Sectional type bearing retainer

Abstract

The utility model discloses a sectional type bearing retainer, and relates to the technical field of bearings. Comprising a first annular frame body which is provided with a first inner wall face and a first outer wall face which extend in the circumferential direction of a retainer segment and are in a cylindrical segment shape; the second annular frame body is provided with a second inner wall surface and a second outer wall surface which extend in the circumferential direction of the retainer segment and are in a cylindrical segment shape; the multiple bridging pieces are connected between the first annular frame body and the second annular frame body at intervals in the circumferential direction of the retainer subsection; the side, in the radial direction of the retainer segment, of the first inner wall face protrudes out of the second inner wall face, and the side, in the radial direction of the retainer segment, of the bridging piece extends to be flush with the first inner wall face. A gap part extending in the circumferential direction of the retainer segment is formed between the bridging piece and the second inner wall surface; more sufficient lubrication between the rolling body and the retainer is realized, the lubrication effect is enhanced, and the service life of the bearing is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearings, and in particular relates to a segmented bearing retainer. Background Art

[0002] A bearing retainer, also known as a bearing keeper, is a bearing component that partially encases all or part of the rolling elements and moves with them, isolating them and typically guiding and retaining them within the bearing. When used in applications with large bearing diameters and widths, a single retainer is difficult to manufacture and process. Therefore, existing bearing retainers include a special type of retainer: a segmented bearing retainer. This structure consists of multiple independent retainers, each capable of independent movement. Multiple segmented bearing retainers can be distributed continuously along the circumference of the bearing, meeting the needs of large-diameter bearing applications, such as in the wind power sector.

[0003] Due to the large size of bearings and their installation in complex working conditions, the lubrication effect of each segmented cage in the bearing is not ideal. Existing segmented bearing cages are designed by setting oil holes in the inner ring or outer ring of the bearing, through which lubricating oil enters the segmented bearing cage. Since too many oil holes will also affect the strength of the bearing, the number of oil holes is limited, resulting in insufficient lubrication of the segmented bearing cage. Moreover, during high-speed operation, it is impossible to ensure that the lubricating oil can be fully pushed to the surface of the rolling element. Usually, under the action of high centrifugal force, the lubricating oil at the edge of the cage cannot enter the space between the rolling element and the cage in time, resulting in insufficient lubricating oil supply. Due to the inadequate lubrication, the space between the rolling element and the bearing cage becomes dry, resulting in severe dry wear between the rolling element and the bearing cage, which makes the rolling element unable to function normally, and thus causes the entire bearing to fail. Utility Model Content

[0004] The utility model provides a segmented bearing cage to solve the problem that the existing method of providing oil holes through the inner and outer rings of the bearing to introduce lubricating oil into the segmented cage for lubrication causes insufficient distribution of lubricating oil. The lubricating oil is easily unable to enter the space between the rolling elements and the cage in time due to the high centrifugal force, resulting in insufficient supply of lubricating oil between the rolling elements and the cage.

[0005] The technical solution adopted by this utility model is:

[0006] A segmented bearing retainer, comprising:

[0007] A first annular frame body having a first inner wall surface and a first outer wall surface in a cylindrical segment shape extending along the circumference of the retainer segment;

[0008] A second annular frame body having a second inner wall surface and a second outer wall surface in a cylindrical segment shape extending along the circumference of the retainer segment;

[0009] a bridge member, wherein a plurality of the bridge members are connected between the first annular frame body and the second annular frame body at intervals along the circumferential direction of the retainer segment;

[0010] The first inner wall surface protrudes from the second inner wall surface on one side along the radial direction of the retaining frame segment, and the bridge member extends on one side along the radial direction of the retaining frame segment to be flush with the first inner wall surface, so that a notch portion extending along the circumferential direction of the retaining frame segment is formed between the bridge member and the second inner wall surface.

[0011] The rolling element bearing cage of the utility model also has the following additional technical features:

[0012] A first connecting groove is provided at one end of the bridge member facing inward in the radial direction of the retainer segment. The width direction of the first connecting groove extends a preset distance in the radial direction of the retainer segment.

[0013] Guide arc surfaces for guiding lubricating oil are formed on inner walls on both sides of the first connecting groove along the circumferential direction of the retaining frame segment.

[0014] The bridging member is provided with a second connecting groove at one end facing outward in the radial direction of the retaining frame segment. The length direction of the second connecting groove extends along the axial direction of the retaining frame segment, and the width direction of the second connecting groove extends a preset distance along the radial direction of the retaining frame segment.

[0015] The second connecting groove forms guiding inclined surfaces on both sides along the axial direction of the retaining frame segment, and the projections of the guiding inclined surfaces on both sides along the radial direction of the retaining frame segment are trumpet-shaped structures.

[0016] The first annular frame and the second annular frame define the retainer segment in the radial direction. The first annular frame and the second annular frame are distributed at a preset distance in the axial direction. An accommodating cavity for accommodating rolling elements is formed between the first annular frame and the second annular frame.

[0017] A plurality of cavities for mounting the rolling bodies are distributed in the accommodating cavity along the circumferential direction of the retaining frame segment, and two adjacent cavities are separated by the bridging member.

[0018] Both side walls of the cavity along the circumferential direction of the retaining frame segment are formed with connecting portions for enclosing the rolling elements.

[0019] The connecting portion comprises a planar portion and a curved portion connected along a radial direction of the retaining frame segment, the planar portion is used to wrap the rolling element, and the curved portion comprises an arc-shaped connecting surface capable of locking the rolling element.

[0020] The distance between the arc-shaped connecting surfaces on both sides along the circumferential direction of the retainer segment gradually decreases from the inner side to the outer side of the retainer segment.

[0021] Due to the adoption of the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0022] 1. The first annular frame and the second annular frame constitute the main structure of the entire cage segment and play a supporting role for the rolling elements; the first annular frame and the second annular frame are connected by a bridge piece to further enhance the connection strength of the entire cage segment; and the bridge piece is arranged in the cage segment at intervals along the circumference of the bearing cage segment to reserve space for the bearing rolling elements; after processing the outer diameter of the bearing cage, the first inner wall surface of the first annular frame is arranged to protrude from the second inner wall surface of the second annular frame in the radial direction of the bearing cage, and is located between the first annular frame and the second annular frame. The bridge piece between the two ends of the bearing cage is connected to the support frame, and one side of the bridge piece in the radial direction of the cage segment is extended to be flush with the first inner wall surface, that is, the height value of the first annular frame along the radial direction of the bearing cage segment is consistent with the height value of the bridge piece in the radial direction of the bearing cage segment, so that the bridge piece protrudes from the second annular frame body in the radial direction of the bearing cage, so that a height difference is formed between the bridge piece and the second inner wall surface of the second annular frame body, resulting in a notch portion between the second annular frame body and the bridge piece, thereby achieving a lightweight design of the bearing cage while ensuring the strength of the entire bearing cage segment;

[0023] Moreover, the provision of the notch portion can further expand the flow area of ​​the lubricating oil between the rolling elements and the bearing retainer segments. Since the notch portion is formed, the lubricating oil flowing on the surface of the retainer segment can smoothly enter between the bridge piece and the rolling elements through the notch, further enhancing the lubrication effect; thereby achieving more sufficient lubrication between the rolling elements and the retainer, thereby enhancing the lubrication effect and reducing the wear caused by the sliding friction between the rolling elements and the retainer; and the notch portion can increase the heat dissipation area, improve the heat dissipation effect, and can fully take away the heat between the retainer and the rolling elements, thereby increasing the service life of the bearing; the design with the notch portion can also achieve the bearing retainer segment having an asymmetric style of reduced glue on one side, which can be adapted to special special-shaped bearings, and the stable installation of the bearing retainer segment can be achieved by connecting with the notch portion.

[0024] 2. As a preferred embodiment, a first connecting groove is provided at one end of the bridge member facing inward in the radial direction of the retainer segment, and the width direction of the first connecting groove extends a predetermined distance in the radial direction of the retainer segment. The purpose of providing the first connecting groove at the one end of the bridge member facing inward in the radial direction of the retainer segment is to both partially store lubricating oil, allowing for timely replenishment of lubricating oil so that the rolling elements between the bridge members are fully lubricated, and to reduce the overall weight of the retainer segment, making it more suitable for high-speed rotation applications. Furthermore, the inward opening of the first connecting groove further increases the heat dissipation area, thereby improving the heat dissipation effect of the bearing.

[0025] 3. As a preferred embodiment, the first connecting groove has guide arc surfaces formed on both inner walls along the circumferential direction of the retainer segment for guiding lubricating oil. The provision of these guide arc surfaces within the first connecting groove accelerates lubrication of lubricating oil as it enters and exits the first connecting groove, thereby further improving lubrication efficiency and ensuring sufficient lubrication between the rolling elements and the retainer segment.

[0026] 4. As a preferred embodiment, a second connecting groove is provided at one end of the bridge member facing outward in the radial direction of the retainer segment. The length direction of the second connecting groove extends along the axial direction of the retainer segment, and the width direction of the second connecting groove extends a predetermined distance in the radial direction of the retainer segment. The purpose of providing the second connecting groove at the end of the bridge member facing outward in the radial direction of the retainer segment is to both partially store lubricating oil, allowing for timely replenishment of lubricating oil so that the rolling elements between the bridge members are fully lubricated, and to reduce the overall weight of the retainer segment, making it more suitable for high-speed rotation applications. In addition, the second connecting groove, because it has an outward opening, further increases the heat dissipation area, thereby improving the heat dissipation effect of the bearing.

[0027] 5. As a preferred embodiment, the second connecting groove forms arcuate transition surfaces on both sides along the axis of the retainer segment, and the projections of the arcuate transition surfaces on both sides along the radial direction of the retainer segment have a trumpet-shaped structure. By providing the second connecting groove with arcuate transition surfaces on both sides, the transition surfaces have an arcuate structure, and the projections of the arcuate transition surfaces along the radial direction of the retainer segment have a trumpet-shaped structure, so that the lubricating oil can smoothly diffuse toward the periphery of the retainer segment along the shape of the arcuate transition surfaces, further accelerating lubrication and improving the lubrication effect. Furthermore, by providing the second connecting groove, the overall weight of the retainer segment can be further reduced while ensuring the overall strength of the retainer segment, thereby achieving a lightweight design of the retainer segment, making it more adaptable to high-speed rotation fields and improving the applicability of the retainer segment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0029] Figure 1 This is a side structural diagram of a segmented bearing retainer at a certain angle under one embodiment of the present invention;

[0030] Figure 2 This is a side structural diagram of a segmented bearing retainer from another angle under one embodiment of the present invention;

[0031] Figure 3 This is a top view of a segmented bearing retainer according to one embodiment of the present invention;

[0032] Figure 4 for Figure 3 Middle AA cross-sectional view;

[0033] In the figure,

[0034] 1 first annular frame, 2 second annular frame, 3 bridge member, 4 first inner wall surface, 5 first outer wall surface, 6 second inner wall surface, 7 second outer wall surface, 8 first connecting groove, 9 second connecting groove, 10 cavity, 11 connecting portion, 12 guide arc surface, 13 guide inclined surface, 14 arc-shaped connecting surface. DETAILED DESCRIPTION

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0036] In addition, in the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] In this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0038] In the present invention, unless otherwise clearly specified and limited, the first feature "above" or "below" the 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 "implementation method", "embodiment", "one embodiment", "example" or "specific example" 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 invention. In this specification, the schematic expressions of the above terms do 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.

[0039] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.

[0040] The utility model relates to a segmented bearing retainer, such as Figure 1-4 As shown, it includes a first annular frame body 1, having a first inner wall surface 4 and a first outer wall surface 5 in a cylindrical segment shape extending along the circumference of the retaining frame segment; a second annular frame body 2, having a second inner wall surface 6 and a second outer wall surface 7 in a cylindrical segment shape extending along the circumference of the retaining frame segment; a bridge member 3, a plurality of bridge members 3 are connected between the first annular frame body 1 and the second annular frame body 2 at intervals along the circumference of the retaining frame segment; the first inner wall surface 4 protrudes from the second inner wall surface 6 on one side along the radial direction of the retaining frame segment, and the bridge member 3 on one side along the radial direction of the retaining frame segment extends to be flush with the first inner wall surface 4, so that a notch portion extending along the circumference of the retaining frame segment is formed between the bridge member 3 and the second inner wall surface 6.

[0041] The first annular frame body 1 and the second annular frame body 2 constitute the main structure of the entire cage segment, and play a supporting role for the rolling elements; the first annular frame body 1 and the second annular frame body 2 are connected by a bridge member 3 to further enhance the connection strength of the entire cage segment; and the bridge member 3 is arranged in the cage segment along the circumferential interval of the bearing cage segment to reserve space for the bearing rolling elements; after processing the outer diameter of the bearing cage, the first inner wall surface 4 of the first annular frame body 1 is protruded from the second inner wall surface 6 of the second annular frame body 2 in the radial direction of the bearing cage, and is located between the first annular frame body 1 and the second annular frame body 2 One side of the bridge member 3 along the radial direction of the cage segment extends to be flush with the first inner wall surface 4, that is, the height value of the first annular frame body 1 along the radial direction of the bearing cage segment is consistent with the height value of the bridge member 3 along the radial direction of the bearing cage segment, so that the bridge member 3 protrudes from the second annular frame body 2 along the radial direction of the bearing cage, so that a height difference is formed between the bridge member 3 and the second inner wall surface 6 of the second annular frame body 2, resulting in a notch portion between the second annular frame body 2 and the bridge member 3, thereby achieving a lightweight design of the bearing cage while ensuring the strength of the entire bearing cage segment;

[0042] Moreover, the provision of the notch portion can further expand the flow area of ​​the lubricating oil between the rolling element and the bearing retainer segment. Since the notch portion is formed, the lubricating oil flowing on the surface of the retainer segment can smoothly enter between the bridge member 3 and the rolling element through the notch, further enhancing the lubrication effect; thereby achieving more sufficient lubrication between the rolling element and the retainer, thereby enhancing the lubrication effect and reducing the wear caused by the sliding friction between the rolling element and the retainer; and the notch portion can increase the heat dissipation area, improve the heat dissipation effect, and can fully take away the heat between the retainer and the rolling element, thereby increasing the service life of the bearing; the design with the notch portion can also achieve the bearing retainer segment having an asymmetric style of reduced glue on one side, which can be adapted to special special-shaped bearings, and the stable installation of the bearing retainer segment can be achieved by connecting with the notch portion.

[0043] As a preferred embodiment, Figure 1 As shown, the bridge member 3 is provided with a first connecting groove 8 at one end facing inward in the radial direction of the retaining frame segment. The width direction of the first connecting groove 8 extends a preset distance in the radial direction of the retaining frame segment.

[0044] The purpose of setting the first connecting groove 8 at the inner end of the bridge member 3 in the radial direction of the retaining frame segment is to realize the partial storage function of the lubricating oil, and to replenish the lubricating oil in time so that the rolling elements between the bridge members 3 are fully lubricated, and to reduce the overall weight of the entire retaining frame segment, so as to be more suitable for high-speed rotation application scenarios. Moreover, the first connecting groove 8 will further increase the heat dissipation area because it has an opening facing inward, thereby improving the heat dissipation effect of the bearing.

[0045] As a preferred embodiment, Figure 4 As shown, guide arc surfaces 12 for guiding lubricating oil are formed on the inner walls of both sides of the first connecting groove 8 along the circumferential direction of the retaining frame segment.

[0046] By providing the guide arc surface 12 inside the first connecting groove 8, the lubricating oil can be accelerated to lubricate under the guidance of the guide arc surface 12 when entering and exiting the first connecting groove 8, thereby further improving the lubrication efficiency and ensuring that the rolling elements and the retaining frame segments are fully lubricated.

[0047] As a preferred embodiment, Figure 2 As shown, the bridging member 3 is provided with a second connecting groove 9 at one end facing outward in the radial direction of the retaining frame segment. The length direction of the second connecting groove 9 extends along the axial direction of the retaining frame segment, and the width direction of the second connecting groove 9 extends a preset distance along the radial direction of the retaining frame segment.

[0048] The purpose of setting the second connecting groove 9 at the end of the bridge member 3 facing outward in the radial direction of the retaining frame segment is to realize the partial storage function of the lubricating oil, and to replenish the lubricating oil in time so that the rolling elements between the bridge members 3 are fully lubricated, and to reduce the overall weight of the entire retaining frame segment, so as to be more suitable for high-speed rotation application scenarios. Moreover, the second connecting groove 9 will further increase the heat dissipation area because it has an opening facing outward, thereby improving the heat dissipation effect of the bearing.

[0049] As a preferred embodiment, Figure 2 and Figure 4 As shown, the second connecting groove 9 forms guiding inclined surfaces 13 on both sides along the axial direction of the retaining frame segment, and the projections of the guiding inclined surfaces 13 on both sides along the radial direction of the retaining frame segment are trumpet-shaped structures.

[0050] By arranging guide slopes 13 on both sides of the second connecting groove 9, the guide slopes 13 have a planar structure, and the projection of the guide slopes 13 along the radial direction of the retaining frame segment is a trumpet-shaped structure, so that the lubricating oil can smoothly diffuse toward the surrounding of the retaining frame segment along the shape of the guide slopes 13, further accelerating the lubrication and improving the lubrication effect; further, by arranging the second connecting groove 9, the overall weight of the retaining frame segment can be further reduced while ensuring the overall strength of the entire retaining frame segment, thereby realizing a lightweight design of the retaining frame segment, being more adaptable to the field of high-speed rotation, and improving the applicability of the retaining frame segment.

[0051] As a preferred embodiment, Figure 1-3 As shown, the first annular frame 1 and the second annular frame 2 define the retaining frame segment in the radial direction, the first annular frame 1 and the second annular frame 2 are distributed at a preset distance in the axial direction, and an accommodating cavity for accommodating rolling elements is formed between the first annular frame 1 and the second annular frame 2.

[0052] The first annular frame body 1 and the second annular frame body 2 constitute the main structure of the entire bearing retainer segment. The size of the retainer segment in the radial direction is limited by the size of the first annular frame body 1 and the second annular frame body 2. The first annular frame body 1 and the second annular frame body 2 are located in the same radial plane and are axially separated by a preset distance to form an accommodating cavity. The formed accommodating cavity can accommodate multiple rolling elements between the first annular frame body 1 and the second annular frame body 2.

[0053] As a preferred embodiment, Figure 1 and Figure 3 As shown, a plurality of cavities 10 for mounting the rolling bodies are distributed in the accommodating cavity along the circumference of the retaining frame segment, and two adjacent cavities 10 are separated by the bridge member 3 .

[0054] There are multiple cavities 10 in the accommodating cavity along the circumferential direction of the retaining frame segment. Each cavity 10 is used to install a rolling body, and two adjacent cavities 10 are separated by a bridge 3. When in use, the rolling body is installed and positioned through the cavity 10 by shifting it from one side of the cavity 10 to the inside of the cavity 10.

[0055] As a preferred embodiment, two side walls of the cavity 10 along the circumferential direction of the retaining frame segment are formed with connecting portions 11 for enclosing the rolling elements.

[0056] like Figure 1 and Figure 3As shown in , the two circumferential side walls of the cavity 10 along the retainer segment have connecting portions 11, which can hold the rolling elements within the cavity 10. Preferably, the connecting portion 11 has a planar portion and a curved portion connected along the radial direction of the retainer segment. The planar portion is used to wrap the rolling elements, and the curved portion has an arc-shaped connecting surface 14 that can lock the rolling elements. During use, the rolling elements are shifted from one side of the planar portion to the curved connecting surface 14 of the curved portion within the cavity 10 to limit the rolling elements in the radial direction. The arc-shaped connecting surfaces 14 are symmetrically arranged to form an enclosed structure, which can lock the retainer and prevent the retainer from detaching from the radial arc-shaped connecting surface 14. The two axial side walls of the cavity 10 limit the axial position of the rolling elements.

[0057] As a preferred embodiment, Figure 4 As shown, the spacing between the arc-shaped connecting surfaces 14 on both sides along the circumferential direction of the cage segment gradually decreases from the inner side to the outer side of the cage segment. By setting the spacing between the arc-shaped connecting surfaces 14 on both sides along the circumferential direction of the cage segment to gradually decrease from the inner side to the outer side of the cage segment, the purpose is to achieve the purpose of retaining the rolling elements and preventing them from radially escaping from the bearing cage segment from one side of the arc-shaped connecting surface 14. At the same time, it can further enclose the rolling elements to ensure that they are locked and positioned, and can further increase the surrounding area of ​​the rolling elements, further achieving rolling element protection. At the same time, it can also increase the lubrication area, thereby increasing the service life of the entire cage segment.

[0058] Anything not described in this utility model can be achieved by adopting or drawing on existing technologies.

[0059] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0060] The above description is merely an embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of the claims of the present invention.

Claims

1. A segmented bearing retainer, characterized in that: include: A first annular frame body having a first inner wall surface and a first outer wall surface in a cylindrical segment shape extending along the circumference of the retainer segment; A second annular frame body having a second inner wall surface and a second outer wall surface in a cylindrical segment shape extending in the circumferential direction of the retainer segment; A bridge member, wherein a plurality of the bridge members are connected between the first annular frame body and the second annular frame body at intervals along the circumferential direction of the retainer segment; One side of the first inner wall surface along the radial direction of the retaining frame segment protrudes beyond the second inner wall surface, and one side of the bridging member along the radial direction of the retaining frame segment extends to be flush with the first inner wall surface, so that a notch portion extending along the circumferential direction of the retaining frame segment is formed between the bridging member and the second inner wall surface.

2. A segmented bearing retainer according to claim 1, characterized in that: A first connection groove is provided at one end of the bridge member facing inward in the radial direction of the retaining frame segment. The width direction of the first connection groove extends a preset distance in the radial direction of the retaining frame segment and does not penetrate the bridge member.

3. A segmented bearing retainer according to claim 2, characterized in that: Guide arc surfaces for guiding lubricating oil are formed on inner walls on both sides of the first connecting groove along the circumferential direction of the retaining frame segment.

4. A segmented bearing retainer according to claim 1, characterized in that: A second connecting groove is provided at one end of the bridge member facing outward in the radial direction of the retaining frame segment, the length direction of the second connecting groove extends along the axial direction of the retaining frame segment, and the width direction of the second connecting groove extends a preset distance in the radial direction of the retaining frame segment and does not penetrate the bridge member.

5. A segmented bearing retainer according to claim 4, characterized in that: The second connecting groove forms guiding inclined surfaces on both sides along the axial direction of the retaining frame segment, and the projections of the guiding inclined surfaces on both sides along the radial direction of the retaining frame segment are in a trumpet-shaped structure.

6. A segmented bearing retainer according to claim 1, characterized in that: The first annular frame body and the second annular frame body define the retaining frame segment in the radial direction. The first annular frame body and the second annular frame body are distributed at a preset distance in the axial direction. An accommodating cavity for accommodating rolling bodies is formed between the first annular frame body and the second annular frame body.

7. A segmented bearing retainer according to claim 6, characterized in that: A plurality of cavities for mounting the rolling bodies are distributed in the accommodating cavity along the circumferential direction of the retaining frame segment, and two adjacent cavities are separated by the bridging member.

8. A segmented bearing retainer according to claim 7, characterized in that: Both side walls of the cavity along the circumferential direction of the retaining frame segment are formed with connecting parts for enveloping the rolling body.

9. A segmented bearing retainer according to claim 8, characterized in that: The connecting portion comprises a planar portion and a curved portion connected along the radial direction of the retaining frame segment, the planar portion is used to wrap the rolling body, and the curved portion comprises an arc-shaped connecting surface capable of locking the rolling body.

10. A segmented bearing retainer according to claim 9, characterized in that: The spacing between the arc-shaped connecting surfaces on both sides along the circumferential direction of the retainer segment gradually decreases from the inner side to the outer side of the retainer segment.

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