KR20160100310A - Resilient rail support block assembly - Google Patents

Abstract

A prefabricated resilient member for in a rail support block assembly, which assembly is adapted to be mounted embedded in or mounted on a railway substructure. The assembly comprises said resilient member (1) as well as a block having a top (10), a bottom and peripheral wall, said block being adapted for fastening one or more rails on the top of said block. The prefabricated resilient member is adapted to be fixed to said block so as to extend under said bottom of the block as well as around at least a lower region of the peripheral wall of the block. The prefabricated resilient member (1) has an outer tray (2) and inner tray (3) arranged within said outer tray, and said prefabricated resilient member comprises a resilient intermediate structure (5) being arranged between said outer and inner trays.

Description

RESILIENT RAIL SUPPORT BLOCK ASSEMBLY < RTI ID = 0.0 >

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to the field of rail support rail for trains, subways, trams,

In the field of railway technology, systems have been developed to reduce noise and vibration in particular.

In known arrangements, the rails of the railway are supported by rail-bearing blocks arranged at regular intervals in the lower part of the rail. The block is embedded in a concrete slab. Slabs are generally injected around the block, but it is also known to place the block in the corresponding cavities of the slab. In order to reduce the noise and vibration generated when the train moves along the railroad, an elastic member is located between each block and the slab.

In the known system developed by the present applicant, the elastic rail support block assembly is manufactured so that it can be installed directly on the rail to be supported. The assembly includes a concrete block provided for securing the rail to the top of the block. The assembly further includes a lower portion of the lower portion of the block and a concrete drake extending away therefrom, as well as around and away from the side wall lower portion of the block. Elastic members, such as those sold under the trade name Corkelast, are injected between the concrete tray and the block during assembly. In the course of the polymerization (with the elasticity remaining), the elastic members are adhered to the concrete block and the concrete tray, thereby binding the tray to the block. When installing the rails, the known rail support block assemblies are positioned and bound together at regular intervals along the rails. After that, the concrete slab is injected, and the concrete tray is built in and integrated with the slab. Such a method is known to those skilled in the art as "fix and forget method ".

For the installation of very long railways, a very large number of said railway support block assemblies are required. Because of their weight, it is desirable to prepare the assembly production in a concrete manufacturing plant relatively adjacent to the rail installation location. In practice, this approach faces difficulties in manufacturing railway support block assemblies. In particular, it has been found that, in known assemblies, it is difficult to obtain an acceptable quality of assembly in connection with the adhesion of the components. Specifically, it has been found that it is difficult to control the adhesion between the concrete block, the concrete tray and the inflatable resilient member, because a very extensive pre-treatment step of the concrete surface is required, for example.

Applicants have considered their adhesion to be important because the elastic members of the assembly are repeatedly compressed and relaxed during their use. If the adhesion is damaged, or if the adhesion is completely lost, the block is "separated" from the slab. In this case, the rail seems no longer desirable because it is no longer connected to the slab in a satisfactory manner. Moreover, the water / fuel or other liquid can no longer be penetrated between components that are not sufficiently coupled, and a "pump action" may occur as the train moves. This results in noise and vibration, and wear and damage occur and repair is required.

EP 919 666 discloses a system according to claim 1 in which the rail support block is located, for example, on a prefabricated tray of plastic or concrete. The tray is built into the concrete slab. An elastic member is disposed inside the tray, particularly between the bottom of the tray and the block, and between each side of the tray and the opposite side of the block. Fixing of the tray and the block including the elastic member is accomplished by a clamping force formed by precompression of the elastic member by the block when the block is placed on the tray.

In a system known from EP 919 666, for example, if a block is damaged, it is determined that the block can be removed from the tray embedded in the slab in order to exchange the block. This removal can be done simply by lifting the block from the tray. A number of alternative solutions have been proposed, including a method of injecting a silicon filler into the space between the block and the tray with an associated resilient member supporting the block to prevent water or the like from penetrating between the tray and the block.

It is an object of the present invention to provide one or more means for obtaining an improved elastic rail support block assembly and / or an improved manufacturing method thereof.

It is another object of the present invention to provide a manufacturing method which can be economically performed with high quality of the manufactured assembly.

The present invention provides a prefabricated resilient member for an elastic rail support block assembly, wherein the assembly is embedded in or installed on a railway undercarriage, the assembly comprising an upper wall, a lower wall, and a side wall Wherein the block is provided for fixing at least one rail at an upper portion of the block and the prefabricated elastic member is fixed to the block so as to surround at least the lower region of the side wall of the block, As shown in FIG.

According to the present invention, the prefabricated elastic member includes an outer tray and an inner tray disposed in the outer tray, wherein the prefabricated elastic member further comprises an elastic intermediate structure disposed between the outer and inner trays.

The present invention relates to a method of manufacturing a rail support block assembly, wherein after the elastic member of the present invention is preassembled and the block is manufactured, the block is secured to the inner tray of the elastic member.

In a preferred practical embodiment of the above production process, the elastic member is manufactured in a company specialized in elastic intermediate structures applied to a first location, preferably a railway, and the block is located in a second, remote location, It is manufactured by the company. The block is then preferably located in the inner tray of the elastic member in the second location, and the block is bonded to the inner tray. The finished rail support block assembly is then moved to the rail installation location.

Preferably, the block is secured to the inner tray by an adhesive method such as, for example, injecting an adhesive or mortar, such as an appropriate epoxy, between the block and the inner tray.

An advantage provided by the elastic member according to the present invention is that the manufacture of the member can be performed by a specialized company in a controlled environment. In this way, a good quality of the elastic member can be ensured. It has been found that the process steps of forming the adhesion between the inner tray and the block are less complex and more sensitive than the above described adhesion between the injectable resilient member and the concrete component as discussed in the applicant's known assembly. Thus, the bonding may be performed at the place where the concrete block is produced, or even elsewhere (e.g., a railway installation site).

In Fig. 1, an example of a prefabricated elastic member 1 provided for integration thereof, particularly in a rail support block assembly, is shown.

In the illustrated embodiment, the prefabricated elastic member 1 includes an outer tray 2 and an inner tray 3 disposed inside the outer tray 2.

Here, the trays 2, 3 generally include a lower portion (here a rectangular lower portion) and a raised side wall, with the upper portion open.

It will be appreciated by those of ordinary skill in the art that other types of common trays are possible, such as, for example, elliptical contours, trapezoidal contours, hexagonal blocks, etc., depending on the shape of the block.

The inner tray 3 has a size that can be separated from the outer tray 2 in all directions. In practical terms, the distance between the main surfaces of the inner and outer trays 2, 3 is preferably at least 5 mm, more preferably at most 20 mm, and most preferably at most 15 mm.

The elastic intermediate structure (5) is disposed between the outer and inner trays (2, 3). The elastic intermediate structure 5 interconnects the trays 2 and 3 so as to form one assembly with the trays and preferably the elastic intermediate structure 5 is provided on each of the trays 2, As shown in FIG.

In a preferred embodiment, the elastic intermediate structure 5 is formed by placing the trays 2, 3 apart from one another and injecting a suitable elastomeric member between the outer and inner trays 2, 3 (or in a similar manner) . The members are injected (or in a similar manner) between the trays 2, 3 so that the members are integrally coupled to the main surface of the inner and outer trays 2, 3, , Water, or the like.

The elastic intermediate structure 5 thus interconnects the trays 2 and 3 to form one prefabricated resilient member 1 and is also capable of being mounted on a block (not shown) when the assembly is built into a slab or installed in a different substructure 10) and / or vibration reduction support.

The outer and inner trays 2, 3 are spaced apart from each other with no contact point, and the elastic intermediate structure 5 allows the inner tray (which receives the block) to make elastic movements in all directions.

Preferably, the inner and outer trays 2, 3 are more rigid than the elastic intermediate structure 5.

In fact, the trays 2, 3 can be made from plastic, (fibrous) reinforced plastic, composite plastic, metal, or even wood. A plastic member is preferred, and the trays 2, 3 are formed, for example, by injection molding, or preferably from a plastic sheet member. The plastic member may be, for example, a polyurethane polymer or an ABS polymer.

The elastomeric member and trays 2, 3 of the elastomeric intermediate structure 5 are preferably designed and selected so that a strong bond or bond is made between the inner surface of the tray and the elastomeric member. For example, the elastomeric member may be a polyurethane elastomer such as, for example, Corkelast produced by the applicant.

Generally, Figure 1 shows a sandwich-type prefabricated elastic member with an elastic intermediate structure 5, which is an elastomeric member layer, laid over the trays 2,3.

Here, the elastic intermediate structure 5, which is an elastomeric member layer, is provided in order to provide elasticity during its use. For example, the elastic intermediate structure 5 (and the resilient assembly incorporating it) is described in UIC Code 700, "Classification of lines and resulting load limits for wagons ", in related codes of the International Union of Railways It must be available on railways as specified.

The inner side of the trays 2 and 3 may be made of a surface that improves adhesion (e.g., a mounting surface) as shown and / or may be formed in a form that enhances adhesion, such as ribs, lugs, .

The inner side of the trays 2, 3 can be subjected to pretreatment for adhesion improvement, for example, mechanical treatment or chemical treatment.

The trays 2, 3 may be made of the same or different members. For example, the inner tray may be made of plastic and the outer tray may be made of metal. The metallic outer tray may exhibit strong resistance to damage and / or penetration of the outer tray, which may affect the function of the resilient member. In addition, a metal (e.g., steel) outer tray may be selected to allow the tray to be installed or incorporated into a steel structure such as a steel plate or steel member such as a steel bridge. The steel outer tray may be provided with a flange, such as a flange, which may be coupled to the steel structure.

In addition, the wall thickness of the trays 2, 3 may be the same or different depending on, for example, the member selected and / or the application.

The trays 2, 3 or one of them may be made of an electrically insulative member. Further, the elastic intermediate structure 5 may have electrical insulation.

It can also be seen that preformed elastic members, such as elastic mats or elastic plates of a suitable foam, can be placed between the trays 2, 3 and adhered to both trays using a suitable adhesive.

It is noted that the use of one or more preformed flexible foam members between the bottom of the tray allows the support of a softer rail.

When one or more preformed resilient members are used between the trays, the remaining space between the trays 2, 3 is filled with an injectable elastomeric member, as described in connection with structure 5 in Fig.

Figure 1 shows an example of a railway support block and an exemplary prefabricated resilient member according to the invention;
Figure 2 shows an assembly according to the invention comprising an elastic member and the block of Figure 1 with an elastic member secured to the block;
Figure 3 shows a rail with an assembly of Figure 2 before being impregnated into a concrete slab;
Figure 4 shows the rail of Figure 3 with an assembly embedded in a concrete slab;
5 shows a rail system with a slipper supported by a prefabricated elastic member according to the invention;
Figure 6 shows a rail system with a railway switch slipper supported by a prefabricated elastic member according to the invention;
7 shows a rail system having slippers supported at both ends by a prefabricated elastic member according to the present invention;
8 shows an example of an inner tray for a prefabricated elastic member according to the present invention; And
Figure 9 shows an example of an outer tray used in combination with the inner tray of Figure 8;

BRIEF DESCRIPTION OF THE DRAWINGS Fig.

Figure 1 shows an example of a railway support block 10. The block 10 is made of an injectable member injected into a suitable frame at the production site. Preferably, the block 10 is made of concrete. Other concrete embodiments of the block, including a reinforcing member, are identified. Also, blocks such as, for example, cast blocks or welded steel blocks may be made of other materials such as steel.

The block 10 has a top wall, a bottom wall and a side wall. Here, the block 10 is provided as a single block for supporting a single rail of a railway, but may also be designed as a duo-block supporting two or more rails (such as railway slippers). Here, the block 10 has a considerable height.

In order to engage the rails to the top of the block 10, one or more rail binding members 15 are provided in the block 10. Further, the elastic plate 16 is located on the top of the block 10 to be positioned at the bottom of the rail.

2 shows that the block 10 is located on the inner tray 3 of the prefabricated elastic member 1. Here, it is seen that the upper portion of the block 10 is vertically spaced from the upper edge of the trays 2, 3.

In Figure 2 it is shown that the block 10 is fixed to the inner tray 3 preferably by applying an appropriate adhesive 17 between the inner tray 3 and the block 10. Preferably, the adhesive is hardened and hardened in the cured state, so that the inner tray 3 becomes integral with the block 10. Such adhesives are well known to those skilled in the art and are sold, for example, under the trade name DEX.

Preferably, the internal area of the inner tray 3 is selected to accommodate the various areas of the block 10 as a result of the block production method.

In Figure 3, it is seen that the assembly of Figure 2 is assembled to the rail 20. In practice, the rail 20 is secured in a preferred position by the temporary support.

In Fig. 4, a concrete or asphalt slab 25 is injected under the rail 20 to impregnate the slab 25 with the elastic member 1.

To enhance impregnation of the outer tray 2 with the slab 25, the outer tray 2 may have a rugged contour and / or a fixed form (e.g., lip, lug, bolt or pin projecting from the tray 2) Etc.).

In a practical embodiment, the outer tray and / or the inner tray inside may be roughened by a coarse mineral coating such as crushed gravel, rock, and the like. This comminuted material may be fixed to each side of the tray with an adhesive such as an epoxy.

It is recognized that the outer tray 2 is made so that the outer tray impregnated with the inner side surface or a portion thereof can not be discharged upward from the slab.

The tray is provided with one or more perforated holes.

In an embodiment not shown, the assembly is not impregnated, but is bound to a substructure such as a substructure plate (metal or concrete) or beam.

In Figure 5, the block is integrated as a slipper 30 with rail fasteners to support two parallel rails 31 and a slipper 30 made, for example, of concrete or wood. The elastic member (40) according to the present invention has a shape and a size suitable for the slipper (30). The system includes a concrete base 50, an assembly of resilient members 40 and a slipper 30 joined by pouring a curable material 55, such as concrete, around the member 40 The base 50 includes a hole for receiving the assembly).

6, the slipper 60 is a railway switch slipper having four rail fixing members 6 for four rails. The member 40 is adapted to the size and shape of the slipper 60.

7, according to the present invention, the slipper 30 is supported by elastic members 70 at both ends thereof. The elastic member 70 includes inner and outer trays having a lower wall and a side wall extending around the end of the slipper.

8 shows the outer tray 80 of the prefabricated elastic member according to the present invention. The tray 80 is injection molded from a suitable plastic material. The outer side of the tray 80 includes a binding member 81 embedded in the hardenable material injected into the periphery of the tray 80. [

Figure 9 shows an inner tray 90 that is positioned within the tray 80 with an insert of the elastic intermediate structure as disclosed herein. As shown, the inner tray 90 is provided with binding members 91 and 92 for improving the binding of the mortar or other adhesive connecting the inner tray 90 and the block. As shown, the binding member is molded with the tray. The binding members 91, 92 also include a wall surface spaced inwardly from the tray and are connected to the tray by a lip.

Claims (1)

A block having an upper surface, a lower surface and a side surface and fixing at least one rail at the upper surface;
A prefabricated resilient member for a rail support block assembly comprising a prefabricated resilient member for securing at least a portion of the block,
Wherein the prefabricated elastic member is formed to fix at least a part of a bottom surface and a side surface of the block,
Wherein the prefabricated elastic member includes an outer tray (2) having an open top and a side wall formed therein, and an inner tray (3) spaced apart from the outer tray in the outer tray and having an open top and a side wall,
And an elastic intermediate structure (5) disposed between the side walls of the outer and inner trays, the elastic intermediate structure being arranged to interconnect the outer and inner trays and coupled to side walls of the outer and inner trays. Elastic member.

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