FI89291B - ARRANGEMANG VID FAESTANDET AV BANSKENOR TILL STAOLSYLLAR - Google Patents

Description

1 39291

Arrangement for attaching track rails to steel track sleepers

The present invention relates to an arrangement for attaching track rails to steel sleepers, wherein a disc with a possible spacer is placed on the sleeper, a separate lug is attached to the sleeper and the spring element is tensioned against the rail by means of a lug.

The function of the sleepers and the associated rail fastening devices is to keep the rails at the right distance from each other and in the correct position, to transmit the vertical forces caused by train loads and the horizontal forces caused by traffic and thermal stresses to the track embankment.

The materials for sleepers are known as wood, steel and concrete. The advantages of steel sleepers over wooden and concrete sleepers are long and flatness, lightness over concrete sleepers, good tropical and frost resistance, good support on the track in the direction of the rails, ease of manufacturing gears, suitability for mass production, low cost for properly shaped

According to studies 3, the use of steel logs saves gravel in the embankment at about 600 m / km, the logs are so light that they can be handled by man and can be reused as a valuable raw material in steelmaking.

Steel track sleepers are usually U-shaped profiles made by either hot rolling or sheet hot or cold forming, where the bottom of the U forms the cover of the log. It is known e.g. log forms UIC 28, logs manufactured by Thussen AG SW 82, Australian BHP M and W series, logs manufactured by Nippon Steel of Japan and 2,3391 American company Omark Industries. All said logs are arranged laterally with respect to the track embankment by bending the ends of the logs downwards. This work step is cumbersome and requires an extra length of 20-30 cm from the log.

The rails are currently fastened to a steel sleeper either by welding a separate washer to the sleeper cover (Thussen AG) with a bolt 1 (Nippon Steel) or by shaping the platforms and openings in the sleeper cover to thread the fastening springs (Omark). Welded structures are disadvantageous in terms of fatigue strength, bolted joints are an expensive solution and likewise the design of the log cover when hot is an expensive work step.

The object of the present invention is to provide such an arrangement which makes it possible to carry out lateral grip in a relatively simple manner without bending the ends of the log.

To achieve this, the invention is characterized in that the lug is arranged to extend through at least one opening in the log and that an element with a downwardly directed projection is arranged below the log, which lug is held in place and acts as a lateral holding element of the log.

By using separately manufactured lateral restraints, it is technically cumbersome and expensive to bend the log ends, which increases material consumption. The lateral grip of the log is also better than with conventional solutions, because the obstacle rests on the compact crushed stone at the disc and there can be several obstacles in the same log if necessary.

In addition, since the non-retaining barrier can be adapted to support the log at its most stressed point, it is still possible to compromise somewhat on the material thickness of the log. The method according to the invention is suitable for use with steel shapes of different shapes, regardless of their method of manufacture and track spacing. Likewise, the method is suitable for use with different types of fastening springs already on the market by shaping the lug to suit the type of spring. As there are no welding or screw connections in the structure, the assembly can be done on the track site without special tools, if necessary, and the end result is advantageous in terms of the duration of the tiring load.

According to a preferred embodiment of the invention, the lateral holding element is held by at least two lugs on different sides of the rail. In addition, the lateral holding element preferably has a part against the underside of the log with openings through which the arms of the lug extend.

The invention and its other features and advantages are described in more detail below in the form of examples and with reference to the accompanying drawings, in which Figures 1a-d schematically show different embodiments of lateral support elements according to the invention, Figure 2 shows an arrangement according to the invention in rail cross-section, and Figure 3 shows enlarged section along the line AA in Figure 2.

Fig. 1 shows a U-shaped steel track log 1 with an inverted cross-section, provided with laterally held lateral holding bars 2. In Fig. 1a, the lateral holding bars at the track have two downwardly directed branches. In Figures Ib and le, the barrier has only one branch at a time. In Fig. Id, the lateral holding barrier 2 has one branch located in the middle of the element 2, i.e. at the rail.

Referring to Figures 2 and 3, a lug 4 made of plate steel is attached to the sleeper 1 next to the disc 3, and by means of the lug the spring 5 is tensioned so as to press the rail 3 4 89291 downwards by means of a seal 6 inserted therebetween. A washer 7 is still placed between the sleeper 1 and the disc.

According to the invention, an element 2 is fastened under the sleeper 1, which has a downwardly extending branch and which will thus act as a lateral barrier for the sleeper.

The lateral support 2 rests on its upper surface on the inner surface of the sleeper 1 and supports the sleeper at the rail 3, i.e. at the most stressed point of the sleeper. To attach the lateral retaining barrier 2, the lug 4 operates so that one leg of the lug extends twice bent through the opening in the sleeper and the corresponding opening in the lateral barrier, while the other leg extends through the opening in the log and the opening in the lateral barrier. The latter lug branch 12 is bent to the side as shown in Fig. 2 so that it will rest on the underside of the lateral holding barrier 2 and press against it when the lug 4 is tensioned upwards by the action of the spring 5,

Naturally, a lug 4 with springs 5 is mounted symmetrically on each side of the rail. The openings for the lug are so wide that the lug 4 can be threaded in place when the rail is not yet in place.

The lateral support and its downwardly directed arms are suitably formed from the same piece, e.g. by a press. Alternatively, the branch pieces, which may be one or more, are welded to the frame of the lateral barrier.

Figures 2 and 3 show an embodiment of a lateral holding barrier 2 in which the strength of the structure is increased by stiffening grooves 8 pressed into the barrier plate. By shaping the recess 9 printed on the barrier plate, the lugs 4 can be locked in place for securing. By shaping the lugs 4 to be locked to the log 3 and the barrier plate 2, a subassembly - frame 3, barrier plates 2 and lugs 4 - can be performed in advance without the use of springs 5.

Claims (6)

A device for fastening web cables pA rolls of ether, wherein the rail (3) together with an optional intermediate plate (7) is placed on the ailon (1), a separate fastening bracket (4) is secured to the sill or a spring element ( 5) the average mounting bracket is open. towards the rail (3), wherein the fastener bracket (4) extends through an etching through an aperture in the syllable <1>, characterized in that at least one element (2) is provided with a downwardly extending shank (2) under the syllable (1). , which holds in place of the mounting bracket <4) and functions as an idoH lealing element. for Sylia. 2. Device according to claim 1, characterized in that the bracket element (2) holds a plate on the plate of the food terminal on different sides of the rail (3) existing brackets (4). Apparatus according to claim 1, characterized in that the auxiliary shaft of the unit (2) provides a substantially abutting portion of the abutment (1) with openings, through which the legs of the mounting bracket extend. Device according to Claim 3, characterized in that the etminatone part (12) of the fastener bracket which, in the vicinity of the ____ shenano <3) edge, protrudes through the opening in the eo pouring element (2), is bent to abut against The auxiliary housing element is located on the lower side, whereby the force of the shaft spring (5) of the axle (5) pushes the fastening brackets (4) said part (12) against the idler housing element (2). Device according to Claim 1, characterized in that two aid retaining elements <2>, ···, are detected during each syllable (1), at each rail (3). Device according to Claim 1, characterized in that the present invention (2) introduces one into the syllables (1) pro f 1.1 suitable il.Γ profile, in the case of an off-link or in the case of a faatevetaat's ectminetone on down e ig atra cating shank <6).