MXPA06014936A

MXPA06014936A - Angled guide plate and system for fixing rails for rail vehicles.

Info

Publication number: MXPA06014936A
Application number: MXPA06014936A
Authority: MX
Inventors: Dirk Vorderbruck; Winfried Bosterling
Original assignee: Vossloh Werke Gmbh
Priority date: 2004-07-01
Filing date: 2004-08-05
Publication date: 2007-02-28
Also published as: EA010041B1; CA2571704C; BRPI0418935A; EP1761673A1; WO2006002682A1; US20080257972A1; CA2571704A1; EA200602070A1; AU2004321203A1

Abstract

The invention relates to an angled guide plate (4) and to a system for fixing railsfor rail vehicles, said rails being provided with a contact surface (13), by meansof which the angled guide plate (4) is attached to a solid foundation, in particularforming part of a system, in which a spring-loaded element (6) is supported onthe angled guide plate (4) to apply the required retaining force to the rail (2).The inventive angled guide plate (4) permits the abrasive wear on the angled guideplate (4) or the foundation (3) that occurs in prior art to be minimised. To achievethis, at least some sections of the contact surface (13) are covered with an elasticlayer (5).

Description

ANGULATED GUIDE PLATE AND SYSTEM FOR FIXING RAILS FOR FERROUS VEHICLES DESCRIPTION OF THE INVENTION The invention relates to an angular guide plate for fastening rails for ferrous vehicles, this angular guide plate is equipped with a supporting surface by means of which the angular guide plate is placed on a solid foundation in its assembled position. The invention also relates to a system for fastening a rail for rai vehicles, comprising an angular guide plate that can be placed with a support surface on a foundation, and on which angular guide plate a spring element for applying force Retention required to the rails is supported in the assembly position. Angular guide plates and fastening systems of this type are known in many varieties (see, for example, the electronic address http://www.vossloh-rail-systems.de) or DE-AS 1 954 008, EP 0 231 304 B l and DE 33 34 1 19 Al).

The purpose of the angular guide plates is based on the support of the spring element, which exerts the required elastic retention force on the rail shoe, in the fully assembled state. At the same time, the angular guide plate provides a lateral support for the rail shoe by which the rail is maintained in the prescribed longitudinal alignment respectively. This produces a firm and exactly aligned seat of the angular guide plate on the respective foundation required.

The known angular guide plates and the fastening systems equipped with them have been tried and tested in operation. However, under certain operating conditions an increased wear has been found in the region of the support surface, with which the angular face is supported on the foundation supporting the rail with complete fastening system. This wear manifests itself in the removal of material from the support surface of the angle plate and / or the support area of the foundation on which the angle plate rests.

It has been determined that the cause of the increased wear is the particles, which pass between the supporting surface of the angular guide plate and the support area of the foundation. This phenomenon of wear occurs in a particularly dramatic way in fastening systems in which the rails are fastened to concrete sleepers and which are used in regions where high levels of dust are produced as well as possible sand clouds, etc.

The object of the invention therefore consists in providing an angular guide plate in which the risk of abrasive wear in the region of its support surface is minimized. The intention is also to provide a system for fastening rails in which, with simple means, the risk of abrasive wear occurring in the region of the angular guide plate even under unfavorable operating conditions is reduced to a minimum.

With respect to an angular guide plate for fastening rails for rai vehicles, this angular guide plate is equipped with a supporting surface by means of which the angular guide plate is placed on a solid foundation in its assembled position, this objective is achieved any time the support surface is coated at least in certain sections with an elastic layer.

In the region of its supporting surface an angular guiding plate according to the invention comprises an elastic layer by means of which it rests in its assembled position on the support area of the foundation bearing the angular guiding plate. This elastic layer prevents the creation of a space between the support surface of the angular guide plate and the support area of the foundation even when the rails that are driven on the angular guide plate are moved, due to the weight of the rai vehicle and the movements dynamic associated with the same of the rails, in the horizontal or vertical direction in relation to the foundation.

Surprisingly it has been found that the penetration of particles in the critical region between the angular guide plate and the substrate can then be avoided in a durable manner. Even more, the elastic layer dampens the effect of these particles which, despite the seal created by the invention, pass within the region between the angular guide plate and the foundation. As a result, the invention then minimizes the abrasive wear of the angular guide plate or foundation that occurs in the prior art.

In a system for fastening a rail for railway vehicles, a system that is equipped with an angular guide plate that can be placed with a supporting surface on a foundation and on which a spring element for applying the required retaining force to the rail is supported in the assembly position, the objective is correspondingly achieved therefore in that the system comprises an elastic layer for its insertion between the supporting surface of the angular guide plate and the solid foundation.

Practical tests have shown that with a rail fastening system built in this way the elastic layer between the angular guide plate and the foundation does not have an adverse effect on the retention of the rail or on the safety and accuracy of the fastening, but rather on its place only makes positive contributions to the life of the fastener system constructed in such a manner according to the invention. Since the purpose of the elastic layer is only to seal a space that could potentially occur between the angular guide plate and the foundation during operation, the elastic layer must be configured in such a way that in the assembly position it does not greatly influence the flexibility of the fastening system in which it is used respectively.

As a function of the respectively processed material, it is therefore sufficient, as a rule, that a thin elastic layer be used, of which the thickness is much less than the thickness of the angular guide plate in the region of the supporting surface . The thickness of the elastic layer can then be limited, for example, to very much at 10% of the average thickness of the angular guide plate in the region of the support surface.

As a result of the fact that the elastic layer does not have a spring function, it is also preferably configured in such a way that it is compressed as much as possible by the assembly forces acting on the angular guide plate in its assembly position. A particularly good effect of the elastic layer results then if it is completely, or at least almost completely, compressed when the angular guide plate is completely assembled. As a rule it is sufficient that, in the regions in which spaces can be formed between the support area and the support surface during the practical operation, the supporting surface of the angular guide plate is coated by the elastic plate. It is then conceivable, for example, to coat only the edge regions of the support surface which are critical in this respect with a thin elastic strip which then constitutes the elastic layer. A particularly reliable transfer of the forces acting on the angular guide plate during assembly and operation can be achieved however, if the elastic layer covers the entire support surface.

All materials, of which the elasticity is retained even after a relatively long compression, are suitable as a material for the elastic layer. As a result, the elastic layer is preferably made of a polyurethane, a rubber or any other elastomeric material. These materials are economical to obtain and stretch fast enough, even in the case of the formation of a space for a short time between the angular guide plate and the foundation, to prevent the penetration of particles, such as dust or sand, into the critical regions.

To facilitate the assembly of the angle guide plate according to the invention, the elastic layer can be permanently connected to the angular guide plate. This can be achieved, for example, by suitable mold parts, etc., which maintain the elastic layer positively and / or non-positively on the angular guide plate. It has been shown that it is particularly suitable, however, for the elastic layer to be connected to the support surface of the angular guide plate with integral adjustment, for example by glue or vulcanization. This type of integral connection between the elastic layer and the angular guide plate also prevents the particles from passing into the region in the elastic layer and the support surface and cause wear at this point.

The invention can be used particularly effectively in systems in which the rails are fastened to a sleeper that forms the solid foundation for the angular guide plate. This applies in particular if the sleeper is made of a concrete material. It is precisely in the case of concrete sleepers, or sleepers produced from comparable materials that are particularly sensitive to abrasive wear, that the advantages achieved by the arrangement according to the invention of an elastic layer between the angular guide layer and the sleeper They are proven.

The invention will be described in more detail hereinafter with reference to drawings illustrating one embodiment. In the drawings, schematically in each case: Figure 1 shows in longitudinal section a system for fastening a rail for an iron vehicle.

Figure 2 shows an angular guide plate in a bottom view.

The system 1 is used to fasten a rail 2, of which only the edge of the skate of the rail facing system 1 is shown in figure 1. It comprises a concrete sleeper 3, an angular guide plate 4, an elastic layer 5, as a spring element for the production of the retaining force required a tightening clamp 6, and a tightening screw 7 for tightening the clamping clamp 6.

The concrete sleeper 3 comprises a level support area 8 in which, in the region of its lateral end, a channel 9 is formed. The lateral end region joining the channel 9 of the support area 8 forms the region on the which angular guide plate 4 rests in the assembly position. An indentation, in which a plastic pin 10 for the tightening screw 7 sits, is formed in a central position in this end region.

On its upper side the angular guide plate 4, which is configured in a manner known per se, has mold parts 1 1 which guide the tightening clamp 6 in its assembled position and ensure reliable transfer of the holding forces to the rail track 2. Starting from its upper side, a passage opening 12 is also formed in the angular guide plate 4, through which passage opening 12 the tightening screw 7 for tightening the clamping bracket 8 is guided during the assembly in a manner that is also known per se, in order to screw the tightening screw 7 into the plastic material pin 10 of the sleeper 3.

On the underside of the angle guide plate 4 is a level support surface 13 which in the assembly position is limited in its edge facing away from the rail 2 by a bulge 14 extending along this edge. The bulge 14 also carries projections 15, of which the transverse shape is adapted to the transverse shape of the channel 9.

Attached to the support surface 13 is the thin elastic layer 5 covering the support surface 13 completely, while leaving the passage opening 12 and cavities 16 free. The cavities 16 are formed in the support surface 13 at the edge associated with the rail 2 in the assembly position.

The elastic layer 5 is made of a highly elastic, thin and porous polyurethane foam, from which the elasticity is such that it immediately automatically loosens and stretches to the initial thickness of the elastic layer 5 again even in the case of a Relieve load that occurs suddenly after a relatively long compression. This initial thickness is at most 8% of the average thickness of the angular guide plate 4 in the region of its support surface 13.

To assemble the system 1 the angular guide plate 4 is placed on the support area 8 in such a way that the projections 15 formed on the lower side of the angular guide plate 4 are positively clamped in the channel 9 and in this way secure the plate angular guide 4 against a displacement in the longitudinal direction of the sleeper 3. The support surface 13 rests in the end region of the support area 8 on the elastic layer 5 in such a way that the passage opening 12 of the angular guide plate 4 is aligned with pin 10 of sleeper 3.

The tightening clamp 6 which is conventionally constructed in a form of is subsequently placed on the angular guide plate 4 in such a way that its retaining arms 17 rest with their free ends on the track of the rail 2. When screwing the tightening screw 7 on the pin 10 the clamping bracket 6 is fixed until the required resilient holding force is exerted on the rail shoe 2.

During the tightening course of the tightening clamp 6 the elastic layer is completely compressed to the extent that its elasticity no longer has an effect on the complete elasticity of the system 1. Yes, due to movements in the system 1 that occur when a vehicle ferrous (not shown) travel on the rail 2, the angular guide plate 4 is raised from the support area of the concrete sleeper 3, the elastic layer 5 stretches and fills the space formed in this case between the support area 8 and the support surface 13 of the angular guide plate 4. This prevents particles from accumulating between the angular guide plate 4 and the concrete sleeper 3 and causes abrasive wear at this point.

Thanks to the seal according to the invention then achieved by the elastic layer 5 between the angular guide plate 4 and the concrete sleeper 3, a system 1 according to the invention is particularly suitable for fastening rails 2 in dry regions in which a rail body equipped with rails 2 and systems 1 is exposed to severe sand or dust clouds.

LIST OF REFERENCE NUMBERS 1 system to hold a rail 2 2 rail, of which only the rail skate is shown in figure 1 3 concrete sleeper 4 angular guide plate 5 elastic layer 6 clamping clamp 7 tightening screw 8 support area 9 channel 10 plastic pin 1 1 mold parts guiding the clamp 6 in its assembled position 12 passage opening 13 support surface 14 bulge 15 projections 16 cavities 17 retaining arms of tightening clamp 6

Claims

CLAIMS 1. An angular guide plate for fastening rails (2) for ferrous vehicles, angular guide plate which is equipped with a support surface (13) by which the angular guide plate (4) is placed on a solid foundation in its assembled position, further characterized in that the support surface (13) is coated at least in certain sections with an elastic layer (5). 2. The angular guide plate according to claim 1, further characterized in that the thickness of the elastic layer (5) is at most 10% of the average thickness of the angular guide plate (4) in the region of the support surface (13) . 3. The angular guide plate according to any of the preceding claims, further characterized in that the elastic layer (5) is substantially completely compressed by the assembly forces acting on the angular guide plate (4) in its assembled position. 4. The angular guide plate according to any of the preceding claims, further characterized in that the elastic layer (5) covers the support surface (13) completely. 5. The angular guide plate according to any of the preceding claims, further characterized in that the elastic layer (5) is made of a polyurethane, a rubber or other elastomeric material. 6. The angular guide plate according to any of the preceding claims, further characterized in that the elastic layer (5) is integrally connected to the support surface (13) of the angular guide plate (4). 7. A system for fastening a rail (2) for ferrous vehicles, characterized in that it comprises an angular guide plate (4) that can be placed with a support surface (13) on a foundation, and on which a spring element for applying the The retaining force required for the rail (2) is supported in the assembly position, characterized by an elastic layer (5) for insertion between the support surface (13) of the angular guide plate (4) and the solid foundation. 8. The system according to claim 7, further characterized in that the elasticity of the elastic layer (5) is coordinated in such a way that the elastic layer (5) is compressed substantially completely when the system (12) is completely assembled. 9. The system according to claim 7 or 8, further characterized in that it comprises a sleeper (8) that forms the solid foundation for the angular guide plate (4). 10. The system according to claim 9, further characterized in that the sleeper (8) is made of a concrete material.

1. Use of an angular guide plate (4) constructed in accordance with any of claims 1 to 6, in a system (1) constructed in accordance with any of claims .7 to 10.