Jaw crusher is to use two of the jaw plate bending and extrusion materials, rough broken or broken in various hardness materials broken machinery. Its fixed jaw broken by the agency board and movablejaw plates formed when two plates near the jaw broken when materials shall, when the two left jaw plate nesting population is less than expected from the bottom of the block. Its action is broken intermittently conducted. Such breakers due to simple structure, reliable and work hard materials can be broken and the advantages of being widely used in mineral processing, building materials, ceramics, and other silicate and industrial sectors. As of the 1980s, crushing 800 tons of materials per hour of large jaw crusher to the expected size of over 1,800 mm or so. Common Jaw Crusher have plate and the plate two single elbow. The former fixed jaw at work only give a brief swing arc, it is also called a simple swing jaw crusher; for the latter in the swing arc at the same time also for vertical motion, it is also called complex swing jaw crusher.