The invention relates to an assembly for automatic aligning of rails, comprising: —a first alignment system (10) suitable for placing on a first track element (70) on a first rail (100); —a second alignment system (20) suitable for placing on a second track element (70) on a second rail (200); and —a system for acquiring a position (30), comprising at least one position sensor, wherein the first alignment system (10) and/or the second alignment system (20) comprises an actuating system (51, 52) suitable for automatically adjusting a position of the first rail (100) and/or of the second rail (200) on the basis of a position measured by the acquisition system (30).
E01B 29/46 - Dispositifs pour maintenir, mettre en position ou presser l'une contre l'autre les extrémités de rails
B23K 37/04 - Dispositifs ou procédés auxiliaires non spécialement adaptés à un procédé couvert par un seul des autres groupes principaux de la présente sous-classe pour maintenir ou mettre en position les pièces
B23K 37/047 - Déplacement des pièces pour ajuster leur position entre les étapes de brasage, de soudage ou de découpage
2.
Moulding assembly for aluminothermic welding of rails and method for aluminothermic welding of rails
A moulding assembly for aluminothermic welding of metal rails includes at least one mould part configured to come into contact with at least one other mould part and rails to be welded to form a mould cavity in which the ends of the metal rails to be welded are arranged and into which a molten metal is cast to weld the metal rails, wherein each mould part comprises includes a seating configured to be placed in contact least one of the rails, the seating including a groove into which a sealing product made of intumescent material is applied.
The present invention relates in particular to a mold (M) for aluminothermic welding of a metal rail (1), which comprises at least two substantially identical pieces or shells (4), configured to be temporarily assembled opposite one another and on either side of said rail (1) to enclose the head (10), web (11) and foot (12) of this rail (1), each piece or shell (4) having an upper opening (43), which opens onto an internal cavity (44) bounded by walls (45, 46, 48) configured to enclose the head (10), the web (11) and the foot (12) of said rail (1), characterized by the fact that said internal cavity (44) comprises a compressible sealing coating (5) only against the walls (451, 46, 48) configured to enclose said web (11), foot (12) and underside of the head (10), with the exception of the rest of the head (10) and the underside of the foot (12).
E01B 31/15 - Enlèvement du métal des rails, joints de rails, ou plaques d'appui, p. ex. pour l'ébarbage des soudures, la remise en état des rails usés par rabotage ou limage
E01B 31/18 - Remise en état ou réparation sur place de parties usagées ou endommagées, p. ex. application de pièces intercalées, reconstruction des rails par soudageChauffage ou refroidissement sur place des parties, p. ex. pour réduire les intervalles des joints, pour durcir les rails
E01B 31/13 - Enlèvement du métal des rails, joints de rails, ou plaques d'appui, p. ex. pour l'ébarbage des soudures, la remise en état des rails usés par fraisage
B23K 101/26 - Rails pour chemins de fer ou similaires