Abstract

The invention relates to a clamping spring (1) for holding down a track body element, such as a foot of a rail, the clamping spring comprising a U-shaped main portion which has: - a U bend (2); - a first leg (3) located on one side of the U bend (2); and - a second leg (4) located on the other side of the U bend (2). In this clamping spring, a retaining portion (5) curved inward in the shape of a hook and supportable on a hold-down element (12) is formed on the first leg (3), and an end portion (6) bent toward or away from the retaining portion (5) is formed on the second leg (4), the U bend (2) forming a torsion portion so that a hold-down force can be applied to the track body element by means of the bent end portion (6).

IPC Classes  ?

• E01B 9/30 - Fastening on wooden or concrete sleepers or on masonry with clamp members by resilient steel clips
• E01B 9/48 - Fastening the rail on the tie-plate by clamps by resilient steel clips

Abstract

The invention relates to a method for producing a rail fastening, wherein a track body element, such as a rail foot (16) of a rail (8) for example, is elastically held down by at least one hold-down section (6), such as a holding arm for example, of a tension spring (1), in the final installation position of the tension spring, said tension spring (1) consisting of a tempered spring steel. The method has the steps of installing the tension spring (1) on a support, wherein a hold-down element (12, 25) is used to bring the tension spring (1) into a tensioned state, in which the tension spring (1) is tensioned from an untensioned state, thereby deflecting the hold-down section (6) along the spring travel (z). According to the invention, the hold-down section (6) is deflected in the direction of the spring travel (z) to such a degree during the installation process that the tension spring (1) undergoes a cold forming process, after which the tension spring (1) is at least partially untensioned. Fig. 1

IPC Classes  ?

• E01B 9/30 - Fastening on wooden or concrete sleepers or on masonry with clamp members by resilient steel clips
• E01B 9/48 - Fastening the rail on the tie-plate by clamps by resilient steel clips

Abstract

In a method for producing a plurality of concrete cast elements of prestressed concrete, in particular for producing of railway sleepers, in a long bed which is a multiple of the length of a concrete cast element, in which separating elements are installed in the long bed to define the length of each of the concrete cast elements to be casted, a first and a second separating element for defining the length of a concrete cast element together with a tensioning device with tensioning elements for tensioning the concrete cast element between the two separating elements are mounted in the long bed, whereupon the concrete cast element is cast between the two separating elements and is at least partially hardened in the long bed.

IPC Classes  ?

• B28B 23/02 - Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material wherein the elements are reinforcing members
• B28B 23/04 - Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material wherein the elements are reinforcing members the elements being stressed
• B28B 23/06 - Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material wherein the elements are reinforcing members the elements being stressed for the production of elongated articles

Abstract

The invention relates to a track component (1), more particularly crossing frog (1), having a running surface for a wheel of a rail vehicle, a lower surface (2) opposite the running surface and at least one cavity (3) open to the lower surface (2), vibration damping means (8) being received in the cavity (3). According to the invention, the vibration damping means (8) are formed by a composite material arranged in the cavity (3) and comprising an elastomeric foam material and pieces of a particulate aggregate distributed in the elastomeric foam material.

IPC Classes  ?

• E01B 7/12 - Fixed frogs made of one part or composite
• E01B 19/00 - Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise

Abstract

In a stock rail for use in a railroad switch, there are a rail head, a rail web and a rail foot, wherein the stock rail has a first longitudinal section forming an abutment region for a tongue rail and a second longitudinal section lying outside the abutment region, wherein the stock rail in the second longitudinal section has a cross-sectional base profile with a central axis extending through the center of the rail head cross section, wherein the rail head in the first longitudinal section is machined starting from the cross-sectional base profile so that the running edge, compared to the base profile, lies closer to the central axis of the stock rail, the rail head having substantially no width reduction at least at a first point within the first longitudinal section and having a maximum width reduction at least at a second point within the first longitudinal section, it is provided that the running edge at the first point and the running edge at the second point lie substantially in a common running edge plane.

IPC Classes  ?

• E01B 7/02 - Tongues; Associated constructions

Abstract

The invention relates to a method for producing a plurality of concrete castings from prestressed concrete, in particular for producing railway sleepers, in a long bed (1) having a multiple of the length of a concrete casting. In this method, separating elements (2, 3) are inserted into the long bed in order to define the length of the concrete castings to be cast, a first and a second separating element (2, 3) for defining the length of a concrete casting are fixed in the long bed (1), together with a stressing device (5) having stressing elements (6) for stressing the concrete casting between the two separating elements (2, 3), whereupon the concrete casting is cast between the two separating elements (2, 3) and is at least partially hardened in the long bed (1).

IPC Classes  ?

• B28B 23/02 - Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material wherein the elements are reinforcing members
• B28B 23/04 - Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material wherein the elements are reinforcing members the elements being stressed

Abstract

A stock rail (1) for use in a set of points, comprising a rail head (5), a rail web and a rail foot, wherein: the stock rail (1) has a first longitudinal section (3) that forms a contact region for a point rail (2), and has a second longitudinal section (4) that lies outside the contact region; the stock rail (1) has in the second longitudinal section (4) a base profile cross-section with a central axis (9) running through the centre of the rail head cross-section; the rail head (5) in the first longitudinal section (3) is machined starting from the base profile cross-section so that, in comparison with the base profile, the running edge (7) is closer to the central axis (9) of the stock rail (1); and the width of the rail head (5), at least at one first point in the first longitudinal section (3), is substantially not reduced, and the reduction in the width, at least at one second point in the first longitudinal section (3), is at its maximum. For this stock rail, the running edge (7) at the first point and the running edge (7) at the second point lie substantially on a common running edge plane (8).

IPC Classes  ?

• E01B 7/02 - Tongues; Associated constructions