CABLEWAY LOGGING PLANT Russian patent published in 2001 - IPC

FIELD: logging. SUBSTANCE: proposed cableway logging plant has winch with traction run 6 and idle run 7 of cable, guide sheaves with supports, additional row of sheaves with supports 9, lead- carrying trailer 10 with running part, V-mounted levers 11 with carriages 18 hinge-mounted on trailer and furnished with tier-mounted sheaves 13 and 14. Additional row of sheaves with supports is located in zone of closed circuit of which cable-and-sheave system found between winch and carriage 12 pointed to winch. Each row of sheaves is made in form of tier-by-tier mounted guide sheaves 15, 16 connected with V-shaped brace 17 hinge-mounted on supports 9. These supports are arranged at both side from longitudinal vertical plane passing through longitudinal axis of trailer 10. Circuit of cable-andsheave system of winch is located in this plane. Sheaves 13, 14 are arranged in level higher than sheaves 15, 16. Distances between axes of sheaves 13, 14 and axes of sheaves 15, 16 are equal to each other. Lower circuit of run 7 and run 6 are located above sheaves, 14, 16 and upper circuit of run 7 is located between sheaves 13 and 15. Trailer 10 is provided with winch 18 through drum of which traction run 6 of cable is passed. End of run 6 is connected with cable choker equipment. Plant is provided with guys. EFFECT: increased capacity, improved efficiency in operation owing to reliability pf design members. 3 cl, 2 dwg