Since the 1950s, production in China since the jaw crusher has been too considerate in breaking through the design of the simulation, imitation, graphical method design phase, the transition phase currently being computer-aided design, manufacturing jaw crusher increasing performance getting better more and more varieties, and a certain share in the international market. Two types of broken machinery and mechanical equipment screening machinery, mining machinery belong to the scope of the production line in a variety of industrial processes usually arranged before and after use, so closely associated. Crushing and screening machinery A mechanical joint use, can be a variety of natural mineral, or industrial production of intermediate materials, through the crushing and screening, as the final product or raw materials for further processing. Therefore, these two types of machinery and equipment in metallurgy, building materials, chemical energy, transportation construction, urban construction and environmental protection and many other areas have a wide range of uses.