EP2907920A1 - Verfahren und Vorrichtung zum Verdichten und Reinigen eines Gleis-Schotterbettes - Google Patents

Verfahren und Vorrichtung zum Verdichten und Reinigen eines Gleis-Schotterbettes Download PDF

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Publication number
EP2907920A1
EP2907920A1 EP15154956.5A EP15154956A EP2907920A1 EP 2907920 A1 EP2907920 A1 EP 2907920A1 EP 15154956 A EP15154956 A EP 15154956A EP 2907920 A1 EP2907920 A1 EP 2907920A1
Authority
EP
European Patent Office
Prior art keywords
ballast
layer
tool
ballasted
pollution particles
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP15154956.5A
Other languages
English (en)
French (fr)
Other versions
EP2907920B1 (de
Inventor
Roland GOURVES
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sol Solution SAS
Original Assignee
Sol Solution SAS
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Filing date
Publication date
Application filed by Sol Solution SAS filed Critical Sol Solution SAS
Publication of EP2907920A1 publication Critical patent/EP2907920A1/de
Application granted granted Critical
Publication of EP2907920B1 publication Critical patent/EP2907920B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B27/00—Placing, renewing, working, cleaning, or taking-up the ballast, with or without concurrent work on the track; Devices therefor; Packing sleepers
    • E01B27/06—Renewing or cleaning the ballast in situ, with or without concurrent work on the track
    • E01B27/10—Renewing or cleaning the ballast in situ, with or without concurrent work on the track without taking-up track
    • E01B27/102—Removing unwanted material without removing the ballast
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B2203/00—Devices for working the railway-superstructure
    • E01B2203/04—Cleaning or reconditioning ballast or ground beneath
    • E01B2203/042—Cleaning or reconditioning ballast or ground beneath in situ,e.g. vacuum-cleaners
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B2204/00—Characteristics of the track and its foundations
    • E01B2204/16—Specific granulometry of the ballast

Definitions

  • the present invention relates to a method and a device for treating a railway.
  • the invention is concerned with railway tracks of the type comprising, from the bottom upwards, an underlayer, a ballasted layer which covers the underlayer, sleepers which rest on the ballasted layer, and rails of rolling of railway vehicles, which are supported by the sleepers to which the rails are attached.
  • the ballasted layer has the function of transmitting to the underlayer and the underlying ground the forces generated by the passage of the trains, without the sub-layer being deformed by compression.
  • the role of this ballast layer is also to embed the sleepers in order to have a resistance to the longitudinal deformation of the rails.
  • the ballasted layer is, when it is set up for the construction of a new railway, made of ballast granules, commonly called ballast, whose desired mechanical properties are based on a homogeneous particle size, typically varying from 10 mm to 50 mm.
  • the ballast wears with the traffic. More specifically, the ballast gradually tends to be polluted by fine particles, that is to say particles whose particle size is smaller than that desired for ballast aggregates. These fine particles may be due to particulate backflows from the underlayer and / or abrasion of the ballast aggregates. Whatever the cause, these particles of pollution tend to accumulate in the ballast layer, clogging the residual spaces between the ballast aggregates, which affects the mechanical properties of the ballast layer.
  • FR-A-971,180 which can be considered as the state of the art closest to the invention, proposed to suck pollution particles, such as fines, directly into the ballasted layer, using a tool ad In operation, this tool is driven into the thickness of the ballasted layer and applies an air depression such that the particles of pollution are, by suction, separated from the ballast granules, which themselves remain in the layer. ballasted.
  • FR-A-971,180 even proposes to keep this tool in vibration while it sucks and that it is moved in the ballasted layer so that the vibration applied to the tool is transmitted to the aggregates the most and contributes to the take-off of pollution particles.
  • the ballast layer thus cleaned up may have insufficient mechanical strength due to the residual voids between the aggregates, resulting, on the one hand, from the suction of the pollution particles and on the other hand, the relative spacing of the aggregates imposed by the displacement between them of the tool, tapered for this purpose.
  • the aim of the present invention is to propose a treatment of a railroad which makes it possible, at a lower cost, to extend the service life of the ballast of this railway while guaranteeing the mechanical properties thereof.
  • the subject of the invention is a method of treating a railway, as defined in claim 1.
  • the subject of the invention is also a device for treating a railway, as defined in claim 6.
  • One of the basic ideas of the invention is to seek to separate the particles of pollution ballast granules in situ, that is to say directly within the railway to be treated, without having to excavate the ballasted layer polluted.
  • the pollution particles are sucked directly into the ballasted layer, by means of the use of an ad hoc tool which is designed to be pressed into the thickness of the layer at the same time. ballasted and to apply, in this thickness of the ballasted layer, an air depression such that the pollution particles are separated from the ballast granules, which themselves remain in the ballasted layer.
  • the pollution particles thus sucked are discharged outside the ballasted layer, via the tool.
  • the aforementioned air depression requires connecting the suction duct, formed by the tool, to a vacuum source, typically a pump.
  • the ballasted layer thus cleaned by suction is "recompacted" thanks to the tool, that is to say mechanically processed by this tool so that, by clamping and vibration, the ballast granules, freed from the interstitial pollution particles, rearranged with respect to one another so as to imbricate each other in order to give the ballasted layer cleared of the desired mechanical properties, close to those of the ballast deposited at the construction of the track railway.
  • Such a treatment according to the invention thus combining in the same tool the dual function of suction and compaction by clamping and vibration, can advantageously be achieved by a tamper modified according to the invention, that is to say a tamper integrating the aspiration function of the pollution particles.
  • a tamper modified according to the invention that is to say a tamper integrating the aspiration function of the pollution particles.
  • the inventors have found that the pollution particles have a systematic tendency to accumulate at the same time, at the base of the ballasted layer, that is to say near the sub-layer of the railway, and under the crossbeams of the sleepers, more generally under the ends of the crosspieces where are fixed the rails.
  • the aspiration of the pollution particles and the compaction of the ballast granules according to the invention can advantageously be targeted in the regions where these particles accumulate.
  • the railway comprises an underlayer 2, which covers the ground S and which itself is covered with a ballasted layer 3 of the railway track 1.
  • This railway also comprises rails 4, on which railway vehicles drive and which are fixed, by any appropriate means, to sleepers 5 placed across the railway line 1, under the rails 4, to maintain the spacing and the inclination of these rails.
  • the sleepers 5 rest directly on the ballast layer 3, to which the sleepers transmit the loads of the railway vehicles traveling on the rails 4.
  • the ballasted layer 3 transmits, for its part, the forces generated by the passage of the railway vehicles to the undercarriage. layer 2 and soil S, without the latter being deformed by packing.
  • the ballasted layer 3 is also designed to embed the sleepers 5 to ensure resistance to longitudinal deformations of the rails 4.
  • the ballasted layer 3 includes, at the same time, granules of ballast 3A, typically crushed stone, whose particle size is predetermined and varies between 10 mm and 50 mm, and fine particles 3B, whose size is smaller than that of the ballast aggregates and which, therefore, pollutes the ballast granules 3A by altering the mechanical characteristics of the ballasted layer 3.
  • the origin of these pollution particles 3B is various and not limiting of the present invention: in all cases, the presence of these particles 3B increases over time, as and when rail traffic on the railway so that, in the long run, these pollution particles 3B clog the interstitial spaces between the ballast granules 3A.
  • the ballasted layer 3 is more polluted, that is to say has a higher concentration of pollution particles 3B, both at the base of the ballasted layer 3, in other words in the vicinity of the underlayer 2, and under the crosspieces 5, more precisely under the opposite ends of these sleepers, typically under the blokets of the sleepers 5 when the latter are provided.
  • the presence of these more polluted regions of the ballasted layer 3 could be explained by, on the one hand, the effect of the vibrations transmitted to the ballasted layer 3 during the passage of railway gear on the rails 4 and the effect of the leaching by rain and, secondly, the application of the maximum stresses by the sleepers 5 on the ballasted layer 3.
  • a railway work machine 10 is also shown for processing the railway line 1. In the embodiment considered here, this machine 10 is able to roll on the rails 4 of the railway line 1.
  • the machine 10 is equipped, in two copies in the example of realization considered on the figure 1 , a tool 12 for processing the ballasted layer 3, an embodiment of this tool 12 being shown in FIG. figure 2 .
  • This tool 12 comprises an elongate body 14 which, in use, extends in length substantially vertically and is pressed inside the ballasted layer 3, in other words in the thickness of this layer 3.
  • the body 14 includes a top portion 16 whose outer face is substantially frustoconical and converging downwards.
  • This body 14 also includes a lower part 18 made in the form of a stuffing bat which is intended to be driven into the ballasted layer 3, then used in this ballast layer 3 to compact the ballast granules 3A by clamping and vibration.
  • the body 14 generally has an outer face whose geometry makes it possible, inter alia, to facilitate the insertion of this body 14 into the ballasted layer 3, in particular until positioning the lower part 18 near the underlayer 2 .
  • the body 14, more specifically its part 18 forming a stuffing bat delimits at least one through orifice 20, which connects the outer face of this body to a free volume which is delimited inside the body 14 in the form of a duct 22 extending substantially in the longitudinal direction of the body 14.
  • a single orifice 20 is provided, delimited by the lower part 18 of the body 14.
  • the number and the arrangement of this or these orifices 20 may vary, as variants not shown.
  • the upper part 16 may be provided with one or more of these orifices, where appropriate regularly distributed around this upper part 16.
  • each main face of the part 18 forming a stuffing pad may be provided with one or more of these orifices.
  • the or each of these orifices 20 connects the outside of the body 14 to the inner conduit 22, this inner conduit connecting, through the interior of the body 14, the orifice or the various orifices 20 to an upper terminal orifice 24 located at the upper end of the body 14.
  • the railway working machine 10 is also equipped with a suction pump 26 whose suction inlet is connected to the orifice 24 of the body 14 of each of the processing tools 12, by means of fluid connection means. ad hoc 26.
  • the fluidic connection means 28 also constitute means of mechanical connection between the corresponding processing tool 12 and the rest of the railway work machine 10, in particular in order to manipulate this processing tool by a motorized assistance system.
  • the embodiment of these fluidic connection and mechanical connection means 28 is not limiting of the invention.
  • the aforementioned suction pump 26 has various embodiments, in the sense that, more generally, it corresponds to a source of vacuum, able to create an air vacuum, communicated to the orifice 24 of the duct 22 of each treatment tool 12 by the aforementioned means 28.
  • each of the orifices 20 is provided with a screen 30 designed to separate the ballast granules 3A with respect to the pollution particles 3B of the ballasted layer 3, depending on their particle size: to do this, each sieve 30 has a mesh sized to both pass through the pollution particles 3B and retain the ballast granules 3A.
  • each of the processing tools 12 is pushed inside the ballasted layer 3, substantially vertically, the body 14 then extending across the thickness of the ballasted layer 3, as shown schematically on the figure 1 .
  • an air vacuum is applied to the orifice 24 of the duct 22 of each of the tools 12, causing a suction inside the duct 22.
  • an air vacuum is communicated to each of the orifices 20: the latter being in contact with the ballasted layer 3, this depression is communicated to the spaces between the ballast granules 3A, in other words to the spaces likely to contain the particles of pollution 3B.
  • the aspiration of the pollution particles 3B is accompanied and / or followed by a compaction of the ballasted layer 3, this compaction being implemented by clamping and vibration.
  • Such compaction which consists in rearranging, by approximation, the relative arrangement between the ballast granules 3A, freed at least partly of the pollution particles 3B, is achieved by the processing tools 12, each of them forming, in a way, a tamper incorporating a suction function.
  • these ballast granules 3A, between which the aspiration of the pollution particles 3B leaves residual voids then interlock into each other to form a more compact assembly, by reinforcing the mechanical properties, in particular the resistance , of the ballasted layer 3 depolluted.
  • the rearrangement of the ballast granules 3A is capable of releasing pollution particles. 3B which otherwise would have remained stuck between some of the ballast granules, which therefore makes it possible to increase the amount of pollution particles sucked.
  • the use of the treatment tools 12 for both sucking the pollution particles 3B and, concomitantly and / or successively, recompacting the ballast granules 3A depolluted is compatible with the simultaneous use of a pre-existing tamper: in in this case, only a part of the compaction of the ballast aggregates results from the action of the processing tools 12, the rest of the compaction resulting from the action of the pre-existing tamper.
  • each treatment tool 12 is depressed. in the aforementioned regions of the ballasted layer 3 so as to effectively suck a large amount of pollution particles 3B present in the treated layer 3. More specifically, at least one of the treatment tools 12 is driven into the ballasted layer 3 so that at least part of its body 14, in particular the lower part 18, is in the immediate vicinity of the underlayer 2: this way, this tool 12 sucks up the pollution particles 3B located closer to this sublayer 2 than the opposite free surface of the ballasted layer 3.
  • Another possibility which can also be combined with what comes from be described, consists in driving at least one of the processing tools 12 near one of the longitudinal ends of one of the crosspieces 5, so that at least a portion of the body 14 of this tool, in particular its upper part 16, either in contact with the region of the ballasted layer 3, situated just below the aforementioned end of the crossbar: in this way, the pollution particles 3B present in the aforementioned region of the ballasted layer 3 are sucked by this tool 12.
  • the railway 1 are possible.
  • the processing device including the processing tools 12, the suction pump 26 and the fluidic connection and mechanical connection means 28, is embarked on a mobile railway work machine, such as the machine 10 at the figure 1
  • this treatment device can be installed along a railway track to be treated, especially if it is waived that this treatment device can, by itself, recompact the ballast granules 3A vacuum-cleaned.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
EP15154956.5A 2014-02-14 2015-02-13 Verfahren und vorrichtung zum verdichten und reinigen eines gleis-schotterbettes Active EP2907920B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1451207A FR3017630B1 (fr) 2014-02-14 2014-02-14 Procede et dispositif de traitement d'une voie ferree

Publications (2)

Publication Number Publication Date
EP2907920A1 true EP2907920A1 (de) 2015-08-19
EP2907920B1 EP2907920B1 (de) 2016-08-31

Family

ID=50933297

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15154956.5A Active EP2907920B1 (de) 2014-02-14 2015-02-13 Verfahren und vorrichtung zum verdichten und reinigen eines gleis-schotterbettes

Country Status (2)

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EP (1) EP2907920B1 (de)
FR (1) FR3017630B1 (de)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2028688A (en) * 1931-10-16 1936-01-21 Walter S Rugg Ballast cleaning apparatus
FR971180A (de) 1951-01-15

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR971180A (de) 1951-01-15
US2028688A (en) * 1931-10-16 1936-01-21 Walter S Rugg Ballast cleaning apparatus

Also Published As

Publication number Publication date
EP2907920B1 (de) 2016-08-31
FR3017630A1 (fr) 2015-08-21
FR3017630B1 (fr) 2017-01-27

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