EP2298993B1 - Method for renewing the rail substructure of a rail track - Google Patents

Description

The invention relates to a method for rehabilitating the track substructure of a railway line consisting of a ballast layer as well as a substructure layer located below the ballast layer according to the preamble of claim 1.

The substructure for the track of a railway line for train traffic consists - as a rule - of several layers. On the Erdplanum this is initially a Unterbauschicht. This consists of a layer protection layer (usually of gravel and / or sand) and / or an antifreeze layer. On this undercoat layer is then the gravel layer. On this gravel layer is finally the track of sleepers and rails.

From time to time it is necessary to rehabilitate the track substructure. There are various track-bound machines for this purpose. With these, the layers below the track, namely the gravel layer and the subgrade layer are processed or renewed in the track-bound method. The implementation of all steps is carried out by means of a continuously operating machine. The individual machines are united as a total technology in a single overall machine.

In WO-A-2009/029969 discloses a method for rehabilitating existing from a ballast layer and from a below the ballast layer underlay layer existing railway track, in which by means of a moving forward on the track work train with two separate and independently operable and individually usable working units in a continuous Workflow through the first unit of work the old gravel layer expanded and built a new gravel layer and expanded by the second unit of work, the old substructure layer and a new substructure layer can be installed.

The disadvantage of the known Sanierverfahren using a single overall machine is initially the need to create several intermediate storage on the one hand for the new materials (usually behind the entire machine) and on the other hand for the old materials (usually before the whole machine). Another major disadvantage is the complexity of the overall technique, since all machine components housed in a single machine are. This means that always all components must be carried. This is associated with a high cost.

On this basis, the invention has for its object to provide a refurbishment method of the type specified, which is on the one hand very flexible in terms of technology, and on the other hand is also cost-effective.

The technical solution is characterized by the features in the characterizing part of claim 1.

The basic idea of the remediation method according to the invention is to subdivide the entire work train into two separate and independently operable and individually deployable work units, which can be moved independently of one another and coupled to one another. These two units of work together define - if they are used together - the work on the one hand for the renewal of the ballast and on the other hand for the renewal of the underground structure. As stated, the two working units can be used independently. This means that the two work units can be moved completely independently of each other on the track during the renovation work. Of course, it is also possible that the two working units can be coupled together to create a mechanical bond. Through the first unit of work, the old gravel layer is removed, processed and processed and / or new gravel installed, while removed by the second unit of work, the old substructure layer and a prepared and / or new subgrade is installed. Next, the working units on material trolleys, in which non-reusable substructure material and new track substructure materials are cached. In this case, the first work unit for rehabilitation of the ballast layer except a device for the expansion, processing and installation of the ballast gravel layer first material trolley for Zwischenbunkerung the reusable portion of the ballast and second material trolley for temporary storage of non-reusable garbage on. To refurbish the underbody layer, the device for the removal of the old substructure layer and installation of the new substructure layer of the second working unit is a pre-head device, behind which the second working unit has a buffer trolley and third material trolley. In the initial state of a work cycle, the third material trolleys are filled with new substructure material and the second material trolleys of the first work unit for the non-reusable portion of the ballast are arranged directly adjacent to the second work unit. By means of the device of the first working unit is in a continuous forward movement removed the gravel layer and then cleaned immediately and a fraction of recycled, reusable ballast is temporarily bunkered in the first material trolley and the non-recyclable waste ballast in the second material trolley. The second unit of work builds with the pre-head device from the old underground layer and the new material, which is stored in the third material trolley, wherein the removed old substructure material fourth material trolley is supplied, the beginning of the cycle through the buffer trolley and later through emptied third material trolley are displayed. As soon as the second material conveyor trolleys with the old ballast and the third material trolleys with the old substructure material are filled, the second material trolleys are uncoupled from the first work unit and coupled to the second work unit. The new unit thus formed is moved counter to the direction of work to a storage area where the materials are stored separately from the material trolley and the third material trolley are filled with new sub-base material. In the meantime, the first unit of work brings the recycled gravel to the new subgrade.

The development according to claim 2 proposes that the second unit of work can approach from the storage space back to the first unit of work, so that the above-described working cycle can start again.

The development according to claim 3 proposes that the device of the first working unit can be assigned a transfer trolley and a ballast planning unit.

The development according to claim 4 proposes that the device of the second working unit except the expansion device for the old substructure material and the installation device for the new substructure layer may have a mounting device for a fleece and conveyor belts for the removal of the old substructure material and for the supply of the new substructure material ,

The advantage of using two separate machine units is that it is no longer necessary to create several intermediate storage facilities for new materials and for existing materials. Another decisive advantage of the remediation method according to the invention is that no complex overall technique must be used, but that it is possible to fall back on two work units, each of these two work units assuming a specific task. Thus, the first unit of work of redevelopment of the gravel layer and the second unit of work of rehabilitation of the underground layer. Since these work units can be used independently and individually, is a cost-effective and separate use of the respective integrated unit on other job sites possible without having to use the other work unit. It is thus possible, if necessary, to perform only a refurbishment of the gravel layer by means of the first work unit, without the subgrade being also rehabilitated. The acquisition costs of the module technology are therefore in a much smaller scope compared to the cost of an overall technology in which all machine components are inevitably integrated. Thus, the first unit of work can be used as a separate machine to serve other sites with this unit of work cost-oriented. It is dug with the first unit of work in the flow of the gravel and cleaned if necessary and bunkered on the track in cars. In the second unit of work, this applies accordingly. Thus, the system of the invention allows a total process for the rehabilitation of the track substructure with two separate and universally applicable machines, namely a machine for the rehabilitation of the ballast layer and a machine for the rehabilitation of the subgrade. According to the method, the first working unit moves in working direction and performs a ballast full excavation or a ballast cleaning in the gravel area. The unusable portions of the ballast can be temporarily bunkered on material ballast cars, as well as the reusable recycling ballast, which is temporarily bunkered on appropriate material trolley. After the first work unit has done its work, the second work unit moves in the direction of work and builds the substructure below the ballast and a new subheading again. If necessary, compression gears can be applied to the ground plan or to the new substructure material. Likewise, if necessary, a fleece can be installed. These aforementioned steps can be done without integrated ballast cleaning machine for the rehabilitation of the ballast layer. Thus, it is possible to carry out the supply and removal of all new and all materials to be excavated logistically from a single storage location. Furthermore, it is possible to work up the ballast in the track through the separate work units and reinstall it in the same place. Furthermore, a separation of waste rock and old Unterbauschicht is possible for cleaning the additional separation of waste materials from the cleaning. Due to the separate machine units according to the invention a shoring to the neighboring track is no longer required. This is inventively achieved in that the gravel is removed in a first operation. The depth of the ballast excavation for a shoring to neighboring track plays no role. In the production of the deeper excavation, the excavation and the backfilling, namely the installation of the new sub-base layer, is carried out in such a short distance that no more shoring is necessary. It is thus possible by the inventive two-part machine, a qualitative replacement of the one-piece machines. By arranging the work steps and transferring all logistic handling work to an intermediate storage facility, a continuous work execution is possible. Because after the machines have provided their working length, the machine drives for unloading and assembly to the common storage facility. During this unloading and equipping of the second working unit together with the material trolley for the no longer usable ballast, the first working device located in the construction field can already carry out the installation for the ballast in parallel and continuously. After the installation of this ballast, all units are again prepared for a new start of another working route. The loading and unloading are thus possible without the work, namely the removal, cleaning and replacement of the recycled gravel is interrupted.

With the first unit of work, which has the treatment device and the installation device for the reusable, recycled gravel, the ballast in the cleaning machine for waste and recyclable materials, namely the recycling gravel is separated. The gravel is thus worked up in the track and reinstalled in the same place. As a result, a separation of fines and coarse fraction of the ballast in the track-bound method is possible, namely while performing a renovation of the subgrade.

Both the cleaned ballast and the waste material collected during the cleaning of the ballast can be buffered in appropriate material trolleys.

From the second work unit, which has the device for removing the old substructure layer as well as the device for installing the new substructure layer, the old subgrade layer is replaced by new material. However, it is also conceivable from the basic principle that the material of the old substructure layer is processed and immobilized and reintegrated as recycling material. The core of the second unit of work is the machine located on the head for the rehabilitation of the subgrade. As a separate unit, this front-end unit for the rehabilitation of the underbody layer is solely responsible for excavating the subgrade layers and for installing the new substructure layer, without the need for an integrated machine for the remediation of the ballast layer. Thus, the on-head work unit is responsible for rehabilitation of the sub-base for excavating this sub-base below the free-depth gravel according to requirements. It is also responsible for the installation of the new substructure according to the requirements. Equally, if required, it can also incorporate a fleece, as well as compaction of the soil and / or the new subgrade.

The material trolleys are provided, on the one hand, to receive the removed, old substructure material and, on the other hand, to store the new substructure material to be installed.

This means that the machine transfers the removed substances to the material trolleys by means of conveyor belts for the rehabilitation of the subgrade. For this main conveyor belts can serve. Conversely, preferably by means of a transfer trolley, the new materials can be fed to the bypass conveyor belts running counter to the main conveyor belts of the pre-head machine of the second working unit. The supply and delivery of materials can also be reversed from the tape outlet ago. This means that the materials to be discharged can alternatively be transported via bypass conveyors and the new materials via the main conveyor belts. Here is free choice. By appropriate training of the material trolley can be used for the Unterbauaushub as well as for the substructure renewal the same car.

With respect to the second unit of work, a rolling system can be realized in that the material trolleys emptied with the new substructure material are used to fill them with the removed, old substructure material. It is only a buffer carriage required for this, which receives the old material removed at the very beginning. Because after the removal of the old substructure material can then be started with the installation of the new substructure material, so that accordingly empty the material trolley with this new sub-base material. The transport takes place by means of a system of conveyor belts, namely in particular main conveyor belts and bypass conveyors, so that the mutual transport routes do not interfere.

The entire first work unit or in particular a part of this first work unit can be logistically coupled with the second work unit to the old materials, namely the removed base coat and the no longer usable gravel share a common storage space, then on - separated according to the two types of material - this Materials can be stored. In this case, the total working unit of the second working unit and the first working unit with all non-reusable materials is driven counter to the working direction to the aforementioned intermediate storage. This makes it possible to supply all new and - as stated - removed materials logistically from a single storage location as well as dissipate. In this case, a separation of waste rock and old Unterbauschicht is possible in a cleaning, the additional separation of waste materials from the cleaning. Thus, a total of work is possible by the relocation of all logistical handling work on an intermediate storage.

In particular, only the material conveyor wagons are coupled with the waste ballast of the first unit of work to the second unit of work, so as to supply the waste ballast together with the old substructure material to the interim storage. Already at the removal of the The first working unit with the cleaned gravel can begin excavating the material of the substructure to be rehabilitated as well as the rubbish chute to the storage place with the ballast of the track. If necessary, a gravel planing device can bring in the gravel under the track and plan and compact.

Fig. 1

eine rein schematische Darstellung der beiden Arbeitseinheiten einerseits zum Sanieren der Schotterschicht und andererseits zum Sanieren der Unterbauschicht;

Fig. 2

die Vor-Kopf-Maschine der zweiten Arbeitseinheit in Fig. 1 zum Sanieren der Unterbauschicht.

An embodiment of a method according to the invention for rehabilitating the track substructure of a railway line is described below with reference to the drawings. In these shows:

Fig. 1

a purely schematic representation of the two work units on the one hand for refurbishing the ballast layer and on the other hand for rehabilitating the underground layer;

Fig. 2

the pre-head machine of the second work unit in Fig. 1 to refurbish the undercoat layer.

Fig. 1 shows a total work unit consisting of a first work unit 1 and a second work unit 2. The first work unit 1 is used to rehabilitate the ballast layer 3 of the track substructure of a railway line, while the second working unit 2 of the rehabilitation of underlying substructure layer 4 is used. This substructure layer 4 is a layer protection layer and / or an antifreeze layer. On the gravel layer is the track 5 consisting of sleepers and rails.

The first working unit 1 has as its central component a device 6 for the removal, preparation and installation of the ballast of the ballast layer 3. By means of this device 6, the gravel is first removed. The gravel thus developed is treated, into a reusable part of the ballast and into a non-reusable part of the ballast. The reusable portion of the ballast is fed to a first material trolley 7 and bunkered there, while the non-reusable waste ballast is fed to a second material trolley 8 and intermediately stored there.

The device 6 for the ballast is still a transfer car 9 and a ballast planning unit 10 assigned.

The second unit of work 2 consists mainly of a device 11 in front of head for the expansion of the old subgrade 4 and installation of the new substructure layer 4. This device 11 is again separately in Fig. 2 shown and shows in the drawing from the right on the left an expansion device 12 for the old substructure material 4, a mounting device 13 for a nonwoven and finally a mounting device 14 for the new substructure layer 4. Furthermore, conveyor belts 15 are also indicated for the removal of the old substructure material and for the supply of the new substructure material.

Behind the pre-head device 11 are - third - material trolley 16, a buffer 17 and a transfer trolley 18. The third material trolley 16 are filled in the initial state of the working cycle with new sub-base material.

• Mittels der ersten Arbeitseinheit 1, nämlich mit deren Einrichtung 6 wird der Schotter ausgebaut und gleich anschließend gereinigt. Man erhält eine Fraktion aus recyceltem, wiederverwendbarem Schotter. Dieser wird in den - ersten - Materialförderwagen 7 zwischengebunkert. Der nicht wiederverwertbare Abfallschotter hingegen wird in den - zweiten - Materialförderwagen 8 zwischengebunkert. Die erste Arbeitseinheit 1 befindet sich während der Arbeiten in einer kontinuierlichen Vorwärtsbewegung.

The operation is as follows:

• By means of the first working unit 1, namely with its device 6, the ballast is removed and immediately afterwards cleaned. This gives a fraction of recycled, reusable gravel. This is temporarily bunkered in the - first - material trolley 7. The non-recyclable waste ballast, however, is temporarily bunkered in the - second - material trolley 8. The first work unit 1 is in a continuous forward motion during work.

The second unit of work 2 builds with the previously described facilities, the old subgrade 4. At the beginning of the working cycle, the old substructure material is first supplied to the buffer carriage 17. After the removal of the old material, the new material is immediately installed, which is stored in the - third - material trolley 16. Since the initially filled material trolley 16 are empty, they can then serve to receive the old substructure material.

Once the - second - material trolley 8 with the old ballast and the - third - material trolley 16 are filled with the old substructure material, the - second - material trolley 8 are decoupled from the first working unit 1 and coupled to the second working unit 2. The thus formed - new - unit is moved counter to the direction of work to a storage space 19, where the materials from the material trolley 8, 16 are stored separately from each other. Following this, the - third - material trolley 16 are filled with new substructure material. In the meantime, the first working unit 1 applies the recycled crushed stone to the new base layer 4. Subsequently, the second work unit 2 again approaches the first work unit 1, so that the above-described work cycle can start anew.

LIST OF REFERENCE NUMBERS

1

first work unit

2

second work unit

3

gravel layer

4

subgrade

5

track

6

Device (for gravel)

7

first material trolley

8th

second material trolley

9

Transfer cars

10

Ballast grading purity

11

Device (for substructure)

12

Finishing device (for substructure)

13

Installation device (for fleece)

14

Installation device (for gravel)

15

conveyor belts

16

third material trolley

17

buffer car

18

Transfer cars

19

campsite

Claims (4)

1. A method for renewing the rail substructure of a rail track, the rail substructure consisting of a layer of gravel (3) and a layer of substructure (4) located below the layer of gravel (3), with use being made of two separate work units (1, 2) that can be operated independently of each other and used individually, wherein, in a continuous sequence of operations, the first work unit (1) is used to remove and recondition the old layer of gravel (3) and to install reconditioned and/or new gravel and the second work unit (2) is used to remove the old layer of substructure (4) and to install a reconditioned and/or new layer of substructure (4), and wherein the work units (1, 2) comprise material conveying wagons (7, 8, 16),
   characterised in that the two work units (1, 2) can be moved independently of each other and coupled to each other, wherein

   - for the purpose of renewing the layer of gravel (3), the first work unit (1) comprises not only an assembly (6) for removing, reconditioning and installing the gravel of the layer of gravel (3) but, additionally, also first material conveying wagons (7) for intermediately bunkering the reusable portion of the gravel and second material conveying wagons (8) for intermediately bunkering the non-reusable portion of the gravel, wherein the second material conveying wagons (8) are arranged directly adjacent to the second work unit (2), and

   - for the purpose of renewing the layer of substructure (4), the second work unit (2) comprises an assembly (11) ahead of the end thereof for removing the old layer of substructure (4) and installing the new layer of substructure (4) and, behind this assembly (11) ahead of the end thereof, a buffer wagon (17) and third material conveying wagons (16),

   wherein, in the initial state of a working cycle, the third material conveying wagons (16) are filled with new substructure material,
   wherein

   - in a continuous forward motion, the assembly (6) of the first work unit (1) is used to remove and immediately subsequently clean the layer of gravel (3) and to intermediately bunker a fraction of recycled, reusable gravel in the first material conveying wagon (7) and the non-reusable waste gravel in the second material conveying wagon (8),

   - the second work unit (2) including the assembly (11) ahead of the end thereof is used to remove the old layer of substructure (4) and immediately install the new material which is stored in the third material conveying wagons (16), wherein the removed old substructure material is supplied to fourth material conveying wagons which, at the beginning of the working cycle, are represented by the buffer wagon (17) and subsequently by emptied third material conveying wagons (16),

   - the second material conveying wagons (8) are decoupled from the first work unit (1) and coupled to the second work unit (2) as soon as the second material conveying wagons (8) are filled with the old gravel and the third material conveying wagons (16) are filled with the old substructure material and the new unit thus formed is moved to a storage place (19) opposite to the working direction, where the materials from the material conveying wagons (8, 16) are intermediately stored separately from each other and the third material conveying wagons (16) are filled with new substructure material, and

   - the first work unit (1) applies the recycled gravel onto the new layer of substructure (4) in the meantime.
2. The method according to claim 1,
   wherein the second work unit (2) approaches the first work unit (1) again, with the result that the working cycle described above can be restarted.
3. The method according to claim 1 or 2,
   wherein a transfer wagon (9) and a gravel levelling unit (10) are assigned to the assembly (6).
4. The method according to at least one of Claims 1 to 3,
   wherein the assembly (11) comprises a removal assembly (12) for the old substructure material (4), an installation assembly (13) for a non-woven fabric as well as an installation assembly (14) for the new layer of substructure (4), and conveyor belts (15) for transporting the old substructure material off and for feeding the new substructure material.

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