EP2133468B1 - Support point and attachment for rails to a wooden sleeper - Google Patents

Abstract

The point has a ribbed plate (1) made of plastic polyamide and anchored on a side of a rail by a fastening bolt (5), and a set of collars (14) arranged in a bottom side of the plate and in engagement with depressions in a wooden tie (2). A set of raised ribs (11) is made of plastic and arranged in the plate for guiding a rail foot (SF). An independent claim is also included for a rail fastening comprising an intermediate layer.

Description

The invention relates to a rail support of a track-guided vehicle for anchoring in a wooden sleeper, comprising a plate as a support for the rail, which is anchored on both sides of the rail by means of the plate cross-fastening screws, the plate has on the underside of the fastening screws surrounding collar, which in complementary shaped Lowering engage in the wooden threshold and a rail fastening using the rail support point.

Railways in mining are often laid on wooden sleepers. The German utility model documents 1534087 U1, 1674890 U1, 1748635 U1 and the German patent DAS 1117626 show rail fastenings on wooden sleepers, in which the rails only on one side of the rail by a steel plate and are pressed down on the other side by a screw on the rail. The hole for the screw has at the top of the wooden threshold a recess into which a collar of the steel plate used for rail fastening can be used, so that the steel plate is held at least one side in the wooden threshold form-fitting.

From the DE 37 15 784 A1 shows an improved steel plate of the type described, in which the steel plate is fastened by three screws on the wooden sill and the rail is held in the manner previously described on the steel plate by an additional screw.

From the US-A-1 834 256 A rail support is known, which contains all the features of the preamble of claim 1.

From the German utility model 7533044U1 a dowel with sharp-edged profiling is known, which in addition by its polygonal outer shape has a tight fit in a hole in a wooden threshold. The dowel is also slotted in the longitudinal direction, so that a sleeper screw to be screwed in has a tight fit and can be screwed in and out several times.

From the DE 83 04 915 U1 is a Spreizdübel known for old threshold renovation, which can be introduced from below into the wooden threshold and otherwise constructed in a similar manner as the previously described dowel. The rail fastening shown together with the anchor is placeable with the aid of another cover on a rib plate for the rail support and the rail is held down using a steel spring.

The invention is based on the problem to realize a non-elastic rail fastening with only two screws per support and to hold the rail foot resiliently, the rail fastening is to be used for wooden sleepers and is carried out correspondingly inexpensive.

The problem is solved by the Ansprunch 1 according to the invention. Further developments of the invention are described in the dependent claims.

The solution comprises a rail support of a track-guided vehicle for anchoring in a wooden sill, comprising a plate as a support for the rail, which is anchored on both sides of the rail by means of the plate cross-fastening screws, the plate has on the underside of the fastening screws surrounding collar, which in complementary shaped Intervene lowering in the wooden threshold, the plate is designed as a ribbed plate with the side of the rail foot and this leading upstanding ribs is made of plastic and the collar is formed as a slotted ring.

By these measures, on the one hand, the benefits of conventional ribbed plates made of steel, on the other hand, the ribbed plate in the wooden threshold is clearly fixed positively in the pilot holes for the mounting screws. The material plastic for the ribbed plate, preferably a high-strength polyamide, is easy to inject and is inexpensive. The gap in the collar is widened by inserting the fixing screw, so that the Ribbed plate in the depressions also receives frictional engagement. This ensures that the side forces exerted by the sinusoidal track of the track-guided vehicles on the rail are introduced via the ribbed plate into the wooden sill; the fastening screw is relieved of lateral bending forces.

The rail support and thus the ribbed plate should have reasons of easier and faster, cheaper mounting on both sides of the rail only a breakthrough and accordingly only one collar for each one fastening screw. Since the collar is preferably designed so that its inner diameter is smaller than the outer diameter of the complementary portions of the fastening screw coming into contact with the collar, the collar is widened by the gap or slot and thus presses into the depression of the wooden sill.

The ribbed plate itself should still have an abutment for the support of the spring for rail fastening, more precisely for holding down the rail foot.

For example, if the ribbed plate is made of the plastic polyamide 6, it can be easily manufactured using conventional injection molding machines and is therefore very inexpensive.

A development according to claim 7 comprises a rail fastening on wooden sleepers with a rail support using the ribbed plate according to the invention and the corresponding arrangement, wherein for anchoring the fastening screw a plastic plug in the wooden threshold is arranged on the underside of the collar and the fastening screw by means of known steel spring the rail tensioned on the rail support via an intermediate layer.

The dowel can be used in the wooden threshold, as the collar still exerts pressure on him, so that he has a secure fit in the wooden threshold. The expansion anchor can, as known per se from the prior art, with external be provided sharp profiles that work into the wood of the wooden threshold and there ensure a secure fit of the fixing screw, once it is screwed. By this pressing the expansion dowel into the wood and the fastening screw can be repeatedly solved and tightened again.

In another embodiment, the wooden threshold can also be provided with a pressed-in dowel, which has an expanding centering downwards. It follows that the dowel is pressed from below into the wooden threshold, whereby it is of course pressed only up to the height of the collar but not necessarily so deep. By its own centering at the end of the dowel, so in the area of the sole of the wooden threshold, it is ensured that the dowel remains in its position even if the fastening screw is screwed in and out several times.

Instead of a symmetrical centering also an asymmetrical shape of the head of the anchor can be chosen to make a corresponding depression in the wooden sill from the bottom. It is also conceivable to use machine screws instead of conventional sleeper screws, as is known from the push-through connections of switch sleepers, in this case. Such a rail fastening can be found with the ribbed plate according to the invention, which also have an abutment for a conventional spring loop for example used in the Deutsche Bahn AG types of springs SKL 1, 14 or 15 or equivalent use, so that on the one hand has standard components for rail fastening and on the other hand can realize a very inexpensive ribbed plate or a very inexpensive rail support.

Fig. 1

eine erste Ausführungsform einer Schienenbefestigung mit einem erfindungsgemäßen Schienenstützpunkt und einer Dübelanordnung für die Befestigungsschrauben;

Fig. 2

eine Seitenansicht der Schienenbefestigung im Schnitt an einer Befestigungsschraube;

Fig. 3

in der linken Bildhälfte eine zweite Ausführungsform der Dübelanordnung in der Holzschwelle und in der rechten Bildhälfte eine dritte Ausführungsform der Schienenbefestigung in einer Holzschwelle.

By means of drawings, exemplary embodiments are intended to explain to the person skilled in the art the tasks, purposes and advantages of the invention in more detail. It shows:

Fig. 1

a first embodiment of a rail fastening with a rail support according to the invention and a dowel assembly for the fastening screws;

Fig. 2

a side view of the rail fastening in section on a fastening screw;

Fig. 3

in the left half of a second embodiment of the anchor assembly in the wooden threshold and in the right half a third embodiment of the rail fastening in a wooden threshold.

Fig. 1 shows a rail S 49 on a ribbed plate (1) according to the invention on which the rail foot (SF) with the interposition of an elastic intermediate layer (ZW) made of plastic is supported. The rail foot is guided laterally by the ribs (11) of the ribbed plate (1). The ribbed plate rests on the wooden sill (2). In the broken part of the portion of the threshold (2) made of wood, the anchoring of the ribbed plate 1 and the rail S49 can be seen. The ribbed plate 1 has in a depression in the wooden sill (2) on an integrally attached collar (14) which projects a little way into the bore. Under the collar 14 is a plastic dowel (3), here a dowel molded from polyamide, which in turn has a collar (33) and sharp-edged profiles (31) on its outer side. As a result, the dowel sits firmly in the wooden sill (2) after it has been pressed into the pilot hole. In one embodiment, the ribbed plate (1) may have been injected together with the dowel (3) as an integral part, here the dowel is shown as an extra component, the pressure on the collar when fitting from above into the pilot hole by means of the collar (14) (33) of the dowel (3) and thereby has a secure hold in the threshold (2). Between the supports (13) for the rail foot (SF) and the ribs (11) of the ribbed plate (1) no tolerance is shown here; in practice, the rail foot will have marginal tolerances laterally and will not abut the ribs (11) consistently.

In the left side of the FIG. 1 Part A is a pre-assembly of the ribbed plate including dowel (3) and screw (5). In this pre - assembly, the screw (5) is screwed in so far that it exerts low pressure on the spring (4), which in turn rests on the rib (11) with the spring bow (51) on the one hand and on the other hand on the rear part (15) Ribbed plates arranged abutment (12) rests. The spring arrangement shown here is known as type SKL 1. However, it can also be another type of attachment SKL 14 or SKL 15 or functionally similar used.

In the right half of the picture, here as version B of the Fig. 1 shown, the screw (5) and the spring (4) is in its position of use. In this case, the spring bow (51) on the rail foot SF on the one hand and on a further abutment on the rear part (15) of the ribbed plate 1 on the other hand, and so holds the rail foot SF down.

In Fig. 2 is a side view, also with broken threshold (2) to see. This representation corresponds to Part B in Fig. 1 , Here it can be seen that the collar (14) of the ribbed plate (1) has a gap or slot (16). When screwing the screw (5) in its end position, as shown, thereby the collar (14) is spread and thus the gap (16) opened. This has the consequence that the collar 14 is additionally fixed with adhesion by the pressure of the screw 5 and not only has positive engagement.

Fig. 3 shows an alternative rail mounting of a grooved rail Ri55 (S1) with two types of attachment; in the left partial image C and in the right partial image D, in each case in the ready-mounted position with rail spring SF pressed down via spring (4).

In the partial image C, the ribbed plate under the collar 14 on a dowel (30), which also has a sharp-edged outer profile. In this case, however, the dowel has been pressed from the underside of the wooden sill (2) in a pilot hole and pressed so far that the centering (301) terminates flush with the wooden sill 2 at its sole.

In part D, a dowel (300) with integrated bolt (50) has also been inserted from below. The dowel (300) has at its lower end (302) on an asymmetric expansion, which also accommodates the polygonal (51) of the screw, thus ensuring a secure fit in the wooden threshold. When bolt (5) at the top end of the wooden sill 2, a machine thread (54) is applied, on which a disc (52) and a nut (53) can be placed to the spring (4) in its illustrated desired position on the rail foot To bring SF. In these two dowel versions, the dowels can be max. be inserted so far from the bottom in the wooden threshold 2, as permitted by the collar (14) of the ribbed plate 1.

Claims (12)

1. A rail support point for a track-guided vehicle for anchorage in a wooden sleeper, comprising fastening screws (5) and a rib plate (1) as support bearing for a rail which on both sides of the rails can be anchored by means of fastening screws (5) engaging through the rib plate (1), wherein the rib plate (1) at the bottom comprises collars (14) surrounding the fastening screws (5), which can engage into complementarily formed depressions in the wooden sleeper, wherein the rib plate (1) is developed with vertical ribs (11) that can be arranged laterally of the rail foot (SF) and which are suitable for its guidance, characterized in that the rib plate (1) consists of plastic and the collars (14) are formed as ring with slit (16).
2. The rail support point according to Claim 1, characterized in that the rib plate (1) on both sides of the rail (S, S1) only comprises one break-through each with collar (14) for fastening screws (5, 50).
3. The rail support point according to Claim 1 or 2, characterized in that the inner diameter of the collar (14) is smaller than the outer diameter of the complementary section of the fastening screw (5, 50).
4. The rail support point according to any one of the preceding claims, characterized in that the rib plate (1) is formed unitarily.
5. The rail support point according to any one of the preceding claims, characterized in that the rib plate (1) comprises a rearward abutment (12, 15) for supporting a spring (4) for the rail fastening.
6. The rail support point according to any one of the preceding claims, characterized in that the rib plate (1) consists of the plastic polyamide.
7. A rail fastening on wooden sleepers with a rail support point according to any one of the preceding claims, characterized in that for anchoring each fastening screw (5) a dowel (3, 30, 300) of plastic is arranged in the wooden sleeper (2) at the bottom of the collar (14) and the fastening screw (5, 50) by means of the steel spring (4) known per se clamps the rail foot (SF) on to the rail support point or the rib plate (1) via an intermediate layer (ZW).
8. The rail fastening according to Claim 7, characterized in that the dowel (3, 30, 300) can be put under compressive pressure through the collar (14).
9. The rail fastening according to Claim 7, characterized in that the dowel (3) is unitarily formed with the rib plate (1).
10. The rail fastening according to Claim 7, characterized by a spreading dowel (3) known per se with outer sharp-edged profilings (31).
11. The rail fastening according to Claim 7, characterized by a dowel (30, 300) pressed into the wooden sleeper (2) from below with centring widening downwards.
12. The rail fastening according to Claim 7, characterized by a dowel (300) that can be inserted in the wooden sleeper (2) with the fastening screw (5, 50) from below with asymmetrical end (302) for placing in a complementarily developed bore in the wooden sleeper (2).

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