WO1995017552A1

WO1995017552A1 - Sleeper

Info

Publication number: WO1995017552A1
Application number: PCT/EP1994/004284
Authority: WO
Inventors: Erich Nuding; Hans-Ulrich Dietze; Alfred Kais; Hubertus Höhne; Peter Schultz
Original assignee: Bwg Butzbacher Weichenbau Gmbh
Priority date: 1993-12-23
Filing date: 1994-12-22
Publication date: 1995-06-29
Also published as: EP0736122B1; AU1414495A; FI962578A; DE59406942D1; FI962578A0; ATE171230T1; EP0736122A1

Abstract

To create a height-adjustable sleeper (10) for a fixed track, the invention provides a spindle element (16) that has two collets that can be turned relative to each other, one of which engages in a nonrotating nut set in the sleeper.

Description

description

threshold

Threshold for arrangement on an essentially flat base, in particular intended for a slab track, preferably with recesses on the base side, which can be filled, at least in some areas, with a casting compound which adheres to or connects to the base and to the threshold, wherein the threshold can be adjusted in height by means of at least one spindle element which passes through a recess in the threshold and is arranged in a recess which runs through the threshold from its top to its underside,

In spite of various improvements in the speed range of, for example, more than 200 km / h, a track superstructure with rail sleepers and ballast shows particular technical limits, so that more and more use is made of the construction of a fixed carriageway with stable, rigid sleeper bearings. The threshold is placed like concrete sleepers on asphalt or concrete slabs or in appropriate troughs and then partially cast in a casting compound such as concrete or asphalt. A height adjustment can be carried out using spindles running within the threshold. In order to achieve a good connection with the sealing compound, the sleepers can have recesses on the sole side. This also results in a fixation against horizontal loads, especially when cornering (DE 34 29 413 AI). In order to fix the sleepers in the direction of the track, in particular in the area of a switch, a reinforcement (transverse reinforcement) is provided, which can consist of conventional reinforcing bars such as round steel. For this purpose, the sleepers are drilled through transversely to their longitudinal direction in order to then pull the reinforcement through. Then the threshold is cast, the casting compound must run above the reinforcement.

This measure makes the reinforcement an integral part of the threshold, so that it is not possible to replace it without destroying the reinforcement. In order to ensure that the bores do not lead to an inadmissible destruction of the threshold itself, these have to be made at a relatively large distance from the base. As a result, the threshold has to be cast in quite high.

The present invention is based on the problem of providing a threshold of the type mentioned at the outset which can be securely fastened to the base and can easily absorb transverse forces. A partial aspect of the invention also deduces simple installation or alignment both in the horizontal and in the vertical direction. Furthermore, the possibility should be given to remove the threshold from the base again with simple aids.

Finally, the present invention is based on the problem of developing a sleeper, in particular a concrete sleeper intended for a slab track, in such a way that reinforcement of a plurality of successive sleepers, in particular that of a switch with reinforcement running in the longitudinal direction of a track, can be carried out in a simple manner without on the threshold a processing possibly leading to a weakening is necessary. If necessary, a threshold can also be exchanged without the reinforcement itself being destroyed.

According to the invention, the problem is essentially solved in that the recess through which the spindle element passes comprises an upper and a lower section of different cross sections over a step, that at least abundantly extends in the lower section of a first sleeve of the spindle element, which is connected to an element which is supported on the support and from which a second sleeve, which extends at least in regions into the upper section and is rotatable to the first sleeve, extends into one the step-supported nut secured against rotation or an equivalent element engages.

The threshold can consequently be raised or lowered by rotating the upper sleeve, so that vertical alignment is possible.

This measure also ensures that the threshold can be easily removed even when the recesses are cast under; because when the second sleeve is turned and the threshold is raised, the threshold is automatically lifted off the surface like the road.

The spindle element preferably comprises a plate which is supported on the base and which is arranged in a cavity of the threshold and is surrounded on the circumference by walls of the cavity. This measure ensures that potting material cannot get into the cavity when the threshold is poured under.

In order to ensure, even when the threshold is raised, that casting compound cannot get into the chamber, a development of the invention provides that the plate has a peripheral edge extending into the chamber, the height of the edge being at least equal to the maximum through the spindle element enabling stroke.

The spindle plate preferably has a rectangular shape, so that consequently the walls delimiting the cavity also form a rectangular shape.

The problem is also solved by a threshold in that successive sleepers have a threshold looking in the track direction Reinforcement in the form of reinforcing bars, such as round steels, can be connected, the reinforcement running below the threshold being held by fastening elements extending from the threshold.

Deviating from the known prior art, the reinforcement does not run inside the threshold, but below it, so that after completion of the threshold, bores or the like are not necessary. Due to the fact that the reinforcement runs on the sole side, pouring the threshold apart from the reinforcement is only necessary to the extent that the required fixing is ensured.

In particular, the reinforcement is releasably connected to the fastening element, so that consequently an exchange of a threshold is possible without the reinforcement being damaged.

According to a preferred embodiment, the attachment is based on a plate element which can be supported on the base, by means of which the threshold to the base can be adjusted. With these measures, the reinforcement runs at a defined distance from the base.

To fix the reinforcement in position, the plate element can have receptacles in the form of open bearings or closed brackets on its side facing the sleeper. The former offers the possibility that it is also possible to subsequently attach the reinforcement, such as round steel, to the plate element.

This embodiment also has the advantage that the threshold can be replaced without having to remove the plate element and the reinforcement emanating from it.

One proposed solution provides that the fastening element starts from a screw or spindle element passing through the threshold and can be changed in distance from the sole of the threshold. In the case of a threshold in the form of a concrete sleeper with reinforcing bars running in the longitudinal direction, it is provided that the fastening element is anchored in the threshold and preferably starts from a reinforcing bar. The fastening element can have a sleeve-like or clamp-like receptacle for the reinforcement connecting successive sleepers.

In a further embodiment, a U-shaped bracket with side leg sections running parallel or approximately parallel to the underside of the reinforcement preferably extends in a plane extending parallel to the underside of the sleeper as a fastening for the reinforcement, which are connected in a manner to the side leg sections can, as is known from reinforcement technology.

The attachment can also be a U-shaped sheet metal element, the transverse leg of which extends along a nut of a screw connection, such as a push-through screw connection, which is arranged within the sleeper, and whose side legs penetrate the sleeper side and have openings for the reinforcement. According to this proposal, the push-through screw connection already present for fastening a ribbed plate or a sliding chair is used in order to serve as anchoring for fastening the reinforcement.

A proprietary proposal for the height adjustment of a threshold with a rail section that can be fastened or supported on a fastening plate such as a ribbed plate or sliding chair provides that between the fastening plate and the threshold perpendicular to the longitudinal direction of the rail, adjustable first and second and at least in sections superposed wedge or ramp-shaped Steps run, which are sections of intermediate plate elements which preferably run between the fastening plate and the threshold. The first and second wedge-shaped or ramp-shaped steps can have a structuring that enables latching, such as sawtooth-shaped structuring, in their at least partially superimposed surfaces. With this measure it is only necessary to adjust the ramp or wedge-shaped steps against each other, whereby a height adjustment of the rail section is possible.

Even if intermediate plates are preferably arranged between the sleeper and the fastening plate, there is of course also the possibility that the mutually adjustable wedge or ramp-shaped steps extend from the fastening plate and / or the sleeper or only one intermediate plate element is provided which is provided with the mounting plate or the threshold interacting wedge or ramp-shaped steps.

If the wedge-shaped or ramp-shaped steps start from mutually adjustable intermediate plate elements, a further development of the invention provides that fastening elements starting from the fastening plate such as push-through screw connections penetrate elongated holes in the direction of adjustment of the intermediate plate elements. This ensures that the mounting plate to the threshold can only be adjusted in height, but not in the plane.

Of course, the teaching according to the invention is not left even if the intermediate plates are arranged between the threshold and the base.

Further details, advantages and features of the invention result not only from the claims, the features to be extracted from them - individually and / or in combination - but also from the preferred exemplary embodiment which can be found in the following description of the drawing.

Show it

1 shows a section of a threshold intended for a slab track,

2 shows a section along the line AA in FIG. 1, but only the threshold, Fig. 3 shows a section of a second embodiment of a threshold for a

Slab track,

4 - 6 sectional views through sleepers with different fastenings for reinforcements,

7 shows a detailed view of the fastening according to FIG. 6,

8 shows a section through a concrete sleeper with a further embodiment of a fastening for a reinforcement,

9 is a longitudinal section through a further threshold for a slab track,

10 is a side view, partly in section, of a further embodiment of a threshold to be arranged on a slab track,

11 is a bottom view of the threshold in area II of FIG. 10,

12 is an enlarged section of the threshold in area II of FIG. 10,

13 shows a section through a rail section fastened on a ribbed plate and

14 intermediate plates according to FIG. 13.

1 to 9, in which basically the same elements are provided with the same reference numerals, longitudinal or cross sections of concrete sleepers (10) are shown, which are intended for a solid carriageway. 1, 3 and 9, the concrete sleepers (10) are cast in a concrete trough (12) with filling concrete (14). Other possibilities for fixing the position of the concrete sleeper (10) are also given. For example, the concrete sleeper (10) can be used on concrete slabs lie on.

Irrespective of this, the height of the concrete sleeper (10) can be adjusted via a spindle element (16) to a base which is not shown.

Furthermore, the concrete sleeper (10) has a structuring on the underside, which is filled with the filling concrete (14) or another pouring material in order to ensure a positive connection, which prevents the sleeper (10) from moving when there are transverse forces acting on it.

The concrete sleeper (10) has reinforcing bars running in its longitudinal direction, which are provided with the reference numerals (18) and (20) by way of example.

In order to fix successive concrete sleepers (10) to one another, in particular in the area of a switch, a reinforcement (transverse reinforcement), which consists of known reinforcing bars such as round steel bars, runs in the longitudinal direction of the rails (22) accommodated by the concrete sleepers (10). In order to connect the reinforcement to the concrete sleepers (10) in a simple manner without having to be reworked and without the concrete sleepers (10) having to be cast in to an undesired extent, the invention provides that the reinforcement below the sleepers (10) , that is to say along its sole (24) in the manner described below, a detachable connection being optionally provided. This has the advantage that an exchange or renewal of concrete sleepers (10) is possible without the reinforcement itself having to be destroyed.

According to the embodiment of FIGS. 1 and 2, a reinforcement formed by a round bar (26) is fastened by means of a bracket (28) which is poured into the concrete sleeper (10). For this purpose, the bracket (28) is placed on two round steels (18), (20) of the longitudinal reinforcement of the concrete sleeper (10), which run in a plane that extends parallel to the base (24). The U-shaped bracket (28) has side leg end sections (32) and (34) running parallel to the sole (24), which run transversely to the longitudinal direction of the concrete sleeper (10) and with the round steel bar (26) in the usual manner Example can be connected by welding or wire.

According to the embodiment of FIG. 3, different fastenings are also provided for reinforcements (36) and (38), which are also preferably made of round bars.

The reinforcements (36) are fastened to a plate (40) which is part of the spindle element (16). The spindle element (16) for adjusting the height of the concrete sleeper (10) passes through a recess (42) in the concrete sleeper (10) and comprises a cylindrical upper section (44) and a cylindrical lower section (46). The lower section (46) is larger on average than the upper section (44), so that a step (48) runs between them. A sleeve (50) extends from the plate (40) and extends into the lower section (46) through the recess (42).

Within the upper section (44) of the opening (42) extends a further sleeve (52), which is supported on the one hand on the lower sleeve (50) and on the other hand has an external thread onto which a nut (54) is screwed, which in the lower section (46) of the opening (42) is arranged, the step (48) resting on the nut (54) or on a disk provided on this. Furthermore, the nut (54) is secured against rotation, so that when the upper sleeve (52) ends, which ends at a distance from the top of the threshold (10), the latter is raised or lowered. In order to be able to rotate the sleeve (53), there are notches (56) arranged diametrically to one another.

So that on the one hand an uncontrolled adjustment of the upper sleeve (52) is excluded and on the other hand the sill (10) itself is anchored, a bolt or screw (58) is present which passes through the upper sleeve (52) and with its external thread and cooperates with an internal thread embedded in the inner wall of the lower sleeve (50). The bolt (58) provides a positive connection Connection between the threshold (10) and the casting compound via the cast-in support plate (60) or the reinforcement (74). After tightening, the head of the bolt (58) lies on the threshold (10) and at the same time closes the opening (42).

On the side of the plate (40) facing the concrete sleeper (10), U-shaped brackets (60), (62) are fastened transversely to the longitudinal direction of the concrete sleeper (10), which together with the plate (40) are tubular or sleeve-shaped Form recordings (64), (66) for the transverse reinforcements (36).

Corresponding receptacles (64) and (66) are also provided for the reinforcements (38). However, a plate (68) required for this is not part of a spindle element, but is fixed in position with the aid of a bolt (70) relative to the concrete sleeper (10). The bolt (10) is preferably tightened to such an extent that the upper sides of the U-shaped elements (60) and (62) rest on the underside of the concrete sleeper (10). In order to enable a corresponding adjustment, a plate (72) with an internal thread extends from the plate (68), into which the bolt (70) engages.

This construction enables the plate (68) and thus the receptacles (64) and (66) to be detached from the concrete sleeper (10) if the latter is to be replaced or renewed.

4, the spindle element (16) also serves as a fastening for a reinforcement (74) which, however, penetrates the lower sleeve (50) itself, so that additional receptacles are not required.

However, other elements for fastening a transverse reinforcement (76) intended for concrete sleepers (10) and necessary for a solid carriageway can also be used. This is illustrated by FIGS. 6 and 7.

To attach a ribbed plate to the concrete sleeper (10), for example, push-through fittings are used, one from the top of the ribbed plate or the Comprise sliding chair outgoing bolt (78) which passes through a non-rotating nut within the concrete sleeper (10).

The opening for the bolt (78) and a recess for the nut (80) are preferably lined with a plastic part (82) which also serves as an anti-twist device.

According to the invention, a U-shaped element such as sheet metal part (84) is now provided, which runs with its transverse leg (86) along the top of the nut (80), whereas its side leg (88) and (90) extend to the bottom of the Extend the concrete sleeper (10) and have openings to accommodate the reinforcement (76).

In Fig. 8 fastenings (92) and (94) for a transverse reinforcement (96) are shown, which are cast in with the longitudinal reinforcements (18), (20) of the concrete sleeper (10). The fastenings (92), (94) form sleeve-like receptacles (98), (100) for the reinforcement and are placed on the round steels (18), (20) in the manner of clips.

A corresponding fastening (94) can also be seen in FIG. 9 (left side). Alternatively, there is the possibility of fixing a transverse reinforcement (102) in a section (104) which is preferably made of plastic and which is part of the anti-rotation device of the nut (54) of the spindle arrangement (16).

3 and 5, reinforcements (106) and (108) can also be placed on bearings (107) and (109) open towards the concrete sleeper (10) in order to tighten the plate (68) by means of the bolt (70) to clamp the reinforcements (106) and (108) between the underside of the concrete slab (10) and the U-shaped bearings (107) and (109).

10 to 12, essential features of a threshold (110) intended for a slab track will be explained again. Also on the again a height adjustment of the threshold (110), as already described in connection with FIGS. 3 and 4, is discussed.

10 shows a side view and partly in section of the threshold (110), which is preferably made of concrete, which in the exemplary embodiment consists of two sections (112) and (114) which are rigidly connected to one another via a plate (116) are.

The threshold (110) lies on a paved surface as a base (118) such as an asphalt surface or one or more concrete slabs. The threshold (110) has, in the region outside the spindle elements (120), (122) and (124), (126) described below and corresponding to FIGS. 3 and 4, ribs running perpendicular to the longitudinal direction of the threshold (110) , two of which are provided with the reference numbers (128) and (130) purely by way of example. If the threshold (110) is a concrete threshold, the ribs (128) and (130) are concreted on.

The surfaces (132) and (134) of the ribs (128) and (130) facing the base (118) run in one plane, so that when the threshold (110) is straightened in the level of the base (1 18) from the threshold ( 110) a straightening machine can be added. This makes it possible to easily align the threshold (110) along the base (118).

The ribs (128) and (130) delimit recesses (136) on the underside of the threshold (110) which are accessible from the long side. This results in the possibility that the recesses (138) can be cast under with a potting material such as concrete potting or asphalt potting in order to establish a connection between the threshold (110) and the roadway (118). The potting compound consequently brings about a positive connection between the threshold (110) and the roadway (118).

In order to be able to align the threshold (110) not only horizontally but also vertically, the spindle elements (120), (122), (124) and (126) are in the threshold (110) penetrating recesses (138) are arranged such that they can be adjusted in height such that actuation of the spindle elements (120), (122), (124) and (126) in the manner described below causes the threshold (110) to be raised and possibly lowered again can.

The recess (128) comprises a cylindrical upper section (140) and a cylindrical lower section (142). The lower section (142) is larger in diameter than the upper section (140), so that a step (144) is formed between them. Furthermore, there is an even larger bottom section (146) compared to the lower section (142), which is formed by a chamber-side chambering of the threshold (110). A spindle plate (148) is adapted to the cavity (146) and, in the exemplary embodiment, has a rectangular geometry in order to form an anti-rotation device.

In order to ensure that potting compound cannot penetrate into the recess (146) when the threshold (110) is poured under, the cross sections of the spindle plate (148) and the recess (146) are matched to one another. In addition, the spindle plate (148) can have a peripheral edge, not shown, which extends along the inner wall of the chamber (146).

The chamber (146) is therefore delimited by a concrete sleeper (110) by a concrete (150) which is rectangular in plan view.

A sleeve (152) extends from the spindle plate (148) and extends into the lower section (142) of the opening (144). Another sleeve (154) extends from the upper end area and can be rotated to the lower sleeve (152).

The upper sleeve (154) has an external thread onto which a nut (162) is screwed, on which on the one hand the step (144) rests and which on the other hand is secured against rotation, so that by turning the upper sleeve (154) raising or lowering the Threshold (110) takes place.

In the end region, the upper sleeve (154), which ends at a distance from the upper side (156) of the threshold (110), has notches (158) which are arranged diametrically to one another and into which a tool can engage in order to rotate the sleeve (154).

In order to rule out an uncontrolled adjustment of the upper sleeve (154) to the concrete sleeper (110) after the adjustment, a securing bolt (160) is provided which passes through the upper sleeve (154) and has an external thread with one in the inner wall of the lower sleeve (152) internal thread interacts. After tightening, the head of the bolt (160) rests on the upper side (158) of the threshold (110) and at the same time closes the opening (138).

The spindle elements (124) and (126) present in the area of the adjoining sleeper sections (112), (114) in FIG. 10 have the same structure with respect to the adjustment possibility of the sleeper (110) as the spindle elements (120) and ( 122). In addition, however, the rigid connection (116) extends from the spindle elements (124) and (126) in order to rigidly couple the sleeper sections (112) and (114) to one another.

13 and 14 show an alternative solution for adjusting the height of a rail section (164) which, in the exemplary embodiment, is fastened to a ribbed plate (166) without any restriction being intended to be made.

It is thus possible to vertically adjust the track section (164) or the ribbed plate (166) relative to a threshold (168) by using intermediate plates (170) and (172) between the ribbed plate (166) and the threshold (168). are arranged, which have superposed wedge-shaped or ramp-shaped steps (174), (176). The superimposed surfaces (178) and (180) of the ramp or wedge-shaped steps (174) and (176) are sawtooth-shaped in order to enable mutual locking. In order to raise the rail section (164), it is therefore only necessary that the intermediate plates (172) and (174) are shifted against each other. Depending on the steepness of the wedge-shaped or ramp-shaped steps (174), that is to say the angle of inclination of the surfaces (178) or (180) to the horizontal, lifting is necessary even with a slight relative displacement of the intermediate plates (172) and (174) the ribbed plate (166) and thus the rail section (164) possible.

The structuring provided in the surfaces (178) and (180) ensures that after adjusting the intermediate plates (172) and (174) against each other it is no longer possible to slide back.

In order to adjust the rib plate (155) only vertically, but not horizontally to the threshold (168) when the intermediate plates (172), (174) are moved in a controlled manner, push-through screw connections starting from the rib plate (166) push through elongated holes in the intermediate plates (172 ), (174).

Claims

Claims threshold

1. Threshold (10, 110) for arranging on an essentially flat base (118), in particular intended for a slab track, preferably with recesses (136) on the underside, which at least in some areas have a both on the base and on potting compound adhering to or connecting to the threshold can be filled, the threshold being height-adjustable via at least one spindle element (16, 120, 122, 124, 126) passing through a recess (42, 138) of the threshold, which in one of the thresholds Recess (42, 138) running from its top (154) to the bottom, characterized in that the recess (42, 138) penetrated by the spindle element (16, 120, 122, 124, 126) extends over a step (48 , 144) continuously includes an upper and a lower section (44, 46, 140, 142) of different cross sections, that at least in some areas a first sleeve (50, 152) of the spindle element is located in the lower section it extends, which is connected to an element (60, 148) which is supported on the base (118) and from which a second sleeve (52, 154) extending at least in regions in the upper section and extending to the first sleeve, which engages in an anti-rotation nut (54, 162) supported on the step or an element having the same effect.

2. Threshold according to claim 1, characterized in that the element supported on the base (118) is a plate element (60, 148) which can be arranged in a recess (146) on the base side of the threshold (110) which can be arranged in the lower section (142) of the recess (136) penetrated by the spindle element (16, 120, 122, 124, 126).

3. Threshold according to claim 1 or 2, characterized in that the plate element (148) is surrounded on the circumferential side by walls (150) of the chamber or has a circumferential edge extending along the inner wall of the chamber (146).

4. Threshold according to at least one of the preceding claims, characterized in that the chamber (146) delimiting walls such as Aufbetonie¬ stanchions (150) form a rectangular shape.

5. Threshold according to at least one of the preceding claims, characterized in that the walls (150) and the structuring (128, 130) like ribs with their free surfaces (118) facing surfaces (132, 134) extend in one plane.

6. Threshold according to at least one of the preceding claims, characterized in that the in the upper section (44, 144) extending second sleeve (52, 154) has a larger inner diameter than the first sleeve (50, 152), the inner wall Has thread.

7. Threshold according to at least one of the preceding claims, characterized in that for locking the spindle element (16, 120, 122, 124, 126) a screw bolt (58, 160) supported on the top of the threshold (10, 110) with the first Sleeve (50, 152) can be screwed.

8. Threshold according to at least one of the preceding claims, characterized in that the threshold (110) preferably consists of rigidly interconnected sections (114).

9. Threshold according to at least one of the preceding claims, characterized in that the recesses (136) by perpendicular to the longitudinal axis of the threshold ribs (128, 130) limited and accessible from at least one long side of the threshold (110).

10. Threshold according to claim 9, characterized in that the threshold (110) via the sealing compound is positively connected to the base (118).

11. Threshold (10) according to one of the preceding claims, characterized in that successive sleepers in the form of a reinforcement extending in the track direction from the sleepers (26, 36, 38, 60, 76, 96, 102, 106, 108) connectable preferably reinforcing irons such as round bars, the reinforcement is kept below the threshold (10) extending from emanating from the threshold fastening elements (28, 50, 64, ^'66, 88, 90, 92, 94, 104, 107, 109) .

12. Threshold according to at least one of the preceding claims, characterized in that the reinforcement (36, 38, 60, 76, 96, 102, 106, 108) releasably with the fastening (50, 64, 66, 88, 90, 92, 94, 104, 107, 109) is connected.

13. Threshold according to at least one of the preceding claims, characterized in that extending in a preferably parallel to the underside of the threshold extending longitudinal reinforcements (18, 20) of the concrete sleeper (10) a U-shaped bracket (28) with parallel or in approximately parallel to the underside of the side leg sections (32, 34) as a fastening for the reinforcement (26) running in the longitudinal direction of the track.

14. Threshold according to at least one of the preceding claims, characterized in that the fastening (50, 64, 66) starts from the plate element (40, 68).

15. Sleeper according to at least one of the preceding claims, characterized in that the plate element (40, 68) on its side facing the sleeper (10) the attachment in the form of open bearings (107, 109) or sleeve or tubular receptacles ( 64, 66).

16. Sill according to at least one of the preceding claims, characterized in that the fastening starts from the screw or locker element (16, 70) passing through the sill (10) and the distance to the underside of the sill (10) can be changed.

17. Sill according to at least one of the preceding claims, characterized in that the fastening (28, 92, 94) is anchored in the sill (10) and preferably extends from a longitudinal reinforcement (18, 20).

18. Threshold according to at least one of the preceding claims, characterized in that the fastening (94, 96) has a sleeve-like or clip-like receptacle for the reinforcement (96).

19. Threshold according to at least one of the preceding claims, characterized in that the fastening (88, 90) is a U-shaped element (84), the transverse leg of which is arranged along a nut within the threshold (10) of a screw connection such as a push-through screw connection (78) and pass through its ^~ side legs (88, 90), the threshold on the bottom side and Durchbre¬ deviations for the reinforcement (76).

20. Threshold (168) according to one of the preceding claims, preferably having a track section (164) which can be fastened or supported on a fastening plate (166) such as a ribbed plate or sliding chair, characterized in that between the fastening plate (166) and the threshold (168) perpendicular For the longitudinal extension of the rails, first and second steps (174, 176), which are at least partially superimposed on one another and which are adjustable relative to one another, run along sections which are sections of intermediate plate elements (170, 172) which preferably run between the fastening plate and the sleeper.

21. Threshold according to at least claim 20, characterized in that the first and second wedge-shaped or ramp-shaped steps (174, 176) in their at least partially superimposed surfaces (178, 180) have a structuring which enables latching, such as sawtooth-shaped structuring.

22. Threshold according to at least one of the preceding claims, characterized in that from the fastening plate (166) outgoing fastening elements such as push-through fittings in the adjustment direction of the intermediate plates (170, 172) pass through elongated holes.