Sound wave transmittance measuring instrument

Abstract

The utility model relates to the technical field of sound wave transmittance measurement, in particular to a sound wave transmittance measuring instrument, which comprises a bottom plate and a sound wave transmitting device, a sound wave receiving device is mounted at the top of the bottom plate, a bearing plate is welded on the front side of the bottom plate, and a screw rod is welded in the middle of the top of the bearing plate. A fixing plate is welded to the front side of the sound wave emitting device, a threaded sleeve is movably installed on the fixing plate and is in meshed connection with the lead screw, positioning holes are symmetrically formed in the positions, on the two sides of the threaded sleeve, of the fixing plate, and air cylinders are installed on the two sides of the top of the sound wave receiving device. The device has the advantage that the distance between the sound wave transmitting device and the material and the distance between the sound wave receiving device can be conveniently adjusted by a worker according to actual conditions.

Description

Technical Field

[0001] This utility model relates to the field of acoustic transmittance measurement technology, specifically to an acoustic transmittance measuring instrument. Background Technology

[0002] A sound transmittance meter is an instrument used to measure the ability of a material to transmit sound waves. The measurement results reflect the acoustic properties of the material. The basic working principle of a sound transmittance meter is to emit sound wave pulses into the material being tested, allowing the sound waves to pass through the material, and then receive the pulse signals passing through the material. The instrument records information such as the propagation time, waveform, and amplitude of the sound waves in the material. Based on this data, the propagation speed of the sound waves in the material and the energy attenuation of the sound waves can be calculated, thereby evaluating the sound transmittance of the material. In materials science and engineering, it is used to research and develop various acoustic materials, such as sound insulation materials and sound-absorbing materials, to evaluate their sound wave transmission performance. In architectural acoustic design, the sound transmittance of building materials (such as glass and walls) is measured to ensure the sound insulation effect of the building. In industrial production, the transmission of sound waves through materials is measured to detect whether there are defects or damage inside the material. In geological research, sound transmittance measurement is used to evaluate the physical properties and structure of underground media such as rocks.

[0003] Different materials have varying thicknesses. To ensure that sound waves can accurately pass through the material and be effectively received by the receiving device, the distance between the transmitting device and the material, as well as between the material and the receiving device, needs to be adjusted according to the actual thickness of the material. For example, thicker materials may require a greater distance to ensure that the sound waves have a sufficient propagation path, while thinner materials may require a smaller distance to avoid excessive attenuation or reflection of the sound waves during propagation. Current sound wave transmittance measuring instruments are not convenient for staff to adjust the distance between the mechanisms. Utility Model Content

[0004] The purpose of this invention is to provide a sound wave transmittance measuring instrument, which has the advantage of allowing staff to easily adjust the distance between the sound wave emitting device, the material, and the sound wave receiving device according to the actual situation, thus solving the problem that it is inconvenient for staff to adjust the distance between the mechanisms according to the material conditions in a sound wave transmittance measuring instrument.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sound wave transmittance measuring instrument, comprising a base plate and a sound wave emitting device, a sound wave receiving device mounted on the top of the base plate, a bearing plate welded to the front side of the base plate, a lead screw welded to the middle of the top of the bearing plate, a fixing plate welded to the front side of the sound wave emitting device, a screw sleeve movably mounted on the fixing plate, the screw sleeve engaging with the lead screw, positioning holes symmetrically opened on the fixing plates on both sides of the screw sleeve, and cylinders mounted on both sides of the top of the sound wave receiving device.

[0006] When using the acoustic transmittance measuring instrument in this technical solution, a fixed base provides support to the base plate. The material to be measured is placed between two clamping plates, and two cylinders push the two clamping plates to move in opposite directions, clamping and fixing the material. The range of measurement parameters is preset using the controller on the back of the acoustic receiving device and the acoustic emitting device. After setting, the toothed ring is used to rotate the screw sleeve, which rotates and moves on the lead screw. The screw sleeve drives the acoustic emitting device to adjust its position by raising and lowering through the fixed plate. When the fixed plate is raised and lowered, it moves on the two positioning rods through the two positioning holes. After adjusting the acoustic emitting device to a suitable height, the acoustic emitting device emits sound waves, and the acoustic receiving device receives the sound waves passing through the material, thereby measuring the acoustic transmittance of the material.

[0007] Preferably, both the acoustic wave receiving device and the acoustic wave transmitting device are equipped with controllers on their rear sides. The controllers are used to control parameters such as the transmission frequency and power of the acoustic wave transmitting device, as well as the receiving mode and data processing method of the acoustic wave receiving device, to achieve precise control and automated operation of the measurement process, thereby improving the accuracy and efficiency of the measurement.

[0008] Preferably, the acoustic wave receiver and the acoustic wave transmitter are connected by a cable. This cable connection ensures stable signal transmission and interference resistance between the receiver and transmitter, guaranteeing the accuracy and reliability of the measurement data. Especially in complex industrial environments, it effectively avoids potential interference with wireless transmission.

[0009] Preferably, a toothed ring is installed on the outer side of the threaded sleeve below the fixing plate. The toothed ring enables automated adjustment of the position of the acoustic wave emitting device. By using the toothed ring, the rotation of the threaded sleeve can be controlled, thereby achieving precise movement of the acoustic wave emitting device and further improving the accuracy of the measurement.

[0010] Preferably, a baffle is installed on the top of the lead screw, and the outer diameter of the baffle is larger than the inner diameter of the threaded sleeve. The function of the baffle is to prevent the threaded sleeve from falling off when it moves on the lead screw, ensuring that the acoustic wave emitting device remains stably connected to the lead screw during position adjustment, and avoiding measurement interruption or equipment damage caused by the threaded sleeve falling off.

[0011] Preferably, two positioning rods are symmetrically welded to the top of the bearing plates on both sides of the lead screw, and the tops of the two positioning rods pass through two positioning holes. The cooperation between the positioning rods and the positioning holes not only further restricts the movement direction of the acoustic wave emitting device, ensuring its precise movement in the vertical direction, but also withstands a certain lateral force, preventing the acoustic wave emitting device from tilting or displacing due to external forces during the measurement process, thus ensuring the stability of the measurement.

[0012] Preferably, clamping plates are installed at opposite ends of both cylinders, and rubber pads are installed on opposite sides of both clamping plates. The two cylinders can push the two clamping plates to move in opposite directions, and the two clamping plates can apply clamping force to the material to be measured. The rubber pads provide greater friction when clamping the material, preventing the material from slipping and protecting the material surface from scratches by the clamping plates, ensuring the integrity of the material. This is especially suitable for materials with relatively fragile or smooth surfaces.

[0013] Preferably, handles are installed on both sides of the base plate. The handles facilitate the operator's handling and movement of the measuring instrument, improving the portability of the equipment and making it easier to transfer between different measurement sites.

[0014] Preferably, a fixing seat is installed at each of the four corners of the bottom of the base plate, and the fixing seat is perpendicular to the bottom of the base plate. The fixing seat is used to fix the measuring instrument on the workbench or the ground to prevent the entire device from shifting due to external force or vibration during the measurement process, thereby further improving the stability and accuracy of the measurement, which is especially important when long-term continuous measurement is required or when used in environments with large vibrations.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention utilizes a toothed ring and a threaded sleeve. The toothed ring rotates the threaded sleeve, which moves on a lead screw. The threaded sleeve, via a fixed plate, drives the sound wave emitting device to adjust its position by raising and lowering. During this adjustment, the fixed plate moves on two positioning rods through two positioning holes. Once the sound wave emitting device is adjusted to a suitable height, it emits sound waves, which are then received by a sound wave receiving device that passes through the material. This allows for the measurement of the material's sound wave transmittance, facilitating convenient adjustment of the distance between the sound wave emitting device, the material, and the sound wave receiving device by staff based on actual conditions. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention from a first angle;

[0018] Figure 2 This is a two-dimensional structural diagram of the present invention from a second angle;

[0019] Figure 3 This is a three-dimensional structural diagram of the present invention from a third angle;

[0020] Figure 4 This is a schematic diagram of the supporting plate and fixing plate structure of this utility model.

[0021] In the diagram: 1. Base plate; 2. Sound wave receiver; 3. Clamping plate; 4. Cylinder; 5. Sound wave transmitter; 6. Positioning rod; 7. Baffle; 8. Lead screw; 9. Screw sleeve; 10. Fixing plate; 11. Cable; 12. Handle; 13. Fixing base; 14. Rubber pad; 15. Positioning hole; 16. Gear ring; 17. Bearing plate. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0026] Example 1

[0027] like Figures 1-4 As shown, the present invention proposes a sound wave transmittance measuring instrument, including a base plate 1 and a sound wave emitting device 5. A sound wave receiving device 2 is installed on the top of the base plate 1. Controllers are installed on the rear sides of both the sound wave receiving device 2 and the sound wave emitting device 5. The sound wave receiving device 2 and the sound wave emitting device 5 are connected by a cable 11. A bearing plate 17 is welded to the front side of the base plate 1. A lead screw 8 is welded to the middle of the top of the bearing plate 17. A fixing plate 10 is welded to the front side of the sound wave emitting device 5. A screw sleeve 9 is movably installed on the fixing plate 10. A toothed ring 16 is installed on the outer side of the screw sleeve 9 below the fixing plate 10. The screw sleeve 9 is engaged with the lead screw 8. Cylinders 4 are installed on both sides of the top of the sound wave receiving device 2. Clamping plates 3 are installed on the opposite ends of the two cylinders 4. Rubber pads 14 are installed on the opposite sides of the two clamping plates 3. Handles 12 are installed on both sides of the base plate 1. Fixing seats 13 are installed at the four corners of the bottom of the base plate 1. The fixing seats 13 are perpendicular to the bottom of the base plate 1.

[0028] In this embodiment, the base plate 1 is supported by the fixed seat 13. The material to be measured is placed between the two clamping plates 3. The two cylinders 4 push the two clamping plates 3 to move in opposite directions. The two clamping plates 3 clamp and fix the material. The range of measurement parameters is set in advance by the controller on the back of the sound wave receiving device 2 and the sound wave emitting device 5. After the setting is completed, the screw sleeve 9 is rotated by the toothed ring 16. The screw sleeve 9 rotates and moves on the lead screw 8. The screw sleeve 9 drives the sound wave emitting device 5 to adjust its position by raising and lowering through the fixed plate 10. After the sound wave emitting device 5 is adjusted to a suitable height, the sound wave emitting device 5 emits sound waves. The sound wave receiving device 2 receives the sound waves passing through the material, thereby measuring the sound wave transmittance of the material.

[0029] Example 2

[0030] like Figures 1-4 As shown, the acoustic transmittance measuring instrument proposed in this utility model, compared with the first embodiment, further includes: a positioning rod 6 and a baffle 7. The baffle 7 is installed on the top of the lead screw 8. The outer diameter of the baffle 7 is larger than the inner diameter of the screw sleeve 9. The fixing plates 10 on both sides of the screw sleeve 9 are symmetrically provided with positioning holes 15. Two positioning rods 6 are symmetrically welded to the top of the bearing plates 17 on both sides of the lead screw 8. The tops of the two positioning rods 6 pass through the two positioning holes 15.

[0031] In this embodiment, when the fixing plate 10 moves, it moves on the positioning rod 6 through the positioning hole 15. The cooperation between the positioning rod 6 and the positioning hole 15 not only further restricts the movement direction of the acoustic wave emitting device 5, ensuring that it moves accurately in the vertical direction, but also can withstand a certain lateral force, preventing the acoustic wave emitting device 5 from tilting or displacing due to external force during the measurement process, thus ensuring the stability of the measurement. The function of the baffle 7 is to prevent the screw sleeve 9 from falling off when it moves on the lead screw 8, ensuring that the acoustic wave emitting device 5 is always stably connected to the lead screw 8 during the adjustment of its position, and avoiding measurement interruption or equipment damage caused by the screw sleeve 9 falling off.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A sound transmission class meter comprising a base plate (1) and a sound wave emitting device (5), characterized in that: The bottom plate (1) top-mounted sound wave receiving device (2), the bottom plate (1) front side welding with bearing plate (17), bearing plate (17) top middle welding with screw rod (8), sound wave emitting device (5) front side welding with fixed plate (10), the fixed plate (10) movable mounting with screw sleeve (9), screw sleeve (9) and screw rod (8) meshing connection, screw sleeve (9) both sides of the fixed plate (10) symmetrically opening has positioning hole (15), the sound wave receiving device (2) top both sides are mounted with air cylinder (4).

2. The acoustic transmission measurement instrument according to claim 1, wherein: The sound wave receiving device (2) and sound wave emitting device (5) are installed on the rear side of the controller.

3. The acoustic transmission measurement instrument of claim 1, wherein: The sound wave receiving device (2) and sound wave emitting device (5) are connected through the cable (11).

4. The acoustic transmission measurement instrument of claim 1, wherein: The screw sleeve (9) outside the fixed plate (10) below is installed with gear ring (16).

5. The acoustic transmission measurement instrument of claim 1, wherein: The screw rod (8) top-mounted baffle (7), baffle (7) outside diameter is greater than the inner hole diameter of screw sleeve (9).

6. The acoustic transmission measurement instrument of claim 1, wherein: The screw rod (8) both sides of the bearing plate (17) top symmetrically welded with two positioning rods (6), two positioning rods (6) top through two positioning holes (15).

7. The acoustic transmission measurement instrument of claim 1, wherein: Two air cylinders (4) opposite ends are mounted with clamping plate (3), two clamping plates (3) opposite sides are mounted with rubber pad (14).

8. The acoustic transmission measurement instrument of claim 1, wherein: The bottom plate (1) both sides are mounted with handle (12).

9. The acoustic transmission measurement instrument of claim 8, wherein: The bottom plate (1) bottom four corners are mounted with fixed seat (13), and the fixed seat (13) is perpendicular to the bottom plate (1).

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