Cone crushing wall
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Cone crusher is a commonly used equipment in mining operations. In the working process of the cone crusher, the cone crushing wall is prone to wear and even damage. In order to reduce the impact on the crusher, it needs to be replaced in time.
Key words:
Cone crushing wall
Classification:
Broken wall
Hotline:
Cone crushing wall
Cone crusher is a commonly used equipment in mining operations. In the working process of the cone crusher, the cone crushing wall is prone to wear and even damage. In order to reduce the impact on the crusher, it needs to be replaced in time. In order to replace more convenient, can prepare two sets of broken wall and two sets of bowl bearing, respectively, supporting the use. When replacing the broken wall, you need to pay attention to the following points:
Hoist the eccentric sleeve and grind the worn parts of the execution bushing and tapered bushing to ensure the smoothness of the friction surface.
Check the fixing of the straight bushing. The axial fixing of the straight bushing is fixed by hot injection zinc alloy, and the fixing method is not firm. During the operation of the equipment, the shaft sleeve often rotates and lifts upward, which may cause the bushing to rupture due to stress. In view of this situation, the hot injection zinc alloy can be fixed as a fastening screw, 4-Φ14 threaded holes are evenly distributed at the junction of the bushing and the frame, and then 4 countersunk screws are screwed in. After this treatment, the bushing will not rotate and crawl.
When installing the bowl-shaped bearing frame, it is required to pay attention to the close fit with the frame and no swaying phenomenon.
The rotation speed of the broken wall is strictly controlled at 8 ~ 14r/min. If the rotation speed is too low or too high, the productivity of the machine will be affected. In addition, if the rotation speed is too high, the friction force of a certain motion pair is relatively large, which will have a great impact on the oil temperature.
Scrape and grind the replaced bowl-shaped tile supporting spherical surface to ensure that the contact length between the spherical surface of the cone crusher and the bowl-shaped tile on the outer circle is 84~140mm, not less than one contact point per 2~5mm2 area, and maintain a wedge-shaped gap of 0.5~1mm along the inner circumference to ensure that the spherical surface of the cone crusher and the inner circle of the bowl-shaped tile do not contact each other.
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High manganese steel has high tensile strength, plasticity and toughness and weak magnetism. Under the condition of high speed and heavy load, the working face will form a work hardening layer, which has good wear resistance. At the same time, it also has austenite. Even if the parts are worn to a very thin thickness, it can still withstand a large impact load without cracking, and will not cause secondary damage to the equipment itself.
The broken wall and rolling mortar wall of the cone on the market are generally made of high manganese steel.
Add lubricating oil during installation: when installing the crushing wall of the cone crusher, it is necessary to pour zinc alloy into the crushing wall. Before pouring zinc alloy, the crushing wall or the inner surface of the lining plate can be coated with a thin layer of lubricating oil, which can not only avoid moisture, but also increase the durability of the crushing wall and prolong the action time.
Broken wall, pricked wall is a very strong mechanical equipment, which can be carried out very well is to check its firmness before use, this will promote the efficiency of use more quickly.
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