A method and arrangement for rehabilitation of a ballast bed...

E - Fixed Constructions – 01 – B

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E01B 27/10 (2006.01)

Patent

CA 2625629

In a method for cleaning of a ballast bed (2) of a track (3) an upper layer (34) of the ballast is received by a front - with respect to the working direction - clearance apparatus (16) in a first working process (A) - as a function of the degree of contamination of the ballast bed - and is supplied to a first conveyor belt unit (27). In parallel with this, the rest of the ballast (25) is received by a rear - with respect to the working direction - clearance apparatus (20) and is supplied to a second conveyor belt unit (29), in order to carry it away for disposal. In a second working process (B) which can be carried out optionally, the ballast (25) is received exclusively by the rear clearance apparatus (20) and is diverted for cleaning to the first conveyor belt unit (27), with the front clearance apparatus (16) being in an out-of-use position. A diversion device (33) is provided for selective diversion of the ballast from the second to the first conveyor belt unit (29, 27).

Dans le cadre du procédé d'assainissement de ballastage (2) d'une voie ferrée (3) selon l'invention, une première phase de travail (A) consiste à prélever, selon le degré de salissure du ballastage, une couche supérieure (34) du cailloutis à l'aide d'un dispositif d'évacuation avant (16), par rapport au sens de travail, et à l'acheminer à un premier dispositif (27) à tapis roulant. Parallèlement, le reste du cailloutis (25) est prélevé par un dispositif d'évacuation arrière (20), par rapport au sens de travail et acheminé à un second dispositif (29) à tapis roulant pour évacuation et élimination. Dans une seconde phase de travail (B) exécutable en option le cailloutis (25) est exclusivement prélevé par le dispositif d'évacuation arrière (20) et acheminé à des fins de nettoyage au premier dispositif (27) à tapis roulant, le dispositif d'évacuation avant (16) étant alors en position de non-utilisation. Un dispositif d'aiguillage (33) est prévu pour acheminer le cailloutis au choix du second au premier dispositif (29, 27) à tapis roulant. (Fig.1 et 2)

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