An asphalt pavement noise reduction effect detection device and detection method

Abstract

The application discloses a kind of asphalt pavement noise reduction effect detection device and detection method, it is related to pavement noise detection technical field, including installation disc, support arm is rotatably installed on support turntable, hand wheel I is rotatably installed on the disc, hand wheel I is installed for driving the oblique adjusting assembly of support arm rotation, noise monitor is installed in placing groove by clamping component.A kind of asphalt pavement noise reduction effect detection device detection method, comprising the following steps: step 1: installation disc is fixed on road surface by foot bolt, by shaking hand wheel II, make sliding frame slide relative to support arm, shear telescopic frame is stretched to adjust the interval of noise monitor and extension arm, oblique adjusting assembly can drive support arm relative to installation disc and be inclined to adjust, to change the inclination angle of noise monitor, greatly facilitate flexible adjustment to noise monitor according to detection needs, effectively improve the detection efficiency and accuracy of asphalt pavement noise reduction detection.

Description

Technical Field

[0001] This invention relates to the field of road noise detection technology, specifically to a device and method for detecting the noise reduction effect of asphalt pavement. Background Technology

[0002] Asphalt pavement is the most widely used high-grade pavement in road construction. It is constructed by mixing mineral materials as a framework with road-grade asphalt binder, combining practicality and comfort. Its core raw materials include asphalt binder and aggregates. Asphalt acts as a binder, binding the aggregates together to improve pavement strength and water resistance. Aggregates are divided into coarse and fine types, respectively serving as the framework and filler to ensure pavement density. Asphalt pavement has many advantages: a smooth surface, low driving noise, and a superior driving experience; good anti-skid performance, effectively shortening braking distance and improving driving safety; convenient construction, short construction period, simple maintenance, and quick restoration of traffic. Furthermore, it is heat-resistant, crack-resistant, and suitable for various climates and road conditions.

[0003] Asphalt pavement noise detection is a key means of evaluating pavement acoustic performance and controlling traffic noise pollution. The core of the detection is the noise generated by tire contact with the pavement. When testing the noise reduction effect of asphalt pavement, the detection device is installed in the test area for multi-angle measurements. However, current detection devices cannot be flexibly adjusted according to testing requirements, making adjustment very inconvenient when multi-point, multi-directional testing is needed. It is difficult to adjust the position and orientation of the noise detector, significantly impacting the efficiency of asphalt pavement noise reduction effect testing. To address these technical shortcomings, this paper provides an asphalt pavement noise reduction effect testing device and method to solve the aforementioned problems. Summary of the Invention

[0004] The purpose of this invention is to provide a device and method for detecting the noise reduction effect of asphalt pavement, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A noise reduction effect testing device for asphalt pavement includes a mounting plate, a cylindrical body fixed on the mounting plate, a support turntable rotatably mounted on the cylindrical body, a support arm rotatably mounted on the support turntable, a handwheel I rotatably mounted on the mounting plate, and a tilt adjustment component for driving the support arm to rotate on the handwheel I. A handwheel III rotatably mounted on the cylindrical body, and a steering component for driving the support turntable to rotate relative to the cylindrical body on the handwheel III. An extension arm is fixed to the top of the support arm, and a sliding frame is slidably sleeved on the support arm, with a connecting strip fixed to the sliding frame. A handwheel II is rotatably mounted on the extension arm. A sliding drive assembly for driving the sliding frame to slide relative to the support arm is mounted on the handwheel II. Two drive rods are hinged to the top of the sliding frame. A scissor-type telescopic frame is hinged to the drive rods. A pivot fixed to the extension arm is rotatably mounted in the middle of the scissor-type telescopic frame. A pair of driven rods are hinged to the top of the scissor-type telescopic frame. A sleeve block is hinged to the end of the driven rod away from the scissor-type telescopic frame. A support platform is slidably mounted on the sleeve block. A placement groove is mounted on the support platform. A noise monitoring instrument is installed in the placement groove through a snap-fit ​​assembly.

[0006] As an improvement of the present invention: the sliding drive assembly includes a rack fixed on the connecting strip plate, a gear meshing with the rack is fixed on the handwheel II, and an elastic positioning assembly for positioning the connecting strip plate is installed on the extension arm.

[0007] As an improvement of the present invention: the elastic positioning component includes a sleeve fixed on the extension arm, an insert block is slidably installed inside the sleeve, a V-groove is provided on the side wall of the connecting strip to fit the insert block, and a push spring is fixed between the insert block and the sleeve.

[0008] As an improvement of the present invention: the tilt adjustment assembly includes a threaded rod I rotatably mounted on the support turntable, a handwheel I fixed to the end of the threaded rod I, a sliding frame threadedly connected to the support turntable on the threaded rod I, and an adjustment rod hinged between the sliding frame and the support arm.

[0009] As an improvement of the present invention: the steering assembly includes an adjusting plate rotatably mounted inside the cylinder, a traction rod is eccentrically hinged to the adjusting plate, and a radial sliding plate is hinged to the end of the traction rod away from the adjusting plate, the radial sliding plate slidingly penetrating the side wall of the cylinder.

[0010] As an improvement of the present invention: a threaded rod I is rotatably mounted on the cylinder, a threaded sleeve is threaded onto the threaded rod I, the threaded sleeve is fixed on the radial sliding plate, and the handwheel III is fixed at the end of the threaded rod I.

[0011] As an improvement of the present invention: the snap-fit ​​assembly includes two symmetrically arranged rotating frames rotatably mounted on the placement slot, a snap plate that abuts against the noise monitor is slidably mounted on the rotating frame, a traction spring is fixed between the snap plate and the rotating frame, and a torsion spring is fixed between the rotating end of the rotating frame and the placement slot.

[0012] As an improvement of the present invention: a hemispherical shell is fixed on the support platform, and the placement groove is embedded and fixed inside the hemispherical shell.

[0013] A detection method using an asphalt pavement noise reduction effect detection device includes the following steps: Step 1: Fix the mounting plate to the road surface with anchor bolts, and slide the sliding frame relative to the support arm by turning handwheel II. Extend the scissor telescopic frame to adjust the distance between the noise monitor and the extension arm. Step 2: Drive the tilt adjustment component by turning the handwheel I, so that the support arm tilts relative to the support turntable, thereby adjusting the tilt angle of the noise monitor. Step 3: Drive the steering assembly by turning handwheel III to rotate the support turntable relative to the mounting plate, so as to adjust the orientation of the noise monitor according to the detection position; Step 4: Turn on the noise monitoring device to collect and analyze the noise from the asphalt pavement. The noise level in decibels is used to determine the noise reduction effect of the asphalt pavement.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention uses a noise monitoring instrument to detect noise reduction in asphalt pavement. The sliding drive component can drive the scissor telescopic frame to extend and retract, thereby changing the distance between the noise monitoring instrument and the mounting plate. The tilt adjustment component can drive the support arm to tilt relative to the mounting plate, thereby changing the tilt angle of the noise monitoring instrument. The steering component can drive the support arm to rotate, thereby changing the orientation of the noise monitoring instrument. This greatly facilitates the flexible adjustment of the noise monitoring instrument according to the detection needs, and effectively improves the detection efficiency and accuracy of noise reduction detection in asphalt pavement.

[0015] 2. The clamping plate and rotating frame in this invention can rotate relative to the placement slot, so that the clamping plate can be clamped onto the noise monitoring instrument. With the help of the elastic traction force of the traction spring and the elastic torsional force of the torsion spring, the clamping plate can be stably clamped onto the noise monitoring instrument. The installation and operation of the noise monitoring instrument is simple and quick, effectively improving the detection efficiency of noise reduction detection of asphalt pavement. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 For the present inventionFigure 1 A diagram from a particular perspective; Figure 3 This is a schematic diagram showing the connection of the hemispherical shell, placement groove, support platform, and snap-fit ​​assembly in this invention; Figure 4 This is a schematic diagram showing the connection of components such as the card plate, traction spring, rotating frame, and torsion spring in this invention; Figure 5 for Figure 4 A schematic diagram of the local structural connections; Figure 6 For the present invention Figure 5 Enlarged diagram of section A in the middle; Figure 7 This is a schematic diagram showing the connection of components such as the sliding frame, rack, and insert block in this invention; Figure 8 This is a schematic diagram showing the connection of components such as the supporting turntable, cylinder, and steering assembly in this invention.

[0017] In the diagram: 1-Mounting plate, 2-Cylinder, 3-Support turntable, 4-Sliding frame, 5-Threaded rod I, 6-Handwheel I, 7-Adjusting rod, 8-Support arm, 9-Sliding frame, 10-Connecting strip, 11-Rack, 12-Gear, 13-Handwheel II, 14-Drive rod, 15-Scissor telescopic frame, 16-Support platform, 17-Driven rod, 18-Hemispherical shell, 19-Noise monitor, 20-Sleeve block, 21-Handwheel III, 22-Extension arm, 23-Adjusting plate, 24-Pivot, 25-Connecting spring, 26-Guide rod, 27-Placement slot, 28-Clamping plate, 29-Traction spring, 30-Rotating frame, 31-Torsion spring, 32-Radial sliding plate, 33-Sleeve, 34-Insertion block, 35-V-groove, 36-Push spring, 37-Traction rod, 38-Threaded sleeve. Detailed Implementation

[0018] The technical solution of the present invention will be further described in detail below with reference to specific embodiments: First embodiment: Please refer to Figures 1-8A noise reduction effect testing device for asphalt pavement includes a mounting plate 1, a cylinder 2 fixed on the mounting plate 1, a support turntable 3 rotatably mounted on the cylinder 2, a support arm 8 rotatably mounted on the support turntable 3, a handwheel I6 rotatably mounted on the mounting plate 1, a tilt adjustment component for driving the support arm 8 to rotate on the handwheel I6, a handwheel III21 rotatably mounted on the cylinder 2, a steering component for driving the support turntable 3 to rotate relative to the cylinder 2 on the handwheel III21, an extension arm 22 fixed to the top of the support arm 8, a sliding frame 9 slidably sleeved on the support arm 8, a connecting strip 10 fixed on the sliding frame 9, and a rotating extension arm 22... A handwheel II13 is mounted on the sliding frame 9, and a sliding drive assembly for driving the sliding frame 9 to slide relative to the support arm 8 is mounted on the handwheel II13. Two drive rods 14 are hinged to the top of the sliding frame 9, and a scissor telescopic frame 15 is hinged to the drive rods 14. A pivot 24 fixed to the extension arm 22 is rotatably mounted in the middle of the scissor telescopic frame 15. A pair of driven rods 17 are hinged to the top of the scissor telescopic frame 15. A sleeve block 20 is hinged to the end of the driven rod 17 away from the scissor telescopic frame 15. A support platform 16 is slidably mounted on the sleeve block 20. A placement groove 27 is mounted on the support platform 16. A noise monitoring instrument 19 is installed in the placement groove 27 through a snap-fit ​​assembly.

[0019] A detection method using an asphalt pavement noise reduction effect detection device includes the following steps: Step 1: Fix the mounting plate 1 to the road surface with anchor bolts, and slide the sliding frame 9 relative to the support arm 8 by turning the handwheel II13. Extend the scissor telescopic frame 15 to adjust the distance between the noise monitor 19 and the extension arm 22. Step 2: Drive the tilt adjustment component by turning the handwheel I6 to tilt the support arm 8 relative to the support turntable 3, so as to adjust the tilt angle of the noise monitoring instrument 19. Step 3: Drive the steering assembly by turning the handwheel III21 to turn the support turntable 3 relative to the mounting plate 1, so that the orientation of the noise monitor 19 can be adjusted according to the detection position; Step 4: Turn on the noise monitoring device 19 and use it to collect and analyze the noise of the asphalt pavement. The noise reduction effect of the asphalt pavement is judged based on the decibel level of the noise.

[0020] When testing the noise reduction effect of asphalt pavement, this device is installed at the edge of the asphalt road. The noise of the asphalt pavement is collected by the noise monitoring instrument 19, and the collected noise decibel values ​​are analyzed to determine the noise reduction effect of the asphalt pavement.

[0021] The sliding drive assembly of this device includes a rack 11 fixed on the connecting plate 10, a gear 12 meshing with the rack 11 fixed on the handwheel II 13, and an elastic positioning assembly for positioning the connecting plate 10 mounted on the extension arm 22. The elastic positioning assembly includes a sleeve 33 fixed on the extension arm 22, an insert 34 slidably mounted inside the sleeve 33, a V-groove 35 on the side wall of the connecting plate 10 that engages with the insert 34, and a push spring 36 fixed between the insert 34 and the sleeve 33.

[0022] By cranking the handwheel II13, the connected gear 12 can be driven to rotate. The gear 12 drives the meshing rack 11 to vertically adjust the connecting strip 10 and the sliding frame 9 relative to the support arm 8. This allows the sliding frame 9 to extend or retract the scissor-type telescopic frame 15 via the drive rod 14, and the driven rod 17 to move the support platform 16. Ultimately, this achieves the effect of adjusting the distance between the noise monitor 19 and the mounting plate 1.

[0023] In addition, the tilt adjustment assembly of this device includes a threaded rod I5 rotatably mounted on the support turntable 3, a handwheel I6 fixed to the end of the threaded rod I5, a sliding frame 4 threadedly connected to the support turntable 3 on the threaded rod I5, and an adjustment rod 7 hinged between the sliding frame 4 and the support arm 8.

[0024] The handwheel I6 drives the threaded rod I5, which is fixed to it, to rotate. The threaded rod I5 drives the sliding frame 4 to slide, so that the sliding frame 4 can drive the support arm 8 to rotate relative to the mounting plate 1 through the adjusting rod 7. This allows the orientation of the noise monitor 19 to be adjusted, ensuring that the noise monitor 19 is relative to the area being detected and improving the accuracy of noise detection.

[0025] The steering assembly includes an adjusting disc 23 rotatably mounted inside the cylinder 2. A traction rod 37 is eccentrically hinged to the adjusting disc 23. A radial sliding plate 32 is hinged to the end of the traction rod 37 away from the adjusting disc 23. The radial sliding plate 32 slides through the side wall of the cylinder 2. A threaded rod I5 is rotatably mounted on the cylinder 2. A threaded sleeve 38 is threaded onto the threaded rod I5. The threaded sleeve 38 is fixed to the radial sliding plate 32. A handwheel III 21 is fixed to the end of the threaded rod I5.

[0026] By cranking the handwheel III21, the threaded rod I5 can be driven to rotate. The threaded rod I5 drives the threaded sleeve 38 connected to it to move. The threaded sleeve 38 drives the radial sliding plate 32 to slide relative to the cylinder 2. The radial sliding plate 32 drives the adjusting plate 23 to rotate through the traction rod 37, thereby realizing the rotation of the support turntable 3 relative to the cylinder 2. This achieves the orientation adjustment effect of the noise monitoring instrument 19 and improves the measurement accuracy of the noise monitoring instrument 19.

[0027] Second embodiment: Please refer toFigures 1-8 In addition to the first embodiment, the snap-fit ​​assembly includes two symmetrically arranged rotating frames 30 rotatably mounted on the placement slot 27. A snap plate 28 that abuts against the noise monitor 19 is slidably mounted on the rotating frame 30. A traction spring 29 is fixed between the snap plate 28 and the rotating frame 30. A torsion spring 31 is fixed between the rotating end of the rotating frame 30 and the placement slot 27.

[0028] The noise monitor 19 in this device is installed in the placement slot 27. The rotating frame 30 drives the locking plate 28 to rotate, so that the locking plate 28 can be locked onto the noise monitor 19. Under the elastic traction of the traction spring 29 and the torsional force of the torsion spring 31, the locking plate 28 can stably lock onto the noise monitor 19, ensuring the reliable installation of the noise monitor 19. When it is necessary to disassemble the noise monitor 19, the noise monitor 19 can be quickly unlocked by moving the locking plate 28 away from the noise monitor 19, making the installation or disassembly of the noise monitor 19 simple and quick.

[0029] The support platform 16 has a hemispherical shell 18 fixed on it, and the placement groove 27 is embedded and fixed in the hemispherical shell 18. The hemispherical shell 18 can focus the noise transmitted from the asphalt pavement, so that the noise monitoring instrument 19 can collect and analyze the noise more accurately, which effectively improves the detection accuracy of the noise reduction effect of the asphalt pavement.

[0030] In summary, this invention uses a noise monitoring instrument 19 to detect noise reduction in asphalt pavement. The sliding drive assembly can drive the scissor-type telescopic frame 15 to extend and retract, changing the distance between the noise monitoring instrument 19 and the mounting plate 1. The tilt adjustment assembly can drive the support arm 8 to tilt relative to the mounting plate 1, changing the tilt angle of the noise monitoring instrument 19. The steering assembly can drive the support arm 8 to rotate, changing the orientation of the noise monitoring instrument 19. This greatly facilitates flexible adjustment of the noise monitoring instrument 19 according to testing needs, effectively improving the detection efficiency and accuracy of noise reduction testing for asphalt pavement.

[0031] The clamping plate 28 and rotating frame 30 in this invention can rotate relative to the placement slot 27, so that the clamping plate 28 can be clamped onto the noise monitoring instrument 19. With the help of the elastic traction force of the traction spring 29 and the elastic torsional force of the torsion spring 31, the clamping plate 28 can be stably clamped onto the noise monitoring instrument 19. The installation and operation of the noise monitoring instrument 19 is simple and quick, effectively improving the detection efficiency of noise reduction detection of asphalt pavement.

Claims

1. A device for testing the noise reduction effect of asphalt pavement, comprising a mounting plate (1), a cylinder (2) fixed on the mounting plate (1), a support turntable (3) rotatably mounted on the cylinder (2), and a support arm (8) rotatably mounted on the support turntable (3), characterized in that, A handwheel I (6) is rotatably mounted on the mounting plate (1), and a tilt adjustment component for driving the support arm (8) to rotate is mounted on the handwheel I (6). A handwheel III (21) is rotatably mounted on the cylinder (2), and a steering component for driving the support turntable (3) to rotate relative to the cylinder (2) is mounted on the handwheel III (21). An extension arm (22) is fixed to the top of the support arm (8), and a sliding frame (9) is slidably sleeved on the support arm (8). A connecting strip (10) is fixed on the sliding frame (9). A handwheel II (13) is rotatably mounted on the extension arm (22), and a component for driving the sliding frame (9) is mounted on the handwheel II (13). The sliding drive assembly slides relative to the support arm (8). The top of the sliding frame (9) is hinged with two drive rods (14). A scissor telescopic frame (15) is hinged on the drive rods (14). A pivot (24) fixed on the extension arm (22) is rotatably installed in the middle of the scissor telescopic frame (15). A pair of driven rods (17) are hinged to the top of the scissor telescopic frame (15). A sleeve block (20) is hinged to the end of the driven rod (17) away from the scissor telescopic frame (15). A support platform (16) is slidably installed on the sleeve block (20). A placement groove (27) is installed on the support platform (16). A noise monitoring instrument (19) is installed in the placement groove (27) through a snap-fit ​​assembly.

2. The asphalt pavement noise reduction effect testing device according to claim 1, characterized in that, The sliding drive assembly includes a rack (11) fixed on the connecting strip (10), a gear (12) that meshes with the rack (11) fixed on the handwheel II (13), and an elastic positioning assembly for positioning the connecting strip (10) mounted on the extension arm (22).

3. The asphalt pavement noise reduction effect testing device according to claim 2, characterized in that, The elastic positioning component includes a sleeve (33) fixed on the extension arm (22), a plug (34) is slidably installed inside the sleeve (33), and a V-groove (35) is provided on the side wall of the connecting strip (10) to fit the plug (34). A push spring (36) is fixed between the plug (34) and the sleeve (33).

4. The asphalt pavement noise reduction effect testing device according to claim 1, characterized in that, The tilt adjustment assembly includes a threaded rod I (5) rotatably mounted on the support turntable (3), a handwheel I (6) fixed to the end of the threaded rod I (5), a sliding frame (4) threadedly connected to the support turntable (3) on the threaded rod I (5), and an adjustment rod (7) hinged between the sliding frame (4) and the support arm (8).

5. The asphalt pavement noise reduction effect testing device according to claim 1, characterized in that, The steering assembly includes an adjustment disc (23) rotatably mounted inside the cylinder (2), with a traction rod (37) eccentrically hinged to the adjustment disc (23). A radial sliding plate (32) is hinged to one end of the traction rod (37) away from the adjustment disc (23), and the radial sliding plate (32) slides through the side wall of the cylinder (2).

6. The asphalt pavement noise reduction effect testing device according to claim 5, characterized in that, A threaded rod I (5) is rotatably mounted on the cylinder (2), and a threaded sleeve (38) is threaded onto the threaded rod I (5). The threaded sleeve (38) is fixed on the radial sliding plate (32), and the handwheel III (21) is fixed at the end of the threaded rod I (5).

7. The asphalt pavement noise reduction effect testing device according to claim 1, characterized in that, The snap-fit ​​assembly includes two symmetrically arranged rotating frames (30) rotatably mounted on the placement slot (27). A snap plate (28) that abuts against the noise monitor (19) is slidably mounted on the rotating frame (30). A traction spring (29) is fixed between the snap plate (28) and the rotating frame (30). A torsion spring (31) is fixed between the rotating end of the rotating frame (30) and the placement slot (27).

8. The asphalt pavement noise reduction effect testing device according to claim 1, characterized in that, A hemispherical shell (18) is fixed on the support platform (16), and the placement groove (27) is embedded and fixed in the hemispherical shell (18).

9. A testing method using the asphalt pavement noise reduction effect testing device as described in claim 1, characterized in that, Includes the following steps: Step 1: Fix the mounting plate (1) to the road surface with anchor bolts, and slide the sliding frame (9) relative to the support arm (8) by turning the handwheel II (13). Extend the scissor telescopic frame (15) to adjust the distance between the noise monitor (19) and the extension arm (22). Step 2: Drive the tilt adjustment component by turning the handwheel I (6) so that the support arm (8) is tilted relative to the support turntable (3) to adjust the tilt angle of the noise monitor (19); Step 3: Drive the steering assembly by turning the handwheel III (21) to turn the support turntable (3) relative to the mounting plate (1) so that the orientation of the noise monitor (19) can be adjusted according to the detection position; Step 4: Turn on the noise monitoring device (19) and use the noise monitoring device (19) to collect and analyze the noise of the asphalt pavement. The noise reduction effect of the asphalt pavement is judged based on the decibel level of the noise.

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