In China's construction machinery mainly include: mining machinery, earth moving machinery, construction cranes, road machinery, compaction machinery, piling machinery, concrete machinery, drilling machines, forklifts, construction machinery and other special 10 categories. Its classification similar to other countries, such as the United States said the construction machinery for construction machinery, construction machinery, Shandong East Japan called Diesel, Russia called the building and road construction machinery. Specifically common engineering machinery: hydraulic excavators, crawler dozers, wheel loaders, rollers, graders, pavers, forklift and automobile cranes. Mechanical engineering principles generator rotor shaft filled with two claw-pole pressure, claw pole is processed into the shape of beak, claw pole cavity built with the field winding and the yoke. Slip ring consists of two insulated copper ring on each other, press-fitted on the rotor shaft and insulated from the shaft, two slip rings are connected to both ends of the field winding, respectively. When two slip rings to pass into the DC current through the field winding in there diesel engine manufacturer in East China, and produce axial flux, the claw pole piece is magnetized to the N pole Weifang Huadong Diesel, another piece of magnetized S pole, thus forming six pairs (or eight pairs) intertwined poles. When the rotor rotates to form a rotating magnetic field. East diesel wholesale | Weifang Huadong (certified) | East by Weifang Diesel Engine Co., East China. Weifang Huadong Engine Co., Ltd. (www.hdchai.com) is an industry leader in Shandong Weifang, the internal combustion engine, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Weifang East leaders with the staff warmly welcome all inquiries negotiations to create a better future Weifang East.