According to the lamination theory, the material is broken and polished according to its own texture, forming stable stone particles, falling from the clearance of the broken wall, and the rest materials continue to be broken until reaching To the request. When the cone crusher is working, the rotation of the motor moves around a fixed direction through the belt pulley or coupling, the transmission shaft and the cone under the force of the eccentric sleeve, so that the crushing wall of the cone crusher sometimes approaches and sometimes leaves the surface of the white rolling wall installed on the adjusting sleeve, so that the ore is continuously impacted, squeezed and bent in the crushing cavity to achieve the crushing of the ore. Broken. When the non breaking foreign matters pass through the crushing chamber or the machine is overloaded for some reason, the spring safety system can realize the safety, the ore discharge opening is increased, and the foreign matters are discharged from the crushing chamber. If the foreign matter is stuck in the ore discharge opening, the cavity cleaning system can be used to make the ore discharge continue to increase, so that the foreign matter can be removed from the crushing cavity. Under the action of the spring, the discharge port automatically resets and the machine returns to normal operation.