Low noise ball bearing

Abstract

The application 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 emitter, the outer wall of one side of the supporting frame close to the laser emitter is fixedly connected with a light source, the inner wall of one side of the supporting frame far from the laser emitter is fixedly connected with a first hydraulic rod, the output end of the first hydraulic rod is fixedly connected with a first sliding frame, the outer wall of one side of the first sliding frame far from the first hydraulic rod is fixedly connected with a first connecting frame, the inner wall of the first connecting frame is fixedly connected with a second hydraulic rod, during bearing installation, the outer ring and the inner ring are positioned through the supporting mechanism and an adjusting mechanism, thereby improving the stability of the bearing after installation, the gap of the bearing is irradiated through the light source, the gap of the bearing after installation is analyzed through an optical sensor, thereby reducing the wear of the bearing and prolonging the service life.

Description

Technical Field

[0001] This invention relates to the field of bearing technology, specifically to a low-noise ball bearing. Background Technology

[0002] Ball bearings are precision components widely used in mechanical equipment. They are mainly used to reduce friction between rotating parts and support radial and axial loads. They consist of an inner ring, an outer ring, balls, and a cage. Through the rolling motion of the balls between the inner and outer rings, they achieve efficient energy transfer and low-friction operation. Ball bearings have advantages such as high load-bearing capacity, long service life, and high speed, and are widely used in the automotive, aerospace, and industrial machinery industries.

[0003] Patent application 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 annular side of the cage body. Pressure rings are slidably installed on both the upper and lower sides of the cage body. Two or more cylindrical blocks are evenly fixedly installed on the end of the pressure ring near the cage body, and one end of the cylindrical block extends into the interior of the cage body and is fixedly installed with a slider. The slider is slidably installed inside the cage body, and a ball is rolled on one end of the slider.

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

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

[0006] To address the shortcomings of existing technologies, this invention provides a low-noise ball bearing to solve the problems mentioned in the background section.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a low-noise ball bearing, comprising a bearing structure and a support mechanism, wherein the support mechanism includes a support frame, a laser emitter fixedly connected to the outer surface of the support frame, a light source fixedly connected to the outer wall of the support frame near the laser emitter, a first hydraulic rod fixedly connected to the inner wall of the support frame away from the laser emitter, a first sliding frame fixedly connected to the output end of the first hydraulic rod, a first connecting frame fixedly connected to the outer wall of the first sliding frame away from the first hydraulic rod, a second hydraulic rod fixedly connected to the inner wall of the first connecting frame, a clamping assembly provided at the output end of the second hydraulic rod, a support rod fixedly connected to the outer wall of the support frame, a first push rod fixedly connected to the inner wall of the support rod away from the support frame, a bearing mechanism provided at the top of the support frame, and further comprising:

[0008] The adjustment mechanism includes a second sliding frame fixedly connected to the output end of a first push rod. A third sliding groove is formed on the outer surface of the second sliding frame. An optical sensor is fixedly connected to the bottom outer wall of the second sliding frame. A second push rod is fixedly connected to the top outer surface of the second sliding frame. A sliding block is fixedly connected to the output end of the second push rod. A laser receiver is fixedly connected to the outer wall of the second sliding frame near the optical sensor. A first auxiliary rod is rotatably connected to the inner wall of the sliding block via a rotating shaft. An auxiliary component is provided at the end of the first auxiliary rod away from the sliding block. The first push rod is used to adjust the distance between the second sliding frame and the support frame.

[0009] According to the above technical solution, the auxiliary component 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. The bottom of the third sliding frame is rotatably connected to the third auxiliary rod via a rotating shaft. The third sliding groove limits the sliding distance of the third sliding frame.

[0010] According to the above technical solution, a second clamping plate is provided at the bottom of the third sliding frame. The inner wall of the second clamping plate is rotatably connected to the third auxiliary rod through a rotating shaft. A fixed shaft is fixedly connected to the outer wall of the second clamping plate near the third sliding frame. A second connecting frame is fixedly connected to the end of the fixed shaft away from the second clamping plate. The second clamping plate is elastic and deforms when squeezed.

[0011] According to the above technical solution, the inner wall of the second connecting frame is rotatably connected to a second auxiliary rod via a rotating shaft. The end of the second auxiliary rod away from the second connecting frame is rotatably connected to a third auxiliary rod. The second connecting frame causes the third auxiliary rod to deflect at an angle through the second auxiliary rod.

[0012] According to the above technical solution, the clamping assembly includes a fixed frame fixedly connected to the output end of the second hydraulic rod. The bottom outer wall of the fixed frame is rotatably connected to a motor via a rotating shaft. The output end of the motor is fixedly connected to a drive roller. The inner wall of the fixed frame is rotatably connected to a second rotating rod via a rotating shaft. The end of the second rotating rod away from the fixed frame is rotatably connected to a first rotating rod via a rotating shaft. The end of the first rotating rod away from the second rotating rod is rotatably connected to a first connecting frame via a rotating shaft. The fixed frame deflects the first rotating rod by pulling it with the second rotating rod.

[0013] According to the above technical solution, the end of the first rotating rod away from the first connecting frame is rotatably connected to the first clamping plate via a rotating shaft. A spring is fixedly connected to the outer wall of the first clamping plate near the first rotating rod. The 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.

[0014] According to the above technical solution, the bearing structure includes an outer ring disposed 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 disposed inside the outer ring, a second sliding groove is formed on the outer surface of the inner ring, and the first sliding groove and the second sliding groove are elliptical openings with the same curvature.

[0015] According to the above technical solution, a retainer is provided on the outer side of the outer ring near the inner ring. A through hole is opened on the outer surface of the retainer. A first ball is tumblingly connected to the inner wall of the retainer. A second ball is tumblingly connected to the inner wall of the retainer 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 towards the second ball, and the diameter of the second ball increases towards the first ball.

[0016] Compared with the prior art, the present invention provides a low-noise ball bearing, which has the following beneficial effects:

[0017] 1. This invention provides a low-noise ball bearing. During bearing installation, a support mechanism and an adjustment mechanism are used to position the outer and inner rings, thereby improving the stability of the bearing after installation. A light source illuminates the bearing gap, and an optical sensor analyzes the gap after installation, thereby reducing bearing wear and increasing its service life.

[0018] 2. By setting the bearing structure, the large-diameter ball near the first ball is mainly responsible for bearing the main load, while the small ball near the second ball is used to fill the gap. In this way, the load-bearing capacity can be maintained while the speed limit can be improved. By using non-circular first and second sliding grooves, the load can be distributed to more first balls, thereby reducing local wear and extending service life.

[0019] 3. By setting up a support mechanism and an adjustment mechanism, when installing a low-noise bearing, the present invention first adjusts the distance between the clamping components by using the first hydraulic rod, fixes the outer ring by using the clamping components, and fixes the inner ring by using the auxiliary components. The distance between the second sliding frame and the clamping components is adjusted by the first push rod, pushing the inner ring into the outer ring. The first hydraulic rod causes the central axis of the outer ring and the inner ring to be offset, so that the first ball and the second ball can enter between the outer ring and the inner ring in the correct arrangement. The central axis of the outer ring and the inner ring are kept aligned after installation by using a laser emitter and a laser receiver.

[0020] 4. By setting an adjustment mechanism, the second push rod drives the sliding block to move, which in turn drives the first auxiliary rod to apply a pushing force to the third sliding frame. The force is then transmitted from the second sliding frame to the second clamping plate, causing it to contract inward and form radial pressure, thereby achieving adaptive clamping and fixing of inner ring walls of different specifications. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall front structure of the present invention;

[0022] Figure 2 This is an exploded view of the bearing structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the support mechanism and adjustment mechanism of the present invention;

[0024] Figure 4 This is a schematic diagram of the support mechanism structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the clamping component structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the adjustment mechanism structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the auxiliary component structure of the present invention;

[0028] Figure 8 For the present invention Figure 1 A magnified structural diagram of A in the middle.

[0029] In the diagram: 1. Bearing structure; 101. Outer ring; 102. Groove; 103. First sliding groove; 104. Lubricating block; 105. Retainer; 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, Drive roller; 209, Support rod; 210, First push rod; 3, Adjustment 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 component; 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

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0031] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0032] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," 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 communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] Example 1: See Figures 1-4The present invention provides a technical solution: a low-noise ball bearing, comprising a bearing structure 1 and a support mechanism 2. The support mechanism 2 includes a support frame 201, a laser emitter 202 fixedly connected to the outer surface of the support frame 201, a light source 203 fixedly connected to the outer wall of the support frame 201 near the laser emitter 202, a first hydraulic rod 204 fixedly connected to the inner wall of the support frame 201 away from the laser emitter 202, a first sliding frame 205 fixedly connected to the output end of the first hydraulic rod 204, a first connecting frame 206 fixedly connected to the outer wall of the first sliding frame 205 away from the first hydraulic rod 204, a second hydraulic rod 207 fixedly connected to the inner wall of the first connecting frame 206, a clamping assembly 208 provided at the output end of the second hydraulic rod 207, a support rod 209 fixedly connected to the outer wall of the support frame 201, a first push rod 210 fixedly connected to the inner wall of the end of the support rod 209 away from the support frame 201, a bearing mechanism provided at the top of the support frame 201, and further comprising:

[0034] The adjustment mechanism 3 includes 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. A sliding block 305 is fixedly connected to the output end of the second push rod 304. 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 via a rotating shaft. An auxiliary component 308 is provided 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. During the installation of the low-noise bearing, the operation... The steps are as follows: First, the spacing between the clamping components 208 is adjusted by the first hydraulic rod 204. The clamping components 208 clamp and fix the outer ring 101. At the same time, the inner ring 109 is clamped and fixed by the auxiliary component 308. The first push rod 210 is manipulated to adjust the distance between the second sliding frame 301 and the clamping components 208. Then, the inner ring 109 is pushed into the outer ring 101 by the first push rod 210. The first hydraulic rod 204 causes the central axis of the outer ring 101 and the inner ring 109 to deviate. This allows the first ball bearing 107 and the second ball bearing 108 to enter between the outer ring 101 and the inner ring 109 in the correct arrangement. The laser emitter 202 and the laser receiver 307 determine whether the central axis of the outer ring 101 and the inner ring 109 is on the same straight line after installation.

[0035] 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. 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 specially processed micron-level oil storage cavity, which is filled with solid lubricant. During bearing operation, the first ball 107 and the second ball 108 continuously rub against the lubricating block 104, generating heat. Once the temperature exceeds 80°C, the phase change material is activated, causing the solid lubricant to transform into a liquid state and be released. This released lubricant effectively reduces the friction between bearing components, ultimately reducing noise. An inner ring 109 is provided 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 elliptical openings with the same curvature. A retainer 105 is provided on the outer side of the outer ring 101 near the inner ring 109. A through hole 106 is formed on the outer surface of the retainer 105. The inner wall of the retainer 105 is rolledly connected to... The first ball 107 is connected to the inner wall of the retainer 105 on the side away from the first ball 107 by a second ball 108. 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. In the low-noise bearing, the larger diameter ball near the first ball 107 mainly bears the main load, while the smaller ball near the second ball 108 is responsible for filling the gap, thereby maintaining the bearing's load-bearing capacity and effectively increasing its upper speed limit. The non-circular first sliding groove 103 and second sliding groove 110 can distribute the load to more of the first ball 107, thereby reducing local wear and extending the bearing's service life.

[0036] Example 2: Please refer to Figure 5Based on Embodiment 1, the present invention provides a technical solution: the clamping assembly 208 includes a fixed frame 2085 fixedly connected to the output end of the second hydraulic rod 207. A motor 2086 is rotatably connected to the bottom outer wall of the fixed frame 2085 via a rotating shaft. A drive roller 2087 is fixedly connected to the output end of the motor 2086. A second rotating rod 2084 is rotatably connected to the inner wall of the fixed frame 2085 via a rotating shaft. A first rotating rod 2081 is rotatably connected to the end of the second rotating rod 2084 away from the fixed frame 2085 via a rotating shaft. The end of the first rotating rod 2081 away from the second rotating rod 2084 is rotatably connected to a first connecting frame 206 via a rotating shaft. The fixed frame 2085 pulls the first rotating rod 2081 to deflect via the second rotating rod 2084. One end of the first clamping plate 2082, 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 the outer wall of the first clamping plate 2082 near the first rotating rod 2081. The 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 drive roller 2087 toward the outer ring 101 with the help of the fixing frame 2085, the fixing frame 2085 will drive the first rotating rod 2081 to rotate toward the outer ring 101 via 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.

[0037] Example 3: Please refer to Figures 6-8 Based on Embodiments 1 and 2, the present invention provides a technical solution: the auxiliary component 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 the third auxiliary rod 3086 via a pivot. 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 connected to the third auxiliary rod 3086 via a pivot. 086 Rotary connection, the second clamping plate 3082 is fixedly connected to the outer wall of the side near the third sliding frame 3081 with a fixed shaft 3083, the fixed shaft 3083 is fixedly connected to the end away from the second clamping plate 3082 with 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.

[0038] The inner wall of the second connecting frame 3084 is rotatably connected to the second auxiliary rod 3085 via a rotating shaft. The end of the second auxiliary rod 3085 away from the second connecting frame 3084 is rotatably connected to the third auxiliary rod 3086. When the side of the second force plate close to the fixed shaft 3083 is squeezed, the second force plate pushes the second connecting frame 3084 through the fixed shaft 3083. The second connecting frame 3084 causes the third auxiliary rod 3086 to deflect at an 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, which is beneficial for the installation of the inner ring 109 and the outer ring 101.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended 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 make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A low-noise ball bearing, comprising a bearing structure (1) and a supporting mechanism (2), the supporting mechanism (2) comprising a support frame (201), an outer surface of the support frame (201) being fixedly connected with a laser emitter (202), an outer wall of a side of the support frame (201) close to the laser emitter (202) being fixedly connected with a light source (203), an inner wall of a side of the support frame (201) away from the laser emitter (202) being fixedly connected with a first hydraulic rod (204), an output end of the first hydraulic rod (204) being fixedly connected with a first sliding frame (205), an outer wall of a side of the first sliding frame (205) away from the first hydraulic rod (204) being fixedly connected with a first connecting frame (206), an inner wall of the first connecting frame (206) being fixedly connected with a second hydraulic rod (207), an output end of the second hydraulic rod (207) being provided with a clamping assembly (208), an outer wall of the support frame (201) being fixedly connected with a support rod (209), an inner wall of an end of the support rod (209) away from the support frame (201) being fixedly connected with a first push rod (210), a top of the support frame (201) being provided with a bearing mechanism, characterized in that, Also includes: Adjusting mechanism (3), including the second sliding frame (301) fixedly connected with 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 with an optical sensor (302), the top outer surface of the second sliding frame (301) is fixedly connected with a second push rod (304), the output end of the second push rod (304) is fixedly connected with a sliding block (305), the outer wall of the side of the second sliding frame (301) close to the optical sensor (302) is fixedly connected with a laser receiver (307), the inner wall of the sliding block (305) is rotatably connected with a first auxiliary rod (306) through a rotating shaft, one end of the first auxiliary rod (306) away from the sliding block (305) is provided with an auxiliary assembly (308), and the first push rod (210) is used for adjusting the distance between the second sliding frame (301) and the support frame (201); The clamping assembly (208) includes a fixed frame (2085) fixedly connected with the output end of the second hydraulic rod (207), the bottom outer wall of the fixed frame (2085) is rotatably connected with a motor (2086) through a rotating shaft, the output end of the motor (2086) is fixedly connected with a drive roller (2087), the inner wall of the fixed frame (2085) is rotatably connected with a second rotating rod (2084) through a rotating shaft, one end of the second rotating rod (2084) away from the fixed frame (2085) is rotatably connected with a first rotating rod (2081) through a rotating shaft, and one end of the first rotating rod (2081) away from the second rotating rod (2084) is rotatably connected with the first connecting frame (206) through a rotating shaft. The fixed frame (2085) pulls the first rotating rod (2081) to deflect through the second rotating rod (2084); One end of the first rotating rod (2081) away from the first connecting frame (206) is rotatably connected with a first clamping plate (2082) through a rotating shaft, the side outer wall of the first clamping plate (2082) close to the first rotating rod (2081) is fixedly connected with a spring (2083), one end of the spring (2083) away from the first clamping plate (2082) is fixedly connected with the first rotating rod (2081), and the spring (2083) adjusts the clamping angle of the first clamping plate (2082); The bearing structure (1) comprises an outer ring (101) arranged at the top of the support frame (201), a groove (102) is formed in the outer surface of the outer ring (101), a first sliding groove (103) is formed in 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), an inner ring (109) is arranged in the inner portion of the outer ring (101), a second sliding groove (110) is formed in the outer surface of the inner ring (109), and the first sliding groove (103) and the second sliding groove (110) are elliptical openings with consistent curvatures. The outer ring (101) is provided with a retaining body (105) on the outer side close to the inner ring (109), the outer surface of the retaining body (105) is provided with a through hole (106), the inner wall of the retaining body (105) is rotatably connected with a first rolling ball (107), the inner wall of the retaining body (105) away from the first rolling ball (107) is rotatably connected with a second rolling ball (108), the diameter of the first rolling ball (107) is larger than that of the second rolling ball (108), the diameter of the first rolling ball (107) decreases towards the second rolling ball (108), and the diameter of the second rolling ball (108) increases towards the first rolling ball (107).

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

3. A low noise ball bearing according to claim 2, characterised in that: The bottom of the third sliding frame (3081) is provided with a second clamping plate (3082), the inner wall of the second clamping plate (3082) is rotatably connected with the third auxiliary rod (3086) through a rotating shaft, the outer wall of the side of the second clamping plate (3082) close to the third sliding frame (3081) is fixedly connected with a fixed shaft (3083), one end of the fixed shaft (3083) away from the second clamping plate (3082) is fixedly connected with a second connecting frame (3084), and the second clamping plate (3082) has elasticity and generates deformation when being pressed.

4. A low noise ball bearing according to claim 3, wherein: The inner wall of the second connecting frame (3084) is rotatably connected with 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 with the third auxiliary rod (3086), and the second connecting frame (3084) makes the third auxiliary rod (3086) angularly deflect through the second auxiliary rod (3085).

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