EP2213792B1 - Method for laying U-shaped channel elements beside the track of a rail section - Google Patents

Description

The invention relates to a method for laying U-shaped channel elements next to the track of a railway line according to the preamble of claim 1.

In addition to the tracks of railway lines is often a laying of cables necessary. These serve to electrify the track. Because of these cable lines turnouts, railroad crossings, signaling equipment or other devices of any kind are electrically operated.

To lay the cables are U-shaped channel elements in which the cable should run. As a rule, the U-shaped channel elements to be laid are installed as standardized sizes. They are available in the materials concrete or plastic. Usually they have a length of 0.5 to 1.0 m. The installation of these U-shaped channel elements takes place at a distance to be determined laterally of the track. The U-shaped channel elements are buried in the ground so that their upper edge is preferably flush with the soil or something protrudes from the ground.

For laying the U-shaped channel elements, a trench is first dug. Serve known excavation equipment such as excavators or the like., Which accomplish the excavation. After excavation, a split-sand mixture or einkornbeton is first installed before the insertion of the U-shaped channel elements. This is usually done with a thickness of 5 to 10 cm. Then, in a further operation, the U-shaped channel elements are moved to the installation location and installed on the previously installed pad. Finally, the soil is re-installed in a further operation laterally on the U-shaped channel and planed and compacted.

It is thus a plurality of individual steps required to lay the U-shaped channel elements. This means that the laying of the U-shaped channel elements takes place cyclically and is therefore correspondingly slow.

EP 1 964 973 A2 discloses a method for fully or partially automatic laying of U-shaped channel elements next to the track of a railway line in which a trench is first excavated from the ground, then abandoned on the bottom of the trench split or the like, and finally the U-shaped channel elements be used in the trench, wherein at least one movable on the track work trolley is used, which seen in the direction of succession a digging device for the trench, a Splitaufgabeeinrichtung and a Kanalelementeeinsetzeinrichtung and which is continuously moved forward during the work.

On this basis, the invention is therefore an object of the invention to provide a maximum automated method for laying U-shaped channel elements next to the track of a railway line for the subsequent laying of cables with a much higher performance compared to the previous installation methods, with all current U shaped channel elements can be laid equally.

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

As a result, a method for fully or partially automated laying of U-shaped channel elements next to the track of a railway line for the subsequent laying of cables created whose performance is much higher than the previous installation methods. The basic idea of the method according to the invention lies in a channel laying machine consisting of one or more work cars, which move forward continuously and perform all the work for laying the U-shaped channel elements fully or partially automatically. Through this continuous operation, the work performance is significantly increased compared to the known cyclic working techniques. The basic idea lies in a rail-bound, independent machine, which has special work cars for special work sections. So first the excavation is carried out, then the split or the like is installed and finally the U-shaped channel elements are inserted into the trench. In this case, the excavated material is milled by the excavating device, wherein a milling device with an endlessly circulating belt or chain with milling elements arranged thereon is used for milling. The width of the milling device corresponds to the width of the trench to be excavated, so that the excavation of the U-shaped trench is carried out so accurately and continuously that no separate backfilling is required. Furthermore, the excavating device, which is arranged replaceably on the work car, at a transversely to the direction of movement of the work carriage arranged telescopic boom, wherein the telescopic boom and / or the excavating device is arranged vertically adjustable on the telescopic boom. In addition, the excavating device is associated with a position measuring device for determining position with respect to the track, wherein the positioning of the excavating device, in particular the milling device is automatically automatically adjusted in terms of height and lateral position and in terms of inclination, the automatic tilt regulation of the milling device depending on the depth and width of the excavated Grabens can be done. This means a maximum of automatic execution of all work steps. The machine is designed so that all standard standardized U-shaped channel elements can be installed. However, it is also conceivable in principle that special forms of U-shaped channel elements can be installed with larger individual lengths.

The method thus comprises the use of a corresponding trench lifting device in a track-guided, continuous method for digging a trench of a railway line parallel to a track. By using a milling device, the width of the trench corresponds exactly to the channel to be excavated. This excavation of the trench is carried out continuously during the course of the machine activity. The advantage is a continuous operation with associated high power rates in a single operation. The excavation takes place by means of a corresponding excavating both in layers of earth and optionally in rock layers, depending on the needs and requirements of local conditions. Thus, a continuous execution of all steps in a single pass and even at long distances to the track outside the track area is guaranteed. The technical realization thus provides that it is a continuous excavation of the trench.

According to the invention, therefore, the excavated material is milled by the excavating device. It is thus a track-guided or track-bound trencher. The milling has the advantage that this ensures a continuous flow of work in the sense of continuous forward movement of the work car.

The technical realization of the trencher provides that the milling device used is an endlessly circulating belt or an endlessly circulating chain or the like, which is equipped with milling elements. The advantage of such a milling device is that a continuous excavation up to great depths of several meters and with large lateral distances to the track of several meters is possible. In this case, the milling device is preferably replaceable. By different width milling devices can thus be excavated in a simple way different width trenches.

The width of the milling device corresponds to the width of the trench to be excavated. This means that in a single operation with a single forward drive of the milling device of the trench according to the required dimensions can be excavated.

The fact that the excavating device is arranged on a telescoping boom which can be telescoped transversely to the direction of movement of the work cart has the advantage. that with this cantilever boom, at the end of the excavating device, in particular the milling device is located, large distances between the track and the digging trench can be bridged, and indeed distances of several meters. The milling device can be pivotable in order to avoid obstacles in the form of masts, for example. The stable guidance of the excavating device is achieved by the compact design of the work cart with the corresponding structure for the excavating device. The weight of the unit described above serves to counteract the overturning moment of the projecting excavating device. The weight can also optionally be chosen variable, for example, by the work car is equipped with additional weights. Thus, a continuous execution of all operations in one pass is guaranteed even at a long time distance to the track.

The height-adjustable arrangement of the telescopic boom and / or the excavating device on the telescopic boom has the advantage that in a technically simple way very large depths of several meters can be excavated. In addition, a possibility for avoiding obstacles is created. Thus, the telescopic arms can hold the milling device in its required position in terms of height and direction and in terms of inclination by a corresponding pivoting movement.

The interchangeability of the excavating device on the work car has the advantage that corresponding excavation devices can be used in accordance with the variable construction site requirement profiles. The interchangeability but also has the advantage that tools other than excavation equipment can be grown as an optional additional solution, such as drills or compactors or other tools of any kind.

The position measuring device associated with the excavating device for determining the position relative to the track has the advantage that the positioning of the milling device is automatically regulated with regard to height and lateral position as well as inclination, without the trench dimensions being measured manually Need to become. Thus, the automatic inclination regulation of the milling device can take place, for example, via laser control as a function of the depth and width of the trench to be excavated. Thus, the entire device can control the work processes semi-automatic or fully automatic, in particular by means of a laser control.

The basic idea of the development according to claim 2 lies in the fact that the work car drives continuously on the track and that on this work car a corresponding excavating device is arranged, which synchronously digs out the trench during the forward movement of the work carriage and the excavated material immediately before the work car or a forward or downstream other work car or a work car on a parallel track feeding. Thus, a rail-mounted excavator in the form of a separate, heavy machine on the work car created which ensures a continuous excavation in particular by means of a router in great depths of several meters and with long distances to the track axis of several meters. The excavated material is loaded directly after the excavation in a continuous operation for disposal. The excavated material can be transported by means of a conveyor belt to conventional upstream or downstream or located on a neighboring track railway cars.

The feeding of the excavated material to the work cart can be carried out according to the embodiment in claim 3 by means of a conveyor belt. Thus, the track-bound or track-guided excavating device, in particular in the form of a trench cutter, is combined with a conveyor belt technology in such a way that direct discharge of the excavated material takes place on a connected conveyor belt in a continuous operation, wherein preferably the conveyor belt is pivotable about a vertical axis. In this way, the excavated material can be loaded both on railway wagon head or even on a neighboring track vehicle or a road truck.

The development according to claim 4 provides a bunker for the split material. The trolleys deliver the conveying material from the bunker trolley to conveyor belts. If required, several bunker cars can be coupled in series in order to be able to transport enough split material.

A preferred development proposes claim 5 to the effect that after the excavation of the trench, the lateral soil of the trench is supported by lateral support boards. These support boards are preferably made of sheet metal or steel. For this purpose, the support means is preferably arranged on a telescopically projecting arm, which can position the support boards exactly in the excavated channel. An essential Aspect is that these side support boards are carried synchronously with the forward drive of the work car. This means that immediately after digging the trench, the support boards come into action and protect the trench from collapsing laterally. These support boards thus define a so-called ongoing shoring. The lateral support boards can be defined by a U-shaped profile. The floor (or ceiling) thus forms the rigid structural connection between the two lateral support boards. This floor or the ceiling does not need to extend over the entire length of this support means. It is sufficient that the soil is formed only over a partial length. Where there is no ground, then, for example, the split can be introduced. Are then the two lateral support boards still connected to each other by a horizontal, web-like scraper, the introduced split can be smoothed and possibly compacted.

The development according to claim 6 proposes the previously mentioned variant in that the split of the bottom of the trench is smoothed by a scraper and optionally compacted. This means that the bottom of the split or the like is first abandoned, the entrained scraper deducting the split and precompressed if necessary. This thus represents a possibility to feed the excavated trench the soil split without much effort. It is only necessary that from a corresponding storage container of the work cart the stockpiled there split, for example, by means of a conveyor belt is fed to the trench.

As already stated above, the scraper according to the embodiment in claim 7 is preferably formed on the support boards of the current Verbaus for supporting the lateral soil. This represents a technically simple measure on the one hand for supporting the lateral soil and on the other hand for stripping the discontinued split.

A further development proposes according to claim 8, the storage of the U-shaped channel elements on the work car. In this case, the stored U-shaped channel elements can be supplied to the trench by means of a corresponding feed device. As a feeder, for example, serve a conveyor belt, which extends laterally next to the work car obliquely in the direction trench. As a result, the U-shaped channel elements are supplied to a certain extent obliquely from behind the trench. The corresponding installation device of the U-shaped channel elements can additionally serve as a running shoring for the lateral support of the soil. But it is also conceivable in principle that the mounting device with the side boards described above are immediately after the excavation combined with each other, so that already there the installation of the U-shaped Channel elements takes place after the soil split has previously been abandoned in the area of these side boards. As a result, an upper carriage may be less necessary in the optimal case. However, the functions and principles of the two units described above remain the same. They are only united in a facility in the ditch area. In principle, a special transport vehicle can be provided for the U-shaped channel elements. Here the factory-palletized or specially nachpalettierten from the factory U-shaped channel elements can be transported by means of a gantry crane to a depositing trolley. This Ablegewagen is thus equipped with the above-described feeder. The gantry crane moves here on its rail wheels on flank rails of train carriages coupled in series. The gantry crane is equipped with a pallet fork or other lifting device, which are capable of transporting the palletized, U-shaped channel elements. The Ablegewagen takes from the pallets a fractional unit of U-shaped channel elements and places them on a cross conveyor belt. The cross conveyor transports the U-shaped channel elements to a transfer conveyor. Since the U-shaped channel elements store on standard pallets, after emptying this palette, a quick clearing must be possible. For this purpose, an additional cross conveyor the pallet can be driven immediately after emptying from the storage area for the new, filled pallet. This ensures that a continuous work progress is guaranteed. To ensure a continuous supply of U-shaped channel elements, several trolleys for the U-shaped channel elements without Ablegewagen can be strung additionally. A gantry crane moves from one wagon to another to transport the pallets. He can transport both the old pallets and the new pallets to the intended workstation.

The development according to claim 9 proposes that the machine can independently perform all surveying relevant activities via a corresponding position control, in particular laser control. This concerns the distance to the track, the height of the U-shaped channel elements and the lateral position of the channel, as well as the displacement of the channel during the operation, namely the warping during the forward movement.

Finally, the development proposes according to claim 10, that after the installation of the U-shaped channel elements, the lateral soil is recompressed and / or smoothed. This can be done by means of a flank compressor, which densifies and smoothes the soil material located laterally next to the channel.

A device for fully or partially automated laying of U-shaped channel elements next to the track of a railway line according to one of the claims of the invention is provided and suitable, has the features of claim 11. This device has at least one movable on the track work car, which seen in the direction of succession a digging device for digging a trench from the ground, a split loader for applying split or the like. On the bottom of the trench and a Kanalelementeeinsetzeinrichtung for inserting the U-shaped Has channel elements in the trench. This or these work cars can / can be moved forward while working continuously. The excavating device is a milling device with an endlessly circulating belt or chain with milling elements arranged thereon, which is arranged on a telescopic arm which can be telescoped transversely to the direction of movement of the working carriage. In this case, the telescopic boom and / or the excavating device is arranged vertically adjustable on the telescopic boom. Furthermore, the excavating device is interchangeably arranged on the work car and the excavating device associated with a position measuring device for determining position with respect to the track, the device having a control for automatically regulating the positioning of the excavating device, in particular the milling device in terms of height and lateral position and in terms of inclination, wherein the automatic tilt regulation the milling device can be made depending on the depth and width of the trench to be excavated.

Fig. 1

eine Einzelansicht der Vorrichtung zum Ausheben eines Grabens;

Fig. 2

einen Schnitt entlang der Linie A-A in Fig. 1;

Fig. 3

eine Seitenansicht zunächst mit der in Fig. 1 und 2 beschriebenen Aushubeinrichtung, anschließend einer Zuführeinheit von Split in den Graben sowie schließlich einer Einheit zum Zuführen von U-förmigen Kanalelementen;

Fig. 4a

einen Schnitt entlang der Linie B-B in Fig. 3;

Fig. 4b

einen Schnitt entlang der Linie C-C in Fig. 3;

Fig. 5

eine Seitenansicht des Wagens zur Bevorratung der U-förmigen Kanalelemente;

Fig. 6a

einen Schnitt entlang der Linie D-D in Fig. 5;

Fig. 6b

einen Schnitt entlang der Linie E-E in Fig. 5;

Fig. 7

eine Ansicht der Zuführung der U-förmigen Kanalelemente zu dem Graben.

An embodiment of an apparatus for the method according to the invention for laying U-shaped channel elements next to the track of a railway line for the subsequent laying of cables is described below with reference to the drawings. In these shows:

Fig. 1

a single view of the device for digging a trench;

Fig. 2

a section along the line AA in Fig. 1 ;

Fig. 3

a side view first with the in Fig. 1 and 2 described excavating device, then a feed unit of split in the trench and finally a unit for supplying U-shaped channel elements;

Fig. 4a

a section along the line BB in Fig. 3 ;

Fig. 4b

a section along the line CC in Fig. 3 ;

Fig. 5

a side view of the carriage for storing the U-shaped channel elements;

Fig. 6a

a section along the line DD in Fig. 5 ;

Fig. 6b

a section along the line EE in Fig. 5 ;

Fig. 7

a view of the supply of the U-shaped channel elements to the trench.

First, in the Fig. 1 and 2 the device for digging a trench shown in a single view.

On a track 1 a railway track a work car 2 with a superstructure 3 is movable. The task of this work cart 2 with a corresponding tool is to excavate a trench 4 at a distance laterally next to the track 1.

For this purpose, a laterally projecting on the superstructure 3 of the work cart 2, telescopic boom 5 is provided. At the outer end of this boom 5 there is an excavating device 6. This excavating device 6 is designed as a milling device 7 in the form of an endlessly circulating belt 8 with cutting elements 9 located thereon.

Furthermore, a conveyor belt 10 is provided. This opens with its front end above a - not shown - another work car 2 on the same track 1 or on a neighboring track. This conveyor belt 10 is pivotable about a vertical axis.

The operation of the trenching apparatus is as follows:

First, the telescopic boom 5 brings the milling device 7 of the excavating device 6 in the correct lateral distance with respect to the track 1. However, it is exactly the point where the trench 4 is to be excavated.

Subsequently, the milling device 7 is pivoted by means of a corresponding drive downwards, with an inclination angle, as in Fig. 1 is recognizable. Through the endless circulating belt 8, the soil is milled off by means of the cutting elements 9, so that the trench 4 is formed. It is essential that during this milling process the work cart 2 moves continuously forward. This means that during this forward drive of the work cart 2, the soil is continuously milled by means of the milling device 7 and thus according to the forward drive of the work cart 2 of the trench 4 is created. By a height adjustment of the boom 5 at its superstructure 3 of the work cart 2 and / or by the inclination of the milling device 7, the depth of the trench 4 can be predetermined. The control is preferably carried out automatically by means of a laser positioning.

The excavated from the milling device 7 excavated material 11 is the conveyor belt 10 abandoned. This conveyor belt 10 is pivoted about its vertical axis such that the front end of this conveyor belt 10 throws the excavated material 11 in a corresponding reservoir. This can be the work car 2, a work car 2 located behind or in front of it, a work car 2 on a neighboring track or a lorry.

After having been introduced into the soil 12 of the trench 4, there is a risk that the lateral soil 12 breaks into the trench 4. For this reason, a support device 13 for the side walls of the trench 4 is provided following the excavating device 6. This is on a telescoping cantilever arm 15 is arranged such that the U-profile projects into the trench 4 such that the lateral support boards 14 rest laterally on the trench 4 and support the soil 12 , It is essential that this is formed synchronously by the support boards 14 Verbau. This means that immediately behind the excavating device 6, the support boards 14 are tracked. Another peculiarity of the U-profile defining the support boards 14 is that it only has a floor in the front area (which rigidly spaces the support boards 14), while the floor is omitted in the rear area.

Because this bottomless area of the U-profile Split 16 is supplied. This is stored in a storage container 17. This defines, together with a transport device 18 in the form of a conveyor belt, a split-feed device 19.

The functionality is as follows:

The stockpiled in the storage container 17 split 16 is fed via the obliquely forward transport device 18 in the form of the conveyor belt the trench 4, in the region of the U-profile, which defines the lateral support boards 14. Specifically, the split 16 is supplied to that region of the U-profile, which has no bottom. This means that the split 16 is fed directly to the subsurface of the excavated trench 4.

However, located at the rear end of the two support boards 14, a transversely extending scraper 20. This sweeps smoothing underneath the split 16 smooth and possibly compressed.

Finally, a channel element insertion device 21 is provided. This has the purpose of supplying U-shaped channel elements 22 via a feed device 23 to the trench 4, which in the meantime is provided with a split 16 in the bottom region.

The Kanalelementeeinsetzeinrichtung 21 initially has U-shaped channel elements 22 which are palletized on the work car 2 (in Fig. 5 far left). By means of a gantry crane 24, the palletized U-shaped channel elements 22 are transported to a storage unit 25. The gantry crane 24 moves here on rail wheels on flank rails of train carriages coupled in series. The gantry crane 24 is equipped with a pallet fork or other lifting device which serves to transport the palletized U-shaped channel elements 22.

The laying unit 25 takes from the pallets a fractional unit of U-shaped channel elements 22 and places them on a cross conveyor belt 26 from. The cross conveyor belt 26 transports the U-shaped channel elements 22 to a transfer conveyor belt which defines the feeder 23.

From there, the supply of the removed U-shaped channel elements 22 to a mounting device 27. This is essentially designed as a U-profile and serves equally for lateral support of the soil 12 in the trench 4. In this way, the U-shaped channel elements 22 after their installation in series one behind the other.

In Fig. 6b Yet another function of the trolley for the U-shaped channel elements is shown. Since the U-shaped channel elements store on standard pallets, a fast clearing must be possible after emptying the respective pallet. For this purpose, an additional cross conveyor belt 28 is provided, which drives the empty pallet immediately after emptying from the storage area for the newly filled pallet. This ensures that a continuous work progress is guaranteed. It can thus be lined up several cars for the U-shaped channel elements 22, so as to ensure a continuous supply of the U-shaped channel elements 22. The gantry crane 24 moves to transport the pallets on the rails from car to car. Thus, the gantry crane 24 can transport both the old pallets but also the new pallets to the intended settling place.

LIST OF REFERENCE NUMBERS

1

track

2

trolley

3

superstructure

4

dig

5

boom

6

excavator

7

milling device

8th

tape

9

milling element

10

conveyor belt

11

excavated material

12

soil

13

support means

14

support board

15

cantilever

16

Split

17

storage container

18

transport means

19

Split feeder

20

scraper

21

Kanalelementeeinsetzeinrichtung

22

U-shaped channel elements

23

feeding

24

gantry crane

25

place unit

26

Cross conveyor belt

27

installing means

28

Cross conveyor belt

Claims (11)

1. A method for the fully- or semi-automatic laying of U-shaped channel elements (22) beside the track (1) of a rail section,
   in which a trench (4) is initially excavated from the ground (12),
   in which split (16) or the like is subsequently applied to the bottom of the trench (4),
   in which the U-shaped channel elements (22) are finally inserted into the trench (4),
   in which one or a plurality of work carriages (2), which can be moved on the track (1), are used,
   which, downstream from one another viewed in the direction of travel, have/has an excavating device (6) for the trench (4), a split application device (19) as well as a channel element insertion device (21) and which are/is moved forwards continuously during the operations, characterized in
   that the excavation material (11) is milled by means of the excavating device (6) and that a milling device (7) comprising an endlessly circulating belt (8) or chain comprising milling elements (9) arranged thereon is used for milling,
   that the width of the milling device (7) corresponds to the width of the trench (4) to be excavated, so that the excavation of the U-shaped trench (4) is carried out so accurately and continuously that separate filling operations are no longer required,
   that the excavating device (6) is arranged on a beam (5), which can be telescoped at right angles to the direction of travel of the work carriage (2),
   that the telescopic beam (5) and/or the excavating device (6) is arranged on the telescopic beam (5) so as to be adjustable in height,
   that the excavating device (6) is arranged on the work carriage (2) so as to be capable of being replaced, and
   that a position measuring device for determining the position with respect to the track (1) is assigned to the excavating device (6), wherein the positioning of the milling device (7) is regulated automatically with respect to the height and lateral position as well as with respect to the inclination, whereby the automatic inclination regulation of the milling device (7) can take place as a function of the depth as well as width of the trench (4) to be excavated.
2. The method according to the preceding claim,
   characterized in
   that, after the excavation, the excavation material (11) is supplied continuously to the work carriage (2) or to another work carriage (2), which can be moved on the track (2) or an adjacent track.
3. The method according to any one of the preceding claims, characterized in
   that, for supplying the excavation material (11) to the work carriage (2), provision is made for a conveyor belt (10), onto which the excavation material (11) is applied by the excavating device (6), wherein the conveyor belt (10) can be pivoted about a vertical axis.
4. The method according to any one of the preceding claims, characterized in
   that the split application device (19) has a storage container (17) for the split (16) on the work carriage (2), as well as a transport device (18), which starts at the storage container (17) and ends in the trench (4).
5. The method according to any one of the preceding claims, characterized in
   that the side walls of the trench (4) are supported by lateral support boards (14), which are arranged on a cantilever arm (15) of the work carriage (2) and which are taken along synchronously, in the area between the excavation location of the trench (4) and the supply of the U-shaped channel elements (22)
6. The method according to any one of the preceding claims, characterized in
   that the split (16), which is applied to the bottom of the trench (4), is smoothed and compacted, if applicable, by a scraper (20),
   wherein the scraper (20) is fixedly connected to the work carriage (2) and is brought along synchronously.
7. The method according to claims 5 and 6, characterized in
   that the scraper (20) is arranged on the support boards (14).
8. The method according to any one of the preceding claims, characterized in
   that the U-shaped channel elements (22) are stored on the work carriage (2) and are supplied to the trench (4) from there by means of a supply device (23).
9. The method according to any one of the preceding claims, characterized in
   that operations, which are relevant from a measuring aspect, relating to the distance to the track, the height position of the U-shaped channel elements as well as the lateral position of the channel, as well as the displacement of the channel during the operating process, namely the distortion during the forwards movement, are carried out by means of a position recognition device comprising an assigned control.
10. The method according to any one of the preceding claims, characterized on
    that the lateral ground (12) is redensified and/or smoothed after the installation of the U-shaped channel elements (22).
11. A device for the fully- or semi-automatic laying of U-shaped channel elements (22) beside the track (1) of a rail section according to any one of claims 1 to 10, wherein the device has at least one work carriage (2), which can be moved on the track (1),
    which has in succession, viewed in the direction of travel, an excavating device (6) for excavating a trench (4) from the ground (12), a split application device (19) for applying split (18) or the like to the bottom of the trench (4) as well as a channel element insertion device (21) for inserting the U-shaped channel elements (22) into the trench (4), and
    which can be moved forwards continuously during the operations, characterized in
    that the excavating device (6) is a milling device (7) comprising an endlessly circulating belt (8) or chain comprising milling elements (9) arranged thereon, which is arranged on a beam (5), which can be telescoped at right angles to the direction of travel of the work carriage (2),
    wherein the telescopic beam (5) and/or the excavating device (6) is arranged on the telescopic beam (5) so as to be adjustable in height,
    wherein the excavating device (6) is arranged on the work carriage (2) so as to be capable of being replaced, and a position measuring device for determining the position with respect to the track (1) is assigned to the excavating device (6), and
    wherein the device has a control for the automatic regulation of the positing of the milling device (7) with respect to height and lateral position as well as with respect to inclination, whereby
    the automatic inclination regulation of the milling device (7) can take place as a function of the depth as well as width of the trench (4) to be excavated.

Images