EP3575178A1 - Hindernisablenker für ein schienenfahrzeug - Google Patents

Hindernisablenker für ein schienenfahrzeug Download PDF

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Publication number
EP3575178A1
EP3575178A1 EP18305679.5A EP18305679A EP3575178A1 EP 3575178 A1 EP3575178 A1 EP 3575178A1 EP 18305679 A EP18305679 A EP 18305679A EP 3575178 A1 EP3575178 A1 EP 3575178A1
Authority
EP
European Patent Office
Prior art keywords
obstacle
support member
obstacle deflector
deflector
carbodyshell
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
EP18305679.5A
Other languages
English (en)
French (fr)
Other versions
EP3575178B1 (de
Inventor
Michael Boos
Siegfried BRENDEL
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.)
Alstom Transport Technologies SAS
Original Assignee
Alstom Transport Technologies SAS
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 Alstom Transport Technologies SAS filed Critical Alstom Transport Technologies SAS
Priority to PL18305679T priority Critical patent/PL3575178T3/pl
Priority to EP18305679.5A priority patent/EP3575178B1/de
Publication of EP3575178A1 publication Critical patent/EP3575178A1/de
Application granted granted Critical
Publication of EP3575178B1 publication Critical patent/EP3575178B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F19/00—Wheel guards; Bumpers; Obstruction removers or the like
    • B61F19/04—Bumpers or like collision guards

Definitions

  • the present invention relates to an obstacle deflector for a rail vehicle.
  • An obstacle deflector for a rail vehicle also known as snowplough or pilot, is a device which is usually placed at the front end of a carbodyshell of a rail vehicle, such as a train, and is arranged to deflect possible obstacles present on the railway track that might otherwise derail the train when the latter is travelling along the track. Obstacles should be deflected as early as possible because otherwise they might damage the train, thus resulting in unnecessary maintenance costs.
  • Figure 1 shows a schematic lateral view of a train 1 having an obstacle deflector 2 which is fixed to the front end of its carbodyshell 4 and is capable of performing the primary task of removing obstacles from the railway track, thus protecting the train 1 from derailment.
  • this obstacle deflector 2 is not capable of protecting the carbodyshell 4 from damages, because it happens quite frequently that obstacles firstly hit the cover panel of the carbodyshell 4 and only later they are pushed away by the obstacle deflector 2.
  • an obstacle deflector designed according to the EN 15227 standard has usually to be installed in longitudinal direction behind or in a back position below the energy absorber elements, also known as energy dissipation devices, which are fixed, in known manner, to the front end of the carbodyshell 4 and are arranged to absorb the impact energy in case of impacts with obstacles which may be present on the path of the train 1.
  • energy absorber elements also known as energy dissipation devices
  • the obstacle deflector 2 is usually placed behind them because otherwise, due to the fact that it is a fixed element, in case of crash events it would restrain the energy absorber elements, not allowing their proper functioning.
  • the obstacle deflector of the present invention is capable of both removing obstacles present on a railway track and protecting the carbodyshell of a train without requiring modifications to the energy absorber elements usually present on the front end of a carbodyshell of a train.
  • the obstacle deflector of the present invention thanks to the fact that of being movable, can be placed in front of the energy absorbers because during a crash scenario it is arranged to slide back without affecting the operation of the energy absorbers.
  • the obstacle deflector according to the present invention has the same functionalities as any other fixed mounted deflector of the prior art according to the EN 15227 standard.
  • Figure 2 shows a schematic lateral view of a train 10 having an obstacle deflector 12 fixed to the front end of its carbodyshell 14 in a forward position with respect to the prior art, so that obstacles first collide with the obstacle deflector 12 and then are moved away from the railway track.
  • the obstacle deflector 12 is mounted in an extended position so as to project forward beyond energy absorber elements of the train 10: when an obstacle approaches the train 10, it firstly impacts the obstacle deflector 12.
  • the obstacle deflector 12 pushes the obstacle away from the railway track, otherwise, it moves to a retracted position wherein it does no more project beyond the energy absorber elements.
  • Figure 3 shows a lateral view of the train 10 with its obstacle deflector 12 placed under energy absorber elements 22, and another opposed train 10' with its obstacle deflector 12' placed under its energy absorber elements 22'.
  • the respective obstacle deflectors 12 and 12' move from the extended position shown in figure 3 , wherein they project beyond the corresponding energy absorber elements 22 an 22', to the retracted position, wherein they do not project beyond the corresponding energy absorber elements 22 an 22', as disclosed herein below in detail.
  • the obstacle deflector 12 In order to withstand accidents with obstacles having an impact force level below a threshold, for example equal to 300kN, as indicated in the scenarios disclosed in the EN 15227 standard, the obstacle deflector 12 is positioned, as above indicated, so as to project beyond the energy absorber elements 22, while having at the same time the stability and stiffness required by EN 15227 standard. The obstacle deflector 12 is however able to move backwards to the retracted position if the impact force level exceeds said threshold.
  • a threshold for example equal to 300kN
  • the obstacle deflector 12 of the present invention includes a support member 18 having a buckling-free system, for example a sledge 16 (e.g. a Coradia LINT, a light regional train of Alstom TD), and a shield element 20 fixed to a front end 16a of the sledge 16.
  • the sledge 16 is carried by the support member 18 so as to be slideably movable with respect to the support member 18 between a first position represented on figures 4 and 5 , the above-cited extended position, and a second position represented on figure 6 , the above-cited retracted position.
  • the sledge 16 and the shield 20 together form a sub-assembly 17, movable with respect to support member 18.
  • the support member 18 is arranged to be fixed at a proximal end 18a to a front end of the carbodyshell 14 of the train 10.
  • the sledge 16 is arranged to slide between the extended position, wherein the shield element 20 is spaced from a distal end 18b of the support member 18 and is arranged to push away obstacles placed in front of the train 10, and the retracted position, wherein the shield element 20 is in contact with such distal end 18b of the support member 18.
  • the sub-assembly 17, and thus the sledge 16 can slide into the lower area of the grp part of the carbodyshell 14, thus moving from the extended position to the retracted position.
  • the sledge 16 and the support member 18 are connected by tearing elements 21, such as breakable screws, one of which is represented in an exploded position on figure 5 .
  • tearing elements 21 such as breakable screws, one of which is represented in an exploded position on figure 5 .
  • Two energy absorber elements 22, placed side by side above the obstacle deflector 12, are arranged to be fixed at a proximal end 22a to the carbodyshell 14 of the train 10 without being in contact with the obstacle deflector 12, and the shield element 20 is mounted so that, in the extended position, it project forwards beyond distal ends 22b of the energy absorber elements 22. In the retracted position, the shield element 20 does not project anymore beyond the distal end 22b of the energy absorber elements 22, so that it does not interfere with an obstacle if this obstacle interacts with the energy absorber elements 22.
  • Energy absorber elements 22 are distributed on either sides of a central longitudinal axis X14 of carbodyshell 14. For the sake of simplicity energy absorber elements 22 are not represented on figures 5 and 6 .
  • Figure 5 is a further perspective view of the obstacle deflector 12 of figure 4 with its sub-assembly 17 in the extended position; while figure 6 is a perspective view of the obstacle deflector 12 of figure 4 with its sub-assembly 17 in the retracted position.
  • Figure 7 is a perspective view of an alternative embodiment of the obstacle deflector 12 of the present invention which includes two lateral rods 24 and a supporting member or box 26 arranged to host said rods 24.
  • Two energy absorber elements 22 are distributed on either sides of a central longitudinal axis X14 or carbodyshell 14. For the sake of simplicity energy absorber elements 22 are not represented on figures 8 and 9 .
  • tearing elements 21 are screws or bolts.
  • the shield element 20 is fixed to a front end 24a of the rods 24.
  • the rods 24 are arranged to slide between the extended position, wherein the shield element 20 is spaced from a distal end 26b of the supporting member 26 and is arranged to push away obstacles placed in front of the train 10, and the retracted position, wherein the shield element 20 is in contact with such distal end 26b of the supporting member 26.
  • Figure 8 is a further perspective view of the obstacle deflector 12 of figure 7 with its sub-assembly 17 in the extended position
  • figure 9 is a perspective view of the obstacle deflector 12 of figure 7 with its sub-assembly 17 in the retracted position.
  • the obstacle deflector 12 comprises also an anticlimber known per se, in order to avoid to slide vertically when compressed to the retracted position and to remain in a horizontal position.
  • the tearing elements 21 break and the sub-assembly 17 moves from the extended position to the retracted position.
  • the tearing elements 21 such as the above cited bolts or screws are common elements which shall break in a controlled manner.
  • the tearing elements 21 have to break at the predefined impact force level threshold.
  • the threshold of the impact force is higher than the level of forces occurring during one impact against a big obstacle, and therefore higher than the requirements provided by the fourth scenario of the EN15227 standard.
  • the obstacle deflector 12 can remain in its retracted position without losing its functionality while, in an alternative embodiment, it is locked in the retracted position so as not to slide, but after a crash this should not be a real problem anymore.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Dampers (AREA)
EP18305679.5A 2018-06-01 2018-06-01 Hindernisablenker für ein schienenfahrzeug Active EP3575178B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL18305679T PL3575178T3 (pl) 2018-06-01 2018-06-01 Odchylacz przeszkód dla pojazdu szynowego
EP18305679.5A EP3575178B1 (de) 2018-06-01 2018-06-01 Hindernisablenker für ein schienenfahrzeug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18305679.5A EP3575178B1 (de) 2018-06-01 2018-06-01 Hindernisablenker für ein schienenfahrzeug

Publications (2)

Publication Number Publication Date
EP3575178A1 true EP3575178A1 (de) 2019-12-04
EP3575178B1 EP3575178B1 (de) 2021-08-04

Family

ID=62567576

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18305679.5A Active EP3575178B1 (de) 2018-06-01 2018-06-01 Hindernisablenker für ein schienenfahrzeug

Country Status (2)

Country Link
EP (1) EP3575178B1 (de)
PL (1) PL3575178T3 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE121726C (de) *
DE166218C (de) * 1904-02-14 1905-12-11 Ludwig Quolilin Durch das hindernis auszulosende, durch enen presskolben vorschnellbare strassenbahnschutzvorrichtung
FR467678A (fr) * 1914-01-24 1914-06-17 John Henry Ferguson Perfectionnements aux paniers ramasse-corps
US3848914A (en) * 1971-12-15 1974-11-19 Sperry Rand Corp Motor shiftable shock absorbing bumper
DE102015205283A1 (de) * 2015-03-24 2016-09-29 Bombardier Transportation Gmbh Frontanordnung eines Schienenfahrzeugs sowie Verfahren zum Betreiben und Herstellen des Schienenfahrzeugs

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE121726C (de) *
DE166218C (de) * 1904-02-14 1905-12-11 Ludwig Quolilin Durch das hindernis auszulosende, durch enen presskolben vorschnellbare strassenbahnschutzvorrichtung
FR467678A (fr) * 1914-01-24 1914-06-17 John Henry Ferguson Perfectionnements aux paniers ramasse-corps
US3848914A (en) * 1971-12-15 1974-11-19 Sperry Rand Corp Motor shiftable shock absorbing bumper
DE102015205283A1 (de) * 2015-03-24 2016-09-29 Bombardier Transportation Gmbh Frontanordnung eines Schienenfahrzeugs sowie Verfahren zum Betreiben und Herstellen des Schienenfahrzeugs

Also Published As

Publication number Publication date
PL3575178T3 (pl) 2022-01-10
EP3575178B1 (de) 2021-08-04

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