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Cone crusher is an advanced hydraulic crusher with high power, high crushing ratio and high productivity. Cone crusher is suitable for fine crushing and ultra-fine crushing of hard rock, ore, slag, refractory materials, etc. As an important equipment in the mining crushing industry, cone crusher has brought huge economic benefits to customers. However, in actual operation, many users have found that their crusher frequently suffers from lock-up phenomenon and cannot work normally, which seriously delays subsequent processing. The following is an introduction to the three major reasons why cone crushers suddenly lock-up. I hope it will be helpful to everyone.

1. Improper amount of lubricating oil added

During lubrication, if the amount of lubricating oil added is too large, the friction torque will increase, and if the amount of lubricating oil is too small, it will not be able to lubricate at all. In addition, lubricating oil containing impurities, failures or not meeting the needs of the equipment will also cause cone crusher equipment. Can not get good lubrication effect.

2. Block the entry of materials or materials that are difficult to break

Excessive feeding of the cone crusher, or the feeding characteristics do not meet the requirements, will cause the cone crusher to block the material, make the working current of the crusher too large, the circuit will automatically protect the shutdown, and even the cone crusher may be locked and forced to stop.

In addition, when the crusher enters the iron, because the iron parts are relatively hard, they will be stuck between the moving and fixed cone liners, and the pressure will increase instantaneously at the moment of crushing, and the power will also increase immediately. Excessive wear of wearing parts, deformation of bushings, lock-up of safety connectors, etc.

3. The spindle is broken

There are two reasons for the fracture of the spindle. First, the structure is unreasonable. When the interference between the spindle and the moving cone mating surface is relatively large, or there is no unloading groove, the stress concentration of the spindle will be caused, the bearing capacity will be too large, and the spindle will be fatigued, which will lead to damage. In addition, when the spindle is designed to be relatively small, it is easy to have the problem of "over-iron", which will lead to fracture; second, the manufacturing quality is unqualified. In the manufacturing process of the spindle, the heat treatment work is not well done, and the material is average, which reduces the compression resistance of the spindle. Once it encounters an unbreakable object, it is easy to have the problem of the spindle breaking. In addition, problems such as lubrication, iron overload, and equipment aging are also one of the reasons why the spindle may break.