A movable type ball bearing cage

Abstract

This utility model relates to the field of mechanical transmission technology, specifically a movable ball bearing cage, comprising: a ball body; an upper cage mechanism movably connected to the upper outer wall of the ball body; and a lower cage mechanism movably connected to the lower outer wall of the ball body. Both the upper and lower cage mechanisms have multiple first pockets. The upper cage mechanism includes a core load-bearing layer; a transition buffer layer is connected to one side of the core load-bearing layer; and a surface functional layer is connected to the side of the transition buffer layer away from the core load-bearing layer. This utility model solves the problem that existing mechanical transmission cages, made of a single material, cannot simultaneously meet the performance requirements of strength, high-temperature resistance, toughness, and low friction. Under high-temperature and heavy-load environments, they are prone to wear, deformation, or even damage due to insufficient material properties, leading to a decrease in working efficiency.

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission technology, specifically a movable ball bearing cage. Background Technology

[0002] Movable ball bearing cages are components used in mechanical transmission to support and guide the rolling motion of ball bearings. Through a gradient material design, these cages can adapt to complex working environments such as high temperatures and heavy loads. While ensuring their own strength and toughness, they reduce friction, ensuring stable operation of the ball bearings, extending equipment service life, and are suitable for various mechanical devices requiring ball bearing transmission.

[0003] Traditional ball bearing cages have several shortcomings. Most cages are made of a single material, making it difficult to simultaneously meet the requirements for strength, high-temperature resistance, toughness, and low friction. Under high-temperature and heavy-load environments, they are prone to wear, deformation, and even damage due to insufficient material properties, leading to decreased efficiency. Furthermore, the material combinations in existing cages are unreasonable, failing to achieve synergistic performance across different properties. This results in poor durability and reliability over long-term use, severely impacting equipment lifespan and making it difficult to meet the high-performance demands of complex operating conditions. In addition, the mismatch between the structural design and material properties of some cages further exacerbates wear during use, failing to provide sustained and effective support for the stable operation of ball bearings. Therefore, we propose a movable ball bearing cage. Utility Model Content

[0004] One of the technical problems this application aims to solve is that existing mechanical transmission cages are made of a single material, which makes it difficult to simultaneously meet the performance requirements of strength, high temperature resistance, toughness and low friction. Under high temperature and heavy load environments, they are prone to wear, deformation or even damage due to insufficient material performance, resulting in a decrease in work efficiency.

[0005] To address the aforementioned technical problems, this application provides a movable ball bearing cage, comprising a ball body, an upper cage mechanism movably connected to the upper outer wall of the ball body, and a lower cage mechanism movably connected to the lower outer wall of the ball body. Both the upper and lower cage mechanisms are provided with multiple first pockets. The upper cage mechanism includes a core load-bearing layer, a transition buffer layer is connected to one side of the core load-bearing layer, and a surface functional layer is connected to the side of the transition buffer layer away from the core load-bearing layer.

[0006] In some embodiments, an outer shaft is movably connected to one side of the outer wall of the ball body, a first connecting groove is provided on one side of the inner wall of the outer shaft, an inner shaft is movably connected to the side of the ball body away from the outer shaft, and a second connecting groove is provided on one side of the outer wall of the inner shaft.

[0007] In some embodiments, a side plate is movably connected to the outer walls of both the upper and lower ends of the ball body, and a plurality of second pockets are provided on the side plate.

[0008] In some embodiments, the plurality of second pockets on the side plate are connected to the plurality of first pockets on the upper retainer mechanism and the lower retainer mechanism respectively.

[0009] In some embodiments, the upper retainer mechanism and the lower retainer mechanism provided on the outer walls of the upper and lower ends of the ball body are connected accordingly.

[0010] In some embodiments, the ball body is disposed between the outer shaft and the inner shaft.

[0011] In some embodiments, the core load-bearing layer is made of silicon carbide ceramic, the transition buffer layer is made of titanium alloy, and the surface functional layer is made of polytetrafluoroethylene + graphene composite coating.

[0012] In some embodiments, the upper retainer mechanism and the lower retainer mechanism are made of the same material.

[0013] This utility model has at least the following beneficial effects:

[0014] 1. In use, this utility model employs a "strong-strong combination" strategy with gradient materials, enabling the synergistic operation of different performance layers. Particularly evident in the multi-layered structure of the upper cage mechanism, this design showcases the performance gradient of the materials. Each layer performs optimally within its functional range: the core load-bearing layer provides strength and high-temperature resistance, the transition buffer layer ensures overall toughness, and the surface functional layer reduces friction and lubrication requirements. This design not only improves working efficiency under high-temperature, heavy-load environments but also enhances the durability and reliability of bearing components, significantly extending the equipment's service life.

[0015] 2. In use, this design, through multiple first and second pockets on the upper and lower cage mechanisms, allows lubricant to be effectively added to the ball body, thereby reducing friction during rotation. This design effectively avoids excessive wear caused by friction in traditional bearings during operation, and lubrication does not require disassembly of the bearing, greatly improving the convenience and efficiency of maintenance. Furthermore, the addition of lubricant reduces the need for frequent grease replenishment, lowering operating and maintenance costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall disassembly structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the internal disassembly structure of this utility model;

[0019] Figure 4 This is a disassembled structural diagram of the cage connection structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the material structure of the cage of this utility model.

[0021] In the diagram: 1. Outer shaft; 2. First connecting groove; 3. Ball bearing body; 4. Upper cage mechanism; 5. Lower cage mechanism; 6. First pocket; 7. Inner shaft; 8. Second connecting groove; 9. Side plate; 10. Second pocket;

[0022] 41. Core load-bearing layer; 42. Transition buffer layer; 43. Surface functional layer. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1: Please refer to Figure 1-5 This utility model provides a technical solution: a movable ball bearing cage, including a ball body 3, an upper cage mechanism 4 movably connected to the upper outer wall of the ball body 3, and a lower cage mechanism 5 movably connected to the lower outer wall of the ball body 3. The upper cage mechanism 4 and the lower cage mechanism 5 on the upper and lower outer walls of the ball body 3 are correspondingly connected. The upper cage mechanism 4 and the lower cage mechanism 5 are made of the same material. Both the upper cage mechanism 4 and the lower cage mechanism 5 are provided with multiple first pockets 6. The upper cage mechanism 4 includes a core load-bearing layer 41, which is made of silicon carbide ceramic. A transition buffer layer 42 is connected to one side of the core load-bearing layer 41, which is made of titanium alloy. A surface functional layer 43 is connected to the side of the transition buffer layer 42 away from the core load-bearing layer 41, which is made of polytetrafluoroethylene + graphene composite coating material.

[0025] In this embodiment, the design achieves stable rotation of the ball body by using a ball body 3, with an upper cage mechanism 4 and a lower cage mechanism 5 connected to its upper and lower ends respectively. The connection method between the ball body 3, the upper cage mechanism 4, and the lower cage mechanism 5 is a standard existing connection method, and therefore will not be described in detail. It is worth noting that multiple first pockets 6 are provided on both the upper cage mechanism 4 and the lower cage mechanism 5, and these first pockets 6 correspond to the ball body 3. Lubricant can be added to the ball body 3 through the first pockets 6, thereby reducing friction during rotation. In order to cope with complex working environments such as impact, high temperature, and friction, the traditional single material design is insufficient to meet the requirements. Therefore, this design divides the upper cage mechanism 4 into a three-layer structure, specifically: a core load-bearing layer 41, a transition buffer layer 42, and a surface functional layer 43. The core load-bearing layer 41 is made of silicon carbide ceramic with a thickness of 1mm, which can provide high strength (bending strength ≥500MPa) and high temperature resistance (able to work for a long time at 300℃), effectively solving the problem of strength reduction of traditional metal cages at high temperatures. The transition buffer layer 42 uses a 0.5mm thick titanium alloy, which is sintered with the ceramic layer through powder metallurgy. The high toughness of the titanium alloy (10% elongation) effectively offsets the brittleness of the ceramic, preventing impact fracture. The surface functional layer 43 uses a composite coating of polytetrafluoroethylene and graphene, with a thickness of 0.05mm. It has an extremely low coefficient of friction (0.02), which is 60% lower than that of traditional steel cages, and it is self-lubricating, reducing the need for frequent grease replenishment. This design is particularly suitable for high-temperature and heavy-load environments, such as rolling mill bearings in metallurgical equipment. Traditional cages are prone to material softening or lubrication failure above 200℃, while this design can withstand temperatures above 300℃ and reduces friction loss by 50%. By adopting a "strong combination" strategy of graded materials, multiple performance synergies are achieved. This design breaks through the limitations of traditional cage materials that are single or simple composites (such as steel and plastic coatings), and for the first time, a functionally graded structure is formed in cage design.

[0026] Example 2: Please refer to Figure 1-3 An outer shaft 1 is movably connected to one side of the outer wall of the ball body 3. A first connecting groove 2 is provided on one side of the inner wall of the outer shaft 1. An inner shaft 7 is movably connected to the side of the ball body 3 away from the outer shaft 1. The ball body 3 is located between the outer shaft 1 and the inner shaft 7. A second connecting groove 8 is provided on one side of the outer wall of the inner shaft 7. A side plate 9 is movably connected to the outer walls of both the upper and lower ends of the ball body 3. A plurality of second pockets 10 are provided on the side plate 9. The plurality of second pockets 10 provided on the side plate 9 are correspondingly connected to the plurality of first pockets 6 provided on the upper retainer mechanism 4 and the lower retainer mechanism 5.

[0027] In this embodiment, an outer shaft 1 is connected to one side of the outer wall of the ball body 3, and a first connecting groove 2 is provided on one side of the inner wall of the outer shaft 1. The outer shaft 1 is movably connected to the ball body 3 through the first connecting groove 2. An inner shaft 7 is connected to the other side of the ball body 3 through a second connecting groove 8. Therefore, the first connecting groove 2 and the second connecting groove 8 can limit the movement of the ball body 3, the upper cage mechanism 4, and the lower cage mechanism 5, allowing them to rotate on one side of the inner wall of the first connecting groove 2 and the second connecting groove 8. A side plate 9 is connected to the upper and lower ends of the ball body 3, and multiple second pockets 10 are provided on the side plate 9. The second pockets 10 are connected to the first pockets 6, so lubricant can be added through the second pockets 10 to achieve lubrication without having to completely disassemble the bearing for lubrication, which is convenient and efficient.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A movable ball bearing cage, comprising a ball body (3), wherein an upper cage mechanism (4) is movably connected to the upper outer wall of the ball body (3), and a lower cage mechanism (5) is movably connected to the lower outer wall of the ball body (3), wherein both the upper cage mechanism (4) and the lower cage mechanism (5) are provided with a plurality of first pockets (6), characterized in that: The upper retainer mechanism (4) includes a core load-bearing layer (41), a transition buffer layer (42) is connected to one side of the core load-bearing layer (41), and a surface functional layer (43) is connected to the side of the transition buffer layer (42) away from the core load-bearing layer (41).

2. The movable ball bearing cage according to claim 1, characterized in that: The outer shaft (1) is movably connected to one side of the outer wall of the ball body (3), and a first connecting groove (2) is provided on one side of the inner wall of the outer shaft (1). An inner shaft (7) is movably connected to the side of the ball body (3) away from the outer shaft (1), and a second connecting groove (8) is provided on one side of the outer wall of the inner shaft (7).

3. A movable ball bearing cage according to claim 1, characterized in that: The upper and lower outer walls of the ball body (3) are movably connected to a side plate (9), and the side plate (9) is provided with multiple second pockets (10).

4. A movable ball bearing cage according to claim 3, characterized in that: The multiple second pockets (10) on the side plate (9) are connected to the multiple first pockets (6) on the upper retainer mechanism (4) and the lower retainer mechanism (5).

5. A movable ball bearing cage according to claim 1, characterized in that: The upper retainer mechanism (4) and the lower retainer mechanism (5) provided on the outer walls of the upper and lower ends of the ball body (3) are connected accordingly.

6. A movable ball bearing cage according to claim 2, characterized in that: The ball body (3) is located between the outer shaft (1) and the inner shaft (7).

7. A movable ball bearing cage according to claim 1, characterized in that: The core load-bearing layer (41) is made of silicon carbide ceramic, the transition buffer layer (42) is made of titanium alloy, and the surface functional layer (43) is made of polytetrafluoroethylene + graphene composite coating material.

8. A movable ball bearing cage according to claim 1, characterized in that: The upper retainer mechanism (4) and the lower retainer mechanism (5) are made of the same material.

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