Main bearing grease replacement method for fan driving chain

Abstract

The invention provides a main bearing grease replacement method for a fan driving chain. The method comprises the following steps that old grease in a cavity on the side, close to a gear box, of a bearing seat is cleaned up at first, new grease is poured into the cavity on the side of the gear box, then new grease is poured into the cavity of the bearing seat in a turning state, and the new grease and the old grease in the cavity on the side, far away from the gear box, of the bearing seat are mixed; and meanwhile, most of the new and old mixed grease in the cavity on the side far away from the gear box is washed away through the poured-in new grease, then the new grease is injected again in the turning state, the new grease and the old grease can be evenly mixed and then discharged, then the new grease is injected multiple times, evenly mixed and then discharged, finally, the discharged grease does not change color, and cleaning of the old grease is completed. The discharged old grease needs to be weighed in the whole process, so that it is guaranteed that the total grease injection amount and the total grease discharging amount are almost the same. The grease of a main bearing can be replaced through grease injection and grease discharging methods, damage of a bearing oil film can be reduced to the maximum extent, the lubricating environment of the main bearing is improved, and the service life of the main bearing is prolonged.

Description

technical field [0001] The invention relates to the technical field of drive chain systems of wind power generators, in particular to a method for replacing main bearing grease used in drive chains of wind turbines. Background technique [0002] In wind turbines, the main shaft of the drive chain supports the hub and blades and transmits torque and speed. As the supporting and rotating part of the main shaft, the performance of the main bearing not only determines the transmission efficiency of the drive chain, but also determines the operation and maintenance cost of the drive chain. In the structural form of the drive chain, two-point and three-point supports are more common. In the two-point support structure, the main shaft is supported by double main bearings, while in the three-point support structure, the main shaft is supported by a single main bearing. Whether it is two-point support or three-point support, the inner ring of the main bearing is an interference fit...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a main bearing grease replacement method for the fan drive chain, through the replacement of the old main bearing grease in the bearing seat cavity, to solve the problem of grease aging caused by the long-term failure of old grease to be discharged in the prior art Hardening, affecting the life of the main bearing and other issues

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