On the roll crusher mainly http://www.8psj8.com motor phase asynchronous motor as the main line, the common narrative portion of the electromagnetic design and referral Gang generator, turbine generator, motor, permanent magnet motor, respectively Design features, single-phase asynchronous motors, transformers and other electrical and introduce new technologies to roll crusher unit in applications such as analysis of these hydroelectric generator stator windings new way of transposition; single-phase motors ellipse major axis of the magnetic field Empty the best position to determine the basis of its energy-saving effect; heat pipe cooling in the motor applications. It also describes the common magnetic, conductive and insulating materials. Part of the roll crusher mechanical calculating machine motor. The main unit speed for large structure described ring, disc, thick-walled cylinder rotating centrifugal force under stress and deformation; rotary shaft torsional vibration and has a frequency problem, base vibration characteristics; noise analysis and control; thermal units engaging piece electric machinery structure of the application. Preparation for the roll crusher checking procedures; establishment automatic slot, automatic line selection procedures; analysis and comparison of different optimization methods, single multi-objective optimization and series motor function optimization difference method; basic computer-aided drafting program introduction.