Bearing axial clearance measuring device

Abstract

The invention provides a bearing axial clearance measuring device used for measuring the axial clearance of two double-column cylindrical roller bearings in a planet gear. The device comprises a support device, a lifting device, and a measuring device, the planet gear is supported by the supporting device so that an internal separating ring and an inner ring of an upper bearing are separated, the support device comprises a first force application portion and a second force application portion combined with outer rings of the two bearings, the first force application portion and the second force application portion apply acting forces with opposite directions to the outer rings of the two bearings so that the two outer rings are tightly contacted with a hole back-up ring and an outer separating ring, the lifting device comprises a lifting portion combined with an inner ring of a lower bearing and capable of lifting, the lifting portion upwardly lifts the inner ring of the lower bearing until a roller of the lower bearing is contacted with a blocking edge of the lower bearing, and the measuring device measures the distance of upward movement of the inner ring of the upper bearing during the movement of the lifting portion. According to the device, the structure is simple, the measurement is accurate, on-site operation is facilitated, and the carrying is convenient.

Description

technical field [0001] The invention relates to a bearing axial clearance measuring device, in particular to a measuring device for measuring the axial clearance of a double-row full complement cylindrical roller bearing in a planetary wheel in a wind power speed-up gearbox. Background technique [0002] Planetary gear transmission is widely used in wind power speed-up gearboxes due to its power splitting and compact structure. Planetary gear bearings in planetary gear transmissions are usually supported by two double-row full complement cylindrical roller bearings, which are arranged in the inner bore of the planetary gear. [0003] Double-row full complement cylindrical roller bearings include an outer ring with a rib on one side, an inner ring and two rows of rollers embedded in the inner ring. When the wind power speed-up gearbox is working, the planetary gear is under heavy load , the force on the planetary wheel is very large, therefore, two double-row full complement...

AI Technical Summary

Problems solved by technology

This method can only theoretically guarantee the axial clearance of the bearing in the planetary wheel when assembling the planetary wheel bearing, without considering the dimensional error of the ribs of the inner and outer rings of the bearing and the processing and measurement errors of the inner and outer spacers on the axial play of the bearing. Therefore, the value of the axial clearance of the bearing in the planetary gear calculated by measuring the size of the parts is inaccurate, and there is a certain error with the actual axial clearance value of the bearing in the planetary gear after assembly

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