EP2428612B1 - Rail decontamination machine with processing of protection substructure - Google Patents

Description

The invention relates to a Gleiswegsanierungsmaschine, which is designed to excavate old ballast and Altplanumsschutzschicht (PSS) and introduce a new layer protection layer and a new ballast layer. Another aspect of the invention is a trackside remediation method.

Track shunting machines of this type of operation are used to rehabilitate existing tracks. In this renovation, the substructure of the track, which typically consists of at least one layer of gravel, but usually also under the ballast layer lying layer protection layer, which is required for the sufficient carrying capacity, drainage ability and frost resistance of the track. This refurbishment is carried out in such a way that a track-bound track reconditioning machine is routed over the track when the track is in place. The track reconditioning machine rolls on a forwardly arranged chassis on the track and the old substructure and with a rear chassis on the track and the new track track substructure. Between the front and the rear chassis, the rehabilitation of the substructure is carried out in the purpose of this lift devices suspended on a bridge between the front and rear chassis devices the track substructure and bring the new track substructure, compact and the like. The track is usually lifted slightly and remains mounted with the sleepers, but could also be dismantled and mounted in the area between the front and rear bogies such that the sleepers are removed from the track, the track strands are spread and guided past the side of the machine to rejoin them at the rear of the bridge to mount the sleepers and place them on the new track substructure. For certain other trackside remediation machines, the sleepers and / or the track strands may be replaced at the same time.

Track remoulding machines of this type are made, for example DE 198 07 677 C1 or off EP 2 025 810 B1 known. In these Gleiswegsanierungsmaschinen the track substructure is excavated by means of several chains, in particular according to EP 2 025 810 B1 It is intended to improve the efficiency of the track remover machines by the track track substructure is excavated by a total of three excavation chains.

A fundamental problem associated with trackside remediation machines is the limitation on the speed of work that is achieved in track-laying. In order to reduce the downtime of a track track, as fast as possible track reassembly is sought and this can be achieved in particular if the track reassembly can be carried out at a high speed of the track reassembly and as few or no interruptions of the remedial drive. In the past, the problem of transporting the excavated old materials and bringing the newly introduced new materials into circulation has proved to be a limiting factor for this targeted fast track remediation. For the area of the ballast bed, in some cases a treatment technique has proven to be advantageous in which the excavated old ballast is subjected to a treatment in the form of a ballast and thus sharpening of the old ballast. From this gravel preparation at least a portion of the excavated old ballot can be recovered in such catfish, that this can be used as a new ballot and thus the Volumes of the abducted old ballast and the approaching Neuschotters be partially reduced.

Approaches are also known from the state of the art for the area of the anti-fouling layer in order to achieve a reprocessing of the excavated materials in such a way that they can be used in the form of recycling for the new subsoil protective layer. That's how it is DE 20 2005 007 362 a method is known in which the excavated surface protection layer is prepared by solid materials such as clay, gypsum or lime are mixed with this layer and then the mixture created such type is introduced as a new PSS in the track again. Out EP 1 939 355 A1 is a track-laying machine known in which the PSS is also recycled. In this prior art, the problem has been addressed that with the previously known treatment facilities no sufficient load capacity, especially with regard to dynamic loads, is achieved with such recycled layer protection layer and remedy is proposed here to introduce an additional mechanical damping layer.

In principle, it has been shown that with the known methods for track reassembly no protective cover layer with sufficient load-bearing capacity can be realized if in this case the excavated old material of the tarmac protective layer is used in the known manner. The invention thus addresses the problem of providing a device and a method which enables a more efficient track route rehabilitation.

This object is achieved by a Gleiswegsanierungsmaschine according to claim 1.

The invention is based on a detailed analysis of the problem of the treatment of the surface protection layer. From this it has been found that with the methods which are known from the prior art, although in certain cases, a qualitatively sufficient layer protection layer can be achieved by the treatment mechanisms and laying techniques taught there, this However, not guaranteed over the entire length of a track. As a problem that leads to this deficit, it was identified that the quality of the excavated material over the length of a track usually changes significantly. On the one hand, this change may be due to the fact that a level protection layer has been installed at all and in the track track substructure to be rehabilitated, or this is not the case, that is, the ballast bed has been laid on not specially prepared ground. For the purposes of this description and the appended claims, therefore, the term "excavated" old protective cover layer material is to be understood as meaning both a protective cover layer actually introduced into the track substructure and a soil that is not deliberately introduced or rock-penetrated soil material only in its place. The excavated protective layer and possibly in place or together with this excavated soil here can have very different proportions of sandy, loamy and rocky components and have a total according to the geological conditions very wide range of variation in other components such as gypsum, clay, lime and the like. However, these different qualities of the excavated material make it impossible to prepare them in a predetermined manner so that always a satisfactory quality of the prepared, prepared surface protection layer is guaranteed.

The invention starts with this knowledge and ensures by means of a specific, upstream first processing unit, first of all, a homogenization aimed at in a substantial soil quality feature, by supplying the excavated layered protective layer material to a sieving and / or comminution device by mixing with a liquid processing fluid before the actual processing, in order to sift out or crush at least rocky coarse components of the excavated protective layer so far that they do not exert a significant influence on the quality of the new PSS. By means of this measure according to the invention, it is achieved that the quality fluctuations which result from the excavated old PSS are reduced in a relevant aspect for the preparation and, as a result a more homogeneous starting material for the process of the mixture-technical treatment with the addition of a liquid treatment fluid is provided.

According to the invention, the track remoulding machine, which is to be understood here in particular as a track-bound track reconditioning machine, comprises two excavating devices, namely an excavating device for gravel lying in front in the working direction and an excavating device for the old PSS lying behind in the working direction, this second excavating device also being used for excavating in the previously explained manner is formed by existing in place of a PSS soil. In principle, it should be understood that it may be advantageous to also equip the track remover machine according to the invention with three or more excavation chains in order thereby to lift the layers of the track bed to be rehabilitated in a more selective manner and to recycle them in the machine.

Both the excavated ballast layer and the excavated old PSS is conveyed away within the Gleiswegsanierungsmaschine by appropriate conveyors of the excavation and fed to corresponding treatment facilities. The gravel layer can be subjected to a screening and sharpening in order to obtain thereby prepared Neuschotter, it being understood that this accumulating Schotterantelle, for example, a minimum size below, can also be supplied by means of a corresponding conveyor of the processing unit for the PSS to in the new PSS to be installed.

The excavated waste PSS is first fed to a first processing unit in which it can be sieved and / or broken, wherein it is particularly preferred to perform the operations of sieving and breaking successively and to feed only the screened out coarse constituents to the crusher. The small components of the PSS produced in this way can then be supplied to the second processing unit, it being understood that contaminated parts or portions below a certain particle size, which may be sieved out by a sieving process, are also disposed of can be fed to a bunker bulk goods and are not supplied to the second processing unit.

In the second processing unit, the old PSS material prepared in this way is then mixed with a liquid treatment fluid. For this purpose, a mixer is provided, in particular, it may be a two-shaft mixer, which causes both a homogenization of the old PSS material from the first processing unit as well as an intensive mixing of this material with the liquid treatment fluid.

In addition to these components, bunkered virgin materials can also be supplied to the mixer on the track rehabilitation train in order to replace spilled components of the old PSS and to provide the required volume. The anti-fouling layer material conveyed out of the mixer is applied, spread and compacted onto the milled soil sublayer by means of an infeed device to thereby provide a strong, drainable and frost-resistant fouling layer for a trackway that can support both high axle loads and high speeds. The ballast bed is then applied to the new PSS introduced in this way, the track is laid, if appropriate, far after the sleepers have been installed, and the ballast is compacted in order to achieve reliable foundation of the sleepers in the ballast bed.

• eine Siebvorrichtung zum Aussieben grober Bestandteile aus der ausgehobenen Planumsschutzschicht,
• einen Brecher zum Brechen der ausgesiebten groben Bestandteile aus der ausgehobenen Planumsschutzschicht,
• eine Grobteilfördervorrichtung zum Fördern der ausgesiebten groben Bestandteile aus der ausgehobenen Planumsschutzschicht von der Siebvorrichtung zu dem Brecher, und
• eine Feinteilfördervorrichtung zum Fördern der gebrochenen groben Bestandteile von dem Brecher und der gesiebten feinen Anteile von der Siebvorrichtung zu dem Mischer umfasst.

The first PSS processing unit comprises

• a screening device for screening coarse components from the excavated surface protection layer,
• a crusher for crushing the screened coarse matter from the excavated surface protection layer;
• a coarse-part conveying device for conveying the screened coarse components from the excavated debris protection layer from the screening device to the crusher, and
• a fine particle conveying device for conveying the crushed coarse components from the crusher and the screened fine particles from the screening device to the mixer.

As a result, a particularly efficient preparation of the excavated old PSS is achieved by this is first divided into fine and large components in a screening process, the coarse components are then subjected to crushing and the resulting fractions obtained together with the previously screened fines then the other Treatment be supplied. It is to be understood in principle that in the screening process, a division into three or more fractions can be done. Thus, for example, old PSS fractions, which are below a certain particle size, are screened out in such a multi-stage screening process and fed to a landfill because they are not suitable for processing.

• eine Schotter-Aufbereitungseinheit zum Aufbereiten des ausgehobenen Schotters, umfassend einen Schotterbrecher und ein Schottersieb,
• eine Altschotter-Fördervorrichtung zum Fördern des ausgehobenen Schotters von der ersten Aushubvorrichtung zu der Schotter-Aufbereitungseinheit,
• eine Neuschotter-Fördervorrichtung zum Fördern der geschärften Grobbestandteile des aufbereiteten Schotters von der Schotter-Aufbereitungseinheit zu der Schotter-Einbringungsvorrichtung, und
• eine Schotterbruch-Fördervorrichtung zum Fördern der Kleinteile des aufbereiteten Schotters von der Schotter-Aufbereitungseinheit zu dem Mischer.

According to a first preferred embodiment, it is provided that the track remedy according to the invention further comprises:

• a ballast processing unit for processing the excavated ballast, comprising a ballast crusher and a ballast screen,
• an old ballast conveyor for conveying the excavated ballast from the first excavator to the ballast processing unit,
• a new ballast conveying device for conveying the sharpened coarse components of the processed ballast from the ballast processing unit to the ballast injection device, and
• a ballast fracturing conveyor for conveying the small parts of the processed ballast from the ballast processing unit to the mixer.

This training makes it possible to use material components that are no longer suitable for use in the new ballast bed due to their insufficient size for the new PSS, which advantageously ensures that these ballast small parts on the one hand not stored on the Gleiswegsanierungszug and, in addition, volume losses resulting from the PSS treatment can be compensated for by additions from the old ballast, which in turn can reduce or avoid the need to carry new material for the PSS.

• Alt-PSS-Bunkertördermittel zum Fördern von Teilen des ausgehobenen Planumsschutzschichtmaterials von der ersten PSS-Aufbereitungseinheit und/oder der zweiten Aushubeinrichtung zu einem Materialbunkerwagen und/oder
• Neu-PSS-Bunkerfördermittel zum Fördern von PSS-Neumaterial von einem Materialbunkerwagen zu dem Mischer der zweiten PSS-Aufbereitungseinheit.

It is particularly preferred that they continue to be provided

• Old PSS bunker conveyor for conveying parts of the excavated surface protection layer material from the first PSS processing unit and / or the second excavating device to a material bunker wagon and / or
• New PSS bunker conveyor for pumping new PSS material from one material bunker truck to the second PSS conditioning unit mixer.

With such old PSS bunker conveyors, these non-reprocessable components of the old PSS can be removed from the processing path and transported by the track remover machine to a corresponding material bunker wagon which is carried along in the track remount train.

Likewise, virgin material entrained by appropriate new PSS bunker conveyors from the track rehabilitation train, such as sand, clay, gypsum, loam, gravel, or the like, may be supplied to the second PSS conditioning unit for incorporation into the mixer and for the new PSS to compensate for spilled volume fractions from the legacy PSS.

• eine Mischsteuerungseinheit,
• eine erste Anschlussleitung welche einen Fluidspeicher für ein Binderfluid mit der Mischsteuerungseinheit verbindet,
• eine zweite Anschlussleitung welche einen Wasserspeicher mit der Mischsteuerungseinheit verbindet,

wobei die Mischsteuerungseinheit ausgebildet ist, um ein Mischungsverhältnis zwischen dem zugeführten Binderfluid und dem zugeführten Wasser herzustellen und das Binderfluid-Wasser-Gemisch dem Mischer der zweiten PSS-Aufbereitungseinheit zuzuführen.According to a further, particularly preferred embodiment of the track remover according to the invention, it is provided that the delivery line for conveying a liquid treatment fluid from a fluid tank unit to the mixer comprises:

• a mixing control unit,
• a first connection line connecting a fluid reservoir for a binder fluid with the mixing control unit,
• a second connecting line which connects a water reservoir with the mixing control unit,

wherein the mixing control unit is configured to establish a mixing ratio between the supplied binder fluid and the supplied water, and to supply the binder fluid-water mixture to the mixer of the second PSS conditioning unit.

With this training, it is possible that during operation of the track reconditioning machine, the supplied treatment fluid is changed in terms of its composition and thus adapted to qualitatively different compositions of the excavated old PSS. For this purpose, in a mixing control unit, two liquids, on the one hand a binder fluid, which may substantially contain binder components, and on the other water, are combined and mixed with each other in an adjustable ratio. This mixture is then subsequently fed to the mixer where it is mixed with the solid constituents of the waste PSS and optionally supplied bunkered virgin materials. It has been found according to the invention that the proportion of water and its ratio to the binder content of a specific chemical binder liquid other than water has a significant influence on the quality of the processed PSS and this ratio is particularly suitable for adapting the treatment process to different qualities of the excavated PSS. So can In principle, when excavated PSS with high moisture content of the water content that is supplied to the treatment process, be reduced and excavated PSS with high binding qualities, such as loamy soils, the proportion of binder fluid with binder contained in it, on the one hand to prevent the processed PSS is too wet, on the other hand to prevent the prepared PSS is too brittle.

Furthermore, it is preferable for the mixing control unit to be signal-technically coupled to a user input unit for inputting a soil condition feature and to set a predetermined, predetermined mixing ratio between water and binder fluid for this purpose from an electronic memory using a soil condition feature received from the user input unit.

With this development, it is achieved that the mixing control unit is controlled in such a way that, depending on a soil texture feature, the mixing ratio of the two liquids or optionally several liquids is controlled and such type is adapted to the soil condition. As soil texture feature here, for example, the density or the water content or soil type can be used, here with binary criteria such as sandy, loamy, rocky or percentage information of the ingredients can be used. In principle, it should be understood that the user input unit may be located on the track rehabilitation machine itself, for example, as a switch or lever that may be moved between two or more positions to thereby characterize and input the nature of the ground. In other embodiments, the user input unit may also be separated from the track remover, for example in the form of a computer unit which prepares a longitudinal profile of the ground conditions along the entire track track to be rehabilitated based on data characterizing the ground conditions over the length of the track path, data corresponding thereto generated, which may be used for the mixing control unit as input data to then pass this data to the mixing control unit. In this case, the mixing control unit can correspond with this data a further determined geographical position of Gleiswegsanierungsmaschine, for example by GPS sensors or a track distance measurement of the length covered, resort to these data and set the corresponding mixing ratio with spatial resolution.

It is even further preferred that the mixing control unit is signal-coupled to a soil condition sensor for detecting a soil condition feature, in particular with a soil condition sensor arranged and configured to detect the soil condition of the PSS material leaving the first PSS conditioning unit and from this To receive the floor texture feature received from the soil condition sensor from an electronic memory, a suitable, predetermined mixing ratio between water and binder fluid suitable for this purpose.

Such a soil condition sensor can be designed to provide a continuous measurement, which thus continuously records the soil quality, a quasi-continuous measurement, which thus records the soil quality at discrete, regularly successive times, or random sampling, which therefore only occasionally caused the user Performs a recording of soil quality performs time points. In this case, in particular a sensor can be used, which detects the density of the soil, the moisture content of the soil or other parameters, such as a viscosity, bulk density or the like. In principle, the soil condition sensor can be designed and arranged to detect the ground condition before the old PSS is released, that is to say in a region of the track rehabilitation machine lying in the working direction in front of the second excavating device. Alternatively or additionally, however, the soil condition sensor may also detect the nature of the excavated bulk PSS material within the track remediation machine after passing through the first or second conditioning unit, and additionally or alternatively, a soil condition sensor may also detect the nature of the bottom of the newly loaded PSS before or after record their compression. Each of these sensor data allows a conclusion on the quality of the treatment process and can be used as a control input to regulate the mixing ratio of the starting materials of this treatment.

• mit einer Benutzereingabeeinheit zur Eingabe eines oder einem Bodenbeschaffenheitssensor zur Erfassung eines Bodenbeschaffenheitsmerkmals signaltechnisch gekoppelt ist, und
• ausgebildet ist, um anhand dieses empfangenen Bodenbeschaffenheitsmerkmals aus einem elektronischen Speicher ein hierzu geeignetes, vorbestimmtes Mischungsverhältnis zwischen dem dem Mischer zugeführten Flüssigbestandteil einerseits, bestehend aus Wasser und Aufbereitungsfluid und dem Festbestandteil andererseits, bestehend aus Planumsschutzschicht aus der ersten PSS-Aufbereitungseinheit und ggfs. zugeförderten PSS-Neumaterial, einzustellen.

According to a further preferred embodiment, it is provided that the mixing control unit

• is signal technically coupled to a user input unit for inputting a ground condition sensor for detecting a soil condition feature, and
• is formed, on the basis of this received soil quality feature from an electronic memory a suitable, predetermined mixing ratio between the liquid component supplied to the mixer on the one hand, consisting of water and treatment fluid and the solid component on the other hand, consisting of layer protection layer from the first PSS processing unit and possibly. Promoted PSS -Neumaterial, adjust.

According to this embodiment, not only the ratio of two or more different liquids introduced into the mixer with each other is controlled in the mixing control unit, but also the ratio of the conveyed liquid material to the conveyed solids, that is, the amount of introduced into the mixer liquids and the amount of solids incorporated in the mixers, especially the old PSS and any added bunkered virgin materials. This ratio may be controlled by volume or weight, and it is to be understood that in addition to this ratio of liquid and solid, a mixing ratio of the constituent components of the liquid portion and the constituent portions of the solids portion may be controlled to thereby adjust the conditioning operation in the second conditioning unit to optimally achieve the quality and condition of the excavated waste PSS material.

In this case, it is particularly preferred if the track remover is further developed by a mixing control unit, which is designed to set a mixing ratio between two or more different liquid components fed to the mixer and / or between a liquid and solid component fed to the mixer. With such a mixing control unit, a particularly good adaptability of the treatment process to different excavated soil types is achieved.

• einem Bodenradar zur Erfassung eines Bodenbeschaffenheitsmerkmals der PSS-Schicht in Arbeitsrichtung vor der zweiten Aushubeinrichtung,
• einem Gewichts-/oder Dichtesensor zur Erfassung des Gewichts oder der Dichte des ausgehobenen Planumsschutzschichtmaterials vor dem Durchlaufen der ersten oder zweiten Aufbereitungseinheit,
• einem Feuchtigkeitssensor zur Erfassung der Feuchtigkeit der ausgehobenen Planumsschutzschicht vor dem Durchlaufen der ersten oder zweiten Aufbereitungseinheit verbunden ist.

According to a further preferred embodiment, it is provided that the mixing control unit can be signaled with

• a ground radar for detecting a soil condition feature of the PSS layer in the working direction in front of the second excavating device,
• a weight or density sensor for detecting the weight or density of the excavated demister protective layer material prior to passing through the first or second conditioning unit,
• a moisture sensor for detecting the moisture of the excavated debris layer before passing through the first or second conditioning unit is connected.

With this embodiment, particularly preferred and meaningful features of the starting material are detected, which are crucial for the preparation of a high-quality new PSS and at the same time are detectable in a reliable manner sensor technology .. It is understood that one or more of these soil characteristics features can be used to control the mixing ratios in the conditioning process.

• Einem Bodenradar zur Erfassung eines Bodenbeschaffenheitsmerkmals der PSS-Schicht in Arbeitsrichtung hinter der PSS-Einbringvorrichtung,
• Einem Sensor zur Erfassung des Feuchtigkeitsgehaltes der PSS-Schicht in Arbeitsrichtung hinter der PSS-Einbringvorrichtung
• Einem Feuchtigkeitssensor zur Erfassung der Feuchtigkeit der ausgehobenen Planumsschutzschicht und/oder
• Einem Schwingungssensor, der an einem Verdichter zur Verdichtung der eingebrachten Neu-PSS angeordnet ist,

verbunden ist und auf Grundlage eines oder mehrere dieser Signale ein Mischungsverhältnis zwischen zwei oder mehr dem Mischer zugeführten unterschiedlichen Flüssigbestandteilen und/oder zwischen einem dem Mischer zugeführten Flüssig- und Festbestandteil einzustellen.Still further, it is preferably provided that the mixing control unit with signaling technology

• A ground radar for detecting a soil condition feature of the PSS layer in the working direction behind the PSS insertion device,
• A sensor for detecting the moisture content of the PSS layer in the working direction behind the PSS insertion device
• A moisture sensor for detecting the moisture of the excavated surface protection layer and / or
• A vibration sensor disposed on a compressor for compressing the introduced new PSS,

is connected and based on one or more of these signals, a mixing ratio between two or more mixer supplied to the different liquid components and / or adjusted between a liquid and solid component supplied to the mixer.

With this training, as an alternative or in addition to the above-described detection of soil properties of the old PSS in the built or bulk state within the Gleiswegsanierungsmaschine the soil condition of the new PSS, so the prepared PSS recorded. This can take place by detecting soil properties of the new PSS layer material still inside the track rehabilitation machine, ie in particular between the second conditioning unit and the PSS introduction device. This can also be done by measurements on the introduced new PSS layer in the track bed itself, in particular before or after the compression of this layer. This training makes it possible to control the control of the mixing ratio on the basis of the actually achieved quality of the new PSS and thus to use a quality final control as an input signal for this mixing control.

Finally, according to a further preferred embodiment, it is provided that the first excavating device, the second excavating device, the PSS introduction device, and the ballast loading device is attached to a bridge that extends between a front chassis and a rear chassis. With this embodiment, a preferred track-based trackside remediation machine is provided that allows track-to-track remediation with respect to a ballast bed and PSS to be completed and completed between a front and rear chassis, thus achieving a continuous track rehabilitation process.

Another aspect of the invention is a track rehabilitation method according to claim 11.

With the Gleiswegsanierungsverfahren invention efficient and material-friendly track reassembly is made possible by reuse of the excavated material to a large or complete extent with different types of soil and in particular over the length of the track to be rehabilitated track types and soil compositions. This reuse is achieved through a differentiated and targeted treatment of the excavated material and a homogenization of the basic characteristics of the recycled soil fractions which are decisive for the viability of the new PSS.

The method according to the invention can be further developed according to claim 12. With regard to this method development, reference is made to the above description of the track remover machine designed for carrying out this method, with regard to the specific definitions of terms, the preferred embodiments and functions as well as advantages.

Figur 1

einen vorderen Abschnitt einer erfindungsgemäßen Gleiswegsanierungsmaschine in einer schematischen, die relevanten Funktionselemente zeigenden Seitenansicht,

Figur 2

einen an den vorderen Abschnitt gemäß Figur 1 anschließenden vorderen Mittelabschnitt in einer gleichen Darstellungsweise wie Figur 1,

Figur 3

einen an den vorderen Mittelabschnitt gemäß Figur 2 anschließenden hinteren Mittelabschnitt in einer Darstellungsweise gemäß Figur 1, und

Figur 4

einen an den hinteren Mittelabschnitt gemäß Figur 3 anschließenden hinteren Abschnitt in einer Darstellungsweise gemäß Figur 1.

A preferred embodiment of the device according to the invention will be described with reference to the accompanying figures. Show it:

FIG. 1

a front portion of a Gleiswegsanierungsmaschine invention in a schematic, showing the relevant functional elements side view,

FIG. 2

one at the front section according to FIG. 1 adjoining front middle section in the same way as FIG. 1 .

FIG. 3

one to the front middle section according to FIG. 2 subsequent rear middle section in a representation according to FIG. 1 , and

FIG. 4

one at the rear middle section according to FIG. 3 subsequent rear section in a manner of representation according to FIG. 1 ,

The track reconditioning machine shown in the figures comprises a gravel excavating chain 10, which is attached to a bridge (not shown) mounted on a front and rear chassis and extending between these carriages and projects downwardly into the track bed to be rehabilitated so far that with this ballast excavating chain old ballast bed can be dug. The excavated gravel bed is conveyed by means of a ballast conveyor belt 11 to a screening device 12 and divided there into coarse and fine components. The fines are further conveyed from the screening device 12 by means of another ballast fine part conveying device 13 and can be conveyed to a Bunkerschüttgutwagen for intermediate storage on the Gleiswegsanierungszug. From this, constituents or also the complete portion of the fines can be conveyed via a ballast fine particle feed device 14 for preparation, this will be referred to for further description.

The coarse constituents that emerge from the screening device 12 are fed via a ballast bulk part conveying device 15 to a crusher 20 and sharpened there by refraction into smaller fractions. These fractions of this kind are fed to a further screening device 22 via a conveyor 21 and screened by the refraction resulting fines. These fines fall on the conveyor 13 and can be supplied to the intermediate storage or further processing in the previously explained manner via the conveyor 13 or 14. The sharpened ballast portions above a predetermined minimum size are fed from the screening device 22 to a bulkhead infeeder 30 via a ballast conveyor 23 for processed ballast.

In the working direction behind the gravel excavation chain 10, a PSS excavation chain 40 is arranged. This PSS excavation chain 40 is also attached to the bridge and protrudes deeper into the track bed to be rehabilitated as the Schotteraushubkette 10. With this PSS excavation chain a PSS is excavated from the track bed to be rehabilitated, if such a PSS is present, otherwise under the already excavated gravel layer located soil excavated to a certain depth.

Attached to the PSS excavation chain 40 is a leveling unit 41 which levels and consolidates the soil subsurface exposed by the excavation of the PSS, which forms the foundation for the new PSS.

The excavated by the PSS excavation soil material is fed via a legacy PSS conveyor belt 42 a screening device 51, which is part of a first processing unit. Fine material screened out in the sifter 51 is fed to a mixer 60 by means of a fine particle PSS conveyor belt 52. The PSS coarse material screened out in the screening device 51 is fed by means of a conveyor belt to a crusher 54, which is also part of the first processing unit. The crushed PSS coarse material in the crusher is also supplied to the PSS Feinteilförderband 52 and supplied to the mixing device 60 therewith.

Optionally, the excavated old PSS material can be completely removed by means of a conveyor 43 and spent to a entrained Bunkerschüttgutwagen.

As can further be seen, the conveyor 14 empties for on the old ballast or the crushed old ballast sifted fines on the conveyor belt 52 and thus enables a supply of this ballast fines in the mixer for the production of the new PSS material.

From Bunkerschüttgutwagen arranged in the rear train part new material is further promoted to the PSS Feinteilförderband 52 by means of a Neumaterialfördereinrichtung 55.

The two-shaft mixer 60 is further supplied via a liquid supply line 71, a treatment fluid. This conditioning fluid is mixed in a mixing control unit 70 of two components.

The mixing control unit 70 is supplied via a water supply line 72 water from a carried in the Gleiswegsanierungszug tanker 80 and fed via two treatment binder fluid conduits 73 a, b two components of a treatment binder from a likewise entrained second two containers 81 a, b tanker comprehensive. From these three starting liquids, the mixing control unit 70 mixes a treatment fluid which has a correspondingly variable mixing ratio of these three starting materials and supplies this conditioning fluid via the supply line 71 to the mixer 60.

At the same time, the mixing control unit 70 meters the volume flow and thus the total amount per unit time of the treatment fluid, which is supplied through the supply line 71 to the mixer 60 and thereby controls the ratio of the mass of the supplied treatment fluid and the conveyor 52 via the mixer 60th supplied solids. For this purpose, the mixing control unit is connected to a combined sensor unit 90 for detecting the conveying speed and the loading weight, which detects what mass of conveying material from the screening device 51 and the crusher 54 is supplied to the mixer 60 per unit time.

The mixer 60 is designed and homogenized as a two-shaft mixer and mixes the liquids and solids supplied to each other. From the twin-shaft mixer 60, the type of treated new PSS material exits onto a PSS introduction device 100 and is applied by this introduction device to the previously leveled foundation plane. At the new PSS introduction device 100 compression and leveling devices 101 are arranged, with which the PSS is compacted after introduction.

The mixing control unit 70 is further signaled by a humidity and density sensor 91, which detects the moisture content and the density of the conditioned old PSS material fed to the mixer 60 on the conveyor belt 52 shortly before entering the mixer 60. Furthermore, the mixing control unit 70 is signal-coupled with a load-bearing sensor 92, which detects the load capacity by a quasi-continuous hardness measurement of the introduced and planed new PSS. From the signal-wise transmitted information about the carrying capacity of the new PSS, the moisture content and the density of the supplied recycled old PSS material and the amount per unit time of the supplied old PSS material determines the mixing control unit based on data stored therein in advance an optimal Mixing ratio between the supplied liquids from the water tank 80 and the treatment binder fluid tank 81 and the mixing ratio between the treatment fluid and the solids in the mixer to achieve optimum quality of the new PSS.

The construction of the new track bed concludes with the introduction of the processed ballast through a Schottereinbringvorrichtung 30. It should be understood that following this, the track itself is optionally anchored by sleeper assembly and corresponding Einbringvorgänge in this ballast bed, the ballast is still compacted in a suitable manner and possibly alignment measures done to achieve an ideal track position on the new track bed.

Basically, it should be understood that new material can be additionally supplied both in terms of the new ballast bed to be introduced and in terms of the new PSS material to be introduced, which is entrained in corresponding bunker bulk goods wagons in the track rescue train and fed to the track remover by appropriate conveyor belts. This material is preferably supplied in such a way that it can be recorded with regard to the preparation of the new PSS and the related sensor-technical detection of the properties of the delivered material and thus taken into account in the mixing ratios.

Claims (12)

1. Rail decontamination machine, comprising

   - a first excavation device (10) for excavating the ballast of the existing ballast layer,

   - a second excavation device (40) for excavating an existing formation protection layer below the existing ballast layer,

   - a first FPL conditioning unit for screening and/or crushing coarse constituents of the excavated formation protection layer,

   - a first old FPL conveying device (42) for conveying the excavated formation protection layer from the second excavation device (40) to the first FPL conditioning unit,

   - a second FPL conditioning unit (60) for conditioning the excavated formation protection layer, which comprises a mixing device for mixing the excavated formation protection layer with a liquid conditioning fluid,

   - a second old FPL conveying device (52) for conveying the partially conditioned formation protection layer from the first FPL conditioning unit to the second FPL conditioning unit,

   - a conveying line (71) for conveying a liquid conditioning fluid from a fluid tank unit to the mixing device,

   - an FPL introduction device (100) for introducing the new formation protection layer,

   - a ballast introduction device (30) for introducing a new ballast layer onto the intermediate layer,

   - wherein the FPL conditioning unit comprises a screening device (51) for screening out coarse constituents from the excavated formation protection layer,

   characterised in that the FPL conditioning unit comprises

   - a crusher (54) for crushing the screened-out coarse constituents of the excavated formation protection layer,

   - a coarse particle conveying device for conveying the screened-out coarse constituents of the excavated formation protection layer from the screening device to the crusher, and

   - a fine particle conveying device (52) for conveying the crushed coarse constituents from the crusher and the screened fine fractions from the screening device to the mixer,

   wherein the conveying line for conveying a liquid reconditioning fluid from a fluid tank unit to the mixing device comprises:

   - a mixing control unit (70),

   - a first connecting line (73 a, b) which connects a fluid reservoir (81) for a conditioning binder fluid to the mixing control unit,

   - a second connecting line (72) which connects a water reservoir (80) to the mixing control unit,

   wherein the mixing control unit (70) is designed to establish a mixing ratio between the supplied conditioning binder fluid and the supplied water and to feed the conditioning binder fluid/water mixture to the mixer of the second FPL conditioning unit.
2. Rail decontamination machine according to claim 1, characterised by

   - a ballast conditioning unit for conditioning the excavated ballast, comprising a ballast crusher (20) and a ballast screen (12),

   - an old ballast conveying device (11) for conveying the excavated ballast from the first excavation device (10) to the ballast conditioning unit (12, 20),

   - a new ballast conveying device (23) for conveying the ground coarse constituents of the conditioned ballast from the ballast conditioning unit to the ballast introduction device (30), and

   - a ballast fraction conveying device (13, 14) for conveying the small particles of the conditioned ballast from the ballast conditioning unit to the mixer.
3. Rail decontamination machine according to any of the preceding claims,
   characterised by

   - old FPL hopper conveying means for conveying portions of the excavated formation protection layer material from the first FPL conditioning unit and/or the second excavation device to a material hopper car and/or

   - new FPL hopper conveying means for conveying new FPL material from a material hopper car to the mixer of the second FPL conditioning unit.
4. Rail decontamination machine according to any of the preceding claims,
   characterised in that the mixing control unit (70) is coupled in signal terms to a user input unit for inputting a ground condition characteristic and is designed to set, from an electronic memory, a suitable, predetermined mixing ratio between water and conditioning fluid on the basis of a ground condition characteristic received from the user input unit.
5. Rail decontamination machine according to any of the preceding claims,
   characterised in that the mixing control unit is coupled in signal terms to a ground condition sensor (91, 92) for detecting a ground condition characteristic, in particular to a ground condition sensor (91) which is arranged and designed to detect the ground condition of the FPL material coming from the first FPL conditioning unit and to set, from an electronic memory, a suitable, predetermined mixing ratio between water and conditioning fluid on the basis of this ground condition characteristic received from the ground condition sensor.
6. Rail decontamination machine according to any of the preceding claims,
   characterised in that the mixing control unit (70)

   - is coupled in signal terms to a user input unit for inputting, or to a ground condition sensor (90, 91) for detecting, a ground condition characteristic, and

   - is designed to set on the basis of this received ground condition characteristic, from an electronic memory, a suitable, predetermined mixing ratio between the liquid component fed to the mixer on the one hand, consisting of water and conditioning fluid, and the solid component on the other hand, consisting of formation protection layer from the first FPL conditioning unit and, where necessary, supplied new FPL material.
7. Rail decontamination machine according to any of the preceding claims,
   characterised by a mixing control unit (70) which is designed to set a mixing ratio between two or more different liquid components (80, 81) fed to the mixer and/or between a liquid and solid component fed to the mixer.
8. Rail decontamination machine according to any of the preceding claims,
   characterised in that the mixing control unit (70) is connected in signal terms to

   - a ground radar for detecting a ground condition characteristic of the FPL layer in the working direction in front of the second excavation device,

   - a weight or density sensor (90, 91) for detecting the weight or density of the excavated formation protection layer material before the latter passes through the first or second conditioning unit,

   - a moisture sensor (91) for detecting the moisture content of the excavated formation protection layer before the latter passes through the first or second conditioning unit.
9. Rail decontamination machine according to any of the preceding claims,
   characterised in that the mixing control unit is connected in signal terms to

   - a ground radar for detecting a ground condition characteristic of the FPL layer in the working direction behind the FPL introduction device,

   - a sensor (92) for detecting the moisture content of the FPL layer in the working direction behind the FPL introduction device and/or

   - a vibration sensor (101) which is arranged on a compactor for compacting the introduced new FPL,

   and is designed to set, on the basis of one or more of these signals, a mixing ratio between two or more different liquid components fed to the mixer and/or between a liquid and solid component fed to the mixer.
10. Rail decontamination machine according to any of the preceding claims,
    characterised in that the first excavation device (10), the second excavation device (40), the FPL introduction device (100) and the ballast introduction device (30) are fastened to a bridge which extends between a front undercarriage and a rear undercarriage.
11. Method for rail decontamination, comprising the steps

    - excavating the old ballast of the existing ballast layer,

    - excavating an existing old formation protection layer,

    - conditioning the excavated old formation protection layer material by adding a liquid conditioning mixture in a mixer to form a conditioned formation protection layer material,

    - introducing the conditioned formation protection layer material as a new formation protection layer, and

    - introducing a new ballast layer onto the intermediate layer,

    characterised in that the old formation protection layer, prior to being conditioned in the mixer, is conditioned by screening and crushing in that

    - coarse constituents are screened out from the excavated formation protection layer in a screening device,

    - the screened-out coarse constituents are crushed in a crusher,

    - the crushed coarse constituents are conveyed from the crusher and the screened fine fractions are conveyed from the screening device to the mixer,

    wherein

    - the liquid conditioning mixture comprises a liquid binder and water and the mixing ratio between the liquid binder and the water is set by means of a mixing control unit, and/or

    - the mixing ratio between the liquid conditioning mixture and the old formation protection layer material introduced into the mixer is set by means of a mixing control unit.
12. Method according to claim 11, characterised in that

    - the ground condition of the old formation protection layer is detected prior to or after excavation and/or the ground condition of the new formation protection layer is detected prior to or after introduction, the detection taking place in each case by means of sensor(s), in particular by a continuous ground radar measurement, moisture measurement or density measurement, and

    - the mixing ratio between the liquid conditioning mixture and the excavated old formation protection layer material introduced into the mixer is set by means of a mixing control unit as a function of the ground condition thus measured.

Images