DEVICE FOR CLEANING EXTERNAL SURFACE OF PIPE LINE Russian patent published in 2003 - IPC

FIELD: devices for cleaning external surfaces of pipe lines. SUBSTANCE: proposed device includes frame with running wheel, cleaning tools secured on side surfaces of frame which are pressed towards longitudinal axis of symmetry of frame and drive kinematically linked with cleaning tools. Running wheels are made in form of bearing members with rollers at the end which are mounted on side walls of frame over perimeter; drive is made in form of rotor secured on frame and provided with drive chain secured around it; said chain is thrown into engagement with sprocket fitted on wheel rim. Engine kinematically linked with sprocket and handle-lever are mounted on rim. Device ensures rotation and longitudinal motion of frame with cleaning tools from one drive at simultaneous compensation of torque during rotation of frame. EFFECT: enhanced reliability. 4 dwg