Crash sound insulation testing device

Abstract

The utility model relates to the technical field of sound insulation testing, and discloses an impact sound insulation testing device, which comprises a sound insulation box body, a standard floor simulation plate, an acoustic measurement system and an impactor, the top of the sound insulation box body is provided with an opening, the standard floor simulation plate covers the top of the sound insulation box body, the inner side of the sound insulation box body is provided with a fixed support, and the fixed support is provided with an acoustic measurement system. The fixing support comprises a fixing rod, a spring and a fixing sleeve, one end of the fixing rod is fixed to the inner side of the sound insulation box body, the other end of the fixing rod is connected with the fixing sleeve through the spring, the acoustic measurement system comprises a microphone, a displayer and an acoustic measurement module, and the microphone is inserted into the fixing sleeve; the acoustic measurement module is electrically connected with the microphone and the display, the impactor comprises an impact rod and a driving mechanism, one end of the impact rod is arranged above the standard floor simulation plate, the other end of the impact rod is connected with the driving mechanism, and the driving mechanism can drive the impact rod to swing up and down. The testing device is high in testing efficiency and accurate in testing result.

Description

TECHNICAL FIELD

[0001] The utility model relates to sound insulation test technical field especially relates to a kind of impact sound insulation test device. BACKGROUND

[0002] With the acceleration of urbanization, modern urban life in high-rise building, floor sound insulation effect is particularly important. Upper floor impact sound is a problem that disturbs neighborhood harmony, also affects work, rest quality, affects learning efficiency and work efficiency. To effectively solve this problem, new materials that effectively reduce floor impact sound need to be developed and promoted.

[0003] According to GB / T 19889.7-2022, floor impact sound measurement requires a standard test space, and the test sample requires 12-14m 2 . For noise reduction new material research and development institutions and user units, due to space and test sample limitations, it is difficult to quickly and relatively accurately test small-dose samples. Therefore, an impact sound insulation measurement device that can be tested in a small space, has high testing efficiency, low testing cost and accurate testing results is needed. UTILITY MODEL CONTENT

[0004] The utility model solves the technical problem to provide a kind of impact sound insulation measurement device that testing efficiency is high, and testing result is accurate.

[0005] In order to solve the above technical problem, the utility model provides an impact sound insulation test device, which comprises a sound insulation box, a standard floor simulation plate, an acoustic measurement system and an impactor. The top of the sound insulation box is open, the standard floor simulation plate cover is arranged on the top of the sound insulation box, the inner side of the sound insulation box is provided with a fixed support, the fixed support comprises a fixed rod, a spring and a fixed sleeve, one end of the fixed rod is fixed to the inner side of the sound insulation box, the other end of the fixed rod is connected to the fixed sleeve through the spring, the acoustic measurement system comprises a microphone, a display and an acoustic measurement module, the microphone is inserted into the fixed sleeve, the display is arranged outside the sound insulation box, the acoustic measurement module is electrically connected to the microphone and the display, the impactor comprises an impact rod and a driving mechanism, one end of the impact rod is arranged above the standard floor simulation plate, the other end of the impact rod is connected to the driving mechanism, and the driving mechanism can drive the impact rod to swing up and down.

[0006] As a preferred scheme of the utility model, the side of the fixed sleeve is provided with a locking through hole, the locking through hole is threadedly connected with a locking bolt, and the end of the locking bolt abuts against the side of the microphone.

[0007] As a preferred scheme of the utility model, the device further comprises a support, the display is installed at the top of the support, and the driving mechanism is installed on the support.

[0008] As a preferred scheme of the utility model, the driving mechanism comprises a base and a motor installed on the base, the base is installed on the support, one side of the base is provided with a connecting shaft, the connecting shaft is rotationally connected with the middle part of one side of the impact rod, the output shaft of the motor is coaxially connected with a rotating wheel, the rotating wheel is provided with an eccentric shaft, the end of the impact rod away from the sound insulation box is guided through a slot, the slot is arranged along the length direction of the impact rod and is in sliding fit with the eccentric shaft.

[0009] As a preferred scheme of the utility model, the support is arranged at one side of the sound insulation box, and a damping block is connected between the support and the sound insulation box.

[0010] As a preferred scheme of the utility model, one side of the sound insulation box is provided with a level lamp for displaying the intensity of the sound signal, and the level lamp is electrically connected with the acoustic measurement module.

[0011] As a preferred scheme of the utility model, the end of the impact rod above the standard floor simulation plate is provided with an impact ball.

[0012] As a preferred scheme of the utility model, the acoustic measurement module is arranged in the sound insulation box, the side of the sound insulation box is provided with a power socket, and the power socket is electrically connected with the acoustic measurement module.

[0013] As a preferred scheme of the utility model, the inner side of the sound insulation box is paved with sound-absorbing cotton, and the bottom of the sound insulation box is provided with a roller.

[0014] As a preferred scheme of the utility model, the side of the sound insulation box is provided with a switch button, and the switch button is electrically connected with the driving mechanism.

[0015] Compared with the prior art, the impact sound insulation measuring device has the advantages that: the impactor of the utility model can generate impact sound, the acoustic measurement system can measure the acoustic characteristic data of the impact sound, so that the acoustic characteristics of the standard building floor and the generation of the impact sound can be simulated in a small space, the sample test of the sound insulation material is completed, the impact sound insulation data is obtained, and the test efficiency is high; the microphone is arranged on the fixed sleeve, the fixed sleeve is connected with the fixed rod through the spring, the fixed rod is connected with the sound insulation box, when the impact rod knocks the standard floor simulation plate or the sample, the spring can play a buffering and vibration isolation role, the influence of the impact on the microphone is reduced, and the accuracy of the test is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural diagram of the utility model;

[0017] Figure 2 is another angle structural diagram of the utility model;

[0018] Figure 3 is the internal structure diagram of the sound insulation box body of the utility model;

[0019] Figure 4 is the structural diagram of the fixed support of the utility model;

[0020] Figure 5 is the structural diagram of the driving mechanism and the impact rod connection of the utility model;

[0021] In the figure, 1, sound insulation box body;11, fixed support;111, fixed rod;112, spring;113, fixed sleeve;114, locking through hole;12, gyro wheel;13, power socket;14, switch button;2, standard floor simulation board;3, acoustic measurement system;31, microphone;32, display;33, acoustic measurement module;4, impactor;41, impact rod;411, guide through slot;412, impact ball;42, driving mechanism;421, base;422, motor;423, connecting shaft;424, rotating wheel;425, eccentric shaft;5, support;51, damping block;6, level lamp. DETAILED DESCRIPTION

[0022] The specific embodiments of the utility model are described in further detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but are not used to limit the scope of the utility model.

[0023] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like in the utility model is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model to having a particular orientation, being constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model, and in addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0024] As Figures 1-5As shown, the utility model discloses a kind of impact sound sound insulation test devices of preferred embodiment, including sound insulation box 1, standard floor simulation board 2, acoustic measurement system 3 and impactor 4, sound insulation box 1 has good sound insulation effect, can cut off external noise, form a quiet sound receiving space, the top of sound insulation box 1 is open, standard floor simulation board 2 cover is established in the top of sound insulation box 1, standard floor simulation board 2 imitates the acoustic characteristics of 12cm concrete standard floor in GB / T 19889.7-2022, the inboard of sound insulation box 1 is equipped with fixed support 11, fixed support 11 includes fixed rod 111, spring 112 and fixed sleeve 113, one end of fixed rod 111 is fixed in the inboard of sound insulation box 1, the other end of fixed rod 111 is connected with fixed sleeve 113 by spring 112, acoustic measurement system 3 can measure and output acoustic data, acoustic measurement system 3 includes microphone 31, display 32 and acoustic measurement module 33, microphone 31 is inserted in fixed sleeve 113, display 32 is located outside sound insulation box 1, acoustic measurement module 33 is electrically connected with microphone 31 and display 32 respectively, impactor 4 meets the technical requirement of impact sound generating device in GB / T19889.7-2022, impactor 4 includes impact rod 41 and driving mechanism 42, one end of impact rod 41 is located above standard floor simulation board 2, the other end of impact rod 41 is connected with driving mechanism 42, and driving mechanism 42 can drive impact rod 41 to swing up and down.

[0025] The working principle of the embodiment is that: first, control the driving mechanism 42 to make the end of the impact rod 41 away from the driving mechanism 42 swing down and collide with the standard floor simulation board 2, thereby generating an impact sound. At this time, the microphone 31 in the sound insulation box 1 receives the impact sound, and after processing by the acoustic measurement module 33, the acoustic characteristic data (including sound pressure level, etc.) of the impact sound will be displayed in the display 32, which is recorded as the first data. Then, place the sample of sound insulation material on the standard floor simulation board 2, and then control the driving mechanism 42 to make the impact rod 41 collide with the sample to generate an impact sound. At this time, the acoustic characteristic data of the impact sound will be displayed in the display 32, which is recorded as the second data. Finally, by comparing the first data and the second data, the impact sound insulation data of the sample can be obtained. The device can simulate the acoustic characteristics of standard building floor and the occurrence of impact sound in a small space, complete the sample test of sound insulation material, obtain the impact sound insulation data, and has high test efficiency. The microphone 31 in the device is arranged on the fixed sleeve 113, the fixed sleeve 113 is connected with the fixed rod 111 through the spring 112, and the fixed rod 111 is connected with the sound insulation box 1. When the impact rod 41 strikes the standard floor simulation board 2 or the sample, the spring 112 can play a role in buffering and vibration isolation, reducing the impact on the microphone 31, thereby ensuring the accuracy of the test.

[0026] The side of the fixing sleeve 113 is provided with a locking through hole 114, and a locking bolt (not shown in the figure) is threadedly connected to the locking through hole 114. The end of the locking bolt abuts against the side of the microphone 31, so that the microphone 31 is stably inserted on the fixing sleeve 113. The microphone 31 can be pulled out of the fixing sleeve 113 by loosening the locking bolt, and the microphone 31 is convenient to disassemble and assemble.

[0027] In the embodiment, the support 5 is arranged on one side of the soundproof box 1. A damping block 51 is connected between the support 5 and the soundproof box 1. The damping block 51 is made of polyurethane. That is, the support 5 is connected to the soundproof box 1 through the damping block 51, so that the vibration and sound generated when the driving mechanism 42 works are reduced, and the test results are not affected.

[0028] In the embodiment, the support 5 is arranged on one side of the soundproof box 1. A damping block 51 is connected between the support 5 and the soundproof box 1. The damping block 51 is made of polyurethane. That is, the support 5 is connected to the soundproof box 1 through the damping block 51, so that the vibration and sound generated when the driving mechanism 42 works are reduced, and the test results are not affected.

[0029] In the embodiment, the support 5 is arranged on one side of the soundproof box 1. A damping block 51 is connected between the support 5 and the soundproof box 1. The damping block 51 is made of polyurethane. That is, the support 5 is connected to the soundproof box 1 through the damping block 51, so that the vibration and sound generated when the driving mechanism 42 works are reduced, and the test results are not affected.

[0030] In the embodiment, the support 5 is arranged on one side of the soundproof box 1. A damping block 51 is connected between the support 5 and the soundproof box 1. The damping block 51 is made of polyurethane. That is, the support 5 is connected to the soundproof box 1 through the damping block 51, so that the vibration and sound generated when the driving mechanism 42 works are reduced, and the test results are not affected.

[0031] Exemplarily, the acoustic measuring module 33 is arranged in the sound insulation box 1, the acoustic measuring module 33 is connected with the microphone 31, the side of the sound insulation box 1 is provided with the power socket 13, the power socket 13 is electrically connected with the acoustic measuring module 33, the acoustic measuring module 33 is connected with the display 32 through the cable, the cable is sealedly extended from the sound insulation box 1 to the outside, for example, the sealed wire joint is arranged on the side of the sound insulation box 1, the cable is extended to the outside through the sealed wire joint, so that the sound insulation effect of the sound insulation box 1 is ensured.

[0032] Exemplarily, the side of the sound insulation box 1 is provided with the switch button 14, the switch button 14 is electrically connected with the driving mechanism 42, the start and stop of the impactor 4 can be controlled through the switch button 14, so that the operation is facilitated.

[0033] Exemplarily, the inside of the sound insulation box 1 is paved with the sound-absorbing cotton, the sound-absorbing cotton can improve the sound insulation effect of the sound insulation box 1, so that a quiet sound receiving space is formed in the sound insulation box 1, and the measurement accuracy is ensured, the bottom of the sound insulation box 1 is provided with the roller 12, so that the sound insulation box 1 is moved.

[0034] The above only is the preferred embodiment of the present application, it should be pointed out, for ordinary skilled in the art, without departing from the technical principles of the present application, under the premise of still can make a number of improvements and replacement, these improvements and replacement also should be considered as the protection scope of the present application.

Claims

1. A soundproofing test device for impact sound, characterized by: The utility model provides an acoustic test device, including sound insulation box, standard floor simulation board, acoustic measurement system and impact ware, the top of sound insulation box is open, the standard floor simulation board covers the top of sound insulation box, the inboard of sound insulation box is installed with fixed support, fixed support includes fixed rod, spring and fixed sleeve, one end of fixed rod is fixed in the inboard of sound insulation box, the other end of fixed rod is connected with fixed sleeve through spring, acoustic measurement system includes microphone, display and acoustic measurement module, the microphone is inserted in fixed sleeve, the display is located outside sound insulation box, acoustic measurement module is connected with microphone and display electricity respectively, impact ware includes impact rod and drive mechanism, one end of impact rod is located above standard floor simulation board, the other end of impact rod is connected with drive mechanism, drive mechanism can drive impact rod swing up and down.

2. The impact sound transmission test apparatus according to claim 1, characterized by: The side of the fixed sleeve is provided with a locking through hole, and a locking bolt is threadedly connected with the locking through hole.

3. The impact sound transmission test apparatus according to claim 1, characterized by: The display is installed on the top of the support, and the drive mechanism is installed on the support.

4. The impact sound transmission test apparatus according to claim 3, characterized by: The drive mechanism includes a base and a motor installed on the base, the base is installed on the support, one side of the base is provided with a connecting shaft, the connecting shaft is rotationally connected with a middle part of one side of the impact rod, a rotating wheel is coaxially connected with an output shaft of the motor, an eccentric shaft is arranged on the rotating wheel, an end of the impact rod away from the sound insulation box is guided through a through slot, the through slot is arranged along the length direction of the impact rod and is in sliding fit with the eccentric shaft.

5. The impact sound transmission test apparatus according to claim 3, characterized by: The support is arranged on one side of the sound insulation box, and a damping block is connected between the support and the sound insulation box.

6. The impact sound transmission test apparatus according to claim 1, characterized by: One side of the sound insulation box is provided with a level lamp for displaying the intensity of the sound signal, and the level lamp is electrically connected with the acoustic measurement module.

7. The impact sound transmission test apparatus according to claim 1, characterized by: An end of the impact rod above the standard floor simulation board is provided with an impact ball.

8. The impact sound isolation testing apparatus of claim 1, wherein: The acoustic measurement module is arranged in the sound insulation box, one side of the sound insulation box is provided with a power socket, and the power socket is electrically connected with the acoustic measurement module.

9. The impact sound isolation testing apparatus of claim 1, wherein: The inboard of the sound insulation box is paved with sound-absorbing cotton, and the bottom of the sound insulation box is provided with a roller.

10. The impact sound isolation testing apparatus of claim 1, wherein: One side of the sound insulation box is provided with a switch button, and the switch button is electrically connected with the drive mechanism.

Images