EP0138643A1 - Control device for railway hopper car trapdoors, hoppers fitted therewith - Google Patents

Control device for railway hopper car trapdoors, hoppers fitted therewith Download PDF

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Publication number
EP0138643A1
EP0138643A1 EP84401689A EP84401689A EP0138643A1 EP 0138643 A1 EP0138643 A1 EP 0138643A1 EP 84401689 A EP84401689 A EP 84401689A EP 84401689 A EP84401689 A EP 84401689A EP 0138643 A1 EP0138643 A1 EP 0138643A1
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EP
European Patent Office
Prior art keywords
hatch
hand
axis
lever
articulated
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
EP84401689A
Other languages
German (de)
French (fr)
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EP0138643B1 (en
Inventor
Christian Vilette
Pierre Dumoulin
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.)
Arbel Industrie SA
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Arbel Industrie SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Arbel Industrie SA filed Critical Arbel Industrie SA
Publication of EP0138643A1 publication Critical patent/EP0138643A1/en
Application granted granted Critical
Publication of EP0138643B1 publication Critical patent/EP0138643B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D7/00—Hopper cars
    • B61D7/14—Adaptations of hopper elements to railways
    • B61D7/16—Closure elements for discharge openings
    • B61D7/24—Opening or closing means
    • B61D7/30—Opening or closing means controlled by means external to cars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D7/00—Hopper cars
    • B61D7/14—Adaptations of hopper elements to railways
    • B61D7/16—Closure elements for discharge openings
    • B61D7/24—Opening or closing means
    • B61D7/28—Opening or closing means hydraulic or pneumatic

Definitions

  • the invention relates to a device for controlling the hopper hatches of wagons and to the hopper wagons and wagons which are provided with them.
  • the device object of the invention, is intended to control the hatches only during these latter stages of controlling their closure.
  • a result which the invention aims to obtain is a device for controlling hatch hopper doors of wagons, during the phases of controlling the closing of said hatches, which can be used for controlling a single hatch and therefore does not bind maintaining the doors to a synchronization of the movements of at least two doors.
  • Another result which the invention aims to obtain is such a device in which the means for holding the doors does not risk releasing the doors in the event of an impact.
  • the means for holding the hatch in the open position is chosen of a type such that its holding action can be annihilated by an oscillation d 'a part, and that on the one hand, to release the hatches, it makes this oscillation of the part necessary while, on the other hand, when it returns to the holding position, it guides the return of said part by waiting position for the subsequent release command.
  • the wagon 1 comprises, at a certain distance above the rails 2, a chassis 3 carrying at least one hopper 4 (fig 1 and 2) whose base has at least one mouth 5 it even provided with at least one hatch 6 articulated around an axis 7 fixed in space relative to the chassis 3.
  • This system 8 consists for example of an oleopneumatic accumulator 8, consisting of a hydraulic cylinder 9 whose end of the rod 10 of the piston is articulated around an axis 11 carried by a lever such as an ear 12 secured to the hatch 6 while the base of the cylinder 13 is articulated around an axis 14 carried by a lug 15 secured to the chassis 3.
  • an oleopneumatic accumulator 8 consisting of a hydraulic cylinder 9 whose end of the rod 10 of the piston is articulated around an axis 11 carried by a lever such as an ear 12 secured to the hatch 6 while the base of the cylinder 13 is articulated around an axis 14 carried by a lug 15 secured to the chassis 3.
  • a closed reservoir 16 At the base of the cylinder is connected a closed reservoir 16, which a flexible membrane 17 splits into two parts 18 and 19.
  • One 18 of these two parts is connected to the cylinder 13 of the jack 9, while the other 19 is filled with compressed air.
  • the device for controlling the opening of the hatch releases the latter and the said hatch opens, its ear 12 then pushes back the rod 10 of the piston which, penetrating into the cylinder 13, drives out the oil from the jack towards the part 18 of the accumulator to which the cylinder 13 is connected. Even incompressible, the oil then compresses the air of the other part more strongly 19.
  • the means 20 for holding the hatch 6 in the open position is chosen of a type such that its holding action can be annihilated by an oscillation of a part 22 and that, on the one hand , to release the hatch, it makes this oscillation of the part 22 necessary, while, on the other hand, when it returns to the holding position it guides the return of this part 22 to the waiting position for the subsequent command of release.
  • This part 22 which is part of the means 21 for releasing the hatches consists, for example, of one end of one of the arms of a pendulum, 23 of which the end of another arm is grasped by the axis 24 of one end. a rod 25 while by its part towards which the two arms converge, this pendulum is articulated around an axis 26 fixed in space with respect to the chassis and, for example carried by a tab 27 welded to this chassis.
  • the rod 25 forms with the arm a non-flat angle, of preferably between thirty and one hundred and fifty degrees.
  • the rod 25 is grasped by an axis 28 carried by a lever 29 articulated around an axis 30 fixed in space relative to the chassis and for example carried by a lug 31 welded to this chassis.
  • the rod 25 and the lever 29 are in maximum elongation and, in the other direction, the compressive stress received from the balance being devoid of transverse component capable of causing the rod and the lever to oscillate, it will remain without effect on the articulated assembly formed by the lever 29 and the rod 25, located one after the other. Given the particular type of holding means 20 which has been chosen, the holding of the hatch is therefore guaranteed.
  • a pendulum 32 is provided and, on the other hand, on the path of the wagon is fixed relative to the track a stop 33 which is situated at a height such that it will not be struck by the pendulum until the hatch is in the open position.
  • the pendulum 32 is associated with the lever 29 so that, when the hatch 6 is kept in the open position, the said pendulum 32 is at least substantially vertical.
  • the means 20 for holding the hatch can be of any known type such that its action can be annihilated by the oscillation of the part 22 and that, on the one hand, to release the hatch, it makes this oscillation of the part 22 necessary, while, on the other hand, when it returns to the holding position, it guides the return of this part 22 to the waiting position for the subsequent release command .
  • This connecting rod must of course be incompressible to allow it to resist if necessary the action of the member 8 for controlling the closure.
  • this connecting rod 34 may consist, in particular, of a tubular body 37 closed at one end by a base 38 and provided at the other end with two ears 39 forming a joint yoke.
  • the base 38 is pierced in its axis with a cylindrical hole 40 to allow the sliding of a rod 41 completed, on the external side, by a yoke 42 and, on the other side, by a threaded part 43.
  • a spring 44 is mounted inside the body around the rod carrying the yoke. This spring 44 is prestressed by means of a nut 45 and a ring 46 which produces a guide piece inside the tubular body 37.
  • the device comprises means ensuring that the release of the hatch cannot be obtained only by oscillation of the part 22 in one direction, as is the case, for example, with the control of the balance 23 exposed above.
  • the means 20 for holding the hatch 6 in the open position comprises, linked in rotation with the hatch 6, a ramp 49 (FIGS. 7 and 8) for example carried by the fields of the ear 12 on which acts the member 8 for controlling the opening of the hatch.
  • This ramp 49 guides the end of the part 22, the oscillation of which controls the release of the hatch.
  • a roller 50 is fixed to the end of said part 22.
  • a spring 51 constantly keeps the roller 50 in abutment on the ramp 49 which in turn has a notch 52 in which the roller 50 falls when the hatch 6 is in the open position.
  • the part 22 thus supported in the bottom of the notch then counteracts, if necessary, the action of the control member 8 of the closing of the hatch 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Superstructure Of Vehicle (AREA)
  • Catching Or Destruction (AREA)

Abstract

1. A control device for the trapdoor (6) of a hopper (4) of a car during the stages of the operating cycle of the trapdoor, i.e. the control of the closure of the trapdoor, the said cycle more particularly comprising the stages for maintaining the trapdoor (6) in the open position, then for releasing the trapdoor and for controlling the closure, the said control device comprising a means (20) for maintaining the trapdoor in the open position, a means (21) for releasing the said trapdoor, and a means (8) for controlling the closure of the said trapdoor, which is pivotable about an axis (7), which is fixed relative to the chassis (3) of the car, the said control device being characterised in that the means (20) for maintaining the trapdoor (6) in the open position is selected such that its maintaining action may be cancelled by means of a single oscillation of a part (22), and it makes the oscillation of the said part (22) necessary for the release of the trapdoor (6), whereas, when it returns into the position for maintaining the trapdoor open, the said means guides the said part (22) back into the position in readiness for the subsequent release command.

Description

L'invention se rapporte à un dispositif de commande des trappes de trémies de wagons et aux trémies de wagons et wagons qui en sont pourvus.The invention relates to a device for controlling the hopper hatches of wagons and to the hopper wagons and wagons which are provided with them.

Il trouve plus particulièrement, mais non exclusivement application dans les wagons équipés d'un système, tel un accumulateur oléo-pneumatique, qui, pendant l'ouverture des trappes emmagasine l'énergie produite par la charge appuyant sur les trappes pour, ensuite, pouvoir restituer cette énergie qui est alors amplement suffisante pour assurer la fermeture des trappes privées de leur charge.It finds more particularly, but not exclusively, application in wagons equipped with a system, such as an oleopneumatic accumulator, which, during the opening of the hatches stores the energy produced by the load pressing on the hatches in order, then, to be able restore this energy which is then amply sufficient to ensure the closure of the hatches deprived of their charge.

Le cycle complet de fonctionnement des trappes comprend :

  • - d'une part des phases dites de contrôle de l'ouverture dont notamment celles de maintien des trappes en position fermée puis de libération des trappes et de commande de leur ouverture et,
  • - d'autre part des phases dites de contrôle de leur fermeture dont celles de maintien des trappes en position ouverte puis de libération des trappes et de commande de leur fermeture.
The complete hatch operating cycle includes:
  • on the one hand, the so-called opening control phases, in particular those of keeping the doors in the closed position and then of releasing the doors and controlling their opening, and
  • - On the other hand, the so-called control phases for closing them, including those for keeping the doors in the open position and then for releasing the doors and controlling their closing.

Le dispositif, objet de l'invention, ne vise à commander les trappes que pendant ces dernières phases de contrôle de leur fermeture.The device, object of the invention, is intended to control the hatches only during these latter stages of controlling their closure.

On connaît déjà des dispositifs de contrôle de la fermeture de trémies (FR-A-1303594).Devices for controlling the closure of hoppers are already known (FR-A-1303594).

Dans ces dispositifs connus, le martien en position ouverte des trappes, dès qu'elles parviennent au terme de leur manoeuvre en ouverture, est assuré par engagement, dans une gache portée par une trappe, d'un crochet articulé sur une autre trappe.In these known devices, the Martian in the open position of the hatches, as soon as they reach the end of their opening maneuver, is ensured by engagement, in a keeper carried by a hatch, of a hook articulated on another hatch.

Toutefois :

  • - d'une part, cela nécessite que la trémie ait au moins deux trappes succeptibles d'être commandées en même temps, tant en ouverture qu'en fermeture et,
  • - d'autre part, cet accrochage reste incertain du fait que, notamment les deux trappes peuvent ne pas parvenir exactement en même temps au terme de leur manoeuvre d'ouverture.
However:
  • on the one hand, this requires that the hopper has at least two hatches capable of being controlled at the same time, both in opening and in closing and,
  • - On the other hand, this attachment remains uncertain because, in particular the two hatches may not reach exactly the same time at the end of their opening operation.

Par ailleurs, un simple choc sur le crochet pourrait le dégager de sa gâche et commander la fermeture des trappes.Furthermore, a simple impact on the hook could release it from its keeper and cause the hatches to close.

Un résultat que l'invention vise à obtenir est un dispositif de commande de trappes de trémies de wagons, pendant les phases de contrôle de la fermeture des dites trappes, qui peut être utilisé pour la commande d'une seule trappe et ne lie donc pas le maintien des trappes à une synchronisation des mouvements d'au moins deux trappes.A result which the invention aims to obtain is a device for controlling hatch hopper doors of wagons, during the phases of controlling the closing of said hatches, which can be used for controlling a single hatch and therefore does not bind maintaining the doors to a synchronization of the movements of at least two doors.

Un autre résultat que l'invention vise à obtenir, est un tel dispositif dans lequel le moyen de maintien des trappes ne risque pas de libérer les trappes en cas de choc.Another result which the invention aims to obtain is such a device in which the means for holding the doors does not risk releasing the doors in the event of an impact.

A cet effet, elle a pour objet un dispositif du type cité plus haut, notamment caractérisé en ce que le moyen de maintien de la trappe en position ouverte est choisi d'un type tel que son action de maintien peut être annihilé par une oscillation d'une pièce, et que d'une part, pour libérer les trappes, il rend nécessaire cette oscillation de la pièce alors que, d'autre part, lors de son retour en position de maintien, il guide le retour de la dite pièce en position d'attente de l'ultérieure commande de libération.To this end, it relates to a device of the type mentioned above, in particular characterized in that the means for holding the hatch in the open position is chosen of a type such that its holding action can be annihilated by an oscillation d 'a part, and that on the one hand, to release the hatches, it makes this oscillation of the part necessary while, on the other hand, when it returns to the holding position, it guides the return of said part by waiting position for the subsequent release command.

Elle à également pour objet les trémies de wagons et les wagons qui sont pourvus d'au moins un tel dispositif.It also relates to the hopper wagons and wagons which are provided with at least one such device.

Elle sera bien comprise, à l'aide de la description ci- après faite à titre d'exemple non limitatif en regard du dessin ci-annexé qui représente schématiquement :

  • - Fig 1 : vu en position trappe fermée, le dispositif dans lequel le moyen de maintien est symbolisé par une surface délimitée par des traits mixtes.
  • - Fig 2 : Ce dispositif vu en position trappe ouverte.
  • - Fig 3 et 4 : le dispositif dans les deux mêmes positions mais dans lequel a été montrée une forme préférée de réalisation du moyen de maintien symbolisé en figure 1 et 2.
  • - Fig 5 : une coupe selon V-V de la figure 3.
  • - Fig 6 : vu à plus grande échelle un détail de la figure 4.
  • - Fig 7 et 8 : le dispositif en position trappe ouverte et trappe fermée dans une variante de réalisation du moyen de maintien.
It will be clearly understood, with the aid of the description below given by way of nonlimiting example with regard to the attached drawing which schematically represents:
  • - Fig 1: seen in the closed hatch position, the device in which the holding means is symbolized by a surface delimited by dashed lines.
  • - Fig 2: This device seen in the open hatch position.
  • - Fig 3 and 4: the device in the same two positions but in which a preferred embodiment of the holding means shown in FIG. 1 and 2 has been shown.
  • - Fig 5: a section along VV of Figure 3.
  • - Fig 6: seen on a larger scale a detail of Figure 4.
  • - Fig 7 and 8: the device in the open hatch and closed hatch position in an alternative embodiment of the holding means.

En se reportant au dessin, on voit que le wagon 1 comprend, à une certaine distance au-dessus des rails 2, un chassis 3 portant au moins une trémie 4 (fig 1 et 2) dont la base présente au moins une bouche 5 elle-même pourvue d'au moins une trappe 6 articulée autour d'un axe 7 fixe dans l'espace par rapport au chassis 3.Referring to the drawing, it can be seen that the wagon 1 comprises, at a certain distance above the rails 2, a chassis 3 carrying at least one hopper 4 (fig 1 and 2) whose base has at least one mouth 5 it even provided with at least one hatch 6 articulated around an axis 7 fixed in space relative to the chassis 3.

Cette trappe 6 est pourvue d'un dispositif de tout type connu (non représenté) de contrôle de son ouverture et comprenant par exemple :

  • - tant un moyen de maintien de la trappe en position fermée,
  • - qu'un moyen en vue de la libérer de manière qu'elle puisse alors s'ouvrir, de préférence sous la seule poussée P de la charge contenue dans la trémie.
This hatch 6 is provided with a device of any known type (not shown) for controlling its opening and comprising for example:
  • - as a means of holding the hatch in the closed position,
  • - a means for releasing it so that it can then open, preferably under the single push P of the load contained in the hopper.

Elle pourra avantageusement comprendre un système 8 qui, pendant l'ouverture de la trappe 6, emmagasinera l'énergie produite par la charge P appuyant sur la trappe 6 pour, ensuite, pouvoir restituer cette énergie qui sera alors amplement suffisante pour assurer la fermeture des trappes qui à ce moment là seront privées de la charge P.It can advantageously include a system 8 which, during the opening of the hatch 6, will store the energy produced by the load P pressing on the hatch 6 so, then, being able to restore this energy which will then be more than sufficient to ensure the closing of the hatches which at that time will be deprived of the charge P.

Ce système 8 consiste par exemple en un accumulateur oléopneumatique 8, constitué d'un vérin hydraulique 9 dont l'extrémité de la tige 10 du piston est articulée autour d'un axe 11 porté par un levier tel une oreille 12 solidaire de la trappe 6 alors que la base du cylindre 13 est articulée autour d'un axe 14 porté par une patte 15 solidaire du chassis 3.This system 8 consists for example of an oleopneumatic accumulator 8, consisting of a hydraulic cylinder 9 whose end of the rod 10 of the piston is articulated around an axis 11 carried by a lever such as an ear 12 secured to the hatch 6 while the base of the cylinder 13 is articulated around an axis 14 carried by a lug 15 secured to the chassis 3.

A la base du cylindre est raccordé un réservoir fermé 16, qu'une membrane souple 17 scinde en deux parties 18 et 19.At the base of the cylinder is connected a closed reservoir 16, which a flexible membrane 17 splits into two parts 18 and 19.

L'une 18 de ces deux parties est raccordée au cylindre 13 du vérin 9, alors que l'autre 19 est remplie d'air comprimé. Lorsque le dispositif de contrôle de l'ouverture de la trappe libère celle-ci et que la dite trappe s'ouvre, son oreille 12 repousse alors la tige 10 du piston qui, en pénétrant dans le cylindre 13, chasse l'huile du vérin vers la partie 18 de l'accumulateur à laquelle le cylindre 13 est raccordé. Elle même incompressible, l'huile comprime alors plus fortement l'air de l'autre partie 19.One 18 of these two parts is connected to the cylinder 13 of the jack 9, while the other 19 is filled with compressed air. When the device for controlling the opening of the hatch releases the latter and the said hatch opens, its ear 12 then pushes back the rod 10 of the piston which, penetrating into the cylinder 13, drives out the oil from the jack towards the part 18 of the accumulator to which the cylinder 13 is connected. Even incompressible, the oil then compresses the air of the other part more strongly 19.

La trappe comprend encore un dispositif de contrôle de sa fermeture composé :

  • - tant d'un moyen 20 de maintien de la trappe 6 en position ouverte après évacuation de la charge,
  • - que d'un moyen 21 libérant cette trappe pour pouvoir en commander la fermeture.
The hatch also includes a device for controlling its closure composed of:
  • - as many means 20 for holding the hatch 6 in the open position after discharge of the load,
  • - That a means 21 releasing this hatch to be able to control the closing.

Lorsque la charge P n'agit plus sur la trappe 6 et que le moyen 21 la libéré de l'action du moyen de maintien 20 que comprend le dispositif de contrôle de sa fermeture, la pression de l'air comprimé chasse l'huile dans le cylindre où elle repousse le piston dont la tige 10, agit sur l'oreille 12 pour refermer la trappe 6.When the load P no longer acts on the hatch 6 and the means 21 released from the action of the holding means 20 which comprises the device for controlling its closure, the pressure of the compressed air drives the oil into the cylinder where it pushes back the piston whose rod 10 acts on the ear 12 to close the hatch 6.

Selon une caractéristique de l'invention, le moyen 20 de maintien de la trappe 6 en position ouverte est choisi d'un type tel que son action de maintien peut être annihilée par une oscillation d'une pièce 22 et que, d'une part, pour libérer la trappe, il rend nécessaire cette oscillation de la pièce 22, alors que, d'autre part, lors de son retour en position de maintien il guide le retour de cette pièce 22 en position d'attente de l'ultérieure commande de libération.According to a characteristic of the invention, the means 20 for holding the hatch 6 in the open position is chosen of a type such that its holding action can be annihilated by an oscillation of a part 22 and that, on the one hand , to release the hatch, it makes this oscillation of the part 22 necessary, while, on the other hand, when it returns to the holding position it guides the return of this part 22 to the waiting position for the subsequent command of release.

Cette pièce 22 qui fait partie du moyen 21 de libération des trappes consiste par exemple en une extrémité d'un des bras d'un balancier, 23 dont l'extrémité d'un autre bras est saisie par l'axe 24 d'une extrémité d'une tringle 25 alors que par sa partie vers laquelle convergent les deux bras ce balancier est articulé autour d'un axe 26 fixe dans l'espace par rapport au chassis et, par exemple porté par une patte 27 soudée sur ce châssis.This part 22 which is part of the means 21 for releasing the hatches consists, for example, of one end of one of the arms of a pendulum, 23 of which the end of another arm is grasped by the axis 24 of one end. a rod 25 while by its part towards which the two arms converge, this pendulum is articulated around an axis 26 fixed in space with respect to the chassis and, for example carried by a tab 27 welded to this chassis.

La tringle 25 forme avec le bras un angle non plat, de préférence compris entre trente et cent cinquante degrés.The rod 25 forms with the arm a non-flat angle, of preferably between thirty and one hundred and fifty degrees.

Par son extrémité opposée à celle associée au balancier, la tringle 25 est saisie par un axe 28 porté par un levier 29 articulé autour d'un axe 30 fixe dans l'espace par rapport au chassis et par exemple porté par une patte 31 soudée sur ce chassis.By its end opposite to that associated with the balance, the rod 25 is grasped by an axis 28 carried by a lever 29 articulated around an axis 30 fixed in space relative to the chassis and for example carried by a lug 31 welded to this chassis.

Selon une caractéristique de l'invention, lorsque le moyen de maintien 20 est en position de maintien de la trappe 6 (fig 2), la distance entre :

  • - d'une part, l'axe 24 par lequel l'extrémité de la tringle 25 est articulée sur le bras du balancier 23 et,
  • - d'autre part l'axe 30 par lequel le levier 29 est articulé sur la patte 31 du chassis,
According to a characteristic of the invention, when the holding means 20 is in the holding position of the hatch 6 (FIG. 2), the distance between:
  • on the one hand, the axis 24 by which the end of the rod 25 is articulated on the arm of the balance 23 and,
  • on the other hand the axis 30 by which the lever 29 is articulated on the lug 31 of the chassis,

est égale à la somme des distances entre :

  • - d'une part, les axes 24 et 28 situés chacun à l'une des extrémités de la tringle et,
  • - d'autre part, les axes 28 et 30 d'articulation du levier 29 l'un avec la tringle 25, l'autre sur la patte 31.
is equal to the sum of the distances between:
  • on the one hand, the axes 24 and 28 each located at one of the ends of the rod and,
  • - on the other hand, the axes 28 and 30 of articulation of the lever 29, one with the rod 25, the other on the lug 31.

De ce fait, lorsque le moyen de maintien 20 est dans cette position et retient donc la trappe 6, les trois axes 24, 28 et 30 ci-dessus côtés sont alignés.Therefore, when the holding means 20 is in this position and therefore retains the hatch 6, the three axes 24, 28 and 30 above sides are aligned.

Avec ces trois axes ainsi alignés, le balancier 23 est alors parfaitement immobilisé en rotation et même un choc sur lui-même ou sur le moyen de maintien 20 ne parviendra pas à le déplacer.With these three axes thus aligned, the balance 23 is then perfectly immobilized in rotation and even a shock on itself or on the holding means 20 will not manage to move it.

En effet, dans un sens, la tringle 25 et le levier 29 sont en élongation maximale et, dans l'autre sens, la sollicitation en compression reçue du balancier étant dépourvue de composante transversale apte à faire osciller la tringle et le levier, elle restera sans effet sur l'ensemble articulé formé du levier 29 et de la tringle 25, situés à la suite l'un de l'autre. Compte tenu du type particulier du moyen de maintien 20 qui a été choisi, le maintien de la trappe est donc garanti.Indeed, in one direction, the rod 25 and the lever 29 are in maximum elongation and, in the other direction, the compressive stress received from the balance being devoid of transverse component capable of causing the rod and the lever to oscillate, it will remain without effect on the articulated assembly formed by the lever 29 and the rod 25, located one after the other. Given the particular type of holding means 20 which has been chosen, the holding of the hatch is therefore guaranteed.

Par contre, une oscillation dans un sens ou dans un autre, du levier 29 provoque évidemment une traction sur la tringle 25 qui, étant articulée sur l'un des bras du balancier 23, abaisse ce bras en faisant osciller l'autre bras, et donc la dite pièce 22, dans le sens convenable pour annihiler l'action du moyen 20 de maintien de la trappe.On the other hand, an oscillation in one direction or another, of the lever 29 obviously causes traction on the rod 25 which, being articulated on one of the arms of the balance 23, lowers this arm by making the other arm oscillate, and so said part 22, in the proper direction to annihilate the action of the means 20 holding the hatch.

Afin de commander automatiquement l'oscillation du levier 29 et donc la libération de la trappe 6 en un point prédéterminé du parcours du wagon, d'une part, solidaire du mouvement du levier 29 est prévu un pendule 32 et, d'autre part, sur le parcours du wagon est fixé par rapport à la voie une butée 33 qui est située à une hauteur telle qu'elle ne sera heurtée par le pendule que lorsque la trappe sera en position ouverte.In order to automatically control the oscillation of the lever 29 and therefore the release of the hatch 6 at a predetermined point on the path of the wagon, on the one hand, integral with the movement of the lever 29, a pendulum 32 is provided and, on the other hand, on the path of the wagon is fixed relative to the track a stop 33 which is situated at a height such that it will not be struck by the pendulum until the hatch is in the open position.

Pour pouvoir commander cette oscillation du levier 29 dans les deux sens de déplancement du wagon le pendule 32 est associé au levier 29 de manière telle que, lorsque la trappe 6 est maintenue en position ouverte, le dit pendule 32 est au moins sensiblement vertical.To be able to control this oscillation of the lever 29 in the two directions of deployment of the wagon the pendulum 32 is associated with the lever 29 so that, when the hatch 6 is kept in the open position, the said pendulum 32 is at least substantially vertical.

En ce qui concerne le moyen 20 de maintien de la trappe, comme indiqué plus haut, il peut être de tout type connu tel que son action peut être annihilée par l'oscillation de la pièce 22 et que, d'une part, pour libérer la trappe, il rend nécessaire cette oscillation de la pièce 22, alors que, d'autre part, lors de son retour en position de maintien, il guide le retour de cette pièce 22 en position d'attente de l'ultérieure commande de libération.As regards the means 20 for holding the hatch, as indicated above, it can be of any known type such that its action can be annihilated by the oscillation of the part 22 and that, on the one hand, to release the hatch, it makes this oscillation of the part 22 necessary, while, on the other hand, when it returns to the holding position, it guides the return of this part 22 to the waiting position for the subsequent release command .

Dans un mode préféré de réalisation ce moyen 20 de maintien comprend :

  • - d'une part, lié en rotation avec la trappe, un levier 12, tel par exemple celui sur lequel agit l'organe 8 de commande de la fermeture de la trappe et,
  • - d'autre part, une bielle 34 pourvue à chacune de ses extrémité d'un axe 35, 36.
In a preferred embodiment, this holding means comprises:
  • on the one hand, linked in rotation with the hatch, a lever 12, such as for example the one on which the member 8 controls the closing of the hatch and,
  • - on the other hand, a connecting rod 34 provided at each of its ends with an axis 35, 36.

Par ces axes 35, 36, elle est articulée :

  • - d'une part, sur la pièce 22 dont l'oscillation autour d'un axe 26, qui est fixe dans l'espace par rapport au chassis 3, commande la libération de la trappe et,
  • - d'autre part, sur le levier 12 de la trappe 6.
By these axes 35, 36, it is articulated:
  • on the one hand, on the part 22 whose oscillation around an axis 26, which is fixed in space relative to the frame 3, controls the release of the hatch and,
  • - on the other hand, on the lever 12 of the hatch 6.

Selon une caractéristique de l'invention, lorsque le moyen de maintien 20 est en position où il maintient effectivement la trappe 6 en position ouverte (Fig 4), la distance entre :

  • ÷ d'une part l'axe 36 par lequel la bielle 34 est articulée sur le levier 12 de la trappe 6 et,
  • - d'autre part l'axe 26 par lequel la pièce 22 est articulée autour de l'axe 26 fixe dans l'espace par rapport au chassis 3, est égale à la somme des distances :
  • - d'une part, entre les axes 35, 36 situés chacun à l'une des extrémités de la bielle 34 et,
  • - d'autre part, entre l'axe 36 par lequel la pièce 22 est articulée sur la bielle 34 et l'axe 26, fixe dans l'espace par rapport au chassis 3 et autour duquel oscille la pièce 22.
According to a characteristic of the invention, when the holding means 20 is in the position where it effectively maintains the hatch 6 in the open position (FIG. 4), the distance between:
  • ÷ on the one hand the axis 36 by which the connecting rod 34 is articulated on the lever 12 of the hatch 6 and,
  • - on the other hand, the axis 26 by which the part 22 is articulated around the axis 26 fixed in space relative to the chassis 3, is equal to the sum of the distances:
  • on the one hand, between the axes 35, 36 each located at one of the ends of the connecting rod 34 and,
  • - on the other hand, between the axis 36 by which the part 22 is articulated on the connecting rod 34 and the axis 26, fixed in space relative to the frame 3 and around which the part 22 oscillates.

De ce fait, lorsque le moyen de maintien 20 est dans cette position et retient donc effectivement la trappe 6, les trois axes 35, 36 et 26 qui viennent d'être côtés sont alignés.Therefore, when the holding means 20 is in this position and therefore effectively retains the hatch 6, the three axes 35, 36 and 26 which have just been sides are aligned.

Avec ces trois axes ainsi alignés, le levier 12 et avec lui la trappe 6 sont parfaitement immobilisés en rotation.With these three axes thus aligned, the lever 12 and with it the hatch 6 are perfectly immobilized in rotation.

Cette bielle doit bien entendu être incompressible pour lui permettre de résister si besoin à l'action de l'organe 8 de commande de la fermeture.This connecting rod must of course be incompressible to allow it to resist if necessary the action of the member 8 for controlling the closure.

Par contre, elle peut n'être incompressible qu'à partir d'un certain entre axe afin d'être légérement extensible notamment :

  • - de manière à absorber tout supplément de course de son axe 35 d'articulation sur le levier 12, par exemple consécutivement à de l'usure ou à des déformations et,
  • - d'autre part, de manière à pouvoir être mise en précontrainte d'extension afin, à l'inverse d'avoir la certitude de pouvoir aligner les axes 35, 36 et 26 précités.
On the other hand, it may be incompressible only from a certain distance between axes in order to be slightly extensible, in particular:
  • - so as to absorb any additional travel of its hinge pin 35 on the lever 12, for example following wear or deformation and,
  • - on the other hand, so as to be able to be prestressed for extension so, conversely, to have the certainty of being able to align the axes 35, 36 and 26 above.

A cet effet, cette bielle 34 pourra être constituée, notamment, d'un corps tubulaire 37 obturé à une extrémité par un culot 38 et pourvu à l'autre extrémité de deux oreilles 39 formant une chape d'articulation. Le culot 38 est percé en son axe d'un trou cylindrique 40 pour permettre le coulissement d'une tige 41 terminée, du côté externe, par une chape 42 et, de l'autre côté, par une partie filetée 43.To this end, this connecting rod 34 may consist, in particular, of a tubular body 37 closed at one end by a base 38 and provided at the other end with two ears 39 forming a joint yoke. The base 38 is pierced in its axis with a cylindrical hole 40 to allow the sliding of a rod 41 completed, on the external side, by a yoke 42 and, on the other side, by a threaded part 43.

Un ressort 44 est monté à l'intérieur du corps autour de la tige portant la chape. Ce ressort 44 est précontraint par l'intermédiaire d'un écrou 45 et d'une bague 46 qui réalise une pièce de guidage à l'intérieur du corps tubulaire 37.A spring 44 is mounted inside the body around the rod carrying the yoke. This spring 44 is prestressed by means of a nut 45 and a ring 46 which produces a guide piece inside the tubular body 37.

Une rondelle 47 calée en translation sur la tige 41 et venant en butée contre le culot 38, détermine la longueur à partir de laquelle la bielle 34 ainsi constituée est incompressible.A washer 47 wedged in translation on the rod 41 and abutting against the base 38, determines the length from which the rod 34 thus formed is incompressible.

Dans un mode préféré de réalisation, à partir de la position où l'ensemble assure le maintien de la trappe c'est à dire dans une position dite de point mort, le dispositif comprend des moyens faisant que la libération de la trappe ne peut être obtenue que par oscillation de la pièce 22 dans une seule direction, comme c'est le cas, par exemple, avec la commande du balancier 23 exposée plus haut.In a preferred embodiment, from the position where the assembly ensures the maintenance of the hatch, that is to say in a so-called neutral position, the device comprises means ensuring that the release of the hatch cannot be obtained only by oscillation of the part 22 in one direction, as is the case, for example, with the control of the balance 23 exposed above.

Selon une caractéristique de l'invention le logement 48, ménagé dans la pièce 22 pour recevoir l'axe 36 d'articulation de la bielle 34, a une forme oblongue telle que lorsque la bielle 34 et la pièce 22 sont en position de point mort, les centres des extrémités du l'ogement 48 sont situés :

  • - l'un, sur une ligne fictive rejoignant les trois axes 35, 36 et 26 cités plus haut,
  • - l'autre sur le côté de cette ligne qui se trouve à l'opposé de celui vers lequel la pièce 22 peut osciller.
According to a characteristic of the invention, the housing 48, formed in the part 22 for receiving the axis 36 of articulation of the connecting rod 34, has an oblong shape such that when the connecting rod 34 and the part 22 are in neutral position. , the centers of the ends of ogement 48 are located:
  • - one, on a fictitious line joining the three axes 35, 36 and 26 mentioned above,
  • - the other on the side of this line which is opposite to that towards which the part 22 can oscillate.

Dans une variante de réalisation, le moyen 20 de maintien de la trappe 6 en position ouverte comprend, liée en rotation avec la trappe 6, une rampe 49 (fig 7 et 8) par exemple portée par le champs de l'oreille 12 sur laquelle agit l'organe 8 de commande de l'ouverture de la trappe.In an alternative embodiment, the means 20 for holding the hatch 6 in the open position comprises, linked in rotation with the hatch 6, a ramp 49 (FIGS. 7 and 8) for example carried by the fields of the ear 12 on which acts the member 8 for controlling the opening of the hatch.

Cette rampe 49 guide l'extrémité de la pièce 22 dont l'oscillation commande la libération de la trappe.This ramp 49 guides the end of the part 22, the oscillation of which controls the release of the hatch.

A cet effet, un galet 50 est fixé à l'extrémité de la dite pièce 22.To this end, a roller 50 is fixed to the end of said part 22.

Un ressort 51 maintient constamment le galet 50 en appui sur la rampe 49 qui présente quant à elle une encoche 52 dans laquelle le galet 50 tombe lorsque la trappe 6 est en position ouverte. La pièce 22 ainsi appuyée dans le fond de l'encoche contrarie alors, si besoin est, l'action de l'organe de commande 8 de la fermeture de la trappe 6.A spring 51 constantly keeps the roller 50 in abutment on the ramp 49 which in turn has a notch 52 in which the roller 50 falls when the hatch 6 is in the open position. The part 22 thus supported in the bottom of the notch then counteracts, if necessary, the action of the control member 8 of the closing of the hatch 6.

La commande de l'oscillation de la pièce 22 dégage évidemment celle-ci de son encoche et libère alors la trappe.The control of the oscillation of the part 22 obviously releases the latter from its notch and then frees the hatch.

Claims (10)

1. Dispositif de commande de la trappe (6) d'une trémie (4) d'un wagon pendant les phases de son cycle de fonctionnement dites de contrôle de la fermeture de la trappe et comprenant notamment celle de maintien de la trappe (6) en position ouverte puis de libération de la trappe et de commande de la fermeture, lequel dispositif de commande comprend de ce fait un moyen (20) de maintien de la trappe en position ouverte, un moyen (21) de libération de cette trappe et un moyen (8) de commande de la fermeture de la dite trappe, laquelle est articulée autour d'un axe (7) qui est fixe dans l'espace par rapport au chassis (3) du wagon, ce dispositif de commande étant CARACTERISE en ce que le moyen (20) de maintien de la trappe (6) en position ouverte est choisi d'un type tel que son action de maintien est annihilable par une simple oscillation d'une pièce (22) et que, d'une part, pour libérer la trappe (6), il rend nécessaire l'oscillation de cette pièce (22), alors que, d'autre part lors de son retour en position de maintien il guide le retour de cette pièce (22) en position d'attente de l'ultérieure commande de libération.1. Device for controlling the hatch (6) of a hopper (4) of a wagon during the phases of its operating cycle known as controlling the closing of the hatch and comprising in particular that of holding the hatch (6 ) in the open position and then for releasing the hatch and for controlling the closure, which control device therefore comprises means (20) for holding the hatch in the open position, means (21) for releasing this hatch and means (8) for controlling the closing of said hatch, which is articulated around an axis (7) which is fixed in space relative to the chassis (3) of the wagon, this control device being CHARACTERIZED in that the means (20) for holding the hatch (6) in the open position is chosen of a type such that its holding action can be annihilated by a simple oscillation of a part (22) and that, on the one hand , to release the hatch (6), it makes it necessary to oscillate this part (22), while, on the other hand during n return to the holding position it guides the return of this part (22) to the waiting position for the subsequent release command. 2. Dispositif selon la revendication 1 caractérisé : - d'une part, en ce que cette pièce (22), qui fait partie du moyen (21) de libération des trappes, consiste en une extrémité d'un des bras d'un balancier (23) dont l'extrémité d'un autre bras est saisie par l'axe (24) d'une extrémité d'une tringle (25) alors que par sa partie vers laquelle convergent les deux bras, il est articulé autour d'un axe (26) qui est fixe dans l'espace par rapport au chassis (3), et, - d'autre part, en ce que la tringle (25), qui forme avec le bras un angle non plat, compris entre trente et cent cinquante degrés, est par son extrémité opposée à celle associée au balancier (23), saisie par un axe (28) porté par un levier (29) articulé autour d'un autre axe (30) qui est fixe dans l'espace par rapport au chassis (3). 2. Device according to claim 1 characterized: - On the one hand, in that this part (22), which is part of the means (21) for releasing the doors, consists of one end of one of the arms of a pendulum (23), the end of which another arm is gripped by the axis (24) of one end of a rod (25) while by its part towards which the two arms converge, it is articulated around an axis (26) which is fixed in the space relative to the chassis (3), and, - on the other hand, in that the rod (25), which forms with the arm a non-flat angle, between thirty and one hundred and fifty degrees, is by its end opposite to that associated with the balance (23), gripped by a axis (28) carried by a lever (29) articulated around another axis (30) which is fixed in space relative to the chassis (3). 3. Dispositif selon la revendication 2 caractérisé en ce que, lorsque le moyen de maintien (20) est en position de maintien effectif de la trappe (6), la distance entre, d'une part, l'axe (24) par lequel l'extrémité de la tringle (25) est articulée sur le bras du balancier (23) et, d'autre part, l'axe (30) fixe dans l'espace autour duquel le levier (29) est articulé, est égale à la somme des distances : - d'une part, entre les axes (24) et (28) situés chacun à l'une des extrémités de la tringle (25) et, - d'autre part, entre l'axe (28) d'articulation du levier (29) avec la tringle (25) et l'axe (30) fixe dans l'espace et autour duquel s'articule le levier (29). 3. Device according to claim 2 characterized in that, when the holding means (20) is in the effective holding position of the hatch (6), the distance between, on the one hand, the axis ( 2 4) by which the end of the rod (25) is articulated on the arm of the balance (23) and, on the other hand, the axis (30) fixed in the space around which the lever (29) is articulated, is equal to the sum of the distances: - on the one hand, between the axes (24) and (28) each located at one of the ends of the rod (25) and, - on the other hand, between the axis (28) of articulation of the lever (29) with the rod (25) and the axis (30) fixed in space and around which the lever (29) is articulated . 4. Dispositif selon la revendication 2 ou 3 caractérisé en ce que, afin de commander automatiquement l'oscillation du levier (29) et donc la libération de la trappe (6) en un point prédéterminé du parcours du wagon, d'une part, solidaire du mouvement du levier (29) est prévu un pendule (32) et, d'autre part, sur le parcours du wagon est fixé, par rapport à la voie, une butée (33) qui est située à une hauteur telle qu'elle ne sera heurtée par le pendule (32) que lorsque la trappe sera en position ouverte.4. Device according to claim 2 or 3 characterized in that, in order to automatically control the oscillation of the lever (29) and therefore the release of the hatch (6) at a predetermined point in the course of the wagon, on the one hand, integral with the movement of the lever (29) is provided a pendulum (32) and, on the other hand, on the path of the wagon is fixed, relative to the track, a stop (33) which is situated at a height such that it will not be struck by the pendulum (32) until the hatch is in the open position. 5. Dispositif selon la revendication 4 caractérisé en ce que pour pouvoir commander cette oscillation du levier (29) dans les deux sens de déplacement du wagon, le pendule (32) est associé au levier (29) de manière telle que, lorsque la trappe (6) est maintenue en position ouverte, le dit pendule (32) est, au moins sensiblement vertical.5. Device according to claim 4 characterized in that in order to be able to control this oscillation of the lever (29) in the two directions of movement of the wagon, the pendulum (32) is associated with the lever (29) so that, when the hatch (6) is maintained in the open position, the said pendulum (32) is, at least substantially vertical. 6. Dispositif selon l'une quelconque des revendications 1 à 5 caractérisé : - en ce que le moyen (20) de maintien comprend : . d'une part, lié en rotation avec la trappe (6), un levier (12) et, . d'autre part, une bielle (34) pourvue à chacune de ses extrémités d'un axe (35, 36), par lesquels axes, elle est articulée : . d'une part, sur la pièce (22) dont l'oscillation autour,d'un axe (26) fixe dans l'espace par rapport au chassis (3) commande la libération de la trappe et, . d'autre part, sur le levier (12) de la trappe (6), et - en ce que, lorsque le moyen de maintien (20) est en position où il maintient effectivement la trappe (6) en position ouverte, la distance entre, d'une part, l'axe (36) par lequel la bielle (34) est articulée sur le levier (12) de la trappe (6) et, d'autre part, l'axe (26) qui est fixe dans l'espace par rapport au chassis (3) et autour duquel la pièce (22) est articulée, est égale à la somme des distances : . d'une part, entre les axes (35, 36) situés chacun à l'une des extrémités de la bielle (34) et, . d'autre part, entre l'axe (36) par lequel la pièce (22) est articulée sur la bielle (34) et l'axe (36) fixe dans l'espace par rapport au chassis et autour duquel oscille la pièce (22). 6. Device according to any one of claims 1 to 5 characterized: - in that the holding means (20) comprises: . on the one hand, linked in rotation with the hatch (6), a lever (12) and, . on the other hand, a connecting rod (34) provided at each of its ends with an axis (35, 36), by which axes it is articulated: . on the one hand, on the part (22) whose oscillation around, an axis (26) fixed in space relative to the chassis (3) controls the release of the hatch and, . on the other hand, on the lever (12) of the hatch (6), and - in that, when the holding means (20) is in position where it effectively holds the hatch (6) in position open, the distance between, on the one hand, the axis (36) by which the connecting rod (34) is articulated on the lever (12) of the hatch (6) and, on the other hand, the axis (26 ) which is fixed in space relative to the chassis (3) and around which the part (22) is articulated, is equal to the sum of the distances: . on the one hand, between the axes (35, 36) each located at one of the ends of the connecting rod (34) and, . on the other hand, between the axis (36) by which the part (22) is articulated on the connecting rod (34) and the axis (36) fixed in space relative to the chassis and around which the part oscillates ( 22). 7. Dispositif selon la revendication 6 caractérisé en ce que la bielle (34) qui doit bien entendu être incompressible pour contrarier si besoin est l'action de l'organe (8) de commande de la fermeture de la trappe, n'est incompressible qu'à partir d'un certain axe et de ce fait est au moins légèrement extensible.7. Device according to claim 6 characterized in that the connecting rod (34) which must of course be incompressible to counteract if necessary is the action of the member (8) for controlling the closing of the hatch, is incompressible that from a certain axis and therefore is at least slightly extensible. 8. Dispositif selon l'une quelconque des revendications 1 à 5 caractérisé en ce que le moyen (20) de maintien de la trappe (6) en position ouverte comprend, liée en rotation avec la trappe (6) une rampe (49) guidant l'extrémité de la pièce (22) dont l'oscillation commande la libération de la trappe (6) et qui, à cet effet : - d'une part, présente un galet (50) fixé à son extrémité et, - d'autre part, est associé à un organe élastique (51) qui maintient le galet constamment en appui sur la rampe (49) qui présente, quant à elle, une encoche (52) située de manière telle que le galet (50) tombe dedans lorsque la trappe (6) est en position ouverte. 8. Device according to any one of claims 1 to 5 characterized in that the means (20) for holding the hatch (6) in the open position comprises, linked in rotation with the hatch (6) a ramp (49) guiding the end of the part (22) whose oscillation controls the release of the hatch (6) and which, for this purpose: on the one hand, has a roller (50) fixed at its end and, - on the other hand, is associated with an elastic member (51) which keeps the roller constantly resting on the ramp (49) which has, for its part, a notch (52) located in such a way that the roller (50) falls into it when the hatch (6) is in the open position. 9. Trémie de wagon caractérisée en ce qu'elle comprend au moins un dispositif selon l'une quelconque des revendications 1 à 8.9. Wagon hopper, characterized in that it comprises at least one device according to any one of claims 1 to 8. 10. Wagon caractérisé en ce qu'il comprend au moins une trémie selon la revendication 9.10. Wagon characterized in that it comprises at least one hopper according to claim 9.
EP84401689A 1983-09-14 1984-08-20 Control device for railway hopper car trapdoors, hoppers fitted therewith Expired EP0138643B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8314885 1983-09-14
FR8314885A FR2551712B1 (en) 1983-09-14 1983-09-14 DEVICE FOR CONTROLLING THE HATCHES OF WAGONS AND HOPPERS AND WAGONS PROVIDED WITH SUCH A DEVICE

Publications (2)

Publication Number Publication Date
EP0138643A1 true EP0138643A1 (en) 1985-04-24
EP0138643B1 EP0138643B1 (en) 1986-11-05

Family

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Application Number Title Priority Date Filing Date
EP84401689A Expired EP0138643B1 (en) 1983-09-14 1984-08-20 Control device for railway hopper car trapdoors, hoppers fitted therewith

Country Status (6)

Country Link
EP (1) EP0138643B1 (en)
DE (1) DE3461160D1 (en)
ES (1) ES8603155A1 (en)
FR (1) FR2551712B1 (en)
IL (1) IL72922A (en)
PT (1) PT79194A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2610584A1 (en) * 1987-02-09 1988-08-12 Leduc Rene Hydro Sa Hydraulic device for commanding the opening and closure of hatches, hoppers, particularly for railway wagons
EP2196373A1 (en) * 2008-12-11 2010-06-16 On Rail Gesellschaft für Eisenbahnausrüstung und Zubehör mbH Flap lock
WO2014120028A1 (en) 2013-01-29 2014-08-07 Ux2 Centrum Technologiczne Sp. Z.O.O. The lock of the connection set for structural elements, the connection set with locks and the method of joining constructional elements with the use of the connection set

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Publication number Priority date Publication date Assignee Title
FR1303594A (en) * 1961-08-02 1962-09-14 Arbel Ets Automatic control device for wagon hopper hatches
FR2510505A1 (en) * 1981-07-31 1983-02-04 Arbel Industrie Hopper door for vehicle - has master and subsidiary doors linked using rods cranks and pivots

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FR2549792B1 (en) * 1983-07-29 1986-04-04 Fauvet Girel Ets IMPROVEMENT ON UNLOADING HATCHES FOR WAGON HOPPERS

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Publication number Priority date Publication date Assignee Title
FR1303594A (en) * 1961-08-02 1962-09-14 Arbel Ets Automatic control device for wagon hopper hatches
US3266679A (en) * 1961-08-02 1966-08-16 Arbel Ets Hopper wagons
FR2510505A1 (en) * 1981-07-31 1983-02-04 Arbel Industrie Hopper door for vehicle - has master and subsidiary doors linked using rods cranks and pivots

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ENERGIE FLUIDE, no. 90, octobre 1976, pages 41-43; G. LEDUC: "L'hydraulique laisse tomber la houille" *
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2610584A1 (en) * 1987-02-09 1988-08-12 Leduc Rene Hydro Sa Hydraulic device for commanding the opening and closure of hatches, hoppers, particularly for railway wagons
EP2196373A1 (en) * 2008-12-11 2010-06-16 On Rail Gesellschaft für Eisenbahnausrüstung und Zubehör mbH Flap lock
WO2014120028A1 (en) 2013-01-29 2014-08-07 Ux2 Centrum Technologiczne Sp. Z.O.O. The lock of the connection set for structural elements, the connection set with locks and the method of joining constructional elements with the use of the connection set

Also Published As

Publication number Publication date
PT79194A (en) 1984-10-01
ES535877A0 (en) 1985-12-01
EP0138643B1 (en) 1986-11-05
IL72922A0 (en) 1984-12-31
FR2551712A1 (en) 1985-03-15
FR2551712B1 (en) 1986-01-31
DE3461160D1 (en) 1986-12-11
ES8603155A1 (en) 1985-12-01
IL72922A (en) 1988-07-31

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