DE102005031598A1 - Heavy duty close coupling especially for railway units has a thrust plate with both vertical curvature and horizontal curvature - Google Patents

Abstract

A heavy duty close coupling, especially for railway units, has a drawbar (3) fitted at each end with a profiled thrust plate (7), with vertical and horizontal curvatures, and with connections to fixed thrust plates (6) fitted to the units. The thrust plate has a rectangular shape with a smaller vertical dimension. The horizontal curvatures decrease towards the ends of the thrust plate. A similar design is applied to the vertical profile, thereby providing improved support when negotiating tight bends.

Description

The The invention relates to a high-performance articulated joint for coupling rods short-coupled freight car units according to the generic term of the claimant 1.

Directional coupling versions for railway car dome rods have been known in the past in a larger number been with the urgent objective of increasing the performance parameters at the lowest manufacturing and maintenance costs and a possible low weight of the assemblies.

Kuppelstangen minimize regarding the cost and the use of materials the effort for the short-coupled Car units opposite that of the conventional one Single wagon and also of over Diagonal buffer with UIC pulling devices connected vehicle units.

she offer the advantage of a low dead weight and a charge length adjustment at execution a Telescoping or Nachsteckbarkeit in the coupling tube.

Especially Heavy-duty level joints with large effective directional link widths put the designer in a position to low-weight 2- and 4-axis Freight wagons of only 9 to 15 t own mass derailment safe at track radii from R = 150 m and up to 500 kN longitudinal compressive force, allowing dead load payload ratios up to 1: 4 possible become.

A key task falls in the process the directional joint plates with their rolling surfaces, the required horizontal and vertical rolling radii and the widths and heights of the Rich joint and support bearing plates to who for the size of the reset effect, in particular responsible for the end wagons of a unit.

The internationally standardized UIC directional joint according to UIC leaflet 523 specifies the effective joint width and height as well as the rolling radii for coupling rods with automatic central buffer couplings. It is provided, the vertical rolling radius R _{V of} the directional joint and the horizontal rolling radius R _H perform the same size and to realize on the directional joint plate in the form of a spherical cap. This leads to a simple and inexpensive solution, but has the disadvantage that when increasing the directional joint plates, in particular in width and magnification of the conditions width to height only in one direction, vertical or horizontal optimal Richtgelenklei Stung can be achieved.

In the DE 102 02 241 It has been proposed to substantially increase the articulated joint width and height in relation to the UIC directional joint. It has already been proposed to use differently sized straightening radii R _H and R _V It is intended to apply the rolling surfaces with R _V for vertical stabilization on the directional joint plate in the form of a spherical cap and the rolling surface for horizontal stabilization with R _H separately on the support bearing plate in such a way that in the support bearing plate, a vertical cylinder jacket surface is incorporated, or the same imitate by welding a variety of contour strips.

Next the desired one positive effect of the emergence of large horizontal lever arms with big Restoring moments in the extreme positions, however, there is the disadvantage of the necessary here Machining and the directional joint plates as well as the support bearing plates and the reduction of the center cross section of the support bearing plate, the sole carrying maximum shock and tensile forces of 1000 to 2000 kN, which in turn is not insignificant weight increase the vehicles leads.

task The invention is a high performance articulation for coupling rods of short-coupled freight car units to create, which at the lowest possible production cost and lower net mass the reliable mode of action and the ensures the best effects of lightweight construction at low cost.

The The object is achieved by the Characteristics of claim 1 solved.

Essential to the invention is that the Hochleistungsrichtgelenk the necessary different vertical and horizontal rolling radii R _H and R _{V of} the rolling surfaces between the rectilinear plate and the support bearing plate are mounted on one of them united in such a way that over the hinge width a vertical circular surface with the radius R _V , the radius R _{H is} applied following.

Furthermore, it is provided that the responsible for the horizontal stabilization Abrollradius R _{H is designed} with a bandwidth of size B _RH and vertical to the bandwidth B _RH up and down is provided depending on a vertical radius R _V upwards and downwards.

Other features are that the horizontal rolling surfaces of the directional joint plate are carried out towards the lateral end regions with increasing curvatures, and that the vertical round shape are provided with their vertical rolling surfaces to the upper and lower end portions with increasingly larger curvatures.

The Invention ensures the proposed embodiment an optimal arrangement and realization of both roll-off functions of both the horizontal, as well as the vertical unrolling process on only one contact plate, a simple, inexpensive as well weight-saving solution the problem of achieving highly effective directional joint effects and contributes to the improvement of the safety behavior of lightweight and economical railcar wagon units.

in the Below are embodiments of the Invention explained in more detail with reference to drawings.

The Drawings show in:

1 a front view of the directional joint plate corresponding to section B,

2 a section A through the directional joint plate,

3 a plan view of the directional joint in the installed state.

The 1 shows the approximately rectangular running joint plate 7 with an effective hinge width B _H and an effective hinge height H _V. Horizontal has the directional joint plate 7 supporting plate side, a curvature following the radius R _H.

Out 2 , Section A can be seen that a vertical round shape 9 is executed on the vertical deflection of the coupling rod 3 the pressure transfer point 11 up or down to the edge of the plate 7 can wander to then act on the vertical lever arm H _{V / 2} with longitudinal force acting a vertical restoring moment on the car. The vertical round shape 9 runs over the entire width of the high-performance articulation 1 and follows the horizontal radius R _H. To simplify the production of the directional joint plate and the avoidance of long-term wear on the pressure-loaded contact surfaces is also provided that the responsible for the vertical stabilization Abrollradius R _{H is designed} with a vertically planar bandwidth of size B _RH . Above and below the bandwidth B _RH , the vertical surfaces close 9 on and run to the horizontal edges of the directional joint plate 7 ,

In the plan view of an inventive Hochleistungsrichtgelenk 1 according to 3 is the arrangement of the same between two coupling members of the freight car undercarriage 2 seen. The support bearing plate 6 is rigid with the freight car chassis 2 screwed. About the Zugstanenendteil 5 becomes the directional joint plate 7 , which at the end of the coupling rod 3 is attached and the support bearing plate 6 over the spring system 4 elastically braced. This vertical and horizontal coupling rashes are possible in which the directional joint plate 7 with their rolling surfaces 8th on the support bearing plate 6 can roll. In this case, a pressure force transfer point moves 11 from the middle of the joint 1 outward with the aim of being able to generate all-round restoring moments.

The 3 shows on the left side of the center line the directional joint plate 7 with a rolling surface 8th having a rolling radius R _H. As a result, in the case of clutch deflections over the entire deflection angle, there is a continuous movement of the pressure transfer point 11 guaranteed to the outside. Depending on the size of the rolling radius, the point per degree of deflection angle becomes 11 moved quickly or slowly away from the center of the joint. This is advantageous for small deflection angles, that is to say predominantly for long coupling rods. In expectant larger coupling rashes according to the invention also provided, the rolling surfaces 8th to perform with preferably continuously variable curvatures. Thus, one can achieve that per degree of deflection angle, an initially fast into a slowly slowly moving out moving out of the pressure transfer point.

Right side is in the 3 this type of rolling surfaces is shown. Predominantly with short coupling rods, larger deflection angles are to be expected. Here, it is advantageous initially to generate restoring moments quickly and to let the increase in the restoring effect decay slowly in the end region. It is therefore also provided according to the invention, the rolling surfaces 8th near the direction joint plate center with a smaller curvature 10 as in the end or wheel area of the directional joint plate.

The delayed effect of the influence on the H _Y forces between flange flange and rail in critical carriage position, which was delayed, has a favorable effect on the running safety behavior.

Generally it is also possible to use the rolling surfaces 8th with the vertical round shapes, the radii R _H and R _V or the curvatures 10 following, to arrange reciprocally on the support plate.

list the turned reference parts

1

High performance directional coupling

2

Freight car undercarriage

3

coupling rod

4

spring system

5

Zugstangenendteil

6

Support bearing plate

7

Directional-link plate

8th

rolling surface

9

vertical round shape

10

curvature

11

Pressure power transmission point

B _H

Directional-link width

H _V

Directional coupling height

R _H

horizontal rolling radius

R _V

vertical Abrolkadius

B _RH

Bandwidth of the R _H

Claims (4)

High-performance articulated joint for freight cars units with short coupling via coupling rods, consisting of the joint main functional parts of the directional joint plate and support bearing plate, wherein the directional link has different vertical and horizontal rolling radii, characterized in that the necessary different vertical and horizontal rolling radii R _H and R _{V of} the rolling surfaces ( 8th ) between the directional joint plate ( 7 ) and the support bearing plate ( 6 ) are applied on one of them in a united manner in such a way that over the hinge width B _H a vertical circular surface ( 9 ) with a radius R _V , the radius R _{H is} applied following. High-performance articulated joint according to claim 1, characterized in that the responsible for the horizontal stabilization Abrollradius R _{H is designed} with a vertical flat bandwidth B _RH and vertically on both sides of the bandwidth B _RH up and down each have a vertical circular shape ( 9 ) having the radius R _V. High-performance articulated joint according to one of the preceding claims, characterized in that the horizontal rolling surfaces ( 8th ) of the directional joint plate ( 7 ) towards the lateral end regions with increasing curvatures ( 10 ) are executed. High-performance articulated joint according to one of the preceding claims, characterized in that the vertical round shape ( 9 ) with their vertical rolling surfaces ( 8th ) are also executed after the upper and lower end regions with increasingly larger curvatures.