Modular fastening for railway crossings

Abstract

A modular fastening for track crossings includes a lower plate, an upper plate and an outer shoulder at each end of the plates, attached by means of adhesive bonding, which include means for anchoring the fastening on a surface. The upper plate includes a smooth central segment located between two grooved areas in correspondence with the ends of the upper plate. The present invention also includes two inner shoulders with lower grooves which can engage and fit into the grooved areas of the upper plate, where said inner shoulders include means for housing and securing an elastic fastening clip for fastening a railway rail.

Claims

1. A modular fastening for track crossings, comprising: a lower plate on which there is placed an upper plate, and an outer shoulder, located at each end of the plates, comprising means for anchoring the fastening on a support surface, wherein: the plates and the outer shoulders are attached to one another by an adhesive, thereby forming a single-block assembly, the upper plate comprises a smooth central segment located between two grooved areas located in correspondence with the ends of the upper plate, the fastening comprising two inner shoulders comprising lower grooves which can engage and fit into a plurality of positions on the grooved areas of the upper plate, where said inner shoulders comprise means for housing and securing an elastic fastening clip for fastening a railway rail; and wherein the upper plate further comprises a longitudinal channel running from one grooved area to the opposite grooved area and passing through the smooth central segment, where the inner shoulders in correspondence with the lower grooves comprise a guide bridge-like channel.

2. The modular fastening according to claim 1, wherein the lower plate and upper plate are metal plates.

3. The modular fastening according to claim 1, wherein the guide bridge-like channel of each inner shoulder comprises a lower projection which can be housed in and moved in a guided manner along the longitudinal channel of the upper plate.

4. The modular fastening according to claim 1, wherein the smooth central segment of the upper plate has a height greater than the height of the grooved areas.

5. The modular fastening according to claim 1, wherein the smooth central segment of the upper plate comprises on the upper portion thereof a base plate for the rail, where said base plate comprises two larger sides and two smaller sides, the length of each of the larger sides coinciding with the length of the smooth central segment of the upper plate.

6. The modular fastening according to claim 5, wherein the smaller sides of the base plate are drawn in with respect to the larger sides, defining respective fitting areas with respect to each of the inner shoulders.

7. The modular fastening according to claim 1, wherein the smooth central segment of the upper plate comprises on the upper portion thereof a base plate for the rail, where said base plate comprises two larger sides and two smaller sides, the length of the smooth central segment being smaller than the length of each of the larger sides of the base plate.

8. The modular fastening according to claim 1, wherein the means for housing the elastic clip comprise a longitudinal cavity made on one side of the inner shoulders for supporting the curved outer areas of the elastic clip, a central raised area in said longitudinal cavity separating the curved outer areas and acting as a lateral stop for said outer areas, and a central through hole for the screw for fastening the elastic clip to the rail and the actual inner shoulder to the upper plate.

9. The modular fastening according to claim 8, wherein the inner shoulders comprise a prolongation surface which allows fastening a rolled iron or steel plate to the inner shoulder itself.

Description

DESCRIPTION OF THE DRAWINGS

(1) To complement the description that is being made and for the purpose of aiding to better understand the features of the invention according to a preferred practical embodiment thereof, a set of drawings is attached as an integral part of said description in which the following has been depicted with an illustrative and non-limiting manner:

(2) FIG. 1 shows a schematic perspective view of an embodiment of the upper plate comprised in the modular fastening of the invention.

(3) FIG. 2 shows a schematic perspective view of an embodiment of the fastening, in which the upper plate is attached by means of adhesive bonding to the lower plate and the end shoulders, an upper base plate additionally being depicted.

(4) FIG. 3 shows two schematic perspective views, in which FIG. 3a) depicts a bottom perspective view and FIG. 3b) depicts a top perspective view of the inner shoulders comprised in the fastening of the invention.

(5) FIG. 4 shows a schematic perspective view of the embodiment of the modular fastening depicted in FIG. 2 in which the inner shoulders as well as the clips and coach screws for fastening the plate to a base are assembled.

(6) FIG. 5 shows a schematic perspective view such as that of FIG. 4 in which a rail corresponding to the track frog has additionally been depicted.

(7) FIG. 6 shows an elevational perspective view of the fastening of the invention, in which the housing of the elastic clips in the housings comprised in the inner shoulders can be seen in particular.

(8) FIG. 7 shows two schematic perspective details of the area corresponding to one of the inner shoulders which in FIG. 7a) has been depicted in a position in which the distance between said inner shoulders is maximized, whereas in FIG. 7b), said distance is reduced with respect to the position depicted in FIG. 7a).

(9) FIG. 8 shows a schematic perspective view of an embodiment variant of the inner shoulder comprising a second or prolongation surface for a rolled iron or steel plate.

PREFERRED EMBODIMENT OF THE INVENTION

(10) In view of the drawings that have been described, it can be seen how in one of the possible embodiments of the invention the modular fastening for track crossings proposed by the invention comprises a lower plate (1) on which there is placed an upper plate (2), both being made of metal, and an outer shoulder (3), located at each end of the plates (1, 2), comprising means for anchoring the fastening on a support surface (A), where the plates (1, 2) and the outer shoulders (3) are attached by means of adhesive bonding, forming a single-block assembly.

(11) As can be seen in FIG. 1, the upper plate (2) comprises a smooth central segment (2) located between two grooved areas (2) located in correspondence with the ends of the upper plate (2).

(12) The fastening comprises two inner shoulders (4), such as the one depicted in FIG. 3, which are independent parts that in turn comprise lower grooves (4) which can engage and fit into a plurality of positions on the grooved areas (2) of the upper plate (2), where said inner shoulders (4) comprise means for housing and securing an elastic fastening clip (B) for fastening a railway rail (C) by means of a coach screw. In other words, the lower grooves of the inner shoulders are suitable for engaging the grooves of the upper plate in multiple positions.

(13) As can be seen in FIG. 1, the upper plate (2) comprises a longitudinal channel (2) running from one grooved area (2) to the opposite grooved area (2) and going through the smooth central segment (2), where the inner shoulders (4) comprise between the lower grooves (4) a guide bridge-like channel (4) and a lower projection or protrusion (4) which can be housed in and moved in a guided manner along the longitudinal channel (2) of the upper plate.

(14) FIG. 1 shows that the smooth central segment (2) of the upper plate (2) has a height greater than the height of the grooved areas (2).

(15) On one hand, according to FIG. 4 it is contemplated for the smooth central segment (2) of the upper plate (2) to comprise on the upper portion thereof a base plate (6) for the rail (C), where said base plate (6) comprises two larger sides and two smaller sides, the length of each of the larger sides coinciding with the length of the smooth central segment (2) of the upper plate (2).

(16) On the other hand, according to FIG. 6 it is contemplated for the smooth central segment (2) of the upper plate (2) to comprise on the upper portion thereof a base plate (6) for the rail (C), where said base plate (6) comprises two larger sides and two smaller sides, the length of the smooth central segment (2) being smaller than the length of each of the larger sides of the base plate (6), even allowing the upper base plate (6) not to be centered with respect to the smooth central segment (2), providing greater variability in terms of being adapted and adjusted to the track requirements.

(17) In both cases, the smaller sides of the base plate (6) are drawn in with respect to the larger sides, defining respective fitting areas with respect to each of the inner shoulders (4).

(18) FIG. 3b) shows that the means for housing the elastic clip (B) comprise a longitudinal cavity (7) made on one side of the inner shoulders (4) for supporting the curved outer areas (B) of the elastic clip (B), a central raised area (8) in said longitudinal cavity (7) separating the curved outer areas (B) serving as a lateral stop for the outer areas, as well as a central through hole (9) for the screw for fastening the elastic clip (B) to the rail (C) and the actual inner shoulder (4) to the upper plate (2).

(19) On the other hand, FIG. 8 depicts an embodiment in which the inner shoulders (4) comprise a prolongation surface (5) which allows fastening a rolled iron or steel plate (D) to the inner shoulder (4) itself.