EP4159921A1 - Verfahren und zug zum ersetzen von schienen - Google Patents

Verfahren und zug zum ersetzen von schienen Download PDF

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Publication number
EP4159921A1
EP4159921A1 EP21200577.1A EP21200577A EP4159921A1 EP 4159921 A1 EP4159921 A1 EP 4159921A1 EP 21200577 A EP21200577 A EP 21200577A EP 4159921 A1 EP4159921 A1 EP 4159921A1
Authority
EP
European Patent Office
Prior art keywords
rails
new
rail
welded
train
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.)
Pending
Application number
EP21200577.1A
Other languages
English (en)
French (fr)
Inventor
Antoine Scheuchzer
Martin BÜRGIN
Urbano Zanardi
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.)
Scheuchzer SA
Original Assignee
Scheuchzer SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Scheuchzer SA filed Critical Scheuchzer SA
Priority to EP21200577.1A priority Critical patent/EP4159921A1/de
Publication of EP4159921A1 publication Critical patent/EP4159921A1/de
Pending legal-status Critical Current

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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
    • E01B29/00—Laying, rebuilding, or taking-up tracks; Tools or machines therefor
    • E01B29/42—Undetachably joining or fastening track components in or on the track, e.g. by welding, by gluing; Pre-assembling track components by gluing; Sealing joints with filling components

Definitions

  • the present invention relates to the field of maintenance of railway tracks. More specifically, the present invention relates to the field of replacing worn rails of a railway track with new rails.
  • the worn rail sections are freed by induction heating at a temperature between 25°C and 32°C, put in place and immediately fixed, the connection of the new rails to those of the existing track being carried out by means of alumino-thermal welding.
  • the worn rail sections are immediately reloaded onto wagons forming part of the works train, and at the end of the shift, the works train is released from the site to allow the track to be restored with running capacity at normal commercial speed.
  • the heating as well as the temperature of the treated rails can respectively be controlled and measured much more easily and more accurately than on the open track according to current non-mechanized systems.
  • Another advantage of the publication process EP 0 466 651 is that during the heating of the new rails, the old rails are detached and released, which again saves time.
  • the publication EP 0 835 712 describes a process for welding at least one line of new railway rails to replace the old rails, previously laid down on the track, by means of a machine running on the old rails, the machine being provided in particular with a welder by spark-forging, grinding means and gripping and guiding means for the new rails.
  • the publication EP 0 551 798 describes a device for the continuous substitution and neutralization of railway tracks.
  • the articulated vehicle serves to substitute and neutralize the rails of the railway tracks while it advances in the direction of the arrow at a constant continuous speed.
  • it is equipped with medium frequency induction heating tunnels to continuously heat the new rails to their neutralization temperature; this temperature which they must have during their attachment to the sleepers generally being around 25° C.
  • the new rails are first brought to the site, placed in the middle of the old track between the old rails and welded to form two continuous rows of rails. These rows of rails are lifted and guided through the heating tunnels as the vehicle advances.
  • the vehicle further comprises workstations making it possible respectively to detach and attach the fasteners of the old and new rails.
  • An object of the invention is to propose a method and a device considerably improving the known methods and devices, in particular those known from the publications FR 2 904 335 , EP 0 466 651 , EP 0 835 712 And EP 0 551 798 .
  • Another object of the present invention is to provide a method and a device by means of which the occupation time of the track is reduced to a minimum.
  • Another object of the present invention is to propose a method and a device by means of which the efficiency of the machines is optimized and the losses of time reduced or eliminated.
  • the known method of FR 2 904 335 in that the feeding of new rails is carried out not from the ground with individual rails previously deposited on the ground and assembled into long bars by welding, which involves additional operations and a loss of time, but by new rails supplied continuously from a single rail supply machine. Consequently, the provision of the new rails is not the subject of a specific and/or prior operation (for example the day before or just before the replacement work begins on the site) but on the contrary this supply is carried out directly and gradually in an operation integrated into the general process of replacing the track.
  • Another advantage is the time saving due to the elimination of a dedicated and preliminary operation for the temporary storage of the new rails on the track in anticipation of the substitution and their welding in long bars as described in FR 2 904 335 .
  • the present invention provides a gain of approximately two hours.
  • Another advantage of the present invention is that personnel are better protected due to the automation of the process steps.
  • Another advantage of the present invention is that after the substitution, the track allows traffic to travel at commercial speed.
  • all of the means of production is formed of a single construction train 10 which is transported in a single block on the construction site (known as a "block train”), see the figure 1 which also shows the working direction of said train.
  • the construction train with all its components is approximately 515 m long.
  • FIG. 3 illustrates in detail the welding train 100 of the new rails.
  • This train 100 comprises in particular a traction device 110, wagons 120 for transporting new rails 20 (normally the train comprises six transport wagons 120 forming a storage train but the picture 3 represents only one with a section for simplicity), a gantry 130 moving on a transport wagon 129 of the gantry and on the wagons 120 for transporting the new rails, and a welding machine 140, 150 for welding the new rails and carrying in particular a welding head 151.
  • FIG. 4 illustrates in detail the six transport wagons 120 of new rails and the gantry 130 on its wagon 129.
  • the new rails 20 are loaded at the rear base on a dedicated composition, consisting for example of six rail transport wagons 120 provided with a rolling path for the gantry 130.
  • the gantry 130 for handling the rails is capable of moving on its 129 transport wagon and the (six) 120 transport wagons of the new 20 rails.
  • the transport wagons 120 are equipped with a track for the gantry 130 with removable connecting rails which are brought into working position by means of a remote control.
  • FIG 5 The storage of the new rails 20 is illustrated in figure 5 (in front view).
  • Each new unitary rail 20 is stored in each wagon 120 on a set of rollers 30 which ensure a longitudinal path of each new rail 20 without resistance.
  • the configuration of the rollers 30 notably guarantees the result of the release by heating.
  • This figure 5 illustrates a full stock of thirty new rails 20 but of course this is an illustrative example and the number of rails may be more or less than thirty.
  • a mechanism stows and secures the rails 20 on the wagons 120.
  • a remote control allows the unlocking of this device.
  • the handling gantry 130 is equipped with independent traction and two arms 131 fitted with grippers capable of gripping two new rails 20 (i.e. one new rail 20 per row) without damaging them and inserting them into a loading device between the rows of rails of the track.
  • Portico 130 is, for example, provided with a secure driver's cabin comprising two workstations and all the tasks are carried out from the cabin.
  • the transport wagon 129 of the gantry 130 ensures the guidance of the rails between the transport wagons 120 and the welding machine 150.
  • the handling gantry 130 picks up a pair of new rails 20 using two independent grippers on its arms 131.
  • each new rail extracted from stock is identified by the reference 21 once it has passed the reference point 133 in the figures which is located at the beginning of the wagon 129 of the gantry 130.
  • the gantry 130 then introduces each rail 21 on the wagon 129.
  • Each rail 21 is led in guides which hold it in the working jig and which allow them to be placed on the ground on the rolls deposited previously through a chute for loading the rails on the rolls deposited. These guides are provided with rollers allowing free longitudinal movement of each rail 21.
  • the figures 6A to 6E illustrate the rollers 31-36 incorporated in the welding train and implemented for this guidance following each other, starting from the wagon 129 of the gantry, point 133, to the laying on rollers 36, 36 'themselves same placed on the ground between the sleepers in the center of the track before welding, at point D (see figure 7 ). More precisely the roller 31 presses on the head of the rail 21 and the rollers 32 guide the shoe of the rail 21, the roller 33 with edges makes a lateral guide of the shoe of the rail 21, the vertical rollers 34 and 35 of the lateral guides and the roller 35' a guide under the slider of rail 21.
  • a robotic device associated with an automated storage system, places the rollers 36, 36' between the sleepers, in the center of the track. These rollers 36 are intended to receive the rails 21 at point D and which will be welded to the rear of the welding machine.
  • rollers 36, 36' eliminates manual operations on the ground.
  • rollers 36, 36' Beforehand, an automatic system will have placed the rollers 36, 36' between the sleepers in the center of the track.
  • the purpose of these rollers is to ensure the longitudinal floating of the rails from the position where the welding is carried out to the wagons 120 transporting the new rails, which allows the expansion, caused by the welding and the release, to be reflected without constraint.
  • the fact that the new rails 21 are arranged on these supports 36,36' also has the advantage of facilitating the entry and processing of the rails 21, in particular in curves, both for welding and for introduction into the machine. substitution and release.
  • the welding train comprises a wagon 140 for guiding the new rails 21 and for depositing the rollers 36, 36' on the ground which is described with reference to figure 7 .
  • the guides in this wagon 140 correspond to the figures 6A to 6E as described above.
  • the bottom drawing illustrates the track seen from above, on the left the two outer rails being the new rails 21 moved by the gantry 130 after point 133, the two inner rails being the old rails 25 intended to be replaced and on which the train is rolling.
  • the new rails are on the gantry car 130 and located above track 25, shown with a gauge greater than that of the track, while that on the far right, the new rails 21 are laid on the ground, on the rollers 36,36' inside the track 25.
  • the laying on the ground of the new rails 21 occurs approximately in the zone D marked in there figure 7 for example at the level of the roller referenced 36' (identical to the rollers 36) through a chute 142.
  • the rolls 36 intended to be placed on the ground are distributed from the wagon 140, which includes a magazine for such rolls 36, and placed on the ground preferably at regular intervals between the crosspieces at the center of the lane.
  • the wagon 140 includes a distributor 141 of rolls 36 which deposits them on the ground before they receive the new rail 21 in position D ( figure 7 ).
  • the two machine parts 140-150 can work together or separately.
  • the rail supply machine ensures the transfer of the new rails 20 from the transport train 120 and their direct introduction into the welding machine 150.
  • Holding clamps grasp the pairs of rails to be welded: the rails 21, on the one hand, the long welded rails 22 placed on the rollers at the axis of the track, on the other hand.
  • the holding clamps precisely orient face to face the ends of the rails 21 to be welded, both in straightening and in leveling. They play a role in the geometric quality of the weld obtained, independently of the layout conditions (curves and slopes).
  • the welding machine 150 further comprises at the rear a first handling arm 152 which makes it possible to grasp the welded rails 22 and to move them if necessary.
  • the welding machine comprises means for deburring the shoe of the rail 22.
  • the deburring is carried out by an automatic device which grinds the side edges and the upper surfaces of the shoe after the welding operation before laying of the welded rail 22 to the ground.
  • the longitudinal axes of the rails 22 are free in order to allow the expansion of the rail for the releasing operation.
  • THE figures 8A to 8C illustrate an embodiment of deburring according to the present invention, the deburring means being mounted on workbenches of the welding head 151. More specifically, the figure 8A illustrates the deburring of the top of the shoe 23 of the welded rail 22, the figure 8B the deburring of the edges of the shoe 23 of the welded rail 22 and the Fig. 8C deburring the underside of the shoe 23 of the welded rail 22. Suitable grinding wheels 24 are implemented for this operation.
  • the welding train 110 - 150 is moved in the working direction (see the arrow pointing to the left in THE figure 3 And 7 For example). During this movement, the new welded rail 220 of each file (which extends onto the cars 120) slides on the rollers 30 of at least two cars 120 and is guided in the cars 129 and 140 as described above.
  • the gantry 130 then picks up a new free rail 20 for each row, brings it close to the free end of the new rail 22 which has been welded and moves it so that it follows this free end while the welding train 100 moves in the direction of work. It is therefore not necessary to attach a splice between these rails, which saves time.
  • the new free rail 21 is placed on the ground on the rollers 36,36' following the new welded rail 22 and (as illustrated in figure 7 ) the welding operation can be implemented between the end of the new welded rail 22 and the new free rail 21 which follows it directly. These operations are of course carried out for each lane of the track in parallel.
  • the direct feeding of the new rails 20 from the wagons 120 carrying said new rails 20 is very advantageous because it greatly simplifies the process and saves time.
  • the machine 200 includes storage areas adapted and capable of receiving the track material necessary for carrying out the stage. In particular, sufficient space is provided in the rear part for new and used fastening material. Side doors provide easy access and facilitate the loading and unloading of equipment, carried out at the rear base.
  • a robotic arm 202 positioned at the front of the machine, recovers the rolls 36 which are on the way and arranges them in a storage system. This development therefore eliminates any manual operation requiring the presence of employees on the track between the two machines and thus improves safety.
  • Arms 201 provided with guide clamps and positioned at the front of the machine ensure, if necessary, the handling of the new rails 22 from the center to the outside of the track, or vice versa.
  • the 300 train is able to transport rails up to 150 m long.
  • the track can be put back into commercial operation at line speed and up to 300 km/h.
EP21200577.1A 2021-10-01 2021-10-01 Verfahren und zug zum ersetzen von schienen Pending EP4159921A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21200577.1A EP4159921A1 (de) 2021-10-01 2021-10-01 Verfahren und zug zum ersetzen von schienen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21200577.1A EP4159921A1 (de) 2021-10-01 2021-10-01 Verfahren und zug zum ersetzen von schienen

Publications (1)

Publication Number Publication Date
EP4159921A1 true EP4159921A1 (de) 2023-04-05

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Family Applications (1)

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EP21200577.1A Pending EP4159921A1 (de) 2021-10-01 2021-10-01 Verfahren und zug zum ersetzen von schienen

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0466651A1 (de) 1990-07-13 1992-01-15 Scheuchzer S.A. Vorrichtung zur Auswechselung von Eisenbahnschienen
EP0551798A1 (de) 1992-01-14 1993-07-21 Scheuchzer S.A. Vorrichtung zur Auswechslung und Neutralisierung von Eisenbahnschienen
EP0835712A1 (de) 1996-10-11 1998-04-15 Scheuchzer S.A. Verfahren zum Schweissen mindestens eines Schienenstranges und Maschine zur Anwendung dieses Verfahrens
FR2904335A1 (fr) 2006-07-25 2008-02-01 Tso Sa "procede de substitution de rails sur une ligne a grande vitesse"

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0466651A1 (de) 1990-07-13 1992-01-15 Scheuchzer S.A. Vorrichtung zur Auswechselung von Eisenbahnschienen
EP0551798A1 (de) 1992-01-14 1993-07-21 Scheuchzer S.A. Vorrichtung zur Auswechslung und Neutralisierung von Eisenbahnschienen
EP0835712A1 (de) 1996-10-11 1998-04-15 Scheuchzer S.A. Verfahren zum Schweissen mindestens eines Schienenstranges und Maschine zur Anwendung dieses Verfahrens
FR2904335A1 (fr) 2006-07-25 2008-02-01 Tso Sa "procede de substitution de rails sur une ligne a grande vitesse"

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