EP1806267B1 - Coupling head of an automatic central coupler for rail vehicles of Willison design - Google Patents

Abstract

The coupling head (20) of an automatic center buffer coupling for rail vehicles is in the fashion of a Willison coupler and has a coupling socket (18) with two approximately parallel guide faces of a push contour (13) and a pull contour (14). Through suitable sizing of the parts of the buffer coupling, the push contour, the pull contour, the support surface (12) of the small tooth (27) and/or of the coupling socket base (10), deviating from the standard Willison-contour according to UIC code of practice 523, the play with intercoupled coupling heads, especially in the new state of the coupling heads, is almost zero, and especially less than 4 mm.

Description

The invention relates to a coupling head of an automatic central buffer coupling for rail vehicles in the manner of a Willison coupling with the Willison contour (also called Willison profile) according to the preamble of claim 1.

Willison couplings are z. B. from the DE-OS 15 30175 and the DE-OS 14 55 242 known.

There are known automatic couplings with the standardized contour according to the UIC Leaflet 523, which are manufactured as cast couplings and are used in the raw state with great contour play. Such clearance couplings are used in freight cars, the games lead to jerking and strains, but are accepted. For special transport, z. As car transports, such games lead to shifts of the cargo and damage. For passenger coaches additional resilient buffers are installed next to the clutches to maintain the running quality of the car, which cushion the free play in the clutches.

Furthermore, after the DD-PS 111,145 Couplings known whose coupling contour has a specially designed pressure contour for better power transmission of high pressure forces. However, these couplings have a prescribed large game in the contour.

The object of the present invention is to provide such a designed coupling contour of a coupling head of the type mentioned, the very small games in Kupplungslängs- and transverse coupling direction generated, but at the same time ensures the coupling and decoupling similar couplings and also converts the compatibility with the existing couplings with the standard contour.

According to the invention the object is achieved by an automatic coupling with the features of claim 1. Advantageous embodiments are specified in the subclaims.

The core of the invention is to change the proven and successful dimensioning of the standardized Willison contour according to UIC Leaflet 523 to the effect that the coupling and load transfer properties obtained and only the previously occurring in mutually coupled coupling heads game is minimized. For this purpose, it is provided to increase at least one of the guiding, centering, insertion and / or support surfaces relative to the known contour, for example by a uniformly applied overlay layer or by appropriate dimensioning during finishing, so that the play is coupled together, especially when new Coupling heads is almost zero, in particular less than 4 mm.

The invention allows a jam-free coupling and decoupling with the specially dimensioned elevated machinable contact surfaces of the train contour and transverse to the clutch longitudinal axis contact surfaces outside the small tooth and inside the large tooth of the clutch and the specially designed pressure contour in the clutch bag. The contour of the contours is the area of the Willison contour, which comes into contact with the small and large tooth when the traction transfer takes place. The pressure contour is the area of the Willison contour that comes into contact with the small tooth and the clutch pocket on the pressure-side inner contour when pressure is transmitted.

A particular advantage is that only special areas are designed differently. These flat surfaces are accessible for mechanical machining with standard tools, without the production process being made more expensive by the necessity of using special tools.

The very small games remain when used as a starter clutch over a long operational use period. This makes it possible to use standardized electrical couplings with a larger number of contacts.

Furthermore fall with the low-play clutch the necessary in the playful Willison clutches spring additional buffer, so that the installation space can be designed at the vehicle end of passenger cars according to the arrangement of pressure-sensitive high-speed trains.

In an advantageous embodiment of the invention, it is provided that the pressure-side inner contour of the coupling contour of the coupling point of the intersection of the coupling longitudinal axis with the coupling plane section parallel to a straight line through the coupling point approximately at an angle to the coupling longitudinal axis in the direction of the pressure contour lying of about 62 ° and preferably in A constant distance of about 35 mm to the fillet radius in the large tooth runs, wherein the horizontally applied transversely to the clutch longitudinal inner contour in the large tooth relative to the standardized contour by about 3 mm parallel increased flat surface inwards to the coupling point out towards corresponding, parallel surface of the small tooth, which compared to the standardized contour has an increased by about 3 mm outward planar surface. As a result, a particularly advantageous adaptation of the contours corresponding to each other is achieved, so that the engagement and decoupling takes place without jamming or the like without problems, and in the coupled-in state an optimal contact of the traction or pressure surfaces is achieved.

Fig. 1

in einer Draufsicht den erfindungsgemäßen Kupplungskopf mit der spielarmen Kupplungskontur, und

Fig. 2

einen Querschnitt A-A nach Fig. 1 durch den Kupplungskopf.

An embodiment of the invention will be explained below with reference to the drawing. In a schematic representation:

Fig. 1

in a plan view of the coupling head according to the invention with the low-play coupling contour, and

Fig. 2

a cross section AA after Fig. 1 through the coupling head.

The coupling head 20 of an automatic central buffer coupling 100 according to Fig. 1 and 2 has the known Willison contour with a small clutch tooth 27 and a large clutch tooth 9 corresponding guide surfaces of the pressure contour 13, the Zugkontur 14, the support surface 12 and the clutch bag bottom 10. At the large clutch tooth 9 (also called large clutch claw) is a arranged in the direction of travel in the extension of the large coupling tooth 9 forward and within the width of the large coupling tooth erstreichendes Horn 28 arranged that is introduced when coupling in a lying at the same height recess 29 of the same Gegenkuppelkopfes, With this construction is in a simple way the Coupling connection "made rigid", ie, a relative movement of the two intermeshing coupling heads 20 in the vertical direction is thereby reduced to the required minimum.

The small coupling tooth 27 (also called small coupling claw) has two mutually approximately parallel guide surfaces of the pressure contour 13 and the Zugkontur 14 and a standing at an angle support surface 12. The clutch pocket 18 also has two mutually approximately parallel guide surfaces of the pressure contour 13 and the Zugkontur 14, which are associated with the guide surfaces of the pressure contour 13 and the Zugkontur 14 of the small clutch tooth 27, and a clutch bag bottom 10, which is aligned according to the support surface 12.

The coupling contour 19 after Fig. 1 is on the contact surfaces of the train contour 14 with respect to the standardized Willison contour according to UIC Leaflet 523, Appendix 1, designed to approximately 2 - increased 4 mm and has at the transverse to the clutch longitudinal axis 3 clutch bag bottom 10 in the large tooth 9 and the corresponding surface of the small tooth 12 an elevated contour, wherein the pressure-side inner contour 1 of the coupling profile 19 from the coupling point 2 of the intersection of the coupling longitudinal axis 3 with the Kuppeleenenschnittlinie 4 parallel to a straight line 5 through the coupling point 2 approximately at an angle to the coupling longitudinal axis 3 in the direction of the pressure contour 13 lying about 62 ° and preferably at a constant distance 7 of about 35 mm to the fillet radius 8 in the large tooth 9 runs.

Fig. 2 shows the planar design of the contact surface of lying transversely to the clutch longitudinal axis 3 clutch bag bottom 10 in the large tooth. 9

With the flat surface 21 of the clutch cover shelf 10 in the large tooth 9, the coupling of non-rigid couplings with the standard contour according to UIC leaflet 523 is ensured without hooking the couplings.

LIST OF REFERENCE NUMBERS

100

Automatic coupling of a low-play Wittison contour with bolt

1

pressure-side inner contour

2

coupling point

3

coupling longitudinal axis

4

Knoll life line

5

Straight through the coupling point

6

Angle to the coupling longitudinal axis

7

constant distance

8th

fillet radius

9

big tooth

10

Clutch bag bottom

12

supporting

13

pressure contour

14

Zugkontur

15

angled surface

16

corresponding surface of the train contour of the small tooth

17

bars

18

clutch bag

19

coupling contour

20

coupling head

21, 22, 23, 24

plane surface

25

end play

26

cross game

27

small tooth

28

horn

29

recess

L

Longitudinal plane of the bolt system

KA

coupling longitudinal axis

KE

coupling plane

Claims (6)

1. A coupler head (20) of an automatic centre buffer coupler (100) for rail vehicles of a Willison type design having the Willison contour, which coupler head comprises on the front side two coupling claws, namely the small tooth (27) and the large tooth (9), and a coupling recess (18) between them, which extend between the top side and the bottom side of the coupler head (20), the cross section of which is adapted to the cross section of the small tooth (27), wherein the coupling recess (18) comprises two approximately parallel guide surfaces of the push contour (13) and the pull contour (14) and includes associated guide surfaces of the push contour (13) and the pull contour (14) of the small tooth (27) and comprises a coupling recess bottom (10) as an abutment for a support surface (12) of the small tooth (27), wherein a movable bar (17) is arranged within the coupling recess (18), which bar is supported on the bar (17) of the other coupler head, thus retaining a small tooth (27) of the other coupler head (20) within the coupling recess with the large tooth (9) when the coupler heads are coupled to each other, wherein the bar (17) extends into the coupling recess (18) either from the top side or the bottom side of the coupler head (20) and can be moved in the direction in which the coupling recess (18) extends and includes centring and slide-in surfaces of the Willison contour which are arranged on the coupler head (20) so as to be substantially vertical and serve to achieve horizontal alignment during coupling, wherein there may be play in a longitudinal plane and/or transverse plane of the centre buffer coupler when the coupler heads (20) are coupled to each other
   characterized in that
   by suitably dimensioning the parts of the centre buffer coupler and the push contour (13), the pull contour (14), the support surface (12) and/or the coupling recess bottom (10), thus deviating from the Willison contour, namely by raising at least one of the surfaces of the coupler profile (19), play is less than 4 mm when the coupler heads are coupled to each other, in particular if the coupler heads are new, and that the push-side inner contour (1) of the coupler profile extends from the coupling point (2) of the intersection of the coupler's longitudinal axis (3) with the coupling plane intersecting line (4) to the fillet radius (8) in the large tooth (9), parallel to a straight line (5) through the coupling point (2) approximately at an angle of approx. 62° to the coupler's longitudinal axis in the direction of the push contour (13) and preferably at a constant distance (7) of approx. 35 mm, wherein the inner contour (1) which fits closely in the horizontal direction, transverse to the coupler's longitudinal axis (3) comprises a plane surface (21) in the large tooth (9) which is raised parallelly inwards, towards the coupling point (2) by approx. 3 mm, compared to the standardized Willison contour, and the corresponding, parallel support surface (12) of the small tooth (27) comprises a plane surface (22) which is raised outwards by approx. 3 mm, compared to the standardized Willison contour.
2. A coupler head according to claim 1, characterized in that at least one surface of the push contour (13), the pull contour (14), the support surface (12) and/or the coupling recess bottom (10) of the coupler head contour (19) is designed so as to be parallelly displaced, in particular raised, by a certain amount, in particular by 2-4 mm, compared to a standardized Willison contour.
3. A coupler head according to claim 1 or 2, characterized in that at least one raised plane surface which is applied to the coupler contour (19) is not applied to a pull contour (14) of the coupler contour (19) but to a push contour (13) of the coupler contour (19).
4. A coupler head according to any one of claims 1 to 3, characterized in that the surface (15) of the pull contour (14) which extends horizontally in the large tooth (9), at an angle (6) of approximately 62° to the coupler's longitudinal axis (3), forms a plane surface (23) which is raised parallelly inwards, towards the coupling point (2) by approx. 3 mm, compared to the Willison contour, which surface is parallel to the corresponding surface (24) of the pull contour (14) of the small tooth (27) and comprises a plane surface (26) which is raised outwards by approx. 3 mm, compared to the standardized contour.
5. A coupler head according to claim 4, characterized in that the surfaces (21, 22 and 23, 24) have tolerances in the range of a machining process, relative to each other as well as to the coupling point (2).
6. A coupler head according to any one of claims 1 to 5, characterized in that the coupler contour (19) designed in this manner furthermore has an axial play (25) of less than 2 mm in the direction of the coupler's longitudinal axis (3) and a transverse play (26) of less than 2 mm in the direction transverse to the coupler's longitudinal axis (3) in the coupled state, i.e. if two coupler heads (20) are coupled to each other.

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