Summary: In the process of high-pressure Raymond mill operation, gear transmission failure is one of the more common faults. Once the Raymond gear transmission fails, it ...

In the process of high-pressure Raymond mill operation, gear transmission failure is one of the more common faults. Once a gear transmission failure occurs in the Raymond mill, it will seriously affect the smooth progress of milling and delay the efficient operation of the entire production line. What are the reasons for the failure of high-voltage Raymond gear transmission?

1. Due to the special nature of the high-pressure Raymond grinding working environment, 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. Inadequate lubrication of the gear transmission or severe contamination of the lubricating oil can also cause gear transmission failure in the high-pressure Raymond mill.
2. After the gear transmission has been in operation for a period of time, the axis of the pinion and the axis of the grinding drum of the Raymond mill may become non-parallel, causing the gear mesh to change to local contact. If the load is unevenly distributed across the full tooth width, it is easy to cause bending and torsional deformation of the gear shaft. In addition, if the gear transmission material is uneven, with slag inclusions, pores or hard particles, excessive local shear stress on the surface or subsurface layer will result in broken teeth.
3. There is stress concentration on the gear of the high-pressure Raymond mill. When the tooth tip of the gear enters the meshing state, the surface layer forms the original crack under the action of excessive equivalent contact shear stress. During gear operation, the high-pressure oil pressure wave generated by contact pressure enters the cracks at a very high speed and exerts a strong fluid impact on the crack walls. At the same time, the surfaces of the gear pair can close the crack openings, causing the oil pressure inside the cracks to further rise. This forces the cracks to propagate toward the material depth and the tooth surface, eventually leading to material spalling from the tooth surface and the formation of pitting corrosion.
4. In the transmission, the load duration of a single tooth in the gear pair is greatly prolonged, which is an important reason for the excessive wear of the gear. 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.