Cone Crusher’s Troubleshooting and Maintenance Measure

Cone Crusher often appear the gears unwearable, broken teeth; reduction in the fuel tank, oil level decreased significantly; oil pressure lower than 0.05 MPA; water in oil; seal drainage oil, oil temperature does not rise; at the same time increasing the hydraulic oil also increased;  the filter pressure is too large; oil temperature exceeds 60 ℃, but the oil does not rise; lubrication oil qualitative difference; crusher often vibration, support sleeve jump, they can still work; there is Slap crack sound when crushed ore; crusher has a strong vibration. These failures not only affect the normal functioning of the crusher efficiency but also in many parts of the crusher, a significant reduction in the working life, spare parts consumption increased significantly, also increased maintenance and production labor intensity. Therefore, a reasonable way to deal with these failures is necessary to run a cone crusher.

Failure Analysis

• The gears are unwearable or the teeth are broken.

The meshing conditions of bevel gears are destruction. One pair of bevel gears normally engaged, must be the top two bevel gears intersect at one point, and coincides with the pitch circle. And this special operation state large bevel gears damage a pair of bevel gears meshing normal relations, so the tooth surface during operation of the gear will have a huge impact load and sliding friction. In addition, since the gap cone crusher eccentric bushing sleeve and the rack is greater than the gap between the general sliding bearings, resulting in the size of the bevel gears by the impact load, a worn or broken tooth is widespread. Especially small bevel gears, bevel gears relative to the large, the result of a small number of teeth, the roots of thin teeth, broken teeth more common, this is the cone crusher gear wear quickly, and often one of the main causes of the occurrence of broken teeth.

Rigid connection transmission.Transmission type, asynchronous motor rigidly connected by flexible coupling with the gear shaft. When the cone crusher overload or the material has Iron, the teeth will be broken.

The high content of Iron or too big stone. Although the crusher’s spring can protect the machinery when the ore has iron or large stone, however, too frequent, also will hurt the operation system.

• Crusher often vibration.

Crusher spring is not enough tightness; the ore uneven or excessive, the crusher will cause frequent vibration; When the crushed mine excessive and moisture, the out mouth is small, resulting in the port of discharge at the mine often blocked, causing frequent vibration crusher.

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