NEWS

The structure of the cone crusher mainly includes a frame, a horizontal shaft, a moving cone, a balance wheel, an eccentric sleeve, an upper crushing wall (fixed cone), a lower crushing wall (moving cone), a hydraulic coupling, a lubrication system, a hydraulic system, The control system is composed of several parts. During the working process, the transmission device drives the eccentric sleeve to rotate, and the moving cone rotates and swings under the force of the eccentric shaft sleeve, and the material is crushed by repeated extrusion and impact of the mantle and bowl liner. The material that has been crushed to the required particle size falls under its own gravity and is discharged from the bottom of the cone.

Cone crusher wearing parts: crushing cavity,mantle,bowl liner, main shaft and cone bushing, thrust plate and gear, frame and spherical bearing, eccentric bushing and straight bushing, bushing, taper bushing, these What is the role of the parts on the work of the cone crusher? Let’s analyze it now.

Crushing cavity

The parallel area of the crushing cavity is severely worn, and the fixed cone is more worn at the entrance of the parallel area, and the movable cone liner is more worn at the discharge opening. The wear amount of the whole parallel zone is larger than that 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.

Mantle

Mantle in the cone crusher is fixed on the cone body with the cone head, and there is a zinc alloy cast between the two. Mantle is the key to extrusion and crushing. If it is damaged, it cannot work, resulting in shutdown. Replace mantle. After working for 6-8 hours, you should check the fastening condition, and fasten it immediately if it is found to be loose.

Bowl liner

Mantle and bowl liner are the parts that directly contact the material, and they are also the main wear-resistant parts in the cone crusher. When the cone crusher is in operation, mantle move in a trajectory, and the distance from the bowl liner is sometimes close and sometimes far away. The material is crushed by the multiple extrusion and impact of mantle and bowl liner. At this time, part of the material will be from the Discharge from the outer discharge port. Bowl liner can be replaced on site. Unscrew the adjusting screw sleeve installed on the upper frame (note that it is turned counterclockwise), remove the upper chamber hopper assembly, lift the adjusting screw sleeve with hoisting equipment, and remove the adjusting screw sleeve After the supporting plate is bolted, bowl liner can be removed for replacement. When assembling, the outer surface should be cleaned, the threaded surface of the adjusting screw should be coated with butter, and fixed in reverse order.

Spindle and taper bushing

Under the normal working condition 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 the cone bush wear heavily at the lower part and light at the upper part, the movable cone will be slightly unstable at this time, and the crusher cannot operate normally. If there is local contact between the main shaft and the taper bushing at the lower end, the taper bushing will be cracked and damaged.

Thrust plate and gear

The thrust plate wears more seriously along the outer circle. Due to the high linear speed of the outer ring, the wear is faster than that of the inner ring. And because of the skew of the eccentric shaft sleeve, its outer ring wear is aggravated. When the crusher is running, the large bevel gear moves around the crusher in a circle with the radius of the gap between the straight bushes, which will cause additional impact vibration and additional wear during the operation of the gear, shortening the life of the gear.

Frame with spherical bearings

The wear of the spherical tile is a process that gradually develops from the outer ring to the inner ring. In the later stage of use, the moving cone may be unstable, and the main shaft may be stuck at the lower opening of the cone bushing, resulting in cracks and damage to the lower opening of the cone bushing, and even the phenomenon of “speeding” and damage to the spherical tile. crack.

Eccentric bushing and straight bushing

The wear of the eccentric bushing shows that along the height direction of the eccentric bushing, the upper part of the eccentric bushing is heavily worn and the lower end is slightly worn. The degree of wear on the upper part is also gradually reduced from top to bottom. During the operation of the cone crusher, the straight bushing often moves upward and the straight bushing cracks. Cracks are more likely to be caused by the straight bushing running up, but when the straight bushing is cracked, the debris generated will cut the surface of the center hole of the frame and make it out of round; the cracked debris will especially damage the eccentric bushing, which will make the whole machine The working conditions deteriorated, and even serious accidents were caused.

Bushing

The wear of the shaft sleeve of the cone crusher will seriously affect the production. When the shaft sleeve is worn to a certain extent, it must be replaced in time. The replacement of the shaft sleeve also requires certain skills. When removing the shaft sleeve, the first choice is to separate the cutting ring of the shaft sleeve. To prevent damage to the main shaft, the sleeve can be easily removed by turning the iron bar counterclockwise.

Taper sleeve

The taper sleeve should be checked regularly and replaced in time, and the replacement cycle is determined according to the hardness of the material processed and the daily working hours. To prevent the bush from rotating during replacement, zinc alloy should be added inside, and no gap should be left between the cone bushing and the eccentric shaft.

The above is the little knowledge about the cone crusher. Mantle and bowl liner are important parts of the cone crusher, and more wearing parts are replaced. During its operation, it should be noted that the materials put into the equipment must meet the crushing requirements, and it is strictly forbidden to enter the crushing cavity with excessive hardness, high moisture content or other non-broken objects, otherwise it will cause the mantle to bowl liner, and the equipment will stop, etc. 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 mantle and bowl liner to prevent uneven wear.

Shanvim as a global supplier of crusher wearing parts, we manufacture cone crusher wearing parts for different brands of crushers. We have more than 20 years of history in the field of CRUSHER WEAR PARTS. Since 2010, we have exported to America, Europe, Africa and other countries in the world.