Locally reinforced segmented retainer

Abstract

The locally-reinforced segmented retainer is composed of segmented retainer bodies made of engineering plastic materials and detachable wear-resistant metal reinforcing frames on the two sides of the segmented retainer bodies, and the wear-resistant metal reinforcing frames are used for wrapping the end faces, making contact with the adjacent segmented retainer bodies, of the two ends of the segmented retainer bodies and four corner areas. The main body made of the engineering plastic keeps the lightweight characteristic of the segmented retainer, the overall weight and energy consumption of the wind driven generator can be reduced, the wear-resistant metal reinforcing frame is only applied to high-collision areas, namely the end faces with the two ends making contact with adjacent segments and four corner areas, the strength and wear resistance of the key areas are improved, and the service life of the wind driven generator is prolonged. According to the segmented retainer, the overall service life of the segmented retainer is remarkably prolonged by improving the strength and the abrasion resistance of the key area, the longer service life means the longer maintenance period and the lower maintenance cost, and the segmented retainer has remarkable economic benefits for wind power occasions.

Description

Technical Field

[0001] This application belongs to the field of cages, and particularly relates to a locally reinforced segmented cage. Background Technology

[0002] With the rapid development of the new energy sector, the proportion of wind power in the power grid is constantly increasing, and the manufacturing of wind turbine main units is becoming more diversified. Among them, bearings, as a core component, are crucial to the operating efficiency and lifespan of the generator. Especially in high-power wind turbines, bearings need to withstand huge wind loads, resulting in increased size and weight. Traditional one-piece cages are prone to deformation, increasing friction and wear, and affecting bearing life.

[0003] To address this issue, segmented engineering plastic cages were developed. These cages, made of lightweight, high-strength engineering plastics, improve bearing rotational performance and reduce internal friction, making them widely used in high-power wind turbines. However, in practical use, segmented cage assemblies have experienced premature failure. This is mainly because during wind turbine operation, the bearings must withstand complex loads, including radial, axial, and even impact loads, leading to frequent collisions at the joints between the segmented cage assemblies, especially at corners where breakage is likely. Therefore, existing technology needs further improvement and enhancement. Utility Model Content

[0004] This invention provides a locally reinforced segmented retainer that solves the problem of easy breakage of existing segmented retainers in high-impact areas by combining a segmented retainer body made of engineering plastic with a wear-resistant metal reinforcement frame.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A locally reinforced segmented retainer consists of a segmented retainer body made of engineering plastic and detachable wear-resistant metal reinforcement frames on both sides. The wear-resistant metal reinforcement frames are used to wrap the end faces of the segmented retainer body that contact the adjacent segmented retainer bodies and the four corner areas, so as to improve the strength and wear resistance of the segmented retainer in high-impact areas and extend the overall service life.

[0007] The aforementioned structure, with its engineering plastic body maintaining the lightweight characteristics of the segmented cage, helps reduce the overall weight and energy consumption of the wind turbine. The wear-resistant metal reinforcement is only applied to high-impact areas, namely the end faces that contact adjacent segments and the four corner areas. This not only improves the strength and wear resistance of these critical areas but also avoids the weight increase brought about by overall metallization. By improving the strength and wear resistance of critical areas, the overall service life of the segmented cage is significantly extended. A longer service life means a longer maintenance cycle and lower maintenance costs, which has significant economic benefits for wind power applications.

[0008] In a preferred embodiment, the segmented retainer body includes two arc-shaped segments and multiple support beams connecting the two. The wear-resistant metal reinforcement frame includes a first reinforcing part that fits against the outer wall of the arc-shaped segment and a second reinforcing part that fits against the end face of the segmented retainer body. The corner of the segmented retainer body is located at the junction of the first reinforcing part and the second reinforcing part.

[0009] In a preferred embodiment, the segmented retainer body is provided with protrusions / grooves, and the metal reinforcement frame is provided with grooves / protrusions. The grooves and protrusions are connected to achieve the connection between the segmented retainer body and the wear-resistant metal reinforcement frame.

[0010] In a preferred embodiment, the groove is provided on the outer wall surface of the arc-shaped segment, and the protrusion is provided on the first reinforcing part.

[0011] In a preferred embodiment, the arc-shaped segmented outer wall has a high surface in the middle and inclined surfaces on both sides of the high surface. The groove is formed on the inclined surface and extends from one inclined surface to the other. The first reinforcing part can fit against the high surface and the inclined surface to prevent the wear-resistant metal reinforcement frame from detaching from the segmented retainer body.

[0012] In a preferred embodiment, the first reinforcing part includes a middle reinforcing part that conforms to the high surface and a bent reinforcing part that can be bent to conform to the inclined surface, with a protrusion provided on the middle reinforcing part.

[0013] The bent reinforcement is bent and attached to the inclined surface, preventing the protrusion from shifting vertically out of the groove. After bending, the reinforcement adheres to the inclined surface, forming a stable support structure together with the middle reinforcement. This design effectively prevents the wear-resistant metal reinforcement frame from detaching during prolonged use or under external forces.

[0014] In the preferred implementation, the thickness T of the wear-resistant metal reinforcement frame satisfies that 1 / 20 of the support beam thickness ≤ T ≤ 1 / 15 of the support beam thickness.

[0015] The thickness of the support beam is between 1 / 20 and 1 / 15, ensuring that the reinforcement frame is neither too thick, affecting the number of rolling elements it can accommodate, nor too thin, resulting in insufficient local reinforcement.

[0016] In a preferred embodiment, the second reinforcing part is higher than the end face of the segmented retainer body, and the protruding part can be bent to fit the inner or outer ring surface of the segmented retainer body to reduce contact wear between the segmented retainer body and the inner or outer ring surface.

[0017] In a preferred embodiment, the support beam is provided with an oil reservoir facing the inner / outer ring surface.

[0018] In a preferred embodiment, the second reinforcing part has a hollowed-out portion to reduce the weight of the cage. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain this application and do not constitute an undue limitation of the present invention. In the drawings:

[0020] Figure 1 A top view schematic diagram of one embodiment of the partially reinforced segmented retainer of this application is shown;

[0021] Figure 2 A schematic three-dimensional structural diagram illustrating one embodiment of the segmented retainer body of this application is shown.

[0022] Figure 3 A schematic three-dimensional structural diagram of one embodiment of the wear-resistant metal reinforcement frame of this application is shown;

[0023] Figure 4 A schematic three-dimensional structural diagram of one embodiment of the partially reinforced segmented retainer of this application is shown;

[0024] Label Explanation:

[0025] 1. Segmented retainer body; 10. Arc-shaped segment; 100. Groove; 101. High surface; 102. Inclined surface; 11. Support beam; 110. Oil reservoir; 2. Wear-resistant metal reinforcement frame; 20. First reinforcement; 200. Middle section reinforcement; 201. Bending reinforcement; 202. Protrusion; 21. Second reinforcement. Detailed Implementation

[0026] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit and scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0027] In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In this utility model, unless otherwise expressly specified and limited, the first feature being "upper" or "lower" than the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two main bodies at the connection point are not connected by an intermediate structure, but are simply connected to form a whole through a connecting structure. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0029] In this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0030] The present invention will now be described with reference to the accompanying drawings.

[0031] The specific solution adopted is as follows:

[0032] like Figure 1-4 As shown, this utility model provides a locally reinforced segmented retainer, which consists of a segmented retainer body 1 made of engineering plastic material and detachable wear-resistant metal reinforcement frames 2 on both sides. The wear-resistant metal reinforcement frames 2 are used to wrap the end faces of the segmented retainer body 1 that contact the adjacent segmented retainer body 1 and the four corner areas, so as to improve the strength and wear resistance of the segmented retainer in high-impact areas and extend the overall service life.

[0033] The locally strengthened segmented cage of the present application combines a segmented cage body 1 made of engineering plastic with a wear-resistant metal reinforcement frame 2. The engineering plastic body maintains the lightweight characteristic of the segmented cage, which helps to reduce the overall weight and energy consumption of the wind turbine. The wear-resistant metal reinforcement frame 2 is only applied to the high-collision areas, namely the end faces where the two ends contact the adjacent segments and the four corner areas. This not only enhances the strength and wear resistance of these key areas but also avoids the weight increase caused by overall metallization. By enhancing the strength and wear resistance of the key areas, the overall service life of the segmented cage is significantly extended. A longer service life means a longer maintenance cycle and lower maintenance costs, which has significant economic benefits for the wind power field.

[0034] See Figure 3 and Figure 4 , the segmented cage body 1 includes two arc segments 10 and multiple support beams 11 connecting the two. The wear-resistant metal reinforcement frame 2 includes a first reinforcement part 20 that fits the outer wall surface of the arc segment 10 and a second reinforcement part 21 that fits the end face of the segmented cage body 1, forming a structure similar to a "匚" shape, and the corners of the segmented cage body 1 are located at the intersection position of the first reinforcement part 20 and the second reinforcement part 21. The first reinforcement part 20 and the second reinforcement part 21 intersect at the corner, forming a solid support structure, significantly enhancing the strength and impact resistance of the corner. The first reinforcement part 20 fits the outer wall surface of the arc segment 10, which not only provides additional support but also effectively prevents the arc segment 10 from deforming or being damaged when subjected to external forces. The second reinforcement part 21 fits the end face of the segmented cage body 1, especially the area in contact with the adjacent segments. This helps to prevent wear caused by friction or collision between segments and enhances the anti-extrusion ability of the end face.

[0035] Furthermore, the segmented cage body 1 is provided with protrusions 202 / grooves 100, and the metal reinforcement frame is provided with grooves 100 / protrusions 202. The grooves 100 and the protrusions 202 are connected in a matching manner to realize the connection between the segmented cage body 1 and the wear-resistant metal reinforcement frame 2.

[0036] The matching connection design of the protrusions 202 and the grooves 100 makes the installation process more intuitive and simple. The operator only needs to align the protrusion 202 part with the groove 100 and gently push it in to achieve the connection, without complex fixing steps or tools.

[0037] When it is necessary to disassemble or replace the wear-resistant metal reinforcement frame 2, simply pull out the protrusion 202 part from the groove 100. This design greatly simplifies the maintenance work, reduces the operation difficulty and time cost.

[0038] As a preferred embodiment of the present application, see Figure 2 , Figure 3 and Figure 4 The groove 100 is located on the outer wall of the arc-shaped segment 10. The groove 100 is located in the inclined surface 102 area of ​​the outer wall of the arc-shaped segment 10. This area has relatively less collision and is relatively long. Therefore, the groove 100 will not significantly affect the overall structure of the arc-shaped segment 10. At the same time, this position also facilitates the connection with the protrusion 202 of the wear-resistant metal reinforcement frame 2. The first reinforcement includes a middle reinforcement that fits against the high surface 101 and a bent reinforcement that can be bent to fit against the inclined surface. The protrusion 202 is located in the middle reinforcement 200 of the first reinforcement 20 and engages with the groove 100 in the vertical direction.

[0039] During installation, first, keep the bent reinforcing part 201 and the middle reinforcing part 200 parallel, so that the protrusion 202 mates with the groove 100 vertically. Then, bend the bent reinforcing part 201 and attach it to the inclined surface 102, so that the protrusion 202 cannot move away from the groove 100 vertically. After bending, the bent reinforcing part 201 fits against the inclined surface 102, forming a stable support structure together with the middle reinforcing part 200. This design effectively prevents the wear-resistant metal reinforcement frame 2 from falling off during long-term use or under external force.

[0040] As a preferred embodiment of this application, the thickness T of the wear-resistant metal reinforcement frame 2 satisfies that 1 / 20 of the thickness of the support beam 11 ≤ T ≤ 1 / 15 of the thickness of the support beam 11.

[0041] The thickness T of the wear-resistant metal reinforcing frame 2 is set between 1 / 20 and 1 / 15 of the thickness of the support beam 11. This range ensures that the reinforcing frame is neither too thick, affecting the number of rolling elements it can accommodate, nor too thin, resulting in insufficient local reinforcement. If the reinforcing frame is too thick, it will occupy more space, potentially causing the arrangement of the rolling elements inside the segmented cage to become too compact, or even preventing it from accommodating the expected number of rolling elements. If the reinforcing frame is too thin, although it saves space, it may not provide sufficient support and wear resistance, reducing the overall reliability and service life of the structure.

[0042] In addition, considering wear resistance and machinability, high-carbon steel or alloy steel can be selected. These materials have high hardness and wear resistance, as well as good machinability and toughness, which can meet the design requirements of the reinforcement frame.

[0043] In addition, a perforated section can be provided in the second reinforcing part of the reinforcement frame to reduce the overall weight of the cage.

[0044] In a preferred embodiment of this application, the second reinforcing part 21 is higher than the end face height of the segmented retainer body 1, and the protruding part can be bent to fit the inner or outer ring surface of the segmented retainer body 1 to reduce contact wear between the segmented retainer body 1 and the inner or outer ring surface.

[0045] During installation, after the groove 100 and protrusion 202 are engaged vertically, the portion of the second reinforcing part 21 that protrudes above the end face of the segmented retainer body 1 is bent and attached to the surface of the segmented retainer body 1 facing the inner or outer ring. This effectively restricts the vertical displacement of the wear-resistant metal reinforcing frame 2, further preventing it from falling off. This not only improves the stability of the connection but also enhances the overall structure's impact and seismic resistance.

[0046] Furthermore, since the bent second reinforcing part 21 is higher than the plane of the segmented cage body 1, in the event of a collision, the main body plane will preferentially contact the collision area, thus reducing the direct contact area between the segmented cage body 1 and the inner or outer ring surface. This helps reduce wear caused by friction and extends the service life of the segmented cage.

[0047] In a preferred embodiment of this application, the support beam 11 is provided with an oil reservoir 110 facing the inner / outer ring surface, which improves the lubrication conditions at the contact position between the rolling element and the support beam 11, reduces friction and wear, and improves operating efficiency.

[0048] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0049] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A locally reinforced segmented retainer characterized by, The segmented retainer body is made of engineering plastic material, and the wear-resistant metal reinforcing frame is detachable and is arranged on both sides of the segmented retainer body to wrap the end faces and four corner regions of the segmented retainer body, thereby improving the strength and wear resistance of the segmented retainer in the high-impact area and prolonging the service life.

2. The locally reinforced segmented retainer of claim 1, wherein, The segmented retainer body includes two arc-shaped segments and a plurality of support beams connecting the two arc-shaped segments, and the wear-resistant metal reinforcing frame includes a first reinforcing portion attached to the outer wall surface of the arc-shaped segment and a second reinforcing portion attached to the end face of the segmented retainer body.

3. The locally reinforced segmented retainer of claim 2, wherein, The segmented retainer body is provided with a protrusion / groove, and the metal reinforcing frame is provided with a groove / protrusion, and the groove and the protrusion are connected to realize the connection of the segmented retainer body and the wear-resistant metal reinforcing frame.

4. The locally reinforced segmented retainer of claim 3, wherein, The groove is arranged on the outer wall surface of the arc-shaped segment, and the protrusion is arranged on the first reinforcing portion.

5. The locally reinforced segmented retainer of claim 4, wherein, The outer wall surface of the arc-shaped segment has a high surface in the middle and inclined surfaces on both sides of the high surface, and the groove is arranged on the inclined surface and extends from one inclined surface to the other inclined surface, and the first reinforcing portion is attached to the outer wall surface of the high surface and the inclined surface to prevent the wear-resistant metal reinforcing frame from being separated from the segmented retainer body.

6. The locally reinforced segmented retainer of claim 5, wherein, The first reinforcing portion includes a middle reinforcing portion attached to the high surface and a bent reinforcing portion capable of being bent to attach to the inclined surface, and the protrusion is arranged on the middle reinforcing portion.

7. The locally reinforced, segmented retainer of claim 2, wherein, The thickness T of the wear-resistant metal reinforcing frame satisfies 1 / 20 of the thickness of the support beam ≤ T ≤ 1 / 15 of the thickness of the support beam.

8. The locally reinforced, segmented retainer of claim 2, wherein, The second reinforcing portion is higher than the height of the end face of the segmented retainer body, and the protruding portion can be bent to attach to the inner ring or outer ring surface of the segmented retainer body to reduce the contact wear between the segmented retainer body and the inner ring or outer ring surface.

9. The locally reinforced, segmented retainer of claim 2, wherein, The support beam is provided with an oil storage groove facing the inner ring / outer ring surface.

10. The locally reinforced, segmented retainer of claim 2, wherein, The second reinforcing portion is provided with a hollow portion to reduce the weight of the retainer.

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