Abstract

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).

IPC Classes  ?

• E01B 29/46 - Devices for holding, positioning, or urging together the rail ends
• B23K 37/04 - Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work
• B23K 37/047 - Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work moving work to adjust its position between soldering, welding or cutting steps

Abstract

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.

IPC Classes  ?

• B22D 19/04 - Casting in, on, or around, objects which form part of the product for joining parts
• B23K 23/00 - Alumino-thermic welding
• B23K 101/26 - Railway- or like rails
• B22D 19/00 - Casting in, on, or around, objects which form part of the product
• B22D 27/04 - Influencing the temperature of the metal, e.g. by heating or cooling the mould
• E01B 11/52 - Joints made by alumino-thermal welding

Abstract

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).

IPC Classes  ?

• B23K 23/00 - Alumino-thermic welding
• E01B 31/15 - Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails by planing or filing
• E01B 31/18 - Reconditioning or repairing worn or damaged parts on the spot, e.g. applying inlays, building-up rails by weldingHeating or cooling of parts on the spot, e.g. for reducing joint gaps, for hardening rails
• E01B 31/13 - Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails by milling
• B23K 101/26 - Railway- or like rails