Patent ID: 8907242
Filing Date: 2014-12-09
Classification: B23K,E01B

Abstract:
1. A machine for the flash-butt welding of rails, the machine comprising: two current-carrying clamping devices made in the form of two double-arm levers mounted on a common central axle and isolated one from another, displacement and upsetting hydraulic cylinders for clamping and displacement of parts being welded; two welding transformers built into the double-arm levers of one of the two clamping devices; current-carrying elements including rods of the displacement and upsetting hydraulic cylinders; electric contacts-yokes and current-carrying flexible jumpers, wherein the electric contacts-yokes have controlled drives, the upper part of each electric contact-yoke having holes through which guide pins are passed, and where the controlled drives cause the electric contacts-yokes to clamp and unclamp on the rods of the displacement and upsetting cylinders; and a retaining spring being fixed between a lateral surface of the electric contacts-yokes and a lateral wall of each of the two double-arm levers, wherein using the current-carrying flexible jumpers, the electric contacts-yokes with the controlled drive being connected to associated current-carrying clamping devices.