Bridge for a Rail Vehicle and Method for Assembling a Bridge Beam on Such a Bridge

Abstract

The invention relates to a bridge for a rail vehicle, including a track, which is formed from two parallel rails (S1, S2) and is provided for being driven on by the rail vehicle, and including a bridge beam (B1, B2), which supports the rails (S1, S2) of the track and is aligned transversely to a support profile (T1, T2) of the bridge. The bridge beam (B1, B2) is supported by a height adjustment element (R1, R2) arranged between the support profile (T1, T2) and the bridge beam (B1, B2), and wherein at least one fastening device is provided by means of which the position of the bridge beam (B1, B2) is fixed in relation to the height adjustment element (R1, B2). In order to be able to achieve an exact positioning of the bridge beams at their target height with reduced effort and at low costs, the invention proposes to design the height adjustment element (R1, R2) as a single-piece block, whose height (HR) is adapted to the distance between the support profile (T1, T2) and the bridge beam (B1, B2) by means of material-removing processing. Preferably, the bridge beam and the height adjustment element thereby consist of a plastic-based material, in particular a plastic-sand mixture.

Claims

1-18. (canceled)

19. A bridge for a rail vehicle, comprising a track, which is formed from two parallel rails (S1, S2) and is provided for being driven on by the rail vehicle, and comprising a bridge beam (B1, B2), which supports the rails (S1, S2) of the track and is aligned transversely to a support profile (T1, T2) of the bridge, wherein the bridge beam (B1, B2) is supported by a height adjustment element (R1, R2) arranged between the support profile (T1, T2) and the bridge beam (B1, B2), and wherein at least one fastening device is provided by means of which the position of the bridge beam (B1, B2) is fixed in relation to the height adjustment element (R1, B2), characterised in that the height adjustment element (R1, R2) is designed as a single-piece block, whose height (HR) is adapted to the distance between the support profile (T1, T2) and the bridge beam (B1, B2) by means of material-removing processing, and in that the material of which the bridge beam (B1, B2) and/or the height adjusting element (R1, R2) are made is a plastic-sand mixture.

20. The bridge according to claim 19, wherein the bridge beam (B1, B2) and the height adjustment element (R1, R2) are each manufactured from a plastic-based material.

21. The bridge according to claim 19, wherein the material, from which the bridge beam (B1, B2) is manufactured, consists of 10-65% by mass of thermally deformable plastic and as the remainder of sand mixed with the plastic.

22. The bridge according to claim 20, wherein the material of the height adjustment element (R1, R2) consists of up to 65% by mass of sand and 35-100% by mass of plastic, with which, if present, the sand is mixed.

23. The bridge according to claim 21, wherein the sand content of the material, of which the height adjustment element (R1, R2) consists, is lower than the sand content of the material, of which the bridge beam (B1, B2) consists.

24. The bridge according to claim 19, wherein the height adjustment element (R1, R2) is mounted on the support profile (T1, T2) so as to be displaceable in the longitudinal direction (LT) of the support profile (T1, T2).

25. The bridge according to claim 24, wherein the height adjustment element (R1, R2) is guided so as to be displaceable on the support profile (T1, T2) in the longitudinal direction (LT) of the support profile (T1, T2).

26. The bridge according to claim 19, wherein the fastening device comprises a first counter bearing provided on the height adjustment element (R1, R2), a second counter bearing provided on the bridge beam (B1, B2) and a tensioning means (N1, N2) which braces the counter bearings against one another.

27. The bridge according to claim 26, wherein the counter bearing provided on the height adjustment element (R1, R2) is formed by an outer surface of the height adjustment element (R1, R2) on which a recess running through the height adjustment element (R1, R2) opens, through which the tensioning means (N1, N2) is guided to the counter bearing (19) of the bridge beam (B1, B2).

28. The bridge according to claim 26, wherein the counter bearing provided on the height adjustment element (R1, R2) is formed by an outer surface of an intermediate piece (Z1, Z2) held on the height adjustment element (R1, R2), on which a recess running through the height adjustment element (R1, R2) opens, through which the tensioning means (N1, N2) is guided to the counter bearing of the bridge beam (B1, B2).

29. The bridge according to claim 28, wherein the intermediate piece (Z1, Z2) is guided so as to be displaceable on the height adjustment element (R1,R2) in the direction of gravity (V).

30. The bridge according to claim 26, wherein the counter bearing of the bridge beam (B1, B2) is formed by a recess designed on the bridge beam (B1, B2) into which the tensioning means engages.

31. The bridge according to claim 30, wherein the recess is formed by a retaining element (H1, H2) cast into the bridge beam (B1, B2), which consists, at least in the region against which the tensioning means (N1, N2) acts, of a material which is more highly loadable than the material of which the bridge beam (B1, B2) consists.

32. The bridge according to claim 31, wherein the retaining element (H1, H2) is a hollow profile which has an opening directed towards an outer side of the bridge beam (B1, B2) into which the tensioning means (N1, N2) engages.

33. The bridge according to claim 31, wherein the opening of the retaining element is arranged on the underside (U1, U2) of the bridge beam (B1, B2) assigned to the support profile (T1, T2).

34. The bridge according to claim 33, wherein the opening is designed as a slot opening extending in the longitudinal direction of the bridge beam (B1, B2).

35. A method for assembling a bridge beam (B1, B2) on a support profile (T1, T2) of a bridge for a rail vehicle, provided that the upper side of the bridge beam (B1,B2) is at a certain absolute target height (HS) when fully assembled, comprising the following work steps: a) providing a bridge beam (B1, B2); b) providing a height adjustment element (R1, R2) manufactured as a single-piece block and having a height greater than a theoretically determined, maximum possible distance, which exists between the underside (U1, U2) of the bridge beam (B1, B2) and the upper side of the support profile (T1, T2) when the upper side (12) of the bridge beam (B1, B2) is at the target height (HS); c) determining the actual distance present between the underside (U1, U2) of the bridge beam (B1, B2) and the upper side of the support profile (T1, T2) when the upper side of the bridge beam (B1,B2) is at the target height (HS); d) shortening the height (HR) of the height adjustment element (R1, R2) effective in the assembly position between the underside (U1, U2) of the bridge beam (B1, B2) and the upper side of the support profile (T1, T2) by the difference determined in work step c) by means of material-removing processing of the height adjustment element (R1, R2); e) placing the height adjustment element (R1, R2), which is adapted in terms of its height (HR), on the upper side of the support profile (T1, T2); f) placing the bridge beam (B1, B2) on the height adjustment element (R1, R2); g) fixing the bridge beam (B1, B2) to the height adjustment element (R1, R2).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The invention is explained in more detail below on the basis of a drawing representing an exemplary embodiment. The schematic drawings show the following:

[0047] FIG. 1 the fastening of a bridge beam to a support profile of a bridge for a rail vehicle in a section transverse to the longitudinal extension of the support profile;

[0048] FIG. 2 the fastening according to FIG. 1 in a lateral view sectioned partially along the section line A-A drawn in FIG. 1;

[0049] FIG. 3 an alternative fastening of a bridge beam on a support profile of a bridge for a rail vehicle in a section transverse to the longitudinal extension of the support profile;

[0050] FIG. 4 the fastening according to FIG. 3 in a lateral view sectioned partially along the section line A-A drawn in FIG. 3.

DESCRIPTION OF THE INVENTION

[0051] The support profiles T1, T2, which are shown in the figures and formed in a conventional manner as double T-profiles from a steel proven effective for this purpose, are part of an equally conventional bridge, not shown here further, via which a rail vehicle can cross a valley, a river or the like.

[0052] A bridge beam B1, B2 is in each case supported on the support profile T1, T2 and is aligned transversely to the longitudinal extension LT of the support profiles T1, T2. A rail S1, S2 is fastened to the upper side of the bridge beams B1, B2 in each case by means of a fastening system proven effective in practice for this purpose. The rail S1, S2 is in each case part of a track not shown here in more detail, which in a known manner comprises in each case two rails guided parallel and fastened, in the same manner as the rails S1, S2, on the bridge beams B1, B2.

[0053] The bridge beams B1, B2 each consist of a plastic-sand mixture which has been processed into the respective bridge beam B1, B2 in the manner explained above and described in the European patent 3 445 734 (application number 16 71 76 67.6). The bridge beams B1, B2 are thereby reinforced with steel reinforcements W in the manner described in WO 2018/192930 A1.

[0054] During their manufacture, a retaining element H1, H2 formed from sheet steel was additionally cast into the bridge beams B1, B2.

[0055] The retaining elements H1, H2 each consist of a base plate 1 covering the bridge beams B1, B2 on their underside U1, U2 and a profile 2 with a U-shaped cross-section (FIGS. 2, 4), which sits with its limbs 3, 4 on the side of the base plate 1 assigned to the interior of the respective bridge beam B1, B2 and is welded there to the base plate 1.

[0056] The profile 2 closed on its narrow sides 5 is arranged centrally on the base plate 1 in relation to the width BB of the bridge beams B1, B2 and extends in the longitudinal direction LB of the respective bridge beam B1, B2. The length of the profile 2 is thereby shorter than the length of the respective bridge beam B1, B2 such that the profile 2 is completely surrounded by the material of the respective bridge beam B1, B2 up to its open side assigned to the base plate 1. The respective retaining element H1, H2 formed from the profile 2 and the base plate 1 is anchored in the respective bridge beam B1, B2 in a highly loadable manner by anchors 6, which engage into the material of the respective bridge beam B1, B2 proceeding from the roof 7 of the profile 2 extending between the limbs 3, 4.

[0057] The space 8 surrounded by the profile 2 with the base plate 1 is opened to the underside U1, U2 of the respective bridge beam B1, B2 through a slot opening 9 which is aligned centrally in relation to the width BB of the respective bridge beam B1, B2 and extends in the longitudinal direction LB of the respective bridge beam B1, B2.

[0058] The bridge beams B1, B2 are each supported by a height adjustment element R1, R2 on the flat upper side 10 of the upper flange of the assigned support profile T1, T2.

[0059] The height adjustment elements R1, R2 have each been formed from a plastic-sand mixture in the manner which is already mentioned above and described in the European patent 3 445 734 (application number 16 71 76 67.6). However, they each have a lower sand content than the bridge beams B1, B2. In this way, the height adjustment elements R1, R2 are less brittle than the bridge beams B1, B2, such that, for example, they can be processed more easily in a material-removing manner.

[0060] The height HR of the height adjustment elements R1, R2 and thus the distance between the underside U1, U2 of the respective bridge beam B1, B2 and the upper side 10 of the support profile T1, T2 are each adjusted, for example, by milling off their upper side 11 assigned to the respective bridge beam B1, B2 such that the contact surfaces 12 each provided on the upper side of the bridge beams B1, B2 for fastening the rails S1, S2 are at an absolute target height HS predefined by the operator of the bridge, which ensures the optimal position of the running surface 13 of the rail S1, S2 for being driven over.

[0061] In the exemplary embodiment shown in FIGS. 1 and 2, a depression 15 extending in the longitudinal direction LT of the support profile T1 is formed into the underside 14 of the height adjustment element R1 and is delimited laterally by wall sections 16, 17. The width of the depression 15 is thereby dimensioned such that the support profile T1 with its upper flange sits in the depression 15 and in this case there is sufficient play between the wall sections 16, 17 and the assigned longitudinal sides of the upper flange of the support profile T1 for the height adjustment element R1 to move freely on the upper side 10 of the support profile T1. At the same time, the wall sections 16, 17 lock the height adjustment element R1 against excessive displacement in the transverse direction QT, which is aligned transversely to the longitudinal direction LT of the support profile T1.

[0062] In order to tension the height adjustment element R1 on the bridge beam B1, in the exemplary embodiment shown in FIGS. 1 and 2, two tensioning elements N1, N2 designed as tensioning screws are provided, which are each guided with their latch-like head 18 through the slot opening 9 of the retaining element H1 and are then pivoted about the longitudinal axis of the tensioning elements N1, N2 such that the head 18 is supported on the inner surface of the base plate 1 of the retaining element H1 assigned to the roof 7 of the retaining element H1 and forming a first counter bearing 19 for the tensioning elements N1, N2. With their shaft 20, the tensioning elements N1, N2 are guided through recesses 21 designed as through-openings, said recesses opening at the underside 14 of the height adjustment element H1. The nuts 22, 23 screwed onto the thread of the tensioning elements N1, N2 act against the outer surface on the underside 14 of the height adjustment element R1 forming a second counter bearing 24 for the tensioning elements N1, N2. The tensioning elements N1, N2, thus each with their heads 18 and the nuts 22, 23, form a fastening device by means of which the height adjustment element R1 is held on the bridge beam B1.

[0063] In the exemplary embodiment shown in FIGS. 3 and 4, the bridge beam B2 is connected to the height adjustment element N2 via intermediate pieces Z1, Z2 designed as L-shaped steel angles.

[0064] The intermediate pieces Z1, Z2 lie with their one limb 25 on the underside U2 of the bridge beam B2. A recess 26 designed as a through-opening is formed into this limb 25, through which recess a tensioning means N1, N2, also designed as a tensioning screw, is guided with its shaft. The tensioning means N1, N2, like the tensioning means N1, N2 in the exemplary embodiment of FIGS. 1 and 2, each have a latch-like head 27, which is supported in the same manner as the head 18 of the tensioning elements N1, N2 on the inner surface of the base plate 1 of the retaining element H1 acting as a counter bearing 19. Accordingly, the free lower outer surface of the limb 25 also serves as a second counter bearing for the nut 28, 29, which is screwed onto the threaded shaft of the tensioning elements N1, N2. The tensioning elements N1, N2, thus with their heads 27 and the nuts 28, 29, each form a fastening device by means of which the height adjustment element R2 is held on the bridge beam B2.

[0065] In order to enable mobility of the bridge beam B2 even in the vertical direction V (direction of gravity), the second limb 30 of the intermediate pieces Z1, Z2 aligned in each case at right angles to the first limb 25 is guided in each case in a recess 31, 32, which is formed into the assigned longitudinal side surface 33 of the height adjustment element R2. The lateral boundaries of the recesses 31, 32 thereby surround the limbs 30 on their free side facing away from the height adjustment element R2, such that the limbs 30 can each be displaced exclusively in the vertical direction V in the assigned recess 31, 32. At the same time, the limbs 30 protrude beyond the underside of the height adjustment element R2 which is seated so as to be slidable on the upper flange of the support profile T2 in the longitudinal direction LT and thus form a lateral guide through which excessive movement of the height adjustment element R2 in the transverse direction QT is prevented.

REFERENCE NUMERALS

[0066] 1 Base plate of the retaining elements H1, H2 [0067] 2 Profile of the retaining elements H1, H2 [0068] 3, 4 Limbs of the profile 2 [0069] 5 Narrow side of the profile 2 [0070] 6 Anchor [0071] 7 Roof of the profile 2 [0072] 8 Space surrounded by the profile 2 [0073] 9 Slot opening [0074] 10 Flat upper side of the upper flange of the support profiles T1, T2 [0075] 11 Upper side of the height adjustment elements R1, R2 [0076] 12 Contact surfaces (upper side) of the bridge beams B1, B2 [0077] 13 Running surface of the rail S1, S2 [0078] 14 Underside of the height adjustment element R1 [0079] 15 Depression [0080] 16, 17 Wall sections [0081] 18 Head of the tensioning elements N1, N2 [0082] 19 First counter bearing for the tensioning elements N1, N2 [0083] 20 Shaft of the tensioning elements N1, N2 [0084] 21 Recesses of the height adjustment element H1 [0085] 22, 23 Nuts [0086] 24 Second counter bearing for the tensioning elements N1, N2 [0087] 25, 30 Limbs of the intermediate pieces Z1, Z2 [0088] 26 Recess [0089] 27 Head of the tensioning elements N1, N2 [0090] 28, 29 Nuts [0091] 31, 32 Recesses [0092] 33 Longitudinal side surface of the height adjustment element H2 [0093] B1, B2 Bridge beams [0094] BB Width of the bridge beams B1, B2 [0095] H1, H2 Retaining elements [0096] HR Height of the height adjustment elements R1, R2 [0097] HS Absolute target height [0098] LB Longitudinal direction of the respective bridge beams B1, B2 [0099] LT Longitudinal extension (longitudinal direction) of the support profiles T1, T2 [0100] N1, N2 Tensioning elements [0101] QT Transverse direction of the support profiles T1, T2 [0102] R1, R2 Height adjustment elements [0103] S1, S2 Rails [0104] T1, T2 Support profiles [0105] U1, U2 Underside of the bridge beams B1, B2 [0106] V Vertical direction (direction of gravity) [0107] W Steel reinforcements [0108] Z1, Z2 Intermediate pieces