Abstract
Often needs to carry on large-scale equipment's assembly, the disassemblage, shipping in the actual production process and so on. No matter these equipment are very big from the volume to the weight, therefore needs the large-scale hoist crane to carry on the transporting to it, the bridge-type hoist crane popular name overhead traveling crane is one kind uses for to hoist up, to lay down with the transporting heavy item, and causes the heavy item the level migration to lift heavy objects, the loader in certain distance. The bridge-type hoist crane by the car, the large cart is composed, the main hook for the raising mechanism. Bridge-type lifts heavy objects in the production process has the important application.
key word: The touchscreen PLC frequency changer different controls the automation
