In 1 the series crusher crusher compared with other types, with broken than large, for the crushing of material moisture without any request, and the non-stick is not blocked, have crushed less, low noise, small vibration, less dust, low energy consumption, small occupation area, simple and convenient repair. 2 is equipped with a hydraulic automatic yielding device, can effectively prevent the iron on the toothed roll damage and wood and flexible object on the normal work of the harm of tooth roller. 3 is equipped with a smart removal device, can use the working interval automatic clearing crusher cavity wall adhesion material. 4 with mechanical, electrical, hydraulic and other multiple protection device and a linkage device, the effective protection of the motor, and the entire system of crusher. 5 of the products with high efficiency, energy saving, environmental protection and other advantages become the power plant to replace imported equipment broken equipment preferred. Application of low hardness material suitable for crushing the brittle materials, such as coal, anthracite coal, brown coal and coal gangue, can also be used for sintering ore, coke, and limestone, shale, slag.