... bridge should be strictly according to GB6067-1985 "crane safety regulations" if it is used in open space ... up or down. Lifting height H = 6m, when Crane capacity <10t, we should use a elastic coupling to ... guide would prevent steel wire rope mess aroundWhen H ≥ 9m, crane ≤ 10t; H ≥ 6m, weight ≥ 12.5t, we ... also has conical rotor, the brake part has a ring plane and smaller brake torque. It is slow in ...