Bwg Butzbacher Weichenbau Gmbh

Bwg Butzbacher Weichenbau Gmba

Erich Nuding

Sebastian Benenowski

Alfred Kais

Hubertus Hohne

Hans-Ulrich Dietze

Albrecht Demmig

Rudiger Ziethen

Stefan Schmedders

Fridbert Heinze

Ruediger Ziethen

Friedhelm Wojtek

Hubertus H Ohne

An expansion joint for part of a railway track arranged on a foundation has a stock rail with a stock rail head and a tongue movable with respect to and along said stock rail head, upon which at least one fastening device acys for pressing it on the stock rail. This expansion joint enables the rail foot to be lingitudinally moved with little friction and excludes tipping of the stock rail or tongue. For that purpose, the tongue is not bolted, but pressed only against the stock rail by the fastening device, and the force thus transmitted is decomposed into components that act, on the other hand, in the direction of the foundation and, on the other hand, in the direction of the stock rail head. The force is transmitted by a rolling element extending from a shaft which is anchored to the foundation.

Expansion joint for part of a railway track

A method and device for the elastic bending of a support (16) with at least one bendable end (24), intended in particular for a flexible switch (10). To achieve an elastic line of a finite radius of curvature also at the free end of the support, a bending moment diverging from zero is generated in the elastically bendable end (24) of the support (14) by applying a force coupling to an auxiliary lever (28).

Method and means for the elastic bending of a support for a flexible

The invention relates to a rail line, in particular for a high-speed magnetic train, comprising supports (10) constituting the rail line, which are placed on girders (12, 14) originating on opposite sides (34, 36) of the support and assigned to it in pairs and rest on the ground (16) or a foundation. To achieve an orientation of the rail line in the desired amount, it has been proposed that the girders (12, 14), which are assigned in pairs to each other, have a distance at the ground which is less than that at the supporting end, wherein the girders, controlled to the necessary extent, are adjustable in a plane extending vertically in respect to the linear axis of the rail line (18) in such a way that the rail line extends inclined in respect to the horizontal line.

Rail line, in particular for a high-speed magnetic train

Bearing for a part of a railroad track

Rail support system

A rail junction (20) between rail lines (12, 14) extending in a direction parallel to each other for a car with a predetermined clear space profile, for a dual-track line of a high-speed magnetic train. Rail line (12) consists of line up supports (22, 24) and flexible support (16), rail line (14)consists of supports (28, 26) and flexible support (18), the flexible supports (16, 18) are elastically bent so that their ends (30, 32) are aligned for providing a rail connection. In order to permit a track change without changing the distance between the rail lines, the support (22, 26) adjoining the elastically bendable end (30, 32) of the bendable support (16, 18) is elastically bent outward away from the direction of the rails.

Rail junction

Rail section

A railway tongue and junction rail assembly including a mounting fixed to the junction rail. The tongue abuts the junction rail at an inclined junction and is releasably secured within the mounting with the mounting being the sole means of joining the tongue to the junction rail.

Railway tongue and rail juncture

A roller assembly for a rail switch tongue used with a stock rail exhibiting reduced friction and resistance to vibration includes roller elements for supporting the switch tongue. Each roller element is supported by elastomer springs, one having a damping and the other having a supporting characteristic. The spring elements are mechanically coupled so that loading of the roller elements by the switch tongue causes a change in the spring length.

Roller assembly for a switch tongue used with a stock rail

To achieve low wear and hence a greater shape durability of track parts, it is proposed that the contact surface of a track part have a curvature having a constant difference .DELTA.K in relation to the curvature of the corresponding current contact surface of the wheel supported on it, or that successive contact surfaces of the track part and the wheel have a continually changing curvature difference .DELTA.K with the curvature difference between the contact surfaces of the track part and wheel lessening as the angle of contact tangent increases.

Contact surfaces of a track part and railway wheel

A device for locking a switch blade with a stock rail which includes a locking piece connected to the stock rail. The locking piece has an opening through which the longer leg of an L-shaped locking clamp extends. A switch element also extends through the opening and has an upper surface in contact with the longer leg of the L-shaped member which extends below the foot of the switch blade. The shorter leg has an end free to articulate with respect to a shaft. The shaft is further connected with a clamp receiver or clamp notch. The pivot axis of the clamp receiver member and shorter leg extends parallel with the switch blade and is positioned above the foot of the switch rail such that the clamp receiver member slopes downwardly between the shaft and connection point with the switch blade. This arrangement avoids tipping of the switch as the vertical force vector of the resultant vector passing through the contacting surface of the switching element and first leg intersects the switch blade rail foot on a supporting base immediately adjacent to the switch blade rail foot.

Device for locking a switch blade

A device for locking a switch blade (10, 12) with a stock rail (14, 16) is proposed, whereby the switch blade is held down on a supporting surface only when it is in locked and unlocked positions. When the switch blade (10, 12) is in the locked position it is acted upon by a resultant force (53) that prevents both a rotation of the switch blade and its rising up.

Device for locking a switch blade with a stock rail

A frog tip that can be moved relative to the wing rail is proposed, in which the contact surfaces each curve away from the frog tip and the wing rails in a lengthwise direction.

Frog tip that can be shifted relative to the wing rails

A rail attachment device which allows for longitudinal displacement of a rail. The rail attachment device includes a first element fixedly supported to a ribbed plate and having a vertical arm extending essentially parallel to the longitudinal direction of the rail. The rail attachment device also includes a second element which is connected to the web of the stock rail. Connecting elements connect the first element to the second element so as to allow for longitudinal shifting of the stock rail and second element with respect to the first element fixed to the ribbed plate. In one embodiment, the second element includes a web-plate fixed to the web of the stock rail by a bolt and a plate-like element connected to the web-plate and having longitudinally extending slots. The connecting elements pass through holes formed in the vertical arm and through the elongated slots. The connecting elements are preferably pretensioned so as to have the plate-like element shift with respect to the vertical arm upon reaching a predetermined longitudinal force. A step arrangement between the plate-like element and vertical arm also prevents vertical shifting between the two.

Growing community of inventors

Aalen, Germany

Erich Nuding