Is the coal mine boring machine electric?

The coal drilling rig is electric. According to relevant public information, the patent of three-phase asynchronous motor for coal mine roadheader belongs to electrical equipment. Roadheader is a machine used to dig tunnels on flat ground. There are many kinds of roadheader: according to the working object, it is divided into ordinary machine and tunnel roadheader; According to the operation mode, it is divided into open roadheader and shield roadheader.