The method of preventing the loosening of the crusher cone liner

Abstract

The invention discloses a method for preventing a crusher movable cone lining plate from loosening. The method comprises the steps that firstly, a locking nut is dismounted from a main shaft; secondly, an original upper lining plate and an original lower lining plate are cut and dismounted; thirdly, grinding, matching and pre-installing of a new upper lining plate and a new lower lining plate areconducted, an upper lining plate seam is set to face up a lower lining plate seam, according to the grinding matching requirement, the contact area is increased to 85%-95% from 50%-60%, and the contact gap is reduced to 1-3 mm from 4-6 mm; fourthly, a new upper lining plate and a new lower lining plate are arranged on a movable cone body, the contact face length of the lower lining plate and the movable cone body is increased to 250-300 mm from 60-80 mm, and the contact gap is reduced to 0.1-0.7 mm from 1-2 mm; fifthly, the locking nut is installed, and the upper lining plate and the lower lining plate are pre-tightened; and sixthly, zinc liquid is poured between the upper lining plate and the movable cone body and between the lower lining plate and the movable cone body, and after the zinc liquid is condensed, the locking nut is tightened again. According to the method for preventing the crusher movable cone lining plate from loosening, contact between the upper lining plate and the movable cone body and between the lower lining plate and the movable cone body is good, the casting effect is good, firmness is high, and lining plate loosening, cracking and disengaging are avoided.

Description

technical field [0001] The invention relates to the technical field of mine crushing equipment, in particular to a method for preventing the loosening of a cone liner of a crushing motor. Background technique [0002] Gyratory crushers are mainly used as coarse crushers in mines, building materials and infrastructure departments. According to the width of the feeding opening, they are divided into three types: large, medium and small. The width of the feeding opening is greater than 1200mm. (1200mm ~ 900mm) is a medium-sized crusher, and the width of the feed opening is less than 900mm is a small crusher. [0003] The working parts of the gyratory crusher are the movable cone and the fixed cone, one is the fixed cone, the upper end is slightly outwardly inclined, and is fixed on the frame, the other is the movable cone, the upper end is fixed on the beam, and the lower end is fixed on the eccentric sleeve of the machine base. Together with the fixed cone, a crushing chamber...

AI Technical Summary

Problems solved by technology

[0004] In the process of crushing iron ore, due to the impact, collision and grinding of iron ore, the life of the movable cone liner is short, cracking, loosening and other problems often occur, which seriously affects the safe production of the gyratory crusher, and Bring great difficulties to equipment management and production organization

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