Bearing noise detection equipment

Abstract

The invention discloses bearing noise detection equipment, and relates to the technical field of bearing production, the bearing noise detection equipment comprises a main body base, the upper end of the main body base is fixedly provided with a detection bin, the detection bin is internally provided with a detection unit for detecting a bearing, the surface of the detection bin is provided with a protection door, and the upper end of the main body base is provided with a conveying belt; a feeding guide rail is fixed to the conveying belt, a material moving unit used for moving bearings is installed at the upper end of the main body base, a feeding channel is formed in the side face of the detection bin, and a feeding unit used for feeding the bearings into the detection bin is installed at the position, corresponding to the feeding channel, in the detection bin. And an oil stain removing structure for cleaning the surface of the conveying belt is arranged between the main body base and the conveying belt. And through the oil stain removing structure, the conveying belt can be wiped, oil stains attached to the conveying belt can be wiped off, and the problem that the oil stains are attached to the surface of the bearing after being accumulated for a long time, and the bearing detection precision is affected is solved.

Description

Technical Field

[0001] This application relates to the field of bearing manufacturing technology, and in particular to bearing noise detection equipment. Background Technology

[0002] As a core component of mechanical equipment, bearings undergo a complex manufacturing process involving numerous precision steps, from raw material selection, forging, turning, heat treatment to grinding. Each step plays a crucial role in the final quality of the bearing. After these processing steps, to ensure the bearing's lubrication performance during operation, a bearing grease filling production line is used to add an appropriate amount of specialized lubricating grease to the bearing. However, potential problems during production, such as raceway surface scratches, insufficient rolling element precision, and assembly deviations, are often difficult to identify visually but will manifest as noise during bearing operation. Therefore, to ensure the quality stability and reliability of bearings leaving the factory, after the grease filling process, each batch of bearings undergoes rigorous noise testing using specialized bearing noise testing equipment. The test results determine whether the bearings have quality defects and screen out unqualified products.

[0003] Bearing noise testing equipment is a precision instrument specifically designed to detect the operating noise of bearings. Its core testing component is the probe. These probes typically employ highly sensitive acoustic or vibration sensors, capable of accurately capturing the minute noise and vibration signals generated by the bearing under simulated operating conditions. The signal processing system amplifies, filters, and analyzes these electrical signals, converting them into quantifiable noise values ​​or frequency spectra. Operators can then judge the noise level of the bearing based on preset noise standard thresholds, distinguishing between qualified, questionable, and unqualified bearings.

[0004] During the grease filling and capping process, a small amount of lubricating grease inevitably overflows onto the bearing surface, often leaving an oily residue. When these bearings with oily residue are transported on the conveyor belt of the noise detection equipment, the oil residue gradually adheres to the conveyor belt as it runs. As the testing continues, the oil residue accumulates on the conveyor belt, eventually forming a layer of grease. When subsequent bearings are transported on the conveyor belt, this grease easily adheres to their surfaces. This grease, once present at the bearing detection area, interferes with the probe's ability to capture bearing noise signals. Firstly, the grease may hinder effective contact between the probe and the bearing surface, affecting signal transmission efficiency. Secondly, the grease may generate additional frictional noise during bearing operation, which superimposed on the bearing's own noise signal, causing signal distortion in the detection equipment and resulting in inaccurate test results. This ultimately affects the accuracy of the bearing detection equipment. Summary of the Invention

[0005] The purpose of this application is to address the problem mentioned in the background art that oil stains adhering to the bearing surface will adhere to the conveyor belt, and during long-term operation of the equipment, the oil stains accumulated on the conveyor belt will adhere to the bearings that need to be transported and tested later, thereby affecting the testing accuracy of the bearings. This application provides a bearing noise detection device.

[0006] To achieve the above objectives, this application specifically adopts the following technical solution: A bearing noise detection device includes a main base, a detection chamber fixed to the upper end of the main base, a detection unit for detecting bearings inside the detection chamber, a protective door installed on the surface of the detection chamber, a conveyor belt installed on the upper end of the main base, a feeding guide rail fixed on the conveyor belt, a material transfer unit for moving bearings installed on the upper end of the main base, a feeding channel opened on the side of the detection chamber, a feeding unit for feeding bearings into the detection chamber installed at a position corresponding to the feeding channel inside the detection chamber, and an oil stain removal structure for cleaning the surface of the conveyor belt provided between the main base and the conveyor belt.

[0007] By adopting the above technical solution, when using this equipment, located at the discharge end of the bearing grease addition production line, the bearings sent out by the grease addition production line enter the feeding guide rail, then fall sequentially onto the conveyor belt. The conveyor belt transports the bearings to the transfer unit, which, in conjunction with the feeding unit, sends them into the testing chamber. The bearings inside the testing chamber are then inspected by the testing unit. During operation, the oil stain removal structure works simultaneously to wipe and clean the oil stains adhering to the conveyor belt, effectively preventing long-term accumulation of oil stains on the bearings and avoiding the impact on bearing testing accuracy.

[0008] Furthermore, the oil stain removal structure includes a mounting plate fixed to the upper end of the main body base, a mounting shaft rotatably connected to the side of the mounting plate, a wiping cloth wound on the mounting shaft, two symmetrically arranged abutment rollers rotatably connected to the side of the mounting plate, a winding assembly provided on the mounting plate, and a collection assembly provided between the mounting plate and the conveyor belt.

[0009] By adopting the above technical solution, the oil stain removal structure is used to wipe and clean the conveyor belt, ensuring the cleanliness of the conveyor belt, reducing the grease adhering to the conveyor belt, and avoiding the problem of oil stains accumulating and adhering to the bearings of subsequent conveyors, thus affecting the bearing detection accuracy.

[0010] Furthermore, the winding assembly includes a fixing plate fixed to the side of the mounting plate, a drive motor fixed to the side of the fixing plate, a winding roller fixed to the output end of the drive motor, the winding roller passing through the mounting plate and rotatably connected to the mounting plate.

[0011] By adopting the above technical solution, the winding assembly is used to wind up the wiping cloth with oil stains on the conveyor belt and make the wiping cloth move continuously, so as to continuously wipe the conveyor belt and ensure the wiping effect.

[0012] Furthermore, a snap-fit ​​strip is fixed on the take-up roller. The snap-fit ​​strip is an elastic metal strip. The wiping cloth passes through the gap between the contact roller and the conveyor belt and is connected to the take-up roller. The wiping cloth is in contact with the conveyor belt.

[0013] By adopting the above technical solution, one end of the wiping cloth is passed through the gap between the contact roller and the conveyor belt, and then through the snap-fit ​​strip and the take-up roller. The end of the wiping cloth is fixed by the snap-fit ​​strip made of elastic metal material, which makes it easier to take up the wiping cloth in the future.

[0014] Furthermore, the collection assembly includes a collection box fixed to the side of the mounting plate, a sealing side plate fixed to the side of the collection box, multiple air outlets at the bottom of the collection box, a guide pipe fixed to the upper end of the collection box, the end of the guide pipe away from the collection box passing through the mounting plate and fixedly connected to the mounting plate, a collection pipe fixed to the end of the guide pipe away from the collection box, the collection box, the guide pipe, and the collection pipe being interconnected, the collection pipe facing the conveyor belt, and a collection component being provided inside the collection box.

[0015] By adopting the above technical solution, the collection component can collect the debris wiped off the conveyor belt by the wiping cloth. The debris enters the collection pipe, then flows along the guide pipe into the collection box, and finally falls onto the collection net. This effectively reduces the cleaning pressure on the wiping cloth and improves the wiping effect on the conveyor belt. Collecting the debris from the conveyor belt effectively reduces the accumulation of debris on the belt, minimizing the long-term impact on its normal operation and facilitating the conveyor belt's transport of materials to the bearings.

[0016] Furthermore, the collecting component includes a drive shaft rotatably connected inside the collecting box, an impeller fixed on the drive shaft, and one end of the drive shaft penetrating through the collecting box.

[0017] By adopting the above technical solution, the drive shaft rotates and drives the impeller to rotate, thereby accelerating the airflow inside the collection box, generating suction inside the collection box, and thus providing power for collecting debris, allowing the debris to enter the collection box under the action of suction.

[0018] Furthermore, a collection net is fixed inside the collection box, and the collection net is located above the impeller.

[0019] By adopting the above technical solution, the debris entering the collection box will fall onto the collection net, and the debris will be collected in a concentrated manner through the collection net.

[0020] Furthermore, a first pulley is fixed to one end of the take-up roller near the output end of the drive motor, and a second pulley is fixed to one end of the drive shaft extending out of the collection box. The diameter of the first pulley is five times the diameter of the second pulley, and the first pulley and the second pulley are connected by a transmission belt.

[0021] By adopting the above technical solution, when the take-up roller rotates, it will drive the first pulley to rotate. Then, under the transmission action of the drive belt, the second pulley will rotate. The rotation of the second pulley will drive the drive shaft to rotate, thereby playing a transmission role.

[0022] In summary, this application includes at least one of the following beneficial effects; 1. In this application, when using the testing equipment, the wiping cloth roll is installed on the mounting shaft. One end of the wiping cloth roll is removed, passed through the gap between the contact roller and the conveyor belt, and the end of the wiping cloth is secured between the clamping strip and the take-up roller. When the testing equipment is working, the drive starts to slowly rotate the take-up roller. During the rotation of the take-up roller, the wiping cloth is wound up, pulling the wiping cloth and causing it to move slowly. Through the movement of the wiping cloth, the conveyor belt can be wiped clean, removing oil stains adhering to the conveyor belt, thereby ensuring the cleanliness of the conveyor belt and effectively preventing oil stains from accumulating for a long time and adhering to the surface of subsequent bearings, thus affecting the accuracy of bearing testing.

[0023] 2. In this application, since the wiping cloth is always in a rolled-up state, the wiping cloth is always in a moving state, and the moving direction of the wiping cloth is opposite to the rotation direction of the conveyor belt, thereby improving the wiping effect on the conveyor belt.

[0024] 3. In this application, during the winding process of the take-up roller winding up the wiping cloth, the first pulley, the transmission belt, and the second pulley cause the drive shaft to drive the impeller to rotate, thereby accelerating the airflow inside the collection box and generating suction inside the collection box. Then, under the action of the guide pipe, a negative pressure is generated at the position of the collection pipe. Through the negative pressure at the collection pipe, the debris wiped off by the wiping cloth on the conveyor belt can be collected, allowing the debris to enter the inside of the collection pipe, then enter the collection box along the guide pipe, and finally fall onto the collection net. This can effectively reduce the cleaning pressure of the wiping cloth and improve the wiping effect of the wiping cloth on the conveyor belt.

[0025] 4. This application, by collecting debris on the conveyor belt, can effectively reduce the accumulation of debris wiped off by the wiping cloth on the conveyor belt, thus reducing the long-term impact of the accumulation on the normal operation of the conveyor belt and making it more conducive to the conveyor belt transporting the bearing. Attached Figure Description

[0026] Figure 1 This is a first three-dimensional structural schematic diagram of the testing equipment in this application; Figure 2 This is a second three-dimensional structural diagram of the testing equipment in this application. Figure 3 This is a three-dimensional structural diagram of the cleaning structure in this application; Figure 4 This is a schematic diagram of the internal structure of the collection box in this application; Figure 5 This is a schematic diagram of the transmission between the take-up roller and the drive shaft in this application.

[0027] Explanation of reference numerals in the attached figures: 1. Main base; 11. Inspection chamber; 12. Protective door; 13. Conveyor belt; 14. Feeding guide rail; 15. Transfer unit; 16. Feeding channel; 17. Feeding unit; 2. Oil stain removal structure; 21. Mounting plate; 22. Mounting shaft; 23. Wiping cloth; 24. Contact roller; 25. Fixing plate; 251. Drive motor; 252. Take-up roller; 253. Connecting strip; 3. Collection box; 31. Sealing side plate; 32. Air outlet; 33. Guide pipe; 34. Collection pipe; 35. Drive shaft; 351. Impeller; 352. Collection net; 36. First pulley; 361. Second pulley; 362. Transmission belt. Detailed Implementation

[0028] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0029] This application discloses a bearing noise detection device.

[0030] Reference Figure 1 and Figure 2 The bearing noise detection equipment includes a main base 1, a detection chamber 11 fixed on the upper end of the main base 1, a detection unit for detecting bearings inside the detection chamber 11, a protective door 12 installed on the surface of the detection chamber 11, a conveyor belt 13 installed on the upper end of the main base 1, a feeding guide rail 14 fixed on the conveyor belt 13, a material transfer unit 15 for moving bearings installed on the upper end of the main base 1, a feeding channel 16 opened on the side of the detection chamber 11, a feeding unit 17 for feeding bearings into the detection chamber 11 installed at a position corresponding to the feeding channel 16 inside the detection chamber 11, and an oil stain removal structure 2 for cleaning the surface of the conveyor belt 13 is provided between the main base 1 and the conveyor belt 13.

[0031] When using this equipment, it is located at the discharge end of the bearing grease addition production line. Bearings, after being greased by the production line, gradually enter the feeding guide 14. As bearings continue to enter, they fall sequentially onto the conveyor belt 13 via the feeding guide 14. The conveyor belt 13 then transports the bearings to the transfer unit 15, which then sends them to the side of the inspection chamber 11. The feeding unit 17, in conjunction with the feeding unit, sends the bearings through the feeding channel 16 into the inspection chamber 11. The bearings inside the inspection chamber 11 are then inspected by the inspection unit to check if the noise level during bearing rotation meets specifications. During operation, the oil stain removal structure 2 works simultaneously to wipe and clean the oil stains adhering to the conveyor belt 13, ensuring its cleanliness and facilitating continuous bearing transport.

[0032] Reference Figures 3-5 The oil stain removal structure 2 includes a mounting plate 21 fixed to the upper end of the main body base 1. A mounting shaft 22 is rotatably connected to the side of the mounting plate 21. A wiping cloth 23 is wound on the mounting shaft 22. Two symmetrically arranged abutment rollers 24 are rotatably connected to the side of the mounting plate 21. A winding assembly is provided on the mounting plate 21. A collection assembly is provided between the mounting plate 21 and the conveyor belt 13.

[0033] The winding assembly includes a fixing plate 25 fixed to the side of the mounting plate 21. A drive motor 251 is fixed to the side of the fixing plate 25. A winding roller 252 is fixed to the output end of the drive motor 251. The winding roller 252 passes through the mounting plate 21 and is rotatably connected to the mounting plate 21.

[0034] In addition, a snap-fit ​​strip 253 is fixed on the take-up roller 252. The snap-fit ​​strip 253 is an elastic metal strip. The wiping cloth 23 passes through the gap between the contact roller 24 and the conveyor belt 13 and is connected to the take-up roller 252. The wiping cloth 23 is in contact with the conveyor belt 13.

[0035] When using this testing equipment, the wiping cloth 23 roll is installed on the mounting shaft 22. One end of the wiping cloth 23 roll is removed and passed through the gap between the contact roller 24 and the conveyor belt 13, allowing the wiping cloth 23 to contact the surface of the conveyor belt 13. The end of the wiping cloth 23 is then secured between the retaining strip 253 and the take-up roller 252, using the elastic metal retaining strip 253 to fix one end of the wiping cloth 23. When the testing equipment is working, the drive motor 251 starts working, driving the take-up roller 252 to rotate slowly. During the rotation of the take-up roller 252, the wiping cloth 23 is wound up, pulling the wiping cloth 23 and causing it to move slowly. Through the movement of the wiping cloth 23, the conveyor belt 13 can be wiped clean, removing oil stains adhering to the conveyor belt 13, thus ensuring the cleanliness of the conveyor belt 13 and effectively preventing oil stains from accumulating for a long time and adhering to the surface of subsequent bearings, thereby affecting the accuracy of bearing testing. Since the wiping cloth 23 is always in a rolled-up state, it is always in a moving state, and the moving direction of the wiping cloth 23 is opposite to the rotation direction of the conveyor belt 13, thereby improving the wiping effect on the conveyor belt 13.

[0036] Reference Figures 3-5 The collection assembly includes a collection box 3 fixed to the side of the mounting plate 21. A sealing side plate 31 is fixed to the side of the collection box 3. The sealing side plate 31 is connected to the collection box 3 by bolts. During long-term use, the debris on the collection net 352 increases. When the suction at the collection pipe 34 is not sufficient to collect the debris, the bolts can be unscrewed, the sealing side plate 31 can be opened, and the collection net 352 can be cleaned. The bottom of the collection box 3 has multiple air outlets 32. A guide pipe 33 is fixed to the upper end of the collection box 3. The end of the guide pipe 33 away from the collection box 3 passes through the mounting plate 21 and is fixedly connected to the mounting plate 21. The end of the guide pipe 33 away from the collection box 3 is fixed to a collection pipe 34. The collection box 3, the guide pipe 33, and the collection pipe 34 are interconnected. The collection pipe 34 faces the position of the conveyor belt 13. The collection box 3 is equipped with a collection component.

[0037] The collecting component includes a drive shaft 35 rotatably connected inside the collecting box 3, an impeller 351 fixed on the drive shaft 35, and one end of the drive shaft 35 passes through the collecting box 3.

[0038] In addition, a collection net 352 is fixed inside the collection box 3. The collection net 352 is located above the impeller 351. The collection net 352 is used to collect the debris that enters the collection box 3, so as to facilitate subsequent unified treatment.

[0039] Furthermore, a first pulley 36 is fixed to one end of the take-up roller 252 near the output end of the drive motor 251, and a second pulley 361 is fixed to one end of the drive shaft 35 extending out of the collection box 3. The diameter of the first pulley 36 is five times the diameter of the second pulley 361, so that the rotational speed of the second pulley 361 is much higher than that of the first pulley 36. While allowing the take-up roller 252 to rotate slowly, the drive motor 251 can still ensure the rotational speed of the drive shaft 35, so that the drive shaft 35 drives the impeller 351 to generate sufficient negative pressure to collect the debris on the conveyor belt 13. The first pulley 36 and the second pulley 361 are connected by a transmission belt 362.

[0040] During the process of the take-up roller 252 rotating to take up the wiping cloth 23, the take-up roller 252 drives the first pulley 36 to rotate. Then, under the transmission action of the drive belt 362, the second pulley 361 rotates. The rotation of the second pulley 361 drives the drive shaft 35 to rotate. When the drive shaft 35 rotates, it drives the impeller 351 to rotate, thereby accelerating the airflow inside the collection box 3 and generating suction inside the collection box 3. Then, under the action of the guide pipe 33, a negative pressure is generated at the position of the collection pipe 34. Through the negative pressure at the collection pipe 34, the debris wiped off by the wiping cloth 23 on the conveyor belt 13 can be collected, so that the debris enters the collection pipe 34 and then enters the collection box 3 along the guide pipe 33, and finally falls onto the collection net 352. This can effectively reduce the cleaning pressure of the wiping cloth 23 and improve the wiping effect of the wiping cloth 23. Furthermore, it can effectively reduce the accumulation of debris wiped off by the wiping cloth 23 on the conveyor belt 13, thus reducing the impact of long-term accumulation on the normal operation of the conveyor belt 13 and making it more conducive to the conveyor belt 13 transporting the bearing.

[0041] Working principle: When using this testing equipment, the wiping cloth 23 roll is installed on the mounting shaft 22. One end of the wiping cloth 23 roll is removed and passed through the gap between the contact roller 24 and the conveyor belt 13, so that the wiping cloth 23 can contact the surface of the conveyor belt 13. The end of the wiping cloth 23 is then clamped between the clamping strip 253 and the take-up roller 252. The clamping strip 253, made of elastic metal material, is used to fix one end of the wiping cloth 23. When using this equipment, it is located at the discharge end of the bearing grease addition production line. After the bearing grease is added through the bearing grease addition production line, the bearing will gradually enter the feeding guide 14 and then fall onto the conveyor belt 13 in sequence. The conveyor belt 13 will then transport the bearing to the position of the transfer unit 15. The transfer unit 15 will then send the bearing to the side of the inspection chamber 11 and, together with the feeding unit 17, send the bearing into the inspection chamber 11. The bearing that enters the inspection chamber 11 will be inspected by the inspection unit to check whether the noise during the bearing rotation process meets the specifications. When the testing equipment is working, the drive motor 251 starts working, driving the take-up roller 252 to rotate slowly. During the rotation of the take-up roller 252, the wiping cloth 23 is wound up, pulling the wiping cloth 23 and causing it to move slowly. Through the movement of the wiping cloth 23, the conveyor belt 13 can be wiped, removing the oil stains adhering to the conveyor belt 13, thereby ensuring the cleanliness of the conveyor belt 13 and effectively preventing the problem of oil stains accumulating for a long time and adhering to the surface of subsequent bearings, thus affecting the bearing testing accuracy. Because the wiping cloth 23 is always in a wound state, it is always in a moving state, and the direction of movement of the wiping cloth 23 is opposite to the rotation direction of the conveyor belt 13, thereby improving the wiping effect on the conveyor belt 13. During the process of the take-up roller 252 rotating to take up the wiping cloth 23, the take-up roller 252 drives the first pulley 36 to rotate. Then, under the transmission action of the drive belt 362, the second pulley 361 rotates. The rotation of the second pulley 361 drives the drive shaft 35 to rotate. When the drive shaft 35 rotates, it drives the impeller 351 to rotate, thereby accelerating the airflow inside the collection box 3 and generating suction inside the collection box 3. Then, under the action of the guide pipe 33, a negative pressure is generated at the position of the collection pipe 34. Through the negative pressure at the collection pipe 34, the debris wiped off by the wiping cloth 23 on the conveyor belt 13 can be collected, so that the debris enters the collection pipe 34 and then enters the collection box 3 along the guide pipe 33, and finally falls onto the collection net 352. This can effectively reduce the cleaning pressure of the wiping cloth 23 and improve the wiping effect of the wiping cloth 23. It can also effectively reduce the accumulation of debris wiped off by the wiping cloth 23 on the conveyor belt 13, and reduce the long-term impact of the accumulation on the normal operation of the conveyor belt 13, which is more conducive to the conveyor belt 13 conveying the bearing. During long-term use, the number of debris components on the collection net 352 increases. When the suction at the collection pipe 34 is insufficient to collect the debris, the bolts can be unscrewed, the sealing side plate 31 can be opened, and the collection net 352 can be cleaned.

Claims

1. A bearing noise detection device, comprising a main body base (1), characterized in that: The main base (1) is fixed with a testing chamber (11) at its upper end. The testing chamber (11) is equipped with a testing unit for testing the bearing. A protective door (12) is installed on the surface of the testing chamber (11). A conveyor belt (13) is installed at the upper end of the main base (1). A feeding guide rail (14) is fixed on the conveyor belt (13). A material transfer unit (15) for moving the bearing is installed at the upper end of the main base (1). A feeding channel (16) is opened on the side of the testing chamber (11). A feeding device for feeding into the testing chamber (11) is installed at a position corresponding to the feeding channel (16) inside the testing chamber (11). The bearing feeding unit (17) is provided with an oil stain removal structure (2) for cleaning the surface of the conveyor belt (13) between the main body base (1) and the conveyor belt (13). The oil stain removal structure (2) includes a mounting plate (21) fixed to the upper end of the main body base (1). The mounting plate (21) is rotatably connected to a mounting shaft (22). A wiping cloth (23) is wound on the mounting shaft (22). The mounting plate (21) is rotatably connected to two symmetrically arranged abutment rollers (24). A winding assembly is provided on the mounting plate (21). A collection assembly is provided between the mounting plate (21) and the conveyor belt (13).

2. The bearing noise detection device according to claim 1, characterized in that: The winding assembly includes a fixing plate (25) fixed to the side of the mounting plate (21), a drive motor (251) fixed to the side of the fixing plate (25), a winding roller (252) fixed to the output end of the drive motor (251), the winding roller (252) passing through the mounting plate (21) and rotatably connected to the mounting plate (21).

3. The bearing noise detection device according to claim 2, characterized in that: A snap-fit ​​strip (253) is fixed on the take-up roller (252). The snap-fit ​​strip (253) is an elastic metal strip. The wiping cloth (23) passes through the gap between the contact roller (24) and the conveyor belt (13) and is connected to the take-up roller (252). The wiping cloth (23) is in contact with the conveyor belt (13).

4. The bearing noise detection device according to claim 2, characterized in that: The collection assembly includes a collection box (3) fixed to the side of the mounting plate (21). A sealing side plate (31) is fixed to the side of the collection box (3). Multiple air outlets (32) are opened at the bottom of the collection box (3). A guide pipe (33) is fixed to the upper end of the collection box (3). The end of the guide pipe (33) away from the collection box (3) passes through the mounting plate (21) and is fixedly connected to the mounting plate (21). A collection pipe (34) is fixed to the end of the guide pipe (33) away from the collection box (3). The collection box (3), the guide pipe (33), and the collection pipe (34) are interconnected. The collection pipe (34) faces the position of the conveyor belt (13). A collection component is provided inside the collection box (3).

5. The bearing noise detection device according to claim 4, characterized in that: The collecting component includes a drive shaft (35) rotatably connected inside the collecting box (3), an impeller (351) is fixed on the drive shaft (35), and one end of the drive shaft (35) passes through the collecting box (3).

6. The bearing noise detection device according to claim 5, characterized in that: The collection box (3) has a collection net (352) fixed inside, and the collection net (352) is located above the impeller (351).

7. The bearing noise detection device according to claim 5, characterized in that: The take-up roller (252) is fixed with a first pulley (36) at one end near the output end of the drive motor (251), and the drive shaft (35) is fixed with a second pulley (361) at one end extending out of the collection box (3). The diameter of the first pulley (36) is five times the diameter of the second pulley (361), and the first pulley (36) and the second pulley (361) are connected by a transmission belt (362).

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