What Are The Wearing Parts Of The Cone Crusher And How Long Do They Need To Be Replaced?

Cone crusher is also called cone crusher, cone machine, and cone crusher. Its structure mainly includes a frame, horizontal shaft, moving cone, balance wheel, eccentric sleeve, upper crushing wall (fixed cone), and lower crushing wall (moving cone). ), hydraulic coupling, lubrication system, hydraulic system, control system and other parts. During the working process, the eccentric sleeve is driven to rotate through the transmission device, and the moving cone rotates and swings under the force of the eccentric sleeve. The material is crushed by multiple extrusions and impacts from the moving cone and the static cone. The materials that have been crushed to the required particle size fall under the action of their own gravity and are discharged from the bottom of the cone.

Cone crusher wearing parts: crushing cavity, crushing wall, rolling mortar wall, main shaft and cone bushing, thrust plate and gear, frame and spherical bearing, eccentric bushing and straight bushing, shaft sleeve, taper sleeve, etc. 

The wear in the parallel zone of the crushing chamber is more serious, the fixed cone is more heavily worn at the entrance of the parallel zone, and the movable cone liner is more severely worn above the discharge opening. The wear amount of the entire parallel zone is greater than the wear amount of the upper cavity. After the crushing cavity is worn, the cavity shape of the crusher changes greatly and completely loses its original shape, which seriously affects the crushing effect of the crusher.

The crushing wall of the cone crusher is fixed on the cone body with the cone head, and zinc alloy is cast between the two. The crushing wall is the key to extrusion and crushing. If it is damaged, it will not work, resulting in shutdown. After replacing the cone crushing wall After 6-8 hours of work, the tightening situation should be checked and tightened immediately if any looseness is found.

The crushing wall and rolling mortar wall are parts that directly contact the material and are also the main wear-resistant parts in the cone crusher. When the cone crusher is in operation, the crushing wall will make a trajectory movement, and the distance from the rolling mortar wall will sometimes be closer and sometimes farther away. The material will be crushed by multiple squeezes and impacts from the crushing wall and the rolling mortar wall. At this time, part of the material will be broken from the crushing wall. Discharge from the outer discharge port. The rolling mortar wall can be replaced on site. Unscrew the adjusting screw sleeve installed on the upper frame (note the counterclockwise rotation), remove the upper chamber hopper assembly, use lifting equipment to lift the adjusting screw sleeve, and remove the adjusting screw sleeve. After installing the supporting plate bolts, you can remove the rolling mortar wall and replace it. When assembling, clean the outer surface, apply butter on the thread surface of the adjusting screw sleeve, and install and fix it in reverse order.

Under normal operating conditions of the crusher, both the main shaft and the cone bushing have obvious wear marks at a height of about 400mm from the top of the cone bushing. If the main shaft and cone bushing are severely worn at the lower part and lighter at the upper part, the moving cone will be slightly unstable and the crusher will not be able to operate normally. If there is partial contact between the main shaft and the tapered bushing at the lower end, the tapered bushing will be cracked and damaged.

The thrust plate wears more seriously along the outer circle. Because the outer ring has a high linear speed, it wears faster than the inner ring. And because the skew of the eccentric sleeve increases the wear of its outer ring. When the crusher is running, the large bevel gear makes a circular motion around the crusher with a radius generally equal to the straight bushing clearance. This will cause additional impact vibration and additional wear on the gear during operation, shortening the gear life.

The wear of spherical tiles is a gradual development process from the outer ring to the inner ring. In the later stages of use, the moving cone may become unstable, and the spindle may get stuck at the lower opening of the cone bushing, causing cracks and damage to the lower opening of the cone bushing, or even "flying" phenomenon and damage to the spherical tiles. In addition to normal wear and tear, crack.

The wear of the eccentric sleeve is shown in the height direction of the eccentric sleeve, with heavier wear on the upper part and slight wear on the lower end. The degree of wear on the upper part also gradually decreases from top to bottom. During the operation of the cone crusher, phenomena such as the straight bushing moving upward and the straight bushing cracking often occur. The straight bushing is more likely to cause cracks after it is channeled up. However, when the straight bushing cracks, the debris generated will cut the surface of the center hole of the frame and make it out of round; the crack debris will cause serious damage to the eccentric bushing, which will cause the entire machine to be damaged. The working conditions deteriorate and even cause serious accidents.

The wear of the cone crusher shaft sleeve will seriously affect production. When the shaft sleeve is worn to a certain extent, it must be replaced in time. Replacing the shaft sleeve also requires certain skills. When removing the shaft sleeve, you must select a cutting ring that separates the shaft sleeve. To prevent damage to the spindle, the sleeve can be easily removed by turning the iron rod counterclockwise.

The taper sleeve should be inspected regularly and replaced in time. The replacement cycle should be determined based on the hardness of the material being processed and the daily working hours. To prevent the bushing from rotating during replacement, zinc alloy must be added to it, and no gap should be left between the cone crusher cone sleeve and the eccentric shaft.

The above is a little knowledge about the cone crusher. The crushing wall and the rolling mortar wall are important parts in the cone crusher, and they also replace many wearing parts. During its operation, it should be noted that the materials put into the equipment must meet the crushing requirements. It is strictly forbidden to have excessive hardness, excessive moisture, or other non-crushed objects entering the crushing cavity, otherwise it will cause the crushing wall to fall off, the mortar wall to fall off, and the equipment to shut down. Fault. Note: The feeding of the cone crusher must be uniform, and the ore must be fed in the middle of the distribution plate. The material cannot directly interact with the crushing wall and rolling mortar wall to prevent uneven wear.

Zhejiang Yurong Industrial Co., Ltd. http://www.mayangcrusher.com

 was established in 1985 and is located in Wuyi, Jinhua, Zhejiang. It is a wear-resistant parts manufacturer specializing in crushing equipment. It is the unit that presided over the revision of the national standard GB/T5680-2010 "Austenitic Manganese Steel Castings".