Cylindrical roller bearing inner ring anti-rotation structure

Abstract

The invention discloses a cylindrical roller bearing inner ring anti-rotation structure. The anti-rotation structure comprises a bearing outer ring, a retainer is fixedly mounted on the inner circumference of the bearing outer ring, a bearing inner ring is rotatably connected to the inner circumference of the retainer, and a cylindrical roller is arranged between the retainer and the bearing inner ring; and the cylindrical roller is used for keeping relative rotation between the bearing inner ring and the retainer, the end face of the bearing inner ring is provided with a plurality of sets of anti-rotation bosses and anti-rotation grooves, and the anti-rotation bosses and the anti-rotation grooves are used for being matched with connecting grooves and limiting protrusions which are correspondingly arranged on the connecting end face of a connecting shaft. According to the anti-rotation structure, the bearing structure is simple, assembly is convenient, relative rotation between the inner ring and a connecting shaft can be effectively prevented, and especially when the magnitude of interference between the bearing inner ring and the connecting shaft is insufficient due to changes of the working environment, the inner ring can be effectively prevented from rotating; and by using the structure, the magnitude of interference between the bearing inner ring and the connecting shaft can be properly reduced, so that the circumferential stress of a ferrule is reduced, and the use reliability of a product is improved.

Description

technical field [0001] The invention belongs to the technical field of aero-engines, and in particular relates to an anti-rotation structure for an inner ring of a cylindrical roller bearing. Background technique [0002] Usually, the inner ring of the rolling bearing and the shaft rotate together with an interference fit. Advanced turboshaft and turboprop engine rotors have the characteristics of high speed and high temperature in the bearing cavity, and the working environment of the bearing is harsh. The interference fit between the inner ring and the shaft will be affected by the centrifugal force of the rotor, the ambient temperature and the working load. Insufficient, when the relative rotation occurs between the inner ring and the shaft during the use of the bearing, it is not conducive to the normal operation of the bearing, and in severe cases it will cause the bearing to fail. Therefore, how to prevent the inner ring of the bearing from rotating relative to the sh...

AI Technical Summary

Problems solved by technology

[0010] Increasing the torque of the lock nut at the end face of the inner ring can prevent the inner ring of the bearing from rotating. Excessive locking torque at the end face of the inner ring will cause deformation of the thin-walled ring, and it is not conducive to disassembly during disassembly

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