Riveting retainer capable of preventing sleeve from being loosened

Abstract

The utility model discloses an anti-loose riveting retainer which comprises a first retainer body and a second retainer body, a window beam of the second retainer body is provided with an extending connecting arm, and the connecting arm comprises a first bent section bent away from the circle center direction, an attaching section matched with the window beam of the first retainer body in length and a second bent section bent towards the circle center direction. The window beam of the first retainer is arranged between the first bent section and the second bent section, the outer wall of the window beam of the first retainer is attached to the attaching section to form an encircling type clamping structure, and the window beam of the first retainer can be tightly wrapped by the connecting arm through the design of the connecting arm extending on the window beam of the second retainer, the first bent section and the second bent section. According to the retaining frame, a stable mechanical structure is formed, the centrifugal force resistance and heavy load resistance of the retaining frame are improved, the overall rigidity of the retaining frame is improved through the surrounding type clamping structure, the overall strength of the retaining frame is remarkably improved through mutual supporting and limiting, and the retaining frame can better resist deformation under high loads and high-speed operation.

Description

Technical Field

[0001] This application belongs to the technical field of bearings, and particularly relates to an anti-scattering sleeve riveted cage. Background Art

[0002] Bearings, as an indispensable core component of mechanical equipment, its structure includes inner and outer rings, rollers and a cage. Specifically, the rollers are circumferentially evenly arranged in the raceways between the inner and outer rings, and through their smooth rolling, the flexible relative rotation between the inner and outer rings is realized. The cage, with its delicate design of an annular structure, has pocket holes distributed on its surface that precisely accommodate each roller, not only maintaining a reasonable spacing between the rollers but also ensuring the stability of the overall operation.

[0003] However, in high-performance application scenarios, we have to face the application challenges of traditional bearings under high loads and harsh working conditions. In key equipment such as machine tool spindles and wind turbine spindles, it is required that the bearings can not only operate stably at extremely high speeds but also withstand huge radial loads, while facing complex and variable operating environments such as vibration and impact. Under the dual pressures of high loads and high-speed operation, the performance boundaries of traditional bearings are continuously pushed to the limit. With the continuous increase in the rotational speed and load of the bearings, its internal components, especially the cage, face unprecedented challenges. The cage, as a key component that supports and separates the rollers, is extremely prone to deformation problems under long-term high-speed rotation and heavy loads, especially the deformation of the window beam caused by centrifugal force. This deformation not only destroys the ideal contact state between the rollers and the raceways but also causes the rollers to deviate from their predetermined movement trajectories, thereby triggering abnormal contact and wear with the inner and outer rings. Therefore, for the harsh application scenarios of bearings, the performance of traditional bearings has gradually become difficult to meet the requirements, and the innovative design and application of bearing cages have become the key to solving this problem. Thus, the existing technology needs to be further improved and enhanced. Summary of the Utility Model

[0004] The utility model provides an anti-scattering sleeve riveted cage with strong anti-deformation ability and high load-bearing capacity, which can be used in harsh application scenarios.

[0005] To achieve the above object, the utility model provides the following technical solutions:

[0006] A riveted retainer for preventing loose sleeves comprises a first retainer and a second retainer, the window beam of the second retainer is provided with an extended connecting arm, the connecting arm comprises a first bent section bent away from the center direction, a fitting section adapted to the length of the window beam of the first retainer, and a second bent section bent toward the center direction, the window beam of the first retainer is arranged between the first bent section and the second bent section and fits with its outer wall and the fitting section to form an embracing clamping structure, the first retainer and the second retainer support and restrict each other to prevent radial deformation of the two, so as to enhance the deformation resistance of the entire retainer.

[0007] The anti-loosening sleeve riveted retainer of the present application has a connecting arm extending from the window beam of the second retainer. The design of the first bent section and the second bent section enables the connecting arm to tightly wrap the window beam of the first retainer to form a stable mechanical structure, thereby improving the retainer's resistance to centrifugal force and heavy loads. The fitting section is adapted to the length of the first retainer window beam, and the outer wall is tightly fitted to the first retainer window beam. This design reduces additional stress caused by gaps or looseness, further enhances the stability of the structure, and forms an embracing clamping structure, which not only increases the overall stiffness of the retainer, but also significantly improves the overall strength of the retainer through mutual support and restriction, making it more resistant to deformation under high loads and high-speed operation.

[0008] In a preferred implementation, the first bending section is provided at the intersection of the window beam of the second retaining frame and the connecting arm, and the second bending section contacts the end ring of the first retaining frame.

[0009] In a preferred implementation, after the outer wall of the window beam of the first retaining frame contacts the fitting section, the window beam of the first retaining frame corresponds vertically to the window beam of the second retaining frame.

[0010] In a preferred implementation, the second bending section is provided with a first connecting hole, the end ring of the first retaining frame and the end ring of the second retaining frame are provided with a second connecting hole, and the rivet column passes through the first connecting hole and the second connecting hole to achieve firm riveting.

[0011] By setting a first connecting hole on the connecting arm of the second retainer, and setting a second connecting hole on the end rings of the first retainer and the second retainer, and then using rivet columns for riveting, the two retainers can be further firmly connected together to prevent the occurrence of loose sleeves and improve the overall performance and reliability of the bearing.

[0012] In a preferred implementation, the rivet column is sleeved with a cylindrical rolling body, the first retaining frame and the second retaining frame are respectively provided with a first pocket and a second pocket for accommodating balls, and the balls and the cylindrical rolling body are both in contact with the inner ring.

[0013] In a preferred implementation, the outer wall surface of the inner ring is provided with two ball rolling tracks to guide the ball rolling tracks, and the cylindrical rolling body contacts the outer wall surface of the inner ring where no ball rolling tracks are provided.

[0014] The riveting posts are not only used to firmly rivet the first cage and the second cage together, but also sleeved with cylindrical rolling elements. The introduction of the cylindrical rolling elements increases the contact points with the inner ring, thereby dispersing the load and improving the bearing capacity of the bearing.

[0015] In a preferred implementation, both the first pocket and the second pocket have openings, and the openings of the first pocket and the second pocket are arranged oppositely, and an oil passage gap is formed between the opposite openings.

[0016] The oil passage gap formed between the opposite openings provides an additional storage space for the lubricating oil. During the operation of the bearing, the lubricating oil can be effectively retained inside the bearing through this gap, reducing the risk of lubrication failure caused by the rupture of the oil film; the existence of the oil passage gap promotes the flow of the lubricating oil, enabling heat to be transferred and dissipated more quickly, which helps to reduce the operating temperature of the bearing, and also reduces the weight of the bearing, improving the service life and stability of the bearing.

[0017] In a preferred implementation, the first pocket and the second pocket are provided with oil passage grooves facing the ball surface.

[0018] In a preferred implementation, the cross-sectional diameters of the first pocket and the second pocket gradually increase in the direction towards the center of the circle.

[0019] In a preferred implementation, the width of the connecting arm is smaller than the widths of the window beams of the first cage and the second cage. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention, and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present application and do not constitute an improper limitation to the present invention. In the drawings:

[0021] Figure 1 A schematic three-dimensional structure diagram of a schematic embodiment of the anti-scattering sleeve riveting cage of the present application is shown;

[0022] Figure 2 A schematic three-dimensional structure diagram of a schematic embodiment of the second cage of the present application is shown;

[0023] Figure 3 A schematic three-dimensional structure diagram of a schematic embodiment of the first cage of the present application is shown;

[0024] Figure 4 A schematic three-dimensional structure diagram of a schematic embodiment of the assembly of the anti-scattering sleeve riveting cage and the inner ring of the present application is shown;

[0025] Figure 5Illustrates a schematic cross-sectional structure diagram of the anti-scattering sleeve riveted cage of the present application assembled with the inner ring;

[0026] Label description:

[0027] 1 - First cage; 10 - End ring; 11 - First pocket; 2 - Second cage; 20 - Connecting arm; 200 - First bending section; 201 - Fitting section; 202 - Second bending section; 21 - Second pocket; 210 - Opening; 211 - Oil passage groove; 212 - Oil passage clearance; 3 - Ball; 4 - Riveting post; 5 - Cylindrical rolling element; 6 - Inner ring; 60 - Ball raceway. Specific embodiments

[0028] In the following text, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0029] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the 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. Therefore, it cannot be understood as a limitation to the present invention. In the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements. However, indicating a direct connection means that there is no connection relationship constructed through an excessive structure between the two connected main bodies, and only a connection structure is used to connect them to form a whole. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0032] The utility model is described below in conjunction with the accompanying drawings.

[0033] The specific plans adopted are:

[0034] like Figures 1-5 As shown, the utility model provides an anti-loosening sleeve riveted retainer, comprising a first retainer 1 and a second retainer 2, the window beam of the second retainer is provided with an extended connecting arm 20, the connecting arm comprises a first bent section 200 bent away from the center direction, a fitting section 201 adapted to the length of the window beam of the first retainer, and a second bent section 202 bent toward the center direction, the window beam of the first retainer is arranged between the first bent section and the second bent section and fits with its outer wall and the fitting section to form an embracing clamping structure, the first retainer and the second retainer support and restrict each other to prevent the two from deforming in the radial direction, so as to enhance the deformation resistance of the entire retainer.

[0035] The above structure, through the connecting arm extending from the window beam of the second retaining frame 2, the design of the first bending section and the second bending section enables the connecting arm to tightly wrap the window beam of the first retaining frame, forming a stable mechanical structure, improving the retaining frame's resistance to centrifugal force and heavy load, the fitting section is adapted to the length of the first retaining frame window beam, and the outer wall is tightly fitted to the first retaining frame window beam. This design reduces the additional stress caused by gaps or looseness, further enhances the stability of the structure, and the formed embracing clamping structure not only increases the overall stiffness of the retaining frame, but also significantly improves the overall strength of the retaining frame through mutual support and restriction, making it more resistant to deformation under high loads and high-speed operation.

[0036] For details, see Figure 1 and Figure 2 The first bending section is arranged at the intersection of the second retaining frame window beam and the connecting arm, and the second bending section contacts the end ring 10 of the first retaining frame 1.

[0037] As a preferred embodiment of the present application, after the outer wall of the window beam of the first cage 1 contacts the fitting section, the window beam of the first cage is vertically corresponding to the window beam of the second cage. The window beams of the two cages are vertically corresponding to form a symmetric structure. The sizes of the balls in the pocket holes of the two cages can be set to be the same. This not only simplifies the procurement and inventory management of the balls, but also ensures the uniformity of the forces on the balls during the operation of the bearing, improving the overall performance of the bearing. Corresponding to the same ball size, the raceways of the inner ring can also be designed to be the same, which greatly facilitates the processing process, reduces the processing difficulty and cost. At the same time, the consistency of the raceways also helps to maintain the stable movement of the balls in the raceways, reducing wear and vibration. The symmetric design helps to optimize the dynamic balance of the bearing. During high-speed rotation, the symmetric structure can reduce the vibration and noise generated due to uneven mass distribution, improving the rotation accuracy and stability of the bearing. Since the two cages support and restrict each other, a more stable structure is formed. This structure can better disperse the stress when bearing heavy loads, improving the load-bearing capacity and service life of the bearing.

[0038] As a preferred embodiment of the present application, the second bending section 202 is provided with a first connection hole, and the end rings of the first cage and the second cage are provided with second connection holes. The riveting post passes through the first connection hole and the second connection hole to achieve firm riveting. By providing a first connection hole on the connecting arm of the second cage, and providing second connection holes on the end rings of the first cage and the second cage, and then using the riveting post 4 for riveting, the two cages can be further firmly connected together, preventing the occurrence of the phenomenon of the cage coming loose, and improving the overall performance and reliability of the bearing.

[0039] Further, the riveting post is sleeved with a cylindrical rolling element. The first cage and the second cage are respectively provided with a first pocket hole 11 and a second pocket hole 21 for accommodating the ball 3. Both the ball and the cylindrical rolling element 5 are in contact with the inner ring 6. Specifically, referring to Figure 5 , two ball raceways are provided on the outer wall surface of the inner ring to guide the ball raceways. The cylindrical rolling element is in contact with the outer wall surface of the inner ring where no ball raceway is provided. The riveting post is not only used to firmly rivet the first cage and the second cage together, but also sleeved with a cylindrical rolling element. The introduction of the cylindrical rolling element increases the contact points with the inner ring, thereby dispersing the load and improving the load-bearing capacity of the bearing.

[0040] The outer wall surface of the inner ring 6 is provided with two ball raceways 60. These raceways precisely guide the movement trajectory of the balls, ensuring the smooth operation of the bearing. The cylindrical rolling elements are in contact with the outer wall surface of the inner ring where no ball raceway is provided. This design enables the bearing, when bearing a load, not only to have the balls rolling on the ball raceways to share the load, but also to have the cylindrical rolling elements provide additional support and load-bearing capacity in other areas of the inner ring. The contact area of the cylindrical rolling elements is relatively large, which can better disperse the load and reduce local stress concentration, thereby improving the load-bearing capacity and service life of the bearing. The introduction of the cylindrical rolling elements significantly increases the load-bearing capacity of the bearing. Under high-speed operation and high-load conditions, the cylindrical rolling elements and the balls are in contact in different areas of the inner ring, effectively dispersing the load and making the bearing more stable and reliable.

[0041] As a preferred embodiment of the present application, both the first pocket 11 and the second pocket 21 have openings 210, and the openings of the first pocket and the second pocket are arranged oppositely. An oil passage gap is formed between the opposite openings. The oil passage gap formed between the opposite openings provides an additional storage space for the lubricating oil. During the operation of the bearing, the lubricating oil can be effectively retained inside the bearing through this gap, reducing the risk of lubrication failure caused by the rupture of the oil film; the existence of the oil passage gap promotes the flow of the lubricating oil, enabling heat to be transferred and dissipated more quickly, which helps to reduce the working temperature of the bearing, improve the service life and stability of the bearing; the oil passage gap enables the lubricating oil to more easily enter the contact area between the ball and the pocket wall, providing continuous and uniform lubrication for the ball. This helps to reduce the wear rate of the ball and improve the running accuracy and reliability of the bearing.

[0042] Furthermore, the first pocket and the second pocket are provided with oil grooves 211 facing the ball surface. The design of the oil grooves reduces the contact area between the ball and the pocket wall. During the operation of the bearing, when the ball rolls in the pocket, the oil grooves can guide the lubricating oil to more smoothly enter the contact area between the ball and the pocket wall, thereby reducing the directly contacting area. This helps to reduce friction and wear and improve the running efficiency of the bearing.

[0043] As a preferred embodiment of the present application, the cross-sectional diameters of the first pocket 11 and the second pocket 21 gradually increase in the direction towards the center of the circle. When the bearing is running at high speed, the balls will be affected by centrifugal force and tend to move outward from the center of the circle. However, due to the fact that the cross-sectional diameters of the pockets gradually increase in the direction towards the center of the circle, the balls will encounter increasing resistance when attempting to move outward. This design effectively restricts the outward movement of the balls under the action of centrifugal force and maintains the stable position of the balls in the pockets.

[0044] As a preferred embodiment of the present application, the width of the connecting arm 20 is smaller than the widths of the window beams of the first cage and the second cage.

[0045] As a key component connecting the first cage and the second cage, the width of the connecting arm is smaller than that of the window beam, which means that less material can be used in the manufacturing process. This helps to reduce the production cost. At the relative positions of the two cages, due to the width of the connecting arm being smaller than that of the window beam, certain gaps are naturally formed. These gaps increase the size of the oil passage clearance, which is beneficial to lubrication, oil storage and heat dissipation.

[0046] What is not described in this utility model can be realized by adopting or referring to the existing technologies.

[0047] The above is only the specific implementation manner of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by this utility model can easily think of various changes or substitutions thereof, and these should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model shall be subject to the protection scope of the claims.

Claims

1. An anti-falling sleeve riveting cage, characterized in that: It includes a first retaining frame and a second retaining frame, the window beam of the second retaining frame is provided with an extended connecting arm, the connecting arm includes a first bending section bent away from the center direction, a fitting section adapted to the length of the window beam of the first retaining frame, and a second bending section bent toward the center direction, the window beam of the first retaining frame is arranged between the first bending section and the second bending section and fits with its outer wall and the fitting section to form an embracing clamping structure, the first retaining frame and the second retaining frame support and restrict each other to prevent the two from deforming in the radial direction, so as to improve the deformation resistance of the entire retaining frame.

2. The anti-fall-out sleeve riveting retainer according to claim 1, characterized in that: The first bending section is arranged at the intersection of the window beam of the second retaining frame and the connecting arm, and the second bending section contacts the end ring of the first retaining frame.

3. The anti-fall-out sleeve riveting retainer according to claim 2, characterized in that: After the outer wall of the window beam of the first retaining frame contacts the fitting section, the window beam of the first retaining frame corresponds vertically to the window beam of the second retaining frame.

4. The anti-fall-out sleeve riveting retainer according to claim 2, characterized in that: The second bending section is provided with a first connecting hole, the end ring of the first retaining frame and the end ring of the second retaining frame are provided with a second connecting hole, and the rivet column passes through the first connecting hole and the second connecting hole to achieve firm riveting.

5. The anti-fall-out sleeve riveting retainer according to claim 4, characterized in that: The rivet column is sleeved with a cylindrical rolling body, and the first retaining frame and the second retaining frame are respectively provided with a first pocket and a second pocket for accommodating balls, and the balls and the cylindrical rolling body are both in contact with the inner ring.

6. The anti-fall-out sleeve riveting retainer according to claim 5, characterized in that: The outer wall surface of the inner ring is provided with two ball rolling tracks to guide the ball rolling tracks, and the cylindrical rolling body contacts the outer wall surface of the inner ring where no ball rolling tracks are provided.

7. The anti-fall-out sleeve riveting retainer according to claim 5, characterized in that: Both the first pocket hole and the second pocket hole have openings, and the openings of the first pocket hole and the second pocket hole are arranged opposite to each other, and an oil gap is formed between the opposite openings.

8. The anti-fall-out sleeve riveting retainer according to claim 5, characterized in that: The first pocket and the second pocket are provided with oil grooves facing the ball surface.

9. The anti-fall-out sleeve riveting retainer according to claim 5, characterized in that: The cross-sectional diameters of the first pocket hole and the second pocket hole gradually increase toward the center of the circle.

10. The anti-fall-out sleeve riveting retainer according to claim 1, characterized in that: The width of the connecting arm is smaller than the width of the first retainer and the second retainer window beam.

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