E.o. Paton Electric Welding Institute of the National Academy of Sciences of Ukraine

E.p. Paton Electric Welding

Valerii G Krivenko

Sergei I Kuchuk-Yatsenko

Fedor K Porkhun

Andrey N Levchuk

Sergey I Kuchuk-Yatsenko

Oleksandr V Didkovskiy

Alexandr P Miroshnickenko

Victor Gr Shkurko

Fedor A Andrienko

Yaroslav I Mikitin

Mikhail V Bogorskii

Vassilii A Sakharnov

Oleksandr K Kharchenko

Victor N Golovachev

A machine for the flash butt welding of rails is provided. The machine comprises electric contacts yokes having controlled drives and further comprise holes through which guide pins are passed.

Machine for flash-butt welding of rails

A machine for flash-butt welding of rails, incorporates two tong-type clamping devices made in the form of two two-arm levers carried by a common central axle with insulation from each other and capable of being displaced along the axle relative to each other by two flashing-upsetting hydraulic cylinders connecting them and having bimetal current-carrying rods. Each of the two-arm levers is hinged at one end to the rod or the clamping hydraulic cylinder case, respectively, and the other end is fitted with the clamping and current-carrying jaws. Two welding transformers built into the hollow two-arm levers of one of the two tong-type clamps are joined by current-carrying jumpers through the current-carrying part of the rods of the flashing-upsetting hydraulic cylinders to the current-carrying clamping jaws. A clamping hydraulic cylinder is made with a hydraulic intensifier built into its rod. A reflux valve with a calibrated spring and shank is built into the plunger-rod of the hydraulic intensifier, and a pressure valve is mounted on the hydraulic intensifier cover-lug, this valve being connected by the internal valves with the hydraulic intensifier cavities. The flashing-upsetting hydraulic cylinders being made in the form of tandem-cylinders, wherein two pistons separated by a partition are mounted on a common rod in each hydraulic cylinder.

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Kyiv, Ukraine

Valerii G Krivenko