Middle shaft bowl group surface grinding device capable of reducing noise

Abstract

The invention provides a center shaft bowl set surface grinding device capable of reducing noise, and relates to the technical field of center shaft bowl set grinding, the center shaft bowl set surface grinding device comprises a fixed base, and a fixed supporting plate is installed on one side of the fixed base; an air pump is installed at the top of the sealing cover, a main flow pipe is installed at the output end of the air pump, and the sealing cover is located on the outer side of the positioning cover; the side face of the main flow pipe is connected with a flow dividing pipe. A cleaning pipe is mounted on the side surface, penetrating through the sealing cover, of the shunting pipe; the cleaning pipe is installed on the inner side of the sealing cover, an open groove is formed in the cleaning pipe, and the cleaning pipe is located at the bottom of the acoustic panel. High-pressure air flow is guided to the cleaning pipe through the main flow pipe and the branch flow pipe, metal dust attached to the acoustic panel is cleaned through the high-pressure air flow sprayed out of a groove formed in the cleaning pipe, and the problem that the metal dust is accumulated on the acoustic panel is effectively solved. The problem that the noise reduction effect is seriously weakened due to the fact that metal dust generated in the grinding machining process is diffused along with airflow and attached to the surface of a sound absorption material is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of bottom bracket cup grinding, and particularly relates to a surface grinding device for a bottom bracket cup that reduces noise. Background Art

[0002] The bottom bracket cup generally refers to the headset cup of a bicycle. During the casting or forging process of the bottom bracket cup, defects such as burrs, oxide layers, and scratches on its surface will cause the bearings of the bicycle to run stuck and increase the problem of friction. Therefore, a grinding device is required in the forming stage to remove surface defects, improve surface roughness, and ensure smooth operation of the bearings.

[0003] When the existing grinding device grinds the bottom bracket cup, noise will be generated during the operation of the equipment. To reduce noise pollution, sound-absorbing materials are usually added to suppress the spread of noise. However, the metal dust generated during the grinding process will diffuse with the air flow and adhere to the surface of the sound-absorbing materials, resulting in the blockage of the pore structure of the sound-absorbing materials and severely weakening the noise reduction effect. Summary of the Invention

[0004] The present invention relates to a surface grinding device for a bottom bracket cup that reduces noise, aiming to solve the problem that noise will be generated during the operation of the equipment. To reduce noise pollution, sound-absorbing materials are usually added to suppress the spread of noise. However, the metal dust generated during the grinding process will diffuse with the air flow and adhere to the surface of the sound-absorbing materials, resulting in the blockage of the pore structure of the sound-absorbing materials and severely weakening the noise reduction effect.

[0005] The present invention provides a surface grinding device for a bottom bracket cup that reduces noise, specifically including: a fixed base, on one side of which a fixed support plate is installed; a connecting plate is installed on the side of the fixed support plate, and a positioning cover is installed on the side of the fixed support plate through the connecting plate; a positioning support plate is installed on the top of the fixed support plate; a grinding drive assembly is installed on the positioning support plate; a detachable grinding disc is installed at the bottom of the grinding drive assembly; a guiding groove is provided on the side of the fixed support plate; a driving cylinder is installed at the side end of the positioning support plate, and a traction plate is installed on the output end of the driving cylinder; the traction plate is slidably installed inside the guiding groove, and a sealing cover is installed at the side end of the traction plate; the detachable grinding disc is located inside the sealing cover; a plurality of sound-absorbing plates are installed on the inner side of the sealing cover; the sound-absorbing plates are in a conical structure, and sound-absorbing holes are provided on the inner side of the sound-absorbing plates; an air pump is installed on the top of the sealing cover, a main flow pipe is installed on the output end of the air pump, and the sealing cover is located outside the positioning cover; a shunt pipe is connected to the side of the main flow pipe; the shunt pipe penetrates through the side of the sealing cover and a cleaning pipe is installed; the cleaning pipe is installed on the inner side of the sealing cover, slotted openings are provided on the cleaning pipe, and the cleaning pipe is located at the bottom of the sound-absorbing plate.

[0006] Furthermore, the fixed base is of a circular structure, and a servo motor is installed on the top of the fixed base. A gear is installed on the output end of the servo motor, and a support column is installed at the middle position of the top of the fixed base; the top of the support column is rotatably installed with a rotating plate.

[0007] Furthermore, four evenly distributed positioning members are installed on the rotating plate. Among them, anti-slip grooves are provided on the inner side of the positioning member; a movable support plate is slidably installed on the inner side of the positioning member; four evenly distributed guiding chutes are provided at the inner bottom of the movable support plate; a spring is installed inside the guiding chute, and a guiding sliding plate is slidably installed inside the guiding chute through the spring.

[0008] Furthermore, an air spring is installed on the side of the guiding sliding plate, and a clamping plate is installed on the side of the guiding sliding plate through the air spring. Among them, a rubber pad is installed on the side of the clamping plate; a guiding plate is installed at the bottom of the guiding sliding plate, and the guiding plate is of an inclined structure; four connecting vertical rods are installed at the bottom of the movable support plate.

[0009] Furthermore, the connecting vertical rod is of a cylindrical structure, and a positioning bottom plate is installed at the bottom of the connecting vertical rod; a driving rod is rotatably installed at the middle position of the positioning bottom plate; the bottom of the driving rod penetrates through the bottom of the positioning bottom plate and is installed with a gear, and the gear at the bottom of the driving rod meshes with the gear at the output end of the servo motor on the top of the fixed base. A movable plate is installed on the outer side of the driving rod.

[0010] Furthermore, the movable plate is of a circular structure, and the movable plate is also slidably installed on the outer side of the connecting vertical rod. Four slots are provided on the movable plate, and one side of the top and bottom of the slot is of an arc structure; the slots on the movable plate are slidably installed on the outer side of the guiding plate; a driving cylinder is installed on the top of the fixed base, and a thrust plate is installed on the output end of the driving cylinder; the thrust plate is upwardly installed at the bottom of the gear at the bottom of the driving rod.

[0011] Furthermore, the positioning cover is installed on the top of one positioning member, and the positioning cover is of an annular structure. Multiple slots are provided on the inner side wall of the positioning cover, and a driving motor is installed on the outer side of the positioning cover. A gear is installed on the output end of the driving motor; a jet nozzle and a collection cover which are oppositely distributed are slidably installed inside the positioning cover; driving rings are installed on the outer sides of the jet nozzle and the collection cover.

[0012] Furthermore, the driving ring is of an annular structure, and the outer side of the driving ring meshes with the gear at the output end of the driving motor on the outer side of the positioning cover; a diversion ring is installed at the top of the inner side wall of the positioning cover; a movable ring is connected to the top of the jet nozzle; the movable ring is slidably installed at the inner bottom of the diversion ring.

[0013] Further, a collection ring is installed at the top of the outer sidewall of the positioning cover; a guiding ring is connected to the side surface of the collection cover; the guiding ring is slidably installed inside the collection ring; a refrigeration generating assembly is installed at the bottom of the fixed support plate; a diversion pipe is installed at the output end of the refrigeration generating assembly.

[0014] Further, the side end of the diversion pipe is connected to the side surface of the diversion ring; a collection box is also installed at the bottom of the fixed support plate; a driving pump is installed at the top of the collection box, and a collection pipe is installed at the output end of the driving pump; the side end of the collection pipe is connected to the side surface of the collection ring.

[0015] The present invention provides a surface grinding device for a bottom bracket cup for noise reduction, which has the following beneficial effects: When the present invention is in use, the high-pressure air flow generated by the air pump at the top of the sealing cover is guided to the cleaning pipe through the main flow pipe and the shunt pipe, and the high-pressure air flow ejected from the slotted cleaning pipe is used to clean the metal dust attached to the sound-absorbing board, effectively avoiding the problem of metal dust accumulation on the sound-absorbing board, preventing the problem of blockage of the sound-absorbing board or reduction of the noise reduction effect caused by dust accumulation, reducing the dust coverage rate on the surface of the sound-absorbing board by more than 95%, effectively preventing the attenuation of sound energy caused by pore blockage, prolonging the replacement cycle of the sound-absorbing material, and reducing the workload of manual cleaning.

[0016] In addition, by ensuring the uniform distribution of the cold air flow through the rotating air jet nozzle, avoiding local overheating or overcooling, keeping the temperature of each part of the detachable grinding sheet relatively consistent, reducing the thermal stress caused by temperature difference, improving the accuracy and stability of the detachable grinding sheet, and further improving the grinding quality of the bicycle bottom bracket cup.

[0017] In addition, the collection cover rotates synchronously with the driving ring, driving the guiding ring to rotate inside the collection ring, forming an all-round dust collection range. The cold air flow carries the dust generated by grinding to the position of the collection cover, and the driving pump works to generate a strong suction force on the collection cover, effectively sucking the air flow and dust, and entering the collection box through the collection pipe for treatment, greatly improving the dust collection efficiency and reducing the impact of dust spillage on the working environment and the health of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0019] The drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0020] In the drawings: Figure 1 A schematic diagram showing the overall structure of the present invention is shown; Figure 2Shows a schematic cross-sectional structure diagram of the rotating plate of the present invention; Figure 3 Shows a schematic diagram of the upward movement state of the movable supporting plate of the present invention; Figure 4 Shows a three-dimensional structure diagram of the guiding plate of the present invention; Figure 5 Shows a three-dimensional structure diagram of the positioning cover of the present invention; Figure 6 Shows a schematic cross-sectional structure diagram of the positioning cover of the present invention; Figure 7 Shows a schematic cross-sectional structure diagram of the diversion ring of the present invention; Figure 8 Shows a schematic cross-sectional structure diagram of the sealing cover of the present invention; Figure 9 Shows a schematic cross-sectional structure diagram of the cleaning pipe of the present invention.

[0021] List of reference numerals 1. Fixed base; 101. Support column; 102. Rotating plate; 103. Positioning member; 104. Movable supporting plate; 105. Guiding chute; 106. Guiding sliding plate; 107. Clamping plate; 108. Guiding plate; 109. Connecting vertical rod; 1010. Positioning bottom plate; 1011. Driving rod; 1012. Movable plate; 1013. Thrust plate; 2. Fixed support plate; 201. Positioning cover; 202. Jet nozzle; 203. Collection cover; 204. Driving ring; 205. Diversion ring; 206. Movable ring; 207. Collection ring; 208. Guiding ring; 209. Refrigeration generating assembly; 2010. Diversion pipe; 2011. Collection box; 2012. Collection pipe; 3. Positioning support plate; 301. Grinding driving assembly; 302. Removable grinding sheet; 303. Guiding groove; 304. Traction plate; 305. Sealing cover; 306. Sound-absorbing plate; 307. Main flow pipe; 308. Shunt pipe; 309. Cleaning pipe. Detailed implementation manners

[0022] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments 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 some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1 to 9 : Embodiment 1: The present invention proposes a surface grinding device for a central axis bowl set to reduce noise, including: a fixed base 1, the fixed base 1 is of a circular structure, and a servo motor is installed on the top of the fixed base 1, a gear is installed on the output end of the servo motor, and a support column 101 is installed at the middle position of the top of the fixed base 1; a rotating plate 102 is rotatably installed at the top of the support column 101; four evenly distributed positioning members 103 are installed on the rotating plate 102, wherein, an anti-slip groove is provided inside the positioning member 103; an active support plate 104 is slidably installed inside the positioning member 103; four evenly distributed guiding chutes 105 are provided at the inner bottom of the active support plate 104; a spring is installed inside the guiding chute 105, and a guiding slide plate 106 is slidably installed inside the guiding chute 105 through the spring; an air spring is installed on the side of the guiding slide plate 106, and a clamping plate 107 is installed on the side of the guiding slide plate 106 through the air spring, wherein, a rubber pad is installed on the side of the clamping plate 107; a guiding plate 108 is installed at the bottom of the guiding slide plate 106, and the guiding plate 108 is of an inclined structure; four connecting vertical rods 109 are installed at the bottom of the active support plate 104; the connecting vertical rod 109 is of a cylindrical structure, and a positioning bottom plate 1010 is installed at the bottom of the connecting vertical rod 109; a driving rod 1011 is rotatably installed at the middle position of the positioning bottom plate 1010; the bottom of the driving rod 1011 passes through the bottom of the positioning bottom plate 1010 and a gear is installed, the gear at the bottom of the driving rod 1011 meshes with the gear at the output end of the servo motor on the top of the fixed base 1, and a movable plate 1012 is installed on the outer side of the driving rod 1011; the movable plate 1012 is of a circular structure, and the movable plate 1012 is also slidably installed on the outer side of the connecting vertical rod 109, and four slots are provided on the movable plate 1012, and one side of the top and bottom of the slot is of an arc structure; the slots on the movable plate 1012 are slidably installed on the outer side of the guiding plate 108; a driving cylinder is installed on the top of the fixed base 1, and a thrust plate 1013 is installed on the output end of the driving cylinder; the thrust plate 1013 is upwardly installed at the bottom of the gear at the bottom of the driving rod 1011.

[0024] In the embodiment of the present invention, when grinding the bottom bracket cup set of a bicycle, the cup set to be ground is placed inside the movable support plate 104. The gear at the output end of the servo motor on the top of the fixed base 1 drives the gear at the bottom of the driving rod 1011 to rotate. Then, the driving rod 1011 rotates in the middle of the positioning bottom plate 1010. The driving rod 1011 drives the movable plate 1012 to move upward along the connecting vertical rod 109. The slot on the movable plate 1012 pushes the side of the guiding plate 108 to move. The top of the guiding plate 108 drives the guiding sliding plate 106 to move along the guiding chute 105. The side of the guiding sliding plate 106 drives the clamping plate 107 through the air spring to clamp the cup set. The air spring can ensure the stability of the clamping and will not cause damage to the cup set. At the same time, it reduces the vibration transmission during the grinding process and reduces the noise transmission. When the rotating plate 102 installed on the top of the support column 101 rotates to drive the installed cup set to rotate below the detachable grinding piece 302, the driving cylinder on the top of the fixed base 1 drives the thrust plate 1013 to move upward. The thrust plate 1013 moves to the bottom of the gear at the bottom of the driving rod 1011 and pushes the positioning bottom plate 1010 to drive the movable support plate 104 to move upward and leave the inside of the positioning member 103, so that the surface to be ground of the cup set is exposed for grinding. The four movable support plates 104 rotate for use. During the grinding process, the installation and disassembly of the cup set can be carried out at the same time. The structure is simple and the operation is convenient, greatly improving the processing efficiency of the bottom bracket cup set.

[0025] Embodiment 2. On the basis of Embodiment 1, a fixed support plate 2 is installed on one side of the fixed base 1; a connecting plate is installed on the side of the fixed support plate 2, and a positioning cover 201 is installed on the side of the fixed support plate 2 through the connecting plate; the positioning cover 201 is installed on the top of a positioning member 103, and the positioning cover 201 is of an annular structure. There are multiple slots on the inner side wall of the positioning cover 201. A driving motor is installed on the outside of the positioning cover 201, and a gear is installed on the output end of the driving motor; a jet nozzle 202 and a collection cover 203 are slidably installed inside the positioning cover 201 and are distributed oppositely; driving rings 204 are installed on the outside of the jet nozzle 202 and the collection cover 203; the driving ring 204 is of an annular structure, and the outside of the driving ring 204 meshes with the gear at the output end of the driving motor on the outside of the positioning cover 201; a diversion ring 205 is installed on the top of the inner side wall of the positioning cover 201; the top of the jet nozzle 202 is connected with a movable ring 206; the movable ring 206 is slidably installed at the bottom of the inner side of the diversion ring 205; a collection ring 207 is installed on the top of the outer side wall of the positioning cover 201; a guiding ring 208 is connected to the side of the collection cover 203; the guiding ring 208 is slidably installed inside the collection ring 207; a refrigeration generating assembly 209 is installed at the bottom of the fixed support plate 2; a diversion pipe 2010 is installed on the output end of the refrigeration generating assembly 209; the side end of the diversion pipe 2010 is connected to the side of the diversion ring 205; a collection box 2011 is also installed at the bottom of the fixed support plate 2; a driving pump is installed on the top of the collection box 2011, and a collection pipe 2012 is installed on the output end of the driving pump;The side end of the collection pipe 2012 is connected to the side surface of the collection ring 207. When grinding the bicycle bottom bracket cup set, the rotating plate 102 drives a positioning member 103 to move below the positioning cover 201. During the grinding process, the refrigeration generating component 209 at the bottom of the fixed support plate 2 and the drive pump on the collection box 2011 work simultaneously. The cold air flow generated by the refrigeration generating component 209 enters the inside of the diversion ring 205 through the diversion pipe 2010, and the cold air flow is ejected through the air jet nozzle 202 connected to the movable ring 206 to cool the place where the detachable grinding disc 302 rotates. And the cold air flow carries the dust generated by grinding to the position of the collection cover 203. When the drive pump works, the collection cover 203 absorbs the air flow, and the air flow carries the dust into the inside of the collection ring 207 through the collection cover 203, and then enters the collection box 2011 through the collection pipe 2012 for processing. At the same time, the drive motor outside the positioning cover 201 drives the drive ring 204 to rotate through the gear, and the drive ring 204 drives the air jet nozzle 202 and the collection cover 203 to rotate synchronously. Then the air jet nozzle 202 drives the movable ring 206 to rotate inside the diversion ring 205, and the collection cover 203 drives the guide ring 208 to rotate inside the collection ring 207, so that the air flow cools the detachable grinding disc 302 in all directions, and the collection cover 203 collects the dust in all directions. At the same time, inclined grooves are provided on both sides of the bottom of the collection cover 203, which can attract the residual dust at the bottom inside the positioning cover 201, reduce the situation of residual dust on the cup set, and reduce the problem of increased noise caused by increased resistance.

[0026] Embodiment 3. On the basis of Embodiment 1, a positioning support plate 3 is installed on the top of the fixed support plate 2; a grinding drive assembly 301 is installed on the positioning support plate 3; a detachable grinding disc 302 is installed at the bottom of the grinding drive assembly 301; a guiding groove 303 is provided on the side of the fixed support plate 2; a driving cylinder is installed at the side end of the positioning support plate 3, and a traction plate 304 is installed on the output end of the driving cylinder; the traction plate 304 is slidably installed inside the guiding groove 303, and a sealing cover 305 is installed at the side end of the traction plate 304; the detachable grinding disc 302 is located inside the sealing cover 305; a plurality of sound-absorbing plates 306 are installed on the inner side of the sealing cover 305; the sound-absorbing plates 306 are of a conical structure, and sound-absorbing holes are provided on the inner side of the sound-absorbing plates 306; an air pump is installed on the top of the sealing cover 305, and a main flow pipe 307 is installed on the output end of the air pump. The sealing cover 305 is located outside the positioning cover 201; a shunt pipe 308 is connected to the side of the main flow pipe 307; a cleaning pipe 309 is installed through the side of the sealing cover 305 by the shunt pipe 308; the cleaning pipe 309 is installed on the inner side of the sealing cover 305, slotted openings are provided on the cleaning pipe 309, and the cleaning pipe 309 is located at the bottom of the sound-absorbing plates 306. When grinding the bicycle bottom bracket bowl set, the grinding drive assembly 301 of the positioning support plate 3 drives the detachable grinding disc 302 to move downward and drives rotation for grinding. At the same time, the driving cylinder at the side end of the positioning support plate 3 drives the traction plate 304 to move vertically downward along the guiding groove 303, so that the traction plate 304 drives the sealing cover 305 and the detachable grinding disc 302 to move downward synchronously, and the sealing cover 305 is installed outside the positioning cover 201. During the process of the detachable grinding disc 302 working, the sound-absorbing plates 306 perform noise reduction processing on the generated noise to reduce the spread of noise. When stopping working, the high-pressure air flow generated by the air pump on the top of the sealing cover 305 enters the inside of the cleaning pipe 309 through the main flow pipe 307 and the shunt pipe 308, and the high-pressure air flow ejected from the slotted openings on the cleaning pipe 309 blows and cleans the metal dust attached to the sound-absorbing plates 306 to ensure the cleanliness of the surface of the sound-absorbing plates 306 and ensure the noise reduction effect of the sound-absorbing plates 306.

[0027] Working principle of this embodiment: Place the bowl set in the movable pallet 104. The servo motor at the top of the fixed base 1 drives a driving rod 1011 to rotate in the middle of the positioning base plate 1010. The driving rod 1011 drives the movable plate 1012 to move upward along the connecting vertical rod 109. The movable plate 1012 pushes the guiding slide plate 106 at the top of the guiding plate 108 to move along the guiding chute 105. The guiding slide plate 106 drives the clamping plate 107 through the air spring to clamp the bowl set. Rotate the rotating plate 102 installed at the top of the supporting column 101 to drive the installed bowl set to rotate under the positioning cover 201. The driving cylinder at the top of the fixed base 1 drives the thrust plate 1013 to push the bottom gear of the driving rod 1011 and the positioning base plate 1010, so that the movable pallet 104 drives the bowl set to move upward away from the positioning member 103. The grinding driving assembly 301 drives the detachable grinding plate 302 to move downward. At the same time, the driving cylinder drives the traction plate 304 to move vertically downward along the guiding groove 303. The traction plate 304 drives the sealing cover 305 and the detachable grinding plate 302 to move downward synchronously. The sealing cover 305 is installed on the outside of the positioning cover 201. The detachable grinding plate 302 grinds the bowl set, and the sound-absorbing plate 306 reduces the generated noise. During the grinding process, the refrigeration generating component 209 and the driving pump on the collection box 2011 work simultaneously. The cold air flow generated by the refrigeration generating component 209 enters the diversion ring 205 through the diversion pipe 2010 and then is ejected through the air jet nozzle 202 to cool the place where the detachable grinding plate 302 rotates. And the cold air flow carries the dust generated by grinding to the collection cover 203. The air flow absorbed by the collection cover 203 carries the dust and enters the collection box 2011 through the collection ring 207 and the collection pipe 2012. At the same time, the driving motor outside the positioning cover 201 drives the driving ring 204 to rotate through the gear. The driving ring 204 drives the air jet nozzle 202 and the collection cover 203 to rotate synchronously to cool the detachable grinding plate 302 and collect dust in all directions. After stopping working, the high-pressure air flow generated by the air pump at the top of the sealing cover 305 enters the cleaning pipe 309 through the main pipe 307 and the branch pipe 308. The high-pressure air flow ejected from the slotted opening on the cleaning pipe 309 blows and cleans the metal dust attached to the sound-absorbing plate 306 to ensure the noise reduction effect of the sound-absorbing plate 306.

[0028] In this article, the following points need attention: 1. The attached drawings of the embodiments of the present invention only relate to the structures involved in the embodiments of the present invention, and other structures can refer to the general design.

[0029] 2. Without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other to obtain new embodiments.

[0030] The above are only the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A surface grinding device for a center shaft headset for reducing noise, characterized in that: include: A fixed base (1), wherein a fixed support plate (2) is installed on one side of the fixed base (1); a connecting plate is installed on the side of the fixed support plate (2), and a positioning cover (201) is installed on the side of the fixed support plate (2) through the connecting plate; a positioning support plate (3) is installed on the top of the fixed support plate (2); a grinding drive assembly (301) is installed on the positioning support plate (3); a detachable grinding sheet (302) is installed on the bottom of the grinding drive assembly (301); a guide groove (303) is provided on the side of the fixed support plate (2); a driving cylinder is installed on the side end of the positioning support plate (3), and a traction plate (304) is installed on the output end of the driving cylinder; the traction plate (304) is slidably installed inside the guide groove (303), and a sealing member is installed on the side end of the traction plate (304). The sealing cover (305) comprises a detachable grinding sheet (302) located inside the sealing cover (305); a plurality of sound absorbing panels (306) are installed on the inner side of the sealing cover (305); sound absorbing holes are provided on the inner side of the sound absorbing panels (306); an air pump is installed on the top of the sealing cover (305); a main flow pipe (307) is installed on the output end of the air pump; the sealing cover (305) is located outside the positioning cover (201); a shunt pipe (308) is connected to the side of the main flow pipe (307); a cleaning pipe (309) is installed on the side of the shunt pipe (308) that passes through the sealing cover (305); the cleaning pipe (309) is installed on the inner side of the sealing cover (305); a slot is provided on the cleaning pipe (309); and the cleaning pipe (309) is located at the bottom of the sound absorbing panel (306).

2. The device for grinding the surface of a center bracket headset for reducing noise according to claim 1, characterized in that: A servo motor is installed on the top of the fixed base (1), a gear is installed on the output end of the servo motor, and a support column (101) is installed in the middle position of the top of the fixed base (1); a rotating plate (102) is rotatably installed on the top of the support column (101).

3. The device for grinding the surface of a center bracket headset with reduced noise according to claim 2, characterized in that: The rotating plate (102) is provided with positioning members (103) evenly distributed at four locations, wherein an anti-slip groove is provided on the inner side of the positioning member (103); a movable support plate (104) is slidably installed on the inner side of the positioning member (103); the inner bottom of the movable support plate (104) is provided with guide grooves (105) evenly distributed at four locations; a spring is installed inside the guide groove (105), and a guide slide plate (106) is slidably installed inside the guide groove (105) via the spring.

4. The device for grinding the surface of a center bracket headset with reduced noise according to claim 3, characterized in that: An air spring is installed on the side of the guide slide (106), and a clamping plate (107) is installed on the side of the guide slide (106) through the air spring, wherein a rubber pad is installed on the side of the clamping plate (107); a guide plate (108) is installed at the bottom of the guide slide (106); and four connecting vertical rods (109) are installed at the bottom of the movable support plate (104).

5. The device for grinding the surface of a center bracket headset with reduced noise according to claim 4, characterized in that: A positioning base plate (1010) is installed at the bottom of the connecting vertical rod (109); a driving rod (1011) is rotatably installed at the middle position of the positioning base plate (1010); a gear is installed at the bottom of the driving rod (1011) that passes through the bottom of the positioning base plate (1010), the gear at the bottom of the driving rod (1011) is meshed with the gear at the output end of the servo motor at the top of the fixed base (1), and a movable plate (1012) is installed on the outer side of the driving rod (1011).

6. The device for grinding the surface of a center bracket headset with reduced noise according to claim 5, characterized in that: The movable plate (1012) is also slidably mounted on the outside of the connecting vertical rod (109), and four slots are provided on the movable plate (1012); the slots on the movable plate (1012) are slidably mounted on the outside of the guide plate (108); a driving cylinder is mounted on the top of the fixed base (1), and a thrust plate (1013) is mounted on the output end of the driving cylinder; the thrust plate (1013) is moved upward and mounted on the bottom of the gear at the bottom of the driving rod (1011).

7. The device for grinding the surface of a center bracket headset with reduced noise according to claim 6, characterized in that: The positioning cover (201) is mounted on the top of a positioning member (103); a plurality of slots are provided on the inner side wall of the positioning cover (201); a driving motor is mounted on the outer side of the positioning cover (201); a gear is mounted on the output end of the driving motor; relatively distributed air nozzles (202) and a collecting cover (203) are slidably mounted inside the positioning cover (201); and driving rings (204) are mounted on the outer sides of the air nozzles (202) and the collecting cover (203).

8. The device for grinding the surface of a center bracket headset with reduced noise according to claim 7, characterized in that: The outer side of the driving ring (204) meshes with the gear at the output end of the driving motor on the outer side of the positioning cover (201); a guide ring (205) is installed on the top of the inner wall of the positioning cover (201); a movable ring (206) is connected to the top of the air jet nozzle (202); and the movable ring (206) is slidably installed on the inner bottom of the guide ring (205).

9. The device for grinding the surface of a center bracket headset with reduced noise according to claim 8, characterized in that: A collecting ring (207) is installed on the top of the outer wall of the positioning cover (201); a guide ring (208) is connected to the side of the collecting cover (203); the guide ring (208) is slidably installed on the inner side of the collecting ring (207); a refrigeration generating assembly (209) is installed on the bottom of the fixed support plate (2); and a guide pipe (2010) is installed on the output end of the refrigeration generating assembly (209).

10. The device for grinding the surface of a center bracket headset with reduced noise according to claim 9, characterized in that: The side end of the guide pipe (210) is connected to the side of the guide ring (205); a collecting box (211) is also installed at the bottom of the fixed support plate (2); a driving pump is installed on the top of the collecting box (211), and a collecting pipe (212) is installed on the output end of the driving pump; and the side end of the collecting pipe (212) is connected to the side of the collecting ring (207).

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