Device for fastening rails for rail vehicles

Abstract

Device for fastening rails (1) for railway vehicles to sleepers (3) arranged one behind the other by means of a standardized W-fastening, wherein each sleeper (3) has two roughly W-shaped recesses into which two angle guide plates (7) are inserted and the angle guide plates (7) and tension clamps (5) are fastened to the sleeper (3) with sleeper screws (4), and wherein an elastic intermediate layer (2) is provided between the rail (1) and the sleeper (3), characterized in that a screw sleeve (6) is provided with at least two diametrically opposed flats (10), and that each such screw sleeve (6) provided with an internal thread is screwed onto the end of each sleeper screw (4) or onto both threaded ends of a single arc-shaped sleeper screw (4),wherein the inner thread of the screw sleeve (6) corresponds to the outer thread of the sleeper screws (4) or to the thread of the two ends of the single arcuate sleeper screw (4), so that by turning the screw sleeve (6) its height relative to the sleeper screws (4) or the single arcuate sleeper screw (4) changes, thereby variably adjusting the height of the rail (1).

Description

The invention relates to a device for fixing rails for rail vehicles to sleepers arranged one behind the other by means of a standardized W-fastening, wherein each sleeper has two roughly W-shaped depressions, into which two angle guide plates are inserted and the angle guide plates and clamping clamps are fixed to the sleeper by sleeper screws, and wherein an elastic intermediate layer is provided between the rail and the sleeper.Such a device is known from DE 20 2013 103 459 U1. This device relates to a constant rail fastening on the sleeper that cannot be varied in height with a dowel / clamp screw connection or a sleeper screw connection without dowels, including various fastening elements. An improvement is to be achieved in this case by providing a highly load-bearing guide plate with a further reduced weight as the guide plate, which can also be designed as an angle guide plate. This device does not have other significant features.A similar device is shown in FR 2 160 789 A1. In this case, the sleeper screw is formed in a U-shaped manner such that the two threaded ends of the U-shaped sleeper screw are directed upwards.In the devices of the aforementioned type, the sleepers are arranged at a distance one behind the other and serve to keep the rails of a track at a defined distance from one another. In the rail fastening systems predominantly used today in conventionally laid railway tracks, the use of large machine technology is required in order to regulate the height of sets of the track grid formed from rail and sleeper. Such measures are frequently required in the transition region of fixed roadway to conventional ballast superstructures and at the transitions of the bridges on conventional paths due to the different setting behavior of the various substrates.The above-mentioned measures are very cost-intensive, time-consuming and can only be carried out with the track installation locked. The track grid is raised by means of large machine technology and the track installation is restored and stabilized with the tamping units and compressors of the machine. This height compensation by lifting the entire track grid also requires filling the lifted track grid with ballast in order to be able to restore the bedding cross section. The works associated therewith are limited, in particular in the case of upper limits such as, for example, bridges, tunnels, overhead lines and other fixed points. After this maximum height has been reached, the track grid must be lowered again with considerable expenditure of time and costs.The invention is based on the object of configuring a rail fastening for concrete sleepers in such a way that a height compensation of the rail is possible with simple means and the use of large machine technology can be dispensed with.The solution of the stated object consists in a device of the type mentioned at the beginning in that a respective threaded sleeve is screwed onto the end of each sleeper screw or onto both threaded ends of a single arcuate sleeper screw, wherein the inner thread of the sleeve corresponds to the outer thread of the sleeper screws or to the thread of the two ends of the single arcuate sleeper screw, so that by rotating the sleeve the height position thereof relative to the sleeper screws or the single arcuate sleeper screw changes, whereby the height of the rail is variably adjusted.Due to the design of the rail fastening according to the invention, only a relatively low expenditure of time and cost is required for the height adjustment of the rail. A further advantage is that the proven clamping clamps of the W-fastening do not have to be dispensed with. The height position of the rail to be compensated for, caused by track sets, is regulated in a known manner by means of continuously adjustable plastic plates. This system has proven itself and is not modified in the rail fastening according to the invention.In one embodiment of the invention, a lower part is provided below the angle guide plate, the angle guide plate forms a sleeper insert with the lower part, a space is provided in the sleeper whose inner dimensions correspond to the outer dimensions of the sleeper insert, and the sleeper insert is inserted into the space provided in the sleeper. In this case, the angle guide plate is firmly connected to the lower part.By means of the above-described configuration of the device according to the invention, the screw sleeve is held securely, so that the continuous adjustability of the screw sleeve and its fastening at any desired height is ensured.The angle guide plate and the lower part located underneath can be formed from the same material or from different materials. However, it has proven expedient to form at least the lower part of the sleeper insert provided below the angle guide plate from a glass fibre-reinforced polyamide. The lower part of the angle guide plate, which is subject to friction, is therefore very wear-resistant.According to the invention, the screw sleeve is further provided with at least two respectively diametrically opposite flattened portions, so that a turning of the screw sleeve by means of a wrench is made possible in a simple manner.The drawing shows an embodiment of a device for the attachment of rails for rail vehicles. The following are shown: FIG. 1 is a cross-sectional view of the rail mounting according to the invention taken along the line A--A in FIG. 2, the left half showing the rail in its lowermost position and the right half showing the rail in its uppermost position; FIG. 2 is a plan view of the rail fastener shown in FIG. 3; FIG. 3 shows a threaded sleeve provided with an inner thread; FIG. 4 is a top view of the screw sleeve shown in FIG. 3.In the embodiment shown in FIGS. 1 and 2, the rail 1 rests on a known intermediate layer 2 of adjustable thickness and a single arcuate sleeper screw 4 is provided with two threaded ends by means of sleeper screws 4 and clamping clamps 5 embedded in the sleeper 3. Screwed onto both threaded ends of the sleeper screw 4 is a respective internally threaded screw sleeve 6. The screw sleeve 6 is guided through the angle guide plate 7. Below the angle guide plate 7 a lower part 8 is provided which is firmly connected to the angle guide plate 7 and forms a sleeper insert together with the angle guide plate 7. The sleeper insert is inserted into a space 9 provided in the sleeper 3, wherein the outer dimensions of the sleeper insert correspond to the inner dimensions of the space 9.The screw sleeve 6 shown in FIGS. 3 and 4 is provided in its upper region with flattened portions 10, which enable the screw sleeve 6 to be rotated by means of a wrench. The screw sleeve 6 is also designed in its lower region as a support ring 11 and has a circumferential groove 12 into which a snap ring-not shown-can be inserted.

Claims

Device for fastening rails (1) for rail vehicles on sleepers (3) arranged one behind the other by means of a standardized W fastening, wherein each sleeper (3) has two roughly W-shaped depressions, into which two angle guide plates (7) are inserted and the angle guide plates (7) and clamping clamps (5) are fastened to the sleeper (3) by sleeper screws (4), and wherein an elastic intermediate layer (2) is provided between the rail (1) and the sleeper (3), characterized in that a screw sleeve (6) is provided with at least two diametrically opposite flattened portions (10), and in that in each case one such internally threaded screw sleeve (6) is screwed onto the end of each sleeper screw (4) or onto both threaded ends of a single arcuate sleeper screw (4), wherein the inner thread of the screw sleeve (6) corresponds to the outer thread of the sleeper screws (4) or to the thread of the two ends of the single arcuate sleeper screw (4), so that by rotating the screw sleeve (6) its height position relative to the sleeper screws (4) or the single arcuate sleeper screw (4) changes, whereby the height of the rail (1) is variably adjusted.Device for fastening rails according to Claim 1, characterized - in that a lower part (8) is provided below the angle guide plate (7), - in that the angle guide plate (7) forms a sleeper insert with the lower part (8), - in that a space (9) is provided in the sleeper (3), the inner dimensions of which space correspond to the outer dimensions of the sleeper insert, - and in that the sleeper insert is inserted into the space (9) provided in the sleeper (3).Device for fastening rails according to claim 2, characterised in that at least the lower part (8) of the sleeper insert provided below the angle guide plate (7) is formed from a glass fibre reinforced polyamide.

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