Bearing nut locking structure
A technology of locking structure and bearing nuts, which is applied in the direction of nuts, bearing components, shafts and bearings, etc., can solve the problems of large axial dimension space, thin thickness, and low reliability of imitation loosening, so as to reduce the difficulty of production process and reduce the Production cost, the effect of simplifying the locking structure
Active Publication Date: 2020-11-03
AECC HUNAN AVIATION POWERPLANT RES INST
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The locking plate needs to be bent and deformed after assembly, which is easy to produce initial cracks. Its thickness is thin, and the reliability of imitation looseness is low. The pin structure requires a large axial dimension space
These can no longer meet the reliability and maintenance support requirements of the fourth-generation aero-engines
Method used
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[0032] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solution of the present disclosure may be practiced without one or more of the specific details, or other components, devices, etc. may be used. In other instances, well-known technical solutions have not been shown or described...
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The invention relates to a bearing nut locking structure which comprises a shaft, a nut and a locking ring. The outer circumferential surface of the shaft comprises a threaded section and a locking section in the axial direction, and a first positioning structure is arranged on the outer circumferential surface of the locking section; the nut is used for being in threaded connection with the shaftthrough the threaded section, a plurality of locking grooves are formed in the nut, and clamping grooves are formed in the positions, located between the adjacent locking grooves, of the side wall ofan inner ring of the nut; the locking ring comprises a locking ring body, limiting blocks and a second positioning structure, the locking ring body comprises an inner ring and an outer ring, and theinner ring is provided with the second positioning structure matched with the first positioning structure so as to limit the locking ring to be arranged on the locking section in a sleeving manner todo circumferential movement relative to the shaft; the limiting blocks are connected with the outer ring of the lock ring body and used for being arranged in the locking grooves so as to limit the locking ring to be arranged on the locking section in a sleeving manner to do circumferential movement relative to the nut; and the locking ring body is located in the clamping grooves and limits axial movement of the locking ring relative to the shaft. The bearing nut locking structure provided by the invention can effectively prevent the nut from circumferentially rotating on the shaft.
Description
technical field [0001] The present disclosure relates to the technical field of aero-engines, in particular to a bearing nut locking structure. Background technique [0002] The shaft nut of an aero-engine cannot be loosened during the entire life cycle of the engine, so as to ensure that the axial compression of the shaft is in a normal working state, and the shaft nut is prone to self-loosening under the action of alternating loads and vibrations in the working state, so large Some shaft nuts are mechanically locked to ensure that the shaft nuts will not loosen. [0003] Most of the shaft nuts of aero-engines are locked with lock pieces or pins. The two locking structures require that the shaft nut grooves / holes correspond to the journal grooves / holes. Otherwise, the extruded end faces of the shaft nuts need to be ground to ensure that the lock pieces or Assembly of pins; cleats or pins are destructively disassembled and cannot be reused. The locking plate needs to be be...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F16C35/08F16B39/08
CPCF16C35/08F16B39/08Y02E10/72
Inventor 聂建豪
Owner AECC HUNAN AVIATION POWERPLANT RES INST