EA025316B1 - Method for renovating a ballast bed of a track - Google Patents

Abstract

In order to renovate a ballast bed (2), a first clearing device (6), in terms of a working direction (5), takes up an upper, re-usable bed layer (7) and feeds it to a cleaning system. The gravel (16) which is sieved out in the process is discharged onto the sub-grade (9) behind the second clearing device (8) in the working direction (5) in order to manufacture a gravel layer (15), is levelled and compressed. In parallel with manufacturing the gravel layer, further cleaning processes of the ballast (17) which can further be re-used is carried out for residual gravel (25) which is then discharged onto the track (3) in front of the first clearing device (6) in the working direction (5) and after that is again taken up by the first clearing device (6) in conjunction with the upper bed layer (7).

Description

The invention relates to a method for restoring crushed stone ballast of a track, in which the first, with respect to the direction of work, the stripping device captures the top layer of ballast suitable for further use and is sent for cleaning, while in parallel with this using the following, second stripping device when creating the roadbed is captured and removed the bottom layer of ballast that borders on the upper layer of ballast, in which the gravel on the ravlyaetsya reused as the glider gravel on the subgrade layer. According to patent EP 2025810, it is known about seizing for the purpose of re-using the uppermost layer of crushed stone ballast. At the same time, the gravel obtained during the cleaning is dumped onto the remaining crushed stone ballast and with the help of the following, second stripping device is captured together with the gravel suitable for further use. It is discharged after the third stripping device onto the released subgrade to form the lowest layers of the newly created and cleaned crushed stone ballast. From EP 2257673 it is also known about the intermediate storage of the gravel obtained during the first cleaning on crushed stone ballast. It is captured along with gravel ballast suitable for further use by gravel and dumped to form a gravel layer on the released subgrade.

The objective of this invention is to create a method of the above type, allowing an effective way during the cleaning of rubble to get from the crushed stone ballast suitable for further use of gravel.

This problem is solved according to the invention by the corresponding generic concept by means of the following features:

a) as a result of the first cleaning process of the top layer of ballast, the gravel is sifted out of crushed stone suitable for further use in the direction of work behind the second wiper to the gravel layer, leveled and compacted,

b) in parallel with the creation of the gravel layer, further cleaning of crushed stone suitable for further use is carried out for residual gravel, which is then dumped onto the track in the direction of work before the first stripping device and then grabbed with a stripper together with the top layer of ballast.

A method of this kind makes it possible to capture both crushed stone and gravel suitable for further use in a particularly simple and effective manner. The immediate removal of the gravel produced during the first cleaning process makes it possible to improve the cleaning of the remaining gravel-gravel mixture. The residual gravel resulting from the subsequent cleaning process, due to intermediate storage on the ballast layer, can be easily captured without additional construction costs with the aim of almost complete reuse.

Further advantages of the invention are derived from the description of the drawings. Below the invention will be described in detail based on the embodiment shown in the drawing. The following is shown there: FIG. 1 and 2 respectively - a simplified lateral projection of the front or rear - relative to the direction of work - the installation site for the restoration of crushed stone ballast.

Depicted in FIG. 1 and 2, the machine 1 for the restoration of crushed stone ballast 2 consists of several movable units that are coupled to each other and are moved along the track. 4. The first is provided regarding the direction of work 5 of the machine 1 - a stripping device 6 for gripping the upper, suitable for further use of layer 7 of crushed stone ballast 2. In addition, a second wiper 8 is placed next, with which, when creating the earth bed 9, the lower ballast layer 10 adjacent to the upper ballast layer 7 can be captured. and the stripping devices 6, 8 are made here as an example as endless, stripping chains circled around the track 3. Directly behind the first stripping device 6 is located, loaded by means of a belt conveyor 11, a first screening installation 12, which is expediently designed as a screen equipped with rotating rollers. The gravel 16 obtained as a sediment at this first screening station 12 is moved by several belt conveyors 11 to the first place of unloading 13, which is located relative to the direction of work 5 - directly behind the second stripping device 8. Planning and compacting is provided in the area of the place of unloading 13 a device 14 for creating a gravel layer 15 lying on a subgrade 9.

Remaining in the first screening unit 12 after the gravel 16 has been separated, the crushed stone 17, suitable for further use, is fed through other belt conveyors 11 to the second, third, fourth and fifth screening unit 18-21. For deep cleaning, that is, the maximum possible separation of gravel 16 still remaining in the rubble, these screens 18-21 are made in different ways. In addition, between the third and fourth installation for screening 19, 20, a crushing plant 22 is provided for sharpening crushed stone 17. The resultant, finally, after the fifth installation for screening 21 and, accordingly, deeply cleared crushed stone 17 through a plurality of belt conveyors 11 gets to the place of unloading 23, which is located behind the second stripping device 8. Immediately before the fifth installation for screening 21 there is a place of unloading of gravel 24 for dropping onto the track 3 the resulting sludge on installations I 18-21 screening and crushing plant 22 the residual gravel 25.

The following is a detailed discussion of how to restore crushed stone ballast 2 using machine 1 described as an example.

Machine 1 is continuously moving along the track 3 in the direction of work 5. The first stripping device 6 is installed relative to the verticals so that only the upper layer 7 of crushed-stone ballast 2 suitable for further use is captured. The next, second stripping device 8 is installed so that creating the roadbed 9, the remaining lower layer 10 of crushed stone ballast 2 is captured and disposed of. During the first screening process of the first cleaning process of igodnogo for further use of the upper layer 17 of gravel ballast 7 is eliminated gravel 16. It immediately in the direction of works 5 after the second stripping device 8 is discharged through the first discharge 13 to 9 subgrade, leveled and compacted to create a layer of gravel 15.

Pre-cleaned by the first screening installation 12, crushed stone 17 is subsequently sequentially intensively cleaned, sharpened and washed in the following screening installations 18-21. The resulting residual gravel 25, which is suitable for further use, is discharged onto the rail track 3 through the gravel discharge site 24 in the direction of work 5 before the first stripping device 6 and subsequently with the top layer of ballast 7 is captured by the first stripping device 6. The described cycle cleaning is repeated with the first cleaning through the first installation for screening 12, which can also be called pre-cleaning.

In parallel with this, by means of the second stripping device 8, the remaining bottom layer of the ballast 10 is continuously gripped, which is fed through belt conveyors 11 into not shown hopper cars for recycling.

In the meantime, the gravel layer 15, created by the time, is discharged and leveled, the new crushed stone previously stored in a not depicted bunker. And, finally, - through the place of unloading 23 - taken from crushed stone ballast 2 and cleaned crushed stone 17 and this newly laid crushed stone base 3 is laid on this layer of rubble and the newly laid track 3 is laid down.

Claims (1)

The method of restoring crushed stone ballast (2) of the rail track (3), in which, by means of the first, relative to the direction of work (5), stripping device (6), the upper ballast layer (7) suitable for further use is captured and sent for cleaning, in parallel with by means of the next second cleaning device (8), when creating the subgrade (9), the lower ballast layer (10) adjacent to the upper layer of ballast (7) is captured and disposed of, characterized in that after the ballast (7) is sent for cleaning a) carry out a preliminary cleaning of the indicated upper layer of ballast (7), obtain crushed stone (17) and gravel (16) suitable for further use, then the resulting gravel (16) is dumped onto the subgrade (9) in the direction of the work (5) after the second a cleaning device (8), then it is leveled and compacted, creating a gravel layer (15); b) in parallel with the creation of the gravel layer, further gravel suitable for further use is cleaned (17) to obtain residual gravel (25), which is then dumped onto the rail track (3) in the direction of the work (5) in front of the first stripping device (6) and then, together with the upper layer of ballast (7), it is again captured by the first stripping device (6) and again sent for cleaning.