EP1486452B1 - System for lifting and stabilising a suspended load support - Google Patents

System for lifting and stabilising a suspended load support Download PDF

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Publication number
EP1486452B1
EP1486452B1 EP04102502A EP04102502A EP1486452B1 EP 1486452 B1 EP1486452 B1 EP 1486452B1 EP 04102502 A EP04102502 A EP 04102502A EP 04102502 A EP04102502 A EP 04102502A EP 1486452 B1 EP1486452 B1 EP 1486452B1
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EP
European Patent Office
Prior art keywords
suspension
support
pulleys
rotation
supports
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EP04102502A
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German (de)
French (fr)
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EP1486452A3 (en
EP1486452A2 (en
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Roger Mangin
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Secalt SA
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Secalt SA
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
    • B66C13/06—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
    • B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions

Definitions

  • the invention relates to a system for suspending and lifting a load carrier, according to the preamble of the first claim.
  • a type of device for suspending and lifting a load carrier, such as a work platform, according to which this support is suspended by means of four suspension strings constituted in total by at least two links only, such as cables, each suspended at a fixed point on the side of one of the ends of the load support, and passing through circular rotary return carriers such as pulleys at both ends of the load support, to connect each to a lifting means such as a winch placed above the other end of the load support.
  • These circular supports are arranged to rotate in solidarity with the links they support. They may be located not at the ends of the load support but only towards its ends equidistant from the center of this support, without this changing the process of obtaining the result pursued.
  • the suspension strands of such a device are arranged vertically, but it can also be applied to oblique suspension strands.
  • the center of gravity (G) of the load support is placed below the transverse strands of the cables joining the pulleys, so as to ensure the transverse stability of the support.
  • This system has the advantage of requiring only two lifting means for four suspension strands.
  • the figure 1 gives a schematic illustration of such a device.
  • the device as described above has the disadvantage of having a load support leaning longitudinally on the side of the rolling load of the pulleys on the cable. when this load moves out of the gravity axis Ag of the support to one of the suspension ends. For example, as soon as a user, located on such a support consisting of a nacelle, initially horizontal, leaves the center thereof to go to one or the other of its ends, the nacelle leans on the same side. The slope increases until the floor of the nacelle approaches a position aligned with the suspension strand of the cable located on the side opposite to that of the displacement of the load, as represented by the figure 2 .
  • the following indications refer more particularly to a load carrier constituted by a nacelle, successively described with one and then two links each consisting of a cable passing over pulleys and actuated by a winding-type winch, but the invention also applies to all lifting devices and to all equivalent mounting load carriers, for example those in which the links are chains, the circular cable supports would be chain sprockets and / or the load support would be a spreader, these embodiments are not limiting.
  • the indications below apply to a system as described in which at least one of the two links would pass over two pulleys on each end axis, making additional returns between the two ends of the support. They also apply in case the system has more than two links.
  • a system for suspending and lifting a load carrier according to the preamble of the independent claim is described in the application for German Patent DE-A-40 05 194 .
  • This known system serves to prevent the oscillation of a load support suspended by cables under a mobile carriage in the horizontal direction.
  • Two lifting systems are provided each having a cable winding drum at each end of the carriage.
  • the load support is suspended by four cables passing through four pairs of pulleys rotating about axes parallel to the axes of the drums, a pair being located at each load bearing corner.
  • Four other suspension cables are also attached to the drums and pass through pulleys provided on the load support but rotate about axes oriented at an angle of 90 ° to the axis of rotation of the drums and the four pairs of pulleys. above.
  • the problem of the invention is to achieve by simple means a system of the aforementioned type, having the advantage of maintaining the load support in a stable and unchanged position when the point of application of the load is not n 'is more placed in the center of the support, that is to say at equal distance from the suspension points of the system.
  • this problem is solved by a system for suspending and lifting a load carrier, applied to two opposite ends of this support, the support being suspended by at least four suspension strands consisting of at least two links, each of which is suspended towards one of these ends at a fixed point and towards the other end to the driving member of a hoisting apparatus, passing through circular return supports, rotatably secured with these links, on parallel axes respectively fixed to each end of the load support; each link being connected to its lifting means on the side of the end of the load support opposite to that on the side of which the other link is connected to the other lifting means; characterized in that at least one of the links is bent and passes successively on at least two additional intermediate circular supports located towards each end, following a cross path such that, on at least one of the end axes, at least one intermediate circular support of said link rotates in the same direction as at least one coaxial circular support of the other link under the identical action of the two lifting means applying to the links, while these two coaxial circular supports are respectively solicited by
  • the device according to the invention keeps it in this position when the person or persons located in platform debt move from one end to another of the latter.
  • the invention makes it possible to reconcile the obtaining of this result with the maneuvering of the support, in particular of the nacelle, in ascent and descent.
  • the other link is also bent and passes successively on at least two additional intermediate circular supports located towards each end, according to a crossed path such that, on the other of the end axes, at least one support intermediate circular of the other aforementioned link rotates in the same direction as at least one coaxial circular support of the first link under the identical action of the two lifting means applying to the links, while these two coaxial circular supports are respectively solicited by a pair of the same intensified and opposite directions when their common axis is urged by the same force downwards or upwards, not related to the action of the lifting means, and in that these two coaxial circular supports have the same pitch diameter and are secured in rotation so that a rotation in the opposite direction of these two coaxial supports under the effect of said force is prevented without the action of the lifting means on the coaxial circular supports, through the links, is hindered.
  • the pulleys on the left axis are called “A” and the pulleys on the right axis are called “B”.
  • the figure 4 represents a known load suspension and lifting system comprising on the one hand a support or nacelle S, which can be schematized in plan by a rectangular frame, comprising, on the one hand at each end considered in the longitudinal direction, a transverse axis Ax, the two axes Ax being parallel horizontal, and each carrying a pulley A, B, and secondly a cable C for the suspension of the support S, said cable C being fixed at a higher point Pf located vertically above one end of the support S, passing through the two pulleys A, B thereof and then winding to a winch T fixed at a point located vertically above the other end of the support S.
  • the figure 4 shows a support diagram S in elevation, and the figure 5 the corresponding diagram in plan. These diagrams can be applied to other structures than a nacelle, for example a rudder.
  • the direction of rotation of a pulley A or B, for a vertical movement in the same direction as in the first case will be the same as in this first case for the pulley located on the side of the fixed point of suspension, and will be the opposite for the pulley located on the side of the winch.
  • FIG 11 illustrates this montage, doubling that of the figure 8 .
  • the winches must naturally wind and unwind the cable at an identical linear speed to obtain a proper vertical movement of the support.
  • the object of the invention is to stabilize the position of the support in case of displacement of its load while allowing its two cables to go up or down at the same time under the action of their respective winches.
  • At least one of the two cables is mittled, by passing it over at least two pulleys A2, A3 and B2, B3 on each axis Ax end of the support, or on at least four pulleys, so as to obtain a a cable circuit such that, on the same axle Ax, it is possible for a pulley belonging to the circuit to be rotated in the same direction as the coaxial pulley A1, B1 of the non-inflated circuit under the identical action of the two winches (lowering or climbing) and are biased, by an eccentric load, in a direction of rotation opposite to that of the pulley of the immersed circuit, in a rolling motion on the stationary cables.
  • the result of the invention is then obtained by joining these two pulleys.
  • pulleys A1, A3, B1, B3 located at the lower end of the vertical strands and the "intermediate pulleys", the other pulleys A2, B2, that is to say those which are connected, will be referred to as "end pulleys". by transverse strands, each only to another pulley.
  • A1 is the left pulley (in direct suspension) of the single cable, A2, the left intermediate pulley of the cable and A3, the left end pulley of the cable. The corresponding numbering will be given to the right pulleys.
  • the "uncomplicated" cable C2 will be called “single cable”.
  • the position of the winches T1, T2 is indifferent. Let us suppose, to present the simplest diagram, that the two winches T1, T2 are placed on the same side, for example on the right side, the haulage connecting the pulleys A2, A3 and B2, B3 without crossing, according to the figure 13 . Take the case of the load moving to the left.
  • the desired stabilization result would thus be obtained, since these two pulleys, each belonging to a different cable circuit, would then be loaded, under the effect of a displacement of the load on the support, by equal and inverse couples.
  • the solidified coaxial pulleys must have the same pitch diameter.
  • crossover means that a cross-cable run goes from a lower side of an end pulley to an upper side of an intermediate pulley, the next cross-cable run goes to the lower side of the intermediate pulley. mentioned above to the upper side of the other intermediate pulley and the subsequent transverse strand goes from the lower side of the other intermediate pulley to the lower side of the other end pulley.
  • pulleys A1 and A2 will rotate in the same direction and at the same speed under the identical action of the two winches T1, T2. By cons, they will remain solicited in the opposite direction in case of displacement of the load on the support.
  • the link is wound only about a quarter of a turn on each of the two pulleys A1, B1 of the single cable circuit of which a single pulley creates the adhesion cable / pulley to neutralize the off-center load.
  • This last assembly also offers a greater choice of modes of joining because it places on each Ax axis four pulleys instead of three.
  • the solidarisations between coaxial pulleys are represented by thick lines as on the figure 15 .
  • the execution mode of the figure 19 corresponds to that of the figure 18 except for the solidarity and the method of execution of the figure 21 corresponding to that of the figure 20 except the joining.
  • the present invention encompasses any one-off separation system of solidified coaxial pulleys.
  • Such a decoupling device is represented on the Figures 23A and 23B which each represent the pulleys A1, A2 and A3 mounted on the axis Ax of left of the figure 15 .
  • the left axis Ax turns in two bearings R, R mounted in a cage CA attached to the support S below of it.
  • the pulley A1 belonging to the single cable circuit C2 is fixed by a key CL to the axis Ax to rotate therewith.
  • Each of the other pulleys A2 and A3 belonging to the cable circuit C1 is mounted by a bearing R2, respectively R3 on the axis Ax.
  • the pulley A2 is secured to the pulley A1 by a locking screw V clamped on the axis Ax so that the pulley A2 is integral with the axis Ax and therefore the pulley A1 keyed on the axis Ax.
  • This locking screw V also serves as a means of separation because it allows, after loosening and disengagement of the axis Ax free rotation of the pulley A2 on the axis Ax.
  • the figure 24A shows the joining of the pulleys A0, A1 and A2 on the left axle Ax of the execution mode of the figure 19 with two circuits of chained cables C1 and C2.
  • the pulleys A0 and A1 belonging to the cable C2 are secured by the use of a double pulley and the pulley A2 is secured by the locking screw V to the axis Ax and thus to the double pulley A0-A1.
  • the screw V is loosened and disengaged from the axis Ax (see figure 24B )
  • the present invention also includes the integration, in the suspension system, of a fall arrest device system which engages the coordinated end axis, to block it in case of acceleration. its rotational movement beyond a given degree of acceleration and / or speed of rotation, in particular as a result of breaking one of the two links.
  • the figure 25A shows a mode of execution of the figure 19 with such a fall arrest device DA provided for each of the two axes Ax end.
  • Each fall arrest device DA is supported by the associated cage CA type A and B type pulleys and each of these fall arrest devices DA comprises a fixed housing BT and a disc D keyed on the associated axis Ax for rotation therewith.
  • the disk D is provided on its circumference with several notches E and a ball or a roll BI is received in each notch E.
  • the figure 25B shows a top view of the device system of the figure 25A with a fall arrest device DA fixed to the cage CA at the end of the axis Ax on the side of the two separate pulleys A2, A3 respectively B0, B1.
  • the Figures 24A and 24B also show the fall arrest device DA mounted on a support plate PL welded to the cage CA.
  • the two considered strands pass at the upper end of their vertical path around a pulley 12, 13, and then follow a horizontal path towards each other to another pulley 14, 15 giving them again parallel directions close to each other to allow their winding or simultaneous unwinding on two rotary winding or driving members of the same winch 16.
  • the figure 26 represents an example of such an assembly with the preferred version of dual haul.
  • This assembly can itself be integrated in a carriage operated remotely to allow the translation of the support in addition to its vertical movement. Likewise, this assembly can be provided with anti-fall or anti-roll safety devices known on conventional mounting types.
  • the system described above can work with straps instead of cables, and with pulleys whose grooves have the appropriate profile. It can also work with chains in place of cables and sprockets instead of pulleys.
  • the support may take the form of a nacelle or a construction platform, on which the cables, or equivalent links, are guided to the upper part of end stirrups by suitable devices. It can also be used for the vertical maneuver of a spreader, or any other load carrier having the configuration suitable for the application of the invention.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Abstract

The system has two cable circuits, each having a cable (C1,C2) connected between an end of a fixed point (PF1, PF2) and an end of a lifting apparatus (T1,T2) by deflecting pulleys (A1-A3, B1-B3) mounted on two parallel axes of each end of a load support. One of the pulleys turns in a same direction as that of a pulley of another cable circuit by similar actions of lifting or lowering of the lifting apparatus.

Description

L'invention concerne un système pour la suspension et le levage d'un support de charge, suivant le préambule de la première revendication.The invention relates to a system for suspending and lifting a load carrier, according to the preamble of the first claim.

On connaît un type de dispositif pour la suspension et le levage d'un support de charge, tel qu'une nacelle de travail, suivant lequel ce support est suspendu au moyen de quatre brins de suspension constitués au total par au moins deux liens seulement, tels que des câbles, suspendus chacun à un point fixe du côté de l'une des extrémités du support de charge, et passant par des supports circulaires de renvoi rotatifs tels que des poulies situées aux deux extrémités du support de charge, pour se relier chacun à un moyen de levage tel qu'un treuil placé au dessus de l'autre extrémité du support de charge. Ces supports circulaires sont aménagés pour être en rotation solidaire avec les liens qu'ils supportent. Ils peuvent être situés non aux extrémités du support de charge mais seulement vers ses extrémités à égale distance du centre de ce support, sans que cela change le processus d'obtention du résultat poursuivi. En général, on préconise que les brins de suspension d'un tel dispositif soient disposées verticalement, mais celui-ci peut s'appliquer aussi à des brins de suspension obliques. Accessoirement, on peut préciser que le centre de gravité (G) du support de charge soit placé en dessous des brins transversaux des câbles joignant les poulies, de façon à assurer la stabilité transversale du support. Ce système a l'avantage de ne nécessiter que deux moyens de levage pour quatre brins de suspension. La figure 1 donne une illustration schématique d'un tel dispositif.A type of device is known for suspending and lifting a load carrier, such as a work platform, according to which this support is suspended by means of four suspension strings constituted in total by at least two links only, such as cables, each suspended at a fixed point on the side of one of the ends of the load support, and passing through circular rotary return carriers such as pulleys at both ends of the load support, to connect each to a lifting means such as a winch placed above the other end of the load support. These circular supports are arranged to rotate in solidarity with the links they support. They may be located not at the ends of the load support but only towards its ends equidistant from the center of this support, without this changing the process of obtaining the result pursued. In general, it is recommended that the suspension strands of such a device are arranged vertically, but it can also be applied to oblique suspension strands. Incidentally, it can be specified that the center of gravity (G) of the load support is placed below the transverse strands of the cables joining the pulleys, so as to ensure the transverse stability of the support. This system has the advantage of requiring only two lifting means for four suspension strands. The figure 1 gives a schematic illustration of such a device.

Le dispositif tel que décrit ci-dessus a l'inconvénient de présenter un support de charge penchant longitudinalement du côté de la charge par roulement des poulies sur le câble lorsque cette charge se déplace hors de l'axe de gravité Ag du support vers l'une des extrémités de suspension. Par exemple, dès qu'un utilisateur, situé sur un tel support constitué par une nacelle, initialement horizontale, quitte le centre de celle-ci pour aller vers l'une ou l'autre de ses extrémités, la nacelle penche du même côté. La pente s'accentue jusqu'à ce que le plancher de la nacelle s'approche d'une position alignée avec le brin de suspension du câble situé du côté opposé à celui du déplacement de la charge, ainsi que représenté par la figure 2. En pratique, dans le cas où le support de charge est une nacelle, ce mouvement est limité, sans être supprimé, par le guidage des brins de suspension, au moyen d'extensions verticales de la nacelle telles que des étriers. Un tel mouvement ainsi limité est montré par la figure 3.The device as described above has the disadvantage of having a load support leaning longitudinally on the side of the rolling load of the pulleys on the cable. when this load moves out of the gravity axis Ag of the support to one of the suspension ends. For example, as soon as a user, located on such a support consisting of a nacelle, initially horizontal, leaves the center thereof to go to one or the other of its ends, the nacelle leans on the same side. The slope increases until the floor of the nacelle approaches a position aligned with the suspension strand of the cable located on the side opposite to that of the displacement of the load, as represented by the figure 2 . In practice, in the case where the load support is a nacelle, this movement is limited, without being removed, by guiding the suspension strands, by means of vertical extensions of the nacelle such as stirrups. Such a limited movement is shown by the figure 3 .

Les indications qui vont suivre se réfèrent plus particulièrement à un support de charge constitué par une nacelle, décrite successivement avec un puis deux liens constitués chacun par un câble passant sur des poulies et actionné par un treuil de type à enroulement, mais l'invention s'applique aussi à tous moyens de levage et à tous supports de charge de montage équivalent, par exemple ceux dans lesquels les liens seraient des chaînes, les supports circulaires de câble seraient des pignons de chaînes et / ou le support de charge serait un palonnier, ces modes de réalisation n'étant pas limitatifs. De même, les indications ci-dessous s'appliquent à un système tel que décrit dans lequel l'un au moins des deux liens passerait sur plus de deux poulies sur chaque axe d'extrémité, en effectuant des retours supplémentaires entre les deux extrémités du support. Elles s'appliquent également au cas où le système comporterait plus de deux liens. Les indications ci-dessous se réfèrent plus particulièrement au cas de brins de suspension, verticaux mais l'invention peut s'appliquer au cas de brins de suspension obliques si des raisons particulières justifient cette disposition.La seule exigence propre au montage par poulies et câbles ou sangles est que le coefficient d'adhérence entre poulies et câbles ou sangles soit tel que, compte tenu du poids du support et de sa charge, la coopération entre poulies et câbles ou sangles s'effectue sans glissement des câbles ou sangles dans les gorges des poulies.The following indications refer more particularly to a load carrier constituted by a nacelle, successively described with one and then two links each consisting of a cable passing over pulleys and actuated by a winding-type winch, but the invention also applies to all lifting devices and to all equivalent mounting load carriers, for example those in which the links are chains, the circular cable supports would be chain sprockets and / or the load support would be a spreader, these embodiments are not limiting. Similarly, the indications below apply to a system as described in which at least one of the two links would pass over two pulleys on each end axis, making additional returns between the two ends of the support. They also apply in case the system has more than two links. The indications below refer more particularly to the case of suspension strands, vertical but the invention can be applied to the case of oblique suspension strands if special reasons justify this provision. The only specific requirement for assembly by pulleys and cables or straps is that the coefficient of adhesion between pulleys and cables or straps is such that, given the weight of the support and its load, the cooperation between pulleys and cables or straps is performed without slipping cables or straps in the grooves pulleys.

Un système pour la suspension et le levage d'un support de charge selon le préambule de la revendication indépendante est décrit dans la demande de brevet allemand DE-A-40 05 194 . Ce système connu sert à éviter l'oscillation d'un support de charge suspendu par des câbles sous un chariot mobile en direction horizontale. Deux systèmes de levage sont prévus comportant chacun un tambour d'enroulement de câbles à chaque extrémité du chariot. Le support de charge est suspendu par quatre câbles passant par quatre paires de poulies tournant autour d'axes parallèles aux axes des tambours, une paire étant située à chaque coin de support de charge. Quatre autres câbles de suspension sont aussi attachés aux tambours et passent par des poulies prévues sur le support de charge mais tournent autour d'axes orientés sous un angle de 90° par rapport à l'axe de rotation des tambours et des quatre paires de poulies précitées.A system for suspending and lifting a load carrier according to the preamble of the independent claim is described in the application for German Patent DE-A-40 05 194 . This known system serves to prevent the oscillation of a load support suspended by cables under a mobile carriage in the horizontal direction. Two lifting systems are provided each having a cable winding drum at each end of the carriage. The load support is suspended by four cables passing through four pairs of pulleys rotating about axes parallel to the axes of the drums, a pair being located at each load bearing corner. Four other suspension cables are also attached to the drums and pass through pulleys provided on the load support but rotate about axes oriented at an angle of 90 ° to the axis of rotation of the drums and the four pairs of pulleys. above.

Le problème de l'invention est de réaliser par des moyens simples un système du type précité, présentant l'avantage de maintenir le support de charge dans une position stable et inchangée lorsque le point d'application de la charge n'est pas ou n'est plus placé au centre du support, c'est-à-dire à égale distance des pointe de suspension du système.The problem of the invention is to achieve by simple means a system of the aforementioned type, having the advantage of maintaining the load support in a stable and unchanged position when the point of application of the load is not n 'is more placed in the center of the support, that is to say at equal distance from the suspension points of the system.

Suivant la revendication indépendante, ce problème est résolu par un système pour la suspension et le levage d'un support de charge, appliqué vers deux extrémités opposées de ce support, le support étant suspendu par au moins quatre brins de suspension constitués par au moins deux liens, dont chacun est suspendu vers l'une de ces extrémités à un point fixe et vers l'autre extrémité à l'organe d'entraînement d'un appareil de levage, en passant par des supports circulaires de renvoi, en rotation solidaire avec ces liens, sur des axes parallèles fixés respectivement vers chaque extrémité du support de charge ; chaque lien étant relié à son moyen de levage du côté de l'extrémité du support de charge opposée à celle du côté de laquelle l'autre lien est relié à l'autre moyen de levage; caractérisé en ce qu'au moins un des liens est mouflé et passe successivement sur au moins deux supports circulaires intermédiaires supplémentaires situés vers chaque extrémité, suivant un cheminement croisé tel que, sur au moins l'un des axes d'extrémité, au moins un support circulaire intermédiaire dudit lien précité tourne dans le même sens qu'au moins un support circulaire coaxial de l'autre lien sous l'action identique des deux moyens de levage s'appliquant aux liens, tandis que ces deux supports circulaires coaxiaux sont sollicités respectivement par un couple de même intensité et de sens opposés lorsque leur axe commun est sollicité par une même force vers le bas ou vers le haut, non liée à l'action des moyens de levage ; et en ce que ces deux supports circulaires coaxiaux ont le même diamètre primitif et sont solidarisés en rotation de sorte qu'une rotation en sens opposés de ces deux supports coaxiaux sous l'effet de ladite force est empêchée sans que l'action des moyens de levage sur les deux supports circulaires coaxiaux, par l'intermédiaire des liens, ne soit entravée.According to the independent claim, this problem is solved by a system for suspending and lifting a load carrier, applied to two opposite ends of this support, the support being suspended by at least four suspension strands consisting of at least two links, each of which is suspended towards one of these ends at a fixed point and towards the other end to the driving member of a hoisting apparatus, passing through circular return supports, rotatably secured with these links, on parallel axes respectively fixed to each end of the load support; each link being connected to its lifting means on the side of the end of the load support opposite to that on the side of which the other link is connected to the other lifting means; characterized in that at least one of the links is bent and passes successively on at least two additional intermediate circular supports located towards each end, following a cross path such that, on at least one of the end axes, at least one intermediate circular support of said link rotates in the same direction as at least one coaxial circular support of the other link under the identical action of the two lifting means applying to the links, while these two coaxial circular supports are respectively solicited by a pair of the same intensity and opposite directions when their common axis is urged by the same force downwards or upwards, unrelated to the action of the lifting means; and in that these two coaxial circular supports have the same pitch diameter and are rotationally fixed so that rotation in opposite directions of these two coaxial supports under the effect of said force is prevented without the action of the means of lifting on the two coaxial circular supports, through the links, is hindered.

Par conséquent, dans le cas d'une nacelle, si le plancher de la nacelle, qui constitue le support de la charge, est initialement placé dans une position horizontale, le dispositif selon l'invention le maintient dans cette position lorsque la ou les personnes situées dans dette nacelle se déplacent d'une extrémité à l'autre de celle-ci. L'invention permet de concilier l'obtention de ce résultat avec la manoeuvre du support, notamment de la nacelle, en montée et descente.Therefore, in the case of a nacelle, if the platform of the nacelle, which is the support of the load, is initially placed in a horizontal position, the device according to the invention keeps it in this position when the person or persons located in platform debt move from one end to another of the latter. The invention makes it possible to reconcile the obtaining of this result with the maneuvering of the support, in particular of the nacelle, in ascent and descent.

Selon la revendication dépendante 2, l'autre lien est aussi mouflé et passe successivement sur au moins deux supports circulaires intermédiaires supplémentaires situés vers chaque extrémité, suivant un cheminement croisé tel que, sur l'autre des axes d'extrémité, au moins un support circulaire intermédiaire de l'autre lien précité tourne dans le même sens qu'au moins un support circulaire coaxial du premier lien sous l'action identique des deux moyens de levage s'appliquant aux liens, tandis que ces deux supports circulaires coaxiaux sont sollicités respectivement par un couple de même intensifié et de sens opposés lorsque leur axe commun est sollicité par une même force vers le bas ou vers le haut, non liée à l'action des moyens de levage, et en ce que ces deux supports circulaires coaxiaux ont le même diamètre primitif et sont solidarisés en rotation de sorte qu'une rotation en sens inverse de ces deux supports coaxiaux sous l'effet de ladite force est empêchée sans que l'action des moyens de levage sur les supports circulaires coaxiaux, par l'intermédiaire des liens, ne soit entravée.According to the dependent claim 2, the other link is also bent and passes successively on at least two additional intermediate circular supports located towards each end, according to a crossed path such that, on the other of the end axes, at least one support intermediate circular of the other aforementioned link rotates in the same direction as at least one coaxial circular support of the first link under the identical action of the two lifting means applying to the links, while these two coaxial circular supports are respectively solicited by a pair of the same intensified and opposite directions when their common axis is urged by the same force downwards or upwards, not related to the action of the lifting means, and in that these two coaxial circular supports have the same pitch diameter and are secured in rotation so that a rotation in the opposite direction of these two coaxial supports under the effect of said force is prevented without the action of the lifting means on the coaxial circular supports, through the links, is hindered.

D'autres caractéristiques avantageuses sont définies dans les revendications dépendantes 3 à 10.Other advantageous features are defined in the dependent claims 3 to 10.

Le système pour la suspension et le levage d'un support de charge sera maintenant expliqué en plus grand détail par rapport aux figures annexées, sur lesquelles :

  • Les figures 1 à 3 représentent un système pour la suspension et le levage d'un support de charge selon la technique antérieure ;
  • Les figures 4 à 10 représentent un schéma élémentaire d'un système pour la suspension et le levage d'un support de charge ;
  • La figure 11 représente un système à deux câbles correspondant à la figure 1 ;
  • La figure 12 représente un système a deux câbles dont les treuils se trouvent au-dessus des côtés opposés du support ;
  • La figure 13 représente un système à deux câbles dont les treuils se trouvent sur le même côté du support, et dont un câble est mouflé sans croisement du mouflage ;
  • La figure 14 représente un système à deux câbles dont les treuils se trouvent au-dessus des mêmes côtés du support, et dont un câble est mouflé avec croisement du mouflage ;
  • La figure 15 représente un système selon un premier mode d'exécution de l'invention, c'est-à-dire un système à deux câbles dont les treuils se trouvent sur les côtés opposés du support, et dont un circuit de câble est mouflé avec croisement du mouflage, et avec deux poulies appartenant à un circuit de câble différent, mais tournant dans le même sens sous l'action identique des deux treuils et sollicitées en sens inverse en cas de déplacement de la charge sur le support, solidarisées l'une de l'autre ;
  • La figure 16 représente un système selon l'invention dont deux les circuits de câble sont mouflés ;
  • Les figures 17 à 22 représentent différents modes d'exécution de l'invention, selon lesquels les deux circuits de câble sont mouflés, et qui se distinguent par la solidarisation de différentes poulies ;
  • Les figures 23A et 23B représentent en coupe les trois poulies montées sur l'axe commun de gauche du mode d'exécution de la figure 15, la poulie intermédiaire appartenant au circuit de câble mouflé étant solidarisée à la poulie appartenant au circuit de câble simple dans la figure 23A et ces deux poulies étant désolidarisées dans la figure 23B ; et
  • Les figures 24A et 24B représentent en coupe les quatre poulies montées sur l'axe commun de gauche du mode d'exécution de la figure 19, la poulie intermédiaire appartenant au premier système de câble mouflé étant solidarisée à la poulie double appartenant à l'autre système de câble mouflé, dans la figure 24A et ces poulies étant désolidarisées dans la figure 24B, et avec un dispositif antichute pour chaque axe d'extrémité ;
  • Les figures 25A et 25B montrent le système de la figure 19 avec un système antichute pour chacun des deux axes ; et
  • La figure 26 représente un système d'exécution préféré avec les tambours des deux treuils calés sur l'axe d'un même moteur.
The system for suspending and lifting a load carrier will now be explained in greater detail with respect to the accompanying figures, in which:
  • The Figures 1 to 3 represent a system for suspending and lifting a load carrier according to the prior art;
  • The Figures 4 to 10 represent a schematic diagram of a system for the suspension and lifting of a load support;
  • The figure 11 represents a two-wire system corresponding to the figure 1 ;
  • The figure 12 represents a two-wire system whose winches are located on opposite sides of the support;
  • The figure 13 represents a two-cable system with winches on the same side of the support and a cable that is slid without crossing the hawser;
  • The figure 14 represents a two-wire system with winches located above the same sides of the support, and a cable of which is slanted with a crossing of the halyard;
  • The figure 15 represents a system according to a first embodiment of the invention, that is to say a two-cable system whose winches are on the opposite sides of the support, and a cable circuit is bent with crossing the haulage, and with two pulleys belonging to a different cable circuit, but rotating in the same direction under the identical action of the two winches and urged in the opposite direction in the event of displacement of the load on the support, secured to one of the other;
  • The figure 16 represents a system according to the invention, two of which are the cable circuits are bent;
  • The Figures 17 to 22 represent different embodiments of the invention, according to which the two cable circuits are molded, and which are distinguished by the joining of different pulleys;
  • The Figures 23A and 23B represent in section the three pulleys mounted on the common left axis of the execution mode of the figure 15 , the intermediate pulley belonging to the cable circuit being secured to the pulley belonging to the single cable circuit in the Figure 23A and these two pulleys being disconnected in the Figure 23B ; and
  • The Figures 24A and 24B represent in section the four pulleys mounted on the common left axis of the execution mode of the figure 19 , the intermediate pulley belonging to the first cable system being secured to the double pulley belonging to the other cable system, in the figure 24A and these pulleys being disassociated in the figure 24B , and with a fall arrest device for each end axis;
  • The Figures 25A and 25B show the system of the figure 19 with a fall arrest system for each of the two axes; and
  • The figure 26 represents a preferred execution system with the drums of the two winches wedged on the axis of the same engine.

Afin de faciliter la compréhension de l'invention et de ses caractéristiques de nouveauté, on rappellera les propriétés du système le plus simple de suspension et de levage avant mise en oeuvre de l'invention, constitué par un seul câble de suspension actionné par un seul treuil. On montrera ensuite comment l'invention permet, par le doublement du câble de levage, d'obtenir le résultat visé.In order to facilitate understanding of the invention and its novelty characteristics, the properties of the simplest system of suspension and lifting before implementation of the invention, constituted by a single suspension cable actuated by a single member, will be recalled. winch. It will then be shown how the invention makes it possible, by doubling the hoisting cable, to obtain the desired result.

On appellera « A » les poulies situées sur l'axe de gauche et « B » les poulies situées sur l'axe de droite.The pulleys on the left axis are called "A" and the pulleys on the right axis are called "B".

On raisonnera sur l'exemple d'un câble, le raisonnement d'un câble étant applicable à tout lien susceptible de coopérer avec un support circulaire.One will reason on the example of a cable, the reasoning of a cable being applicable to any link likely to cooperate with a circular support.

I/ Description d'un schéma élémentaire de système de suspension et levageI / Description of a basic scheme of suspension and lifting system

La figure 4 représente un système de suspension et de levage de charge connu comprenant d'une part un support ou nacelle S, qu'on peut schématiser en plan par un châssis rectangulaire, comportant, d'une part à chaque extrémité considérée dans le sens longitudinal, un axe transversal Ax, les deux axes Ax étant parallèles horizontaux, et porteurs chacun d'une poulie A, B, et d'autre part un câble C pour la suspension du support S, ledit câble C étant fixé en un point supérieur Pf situé verticalement au dessus d'une extrémité du support S, passant par les deux poulies A, B de celui-ci et s'enroulant ensuite à un treuil T fixé en un point situé verticalement au dessus de l'autre extrémité du support S.The figure 4 represents a known load suspension and lifting system comprising on the one hand a support or nacelle S, which can be schematized in plan by a rectangular frame, comprising, on the one hand at each end considered in the longitudinal direction, a transverse axis Ax, the two axes Ax being parallel horizontal, and each carrying a pulley A, B, and secondly a cable C for the suspension of the support S, said cable C being fixed at a higher point Pf located vertically above one end of the support S, passing through the two pulleys A, B thereof and then winding to a winch T fixed at a point located vertically above the other end of the support S.

La figure 4 montre un schéma de support S en élévation, et la figure 5 le schéma correspondant en plan. Ces schémas peuvent s'appliquer à d'autres structures qu'une nacelle, par exemple à un palonnier.The figure 4 shows a support diagram S in elevation, and the figure 5 the corresponding diagram in plan. These diagrams can be applied to other structures than a nacelle, for example a rudder.

Dans la suite des explications concernant la présente invention, on ne représentera que les câbles et les poulies afin de simplifier les schémas. Il est entendu que les axes des poulies supportant les câbles de suspension sont intégrés au support pour assurer la suspension et le mouvement vertical de celui-ci. Ainsi, la figure ci-dessus 4 sera représentée suivant la figure 6.In the following explanations concerning the present invention, only the cables and pulleys will be represented in order to simplify the drawings. It is understood that the axes of the pulleys supporting the suspension cables are integrated in the support to ensure the suspension and the vertical movement thereof. Thus, the figure above 4 will be represented according to the figure 6 .

Dans la suite des explications concernant le sens de rotation d'une poulie, on considérera toujours celle-ci dans un mouvement de descente de son axe.In the following explanation of the direction of rotation of a pulley, we will always consider it in a downward movement of its axis.

Deux cas de mouvement de chaque poulie sont à considérer.

  1. a) On peut considérer un tel système en position statique horizontale d'équilibre lorsque la charge appliquée au support S, se répartit à égalité à chaque extrémité dudit support, étant entendu que le poids mort du support est également réparti. Dans ce cas, si le treuil T, situé par exemple du côté gauche du support S, déroule le câble C, le support S descendant en gardant sa position horizontale, les deux poulies A, B, entraînées par le mouvement du câble C, vont pivoter dans le même sens, c'est-à-dire toutes deux dans le sens inverse des aiguilles d'une montre (SIA). Si le treuil T avait été situé du côté opposé, c'est-à-dire du côté droit, les deux poulies A, B, pour le même mouvement de descente du support S, auraient tourné en sens inverse, c'est-à-dire toutes deux dans le sens des aiguilles d'une montre (SDA). Cette comparaison est illustrée par la figure 7 dans le cas où le treuil T est situé du côté de l'extrémité gauche du support S, et par la figure 8 dans le cas où le treuil T est situé du côté de l'extrémité droite.
    Sur les figures 7 et 8, et sur les figures suivantes on indique pour chaque poulie son sens de rotation par une flèche pleine pour le cas de mouvement ci-dessus.
  2. b) Si maintenant, le treuil T étant à l'arrêt, la charge, initialement équilibrée, se déplace vers l'extrémité gauche du support S, cette extrémité sera soumise à une force vers le bas, et le support penchera de son côté, ce qui fera déplacer en roulement les deux poulies A et B sur le câble C immobile, de sorte que la poulie de gauche A soumise à cette force va descendre. De son côté, la poulie B située à droite va monter, puisque la longueur totale de câble C restant fixe ainsi que celle du brin reliant les deux poulies A et B, le brin vertical de droite doit se raccourcir.
    Dans son mouvement de descente, la poulie de gauche A va, en roulant sur le câble C immobile, tourner dans le sens SDA, c'est-à-dire dans le sens inverse de celui SIA où elle tournait sous l'action de descente du treuil T situé au dessus d'elle. On a figuré sur la figure 9 un stade de ce mouvement en cours pour une charge décalée vers la gauche sur la figure. Par contre, si, précédemment, dans le cas ci-dessus b), cette même poulie de gauche avait été située sous le point fixe de suspension Pf, le treuil ayant été situé de l'autre côté du support S, cette poulie A, dans son mouvement de roulement vers le bas, se déplacerait sous l'effet du déplacement de la charge dans le même sens que précédemment (SDA) sous l'action de descente du treuil T, comme montré sur la figure 10. En effet, dans le phénomène considéré, le côté où est situé le treuil n'importe plus, puisque le treuil T est immobile et se comporte comme le point fixe opposé.
    Sur les figures 9 et 10 et sur les figures suivantes on indique pour chaque poulie son sens de rotation par une flèche en pointillé pour le cas de mouvement ci-dessus.
    Les sens de rotation, dans ce cas, sont naturellement identiques quel que soit le côté où se trouve le treuil T, alors qu'ils se trouvaient inversés par changement de côté du treuil, lorsque le mouvement des poulies était provoqué par celui du treuil.
  3. c) On peut donc en conclure qu'il y a deux cas de mouvement possibles du système :
    1. 1/ Un cas dans lequel le mouvement est engendré par le treuil T, le câble C entraînant par son mouvement la rotation des poulies A et B (flèches pleines),
    2. 2/ l'autre cas dans lequel, le treuil étant à l'arrêt, le mouvement est engendré par le roulement des poulies A et B sur le câble C immobile lorsque la charge se porte à l'une des extrémités du support (flèches en pointillé).
Two cases of movement of each pulley are to be considered.
  1. a) Such a system can be considered in a static horizontal equilibrium position when the load applied to the support S is distributed equally at each end of said support, it being understood that the dead weight of the support is equally distributed. In this case, if the winch T, located for example on the left side of the support S, unwinds the cable C, the support S descending while keeping its horizontal position, the two pulleys A, B, driven by the movement of the cable C, go rotate in the same direction, ie both counterclockwise (SIA). If the winch T had been located on the opposite side, that is to say on the right side, the two pulleys A, B, for the same movement of descent of the support S, would have turned in the opposite direction, that is to say both say clockwise (SDA). This comparison is illustrated by the figure 7 in the case where the winch T is located on the side of the left end of the support S, and by the figure 8 in the case where the winch T is located on the side of the right end.
    On the Figures 7 and 8 , and in the following figures is indicated for each pulley direction of rotation by a full arrow for the case of movement above.
  2. b) If, now the winch T is stopped, the load, initially balanced, moves towards the left end of the support S, this end will be subjected to a force downwards, and the support will lean on its side, which will roll the two pulleys A and B on the motionless cable C, so that the pulley left A subjected to this force will descend. For its part, the pulley B on the right will go up, since the total length of cable C remaining fixed and that of the strand connecting the two pulleys A and B, the right vertical strand must be shortened.
    In its downward movement, the left pulley A goes, while traveling on the motionless cable C, to turn in the direction SDA, that is to say in the opposite direction to that SIA where it turned under the descent action winch T located above her. We figured on the figure 9 a stage of this movement in progress for a load shifted to the left in the figure. On the other hand, if, previously, in the case above b), this same left pulley had been located under the fixed point of suspension Pf, the winch having been located on the other side of the support S, this pulley A, in its rolling downward movement, would move under the effect of the displacement of the load in the same direction as before (SDA) under the action of descent of the winch T, as shown on the figure 10 . In fact, in the phenomenon under consideration, the side where the winch is located no longer matters, since the winch T is immobile and behaves like the opposite fixed point.
    On the Figures 9 and 10 and in the following figures is indicated for each pulley direction of rotation by a dotted arrow for the case of movement above.
    The directions of rotation, in this case, are naturally identical whatever the side where the winch T is, whereas they were reversed by change of side of the winch, when the movement of the pulleys was caused by that of the winch.
  3. c) It can therefore be concluded that there are two possible cases of movement of the system:
    1. 1 / A case in which the movement is generated by the winch T, the cable C driving by its movement the rotation of the pulleys A and B (solid arrows),
    2. 2 / the other case in which, the winch being stopped, the movement is generated by the rolling of the pulleys A and B on the cable C immobile when the load is carried to one of the ends of the support (arrows in dotted).

Dans le deuxième cas, le sens de rotation d'une poulie A ou B, pour un mouvement vertical de même sens que dans le premier cas, sera le même que dans ce premier cas pour la poulie située du côté du point fixe de suspension, et sera inverse pour la poulie située du côté du treuil.In the second case, the direction of rotation of a pulley A or B, for a vertical movement in the same direction as in the first case, will be the same as in this first case for the pulley located on the side of the fixed point of suspension, and will be the opposite for the pulley located on the side of the winch.

Naturellement, les deux cas de mouvement peuvent se trouver combinés simultanément, la charge se déplaçant sur le support pendant que le treuil T la fait monter ou descendre.Naturally, the two cases of movement can be combined simultaneously, the load moving on the support while the winch T up or down.

II/ Système développé par doublement du câbleII / System developed by doubling the cable

On peut vouloir monter le système avec deux câbles C1, C2 au lieu d'un seul. Cela permet d'actionner quatre brins de suspension par deux treuils T1, T2 seulement, et, ainsi, de doubler la sécurité.You may want to mount the system with two cables C1, C2 instead of one. This makes it possible to operate four suspension strands with two winches T1, T2 only, and thus to double the safety.

Si ces câbles sont montés de façon identique, le résultat sera le même que précédemment. La figure 11 illustre ce montage, doublant celui de la figure 8.If these cables are mounted identically, the result will be the same as before. The figure 11 illustrates this montage, doubling that of the figure 8 .

Si le treuil T2 du deuxième câble C2 est placé du côté opposé à celui du premier treuil T1, le mouvement du support S sera encore le même dans les deux cas de fonctionnement ci-dessus, mais le sens de rotation de chaque poulie A', B' du deuxième câble C2 sera, dans le cas de déplacement vertical par les treuils T1, T2, inverse par rapport au sens de rotation de la poulie A ou B située en position correspondante sur le premier câble C1, pour un même sens de déplacement vertical que dans le montage précédent. Autrement dit, les poulies coaxiales A, A' et B, B' (chacune appartenant à un câble différent) tourneront en sens inverse l'une de l'autre. Dans ce cas, les poulies coaxiales A, A' et B, B' doivent être montées libres sur leur axe Ax. La figure 12 illustre ce montage.If the winch T2 of the second cable C2 is placed on the side opposite to that of the first winch T1, the movement of the support S will still be the same in the two above operating cases, but the direction of rotation of each pulley A ', B 'of the second cable C2 will, in the case of vertical movement by the winches T1, T2, reverse relative to the direction of rotation of the pulley A or B located in the corresponding position on the first cable C1, for the same direction of movement vertical than in the previous assembly. In other words, the coaxial pulleys A, A 'and B, B' (each belonging to a different cable) will rotate in the opposite direction from each other. In this case, the coaxial pulleys A, A ' and B, B 'must be mounted free on their axis Ax. The figure 12 illustrates this montage.

Dans tous les cas, les treuils doivent naturellement enrouler et dérouler le câble suivant une vitesse linéaire identique pour obtenir un mouvement vertical convenable du support.In any case, the winches must naturally wind and unwind the cable at an identical linear speed to obtain a proper vertical movement of the support.

III/ Système développé par mouflage de l'un des deux câblesIII / System developed by hauling one of the two cables

Le but de l'invention est de stabiliser la position du support en cas de déplacement de sa charge tout en permettant à ses deux câbles de monter ou descendre en même temps sous l'action de leurs treuils respectifs.The object of the invention is to stabilize the position of the support in case of displacement of its load while allowing its two cables to go up or down at the same time under the action of their respective winches.

A cette fin, et comme représenté sur la figure 15, on moufle au moins l'un des deux câbles, en le faisant passer sur au moins deux poulies A2, A3 et B2, B3 sur chaque axe Ax d'extrémité du support, soit sur au moins quatre poulies, de façon à obtenir un circuit de câble tel que, sur un même axe Ax on obtienne qu'une poulie appartenant au circuit mouflé tourne dans le même sens que la poulie coaxiale A1, B1 du circuit non mouflé sous l'action identique des deux treuils (descente ou montée) et soient sollicitée, par une charge décentrée, dans un sens de rotation inverse de celui de la poulie du circuit non mouflé, dans un mouvement de roulement sur les câbles immobiles. Le résultat de l'invention est alors obtenu en solidarisant ces deux poulies.For this purpose, and as shown on the figure 15 at least one of the two cables is mittled, by passing it over at least two pulleys A2, A3 and B2, B3 on each axis Ax end of the support, or on at least four pulleys, so as to obtain a a cable circuit such that, on the same axle Ax, it is possible for a pulley belonging to the circuit to be rotated in the same direction as the coaxial pulley A1, B1 of the non-inflated circuit under the identical action of the two winches (lowering or climbing) and are biased, by an eccentric load, in a direction of rotation opposite to that of the pulley of the immersed circuit, in a rolling motion on the stationary cables. The result of the invention is then obtained by joining these two pulleys.

On appellera « poulies d'extrémité » les poulies A1, A3, B1, B3 situées à l'extrémité inférieure des brins verticaux, et « poulies intermédiaires » les autres poulies A2, B2, c'est-à-dire celles qui sont reliées par des brins transversaux, chacune uniquement à une autre poulie.The pulleys A1, A3, B1, B3 located at the lower end of the vertical strands and the "intermediate pulleys", the other pulleys A2, B2, that is to say those which are connected, will be referred to as "end pulleys". by transverse strands, each only to another pulley.

On appellera A1 la poulie de gauche (en suspension directe) du câble simple, A2, la poulie intermédiaire de gauche du câble mouflé et A3, la poulie d'extrémité de gauche du câble mouflé. On donnera les numérotations correspondantes aux poulies de droite.A1 is the left pulley (in direct suspension) of the single cable, A2, the left intermediate pulley of the cable and A3, the left end pulley of the cable. The corresponding numbering will be given to the right pulleys.

On appellera « câble simple » le câble C2 non mouflé.The "uncomplicated" cable C2 will be called "single cable".

A/ Mouvement d'inclinaison sous l'effet d'une charge décentrée sur le support, les treuils restant immobiles.A / Tilt movement under the effect of an off-center load on the support, the winches remaining stationary.

On a vu que, pour ce type de mouvement, la position des treuils T1, T2 est indifférente. Supposons donc, pour présenter le schéma le plus simple, que les deux treuils T1, T2 soient placés du même côté, par exemple du côté droit, le mouflage reliant les poulies A2, A3 et B2, B3 sans croisement, suivant la figure 13. Prenons le cas de la charge se déplaçant vers la gauche.We have seen that, for this type of movement, the position of the winches T1, T2 is indifferent. Let us suppose, to present the simplest diagram, that the two winches T1, T2 are placed on the same side, for example on the right side, the haulage connecting the pulleys A2, A3 and B2, B3 without crossing, according to the figure 13 . Take the case of the load moving to the left.

On a vu que les poulies d'extrémité A1, A3 et B1, B3 situées d'un même côté (donc coaxiales et suspendues directement, que ce soit à un point fixe ou à un treuil), sont sollicitées dans le même sens de rotation par un décentrement de la charge du support. Par exemple, pour un déplacement de la charge vers la, gauche, et donc un mouvement vers le bas, les deux poulies A1 et A3 vont tourner dans le sens SDA. En croisant le mouflage indiqué sur la figure 13 entre les poulies A2 B2 et B3, suivant la figure 14, on va inverser le sens de rotation de la poulie A2 pour obtenir le sens inverse SIA. Il est mentionné que les figures 13 et 14 sont utiles pour la compréhension de l'invention, mais ne montrent pas des treuils T1 et T2 disposés, suivant l'invention, du côté des extrémités opposées du support de charge S.We have seen that the end pulleys A1, A3 and B1, B3 located on the same side (therefore coaxial and directly suspended, whether at a fixed point or a winch), are urged in the same direction of rotation by decentering the load of the support. For example, for a displacement of the load to the left, and therefore a downward movement, the two pulleys A1 and A3 will rotate in the direction SDA. By crossing the hauling indicated on the figure 13 between pulleys A2 B2 and B3, following the figure 14 , we will reverse the direction of rotation of the pulley A2 to get the opposite direction SIA. It is mentioned that Figures 13 and 14 are useful for the understanding of the invention, but do not show winches T 1 and T 2 arranged, according to the invention, on the side of the opposite ends of the load support S.

Si on solidarisait les poulies A1 et A2, on obtiendrait donc bien le résultat de stabilisation recherché, puisque ces deux poulies, appartenant chacune à un circuit de câble différent, seraient alors sollicitées, sous l'effet d'un déplacement de la charge sur le support, par des couples égaux et inverses. A cette fin, les poulies coaxiales solidarisées doivent avoir le même diamètre primitif.If the pulleys A1 and A2 were solidaried, the desired stabilization result would thus be obtained, since these two pulleys, each belonging to a different cable circuit, would then be loaded, under the effect of a displacement of the load on the support, by equal and inverse couples. For this purpose, the solidified coaxial pulleys must have the same pitch diameter.

Le mot "croisement" signifie qu'un brin de câble transversal va d'un côté inférieur d'une poulie d'extrémité vers un côté supérieur d'une poulie intermédiaire, le brin de câble transversal suivant va du côté inférieur de la poulie intermédiaire précité vers le côté supérieur de l'autre poulie intermédiaire et le brin transversal subséquent va du côté inférieur de l'autre poulie intermédiaire vers le côté inférieur de l'autre poulie d'extrémité.The word "crossover" means that a cross-cable run goes from a lower side of an end pulley to an upper side of an intermediate pulley, the next cross-cable run goes to the lower side of the intermediate pulley. mentioned above to the upper side of the other intermediate pulley and the subsequent transverse strand goes from the lower side of the other intermediate pulley to the lower side of the other end pulley.

B/ Mouvement vertical du support sous l'action du treuil (charge centrée)B / Vertical movement of the support under the action of the winch (centric load)

En inversant le sens de rotation de la poulie A2, par croisement du mouflage, on a inversé son sens de rotation dans le cas de déplacement de la charge, par roulement sur le câble fixe C1, mais on a aussi inversé son sens de rotation sous l'action du treuil T1 de son câble C1, lequel treuil, dans l'exemple choisi, est situé du côté opposé à cette poulie (à droite sur la figure). Ce sens se trouve donc inverse de celui de la poulie A3, et donc de celui de la poulie A1, puisque les deux treuils sont situés du même côté. Il s'ensuit que si on solidarise les poulies A1 et A2, le mouvement vertical du support ne peut plus se faire.By reversing the direction of rotation of the pulley A2, by crossing the halyard, its direction of rotation was reversed in the case of displacement of the load, by rolling on the fixed cable C1, but it was also reversed its direction of rotation under the action of the winch T1 of its cable C1, which winch, in the example chosen, is located on the opposite side to this pulley (right in the figure). This meaning is therefore opposite to that of the pulley A3, and therefore that of the pulley A1, since the two winches are located on the same side. It follows that if the pulleys A1 and A2 are secured, the vertical movement of the support can no longer be done.

Afin de restituer le même sens de rotation aux poulies A1 et A2 sous l'action identique des deux treuils, on va donc faire passer l'un des deux treuils du côté opposé du support. Par exemple on va faire passer à gauche le treuil du câble simple C2. De ce fait, on va inverser le sens de rotation de la poulie A1 sous l'action de son treuil, puisqu'on a vu plus haut qu'une poulie d'extrémité tourne, sous l'action du treuil de son câble, en sens inverse, suivant qu'elle est du côté du point fixe ou du côté du treuil. Ce montage est illustré par la figure 15.In order to restore the same direction of rotation to the pulleys A1 and A2 under the identical action of the two winches, we will therefore pass one of the two winches on the opposite side of the support. For example we will pass on the left winch single cable C2. Therefore, we will reverse the direction of rotation of the pulley A1 under the action of his winch, since we have seen above that an end pulley turns, under the action of the winch of his cable, in in the opposite direction, depending on whether it is on the fixed point side or on the winch side. This montage is illustrated by the figure 15 .

Ainsi les poulies A1 et A2 tourneront dans le même sens et à la même vitesse sous l'action identique des deux treuils T1, T2. Par contre, elles resteront sollicitées en sens inverse en cas de déplacement de la charge sur le support.Thus the pulleys A1 and A2 will rotate in the same direction and at the same speed under the identical action of the two winches T1, T2. By cons, they will remain solicited in the opposite direction in case of displacement of the load on the support.

Ainsi, on peut donc les solidariser pour obtenir le résultat recherché, c'est-à-dire le blocage de toute tendance à faire pencher le support S dans le sens longitudinal, tout en maintenant une manoeuvre verticale normale du support S par ses treuils T1, T2. Cette solidarisation est figurée sur la figure 15 par un trait épais reliant le centre de la poulie A1 à celui de la poulie A2. Elle peut être réalisée soit par un blocage du moyeu de ces poulies A1, A2 sur leur axe commun, sur lequel la poulie A3 tourne librement, soit en réalisant une poulie à deux gorges.Thus, they can be secured to obtain the desired result, that is to say the blocking of any tendency to tip the support S in the longitudinal direction, while maintaining a normal vertical maneuver support S by its winches T1 , T2. This solidarity is represented on the figure 15 by a thick line connecting the center of the pulley A1 to that of the pulley A2. It can be achieved either by blocking the hub of these pulleys A1, A2 on their common axis, on which the pulley A3 rotates freely, or by producing a pulley with two grooves.

On comprend aisément que le résultat est identique, que la charge se déplace vers la gauche ou vers la droite. On comprend également aisément que le résultat est identique, quel que soit le côté duquel le treuil du câble mouflé ou du câble simple est placé, pourvu que les deux treuils soient placés de façon opposée à chaque extrémité du support. Ainsi, on aurait obtenu le même résultat en faisant passer à gauche le treuil du câble mouflé au lieu du treuil du câble simple.It is easy to understand that the result is the same whether the load moves to the left or to the right. It is also easily understood that the result is the same, regardless of which side the winch of the cable or single cable is placed, provided that the two winches are placed opposite to each end of the support. Thus, the same result would have been obtained by passing the winch of the cable on the left instead of the winch of the single cable.

IV/ Système développé par doublement du mouflageIV / System developed by doubling the hauling

On peut voir que, dans le système décrit, le lien ne s'enroule que d'environ un quart de tour sur chacune des deux poulies A1, B1 du circuit de câble simple dont une seule poulie crée l'adhérence câble / poulie pour neutraliser la charge décentrée. Spécialement, dans le cas d'un montage par câbles et poulies, on a avantage à prolonger au maximum les arcs d'enroulement des câbles sur les poulies pour améliorer l'adhérence câble / poulie dont dépend le bon fonctionnement du système.It can be seen that, in the system described, the link is wound only about a quarter of a turn on each of the two pulleys A1, B1 of the single cable circuit of which a single pulley creates the adhesion cable / pulley to neutralize the off-center load. Especially in the case of cable and pulley assembly, it is advantageous to extend the cable winding arcs on the pulleys as much as possible to improve the cable / pulley adhesion on which the system operation depends.

A cette fin, on pourra avantageusement moufler aussi les deux circuits de câble pour obtenir le montage illustré par la figure 16.To this end, it will be advantageous to also muffle the two cable circuits to obtain the assembly illustrated by the figure 16 .

Ce dernier montage offre en outre un plus grand choix de modes de solidarisation puisqu'il place sur chaque axe Ax quatre poulies au lieu de trois.This last assembly also offers a greater choice of modes of joining because it places on each Ax axis four pulleys instead of three.

Sur ce schéma et les suivants, on appellera B0 la poulie intermédiaire de droite du câble du nouveau mouflage et A0 la poulie correspondante de gauche.In this diagram and the following, we will call B0 the right intermediate pulley cable of the new haulage and A0 the corresponding pulley on the left.

Pour mieux équilibrer le fonctionnement du système aux deux extrémités de la nacelle, notamment quel que soit le sens de déplacement de la charge, on aura avantage à compléter la liaison des poulies A1 et A2 par la liaison des poulies B0 et B2 en les solidarisant sur leur axe commun, ce qui permet notamment d'augmenter considérablement l'adhérence câble / poulie. Les poulies B3 et B1 restent en rotation libre, ainsi que A0 et A3, suivant la figure 17.To better balance the operation of the system at both ends of the nacelle, particularly regardless of the direction of travel of the load, it will be advantageous to complete the connection of the pulleys A1 and A2 by the connection of the pulleys B0 and B2 by securing them on their common axis, which allows in particular to significantly increase the adhesion cable / pulley. The pulleys B3 and B1 remain in free rotation, as well as A0 and A3, according to the figure 17 .

Des cas possibles de solidarisation sont indiqués suivant les figures 18 à 22. On choisira de préférence le montage de la figure 19 par lequel, aux deux extrémités de la nacelle, on obtient jusqu'à trois poulies contiguës solidarisables pour le résultat poursuivi, à la place desquelles on peut utiliser des poulies à triple gorge.Possible cases of joining are indicated according to the Figures 18 to 22 . We will preferably choose the assembly of the figure 19 by which, at both ends of the nacelle, one obtains up to three contiguous pulleys solidarisables for the result continued, in place of which one can use triple-throated pulleys.

Sur les figures 17 à 22, les solidarisations entre poulies coaxiales sont figurées par des traits épais comme sur la figure 15. Le mode d'exécution de la figure 19 correspond à celui de la figure 18 excepté la solidarisation et le mode d'exécution de la figure 21 correspondant à celui de la figure 20 excepté la solidarisation.On the Figures 17 to 22 , the solidarisations between coaxial pulleys are represented by thick lines as on the figure 15 . The execution mode of the figure 19 corresponds to that of the figure 18 except for the solidarity and the method of execution of the figure 21 corresponding to that of the figure 20 except the joining.

V/ Dispositif de désolidarisationV / Uncoupling device

Il peut être avantageux de rendre possible une manoeuvre destinée à rétablir l'horizontalité du support de charge, si cette horizontalité a été altérée. Cette altération peut se produire, par exemple, après un certain temps de fonctionnement, dans le cas d'un lien co-opérant par adhérence avec les poulies, lorsqu'il y a eu progressivement glissement du lien dans la gorge des poulies, notamment sous l'effet d'une charge importante fréquemment décentrée du même côté. On peut aussi vouloir provoquer une inclinaison déterminée du support de charge, notamment s'il s'agit d'un palonnier. A cette fin, la présente invention englobe tout système de désolidarisation ponctuelle des poulies coaxiales solidarisées. Pour cela, on peut imaginer que les poulies coaxiales solidarisées le soient par un blocage de leur moyeu sur leur axe commun, cependant que la ou les poulies non-solidarisées tournent librement sur le même axe. Le dispositif de désolidarisation consistait alors, suivant un moyen connu, à désolidariser de leurs axes les moyeux des poulies coaxiales normalement solidarisés en rotation avec ces axes.It may be advantageous to make possible a maneuver intended to restore the horizontality of the load support, if this horizontality has been altered. This alteration can occur, for example, after a certain time of operation, in the case of a bond co-operating by adhesion with the pulleys, when there has been progressively sliding of the link in the throat of the pulleys, especially under the effect of a large load frequently off-center on the same side. One can also want to cause a specific inclination of the load support, especially if it is a lifter. To this end, the present invention encompasses any one-off separation system of solidified coaxial pulleys. For this, one can imagine that the coaxial pulleys secured by the blocking of their hub on their common axis, while the non-fixed pulleys or rotate freely on the same axis. The uncoupling device then consisted, according to a known means, of separating from their axes the hubs of the coaxial pulleys normally secured in rotation with these axes.

Un tel dispositif de désolidarisation est représenté sur les figures 23A et 23B qui représentent chacune les poulies A1, A2 et A3 montées sur l'axe Ax de gauche de la figure 15. Sur ces figures l'axe de gauche Ax tourne dans deux roulements R, R montés dans une cage CA attachée au support S en-dessous de celui-ci. La poulie A1 appartenant au circuit de câble simple C2 est fixée par une clavette CL à l'axe Ax pour tourner avec celui-ci. Chacune des autres poulies A2 et A3 appartenant au circuit de câble mouflé C1 est montée par un roulement R2, respectivement R3 sur l'axe Ax. Selon la figure 23A la poulie A2 est solidarisée à la poulie A1 par une vis de blocage V serrée sur l'axe Ax de sorte que cette poulie A2 soit solidaire de l'axe Ax et donc de la poulie A1 clavetée sur cet axe Ax. Cette vis de blocage V sert aussi de moyen de désolidarisation parce qu'elle permet, après desserrage et dégagement de l'axe Ax la rotation libre de la poulie A2 sur l'axe Ax.Such a decoupling device is represented on the Figures 23A and 23B which each represent the pulleys A1, A2 and A3 mounted on the axis Ax of left of the figure 15 . In these figures the left axis Ax turns in two bearings R, R mounted in a cage CA attached to the support S below of it. The pulley A1 belonging to the single cable circuit C2 is fixed by a key CL to the axis Ax to rotate therewith. Each of the other pulleys A2 and A3 belonging to the cable circuit C1 is mounted by a bearing R2, respectively R3 on the axis Ax. According to Figure 23A the pulley A2 is secured to the pulley A1 by a locking screw V clamped on the axis Ax so that the pulley A2 is integral with the axis Ax and therefore the pulley A1 keyed on the axis Ax. This locking screw V also serves as a means of separation because it allows, after loosening and disengagement of the axis Ax free rotation of the pulley A2 on the axis Ax.

La figure 24A montre la solidarisation des poulies A0, A1 et A2 sur l'axe de gauche Ax du mode d'exécution de la figure 19 à deux circuits de câbles mouflés C1 et C2. Les poulies A0 et A1 appartenant au câble C2 sont solidarisées par l'emploi d'une poulie double et la poulie A2 est solidarisée par la vis de blocage V à l'axe Ax et donc à la poulie double A0-A1. Pour désolidariser la poulie A2 de la poulie double A0-A1 la vis V est desserrée et dégagée de l'axe Ax (voir figure 24B)The figure 24A shows the joining of the pulleys A0, A1 and A2 on the left axle Ax of the execution mode of the figure 19 with two circuits of chained cables C1 and C2. The pulleys A0 and A1 belonging to the cable C2 are secured by the use of a double pulley and the pulley A2 is secured by the locking screw V to the axis Ax and thus to the double pulley A0-A1. In order to separate the pulley A2 from the double pulley A0-A1, the screw V is loosened and disengaged from the axis Ax (see figure 24B )

VI/ Dispositif antichuteVI / Fall arrest device

Suivant un mode de réalisation, il peut être avantageux de remédier à une éventuelle rupture de l'un des deux liens. Cette rupture aurait pour effet de neutraliser le système, et, en cas de décentrage de la charge, le support pourrait brutalement s'incliner jusqu'à une position proche de la verticale. Afin d'éviter cette conséquence, la présente invention englobe également l'intégration, dans le système de suspension, d'un système de dispositif antichute qui s'enclenche sur l'axe d'extrémité coordonné, pour le bloquer en cas d'accélération de son mouvement de rotation au delà d'un degré d'accélération et/ou de vitesse de rotation déterminé, notamment par suite de rupture de l'un des deux liens.According to one embodiment, it may be advantageous to remedy a possible break in one of the two links. This breakage would have the effect of neutralizing the system, and, in case of decentration of the load, the support could abruptly bend to a position close to the vertical. In order to avoid this consequence, the present invention also includes the integration, in the suspension system, of a fall arrest device system which engages the coordinated end axis, to block it in case of acceleration. its rotational movement beyond a given degree of acceleration and / or speed of rotation, in particular as a result of breaking one of the two links.

La figure 25A montre un mode d'exécution de la figure 19 avec un tel dispositif antichute DA prévu pour chacun des deux axes d'extrémité Ax. Chaque dispositif antichute DA est supporté par la cage associée CA des poulies de type A respectivement de type B et chacun de ces dispositifs antichute DA comporte un boîtier fixe BT et un disque D claveté sur l'axe associé Ax pour rotation avec celui-ci. Le disque D est pourvu sur sa circonférence de plusieurs encoches E et une bille ou un rouleau BI est reçu dans chaque encoche E. En cas de rupture d'un câble, par exemple le câble C1, sous l'effet de l'accélération de l'axe Ax et du disque D les billes ou les rouleaux BI sont forcés radialement vers l'extérieur des encoches E pour venir se bloquer à l'intérieur du boîtier BT et bloquer toute rotation de l'arbre Ax. La figure 25B montre une vue de dessus du système de dispositif de la figure 25A avec un dispositif antichute DA fixé à la cage CA à l'extrémité de l'axe Ax sur le côté des deux poulies séparées A2, A3 respectivement B0, B1. Les figures 24A et 24B montrent aussi le dispositif antichute DA monté sur une plaque de support PL soudée à la cage CA.The figure 25A shows a mode of execution of the figure 19 with such a fall arrest device DA provided for each of the two axes Ax end. Each fall arrest device DA is supported by the associated cage CA type A and B type pulleys and each of these fall arrest devices DA comprises a fixed housing BT and a disc D keyed on the associated axis Ax for rotation therewith. The disk D is provided on its circumference with several notches E and a ball or a roll BI is received in each notch E. In case of rupture of a cable, for example the cable C1, under the effect of the acceleration of the axis Ax and the disk D the balls or the rollers BI are forced radially outwardly of the notches E to come to lock inside the housing BT and block any rotation of the shaft Ax. The figure 25B shows a top view of the device system of the figure 25A with a fall arrest device DA fixed to the cage CA at the end of the axis Ax on the side of the two separate pulleys A2, A3 respectively B0, B1. The Figures 24A and 24B also show the fall arrest device DA mounted on a support plate PL welded to the cage CA.

VII/ Solution préférentielleVII / Preferred solution

Suivant une réalisation préférentielle, représentée par la figure 26, au lieu d'avoir un treuil situé verticalement au-dessus de chaque extrémité du support, soit au total deux treuils, on peut avoir un enroulement des deux brins courants verticaux du système autour de deux tambours 10, 11 ou poulies d'entraînement calées sur l'axe d'un même moteur M.According to a preferred embodiment, represented by the figure 26 instead of having a winch located vertically above each end of the support, in total two winches, one can have a winding of the two vertical vertical strands of the system around two drums 10, 11 or drive pulleys set on the axis of a single motor M.

A cet effet, les deux brins considérés passent à l'extrémité supérieure de leur parcours vertical autour d'une poulie de renvoi 12, 13, et suivent alors un trajet horizontal l'un vers l'autre jusqu'à une autre poulie de renvoi 14, 15 leur donnant des directions à nouveau parallèles à proximité l'un de l'autre pour permettre leur enroulement ou déroulement simultané sur deux organes rotatifs d'enroulement ou d'entraînement d'un même treuil 16. La figure 26 représente un exemple d'un tel montage avec la version préférentielle de mouflage double.For this purpose, the two considered strands pass at the upper end of their vertical path around a pulley 12, 13, and then follow a horizontal path towards each other to another pulley 14, 15 giving them again parallel directions close to each other to allow their winding or simultaneous unwinding on two rotary winding or driving members of the same winch 16. The figure 26 represents an example of such an assembly with the preferred version of dual haul.

Ce montage peut être lui-même intégré dans un chariot actionné à distance pour permettre la translation du support en complément à son mouvement vertical. De même, ce montage peut être assorti des dispositifs de sécurité anti-chute ou anti-dévers connus sur les types de montage classiques.This assembly can itself be integrated in a carriage operated remotely to allow the translation of the support in addition to its vertical movement. Likewise, this assembly can be provided with anti-fall or anti-roll safety devices known on conventional mounting types.

Le système décrit ci-dessus peut fonctionner avec des sangles à la place de câbles, et avec des poulies dont les gorges ont le profil approprié. Il peut fonctionner également avec des chaînes à la place des câbles et des pignons à la place des poulies. Le support peut prendre notamment la forme d'une nacelle ou d'une plate-forme de chantier, sur laquelle les câbles, ou liens équivalents, sont guidés à la partie supérieure d'étriers d'extrémité par des dispositifs adéquats. Il peut être également utilisé pour la manoeuvre verticale d'un palonnier, ou de tout autre support de charge présentant la configuration adéquate pour l'application de l'invention.The system described above can work with straps instead of cables, and with pulleys whose grooves have the appropriate profile. It can also work with chains in place of cables and sprockets instead of pulleys. The support may take the form of a nacelle or a construction platform, on which the cables, or equivalent links, are guided to the upper part of end stirrups by suitable devices. It can also be used for the vertical maneuver of a spreader, or any other load carrier having the configuration suitable for the application of the invention.

Claims (10)

  1. Suspension and lifting system for a load support (S), applied towards two opposite ends of said load support, said load support being suspended by at least four suspension reaches constituted by at least two suspension elements (C1, C2), each suspension element being suspended towards one of its ends from a fixed point (PF1, PF2) and towards the other end from a driven member of a lifting means (T1, T2) and passing around circular deflection supports (A1, B1; A3, B3) being in constrained rotation with the suspension elements, and mounted on parallel axles (Ax) fixed respectively towards each end of the load support;
    each suspension element (C1 or C2) being connected to its associated lifting means (T1 or T2) towards the end of the load support opposite the end of the load support towards which the other suspension element (C2 or C1) is connected to the other lifting means (T2 or T1) ;
    characterized in that at least one (C1) of the suspension elements is tackled and passes successively around at least two supplemental intermediate circular supports (A2, B2) located towards each end, following a crossed path, so that on at least one of the end axles (Ax), at least one intermediate circular support (A2) of said one suspension element (C1) rotates in the same direction as at least one coaxial circular support (A1) of the other suspension element (C2) under identical action of the two lifting means (T1, T2) related to the suspension elements, whereas said two coaxial circular supports (A1, A2) are respectively loaded by a torque of equal intensity and of opposite directions when their common axle (Ax) is constrained downwardly or upwardly by a same force, independent of the action of the lifting means; and
    in that said two coaxial circular supports (A1, A2) have the same working diameter and are interlocked in rotation so that a rotation in opposite directions of said two coaxial supports (A1, A2) under the effect of said force is prevented without thereby affecting the action of the lifting means on the two coaxial circular supports through the intermediary of said suspension elements.
  2. System according to claim 1, characterized in that the other suspension element (C2) is also tackled and passes successively around at least two supplemental intermediate circular supports (A0, B0) located towards each end, following a crossed path, so that on at least one of the end axles (Ax), at least one intermediate circular support (B0) of said other suspension element (C2) rotates in the same direction as at least one coaxial circular support (B2) of the first suspension element under identical action of the two lifting means (T1, T2) related to the suspension elements, whereas said two coaxial circular supports (B0, B2) are respectively loaded by a torque of equal intensity and of opposite directions when their common axle (Ax) is constrained downwardly or upwardly by a same force, independent of the action of the lifting means; and
    in that said two coaxial circular supports (B0, B2) have the same working diameter and are interlocked in rotation so that a rotation in opposite directions of said two coaxial supports (B0, B2) under the effect of said force is prevented without thereby affecting the action of the lifting means on the two coaxial circular supports through the intermediary of said suspension elements.
  3. System according to claim 1 or 2, characterized in that the coaxial circular supports interlocked in rotation are contiguous (A1, A2, B0, B2).
  4. System according to claim 2, characterized in that on each end axle (Ax) three contiguous circular supports (A0, A1, A2; B0, B3, B2) are interlocked in rotation.
  5. System according to any one of claims 1 to 4, characterized in that at each end of the load support (S) all circular supports are coaxial and have the same working diameter.
  6. System according to any one of the preceding claims, comprising a device (V) for decoupling the normally interlocked coaxial circular supports, so as to make them punctually and provisionally independent in rotation one from the other or the ones from the others, and to permit manoeuvring thereof to re-establish the horizontal position of the load support (S), if necessary, or to adjust a desired inclination thereof.
  7. System according to any one of the preceding claims, characterized in that the circular supports are constituted by pulleys and the suspension elements (c1, c2) are constituted by cables or belts, cooperating with the pulleys provided with corresponding peripheral profiles, said cables or belts having a coefficient of friction necessary for their firm engagement as regards their cooperation with the pulleys.
  8. System according to any one of claims 1 to 4, characterized in that the suspension elements (C1, C2) are constituted by chains and the circular supports by sprockets whose toothing corresponds to the configuration of the chains.
  9. System according to any one of the preceding claims, characterized in that the upper portion of each suspension reach of the suspension elements (C1, C2) connected to a lifting means is deflected laterally towards the other suspension reach, the two suspension reaches thusly brought closer towards one another being deflected a second time to re-establish their parallel direction one with respect to the other in an identical sense to allow them to be wound on two winding members (10, 11) belonging to one single drive means
  10. System according to any one of the preceding claims, comprising at least one anti-fall device (DA) engageable on one of the end axles (Ax) to arrest the same in case of acceleration of its rotational movement beyond a predetermined limit of acceleration and/or speed of rotation, in particular in case of failure of one of the two suspension elements (C1, C2).
EP04102502A 2003-06-13 2004-06-03 System for lifting and stabilising a suspended load support Expired - Lifetime EP1486452B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU91026 2003-06-13
LU91026A LU91026B1 (en) 2003-06-13 2003-06-13 System for lifting and stabilizing a suspended load support.

Publications (3)

Publication Number Publication Date
EP1486452A2 EP1486452A2 (en) 2004-12-15
EP1486452A3 EP1486452A3 (en) 2006-04-19
EP1486452B1 true EP1486452B1 (en) 2008-08-13

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Application Number Title Priority Date Filing Date
EP04102502A Expired - Lifetime EP1486452B1 (en) 2003-06-13 2004-06-03 System for lifting and stabilising a suspended load support

Country Status (9)

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US (1) US7070171B2 (en)
EP (1) EP1486452B1 (en)
CN (1) CN100398429C (en)
AT (1) ATE404487T1 (en)
CA (1) CA2470266A1 (en)
DE (1) DE602004015676D1 (en)
ES (1) ES2312926T3 (en)
HK (1) HK1073096A1 (en)
LU (1) LU91026B1 (en)

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AT507373B1 (en) * 2008-10-09 2010-12-15 Amst Systemtechnik Gmbh MOTION AND ORIENTATION SIMULATOR
US20100248603A1 (en) * 2009-03-31 2010-09-30 Decastro Eugene Retrofit Fume Hood Drive Assembly
WO2011078846A1 (en) * 2009-12-21 2011-06-30 Aho Melvin S Improved self-propelled transportable rock picker
US8070134B1 (en) 2011-03-04 2011-12-06 Bellantoni John F Stabilized single-motor lift system without top rails
CN102506136B (en) * 2011-09-23 2015-04-15 三一汽车制造有限公司 Rope driving mechanism frame, rope driving mechanism and engineering machinery
CN103963047B (en) * 2014-05-05 2015-10-28 西安电子科技大学 With the rope traction parallel robot device of rotation preventing mechanism
US20150327935A1 (en) * 2014-05-19 2015-11-19 University Of Dundee Medical Equipment Support System
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CN110436362B (en) * 2019-06-28 2021-11-12 佳力机械股份有限公司 Lifting hook stabilizing system of ring chain hoist and hoisting equipment
CN110589523A (en) * 2019-09-03 2019-12-20 中国航空工业集团公司西安飞机设计研究所 Aviation cargo handling device
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CN112110336B (en) * 2020-09-21 2022-11-25 中国建筑第八工程局有限公司 Device for mounting steel beam on floor and construction method thereof
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Also Published As

Publication number Publication date
CN100398429C (en) 2008-07-02
ATE404487T1 (en) 2008-08-15
LU91026B1 (en) 2004-12-14
DE602004015676D1 (en) 2008-09-25
US20040251455A1 (en) 2004-12-16
EP1486452A3 (en) 2006-04-19
US7070171B2 (en) 2006-07-04
CA2470266A1 (en) 2004-12-13
EP1486452A2 (en) 2004-12-15
ES2312926T3 (en) 2009-03-01
HK1073096A1 (en) 2005-09-23
CN1594063A (en) 2005-03-16

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