Device for locking high-speed bearing

Abstract

The invention discloses a device for locking a high-speed bearing. The device comprises a locking screw nut, a lock washer and an elastic collar, wherein the locking screw nut comprises a main body which is screwed with outer threads in a shaft; first anti-loose teeth parallel to the axis are arranged on the outer threads; a plurality of convex blocks which face outwards in the radial direction and the axial direction are arranged on the outer circumference wall of the main body; a groove for accommodating the elastic collar is formed in the inner wall of the axial part of the convex blocks; a plurality of radial bosses are formed in the outer circumference wall of the lock washer; a notch for accommodating the radial bosses is formed between every two adjacent convex blocks; second anti-loose teeth meshed with the first anti-loose teeth are arranged on the inner side wall of the lock washer; the outer diameter of the lock washer is smaller than or equal to the largest distance between the inner walls of the parts facing outwards in the axial direction, of two convex blocks; the distance between the inner side walls close to the end parts of the parts facing outwards in the axial direction, of the convex blocks, of the groove to the end surface where the main body is connected with the convex blocks, is greater than or equal to the sum of the thicknesses of the lock washer and the elastic collar. The device has the advantages that the locking moment is not changed.

Description

technical field [0001] The invention relates to a locking device for high-speed bearings (referring to bearings whose rotation speed reaches 60 meters per second and above), which is used for axial locking of high-speed bearings, and is especially suitable for the torque resistance of power shafts. The part with higher requirements is a key part of the power transmission part, which prevents the axial movement of the bearing when it rotates at a high speed. The invention belongs to general mechanical technology. Background technique [0002] With the increasing demand for general equipment, the application of high-speed bearings in equipment is becoming more and more extensive. At the same time, the demand for a better solution to the axial locking problem of high-speed bearings is becoming more and more urgent. The rapid development of the technology has prompted various scientific research units to invest a lot of manpower and material resources in the research of the key ...

AI Technical Summary

Problems solved by technology

The disadvantage of this device is that after the tightening torque is measured, the nut needs to be readjusted so that the nut hole is aligned with the groove of the transmission shaft, because the 9 grooves on the shaft and the 8 holes of the nut need to have at least one pair of hole grooves corresponding to each other, so that they can be fixed with a safety ring , and the process of adjusting the nut will inevitably lead to changes in the locking torque, resulting in a deviation between the locking torque and the value in the technical requirements, and the assembly efficiency is relatively low, the structure of the entire locking device is not compact, and it is inconvenient to maintain; One disadvantage is that due to the groove on the shaft, the torsional performance of the shaft is reduced, which greatly reduces the service life and safety performance of the shaft

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