Noise detection and comparison device

Abstract

The utility model discloses a noise detection and comparison device which comprises a detection box body and walking wheels fixedly installed at the corners of the bottom end of the detection box body, a first bidirectional lead screw is arranged in a rotating frame in the middle of the detection box body, and the first bidirectional lead screw is symmetrically connected with two sliding frames in a threaded mode. Connecting columns are symmetrically erected at the two ends of the two sliding frames, a driving motor is fixedly installed on one side of the detection box body, one side of the driving motor is electrically connected with a controller, the output end of the driving motor is fixedly connected with one end of a first two-way lead screw, and a noise collecting device mounting assembly is in transmission connection with the top end in the detection box body. The bottom end in the detection box body is slidably connected with a damping assembly, vibration noise interference of an instrument is reduced, the influence of external vibration on the instrument can be effectively isolated, the frequency response characteristic is stabilized, the damping assembly can keep the frequency response characteristic of the noise detection device stable, contact with the outside is reduced, and the service life of the device is prolonged.

Description

Technical Field

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

[0002] Noise detection refers to the process of measuring, analyzing, and evaluating sound in the environment. Noise detection requires the use of appropriate noise detection devices, and different methods and equipment may produce different results. By comparing these results, the error ranges of various detection methods can be identified, facilitating the analysis of comprehensive data and making the results more accurate. This allows for better determination of parameters such as sound intensity, frequency, and duration to assess whether noise levels exceed prescribed noise standards and to understand the impact of noise on human health, work efficiency, and quality of life.

[0003] A noise detection and comparison device, disclosed in authorization announcement number CN218496256U, includes a housing. A first shell is fixedly connected to the upper left side of the inner cavity of the housing. A servo motor is fixedly installed at the bottom of the first shell. A threaded rod is fixedly connected to the output end of the servo motor. A lifting block is threadedly connected to the lower end of the outer surface of the threaded rod. A lifting plate is fixedly connected to the right side of the lifting block. A drive motor is fixedly installed at the middle of the top of the lifting plate. A rotating plate is fixedly connected to the output end of the drive motor. A connecting rod is fixedly connected to the middle of the top of the rotating plate. An LED display screen is fixedly connected to the top of the connecting rod. Recording devices are provided at the middle of both the left and right sides of the LED display screen. The LED display screen and recording devices are located at the top of the housing. Both the LED display screen and the recording devices are exposed to the air when in use and when idle. After long-term use, they will be affected by various natural factors, and the performance of the device will gradually change, leading to the failure of calibration parameters and affecting the service life and effectiveness of the device. At the same time, the device is in direct contact with the ground and is easily affected by external vibrations, which will affect the noise detection device itself and the detection results. Utility Model Content

[0004] The purpose of this invention is to provide a noise detection and comparison device to solve the problems mentioned in the background art, such as the device being exposed to the air for a long time and being affected by various natural factors, causing the device's performance to gradually change, leading to the failure of calibration parameters, affecting the device's service life and performance, and the device being in direct contact with the ground and easily affected by external vibrations, which in turn affect the noise detection device itself and the detection results.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a noise detection and comparison device, comprising a detection housing, wheels fixedly installed at the bottom corner of the detection housing, a first bidirectional lead screw rotatably mounted in the middle of the detection housing, two sliding frames symmetrically threaded to the first bidirectional lead screw, connecting columns symmetrically mounted at both ends of the two sliding frames, a drive motor fixedly mounted on one side of the detection housing, a controller electrically connected to one side of the drive motor, the output end of the drive motor fixedly connected to one end of the first bidirectional lead screw, and a noise collection device mounting assembly drivenly connected to the top of the inside of the detection housing. A shock-absorbing component is slidably connected to the bottom of the internal structure. By contacting the ground with the shock-absorbing component, the overall impact on the device is minimized, reducing the interference of the instrument's own vibration and noise. It can effectively isolate the influence of external vibration on the instrument itself, stabilize the frequency response characteristics, and keep the frequency response characteristics of the noise detection device stable. At the same time, the noise collection device mounting component can extend from or be hidden inside the detection box along with the shock-absorbing component. Together with the sealed top plate, it protects and prevents dust from the noise detection device, so that when the device is not in use, it reduces contact with the outside world, prevents external factors from affecting the noise detection device, and extends the service life of the device.

[0006] Preferably, the noise collection device mounting assembly includes a first lifting frame, which is movably engaged with the top of the inside of the detection box. Rotating frames are symmetrically rotatably connected to both sides of the first lifting frame. Mounting frames are fixedly connected to the ends of the two rotating frames that are far apart from each other. Two guide rods are symmetrically fixedly connected inside each of the two mounting frames. A second bidirectional lead screw is rotatably connected between the two guide rods. Two clamping blocks are symmetrically threaded onto the body of the second bidirectional lead screw. The two clamping blocks are penetrated by the guide rods and can move along the guide rods, simultaneously providing thrust or pull force to the noise collection device mounting assembly and the shock absorption assembly, thus providing power for the movement of the noise collection device mounting assembly and the shock absorption assembly.

[0007] Preferably, one end of the second bidirectional lead screw extends through one side wall of the mounting bracket, and the other end of the second bidirectional lead screw is connected to the other side wall of the mounting bracket through a bearing with a seat. The second bidirectional lead screw is fixed in position but can rotate to achieve transmission.

[0008] Preferably, the top of the rotating frame is fixedly connected with limit clips at equal intervals, and the first lifting frame has storage slots on both sides. The limit clips match the storage slots, which facilitates the guidance and limitation of the wire harness of the device, so that the wire harness is arranged reasonably, and the rotating frame can be folded for storage.

[0009] Preferably, the shock absorption assembly includes a second lifting frame, which is slidably mounted on the bottom of the detection box. Damping shock absorbers are fixedly installed at the four corners of the bottom surface of the second lifting frame. A support plate is fixedly connected to one end of each of the four damping shock absorbers away from the second lifting frame. A buffer pad is fixedly installed at the bottom of the support plate. The buffer pad and the damping shock absorbers work together to reduce and buffer external vibrations, preventing external vibrations from affecting the device and thus affecting the device's detection results.

[0010] Preferably, a transmission frame is fixedly connected to the top of the second lifting frame and the bottom of the first lifting frame. Two transmission plates are symmetrically rotatably connected inside each of the two transmission frames. The four transmission plates are symmetrically rotatably connected to the ends of the two connecting columns, so that the transmission plates convert the horizontal transmission into the vertical transmission, thereby facilitating the driving of the noise collection device mounting components and the vibration damping components.

[0011] Preferably, a noise comparison system is fixedly connected inside the first lifting frame, and a sealed top plate is fixedly connected to the top of the first lifting frame to capture, store, and modularly process noise.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] By designing a first bidirectional lead screw, a drive motor, a sliding frame, a connecting column, and a transmission plate, the drive motor drives the first bidirectional lead screw to rotate. The rotation of the first bidirectional lead screw engages with the sliding frame, thereby causing the two ends of the transmission plate to move closer together. In conjunction with the transmission frame, the first and second lifting frames extend from inside the detection box or are retracted into the detection box from the outside. This allows the device to be completely hidden inside the detection box when not in use, reducing the time of direct contact with the outside world and minimizing the impact of the external environment on the device.

[0014] By designing a second lifting frame, damping shock absorber, support plate, and buffer pad, the buffer pad reduces the impact of external vibration on the overall vibration of the device when it contacts the ground, prevents internal parts from loosening, reduces the impact of vibration-generated noise on noise collection, and affects the test results and the service life of the device.

[0015] By designing a rotating frame, limiting clamps, mounting brackets, guide rods, a second bidirectional lead screw, and clamping blocks, the noise acquisition module can be clamped and fixed. At the same time, the rotating frame can unfold as the first lifting frame extends. When the first lifting frame is retracted into the detection box, the rotating frame folds down and hides inside the detection box, protecting the module used for collecting, storing, analyzing, and processing noise. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0018] Figure 3 This is a schematic diagram showing the positional distribution of the transmission plate of this utility model;

[0019] Figure 4 This utility model Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0020] In the diagram: 1. Detection box; 2. First bidirectional lead screw; 3. Drive motor; 4. Sliding frame; 5. Connecting column; 6. Transmission plate; 7. First lifting frame; 8. Rotating frame; 9. Limiting clamp; 10. Mounting frame; 11. Guide rod; 12. Second bidirectional lead screw; 13. Clamping block; 14. Damping shock absorber; 15. Support plate; 16. Buffer pad; 17. Transmission frame; 18. Storage slot; 19. Noise comparison system; 20. Controller; 21. Sealed top plate; 22. Walking wheel; 23. Second lifting frame. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0022] Please see Figure 1-4 This utility model provides a noise detection and comparison device, including a detection box 1 and a traveling wheel 22 fixedly installed at the bottom corner of the detection box 1. The traveling wheel 22 makes the device easy to move. A first bidirectional lead screw 2 is rotatably mounted in the middle of the detection box 1. The first bidirectional lead screw 2 is symmetrically threaded with two sliding frames 4, which can be screwed into the first bidirectional lead screw 2. Connecting columns 5 are symmetrically mounted at both ends of the two sliding frames 4. A drive motor 3 is fixedly mounted on one side of the detection box 1. A controller 20 (TMC429 series) is electrically connected to one side of the drive motor 3. The output end of the drive motor 3 is fixedly connected to one end of the first bidirectional lead screw 2. A noise collection device mounting assembly is driven and connected to the top of the inside of the detection box 1 for installing a noise acquisition module. A shock absorption assembly is slidably connected to the bottom of the inside of the detection box 1 to weaken external vibrations and reduce their impact on the overall device.

[0023] Furthermore, the noise collection device mounting assembly includes a first lifting frame 7, which is movably snapped into the top of the detection box 1. Rotating frames 8 are symmetrically rotatably connected to both sides of the first lifting frame 7. Mounting frames 10 are fixedly connected to the ends of the two rotating frames 8 that are far apart from each other. Two guide rods 11 are symmetrically fixedly connected inside each of the two mounting frames 10. A second bidirectional screw 12 is rotatably connected between the two guide rods 11. Two clamping blocks 13 are symmetrically threaded onto the body of the second bidirectional screw 12. The two clamping blocks 13 are penetrated by the guide rods 11 and can move along the guide rods 11. When installing the noise collection module, rotating the second bidirectional screw 12 causes it to rotate and engage with the clamping blocks 13, bringing the two clamping blocks 13 closer together along the guide rods 11 to fix the noise collection module.

[0024] Furthermore, one end of the second bidirectional lead screw 12 extends through one side wall of the mounting bracket 10, and the other end of the second bidirectional lead screw 12 is connected to the other side wall of the mounting bracket 10 through a seated bearing.

[0025] Furthermore, the top of the rotating frame 8 is fixedly connected with limit clips 9 at equal intervals, and the first lifting frame 7 has storage slots 18 on both sides. The limit clips 9 match the storage slots 18, and the data wires of the noise acquisition module are inserted into the limit clips 9 to limit and fix the wires, and the wire harness is arranged reasonably.

[0026] Furthermore, the shock absorption assembly includes a second lifting frame 23, which is slidably mounted at the bottom of the detection box 1. Damping shock absorbers 14 are fixedly installed at the four corners of the bottom surface of the second lifting frame 23. A support plate 15 is fixedly connected to one end of each of the four damping shock absorbers 14 away from the second lifting frame 23. A buffer pad 16 is fixedly installed at the bottom of the support plate 15. When the buffer pad 16 contacts the ground, the external vibration is reduced once by the buffer pad 16 and then transmitted to the damping shock absorber 14 through the support plate 15. The damping shock absorber 14 reduces the vibration again.

[0027] Furthermore, a transmission frame 17 is fixedly connected to the top of the second lifting frame 23 and the bottom of the first lifting frame 7. Two transmission plates 6 are symmetrically rotatably connected inside the two transmission frames 17, and the four transmission plates 6 are symmetrically rotatably connected to the ends of the two connecting columns 5 respectively.

[0028] Furthermore, a noise comparison system 19 is fixedly connected inside the first lifting frame 7. The noise comparison system 19 mainly consists of a signal storage module, an information processing module, a comparison analysis module, and a display module. The collected noise is transmitted to the noise comparison system 19 through a data cable. After storage, the filter, analog-to-digital converter, and data information processor in the information processing module perform frequency processing on the collected noise, convert it into an analog signal, and perform calculation processing on the signal. Then, the algorithm engine of the comparison analysis module performs difference comparison on the signal again, and then displays the actual data information through the display module. A sealing top plate 21 is fixedly connected to the top of the first lifting frame 7, so that when the first lifting frame 7 enters the detection box 1, the top of the detection box 1 is sealed.

[0029] When this application embodiment is used:

[0030] When the device is in use, the controller 20 first controls the drive motor 3 to run. The drive motor 3 drives the first bidirectional lead screw 2 to rotate. The rotation of the first bidirectional lead screw 2 engages with the sliding frame 4, causing the sliding frames 4 to move closer together along the first bidirectional lead screw 2. This, in turn, pushes the transmission frame 17 away from each other through the transmission plate 6, thus causing the first lifting frame 7 and the second lifting frame 23 to move away from each other. This allows the first lifting frame 7 to protrude from the top of the detection box 1. At the same time, the rotating frame 8 is unrestricted and can rotate and open to both sides. Then, the second bidirectional lead screw 12 is rotated, and the second bidirectional lead screw 12 engages with the clamping block 13, causing the two clamping blocks 13 to move closer together along the guide rod 11 to fix the noise acquisition module. Then, the data wire of the noise acquisition module is inserted into the limiting clip 9 to limit and fix the wire, and guide it to the other end. Connected to the noise comparison system 19, the second lifting frame 23 protrudes from the bottom of the detection box 1, and the buffer pad 16 contacts the ground. External vibrations are reduced by the buffer pad 16 and then transmitted to the damping shock absorber 14 through the support plate 15. The damping shock absorber 14 further reduces the vibrations. When stored, the controller 20 controls the drive motor 3 to run. The drive motor 3 drives the first bidirectional lead screw 2 to rotate in the opposite direction. The rotation of the first bidirectional lead screw 2 engages with the sliding frame 4, causing the sliding frames 4 to move away from each other along the first bidirectional lead screw 2. This causes the transmission frame 17 to move closer to each other through the transmission plate 6, thereby bringing the first lifting frame 7 and the second lifting frame 23 closer to each other until the first lifting frame 7 and the second lifting frame 23 are hidden inside the detection box 1. The sealing top plate 21 seals the top of the detection box 1.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A noise detection and comparison device, comprising a detection housing (1) and a traveling wheel (22) fixedly installed at the bottom corner of the detection housing (1), characterized in that: The detection box (1) is equipped with a first bidirectional lead screw (2) in the middle of the rotating frame. The first bidirectional lead screw (2) is symmetrically threaded with two sliding frames (4). Both ends of the two sliding frames (4) are symmetrically equipped with connecting columns (5). A drive motor (3) is fixedly installed on one side of the detection box (1). A controller (20) is electrically connected to one side of the drive motor (3). The output end of the drive motor (3) is fixedly connected to one end of the first bidirectional lead screw (2). A noise collection device mounting assembly is driven and connected to the top of the inside of the detection box (1). A shock absorption assembly is slidably connected to the bottom of the inside of the detection box (1).

2. The noise detection and comparison device according to claim 1, characterized in that: The noise collection device mounting assembly includes a first lifting frame (7), which is movably snapped into the top of the inside of the detection box (1). Rotating frames (8) are symmetrically rotatably connected to both sides of the first lifting frame (7). Mounting frames (10) are fixedly connected to the ends of the two rotating frames (8) that are far apart from each other. Two guide rods (11) are symmetrically fixedly connected inside the two mounting frames (10). A second bidirectional screw (12) is rotatably connected between the two guide rods (11). Two clamping blocks (13) are symmetrically threaded to the body of the second bidirectional screw (12). The two clamping blocks (13) are penetrated by the guide rods (11) and can move along the guide rods (11).

3. The noise detection and comparison device according to claim 2, characterized in that: One end of the second bidirectional lead screw (12) extends through one side wall of the mounting bracket (10), and the other end of the second bidirectional lead screw (12) is connected to the other side wall of the mounting bracket (10) through a seated bearing.

4. The noise detection and comparison device according to claim 2, characterized in that: The rotating frame (8) is fixedly connected to the top of the limit clamps (9) at equal intervals. The first lifting frame (7) has storage slots (18) on both sides. The limit clamps (9) match the storage slots (18).

5. The noise detection and comparison device according to claim 1, characterized in that: The shock absorption assembly includes a second lifting frame (23), which is slidably mounted on the bottom of the detection box (1). Damping shock absorbers (14) are fixedly installed on the four corners of the bottom surface of the second lifting frame (23). A support plate (15) is fixedly connected to one end of the four damping shock absorbers (14) away from the second lifting frame (23). A buffer pad (16) is fixedly installed at the bottom of the support plate (15).

6. The noise detection and comparison device according to claim 5, characterized in that: The top of the second lifting frame (23) and the bottom of the first lifting frame (7) are both fixedly connected to a transmission frame (17). The two transmission frames (17) are symmetrically connected to two transmission plates (6) inside. The four transmission plates (6) are symmetrically connected to the ends of the two connecting columns (5).

7. The noise detection and comparison device according to claim 2, characterized in that: The first lifting frame (7) is internally fixedly connected to a noise comparison system (19), and the top of the first lifting frame (7) is fixedly connected to a sealing top plate (21).

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