With the advancement of the national power grid and the increasing
requirements for conductor current-carrying capacity in
high-voltage line projects, conductor cross-sections have steadily
grown larger. Consequently, the groove-bottom diameters of
stringing sheaves have gradually expanded—progressing from 560,
710, 800, and 900 mm to 1000 mm. However, line construction often
takes place in mountainous regions characterized by steep slopes,
significant elevation differences, and complex terrain. In such
environments, large-diameter stringing sheaves present considerable
challenges: they are bulky and heavy, difficult to transport, and
entail high procurement costs. To address this situation, the
development of a compact, lightweight, detachable, and
cost-effective multi-wheel combination sheave holds profound
significance for Ultra-High Voltage (UHV) construction,
representing a revolutionary advancement in construction
methodology.
