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Conical crusher Jul 04, 2018

Cone crusher is a crushing machine suitable for raw materials in metallurgy, construction, road construction, chemical industry and silicate industry. According to the difference of crushing principle and the particle size of products, they are divided into many models. Crusher is widely used in mining, smelting, building materials, highways, railways, water conservancy and chemical industries and many other departments. The cone crusher has large crushing ratio, high efficiency, low energy consumption and uniform particle size. It is suitable for crushing and crushing all kinds of ores and rocks. The models are mainly divided into SMG series, spring type and HPC series. Their working principle and structure are introduced respectively. The development history, working principle, composition, influence factors, technical advantages, operation matters, common faults and inspection and maintenance of the cone crusher are also described in detail.

The crushing process is completed between fixed cones and circular moving cones.

When the cone crusher works, the horizontal axis of the crusher is driven by the motor through a triangular belt and a belt pulley. The horizontal axis is driven by a large and small gear to drive the eccentric sleeve. The cone shaft of the crusher produces eccentricity under the action of the eccentric sleeve, making the surface of the broken wall close to the surface of the cone, and away from the surface of the fixed cone. Thus the stone is crushed, broken and impacted by crushing and crushing in the crushing chamber. The broken material is discharged from the discharge port at the lower part of the crusher under the action of self weight. The upper cavity of the conical crusher cone is supported on the spherical bearing bearing on the upper end of the main shaft, and the lower cavity is set outside the eccentric shaft sleeve, and the motion is driven directly by the eccentric shaft sleeve. When the eccentric shaft revolves around the spindle, the moving cone is not only rotating along the center line of the machine, but also rotates around its axis, and the moving cone is revolving around its spherical support center. The axis of the moving cone intersects the center line of the spindle at a fixed point, that is, the center point of the sphere, and its angle is the precession angle. When the crusher runs, the axis of the moving cone is moved to the conical plane relative to the center line of the machine, and the top of the cone is a spherical support center, and the point remains stationary during the motion of the moving cone. Therefore, the motion of the moving cone can be seen as the rotation of the rigid body around the fixed point, that is, the motion of the moving cone is composed of two kinds of rotation motion: the precession or the implicated motion (the moving cone revolves around the center line of the machine) and the rotation motion or the relative motion (the moving cone rotates around its axis).

In the case of unloaded operation, the rotation of the cone crusher is determined by the friction moment of the spherical bearing and the friction force of the moving cone. Under normal circumstances, the moving cone rotates along the rotation direction of the eccentric sleeve, and the rotation speed is determined by the difference between the two moments. The cone crusher is used to control the rotation of the moving cone between the spherical bearing and the dynamic cone bushing. Under the condition of load operation, the friction moment of the stone on the moving conical surface is far greater than that of the eccentric shaft sleeve on the moving cone.