CS197305B2 - Railway crossing facing the upper level of the rails - Google Patents

Description

(54) Level crossing flush with upper track level

Railroad crossings aligned with the upper track level are known, for example, from GDR patent No. 120,491. The level crossing described in this document consists of concrete slabs located between the rails and between the rails and the roadway body on rubber supports. Despite their relatively small size, these concrete slabs have a weight of several hundred kg and, due to their heavy loads, they also have complex reinforcement, so their production requires a lot of experience and knowledge. This is accompanied by the disadvantage of the heavy weight, which results in the need for a crane to be installed. In addition, extraordinary precision is required in the preparation of the bearing points, since all four plate bearing points must be aligned exactly. If such an adjustment is not achieved, the concrete slab will wobble, resulting in a significant reduction in its service life.

Furthermore, when cleaning the rail superstructure, due to the size of the working space required by these machines, the plates need to be removed again, leading to considerable labor and tooling requirements and necessarily negatively affecting the placement accuracy of the plates.

SUMMARY OF THE INVENTION The object of the present invention is to provide a railroad crossing which is aligned with the upper level of the rails, which can be easily and quickly fitted with minimum demands on work equipment and personnel and without special requirements for the elements to be produced.

SUMMARY OF THE INVENTION The present invention is based on a rail crossing which is aligned with the upper level of the rails, in which steel beams are arranged perpendicular to the rail direction between the rails and between the rail and the carriageway which are supported on both rails or on one side The ends of the beams are arranged parallel to the direction of the rails.

All railway crossing elements can thus be manufactured in a size that is easy to handle by hand, in an extremely simple way.

The aforementioned problem resulting from the necessity of an unconditional height adjustment of the concrete slab bearing points is completely eliminated in the case of the embodiment according to the invention, since the beams embedded in the steel beams are not rigidly connected to these beams. of elements.

The elastic support of the steel beams at the ends of the rails is carried out in a known manner by means of a flexible fitting, shaped to the profile of the rail and provided with a groove recess which serves to absorb vibrations due to shock loads from passing vehicles. These loads are transmitted from the beams arranged parallel to the rails to the steel beams and then to these fittings.

Wide-flange I-profiles are particularly suitable for steel beams, which on the one hand provide favorable support for the beams and, on the other hand, have a high moment of inertia.

In a preferred embodiment of the invention, the steel beams can each be provided with a nose-like projection, which is inserted into the flexible fitting, at their rail ends. This has the advantage that the projections thus designed can be welded to the beam, for example, thus eliminating the extremely difficult reduction of the width of the steel beam according to the size of the groove recess in the flexible fitting.

Especially for less stressed crossings, it is advantageous if the beams are made of wood. This allows not only easy on-site machining but also shock absorption. For heavily frequented railway crossings, it is advantageous if the beams are made of a hard and resistant material such as steel, concrete, plastic, etc. It is expedient to insert flexible bearing bodies between the beams and the steel beams, which provide additional damping and guarantee perfect fit.

It is expedient to provide beams located between the rail and the pavement body at their ends facing the pavement body with a support body perpendicular to the longitudinal direction of the steel beams. The foundation beneath the support body will thus be placed deeper and will not interfere with the cleaning of the track superstructure. In addition, the formation of undesirable beam supports in the space between the steel beams is avoided.

It is particularly advantageous if the support body consists of an adjusting bolt firmly connected to the steel beam, but with respect to its vertical position relative to the steel beam, adjustable in height so that the consequences of fatigue of the elastic bearing after prolonged use, as well as The height differences between the level crossing and the road body due to wear can be compensated.

In order to eliminate the effects of icing, it is advantageous if the beams and possibly also the steel beams are provided with an elastic coating which prevents water leakage and, due to its elasticity, allows certain inevitable movements resulting from the presence of numerous bearings. shock load.

In order to avoid lateral displacements, it is advantageous if the steel beams at the ends are closed by a plate oriented perpendicularly to the longitudinal axis of the beams and the edge beams are aligned with the outer side of the plates so that precise observance of the distance between the beams. In addition, resilient nose-like projections can be easily attached to the ends of the beams facing the rails.

The invention is explained in more detail in the following description of an exemplary embodiment with reference to the accompanying drawings. In these drawings, FIG. 1 is a perspective view of a railroad crossing according to the invention, and FIGS. .

The steel beams 1, uspořád arranged perpendicular to the rails 11 are mounted on the rails on flexible fittings 2, adapted to the cross-section of the rails and provided with a groove recess. On the road side, the bearing is carried out either by the support body 6 shown in FIG. 1, fixedly connected to the steel beams 1, 1 or by means of self-locking screws known from the aforementioned German patent.

The ends of the steel beams 1, Γ of the rails 11 are provided with a nose-shaped projection 4, which can be pushed into the groove recess in the flexible fitting 2, to improve the force transmission and to achieve a more favorable engagement surface, this nose-shaped projection 4 being with the welded to a faceplate 5 which is attached to the end of the respective steel beam.

The support body 6 lies on the concrete base 7 and can be recessed into a corresponding recess to avoid slippage. To damp the oscillations, a resilient insert can be inserted between the support body 6 and the concrete base 7.

The beams 3 placed between the steel beams 1, Γ,, are at their ends always inserted into the corresponding groove-shaped recesses in the steel beam and can also be resiliently supported by intermediate inserts 8. The coating deposited on the beams 3 exits into it also contributes to dampening the impact loads caused by passing vehicles. In addition to asphalt, a rubber coating or coatings of plastics with corresponding notch toughness and abrasion resistance are suitable for this purpose.

As material for the beams 3, wood is particularly suitable, especially at low-speed railway crossings, since it is easy to work. For more important railway crossings, it is necessary to use harder, more abrasion-resistant materials such as concrete, plastics with fiber reinforcement, steel etc.

The arrangement of the beam 3 in the profile groove of the beam 1, 1 'shown in FIG. 2 is carried out by means of the above-mentioned intermediate elastic insert 8 which together with the elastic bearing of the beam 1, 1 on the rail 11 , perfect fit.

The anchoring member 9 shown in FIG. 3 serves to secure the position of the one of the beams 1, Γ lying on the outside, this

AND

The anchoring member 9 is preferably attached at one end to a plate mounted on a steel beam 1, 1 ‘a. the other end is connected to the rail 11. The shield 10 is also firmly connected to the steel beam 1, 1 ‘, and in the case of a hanging wagon coupling it is prevented from being hooked into the profile notch in the steel beam 1, 1.

The edge beam 3 'in Fig. 4 is provided with a recess 21 into which the closing end plate 5, 20 of the steel beam 1,1' fits, the surface 22 of the edge beam 3 'being in contact with the surface 23 of the plate 20 thereby distance of steel beams 1, 1.

Claims (10)

.· SUBJECT Railroad crossing aligned with the upper track level, characterized in that steel beams (1, 1 ') are arranged perpendicular to the track direction between the rails (11) and between the rail (11) and the roadway body (12), which are supported on elastic fittings (2) seated on the feet of the rails (11), the steel beams (1, Γ) bearing the ends of the beams (3) arranged parallel to the track direction; Railroad crossing according to claim 1, characterized in that the steel beams (1, Γ) are made of wide-flange I-profiles. 3. Railroad crossing according to point 1 or 2, characterized in that the steel beams are provided at their ends lying at the rails (11) with a nose-like projection (4), which is housed in a flexible fitting (2). 4. Crossing according to points 1, 2 and a 3 characterized in that the beams (3) are made of wood. Railroad crossing according to Claims 1 to 3, characterized in that the beams (3). are made of hard, durable. material such as steel, concrete, plastic, etc. 6. The level crossing referred to in point 5 BACKGROUND to the invention by the provision of flexible intermediate inserts (8) between the beams (3) and the steel beams (1, Γ). ’ 7.. railway crossing according to · items 1 and 2 · characterized in that · on the side of the road body · (12) is located under the end of the steel beam (1, 1 ') lying between the rail (11) and the road body (12) body C6). · ". Railroad crossing according to claim 7, characterized in that the support body (6) consists of an adjusting screw fixedly connected to the steel beam (1, Γ) but adjustable in terms of its vertical position relative to the steel beam (1, Γ). ). Railroad crossing according to one of Claims 1 to 8, characterized in that the beams (3) and, optionally, the steel beams (1, popřípadě) are provided with a flexible coating. Railway crossing according to Claims 1 to 9, characterized in that the steel beams (1, · Γ) are closed at the end by a plate (5, 20) perpendicular to their longitudinal axis, the edge beams (3) aligned with the outside of these platelets (5, 20).