DE102005031598B4 - High performance directional coupling - Google Patents

Abstract

High-performance articulated joint for freight car units with short coupling via coupling rods, consisting of the joint main functional parts of the directional joint plate and support bearing plate, the directional link having different vertical and horizontal rolling radii, characterized in that the necessary different vertical and horizontal rolling radii RH and RV of the rolling surfaces (8) between the articulated joint plate (7) and the support bearing plate (6) are mounted on one of them in a united manner in such a way that over the joint width BH a vertical round surface (9) with a radius RV, the radius RH is applied following.

Description

The invention relates to a high-performance articulated joint for freight wagon units with short coupling via coupling rods according to the preamble of claim 1.

Richtgelenkausführungen for railway wagon coupling rods have been made known in the past in a greater number with the priority objective of increasing the performance parameters with minimum manufacturing and maintenance costs and the lowest possible weight of the assemblies.

Coupling bars minimize in terms of manufacturing costs and the use of materials the cost of the short-coupled car units over that of the conventional single car and also connected via diagonal buffer with UIC drawbars vehicle units. They offer the advantage of a low dead weight and a loading length adjustment when executing a telescoping or Nachsteckbarkeit in the coupling tube. In particular, high-performance articulated joints with large effective directional joint widths enable the designer to develop low-weight 2- and 4-axle freight cars of only 9 to 15 t deadweight derailment at track radii of R = 150 m and up to 500 kN longitudinal compressive force, so that dead load payload of up to to 1: 4 possible.

A key task falls to the directional joint plates with their rolling surfaces, the required horizontal and vertical rolling radii and the widths and heights of Richgelenk- and support bearing plates, which are responsible for the size of the return action, especially in the Endtragwagen 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 cost-effective 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 articulated joint performance can be achieved. In the DE 102 02 241 C1 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 envisaged 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 imitate same by welding a variety of contour strips. In addition to the desired positive effect of the emergence of large horizontal lever arms with large restoring moments in the extreme positions, however, there is the disadvantage of the processing required here as well as the directional joint plates and the support bearing plates and the reduction of the center cross section of the support bearing plate, the sole maximum load and tensile forces from 1000 to 2000 kN, which in turn leads to a not insignificant weight increase of the vehicles.

Furthermore, from the DE 199 44 754 A1 a train-pressure-coupling rod device for a directional joint known. The EP 1 247 715 A1 has a train and bumper device for rail vehicles to the object. In both cases, energy consumption measures are taken in the event of a crash.

The object of the invention is to schafffen a high-performance articulated joint for coupling rods of short-coupled freight car units, which ensures reliable operation and the best effects of lightweight construction at low cost with the lowest possible production cost and low net mass.

The object is achieved by the features of claim 1.

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 unified in such a way that over the joint width a vertical circular area 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.

Further features are that the horizontal rolling surfaces of the directional joint plate are designed towards the lateral end regions with increasing curvatures, and that the vertical circular shape are provided with their vertical rolling surfaces towards the upper and lower end regions with increasingly larger curvatures.

The invention ensures by the proposed embodiment an optimal arrangement and realization of both Abrollfunktionen both the horizontal, as well as the vertical Abrollvorganges on only one contact plate, a simple, inexpensive and weight-saving solution to the problem of achieving highly effective directional joint effects and makes a contribution to improving the running safety of lightweight and economical railcar wagon units.

Embodiments of the invention are explained in more detail below 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 round surfaces close 9 on and run to the horizontal edges of the rectal 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 drawbar end part 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, a continuous movement of the pressure force transmission point takes place 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. With expected larger coupling rashes according to the invention also provided, the rolling surfaces 8th to perform with preferably continuously variable curvatures. It can thus be achieved that per degree of deflection angle, an initially rapid transition into a subsequently slow moving out of the pressure force transmission 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 edge region of the directional joint plate perform. 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 OF REFERENCE NUMBERS

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 rolling radius

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.

Images