Welding bearing retainer

Abstract

The invention discloses a welded bearing retainer which comprises a first ring beam, a second ring beam and a plurality of bent window beams, and pocket holes used for installing rotating bodies are formed between every two adjacent bent window beams and the first ring beam and between every two adjacent bent window beams and the second ring beam in a surrounding mode. The bent window beam comprises a bent part as well as a first part and a second part which are symmetrically arranged at two ends of the bent part; first oil passing grooves are formed in one sides, facing the pockets, of the first ring beam and the second ring beam; the sides, facing the pockets, of the first part and the second part are provided with first pressing slopes, each bent part comprises a linear section and bent sections at the two ends of the linear section, the sides, facing the pockets, of the bent sections are provided with second pressing slopes, the sides, facing the pockets, of the linear sections are further provided with oil passing slopes, and oil passing gaps are formed between the oil passing slopes and the rotating body. And the bending section is provided with an arc-shaped bending structure. By adopting the structure, the flowability of lubricating grease can be improved, the lubricating effect of the retainer is improved, the rotating friction loss is reduced, and the durability and safety of the whole bearing structure are improved.

Description

Technical Field

[0001] The present application belongs to the technical field of bearing retainers, and in particular relates to a welded bearing retainer. Background Art

[0002] Cylindrical roller bearings are radial rolling bearings with cylindrical rollers. The internal structure of cylindrical roller bearings adopts parallel arrangement of rollers, and spacer cages or spacers are installed between the rollers. The bearing cage is a spacer structure that keeps the individual rolling elements of the rolling element bearing evenly spaced around the race.

[0003] The ordinary cylindrical roller bearings used in the current prior art have a large torque, a large contact area between the roller and the cage, and relatively large friction, which will shorten the life of the entire bearing. There is a disclosed technology that designs the pocket window beam as a cage in a bent shape, but in actual use, the contact area between the upper and lower ends of the cage and the upper and lower end faces of the roller is large and there is a problem of insufficient lubrication, which increases the friction between the roller and the cage and is very easy to heat up. The roller is also prone to axial movement, resulting in unstable contact between the roller and the upper and lower ends of the cage, and easily produces irregular axial impacts on the cage, causing the structural strength of the cage to drop rapidly, affecting the normal use of the cage and even the bearing. In addition, the existing bent window beam has an inclined surface at the bend, which is very likely to cause stress concentration problems. The window beam is at a very high risk of breaking when it is constantly in contact with the roller and is squeezed and impacted by the roller;

[0004] In addition, the existing welding cage processing technology usually includes the early stamping processing of window holes and window beams and the later processing steps of curling, welding, etc., and the early stamping processing in the existing welding cage processing technology usually requires multiple positioning and clamping, which easily leads to large cumulative errors and affects the processing accuracy and efficiency.

[0005] This shows that the prior art still has certain defects. Summary of the invention

[0006] The present application provides a welded bearing retainer to solve at least one of the above technical problems.

[0007] The technical solution adopted in this application is:

[0008] A welded bearing retainer, comprising a first ring beam, a second ring beam, and a plurality of bent window beams arranged between the first ring beam and the second ring beam, wherein pockets for installing a rotating body are surrounded between two adjacent bent window beams and the first ring beam and the second ring beam; the bent window beam comprises a bent portion and a first portion and a second portion symmetrically arranged at both ends of the bent portion, and a first oil groove is arranged on one side of the first ring beam and the second ring beam facing the pockets;

[0009] The first part and the second part are provided with a first pressure slope surface on the side facing the pocket hole, the bending part includes a straight line segment and bending segments at both ends of the straight line segment, the bending segment is provided with a second pressure slope surface on the side facing the pocket hole, the straight line segment is also provided with an oil-passing inclined surface on the side facing the pocket hole, an oil-passing gap is provided between the oil-passing inclined surface and the rotating body, and the bending section has an arc-shaped bending structure.

[0010] As a preferred embodiment of the present application, one or more second oil grooves are provided on the side of the first ring beam and the second ring beam away from the pocket.

[0011] As a preferred embodiment of the present application, a first arcuate transition surface is provided on the side of the bending section facing the pocket, and a second arcuate transition surface is provided on the side of the bending section facing the inside of the welded bearing retainer and on the side away from the inside of the welded bearing retainer.

[0012] As a preferred embodiment of the present application, a first matching portion is provided at one end of the first part close to the first ring beam, and a second matching portion is provided at one end of the second part close to the second ring beam, and the first matching portion and the second matching portion have shapes adapted to the shape of the end of the rotating body.

[0013] As a preferred embodiment of the present application, along the radial direction, the projection width of the bent portion is not greater than the projection widths of the first portion and the second portion.

[0014] As a preferred embodiment of the present application, the first pressure slope surface has a first contact area that contacts and cooperates with the rotating body, and the second pressure slope surface has a second contact area that contacts and cooperates with the rotating body, and the second contact area is smaller than the first contact area.

[0015] As a preferred embodiment of the present application, the first pressure slope surface and the second pressure slope surface are provided with a wear-resistant layer.

[0016] As a preferred embodiment of the present application, a wear-resistant layer is provided on one side of the first ring beam and the second ring beam facing the pocket.

[0017] As a preferred embodiment of the present application, in the radial direction, the bent window beam protrudes toward the inner side of the retaining frame or the bent window beam protrudes toward the outer side of the retaining frame.

[0018] As a preferred embodiment of the present application, the first ring beam and the second ring beam are provided with an annular groove and a plurality of axial transition grooves connected to the annular groove on one side facing the inside of the welded bearing retainer, and the axial transition groove is provided corresponding to the pocket hole; one end of the axial transition groove is connected to the annular groove, and the other end is connected to the pocket hole or the first oil groove.

[0019] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0020] 1. Compared with the traditional retainer, the friction contact area between the rotating body and the retainer is greatly reduced. The first oil groove, the second oil groove, the oil slope, the annular groove and the axial transition groove are arranged so that the lubricating grease can flow easily and smoothly between the rotating body, the pocket hole and the inner and outer rings of the bearing, thereby reducing the friction between the rotating body and the retainer and the inner and outer rings of the bearing. This is beneficial to reducing the wear of the rotating body and the retainer, extending the service life of the rotating body and the retainer, and also beneficial to reducing the irregular movement of the rotating body and the retainer when the bearing rotates, maintaining the stability of the rotation path of the rotating body to ensure the stability of the shaft rotation, and also beneficial to reducing the noise generated during the rotation of the bearing. By adopting the above structure, the material and weight of the retainer can be reduced, thereby reducing the impact load between the retainer, the rotating body and the inner and outer rings of the bearing during the use of the bearing, which is beneficial to improving the durability and safety of the entire bearing structure.

[0021] 2. The oil gap between the oil-passing slope and the rotating body presents a structural design with a larger opening toward the inside of the cage and a smaller opening away from the inside of the cage. This arrangement can meet the needs of lubricating grease flow while maximally concentrating the lubricating grease on the inside of the cage to improve the utilization rate of the lubricating grease, which can not only ensure the lubrication effect but also reduce the loss of lubricating grease. Moreover, this arrangement is also conducive to ensuring the structural strength of the bent part in the middle of the bent window beam, and further ensuring the supporting and limiting effect of the cage on the rotating body.

[0022] 3. By adopting the welded bearing retainer structure in the present application, the fluidity of lubricating grease between the rotating body, retainer, inner and outer rings of the bearing can be improved, thereby improving the lubrication effect of the retainer, reducing the friction loss of the rotating body, retainer, inner and outer rings of the bearing and lubricating grease, and improving the durability and safety of the rotating body, retainer and the entire bearing structure.

[0023] 4. In the above scheme, by setting the first oil groove and the second oil groove, it can play an auxiliary positioning role in the early stamping process of the welding retainer, which is convenient for continuous processing, thereby reducing the errors caused by multiple clamping and positioning, which is beneficial to improving the stamping accuracy and processing efficiency. At the same time, the first oil groove and the second oil groove can also play an auxiliary positioning role in the subsequent rolling welding process, which is beneficial to ensure the roundness of the rolling forming of the retainer and the welding accuracy and welding quality, and ultimately it is beneficial to improve the structural strength of the entire welding retainer. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0025] Figure 1 A schematic diagram of the structure of a welded bearing cage in an example;

[0026] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of part A;

[0027] Figure 3 A schematic diagram of the structure of the cooperation between the rotating body and the welded bearing cage in an example;

[0028] Figure 4 for Figure 3 A schematic diagram of the enlarged structure of part B;

[0029] Figure 5 A schematic diagram of a partial structure of a welded bearing cage in another example;

[0030] Figure 6 This is a schematic diagram of the structure of a welded bearing cage in another example.

[0031] List of parts and reference numerals:

[0032] 11 first ring beam, 12 second ring beam, 13 first oil groove, 14 pocket hole, 15 annular groove, 16 axial transition groove, 17 second oil groove;

[0033] 2 bending window beam, 21 bending part, 211 straight section, 2111 oil passing inclined surface, 212 bending section, 2121 second pressure slope surface, 2122 first arc transition surface, 2123 second arc transition surface, 22 first part, 221 first matching part, 23 second part, 231 second matching part, 24 first pressure slope surface, 25 oil passing gap;

[0034] 3 rotating bodies. DETAILED DESCRIPTION

[0035] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0036] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features in each embodiment may be combined with each other without conflict.

[0037] In addition, in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0038] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0040] Reference Figure 1-Figure 5 As shown, the present application discloses a welded bearing retainer, which mainly includes a first ring beam 11, a second ring beam 12, and a plurality of bent window beams 2 arranged between the first ring beam 11 and the second ring beam 12, and pockets 14 for installing a rotating body 3 are surrounded between two adjacent bent window beams 2 and the first ring beam 11 and the second ring beam 12. Figure 2 As shown, the bending window beam 2 includes a bending portion 21 and a first portion 22 and a second portion 23 symmetrically arranged at both ends of the bending portion 21, the first portion 22 is connected to the first ring beam 11, and the first ring beam and the second ring beam are provided with a first oil groove on the side facing the pocket. Preferably, the second portion 23 is connected to the second ring beam 12, and the first oil groove 13 is provided at the connection between the first ring beam 11 and the first portion 22 and the connection between the second ring beam 12 and the second portion 23, the first portion 22 and the second portion 23 are provided with a first pressure slope surface 24 that contacts and cooperates with the rotating body 3 on the side facing the pocket 14, the bending portion 21 is provided with a second pressure slope surface 2121 that contacts and cooperates with the rotating body 3 on the side facing the pocket 14, and the bending portion 21 is also provided with an oil slope surface 2111 on the side facing the pocket 14, and there is an oil gap 25 between the oil slope surface 2111 and the rotating body 3.

[0041] In the above scheme, when the rotating body 3 is installed in the pocket 14, the side surface of the rotating body 3 contacts the aforementioned first pressure slope 24 and second pressure slope 2121. When the rotating body 3 rotates, friction only occurs between the first pressure slope 24, the second pressure slope 2121 and the first ring beam 11, the second ring beam 12. Compared with the traditional retaining frame, the friction contact area between the rotating body 3 and the retaining frame is greatly reduced. Through the arrangement of the first oil groove 13, the second oil groove 17 and the oil slope 2111, the lubricating grease can flow easily and smoothly between the rotating body 3, the pocket 14 and the inner and outer rings of the bearing, thereby reducing the friction between the rotating body 3 and the retaining frame and the inner and outer rings of the bearing. This is beneficial to reducing the wear of the rotating body 3 and the retaining frame, extending the service life of the rotating body 3 and the retaining frame, reducing the irregular movement of the rotating body 3 and the retaining frame when the bearing rotates, maintaining the stability of the rotation path of the rotating body 3 to ensure the stability of the shaft rotation, and reducing the noise generated during the rotation of the bearing.

[0042] In addition, by adopting the above-mentioned structure, it is possible to better adapt to the optimization of the welding bearing retainer process. In the existing welding bearing retainer processing process, it is usually necessary to undergo stamping processing of window holes, window beams and curling welding to complete the processing of a complete retainer. By setting the first oil groove 13 and the second oil groove 17, it can play an auxiliary positioning effect in the stamping process before the retainer welding, which is convenient for single clamping and continuous processing through a continuous die in the early stamping process, thereby helping to improve the accuracy and efficiency of the stamping process. The second oil groove 17 can also play an auxiliary positioning role in the process of curling welding of the retainer, which is beneficial to ensure the roundness of the retainer forming, and also beneficial to ensure the welding quality, and ultimately beneficial to improve the structural strength of the welded bearing retainer.

[0043] In one example, referring to Figure 2 and Figure 4As shown, the bending portion 21 includes a straight segment 211 and bending segments 212 at both ends of the straight segment 211, and the bending segment 212 has an arc-shaped bending structure. Figure 2 and Figure 4 As shown, a first arcuate transition surface 2122 is provided on the side of the connection between the bending section 212 and the first part 22 and the second part 23 facing the pocket hole 14, and a second arcuate transition surface 2123 is provided on the side of the bending section 212 facing the inside of the welded bearing retainer and the side away from the inside of the welded bearing retainer. This arrangement can enhance the effect of dispersing stress and avoid stress concentration in the bending section 212, which causes stress damage to the bending section 212.

[0044] Continue to refer to Figure 2 and Figure 4 As shown, the side of the bending section 212 facing the pocket hole 14 is provided with the aforementioned second pressure slope surface 2121, and the side of the straight section 211 facing the pocket hole 14 is provided with the aforementioned oil-passing inclined surface 2111. As a preferred embodiment of the present application, continue to refer to Figure 4 As shown, the oil gap 25 between the oil-passing inclined surface 2111 and the rotating body 3 presents a structural design with a large opening toward the inner side of the retainer and a small opening away from the inner side of the retainer. This arrangement is conducive to maximally concentrating the lubricating grease on the inner side of the retainer to improve the utilization rate of the lubricating grease while meeting the flow requirements of the lubricating grease. It can not only ensure the lubrication effect but also reduce the loss of the lubricating grease. Moreover, this arrangement is also conducive to ensuring the structural strength of the bent portion 21 in the middle of the bent window beam 2, and further ensuring the supporting and limiting effect of the retainer on the rotating body 3. It should be noted here that the above-mentioned oil-passing inclined surface 2111 and the setting of the oil-passing inclined surface 2111 are only a preferred embodiment of the present application. The structural setting of the bent portion 21 toward the side of the pocket 14 is not limited to the above-mentioned method. It can also continue to adopt the first oil-passing groove 13, oil-passing hole or other more different structural settings, and the present application does not make specific limitations on this.

[0045] It should also be noted that the present application does not specifically limit the bending direction of the bent window beam 2. It can adopt the structure bent toward the inner side of the cage in the above example, or it can adopt the structure bent toward the outer side of the cage to facilitate the use with the inner and outer sleeves of the bearings, that is, the bent portion 21 can protrude toward the inner side of the cage, or it can protrude toward the outer side of the cage. This setting method can meet the use needs of bearings of different specifications and improve the versatility of the welded bearing cage in the present application.

[0046] Continue to refer to Figure 2 and Figure 4As shown, the first part 22 is provided with a first matching portion 221 at one end close to the first ring beam 11, and the second part 23 is provided with a second matching portion 231 at one end close to the second ring beam 12. The first matching portion 221 and the second matching portion 231 have shapes adapted to the shape of the end of the rotating body 3. This arrangement can effectively improve the limiting and fixing effect of the pocket 14 on the rotating body 3, and reduce the unstable movement of the rotating body 3 during the rotation process. At the same time, continue to refer to Figure 2 and Figure 4 As shown, preferably, the first matching part 221 and the second matching part 231 adopt an arc structure, that is, the connection between the first pressure slope surface 24 and the first ring beam 11 and the second ring beam 12 adopts an arc transition. This arrangement can not only meet the need of the pocket 14 to limit the rotating body 3, but also avoid the stress concentration at the connection between the first part 22, the second part 23 and the first ring beam 11 and the second ring beam 12 caused by the setting of the first pressure slope surface 24, which is beneficial to ensure the structural strength of the entire retaining frame. It should also be noted here that the structure and arrangement of the above-mentioned first matching part 221 and the second matching part 231 are only an example of this application. The arrangement of the first matching part 221 and the second matching part 231 in this application is not limited to the above-mentioned example, and this application does not make specific limitations on this.

[0047] As a preferred embodiment of the present application, refer to Figure 1-Figure 4As shown, along the radial direction of the welded bearing retainer in the present application, the projection surface width of the bent portion 21 is smaller than the projection surface widths of the first portion 22 and the second portion 23. And along the axial direction of the welded bearing retainer in the present application, the lengths of the first portion 22 and the second portion 23 are each no greater than one-fifth of the total length of the bent window beam 2. This arrangement is beneficial to ensuring the connection strength between the bent window beam 2 and the first ring beam 11 and the second ring beam 12, thereby ensuring the stability of the entire retainer structure, and further ensuring the stability of the rotation path of the rotating body 3, and ensuring the long-term stable operation of the bearing. The first pressure slope surface 24 has a first contact area that contacts and cooperates with the rotating body 3, and the second pressure slope surface 2121 has a second contact area that contacts and cooperates with the rotating body 3, and the second contact area is smaller than the first contact area. By adopting this arrangement, the contact area between the position near the middle of the rotating body 3 that is most susceptible to wear and the bending part 21 can be reduced as much as possible, which can not only ensure that sufficient limiting support is provided for the rotating body 3, but also reasonably distribute the distribution of the contact area while reducing the friction contact area, so that the rotating body 3 can reduce the torque during rotation, can operate stably, and further extend the service life of the retainer. Preferably, the first pressure slope surface 24, the second pressure slope surface 2121, and the first ring beam 11, the second ring beam 12 are all provided with a wear-resistant layer on the side facing the pocket 14. The wear resistance of the contact position between the retainer and the rotating body 3 is further improved by providing a wear-resistant layer, and wear is reduced. It should also be noted here that the above are only some preferred embodiments of the present application. The structure of the bending part 21, the first pressure slope surface 24, the second pressure slope surface 2121, and the surface treatment of the first ring beam 11, the second ring beam 12 on the side facing the pocket 14 in the present application are not limited to the above-mentioned embodiments, and the present application does not make specific limitations on this. In addition, the material and setting method of the above-mentioned wear-resistant layer are also not specifically limited. It can be formed by non-metallic materials such as polyetheretherketone, ceramics, and alloy materials through processes such as electroplating, plastic dipping, laser surfacing, etc., or other more different settings can be used.

[0048] As a preferred embodiment of the present application, refer to Figure 6 As shown, one or more second oil passage grooves 17 are provided on the side of the first ring beam 11 and the second ring beam 12 away from the pocket hole 14. Preferably, the plurality of second oil passage grooves 17 are evenly spaced around the circumference of the first ring beam 11 and the second ring beam 12, and the opening size of the second oil passage grooves 17 is preferably set smaller than the opening size of the first oil passage groove 13. Figure 5As shown, the first ring beam and the second ring beam are provided with an annular groove 15 and a plurality of axial transition grooves 16 connected to the annular groove on one side facing the inside of the welded bearing retainer, and the axial transition groove 16 is provided corresponding to the pocket 14; one end of the axial transition groove 16 is connected to the annular groove 15, and the other end is connected to the pocket 14 or the first oil groove 13. The second oil groove 17, the annular groove and the axial transition groove are provided to facilitate the flow of lubricating grease, thereby further improving the lubrication effect of the welded bearing retainer structure in the present application, and the above-mentioned structure can reduce material and weight.

[0049] In summary, by adopting the welded bearing retainer structure in the present application, the fluidity of the lubricating grease between the rotating body 3, the retainer, and the inner and outer rings of the bearing can be improved, thereby improving the lubrication effect of the retainer, reducing the friction loss of the rotating body 3, the retainer, the inner and outer rings of the bearing and the lubricating grease, and can also effectively reduce the material and weight, further reduce the impact loss between the various parts during the use of the bearing, and improve the durability and safety of the rotating body 3, the retainer and the entire bearing structure.

[0050] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0051] Each embodiment in this specification is described in a progressive manner, and the same and similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A welded bearing cage, characterized in that: The invention comprises a first ring beam, a second ring beam and a plurality of bent window beams arranged between the first ring beam and the second ring beam, and pockets for installing a rotating body are surrounded between two adjacent bent window beams and the first ring beam and the second ring beam; the bent window beam comprises a bent portion and a first portion and a second portion symmetrically arranged at both ends of the bent portion, and a first oil groove is arranged on one side of the first ring beam and the second ring beam facing the pockets; The first part and the second part are provided with a first pressure slope surface on the side facing the pocket hole, the bending part includes a straight line segment and bending segments at both ends of the straight line segment, the bending segment is provided with a second pressure slope surface on the side facing the pocket hole, the straight line segment is also provided with an oil-passing inclined surface on the side facing the pocket hole, an oil-passing gap is provided between the oil-passing inclined surface and the rotating body, and the bending section has an arc-shaped bending structure.

2. The welded bearing retainer according to claim 1, characterized in that: One or more second oil-passing grooves are arranged on a side of the first ring beam and the second ring beam away from the pocket hole.

3. The welded bearing retainer according to claim 1, characterized in that: A first arcuate transition surface is arranged on the side of the bending section facing the pocket hole, and a second arcuate transition surface is arranged on the side of the bending section facing the inside of the welding bearing retainer and the side away from the inside of the welding bearing retainer.

4. The welded bearing retainer according to claim 1, characterized in that: A first matching portion is provided at one end of the first part close to the first ring beam, and a second matching portion is provided at one end of the second part close to the second ring beam. The first matching portion and the second matching portion have shapes adapted to the shape of the end of the rotating body.

5. The welded bearing retainer according to claim 1, characterized in that: In the radial direction, the projection width of the bent portion is not greater than the projection widths of the first portion and the second portion.

6. The welded bearing retainer according to claim 1, characterized in that: The first pressure ramp surface has a first contact area that contacts and cooperates with the rotating body, and the second pressure ramp surface has a second contact area that contacts and cooperates with the rotating body, and the second contact area is smaller than the first contact area.

7. The welded bearing retainer according to claim 1, characterized in that: The first pressure slope surface and the second pressure slope surface are provided with a wear-resistant layer.

8. The welded bearing retainer according to claim 1, characterized in that: A wear-resistant layer is provided on one side of the first ring beam and the second ring beam facing the pocket.

9. The welded bearing retainer according to claim 1, characterized in that: In the radial direction, the bent window beam protrudes toward the inner side of the retaining frame or the bent window beam protrudes toward the outer side of the retaining frame.

10. The welded bearing retainer according to claim 1, characterized in that: The first ring beam and the second ring beam are provided with an annular groove and a plurality of axial transition grooves connected to the annular groove on one side facing the inside of the welded bearing retainer, and the axial transition groove is provided corresponding to the pocket hole; one end of the axial transition groove is connected to the annular groove, and the other end is connected to the pocket hole or the first oil groove.

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