SU1033009A3 - Spring clamp for boltless rail joint - Google Patents

Abstract

A rail fastening clip comprises a plate blank bent over itself to provide a base portion (7) adapted to be fixed relative to a rail sleeper and two arms (8) the free ends (9) of which are adjacent the base portion to seat on the foot of a rail. The arms (8) are tapered in cross-section from the base (7) towards their free ends to improve the deflection range of the clip. A method of forming the clip from a generally U-shaped flat metal blank is described.

Description

i

(L

S

About 00

00

CD

Fig. 1 The invention relates to the topmost track of a railway track, specifically to a device attaching rails on a concrete base, in particular to a spring-clamp device without a safety fastener. The known springless clamp of a bolt-free rail fastener, containing a base for fastening it on the base, conjugate with curved shoulders in the vertical plane, having bent ends to interact with the milked rail 1-1. The known spring terminal is not sufficiently reliable when increasing the normal value assembly effort that is necessary for wholesale railings and fasteners. The purpose of the invention is to increase the reliability of the springless terminal of a non-bolt rail fastening. To achieve this goal, in the spring terminal of a bolt-free turnip fastener containing a base for fastening it on a support, conjugated with arcuate in a vertical plane, shoulders with bent ends for interaction with the rear part of the shaft, the shoulders indicated are widening in plan. ends to the base of the terminal, and the spring terminal is made of a metal plate. FIG. 1 depicts a spring. clem, plan view; Fig 2 is the same side view; FIGS. 3 and 4 show a possible embodiment of the proposed terminals, respectively, in the plan and in the profile; FIG. 5 shows a terminal scan; in FIG. 1, the position of the terminals after mounting the free fastener (end view of the rail). The spring terminal in FIG. I, 2 (or 3, 4) contains a base I, passing into arc-curved arms 2 which abut in series (FIG. I, 3) from the ends 3 to the base I, The ends 3 of the spring clip in FIG. I, 2 are directed to its base I, and in FIG. 3, 4 (a possible embodiment) from the base I. To increase the operational durability of the spring terminal, its edges in sections 4, 5 (fig, 5) are calibrated. The terminal sweep in FIG. 5, respectively, comprises a base I, tapering the arms 2 and their ends 3. A metal strip or a rectangular sheet is used to manufacture the spring terminal. A blank is rolled out at the press (FIG. 5). The workpiece is heated to a certain temperature and bent in shape (FIG. I, 2 or 3, 4). Then the hardening and tempering of the clamps are performed to ensure their hardness within the prescribed limits. Fig. 6 shows the position of the spring clip after mounting the boltless fastener, where the rail 6 with the base 7 is installed through a gasket on the concrete sleeper 8 with the anchor 9, the base I of the spring clip is placed in the groove formed by the bend of the South anchor 9, and the ends 3 of the spring clip, in contact with the sole 7 of the rail 6, over part 11. of this anchor. In this position (FIG. 6), the proposed spring terminal (FIG. I, 2) presses the rail within the standard value, and its deflection is about 15 mm The increased elasticity of the proposed spring terminal allows the rail to be pressed to the concrete base within the prescribed limits when mounting the boltless crossing and also when operating on the way.

..

Itb.f

Ubff

Claims (2)

I. SPRING TERMINAL FOR A NAPLESS RAIL SCRAP LE- "" · NII, containing a base for fixing it on a support, conjugated with shoulders arched in a vertical plane, having bent ends for interacting with the rail sole, this is due to the fact that, in order to increase reliability, these shoulders are made widening in plan from ends to the base of the terminal. 2, Spring terminal according to π, I, characterized in that it is made of a metal plate. Fi1.1 1033009 1