Noise detection device

By designing a windproof cover and drive mechanism on the noise meter, the interference of wind speed on the noise meter's measurement results is solved, achieving accuracy and stability in environmental noise detection, and facilitating the adjustment of the noise meter's position and angle.

CN223985775UActive Publication Date: 2026-03-10SUZHOU PUREFI ENVIRONMENTAL PROTECTION TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-28
Publication Date
2026-03-10

AI Technical Summary

Technical Problem

In existing noise meters, wind speed can interfere with the measurement results and affect the accuracy of environmental noise detection.

Method used

A noise detection device was designed, comprising a noise meter, a mounting base, a windproof cover, and a drive mechanism. The drive mechanism causes the noise meter to slide into the windproof cover, reducing the influence of wind on the measurement results. The accuracy of the detection is improved by adjusting the level and angle of the noise meter.

Benefits of technology

It effectively reduces the impact of wind on the noise meter's measurement results, improves the accuracy and stability of environmental noise detection, and facilitates the adjustment of the noise meter's position and angle.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a noise detection device, which belongs to the technical field of noise detection and comprises a noisemeter for detecting noise, the noisemeter is arranged in a mounting seat, a mounting groove is formed in the side surface of the mounting seat, a mounting strip is arranged in the mounting groove, a sliding seat is arranged on the mounting strip in a sliding manner, and the noisemeter is detachably arranged on the sliding seat. A mounting ring is arranged on the mounting seat, the mounting ring is communicated with the mounting groove, the mounting strip is arranged in the mounting ring, a windproof cover is arranged on the mounting ring, the mounting strip is arranged in the windproof cover, the mounting strip extends out of the windproof cover, and a driving mechanism for driving the sliding seat to slide is arranged on the mounting strip. According to the invention, when the noise meter is used for detecting the environmental noise, the influence of wind on the measurement result can be effectively reduced.
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Description

Technical Field

[0001] This utility model relates to the field of noise detection technology, and in particular to a noise detection device. Background Technology

[0002] In order to comprehensively and accurately assess environmental quality, predict environmental development trends, and provide scientific basis for environmental management, pollution control, and ecological protection, existing environmental monitoring includes many projects, such as atmospheric environmental monitoring, water environmental monitoring, soil environmental monitoring, ecological environment monitoring, environmental noise monitoring, and pollution source monitoring.

[0003] Existing environmental noise detection methods mostly use noise meters. However, in actual use, environmental factors such as wind speed may interfere with the measurement results of noise meters.

[0004] In response to the aforementioned technologies, there is an urgent need to design and develop a noise detection device that can effectively reduce the impact of wind on measurement results when using a sound level meter to detect environmental noise. Utility Model Content

[0005] In order to reduce the impact of wind on the measurement results when using a noise meter to detect environmental noise, this application provides a noise detection device.

[0006] The noise detection device provided in this application adopts the following technical solution:

[0007] A noise detection device includes a noise meter for detecting noise, the noise meter being disposed within a mounting base, a mounting groove being formed on the side of the mounting base, a mounting strip being disposed within the mounting groove, a slide being slidably disposed on the mounting strip, the noise meter being detachably disposed on the slide, a mounting ring being disposed on the mounting base, the mounting ring being connected to the mounting groove, the mounting strip being disposed within the mounting ring, a windproof cover being disposed on the mounting ring, the mounting strip being disposed within the windproof cover and extending out of the windproof cover, and a driving mechanism being disposed on the mounting strip for driving the slide to slide.

[0008] By adopting the above technical solution, a mounting groove is provided on the side of the mounting base, and a mounting strip is provided in the mounting groove. A slide block is slidably mounted on the mounting strip. The noise meter is detachably mounted on the slide block. A mounting ring is provided on the mounting base, and the mounting ring is connected to the mounting groove. The mounting strip is set in the mounting ring, and a windproof cover is provided on the mounting ring. The mounting strip is set inside the windproof cover and extends out of the windproof cover. When using the noise meter to detect environmental noise, if there is wind in the surrounding environment that can affect the measurement results, the slide block is driven to slide by the drive mechanism. The slide block drives the noise meter to slide closer to the windproof cover, so that the noise meter slides into the windproof cover, reducing the impact of wind on the noise measurement results.

[0009] Preferably, the mounting base has an adapter groove on its side, which is connected to the mounting groove. The mounting strip has a sliding groove on its top surface, and the slide block is slidably disposed in the sliding groove. The driving mechanism includes a handle rotatably disposed on the mounting base and a screw fixed on the handle. The screw is rotatably disposed in the sliding groove and passes through the mounting strip. The slide block is threaded onto the screw.

[0010] By adopting the above technical solution, an adapter groove is provided on the side of the mounting base, which is connected to the mounting groove. A sliding groove is provided on the top surface of the mounting strip, and the slide block is slidably disposed in the sliding groove. The handle is rotatably disposed on the mounting base, and the screw is fixed on the handle. The screw is rotatably disposed in the sliding groove and passes through the mounting strip. The slide block is threaded onto the screw. When it is necessary to adjust the horizontal position of the noise meter, the handle is rotated in the forward or reverse direction. The handle drives the screw to rotate in the forward or reverse direction, thereby causing the slide block to slide into or out of the windproof cover, which facilitates the adjustment of the horizontal position of the noise meter.

[0011] Preferably, the slide is provided with a fixing mechanism, which includes a mounting plate on the top surface of the slide, a positioning seat on the mounting plate, a stud bar rotatably disposed on the positioning seat, and an abutment plate that can abut against the noise meter. The stud bar is threaded onto the positioning seat, and the abutment plate is disposed on the stud bar.

[0012] By adopting the above technical solution, the mounting plate is set on the top surface of the slide, the positioning seat is set on the mounting plate, the stud bar is rotatably set on the positioning seat, the stud bar is threaded onto the positioning seat, and the abutment plate is set on the stud bar. When it is necessary to fix the noise meter, the noise meter is placed in the positioning seat, and the stud bar is rotated so that the stud bar drives the abutment plate to abut against the noise meter, which facilitates fixing the noise meter.

[0013] Preferably, the fixing mechanism includes a pad that can abut against the side of the noise meter, the pad being disposed on the bottom surface of the abutment plate.

[0014] By adopting the above technical solution, the pad is set on the bottom surface of the abutment plate, and the pad can abut against the side of the noise meter, thus improving the stability of the abutment between the abutment plate and the noise meter.

[0015] Preferably, a machine platform is provided below the mounting base. A first rotating groove is formed on the top surface of the machine platform, and a first receiving groove is formed on the side wall of the first rotating groove. A second rotating groove is formed on the top surface of the machine platform, and a second receiving groove is formed on the side wall of the second rotating groove. The second receiving groove is connected to the first receiving groove. A rotating mechanism is designed on the machine platform. The rotating mechanism includes a rotating column rotatably disposed in the first rotating groove, a first gear rotatably disposed in the first receiving groove, a transition column rotatably disposed in the second rotating groove, a second gear rotatably disposed in the second receiving groove, and a handle disposed on the top surface of the transition column. The first gear is coaxially arranged with the rotating column and connected to it. The second gear is coaxially arranged with the transition column and connected to it. The second gear meshes with the first gear. The mounting base is disposed on the rotating column.

[0016] By adopting the above technical solution, a rotating groove 1 is provided on the top surface of the machine tool, and a receiving groove 1 is provided on the side wall of the rotating groove 1. A rotating groove 2 is provided on the top surface of the machine tool, and a receiving groove 2 is provided on the side wall of the rotating groove 2. The receiving groove 2 is connected to the receiving groove 1. A rotating column is rotatably set in the rotating groove 1, and a gear 1 is rotatably set in the receiving groove 1. The gear 1 is coaxially set with the rotating column and connected to the rotating column. A transition column is rotatably set in the rotating groove 2. A handle 1 is set on the top surface of the transition column. A gear 2 is rotatably set in the receiving groove 2, and a gear 2 is coaxially set with the transition column and connected to the transition column. Gear 2 and gear 1 mesh with each other. A mounting base is set on the rotating column. When it is necessary to adjust the angle of the noise meter, rotating handle 1 drives the transition column to rotate. Through the connection relationship between the transition column, gear 2, gear 1, rotating column and mounting base, it is convenient to drive the noise meter in the mounting base to rotate, thereby facilitating the adjustment of the noise meter angle.

[0017] Preferably, a through groove is provided on the top surface of the machine platform, and a positioning mechanism is provided on the machine platform. The positioning mechanism includes a second screw threaded in the through groove and a plug rod that can be inserted into the ground. The plug rod is provided on the second screw, and a second handle is provided on the second screw.

[0018] By adopting the above technical solution, a through groove is opened on the top surface of the machine tool, the screw is threaded into the through groove, the insertion rod is set on the screw, and the screw is equipped with a handle. When the noise meter is used to detect noise in the environment at a certain position, the handle is turned to drive the screw to rotate, and the screw drives the insertion rod to rotate, so that the insertion rod is inserted into the ground, which facilitates fixing the machine tool and improves the stability of the process of using the noise meter to detect noise in the environment.

[0019] Preferably, the positioning mechanism includes a limiting plate that can abut against the bottom surface of the machine platform, and the limiting plate is disposed between the screw two and the insertion rod two.

[0020] By adopting the above technical solution, the limiting plate is set between the second screw and the second insertion rod. When it is necessary to move the noise meter, the second handle is rotated in the opposite direction, so that the second screw drives the insertion rod to lift off the ground. The limiting plate restricts the insertion rod from sliding into the through groove, thereby preventing mud and sludge from sliding into the through groove and improving the stability of the rotation of the second screw.

[0021] Preferably, a support column is provided on the bottom surface of the machine platform, and a universal pulley is provided on the support column.

[0022] By adopting the above technical solution, a support column is set on the bottom surface of the machine, and universal pulleys are set on the support column to facilitate the sliding of the machine and thus facilitate the movement of the noise meter.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The mounting base has a mounting groove on its side, and a mounting strip is installed in the mounting groove. A slide block is slidably mounted on the mounting strip. The noise meter is detachably mounted on the slide block. The mounting base has a mounting ring that is connected to the mounting groove. The mounting strip is installed in the mounting ring, and a windproof cover is installed on the mounting ring. The mounting strip is installed inside the windproof cover and extends out of the windproof cover. When using the noise meter to detect ambient noise, if there is wind in the surrounding environment that may affect the measurement results, the slide block is driven by the drive mechanism to slide. The slide block drives the noise meter to slide closer to the windproof cover, so that the noise meter slides into the windproof cover, reducing the impact of wind on the noise measurement results and improving the accuracy of the detection results.

[0025] 2. An adapter groove is provided on the side of the mounting base, which is connected to the mounting groove. A sliding groove is provided on the top surface of the mounting strip. The slide block is slidably set in the sliding groove. The handle is rotatably set on the mounting base. The screw is fixed on the handle and rotatably set in the sliding groove. The screw passes through the mounting strip and is rotatably set in the adapter groove. The slide block is threaded onto the screw. When it is necessary to adjust the horizontal position of the noise meter, the handle is rotated in the forward or reverse direction. The handle drives the screw to rotate in the forward or reverse direction, thereby causing the slide block to slide into or out of the windproof cover, which facilitates the adjustment of the horizontal position of the noise meter and is convenient and quick.

[0026] 3. The mounting plate is set on the top surface of the slide, the positioning seat is set on the mounting plate, the stud bar is rotatably set on the positioning seat, the stud bar is threaded onto the positioning seat, and the abutment plate is set on the stud bar. When it is necessary to fix the noise meter, place the noise meter in the positioning seat, rotate the stud bar so that the stud bar drives the abutment plate to abut against the noise meter, which is convenient for fixing the noise meter. When it is necessary to replace or remove the noise meter, rotate the stud bar in the opposite direction so that the stud bar drives the abutment plate away from the noise meter, which is convenient for replacing or removing the noise meter. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of a noise detection device according to an embodiment of this application.

[0028] Figure 2 This is a cross-sectional view of the machine tool in an embodiment of this application.

[0029] Figure 3 This is a cross-sectional view of the mounting base in an embodiment of this application.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Machine base; 11. Rotating slot one; 12. Receiving slot one; 13. Rotating slot two; 14. Receiving slot two; 16. Support column; 17. Universal pulley; 2. Mounting base; 21. Mounting slot; 22. Mounting strip; 23. Slide seat; 24. Mounting ring; 25. Windproof cover; 26. Adapter slot; 27. Sliding slot; 3. Noise meter; 4. Drive mechanism; 41. Rotating handle; 42. Screw one; 5. Fixing mechanism; 51. Mounting plate; 52. Positioning seat; 53. Screw strip; 54. Abutment plate; 6. Rotating mechanism; 61. Rotating column; 62. Gear one; 63. Adapter column; 64. Gear two; 65. Handle one; 7. Positioning mechanism; 71. Screw two; 72. Insert rod; 73. Limiting plate. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1 -Appendix Figure 3 This application will be described in further detail.

[0033] This application discloses a noise detection device, referring to... Figure 1 As shown, a noise detection device includes a machine base 1, a mounting base 2, a noise meter 3, a drive mechanism 4, a fixing mechanism 5, a rotating mechanism 6, and a positioning mechanism 7. The machine base 1 is horizontally arranged.

[0034] Reference Figure 1 and Figure 2 As shown, a rotating groove 11 is provided on the top surface of the machine base 1, and a receiving groove 12 is provided on the side wall of the rotating groove 11. The axis of the receiving groove 12 coincides with the axis of the rotating groove 11. A rotating groove 2 13 is provided on the top surface of the machine base 1, and a receiving groove 2 14 is provided on the side wall of the rotating groove 2 13. The axis of the receiving groove 2 14 coincides with the axis of the rotating groove 2 13. The receiving groove 2 14 is connected to the receiving groove 12.

[0035] Reference Figure 1 and Figure 2As shown, the rotating mechanism 6 includes a rotating column 61, a first gear 62, a connecting column 63, a second gear 64, and a first handle 65. The rotating column 61 is rotatably disposed in the first rotating groove 11. The length direction of the rotating column 61 is perpendicular to the top surface of the machine base 1, and the axis of the rotating column 61 coincides with the axis of the first rotating groove 11. The first gear 62 is rotatably disposed in the first receiving groove 12. The first gear 62 is coaxially disposed with the rotating column 61 and is connected to the rotating column 61.

[0036] Reference Figure 1 and Figure 2 As shown, the adapter post 63 is rotatably disposed in the rotating groove 13, the handle 65 is disposed on the top surface of the adapter post 63, the length direction of the adapter post 63 is the same as the length direction of the rotating post 61, the axis of the adapter post 63 coincides with the axis of the rotating groove 13, the gear 64 is rotatably disposed in the receiving groove 14, the gear 64 is coaxially disposed with the adapter post 63, the gear 64 is connected to the adapter post 63, the gear 64 meshes with the gear 62, and the mounting base 2 is disposed on the rotating post 61.

[0037] Reference Figure 1 and Figure 3 As shown, the length direction of the mounting base 2 is parallel to the ground. The side of the mounting base 2 is provided with a mounting groove 21. The length direction of the mounting groove 21 is the same as the length direction of the mounting base 2. A mounting strip 22 is provided in the mounting groove 21. The length direction of the mounting strip 22 is the same as the length direction of the mounting base 2. A slide block 23 is slidably provided on the mounting strip 22. The noise meter 3 is provided on the slide block 23.

[0038] Reference Figure 1 , Figure 2 and Figure 3 As shown, when it is necessary to adjust the angle of the noise meter 3, turn the handle 65 to drive the adapter 63 to rotate. Through the connection relationship between the adapter 63, gear 64, gear 62, rotating column 61 and mounting base 2, it is easy to drive the noise meter 3 in the mounting base 2 to rotate, thereby making it easy to adjust the angle of the noise meter 3.

[0039] Reference Figure 1 and Figure 3 As shown, the mounting base 2 is provided with a mounting ring 24, which is connected to the mounting groove 21. The mounting strip 22 is provided inside the mounting ring 24. The mounting ring 24 is provided with a windproof cover 25, and the mounting strip 22 is provided inside the windproof cover 25 and extends out of the windproof cover 25.

[0040] Reference Figure 1 and Figure 3As shown, a transition groove 26 is provided on the side of the mounting base 2, which is connected to the mounting groove 21. A sliding groove 27 is provided on the top surface of the mounting strip 22. The length direction of the sliding groove 27 is the same as the length direction of the mounting strip 22. The slide block 23 is slidably disposed in the sliding groove 27.

[0041] Reference Figure 1 and Figure 3 As shown, the drive mechanism 4 includes a handle 41 and a screw 42. The handle 41 is rotatably mounted on the mounting base 2, and the screw 42 is fixed on the handle 41. The screw 42 is rotatably mounted in the sliding groove 27. The length direction of the screw 42 is the same as the length direction of the sliding groove 27. The screw 42 passes through the mounting strip 22 and is rotatably mounted in the adapter groove 26. The slide block 23 is threaded onto the screw 42.

[0042] Reference Figure 1 and Figure 3 As shown, when it is necessary to adjust the horizontal position of the noise meter 3, the handle 41 is rotated in the forward or reverse direction. The handle 41 drives the screw 42 to rotate in the forward or reverse direction, thereby causing the slide 23 to slide into or out of the windproof cover 25, which facilitates the adjustment of the horizontal position of the noise meter 3.

[0043] Reference Figure 1 and Figure 3 As shown, when using the noise meter 3 to detect environmental noise, if there is wind in the surrounding environment that can affect the measurement results, the slide 23 is driven to slide, and the slide 23 drives the noise meter 3 to slide closer to the windproof cover 25, so that the noise meter 3 slides into the windproof cover 25, reducing the impact of wind on the noise measurement results.

[0044] Reference Figure 1 and Figure 3 As shown, the fixing mechanism 5 includes a mounting plate 51, a positioning seat 52, a stud bar 53, an abutment plate 54, and a pad. The mounting plate 51 is disposed on the top surface of the slide 23, the positioning seat 52 is disposed on the mounting plate 51, the stud bar 53 is rotatably disposed on the positioning seat 52, the stud bar 53 is threaded onto the positioning seat 52, and the abutment plate 54 is disposed on the stud bar 53.

[0045] Reference Figure 1 and Figure 3 As shown, when it is necessary to fix the noise meter 3, the noise meter 3 is placed in the positioning seat 52, and the stud bar 53 is rotated so that the stud bar 53 drives the abutment plate 54 to abut against the noise meter 3, which facilitates fixing the noise meter 3.

[0046] Reference Figure 1 and Figure 3 As shown, the pad is set on the bottom surface of the abutment plate 54, and the pad can abut against the side of the noise meter 3, which improves the stability of the abutment between the abutment plate 54 and the noise meter 3.

[0047] Reference Figure 1 As shown, there are four through slots on the top surface of the machine base 1. The four through slots are located at the four corners of the top surface of the machine base 1. There are four sets of positioning mechanisms 7. The positioning mechanisms 7 correspond one-to-one with the through slots. The positioning mechanism 7 includes a screw 71, a plug rod 72 and a limit plate 73.

[0048] Reference Figure 1 As shown, screw 71 is threaded into the through groove, and insert rod 72 corresponds one-to-one with screw 71. Insert rod 72 is set on screw 71, and screw 71 is equipped with handle 2. When the noise meter 3 is used to detect noise in the environment at a certain position, rotating handle 2 drives screw 71 to rotate, which in turn drives insert rod 72 to rotate, so that insert rod 72 is inserted into the ground, which facilitates fixing the machine base 1 and thus improves the stability of the process of using noise meter 3 to detect noise in the environment.

[0049] Reference Figure 1 As shown, there are four limiting discs 73, each corresponding to one of the screws 71. The limiting discs 73 are positioned between the screws 71 and the insert rods 72. When the noise meter 3 needs to be moved, the handle is rotated in the opposite direction, causing the screws 71 to lift the insert rods 72 off the ground. The limiting discs 73 restrict the insert rods 72 from sliding into the through groove, thereby preventing mud from sliding into the through groove and improving the stability of the rotation of the screws 71.

[0050] Reference Figure 1 As shown, there are four support columns 16 on the bottom surface of the machine platform 1. The four support columns 16 are located at the four corners of the bottom surface of the machine platform 1. The support columns 16 are equipped with universal pulleys 17 to facilitate the sliding of the machine platform 1, thereby facilitating the movement of the noise meter 3.

[0051] The implementation principle of a noise detection device according to an embodiment of this application is as follows:

[0052] When using the noise meter 3 to detect environmental noise, if there is wind in the surrounding environment that may affect the measurement results, the handle 41 can be rotated in the forward or reverse direction. The handle 41 drives the screw 42 to rotate in the forward or reverse direction, thereby causing the slide 23 to slide into or out of the windproof cover 25. This makes it easy to adjust the horizontal position of the noise meter 3. When the slide 23 drives the noise meter 3 to slide closer to the windproof cover 25, the noise meter 3 slides into the windproof cover 25, reducing the influence of wind on the noise measurement results and improving the accuracy of the detection results.

[0053] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A noise detection apparatus comprising a sound level meter (3) for detecting noise, characterized in that: The noise meter (3) is arranged in the mounting seat (2), the mounting groove (21) is arranged on the side of the mounting seat (2), the mounting strip (22) is arranged in the mounting groove (21), the sliding seat (23) is arranged on the mounting strip (22), the noise meter (3) is detachably arranged on the sliding seat (23), the mounting ring (24) is arranged on the mounting seat (2), the mounting ring (24) is communicated with the mounting groove (21), the mounting strip (22) is arranged in the mounting ring (24), the wind shield (25) is arranged on the mounting ring (24), the mounting strip (22) is arranged in the wind shield (25), the mounting strip (22) is arranged on the wind shield (25), the driving mechanism (4) is arranged on the mounting strip (22) for driving the sliding seat (23) to slide.

2. A noise detection device according to claim 1, characterized in that: The adapter groove (26) is arranged on the side of the mounting seat (2), the adapter groove (26) is communicated with the mounting groove (21), the sliding groove (27) is arranged on the top surface of the mounting strip (22), the sliding seat (23) is arranged in the sliding groove (27), the driving mechanism (4) comprises the rotating handle (41) arranged on the mounting seat (2) and the screw rod (42) fixed on the rotating handle (41), the screw rod (42) is arranged in the sliding groove (27), the screw rod (42) is arranged in the adapter groove (26) through the mounting strip (22), and the sliding seat (23) is threadedly sleeved on the screw rod (42).

3. The noise detection apparatus of claim 1, wherein: The fixing mechanism (5) is arranged on the sliding seat (23), the fixing mechanism (5) comprises the mounting plate (51) arranged on the top surface of the sliding seat (23), the positioning seat (52) arranged on the mounting plate (51), the screw column strip (53) rotatably arranged on the positioning seat (52) and the abutting plate (54) abutting the noise meter (3), the screw column strip (53) is threadedly sleeved on the positioning seat (52), and the abutting plate (54) is arranged on the screw column strip (53).

4. A noise detection apparatus according to claim 3, characterised in that: The fixing mechanism (5) comprises the backing plate abutting the side of the noise meter (3), and the backing plate is arranged on the bottom surface of the abutting plate (54).

5. The noise detection apparatus of claim 1, wherein: The lower part of the mounting base (2) is provided with a machine table (1), a rotating groove one (11) is opened in the top surface of the machine table (1), a containing groove one (12) is opened in the side wall of the rotating groove one (11), a rotating groove two (13) is opened in the top surface of the machine table (1), a containing groove two (14) is opened in the side wall of the rotating groove two (13), the containing groove two (14) is communicated with the containing groove one (12), a rotating mechanism (6) is designed on the machine table (1), the rotating mechanism (6) comprises a rotating column (61) which is rotatably arranged in the rotating groove one (11), a gear one (62) which is rotatably arranged in the containing groove one (12), a rotating connecting column (63) which is rotatably arranged in the rotating groove two (13), a gear two (64) which is rotatably arranged in the containing groove two (14) and a handle one (65) which is arranged on the top surface of the rotating connecting column (63), the gear one (62) is coaxially arranged with the rotating column (61), the gear one (62) is connected with the rotating column (61), the gear two (64) is coaxially arranged with the rotating connecting column (63), the gear two (64) is connected with the rotating connecting column (63), the gear two (64) is engaged with the gear one (62), and the mounting base (2) is arranged on the rotating column (61).

6. A noise detection apparatus according to claim 5, characterised in that: A penetrating groove is opened in the top surface of the machine table (1), a positioning mechanism (7) is arranged on the machine table (1), the positioning mechanism (7) comprises a screw rod two (71) which is screwedly arranged in the penetrating groove and an inserting rod (72) which can be inserted into the ground, the inserting rod (72) is arranged on the screw rod two (71), and a handle two is arranged on the screw rod two (71).

7. A noise detection apparatus according to claim 6, characterised in that: The positioning mechanism (7) comprises a limiting disc (73) which can abut against the bottom surface of the machine table (1), and the limiting disc (73) is arranged between the screw rod two (71) and the inserting rod (72).

8. The noise detection apparatus of claim 5, wherein: A supporting column (16) is arranged on the bottom surface of the machine table (1), and a universal pulley (17) is arranged on the supporting column (16).