The driving motor of the bridge crane completes the front and back, left and right, up and down movement of the hook through deceleration and transmission organization. In order to ensure the safety of the operation, the necessary electrical maintenance system should be set up, such as the main blocking switch, emergency power off switch, short circuit maintenance, Overload maintenance, limit maintenance, etc.

It is necessary to regularly check the movement and heating of the motor and whether the electromagnet is operating normally. Whether the controller and contactor are flexible and easy to use. It is necessary to: First, prevent out of control due to operating errors or electrical faults such as controllers and maintenance panels, resulting in heavy objects falling or hitting accidents; second, preventing electric shock caused by touching and exposing the power supply slide line or insulation damage or poor grounding Incident; third, in flammable and explosive places, it is necessary to use explosion-proof electric cranes.