which uses an electric motor to drive long shaft-driven initiatives on both sides of the wheel

General overhead crane used mainly electric drive, generally in cab control,there are also remote control. Weight of up to 500 tons, span up to 60 meters. Large common bridge 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 crane load is evenly distributed on each wheel
1 central drive, which uses an electric motor to drive long shaft-driven initiatives on both sides of the wheel;
2 separately driven, the active side of a wheel of a motor-driven;
Three. "Triple play" drive mode, ie brakes, gearbox and motor drive combined into oneSimilar to the off-track box girder by four steel plates form a closed structure, in addition to the pallet jacks web is a real belly-shaped beam, the other three steel plates in accordance with the design requirements into many windows, forming a non-fasting truss diagonals in the upper and lower horizontal truss paved walking platen surface, cranes operating agencies and electrical equipment installed in the tray inside, lighter weight, the overall stiffness, which is more widely used in China as a pattern.