Plate element for a fastening point at which a rail, which is provided for rail vehicles, is fastened and fastening point

Abstract

A plate element for a fastening point, at which a rail for rail vehicles is fastened to a fixed base. The plate element has an opening leading from the upper side thereof associated with the rail to be fastened to the underside thereof associated with the base, through which a fastening element for fastening the plate element onto the base is guided during use, which engages with an anchor fitting countersunk into the base, and a fastening point at which a rail for a rail vehicle is fastened to a fixed base. The plate element enables the fastening of a rail onto a fixed base, ensuring optimum electrical insulation. This is achieved by a ring element made from a flexibly resilient material sitting in the region of the mouth of the opening associated with the base.

Claims

1. A plate element for a fastening point in which a rail provided for rail vehicles is fastened to a base, wherein the plate element comprises an opening leading from an upper side of the plate element associated with the rail to be fastened to an underside of the plate element associated with the base, wherein a fastening element for fastening the plate element onto the base is guided through the opening during use, wherein the fastening element engages with an anchor fitting countersunk into the base, wherein a ring element made from a flexibly resilient material sits in a mouth of the opening associated with the base, such that the ring element is carried by the plate element at a time of mounting the plate element on the base, and wherein a revolving shoulder is moulded into the mouth of the opening in which the ring element sits, on which shoulder the ring element is supported.

2. The plate element according to claim 1, wherein the ring element is designed to be flexible in a circumferential direction.

3. The plate element according to claim 2, wherein the ring element has a ring opening, whose inside diameter is smaller than an inside diameter of the opening in the mouth in which the ring element sits.

4. The plate element according to claim 1, wherein the ring element is flexibly resilient in a direction parallel to a longitudinal axis of the opening.

5. The plate element according to claim 4, wherein the ring element protrudes beyond the underside of the plate element in an unmounted plate element.

6. The plate element according to claim 1, wherein the plate element is a guide plate, which comprises a contact surface on a face side, which rests on a side of a foot of the rail to be fastened during use.

7. The plate element according to claim 1, wherein the plate element is a base plate, which is arranged at least in sections under a foot of the rail to be fastened during use.

8. The plate element according to claim 1, wherein the ring element sits in the mouth of the opening associated therewith in an interlocking manner.

9. The plate element according to claim 1, wherein the ring element is held in the mouth of the opening associated therewith in a force-fit manner.

10. The plate element according to claim 9, wherein the ring element is locked into place with the plate element in a separable manner.

11. The plate element according to claim 1, wherein the plate element is made of a synthetic material and the ring element is firmly bonded to the plate element.

12. The plate element according to claim 11, wherein the ring element is injection moulded onto the plate element.

13. A fastening point at which a rail for a rail vehicle is fastened to a fixed base, comprising a plate element configured according to claim 1, an anchor fitting countersunk into the base, and a fastening element guided through an opening of the plate element and screwed into the anchor fitting in order to fasten the plate element to the base.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The invention is explained in greater detail below using example embodiments. The schematic drawings show the following:

(2) FIG. 1 shows a perspective view of a plate element configured as a base plate;

(3) FIG. 2 shows a perspective view of a section of the underside of the plate element according to FIG. 1;

(4) FIG. 3 shows the plate element according to FIG. 1 in a section along the intersecting line X-X drawn in FIG. 2;

(5) FIG. 4 shows a longitudinal view of a flexible ring element provided for the plate element according to FIG. 1;

(6) FIG. 5 shows a perspective view of the ring element according to FIG. 4;

(7) FIG. 6 shows a system for fastening a rail for a rail vehicle to a base using a plate element according to FIG. 1;

(8) FIG. 7 shows a longitudinal view of an alternative embodiment of a flexible ring element;

(9) FIG. 8 shows a perspective view of the ring element according to FIG. 7.

DETAILED DESCRIPTION OF THE INVENTION

(10) The plate element 1 designed as a base plate is part of a rail fastening system, as described, for example, in German patent application 10 2013 102 531.5 and in Chinese utility model 201320209968.6 claiming priority over this application. The content of the German patent application and the Chinese utility model is incorporated into the disclosure of the present application for the purposes of additional explanation.

(11) The plate element 1 has a flat underside 2 and an upper side 3 aligned parallel thereto. Two openings 4, 5 are formed in the side end sections of the plate element 1, each of which lead from the upper side 3 to the underside 2. The openings 4, 5 are arranged at a distance such that, in a mounted position, each opening sits to the side of the foot of the rail (not shown here) to be supported on the upper side 3 of the plate element 1.

(12) As can be seen from FIGS. 2 and 3, a revolving shoulder 7 is formed in the region 6, in which the openings 4, 5, which are circular in cross-section, open onto the underside 2 of the plate element 1. Two slot-shaped channels 7a, 7b opposite each other are moulded into the base area of the shoulder 7, which channels are arranged at a short distance from the respective opening 4, 5 and extend parallel to the longitudinal axis L of the respective opening 4, 5. The channels 7a, 7b, form the space for movement for each associated arm 1a, 1b, 1a, 1b moulded onto the plate element 1 in an integral manner and protruding beyond the upper side 3 of the plate element 1, which arm restricts the respective opening 5, 6 in the region of the channels 7a, 7b and secondly, incorporates catches 1c, 1d on the free ends thereof.

(13) A ring element 8a, 8b sits on the shoulder 7. The ring element is made from a rubber-like, flexibly resilient material, for example. The height H of the respective ring element 8a, 8b measured in the longitudinal direction L of the openings 4, 5 is calculated such that the ring element 8a, 8b protrudes beyond the underside 2 of the plate element 1 in an unmounted, unstressed state (FIG. 2). In this state, the diameter of the ring opening 9 surrounded by the ring element 8a, 8b corresponds to the diameter of the respective opening 4, 5.

(14) Two concentrically arranged revolving channels 8c, 8d, each defined relative to each other and relative to the ring opening 9 and the outer circumferential side by a shoulder, are moulded into the face side 8c associated with the underside 2 of the plate element 1, as a result of which the elasticity of the ring elements 8a, 8b is further enhanced in the region, with which the ring elements 8a, 8b act relative to the contact surface 10 of a base 11 during use on which the plate element 1 sits during use.

(15) On the side opposite the channels 8c, 8d, the ring elements 8a, 8b each have a lug 8e, 8f the shape of which is adjusted with a slight excess according to the slot-shaped channels 7a, 7b. For fastening purposes, the lugs 8e, 8f of the ring elements 8a, 8b are pressed into the associated channels 7a, 7b until the respective ring element 8a, 8b sits on the shoulder 7 assigned thereto. Owing to the individual elasticity of the material of the ring elements 8a, 8b configured as a single piece, the lugs 8e, 8f are gently pressed together such that they sit in the respective channel 7a, 7b in an interlocking and force-fit manner when ready in the opening region 6 of the respective opening 4, 5, and the respective ring element 8a, 8b is thus held down on the plate element 1.

(16) To mount a fastening point B for a conventional rail S for a rail vehicle, the underside 2 of the plate element 1 is placed onto the contact surface 10 of the fixed base 11 created by a concrete sleeper or concrete slab. Anchor fittings 12, 13 are countersunk into the base 11 and aligned flush with the respectively associated opening 4, 5.

(17) Insofar as the anchor fittings 12, 13 are correctly and accurately aligned such that their upper edges, which define the respective anchor fitting opening, are aligned flush with the contact surface 10 of the base 11, the ring elements 8a, 8b sit on the edge of the base 11 enclosing the respective anchor fitting 12, 13. If, however, the upper edge of one of the anchor fittings 12, 13 protrudes beyond the contact surface 10, then the respective ring element 8a, 8b presses against said edge.

(18) Regardless of how the contact occurs, the ring element 8a, 8b is compressed on mounting due to the dimensioning of its height such that a certain pressure is exerted on the respective counter flange edge region of the base 11 or upper edge of the respective anchor fitting 12, 13. This pressure is sufficient to prevent moisture from penetrating the contact region.

(19) Along with the pressing together following contact with the base 11 or the upper edge of an anchor fitting, the flexible material of the ring elements 8a, 8b makes way in the direction of the respective ring opening 9 such that the ring elements 8a, 8b, with their inner surfaces enclosing the respective ring opening, press gently against the peripheral surfaces of sleeper screws 14, 15 serving as fastening elements, one of which is pushed into one of the openings 4, 5 and screwed into the respective associated anchor fitting 12, 13 in order to tighten a tensioning clamp 16, 17 and generate the flexible retaining force required to hold it down. In this manner, a double sealing effect is achieved by the ring elements 8a, 8b.

(20) The tensioning clamps 16, 17 each rest on a guide plate 18, 19, which each sit on a section of the plate element 1 protruding beyond the side of the foot F of the rail S and their face side contact surface associated with the rail foot S rests against the side of the rail foot F. The guide plates 18, 19 each have an opening, which is aligned flush with the associated opening 4, 5 and through which the respective associated fastening element 14, 15 is pushed.

(21) The plate element 1 has already been provided with pre-installed guide plates 18, 19 for mounting. For this purpose, the arms 1a, 1b, 1a, 1b of the plate element 1 reach through the openings of the guide plates 18, 19 associated with them and lock in place with the upper edge of their catch 1c, 1d, which defines the opening of the respective guide plate 18, 19. In this manner, the guide plates 18, 19 are held in a detachable, interlocking manner on the plate element 1 and can be placed together with said plate element as a unit onto the contact surface 10.

(22) FIG. 7 and FIG. 8 show an alternative embodiment of a ring element 20 which can be used instead of the ring elements 8a, 8b. The ring element 20, manufactured like the ring elements 8a, 8b as a single piece from a flexibly resilient, electrically non-conductive synthetic material, is configured in the form of a sleeve with a cylindrical sleeve body 21 and has revolving catch-like lugs 22 on its outer peripheral surface. In addition, a revolving rim-like collar 23 is formed on its one face side. The collar 23 is slightly curved such that the free face side 24 thereof protrudes slightly over the edge which defines the mouth of the ring opening 25 of the ring element 20 in the region of the collar 22.

(23) For assembling the sleeve body 21 of a ring element 20 is pushed into one of the openings 4, 5 of the plate element 1 until the collar 23 of the respective ring element 20 sits on the shoulder 7 of the associated opening 4, 5. The lugs 22 are formed so as to be flexible such that the respective ring element 20 is held in an interlocking and, as a result of friction locking, also in a force-fit manner, in the respective opening 4, 5 after being pushed in.

(24) The thickness of the collar 23 and its curvature are selected such that the collar 23 is pressed together flexibly when the plate element 1 is set on the contact surface 23 thus ensuring a more secure seal between the plate element 1 and the base 11 in the region of the mouth 6 of the respective opening 4, 5. At the same time, the inner surface of the ring opening 25 of the ring element 20 rests tightly against the peripheral surface of the fastening element 14, 15 guided through the ring opening 25 in ready-mounted fastening point B, thus creating a further safeguard against the penetration of moisture and the occurrence of electrically conductive bridges.

REFERENCE NUMERALS

(25) TABLE-US-00001 1 Plate element 1a, 1b Arms 1a, 1b Arms 1c, 1d Catches of the arms 1a, 1b 2 7 Shoulder 8a, 8b Ring elements 8c, 8d Channel 9 Ring opening 10 Contact surface 11 Base 12, 13 Anchoring fitting 14, 15 Sleeper screws (fastening element) 16, 17 Tensioning clamps B Fastening point F Foot of the rail S H Height of the respective ring element 8a, 8b S Rail