Split type stainless steel bearing

Abstract

The utility model discloses a split type stainless steel bearing, which relates to the technical field of bearings and comprises a cylindrical shell, a bearing top cover is arranged at the top end of the cylindrical shell, a bearing bottom cover is arranged at the bottom end of the cylindrical shell, and the structure of the bearing top cover is the same as that of the bearing bottom cover. The top end and the bottom end of the outer side of the cylindrical shell are each provided with a plurality of clamping grooves arranged circumferentially, a center roller assembly is arranged in the middle of the inner side of the cylindrical shell, a first ball assembly is arranged at the top of the inner side of the cylindrical shell, a second ball assembly is arranged at the bottom of the inner side of the cylindrical shell, and the first ball assembly and the second ball assembly are the same in structure. The split type bearing is scientific and novel in structure, rapid dismounting and convenient maintenance of the bearing can be achieved through split type design, and the combined structure of the cylindrical shell, the bearing top cover and the bearing bottom cover is matched with the design of the rectangular clamping grooves and the rectangular clamping blocks, so that the overall structure of the bearing is stable and reliable.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, and more specifically, to a split-type stainless steel bearing. Background Technology

[0002] Bearings, as key components in mechanical equipment, play an indispensable role in industrial production and daily life. Their main function is to support rotating shafts or other moving parts, reduce friction, improve operating efficiency, and thus extend the service life of equipment. With the continuous advancement of industrial technology and the expansion of application fields, the performance requirements for bearings are also increasing, especially in some special working environments, such as high temperature, high humidity, and corrosive environments. Traditional bearing designs are no longer sufficient to meet the needs of use; therefore, the innovation and improvement of bearing technology has always been an important research direction in the field of engineering technology.

[0003] To meet the needs of different application scenarios, split-type bearings have gradually attracted the attention of the industry. For example, Chinese patent CN222208642U discloses a split-type bearing, including a first bearing split and a second bearing split. It achieves the snap-fit ​​fit between the two bearing splits by forming a groove group on the first joint and setting a corresponding reinforcing block group on the second joint. This design increases the contact area at the connection, improves the bearing's anti-separation ability along the spindle axis and perpendicular to the spindle axis, reduces the number of replacements, and provides a new approach for the development of split-type bearings.

[0004] However, existing split-type bearing designs still have some shortcomings. Taking the aforementioned split-type bearing as an example, firstly, this technology mainly focuses on the connection strength of the bearing, and does not adequately consider the ease of disassembly and assembly and the efficiency of maintenance. In practical applications, especially in situations requiring frequent maintenance or replacement, the complex structure may increase maintenance time and difficulty. In addition, this technology does not fully consider the optimization of the internal structure of the bearing, such as the arrangement and support method of the rolling elements, which may affect the bearing's load-bearing capacity and operational stability, resulting in poor practicality.

[0005] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0006] In view of the problems in the related technologies, this utility model proposes a split stainless steel bearing to overcome the above-mentioned technical problems existing in the existing related technologies.

[0007] Therefore, the specific technical solution adopted by this utility model is as follows:

[0008] A split-type stainless steel bearing includes a cylindrical housing, a bearing top cover at the top of the cylindrical housing, and a bearing bottom cover at the bottom of the cylindrical housing. The bearing top cover and the bearing bottom cover have the same structure. The top and bottom of the outer side of the cylindrical housing are provided with several circumferentially arranged snap-fit ​​grooves. A central roller assembly is provided in the middle of the inner side of the cylindrical housing. A first ball assembly is provided at the top of the inner side of the cylindrical housing. A second ball assembly is provided at the bottom of the inner side of the cylindrical housing. The first ball assembly and the second ball assembly have the same structure.

[0009] Furthermore, in order to achieve a reliable connection between the bearing top cover and the cylindrical housing, and also to facilitate disassembly and maintenance, a circular mounting groove is provided in the middle of the bottom end of the bearing top cover, and several first pin holes arranged in a circle are provided on the inner side of the circular mounting groove. Several snap-fit ​​blocks that cooperate with the snap-fit ​​groove are provided at the top of the bearing top cover.

[0010] Furthermore, in order to realize the rolling support structure in the middle of the bearing, the central roller assembly includes an annular fixing frame symmetrically arranged in the middle of the inner side of the cylindrical housing. One end of the annular fixing frame is provided with a plurality of first connecting blocks arranged in a circle, and a second connecting block is provided between two sets of first connecting blocks. A first arc-shaped limiting groove is provided on both sides of the first connecting block, and a second arc-shaped limiting groove is provided on both sides of the second connecting block. A roller that cooperates with the first arc-shaped limiting groove is provided in the second arc-shaped limiting groove.

[0011] Furthermore, in order to achieve the radial support structure at the bearing end, the first ball assembly includes a first annular retainer fixedly disposed at one end of the central roller assembly. The top end of the first annular retainer is provided with a first annular ball mounting groove. A plurality of circumferentially arranged balls are disposed inside the first annular ball mounting groove. The first ball assembly also includes a second annular retainer disposed at the bottom of the inner side of the cylindrical housing. The bottom end of the second annular retainer is provided with a second annular ball mounting groove that mates with the balls. The top end of the second annular retainer is provided with an annular locking block. A plurality of circumferentially arranged second pin holes are provided inside the annular locking block. The inner diameters of the first annular retainer and the second annular retainer are equal, and the outer diameters of the first annular retainer and the second annular retainer are equal. The difference between the inner diameter and the outer diameter of the first annular retainer is equal to the diameter of the balls.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. This utility model has a scientific and novel structure, which enables quick disassembly and assembly and convenient maintenance of the bearing through a split design. The combined structure of the cylindrical shell, bearing top cover and bearing bottom cover, together with the design of the snap-fit ​​groove and snap-fit ​​block, makes the overall bearing structure stable and reliable. At the same time, the bearing top cover and bottom cover are connected to the ball assembly by the pin shaft, which simplifies the disassembly and assembly process and improves maintenance efficiency. This innovative design not only ensures the stability and reliability of the bearing during use, but also greatly improves the maintainability of the bearing.

[0014] 2. By setting up a central roller assembly, stable support of the bearing for the rotating shaft is achieved. The central roller assembly adopts an alternating arrangement of a ring-shaped fixing frame, a first connecting block, and a second connecting block, which not only enhances structural rigidity but also facilitates the installation and replacement of the rollers. In addition, the line contact design between the rollers and the rotating shaft effectively reduces friction and improves load-bearing capacity. The cooperation of the first arc-shaped limiting groove and the second arc-shaped limiting groove ensures the precise positioning of the rollers during movement, further improving the bearing's operational stability and load-bearing capacity, enabling the bearing to adapt to various complex working environments and load conditions.

[0015] 3. By setting up a first ball bearing assembly and a second ball bearing assembly, balanced support and precise positioning at both ends of the bearing are achieved. These two identical ball bearing assemblies adopt a double-ring cage design to ensure precise positioning and uniform distribution of the balls. At the same time, the point contact design between the balls and the shaft further reduces friction and improves the bearing's operating efficiency. The arc-shaped limiting hole design ensures the free rolling of the balls while preventing them from falling out. This symmetrical double-end ball bearing support structure not only improves the bearing's resistance to eccentric loads but also ensures uniform load distribution, enabling the bearing to maintain stable performance under various operating conditions and improving its reliability. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a structural schematic diagram of a split-type stainless steel bearing according to an embodiment of the present utility model;

[0018] Figure 2 This is a structural schematic diagram of a split-type stainless steel bearing according to an embodiment of the present utility model from another angle;

[0019] Figure 3This is a schematic diagram of the structure of the bearing top cover in a split stainless steel bearing according to an embodiment of the present utility model;

[0020] Figure 4 This is a schematic diagram of the structure of a split-type stainless steel bearing center roller assembly according to an embodiment of the present utility model;

[0021] Figure 5 This is a partial structural schematic diagram of the central roller assembly in a split-type stainless steel bearing according to an embodiment of the present utility model;

[0022] Figure 6 This is a partial structural schematic diagram of the first ball assembly in a split-type stainless steel bearing according to an embodiment of the present utility model.

[0023] In the picture:

[0024] 1. Cylindrical housing; 2. Bearing top cover; 201. Circular mounting groove; 202. First pin hole; 203. Rectangular snap-fit ​​block; 3. Bearing bottom cover; 4. Rectangular snap-fit ​​groove; 5. Center roller assembly; 501. Annular retaining frame; 502. First connecting block; 503. Second connecting block; 504. First arc-shaped limiting groove; 505. Second arc-shaped limiting groove; 506. Roller; 6. First ball assembly; 601. First annular retainer; 602. First annular ball mounting groove; 603. Ball; 604. Second annular retainer; 605. Second annular ball mounting groove; 606. Annular snap-fit ​​block; 607. Second pin hole; 7. Second ball assembly. Detailed Implementation

[0025] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0026] According to an embodiment of the present invention, a split-type stainless steel bearing is provided.

[0027] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figures 1-6As shown, the split stainless steel bearing according to an embodiment of the present invention includes a cylindrical housing 1, a bearing top cover 2 at the top of the cylindrical housing 1, a bearing bottom cover 3 at the bottom of the cylindrical housing 1, and the bearing top cover 2 and the bearing bottom cover 3 have the same structure. The top and bottom of the outer side of the cylindrical housing 1 are provided with a plurality of rectangular snap-fit ​​grooves 4 arranged in a circle. A central roller assembly 5 is provided in the middle of the inner side of the cylindrical housing 1. A first ball assembly 6 is provided in the top of the inner side of the cylindrical housing 1. A second ball assembly 7 is provided in the bottom of the inner side of the cylindrical housing 1. The first ball assembly 6 and the second ball assembly 7 have the same structure.

[0028] With the help of the above-mentioned technical solution of this utility model, the structure of this utility model is scientific and novel. It can realize quick disassembly and assembly and convenient maintenance of bearing through split design. The combined structure of cylindrical shell 1, bearing top cover 2 and bearing bottom cover 3, together with the design of rectangular snap-fit ​​groove 4 and rectangular snap-fit ​​block 203, makes the overall structure of bearing stable and reliable. At the same time, the bearing top cover 2 and bearing bottom cover 3 are connected to the ball assembly by pin, which simplifies the disassembly and assembly process and improves maintenance efficiency. This innovative design not only ensures the stability and reliability of bearing during use, but also greatly improves the maintainability of bearing.

[0029] In one embodiment, for the bearing top cover 2, a circular mounting groove 201 is provided at the center of the bottom end of the bearing top cover 2 (in addition, in specific applications, the diameter of the circular mounting groove 201 is equal to the outer diameter of the annular snap-fit ​​block 606), and a plurality of first pin holes 202 arranged in a circle are provided on the inner side of the circular mounting groove 201 (in addition, in specific applications, the first pin holes 202 and the second pin holes 607 are connected by pins and the number is equal). The top end of the bearing top cover 2 is provided with a plurality of rectangular snap-fit ​​blocks 203 that cooperate with the rectangular snap-fit ​​groove 4, thereby realizing a reliable connection between the bearing top cover 2 and the cylindrical outer shell 1, and also facilitating disassembly and maintenance.

[0030] The bearing top cover 2 works as follows: During assembly, the pin is inserted into the first pin hole 202 and the second pin hole 607 to achieve a reliable connection between the bearing top cover 2 and the first ball assembly 6. When the bearing needs to be disassembled, simply remove the pin to easily separate the bearing top cover 2 and the first ball assembly 6 without disassembling the entire bearing structure. This design greatly simplifies the disassembly and assembly process and improves maintenance efficiency. Simultaneously, the cooperation between the rectangular locking block 203 and the rectangular locking groove 4 further enhances the stability of the overall structure without affecting quick disassembly.

[0031] The bearing bottom cover 3 and the bearing top cover 2 have the same structure and the same working principle.

[0032] In one embodiment, the central roller assembly 5 includes an annular fixing frame 501 symmetrically arranged in the middle of the inner side of the cylindrical housing 1. One end of the annular fixing frame 501 is provided with a plurality of first connecting blocks 502 arranged in a circle, and a second connecting block 503 is provided between two sets of first connecting blocks 502. A first arc-shaped limiting groove 504 is provided on both sides of the first connecting block 502, and a second arc-shaped limiting groove 505 is provided on both sides of the second connecting block 503. A roller 506 that cooperates with the first arc-shaped limiting groove 504 is provided in the second arc-shaped limiting groove 505 (in addition, in specific applications, the roller 506 is tangent to the outer surface of the shaft penetrating the bearing), thereby forming a rolling support structure in the middle of the bearing.

[0033] The working principle of the center roller assembly 5 is as follows: After the shaft is installed inside the bearing, the rollers 506 form line contact with the outer surface of the shaft. When the shaft rotates, the rollers 506 roll between the first arc-shaped limiting groove 504 and the second arc-shaped limiting groove 505, effectively reducing friction and evenly distributing the radial load. The annular fixing frame 501 ensures the precise positioning and uniform distribution of the rollers 506, improving the bearing's support capacity for the shaft and its operational stability. The alternating arrangement of the first connecting block 502 and the second connecting block 503 not only enhances structural rigidity but also facilitates the installation and replacement of the rollers 506; this structure enables the center roller assembly 5 to ensure efficient and stable operation of the shaft while maintaining good maintainability.

[0034] In one embodiment, the first ball assembly 6 includes a first annular retainer 601 fixedly disposed at one end of the central roller assembly 5. The top of the first annular retainer 601 has a first annular ball mounting groove 602 (in addition, in specific applications, both the first annular ball mounting groove 602 and the second annular ball mounting groove 605 have several arc-shaped limiting holes that mate with the balls 603). Several circumferentially arranged balls 603 are disposed inside the first annular ball mounting groove 602 (in addition, in specific applications, the balls 603 are tangent to the outer surface of the shaft penetrating the bearing). The first ball assembly 6 also includes... A second annular retainer 604 is placed at the bottom of the inner side of the cylindrical housing 1. The bottom end of the second annular retainer 604 is provided with a second annular ball mounting groove 605 that mates with the ball 603. The top end of the second annular retainer 604 is provided with an annular snap-fit ​​block 606. The inner side of the annular snap-fit ​​block 606 is provided with a plurality of second pin holes 607 arranged in a circle. The inner diameters of the first annular retainer 601 and the second annular retainer 604 are equal, and the outer diameters of the first annular retainer 601 and the second annular retainer 604 are equal. The difference between the inner diameter and the outer diameter of the first annular retainer 601 is equal to the diameter of the ball 603, thereby forming a radial support structure at the bearing end.

[0035] The working principle of the first ball assembly 6 is as follows: After the shaft is installed at the center of the bearing, the balls 603 form point contact with the outer surface of the shaft. When the shaft rotates, the balls 603 roll within the arc-shaped limiting hole, effectively reducing friction and evenly distributing the radial load. The first annular cage 601 and the second annular cage 604 together ensure the precise positioning and uniform distribution of the balls 603, improving the bearing's support capacity and operational stability for the shaft. The design of the annular snap-fit ​​block 606 and the second pin hole 607 allows the first ball assembly 6 to be reliably connected to the bearing top cover 2 via a pin, while also ensuring the detachability of the split design. This structure enables the first ball assembly 6 to ensure efficient and stable operation of the shaft while also providing good ease of replacement.

[0036] The second ball assembly 7 has the same structure and working principle as the first ball assembly 6. This symmetrical design ensures that both ends of the bearing can provide the same support and load-bearing capacity, further improving the overall performance and stability of the bearing. By using the same ball assembly design at both ends of the bearing, not only is the load evenly distributed, but the bearing's resistance to eccentric loading is also enhanced, enabling the bearing to maintain stable performance under various operating conditions.

[0037] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0038] In practical applications, taking a large industrial centrifugal pump as an example, the main shaft of this centrifugal pump needs to be supported using the split-type stainless steel bearing of this application. First, the bearing bottom cover 3 is installed on the bearing seat of the pump body, and then the cylindrical housing 1 is fitted onto the main shaft. Next, the center roller assembly 5, the second ball assembly 7, and the first ball assembly 6 are sequentially installed inside the cylindrical housing 1. Finally, the bearing top cover 2 is connected to the first ball assembly 6 via a pin, and the rectangular snap-fit ​​block 203 engages with the rectangular snap-fit ​​groove 4 on the cylindrical housing 1 to complete the bearing installation. During use, the rollers 506 and the balls 603 maintain good contact with the main shaft, ensuring the smooth operation of the main shaft. When maintenance is required, the internal structure can be easily accessed simply by removing the pin and the bearing top cover 2, greatly improving maintenance efficiency. This design not only meets the requirements of high-speed operation of the centrifugal pump but also solves the problem of difficult maintenance of traditional bearings.

[0039] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A split type stainless steel bearing comprising a cylindrical outer shell (1), characterized in that, The top end of the cylindrical shell (1) is provided with a bearing top cover (2), the bottom end of the cylindrical shell (1) is provided with a bearing bottom cover (3), the structure of the bearing top cover (2) is same with the bearing bottom cover (3), the top end and the bottom end of the outer side of the cylindrical shell (1) are both provided with a plurality of rectangular clamping grooves (4) arranged in a circle, the inner side of the middle part of the cylindrical shell (1) is provided with a center roller assembly (5), the inner side of the top part of the cylindrical shell (1) is provided with a first ball assembly (6), the inner side of the bottom part of the cylindrical shell (1) is provided with a second ball assembly (7), the structure of the first ball assembly (6) is same with the second ball assembly (7).

2. The split type stainless steel bearing according to claim 1, wherein The bottom end of the bearing top cover (2) is provided with a circular mounting groove (201), the inner side of the circular mounting groove (201) is provided with a plurality of first pin holes (202) arranged in a circle, the top end of the bearing top cover (2) is provided with a plurality of rectangular clamping blocks (203) matched with the rectangular clamping grooves (4).

3. The split type stainless steel bearing according to claim 1, wherein The center roller assembly (5) comprises an annular fixing frame (501) symmetrically arranged in the middle part of the inner side of the cylindrical shell (1), one end of the annular fixing frame (501) is provided with a plurality of first connecting blocks (502) arranged in a circle, and a second connecting block (503) is arranged between the two groups of first connecting blocks (502).

4. The split type stainless steel bearing according to claim 3, wherein The two sides of the first connecting block (502) are both provided with a first arc-shaped limiting groove (504), the two sides of the second connecting block (503) are both provided with a second arc-shaped limiting groove (505), and the second arc-shaped limiting groove (505) is provided with a roller (506) matched with the first arc-shaped limiting groove (504).

5. The split type stainless steel bearing according to claim 3, wherein The first ball assembly (6) comprises a first annular retainer (601) fixedly arranged at one end of the center roller assembly (5), the top end of the first annular retainer (601) is provided with a first annular ball mounting groove (602), and the inner side of the first annular ball mounting groove (602) is provided with a plurality of balls (603) arranged in a circle.

6. A split type stainless steel bearing according to claim 5, wherein The first ball assembly (6) further comprises a second annular retainer (604) arranged at the bottom part of the inner side of the cylindrical shell (1), the bottom end of the second annular retainer (604) is provided with a second annular ball mounting groove (605) matched with the balls (603), and the top end of the second annular retainer (604) is provided with an annular clamping block (606).

7. A split type stainless steel bearing according to claim 6, wherein The inner side of the annular clamping block (606) is provided with a plurality of second pin holes (607) arranged in a circle, the inner diameter of the first annular retainer (601) is equal to the inner diameter of the second annular retainer (604), the outer diameter of the first annular retainer (601) is equal to the outer diameter of the second annular retainer (604), and the difference between the inner diameter and the outer diameter of the first annular retainer (601) is equal to the diameter of the ball (603).

Images