EP3927888B1 - Dispositif mobile de chauffage d'un rail de voie ferrée par lampes électriques à rayonnement infrarouge - Google Patents

Dispositif mobile de chauffage d'un rail de voie ferrée par lampes électriques à rayonnement infrarouge Download PDF

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Publication number
EP3927888B1
EP3927888B1 EP20701656.9A EP20701656A EP3927888B1 EP 3927888 B1 EP3927888 B1 EP 3927888B1 EP 20701656 A EP20701656 A EP 20701656A EP 3927888 B1 EP3927888 B1 EP 3927888B1
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EP
European Patent Office
Prior art keywords
heating
rail
heating zone
radiation
zone
Prior art date
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Active
Application number
EP20701656.9A
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German (de)
English (en)
French (fr)
Other versions
EP3927888A1 (fr
EP3927888C0 (fr
Inventor
Marc-Antoine SAVOYAT
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.)
Matisa Materiel Industriel SA
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Matisa Materiel Industriel SA
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Publication of EP3927888C0 publication Critical patent/EP3927888C0/fr
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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
    • E01B29/00—Laying, rebuilding, or taking-up tracks; Tools or machines therefor
    • E01B29/16—Transporting, laying, removing, or replacing rails; Moving rails placed on sleepers in the track
    • E01B29/17—Lengths of rails assembled into strings, e.g. welded together
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B31/00—Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor
    • E01B31/02—Working rail or other metal track components on the spot
    • E01B31/18—Reconditioning or repairing worn or damaged parts on the spot, e.g. applying inlays, building-up rails by welding; Heating or cooling of parts on the spot, e.g. for reducing joint gaps, for hardening rails
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/032—Heaters specially adapted for heating by radiation heating

Definitions

  • the invention relates to the heating of a rail of a railway track, with a view to its neutralization or its pre-neutralization, before its attachment to a railway sleeper. It relates both to a mobile heating device moving along the track and to a laying method including heating of the rail.
  • the rails of the railway tracks are subject to significant temperature variations depending on the seasons and weather conditions.
  • the rails tend to lengthen and expand under the effect of a rise in temperature, and, conversely, to contract under the effect of a drop in temperature.
  • a continuous rail heating solution used to date uses induction technology. This method makes it possible to obtain sufficiently precise heating to guarantee the laying of the rails within the required tolerance of the “neutral” temperature. We can then speak of fine direct thermal neutralization. But the equipment necessary for the intervention is relatively complex, since it requires a power generator, as well as cooling of the power circuits, the generator and the inductors.
  • a thermal "pre-neutralization” procedure which consists in bringing the rail, before its attachment to the sleepers, to a temperature sufficiently close to the "neutral” temperature of the place. , without guaranteeing that the “neutral” temperature will be reached.
  • the advantage of such a “pre-neutralization” is to immediately allow movement at a speed of the order of 80 km/h instead of 50 km/h, pending the final mechanical neutralization operations described previously.
  • One method for carrying out this thermal pre-neutralization consists of spraying the rails with hot water, a simple solution, but nevertheless presenting operating disadvantages, particularly in terms of efficiency and the routing and evacuation of water, which reduce its interest.
  • a work train comprising at least one heating device comprising at least one heating zone, one or more gas burners, and one or more radiant bodies interposed between the gas burner(s) and the heating zone, the radiant bodies being perforated by orifices opening into the heating zone, the work train comprising on the one hand traction means for moving the work train in a direction of laying, so that at each instant a portion of the rail , not fixed to a crosspiece, crosses the heating zone; and on the other hand means for supplying the gas burner(s) in such a way that no flame emerges from the orifices in the heating zone and that at least 75%, and preferably at least 80%, and preferably at least 85% of the heat supplied to the portion of the rail is transmitted by radiation from the radiating body or bodies.
  • the radiation essentially in the infrared spectrum, ensures excellent heating efficiency, with low heat loss.
  • the radiation is not influenced by wind or other climatic parameters.
  • the invention aims to remedy the drawbacks of the state of the art and to propose a heating mode which is powerful, precise in terms of the quantity of heat transmitted, and responsive in the transient periods, change in laying speed or ambient temperature change.
  • a mobile device for heating a rail of a railway track comprising: at least one heating module comprising at least one heating zone and at least one source radiant heat directed towards the heating zone; and a vehicle for transporting the heating module, capable of traveling along a railway track in a direction of laying, so that at each instant a portion of a rail of the railway track, not fixed to a sleeper of the railway, crosses the heating zone in a direction of progression.
  • the heating module comprises at least one heating unit, the heating unit comprising a plurality of electric infrared radiation lamps distributed around the periphery of the heating zone and oriented towards the heating zone, each of the electric infrared radiation lamps comprising at least one radiation source capable of emitting infrared radiation having a maximum spectral density power for a wavelength of less than 2 ⁇ m, preferably less than 1.4 ⁇ m, very preferably less than 1.2 ⁇ m, and at least one primary reflector oriented to reflect the infrared radiation emitted by the radiation source towards the heating zone, the radiation source being disposed between the primary reflector and the heating zone, directly facing the heating zone, the heating unit further comprising a secondary reflector having a concave reflective surface surrounding the heating zone and capable of returning reflected rays passing between the infrared radiation electric lamps to the heating zone.
  • a steel railway rail exhibits an absorbance which increases with decreasing wavelength, at least for wavelengths greater than 0.5 ⁇ m.
  • each infrared lamp is intended primarily to direct the radiation emitted by the lamp to the rail, but it also has the function of a secondary reflector to redirect to the rail the radiation that the rail has previously reflected.
  • the common secondary reflector completes the action of the primary reflectors to redirect the radiation which has not been absorbed towards the rail. This arrangement makes it possible to obtain a very good efficiency with lamps which are not contiguous.
  • Electric lamps with near infrared radiation have an extremely fast response time compared to the speed of advance of railway laying work, which makes it possible to envisage not only pre-neutralization operations, but also fine neutralization operations.
  • At least some of the lamps are distributed at distances from each other at the periphery of the heating zone. According to one embodiment, at least some of the infrared radiation electric lamps are joined two by two
  • the secondary reflector should preferably surround the rail positioned at the center of the heating zone as much as possible.
  • the reflective surface of the secondary reflector to have, in section by a plane perpendicular to the direction of progression, a section in the form of an arc of a circle with an angle greater than 180°, preferably greater than 240° or a circular section.
  • the reflective surface of the secondary reflector has, in section by a plane perpendicular to the direction of progression, a radius of curvature of less than 160 mm, preferably less than 120 mm, and greater than 70 mm, preferably greater than 100 mm .
  • the reflective surface of the secondary reflector should preferably have a high reflectance in the spectral range considered. In practice, it is preferable to choose a reflective surface having a reflectance greater than 80% in the spectral range between 0.5 and 2 ⁇ m, this which can be obtained at a reasonable cost in particular with a polished aluminum surface, or if necessary with a silver or gold surface.
  • the reflectance of the primary reflectors is very high, preferably greater than 90% in the spectral range between 0.5 and 2 ⁇ m.
  • the primary reflector of each of the infrared radiation electric lamps is made of silver or gold.
  • the primary reflector of each of the infrared radiation electric lamps is, in section along a section plane perpendicular to the direction of progression, parabolic, or arcuate. ellipse or circle.
  • the radiation source is preferably located at the level of a focal point of the parabola or of the ellipse or of the center of the arc of a circle.
  • Halogen incandescent lamps emitting in the near infrared may in particular be chosen as the source of radiation.
  • the number of electric lamps with infrared radiation is greater than 2, and preferably greater than 4.
  • the secondary reflector surrounds the infrared radiation electric lamps.
  • the secondary reflector can then be constituted by a single piece without cutouts.
  • the secondary reflector may extend between the infrared radiation electric lamps. In this case, it is necessary to provide cutouts or stampings in the secondary deflector to accommodate the electric lamps with infrared radiation.
  • the transport vehicle of the heating module comprises means for lifting the portion of the rail located in the heating zone with respect to the railway track, and means for positioning the portion of the rail after supply of heat to a sleeper of the railway track and to fix the portion of the rail to the sleeper.
  • the transport vehicle of the heating module comprises means for lifting the portion of the rail located in the heating zone relative to the track, and means for positioning the portion of the rail after supplying heat to the front crosspiece to fix the portion of the rail on the sleeper.
  • raising the portion of the rail in the heating zone makes it possible to surround the rail better by heating it not only from above, but also from the sides, and if necessary from below, to standardize the heat input around the rail portion and minimize losses.
  • the fact that the heating zone is remote from the track, and in particular from the sleepers, makes it possible to implement, where appropriate, a high heating power, without risk to the track.
  • the heating module comprises at least two heating units aligned along the direction of progression to define the heating zone.
  • the heating module is provided with guide means for guiding the portion of the rail in the heating zone of the guided heating module, the guide means preferably comprising rollers rolling on the portion of the rail.
  • the heating power will have to be modulated according to the external conditions to obtain a desired setpoint temperature for the rail.
  • the plurality of electric infrared radiation lamps comprises at least two electric infrared radiation lamps, preferably at least four electric infrared radiation lamps, and particularly preferably more.
  • the number of electric lamps with infrared radiation activated can be modulated according to one or more control parameters.
  • the movement of the transport vehicle of the heating module in the laying direction is carried out without stopping.
  • the invention can be implemented in particular for the first laying of a new track, or for renewal or renovation. In particular, and according to a preferred aspect of the invention.
  • FIG. 1 On the figure 1 is illustrated an overall view of a renewal site of a railway line 2 in which one proceeds, by means of a work train 4 (partially shown), to the removal of old rails 6 (front sector ) and old sleepers 8 and their replacement with new sleepers 10 and new rails 12, all continuously as the train advances in the laying direction 100.
  • the work train 4 comprises wagons 16 resting on bogies 18, 20 running on the old rails 6 in the front part of the work train 4 and on the new rails 12 in the rear part of the work train 4.
  • a middle part of the work train 4 rests on caterpillars 22 which, in the absence of rails on track 2 in this part of the site, run directly on the old sleepers 8 before they are removed.
  • pre-neutralization or "neutralization”.
  • the new or renovated section of rail to be laid 12 is brought to a set temperature in a conditioning zone 28 located in front of and close to its fixing zone 30 on one or more sleepers 10.
  • this adjustment includes heating of the rail, the conditioning zone 28 then being a heating zone .
  • the heating device 32 comprises at least one heating module 34 carried by one of the wagons 16 of the work train 4.
  • Each heating module is composed of at least one, and preferably, as illustrated in the picture 3 , of at least two heating units 36, delimiting an elongated heating zone 28 located at a distance from the track and oriented along a direction of progression 200, preferably parallel to the laying direction 100 of the work train 4.
  • the zone heater 28 is open at a front end 38 and at a rear end 40 so as to allow a portion of the rail 12 to enter through one end 38 and exit through the other 40.
  • the two heating units 36 are arranged one behind the other along the heating zone, and each at least partially surrounds the heating zone 28.
  • Each heating unit 36 comprises several infrared radiation electric lamps 42 distributed around the periphery of the heating zone 28 and oriented towards the heating zone 28.
  • Each of the electric lamps 42 comprises a tube 44 oriented parallel to the direction of progression 200 and containing at least one filament 46.
  • the filament 46 constitutes a radiation source capable of emitting near infrared radiation, having a maximum power spectral density for a wavelength less than 2 ⁇ m, preferably less than 1.4 ⁇ m, very preferably less than 1.2 ⁇ m.
  • An inner concave face of the tube is lined with a high reflectivity material constituting a primary reflector 48, oriented to reflect the radiation emitted by the radiation source 46 towards the heating zone 28, the filament or filaments 46 being placed between the reflector primary reflector 48 and the heating zone 28, directly opposite the heating zone 28.
  • the primary reflector can have, in section by a plane perpendicular to the direction of progression, a constant radius of curvature. However, according to different embodiments, use will be made of a reflector having a parabolic, elliptical or multi-focus profile in section by a plane perpendicular to the direction of progression 200.
  • the filament 46 then preferably passes through the focus of the parabola or of the ellipsis.
  • the infrared radiation electric lamps 42 are contiguous or arranged at a distance from each other, and each extend parallel to the direction of progression 200.
  • Each heating unit 36 further comprises a secondary reflector 50 having a concave cylindrical reflecting surface in polished aluminum, which surrounds the heating zone 28 and the electric infrared radiation lamps 42.
  • the secondary reflector 50 can be a complete cylinder completely surrounding the heating zone 28. Alternatively, if it is desired to retain access to the rail for its guide, it may be a portion of cylinder covering, in a plane of section perpendicular to the direction of progression 200, an angle ⁇ greater than 180°, and preferably greater than 240°.
  • the radius of curvature of the secondary reflector 50 in a section plane perpendicular to the direction of progression, and preferably between 70mm and 160mm.
  • the length of the infrared radiation electric lamps 42 and the secondary reflector 50, measured parallel to the direction of progression 200, is preferably greater than 80cm.
  • Guide means 52 are provided at the inlet 38 and at the outlet 40 of the heating zone 28 of the heating device to ensure the guiding of the rail 12 in the heating zone 28.
  • the portion of the rail 12 passing through the heating zone 28 is raised, that is to say located vertically at a distance above its final position at the end of the laying process.
  • the heating module 34 can itself be provided with one or more actuators 54 or with a passive positioning mechanism to ensure its correct positioning relative to the rail 12, and to compensate for variations in the positioning of the transport vehicle 16 of the units heating 36 relative to the desired trajectory of the track.
  • the guide means 52 include rollers rolling on the rail 12 and supporting the heating module 34 if necessary.
  • Temperature sensors 56 are positioned at the inlet 38 of the heating zone 28, inside the heating zone 28 and at the outlet 40 of the heating zone 28, and if necessary directly near the fixing zone 30. These temperature sensors 56 are connected to a control unit 58 illustrated in the figure 5 , which receives signals from other sensors 60 such as, for example: a speed sensor of the transport vehicle 16 heating units 36, a speed sensor of the rail to be fixed, an ambient temperature sensor, a pressure sensor atmospheric, and/or an ambient humidity sensor.
  • sensors 60 such as, for example: a speed sensor of the transport vehicle 16 heating units 36, a speed sensor of the rail to be fixed, an ambient temperature sensor, a pressure sensor atmospheric, and/or an ambient humidity sensor.
  • the control unit 58 is thus able to measure, estimate or calculate one or more of the following parameters: a temperature of the portion of the rail to be fixed before heating, a temperature of the portion of the rail to be fixed after heating, a temperature of the portion of the rail to be fixed during heating, an external ambient temperature, a speed of movement of the transport vehicle of the heating units 16, a speed of movement of the rail relative to the heating device, a quantity of heat transmitted to the portion of the rail by the heating device.
  • control unit 58 contains in memory a setpoint temperature which may have been entered or programmed, and is representative of the "pre-neutralization” or “neutralization” temperature. sought in the fixing zone 30, which allows, if necessary, a determination of a difference between the setpoint temperature and a measured temperature of the portion of the rail to be fixed before heating, of a difference between the setpoint temperature and a measured temperature of the portion of the rail to be fixed after heating, or of a difference between the setpoint temperature and a measured temperature of the portion of the rail to be fixed during heating.
  • control unit 58 is connected to a power source (source of alternating or direct current or voltage) 62 associated with a modulation device 64 to modulate the electric power supply of the infrared radiation electric lamps 42.
  • each electric lamp with infrared radiation 42 relatively continuously in electric power, over a range around a nominal value, for example between 10% and 100% of the maximum value, by varying the amplitude and/or the frequency of the current and/or of the supply voltage at the level of the modulation device 58. Outside this modulation range, greater variations can be obtained by carrying out the complete extinction of certain lamps 42 , or even a complete heating unit 36 .
  • the rail to be fixed 12 moves, with respect to the heating device 28, in the opposite direction, and is guided so that at all times a raised portion of the rail to be fixed 12 crosses the heating zone 28. If necessary, the positioning of the heating module 34 is adjusted thanks to the actuators 54 or to the positioning mechanism. It is ensured that the infrared radiation electric lamps 42 are close to the portion of the rail to be fixed 12, preferably at a distance less than 20cm, preferably less than 10cm, but without contact.
  • the control unit 54 determines by a calculation algorithm, depending on all or part of the parameters discussed previously, the number of electric lamps with infrared radiation 42 and/or the electric power necessary for heating the rail to be fixed 12.
  • the infrared radiation in the near infrared By concentrating the infrared radiation in the near infrared to be in a field of strong absorption of the radiation by the rail, and by arranging the secondary reflector so as to reflect towards the heating zone at least 50% of the unabsorbed radiation, one considerably increases the performance of the device.
  • the infrared radiation lamps By arranging the infrared radiation lamps at a short distance from the central axis of the heating zone, and around the heating zone, the transfer of heat by convection is limited.
  • the movement of the transport vehicle of the heating units in the laying direction is carried out without stopping, at a speed in practice greater than 30 mm/s, preferably greater than 100 mm/s.
  • Each of the electric lamps may comprise more than one filament. It is possible in particular to use so-called twin infrared radiation electric lamps, comprising two adjoining tubes and a common primary reflector, as illustrated in the figure 6 .
  • the secondary reflector may be located at the same distance from the central axis of the heating zone as the lamps and extend between the lamps so as to constitute with the primary deflectors a quasi-continuous reflecting surface, from which the radiation cannot escape.
  • a secondary reflector 50 can be provided, the wall of which is provided with cutouts 150 to embed the infrared radiation electric lamps 42, as illustrated in the figure. figure 7 .
  • a secondary deflector 50 whose wall is provided with housings 250 formed for example by stamping, to house the electric lamps with infrared radiation 42, as illustrated in the figure 8 .
  • the number of electric infrared radiation lamps 42 and their positioning in each heating unit 36 can vary. It is possible in particular to take advantage of the lifting of the portion of the rail 12 passing through the heating zone 28 to direct at least part of the thermal radiation so as to reach the lower face of the rail, as illustrated in the figures. figures 7 and 8 . In this regard, provisions. It is also advantageous to have several heating units 36 arranged in a row in the longitudinal direction of advancement of the vehicle, as illustrated in the picture 3 , or even several heating modules 34 as illustrated in the figure 2 , to allow gradual heating in several stages or to achieve greater heating power.
  • the heating modules 34 located in a row can be directly adjacent or separated by an isothermal insulation section. They can also be separated by a stretch in the open air.
  • the transport vehicle for the heating module may consist of a wagon 16 of the work train 4. It may also be an autonomous vehicle on wheels or on tracks moving along the track.
  • only some of the electric lamps with infrared radiation 42 can be equipped with a modulation device 64.
  • the modulation devices 64 are not proportional, but operate in all or nothing, to turn off or turn on the electric lamps with infrared radiation 42 in number corresponding to the needs. It is also possible to envisage a pulsed mode of operation, in which some of the infrared radiation electric lamps 42 are switched on intermittently. It is also possible to envisage articulating the heating units 36 so as to be able to move them quickly away from the heating zone 28 when it is desired to reduce the quantity of heat transmitted to the rail to be laid 12.
  • the direction of progression 200 of the rail 12 in the heating zone 28 can be slightly inclined relative to the direction of laying 100, while remaining generally parallel to a longitudinal vertical plane.
  • the heating operation of the rail to be fixed 12 can take place while the rail to be fixed 12 is already placed on the sleepers.
  • the method of heating the rails which was described previously for a renovation of the railway track with replacement of the rails, also applies to a renovation of the track with the replacement of the old rails, or for a first laying.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Control Of Resistance Heating (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Resistance Heating (AREA)
  • Railway Tracks (AREA)
EP20701656.9A 2019-02-21 2020-01-30 Dispositif mobile de chauffage d'un rail de voie ferrée par lampes électriques à rayonnement infrarouge Active EP3927888B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1901736A FR3093115B1 (fr) 2019-02-21 2019-02-21 Dispositif mobile de chauffage d’un rail de voie ferrée par lampes électriques à rayonnement infrarouge et procédé de chauffage associé
PCT/EP2020/052352 WO2020169319A1 (fr) 2019-02-21 2020-01-30 Dispositif mobile de chauffage d'un rail de voie ferrée par lampes électriques à rayonnement infrarouge et procédé de chauffage associé

Publications (3)

Publication Number Publication Date
EP3927888A1 EP3927888A1 (fr) 2021-12-29
EP3927888B1 true EP3927888B1 (fr) 2023-06-07
EP3927888C0 EP3927888C0 (fr) 2023-06-07

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EP20701656.9A Active EP3927888B1 (fr) 2019-02-21 2020-01-30 Dispositif mobile de chauffage d'un rail de voie ferrée par lampes électriques à rayonnement infrarouge

Country Status (11)

Country Link
US (1) US20220042251A1 (pt)
EP (1) EP3927888B1 (pt)
CN (1) CN113661293B (pt)
AU (1) AU2020225236A1 (pt)
BR (1) BR112021015761A2 (pt)
CA (1) CA3130407A1 (pt)
ES (1) ES2953939T3 (pt)
FR (1) FR3093115B1 (pt)
PL (1) PL3927888T3 (pt)
WO (1) WO2020169319A1 (pt)
ZA (1) ZA202105428B (pt)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114606815A (zh) * 2022-04-24 2022-06-10 沈阳铁路信号有限责任公司 一种钢轨加热方法及系统

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6167719A (ja) * 1984-09-11 1986-04-07 Nippon Kokan Kk <Nkk> レール継目溶接部熱処理装置
GB8626051D0 (en) * 1986-10-31 1986-12-03 Seguin H J J Laser surface hardening of rails
CH689643A5 (fr) * 1994-02-18 1999-07-30 Speno International Installation pour le reprofilage des rails d'une voie ferrée.
JP2000080601A (ja) * 1998-09-07 2000-03-21 Railway Technical Res Inst レール加熱装置
US6308635B1 (en) 1998-09-24 2001-10-30 Kershaw Manufacturing Company Rail heating module and assembly
CN1291108C (zh) * 2002-01-22 2006-12-20 张准胜 铁路轨道激光维修车
CN102296495B (zh) * 2011-05-25 2013-01-23 中铁二十局集团第四工程有限公司 大温差、强风沙条件下长钢轨铺设及焊接施工工艺
CN102505589B (zh) * 2011-11-02 2015-01-07 中铁上海工程局集团有限公司 便携式钢轨焊接接头中高频电感应加热正火装置和方法
JP6457857B2 (ja) * 2015-03-27 2019-01-23 東日本旅客鉄道株式会社 レール交換装置
FR3020073B1 (fr) * 2015-07-27 2017-01-13 Matisa Materiel Ind Sa Procede de renouvellement de voies ferrees et dispositif pour sa mise en oeuvre
CN106834660B (zh) * 2015-12-03 2018-09-18 上海工程技术大学 一种线路钢轨焊接接头中频淬火控制方法
FR3066508B1 (fr) * 2017-05-22 2021-02-12 Matisa Materiel Ind Sa Procede de pose d’un rail de voie ferree, comportant un chauffage du rail, et train de travaux pour la mise en œuvre du procede de pose

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Publication number Publication date
BR112021015761A2 (pt) 2021-10-26
FR3093115B1 (fr) 2022-07-15
US20220042251A1 (en) 2022-02-10
CN113661293B (zh) 2023-09-01
WO2020169319A1 (fr) 2020-08-27
EP3927888A1 (fr) 2021-12-29
CA3130407A1 (fr) 2020-08-27
EP3927888C0 (fr) 2023-06-07
PL3927888T3 (pl) 2023-09-25
CN113661293A (zh) 2021-11-16
FR3093115A1 (fr) 2020-08-28
AU2020225236A1 (en) 2021-08-26
ES2953939T3 (es) 2023-11-17
ZA202105428B (en) 2022-08-31

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