Yancheng XINLAN Precision Machinery Co., Ltd.

The gear box is lubricated by gear oil, semi-fluid grease and solid lubricant.Gear oil can be used for lubrication, with good sealing performance, high speed, high load, and good sealing performance; for poor sealing and low speed, it can be lubricated with semi-fluid grease; ultra-fine molybdenum disulfide powder can be used in oil-free occasions or high temperature occasions Lubrication.

The lubrication system of the gearbox is of great significance to the normal operation of the gearbox.Large-scale wind power gearboxes must be equipped with a reliable forced lubrication system, and the gear meshing area and bearings must be lubricated with oil.Insufficient lubrication accounts for more than half of the causes of gearbox failures.Lubricating oil temperature is related to component fatigue and the life of the entire system.Generally speaking, the maximum oil temperature during normal operation of the gearbox should not exceed 80, and the temperature difference between different bearings should not exceed 15.When the oil temperature is higher than 65, the cooling system starts to work.When the oil temperature is lower than 10, the lubricating oil should be heated to the preset temperature before starting.

In summer, due to the long-term full power state of the wind turbine and high-altitude direct sunlight, the operating temperature of the oil rises above the set value; when used in the severe cold region of the northeast in winter, the minimum temperature often reaches below 30, the lubricating oil in the lubrication pipeline is not smooth, and the gear Insufficient lubrication of the bearing and the gear box causes the gearbox to stop at high temperatures, and the tooth surface and bearing wear.In addition, low temperature will increase the viscosity of the transmission oil, and the oil pump will be overloaded when starting.

Gearbox lubricating oil has the best operating temperature range. It is recommended to design a lubricating oil thermal management system for the gearbox lubrication system: when the temperature exceeds a certain value, the cooling system starts to work, when the temperature falls below a certain value, the heating system starts to work , The temperature is always controlled within the optimal range.In addition, improving the quality of lubricating oil is also an important aspect that must be considered in the lubrication system. Lubricating oil products must have excellent low-temperature fluidity and high-temperature stability.