... shapes, as well as to use with electric wire rope hoists gantry cranes for lifting 3. The ... level should be according B/T9008.1-2004 "wire rope hoist - Part 1: Types and basic ... Main structure and working principle of CD1, MD1, wire rope electric hoist CD1, MD1 rope electric hoist is ... mechanism and electrical control devices. MD1, HMD1 electric wire rope hoist is based on CD1, which changes hoisting ...