EP1891271B1 - Lifting and directing tie - Google Patents

Abstract

The invention relates to a method for replacing a rail for track vehicles, which is laid in a fixed running track by means of ties. According to said method, at least the old ties (11a) of the old rail (10a), which is substantially composed of running rails (14) and the old ties, are replaced with new ties (11b). Some of the old ties (11a') are first removed from the recesses thereof in the fixed substructure (13) of the running track and are replaced by lifting/directing ties (15) which are inserted into the recesses while the other old ties (11a'') initially remain in the recesses (12'') thereof and support the running rails. The remaining old ties (11a'') are replaced with new ties (11b'') once the rail has been placed in the desired vertical and lateral position with the aid of the lifting/directing ties. The lifting/directing ties are then replaced with new ties (11b') once the previously installed new ties (11b'') have been blocked in the recesses (12'') thereof in the position obtained following the vertical and lateral adjustment.

Description

The invention relates to a Heberichtschwelle for the renewal of laid by means of sleepers in a fixed track track for rail vehicles.

Out WO 95/17552 A1 is a höhenveistellbare threshold is known, which is suitable in the production of a solid roadway.

After a few years of operation, not only tracks installed on ballast need to be renewed, but also tracks laid in a fixed track have a limited service life and must be renewed after their expiry. The renewal of such a track is particularly problematic when it comes to at least partially maintain rail traffic, because in such cases can usually be worked on the track only during a few hours at night and / or weekend, if no trains roll over the track or at least be temporarily diverted. Such conditions occur, for example, in the rehabilitation of subway tracks, which are difficult to master due to the limited space here. The previously used in the rehabilitation of laid in a solid road subway tracks for use methods are very complicated, expensive and tedious, since in the short breaks, where there is no rail traffic, only a short track piece can be renewed and this one Variety of steps is required, which make the known methods so expensive.

The object of the invention is to provide a Heberichtschwelle that can be used in a particularly advantageous manner in a process for renewal of a laid track in track for rail vehicles and it preferably also allowed to use the track during construction breaks anyway makeshift, so that entire routes do not have to be permanently shut down.

This object is achieved with the invention by a Heberichtschwelle having at least one usable in a recess in the fixed roadway base threshold block and a lockable on the rails adjustment plate which is adjustable relative to the threshold block at least in their altitude. For this purpose, the Heberichtschwelle be provided with at least one adjusting spindle having height adjustment.

By means of such Heberichtschwellen it is possible in a particularly simple manner to renew a track laid in a fixed track for rail vehicles, at least the old sleepers of a existing essentially rail and old sleepers old track are exchanged for new sleepers and wherein the thresholds are arranged in recesses of a solid roadbed are to be carried out so that a part of the old sleepers is removed from their recesses and replaced by inserted in the recesses Heberichtschwellen, while another part of the old sleepers initially still remains in their recesses and supports the rails, and wherein the first remaining part of the old sleepers Neuschwellen is replaced after the track has been set by means of the Heberichtschwellen in the desired height and lateral position, and then the Heberichtschwellen be replaced by Neuschwellen after the previously installed Neuschwellen in their position obtained after the height and side position were locked in their recesses.

The basic feature of this approach is therefore not to replace all the thresholds of a track or track sections at once, but initially only a certain part of old sleepers to replace the temporary built Heberichtschwellen, while the remaining part of the old sleepers initially maintains its function as a supporting body for the rails , In this case, it is possible to work in such a way that first every second (or third, fourth) old threshold is replaced by a temporary threshold value. The remaining (secondary) old sleepers remain in their recesses and support the rails safely enough that a rail vehicle can safely drive over the track at any rate at a reduced speed. With the help of the Heberichtschwellen can then be aligned in the new desired height and lateral position in a further downtime, in which can be worked on the track, the Heberichtschwellen not only allow the exact alignment of the track, but also resulting from the driving Forces can be safely removed into the roadway substructure. The remaining (secondary) sleepers can then be exchanged for new thresholds, which are after their installation on the rails initially with some play in their respective recesses and as defined by the Heberichtschwellen, correct height and lateral position of the rails on which they are attached, then also already in their correct orientation. In this they can be locked in the recesses and as soon as this locking is done permanently, the Heberichtschwellen can be removed and replaced with new thresholds.

In particular, for weight reasons, it has proven to be advantageous if the Heberichtschwelle has two threshold blocks with associated adjusting plates, wherein the threshold blocks are connected to each other by means of preferably removable tie rods or connectable. The Heberichtschwelle invention is then designed in the manner of a two-block threshold, wherein the two threshold blocks are substantially only below the two rails and the required track spacing between the rails is determined by the tie rods.

It is useful if an elastic support sole is arranged on the underside of the sleeper block, which allows a sinking of the Heberichtschwelle in this receiving recess within limits when a rail vehicle travels over the track. The support sole may preferably be made of polyurethane or the like. consist. To lock the Heberichtschwelle in the receiving recess in the directions that lie in the plane of the two Rail is clamped, are preferably provided between the threshold block and the recess on the outer end side and on the front and rear side of the threshold block effective clamping elements, which may consist in particular of wedge elements, eccentric elements and / or screws.

Fig. 1-8

vereinfachte Darstellungen eines zu erneuernden Gleises in verschiedenen Stadien mit erfindungsgemäßen Heberichtschwellen, jeweils im Längsschnitt;

Fig. 9

eine nach Fig. 1 bis 8 zum Einsatz kommende, erfindungsgemäße Heberichtschwelle im in einer Ausnehmung eingebauten Zustand in Vorderansicht und Querschnitt durch die Ausnehmung;

Fig. 10

eine Einzelheit X der Heberichtschwelle nach Fig. 9 in einer Ansicht und teilweise im Schnitt; und

Fig. 11

den Gegenstand der Fig. 10 in einer Draufsicht.

Further features and advantages of the invention will become apparent from the following description and the drawing, wherein a preferred embodiment of the invention is explained in more detail by way of example. It shows:

Fig. 1-8

simplified representations of a track to be renewed in various stages with Heberichtschwellen invention, each in longitudinal section;

Fig. 9

one after Fig. 1 to 8 used, according to the invention Heberichtschwelle inserted in a recess state in front view and cross section through the recess;

Fig. 10

a detail X of the Heberichtschwelle after Fig. 9 in a view and partly in section; and

Fig. 11

the object of Fig. 10 in a top view.

In the Fig. 1 to 8 are the essential steps of a not belonging to the invention method for the renewal of a track 10, which is laid by sleepers 11 in a fixed lane. Fig. 1 shows the old track 10a to be renewed, in which the old sleepers 11a, for example old wooden sleepers, are arranged in recesses 12 of a fixed carriageway substructure 13 and carry the rails 14. The track may, in particular, be the track of a subway or other means of public transport, the work required for the replacement being able to take place during the night only during the comparatively short breaks in service which the track is not used. Under these conditions, after a few hours, during which it is possible to work on the track, at least its provisional trafficability must be ensured for the next day.

When renewing the fixed carriageway, a part 11a 'of the old sleepers 11a is first removed from their respective recesses 12'. For the removal of these old primary sleepers 11a ', in a track section to be renewed, which may have a length of, for example, 25-100m, the rails 14 of each second old sleepers 11a are released and the rails then with the old primary sleepers 11a not detached from them 'a bit far from the track bed raised ( Fig. 2 ), whereby the old primary sleepers 11a 'are dug out of their respective primary recesses 12' while the old secondary sleepers 11a 'previously released from the rails remain in their original position in the secondary recesses 12 ".

The old primary sleepers 11a 'can be dismantled from the rails 14 in the raised state of the track section. The vacated primary recesses are cleaned, freed from any existing loose concrete parts and roughened if necessary on their side surfaces and their bottom. Connecting are used in the primary louvres 12 'Heberichtschwellen 15 whose structure in the Fig. 9-11 is shown in detail and serve for the reorientation of the track and to a temporary support of the rails, which is sufficient to allow a driving operation on the track, even without the support of other (secondary) thresholds.

After inserting the Heberichtschwellen 15 in the primary recesses 12 '( Fig. 3 ), the rails are lowered and first attached to the remaining in the secondary recesses 12 "Alt-secondary sleepers 11a" ( Fig. 4 ). The rails are thus restored to their original orientation and the track can be re-used after re-attachment of the rails to the old secondary sleepers 11a "- possibly with reduced travel speed.

In the next step, the Heberichtschwellen 15 are screwed with suitable adapter plates 16 at the bottom of the rails 14. They can then be set up in the desired height and lateral position in the primary recesses 12 '. The Heberichtschwellen this consist essentially of two separate threshold blocks 17a, b, which are connected to each other by means of detachable tie rods 18 and at their top each have an adjustment plate 19 which carries the adapter plate 16 for connection to the respective rail 14 and by means of adjusting spindles in their altitude above the threshold block 17 can be adjusted. At the end face 20 of each threshold block 17 and at its front and rear sides 21 and 22, the lifting threshold can be adjusted and locked with clamping elements 23 in the receiving recess 12 'transversely to the rails and in their longitudinal direction. In this case, a locking is sought with a defined force, which can be done for example by wedge elements, eccentric and / or screws, which are not shown in detail in the drawings.

When setting the Heberichtschwellen is working so that first the adjustment plate and the overlying rail are connected by means of the adapter plate 16 and then lowered by means of adjusting spindles 24 for height adjustment of the underneath threshold block 17 so far that he firmly on the floor 25 of Recess 12 'rests. The threshold block is provided on its underside with an elastic support sole 26 made of polyurethane, which is able to compensate for unevenness in the bottom surface 25 of the recess 12 'and the same during the pursuit of the provisionally supported by the Heberichtschwellen track ensures a certain flexibility of the same.

After the Heberichtschwellen were thus brought into their correct altitude, they are braced laterally and in the rail longitudinal direction in their recesses with the help of the clamping elements 23, so that the Heberichtschwellen can take over the supporting function for the track. It is now possible to replace the old secondary sleepers 11a, which still remain in the secondary recesses 12 ", with new secondary sleepers.

The expansion of the old secondary sleepers can take place in the position of the track, in which it is supported and aligned in the manner described by the Heberichtschwellen. In this position, therefore, the rails 14 are in the lowered state and it is necessary to pull the Alt-secondary sleepers laterally under the rails, to which initially their connected to the rails adapter plates are completely dissolved and dismantled. Alternatively, it is also possible to disassemble the rails after setting up the Heberichtschwellen of these again and then together with the still connected Alt-secondary sleepers 11a "raise and then dismantle the Alt-secondary sleepers of the rails 12 "are then cleaned in a similar manner as before the primary recesses 12 'and optionally roughened or milled at its bottom and side surfaces and thereby prepared for the reception of new sleepers.

The new secondary sleepers 11b "are inserted into the vacated secondary cavities 12" (FIG. Fig. 6 ) and connected to the rails of the lowered track. The new secondary sleepers 11b "are aligned in the secondary recesses 12" in such a way that they maintain an approximately equal distance from the side surfaces 27 of the recesses both on the front and on the back. The new secondary sleepers are attached to the rails with the interposition of a relining, which can be formed in the simplest case of an adapter plate, as it is also used in the Heberichtschwellen.

Having ascertained that the track is correctly aligned after placing the new secondary sleepers in the secondary recesses and attaching them to the rails, the new secondary sleepers 11b may be potted in the receiving second recesses 12 ", which is done with low fugitive grout concrete, as used in the production of tracks in a fixed track by default. The grouting concrete 28 encloses the new secondary sleepers at their end faces and their side faces and flows if necessary. also in the space between the bottom of the recesses and the underside of the thresholds, so that the previously existing space between the new secondary sleepers and the secondary recesses is completely filled.

Once the grout has set and the threshold can no longer sit or move due to its own weight in the potting compound, the attachment of the new secondary sleepers to the rails is released again and the underfill or adapter plate between the rail and new secondary sleepers is removed. so that the newly installed sleepers maintain a sufficiently large distance from the rails during the curing process of the Vergußbeton, so that a rail vehicle or train safely go over the track, without in this case the new secondary sleepers are already burdened by the rail vehicle.

After the potting compound with which the new secondary sleepers 11b "were locked in their secondary recesses 12" is completely cured and can be loaded by the forces acting on the track, the Heberichtschwellen can be removed and replaced with new primary sleepers 11b '. This removal and replacement is analogous to the processes described above in connection with the secondary sleepers. The rails are so lifted after releasing the Heberichtschwellen arresting clamping elements together with the Heberichtschwellen, the Heberichtschwellen dismantled from the rails and Neu-primary sleepers 11b 'are inserted into the primary recesses 12' and then the rails are lowered again and then to the already installed and with the hardened potting compound fixed new secondary sleepers 11b "attached, the attachment again takes place with the interposition of relining pieces or use of adapter plates, so the rails do not rest directly on the actual thresholds The Neu-Primärschwellen 11b 'are also using Lining pieces attached to the rails and placed in their desired position and are then potted in the primary recesses with grout 28. Again, after the setting of the concrete, the relining between removed each new primary threshold and the rail and thereby provided for a sufficiently large distance between rail and threshold, so that the occurring during the crossing of a rail vehicle deflections of the rails on the newly installed primary primary sleepers can not penetrate and hinder the setting process.

It can be seen that with the method, the thresholds of even long track sections can be exchanged simultaneously, wherein the individual method steps can be carried out substantially detached from each other, i. it can interrupt the individual operations, which during these interruptions the negotiability of the track is still guaranteed-the method is thus particularly well for the exchange of a track that must remain open for traffic during most of the day and at the only can be worked for a few hours a day or at night. In carrying out the method described, the track is only ever passable for relatively short periods of time; the much time consuming hardening process of Vergußbetons requires in a particularly advantageous manner, no interruption of driving, since the newly installed sleepers are located at a sufficiently large distance below the rails so that it does not burden during curing of the Vergußbetons by moving over the track rail vehicles become.

In order to prevent damage to the newly installed thresholds or premature loading of the new sleepers, it is also possible, instead of the relining pieces to be removed during the setting operation, to raise the track by a certain predetermined amount with the aid of the lifting thresholds, for example with the aid of adjusting spindles 24 can be made, which are then rotated by a predetermined amount and so raise the adjusting plates 19 relative to the threshold blocks 17 by the desired amount, for example, about 2mm.

Claims (7)

1. Lifting and directing sleeper for renewing a track for rail vehicles which is laid in a solid trackway by means of sleepers, having at least one sleeper block (17) which can be inserted into a recess (12) in the fixed trackway substructure (13), and having an adjustment plate (19) which can be locked to the rails (14) and which can be adjusted, at least in its vertical position, in relation to the sleeper block (17).
2. Lifting and directing sleeper according to Claim 1, characterized in that the adjustment plate (19) can be adjusted transversely with respect to the longitudinal direction of the rails (14) and/or in its angular position relative to the sleeper block (17).
3. Lifting and directing sleeper according to Claim 1 or 2, characterized by a vertical adjustment device having at least one adjustment spindle (24).
4. Lifting and directing sleeper according to one of Claims 1 to 3, characterized in that said device has two sleeper blocks (17a, b) with associated adjustment plates (19), wherein the sleeper blocks (17a, b) are/can be connected to one another by means of preferably removable track rods (18).
5. Lifting and directing sleeper according to one of Claims 1 to 4, characterized by an elastic support base (26) which is arranged on the underside of the sleeper block (17).
6. Lifting and directing sleeper according to Claim 5, characterized in that the support base (26) is composed of polyurethane or the like.
7. Lifting and directing sleeper according to one of Claims 1 to 6, characterized by clamping elements (23), in particular wedge elements, eccentric elements and/or adjustment screws, which act on the outer end side (20) and the front and rear sides (21, 22) of the sleeper block (17).

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