CN-121993498-A - Self-lubricating weight-reducing bearing retainer and use method thereof

CN121993498ACN 121993498 ACN121993498 ACN 121993498ACN-121993498-A

Abstract

The invention discloses a self-lubricating weight-reducing bearing retainer and a use method thereof, belonging to the technical field of bearing retainers, and comprising a retainer matrix, wherein the retainer matrix is annular and is provided with a plurality of pockets for accommodating rolling bodies, the pockets are uniformly arranged along the annular interval of the retainer matrix by a set distance, and connecting beams are arranged between the adjacent pockets for fixedly connecting; the bottom of the retainer matrix is provided with a grease storage cavity structure corresponding to the connecting beam, the part of the grease storage cavity structure corresponding to the connecting beam is provided with a first through hole, the connecting beam is provided with a second through hole, a variable-diameter runner is arranged between the first through hole and the second through hole, and lubricating grease is arranged in the grease storage cavity structure and the variable-diameter runner. The invention reduces the dead weight of the bearing retainer so as to reduce centrifugal load, realizes self-adaptive long-acting lubrication along with working conditions, reduces vibration friction, thereby improving the service stability, prolonging the service life and reducing noise.

Inventors

ZHENG GUANGHUI
ZHENG JINYU
ZHAO PEIZHEN
Wen Chunguo

Assignees

山东金帝精密机械科技股份有限公司

Dates

Publication Date: 20260508
Application Date: 20260210

Claims (10)

1. The self-lubricating weight-reducing bearing retainer is characterized by comprising a retainer substrate, wherein the retainer substrate is annular and is provided with a plurality of pockets for accommodating rolling bodies, the pockets are uniformly arranged along the annular interval of the retainer substrate, connecting beams are arranged between the adjacent pockets and fixedly connected, the bottom of the retainer substrate is provided with a grease storage cavity structure corresponding to the connecting beams, the part of the grease storage cavity structure corresponding to the connecting beams is provided with a first through hole, the connecting beams are provided with a second through hole, a variable-diameter runner is arranged between the first through hole and the second through hole, and lubricating grease is arranged in the grease storage cavity structure and the variable-diameter runner.
2. The self-lubricating weight-reducing bearing retainer of claim 1, wherein the bottom of the retainer body is provided with raised structures corresponding to the pocket locations, respectively.
3. The self-lubricating weight reduction bearing retainer of claim 1, wherein the first through bore has a diameter greater than the diameter of the second through bore.
4. The self-lubricating weight reduction bearing retainer of claim 1, wherein the variable diameter flow passage is configured to taper in diameter from the first through hole to the second through hole.
5. The self-lubricating weight reduction bearing retainer of claim 1, wherein the second through-holes are provided in the radial direction of the retainer body on the outer side wall of the connecting beam.
6. The self-lubricating weight loss bearing retainer of claim 1, wherein said grease is configured such that the solid-liquid phase transition temperature range of said grease matches the expected operating temperature rise range of said bearing retainer.
7. The self-lubricating weight-reducing bearing retainer of claim 1, wherein said retainer matrix is formed from a high strength lightweight composite material.
8. The self-lubricating weight-reducing bearing retainer of claim 1, wherein the connecting beams have a radial thickness along the retainer body that is less than the radial thickness of the pockets along the retainer body, and wherein the connecting beams are spaced from the inner periphery of the retainer body a distance consistent with the connecting beams being spaced from the outer periphery of the retainer body.
9. The self-lubricating weight-reducing bearing retainer of claim 1, wherein the pockets are arranged in an annular strip-shaped structure, the inner contours of the pockets are matched with the outer contours of the rolling bodies, and the top of the pockets is provided with an opening structure.
10. A method of using a self-lubricating weight-reducing bearing retainer according to any one of claims 1 to 9, comprising: Grease is arranged in the grease storage cavity structure and the variable flow channel, and the retainer matrix is installed at a designated position and is assembled with the rolling bodies for use; in the use process, the retainer matrix enhances the fluidity of the lubricating grease due to temperature rise, and under the action of centrifugal force, the lubricating grease with enhanced fluidity flows from the grease storage cavity structure to the outside through the first through hole, the reducing runner and the second through hole, and lubricates the rolling bodies.

Description

Self-lubricating weight-reducing bearing retainer and use method thereof Technical Field The invention relates to the technical field of bearing retainers, in particular to a self-lubricating weight-reducing bearing retainer and a use method thereof. Background The cage is used as one of the core parts of the rolling bearing, and has the main functions of uniformly separating the rolling bodies and guiding the rolling bodies to roll correctly so as to prevent mutual collision. In the field of household appliances, for example, in the application scene of a cross-flow fan motor of a household air conditioner indoor unit, a bearing is required to bear a certain rotating speed and load, and has small vibration noise and rotation stability during operation, and meanwhile, the bearing is convenient and fast to maintain. In the above scenario, the design of the bearing cage is particularly critical, and its weight, lubrication and structural strength are directly related to the overall performance of the bearing. The existing retainer is large in self weight, and obvious centrifugal force is generated when the retainer rotates at a high speed, so that additional load between the rolling bodies and the roller path is increased, friction vibration is aggravated, and noise is easy to occur after long-term use. Meanwhile, the current retainer lubricating mode mainly depends on the fact that solid lubricant is mixed in advance during molding or a certain amount of lubricating grease is smeared in a pocket area before assembly, if the precoated lubricating grease is too much or has higher viscosity in the cold starting stage of the bearing, the lubricating grease is difficult to rapidly distribute in a key raceway contact area to cause starting abrasion, the smearing is too little or uneven, friction vibration is easy to occur in the using process of the bearing, and when the bearing rotates at a high speed, the centrifugal force is easy to throw away the lubricating grease from a working interface, so that partial lubrication is insufficient and the smearing is uneven, and effective lubrication of the bearing is difficult to be ensured for a long time. In addition, in the long-term running process of the static lubrication storage, grease can be gradually dried, so that friction is increased, abnormal noise is generated, the abnormal noise cannot be supplemented, and finally, the bearing is forced to fail in advance or is required to be disassembled and maintained in a stopping mode, so that the service life is greatly shortened. Disclosure of Invention Aiming at the problems existing in the prior art, the invention provides the self-lubricating weight-reducing bearing retainer and the use method thereof, so that the dead weight of the bearing retainer is reduced, the centrifugal load is reduced, the self-adaptive long-acting lubrication along with the working condition is realized, the vibration friction is reduced, the use stability is improved, the service life is prolonged, and the noise is reduced. The technical scheme of the invention is as follows: In a first aspect of the invention, a self-lubricating weight-reducing bearing retainer is provided, and comprises a retainer substrate, wherein the retainer substrate is annular and is provided with a plurality of pockets for accommodating rolling bodies, the pockets are uniformly arranged along the annular interval of the retainer substrate by a set distance, connecting beams are arranged between the adjacent pockets for fixing connection, a fat storage cavity structure is arranged at the bottom of the retainer substrate, corresponding to the connecting beams, a first through hole is arranged at the position of the fat storage cavity structure, corresponding to the connecting beams, a second through hole is arranged on the connecting beams, a variable-diameter runner is arranged between the first through hole and the second through hole, and lubricating grease is arranged in the fat storage cavity structure and the variable-diameter runner. In some embodiments of the invention, the bottom of the retainer matrix is provided with a convex structure corresponding to the pocket position. In some embodiments of the invention, the diameter of the first through hole is greater than the diameter of the second through hole. In some embodiments of the invention, the variable flow channel is configured to gradually decrease in diameter from the first through hole to the second through hole. In some embodiments of the invention, the second through-hole is provided on an outer sidewall of the connection beam in a radial direction of the cage base body. In some embodiments of the invention, the grease is configured such that the solid-liquid phase transition temperature range of the grease matches the expected operating temperature rise range of the bearing cage. In some embodiments of the invention, the cage matrix is made of a high strength, lightweight composite material. In