Patent ID: 8979083
Filing Date: 2015-03-17
Classification: E01B

Abstract:
1. A welding unit for welding two rails of a track, the welding unit comprising: guides; displacement cylinders; two unit parts which are movable towards one another in a longitudinal direction of the rails along said guides by means of said displacement cylinders; clamping jaws with contact surfaces intended for application to a rail web, each of said clamping jaws having a sliding surface, spaced from said contact surfaces in a transverse direction of the rails, said sliding surface being curved with respect to a cross-section extending perpendicularly to a neutral axis of the rails in a shape of a circular arc, each of said two unit parts equipped with said clamping jaws; and jaw mounts fixing said clamping jaws and each having a mount sliding surface being curved complementary to said sliding surface of said clamping jaws, so that said clamping jaws are movable along said sliding surface relative to said mount sliding surface of said jaw mounts.