Work on broken jaw crusher in the main part is responsible for by two piece of jaw, one is the fixed jaw is need vertical (or the upper slightly extraversion) fixed in front of the jaw crusher body wall, another is tilt of the jaw, and formed between the fixed jaw plate under small crushing cavity part. It is the main way of working activities jaw slabs with fixed jaw do periodic reciprocating motion, from time to time is separated between the two jaw close. When separated from the material into the crushing cavity, finished products from the lower discharge; And near the worsened in materials are squeezed between two pieces of jaw plate, bending and splitting force was broken off.

The moving jaw jaw crusher use different ways of swinging at work, can be divided into simple oscillating jaw crusher, complex oscillating jaw crusher and comprehensive oscillating jaw crusher.

Jaw crusher in mining, building materials, construction and other departments are mainly used as coarse crusher and crusher. According to the inlet width size is divided into large, medium and small three, inlet width is greater than 600 mm for large machines, feed port in 300-600 - mm width for medium-sized machine, feeding mouth width is less than 300 mm for the minicomputer. Jaw crusher structure is simple, easy manufacturing, reliable work, convenient use and maintenance.