A multi-point noise detection device

Abstract

The present invention relates to the field of home appliance detection equipment, and discloses a multi-point noise detection device, which can detect multiple positions around a home appliance device, realize noise measurement at multiple points, and eliminate the need for manual repeated entry into and exit from a soundproof room to adjust and measure the device distance, saving human resources and efficiently improving efficiency. The present invention includes a lifting power mechanism, which includes a first bracket, a first power component, a driving rope, and a second bracket. The first power component is arranged on the first bracket. One end of the driving rope is connected to the first power component, and the other end is connected to the second bracket. The first power component enables the second bracket to move along the Z direction through the driving rope; a first detection mechanism, which includes a third bracket, a second power component, a first sound transmission component, and a second sound transmission component. The third bracket is arranged on the second bracket. The second power component is arranged on the third bracket. The second power component is used to drive the first sound transmission component and the second sound transmission component to move along the Y direction and make the first sound transmission component and the second sound transmission component approach or move away from each other; a second detection mechanism, which includes a fourth bracket, a third power component, a third sound transmission component, and a fourth sound transmission component. The fourth bracket is arranged on the second bracket. The third power component is arranged on the third bracket. The third power component is used to drive the third sound transmission component and the fourth sound transmission component to move along the X direction and make the third sound transmission component and the fourth sound transmission component approach or move away from each other.

Description

Technical Field

[0001] The present invention relates to the field of household appliance detection equipment, in particular to a multi-point noise detection equipment. Background Art

[0002] In the detection units of household appliance enterprises or third-party household appliance testing institutions, for numerous test laboratories and continuous test samples, during the operation stage of the electromechanical structure of household appliances, noise usually appears. The noise level of household appliances has an important impact on the quality requirements of the equipment. Currently, the detection of object noise can only be carried out manually. In a soundproof room, according to the noise measurement standard of the hexahedron in the "Mechanical Industry Standard of the People's Republic of China JB / T4330-1999", the noise of the household appliances on the hexahedron is measured through nine points at specified positions. Since the sizes of each household appliance are different, it is necessary to manually measure the distance from each point to the household appliance and then measure the noise level. For some high points, tools are also needed to measure the noise manually. After each point is tested, it is necessary to manually repeat the measurement and adjust the distance, which greatly affects the efficiency. Under such harsh conditions, the quality and efficiency of the test cannot be guaranteed. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a multi-point noise detection equipment, which can detect multiple positions around a household appliance, realize the noise measurement at multiple points, eliminate the need for manual repeated entry into the soundproof room to adjust and measure the equipment distance, save human resources, and improve the efficiency significantly.

[0004] On the one hand, the multi-point noise detection equipment according to the embodiment of the present invention includes:

[0005] A lifting power mechanism, including a first bracket, a first power member, a driving rope, and a second bracket. The first power member is arranged on the first bracket. One end of the driving rope is connected to the first power member, and the other end is connected to the second bracket. The first power member moves the second bracket along the Z direction through the driving rope.

[0006] A first detection mechanism, including a third bracket, a second power member, a first sound transmission component, and a second sound transmission component. The third bracket is arranged on the second bracket. The second power member is arranged on the third bracket. The second power member is used to drive the first sound transmission component and the second sound transmission component to move along the Y direction and make the first sound transmission component and the second sound transmission component approach or separate from each other.

[0007] The second detection mechanism includes a fourth bracket, a third power member, a third sound transmission assembly, and a fourth sound transmission assembly. The fourth bracket is provided on the second bracket, and the third power member is provided on the fourth bracket. The third power member is configured to drive the third sound transmission assembly and the fourth sound transmission assembly to move along the X direction and to move the third sound transmission assembly and the fourth sound transmission assembly closer to or farther away from each other.

[0008] According to some embodiments of the present invention, it further includes a fifth sound transmission assembly and a sixth sound transmission assembly. The fifth sound transmission assembly can move along the X-axis direction with the third sound transmission assembly and can move closer to or farther away from the third sound transmission assembly along the Y direction. The sixth sound transmission assembly can move along the X-axis direction with the fourth sound transmission assembly and can move closer to or farther away from the fourth sound transmission assembly along the Y direction.

[0009] According to some embodiments of the present invention, the first detection mechanism further includes a first transmission belt and a second transmission belt. The second power member is provided with a first driving wheel and a second driving wheel. The second power member drives the first driving wheel and the second driving wheel to rotate coaxially. The first driving wheel is in transmission connection with the first sound transmission assembly through the first transmission belt, and the second driving wheel is in transmission connection with the second sound transmission assembly through the second transmission belt.

[0010] According to some embodiments of the present invention, it further includes a wall surface. The wall surface is provided below the second bracket and is configured to abut against the product to be tested.

[0011] According to some embodiments of the present invention, the first bracket is detachably mounted on the side wall or the top of the sound insulation chamber.

[0012] According to some embodiments of the present invention, it further includes a fifth bracket. The fifth bracket extends along the Z direction and is configured to connect the top of the sound insulation chamber. The middle part of the driving rope is connected to the fifth bracket.

[0013] According to some embodiments of the present invention, the fifth bracket includes a plurality of suspension brackets. The plurality of suspension brackets are distributed above the second bracket. The driving rope extends from the first power member and is guided by the plurality of suspension brackets so that the driving rope can be connected to the second bracket.

[0014] According to some embodiments of the present invention, there are a plurality of driving ropes, and the driving ropes correspondingly connect the support points of the second bracket.

[0015] According to some embodiments of the present invention, pulleys are provided on the suspension brackets, and the middle part of the driving rope is connected to the pulleys.

[0016] According to some embodiments of the present invention, the second bracket is formed by splicing a plurality of connecting rods.

[0017] The embodiments of the present invention have at least the following beneficial effects:

[0018] According to the embodiments of the present invention, by setting like this, at least the following effects can be achieved. The lifting power mechanism drives the movement of the second bracket through the driving rope, so that the second bracket moves along the Z direction. Rope drive is a mechanical drive that transmits power and motion by the friction between the rope tightly wound around the sheave and the sheave. Through the guidance of the driving rope, most of the rope part of the driving rope can be stored in the sheave of the first power member. By driving the second bracket to move a longer distance with a smaller power structure, it requires less space in terms of space, and is suitable for installing the multi-point noise detection device in a narrow soundproof room and being able to move along the Z direction with sufficient space in the soundproof room; the first sound transmission components and the second sound transmission components of the first detection mechanism adjust their positions in the Y direction through the second power member. The first sound transmission components and the second sound transmission components are used to detect the noise state at their positions; the third sound transmission components and the fourth sound transmission components of the second detection mechanism adjust their positions in the Z direction through the second power member. The sound transmission components are used to detect the noise state at their positions. By a single power member, two sound transmission components can be driven to move simultaneously, and the noise conditions at different positions in the X and Y directions can be detected. By comparing the data obtained by this device with the previously recorded data, the manpower can be greatly reduced, and the operation process can be optimized and simplified; for the same product, there is no need for manual repeated adjustment of dimensions, the measurement range is large, the moving position is accurate, the test process does not require manual intervention beside, and there is no need to repeatedly enter the soundproof room. Remote operation on the computer terminal is sufficient; the operation is convenient and efficient, the test process is simplified. Only need to place the device to be detected at the central position designated by the device, input the overall size of the device to be detected on the computer terminal, and the device will automatically move to the measurement location to achieve six-point azimuth noise measurement. There is no need for manual repeated entry into the anechoic chamber to adjust and measure the distance between the devices, saving human resources and improving efficiency effectively. For devices of the same size, the detection is only more efficient and convenient. It has the characteristics of large compatibility and wide range. The x+ and x- microphones that can move along the x-axis can be adjusted separately, moving closer to or away from the center of the device to be tested at the same time. The +y1, +y2, +y3, -y1, -y2, and -y3 microphones that can move along the y-axis can also be adjusted separately, moving closer to or away from the center of the device at the same time. When the size of the object to be measured is relatively large, the position of the fixed lifting bracket can also be manually adjusted to greatly increase the test distance. And the computer terminal can record the changes in the noise levels of the object to be measured at different azimuths, different powers, and different time periods through the microphones. The overall structure is light and convenient for maintenance.

[0019] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of embodiments in conjunction with the accompanying drawings, where:

[0021] Figure 1 It is a schematic diagram of the six-point detection structure state of the multi-point noise detection device according to an embodiment of the present invention;

[0022] Figure 2 is Figure 1 A schematic diagram of the lifting power mechanism of the multi-point noise detection device shown;

[0023] Figure 3 is Figure 1 A schematic diagram of the first detection mechanism of the multi-point noise detection device shown;

[0024] Figure 4 is Figure 1 A schematic diagram of the second detection mechanism of the multi-point noise detection device shown;

[0025] Figure 5 is Figure 1 A schematic diagram of the nine-point detection structure state of the multi-point noise detection device shown.

[0026] Reference numerals:

[0027] Lifting power mechanism 100, first bracket 110, first power member 120, drive rope 130, second bracket 140;

[0028] First detection mechanism 200, third bracket 210, second power member 220, first sound transmission assembly 230, first position adjustment frame 231, first microphone 232, gear 233, rack, second sound transmission assembly 240, second position adjustment frame 241, second microphone 242, scale 243, first transmission belt 260, second transmission belt 270;

[0029] Second detection mechanism 300, fourth bracket 310, third power member 320, third sound transmission assembly 330, fourth sound transmission assembly 340, fifth sound transmission assembly 350, sixth sound transmission assembly 360;

[0030] Wall surface 400;

[0031] Fifth bracket 500, pulley 510. Detailed embodiments

[0032] The following content will describe several embodiments of the present invention, including the embodiments corresponding to the drawings. It can be understood that the drawings are used to assist in understanding the technical features and technical solutions of the present invention, and should not be construed as limiting the protection scope of the present invention.

[0033] The concept, specific structure and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments and the drawings, so as to fully understand the purpose, solution and effects of the present invention. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0034] It should be noted that unless otherwise clearly defined, when a feature is referred to as "fixed", "connected", "installed", "set" to another feature, it can be directly "fixed", "connected", "installed", "set" to another feature, or indirectly "fixed", "connected", "installed", "set" to another feature. The words such as "fixed", "connected", "installed", "set" should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0035] It should be noted that the descriptions of the orientation or positional relationship indicated by up, down, left, right, top, bottom, front, back, inside, outside, etc. in the present invention are based on the orientation or positional relationship of the drawings or embodiments, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0036] It should be noted that the term "and / or" used in the present invention includes any combination of one or more of the related listed items. The meaning of several is one or more, and the meaning of multiple is at least two. Understandings such as greater than, less than, exceeding, etc. do not include the present number, and understandings such as above, below, within, etc. include the present number.

[0037] It should be noted that if the first and second are described in the present invention, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0038] It should be noted that unless otherwise clearly defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art of this technology. The terms used in the description of this specification are only for describing specific embodiments, rather than for limiting the present invention.

[0039] On the one hand, referring to Figures 1-5 , the multi-point noise detection device according to the embodiment of the present invention includes:

[0040] The lifting power mechanism 100 includes a first bracket 110, a first power component 120, a driving rope 130, and a second bracket 140. The first power component 120 is arranged on the first bracket 110. One end of the driving rope 130 is connected to the first power component 120, and the other end is connected to the second bracket 140. The first power component 120 moves the second bracket 140 along the Z direction through the driving rope 130;

[0041] The first detection mechanism 200 includes a third bracket 210, a second power component 220, a first sound transmission component 230, and a second sound transmission component 240. The third bracket 210 is arranged on the second bracket 140. The second power component 220 is arranged on the third bracket 210. The second power component 220 is used to drive the first sound transmission component 230 and the second sound transmission component 240 to move along the Y direction and make the first sound transmission component 230 and the second sound transmission component 240 approach or move away from each other;

[0042] The second detection mechanism 300 includes a fourth bracket 310, a third power component 320, a third sound transmission component 330, and a fourth sound transmission component 340. The fourth bracket 310 is arranged on the second bracket 140. The third power component 320 is arranged on the third bracket 210. The third power component 320 is used to drive the third sound transmission component 330 and the fourth sound transmission component 340 to move along the X direction and make the third sound transmission component 330 and the fourth sound transmission component 340 approach or move away from each other.

[0043] According to an embodiment of the present invention, by setting it in this way, at least the following effects can be achieved. The lifting power mechanism 100 drives the movement of the second bracket 140 through the driving rope 130, causing the second bracket 140 to move in the Z direction. Rope drive is a mechanical drive that transmits power and motion by the friction between the rope tightly wound around the sheave and the sheave. Through the guidance of the driving rope 130, most of the rope part of the driving rope 130 can be stored in the sheave of the first power member 120. By driving the second bracket 140 to move a longer distance with a smaller power structure, it requires less space in terms of space, and is suitable for installing multi-point noise detection equipment in a narrow soundproof room and being able to move along the Z direction with sufficient space in the soundproof room; the first sound transmission component 230 and the second sound transmission component 240 of the first detection mechanism 200 adjust their positions in the Y direction through the second power member 220, and the first sound transmission component 230 and the second sound transmission component 240 are used to detect the noise state at their positions,; the third sound transmission component 330 and the fourth sound transmission component 340 of the second detection mechanism 300 adjust their positions in the Z direction through the second power member 220. The sound transmission components are used to detect the noise state at their positions. By a single power member, two sound transmission components can be driven to move simultaneously, and the noise conditions at different positions in the X and Y directions can be detected. By comparing the data obtained by this device with the previously recorded data, the manpower can be greatly reduced, and the operation process can be optimized and simplified; for the same product, there is no need for manual repeated adjustment of dimensions, the measurement range is large, the moving position is accurate, the test process does not require manual intervention beside, and there is no need to repeatedly enter the soundproof room. Remote operation on the computer terminal is sufficient; the operation is convenient and efficient, the test process is simplified. Only need to place the device to be detected at the central position defined by the device, input the overall size of the device to be detected on the computer terminal, and the device will automatically move to the measurement location to achieve six-point azimuth noise measurement. There is no need for manual repeated entry into the anechoic chamber to adjust and measure the distance between the devices, saving human resources and improving efficiency highly. For devices of the same size, the detection is only more efficient and convenient. It has the characteristics of large compatibility and wide range. The x+ and x- microphones that can move in the x-axis can be adjusted separately, moving closer to or away from the center of the device to be measured simultaneously. The +y1, +y2, +y3, -y1, -y2, and -y3 microphones that can move in the y-axis can also be adjusted separately, moving closer to or away from the device center simultaneously. When the size of the object to be measured is relatively large, the position of the fixed lifting bracket can also be manually adjusted to greatly increase the test distance. And the computer terminal can record the changes in the noise levels at different azimuths, different powers, and different time periods of the object to be measured through the microphones. The overall structure is light and convenient for maintenance.

[0044] It can be understood that the first power member 120, the second power member 220, the third power member 320, etc. are common existing power structures, which can be rotary motors, rotary cylinders, telescopic motors, etc.

[0045] It can be understood that the device to be tested is mainly detected in two cases. In the first case, when the device to be tested is against the wall, six points of the device to be tested need to be detected, namely the upper, left, right, front, left front, and right front of the device to be tested. The corresponding components of this device are the second sound transmission component 240, the third sound transmission component 330, the fourth sound transmission component 340, the first sound transmission component 230, the fifth sound transmission component 350, and the sixth sound transmission component 360 in sequence. In the second case, when the device to be tested is not against the wall and stands independently in the soundproof chamber, nine points of the device to be tested need to be detected, namely the upper, left, right, front, left front, right front, rear, left rear, and right rear of the device to be tested. The corresponding components of this device are the second sound transmission component 240, the third sound transmission component 330, the fourth sound transmission component 340, the first sound transmission component 230, the fifth sound transmission component 350, the sixth sound transmission component 360, the seventh sound transmission component, the eighth sound transmission component, and the ninth sound transmission component in sequence.

[0046] It can be understood that a single first power member 120 can drive multiple drive ropes 130 to operate simultaneously; multiple first power members 120 can be provided, and one first power member 120 drives one drive rope 130.

[0047] In some embodiments, the first detection mechanism 200 further includes a seventh sound transmission component, and the seventh sound transmission component can move along the Y direction.

[0048] In some embodiments, a fifth sound transmission component 350 and a sixth sound transmission component 360 are further included. The fifth sound transmission component 350 can move along the X-axis direction with the third sound transmission component 330 and can move closer to or away from the third sound transmission component 330 along the Y direction. The sixth sound transmission component 360 can move along the X-axis direction with the fourth sound transmission component 340 and can move closer to or away from the fourth sound transmission component 340 along the Y direction. The third sound transmission component 330 and the fourth transmission component can move along the X direction. The fifth sound transmission component 350 moves with the third sound transmission component 330 and has a certain distance from the third sound transmission component 330, so that the fifth sound transmission component 350 and the third sound transmission component 330 can measure the noise conditions at different positions. The fifth sound transmission component 350 is mainly used to detect the noise between the X and Y axis angles of the product to be tested. The structure and principle of the sixth sound transmission component 360 and the fourth sound transmission component 340 are the same as those of the former.

[0049] In some embodiments, an eighth sound transmission component and a ninth sound transmission component are further included. The eighth sound transmission component can move along the X-axis direction with the third sound transmission component 330 and can move closer to or away from the third sound transmission component 330 along the Y direction. The sixth sound transmission component 360 can move along the X-axis direction with the ninth sound transmission component and can move closer to or away from the fourth sound transmission component 340 along the Y direction. The principle and structure are the same as those of the fifth sound transmission component 350 and the sixth sound transmission component 360, and they are arranged at positions relative to the X-axis direction.

[0050] In some embodiments, the first detection mechanism 200 further includes a first transmission belt 260 and a second transmission belt 270. The second power member 220 is provided with a first driving wheel and a second driving wheel. The second power member 220 drives the first driving wheel and the second driving wheel to rotate coaxially. The first driving wheel is in transmission connection with the first sound transmission component 230 through the first transmission belt 260, and the second driving wheel is in transmission connection with the second sound transmission component 240 through the second transmission belt 270. The second power member 220 is provided with a first driving wheel and a second driving wheel. By using a single power member, the positions of the two sound transmission components can be adjusted, and it can be set how many distances are measured at intervals, and how long to measure at one position before going to the next measurement point. The system will, according to the input instructions, automatically plan the route and time to reach the specified position to measure and record the noise magnitude of the device under test. It is also possible to manually fine-tune the moving distance at the computer terminal, remotely or manually adjust the power, gear position and mode of the device under test, and then press the re-test button. The system will record and compare the data of one cycle recorded previously with the data recorded later.

[0051] In some embodiments, the transmission efficiency of the first driving wheel is greater than or equal to the transmission efficiency of the second driving wheel. The movement range of the first sound transmission component 230 is greater than the movement range of the second sound transmission component 240. The fact that the transmission efficiency of the first driving wheel is greater than or equal to the transmission efficiency of the second driving wheel is beneficial to the detection efficiency.

[0052] Further, the transmission efficiency ratio of the first driving wheel to the second driving wheel is 2:1.

[0053] In some embodiments, the first sound transmission component 230 includes a first position adjustment frame 231 and a first microphone 232. The first position adjustment frame 231 is provided on the second bracket 140, and the first microphone 232 is provided on the first position adjustment frame 231. The first microphone 232 can move along the Z direction of the first position adjustment frame 231. The first microphone 232 can move along the Z direction of the first position adjustment frame 231, so that the first microphone 232 can be adjusted to a suitable height for detection. The data of one cycle recorded previously and the data recorded later are recorded and compared together, and a table will be automatically generated and fed back for display on the computer terminal, effectively improving the detection efficiency.

[0054] In some embodiments, among the first position adjustment frame 231 and the first microphone 232, one is provided with a gear 233, and the other is provided with a rack 234. The gear 233 and the rack are engaged. By driving the gear 233 to rotate, the first microphone 232 can be moved along the Z direction of the first position adjustment frame 231. By driving the gear 233 with a power member to adjust the height of the first microphone 232, manual handling is not required, improving the detection efficiency.

[0055] In some embodiments, the second sound transmission component 240 includes a second positioning frame 241 and a second microphone 242. The second positioning frame 241 is disposed on the second bracket 140, and the second microphone 242 is disposed on the second positioning frame 241. The second microphone 242 can move along the Y direction of the second positioning frame 241. The second microphone 242 can move along the Y direction of the first positioning frame 231, so that the second microphone 242 can be adjusted to a suitable position for detection.

[0056] In some embodiments, a scale 243 is provided on the second positioning frame 241, and the second microphone 242 can slide along the scale 243. Before use, the second microphone 242 can be adjusted to a suitable position for detection.

[0057] It can be understood that the first to ninth sound transmission components can all adjust their orientations in the above two ways of the first sound transmission component 230 and the second sound transmission component 240.

[0058] In some embodiments, a wall surface 400 is further included. The wall surface 400 is disposed below the second bracket 140, and the wall surface 400 is used to support the product to be tested. The wall surface 400 is used to simulate the situation where the device is against the wall. When the device to be tested is against the wall, six points of the device to be tested need to be detected, namely the upper, left, right, front, left front, and right front of the device to be tested. The corresponding components of this device are the second sound transmission component 240, the third sound transmission component 330, the fourth sound transmission component 340, the first sound transmission component 230, the fifth sound transmission component 350, and the sixth sound transmission component 360 in sequence.

[0059] In some embodiments, the first bracket 110 extends along the Z direction or the Y direction. The first bracket 110 is used to connect the side wall or the top of the sound insulation chamber. Through the extended first bracket 110, the first power component 120 can be fixed inside the sound insulation chamber. Connecting the side wall or the top of the sound insulation chamber is beneficial to saving internal space.

[0060] In some embodiments, the first bracket 110 is detachably mounted on the side wall or the top of the sound insulation chamber. It is convenient to disassemble the entire device and replace it with other test devices for easy use.

[0061] In some embodiments, a fifth bracket 500 is further included. The fifth bracket 500 extends along the Z direction. The fifth bracket 500 is used to connect the top of the sound insulation chamber, and the middle of the driving rope 130 is connected to the fifth bracket 500; there are multiple driving ropes 130, and the multiple driving ropes 130 are correspondingly connected to the support points of the second bracket 140. The fifth bracket 500 plays a guiding role for the driving rope 130. The driving rope 130 can start from the first power component 120 and, through the guidance of multiple suspension brackets, enable the driving rope 130 to be connected to each support point of the second bracket 140.

[0062] It can be understood that the support points of the second bracket 140 are distributed at various positions of the second bracket 140, and their combined force can keep the second bracket 140 in balance.

[0063] In some embodiments, the fifth bracket 500 includes a plurality of suspension brackets. The plurality of suspension brackets are distributed above the second bracket 140. The driving rope 130 extends from the first power member 120 and, through the guidance of the plurality of suspension brackets, enables the driving rope 130 to be connected to the second bracket 140. The main function of the suspension bracket is to guide and support the driving rope 130. Some suspension brackets are used to guide the direction of the driving rope 130, and some suspension brackets are disposed directly above the respective support points of the second bracket 140, enabling the second bracket 140 to move along the Z-axis direction.

[0064] In some embodiments, there are a plurality of driving ropes 130, and the driving ropes 130 respectively connect to the support points of the second bracket 140. Each support point is correspondingly connected to one driving rope 130. By pulling the plurality of driving ropes 130, the second bracket 140 can be lifted or lowered simultaneously.

[0065] In some embodiments, pulleys 510 are provided on the suspension brackets, and the middle part of the driving rope 130 is connected to the pulleys 510. The rollers can reduce the friction of the rope drive and prevent the driving rope 130 from being worn.

[0066] In some embodiments, the second bracket 140 is formed by splicing a plurality of connecting rods. The second bracket 140 is formed by splicing connecting rods, and the overall structure is relatively light, facilitating the lifting or lowering of the second bracket 140 by the driving rope 130; the first detection mechanism 200 and the second detection mechanism 300 can be installed on the second bracket 140 in an interspersed manner, effectively reducing the size of the overall structure.

[0067] The above are only the preferred embodiments of the present invention. The present invention is not limited to the above embodiments. As long as it achieves the technical effects of the present invention by the same means, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles disclosed in the present invention shall be included within the scope of protection disclosed in the present invention. All should belong to the scope of protection of the present invention. Within the scope of protection of the present invention, its technical solutions and / or implementation manners can have various different modifications and changes.

Claims

1. A multi-point noise detection device, characterized in that, Comprising: A lifting power mechanism (100), including a first support (110), a first power member (120), a driving rope (130), and a second support. The first power member (120) is disposed on the first support (110). One end of the driving rope (130) is connected to the first power member (120), and the other end is connected to the second support. The first power member (120) moves the second support in the Z direction through the driving rope (130). The first support (110) is detachably mounted on the side wall or the top of the sound insulation chamber. A first detection mechanism (200), including a third support (210), a second power member (220), a first sound transmission component (230), and a second sound transmission component (240). The third support (210) is disposed on the second support. The second power member (220) is disposed on the third support (210). The second power member (220) is used to drive the first sound transmission component (230) and the second sound transmission component (240) to move in the Y direction and to make the first sound transmission component (230) and the second sound transmission component (240) approach or move away from each other. A second detection mechanism (300), including a fourth support (310), a third power member (320), a third sound transmission component (330), and a fourth sound transmission component (340). The fourth support (310) is disposed on the second support. The third power member (320) is disposed on the fourth support (310). The third power member (320) is used to drive the third sound transmission component (330) and the fourth sound transmission component (340) to move in the X direction and to make the third sound transmission component (330) and the fourth sound transmission component (340) approach or move away from each other. It further includes a fifth sound transmission component (350) and a sixth sound transmission component (360). The fifth sound transmission component (350) can move along the X-axis direction with the third sound transmission component (330) and can approach or move away from the third sound transmission component (330) in the Y direction. The sixth sound transmission component (360) can move along the X-axis direction with the fourth sound transmission component (340) and can approach or move away from the fourth sound transmission component (340) in the Y direction. It further includes a fifth support (500). The fifth support (500) extends in the Z direction. The fifth support (500) is used to connect the top of the sound insulation chamber. The middle part of the driving rope (130) is connected to the fifth support (500).

2. The multi-point noise detection device according to claim 1, wherein The first detection mechanism (200) further includes a first transmission belt (260) and a second transmission belt (270). The second power member (220) is provided with a first driving wheel and a second driving wheel. The second power member (220) drives the first driving wheel and the second driving wheel to rotate coaxially. The first driving wheel is in transmission connection with the first sound transmission component (230) through the first transmission belt (260). The second driving wheel is in transmission connection with the second sound transmission component (240) through the second transmission belt (270).

3. The multi-point noise detection device according to claim 1, wherein It further includes a wall surface (400), and the wall surface (400) is disposed below the second bracket. The wall surface (400) is used to abut against the product to be tested.

4. The multi-point noise detection device according to claim 3, wherein The fifth bracket (500) includes a plurality of suspension brackets. The plurality of suspension brackets are distributed above the second bracket. The driving rope (130) is led out from the first power member (120), and through the guidance of the plurality of suspension brackets, the driving rope (130) can be connected to the second bracket.

5. The multi-point noise detection device according to claim 4, characterized in that, A pulley (510) is provided on the suspension bracket, and the middle part of the driving rope (130) is connected to the pulley (510).

6. The multi-point noise detection device according to claim 1, characterized in that, There are a plurality of driving ropes (130), and the driving ropes (130) respectively connect to the support points of the second bracket.

7. The multi-point noise detection device according to claim 1, characterized in that, The second bracket is formed by splicing a plurality of connecting rods.

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