导向绳

[ noun ]
a rope used to guide the movement of the load of a crane
<noun.artifact>

Guide rope \Guide rope\ (A["e]ronautics)
A rope hung from a balloon or dirigible so as trail along the
ground for about half its length, used to preserve altitude
automatically, by variation of the length dragging on the
ground, without loss of ballast or gas.
[Webster 1913 Suppl.]