The working principle of Cone crusher

The working principle of Cone crusher

The crushing process is completed between the fixed fixed cone and the rotating moving cone. When the cone crusher is working, the horizontal axis of the crusher is driven by the motor through the V-belt and the pulley. The horizontal axis drives the eccentric sleeve to rotate through the large and small gears. , so that the surface of the crushing wall is sometimes close to the surface of the fixed cone, and sometimes away from the surface of the fixed cone, so that the stone is continuously crushed, broken and impacted in the crushing cavity. The crushed material is discharged from the discharge port at the lower part of the crusher under the action of its own weight. The upper cavity of the cone crusher motor cone is supported on the spherical bearing pad at the upper end of the fixed main shaft, and the lower cavity is set outside the eccentric bushing, and its movement is directly driven by the eccentric bushing. When the eccentric sleeve rotates around the main shaft, the moving cone not only rotates around the center line of the machine with the eccentric sleeve, but also rotates around its own axis. The axis of the moving cone intersects the center line of the main shaft at a fixed point, that is, the center point of the sphere, and the included angle is the precession angle. When the crusher is running, the axis of the moving cone moves on a conical surface relative to the center line of the machine, and the top of the cone is the center of the spherical support, which remains static during the movement of the moving cone. Therefore, the motion of the moving cone can be regarded as the rotation of a rigid body around a fixed point, that is, the motion of the moving cone is composed of two kinds of rotational motion: precession motion or implicated motion (the moving cone rotates around the center line of the machine) and autorotation or relative motion Movement (moving cone rotates around its own axis).

In the case of no-load operation of the cone crusher, the rotation of the moving cone is determined by the friction torque of the spherical bearing to the moving cone and the friction force of the eccentric bushing to the moving cone. Whichever torque is larger, the moving cone will be based on this torque direction to turn. Under normal circumstances, the moving cone rotates along the rotation direction of the eccentric shaft sleeve, and the rotation speed is determined by the difference between the two moments. This type of cone crusher is between the spherical bearing and the lower bushing of the moving cone to control the rotation of the moving cone. In the case of load operation, the friction torque of the stone on the moving cone surface far exceeds the friction torque generated by the eccentric shaft sleeve on the moving cone.