explosion-proof overhead crane

Lifting mechanism includes a motor, brake, reducer, drum and pulley. Motor through reducer, drive roll rotation,explosion-proof overhead crane so the rope around the roll or from roll down to lift heavy objects. Small frame is the bracket and install the hoisting mechanism and operating agencies and other parts of the car chassis, usually welded structures.
Drive mode crane operating agencies can be divided into two categories: one category is focused on the driver, which uses an electric motor to drive the long sides of the Active Wheel drive shaft; another kind were driven wheel that is active on both sides of each with a single motor ,Single Girder Gantry Crane  The more frequent use of a combination of a small bridge crane brakes, gear units and motors into one of the "triple play" drive mode, a large general overhead crane lifting weight for ease of installation and adjustment, often using universal coupling drive .
Crane operation agencies generally only four active and driven wheels, if the weight is large, commonly used methods to increase the wheel from the wheel pressure to reduce. When more than four wheels, a frame must be balanced hinge means that the crane load is evenly distributed on each wheel.