EP1026321A1 - Steel connector for railway sleepers, more particularly for prestressed concrete sleepers for switches - Google Patents

Abstract

At least two sleeper parts (1,2) are joined together along the longitudinal axis of the sleeper so that bending movements, transverse forces and normal forces are transmitted as with an integral sleeper. Preferably two joining parts (5,6) each have an end plate (7), on which a bar (8) with at least two holes for bolting.

Description

The invention relates to a connecting device between threshold parts in sleepers with extra length for rail-bound traffic routes, primarily for prestressed concrete turnout sleepers, those for on-site assembly from several prefabricated ones Threshold parts can be assembled into rigid longitudinal sleepers, as they are is described generically in the preamble of claim 1. As an extra-long threshold here a threshold is called, which is significantly longer than a normal track threshold.

Overlength sleepers are mainly used in turnout construction. As a general rule switches are made on site from the installation of separately delivered sleepers, Rails and switch poles installed. This process is labor intensive. New Switch types are completely preassembled in the factory for inspection. It is obvious not to dismantle an already preassembled switch for transport, but to disassemble it to be transported and installed in the pre-assembled state to the construction site. For one Transporting pre-assembled turnouts is the ideal way to transport the Switch in horizontal storage on wagons. This way, however, are only Switch elements can be transported up to a width of about 2.80 m. In the field of Track branching of a switch results from the overlap of the continuous Track with the branching track and the associated spatial constriction of the Forced to arrange thresholds running under both tracks that are over 4.00 m long can be. Around a switch element over 4.00 m wide on the rail track To be able to transport it must be divided into a maximum of about 2.80 m wide Section and a section that extends beyond the remaining width of 2.80 m.

The switch sections limited as described above can be in the preassembled state Installation site can be transported and installed on site using a conventional track laying device. Around They must be properly supported and kept stable under traffic When dividing the switch element, thresholds cut through in their continuous action be restored across the entire width of the switch.

A construction of the same type, with the assigned threshold parts in the for the Transport separate switch sections are to be connected again known from DE 42 01 631. Two sleeper parts are replaced by one on the Surfaces of the threshold parts extending and anchored in the surfaces Flat steel plate bridging the gap between the parts more or less articulated. The known connection is flexible in the joint and partially also soft with regard to the transfer of lateral forces. This well-known construction represents the property of the continuous in the joint between the threshold parts monolithic threshold not recovering. The positional stability of the switch is in the range thresholds encountered in this way are reduced.

The invention has for its object to develop a threshold connection with which Prefabricated prestressed concrete sleeper parts subsequently resistant to bending, tensile and shear interconnectable to form monolithic threshold units that the switch when installed in a ballast bed is level and can be installed according to plan and under traffic remains dimensionally stable.

The object is achieved by the features of a connecting device, as in characterizing part of claim 1 are described.

Suitable constructions for a device according to the invention are in the Subclaims 2, 4, 9, 11 and 13 are shown.

The training is particularly useful for track maintenance work and repairs the device according to the invention as a repeatedly releasable connection according to claim 16. A partial solution to the joint effect can be used in track maintenance work be useful if you avoid the build-up of bending stresses, displacements who wants to prevent threshold parts against each other.

For common switch types, the connecting devices according to the invention can be used Equipped sleeper parts are provided and switches are made by the manufacturer or if necessary Stock pre-assembled transported to the installation site and with the help of conventional laying equipment be installed economically.

The solutions according to claims 2,4 are particularly suitable for threshold production in Fitted bed. In the case of the production of fitted beds, the positions with which the individual Threshold parts are cut to length, a space between successive parts kept clear by making the separating cut of the prestressing reinforcement. This Space is used for the structural development of a connecting device according to the Claims 2 and 4 used. Your construction stands with the necessary Installation elements in the sleeper part do not have the cross-sectional contour of the sleeper part that is determined by the clear cross-section of the bed. To the for Turnout thresholds required high accuracy of positioning the To reach threshold connection means, the connection devices become so far possibly already pre-assembled in the formwork and in production in the fitted bed a continuous template for the bumpy long sill with the threshold parts concreted.

The solutions according to claims 9, 11 and 13 are also suitable for thresholds in Circulation formwork are manufactured. In the thresholds there are only cutouts for Screw connections provided. The connections are in the form of web and / or Flange plates subsequently screwed onto the outer threshold surfaces. For the exact Positioning of the built-in parts, however, requires special templates in the formwork to be built in.

The compounds according to the invention are illustrated by way of examples in FIGS. 1-20 explained.

Fig. 1 und 2

eine Verbindungsvorrichtung nach den Ansprüchen 2 und 3 Fig. 1 als Schnitt durch die Verbindungsvorrichtung senkrecht zur Schwellenachse,
Fig. 2 als vertikaler Schnitt in Schwellenachse, Fig. 2/1 mit Nocke 51,
Fig. 2/2 mit Nut 52

Fig. 3 und 4

eine Verbindungsvorrichtung nach Anspruch 4;
Fig. 3 als Schnitt durch die Vorrichtung senkrecht zur Schwellenachse
Fig. 4 als horizontaler Schnitt in Schwellenachse

Fig. 5 und 7/1

eine Verbindungsvorrichtung nach Anspruch 9;
Fig. 5 als Schnitt durch die Vorrichtung senkrecht zur Schwellenachse
Fig. 7/1 als Seitenansicht

Fig. 6 und 7/2

eine Variante zu Anspruch 6 gem. Anspruch 10 analog den Fig. 5 und 7/1

Fig. 8 und 9

eine Verbindungsvorrichtung nach Anspruch 11 und 12,
Fig. 8 in einem Schnitt durch die Vorrichtung senkrecht zur Schwellenachse
Fig. 10/1 in Seitenansicht

Fig. 10 - 11

eine Verbindungsvorrichtung nach Anspruch 3,
Fig. 10 in einem Schnitt durch die Vorrichtung senkrecht zur Schwellenachse
Fig. 11 als Seitenansicht

Fig. 12

Beispiel einer erfindungsgemäßen Weichenschwelle

Show it

1 and 2

2 shows a connecting device according to claims 2 and 3, FIG. 1 as a section through the connecting device perpendicular to the threshold axis,
2 as a vertical section in the threshold axis, Fig. 2/1 with cam 51,
2/2 with groove 52

3 and 4

a connecting device according to claim 4;
Fig. 3 as a section through the device perpendicular to the threshold axis
Fig. 4 as a horizontal section in the threshold axis

5 and 7/1

a connecting device according to claim 9;
Fig. 5 as a section through the device perpendicular to the threshold axis
Fig. 7/1 as a side view

6 and 7/2

a variant according to claim 6. Claim 10 analogous to FIGS. 5 and 7/1

8 and 9

a connecting device according to claims 11 and 12,
Fig. 8 in a section through the device perpendicular to the threshold axis
Fig. 10/1 in side view

Figures 10-11

a connecting device according to claim 3,
Fig. 10 in a section through the device perpendicular to the threshold axis
Fig. 11 as a side view

Fig. 12

Example of a turnout threshold according to the invention

Description of the reference numbers:

12 shows the example of a turnout threshold 53 according to the invention from FIGS Threshold parts 1,2, of which the threshold part 1 in the example is approximately the length of one Has normal threshold. There are four rail tracks 54, 55 on the turnout sleeper 53 mounted, here the rails 54 for the continuous and the rails 55 for branching track belong.

Threshold parts 1, 2 are made by steel connecting devices 3, 11, 21, 31, 41 non-positively over a structurally predetermined space 50 for all cutting stresses occurring in the separating cut between the sleeper parts connected with each other. The devices 3 according to claim 1 and 11 according to claim 2 are For connecting sleepers that are made in a fitted bed. With Devices 21 according to claim 9, 31 according to claim 11 and 41 according to claim 13 are also Threshold parts manufactured in battery formwork can be connected.

A device 3 according to claim 1 is described in FIGS. 1 and 2. It consists of two same connecting parts 5, 6, which in the manufacture of the threshold parts 1 and 2 to the assigned end faces 4 of the parts 1,2 were concreted. Each connecting part 5, 6 has an end plate 7 fitted into the sleeper formwork, which is approximately in the center outward a vertical web 8 and back inside anchor 9 are welded. The webs 8 of the parts 5, 6 lie flush against one another in the installed state of the sleeper parts and are through at least two screws 20 - expediently high-strength fitting screws that pass through in moments transmitting arrangement drilled holes 10 of the web 8 are inserted -, rigid connected with each other.

The anchors 9 are also in a moment-transmitting arrangement on the end plate 7 welded or screwed in. For better lateral force introduction from the face plate 7 in the concrete of the sleeper parts 1, 2 are on the back of the concrete facing the Plates expediently arranged horizontally running cams 51 or grooves 52.

Another connecting device 11 according to claim 4 is shown in FIGS. 3 and 4. she comprises two identical connecting parts 13, 14. Each connecting part 13, 14 comprises H-shaped one of the mutually opposite ends of the to be connected Sleeper parts 1 and 2. The sides of the H form a pair of unevenly shaped plates 15, 16. The plates 15, 16 face out into the space 50 between the two Threshold parts 1, 2 facing parts 15/1, 16/1 and rear facing parts 15/2, 16/2, with which the connecting part 13, 14 with the associated threshold part 1 or 2 rigid is connectable to.

The connecting parts 13, 14 are installed in the sleeper parts 1 and 2, that in the Connect each one plate 15 of the connecting part 13 of a sleeper part 1 a plate 16 of the connecting part 14 of the other sleeper part 2 faces, and vice versa. The Plates 15, 16 are arranged with one in the plane of the end face of the sleeper part Spacer plate 19 welded.

So that with their rear part 15/2 and 16/2 in the same plane flush with the Wall formwork in the sleeper parts 1,2 built-in plates 15, 16 in the space 50 to to be connectable to each other, to be brought into abutting position, is the one of the two parts to be connected, the plate part 16/1 laterally around the Plate thickness of part 15/1 offset inwards - for example by cranking, or Milling or by welding two staggered plates -. The overlapping adjacent parts 15/1 and 16/1 have bores 17 arranged and in such numbers, that a predetermined bending moment can be transmitted by means of screws arranged in them. The rear parts 15/2, 16/2 of the plates 15, 16 are by anchor 18 in the concrete Sleeper parts 1, 2 rigidly and non-positively integrated.

Figure 5 ÷ 7 describe connecting devices 21 according to claim 9. The threshold parts 1,2 are by tab-like connecting parts 22 which on the side surfaces 26 of the Threshold parts are screwed, rigidly connected to each other. The connecting parts 22, 28 have in their part ends 23, 24, with which they the heads of the threshold parts 1, 2nd overlap, in the example according to FIG. 7 four bores 25 each, which correspond to the corresponding Recesses in parts 1, 2 fit. Using screws 27, the parts enforce, the connecting parts 22 with the threshold parts 1,2 rigid and clamped tight. A variant with profiled connecting device 28 for one 6 and 7/2.

8 and 9 show a connecting device 31 according to claim 11. It consists of a belt-like profiled connecting part 32, the threshold parts 1,2 on the Surface 36 connects together. The connection is made by tightening the Connecting part 32 with the concrete of the sleeper parts 1, 2 through holes 34 penetrating push-through fittings 35. The cross section of the profile of the Connecting part 32 and the required number and arrangement of the screws 35 is by determines the cutting stresses to be transmitted in the impact.

10 and 11, a connecting device 41 according to claim 13 is shown. she has a U-shape which is open at the bottom and surrounds the sleeper parts 1, 2 in a form-fitting manner with lateral profile webs 43 and a strap 44 connecting the webs. With their dividing ends 42, the connecting device 41 is non-positive and rigid with the ends of the Threshold parts 1, 2 connected. The part ends point in the profile webs 43 by arrangement and number of holes determined by the loads to be transmitted 45 - im Example four - on whose axes screws 46, the webs 43 and the concrete of the Push through sleeper parts 1, 2 and clamp them together.

To local stress peaks in the concrete of the threshold parts 1, 2, which when pressing the steel connecting parts 22, 28, 32, 41 to the concrete and damage to the concrete can lead to avoid expedient pressure-compensating plates 37 between the connecting parts and the concrete inserted.

Claims (16)

Connecting device (3, 11, 21, 31, 41) for multi-part sleepers made of concrete for rail-bound traffic routes, primarily for turnout sleepers in which at least two prefabricated sleeper parts (1, 2) can be subsequently connected in the longitudinal axis using a steel construction, characterized in that that it connects the threshold parts (1, 2) to a threshold unit which is equivalent in the area of the connection with regard to the transmission of bending moment, shear force and normal force of an unimpeded threshold, and that the installation parts required for the connection in the concrete of the threshold parts do not protrude beyond their concrete outer contour . Device (3) according to claim 1, characterized in that that it has two connecting parts (5, 6) which are arranged on the mutually facing end faces of the parts (1, 2), that its dimensions perpendicular to the threshold axis do not protrude beyond the clear inner contour of the formwork, that it has an end plate (7) arranged on the end face of the sleeper part (1, 2), on the outer surface (4) of which a web (8) provided with at least two bores (10) is welded vertically in the vertical plane, that the web (8) is welded offset by half a web width from the center so that the webs of associated connecting parts (5, 6) on assigned sleeper parts (1, 2) are flush with one another during sleeper assembly and the bores (10) coincide with one another lie, that by means of the holes (10) penetrating screws (20), the webs (8) are non-positively clamped together, and that anchors (9) are welded or screwed onto the inside of the end plate (7), with which the cutting forces can be introduced from the end plate into the sleeper parts (1, 2). Device according to claim 2, characterized in that the end plate (7) has at least one cam or groove on its inner surface on the concrete side. Device (11) according to claim 1, characterized in that that it has an H-shape in the top view, the sides of which form the unevenly shaped plates (15, 16), which are kept at a distance by webs (19), that its dimensions perpendicular to the threshold axis do not protrude beyond the clear inner contour of the formwork, that each plate (15, 16) has a front plate part (15 / 1.16 / 1) which can be screwed into the intermediate space (50) and a rear plate part (15 / 2.16 / 2) which can be integrated into the concrete body of the sleeper part (1, 2) ) having, that the outer surface of the plate part (16/1) can be placed flush next to the inner surface of the opposite assigned plate part (15/1) during assembly of the sleeper parts (1, 2) in the intermediate space (50) by suitable shaping - for example by angled portions, that through mutually assigned bores (17) in the plate parts (15 / 1,16 / 1) screws (20) can be inserted, with which mutually assigned plate parts (15 / 1,16 / 1) can be screwed together non-positively and that the rear plate parts (15 / 2,16 / 2) can be anchored in the concrete of the sleeper parts by suitable means (18). Device according to claim 4, characterized in that the connecting means (18) to the concrete are steel anchors or headed dowels. Device according to one or more of claims 1-5, characterized in that the associated connecting parts (5, 6 or 13, 14) of a connecting device (3 or 11) are screwed in the completely preassembled state or installed in the formwork and fixed in place by steel pins become. Device according to one or more of claims 1-6, characterized in that the template, which determines the position of the rail fastening means for the unimpeded longitudinal sleeper, passes unimpeded under the sleeper parts via the connecting device on the formwork sole. Device according to one or more of claims 1-7, characterized in that the screws (20) are HV screws. Device (21) according to claim 1, characterized in that it has two tab-like connecting parts (22) with at least two bores (25) at each end (23, 24), that the ends (23, 24) of the tab-like connecting parts (22) on the side surfaces (26) at the ends of the threshold parts (1, 2) to be connected can be non-positively connected to them, and that the flexurally rigid connection is produced by screws (27), the ends (23, 24) of the connecting parts (22) abutting the ends of the sleeper parts (1, 2) to be connected and the concrete of the sleeper parts in the axes through the bores (25) push through and clamp, and that the built-in parts (29) for the passage of the screws (27) through the threshold do not protrude from the contour of the concrete. Connecting device according to claim 9, characterized in that the tab-like connecting parts are profile parts (28) - for example [- profiles -. Devices (31) according to claim 1, characterized in that it consists of a belt-type connecting part (32) with bores (34) at each end of the part, which has a rigid profile, that the head ends of the sleeper parts (1, 2) to be connected can be connected rigidly to the connecting part (32) on the upper sides (36), that the rigid connection can be produced by screws (35) which are anchored by known means in the concrete of the sleeper parts (1,2) and that the built-in parts (29) for the passage of the screws (27) through the threshold do not protrude from the contour of the concrete Apparatus according to claim 11, characterized in that the anchoring is made with push-through fittings (33). Device according to claim 1, characterized in that it has the profile of a U which is open at the bottom, with which it positively engages over the head ends of the sleeper parts (1, 2) to be connected and can be connected to them in a rigid manner, that it has bores (45) at the ends (42) laterally overlapping the head ends of the sleeper parts (1, 2), at least in the profile webs (43), that by screws (46), which at least penetrate the webs (43) of the profile of the connecting device (41) and the concrete of the sleeper parts (1,2) in the axes of the bores (45) and clamp them, the rigid connection can be produced and that the built-in parts (29) for carrying out the screws / 27) do not protrude from the contour of the concrete through the threshold Device according to one or more of claims 1-13, characterized in that the screws (20, 27, 35, 46) are fitting screws and the bores (10, 17, 25, 34, 44) and the chuck for carrying out the screw connection the concrete of the sleeper parts (1,2) are designed to be form-fitting. Device according to one or more of claims 9 to 14, characterized in that pressure-compensating tarpaulins (37) are inserted between the connecting parts (22, 28, 32, 41) and the concrete of the sleeper parts (1, 2). Device according to one of claims 1-15, characterized in that the connections (3, 11, 21, 31, 41) can be detached in whole or in part to the point of articulation without dismantling a track (54, 55).

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