MACHINE FOR OXYGEN CUTTING OF TUBES Russian patent published in 2002 - IPC

FIELD: gas-flame cutting of tubes, possibly cutting tubes of main gas pipeline. SUBSTANCE: machine includes mechanism for fixing cutter; said mechanism is arranged symmetrically relative to cross plane of cart with runners. Mechanism for tensioning flexible metallic belt has double-arm levers supporting tension rollers. Screw of tensioning mechanism is arranged over lengthwise axis of cart. Tightening members of tensioning mechanism are in the form of rollers mounted with possibility of rotation. Handle of drive unit may be in the form of flexible drive shaft. EFFECT: enhanced design of machine, high accuracy of cutting, increased useful life and improved labor condition. 2 cl, 3 dwg