Asphalt pavement noise reduction effect testing device

Abstract

The utility model relates to the technical field of road noise detection, and discloses an asphalt pavement noise reduction effect testing device which comprises a main body assembly, the main body assembly comprises a base, a shell is fixed on the upper surface of the base, a chain conveyor is arranged in the shell, a testing wheel is arranged on a conveying belt of the chain conveyor, and the testing wheel is connected with the base. The same connecting frame is fixed to the two sides of the chain conveyor. By arranging the main body assembly and the detection assembly, an asphalt pavement test sample is placed in the sample cabinet during use, the telescopic rod drives the decibel meter to be in contact with the asphalt pavement test sample, and the motor rotates to drive the threaded rod to rotate through the reduction gear box, so that the chain conveyor moves downwards, and then the chain conveyor is started; finally, the real condition that a vehicle runs on the concrete road is simulated, noise reduction detection is carried out, and the problems that noise reduction detection is carried out on the asphalt pavement only through knocking in a related scheme, the actual effect is not consistent, and the detection value is not ideal are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of road noise detection, in particular to a device for testing the noise reduction effect of an asphalt pavement. Background Art

[0002] Since steel slag asphalt concrete has different proportions of its components, its noise reduction and other properties are also different when using steel slag asphalt concrete with different proportions. In order to meet different road use requirements, it is necessary to test the noise reduction performance of steel slag asphalt concrete pavement to determine whether the steel slag asphalt concrete pavement meets the standards.

[0003] Among them, the "A device for detecting noise reduction performance of steel slag asphalt concrete pavement" disclosed with authorization number "CN220854756U" drives the crankshaft to rotate through a driving motor, which drives the turntable to rotate, and the turntable drives the pendulum to rotate. Under the action of centrifugal force, the pendulum strikes the lower surface of the steel slag asphalt concrete block through the test port, causing the steel slag asphalt concrete block to generate noise. This device avoids the need to manually pull the heavy hammer to impact the steel slag asphalt concrete block to generate noise every time, greatly reducing the labor intensity of the testers, reducing their fatigue, and improving the efficiency of the test.

[0004] However, this solution also has certain defects. That is, it generates noise by knocking to test the noise reduction effect of the road surface. This solution cannot simulate the actual road usage, so the test value is not accurate.

[0005] Currently, no effective solutions have been proposed for the problems in related technologies. Utility Model Content

[0006] In response to the shortcomings of the existing technology, the utility model provides a device for testing the noise reduction effect of asphalt pavement. Through the provision of a main component and a detection component, the utility model solves the problem that the noise reduction detection of the asphalt pavement in the related scheme is only performed by knocking, which is inconsistent with the actual effect and the detection value is not ideal.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] A device for testing the noise reduction effect of an asphalt pavement comprises a main body component, the main body component comprising a base, an outer shell being fixed to the upper surface of the base, a chain conveyor being provided in the outer shell, a test wheel being provided on the conveyor belt of the chain conveyor, a connecting frame being fixed to the same side of the chain conveyor, a threaded rod being threadedly connected to the center of the connecting frame, a motor being fixed to the center above the outer shell, a reduction gearbox being fixed to the power shaft of the motor, an output shaft of the reduction gearbox being away from one end of the motor passing through the outer shell and being fixedly connected to the threaded rod; a limit rod being vertically movably connected to the upper end wall of the outer shell, one end of the limit rod being fixed to the connecting frame; a sample cabinet being movably connected to one side of the outer shell, a detection slot being provided at the bottom end of the sample cabinet; a detection assembly being further provided on the base, the detection assembly comprising a display screen provided on one side of the outer shell, a telescopic rod being fixed to the center of the bottom end of the base, a decibel meter being provided on the inner side of the base, the telescopic end of the telescopic rod passing through the outer shell and being fixedly connected to the decibel meter, and the decibel meter being electrically connected to the display screen.

[0009] Preferably, the test wheels are provided in multiple groups.

[0010] Preferably, two limiting rods are provided.

[0011] Preferably, a support is provided on both sides of the sample cabinet.

[0012] Preferably, each of the support members is rotatably connected to a plurality of movable wheels.

[0013] Preferably, the sample cabinet is also provided with a handle.

[0014] Compared with the existing technology, the present invention provides a device for testing the noise reduction effect of asphalt pavement, which has the following beneficial effects:

[0015] 1. The utility model is provided with a main component and a detection component. When in use, the asphalt pavement test sample is placed in the sample cabinet, the telescopic rod drives the decibel meter to contact the asphalt pavement test sample, the motor rotates through the reduction gear box to drive the threaded rod to rotate, so that the chain conveyor moves downward, and then the chain conveyor is started, and finally the actual situation of a vehicle driving on a concrete road is simulated to perform noise reduction detection, which solves the problem that the noise reduction detection of the asphalt pavement is only performed by knocking in the related solutions, which is inconsistent with the actual effect and the detection value is not ideal.

[0016] 2. The utility model uses the main components provided to test the noise reduction effect of asphalt pavement. The pressure between the test wheel and the road surface can be adjusted by the motor, and the rotation speed of the chain conveyor can also be adjusted to simulate the different noise problems caused by vehicles of different masses and speeds passing over the road surface, further improving the simulation of the actual road conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the internal structure of the shell of the utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure of the utility model from the bottom perspective.

[0019] In the picture:

[0020] 1. Main assembly; 11. Base; 12. Housing; 13. Chain conveyor; 14. Test wheel; 15. Connecting frame; 16. Motor; 161. Reduction gearbox; 17. Threaded rod; 171. Limit rod; 18. Sample cabinet; 181. Test tank; 19. Support member; 191. Movable wheel;

[0021] 2. Detection component; 21. Display screen; 22. Telescopic rod; 23. Decibel meter. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] As introduced in the background technology, there are deficiencies in the existing technology. In order to solve the above technical problems, this application proposes a device for testing the noise reduction effect of asphalt pavement.

[0024] See also Figure 1 - Figure 2A device for testing the noise reduction effect of an asphalt pavement includes a main body component 1, the main body component 1 includes a base 11, a shell 12 is fixed on the upper surface of the base 11, a chain conveyor 13 is provided in the shell 12, a test wheel 14 is provided on the conveyor belt of the chain conveyor 13, the same connecting frame 15 is fixed on both sides of the chain conveyor 13, the center of the connecting frame 15 is threadedly connected to a threaded rod 17, a motor 16 is also fixed at the center above the shell 12, the power shaft of the motor 16 is fixed with a reduction gear box 161, the output shaft of the reduction gear box 161 away from the end of the motor 16 passes through the shell 12 and is fixed to the threaded rod 17 connected; a limit rod 171 is also vertically movably connected to the upper end wall of the shell 12, and one end of the limit rod 171 is fixed to the connecting frame 15; a sample cabinet 18 is also movably connected to one side of the shell 12, and a detection slot 181 is provided at the bottom end of the sample cabinet 18; a detection component 2 is also provided on the base 11, and the detection component 2 includes a display screen 21 arranged on one side of the shell 12, and a telescopic rod 22 is also fixed to the center of the bottom end of the base 11, and a decibel meter 23 is provided on the inner side of the base 11, and the telescopic end of the telescopic rod 22 passes through the shell 12 and is fixedly connected to the decibel meter 23, and the decibel meter 23 is electrically connected to the display screen 21.

[0025] When using this device, the asphalt pavement test sample can be placed in the sample cabinet 18, and then the sample cabinet 18 is pushed into the outer shell 12. The outer shell 12 can not only protect the relevant equipment, but also greatly isolate the internal sound from being transmitted to the outside, so that it can increase the accuracy of the noise test. After the asphalt pavement test sample is placed, the telescopic rod 22 drives the decibel meter 23 to contact the asphalt pavement test sample, and then the motor 16 rotates, and drives the threaded rod 17 to rotate through the reduction gear box 161, so that the chain conveyor 13 moves downward, and finally the test wheel 14 contacts the asphalt pavement test sample, and then continues to apply a certain pressure to simulate the mass of the car itself, and then starts the chain conveyor 13, and finally simulates the actual situation of the vehicle driving on the concrete road to perform noise reduction detection.

[0026] Furthermore, the test wheels 14 are provided in multiple groups, and the multiple groups of test wheels 14 can better simulate the real situation of noisy road surface during actual road use.

[0027] Furthermore, two limiting rods 171 are provided; the two limiting rods 171 can better disperse the self-rotation stress generated by themselves and prevent themselves from breaking.

[0028] Furthermore, a support member 19 is provided on both sides of the sample cabinet 18; the support member 19 is used to support the sample cabinet 18 when it is pulled out, so as to prevent the sample cabinet 18 from being broken due to the excessive weight of the asphalt pavement sample.

[0029] Furthermore, each of the supporting members 19 is rotatably connected to a plurality of movable wheels 191 ; the movable wheels 191 make it easy to pull out and push in the sample cabinet 18 .

[0030] Furthermore, the sample cabinet 18 is provided with a handle, which facilitates pushing and pulling of the sample cabinet 18 .

[0031] Working principle: When using this device, the asphalt pavement test sample can be placed in the sample cabinet 18, and then the sample cabinet 18 is pushed into the outer shell 12. The outer shell 12 can not only protect the relevant equipment, but also greatly isolate the internal sound from being transmitted to the outside, so that it can increase the accuracy of the noise test. After the asphalt pavement test sample is placed, the telescopic rod 22 drives the decibel meter 23 to contact the asphalt pavement test sample, and then the motor 16 rotates, and drives the threaded rod 17 to rotate through the reduction gear box 161, so that the chain conveyor 13 moves downward, and finally the test wheel 14 contacts the asphalt pavement test sample, and then continues to apply a certain pressure to simulate the mass of the car itself, and then starts the chain conveyor 13, and finally simulates the actual situation of the vehicle driving on the concrete road to perform noise reduction detection.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for testing the noise reduction effect of an asphalt pavement, comprising a main assembly (1), characterized in that: The main assembly (1) includes a base (11), a housing (12) is fixed on the upper surface of the base (11), a chain conveyor (13) is arranged in the housing (12), a test wheel (14) is arranged on the conveyor belt of the chain conveyor (13), a same connecting frame (15) is fixed on both sides of the chain conveyor (13), a threaded rod (17) is connected to the center of the connecting frame (15), and a motor (16) is also fixed at the center above the housing (12), and the motor (16) A reduction gear box (161) is fixed to the power shaft, and an output shaft of the reduction gear box (161) at one end away from the motor (16) passes through the housing (12) and is fixedly connected to the threaded rod (17); a limit rod (171) is also vertically movably connected to the upper end wall of the housing (12), and one end of the limit rod (171) is fixed to the connecting frame (15); a sample cabinet (18) is also movably connected to one side of the housing (12), and a detection slot (181) is provided at the bottom end of the sample cabinet (18); A detection component (2) is also provided on the base (11), and the detection component (2) includes a display screen (21) provided on one side of the housing (12). A telescopic rod (22) is also fixed at the center of the bottom end of the base (11), and a decibel meter (23) is provided inside the base (11). The telescopic end of the telescopic rod (22) passes through the housing (12) and is fixedly connected to the decibel meter (23), and the decibel meter (23) is electrically connected to the display screen (21).

2. The asphalt pavement noise reduction effect testing device according to claim 1, characterized in that: The test wheels (14) are provided in multiple groups.

3. The asphalt pavement noise reduction effect testing device according to claim 1, characterized in that: Two limiting rods (171) are provided.

4. The asphalt pavement noise reduction effect testing device according to claim 1, characterized in that: A support member (19) is provided on both sides of the sample cabinet (18).

5. The asphalt pavement noise reduction effect testing device according to claim 4, characterized in that: Each of the supporting members (19) is rotatably connected to a plurality of movable wheels (191).

6. The asphalt pavement noise reduction effect testing device according to claim 1, characterized in that: The sample cabinet (18) is also provided with a handle.

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