EP0678432A1 - Detachable grip for a vehicle towed by cable - Google Patents

Detachable grip for a vehicle towed by cable Download PDF

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Publication number
EP0678432A1
EP0678432A1 EP95410034A EP95410034A EP0678432A1 EP 0678432 A1 EP0678432 A1 EP 0678432A1 EP 95410034 A EP95410034 A EP 95410034A EP 95410034 A EP95410034 A EP 95410034A EP 0678432 A1 EP0678432 A1 EP 0678432A1
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EP
European Patent Office
Prior art keywords
cable
jaws
pliers according
toggle joint
toggle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP95410034A
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German (de)
French (fr)
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EP0678432B1 (en
Inventor
Georges Toyre
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Poma SA
Original Assignee
Pomagalski SA
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Filing date
Publication date
Application filed by Pomagalski SA filed Critical Pomagalski SA
Publication of EP0678432A1 publication Critical patent/EP0678432A1/en
Application granted granted Critical
Publication of EP0678432B1 publication Critical patent/EP0678432B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
    • B61B12/00—Component parts, details or accessories not provided for in groups B61B7/00 - B61B11/00
    • B61B12/12—Cable grippers; Haulage clips
    • B61B12/125—Cable grippers; Haulage clips for non aerial ropeways, e.g. on or under the ground

Definitions

  • the invention relates to a disengageable clamp for coupling a vehicle to a tractor cable of a track-side transport installation on its own site, comprising a clamp control mechanism fixed to the bottom of the vehicle, a keel secured to the control mechanism and having a vertical branch, which extends vertically downwards in the direction of the towing cable, being offset laterally with respect to the vertical plane containing the cable and a horizontal branch which extends at right angles to the vertical branch and extends transverse to the track above the cable, a pair of jaws carried by the horizontal branch and of which at least one movable jaw is slidably mounted to come selectively in a closed cable clamping position and in an open cable release position and a movement transmission device between the control mechanism and the movable jaw for controlling the opening and closing of the clamp.
  • Cable traction of vehicles in a clean site transport installation has many advantages, in particular simplicity and reliability, but it requires the use of disengageable pliers, for coupling and uncoupling the vehicle to the cable, including opening and closing are perfectly ensured, in order to avoid any risk of slipping of the clamp on the cable and any wrong operation.
  • Known clamps are complicated and often associated with multiple control systems in order to avoid any accident.
  • the present invention aims to allow the production of a clamp of simple structure, whose operation is perfectly reliable and this clamp is characterized in that said movement transmission device comprises a rigid rod, mounted for rotation inside of the keel and bearing at its upper end a crank and that the crank is attacked by a spring-loaded toggle of said control mechanism, capable of occupying a position of extension and passing beyond neutral, where the toggle exerts a maximum force for tightening the cable and a broken position for relaxing the spring and opening the jaws.
  • the rigid rod rotatably mounted inside the keel, provides a reliable connection between the jaws protruding from the bottom of the vehicle and the control mechanism, which is arranged under cover directly under the bottom or is incorporated therein. latest.
  • the position of the jaws is faithfully represented by the position of the crank wedged on the upper end of the rod and this crank is attacked by a spring-loaded toggle, which ensures stable opening and closing positions of the clamp.
  • the toggle joint is controlled by a jack, for example hydraulic, and the assembly is arranged so that when the jaws are closed, the jack exerts an almost zero force during the jaw approach phase, this becoming maximum when the cable is tightened and decreasing thereafter to become zero or even negative, when the neutral point of the knee lifter is exceeded.
  • the toggle joint includes one or preferably two telescopic levers, each associated with a compression spring, advantageously constituted by a stack of elastic washers, which urge the telescopic lever in extension.
  • One end of the toggle joint is hinged at a fixed point while the opposite end is hinged to the crank.
  • the cylinder rod is articulated on the axis of the toggle.
  • the fixed jaw is shaped on the horizontal branch of the keel, which is arranged as a guide slide of a slide forming the movable jaw.
  • the slide carries a pivot pin of a keyed crank on the lower end of the rigid rod.
  • a track 10 on its own site, consists of two rolling tracks 14,15, each associated with a guide track 16,17.
  • the vehicles 18 traveling on track 10 are provided with running wheels 19 and guide wheels 20, which cooperate respectively with the running tracks 14,15 and the guide tracks 16,17.
  • These wheels 19, 20 are with pneumatic tires, but it is clear that the invention is applicable to a railway track and to vehicles of any other type.
  • a towing cable 11, in the form of an endless loop with return strand 12, extends in the axis of the track, being guided by support and holding pulleys 13 and being driven by a motor (not shown ).
  • a clamp 21 At the bottom of the vehicle 18 is fixed a clamp 21, capable of enclosing the cable 11 to couple the vehicle to this towing cable.
  • the clamp 21 comprises a keel 22, having a vertical branch 23 projecting downward and offset laterally for the crossing of the pulleys 13 and a horizontal branch 24, which extends at right angles to the branch vertical 23 and extends transversely above the cable 11.
  • the horizontal branch 24 carries a pair of jaws 25, 26, one of which 25 is fixed and the other of which 26 is movable to form a disengageable clamp.
  • the movable jaw 26 is connected by a movement transmission device to a control mechanism 27 fixed to the bottom of the vehicle 18. This mechanism 27 controls the opening and closing of the clamp 21 and thus the coupling and uncoupling of the vehicle 18 to the tractor cable 11.
  • the horizontal branch 24 is shaped at its end into a fixed jaw 25, subdivided into two parts, which surround a slide 28, movable transversely to the track 10.
  • the slide 28 carries , opposite the fixed jaw 25, the movable jaw 26 to form a cable clamping jaw 11.
  • In the vertical branch 23 is mounted to rotate a vertical rigid rod 29, at the ends of which are respectively keyed a lower crank 30 and a upper crank 31.
  • the lower crank 30 is articulated on a pin 32 carried by the slide 28, so as to transform a rotation of the rod 29 into a sliding of the slide 28.
  • the upper crank 31 belongs to the control mechanism 27 and it is articulated to a lever 33 of a toggle joint 34, the other lever 35 of which is articulated to a fixed point 36.
  • the two levers 33, 35 are connected by the axis 37 of the toggle 34.
  • Each lever 33,35 is in two telescopic parts, between which is interposed a compression spring 38, constituted, for example, by a stack of elastic washers, which urge the lever 33,35 in extension.
  • a compression spring 38 constituted, for example, by a stack of elastic washers, which urge the lever 33,35 in extension.
  • At the axis 37 of the toggle joint 34 is articulated the end of a rod 39 of a jack 40, for example hydraulic or pneumatic, for controlling the extension or vice versa the breaking of the toggle joint 34.
  • the assembly is arranged so that in the extended position of the toggle joint 34, shown in FIG. 3, the jaws 25, 26 grip the cable 11 with a clamping force corresponding to that of the springs 38, multiplied by the lever arms of the cranks 30.31.
  • the neutral point of the toggle joint 34 is slightly exceeded and this extension position is thus a stable position for closing the clamp 21.
  • the opening of the clamp 21 is controlled by the jack 40, which moves the axis 37 of the toggle 34 to the left in FIG. 3, thereby causing the toggle 34 to break and the cranks 30, 31 to pivot in an anti-clockwise direction.
  • the slide 28 is moved to the left in the open position of the jaws 25, 26, shown in FIG. 4.
  • FIG. 5 represents the force exerted by the jack 40 to actuate the clamp from the open position O, shown in FIG. 4, to the position F of the figure. 3.
  • the force is almost zero.
  • the toggle system 34 ensures thereafter, due to the gradual arrival in extension of the toggle, a decrease in this force, which becomes zero in neutral and even negative after crossing the latter. It is clear that as soon as the jack has crossed the maximum value of the force the closing movement continues automatically and the risk of an incomplete closing is almost zero.
  • the structure of the clamp is simple, in particular the projecting part constituted by the jaws 25, 26.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
  • Handcart (AREA)
  • Flexible Shafts (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Installation Of Indoor Wiring (AREA)
  • Clamps And Clips (AREA)
  • Tents Or Canopies (AREA)
  • Vehicle Body Suspensions (AREA)
  • Agricultural Machines (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)

Abstract

The clamp consists of a control mechanism (27) with a vertical keel (22) lying parallel to the cable and offset to one side of it, and two jaws (25,26) carried on a horizontal branch (24) at the bottom of the keel. One of the jaws is able to slide relative to the other to grip or release the traction cable and is actuated by a rigid rod (29) mounted on the keel so it can rotate and is equipped with levers (30,31) at its lower and upper ends. The lower lever is connected to the moving jaw by sliders (28), and the upper one to a control cylinder rod (40) by a pair of pivoted and spring-loaded arms (33). <IMAGE>

Description

L'invention est relative à une pince débrayable d'accouplement d'un véhicule à un câble tracteur d'une installation de transport à voie en site propre, comprenant un mécanisme de commande de la pince fixé au fond du véhicule, une quille solidaire du mécanisme de commande et ayant une branche verticale, qui s'étend verticalement vers le bas en direction du câble tracteur, en étant décalée latéralement par rapport au plan vertical contenant le câble et une branche horizontale qui prolonge en équerre la branche verticale et s'étend transversalement à la voie au-dessus du câble, une paire de mors portée par la branche horizontale et dont au moins un mors mobile est monté à coulissement pour venir sélectivement en une position fermé de serrage du câble et en une position ouvert de libération du câble et un dispositif de transmission de mouvement entre le mécanisme de commande et le mors mobile pour commander l'ouverture et la fermeture de la pince.The invention relates to a disengageable clamp for coupling a vehicle to a tractor cable of a track-side transport installation on its own site, comprising a clamp control mechanism fixed to the bottom of the vehicle, a keel secured to the control mechanism and having a vertical branch, which extends vertically downwards in the direction of the towing cable, being offset laterally with respect to the vertical plane containing the cable and a horizontal branch which extends at right angles to the vertical branch and extends transverse to the track above the cable, a pair of jaws carried by the horizontal branch and of which at least one movable jaw is slidably mounted to come selectively in a closed cable clamping position and in an open cable release position and a movement transmission device between the control mechanism and the movable jaw for controlling the opening and closing of the clamp.

La traction par câble de véhicules d'une installation de transport en site propre présente de nombreux avantages, notamment de simplicité et de fiabilité, mais elle nécessite l'emploi de pinces débrayables, pour l'accouplement et le désaccouplement du véhicule au câble, dont l'ouverture et la fermeture sont parfaitement assurées, afin d'éviter tout risque de glissement de la pince sur le câble et toute fausse manoeuvre. Les pinces connues sont compliquées et souvent associées à de multiples systèmes de contrôle en vue d'éviter tout accident.Cable traction of vehicles in a clean site transport installation has many advantages, in particular simplicity and reliability, but it requires the use of disengageable pliers, for coupling and uncoupling the vehicle to the cable, including opening and closing are perfectly ensured, in order to avoid any risk of slipping of the clamp on the cable and any wrong operation. Known clamps are complicated and often associated with multiple control systems in order to avoid any accident.

La présente invention a pour but de permettre la réalisation d'une pince de structure simple, dont le fonctionnement est parfaitement fiable et cette pince est caractérisée en ce que ledit dispositif de transmission de mouvement comporte une tige rigide, montée à rotation à l'intérieur de la quille et portant à son extrémité supérieure une manivelle et que la manivelle est attaquée par une genouillère à ressort dudit mécanisme de commande, susceptible d'occuper une position d'extension et de dépassement du point mort, où la genouillère exerce une force maximale de serrage du câble et une position brisée de détente du ressort et d'ouverture des mors.The present invention aims to allow the production of a clamp of simple structure, whose operation is perfectly reliable and this clamp is characterized in that said movement transmission device comprises a rigid rod, mounted for rotation inside of the keel and bearing at its upper end a crank and that the crank is attacked by a spring-loaded toggle of said control mechanism, capable of occupying a position of extension and passing beyond neutral, where the toggle exerts a maximum force for tightening the cable and a broken position for relaxing the spring and opening the jaws.

La tige rigide, montée à rotation à l'intérieur de la quille, assure une liaison fiable entre les mors en saillie du fond du véhicule et le mécanisme de commande, lequel est disposé à l'abri directement sous le fond ou est incorporé à ce dernier. La position des mors est fidèlement représentée par la position de la manivelle calée sur l'extrémité supérieure de la tige et cette manivelle est attaquée par une genouillère à ressort, qui assure des positions stables d'ouverture et de fermeture de la pince. La genouillère est commandée par un vérin, par exemple hydraulique et l'ensemble est agencé de façon que lors d'une commande de fermeture des mors, le vérin exerce pendant la phase d'approche des mors une force quasi nulle, celle-ci devenant maximale au moment du serrage du câble et décroîssant par la suite pour devenir nulle ou même négative, lors du dépassement du point mort de la genouillère. On comprend qu'à partir du moment où le vérin a franchi la force maximale, le mouvement est irréversible et la fermeture correcte des mors est assurée. D'une manière analogue l'ouverture des mors est assurée dès que le vérin a amené la genouillère en deçà du point mort.The rigid rod, rotatably mounted inside the keel, provides a reliable connection between the jaws protruding from the bottom of the vehicle and the control mechanism, which is arranged under cover directly under the bottom or is incorporated therein. latest. The position of the jaws is faithfully represented by the position of the crank wedged on the upper end of the rod and this crank is attacked by a spring-loaded toggle, which ensures stable opening and closing positions of the clamp. The toggle joint is controlled by a jack, for example hydraulic, and the assembly is arranged so that when the jaws are closed, the jack exerts an almost zero force during the jaw approach phase, this becoming maximum when the cable is tightened and decreasing thereafter to become zero or even negative, when the neutral point of the knee lifter is exceeded. We understand that from the moment the cylinder has crossed the maximum force, the movement is irreversible and the correct closing of the jaws is ensured. In an analogous manner, the opening of the jaws is ensured as soon as the jack has brought the toggle joint below the neutral point.

La genouillère comprend un ou de préférence deux leviers télescopiques, chacun associé à un ressort de compression, avantageusement constitué par un empilage de rondelles élastiques, qui sollicitent le levier télescopique en extension. L'une des extrémité de la genouillère est articulée à un point fixe tandis que l'extrémité opposée est articulée à la manivelle. La tige du vérin est articulé sur l'axe de la genouillère.The toggle joint includes one or preferably two telescopic levers, each associated with a compression spring, advantageously constituted by a stack of elastic washers, which urge the telescopic lever in extension. One end of the toggle joint is hinged at a fixed point while the opposite end is hinged to the crank. The cylinder rod is articulated on the axis of the toggle.

Le mors fixe est conformé sur la branche horizontale de la quille, laquelle est agencée en glissière de guidage d'un coulisseau formant le mors mobile. Le coulisseau porte un tourillon d'articulation d'une manivelle clavetée sur l'extrémité inférieure de la tige rigide.The fixed jaw is shaped on the horizontal branch of the keel, which is arranged as a guide slide of a slide forming the movable jaw. The slide carries a pivot pin of a keyed crank on the lower end of the rigid rod.

D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre d'un mode de mise en oeuvre de l'invention donné à titre d'exemple et représenté aux dessins annexés, dans lesquels:

  • la figure 1 est une vue schématique d'un véhicule équipé d'une pince selon l'invention;
  • la figure 2 est une vue schématique en perspective d'une pince selon l'invention;
  • les figures 3 et 4 sont des vues en plan de la figure 2 montrant la pince respectivement en position fermé et ouvert;
  • la figure 5 est la courbe de variation de la force exercée par le vérin de commande de la pince, au cours de la course de fermeture.
Other advantages and characteristics will emerge more clearly from the description which follows of an embodiment of the invention given by way of example and shown in the appended drawings, in which:
  • Figure 1 is a schematic view of a vehicle equipped with a clamp according to the invention;
  • Figure 2 is a schematic perspective view of pliers according to the invention;
  • Figures 3 and 4 are plan views of Figure 2 showing the clamp respectively in the closed and open position;
  • Figure 5 is the curve of variation of the force exerted by the clamp actuator, during the closing stroke.

Sur les figures une voie 10, en site propre, est constituée de deux pistes de roulement 14,15, chacune associée à une piste de guidage 16,17. Les véhicules 18 circulant sur la voie 10 sont pourvus de roues de roulement 19 et de roues de guidage 20, qui coopèrent respectivement avec les pistes de roulement 14,15 et les pistes de guidage 16,17. Ces roues 19,20 sont à bandage pneumatique, mais il est clair que l'invention est applicable à une voie ferrée et à des véhicules de tout autre type. Un câble tracteur 11, en forme de boucle sans fin à brin de retour 12, s'étend dans l'axe de la voie, en étant guidé par des poulies de support et de maintien 13 et en étant entraîné par un moteur ( non représenté ). Au fond du véhicule 18 est fixée une pince 21, susceptible d'enserrer le câble 11 pour accoupler le véhicule à ce câble tracteur. La pince 21 comprend une quille 22, ayant une branche verticale 23 en saillie vers le bas et décalée latéralement pour le franchissement des poulies 13 et une branche horizontale 24, qui prolonge en équerre la branche verticale 23 et s'étend transversalement au-dessus du câble 11. La branche horizontale 24 porte une paire de mors 25,26, dont l'un 25 est fixe et dont l'autre 26 est mobile pour constituer une pince débrayable. Le mors mobile 26 est relié par un dispositif de transmission de mouvement à un mécanisme de commande 27 fixé au fond du véhicule 18. Ce mécanisme 27 commande l'ouverture et la fermeture de la pince 21 et ainsi l'accouplement et le désaccouplement du véhicule 18 au câble tracteur 11.In the figures, a track 10, on its own site, consists of two rolling tracks 14,15, each associated with a guide track 16,17. The vehicles 18 traveling on track 10 are provided with running wheels 19 and guide wheels 20, which cooperate respectively with the running tracks 14,15 and the guide tracks 16,17. These wheels 19, 20 are with pneumatic tires, but it is clear that the invention is applicable to a railway track and to vehicles of any other type. A towing cable 11, in the form of an endless loop with return strand 12, extends in the axis of the track, being guided by support and holding pulleys 13 and being driven by a motor (not shown ). At the bottom of the vehicle 18 is fixed a clamp 21, capable of enclosing the cable 11 to couple the vehicle to this towing cable. The clamp 21 comprises a keel 22, having a vertical branch 23 projecting downward and offset laterally for the crossing of the pulleys 13 and a horizontal branch 24, which extends at right angles to the branch vertical 23 and extends transversely above the cable 11. The horizontal branch 24 carries a pair of jaws 25, 26, one of which 25 is fixed and the other of which 26 is movable to form a disengageable clamp. The movable jaw 26 is connected by a movement transmission device to a control mechanism 27 fixed to the bottom of the vehicle 18. This mechanism 27 controls the opening and closing of the clamp 21 and thus the coupling and uncoupling of the vehicle 18 to the tractor cable 11.

En se référant plus particulièrement aux figures 2-4 on voit que la branche horizontale 24 est conformée à son extrémité en un mors fixe 25, subdivisé en deux parties, qui encadrent un coulisseau 28, mobile transversalement à la voie 10. Le coulisseau 28 porte, en regard du mors fixe 25, le mors mobile 26 pour constituer une mâchoire de serrage du câble 11. Dans la branche verticale 23 est montée à rotation une tige rigide verticale 29, aux extrémités de laquelle sont clavetées respectivement une manivelle inférieure 30 et une manivelle supérieure 31. La manivelle inférieure 30 est articulée sur un tourillon 32 porté par le coulisseau 28, de façon à transformer une rotation de la tige 29 en un coulissement du coulisseau 28. La manivelle supérieure 31 appartient au mécanisme de commande 27 et elle est articulée à un levier 33 d'une genouillère 34, dont l'autre levier 35 est articulé à un point fixe 36. Les deux leviers 33,35 sont reliés par l'axe 37 de la genouillère 34. Chaque levier 33,35 est en deux parties télescopiques, entre lesquelles est intercalé un ressort de compression 38, constitué, par exemple, par un empilage de rondelles élastiques, qui sollicitent le levier 33,35 en extension. A l'axe 37 de la genouillère 34 est articulée l'extrémité d'une tige 39 d'un vérin 40, par exemple hydraulique ou pneumatique, pour commander l'extension ou inversement la brisure de la genouillère 34.Referring more particularly to FIGS. 2-4, it can be seen that the horizontal branch 24 is shaped at its end into a fixed jaw 25, subdivided into two parts, which surround a slide 28, movable transversely to the track 10. The slide 28 carries , opposite the fixed jaw 25, the movable jaw 26 to form a cable clamping jaw 11. In the vertical branch 23 is mounted to rotate a vertical rigid rod 29, at the ends of which are respectively keyed a lower crank 30 and a upper crank 31. The lower crank 30 is articulated on a pin 32 carried by the slide 28, so as to transform a rotation of the rod 29 into a sliding of the slide 28. The upper crank 31 belongs to the control mechanism 27 and it is articulated to a lever 33 of a toggle joint 34, the other lever 35 of which is articulated to a fixed point 36. The two levers 33, 35 are connected by the axis 37 of the toggle 34. Each lever 33,35 is in two telescopic parts, between which is interposed a compression spring 38, constituted, for example, by a stack of elastic washers, which urge the lever 33,35 in extension. At the axis 37 of the toggle joint 34 is articulated the end of a rod 39 of a jack 40, for example hydraulic or pneumatic, for controlling the extension or vice versa the breaking of the toggle joint 34.

L'ensemble est agencé de manière que dans la position d'extension de la genouillère 34, représentée à la figure 3, les mors 25,26 enserrent le câble 11 avec une force de serrage correspondant à celle des ressorts 38, multipliée par les bras de levier des manivelles 30,31. Le point mort de la genouillère 34 est légèrement dépassé et cette position d'extension est ainsi une position stable de fermeture de la pince 21. L'ouverture de la pince 21 est commandée par le vérin 40, qui déplace l'axe 37 de la genouillère 34 vers la gauche sur la figure 3, en provoquant ainsi la brisure de la genouillère 34 et le pivotement des manivelles 30,31 dans le sens inverse des aiguilles d'une montre. Le coulisseau 28 est déplacé vers la gauche en position d'ouverture des mors 25,26, représentée à la figure 4. Dès le franchissement du point mort les ressorts 38 participent à la brisure de la genouillère 34 et la position d'ouverture est également stable. Une alimentation inverse du vérin 40 commande bien entendu la fermeture de la pince 21. La figure 5 représente la force exercée par le vérin 40 pour actionner la pince de la position ouvert O, représentée à la figure 4, à la position F de la figure 3. Pendant une première phase d'approche des mors 25,26 du câble 11 la force est quasi nulle. Lorsque les mors 25,26 viennent en appui A du câble cette force augmente rapidement pour atteindre une valeur maximale. Le système de genouillère 34, selon l'invention, assure par la suite, du fait de la venue progressive en extension de la genouillère, une diminution de cette force, qui devient nulle au point mort et même négative après le franchissement de ce dernier. Il est clair que dès que le vérin a franchi la valeur maximale de la force le mouvement de fermeture se poursuit automatiquement et le risque d'une fermeture inachevée est quasi nul.The assembly is arranged so that in the extended position of the toggle joint 34, shown in FIG. 3, the jaws 25, 26 grip the cable 11 with a clamping force corresponding to that of the springs 38, multiplied by the lever arms of the cranks 30.31. The neutral point of the toggle joint 34 is slightly exceeded and this extension position is thus a stable position for closing the clamp 21. The opening of the clamp 21 is controlled by the jack 40, which moves the axis 37 of the toggle 34 to the left in FIG. 3, thereby causing the toggle 34 to break and the cranks 30, 31 to pivot in an anti-clockwise direction. The slide 28 is moved to the left in the open position of the jaws 25, 26, shown in FIG. 4. As soon as the neutral point is crossed, the springs 38 participate in the breaking of the toggle joint 34 and the open position is also stable. A reverse supply of the jack 40 naturally controls the closing of the clamp 21. FIG. 5 represents the force exerted by the jack 40 to actuate the clamp from the open position O, shown in FIG. 4, to the position F of the figure. 3. During a first approach phase of the jaws 25, 26 of the cable 11, the force is almost zero. When the jaws 25, 26 come to bear A on the cable, this force increases rapidly to reach a maximum value. The toggle system 34, according to the invention, ensures thereafter, due to the gradual arrival in extension of the toggle, a decrease in this force, which becomes zero in neutral and even negative after crossing the latter. It is clear that as soon as the jack has crossed the maximum value of the force the closing movement continues automatically and the risk of an incomplete closing is almost zero.

La structure de la pince est simple, notamment la partie en saillie constituée par les mors 25,26.The structure of the clamp is simple, in particular the projecting part constituted by the jaws 25, 26.

L'invention est bien entendu nullement limitée au mode de mise en oeuvre plus particulièrement décrit en référence aux dessins et elle s'étend à toute variante restant dans le cadre des équivalences.The invention is of course in no way limited to the embodiment more particularly described with reference to the drawings and it extends to any variant remaining within the framework of equivalences.

Claims (10)

Pince débrayable d'accouplement d'un véhicule (18) à un câble tracteur (11) d'une installation de transport à voie (10) en site propre, comprenant un mécanisme de commande (27) de la pince fixé au fond du véhicule, une quille (22) solidaire du mécanisme de commande (27) et ayant une branche verticale (23), qui s'étend verticalement vers le bas en direction du câble tracteur (11) en étant décalée latéralement par rapport au plan vertical contenant le câble et une branche horizontale (24) qui prolonge en équerre la branche verticale (23) et s'etend transversalement à la voie (10), une paire de mors (25,26) portée par la branche horizontale (24) et dont au moins un mors mobile (26) est monté à coulissement pour venir sélectivement en une position fermé de serrage du câble (11) et en une position ouvert de libération du câble et un dispositif de transmission de mouvement (29-31) entre le mécanisme de commande (27) et le mors mobile (26) pour commander l'ouverture et la fermeture de la pince, caractérisée en ce que ledit dispositif de transmission de mouvement comporte une tige rigide (29), montée à rotation sur la quille (22) et portant à son extrémité supérieure une manivelle (31) et que la manivelle (31) est attaquée par une genouillère (34) à ressort (38) dudit mécanisme de commande, (27) susceptible d'occuper une position d'extension et de dépassement du point mort, où la genouillère (34) exerce une force maximale de serrage du câble (11) et une position brisée de détente du ressort (38) et d'ouverture des mors (25,26).Releasable clamp for coupling a vehicle (18) to a towing cable (11) of a tracked transport installation (10) in its own site, comprising a control mechanism (27) for the clamp fixed to the bottom of the vehicle , a keel (22) integral with the control mechanism (27) and having a vertical branch (23), which extends vertically downwards in the direction of the towing cable (11) being offset laterally with respect to the vertical plane containing the cable and a horizontal branch (24) which extends the vertical branch (23) at right angles and extends transversely to the track (10), a pair of jaws (25, 26) carried by the horizontal branch (24) and of which at at least one movable jaw (26) is slidably mounted to come selectively in a closed cable clamping position (11) and in an open cable release position and a movement transmission device (29-31) between the mechanism control (27) and the movable jaw (26) for controlling the opening and closing the clamp, characterized in that said movement transmission device comprises a rigid rod (29), rotatably mounted on the keel (22) and carrying at its upper end a crank (31) and that the crank ( 31) is attacked by a spring-loaded toggle (34) (38) of said control mechanism, (27) capable of occupying a position of extension and passing beyond neutral, where the toggle (34) exerts a maximum force of tightening of the cable (11) and a broken position for relaxing the spring (38) and opening the jaws (25, 26). Pince selon la revendication 1, caractérisée en ce que au moins l'un des leviers (33,35) de la genouillère (34) est télescopique et comprend un ressort à compression (38) sollicitant le levier en extension.Pliers according to claim 1, characterized in that at least one of the levers (33,35) of the toggle joint (34) is telescopic and comprises a compression spring (38) urging the lever in extension. Pince selon la revendication 1 ou 2, caractérisée en ce que l'une des extrémités de la genouillère (34) est articulée à ladite manivelle (31) et que l'extrémité opposée est articulée à un point fixe (36).Pliers according to claim 1 or 2, characterized in that one of the ends of the toggle joint (34) is articulated at said crank (31) and that the opposite end is articulated at a fixed point (36). Pince selon la revendication 1, 2 ou 3, caractérisée en ce qu'elle comporte un vérin de commande (40) qui coopère avec la genouillère (34) pour provoquer sélectivement l'extension et la brisure de la genouillère.Pliers according to claim 1, 2 or 3, characterized in that it comprises a control jack (40) which cooperates with the toggle joint (34) to selectively cause the extension and breakage of the toggle joint. Pince selon la revendication 4, caractérisée en ce que le vérin (40) agit sur l'axe d'articulation (37) des deux leviers (33,35) de la genouillère (34).Pliers according to claim 4, characterized in that the jack (40) acts on the articulation axis (37) of the two levers (33,35) of the toggle joint (34). Pince selon la revendication 4 ou 5, caractérisée en ce que la force exercée par le vérin (40) sur la genouillère (34), pour amener les mors (25,26) de la position ouvert à la position fermé, est, pendant le mouvement d'approche des mors du câble (11), quasi nulle, pour devenir maximale lorsque les mors viennent en appui du câble et pour décroître par la suite et devenir nulle ou même inverse, lors du dépassement du point mort.Pliers according to claim 4 or 5, characterized in that the force exerted by the jack (40) on the toggle joint (34), to bring the jaws (25,26) from the open position to the closed position, is, during the approach movement of the jaws of the cable (11), almost zero, to become maximum when the jaws come to bear on the cable and to decrease thereafter and become zero or even reverse, when passing neutral. Pince selon l'une quelconque des revendications précédentes, caractérisée en ce que les deux leviers (33,35) de la genouillère (34) sont télescopiques et que chaque levier comporte un empilage de rondelles élastiques (38), qui sollicitent le levier en extension.Pliers according to any one of the preceding claims, characterized in that the two levers (33,35) of the toggle joint (34) are telescopic and that each lever comprises a stack of elastic washers (38), which urge the lever in extension . Pince selon l'une quelconque des revendications précédentes, caractérisée en ce que l'extrémité inférieure de la tige rotative (29) porte une manivelle inférieure (30) articulée au mors mobile (26) pour transformer le mouvement de rotation de la tige (29) en un mouvement de coulissement du mors.Pliers according to any one of the preceding claims, characterized in that the lower end of the rotary rod (29) carries a lower crank (30) articulated to the movable jaw (26) to transform the rotational movement of the rod (29 ) in a sliding movement of the jaw. Pince selon l'une quelconque des revendications précédentes, caractérisée en ce que ladite branche horizontale (24) est conformée en mors fixe (25) et agencée en glissière et que le mors mobile (26) est conformé en coulisseau (28) guidé par ladite glissière.Pliers according to any one of the preceding claims, characterized in that said horizontal branch (24) is shaped as a fixed jaw (25) and arranged as a slide and that the movable jaw (26) is shaped as a slide (28) guided by said slide. Pince selon la revendication 9, caractérisée en ce qu'elle comporte une manivelle inférieure (30) dont l'une des extrémités est clavetée sur la tige rigide (29) et dont l'extrémité opposée est articulée sur un tourillon (32) porté par le coulisseau (28).Pliers according to claim 9, characterized in that it comprises a lower crank (30) one of the ends of which is keyed onto the rigid rod (29) and the opposite end of which is articulated on a pin (32) carried by the slide (28).
EP95410034A 1994-04-22 1995-04-13 Detachable grip for a vehicle towed by cable Expired - Lifetime EP0678432B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9405120A FR2719012B1 (en) 1994-04-22 1994-04-22 Detachable clamp of a vehicle towed by cable.
FR9405120 1994-04-22

Publications (2)

Publication Number Publication Date
EP0678432A1 true EP0678432A1 (en) 1995-10-25
EP0678432B1 EP0678432B1 (en) 1998-03-04

Family

ID=9462591

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95410034A Expired - Lifetime EP0678432B1 (en) 1994-04-22 1995-04-13 Detachable grip for a vehicle towed by cable

Country Status (7)

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US (1) US5520116A (en)
EP (1) EP0678432B1 (en)
JP (1) JP3665106B2 (en)
AT (1) ATE163603T1 (en)
CA (1) CA2146105C (en)
ES (1) ES2116054T3 (en)
FR (1) FR2719012B1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2758116B1 (en) 1997-01-06 1999-02-05 Pomagalski Sa DETACHABLE CLAMP OF A TRANSPORTATION SYSTEM WITH A TRACTOR CABLE
WO2000056376A1 (en) 1999-03-25 2000-09-28 Metabolix, Inc. Medical devices and applications of polyhydroxyalkanoate polymers
IT1308895B1 (en) * 1999-05-11 2002-01-11 Impero Automazioni S P A FLEXIBLE MODULAR LOAD MANAGEMENT SYSTEM ALONG THE ROUTE, IN ROPE INSTALLATIONS, FOR AERIAL TROLLEY MOVEMENT
AU2003301617A1 (en) 2002-05-10 2004-05-13 Metabolix, Inc. Bioabsorbable polymer containing 2-hdroxyacid monomers
DE10075400T8 (en) 2002-09-12 2013-04-25 Metabolix, Inc. Polyhydroxyalkanoate production by coenzyme a-dependent aldehyde dehydrogenase pathway
US8573133B2 (en) * 2009-09-22 2013-11-05 Pomagalski Passenger transport installation comprising independent vehicles travelling on tracks and hauled by cables, and method for transporting passengers

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Publication number Priority date Publication date Assignee Title
US2120066A (en) * 1937-03-24 1938-06-07 Edmund F Dwight Cable-gripper
DE1237161B (en) * 1959-06-29 1967-03-23 Pohlig Heckel Bleichert Clamping and releasing device for cable cars driven by means of two pull ropes, Schraeg-aufege u. like
US3541962A (en) * 1968-02-29 1970-11-24 William H Avery Urban transportation system
FR2337067A1 (en) * 1975-12-31 1977-07-29 Poma 2000 Sa OWN SITE TRANSPORT INSTALLATION WITH TRIPLE CLAMP FOR COUPLING VEHICLES TO TRACTOR CABLES
WO1981002275A1 (en) * 1980-02-11 1981-08-20 Kermadec J Huon Automatic transport system with cable drawn passive vehicles

Family Cites Families (6)

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Publication number Priority date Publication date Assignee Title
US813040A (en) * 1905-08-03 1906-02-20 Walter B Chalfant Cable-grip for cars.
NL16210C (en) * 1924-11-08
CH297639A (en) * 1951-12-12 1954-03-31 Ingold Hans Device for storing goods such as books, files or other goods.
US3435782A (en) * 1967-06-01 1969-04-01 Felix I Stewart Cable gripping coupler
US3871303A (en) * 1974-02-25 1975-03-18 Goodyear Tire & Rubber Transportation system
US4403552A (en) * 1981-12-09 1983-09-13 Kunczynski Jan K Detachable grip assembly and method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2120066A (en) * 1937-03-24 1938-06-07 Edmund F Dwight Cable-gripper
DE1237161B (en) * 1959-06-29 1967-03-23 Pohlig Heckel Bleichert Clamping and releasing device for cable cars driven by means of two pull ropes, Schraeg-aufege u. like
US3541962A (en) * 1968-02-29 1970-11-24 William H Avery Urban transportation system
FR2337067A1 (en) * 1975-12-31 1977-07-29 Poma 2000 Sa OWN SITE TRANSPORT INSTALLATION WITH TRIPLE CLAMP FOR COUPLING VEHICLES TO TRACTOR CABLES
WO1981002275A1 (en) * 1980-02-11 1981-08-20 Kermadec J Huon Automatic transport system with cable drawn passive vehicles

Also Published As

Publication number Publication date
FR2719012A1 (en) 1995-10-27
CA2146105C (en) 2005-12-06
FR2719012B1 (en) 1996-07-12
ES2116054T3 (en) 1998-07-01
ATE163603T1 (en) 1998-03-15
EP0678432B1 (en) 1998-03-04
JP3665106B2 (en) 2005-06-29
CA2146105A1 (en) 1995-10-23
US5520116A (en) 1996-05-28
JPH0840256A (en) 1996-02-13

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