Low-noise ball bearing

Abstract

The invention relates to the technical field of bearings, and discloses a low-noise ball bearing which comprises a supporting mechanism, the supporting mechanism comprises a supporting frame, the outer surface of the supporting frame is fixedly connected with a laser transmitter, and the outer wall of the side, close to the laser transmitter, of the supporting frame is fixedly connected with a light source. A first hydraulic rod is fixedly connected to the inner wall of the side, away from the laser transmitter, of the supporting frame, a first sliding frame is fixedly connected to the output end of the first hydraulic rod, a first connecting frame is fixedly connected to the outer wall of the side, away from the first hydraulic rod, of the first sliding frame, and a second hydraulic rod is fixedly connected to the inner wall of the first connecting frame; in the bearing installation process, the outer ring and the inner ring are positioned through the supporting mechanism and the adjusting mechanism, then the stability of the installed bearing is improved, a gap of the bearing is irradiated through the light source, the gap of the installed bearing is analyzed through the optical sensor, then the abrasion of the bearing is reduced, and the service life of the bearing is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of bearings, and particularly to a low-noise ball bearing. Background Art

[0002] A ball bearing is a precision component widely used in mechanical equipment, mainly used to reduce the friction between rotating parts and support radial and axial loads. It consists of an inner ring, an outer ring, balls and a cage. Through the rolling movement of the balls between the inner and outer rings, efficient energy transfer and low-friction operation are achieved. Ball bearings have the advantages of strong load-bearing capacity, long service life, high rotational speed, etc., and are widely used in fields such as automobiles, aerospace, and industrial machinery.

[0003] The patent application with the application number CN202223044803.6 discloses a low-noise ball bearing cage, including a cage body and ball grooves. Two or more ball grooves are evenly opened on the circumferential side of the cage body. Press rings are slidably installed on both the upper and lower sides of the cage body. Two or more cylindrical blocks are evenly and fixedly installed at one end of the press ring close to the cage body, and one end of the cylindrical block extends into the cage body and is fixedly installed with a slider. The slider is slidably installed inside the cage body, and a rolling ball is rotatably installed at one end of the slider.

[0004] In summary, during the bearing installation process, if the gap is too large or the installation is not in place, it may cause abnormal vibration when the bearing rotates, thereby increasing the noise. Vibration not only affects the smooth operation of the equipment, but may also accelerate the wear of the bearing, shorten the service life, and even cause equipment failures.

[0005] Therefore, we have proposed a low-noise ball bearing. Summary of the Invention

[0006] Aiming at the deficiencies of the prior art, the present invention provides a low-noise ball bearing to solve the problems raised in the above background art.

[0007] To achieve the above object, the present invention provides the following technical solution: A low-noise ball bearing, comprising a bearing structure and a support mechanism. The support mechanism includes a support frame, on the outer surface of which a laser emitter is fixedly connected. On the outer wall of the support frame close to the laser emitter, a light source is fixedly connected. On the inner wall of the support frame far from the laser emitter, a first hydraulic rod is fixedly connected. The output end of the first hydraulic rod is fixedly connected with a first sliding frame. On the outer wall of the first sliding frame far from the first hydraulic rod, a first connecting frame is fixedly connected. Inside the first connecting frame, a second hydraulic rod is fixedly connected. At the output end of the second hydraulic rod, a clamping assembly is provided. On the outer wall of the support frame, a support rod is fixedly connected. Inside the end of the support rod far from the support frame, a first push rod is fixedly connected. At the top of the support frame, a bearing mechanism is provided. Further included are: An adjusting mechanism, including a second sliding frame fixedly connected to the output end of the first push rod. On the outer surface of the second sliding frame, a third sliding groove is formed. On the bottom outer wall of the second sliding frame, an optical sensor is fixedly connected. On the top outer surface of the second sliding frame, a second push rod is fixedly connected. The output end of the second push rod is fixedly connected with a sliding block. On the outer wall of the second sliding frame close to the optical sensor, a laser receiver is fixedly connected. Inside the sliding block, a first auxiliary rod is rotatably connected through a rotating shaft. At the end of the first auxiliary rod far from the sliding block, an auxiliary assembly is provided. The first push rod is used to adjust the distance between the second sliding frame and the support frame.

[0008] According to the above technical solution, the auxiliary assembly includes a third sliding frame rotatably connected to the first auxiliary rod. The third sliding frame is slidably connected to the inner wall of the third sliding groove. At the bottom of the third sliding frame, a third auxiliary rod is rotatably connected through a rotating shaft. The third sliding groove limits the sliding distance of the third sliding frame.

[0009] According to the above technical solution, at the bottom of the third sliding frame, a second clamping plate is provided. Inside the second clamping plate, the third auxiliary rod is rotatably connected through a rotating shaft. On the outer wall of the second clamping plate close to the third sliding frame, a fixed shaft is fixedly connected. At the end of the fixed shaft far from the second clamping plate, a second connecting frame is fixedly connected. The second clamping plate is elastic and deforms when squeezed.

[0010] According to the above technical solution, inside the second connecting frame, a second auxiliary rod is rotatably connected through a rotating shaft. At the end of the second auxiliary rod far from the second connecting frame, it is rotatably connected to the third auxiliary rod. The second connecting frame enables the third auxiliary rod to deflect at an angle through the second auxiliary rod.

[0011] According to the above technical solution, the clamping assembly includes a fixing frame fixedly connected to the output end of the second hydraulic rod. A motor is rotatably connected to the bottom outer wall of the fixing frame through a rotating shaft. The output end of the motor is fixedly connected to a driving roller. A second rotating rod is rotatably connected to the inner wall of the fixing frame through a rotating shaft. One end of the second rotating rod away from the fixing frame is rotatably connected to a first rotating rod through a rotating shaft. One end of the first rotating rod away from the second rotating rod is rotatably connected to a first connecting frame through a rotating shaft. The fixing frame pulls the first rotating rod through the second rotating rod to deflect.

[0012] According to the above technical solution, one end of the first rotating rod away from the first connecting frame is rotatably connected to a first clamping plate through a rotating shaft. A spring is fixedly connected to the outer wall of the first clamping plate close to the first rotating rod. One end of the spring away from the first clamping plate is fixedly connected to the first rotating rod. The spring adjusts the clamping angle of the first clamping plate.

[0013] According to the above technical solution, the bearing structure includes an outer ring provided on the top of the support frame. A groove is formed on the outer surface of the outer ring. A first sliding groove is formed on the inner wall of the outer ring. A lubricating block is fixedly connected to the inner wall of the first sliding groove. An inner ring is provided inside the outer ring. A second sliding groove is formed on the outer surface of the inner ring. The first sliding groove and the second sliding groove are elliptical openings with the same curvature.

[0014] According to the above technical solution, a retaining body is provided on the outside of the outer ring close to the inner ring. A through hole is formed on the outer surface of the retaining body. A first ball is rotatably connected to the inner wall of the retaining body. A second ball is rotatably connected to the inner wall of the retaining body on the side away from the first ball. The diameter of the first ball is larger than that of the second ball. The diameter of the first ball decreases in the direction of the second ball, and the diameter of the second ball increases in the direction of the first ball.

[0015] Compared with the prior art, the present invention provides a low-noise ball bearing, which has the following beneficial effects: 1. By providing a low-noise ball bearing in the present invention, during the installation process of the bearing, the outer ring and the inner ring are positioned through the support mechanism and the adjustment mechanism, thereby improving the stability of the bearing after installation. The gap of the bearing is irradiated by a light source, and the gap of the bearing after installation is analyzed by an optical sensor, thereby reducing the wear of the bearing and increasing the service life.

[0016] 2. By providing the bearing structure in the present invention, the large-diameter balls close to the first ball are mainly responsible for bearing the main load, while the small balls close to the second ball are used to fill the gap, thereby improving the rotational speed limit while maintaining the bearing capacity. By adopting the non-circular first sliding groove and the second sliding groove, the load can be dispersed to more first balls, thereby reducing local wear and extending the service life.

[0017] 3. By providing a support mechanism and an adjustment mechanism, when installing a low-noise bearing, first adjust the distance between the clamping components through the first hydraulic rod, fix the outer ring using the clamping components, and fix the inner ring through the auxiliary components. Adjust the distance between the second sliding frame and the clamping components through the first push rod, and push the inner ring into the inner part of the outer ring. The first hydraulic rod causes the central axes of the outer ring and the inner ring to deviate, so that the first balls and the second balls can enter between the outer ring and the inner ring in the correct arrangement. Through the detection of the laser emitter and the laser receiver, ensure that the central axes of the outer ring and the inner ring are aligned after installation.

[0018] 4. By providing an adjustment mechanism, the second push rod drives the sliding block to displace, drives the first auxiliary rod to exert a thrust on the third sliding frame, and then transmits the acting force to the second clamping plate through the second sliding frame, causing it to contract inward to form a radial pressure, realizing the adaptive clamping and fixing of the wall surfaces of inner rings of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic front view of the overall structure of the present invention; Figure 2 is an exploded schematic view of the bearing structure of the present invention; Figure 3 is a schematic view of the structures of the support mechanism and the adjustment mechanism of the present invention; Figure 4 is a schematic view of the support mechanism of the present invention; Figure 5 is a schematic view of the clamping component structure of the present invention; Figure 6 is a schematic view of the adjustment mechanism structure of the present invention; Figure 7 is a schematic view of the auxiliary component structure of the present invention; Figure 8 of the present invention Figure 1 is an enlarged schematic view of A in.

[0020] In the figure: 1. Bearing structure; 101. Outer ring; 102. Groove; 103. First sliding groove; 104. Lubricating block; 105. Retaining body; 106. Through hole; 107. First ball; 108. Second ball; 109. Inner ring; 110. Second sliding groove; 2. Support mechanism; 201. Support frame; 202. Laser emitter; 203. Light source; 204. First hydraulic rod; 205. First sliding frame; 206. First connecting frame; 207. Second hydraulic rod; 208. Clamping assembly; 2081. First rotating rod; 2082. First clamping plate; 2083. Spring; 2084. Second rotating rod; 2085. Fixed frame; 2086. Motor; 2087. Driving roller; 209. Support rod; 210. First push rod; 3. Adjusting mechanism; 301. Second sliding frame; 302. Optical sensor; 303. Third sliding groove; 304. Second push rod; 305. Sliding block; 306. First auxiliary rod; 307. Laser receiver; 308. Auxiliary assembly; 3081. Third sliding frame; 3082. Second clamping plate; 3083. Fixed shaft; 3084. Second connecting frame; 3085. Second auxiliary rod; 3086. Third auxiliary rod. Detailed implementation mode

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0022] Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as a limitation of the present invention.

[0023] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. 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.

[0024] Example 1: Refer to Figures 1-4, the present invention provides a technical solution: a low-noise ball bearing, including a bearing structure 1 and a support mechanism 2. The support mechanism 2 includes a support frame 201. A laser emitter 202 is fixedly connected to the outer surface of the support frame 201. A light source 203 is fixedly connected to the outer wall of the support frame 201 near the laser emitter 202. A first hydraulic rod 204 is fixedly connected to the inner wall of the support frame 201 away from the laser emitter 202. The output end of the first hydraulic rod 204 is fixedly connected to a first sliding frame 205. A first connecting frame 206 is fixedly connected to the outer wall of the first sliding frame 205 away from the first hydraulic rod 204. A second hydraulic rod 207 is fixedly connected to the inner wall of the first connecting frame 206. A clamping assembly 208 is arranged at the output end of the second hydraulic rod 207. A support rod 209 is fixedly connected to the outer wall of the support frame 201. A first push rod 210 is fixedly connected to the inner wall of the end of the support rod 209 away from the support frame 201. A bearing mechanism is arranged at the top of the support frame 201. It further includes: An adjustment mechanism 3, including a second sliding frame 301 fixedly connected to the output end of the first push rod 210. A third sliding groove 303 is formed on the outer surface of the second sliding frame 301. An optical sensor 302 is fixedly connected to the bottom outer wall of the second sliding frame 301. A second push rod 304 is fixedly connected to the top outer surface of the second sliding frame 301. The output end of the second push rod 304 is fixedly connected to a sliding block 305. A laser receiver 307 is fixedly connected to the outer wall of the second sliding frame 301 near the optical sensor 302. A first auxiliary rod 306 is rotatably connected to the inner wall of the sliding block 305 through a rotating shaft. An auxiliary assembly 308 is arranged at the end of the first auxiliary rod 306 away from the sliding block 305. The first push rod 210 is used to adjust the distance between the second sliding frame 301 and the support frame 201. When installing the low-noise bearing, the operation steps are as follows: First, use the first hydraulic rod 204 to control the distance between the clamping assemblies 208, and use the clamping assemblies 208 to clamp and fix the outer ring 101. At the same time, clamp and fix the inner ring 109 through the auxiliary assembly 308. Control the first push rod 210 to adjust the distance between the second sliding frame 301 and the clamping assemblies 208, and then use the first push rod 210 to push the inner ring 109 into the inner part of the outer ring 101. Use the first hydraulic rod 204 to make the central axes of the outer ring 101 and the inner ring 109 deviate, so that the first balls 107 and the second balls 108 can enter between the outer ring 101 and the inner ring 109 in the correct arrangement. Through the laser emitter 202 and the laser receiver 307, determine whether the central axes of the outer ring 101 and the inner ring 109 are on the same straight line after the installation of the outer ring 101 and the inner ring 109 is completed.

[0025] The bearing structure 1 includes an outer ring 101 disposed on the top of the support frame 201. A groove 102 is formed on the outer surface of the outer ring 101, and a first sliding groove 103 is formed on the inner wall of the outer ring 101. A lubricating block 104 is fixedly connected to the inner wall of the first sliding groove 103. The lubricating block 104 is provided with a micron-level oil storage cavity processed specially, and the cavity is filled with a solid lubricant. During the operation of the bearing, the first ball 107 and the second ball 108 continuously rub against the lubricating block 104, thus generating heat. Once the temperature exceeds 80 °C, the phase change material will be activated, prompting the solid lubricant to turn into a liquid and be released. These released lubricants can effectively reduce the friction force between the bearing components, and finally achieve the effect of reducing noise. An inner ring 109 is arranged inside the outer ring 101. A second sliding groove 110 is formed on the outer surface of the inner ring 109. The first sliding groove 103 and the second sliding groove 110 are oval openings with the same curvature. A retaining body 105 is arranged on the outside of the outer ring 101 close to the inner ring 109. Through holes 106 are formed on the outer surface of the retaining body 105. The inner wall of the retaining body 105 is connected with the first ball 107 in a rolling manner. The inner wall of the retaining body 105 on the side away from the first ball 107 is connected with the second ball 108 in a rolling manner. The diameter of the first ball 107 is larger than that of the second ball 108. The diameter of the first ball 107 decreases in the direction of the second ball 108, and the diameter of the second ball 108 increases in the direction of the first ball 107. The large-diameter balls close to the first ball 107 of the low-noise bearing mainly bear the main load, while the small balls close to the second ball 108 are responsible for filling the gaps, thereby being able to maintain the bearing capacity of the bearing and effectively increasing its upper speed limit. The non-circular first sliding groove 103 and the second sliding groove 110 can disperse the load to more first balls 107, thus reducing local wear and extending the service life of the bearing.

[0026] Embodiment 2: Please refer to Figure 5, based on the first embodiment, the present invention provides a technical solution: The clamping assembly 208 includes a fixing frame 2085 fixedly connected to the output end of the second hydraulic rod 207. The outer wall of the bottom of the fixing frame 2085 is rotatably connected to a motor 2086 through a rotating shaft. The output end of the motor 2086 is fixedly connected to a driving roller 2087. The inner wall of the fixing frame 2085 is rotatably connected to a second rotating rod 2084 through a rotating shaft. One end of the second rotating rod 2084 away from the fixing frame 2085 is rotatably connected to a first rotating rod 2081 through a rotating shaft. One end of the first rotating rod 2081 away from the second rotating rod 2084 is rotatably connected to the first connecting frame 206 through a rotating shaft. The fixing frame 2085 pulls the first rotating rod 2081 through the second rotating rod 2084 to deflect. One end of the first rotating rod 2081 away from the first connecting frame 206 is rotatably connected to a first clamping plate 2082 through a rotating shaft. A spring 2083 is fixedly connected to the outer wall of the side of the first clamping plate 2082 close to the first rotating rod 2081. One end of the spring 2083 away from the first clamping plate 2082 is fixedly connected to the first rotating rod 2081. When the second hydraulic rod 207 pushes the driving roller 2087 towards the outer ring 101 with the help of the fixing frame 2085, the fixing frame 2085 will drive the first rotating rod 2081 to flip towards the outer ring 101 through the second rotating rod 2084. The first clamping plate 2082 clamps and fixes the outer ring 101. At the same time, the spring 2083 plays a role in adjusting the clamping angle of the first clamping plate 2082, thereby increasing the contact area between the first clamping rod and the outer ring 101.

[0027] Embodiment Three: Please refer to Figures 6-8 , based on the first and second embodiments, the present invention provides a technical solution: The auxiliary assembly 308 includes a third sliding frame 3081 rotatably connected to the first auxiliary rod 306. The third sliding frame 3081 is slidably connected to the inner wall of the third sliding groove 303. The bottom of the third sliding frame 3081 is rotatably connected to a third auxiliary rod 3086 through a rotating shaft. The third sliding groove 303 limits the sliding distance of the third sliding frame 3081. A second clamping plate 3082 is provided at the bottom of the third sliding frame 3081. The inner wall of the second clamping plate 3082 is rotatably connected to the third auxiliary rod 3086 through a rotating shaft. A fixed shaft 3083 is fixedly connected to the outer wall of the side of the second clamping plate 3082 close to the third sliding frame 3081. One end of the fixed shaft 3083 away from the second clamping plate 3082 is fixedly connected to a second connecting frame 3084. The second clamping plate 3082 is elastic and deforms when squeezed. The second push rod 304 pulls the sliding block 305 to make the first auxiliary rod 306 push the third sliding frame 3081, and then pushes the second clamping plate 3082 through the second sliding frame 301 to squeeze the inner wall of the inner ring 109 and clamp and fix the inner ring 109.

[0028] The inner wall of the second connecting frame 3084 is rotatably connected to a second auxiliary rod 3085 through a rotating shaft. One end of the second auxiliary rod 3085 away from the second connecting frame 3084 is rotatably connected to a third auxiliary rod 3086. When the side of the second force-bearing plate close to the fixed shaft 3083 is squeezed, the second force-bearing plate pushes the second connecting frame 3084 through the fixed shaft 3083. The second connecting frame 3084 makes the third auxiliary rod 3086 deflect in angle through the second auxiliary rod 3085, thereby increasing the contact area between the second clamping plate 3082 and the inner wall of the inner ring 109, and thus facilitating the installation of the inner ring 109 and the outer ring 101.

[0029] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0030] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A low-noise ball bearing, comprising a bearing structure (1) and a support mechanism (2), the support mechanism (2) comprising a support frame (201), the outer surface of the support frame (201) being fixedly connected to a laser emitter (202), the outer wall of the support frame (201) on a side close to the laser emitter (202) being fixedly connected to a light source (203), the inner wall of the support frame (201) on a side away from the laser emitter (202) being fixedly connected to a first hydraulic rod (204), the output end of the first hydraulic rod (204) being fixedly connected to a first sliding frame (205), the The first connecting frame (206) is fixedly connected to the outer wall of the first sliding frame (205) at one side away from the first hydraulic rod (204), the second hydraulic rod (207) is fixedly connected to the inner wall of the first connecting frame (206), the output end of the second hydraulic rod (207) is provided with a clamping assembly (208), the outer wall of the support frame (201) is fixedly connected to a support rod (209), the inner wall of one end of the support rod (209) away from the support frame (201) is fixedly connected to a first push rod (210), and the top of the support frame (201) is provided with a bearing mechanism, characterized in that: Also included are: The adjustment mechanism (3) comprises a second sliding frame (301) fixedly connected to the output end of the first push rod (210), the outer surface of the second sliding frame (301) is provided with a third sliding groove (303), the bottom outer wall of the second sliding frame (301) is fixedly connected to an optical sensor (302), the top outer surface of the second sliding frame (301) is fixedly connected to a second push rod (304), the output end of the second push rod (304) is fixedly connected to a sliding block (305), the outer wall of the second sliding frame (301) on a side close to the optical sensor (302) is fixedly connected to a laser receiver (307), the inner wall of the sliding block (305) is rotatably connected to a first auxiliary rod (306) via a rotating shaft, and an auxiliary component (308) is provided at one end of the first auxiliary rod (306) away from the sliding block (305), and the first push rod (210) is used to adjust the distance between the second sliding frame (301) and the support frame (201).

2. A low noise ball bearing according to claim 1, characterized in that: The auxiliary component (308) comprises a third sliding frame (3081) rotatably connected to the first auxiliary rod (306); the third sliding frame (3081) is slidably connected to the inner wall of the third sliding groove (303); the bottom of the third sliding frame (3081) is rotatably connected to the third auxiliary rod (3086) via a rotating shaft; the third sliding groove (303) limits the sliding distance of the third sliding frame (3081).

3. A low noise ball bearing according to claim 2, characterized in that: A second clamping plate (3082) is provided at the bottom of the third sliding frame (3081); an inner wall of the second clamping plate (3082) is rotatably connected to the third auxiliary rod (3086) via a rotating shaft; an outer wall of the second clamping plate (3082) on one side close to the third sliding frame (3081) is fixedly connected to a fixed shaft (3083); an end of the fixed shaft (3083) away from the second clamping plate (3082) is fixedly connected to a second connecting frame (3084); and the second clamping plate (3082) is elastic and deforms when squeezed.

4. A low noise ball bearing according to claim 3, characterized in that: The inner wall of the second connecting frame (3084) is rotatably connected to a second auxiliary rod (3085) via a rotating shaft; one end of the second auxiliary rod (3085) away from the second connecting frame (3084) is rotatably connected to a third auxiliary rod (3086); the second connecting frame (3084) causes the third auxiliary rod (3086) to perform angular deflection via the second auxiliary rod (3085).

5. A low noise ball bearing according to claim 1, characterized in that: The clamping assembly (208) comprises a fixed frame (2085) fixedly connected to the output end of the second hydraulic rod (207); the bottom outer wall of the fixed frame (2085) is rotatably connected to a motor (2086) via a rotating shaft; the output end of the motor (2086) is fixedly connected to a driving roller (2087); the inner wall of the fixed frame (2085) is rotatably connected to a second rotating rod (2084) via a rotating shaft; one end of the second rotating rod (2084) away from the fixed frame (2085) is rotatably connected to a first rotating rod (2081) via a rotating shaft; one end of the first rotating rod (2081) away from the second rotating rod (2084) is rotatably connected to the first connecting frame (206) via a rotating shaft; and the fixed frame (2085) pulls the first rotating rod (2081) to deflect via the second rotating rod (2084).

6. A low noise ball bearing according to claim 5, characterized in that: One end of the first rotating rod (2081) away from the first connecting frame (206) is rotatably connected to the first clamping plate (2082) via a rotating shaft; a spring (2083) is fixedly connected to an outer wall of one side of the first clamping plate (2082) close to the first rotating rod (2081); one end of the spring (2083) away from the first clamping plate (2082) is fixedly connected to the first rotating rod (2081); and the spring (2083) adjusts the clamping angle of the first clamping plate (2082).

7. A low noise ball bearing according to claim 1, characterized in that: The bearing structure (1) comprises an outer ring (101) arranged on the top of a support frame (201), the outer surface of the outer ring (101) is provided with a groove (102), the inner wall of the outer ring (101) is provided with a first sliding groove (103), the inner wall of the first sliding groove (103) is fixedly connected with a lubrication block (104), an inner ring (109) is arranged inside the outer ring (101), the outer surface of the inner ring (109) is provided with a second sliding groove (110), and the first sliding groove (103) and the second sliding groove (110) are elliptical openings with the same curvature.

8. A low noise ball bearing according to claim 7, characterized in that: A retaining body (105) is arranged on the outside of the side of the outer ring (101) close to the inner ring (109), a through hole (106) is opened on the outer surface of the retaining body (105), a first ball (107) is rollingly connected to the inner wall of the retaining body (105), and a second ball (108) is rollingly connected to the inner wall of the retaining body (105) away from the first ball (107), the diameter of the first ball (107) is larger than that of the second ball (108), the diameter of the first ball (107) decreases towards the second ball (108), and the diameter of the second ball (108) increases towards the first ball (107).

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