An assembly high speed cage

Abstract

The application discloses an assembled high-rotating-speed retainer which is composed of two symmetrical half-retainer units, each of which comprises an annular end wall, a plurality of half-window beam components are uniformly arranged on the annular end wall in the circumferential direction, and a half-hoop structure is enclosed between adjacent half-window beam components; the half-window beam component is provided with a through assembly hole, an elastic locking piece is arranged on one side of the inner wall of the through assembly hole, corresponding elastic locking pieces are matched when the two half-retainer units are assembled, initial contact is realized through a guide inclined surface, and with relative splicing, the two elastic locking pieces can be deformed and skewed in the through assembly hole to a locking position and then reset, and a first limiting step surface of one elastic locking piece and a second limiting step surface of the other elastic locking piece are in abutment to form mechanical interlocking, so that stable connection of the two half-retainer units is realized.

Description

Technical Field

[0001] This application belongs to the field of cages, and particularly relates to an assembly of a high-speed cage. Background Technology

[0002] In bearings, the cage is a crucial component. Its main function is to guide and separate the rolling elements, ensuring their even distribution along the raceway. This guarantees smooth and stable bearing operation, reduces friction and wear, and extends bearing life and performance. Traditional cage structures come in various forms, commonly including integral and modular designs. Modular cages are assembled from multiple parts, with double cages joined together and riveted being a common configuration. This structure overcomes some of the manufacturing challenges of integral cages, allowing large cages to be broken down into smaller components for processing, reducing manufacturing complexity and improving production efficiency.

[0003] Existing double-cage riveting structures present numerous complex assembly challenges. Firstly, precise alignment of the two cages is crucial during assembly to ensure accurate riveting hole positioning. Failure to do so can lead to riveting misalignment and insecure connections, impacting the overall cage performance. Secondly, the riveting process requires specialized equipment, making existing double-cage riveting structures cumbersome and involving multiple steps. Furthermore, the rivets and cages in these structures are often made of different materials. In high-speed machinery, such as high-speed bearings, the cage and rivets generate significant heat due to the bearing's high-speed rotation, causing temperature increases. Because of the different materials, the rivets and cages have varying coefficients of thermal expansion. The different degrees of thermal expansion and contraction during temperature changes create internal stress. This stress can lead to rivet loosening, cage deformation, or even breakage, severely affecting the normal operation of the machinery and reducing its lifespan and reliability. Therefore, developing a novel double cage assembly structure to overcome the shortcomings of existing technologies, improve cage performance and reliability, and reduce production costs is of great practical significance. Utility Model Content

[0004] This invention provides an assembly for a high-speed cage, which at least solves or alleviates one or more technical problems in the prior art, or at least provides a beneficial alternative.

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

[0006] A high-speed cage assembly is composed of two symmetrical half-cage units. Each half-cage unit includes an annular end wall. Several half-window beam members are evenly distributed along the circumference on the annular end wall. Adjacent half-window beam members form a half-pocket structure.

[0007] The half-window beam component has a through assembly channel. An elastic locking element is provided on one side of the inner wall of the through assembly channel. The elastic locking element extends from the inside of the hole to the outside of the hole. The elastic locking element is composed of a wide section on the upper side and a narrow section on the lower side. The wide section has a guide slope. A first-level limiting step surface is formed between the wide section and the narrow section. A second-level limiting step surface is formed between the narrow section and the through assembly channel.

[0008] When the two half cage units are assembled, the corresponding elastic locking components are aligned and initially contacted through the guide ramp. As they are spliced ​​together, the two elastic locking components can deform and tilt to the locking position within the through-hole before resetting. The first-level limiting step surface of one elastic locking component abuts against the second-level limiting step surface of the other elastic locking component to form a mechanical interlock, thereby completing the stable connection of the two half cage units.

[0009] In a preferred implementation, the guide ramps of the elastic locking elements provided on adjacent half-window beam members face opposite directions.

[0010] In a preferred implementation, the guide ramps of the elastic locking elements provided on adjacent half-window beam members have the same orientation.

[0011] In a preferred embodiment, the end face of the half-window beam member includes a horizontal part in the middle, a protrusion on one side of the horizontal part, and a recess on the other side. A through assembly hole is opened in the horizontal part. The protrusion and the recess are adapted in shape. After the two half-cage units are assembled, the protrusion of one elastic locking member is engaged with the recess of the other elastic locking member.

[0012] In a preferred implementation, the depth of the recess is greater than the height of the protrusion, and a gap is formed between the two after they are fitted together.

[0013] In a preferred implementation, the protrusion has a contact surface on the side facing the semi-pocket structure that matches the curvature of the pocket.

[0014] In the preferred implementation, after the first-level limiting step surface and the second-level limiting step surface come into contact and abut, there is an oil storage gap between the elastic locking member and the circumferential inner wall of the through assembly channel.

[0015] In the preferred implementation, a notch is provided on the side of the annular end wall facing away from the half-hole, and the notch is provided corresponding to the half-window beam component.

[0016] In a preferred implementation, the notch is trapezoidal or arched.

[0017] In the preferred implementation, the elastic locking element and the half-window beam component are integrally formed.

[0018] The above structure has the following beneficial effects:

[0019] 1. The high-speed cage assembly of this application does not require rivets and consists only of two symmetrical half-cage units. This reduces the types of materials, lowers material procurement costs and inventory management difficulties, eliminates the rivet processing process, reduces processing steps and required equipment, thereby reducing processing costs.

[0020] 2. The high-speed cage assembly method of this application simplifies the assembly process. It only requires docking two half-cage units, achieving initial contact through the guide ramp of the elastic locking element. As they are assembled, the elastic locking element deforms and tilts within the through-hole to the locking position before resetting, completing the mechanical interlock connection. The entire assembly process is simple and quick, requiring no specialized equipment or complex operations, greatly improving assembly efficiency and reducing assembly difficulty and labor costs.

[0021] 3. The high-speed cage assembly of this application uses the same material for both half-cage units, which avoids the problem of thermal expansion difference caused by different materials, thereby improving the stability and reliability of the cage in high-speed operating environment. Attached Figure Description

[0022] 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:

[0023] Figure 1 A three-dimensional structural schematic diagram of one embodiment of the high-speed cage assembly of this application is shown;

[0024] Figure 2 A three-dimensional structural schematic diagram of one embodiment of the two-and-a-half cage units of this application is shown;

[0025] Figure 3 The diagram illustrates a schematic embodiment of the internal structure of the two semi-cage units of this application after assembly.

[0026] Figure 4 This diagram illustrates a partially enlarged structural schematic of one embodiment of the gap between the protrusion and the recess in this application.

[0027] Figure 5 A schematic diagram illustrating one embodiment of the elastic locking element of this application is shown.

[0028] Label Explanation:

[0029] 1. Semi-cage unit; 10. Annular end wall; 100. Notch; 11. Semi-window beam member; 110. Through assembly channel; 1100. Oil reservoir gap; 111. Elastic locking element; 1110. Wide section; 11100. Guide slope; 1111. Narrow section; 112. Horizontal part; 113. Protrusion; 1130. Contact surface; 114. Recess; 115. Gap; 11101. First-level limiting step surface; 11102. Second-level limiting step surface; 12. Semi-pocket structure. Detailed Implementation

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] The present invention will now be described with reference to the accompanying drawings.

[0035] The specific solution adopted is as follows:

[0036] like Figure 1-5 As shown, this utility model provides an assembly of a high-speed cage, which is composed of two symmetrical half-cage units 1. Each half-cage unit 1 includes an annular end wall 10. Several half-window beam members 11 are evenly arranged on the annular end wall 10 along the circumferential direction. Adjacent half-window beam members 11 form a half-pocket structure 12.

[0037] The half-window beam component 11 has a through assembly channel 110. An elastic locking member 111 is provided on one side of the inner wall of the through assembly channel 110. The elastic locking member 111 extends from the inside of the hole to the outside of the hole. The elastic locking member 111 is composed of an upper wide section 1110 and a lower narrow section 1111. The wide section 1110 has a guide slope 11100. A first-level limiting step surface 11101 is formed between the wide section 1110 and the narrow section 1111. A second-level limiting step surface 11102 is formed between the narrow section 1111 and the through assembly channel 110.

[0038] When the two half-cage units 1 are assembled, the corresponding elastic locking elements 111 correspond and make initial contact through the guide ramp 11100. As they are spliced ​​together, the two elastic locking elements 111 can deform and tilt to the locking position in the through-hole and then reset. The first-level limiting step surface of one elastic locking element 111 abuts against the second-level limiting step surface of the other elastic locking element 111 to form a mechanical interlock, thereby completing the stable connection of the two half-cage units 1.

[0039] Traditional cages using rivets require separate procurement and storage of rivets as additional connecting components, increasing material types and inventory management costs. The high-speed cage of this application eliminates rivets, consisting only of two symmetrical half-cage units 1. This reduces material types, lowers procurement costs and inventory management complexity, and eliminates the rivet processing step, reducing processing steps and required equipment, thus lowering processing costs. Furthermore, the absence of rivets simplifies the assembly process. The two half-cage units 1 are simply joined together, with initial contact achieved through the guide slope 11100 of the elastic locking element 111. As they are joined, the elastic locking element 111 deforms and tilts within the through-hole 110 to the locking position before resetting, completing the mechanical interlock connection. The entire assembly process is simple and quick, requiring no specialized equipment or complex operations, significantly improving assembly efficiency and reducing assembly difficulty and labor costs. The new cage, without rivets, uses the same material for both half-cage units 1, avoiding thermal expansion differences caused by material variations, thereby improving the stability and reliability of the cage under high-speed operating conditions.

[0040] The layout of the elastic locking member 111 can adopt one of the following embodiments:

[0041] In Example 1, the guide ramps 11100 of the elastic locking members 111 on adjacent half-window beam members 11 face opposite directions. Starting from any elastic locking member 111, the ramps of adjacent locking members face opposite directions in a clockwise / counterclockwise direction, alternating between the two. When assembling the two half-cage units 1, the deformation directions of adjacent elastic locking members 111 are opposite, thus the forces exerted on the half-window beam members 11 are opposite. Ultimately, the opposite forces will cancel each other out to a certain extent, resulting in a more uniform overall force distribution. However, it is necessary to accurately locate the docking position of the two half-cage units 1.

[0042] In Example 2, the guide slopes 11100 of the elastic locking members 111 on adjacent half-window beam components 11 have the same orientation. Starting from any elastic locking member 111, the slopes of adjacent locking members have the same orientation in the clockwise / counterclockwise direction. The advantage of this is that the two half-cage units 1 can quickly find the docking position and the assembly efficiency is high. However, during installation, the force direction of all elastic locking members 111 is the same, which may lead to unilateral overload. However, since there are multiple elastic locking members 111 on the cage to share the load, this solution is also feasible.

[0043] The layout of the elastic locking element 111 in the above embodiments can be reasonably selected according to different application scenarios.

[0044] As a preferred embodiment of this application, see [link to application]. Figure 2The end face of the half-window beam component 11 includes a horizontal portion 112 in the middle, a protrusion 113 on one side of the horizontal portion 112, and a recess 114 on the other side. A through-hole assembly channel 110 is opened in the horizontal portion 112. The protrusion 113 and the recess 114 are shaped to fit together. After the two half-cage units 1 are assembled, the protrusion 113 of one elastic locking member 111 is engaged with the recess 114 of the other elastic locking member 111. When the two half-cage units 1 are assembled, a double circumferential limit is constructed by the elastic locking member 111 and the convex-concave engagement structure. Specifically, the anti-rotation between the two half-cage units 1 is limited by the elastic locking member 111, the protrusion 113, and the recess 114. This is suitable for high-speed rotation conditions. The two half-cage units 1 are stably connected together, ensuring the stable operation of the bearing.

[0045] Further, see Figure 4 The depth of the recess 114 is greater than the height of the protrusion 113. After the two are fitted together, a gap 115 is formed between them. The presence of the gap 115 can reduce the contact between the rolling element and the pocket, and the cage can be cooled by lubricating oil.

[0046] Furthermore, the protrusion 113 has a contact surface 1130 on the side facing the semi-pocket structure that matches the curvature of the pocket, thereby enclosing a pocket structure that matches the size and shape of the rolling element.

[0047] In a preferred embodiment of this application, after the first-level limiting step surface and the second-level limiting step surface come into contact, an oil storage gap 1100 is formed between the elastic locking member 111 and the circumferential inner wall of the through assembly channel 110. After assembly, the elastic locking member 111 does not exceed the axial boundary of the channel, and at the same time, the oil storage volume is increased through the circumferential continuous oil cavity structure, which significantly enhances the continuity of lubricating oil supply.

[0048] As a preferred embodiment of this application, the annular end wall 10 is provided with a notch 100 on the side opposite to the half pocket. The notch 100 is provided corresponding to the half window beam member 11. The notch 100 can reduce the weight of the cage and increase the oil storage volume in the bearing. This arrangement makes it more suitable for operation under high speed conditions.

[0049] Furthermore, the notch 100 is trapezoidal or arched, which reduces the weight of the cage and can also improve the cage's compressive strength to some extent.

[0050] As a preferred embodiment of this application, the elastic locking member 111 is integrally formed with the half-window beam member 11 to ensure the structural strength of the half-cage unit 1.

[0051] For any parts not mentioned in the utility model, existing technologies can be adopted or referenced.

[0052] 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 high-speed cage assembly, characterized in that, It consists of two symmetrical half-cage units, each half-cage unit includes an annular end wall, and several half-window beam members are evenly distributed along the circumference on the annular end wall. The adjacent half-window beam members form a half-pocket structure. The half-window beam component has a through assembly channel. An elastic locking element is provided on one side of the inner wall of the through assembly channel. The elastic locking element extends from the inside of the hole to the outside of the hole. The elastic locking element is composed of a wide section on the upper side and a narrow section on the lower side. The wide section has a guide slope. A first-level limiting step surface is formed between the wide section and the narrow section. A second-level limiting step surface is formed between the narrow section and the through assembly channel. When the two half cage units are assembled, the corresponding elastic locking components are aligned and initially contacted through the guide ramp. As they are spliced ​​together, the two elastic locking components can deform and tilt to the locking position within the through-hole before resetting. The first-level limiting step surface of one elastic locking component abuts against the second-level limiting step surface of the other elastic locking component to form a mechanical interlock, thereby completing the stable connection of the two half cage units.

2. The assembled high-speed cage according to claim 1, characterized in that, The guide ramps of the elastic locking components installed on adjacent half-window beam members face opposite directions.

3. The assembled high-speed cage according to claim 1, characterized in that, The guide ramps of the elastic locking components installed on adjacent half-window beam members face the same direction.

4. The assembled high-speed cage according to claim 1, characterized in that, The end face of the half-window beam component includes a horizontal part in the middle, a protrusion on one side of the horizontal part and a recess on the other side. The through assembly channel is opened in the horizontal part. The protrusion and the recess are adapted in shape. After the two half retainer units are assembled, the protrusion of one elastic locking member is connected to the recess of the other elastic locking member.

5. The assembled high-speed cage according to claim 4, characterized in that, The depth of the recess is greater than the height of the protrusion, and a gap is formed between the two after they are fitted together.

6. The assembled high-speed cage according to claim 4, characterized in that, The protrusion has a contact surface on the side facing the semi-pocket structure that matches the curvature of the pocket.

7. The assembled high-speed cage according to claim 1, characterized in that, After the first-level limiting step surface comes into contact with the second-level limiting step surface, there is an oil storage gap between the elastic locking component and the circumferential inner wall of the through assembly channel.

8. The assembled high-speed cage according to claim 1, characterized in that, A notch is provided on the side of the annular end wall facing away from the half-hole, and the notch is provided corresponding to the half-window beam component.

9. The assembled high-speed cage according to claim 8, characterized in that, The gap is trapezoidal or arched.

10. The assembled high-speed cage according to claim 1, characterized in that, The elastic locking element and the half-window beam component are integrally formed.

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