CN215110094U - Bearing retainer - Google Patents

Abstract

The utility model discloses a bearing retainer, which comprises an annular main body, pockets and fabrication holes, wherein the fabrication holes are arranged in the annular main body and are positioned between the adjacent pockets, a central line parallel to the axial direction of the annular main body is arranged between the adjacent pockets, and the fabrication holes are symmetrically arranged along the central line; a plurality of process holes are correspondingly formed in the same annular main body, and are uniformly arranged at intervals along the circumferential direction of the annular main body. The utility model discloses processing out the fabrication hole with balanced bulk strength on cyclic annular sheet material for when antifriction bearing rotated, the bearing kept the centrifugal force that receives, inertial force distributes in overall structure balancedly, avoided the bearing to keep the ware because of the uneven atress that appears of intensity skew, vibrations, noise, wearing and tearing, bad workings such as fracture, guaranteed that antifriction bearing can normal operating steadily, improved antifriction bearing's life, avoid frequent change and maintenance, make equipment can be normal, long-term use.

Description

Bearing retainer

Technical Field

The utility model relates to a bearing technical field specifically is a bearing retainer.

Background

Cage (i.e., bearing cage, also known as a bearing retainer) refers to a bearing component that partially encases all or part of the rolling elements and moves with them to isolate the rolling elements and generally also guide and retain them within the bearing. When the rolling bearing works, particularly when the load is complex and the rolling bearing rotates at high speed, the retainer bears large centrifugal force, impact and vibration, large sliding friction exists between the retainer and the rolling bearing, and a large amount of heat is generated. The combined effect of force and heat can lead to cage failure, and in severe cases, can cause cage burn and fracture. Therefore, the material of the retainer is required to have good thermal conductivity, good wear resistance, small friction coefficient, smaller density, certain strength and toughness matching, better elasticity and rigidity, expansion coefficient similar to that of the rolling body and good processing property. In addition, the cage is subjected to chemical agents such as lubricants, lubricant additives, organic solvents, coolants, and the like.

The existing bearing retainer is bent into a ring shape by a whole structural plate, then pocket holes are processed on an annular plate material, after the pocket holes are processed on the annular plate material, the structural strength of the pocket hole positions is greatly reduced before being compared with the pocket holes, the strength of the plate material part between the adjacent pocket holes still keeps the strength of the original annular plate material, the strength of the plate material part near the pocket holes is smaller than that of the plate material part between the adjacent pocket holes, the strength of the whole retainer is enabled to be unbalanced, when the bearing acts in a rotating mode, when the retainer bears larger centrifugal force, after impact and vibration, the problem of unbalanced strength easily causes the retainer to break and other faults, is a main factor for limiting the service life of the retainer, and urgent need to be solved.

SUMMERY OF THE UTILITY MODEL

The utility model provides a bearing retainer processes out the fabrication hole with balanced bulk strength on cyclic annular sheet material for when antifriction bearing rotated, centrifugal force, the inertia force that the bearing holder received distributed in overall structure balancedly, avoided the bearing holder because of the uneven atress that appears of intensity bad workings phenomenon such as skew, vibrations, noise, wearing and tearing, fracture, still reduced the weight of holder, make the holder lightweight, solved the technical problem explained in the above-mentioned background art effectively.

For solving the technical problem, the utility model adopts the following technical scheme:

a bearing retainer comprises an annular main body, pockets and process holes, wherein the process holes are formed in the annular main body and are located in the parts between the adjacent pockets, a central line parallel to the axial direction of the annular main body is formed between the adjacent pockets, and the process holes are symmetrically formed along the central line; the annular main body is provided with a plurality of process holes correspondingly, and the plurality of process holes are uniformly arranged at intervals along the circumferential direction of the annular main body.

When the rolling bearing works, the inner rolling bodies are positioned in the bearing retainer, the rolling bodies are equidistantly separated in the pockets by the bearing retainer and are uniformly distributed on the periphery of the rolling bearing, so that the rolling bodies can be guided by the bearing retainer to rotate on a correct track and are retained in the rolling bearing, and the rolling bearing bears uniform load and operates quietly and at a constant speed. The rolling element and the bearing retainer all can receive the centrifugal force towards the antifriction bearing outside in the antifriction bearing course of operation, the effect of inertial force, if each position intensity of bearing retainer is uneven this moment, will bring the centrifugal force that different positions received on the bearing retainer, inertial force distributes unevenly, lead to bearing retainer skew in the bearing, rock, bump with the bearing inner and outer lane, frictional wear and generate heat, and then cause the rolling element to take place to vibrate, the load is uneven, cause the part in the bearing to take place destructive slip each other, friction and vibrations, can cause part burn and breakdown when serious, cause antifriction bearing normal use.

The unbalanced intensity of bearing holder mainly is because structural strength between pocket position and each pocket is inhomogeneous to cause, the fabrication hole is add to the part of this application between adjacent pocket, specifically, have between the adjacent pocket along the central line that is on a parallel with cyclic annular main part axial direction, the fabrication hole sets up along this central line symmetry, it is equipped with a plurality of fabrication holes that set up along the even interval of cyclic annular main part circumferencial direction to correspond in the cyclic annular main part, make structural strength between pocket position and each pocket balanced from this, further just can make the structural strength distribution uniform balance of each part of the cyclic annular main part of bearing holder.

By last, this scheme makes the annular main part of bearing holder have the pocket hole that holds the rolling element and the fabrication hole of balanced strength for bearing holder overall structure intensity distribution is balanced, and at antifriction bearing during operation, the centrifugal force that the bearing holder received, inertial force evenly distributed have avoided foretell adverse reaction at each position, can guarantee that antifriction bearing can normal operating steadily, has improved antifriction bearing's life, avoids frequent change and maintenance, makes equipment can be normal, long-term use.

Furthermore, the fabrication hole is a circular hole, and the center of the circular hole coincides with the center line.

Furthermore, the fabrication hole is an elliptical hole, and a long axis or a short axis of the elliptical hole is overlapped with the central line.

Further, the center line has an O point closest to the centers of two adjacent pockets, the center line has an a point and a B point intersecting with the edge of the annular body, the a point and the B point have the same first strength, the O point has a second strength, the first strength is greater than the second strength, a strength change curve can be formed from the a point to the O point to the B point, a half of the sum of the first strength and the second strength is set as a third strength, in the strength change curve, the third strength corresponds to a P1 point and a P2 point, the P1 point is located between the a point and the O point, the P2 point is located between the B point and the O point, and the process holes are located at the P1 point and/or the P2 point.

Furthermore, the inner side hole wall of the fabrication hole is provided with an inwards concave storage part.

Furthermore, the storage part is provided with grooves, and at least two grooves are uniformly arranged at intervals along the circumferential direction of the inner side hole wall of the fabrication hole.

Furthermore, the storage part is provided with at least two inner holes which are uniformly arranged at intervals along the inner hole wall of the fabrication hole.

Further, the storage portion is provided with a through hole provided along a radial direction of the annular body, and the through hole communicates the outside of the bearing holder with the storage portion.

Furthermore, the through hole is correspondingly arranged on the side wall of the storage part close to the bearing inner ring.

Furthermore, the through hole is correspondingly arranged on the side wall of the storage part far away from the bearing inner ring.

The beneficial effect of this application does:

1. the fabrication hole is add to the part between adjacent pocket, specifically, have between the adjacent pocket along the central line that is on a parallel with cyclic annular main part axis direction, the fabrication hole sets up along this central line symmetry, it is equipped with a plurality of fabrication holes that set up along the even interval of cyclic annular main part circumferencial direction to correspond in the cyclic annular main part, make the structural strength balance between pocket position and each pocket from this, further make the structural strength distribution uniform balance of each part of the cyclic annular main part of bearing retainer, avoided the retainer to appear structural wear because of the intensity distribution is unbalanced in the bearing operation process.

2. The process holes are arranged at the points P1 and/or P2, the positions of the process holes are accurately and effectively positioned, and the uniform balance of the structural strength distribution of each part of the annular main body of the bearing retainer is facilitated.

3. The inner side hole wall of the fabrication hole is provided with the concave storage part for enlarging the flowing space of the grease, so that the grease flows smoothly, the grease can drive foreign matters to flow, and the foreign matters are effectively prevented from being among parts in the bearing.

4. The storage part is provided with a through hole which is arranged along the radial direction of the annular main body, and the through hole further enlarges the flowing space of the grease and is beneficial to guiding the grease to enter the storage part.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:

fig. 1 is a schematic structural diagram of an exemplary embodiment of the present invention;

fig. 2 is a schematic structural view of a fabrication hole in an exemplary embodiment of the present invention;

fig. 3 is a graph showing the strength variation of the bearing holder on the center line of the process hole according to an exemplary embodiment of the present invention;

fig. 4 is a schematic structural diagram of a storage portion according to an exemplary embodiment of the present invention;

fig. 5 is a schematic structural view of a storage portion according to an exemplary embodiment of the present invention;

fig. 6 is a schematic structural view of a through hole in an exemplary embodiment of the present invention;

fig. 7 is a schematic structural view of a through hole in an exemplary embodiment of the present invention;

1. an annular body; 2. a pocket hole; 3. a fabrication hole; 4. a storage section; 5. a through hole.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings, wherein the same reference numerals in the drawings denote the same components or similar components.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

Referring to fig. 1, a bearing retainer includes an annular main body 1, pockets 2, and process holes 3, the process holes 3 are disposed in the annular main body 1 and located between adjacent pockets 2, a center line parallel to an axial direction of the annular main body 1 is disposed between adjacent pockets 2, and the process holes 3 are symmetrically disposed along the center line; a plurality of process holes 3 are correspondingly arranged on the same annular main body 1, and the process holes 3 are uniformly arranged at intervals along the circumferential direction of the annular main body 1.

When the rolling bearing works, the inner rolling bodies are positioned in the bearing retainer, the rolling bodies are equidistantly separated in the pockets 2 by the bearing retainer and are uniformly distributed on the periphery of the rolling bearing, so that the rolling bodies can be guided by the bearing retainer to rotate on a correct track and are retained in the rolling bearing, and the rolling bearing bears uniform load and operates quietly and at a constant speed. The rolling element and the bearing retainer all can receive the centrifugal force towards the antifriction bearing outside in the antifriction bearing course of operation, the effect of inertial force, if each position intensity of bearing retainer is uneven this moment, will bring the centrifugal force that different positions received on the bearing retainer, inertial force distributes unevenly, lead to bearing retainer skew in the bearing, rock, bump with the bearing inner and outer lane, frictional wear and generate heat, and then cause the rolling element to take place to vibrate, the load is uneven, cause the part in the bearing to take place destructive slip each other, friction and vibrations, can cause part burn and breakdown when serious, cause antifriction bearing normal use.

The unbalanced intensity of bearing holder is mainly because structural strength between 2 positions in the pocket and each pocket 2 inequality causes, fabrication hole 3 is add to the part of this application between adjacent pocket 2, specifically, have between adjacent pocket 2 along the central line that is on a parallel with 1 axis direction of cyclic annular main part, fabrication hole 3 sets up along this central line symmetry, it is equipped with along a plurality of fabrication holes 3 of 1 circumferencial direction uniform spacing setting of cyclic annular main part to correspond on the cyclic annular main part 1, make the structural strength balance between 2 positions in the pocket and each pocket 2 from this, further just can make the structural strength distribution uniform balance of each part of the cyclic annular main part 1 of bearing holder.

By last, this scheme makes the annular main part 1 of bearing holder have pocket 2 and the fabrication hole 3 of balanced intensity that holds the rolling element for bearing holder overall structure intensity distribution is balanced, at antifriction bearing during operation, the centrifugal force that the bearing holder received, inertial force evenly distributed has avoided foretell adverse reaction at each position, can guarantee that antifriction bearing can normal operating steadily, has improved antifriction bearing's life, avoid frequent change and maintenance, make equipment can be normal, long-term use.

Referring to fig. 2, the fabrication hole 3 is a circular hole, and the center of the circular hole coincides with the center line. Therefore, the positioning accuracy of the process holes 3 is improved, the strength distribution balance of the annular main body 1 is effectively ensured, and the loads of all parts of the annular main body 1 are balanced when the rolling bearing rotates.

As a further optimization choice for the process holes 3, the process holes 3 are elliptical holes, and the major axis or minor axis of the elliptical holes coincides with the center line. Therefore, the positioning accuracy of the process holes 3 is improved, and the strength distribution balance of the annular main body 1 is effectively ensured, so that when the rolling bearing rotates, the load of each part of the annular main body 1 is balanced; the process holes 3 are set to be different in shape, so that the applicability of the product can be improved, and the process holes 3 in different shapes can be designed according to different requirements such as size requirements and applied to different occasions.

Referring to fig. 2 and 3, the center line has an O point nearest to the centers of two adjacent pockets 2, the center line has an a point and a B point intersecting the edge of the ring body 1, the a point and the B point have the same first intensity, the O point has a second intensity, the first intensity is greater than the second intensity, the a point to the O point to the B point can form an intensity variation curve as shown in fig. 3, a half of the sum of the first intensity and the second intensity is set as a third intensity, in the intensity variation curve, the third intensity corresponds to a point P1 and a point P2, the point P1 is between the a point and the O point, the point P2 is between the B point and the O point, and the fabrication hole 3 is correspondingly set at the point P1 and/or the point P2.

Thereby, the strength (third strength) of the positions (P1 point and/or P2 point) of the process holes 3 is equalized with the strength of the portions of the ring-shaped main body 1 between the pockets 2, further making the strength distribution of the respective portions of the ring-shaped main body 1 uniformly balanced.

Referring to fig. 4, the inner hole wall of the fabrication hole 3 is provided with an inward concave storage part 4. The storage part 4 is used for storing grease and foreign matters, can increase the flowing space of the grease in the rolling bearing, ensures that the grease flows smoothly, enhances the lubricating property, enhances the rolling property of the rolling body, reduces the friction of each part in the rolling bearing, and reduces the abrasion and the heating; the bearing retainer provides a gathering space for foreign matter particles entering the bearing from the outside or caused by wear and fracture of parts in the bearing, prevents the foreign matter from being clamped between the pocket 2 and the inner rolling body of the bearing or between the annular main body 1 and the inner ring and the outer ring of the bearing, prevents the rolling body from rolling, prevents the bearing retainer from running retardation and generating additional load, and avoids deterioration circulation.

Referring to fig. 5, the storage portions 4 are formed as grooves, and at least two grooves are uniformly spaced along the circumferential direction of the inner hole wall of the fabrication hole 3. Therefore, the processing and the manufacturing are convenient, and the integral structural balance of the bearing retainer is further ensured. Those skilled in the art to which the present application relates will appreciate that the grooves may be segmented or continuous, and the bottom surfaces of the grooves may be sloped, etc.

Referring to fig. 4, the storage part 4 is an inner hole, and at least two inner holes are uniformly spaced along the inner hole wall of the fabrication hole 3. Thereby, not only the storage part 4 is provided, but also the whole structure balance of the bearing retainer is further ensured.

Referring to fig. 6, the storage portion 4 is provided with a through-hole 5 provided along the radial direction of the ring-shaped body 1, and the through-hole 5 communicates the outside of the bearing holder with the storage portion 4. Therefore, the storage space of the grease is increased, the fluidity of the grease is improved, the gathering, flowing and circulating of the grease are guided, and the lubricating effect is improved. A storage space for the foreign matter is also increased so that the foreign matter can be introduced into the storage part 4 and stored by centrifugal force, inertial force.

Referring to fig. 6, the through-hole 5 is correspondingly provided in the side wall of the reservoir 4 near the bearing inner race. Thereby, the grease storage space between the bearing holder and the bearing inner ring is increased, the fluidity of grease between the bearing holder and the bearing inner ring is improved, and grease and foreign matter between the bearing holder and the bearing inner ring are guided to enter the storage portion 4.

Referring to fig. 7, the through-hole 5 is provided in a side wall of the storage portion 4 away from the bearing inner race. Thereby, the grease storage space between the bearing holder and the bearing outer ring is increased, the fluidity of grease between the bearing holder and the bearing outer ring is improved, and grease and foreign matter between the bearing holder and the bearing outer ring are guided to enter the storage portion 4.

As can be appreciated by those skilled in the art given the present application, the through-holes 5 may also be provided in both side walls of the reservoir 4 facing the bearing inner ring and the bearing outer ring. The shape of the through-hole 5 may be various forms such as a straight-through type and an arc type.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

The above are merely examples of the present invention, and are not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (10)

1. A bearing retainer comprises an annular main body and pockets, and is characterized by further comprising process holes, wherein the process holes are formed in the annular main body and are located at the parts between the adjacent pockets, a central line parallel to the axial direction of the annular main body is formed between the adjacent pockets, and the process holes are symmetrically formed along the central line; the annular main body is provided with a plurality of process holes correspondingly, and the plurality of process holes are uniformly arranged at intervals along the circumferential direction of the annular main body.

2. The bearing retainer of claim 1, wherein the process bore is configured as a circular bore having a center coincident with the centerline.

3. A bearing retainer according to claim 1 wherein said tooling holes are provided as elliptical holes having their major or minor axes coincident with said centerline.

4. A bearing retainer according to claim 1 wherein the centre line has a point O nearest the centre of two adjacent pockets, the centre line has a point a and a point B intersecting the annular body rim, the points a and B have the same first strength, the point O has a second strength, the first strength is greater than the second strength the points a to B are capable of forming a strength variation curve, half the sum of the first and second strengths is set to a third strength, in the strength variation curve the third strength corresponds to a point P1 and a point P2, the point P1 is between the points a and O, the point P2 is between the points B and O, and the process holes are located at the points P1 and/or P2.

5. The bearing retainer of claim 1, wherein the inner bore wall of the fabrication bore is provided with a recessed reservoir.

6. The bearing retainer of claim 5, wherein the reservoir is provided as a groove disposed circumferentially along an inner bore wall of the fabrication bore.

7. The bearing retainer of claim 5 wherein said reservoir is provided as an internal bore, said internal bore being provided in at least two spaced evenly spaced locations along an inner bore wall of said fabrication bore.

8. A bearing retainer according to claim 6 or 7, wherein the reservoir is provided with a through-hole arranged radially of the annular body, the through-hole communicating the exterior of the retainer with the reservoir.

9. The bearing retainer of claim 8, wherein the through-hole is correspondingly disposed adjacent to a sidewall of the reservoir of the bearing inner race.

10. The bearing retainer of claim 8, wherein the through-hole is correspondingly disposed in a sidewall of the reservoir portion remote from the bearing inner race.

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