Rail of a drainage channel

Abstract

Rails for drainage channels or manholes are known on which a cover of a channel or of a manhole can be placed. The rail has a horizontal bearing surface (10) extending in a longitudinal direction of the drainage channel or of the manhole and, substantially perpendicular to this bearing face, a rail edge (11) on the inner surface (12) of which the cover can be placed and on the outer surface (13) of which a surface covering can be applied. To increase the strength, it is proposed that the bearing surface (10) and/or the inner surface (12) and/or the outer surface (13) is/are provided with beads (20, 22, 23) over the entire length of the rail (1).

Claims

1. A rail for a drainage channel or a manhole on which a cover for a channel and/or a manhole can be placed, having a horizontal bearing surface running in a longitudinal direction of the drainage channel or the manhole and having a rail edge essentially perpendicular to the former, wherein the cover can be placed on an inner surface of the rail or the rail edge, and a surface covering can be applied to an outer surface of the rail, characterized in that the outer surface is provided with beads over the entire length of the rail that run perpendicular to the longitudinal direction and thus vertically, and the inner surface is provided with beads that run parallel to the longitudinal direction.

2. The rail according to claim 1, characterized in that the rail is produced from a steel plate material.

3. The rail according to claim 1, characterized in that the bearing surface is provided with beads that run parallel to the longitudinal direction.

4. The rail according to claim 1, characterized in that the beads are designed to develop into one another in an undulating shape.

5. The rail according to one of claim 1, characterized in that the beads in the bearing surface are designed as an essentially continuous row of single beads.

6. The rail according to claim 1, characterized in that the rail has at least one interrupted section in the region of the bearing surface positioned centrally in the longitudinal direction.

7. The rail according to claim 2, characterized in that the beads are formed by roll forming.

8. The rail according to claim 2, characterized in that the rail is produced from a steel plate material having a thickness of 0.8 to 2 mm.

9. The rail according to claim 8, characterized in that the rail is produced from a steel plate material having a thickness of 1 to 1.5 mm.

10. The rail according to claim 4, characterized in that the beads are designed as hill-and-valley sections in the form of a continuous wave train.

Description

(1) Exemplary embodiments of the present invention are explained in greater detail below on the basis of drawings, in which:

(2) FIG. 1 shows a perspective diagram of a first embodiment of the invention,

(3) FIG. 2 shows the embodiment of the invention according to FIG. 1, wherein the rail edge has been cut transversely,

(4) FIG. 3 shows another embodiment of the invention in a diagram like that according to FIG. 1,

(5) FIG. 4 shows another embodiment of the invention in a diagram like that according to FIG. 3, and

(6) FIG. 5 shows a top view of the region V in FIG. 3.

(7) In the following description, the same reference numerals are used for the same parts and parts having the same effect.

(8) As shown in FIG. 1, the rail 1 shown here comprises a bearing surface on which a channel cover or manhole cover, and/or manhole grating can be placed in the usual manner. A rail edge 11, whose inner face 12 forms a contact surface for the cover to prevent lateral displacement, is connected to this bearing surface 10. An outer surface 13 of the rail edge 11 forms a flush seal with the body of the channel or the manhole, not shown here. On installation, the surfacing is continued up to this outer face 13 and/or a corresponding surface covering is cast.

(9) An inner section 15 extends downwards from the bearing surface 10, extending around the upper edge of the drainage channel (not shown here) and/or of the manhole together with the outer surface 13 of the rail edge 11. Both the lower edge of the outer surface 13 and the lower edge of the inner section 15 have an outer fold 14, and/or an inner fold 16, each being flanged inward in the direction of the upper edge of the channel and/or manhole. The inner fold 16 is also provided with an inner notch 17, which is provided for engaging locking devices for a cover.

(10) With the embodiment of the invention illustrated in FIGS. 1 and 2, the bearing surface 10 is now equipped with continuous bearing beads 20 extending over the entire length of the rail 1.

(11) The shaping of the bearing beads 20 is designed so that a continuous wave pattern is formed in cross section. This yields, first of all, a substantial stiffening of the bearing surface with respect to bending perpendicular to the longitudinal direction, and on the other hand, yields a bearing surface for the cover, which establishes material contact in only a few linear regions. This ensures that sticking in this region is essentially impossible.

(12) In all the embodiments shown here, the bearing surface of the rail edge 11 is provided with outer surface beads 23 running perpendicularly over a substantial portion of this outer surface 13. Here again, the structure is undulating (see FIG. 2 in particular), such that the hills and valleys are essentially directly adjacent to and develop into one another. FIG. 2 also shows that the height of the outer surface beads 23 extends to just in front of the upper edge of the rail edge 11 and below the bearing surface 10, so that an increased flexural stiffness is achieved with forces acting transversely to the longitudinal direction of the rail 11. Furthermore, adhesion between the rail and a cast surface covering is improved by these outer surface beads 23.

(13) The embodiments in FIGS. 3 and 4 differ from those according to FIGS. 1 and 2 in that the bearing beads are designed as circular embossings 20′ (see FIG. 3) or, rather, as oval bearing beads 20″ (see FIG. 4). The contact surface between the bearing surface 10 and an applied cover is increased in size, and nevertheless, sticking of the cover to the bearing face 10 is effectively prevented. The adhesion between the rail and/or the region of the bearing surface 10 and the cast channel body, and/or manhole body is improved.

(14) Due to the design of the beads 20, 20′, 20″ shown here, as well as 22 and 23, the dimensions A and B of the rail 1, which are shown in FIG. 5, may be set essentially at will, so that predefined dimensions based on standards can be set independently of the thickness of material of which the rail 1 is produced.

(15) In addition, it must be pointed out that production of the rail 1 from plate material can be accomplished in a particularly simple and nevertheless precise manner by roll forming. The beads 20 and 22 here are formed continuously, while the outer surface beads 23 and the bearing beads 20′ and 20″ (see FIGS. 3 and 4) are formed in the same procedure as “individual” embossings. Therefore, the rails 1 may be formed continuously from plate strip material.

(16) TABLE-US-00001 List of Reference Numerals  1 Rail 10 Bearing surface 11 Rail edge 12 Inner surface 13 Outer surface 14 Outer fold 15 Inner section 16 Inner fold 17 Inner notch 18 Interrupting section 20, 20′, 20″ Bearing bead 22 Inner surface bead 23 Outer surface bead