FR2543900A1 - ARTICULATION FOR CENTRAL PAD HITCHING - Google Patents

Abstract

ARTICULATION FOR A CENTRAL BUFFER COUPLING, IN PARTICULAR FOR VEHICLES ON TRACKS, IN WHICH THE DRAWBAR IS ARTICULATED BY DIAL TO THE HINGE AXLE AND IN WHICH IS PROVIDED, IN THE DRAWBAR, A DEVICE TAKING UP THE TRACTION AND PADDING; ON THE HINGE AXLE13, EXTENDED DOWNWARDS BEYOND THE ARTICULATION HOUSING14, IS PROVIDED WITH THE POSSIBILITY OF ROTATION, A SUPPORT15; BETWEEN THE DRAWBAR11, OR THE HOUSING OF THE DEVICE12 TAKING UP TRACTION AND PADDING, AND THE SUPPORT15 ARE AT LEAST ONE SPRING17 WHICH OBSTRUCTS TO THE FRONT AND AT LEAST ONE ROLLER20 WITH A VERTICAL AXLE, SOLICITED BY A SPRING LESS AGAINST THE EDGE OF A CAME21 DISC TO RETURN TO THE MIDDLE HORIZONTAL POSITION.

Description

ARTICULATION FOR CENTRAL PAD HITCHING

  The invention relates to a joint for a central buffer coupling, in particular for rail vehicles, in which the coupling bar is articulated by dial to the articulation axis of the articulation casing and in which is provided, in the drawbar, a

  a device resuming traction and buffering.

  The closest state of the art shows in the document OS 20 15 291 a joint in which a hinge is articulated at the upper end and at its lower end, which has extensions which go in the direction of the drawbar and to which the drawbar is

  fixed in the middle position vertically by the

  spring intermediate The return to the middle position in the horizontal plane is done through

  rollers which rest on cam surfaces.

  The disadvantage of such a device lies above all in that the space on the articulation casing and here in particular above this casing is very limited and in that it is therefore not possible in many cases extend the hinge pin upwards to

retake the spacer.

  The object of the invention is therefore to avoid known disadvantages and to create a joint which is relatively simple in structure and nevertheless works.

safe.

  To achieve this object the solution consists in that on the articulation axis, extended downwards beyond the articulation casing, is arranged, with

  possibility of rotation, support; and in that between

  the drawbar, or the casing of the device taking up traction and buffering, and the support are arranged at least one spring which rises obliquely forward and at least one roller with vertical axis, biased by a spring and which s' presses against the edge of a cam disc to

  return to medium horizontal position.

  It is advantageous if the cam disc is adjustable. The distance from each other of the points of articulation of the springs on the support should be greater than that of the points of articulation of the

springs on the drawbar.

  The advantage of the articulation according to the invention resides in that the space requirement is reduced to a minimum and that nevertheless all the functions of the vertical support and of the horizontal support and of the return to the middle position in the vertical direction and in the horizontal direction can work perfectly without having to plan

additional devices.

  Other features and advantages of the

  vention will be better understood on reading the description

  tion which will follow from an exemplary embodiment and with reference to the accompanying drawing which shows a side view of an embodiment, taken by way of example, of the device according to the invention, in which the bar coupling 11, in which is incorporated a device, known per se, taking up traction and buffering 12, is suspended by cardan from the hinge pin 13 which

  its side carries vertically in the articulation housing.

  lation 14 This axis 13 is extended downward and, to this extension, is fixed, with the possibility of rotation, a support 15 On both sides of the drawbar 11 are arranged on the support 15 two eyelets 16 to which is respectively articulated a compression spring 17 housed in a casing and articulated on its side, by its other end, with respectvi-ment an eyelet 18 disposed on each side of the device 12 resuming traction and buffering The eyelets 16 have there on the

  support 15 a greater distance than the eyelets 18.

  The force of the springs 17 is adjustable in a known manner, which makes it possible to place the coupling head exactly in the middle position in the vertical direction. At the rear end 19 of the device 12 resuming traction and buffering, are respectively arranged, two sides of the drawbar, a roller 20 with a vertical axis, loaded by a spring, the direction of compression being approximately radial to the articulation axis 13 The rollers 20 are pushed against the edge of a cam disc 21 This edge comprises, in known manner, oblique surfaces and concentric surfaces and it is locked between

  adjustable stops 22, so that it cannot rotate.

  When using this articulation, the drawbar 11, with the device 12 resuming traction and buffering, can rotate around the axis 13 and thus follow the curves crossed by vehicles on rails thus coupled The casing of articulation 14 is screwed to the vehicle on rail The shocks in the longitudinal direction of the vehicles between the vehicles coupled to each other are taken up by the

  device 12 resuming traction and shocks,

  same as the particularly high tensile forces

  aunts During the rotation of the drawbar il in the horizontal plane, the rollers 20 slide along the edge of the cam disc 21 and then cause a return force to appear if the rollers 20 come on an oblique surface, which can recall the drawbar

  11 in the middle position in the horizontal plane.

  When the drawbar It deviates upwards in a vertical direction, due to its own weight, it falls back to the middle position in a vertical direction and then rests on the two springs 17 Si _ 3) the drawbar 11 deviates down from the middle position in the vertical direction, the springs 17 are compressed, which creates a force which pushes the drawbar 11 again upwards into position

  average in the vertical direction when the deviation ceases.

  In the event of a combination of deviations from the horizontal mean position and from the vertical mean position, the springs 17 and the springs of the rollers 20 are both compressed and, by working together, can return as well to the middle position. horizontal in vertical movcenne position the drawbar 11 The support 15 turns when the drawbar 11 deviates in the horizontal plane To facilitate this rotational movement, the eyelets 16 provided as articulation point for the springs 17 have a greater distance than the eyelets 18 on the devices taking up the traction and

  -e stamping, seen in the horizontal direction.

  Although in the present example, the cam disc is fixed, with the possibility of adjustment, to the articulation casing, it is also possible without other to fix, with the possibility of adjustment, the cam disc 21 to the bar. coupling, so that this disc is driven in the horizontal displacements of the coupling bar, and then to have, in a fixed manner, the rollers 20 loaded by spring and bearing on the edge of the cam disc, in the casing of the joint, for example in a

  easy to replace spring housing.

  Of course various modifications can be made by those skilled in the art to the devices which have just been described solely by way of non-illustrative example.

  limiting without departing from the scope of the invention.

Claims (4)

  1 Joint for a central buffer coupling, in particular for rail vehicles, in which the drawbar is articulated by cardan to the articulation axis of the articulation housing and in which is provided, in the coupling, a device resuming traction and buffering, characterized in that on the articulation axis (13), extended downwards beyond the articulation casing (14), is arranged, with the possibility of rotation, a support (15); and in this   between the drawbar (11), or the housing of the   positive (12) taking up traction and buffering, and the support (15) are arranged at least one spring (17) which rises obliquely forward and at least one roller (20) with vertical axis, biased by a spring and who   presses against the edge of a cam disc (21) to   come in medium horizontal position.   2 Joint according to claim 1, charac-   characterized in that the cam disc (21) can be adjusted by means of a stop (22) provided on the articulation casing (14).   3 Joint according to claim 1 or claim 2, characterized in that the eyelets (16), designed as points of articulation for the springs (17), are at a greater distance from each other on the support (15) that are only the eyelets (18) on the drawbar (11) or the casing of the device taking up the traction and buffering (12).   4 Articulation according to any one of   Claims 1 to 3, characterized in that one can   adjust the force of the springs (17) for a medium position   of the coupling head in the vertical plane.