Integrated sealed bearing

Abstract

The invention relates to the technical field of aviation sealing structures, in particular to an integrated sealing bearing which comprises a bearing part, a sealing part and a driving part. The bearing part is rotatably arranged; the bearing part is rotationally connected with the sealing part through a rolling body, and one end of the bearing part and the sealing part are arranged at intervals; a sealing ring is arranged around a gap between the bearing part and the sealing part; the driving part is arranged in the sealing part in the circumferential direction of the sealing part; one end of the driving part is connected with the sealing ring, and the driving part can drive the sealing ring to be tightly pressed in the gap between the bearing part and the sealing part. According to the aero-engine bearing cavity sealing device, the mode that an existing aero-engine bearing cavity needs to be provided with a sealing device independently is replaced, the installation space needed to be reserved during installation is saved, the number of needed parts is reduced, and therefore the structural compactness and the operation reliability of an aero-engine are effectively improved.

Description

Technical Field

[0001] The invention belongs to the technical field of aviation sealing structures, and in particular relates to an integrated sealed bearing. Background Art

[0002] The bearing cavity of an aircraft engine can not only prevent the high-temperature air outside the bearing cavity from damaging the bearing and lubricating oil, but also prevent the lubricating oil in the bearing cavity from flowing out, allowing the lubricating oil to flow along a specific oil path.

[0003] The existing bearing cavity is generally composed of a variety of parts such as bearings, lubrication devices, and sealing devices. The sealing device forms the boundary of the bearing cavity, relatively isolates the inside and outside of the bearing cavity, and allows the bearing to be located in the bearing cavity, thereby preventing the lubricating oil in the bearing cavity from flowing out, and preventing the lubricating oil and bearing in the bearing cavity from being exposed to high-temperature air. However, the sealing device usually needs to be independently designed, processed, and installed, which not only requires a large installation space to be reserved, resulting in space waste in the aircraft engine, but also requires strict processing and assembly accuracy of the sealing device, thereby increasing the probability of problems during the design, processing, and installation process.

[0004] Therefore, the effect of the existing bearing chamber of the aircraft engine by setting a sealing device alone is poor. Summary of the invention

[0005] In view of the above problems, the present invention provides an integrated sealed bearing, comprising:

[0006] A bearing portion, wherein the bearing portion is rotatably arranged;

[0007] A sealing part, wherein the bearing part is rotatably connected to the sealing part through a rolling body, and one end of the bearing part is spaced apart from the sealing part;

[0008] A sealing ring is arranged around the interval between the bearing portion and the sealing portion;

[0009] A driving part, the driving part is arranged in the sealing part around the circumference of the sealing part;

[0010] One end of the driving part is connected to the sealing ring, and the driving part can drive the sealing ring to be pressed against a gap between the bearing part and the sealing part.

[0011] In some specific embodiments, a sealing cavity is provided in the sealing portion, and the sealing cavity is arranged around the interval between the bearing portion and the sealing portion;

[0012] The driving part and the sealing ring are arranged in the sealing cavity.

[0013] In some specific embodiments, the sealing portion includes:

[0014] An outer shell, one end of the outer shell having a concave platform disposed inwardly toward the inner portion of the outer shell;

[0015] One end of the bearing portion is inserted into the other end of the outer shell and is spaced toward the end of the concave platform;

[0016] The sealed cavity is enclosed by the outer wall of the recess and the inner wall of the outer shell.

[0017] In some specific embodiments, the bearing portion includes:

[0018] A ring body, one end of which is rotatably inserted into the outer shell and spaced toward the end of the concave platform;

[0019] The rolling body is arranged between the outer wall of the ring body and the inner wall of the outer shell;

[0020] The rolling body can roll around the circumference of the ring body.

[0021] In some specific embodiments, an outer diameter of an end of the ring body close to the recessed platform is larger than an outer diameter of the sealing ring.

[0022] In some specific embodiments, the inner diameter of one end of the ring body close to the recessed platform is smaller than or equal to the inner diameter of the sealing ring.

[0023] In some specific embodiments, a pull groove is provided around the circumference of the ring body at one end of the ring body away from the recessed platform.

[0024] In some specific embodiments, the driving unit includes:

[0025] A clamping ring, the clamping ring surrounds the concave platform and is arranged in the sealing cavity;

[0026] A convex structure is provided on the inner wall of the clamping ring;

[0027] The inner wall of one end of the clamping ring and the side wall of the protruding structure cooperate with each other and abut against the sealing ring;

[0028] A spring is arranged between the other end of the clamping ring and the inner wall of the sealing cavity.

[0029] In some specific embodiments, a sealing ring is provided on the outer wall of the concave platform and around the circumference of the concave platform;

[0030] The sealing ring is located between the outer wall of the concave platform and the inner wall of the clamping ring, and is respectively in contact with the outer wall of the concave platform and the inner wall of the clamping ring.

[0031] In some specific embodiments, a limiting ring is provided on the inner wall of the outer shell around the circumference of the concave platform;

[0032] The limiter is arranged around the circumference of the clamping ring and is movably abutted against the outer wall of the clamping ring.

[0033] The integrated sealed bearing of the present invention ensures the normal function of the original bearing by the rotational connection between the bearing part and the sealing part, and then the sealing ring arranged around the interval between the bearing part and the sealing part can be driven by the driving part to press the sealing ring against the interval between the bearing part and the sealing part to seal, thereby realizing the integration of the original sealing function and the bearing function. It replaces the existing method of separately setting up a sealing device in the bearing cavity of the aircraft engine, saves the installation space required for installation, reduces the number of required parts, and effectively improves the structural compactness and operational reliability of the aircraft engine.

[0034] Other features and advantages of the present invention will be described in the following description, and partly become obvious from the description, or be understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 A schematic diagram of an integrated sealed bearing in an embodiment of the present invention is shown;

[0037] Figure 2 A schematic diagram of the interior of an outer housing in an embodiment of the present invention is shown;

[0038] Figure 3 A schematic diagram of a clamping ring in an embodiment of the present invention is shown.

[0039] In the figure, 100, bearing part; 110, ring body; 111, rolling groove; 112, pull groove; 120, rolling body; 200, sealing part; 210, outer shell; 211, sealing groove; 212, anti-rotation groove; 213, boss; 220, recess; 300, driving part; 310, clamping ring; 311, fixing groove; 320, spring; 330, limiting ring; 340, sealing ring; 400, sealing ring. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Reference Figure 1 The present invention provides an integrated sealed bearing, comprising: a bearing portion 100, a sealing portion 200 and a driving portion 300. The bearing portion 100 is rotatably arranged. The bearing portion 100 is rotatably connected to the sealing portion 200 through a rolling body 120, and one end of the bearing portion 100 is spaced apart from the sealing portion 200. A sealing ring 400 is arranged around the gap between the bearing portion 100 and the sealing portion 200. The driving portion 300 is arranged in the sealing portion 200 in a circumferential direction around the sealing portion 200. One end of the driving portion 300 is connected to the sealing ring 400, and the driving portion 300 can drive the sealing ring 400 to be pressed against the gap between the bearing portion 100 and the sealing portion 200.

[0042] Specifically, one end of the bearing part 100 is spaced apart from the sealing part 200, and the rolling element 120 is disposed between the bearing part 100 and the sealing part 200. The bearing part 100 can rotate circumferentially relative to the sealing part 200 with the assistance of the rolling element 120, so that the end of the bearing part 100 spaced apart from the sealing part 200 can be rotatably connected to the sealing part 200 at the same time, thereby ensuring the normal function of the original bearing. A sealing ring 400 is disposed outside the space between the bearing part 100 and the sealing part 200 in the circumferential direction of the bearing part 100 and the sealing part 200, and the sealing ring 400 can cover the space between the bearing part 100 and the sealing part 200, thereby ensuring the sealing effect. At the same time, the driving part 300 is arranged outside the gap between the bearing part 100 and the sealing part 200, and is located on one side of the sealing ring 400. One end of the driving part 300 is connected to one side of the sealing ring 400. The driving part 300 can drive the sealing ring 400 to move in the direction close to the gap between the bearing part 100 and the sealing part 200, so that the sealing ring 400 can be pressed on the gap between the bearing part 100 and the sealing part 200, and the force of the sealing ring 400 pressing on the gap between the bearing part 100 and the sealing part 200 is increased to ensure the sealing effect. Through the bearing part 100 and the sealing part 200, the bearing function is realized while the sealing is performed, so that the integration of the sealing function and the bearing function is realized through the integrated structure. Instead of the existing method of separately setting a sealing device for the bearing cavity of the aircraft engine, the installation space required to be reserved during installation is saved, and the number of required parts is reduced, thereby effectively improving the structural compactness and operating reliability of the aircraft engine.

[0043] In some specific embodiments of the present invention, referring to Figure 1 A sealing cavity is provided in the sealing part 200, and the sealing cavity is arranged around the interval between the bearing part 100 and the sealing part 200. The driving part 300 and the sealing ring 400 are arranged in the sealing cavity.

[0044] Specifically, a sealing cavity is provided in the sealing part 200 around the circumference of the sealing part 200, so that the sealing cavity can be arranged around the interval between the bearing part 100 and the sealing part 200. The sealing ring 400 is arranged in the sealing cavity. Since the sealing cavity is arranged around the circumference of the sealing part 200 and around the interval between the bearing part 100 and the sealing part 200, it is convenient to arrange the sealing ring 400, so that the sealing ring 400 can be arranged around the circumference of the sealing part 200 and around the interval between the bearing part 100 and the sealing part 200 in the sealing cavity. The driving part 300 is also arranged in the sealing cavity, and one end of the driving part 300 is connected to one side of the sealing ring 400, so that the sealing ring 400 can be pressed against the interval between the bearing part 100 and the sealing part 200 through the driving part 300. While realizing the bearing function, the integration of the sealing function and the bearing function is also realized, and the driving part 300 and the sealing ring 400 can also be centrally arranged in the sealing cavity of the sealing part 200. It replaces the existing method of requiring a separate sealing device to be set up in the bearing cavity of an aircraft engine, saves the installation space required for installation, reduces the number of required parts, and thus effectively improves the structural compactness and operational reliability of the aircraft engine.

[0045] In some specific embodiments of the present invention, referring to Figure 1The sealing part 200 includes: an outer shell 210. A recessed platform 220 is provided at one end of the outer shell 210 and is concave toward the inside of the outer shell 210. One end of the bearing part 100 is inserted into the other end of the outer shell 210 and is spaced toward the end of the recessed platform 220. A sealed cavity is enclosed by the inner wall of the outer shell 210 and the outer wall of the recessed platform 220. Specifically, the outer shell 210 is cylindrical, one end of the outer shell 210 is an open structure, and the other end of the outer shell 210 is provided with a recessed structure that is concave toward the inside of the outer shell 210, so that the recessed platform 220 can be provided at one end of the outer shell 210 through the recessed structure, and a receiving groove that can be used to accommodate other components can be enclosed at one end of the outer shell 210 through the inner wall of the recessed platform 220. One end of the bearing portion 100 is coaxially inserted into the outer shell 210 from the open end of the outer shell 210, so that the end of the bearing portion 100 inserted into the outer shell 210 can be arranged opposite to the end of the recessed platform 220, and there is a gap between the end of the bearing portion 100 inserted into the outer shell 210 and the end of the recessed platform 220, so as to facilitate sealing. The rolling element 120 is arranged between the outer periphery of the end of the bearing portion 100 inserted into the outer shell 210 and the inner wall of the outer shell 210, so that the bearing portion 100 can rotate circumferentially relative to the outer shell 210, thereby realizing the bearing function. Among them, the outer diameter of the concave platform 220 is smaller than the inner diameter of the outer shell 210, so that the inner wall of the outer shell 210 and the radial outer wall of the concave platform 220 can enclose a sealed cavity, and the drive unit 300 and the sealing ring 400 can be integrated between the inner wall of the outer shell 210 and the outer wall of the concave platform 220, so as to facilitate the sealing of the gap between the end of the bearing unit 100 inserted in the outer shell 210 and the end of the concave platform 220. While realizing the bearing function, the integration of the sealing function and the bearing function is also realized, saving the installation space originally required to be reserved when installing the bearing, reducing the space waste in the aircraft engine, and reducing the number of required parts, thereby effectively improving the structural compactness and operating reliability of the aircraft engine.

[0046] Furthermore, a sealing groove 211 is provided on the outer wall of the outer shell 210 in the circumferential direction thereof, and an O-ring can be embedded in the sealing groove 211, thereby forming an auxiliary static seal after installation, thereby reducing axial leakage between the outer shell 210 and the installation position on the aircraft engine.

[0047] Further, refer to Figure 2 An anti-rotation groove 212 is provided on the outer wall of the outer shell 210, and the anti-rotation groove 212 can be connected and matched with the installation position on the aircraft engine, so as to fix the outer shell 210 and prevent the outer shell 210 from rotating with the ring body 110.

[0048] Furthermore, the recessed platform 220 and the outer shell 210 are an integrated structure, thereby improving the connection stability between the components.

[0049] In some specific embodiments of the present invention, referring to Figure 1 The bearing part 100 includes: a ring body 110 and a rolling body 120. One end of the ring body 110 is coaxially inserted into the outer shell 210 and arranged at intervals toward the end of the concave platform 220. The rolling body 120 is arranged between the outer wall of the ring body 110 and the inner wall of the outer shell 210. The rolling body 120 can roll around the circumference of the ring body 110. Specifically, the ring body 110 is cylindrical, and one axial end of the ring body 110 is coaxially inserted into the outer shell 210 by the open end of the outer shell 210 and there is a gap between the end of the recessed platform 220, and the rolling body 120 is arranged between the outer wall of the end of the ring body 110 inserted in the outer shell 210 and the inner wall of the outer shell 210. The rolling body 120 is in rolling contact with the outer wall of the end of the ring body 110 inserted in the outer shell 210 and the inner wall of the outer shell 210 respectively, so that the rolling body 120 can rotate and move around the circumference of the ring body 110 between the outer wall of the end of the ring body 110 inserted in the outer shell 210 and the inner wall of the outer shell 210, thereby realizing the integration of sealing function and bearing function.

[0050] In some specific embodiments of the present invention, referring to Figure 1 , the outer diameter of the end of the ring body 110 close to the concave platform 220 is larger than the outer diameter of the sealing ring 400. Specifically, the outer diameter of the ring body 110 is larger than the outer diameter of the sealing ring 400. When one end of the ring body 110 is inserted into the outer shell 210, the end surface of the end of the ring body 110 inserted into the outer shell 210 is spaced toward the end of the concave platform 220. Since the outer diameter of the ring body 110 is larger than the outer diameter of the sealing ring 400, the outer side of the end surface of the end of the ring body 110 inserted into the outer shell 210 is located radially outside the sealing ring 400, so that the radial outer wall of the concave platform 220, the inner wall of the outer shell 210 and the outer side of the end surface of the end of the ring body 110 inserted into the outer shell 210 are surrounded to form a sealing cavity. When the sealing ring 400 is pressed against the gap between the end of the recess 220 and the end of the ring body 110 inserted in the outer shell 210, the sealing ring 400 can contact the outer side of the end surface of the ring body 110 inserted in the outer shell 210, so that the sealing ring 400 can be supported by the outer side of the end surface of the ring body 110 inserted in the outer shell 210, so that the sealing ring 400 is pressed and set to ensure the sealing performance.

[0051] In some specific embodiments of the present invention, referring to Figure 1, the inner diameter of the end of the ring body 110 close to the concave platform 220 is smaller than or equal to the inner diameter of the sealing ring 400. Specifically, the inner diameter of the ring body 110 is smaller than or equal to the inner diameter of the sealing ring 400. When one end of the ring body 110 is inserted into the outer shell 210, the inner side of the end surface of the end of the ring body 110 inserted into the outer shell 210 is located inside the sealing ring 400 in the radial direction, so that the sealing ring 400 is in contact with the outer side of the end surface of the end of the ring body 110 inserted into the outer shell 210, thereby improving the sealing effect of the sealing ring 400 on the interval between the end of the concave platform 220 and the end of the ring body 110 inserted into the outer shell 210.

[0052] In some specific embodiments of the present invention, referring to Figure 1 , a pull groove 112 is provided around the circumference of the ring body 110 at one end of the ring body 110 away from the concave platform 220. Specifically, a pull groove 112 is provided around the circumference of the ring body 110 on the outer wall of the end of the ring body 110 away from the concave platform 220. When the integrated sealed bearing needs to be disassembled, an external tool can be engaged with the pull groove 112, so that the pull groove 112 is used to provide force to pull out the ring body, thereby improving the disassembly efficiency.

[0053] Furthermore, the rolling body 120 includes: a roller and a retainer. A rolling groove 111 is arranged on the outer wall of the ring body 110 in the circumferential direction of the ring body 110, and the rolling groove 111 is located between the drawing groove 112 and one end of the ring body 110 inserted in the outer shell 210. The size of the roller is adapted to the size of the rolling groove 111, and the roller is arranged in the rolling groove 111 so that the roller can roll in the rolling groove 111, thereby realizing the bearing function, and the rolling direction of the roller can be limited by the rolling groove 111, thereby ensuring stability. The retainer is arranged along the circumferential direction of the ring body 110, and the two sides of the retainer are respectively located on the two sides of the roller, that is, one side of the retainer is arranged between the outer wall of the ring body 110 between the rolling groove 111 and the drawing groove 112 and the inner wall of the outer shell 210, and the other side is arranged between the outer wall of the ring body 110 between the rolling groove 111 and the end of the concave platform 220 and the inner wall of the outer shell 210. The middle part of the cage is provided with a through groove that can surround both sides of the roller along the circumference of the ring body 110, so as to hold and support the roller in the rolling groove 111. Generally, the cage does not contact the outer wall of the ring body 110 or the inner wall of the outer shell 210, so as to ensure smooth rotation of the roller and the cage, and when the cage is offset, it will be restored by the guidance of the outer wall of the ring body 110 or the inner wall of the outer shell 210 when the cage collides with the outer wall of the ring body 110 or the inner wall of the outer shell 210, so as to ensure stability.

[0054] Furthermore, there are multiple rollers, which are arranged in rolling grooves 111 to roll evenly around the circumference of the ring body 110, ensuring running stability. At the same time, a plurality of through grooves are sequentially opened in the middle of the cage along the circumference of the ring body 110, and the plurality of through grooves are arranged one by one with the plurality of rollers, and each through groove surrounds the two sides of the corresponding roller, and the plurality of through grooves can ensure that the plurality of rollers are evenly distributed when maintaining rotation and revolution, thereby ensuring stability.

[0055] In some specific embodiments of the present invention, referring to Figure 1 The driving part 300 includes: a clamping ring 310 and a spring 320. The clamping ring 310 is arranged in the sealing cavity around the circumference of the recess 220. A protruding structure is arranged on the inner wall of the clamping ring 310. The inner wall of one end of the clamping ring 310 and the side wall of the protruding structure cooperate with each other and abut against the sealing ring 400. The spring 320 is arranged between the other end of the clamping ring 310 and the inner wall of the sealing cavity. Specifically, the clamping ring 310 is arranged around the circumference of the recess 220 between the outer wall of the recess 220 and the inner wall of the outer shell 210. The inner wall of the clamping ring 310, i.e., the side close to the concave platform 220, is provided with a protruding structure along the radial direction of the concave platform 220. The protruding structure and the end of the clamping ring 310 cooperate with each other. The side close to the sealing ring 400 through the protruding structure can abut against the side of the sealing ring 400 away from the ring body 110, and the inner wall of the end of the clamping ring 310 close to the sealing ring 400 can abut against the side of the sealing ring 400 away from the concave platform 220. The spring 320 is provided between the end of the clamping ring 310 away from the sealing ring 400 and the inner wall of the outer shell 210. Under the elastic force of the spring 320, the clamping ring 310 can be driven to be closer to the sealing ring 400, thereby pushing the sealing ring 400 in the direction close to the abutting position between the ring body 110 and the concave platform 220, so that the sealing ring 400 can be pressed against the abutting position between the ring body 110 and the concave platform 220, thereby ensuring the sealing effect.

[0056] Further, refer to Figure 3 A fixing groove 311 is provided on the outer wall of the clamping ring 310 along the axial direction of the outer shell 210. Figure 2 A boss 213 is provided on the inner wall of the outer shell 210 along the axial direction of the outer shell 210, and the fixing groove 311 and the boss 213 are adapted to each other, so that the boss 213 can be engaged with the fixing groove 311, thereby fixing the setting position of the clamping ring 310 and preventing the clamping ring 310 from rotating around the circumference of the recess 220.

[0057] In some specific embodiments of the present invention, referring to Figure 1A sealing ring 340 is arranged on the outer wall of the concave platform 220 around the circumference of the concave platform 220. The sealing ring 340 is located between the outer wall of the concave platform 220 and the inner wall of the clamping ring 310, and respectively abuts against the outer wall of the concave platform 220 and the inner wall of the clamping ring 310. Specifically, the sealing ring 340 is arranged on the outer wall of the concave platform 220 around the circumference of the concave platform 220. The sealing ring 340 is located on the side of the protruding structure away from the sealing ring 400, and is located between the outer wall of the concave platform 220 and the inner wall of the clamping ring 310, and respectively abuts against the outer wall of the concave platform 220 and the inner wall of the clamping ring 310. The sealing ring 340 can perform axial sealing between the clamping ring 310 and the concave platform 220, thereby ensuring the sealing effect.

[0058] In some specific embodiments of the present invention, referring to Figure 1 The inner wall of the outer shell 210 is provided with a limit ring 330 around the circumference of the concave platform 220. The limit ring 330 is provided around the circumference of the clamping ring 310 and is movably abutted against the outer wall of the clamping ring 310. The limit ring 330 is fixedly provided on the inner wall of the outer shell 210 around the circumference of the concave platform 220, and the inner side of the limit ring 330 can be movably abutted against the outer wall of the clamping ring 310, so that the moving direction of the clamping ring 310 can be limited by the limit ring 330, so that the clamping ring 310 and the sealing ring 400 close to the clamping ring 310 are axially limited to ensure the operation stability.

[0059] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An integrated sealed bearing, characterized in that: include: A bearing portion (100), wherein the bearing portion (100) is rotatably arranged; A sealing portion (200), wherein the bearing portion (100) is rotatably connected to the sealing portion (200) via a rolling body (120), and one end of the bearing portion (100) is spaced apart from the sealing portion (200); A sealing ring (400) is arranged around the gap between the bearing portion (100) and the sealing portion (200); A driving portion (300), the driving portion (300) being arranged in the sealing portion (200) in a circumferential direction around the sealing portion (200); One end of the driving part (300) is connected to the sealing ring (400), and the driving part (300) can drive the sealing ring (400) to be pressed against the gap between the bearing part (100) and the sealing part (200).

2. The integrated sealed bearing according to claim 1, characterized in that: A sealing cavity is provided in the sealing portion (200), and the sealing cavity is arranged in a spaced relationship between the bearing portion (100) and the sealing portion (200); The driving part (300) and the sealing ring (400) are arranged in the sealing cavity.

3. The integrated sealed bearing according to claim 2, characterized in that: The sealing portion (200) comprises: An outer shell (210), one end of the outer shell (210) being concavely provided with a concave platform (220) facing the interior of the outer shell (210); One end of the bearing portion (100) is inserted into the other end of the outer shell (210) and is spaced apart toward the end of the concave platform (220); The sealed cavity is enclosed by the outer wall of the recessed platform (220) and the inner wall of the outer shell (210).

4. The integrated sealed bearing according to claim 3, characterized in that: The bearing portion (100) comprises: A ring body (110), one end of which is rotatably inserted into the outer shell (210) and spaced apart toward the end of the concave platform (220); The rolling body (120) is arranged between the outer wall of the ring body (110) and the inner wall of the outer shell (210); The rolling body (120) can roll around the circumference of the ring body (110).

5. The integrated sealed bearing according to claim 4, characterized in that: The outer diameter of one end of the ring body (110) close to the recessed platform (220) is greater than the outer diameter of the sealing ring (400).

6. The integrated sealed bearing according to claim 4, characterized in that: The inner diameter of one end of the ring body (110) close to the recessed platform (220) is smaller than or equal to the inner diameter of the sealing ring (400).

7. The integrated sealed bearing according to claim 4, characterized in that: A drawing groove (112) is provided in the circumferential direction of the ring body (110) at one end of the ring body (110) away from the recessed platform (220).

8. The integrated sealed bearing according to claim 4, characterized in that: The driving unit (300) comprises: A clamping ring (310), the clamping ring (310) surrounding the concave platform (220) in a circumferential direction and arranged in the sealing cavity; A protrusion structure is provided on the inner wall of the clamping ring (310); The inner wall of one end of the clamping ring (310) and the side wall of the protruding structure cooperate with each other and abut against the sealing ring (400); A spring (320), wherein the spring (320) is arranged between the other end of the clamping ring (310) and the inner wall of the sealing cavity.

9. The integrated sealed bearing according to claim 8, characterized in that: A sealing ring (350) is arranged on the outer wall of the concave platform (220) in a circumferential direction around the concave platform (220); The sealing ring (350) is located between the outer wall of the recessed platform (220) and the inner wall of the clamping ring (310), and is respectively in contact with the outer wall of the recessed platform (220) and the inner wall of the clamping ring (310).

10. The integrated sealed bearing according to claim 8, characterized in that: A limiting ring (340) is provided on the inner wall of the outer shell (210) around the circumference of the recessed platform (220); The limiting ring (340) is arranged around the circumference of the clamping ring (310) and is movably abutted against the outer wall of the clamping ring (310).

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