Sound insulation detection device

Abstract

The utility model provides a sound insulation detection device which comprises a protective outer shell and a high-strength sound insulation plate, the high-strength sound insulation plate is fixed on the inner side wall of the protective outer shell, a middle plate is horizontally fixed in the middle of the high-strength sound insulation plate, and the upper end and the lower end in the high-strength sound insulation plate are divided into a receiving cavity and a sound source cavity through the middle plate. According to the design, the problems that a traditional laboratory is provided with a large reverberation chamber and an anechoic chamber, equipment is expensive, large in occupied space, high in cost and inconvenient to carry at the same time are solved, the miniaturized and portable sound insulation detection structure is designed, the sound insulation performance of acoustic materials can be rapidly detected, and the detection efficiency is improved. The device can partially replace the testing function of a traditional large laboratory, the whole device is composed of two independent cavities, namely a sound source cavity and a receiving cavity, a sample clamping structure used for containing a to-be-tested material is arranged between the two independent cavities, the sound source cavity is used for emitting sound waves, and the receiving cavity is used for detecting the sound waves penetrating through the to-be-tested material. The inner wall of the cavity is covered with a sound absorption material to reduce reflection interference.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sound insulation detection device and belongs to the technical field of acoustic material detection equipment. BACKGROUND

[0002] In the fields of building, automobile manufacturing, aerospace, etc., the sound insulation performance of acoustic materials is one of the important indicators for evaluating the quality. At present, the detection of sound insulation performance usually needs to be carried out in a professional acoustic laboratory.

[0003] However, these laboratories are equipped with large reverberation chambers and anechoic chambers, which are expensive and occupy a large space. The testing process is complex and time-consuming. For small and medium-sized enterprises or research institutions, it is difficult to bear the construction and maintenance costs of such laboratories, and it is inconvenient to carry. Therefore, there is an urgent need for a sound insulation detection device to solve the above problems. CONTENT OF THE UTILITY MODEL

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a sound insulation detection device to solve the problems raised in the background art. The utility model designs a miniaturized and portable sound insulation detection structure, which can realize rapid detection of the sound insulation performance of acoustic materials and partially replace the testing function of traditional large laboratories.

[0005] In order to achieve the above purpose, the utility model is implemented by the following technical scheme: a sound insulation detection device, comprising a protective outer shell and a high-strength sound insulation board, the inner side wall of the protective outer shell is fixed with a high-strength sound insulation board, the middle plate is fixed horizontally in the middle of the high-strength sound insulation board, a stepped placing groove is formed in the upper end of the middle plate, the inside of the high-strength sound insulation board is divided into a receiving cavity and a sound source cavity by the middle plate, a second high-precision microphone is arranged through the upper end of the receiving cavity, a first high-precision microphone is arranged through the right side of the sound source cavity, a signal generator is installed at the lower end of the inside of the sound source cavity, a power amplifier is arranged at the upper end of the signal generator, a loudspeaker is arranged at the upper end of the power amplifier, and the loudspeaker is clamped at the stepped placing groove, an embedded processor is arranged at the right end of the protective outer shell through bolts, embedded bearings are arranged at the left and right sides of the upper end of the middle plate, swing rods are movably installed in the embedded bearings, fin plates are fixed horizontally at the front and rear sides of the other ends of the swing rods, fixed blocks are fixed at the lower ends of the fin plates, threaded rods are inserted between the fin plates and the fixed blocks through the screwing principle, and circular resistance pieces are fixed horizontally at the lower ends of the threaded rods.

[0006] Further, a sealed box door is installed on the left side of the front end of the protective outer shell through a hinge.

[0007] Further, the middle plate is made of high-strength sound insulation material.

[0008] Further, the embedded processor is connected with the signal generator, power amplifier, speaker, first high-precision microphone and second high-precision microphone through wires.

[0009] Further, the plurality of circular stop pieces are arranged above the step placement grooves on the left and right sides.

[0010] Further, the protective shell body is provided with a buckle groove at the upper end of the left and right sides.

[0011] The sound insulation detection device has the advantages that: the sound insulation detection device is provided with a high-strength sound insulation board, an intermediate plate, a swing rod, a fin plate, a fixing block, a threaded rod, a circular stop piece, a signal generator, a power amplifier, a speaker, a first high-precision microphone, a second high-precision microphone and an embedded processor, and the device has a reasonable structure and good practicability, and can realize rapid detection of the sound insulation performance of acoustic materials, partially or completely replace the test function of a traditional large laboratory, and is composed of two independent cavities, i.e., a sound source cavity and a receiving cavity, and a sample clamping structure for placing a to-be-detected material is arranged between the two cavities, the sound source cavity is used for emitting sound waves, the receiving cavity is used for detecting sound waves penetrating through the to-be-detected material, and the inner wall of the cavity is covered with sound absorption material to reduce reflection interference. BRIEF DESCRIPTION OF DRAWINGS

[0012] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments, made with reference to the accompanying drawings:

[0013] Fig. 1 Fig. 1 is a perspective view of the overall structure of the sound insulation detection device;

[0014] Fig. 2 Fig. 3 is a closed sealing box door schematic view of the sound insulation detection device;

[0015] Fig. 3 Fig. 5 is a circular stop piece enlarged schematic view of the sound insulation detection device.

[0016] In the figure: 1 is a protective shell body, 2 is a high-strength sound insulation board, 3 is a sound source cavity, 4 is a receiving cavity, 5 is an intermediate plate, 6 is a step placement groove, 7 is an embedded bearing, 8 is a swing rod, 9 is a fin plate, 10 is a fixing block, 11 is a threaded rod, 12 is a circular stop piece, 13 is a signal generator, 14 is a power amplifier, 15 is a speaker, 16 is a first high-precision microphone, 17 is a second high-precision microphone, 18 is an embedded processor, 19 is a buckle groove, and 20 is a sealing box door. DETAILED DESCRIPTION

[0017] In order to make the technical means, creation characteristics, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0018] Please refer to Figs. 1-3 The utility model provides a kind of technical scheme: a sound insulation detection device, including protective shell body 1 and high-strength sound insulation board 2, high-strength sound insulation board 2 is fixed in protective shell body 1 inner side wall, high-strength sound insulation board 2 middle horizontal fixed has intermediate plate 5, intermediate plate 5 upper end is equipped with step placement groove 6, high-strength sound insulation board 2 inside upper and lower end is separated into receiving cavity 4 and sound source cavity 3 by intermediate plate 5, second high-precision microphone 17 is arranged in receiving cavity 4 upper end, first high-precision microphone 16 is arranged in sound source cavity 3 right side, signal generator 13 is installed in sound source cavity 3 inside lower end, power amplifier 14 is provided in signal generator 13 upper end, loudspeaker 15 is provided in power amplifier 14 upper end, and loudspeaker 15 loudspeaker end is arranged in step placement groove 6, protective shell body 1 right end is equipped with embedded processor 18 by bolt, embedded bearing 7 is arranged in intermediate plate 5 upper end left and right sides, swing rod 8 is movably installed in two embedded bearings 7, wing plate 9 is fixed in two swing rods 8 other end front and back sides, a plurality of wing plates 9 are fixed with fixed block 10, a plurality of wing plates 9 and a plurality of fixed blocks 10 are inserted with threaded rod 11 by screwing principle, a plurality of threaded rods 11 lower end are fixed with circular resistance piece 12, this design solves the problem that traditional laboratory is equipped with large reverberation chamber and anechoic chamber, equipment is expensive and occupies large space, cost is high, and inconvenient to carry simultaneously.

[0019] As the first embodiment of the utility model: protective shell body 1 front end left side is equipped with sealed box door 20 by hinge.The intermediate plate 5 is high-strength sound insulation board material, and the intermediate plate 5 is high-strength sound insulation board material by adding, and the material is same with high-strength sound insulation board 2, can provide a relatively closed acoustic environment when sealed box door 20 is closed, reduce external noise interference, ensure the accuracy of test result.

[0020] Embedded processor 18 is connected with signal generator 13, power amplifier 14, loudspeaker 15, first high-precision microphone 16 and second high-precision microphone 17 by wire, signal generator 13 is the core component of sound source module by adding, is used to generate specific frequency and waveform acoustic signal (such as sine wave, pink noise or white noise), the frequency and amplitude of signal generator 13 can be adjusted by embedded processor 18, can simulate the sound source characteristics under different scenes, power amplifier 14 receives the low-power signal output by signal generator 13, and amplifies it to high-power signal enough to drive loudspeaker 15, the sound pressure level in sound source cavity 3 is ensured to reach test requirement after amplification, and loudspeaker 15 converts electrical signal into acoustic signal to generate uniform sound field in sound source cavity 3.

[0021] The multiple circular abutting pieces 12 are arranged above and left and right of the stepped placing groove 6, and the multiple circular abutting pieces 12 can tightly abut the material to be measured placed above the stepped placing groove 6.

[0022] As a second embodiment of the utility model: the material to be measured is horizontally placed in the stepped placing groove 6, and the material to be measured is in contact with the loudspeaker 15, then the multiple threaded rods 11 are screwed, the multiple threaded rods 11 rotate and move downwards at the multiple fin plates 9 and the multiple fixed blocks 10, and then the multiple circular abutting pieces 12 are rotated and moved downwards, until the multiple circular abutting pieces 12 are tightly abutted on the left and right sides of the upper end of the material to be measured, the sealing box door 20 is closed, the embedded processor 18 controls the start of the signal generator 13, the frequency and amplitude of the signal generator 13 are adjusted, the sound source characteristics in a suitable scene are simulated, the power amplifier 14 receives the low-power signal output by the signal generator 13 and amplifies the low-power signal to a high-power signal sufficient to drive the loudspeaker 15, the sound pressure level in the sound source cavity 3 is ensured to reach the test requirement after the signal is amplified, the loudspeaker 15 converts the electrical signal into a sound wave signal, a uniform sound field is generated in the sound source cavity 3, and the sound insulation detection of the material to be measured can be carried out, the first high-precision microphone 16 measures the sound pressure level in the sound source cavity 3 in real time, the second high-precision microphone 17 measures the sound pressure level in the receiving cavity 4 in real time, and the sound pressure level is fed back to the signal generator 13 for display.

[0023] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above, and it is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims instead of the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any figure reference in the claims should not be regarded as limiting the involved claims.

[0024] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A soundproofing detection device comprising a protective outer casing (1) and a high-strength soundproofing panel (2), characterized in that: The high-strength sound insulation plate (2) is fixed to the inner side wall of the protective shell (1), an intermediate plate (5) is fixed horizontally in the middle of the high-strength sound insulation plate (2), a stepped placing groove (6) is formed in the upper end of the intermediate plate (5), and the high-strength sound insulation plate (2) is divided into a receiving cavity (4) and a sound source cavity (3) by the intermediate plate (5) from top to bottom, a second high-precision microphone (17) is arranged in the upper end of the receiving cavity (4), and a first high-precision microphone (16) is arranged in the right side of the sound source cavity (3); A signal generator (13) is installed at the lower end of the sound source cavity (3), a power amplifier (14) is arranged at the upper end of the signal generator (13), a loudspeaker (15) is arranged at the upper end of the power amplifier (14), the loudspeaker (15) is clamped at the stepped placing groove (6), an embedded processor (18) is arranged at the right end of the protective shell (1) through bolts, embedded bearings (7) are arranged at the left and right sides of the upper end of the intermediate plate (5), swing rods (8) are movably installed in the embedded bearings (7), wing plates (9) are fixed horizontally at the front and rear sides of the other ends of the swing rods (8), fixed blocks (10) are fixed at the lower ends of the wing plates (9), threaded rods (11) are inserted between the wing plates (9) and the fixed blocks (10) through the screwing principle, and circular abutting pieces (12) are fixed horizontally at the lower ends of the threaded rods (11).

2. The sound insulation detection device according to claim 1, characterized in that: The sealed box door (20) is installed on the left side of the front end of the protective shell (1) through a hinge.

3. The sound insulation detection device according to claim 1, characterized in that: The intermediate plate (5) is made of high-strength sound insulation material.

4. The sound insulation detection device according to claim 1, characterized in that: The embedded processor (18) is connected to the signal generator (13), the power amplifier (14), the loudspeaker (15), the first high-precision microphone (16) and the second high-precision microphone (17) through wires.

5. The sound detection apparatus of claim 1, wherein: The circular abutting pieces (12) are arranged above and on the left and right sides of the stepped placing groove (6).

6. The sound detection apparatus of claim 1, wherein: The buckle grooves (19) are formed in the upper ends of the left and right sides of the protective shell (1).

Images