Sound insulation testing device

Abstract

The utility model discloses a sound insulation testing device, which comprises main control equipment and testing equipment, and the testing equipment comprises a testing base, and a fixed testing assembly and a movable testing assembly which are arranged on the testing base. A test piece is placed between the fixed test assembly and the movable test assembly; the fixed test assembly comprises a first barrel, a first sound receiving module arranged on the inner side of the opening end of the first barrel, and a sound generating module arranged on the inner wall of one end opposite to the opening end of the first barrel; the mobile test assembly comprises a second cylinder, a second sound receiving module arranged on the inner side of the opening end of the second cylinder, and a test driving module used for driving the second cylinder to move horizontally. The main control device is electrically connected with the first sound receiving module, the sound generating module, the second sound receiving module and the test driving module. The sound insulation testing device can achieve sound insulation testing work, and is convenient to disassemble and assemble and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of sound insulation performance testing, in particular to a sound insulation testing device. Background Art

[0002] As people's living standards improve, their requirements for the quality of life are also constantly increasing. With the increasing number of environmental noise sources, people have also put forward higher and higher requirements for sound insulation performance. Soundproof glass is a glass product that plays a certain shielding role. At present, the devices used to test the sound insulation performance of glass products include noise generators, filters, power amplifiers, microphones, speakers, sound intensity probes, dual-channel analyzers, computers, sound pressure, sound intensity calibrators, etc. During the test, three samples are randomly selected from the same test piece, and the weight, area and thickness of the test piece are pre-checked before installation; then the test piece is installed in the hole with a positioning strip, and then tightly sealed with elastic glass glue and the excess glue is scraped off, and the test is carried out after curing; by measuring the average sound pressure level in the sound source room, the average sound pressure level in the receiving room and the reverberation time, the formula is finally used to calculate the sound insulation volume of the car glass. However, this professional sound insulation test device has a complex structure and a high construction cost, and it is not possible to quickly install the sound insulation material to the test position, and quickly disassemble it after measurement. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a sound insulation testing device, which can perform sound insulation tests on sound insulation materials of different specifications, has high test accuracy, is easy to disassemble and install, has a simple overall structure and is low in cost.

[0004] In order to solve the above technical problems, the utility model provides a sound insulation testing device, including a main control device and a testing device, the testing device including a test base, a fixed test component and a mobile test component installed on the test base, and a test piece placement area arranged between the fixed test component and the mobile test component, the test piece placement area is used to place the test piece; the fixed test component includes a first cylinder horizontally arranged on the test base, a first sound receiving module arranged on the inner side of the open end of the first cylinder, and a sound producing module arranged on the inner wall of an end opposite to the open end of the first cylinder; the mobile test component includes a second cylinder horizontally arranged on the test base, a second sound receiving module arranged on the inner side of the open end of the second cylinder, and a test driving module for driving the second cylinder to move horizontally; the main control device is electrically connected to the first sound receiving module, the sound producing module, the second sound receiving module and the test driving module, respectively, and the first sound receiving module and the second sound receiving module are both used to abut against the corresponding end faces of the test piece.

[0005] As an improvement of the above solution, a fixed component is provided between the fixed test component and the movable test component, and the fixed component is used to fix the test piece.

[0006] As an improvement of the above-mentioned scheme, the fixing assembly includes a fixing plate, a movable plate and a driving module, and the driving module is connected to the main control device; the fixing plate and the driving module are fixed on the test base, and the end of the fixing plate close to the test piece is flush with the opening end of the first cylinder; the driving module is connected to the movable plate through a driving rod, and is used to drive the movable plate to press the test piece on the fixed plate.

[0007] As an improvement of the above-mentioned scheme, the fixed test component is installed on the test base through a first mounting seat, the mobile test component is installed on the test base through a second mounting seat, and the fixed component is located between the first mounting seat and the second mounting seat; a slide groove portion is provided on the upper portion of the second mounting seat, the test drive module is provided on one side of the slide groove portion, the second cylinder is provided in the slide groove portion, and the test drive module is connected to the second cylinder through a driving rod.

[0008] As an improvement of the above solution, the first sound receiving module and the second sound receiving module both include a sound receiving device and a sound receiving speaker cover installed on the sound receiving end of the sound receiving device, and the cover mouth end of the sound receiving speaker cover is used to abut against the corresponding end of the test piece.

[0009] As an improvement of the above solution, the first sound receiving module and the second sound receiving module are both installed on the inner side of the opening end of the corresponding test tube through an elastic mounting seat.

[0010] As an improvement on the above scheme, a sealing buffer layer is provided on the open end surface of the first cylinder and the open end surface of the second cylinder; a first pressure sensor electrically connected to the main control device is provided in the sealing buffer layer of the first cylinder and / or the sealing buffer layer of the second cylinder.

[0011] As an improvement of the above-mentioned solution, a buffer layer is provided on the end surface of the fixed plate close to the movable plate and the end surface of the movable plate close to the fixed plate; the buffer layer of the fixed plate and / or the buffer layer of the movable plate are both provided with a second pressure sensor electrically connected to the main control device.

[0012] As an improvement of the above solution, the test drive module and the drive module include a telescopic cylinder.

[0013] As an improvement of the above solution, the main control device includes a main controller and a display device and a control panel electrically connected to the main controller.

[0014] The implementation of this utility model has the following beneficial effects:

[0015] The utility model provides a sound insulation testing device which can perform sound insulation testing on sound insulation materials of different specifications, has high testing accuracy, is easy to disassemble and install, has a simple overall structure and is low in cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the sound insulation testing device of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the sound insulation test device of the utility model during testing;

[0018] Figure 3 It is a structural schematic diagram of the radio module of the utility model. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail with reference to the accompanying drawings. It is hereby stated that the directional words such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the utility model are only based on the accompanying drawings of the utility model, and are not specific limitations of the utility model.

[0020] like Figures 1 to 2 As shown, the utility model provides a sound insulation test device, including a main control device 1 and a test device 2, wherein the test device 2 includes a test base 21, a fixed test assembly 22 and a mobile test assembly 23 installed on the test base 21, and a test piece placement area 3 arranged between the fixed test assembly 22 and the mobile test assembly 23, wherein the test piece placement area 3 is used to place test pieces 4 (i.e., sound insulation materials) of different specifications. The fixed test assembly 22 includes a first cylinder 221 horizontally arranged on the test base 21, a first sound receiving module 222 arranged on the inner side of the open end of the first cylinder 221, and a sound producing module 223 arranged on the inner wall of an end opposite to the open end of the first cylinder 221; the mobile test assembly 23 includes a second cylinder 231 horizontally arranged on the test base 21, a second sound receiving module 232 arranged on the inner side of the open end of the second cylinder 231, and a test driving module 233 for driving the second cylinder 231 to move horizontally.

[0021] The main control device 1 is electrically connected to the first sound receiving module 222, the pronunciation module 223, the second sound receiving module 232 and the test drive module 233 through wires. The main control device 1 is preferably a computer device, and the computer device includes a sound card module. The main control device 1 can output different sound signals to the pronunciation module 223 through the sound card module. Among them, the sound signal is preferably a sine signal, a square wave signal, a sawtooth wave signal, a triangle wave signal, a mixed single frequency signal, a basic mixed single frequency signal, a uniform white noise signal, a Gaussian noise signal, a Poisson noise signal, a periodic random noise signal, a binomial distribution noise signal, an inverse power law noise signal, a Camma noise signal or a quantum Bernoulli noise signal. Among them, the pronunciation module 223 is preferably a speaker, and its sound output direction is toward the second cylinder 231.

[0022] During the actual test, the test piece 4 is placed in the test piece placement area 3 and is close to or abuts against the open end of the first cylinder 221. The test drive module 233 is controlled to drive the second cylinder 231 to move along the direction of the first cylinder 221 until the end face of the open end of the second cylinder 231 and the end face of the open end of the first cylinder 221 respectively abut against the corresponding end faces of the test piece 4, and at the same time, the sound receiving ends of the first sound receiving module 222 and the second sound receiving module 232 abut against the corresponding end faces of the test piece 4 to improve the sound receiving test effect. For test pieces 4 of different specifications, the test drive module 233 can be controlled to drive the second cylinder 231 to perform the corresponding sound receiving module abutment work. The first sound receiving module 222 and the second sound receiving module 232 send the sound receiving test signals at both ends of the test piece 4 to the main control device 1, so that the main control device 1 stores and comprehensively analyzes the sound test signals at both ends of the test piece 4, thereby testing the sound insulation performance of the test piece 4, i.e., the sound insulation material. Secondly, when testing the next test piece 4, the sound insulation test processing of multiple test pieces 4 of different specifications can be realized by controlling the test drive module 233 to perform the reset operation and repeating the above processing method.

[0023] Preferably, the main control device 1 includes a main controller and a display device and a control panel electrically connected to the main controller. The sound signal and the sound reception test signal can be displayed by the display device for user monitoring. Different control instructions can be input by the control panel to achieve the same control work, such as controlling the movement of the test drive module 233.

[0024] Preferably, a layer of sound-absorbing material is applied to the inner end surface of the second cylinder 231 to prevent the sound penetrating the test piece 4 from being reflected back to the test piece 4 through the second cylinder 231 during the test, thereby causing a test error. The sound-absorbing material is preferably wave crest sound-absorbing cotton or sound-absorbing wave sponge.

[0025] Preferably, a fixing component 5 is provided between the fixed test component 22 and the movable test component 23, and the fixing component 5 is used to fix the test piece 4 in advance before the test to play a preliminary limiting and fixing role; subsequently, the test tube is clamped by the test drive module 233, thereby improving the abutment effect between the first sound receiving module 222 and the second sound receiving module 232 and the test piece 4, thereby improving the sound receiving test effect.

[0026] Specifically, the fixing assembly 5 includes a fixing plate 51, a moving plate 52 and a driving module 53, and the driving module 53 is connected to the main control device 1; the fixing plate 51 and the driving module 53 are fixed on the test base 21, and the end of the fixing plate 51 close to the test piece 4 is flush with the open end of the first cylinder 221. When the test piece 4 is placed, the test piece 4 can first approach or abut the corresponding ends of the fixing plate 51 and the first cylinder 221. The driving module 53 is connected to the moving plate 52 through a driving rod, and is used to drive the moving plate 52 to press the test piece 4 at the fixing plate 51 to achieve a preliminary limit fixing effect.

[0027] Among them, the fixed test component 22 is installed on the test base 21 through the first mounting seat 24, the mobile test component 23 is installed on the test base 21 through the second mounting seat 25, and the fixed component 5 is located between the first mounting seat 24 and the second mounting seat 25; the upper part of the second mounting seat 25 is provided with a slide groove portion 26, and the test drive module 233 is provided on one side of the slide groove portion 26, and the second cylinder 231 is arranged in the slide groove portion 26, and the test drive module 233 is connected to the second cylinder 231 through a driving rod, which is used to drive the second cylinder 231 to move horizontally in the slide groove portion 26.

[0028] Preferably, the test driving module 233 and the driving module 53 both include but are not limited to telescopic cylinders.

[0029] In order to improve the sound reception effect. Figure 3 As shown, the first sound receiving module 222 and the second sound receiving module 232 both include a sound receiving device 224 and a sound receiving speaker cover 225 installed on the sound receiving end of the sound receiving device 224, and the cover mouth end of the sound receiving speaker cover 225 is used to abut against the corresponding end of the test piece 4. The sound receiving effect is improved by setting the sound receiving speaker cover 225. Wherein, the first sound receiving module 222 and the second sound receiving module 232 are both installed at the middle position inside the opening end of the corresponding test tube through the elastic mounting seat 226, and the elastic effect of the elastic mounting seat 226 is used to further improve the abutment effect and sound receiving effect of the sound receiving module. Wherein, the elastic mounting seat 226 is made of existing elastic material.

[0030] Preferably, the sound receiving device 224 in the first sound receiving module 222 and the second sound receiving module 232 is preferably a microphone.

[0031] Preferably, a sealing buffer layer 6 is provided on the open end surface of the first cylinder 221 and the open end surface of the second cylinder 231; a first pressure sensor 7 electrically connected to the main control device 1 is provided in the sealing buffer layer 6 of the second cylinder 231. A buffer layer 8 is provided on the end surface of one end of the fixed plate 51 close to the movable plate 52 and the end surface of the movable plate 52 close to the fixed plate 51; a second pressure sensor 9 electrically connected to the main control device 1 is provided on the buffer layer 8 of the movable plate 52. The sealing buffer layer 6 and the buffer layer 8 provided can play a buffering role and improve the sealing effect. Among them, the sealing buffer layer 6 and the buffer layer 8 are preferably a rubber sealing layer or a plastic sealing layer. The pressure signal when the test piece 4 is clamped can be tested respectively by the first pressure sensor 7 and the second pressure sensor 9, and the corresponding drive module can be controlled to stop working through the pressure signal to avoid overpressure.

[0032] In summary, the utility model can perform sound insulation tests on sound insulation materials (test pieces) of different specifications, has high test accuracy, is easy to disassemble and install, has a simple overall structure, and is low in cost.

[0033] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the utility model, which are used to illustrate the technical solution of the utility model, rather than to limit it. The protection scope of the utility model is not limited thereto. Although the utility model is described in detail with reference to the above-mentioned embodiments, ordinary technicians in this field should understand that any technician familiar with the technical field can still modify the technical solution recorded in the above-mentioned embodiments within the technical scope disclosed by the utility model, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiment of the utility model, and should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. A sound insulation test device, It is characterized in that The device comprises a main control device and a test device, wherein the test device comprises a test base, a fixed test component and a mobile test component mounted on the test base, and a test piece placement area provided between the fixed test component and the mobile test component, wherein the test piece placement area is used to place the test piece; The fixed test assembly comprises a first cylinder horizontally arranged on the test base, a first sound receiving module arranged inside the open end of the first cylinder, and a sound producing module arranged on the inner wall of an end opposite to the open end of the first cylinder; The mobile test assembly comprises a second cylinder horizontally arranged on the test base, a second sound receiving module arranged inside the open end of the second cylinder, and a test driving module for driving the second cylinder to move horizontally; The main control device is electrically connected to the first sound receiving module, the sound producing module, the second sound receiving module and the test driving module respectively, and the first sound receiving module and the second sound receiving module are both used to abut against the corresponding end surface of the test piece; The mobile test assembly is mounted on the test base via a second mounting seat, a slide groove portion is provided on the upper portion of the second mounting seat, the test drive module is provided on one side of the slide groove portion, the second cylinder is provided in the slide groove portion, and the test drive module is connected to the second cylinder via a drive rod; A sealing buffer layer is provided on the opening end surface of the first cylinder and the opening end surface of the second cylinder; A first pressure sensor electrically connected to the main control device is provided in the sealing buffer layer of the first cylinder and / or the sealing buffer layer of the second cylinder.

2. The sound insulation testing device according to claim 1, It is characterized in that A fixing component is provided between the fixing test component and the moving test component, and the fixing component is used to fix the test piece.

3. The sound insulation testing device according to claim 2, It is characterized in that The fixing assembly includes a fixing plate, a moving plate and a driving module, and the driving module is connected to the main control device; The fixing plate and the driving module are fixed on the test base, and one end of the fixing plate close to the test piece is flush with the open end of the first cylinder; The driving module is connected to the movable plate via a driving rod, and is used to drive the movable plate to press the test piece on the fixed plate.

4. The sound insulation testing device according to claim 3, It is characterized in that The fixed test assembly is mounted on the test base via a first mounting seat, and the fixed assembly is located between the first mounting seat and a second mounting seat.

5. The sound insulation testing device according to claim 1, It is characterized in that The first sound receiving module and the second sound receiving module both include a sound receiving device and a sound receiving speaker cover installed on the sound receiving end of the sound receiving device, and the cover mouth end of the sound receiving speaker cover is used to abut against the corresponding end of the test piece.

6. The sound insulation testing device according to claim 5, It is characterized in that The first sound receiving module and the second sound receiving module are both installed on the inner side of the opening end of the corresponding test tube through an elastic mounting seat.

7. The sound insulation testing device according to claim 3, It is characterized in that A buffer layer is provided on one end surface of the fixed plate close to the movable plate and one end surface of the movable plate close to the fixed plate; The buffer layer of the fixed plate and / or the buffer layer of the movable plate are both provided with a second pressure sensor electrically connected to the main control device.

8. The sound insulation testing device according to claim 4, It is characterized in that The test drive module and the drive module include telescopic cylinders.

9. The sound insulation testing device according to any one of claims 1 to 8, It is characterized in that The main control device includes a main controller and a display device and a control panel electrically connected to the main controller.

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