What is the role of the limit switch for bridge crane?

Overhead crane is an important lifting device in industrial production, metallurgical technology, and mechanical equipment. Its safety and reliability requirements are also high.

For the safety of bridge cranes, crane safety limit switches will be installed on the carriages of the crane. At the same time, the trolleys and the main hooks are equipped with safety limit switches and electromagnetic brake systems. These measures effectively protect the safe operation of the cranes.

The limiter for bridge crane includes limit switch such as cross beam limit switch, trolley limit switch, and main hook limit switch. Among the limit switches, direct-acting type trip switch is used to realize a circuit by moving a movable body to collide a movable part to make contacts thereof turn on or off. Smooth. In the working process, the crane does not always start, belongs to the intermittent machine and starts or stops continuously. Therefore, specific braking devices are installed in the lifting mechanism, running mechanism and rotating mechanism of the vehicle to prevent a safety accident occurred while driving.