FIELD: systems for removal of pipe lines from ground. SUBSTANCE: frame of track unpowered undercarriage is formed by transverse and longitudinal beams. Mounted on frame are two U-shaped gantries with which longitudinal monorail with runner is rigidly connected. Pipe line clamping mechanism is provided with hydraulic cylinders for closing it and is secured on the runner. Hanger is made in form of semitore secured on transverse beam of frame. Pipe line keeping mechanism is made in form of two parallel hydraulic cylinders whose housing are hinged to lateral lugs of jaws of clamp gripping mechanism. Cylindrical centering mount is provided with axial hole for pipe line and movable ring with handles and equidistant balance beams. Catenoid runners are located on inner ends of balance beams whose outer ends are coupled with movable ring. EFFECT: enhanced reliability. 4 cl, 6 dwg
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