LDE type single beam crane has two two electric hoists, hanging two electric hoists on the single beam I-steel, the two hoists can both single action operation and associated operation, can lift longer workpieces, two electric hoists can independently complete the lifting work of the workpiece, and can cooperate with each other to complete the turnover of large workpieces, Each control lever can independently control the shared vehicle operation mechanism. The crane can also be manufactured by European single beam process, full European configuration, more energy saving, environmental protection, quiet, basically maintenance-free.