What causes the Raymond mill gear transmission to fail

In the process of Raymond mill operation, gear transmission failure is one of the more common faults. Once the Raymond gear transmission fails, it will seriously affect the smooth operation of the milling operation and delay the efficient operation of the entire milling production line. Then. What are the reasons for the failure of Raymond gear transmission?

1. Due to the particularity of the working environment of Raymond Milling, the working environment of the gear transmission is poor during the grinding operation, and the gear pollution is serious under the influence of the dust particles. Or the lubrication of the gear transmission part is not timely, the lubricating oil is seriously polluted, etc., which will cause the high-voltage Raymond grinding gear transmission to fail.

2. After the gear transmission has been in operation for a period of time, the axis of the pinion and the axis of the Raymond mill stage drum may become non-parallel, causing the gear mesh to become a local contact. If the gear is unevenly applied over the entire tooth width, it is easy to cause bending and torsional deformation of the gear shaft. In addition, if the gear transmission material is not uniform, there are slag inclusions, pores and hard particles, etc., and the local shear stress of the surface layer or subsurface layer is too large, resulting in broken teeth.

3. There is stress concentration on the gear of Raymond mill. When the tooth tip of the gear enters the meshing state, under the action of excessive equivalent contact shear stress, the surface layer forms the original crack. During the operation of the gear, the high-pressure oil wave generated by the contact pressure enters the crack at a very high speed, and exerts a strong fluid impact on the crack wall; at the same time, the surface of the gear pair can close the crack opening, so that the oil pressure in the crack further It rises and forces the crack to expand in the depth direction and the tooth surface direction, and the material falls off from the tooth surface, forming pitting corrosion.

4. In the transmission, the time that the gear pair single tooth bears the load should be greatly extended, which is an important reason for the gear wear too fast. The decrease in the degree of coincidence will inevitably lead to an increase in the backlash of the gear, so that some impurities and floating matter and dust in the air are more likely to enter between the meshing faces of the gear pair, causing wear of the abrasive grains.

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