprise a surface upper 11 plane, vee as in the examples illustrated, cylindrical, perforated or any other suitable form.
  • Each chisel 20 consists of a pair of legs 21, 22 hinged at their intersection point called hinge 23.
  • this hinge 23 coincides with the center of the legs 21, 22 so that the chisel 20 is perfectly symmetrical with respect to the two orthogonal axes passing through the articulation 23.
  • this joint can also be distinct from the center of the legs of the chisel, the chisel then being symmetrical with respect to a single axis.
  • the ends of the legs 21, 22 of each chisel 20 form four movable support points and are equipped with rollers 24 or the like, able to circulate respectively in upper rails 6 secured to the load bearing plate 10 and in the lower rails 5 fixed on the ground or on a frame or other.
  • the lower rails 5 form guide rails in translation of the lifting table 1, 1 ', their length being determined according to the path to be traveled by said lifting table 1, 1'.
  • the lifting table 1, 1 ' comprises at least a first actuator 30, 30' for moving the load-carrying tray 10 vertically between a low position (see FIG. 3, 6) and a high position (see other figures) and conversely .
  • the actuator 30 is arranged vertically in the axis of symmetry A of the lifting table 1, perpendicular to the load bearing plate 10, passing through the hinge 23 of the chisel 20 It extends between this articulation 23 and the load bearing plate 10 directly to the load, so that it has no direct effect on the lower rails 5 and that the thrust force is only a vertical component.
  • the lower rails 5 are not subjected to any bending stress that may create linearity defects and can thus serve as guide rails for moving in translation the mobile lifting table 1.
  • the thrust force generated is always equal to that of the force developed by the actuator 30 divided by two, this ratio of 1 ⁇ 2 being fixed regardless of the level of elevation of the carrier plate load 10.
  • this 1 ⁇ 2 ratio differs according to the position of the hinge 23 of the chisel 20.
  • the stroke of the actuator 30 generates a reduced stroke of the load carrying tray 10.
  • the coefficient of This actuator 30 is preferably constituted by a cylinder with single or double effect, hydraulic, pneumatic, electric, electromagnetic, but can be constituted by any other type of equivalent actuator. It may advantageously consist of a pneumo-hydraulic jack commonly used in garages, using compressed air present in all factories, of robust and reliable construction, and available as a standard piece in commerce, and therefore economically profitable.
  • This jack may comprise a single rod or a telescopic rod 31 with two or more stages.
  • a telescopic rod 31 significantly reduces the size of the cylinder to achieve a low dead point very low when the lift table 1 is in the low position.
  • the body 32 of this jack is mounted on a yoke 33 disposed between the two scissors 20 and fixed to the hinge 23.
  • the end of the telescopic rod 31 is fixed to the load plate 10 by any known means.
  • the reverse configuration is possible, ie the cylinder body can be in direct support on the load bearing plate and the cylinder rod can be coupled to the chisel joint.
  • the lifting table 1 comprises two first parallel actuators 30', distinct from the axis of symmetry A, arranged between the two scissors 20 and extending between the two legs 21, 22 of the chisel 20. They extend more precisely between the lower end of a first leg 22 and a fulcrum of the second leg 21 located above the hinge 23.
  • the actuators 30 ' have no direct effect on the lower rails 5 and do not generate any bending stress which may create linearity defects, so that these lower rails 5 may as in the previous example serve as guide rails to move in translation the lifting table 1 'mobile.
  • the lifting table 1, 1 ' is completed by at least one centering rod 40, 50 articulated between the chisel 20 and the load plate 10 so that the latter remains centered on the axis of symmetry A of the table during its vertical movements .
  • the lifting table 1, 1 ' comprises a first centering rod 40 extending between a hinge point 41 connected to the leg 21 of the chisel 20 and a high point 42 connected to the load bearing plate 10 and a second centering rod 50 extending between a hinge point 51 connected to the other leg 22 of the chisel 20 and a low point 52 connected to the lower rails 5.
  • the centering links 40, 50 have a length equal to one quarter of the length of the legs 21, 22 of the chisel 20, the hinge points 41, 51 are placed in the middle of the relevant section of each leg 21, 22 and the high points 42 and bottom 52 are aligned with the articulation 23 of the chisel 20 and coincides with the axis of symmetry A.
  • the lifting table 1, 1 ' according to the invention is movable in guide rails constituted by said lower rails 5 of the table and comprises for this purpose at least one second actuator 60, 60 'to be coupled to the chisel 20 to move said table horizontally from right to left and vice versa.
  • the lower rails 5 preferably have a C shape to define a secure raceway, anti-crush for the feet of the operator, anti-derailment and anti-tilt.
  • the low point 52 of the second links 50 comprises at least one rolling roller 54 or the like, flowing in the lower rails 5, these rollers 54 being mounted on the same axle shaft 55.
  • the actuator 60 which may be an electric, pneumatic or hydraulic motor or the like, is attached to one end of the lower rails 5 and is arranged for pulling and pushing the axle shaft 55, via a first transmission 61 chain, cable, belt, screw-nut or the like, and thus translate the load plate 10 in both directions.
  • a hydraulic cylinder, pneumatic or similar fixed to the ground and in direct engagement with the axle shaft 55, can provide this function.
  • the first actuator 30 can easily be housed under the load-carrying plate 10, since the second actuator 60 is dissociated from the lifting table 1.
  • the actuator 60 ' which may be an electric, pneumatic, hydraulic or similar motor, is embedded on the chisel 20, carried by a chair 56 linked to the axle 55 and provided with wheels 57 flowing in the lower rails 5.
  • This actuator 60 ' is coupled to the lower rails 5 by a second transmission, such as a pinion (not visible) meshing with a rack 58 fixed to the ground between the lower rails 5, or by any equivalent means.
  • a second transmission such as a pinion (not visible) meshing with a rack 58 fixed to the ground between the lower rails 5, or by any equivalent means.
  • the stroke of the lifting table 1 ' can be increased without limit, unlike the first embodiment.
  • the first actuators 30 ' must be offset with respect to the axis of symmetry A of the table 1 'as the second actuator 60' is housed between the scissors 20 under the load plate 10.
  • the point of application of the traction or thrust force is always located in the axis of symmetry A of the table passing through the hinge 23 of the scissors 20, whatever the level of elevation. Therefore, the second actuator 60, 60 'has no effect on the vertical position of the chisel 20 and the axle shaft 55 and its rollers 54 are not carrying, the load being fully supported by the rollers rolling 24 scissors 20.
  • the lifting table 1, 1 ' according to the invention can be made cheaply due to the small amount of components, some of which are very simple to achieve in particular by oxycutting, low assembly time and some standard parts of the trade as per for example the actuators 30, 30 ', 60, 60'. It is of course possible to achieve a lifting table with two or more superimposed scissors, depending on the loading height, using the same technology.

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  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
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  • Details Of Cutting Devices (AREA)

Abstract

The table (1) has a load carrying plate (10) formed of struts (21, 22) articulated at their intersection point (23) and with four mobile support points (24) respectively moving in upper rails connected to the plate and in lower rails (5) connected to the ground. An actuator (30) e.g. hydraulic jack, is coupled to a scissor (20) to vertically displace the plate between bottom and top positions. An actuator (60) e.g. electric motor, is coupled to the scissor to horizontally displace the table in guiding rails formed by the lower rails in which the points (24) move corresponding to the scissor.

Description

Domaine technique:Technical area:

La présente invention concerne une table élévatrice à ciseau comportant un plateau porte charge supporté par au moins un ciseau formé d'une paire de jambes articulées en leur point d'intersection et pourvues de quatre points d'appui mobiles circulant respectivement dans des rails supérieurs liés au plateau porte charge et dans des rails inférieurs liés au sol ou à un châssis, et au moins un premier actionneur couplé audit ciseau pour déplacer ledit plateau porte charge verticalement entre au moins une position basse et une position haute.The present invention relates to a scissor lift table comprising a load-bearing platform supported by at least one chisel formed of a pair of legs articulated at their point of intersection and provided with four movable support points respectively flowing in linked upper rails. to the load bearing tray and in lower rails connected to the ground or to a frame, and at least one first actuator coupled to said chisel for moving said load bearing tray vertically between at least one low position and a high position.

Technique antérieure:Prior art:

Ce type de table élévatrice est couramment utilisé dans le domaine de la manutention et permet d'abaisser et/ou d'élever une charge dans un plan horizontal. Selon le domaine d'utilisation et la forme de la charge à déplacer, le plateau porte charge peut être plan ou en vé notamment pour déplacer des bobines lourdes (métaux ferreux et non ferreux, papier, film plastique, etc.) destinées au chargement et/ou au déchargement de dévidoirs. Selon la course du plateau, la table élévatrice peut être équipée d'un seul ciseau ou de plusieurs ciseaux superposés comme dans l'exemple de la publication GB 927 600 . Ce ciseau peut être dissymétrique ou symétrique. Dans la publication GB 2 301 282 , le ciseau est dissymétrique, c'est-à-dire qu'il comporte deux points d'appui fixes pourvus d'une articulation et deux points d'appui mobiles pourvus d'un galet roulant. Dans ce cas, la répartition d'une charge centrée, qui est uniformément répartie sur les quatre points d'appui en position basse du plateau, varie pendant la levée du plateau pour se concentrer sur les deux points d'appui mobiles en position haute. Ce phénomène entraîne inévitablement une usure prématurée des galets roulants, notamment en cas de charges lourdes. Ce problème est résolu par l'utilisation d'un ciseau symétrique pourvu de quatre points d'appui mobiles. Dans ce cas, des biellettes sont montées entre le plateau et les jambes du ciseau pour permettre à la table élévatrice de se déplacer dans son axe de symétrie. Un exemple est illustré dans la publication GB 326 362 .This type of lifting table is commonly used in the field of handling and allows to lower and / or raise a load in a horizontal plane. Depending on the field of use and the shape of the load to be moved, the load bearing tray can be flat or vee in particular to move heavy coils (ferrous and non-ferrous metals, paper, plastic film, etc.) intended for loading and / or unloading reels. Depending on the course of the platform, the lifting table can be equipped with a single chisel or several superimposed scissors as in the example of the publication GB 927,600 . This chisel can be asymmetrical or symmetrical. In the publication GB 2,301,282 , the chisel is asymmetrical, that is to say it has two fixed support points provided with a hinge and two movable support points provided with a roller. In this case, the distribution of a centered load, which is uniformly distributed over the four support points in the low position of the plate, varies during the lifting of the plate to focus on the two mobile support points in the high position. This phenomenon inevitably leads to premature wear of the rollers, especially in case of heavy loads. This problem is solved by the use of a symmetrical chisel provided with four movable support points. In this case, links are mounted between the plate and the legs of the chisel to allow the lift table to move in its axis of symmetry. An example is illustrated in the publication GB 326,362 .

Selon le domaine d'utilisation, la table élévatrice peut être fixe ou mobile par rapport au sol ou à un bâti. Pour la rendre mobile, la table élévatrice est portée par un chariot supplémentaire monté roulant dans des rails ouverts fixés au sol et commandé par un actionneur et une transmission mécanique à chaîne et pignons par exemple. Cette solution est onéreuse, encombrante en hauteur et source d'accident pour l'opérateur avec des risques d'écrasement de ses pieds. La hauteur de chargement étant plus élevée que pour une table élévatrice fixe, cela nécessite la fabrication de dévidoirs spécifiques à hauteur de mandrin importante d'où des prix de machines élevés. Une autre solution est décrite dans la publication US 5,339,749 dans laquelle la table élévatrice est montée sur des coulisseaux mobiles en translation horizontale par un système vis sans fin/écrous entraîné par un moteur. Ce même moteur permet en fonction du sens de rotation des vis sans fin de déplacer la table élévatrice verticalement, qui ne comporte donc pas d'actionneur propre, ce qui est très contraignant.Depending on the area of use, the lift table can be fixed or mobile relative to the ground or to a frame. To make it mobile, the lift table is carried by an additional carriage mounted rolling in open rails fixed to the ground and controlled by an actuator and a mechanical transmission chain and pinions for example. This solution is expensive, bulky in height and a source of accident for the operator with the risk of crushing his feet. The loading height being higher than for a fixed lifting table, it requires the manufacture of specific reels with high mandrel height where high machinery prices. Another solution is described in the publication US5,339,749 wherein the lift table is mounted on sliders movable in horizontal translation by a screw system / nuts driven by a motor. This same motor allows depending on the direction of rotation of the worm to move the lift table vertically, which therefore has no own actuator, which is very restrictive.

Par ailleurs, l'actionneur vertical utilisé dans ce type de table élévatrice est généralement constitué d'un vérin de tout type connu, à simple ou à double effet, monté en position inclinée soit entre un cadre inférieur et une des jambes du ciseau comme dans la publication GB 1 502 778 , soit entre le point d'intersection du ciseau et le plateau comme dans la publication GB 2 301 282 , pour générer le déplacement vertical du plateau. Cette disposition génère obligatoirement des forces d'élévation variables en fonction du niveau d'élévation du plateau et limite la position basse du plateau à cause de l'encombrement de l'actionneur. On trouve aussi des tables élévatrices dont l'actionneur est monté verticalement dans l'axe de symétrie du plateau porte-charge, entre le cadre inférieur et le point d'intersection du ciseau, permettant d'équilibrer la charge et les forces d'élévation. Un tel dispositif est décrit dans la publication JP 54 100050 . Néanmoins, dans cette solution, les rails inférieurs sont soumis à des contraintes de flexion générées par l'effort de poussée du vérin, risquant de déformer ces rails et de créer des défauts de linéarité, rendant impossible l'utilisation de ces rails comme rails de guidage pour déplacer la table élévatrice en translation par rapport au sol.Furthermore, the vertical actuator used in this type of lifting table is generally constituted by a jack of any known type, single or double effect, mounted in an inclined position or between a lower frame and one of the chisel legs as in the publication GB 1 502 778 , or between the point of intersection of the chisel and the plateau as in the publication GB 2,301,282 , to generate the vertical displacement of the plate. This provision necessarily generates variable lifting forces as a function of the level of elevation of the plate and limits the low position of the plate because of the size of the actuator. There are also tables elevators whose actuator is mounted vertically in the axis of symmetry of the load plate, between the lower frame and the point of intersection of the chisel, for balancing the load and the lifting forces. Such a device is described in the publication JP 54 100050 . However, in this solution, the lower rails are subjected to bending stresses generated by the thrust force of the cylinder, which may deform these rails and create linearity defects, making it impossible to use these rails as rails. guidance for moving the lift table in translation relative to the ground.

Exposé de l'invention:Presentation of the invention

La présente invention vise à résoudre les différents problèmes évoqués ci-dessus en proposant une table élévatrice à ciseau, de construction simple et économique, garantissant une répartition uniforme d'une charge centrée et une force d'élévation constante quel que soit le niveau d'élévation, dont les positions basse et haute sont optimisées, pouvant convenir pour des applications aussi bien fixes que mobiles sans surcoût et en toute sécurité pour l'opérateur, et étant compatibles avec la hauteur de chargement des dévidoirs traditionnels.The present invention aims to solve the various problems mentioned above by providing a scissor lift table, simple and economical construction, ensuring a uniform distribution of a centered load and a constant lifting force regardless of the level of elevation, whose low and high positions are optimized, suitable for both fixed and mobile applications at no extra cost and in complete safety for the operator, and being compatible with the loading height of traditional reels.

Dans ce but, l'invention concerne une table élévatrice du genre indiqué en préambule, caractérisée en ce qu'elle comporte au moins un second actionneur couplé audit ciseau pour déplacer ladite table élévatrice horizontalement dans des rails de guidage formés par lesdits rails inférieurs dans lesquels circulent les points d'appui mobiles correspondants dudit ciseau.For this purpose, the invention relates to a lifting table of the kind indicated in the preamble, characterized in that it comprises at least one second actuator coupled to said chisel for moving said lifting table horizontally in guide rails formed by said lower rails in which circulating the corresponding mobile support points of said chisel.

Grâce à cette construction, la table élévatrice est rendue mobile en translation horizontale très simplement et en toute sécurité, sans différence de niveau par rapport aux dévidoirs existants.Thanks to this construction, the lift table is made mobile in horizontal translation very simply and safely, with no difference in level with respect to existing reels.

Dans une première forme de réalisation, le second actionneur est fixe, placé en bout des rails inférieurs et couplé au ciseau par une première transmission. Dans une seconde forme de réalisation, le second actionneur est embarqué sur ledit ciseau et couplé aux rails inférieurs par une seconde transmission. Dans tous les cas, le point d'application de la force de traction ou de poussée dudit second actionneur est avantageusement situé dans l'axe de symétrie de la table élévatrice, cet axe passant par l'articulation du ciseau.In a first embodiment, the second actuator is fixed, placed at the end of the lower rails and coupled to the chisel by a first transmission. In a second embodiment, the second actuator is embedded on said chisel and coupled to the lower rails by a second transmission. In all cases, the point of application of the traction force or thrust of said second actuator is advantageously located in the axis of symmetry of the lift table, this axis passing through the articulation of the chisel.

De préférence, la table élévatrice selon l'invention comporte au moins une première biellette de centrage montée entre une des jambes du ciseau et un point haut fixe lié au plateau porte charge, et au moins une seconde biellette de centrage montée entre l'autre jambe du ciseau et un point bas mobile circulant dans les rails inférieurs.Preferably, the lift table according to the invention comprises at least a first centering rod mounted between one of the chisel legs and a fixed high point connected to the load-bearing platform, and at least one second centering rod mounted between the other leg chisel and a mobile low point flowing in the lower rails.

Les première et seconde biellettes de centrage ont par exemple une longueur égale au quart de la longueur des jambes du ciseau et les points haut et bas sont alignés et confondus avec l'axe de symétrie de la table passant par l'articulation du ciseau.The first and second centering rods have for example a length equal to one quarter of the length of the chisel legs and the high and low points are aligned and coincident with the axis of symmetry of the table passing through the joint of the chisel.

Dans la première variante de réalisation, le premier actionneur est de préférence disposé dans l'axe de symétrie de la table élévatrice passant par l'articulation du ciseau et s'étend de ladite articulation audit plateau porte charge de sorte qu'une course prédéterminée de cet actionneur génère une course multipliée du plateau porte charge. Si l'articulation du ciseau est située sensiblement au centre des jambes; la course prédéterminée du premier actionneur génère une course multipliée par deux du plateau porte charge. Dans la seconde variante de réalisation, le premier actionneur est de préférence distinct de l'axe de symétrie de la table élévatrice passant par l'articulation du ciseau et s'étend entre les deux jambes du ciseau. Ce premier actionneur peut comporter un vérin, dont la tige peut être télescopique ou non.In the first embodiment, the first actuator is preferably arranged in the axis of symmetry of the lifting table passing through the articulation of the chisel and extends from said articulation to said load bearing plate so that a predetermined stroke of this actuator generates a multiplied stroke of the load bearing plate. If the chisel joint is located substantially in the center of the legs; the predetermined stroke of the first actuator generates a doubled stroke of the load bearing plate. In the second embodiment, the first actuator is preferably separate from the axis of symmetry of the lifting table passing through the articulation of the chisel and extends between the two legs of the chisel. This first actuator may comprise a jack, the rod may be telescopic or not.

De manière avantageuse, la table élévatrice comporte deux ciseaux identiques et parallèles, ledit premier actionneur étant logé entre les ciseaux porté par exemple par un étrier fixé à l'articulation des ciseaux. Dans ce cas, chaque ciseau est associé à une paire de biellettes de centrage et les points bas des secondes biellettes de centrage sont montés sur un même arbre d'essieu couplé audit second actionneur.Advantageously, the lifting table comprises two identical and parallel scissors, said first actuator being housed between the scissors carried for example by a stirrup fixed to the articulation of the scissors. In this case, each chisel is associated with a pair of centering rods and the low points of the second centering rods are mounted on the same axle shaft coupled to said second actuator.

Description sommaire des dessins :Brief description of the drawings:

La présente invention et ses avantages apparaîtront mieux dans la description suivante de deux modes de réalisation donnés à titre d'exemple non limitatif, en référence aux dessins annexés, dans lesquels :

  • la figure 1 est une vue en perspective d'une table élévatrice mobile selon l'invention,
  • les figures 2 et 3 sont des vues en coupe longitudinale de la table élévatrice de la figure 1 respectivement en position haute et en position basse,
  • la figure 4 est une vue de côté de la table de la figure 1,
  • la figure 5 est une vue en coupe transversale de la table selon la ligne de coupe V-V de la figure 4,
  • les figures 6 et 7 sont des vues en coupe longitudinale d'un autre mode de réalisation d'une table élévatrice mobile selon l'invention respectivement en position basse et en position haute, et
  • les figures 8 et 9 sont des vues respectivement de coté et de dessus de la table des figures 6 et 7.
The present invention and its advantages will appear better in the following description of two embodiments given by way of non-limiting example, with reference to the appended drawings, in which:
  • FIG. 1 is a perspective view of a mobile lifting table according to the invention,
  • Figures 2 and 3 are longitudinal sectional views of the lift table of Figure 1 respectively in the high position and in the low position,
  • FIG. 4 is a side view of the table of FIG. 1,
  • FIG. 5 is a cross-sectional view of the table along section line VV of FIG. 4,
  • Figures 6 and 7 are views in longitudinal section of another embodiment of a mobile lifting table according to the invention respectively in the low position and in the high position, and
  • Figures 8 and 9 are views respectively side and top of the table of Figures 6 and 7.

Illustrations de l'invention et différentes manières de la réaliser :Illustrations of the invention and different ways of making it:

En référence aux figures, la table élévatrice à ciseau 1, 1' selon l'invention est destinée à élever et/ou à abaisser des charges, notamment dans un plan horizontal, par exemple pour charger et/ou décharger un dévidoir (non représenté). De plus, cette table élévatrice 1, 1' a l'avantage d'être mobile en translation dans des rails de guidage fixés au sol pour alimenter un dévidoir ou similaire, qui peut être fixe ou mobile. La table élévatrice 1, 1' comporte un plateau porte charge 10 supporté par deux ciseaux 20 identiques, disposés parallèlement de part et d'autre du plateau 10. Selon la géométrie de la charge à manutentionner, le plateau porte charge 10 peut comporter une surface supérieure 11 plane, en vé comme dans les exemples illustrés, cylindrique, ajourée ou de toute autre forme adaptée.With reference to the figures, the scissor lift table 1, 1 'according to the invention is intended to raise and / or lower loads, especially in a horizontal plane, for example to load and / or unload a reel (not shown) . In addition, this lifting table 1, 1 'has the advantage of being movable in translation in guide rails fixed to the ground to feed a reel or the like, which can be fixed or movable. The lifting table 1, 1 'comprises a load-bearing platform 10 supported by two identical scissors 20, arranged parallel on either side of the plate 10. Depending on the geometry of the load to be handled, the load-carrying tray 10 may comprise a surface upper 11 plane, vee as in the examples illustrated, cylindrical, perforated or any other suitable form.

Chaque ciseau 20 est constitué d'une paire de jambes 21, 22 articulées en leur point d'intersection appelé articulation 23. Dans les exemples illustrés, cette articulation 23 est confondue avec le centre des jambes 21, 22 de sorte que le ciseau 20 est parfaitement symétrique par rapport aux deux axes orthogonaux passant par l'articulation 23. Dans d'autres variantes non représentées, cette articulation peut aussi être distincte du centre des jambes du ciseau, le ciseau étant alors symétrique par rapport à un seul axe. Les extrémités des jambes 21, 22 de chaque ciseau 20 forment quatre points d'appui mobiles et sont équipées de galets roulants 24 ou similaires, aptes à circuler respectivement dans des rails supérieurs 6 solidaires du plateau porte charge 10 et dans les rails inférieurs 5 fixés au sol ou sur un bâti ou autre. Les rails inférieurs 5 forment des rails de guidage en translation de la table élévatrice 1, 1', leur longueur étant déterminée en fonction du trajet à parcourir par ladite table élévatrice 1, 1'.Each chisel 20 consists of a pair of legs 21, 22 hinged at their intersection point called hinge 23. In the examples shown, this hinge 23 coincides with the center of the legs 21, 22 so that the chisel 20 is perfectly symmetrical with respect to the two orthogonal axes passing through the articulation 23. In other variants not shown, this joint can also be distinct from the center of the legs of the chisel, the chisel then being symmetrical with respect to a single axis. The ends of the legs 21, 22 of each chisel 20 form four movable support points and are equipped with rollers 24 or the like, able to circulate respectively in upper rails 6 secured to the load bearing plate 10 and in the lower rails 5 fixed on the ground or on a frame or other. The lower rails 5 form guide rails in translation of the lifting table 1, 1 ', their length being determined according to the path to be traveled by said lifting table 1, 1'.

La table élévatrice 1, 1' comporte au moins un premier actionneur 30, 30' pour déplacer le plateau porte charge 10 verticalement entre une position basse (cf. fig. 3, 6) et une position haute (cf. autres figures) et inversement.The lifting table 1, 1 'comprises at least a first actuator 30, 30' for moving the load-carrying tray 10 vertically between a low position (see FIG. 3, 6) and a high position (see other figures) and conversely .

Dans le premier mode de réalisation illustré par les figures 1 à 5, l'actionneur 30 est disposé verticalement dans l'axe de symétrie A de la table élévatrice 1, perpendiculaire au plateau porte charge 10, passant par l'articulation 23 du ciseau 20. Il s'étend entre cette articulation 23 et le plateau porte charge 10 directement au droit de la charge, de sorte qu'il n'a pas d'effet direct sur les rails inférieurs 5 et que la force de poussée n'a qu'une composante verticale. Grâce à cette construction, les rails inférieurs 5 ne sont soumis à aucune contrainte de flexion risquant de créer des défauts de linéarité et peuvent ainsi servir de rails de guidage pour déplacer en translation la table élévatrice 1 mobile. De plus, la force de poussée générée est toujours égale à celle de la force développée par l'actionneur 30 divisée par deux, ce rapport de ½ étant fixe quel que soit le niveau d'élévation du plateau porte charge 10. Bien entendu, ce rapport de ½ diffère selon la position de l'articulation 23 du ciseau 20. De plus, la course de l'actionneur 30 génère une course démultipliée du plateau porte charge 10. Dans cet exemple où le ciseau 20 est parfaitement symétrique, le coefficient de démultiplication est égal à 2. Cet actionneur 30 est de préférence constitué d'un vérin à simple ou double effet, hydraulique, pneumatique, électrique, électromagnétique, mais peut être constitué par tout autre type d'actionneur équivalent. Il peut être avantageusement constitué d'un cric pneumo-hydraulique couramment utilisé dans les garages, utilisant de l'air comprimé présent dans toutes les usines, de construction robuste et fiable, et disponible en pièce standard dans le commerce, donc économiquement rentable. Ce vérin peut comporter une tige simple ou une tige télescopique 31 à deux ou plusieurs étages. L'utilisation d'une tige télescopique 31 permet de réduire considérablement l'encombrement du vérin permettant d'atteindre un point mort bas très bas lorsque la table élévatrice 1 est en position basse. Le corps 32 de ce vérin est monté sur un étrier 33 disposé entre les deux ciseaux 20 et fixé à l'articulation 23. L'extrémité de la tige télescopique 31 est fixée au plateau porte charge 10 par tout moyen connu. Bien entendu, la configuration inverse est possible, à savoir le corps du vérin peut être en appui direct sur le plateau porte charge et la tige du vérin peut être couplée à l'articulation du ciseau.In the first embodiment illustrated in FIGS. 1 to 5, the actuator 30 is arranged vertically in the axis of symmetry A of the lifting table 1, perpendicular to the load bearing plate 10, passing through the hinge 23 of the chisel 20 It extends between this articulation 23 and the load bearing plate 10 directly to the load, so that it has no direct effect on the lower rails 5 and that the thrust force is only a vertical component. With this construction, the lower rails 5 are not subjected to any bending stress that may create linearity defects and can thus serve as guide rails for moving in translation the mobile lifting table 1. In addition, the thrust force generated is always equal to that of the force developed by the actuator 30 divided by two, this ratio of ½ being fixed regardless of the level of elevation of the carrier plate load 10. Of course, this ½ ratio differs according to the position of the hinge 23 of the chisel 20. In addition, the stroke of the actuator 30 generates a reduced stroke of the load carrying tray 10. In this example where the chisel 20 is perfectly symmetrical, the coefficient of This actuator 30 is preferably constituted by a cylinder with single or double effect, hydraulic, pneumatic, electric, electromagnetic, but can be constituted by any other type of equivalent actuator. It may advantageously consist of a pneumo-hydraulic jack commonly used in garages, using compressed air present in all factories, of robust and reliable construction, and available as a standard piece in commerce, and therefore economically profitable. This jack may comprise a single rod or a telescopic rod 31 with two or more stages. The use of a telescopic rod 31 significantly reduces the size of the cylinder to achieve a low dead point very low when the lift table 1 is in the low position. The body 32 of this jack is mounted on a yoke 33 disposed between the two scissors 20 and fixed to the hinge 23. The end of the telescopic rod 31 is fixed to the load plate 10 by any known means. Of course, the reverse configuration is possible, ie the cylinder body can be in direct support on the load bearing plate and the cylinder rod can be coupled to the chisel joint.

Dans le second mode de réalisation illustré par les figures 6 à 9, la table élévatrice 1' comporte deux premiers actionneurs 30' parallèles, distincts de l'axe de symétrie A, , disposés entre les deux ciseaux 20 et s'étendant entre les deux jambes 21, 22 du ciseau 20. Ils s'étendent plus précisément entre l'extrémité inférieure d'une première jambe 22 et un point d'appui de la seconde jambe 21 situé au dessus de l'articulation 23. Dans cette configuration, les actionneurs 30' n'ont pas d'effet direct sur les rails inférieurs 5 et ne génèrent aucune contrainte de flexion risquant de créer des défauts de linéarité, de sorte que ces rails inférieurs 5 peuvent comme pour l'exemple précédent servir de rails de guidage pour déplacer en translation la table élévatrice 1' mobile.In the second embodiment illustrated in FIGS. 6 to 9, the lifting table 1 'comprises two first parallel actuators 30', distinct from the axis of symmetry A, arranged between the two scissors 20 and extending between the two legs 21, 22 of the chisel 20. They extend more precisely between the lower end of a first leg 22 and a fulcrum of the second leg 21 located above the hinge 23. In this configuration, the actuators 30 'have no direct effect on the lower rails 5 and do not generate any bending stress which may create linearity defects, so that these lower rails 5 may as in the previous example serve as guide rails to move in translation the lifting table 1 'mobile.

La table élévatrice 1, 1' est complétée par au moins une biellette de centrage 40, 50 articulée entre le ciseau 20 et le plateau porte charge 10 pour que ce dernier reste centré sur l'axe de symétrie A de la table pendant ses déplacements verticaux. Dans les exemples représentés, la table élévatrice 1, 1' comporte une première biellette de centrage 40 s'étendant entre un point d'articulation 41 lié à la jambe 21 du ciseau 20 et un point haut 42 lié au plateau porte charge 10 et une seconde biellette de centrage 50 s'étendant entre un point d'articulation 51 lié à l'autre jambe 22 du ciseau 20 et un point bas 52 lié aux rails inférieurs 5. Dans les exemples représentés, les biellettes de centrage 40, 50 ont une longueur égale au quart de la longueur des jambes 21, 22 du ciseau 20, les points d'articulation 41, 51 sont placés au milieu du tronçon concerné de chaque jambe 21, 22 et les points haut 42 et bas 52 sont alignés avec l'articulation 23 du ciseau 20 et confondus avec l'axe de symétrie A. La table élévatrice 1, 1' selon l'invention est mobile dans des rails de guidage constitués par lesdits rails inférieurs 5 de la table et comporte à cet effet au moins un second actionneur 60, 60' coupler au ciseau 20 pour déplacer ladite table horizontalement de droite à gauche et inversement. Dans ce cas, les rails inférieurs 5 ont de préférence une forme en C pour définir un chemin de roulement sécurisé, anti-écrasement pour les pieds de l'opérateur, anti-déraillement et anti-basculement. Le point bas 52 des secondes biellettes 50 comporte au moins un galet roulant 54 ou similaire, circulant dans les rails inférieurs 5, ces galets roulants 54 étant montés sur un même arbre d'essieu 55.The lifting table 1, 1 'is completed by at least one centering rod 40, 50 articulated between the chisel 20 and the load plate 10 so that the latter remains centered on the axis of symmetry A of the table during its vertical movements . In the examples shown, the lifting table 1, 1 'comprises a first centering rod 40 extending between a hinge point 41 connected to the leg 21 of the chisel 20 and a high point 42 connected to the load bearing plate 10 and a second centering rod 50 extending between a hinge point 51 connected to the other leg 22 of the chisel 20 and a low point 52 connected to the lower rails 5. In the examples shown, the centering links 40, 50 have a length equal to one quarter of the length of the legs 21, 22 of the chisel 20, the hinge points 41, 51 are placed in the middle of the relevant section of each leg 21, 22 and the high points 42 and bottom 52 are aligned with the articulation 23 of the chisel 20 and coincides with the axis of symmetry A. The lifting table 1, 1 'according to the invention is movable in guide rails constituted by said lower rails 5 of the table and comprises for this purpose at least one second actuator 60, 60 'to be coupled to the chisel 20 to move said table horizontally from right to left and vice versa. In this case, the lower rails 5 preferably have a C shape to define a secure raceway, anti-crush for the feet of the operator, anti-derailment and anti-tilt. The low point 52 of the second links 50 comprises at least one rolling roller 54 or the like, flowing in the lower rails 5, these rollers 54 being mounted on the same axle shaft 55.

Dans le premier mode de réalisation en référence aux figures 1 à 5, destiné aux translations de longueur moyenne, l'actionneur 60 qui peut être un moteur électrique, pneumatique, hydraulique ou similaire, est fixé à une extrémité des rails inférieurs 5 et est agencé pour tirer et pousser l'arbre d'essieu 55, par l'intermédiaire d'une première transmission 61 à chaîne, câble, courroie, vis-écrou ou similaire, et translater ainsi le plateau porte charge 10 dans les deux sens. Pour les translations courtes, un vérin hydraulique, pneumatique ou similaire, fixé au sol et en prise directe avec l'arbre d'essieu 55, peut assurer cette fonction. Dans cette variante, le premier actionneur 30 peut être facilement logé sous le plateau porte charge 10, étant donné que le second actionneur 60 est dissocié de la table élévatrice 1.In the first embodiment with reference to FIGS. 1 to 5, intended for medium length translations, the actuator 60, which may be an electric, pneumatic or hydraulic motor or the like, is attached to one end of the lower rails 5 and is arranged for pulling and pushing the axle shaft 55, via a first transmission 61 chain, cable, belt, screw-nut or the like, and thus translate the load plate 10 in both directions. For short translations, a hydraulic cylinder, pneumatic or similar, fixed to the ground and in direct engagement with the axle shaft 55, can provide this function. In this variant, the first actuator 30 can easily be housed under the load-carrying plate 10, since the second actuator 60 is dissociated from the lifting table 1.

Dans le second mode de réalisation en référence aux figures 6 à 9, destiné aux translations de longueur importante, l'actionneur 60' qui peut être un moteur électrique, pneumatique, hydraulique ou similaire, est embarqué sur le ciseau 20, porté par une chaise 56 liée à l'essieu 55 et munie de roues 57 circulant dans les rails inférieurs 5. Cet actionneur 60' est couplé aux rails inférieurs 5 par une seconde transmission, telle qu'un pignon (non visible) engrenant une crémaillère 58 fixée au sol entre les rails inférieurs 5, ou par tout moyen équivalent. Grâce à cette construction, la course de la table élévatrice 1' peut être augmentée sans limite, à l'inverse du premier mode de réalisation. Dans cette variante, les premiers actionneurs 30' doivent être décalés par rapport à l'axe de symétrie A de la table élévatrice 1', étant donné que le second actionneur 60' est logé entre les ciseaux 20 sous le plateau porte charge 10.In the second embodiment with reference to FIGS. 6 to 9, intended for translations of considerable length, the actuator 60 'which may be an electric, pneumatic, hydraulic or similar motor, is embedded on the chisel 20, carried by a chair 56 linked to the axle 55 and provided with wheels 57 flowing in the lower rails 5. This actuator 60 'is coupled to the lower rails 5 by a second transmission, such as a pinion (not visible) meshing with a rack 58 fixed to the ground between the lower rails 5, or by any equivalent means. With this construction, the stroke of the lifting table 1 'can be increased without limit, unlike the first embodiment. In this variant, the first actuators 30 'must be offset with respect to the axis of symmetry A of the table 1 'as the second actuator 60' is housed between the scissors 20 under the load plate 10.

Dans les deux modes de réalisation, le point d'application de la force de traction ou de poussée est toujours situé dans l'axe de symétrie A de la table passant par l'articulation 23 des ciseaux 20, quel que soit le niveau d'élévation. De ce fait, le second actionneur 60, 60' n'a aucun effet sur la position verticale du ciseau 20 et l'arbre d'essieu 55 ainsi que ses galets roulants 54 ne sont pas porteurs, la charge étant entièrement supportée par les galets roulants 24 des ciseaux 20.In both embodiments, the point of application of the traction or thrust force is always located in the axis of symmetry A of the table passing through the hinge 23 of the scissors 20, whatever the level of elevation. Therefore, the second actuator 60, 60 'has no effect on the vertical position of the chisel 20 and the axle shaft 55 and its rollers 54 are not carrying, the load being fully supported by the rollers rolling 24 scissors 20.

Possibilités d'application industrielle :Possibilities of industrial application:

La table élévatrice 1, 1' selon l'invention peut être réalisée à moindre coût dû à la faible quantité de composants, dont certains sont très simples à réaliser notamment par oxycoupage, au faible temps de montage et à certaines pièces standard du commerce comme par exemple les actionneurs 30, 30', 60, 60'. Il est bien entendu possible de réaliser une table élévatrice pourvue de deux ciseaux superposés ou plus, en fonction de la hauteur de chargement, en utilisation la même technologie.The lifting table 1, 1 'according to the invention can be made cheaply due to the small amount of components, some of which are very simple to achieve in particular by oxycutting, low assembly time and some standard parts of the trade as per for example the actuators 30, 30 ', 60, 60'. It is of course possible to achieve a lifting table with two or more superimposed scissors, depending on the loading height, using the same technology.

Il ressort clairement de cette description que l'invention permet d'atteindre les buts fixés, à savoir essentiellement une table élévatrice simple, robuste, très économique, dont la construction et la géométrie n'entraînent jamais de surcharge risquant de déformer voire de casser la machine comme dans l'art antérieur. Cette table élévatrice est rendue mobile en translation horizontale très simplement et en toute sécurité, sans différence de niveau par rapport aux dévidoirs existants et autres machines disposées en amont et en aval.It is clear from this description that the invention achieves the goals set, namely essentially a lift table simple, robust, very economical, whose construction and geometry never cause overload may deform or even break the machine as in the prior art. This lifting table is made mobile in horizontal translation very simply and safely, with no difference in level with existing reels and other machines arranged upstream and downstream.

La présente invention n'est pas limitée aux exemples de réalisation décrits mais s'étend à toute modification et variante évidentes pour un homme du métier tout en restant dans l'étendue de la protection définie dans les revendications annexées.The present invention is not limited to the embodiments described but extends to any modification and variation obvious to a person skilled in the art while remaining within the scope of protection defined in the appended claims.

Claims (14)

Table élévatrice (1, 1') à ciseau comportant un plateau porte charge (10) supporté par au moins un ciseau (20) formé d'une paire de jambes (21, 22) articulées en leur point d'intersection (23) et pourvues de quatre points d'appui mobiles (24) circulant respectivement dans des rails supérieurs (6) liés audit plateau porte charge (10) et dans des rails inférieurs (5) liés au sol ou à un châssis, et au moins un premier actionneur (30) couplé audit ciseau (20) pour déplacer ledit plateau porte charge (10) verticalement entre une position basse et une position haute, caractérisée en ce qu'il comporte au moins un second actionneur (60, 60') couplé audit ciseau (20) pour déplacer ladite table élévatrice (1, 1') horizontalement dans des rails de guidage formés par lesdits rails inférieurs (5) dans lesquels circulent les points d'appui mobiles correspondants dudit ciseau (20).Scissor lift table (1, 1 ') comprising a load-bearing tray (10) supported by at least one chisel (20) formed by a pair of legs (21, 22) articulated at their point of intersection (23) and provided with four movable support points (24) respectively flowing in upper rails (6) connected to said load bearing plate (10) and in lower rails (5) connected to the ground or chassis, and at least one first actuator (30) coupled to said chisel (20) for moving said load bearing tray (10) vertically between a low position and a high position, characterized in that it comprises at least a second actuator (60, 60 ') coupled to said chisel ( 20) for moving said lifting table (1, 1 ') horizontally in guide rails formed by said lower rails (5) in which the corresponding movable support points of said chisel (20) circulate. Table élévatrice selon la revendication 1, caractérisée en ce que ledit second actionneur (60) est fixe, placé en bout desdits rails inférieurs (5) et couplé audit ciseau (20) par une première transmission (61).Lifting table according to claim 1, characterized in that said second actuator (60) is fixed, placed at the end of said lower rails (5) and coupled to said chisel (20) by a first transmission (61). Table élévatrice selon la revendication 1, caractérisée en ce que ledit second actionneur (60') est embarqué sur ledit ciseau (20) et couplé auxdits rails inférieurs (5) par une seconde transmission (58).Lifting table according to claim 1, characterized in that said second actuator (60 ') is embedded on said chisel (20) and coupled to said lower rails (5) by a second transmission (58). Table élévatrice selon l'une des revendications 2 ou 3, caractérisée en ce que le point d'application de la force de traction ou de poussée dudit second actionneur (60, 60') est situé dans l'axe de symétrie (A) de ladite table élévatrice (1, 1'), cet axe passant par l'articulation (23) dudit ciseau (20).Lifting table according to one of claims 2 or 3, characterized in that the point of application of the traction or thrust force of said second actuator (60, 60 ') is located in the axis of symmetry (A) of said lifting table (1, 1 '), this axis passing through the hinge (23) of said chisel (20). Table élévatrice selon la revendication 1, caractérisée en ce qu'elle comporte au moins une première biellette de centrage (40) montée entre une des jambes (21) du ciseau (20) et un point haut (42) lié audit plateau porte charge (10), et au moins une seconde biellette de centrage (50) montée entre l'autre jambe (22) du ciseau (20) et un point bas (52) circulant dans lesdits rails inférieurs (5).Lifting table according to claim 1, characterized in that it comprises at least a first centering rod (40) mounted between one of the legs (21) of the a chisel (20) and a high point (42) connected to said load bearing plate (10), and at least a second centering rod (50) mounted between the other leg (22) of the chisel (20) and a low point ( 52) flowing in said lower rails (5). Table élévatrice selon la revendication 5, caractérisée en ce que lesdites première et seconde biellettes de centrage (40, 50) ont une longueur égale au quart de la longueur des jambes (21, 22) du ciseau (20) et en ce que lesdits points haut (42) et bas (52) sont alignés et confondus avec l'axe de symétrie (A) passant par l'articulation (23) dudit ciseau (20).Lifting table according to claim 5, characterized in that said first and second centering rods (40, 50) have a length equal to one quarter of the length of the legs (21, 22) of the chisel (20) and in that said points top (42) and bottom (52) are aligned and coincides with the axis of symmetry (A) passing through the hinge (23) of said chisel (20). Table élévatrice selon la revendication 1, caractérisée en ce que ledit premier actionneur (30) est disposé dans l'axe de symétrie (A) de la table élévatrice (1) passant par l'articulation (23) dudit ciseau (20) et s'étend de ladite articulation (23) audit plateau porte charge (10) de sorte qu'une course prédéterminée dudit actionneur (30) génère une course multipliée dudit plateau porte charge (10).Lifting table according to claim 1, characterized in that said first actuator (30) is arranged in the axis of symmetry (A) of the lifting table (1) passing through the articulation (23) of said chisel (20) and extending said hinge (23) to said load bearing plate (10) such that a predetermined stroke of said actuator (30) generates a multiplied stroke of said load bearing plate (10). Table élévatrice selon la revendication 7, caractérisée en ce que ladite articulation (23) du ciseau (20) est située au centre desdites jambes (21, 22) de sorte que la course prédéterminée dudit actionneur (30) génère une course multipliée par deux dudit plateau porte charge (10).Lifting table according to claim 7, characterized in that said hinge (23) of the chisel (20) is located in the center of said legs (21, 22) so that the predetermined stroke of said actuator (30) generates a doubled stroke of said load carrying tray (10). Table élévatrice selon la revendication 1, caractérisée en ce que ledit premier actionneur (30) est distinct de l'axe de symétrie (A) de la table élévatrice (1) passant par l'articulation (23) dudit ciseau (20) et s'étend entre les deux jambes (21, 22) dudit ciseau (20).Lifting table according to claim 1, characterized in that said first actuator (30) is distinct from the axis of symmetry (A) of the lifting table (1) passing through the articulation (23) of said chisel (20) and extends between the two legs (21, 22) of said chisel (20). Table élévatrice selon l'une quelconque des revendications 7 à 9, caractérisée en ce que ledit actionneur (30) comporte un vérin.Lifting table according to any one of claims 7 to 9, characterized in that said actuator (30) comprises a jack. Table élévatrice selon la revendication 10, caractérisée en ce que ledit vérin comporte une tige télescopique (31).Lifting table according to claim 10, characterized in that said cylinder comprises a telescopic rod (31). Table élévatrice selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle comporte deux ciseaux (20) identiques et parallèles, ledit premier actionneur (30) étant logé entre lesdits ciseaux (20).Lifting table according to any one of the preceding claims, characterized in that it comprises two identical and parallel scissors (20), said first actuator (30) being housed between said scissors (20). Table élévatrice selon la revendication 12, caractérisée en ce que ledit premier actionneur (30) est porté par un étrier (33) fixé à l'articulation (23) desdits ciseaux (20).Lifting table according to claim 12, characterized in that said first actuator (30) is carried by a stirrup (33) fixed to the articulation (23) of said scissors (20). Table élévatrice selon la revendication 12, caractérisée en ce que chaque ciseau (20) est associé à une paire de biellettes de centrage (40, 50) et en ce que les points bas (52) des secondes biellettes de centrage (50) sont montés sur un même arbre d'essieu (55), lequel est couplé audit second actionneur (60, 60').Lifting table according to claim 12, characterized in that each chisel (20) is associated with a pair of centering rods (40, 50) and in that the low points (52) of the second centering links (50) are mounted on the same axle shaft (55), which is coupled to said second actuator (60, 60 ').
EP20070360052 2006-10-20 2007-10-18 Scissor lift Expired - Fee Related EP1914193B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0609206A FR2907441B1 (en) 2006-10-20 2006-10-20 LIFTING TABLE WITH CHISEL.

Publications (3)

Publication Number Publication Date
EP1914193A1 true EP1914193A1 (en) 2008-04-23
EP1914193A8 EP1914193A8 (en) 2008-06-25
EP1914193B1 EP1914193B1 (en) 2010-01-13

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ID=38055170

Family Applications (1)

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EP (1) EP1914193B1 (en)
DE (1) DE602007004274D1 (en)
FR (1) FR2907441B1 (en)

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WO2011116860A1 (en) * 2010-03-26 2011-09-29 Loesche Gmbh Roller mill
CN104310009A (en) * 2014-10-10 2015-01-28 广东嘉腾机器人自动化有限公司 Feeding and blanking mechanism
US9522625B2 (en) 2014-05-30 2016-12-20 Troy A. Myers Boat loading allignment device and method
CN106744473A (en) * 2016-09-27 2017-05-31 王俊峰 A kind of Liftable type Kudzu root slicing machine mobile device
US9808080B2 (en) 2015-04-01 2017-11-07 Kinder Design Inc. Portable height-adjustable tabletop assembly and method of adjusting a height of the same
CN111503484A (en) * 2020-04-28 2020-08-07 哈尔滨工业大学 Displacement meter fixing device used in structure or component loading test

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CN111232870B (en) * 2018-11-29 2022-03-18 比亚迪股份有限公司 Lifting platform for charging system and charging system
CN112607647A (en) * 2020-12-14 2021-04-06 温州竺陌机械科技有限公司 Jack with auxiliary support leg
CN112607646A (en) * 2020-12-14 2021-04-06 温州竺陌机械科技有限公司 Jack with replaceable contact component

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GB878714A (en) * 1958-06-16 1961-10-04 Amalgamated Dental Co Ltd Hoist
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WO2011116860A1 (en) * 2010-03-26 2011-09-29 Loesche Gmbh Roller mill
CN102711997A (en) * 2010-03-26 2012-10-03 勒舍有限公司 Roller mill
JP2013523418A (en) * 2010-03-26 2013-06-17 ロエシェ ゲーエムベーハー Roller mill
CN102711997B (en) * 2010-03-26 2014-08-13 勒舍有限公司 Roller mill
US9522625B2 (en) 2014-05-30 2016-12-20 Troy A. Myers Boat loading allignment device and method
CN104310009A (en) * 2014-10-10 2015-01-28 广东嘉腾机器人自动化有限公司 Feeding and blanking mechanism
CN104310009B (en) * 2014-10-10 2016-09-07 广东嘉腾机器人自动化有限公司 A kind of charging and discharging mechanism
US9808080B2 (en) 2015-04-01 2017-11-07 Kinder Design Inc. Portable height-adjustable tabletop assembly and method of adjusting a height of the same
CN106744473A (en) * 2016-09-27 2017-05-31 王俊峰 A kind of Liftable type Kudzu root slicing machine mobile device
CN111503484A (en) * 2020-04-28 2020-08-07 哈尔滨工业大学 Displacement meter fixing device used in structure or component loading test

Also Published As

Publication number Publication date
EP1914193A8 (en) 2008-06-25
DE602007004274D1 (en) 2010-03-04
FR2907441A1 (en) 2008-04-25
EP1914193B1 (en) 2010-01-13
FR2907441B1 (en) 2009-06-12

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