A thermal insulation composite wall testing device and method

Abstract

The present invention relates to the technical field of thermal insulation composite wall testing, and in particular to a thermal insulation composite wall testing device and method; comprising an equipment rack; a sound insulation board is fixedly installed on the equipment rack, and a testing mechanism is arranged on the sound insulation board; the present invention simulates the actual use state of the thermal insulation composite wall by a rectangular frame structure composed of four thermal insulation composite walls to ensure the accuracy of the test, and then performs a knocking sound insulation test on the wall through a knocking part, and then performs a hygroscopicity test on the wall through a spray part, and finally performs a sound insulation test on the wetted wall again through the knocking part, and improves the accuracy of the sound insulation effect test of the thermal insulation composite wall by testing the sound insulation effect of the wall from multiple aspects, and secondly, the hygroscopicity and sound insulation tests are concentrated on one device, so as to reduce the frequency of movement of the thermal insulation composite wall, thereby improving the overall efficiency of the thermal insulation composite wall test.

Description

Technical Field

[0001] The invention relates to the technical field of thermal insulation composite wall testing, and in particular to a thermal insulation composite wall testing device and method. Background Art

[0002] The thermal insulation composite wall is a building structure that consists of multiple layers of different materials. It is designed to improve the thermal performance of the building, reduce heat loss, and thus achieve energy conservation. In order to simplify the construction process and improve construction efficiency, the thermal insulation composite wall is designed as factory-prefabricated modules or panels. These modules are manufactured in the factory according to specific specifications, and the structural layer, insulation layer, and sometimes the internal and external finishing layers are pre-combined together. This integrated wall assembly can be directly installed after being transported to the construction site. After the thermal insulation composite wall is processed and manufactured, it will be tested for performance such as moisture absorption, sound insulation, and thermal resistance to ensure that it meets the design requirements.

[0003] However, there are currently the following problems in the testing of thermal insulation composite walls: 1. The existing testing method usually performs various performance tests on a single thermal insulation composite wall, but this method is different from the actual application of the thermal insulation composite wall, which leads to the actual performance of the wall failing to meet expectations, thus affecting the overall performance of the building; 2. Each test needs to be tested by a corresponding device, which means that the thermal insulation composite wall needs to be moved back and forth for testing, affecting the test efficiency. Secondly, each test method is relatively simple. For example, the sound insulation test only tests the sound insulation effect of the sound emitted when it is not in contact with the thermal insulation composite wall, which is inconsistent with the actual use scenario and affects the accuracy of the test results. Summary of the invention

[0004] In view of the above problems, the embodiments of the present application provide invention names to solve the above-mentioned technical problems.

[0005] In order to achieve the above-mentioned purpose, the embodiments of the present application provide the following technical solutions: The first aspect of the embodiments of the present application provides a thermal insulation composite wall testing device, including an equipment rack; a sound insulation board is fixedly installed on the equipment rack, and a testing mechanism is arranged on the sound insulation board.

[0006] The testing mechanism includes a soundproof cover, a soundproof cover is placed on the soundproof board, a drainage hole is opened on the soundproof board, and four limit plates located in the inner cavity of the soundproof cover are evenly arranged on the upper end of the soundproof board along the circumference of the drainage hole. The limit plates are L-shaped structures, and the four limit plates pre-fix the rectangular frame structure composed of four walls. Positions on the soundproof board corresponding to the four limit plates are all provided with slide grooves along the radial direction of the drainage hole. The limit plates are slidably installed in the slide groove by a slider, and a compression spring is fixedly installed between the end of the slider away from the drainage hole and the inner wall of the slide groove.

[0007] The soundproof cover is equipped with a knocking part for detecting the sound insulation effect of the sound produced when knocking the wall inside the rectangular frame composed of the walls and when not touching the wall. The soundproof cover is also provided with a spraying part for spraying water on the wall to detect the hygroscopicity and a fixing part for fixing the limit plate.

[0008] The sound insulation board is provided with a lifting part for driving the sound insulation cover to move, and the sound insulation cover and the sound insulation board are respectively provided with measuring components for determining the sound insulation test results and the hygroscopicity test results.

[0009] As a preferred embodiment, the striking part comprises a cylinder, and the cylinder is fixedly installed in the middle of the horizontal section of the sound insulation cover, and the lower end of the cylinder passes through the sound insulation cover, and a plurality of groups of limit assemblies are evenly arranged on the cylinder along its axial direction, and each group of limit assemblies consists of four notches evenly distributed along the circumference of the cylinder, and hammers are rotatably installed in the notches through the shaft column, and striking bells are installed on the outer wall of the cylinder at positions corresponding to the hammers, and a push-pull member for driving the hammers to swing back and forth is provided on the sound insulation cover.

[0010] As a preferred embodiment, the push-pull member includes a spur gear, and the spur gear is fixedly installed on the shaft column, a shaft rod is slidably installed in the cylinder column, a fixed column is fixedly installed on the lower end of the shaft rod, and a rack meshing with the spur gear in a one-to-one correspondence is fixedly installed on the fixed column, and a driving plate located on the front side of the shaft rod is slidably installed on the upper end of the sound insulation cover, and a switching member for switching between the hammer hitting the wall and the hammer hitting the bell is arranged between the driving plate and the shaft rod, and a driving assembly for driving the driving plate to move is arranged on the sound insulation cover.

[0011] As a preferred embodiment, the spray part includes a rectangular water tank, and the rectangular water tank is fixedly installed at the lower end of the horizontal section of the sound insulation cover. The side of the rectangular water tank away from the column is evenly connected with a spray head along its contour, and the upper end of the rectangular water tank is connected with a liquid inlet pipe, and the upper end of the liquid inlet pipe is fixedly passed through the sound insulation cover.

[0012] As a preferred embodiment, the switching member includes a screw hole, the front side of the shaft rod is provided with a screw hole along its radial direction, and the driving plate is provided with an inclined groove corresponding to the screw holes one by one and inclined from the bottom to the upper right, wherein a guide column is threadedly connected to one of the screw holes, and the guide column slides through the corresponding inclined groove.

[0013] As a preferred embodiment, the fixing portion includes a through hole, the upper ends of the longitudinal and transverse sections of the limit plate are provided with through holes, the sound insulation plate is provided with limit holes corresponding to the through holes one by one, and the lower end of the horizontal section of the sound insulation cover is fixedly provided with limit rods corresponding to the through holes one by one, and the limit rods slide through the corresponding through holes into the corresponding limit holes.

[0014] As a preferred embodiment, the lifting part includes a corner cylinder, and the lower end of the sound insulation board is fixedly installed with the corner cylinder. The telescopic section of the corner cylinder movably penetrates the sound insulation board and is fixedly installed with a connecting block, and the connecting block is fixedly connected to the sound insulation cover.

[0015] As a preferred solution, the driving assembly includes a stepper motor, the stepper motor is fixedly mounted on the upper end of the soundproof cover, a turntable is fixedly mounted on the output shaft of the stepper motor, and a connecting rod is hinged between the eccentric position of the turntable and the driving plate.

[0016] As a preferred solution, the measuring assembly includes a decibel meter, the decibel meter is installed on the soundproof cover, and a measuring cup is fixedly installed at the lower end of the soundproof plate at a position coaxial with the drainage hole.

[0017] A second aspect of an embodiment of the present application provides a thermal insulation composite wall testing method, which is completed in cooperation with a thermal insulation composite wall testing device and includes the following steps: S1, pre-fixing a rectangular frame structure composed of four walls and limiting it by a limiting plate.

[0018] S2. The soundproof cover covers the wall and fits with the soundproof board.

[0019] S3. The knocking department performs sound insulation testing on the wall.

[0020] S4. The spraying unit conducts hygroscopicity test on the wall.

[0021] S5. Conduct sound insulation test on the sprayed wall again.

[0022] The above one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects: First, the present invention simulates the actual use state of the thermal insulation composite wall by using a rectangular frame structure composed of four thermal insulation composite walls to ensure the accuracy of the test, and then performs a knocking sound insulation test on the wall through the knocking part, and then performs a hygroscopicity test on the wall through the spray part, and finally performs a sound insulation test on the moistened wall again through the knocking part. By testing the sound insulation effect of the wall from multiple aspects, the accuracy of the sound insulation effect test of the thermal insulation composite wall is improved. Secondly, the hygroscopicity and sound insulation tests are concentrated on one device, which reduces the frequency of movement of the thermal insulation composite wall, thereby improving the overall efficiency of the thermal insulation composite wall test.

[0023] Second, the knocking part provided in the present invention drives the hammer to reciprocate through the push-pull member, and by changing the positions of the screw holes and the inclined grooves matched with the guide column, the sound insulation effects of the two cases where the hammer does not touch the knocking bell but knocks on the wall to produce sound and the hammer does not touch the wall but knocks on the knocking bell to produce sound are achieved; in addition, after the spraying test, the wall is again soundproofed by the knocking part to simulate the sound insulation effect of the wall after rain, and whether the sound insulation effect is qualified is determined by the value change of the decibel meter, so that the comprehensiveness and accuracy of the wall sound insulation test can be guaranteed through the above-mentioned multi-faceted tests.

[0024] 3. The spray part of the present invention sprays water on the wall through the spray head. The water flows through the wall surface and is partially absorbed by the wall, while the unabsorbed part flows into the measuring cup. The remaining water in the measuring cup is observed to determine whether the hygroscopicity of the wall is qualified.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of this application.

[0028] Figure 2 This is a schematic diagram of the structure of the testing organization of this application.

[0029] Figure 3 for Figure 2 A magnified view of the structure in Figure 2.

[0030] Figure 4 This is a schematic diagram of the structure of the spray part of this application.

[0031] Figure 5 This is a schematic diagram of the structure of the fixing part of the present application.

[0032] Figure 6 This is a partial structural cross-sectional view of the present application.

[0033] Reference numerals: 10, equipment rack; 11, soundproof board; 2, testing mechanism; 20, soundproof cover; 200, decibel meter; 21, drainage hole; 210, measuring cup; 22, limit plate; 23, slider; 24, compression spring; 25, striking part; 250, cylinder; 251, hammer; 252, striking bell; 3, push-pull member; 30, spur gear; 31, shaft; 32, fixed column; 33, rack; 3 4. Driving plate; 35. Stepping motor; 36. Turntable; 37. Connecting rod; 4. Switching member; 40. Screw hole; 41. Inclined groove; 42. Guide column; 26. Spraying part; 260. Rectangular water tank; 261. Spraying head; 262. Liquid inlet pipe; 27. Fixing part; 270. Through hole; 271. Limiting hole; 272. Limiting rod; 28. Lifting part; 280. Angle cylinder; 281. Connecting block. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0035] like Figure 1 As shown, a thermal insulation composite wall testing device includes an equipment frame 10; a sound insulation board 11 is fixedly installed on the equipment frame 10, and a testing mechanism 2 is arranged on the sound insulation board 11.

[0036] like Figure 1 , Figure 2 and Figure 4 As shown, the testing mechanism 2 includes a soundproof cover 20, the soundproof cover 20 is placed on the soundproof board 11, a drainage hole 21 is provided on the soundproof board 11, and four limit plates 22 located in the inner cavity of the soundproof cover 20 are evenly arranged along the circumference of the drainage hole 21 at the upper end of the soundproof board 11, and the limit plates 22 are L-shaped. The four limit plates 22 pre-fix the rectangular frame structure composed of four walls, and the positions on the soundproof board 11 corresponding to the four limit plates 22 are radially provided with slide grooves along the drainage hole 21. The limit plates 22 are slidably installed in the slide grooves through sliders 23, and a compression spring 24 is fixedly installed between the end of the slider 23 away from the drainage hole 21 and the inner wall of the slide groove.

[0037] like Figure 1 , Figure 2 and Figure 4As shown, the soundproof cover 20 is equipped with a knocking part 25 for detecting the sound insulation effect of the sound produced in two states: knocking the wall inside the rectangular frame composed of the wall and not contacting the wall. The soundproof cover 20 is also provided with a spray part 26 for detecting the hygroscopicity of spraying water on the wall and a fixing part 27 for fixing the limit plate 22.

[0038] like Figure 1 and Figure 2 As shown, the sound insulation board 11 is provided with a lifting part 28 for driving the sound insulation cover 20 to move, and the sound insulation cover 20 and the sound insulation board 11 are respectively provided with measuring components for determining the sound insulation test and the hygroscopicity test results.

[0039] During the specific work, four walls are manually assembled into a rectangular frame structure and placed on the limiting plates 22. The four limiting plates 22 then contact the corner positions of the rectangular frame formed by the walls to pre-fix it. Then the lifting part 28 drives the sound insulation cover 20 to cover the rectangular frame formed by the walls, and the movement of the limiting plates 22 is limited by the fixing part 27 to ensure the stability of the rectangular frame formed by the walls. Then the knocking part 25 and the spray part 26 perform sound insulation and hygroscopicity tests on the walls, and the test results are judged by the measuring components.

[0040] like Figure 1 and Figure 4 As shown, the lifting part 28 includes a corner cylinder 280, and the lower end of the sound insulation board 11 is fixedly installed with the corner cylinder 280. The telescopic section of the corner cylinder 280 movably penetrates the sound insulation board 11 and is fixedly installed with a connecting block 281. The connecting block 281 is fixedly connected to the sound insulation cover 20.

[0041] like Figure 2 , Figure 4 and Figure 5 As shown, the fixing portion 27 includes a through hole 270, the upper ends of the vertical and horizontal sections of the limiting plate 22 are both provided with a through hole 270, the sound insulation board 11 is provided with a limiting hole 271 corresponding to the through hole 270, and the lower end of the horizontal section of the sound insulation cover 20 is fixedly installed with a limiting rod 272 corresponding to the through hole 270, and the limiting rod 272 slides through the corresponding through hole 270 to the corresponding limiting hole 271.

[0042] During specific operation, the corner cylinder 280 first drives the sound insulation cover 20, which is initially deviated from the drainage hole 21, to rotate ninety degrees so that it is located directly above the drainage hole 21. Then the corner cylinder 280 pulls the sound insulation cover 20 to move vertically downward until the sound insulation cover 20 is in contact with the sound insulation board 11. While the sound insulation cover 20 moves downward, it also drives the limit rod 272 to insert into the through hole 270, and penetrates the through hole 270 to the corresponding limit hole 271, thereby limiting the movement of the limit plate 22, thereby ensuring the stability during the wall test.

[0043] like Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, the knocking part 25 includes a column 250, and the column 250 is fixedly installed in the middle of the horizontal section of the sound insulation cover 20. The lower end of the column 250 passes through the sound insulation cover 20. A plurality of groups of limit assemblies are evenly arranged on the column 250 along its axial direction. Each group of limit assemblies consists of four notches evenly distributed along the circumference of the column 250. Hammers 251 are rotatably installed in the notches through the shaft column. Striking bells 252 are installed on the outer wall of the column 250 at positions corresponding to the hammers 251. The sound insulation cover 20 is provided with a push-pull member 3 for driving the hammer 251 to swing back and forth.

[0044] like Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, the push-pull member 3 includes a spur gear 30, and the spur gear 30 is fixedly installed on the shaft column, a shaft rod 31 is slidably installed in the cylinder column 250, a fixed column 32 is fixedly installed on the lower end of the shaft rod 31, and a rack 33 meshing with the spur gear 30 in a one-to-one correspondence is fixedly installed on the fixed column 32, and a driving plate 34 located on the front side of the shaft rod 31 is slidably installed on the upper end of the sound insulation cover 20, and a switching member 4 for switching between the hammer 251 hitting the wall and the bell 252 is arranged between the driving plate 34 and the shaft rod 31, and a driving component for driving the driving plate 34 to move is arranged on the sound insulation cover 20.

[0045] like Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, the switching member 4 includes a screw hole 40, and the front side of the shaft 31 is provided with a screw hole 40 along its radial direction. The driving plate 34 is provided with an inclined groove 41 which corresponds to the screw hole 40 one by one and is inclined from the bottom to the upper right. One of the screw holes 40 is threadedly connected to a guide column 42, and the guide column 42 slides through the corresponding inclined groove 41.

[0046] like Figure 2 and Figure 4 As shown, the driving assembly includes a stepper motor 35 , the stepper motor 35 is fixedly mounted on the upper end of the soundproof cover 20 , a turntable 36 is fixedly mounted on the output shaft of the stepper motor 35 , and a connecting rod 37 is hinged between the eccentric position of the turntable 36 and the driving plate 34 .

[0047] During specific operation, in the initial state, the guide column 42 is threadedly connected to the screw hole 40 located above, and the guide column 42 slides through the inclined groove 41 located above. At this time, when the stepper motor 35 drives the turntable 36 to rotate, the turntable 36 drives the drive plate 34 to reciprocate left and right through the connecting rod 37. The drive plate 34 drives the shaft rod 31 to reciprocate up and down through the cooperation of the inclined groove 41 and the guide column 42. The shaft rod 31 drives the corresponding spur gear 30 to reciprocate through the fixed column 32 and the rack 33. The spur gear 30 drives the hammer 251 to reciprocate on the wall through the corresponding shaft column. At this time, the hammer 251 does not contact the knocking bell 252 when it reciprocates, and while the hammer 251 reciprocates and knocks on the wall, its sound insulation effect is monitored by the measuring component.

[0048] After the test is completed, the guide column 42 is manually removed, and then the shaft rod 31 is manually pulled upward to make the lower screw hole 40 face the lower inclined groove 41. At this time, the hammer 251 does not contact the inner wall of the rectangular frame formed by the wall. Then, the guide column 42 is passed through the lower inclined groove 41 and threadedly connected with the lower screw hole 40. Then, the above operation is repeated to drive the hammer 251 to reciprocate and strike the bell 252 to make it make a sound. During this process, the hammer 251 will not contact the wall. At the same time, the sound insulation effect during this detection process is determined by the measuring component.

[0049] like Figure 1 , Figure 4 , Figure 5 and Figure 6 As shown, the spray part 26 includes a rectangular water tank 260, and the rectangular water tank 260 is fixedly installed at the lower end of the horizontal section of the sound insulation cover 20. The side of the rectangular water tank 260 away from the column 250 is evenly connected with a spray head 261 along its contour, and the upper end of the rectangular water tank 260 is connected with a liquid inlet pipe 262, and the upper end of the liquid inlet pipe 262 is fixedly passed through the sound insulation cover 20.

[0050] like Figure 1 , Figure 2 and Figure 6 As shown, the measuring assembly includes a decibel meter 200 , the decibel meter 200 is installed on the soundproof cover 20 , and a measuring cup 210 is fixedly installed at the lower end of the soundproof plate 11 at a position coaxial with the drainage hole 21 .

[0051] During specific operation, the external water pump is connected to the liquid inlet pipe 262 through the external delivery pipe, and then the external water pump delivers water to the rectangular water tank 260 through the external delivery pipe and the liquid inlet pipe 262. As the amount of water in the rectangular water tank 260 increases, the pressure increases, and the water is sprayed toward the inner wall of the rectangular frame formed by the wall through the sprinkler head 261. The water sprayed toward the wall flows from the upper part of the wall to the lower part. In this process, the wall absorbs part of the water, and the excess water that is not absorbed flows into the measuring cup 210 through the drainage hole 21. Then, the hygroscopicity of the wall is determined by observing the remaining water in the measuring cup 210. Secondly, materials with high hygroscopicity will cause the thermal conductivity to increase, thereby weakening the thermal insulation effect. Therefore, it can also be used to test the thermal insulation performance of thermal insulation composite walls.

[0052] The above-mentioned sound insulation test steps are then repeated to simulate the sound insulation effect of the wall after rain, and whether the sound insulation effect is qualified is determined by observing the value change on the decibel meter 200.

[0053] In addition, the present invention also provides a thermal insulation composite wall testing method, which is completed in cooperation with a thermal insulation composite wall testing device, and includes the following steps: S1, pre-fixing a rectangular frame structure composed of four walls by a limiting plate 22.

[0054] S2. The soundproof cover 20 covers the wall through the lifting part 28, and fixes the limiting plate 22 through the fixing part 27 to ensure the stability of the limiting plate 22, thereby ensuring the stability and accuracy during the wall detection process.

[0055] S3, the knocking part 25 firstly generates sound by reciprocatingly knocking the wall through the hammer 251, and then generates sound by knocking the knocking bell 252 through the hammer 251, and determines whether the sound insulation effect of the wall is qualified in the two detection processes through the value of the decibel meter 200.

[0056] S4, the spraying part 26 sprays water on the wall, and a part of the water flowing along the wall will be absorbed by the wall, while the remaining water flows into the measuring cup 210, and then the amount of water remaining in the measuring cup 210 is observed to determine whether the hygroscopicity of the wall is qualified.

[0057] S5. The knocking unit 25 is used to perform a sound insulation test on the sprayed wall again to simulate the sound insulation effect of the wall after rain.

[0058] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0059] In addition, the terms "first", "second", "number one", "number two" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "number one", "number two" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0060] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A thermal insulation composite wall testing device, comprising an equipment frame (10); characterized in that: A sound insulation board (11) is fixedly mounted on the equipment frame (10), and a testing mechanism (2) is arranged on the sound insulation board (11); wherein: The testing mechanism (2) comprises a soundproof cover (20), the soundproof cover (20) is placed on the soundproof board (11), a drainage hole (21) is provided on the soundproof board (11), four limit plates (22) are evenly arranged at the upper end of the soundproof board (11) along the circumference of the drainage hole (21) and are located in the inner cavity of the soundproof cover (20), the limit plates (22) are L-shaped, the four limit plates (22) pre-fix the rectangular frame structure formed by four wall bodies, and the positions on the soundproof board (11) corresponding to the four limit plates (22) are all provided with sliding grooves along the radial direction of the drainage hole (21), the limit plates (22) are slidably installed in the sliding grooves through sliders (23), and a compression spring (24) is fixedly installed between the end of the slider (23) away from the drainage hole (21) and the inner wall of the sliding groove; The soundproof cover (20) is provided with a knocking part (25) for detecting the sound insulation effect of the sound produced in two states: knocking the wall inside the rectangular frame formed by the wall and not contacting the wall. The soundproof cover (20) is also provided with a spraying part (26) for spraying water on the wall to detect the hygroscopicity, and a fixing part (27) for fixing the limit plate (22); The sound insulation board (11) is provided with a lifting part (28) for driving the sound insulation cover (20) to move, and the sound insulation cover (20) and the sound insulation board (11) are respectively provided with measurement components for determining the sound insulation test results and the hygroscopicity test results.

2. A thermal insulation composite wall testing device according to claim 1, characterized in that: The knocking part (25) comprises a cylinder (250), the cylinder (250) is fixedly installed in the middle of the horizontal section of the soundproof cover (20), the lower end of the cylinder (250) passes through the soundproof cover (20), and a plurality of groups of limit assemblies are evenly arranged on the cylinder (250) along its axial direction, each group of limit assemblies is composed of four notches evenly distributed along the circumference of the cylinder (250), hammers (251) are rotatably installed in the notches through the shaft column, and knocking bells (252) are installed at positions on the outer wall of the cylinder (250) corresponding to the hammers (251), and a push-pull member (3) for driving the hammers (251) to swing back and forth is arranged on the soundproof cover (20).

3. A thermal insulation composite wall testing device according to claim 2, characterized in that: The push-pull member (3) comprises a spur gear (30), the spur gear (30) is fixedly mounted on the shaft column, a shaft rod (31) is slidably mounted in the cylinder column (250), a fixed column (32) is fixedly mounted on the lower end of the shaft rod (31), a rack (33) meshing with the spur gear (30) in a one-to-one correspondence is fixedly mounted on the fixed column (32), a drive plate (34) located on the front side of the shaft rod (31) is slidably mounted on the upper end of the soundproof cover (20), a switching member (4) for switching between the hammer (251) striking the wall and striking the bell (252) is arranged between the drive plate (34) and the shaft rod (31), and a drive assembly for driving the drive plate (34) to move is arranged on the soundproof cover (20).

4. A thermal insulation composite wall testing device according to claim 2, characterized in that: The spraying part (26) comprises a rectangular water tank (260), and the rectangular water tank (260) is fixedly installed at the lower end of the horizontal section of the soundproof cover (20), and a spray head (261) is evenly connected along the contour of the side of the rectangular water tank (260) away from the cylinder (250), and the upper end of the rectangular water tank (260) is connected to a liquid inlet pipe (262), and the upper end of the liquid inlet pipe (262) is fixedly passed through the soundproof cover (20).

5. The thermal insulation composite wall testing device according to claim 3, characterized in that: The switching member (4) includes a screw hole (40), the front side of the shaft (31) is provided with a screw hole (40) along its radial direction, and the driving plate (34) is provided with an inclined groove (41) corresponding to the screw hole (40) and inclined from bottom to upper right, wherein a guide column (42) is connected to the inner thread of one of the screw holes (40), and the guide column (42) slides through the corresponding inclined groove (41).

6. The thermal insulation composite wall testing device according to claim 1, characterized in that: The fixing portion (27) comprises a through hole (270), the upper ends of the longitudinal and transverse sections of the limiting plate (22) are both provided with a through hole (270), the sound insulation plate (11) is provided with a limiting hole (271) corresponding to the through hole (270), and the lower end of the horizontal section of the sound insulation cover (20) is fixedly provided with a limiting rod (272) corresponding to the through hole (270), and the limiting rod (272) slides through the corresponding through hole (270) to the corresponding limiting hole (271).

7. The thermal insulation composite wall testing device according to claim 1, characterized in that: The lifting part (28) comprises a corner cylinder (280), and the lower end of the sound insulation board (11) is fixedly installed with the corner cylinder (280). The telescopic section of the corner cylinder (280) movably passes through the sound insulation board (11) and is fixedly installed with a connecting block (281), and the connecting block (281) is fixedly connected to the sound insulation cover (20).

8. The thermal insulation composite wall testing device according to claim 3, characterized in that: The driving assembly comprises a stepping motor (35), the upper end of the soundproof cover (20) is fixedly mounted with the stepping motor (35), the output shaft of the stepping motor (35) is fixedly mounted with a turntable (36), and a connecting rod (37) is hinged between the eccentric position of the turntable (36) and the driving plate (34).

9. The thermal insulation composite wall testing device according to claim 1, characterized in that: The measuring assembly comprises a decibel meter (200), the decibel meter (200) is installed on the soundproof cover (20), and a measuring cup (210) is fixedly installed at a position coaxial with the drainage hole (21) at the lower end of the soundproof plate (11).

10. A thermal insulation composite wall testing method, characterized in that: The thermal insulation composite wall testing device according to claim 1 is used to complete the process, including the following steps: S1, pre-fixing the rectangular frame structure formed by combining four walls and limiting it by a limiting plate (22); S2, the soundproof cover (20) covers the wall and fits with the soundproof board (11); S3, the knocking unit (25) performs sound insulation testing on the wall; S4, the spraying unit (26) performs a hygroscopicity test on the wall; S5. Conduct sound insulation test on the sprayed wall again.

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