Analysis of bridge crane operating agencies drive

Here I will run institutions Analysis  sino hoist  drive:
     Bridge crane operating agencies drive can be divided into two categories: one for the central drive, which uses an electric motor to drive long shaft-driven initiatives on both sides of the wheel; another is separately driven, that is active on both sides of each wheel with an electric motor driven. Medium and small bridge cranes more use brakes, gear units and motors combined into one "triple play" drive mode, a large common bridge  steel crane  lifting weight for ease of installation and adjustment, universal coupling drive device often used .
     Crane agencies generally only four driving and driven wheels, if the starting weight is large, common approaches to reduce the wheel increases wheel pressure. When more than four wheels, a frame must be balanced hinge device, the  overhead gantry crane  load is evenly distributed on each wheel.