RU93046285A - CABLE WIRING DEVICE WITH LESS THAN ONE CABLE WIRE TUBE FROM THERMOPLASTIC PLASTIC AND METHOD OF PULLING CABLES IN CABLE WIRE PIPES - Google Patents

Claims (1)

A cable conduit with at least one thermoplastic plastic conduit pipe containing a conduit channel with a circular cross-section inside wall of the channel with internal radius r of the pipe and fins of the thermoplastic plastic pipe located on the internal wall of the channel. Sliding ribs are relative to the inner circle with a given angle of rotation α. In a rectangular conduit pipe with an input cable at the points of contact between the sliding ribs and the cable sheath, contact surfaces of the contact width b of the ribs are formed. Sliding ribs run in waves and between areas with a constant angle of rotation α form reversible zones. The contact width b of the edges, the number of sliding edges distributed around the circumference of the inner wall of the channel at an equal distance from one another, the inner radius r of the pipe and the length L _{K of the} contact areas of the edges between the reversing zones satisfy the equality Ar = 0.16 b ² z L _K. A defines the contact surface of the cable sheath at the points of intersection with the sliding ribs in the contact areas of the ribs. Measured in radians, the angle g of the slope of the sliding edges, measured on the inner wall of the channel, satisfies the equality g = ra / L _K.