摘要:
A concrete railway rail foundation wherein an uppermost face of the foundation comprises a rail seat area for supporting a railway rail extending in a first direction across the rail seat area, two anchoring device seating regions located on either side of the rail seat area for accommodating respective anchoring devices, and, on each side of an anchoring device seating region, an upstanding portion having a height substantially the same as or higher than that of an anchoring device and a depth, in a second direction substantially perpendicular to the first direction, which is substantially the same as or deeper than that of the anchoring device is disclosed.
摘要:
In a railway rail pad having a rail seat portion for receiving a foot of a railway rail, the rail seat portion is provided on at least one major face thereof with a plurality of protrusions which are unevenly distributed across the face of the rail seat portion such that the ratio of the area of the face occupied by the protrusions to the area of the face free of protrusions is greater in an edge region of the rail seat portion than in a central region of the rail seat portion, the edge region being adjacent to one edge of the pad and the central region being adjacent to the edge region. The studs are arranged in columns, each stud being of substantially the same size, and the number of studs in a column in the central region which is closest to said edge region being greater than in a column closer to the center of the rail seat portion. The studs are also arranged in rows, wherein the ratio of protrusions to free area in a row of studs adjacent to, but spaced from, the center of the rail seat portion is greater than that in a row further from the center.
摘要:
In a railway rail fastening clip 1 for fastening a railway rail to an underlying rail foundation, which clip 1 is formed of an elongate plate shaped such that a central region 11 of the plate has in profile the form of a letter C, a first end region of the plate extending from one side of the central region 11 of the plate to form a substantially planar base portion 12 of the clip for engaging a rail fastening anchoring device secured to the rail foundation and a second end region of the plate extending from the opposite side of the central region 11 of the plate to form a toe portion 13 of the clip for bearing on a foot of the railway rail, such that in profile the second end region extends further than the first end region, the toe portion of the clip is provided with a throughhole 14 which is arranged such that, when the clip is in its operative configuration, part or all of the throughhole 14 lies above the foot of the rail, the throughhole being configured to receive a corresponding spigot 25 of a toe insulator 2 for electrically insulating the clip from the rail whereby the insulator can be retained on the toe portion of the clip.
摘要:
In a concrete railway rail foundation (200; 250; 260), on which anchoring devices (4; 45) for retaining railway rail fastening clips (3) are to be located when the foundation (200; 250; 260) is in use, the face of the foundation (200; 250; 260) which is to be uppermost when the foundation (200; 250; 260) is in use has a rail seat area (202; 252; 262) for supporting a railway rail (1) extending in a first direction across the rail seat area (202; 252; 262), two anchoring device seating regions located on either side of the rail seat area (202; 252; 262) for accommodating respective anchoring devices (4; 45) to be located on the foundation (200; 250; 260), and, on each side of each anchoring device seating region, an upstanding portion (201; 251; 261) having a height substantially the same as or higher than that of an anchoring device (4; 45) to be located on the foundation (200; 250; 260) and a depth, in a second direction substantially perpendicular to the first direction, which is substantially the same as or deeper than that of the said anchoring device (4; 45). In a concrete railway rail foundation assembly comprising such a concrete railway rail foundation and an anchoring device (45) located in one of the said anchoring device seating regions on the uppermost face of the foundation, the anchoring device comprising an anchoring device body (48) having a front face (46), the body (48) extending above the uppermost face of the foundation (260) such that the front face (46) of the body (48) is adjacent to a railway rail (1) when the assembly is in use, the front face (46) is provided with end parts (47) which extend outwardly from the body (48), such that each end part (47) overlaps part of an adjacent one of the said upstanding portions (201; 251; 261). An electrical insulator (500) for location between a foot of a railway rail (1) and an adjacent anchoring device (4; 45), for use with such a foundation (200; 250; 260), has a reaction face (501) which is wider than the face (41; 46) of the anchoring device (4; 45) against which it is to abut.
摘要:
Railway rail fastening apparatus, for suspending a railway rail at discrete locations along its length above a rail foundation, comprises two rail suspending assemblies located when in use one on each side of the rail. Each assembly comprises an elastic member for supporting the head of the rail on one side thereof and a bracket for applying a lateral clamping force to the elastic member. The rail suspending assembly on one side of the rail is located such that the centre line of the assembly is offset with respect to that of the rail suspending assembly on the other side of the rail by x mm along the longitudinal axis of the rail, where x is 50≧x>0 mm.
摘要:
In an assembly for use in fastening a railway rail to an underlying rail foundation, a resilient railway rail fastening clip (1, 2,3) has at least one portion (1a) which when in use bears on, and extends substantially parallel to, a flange (301) of an adjacent railway rail (300), and retains an insulator (13, 13') for electrically insulating the clip (1, 2, 3) from the rail (300) when in use. The insulator (13) is held in engagement with the clip (1, 2, 3), which has a rail bearing portion of substantially circular cross-section, such that it can rotate about the longitudinal axis of the said rail bearing portion (1a). Unlike the prior art the insulator is self-aligning on the rail flange (301) when the rail (300) moves. One insulator (13, 13') disclosed has at least two load bearing surfaces (13a), such that it may be rotated so as to present an unworn load bearing surface (13a) to the rail flange (301). The thickness of material between the load bearing surfaces (13a) of the insulator (13, 13') and the rail bearing portion (1a) of the clip (1, 2, 3) may be made to vary between adjacent load bearing surfaces (13a), such that the insulator (13) can be rotated so as to adjust the height of the rail bearing portion (1a) above the rail flange (301).
摘要:
An anchoring device for use in a railway rail fastening assembly which employs a resilient railway rail fastening clip to fasten a railway rail, comprises a body having a front portion which is configured to provide a first load bearing surface extending alongside the rail foot when the device is in use, and first and second side faces respectively located on opposite sides of the body and configured to extend transversely away from the first portion. The device comprises first and second projecting portions, the first projecting portion extending outwardly from the first side face of the body and providing a first additional load bearing surface which is set back from the first load bearing surface, and the second projecting portion extending outwardly from the second side face of the body and providing a second additional load bearing surface which is set back from the first load bearing surface.
摘要:
Railway rail fastening apparatus, for suspending a railway rail at discrete locations along its length above a rail foundation, comprises two rail suspending assemblies located when in use one on each side of the rail. Each assembly comprises an elastic member for supporting the head of the rail on one side thereof and a bracket for applying a lateral clamping force to the elastic member. The rail suspending assembly on one side of the rail is located such that the center line of the assembly is offset with respect to that of the rail suspending assembly on the other side of the rail by x mm along the longitudinal axis of the rail, where x is 50≧x>0 mm.
摘要:
A method of manufacturing a resilient rail clip comprises bending a rod, made of metal having a hardness value falling within a known hardness value range, into a predetermined shape and then subjecting the bent rod to a cold setting process in order to induce in the bent rod a predetermined amount of permanent set (S). One cold setting process comprises applying a first load (F0) to part of the bent rod so as to cause a first amount of deflection of that part of the bent rod, which first load (F0) is a predetermined load having a value equal to or greater than that required to reach the yield point of metal having the highest hardness value in the said hardness value range, measuring the first amount of deflection (dX) of the said part of the bent rod achieved by applying the predetermined first load (F0), determining, on the basis of the measured deflection amount (dX), either (i) a second load (F0+ΔFX), which, when applied to the said part of the bent rod, will cause the bent rod to acquire the predetermined amount of permanent set (S), or (ii) a second amount of deflection (dX+ΔdX) of the said part of the bent rod required in order to bring about in the bent rod the predetermined amount of permanent set (S), and applying the second load (F0+ΔFX) to the said part of the bent rod or deflecting the said part of the bent rod by the determined second amount of deflection (dX+ΔdX). An alternative cold setting process comprises deflecting part of the bent rod by a predetermined first amount (d0) by applying a first load (FX) having a value equal to or greater than that required to reach the yield point of metal having the highest hardness value in the said hardness value range, measuring the amount of the first load (FX) required to achieve the predetermined first amount of deflection (d0), determining, on the basis of the measured load, either (i) a second deflection amount (d0+ΔdX) required in order to bring about in the bent rod the predetermined amount of permanent set (S), or (ii) a second load (FX+ΔFX), which, when applied to the said part of the bent rod, will cause the bent rod to acquire the predetermined amount of permanent set (S), and deflecting the said part of the bent rod by the determined second deflection amount (d0+ΔdX) or applying the determined second load (FX+ΔFX) to the said part of the bent rod.
摘要:
A component for use in a rail fastening assembly, the assembly comprising a railway rail fastening clip having a first part for bearing on a railway rail and a railway rail clip anchoring device for retaining the railway rail clip, comprises a first portion adapted to receive a lateral load from the rail when located between a substantially upright face of the rail clip anchoring device and the side of the foot of an adjacent railway rail when the assembly is in use. The component further comprises a second portion for receiving a second bearing part of the railway rail clip. The first portion and the second portion of the component are spaced apart and interconnected by a connection portion.