A penetration resistance testing device for thermal insulation structure

Abstract

The present application relates to a device for testing the penetration resistance of a thermal insulation structure, which includes a main body, a penetration mechanism and a rotating limit roller group; the penetration mechanism and the rotating limit roller group are both installed on the main body, and the penetration mechanism is used to penetrate a sample placed on the rotating limit roller group; the rotating limit roller group includes a first limit roller, a first limit plate, a second limit roller, a second limit plate and a limit member; the first limit roller and the second limit roller are both rotatably connected to the main body and are arranged at intervals; the axes of the first limit roller and the second limit roller are parallel to each other; the first limit roller and the second limit roller are both provided with a placement surface, and at least two screws are arranged on the placement surface, and at least two screws are arranged at intervals, and the screws are threadedly connected with fasteners; the surfaces of the first limit plate and the second limit plate are both penetrated with movable holes for the screws to pass through; the limit member is used to fix the rotation angle of the first limit roller and the second limit roller. The present application aims to simplify the process of testing the penetration resistance of thermal insulation structures of different shapes.

Description

Technical Field

[0001] The present application relates to the field of thermal insulation technology, and in particular to a device for testing the penetration resistance of a thermal insulation structure. Background Art

[0002] There are many types of insulation structures, not only in size, but also in shape, such as rectangular and arched. However, when testing arched and rectangular insulation structure samples, the current anti-penetration test device needs to take and put back and forth, replace and carry different fixtures, which is cumbersome. Summary of the invention

[0003] In order to simplify the penetration resistance testing process for thermal insulation structures of different shapes, the present application provides a penetration resistance testing device for thermal insulation structures.

[0004] The present application provides a thermal insulation structure penetration resistance testing device that adopts the following technical solution:

[0005] A device for testing the penetration resistance of a thermal insulation structure, comprising a main body, a penetration mechanism and a rotating limit roller group; the penetration mechanism and the rotating limit roller group are both installed on the main body, and the penetration mechanism is used to penetrate a sample placed on the rotating limit roller group; the rotating limit roller group comprises a first limit roller, a first limit plate, a second limit roller, a second limit plate and a limit member; the first limit roller and the second limit roller are both rotatably connected to the main body and are arranged at intervals; the axes of the first limit roller and the second limit roller are parallel to each other; the first limit roller and the second limit roller are both provided with a placement surface, and at least two screws are provided on the placement surface, and at least two of the screws are arranged at intervals, and the screws are threadedly connected with fasteners; the surfaces of the first limit plate and the second limit plate are both penetrated with movable holes for the screws to pass through; the limit member is used to fix the rotation angle of the first limit roller and the second limit roller.

[0006] By adopting the above technical solution, the rotation angle of the rotating limit roller group is used to match the rectangular or arched insulation structure. The first limit roller, the first limit plate, the second limit roller and the second limit plate are clamped by screws and fasteners, and the angle of the rotating limit roller group is fixed by the limiter, so as to achieve the purpose of fixing the rectangular or arched insulation structure. The penetration mechanism can be started to test the penetration resistance of the fixed insulation structure. In this way, compared with the current method of picking up and placing, carrying and replacing different clamps, the rotation angle of the rotating limit roller group and the fixing of the limiter are used, and the first limit roller, the first limit plate, the second limit roller and the second limit plate are clamped by screws and fasteners to achieve the limitation of the rectangular or arched insulation structure, which not only simplifies the penetration resistance test process of insulation structures with different shapes, but also can apply tension to both ends of the rectangular insulation structure by rotating the rotating limit roller group, so as to reduce the movement or deformation of the insulation structure during the wearing and taking off process, thereby affecting the accuracy of the test results.

[0007] Optionally, a connecting block is provided on the main body, and a sliding groove is provided on the main body for sliding connection of the connecting block, and the ends of the first limiting roller and the second limiting roller are rotatably connected to the connecting block; when the connecting block is moved, the first limiting roller approaches or moves away from the second limiting roller.

[0008] By adopting the above technical solution and matching the connecting block and the slide groove, the distance between the first limiting roller and the second limiting roller can be adjusted, so as to adapt to insulation structures of different sizes and shapes, thereby improving the adaptability of the testing device.

[0009] Optionally, a rotating hole is provided on the surface of the connecting block; a rotating part is provided at the end of each of the first limiting roller and the second limiting roller, and the rotating part is rotatable and detachably connected to the rotating hole; and the limiting member is detachably connected to the first limiting roller and the second limiting roller.

[0010] By adopting the above technical solution, it is not only convenient to disassemble the rotation limiting roller group from the main body for maintenance, but also convenient to pack it separately before leaving the factory, thereby reducing damage during transportation.

[0011] Optionally, the limiting member includes a servo motor and a limiting rod, the surface of the rotating shaft of the servo motor is penetrated by a limiting hole in a direction perpendicular to its own axis, the surfaces of the first limiting plate and the second limiting plate are penetrated by connecting holes; the limiting hole and the connecting hole are both for the limiting rod to pass through, and a limiting groove is formed on the placing surface, and the limiting groove is for the limiting rod to be inserted into.

[0012] By adopting the above technical solution, the combination of the servo motor can make the rotation angle adjustment more precise compared to manual adjustment, and the rotation force is also easy to control. Through the combination of the limit rod, the first limit plate and the second limit plate, it can better adapt to insulation structures of different thicknesses, further improving the adaptability of the test device.

[0013] Optionally, the placement surface includes a first inclined surface and a second inclined surface; the angle between the first inclined surface and the second inclined surface is an acute angle; when two arched samples are placed on the first inclined surface and the second inclined surface, the inner concave surfaces of the two arched samples face each other.

[0014] By adopting the above technical scheme, the forces on the outer convex surface and the inner concave surface of the arched sample are different in structure. Therefore, when testing the penetration resistance of the arched sample, it is necessary to test the inner concave surface and the outer convex surface of the arched sample. The test device can fix the arched samples in two directions at the same time, that is, when two arched samples are placed on the rotating limiting roller group, the inner concave surfaces of the two arched samples are opposite to each other. In one penetration test, the outer convex surface and the inner concave surface of the arched sample can be tested, thereby improving the test efficiency of the penetration resistance test device and simplifying the test process.

[0015] Optionally, an air nozzle is connected to the main body, the air nozzle is externally connected to a compressed air pump, and the air nozzle is oriented toward a position where the penetration mechanism penetrates the sample.

[0016] By adopting the above technical solution and utilizing the combination of the air nozzle and the compressed air pump, the risk of debris falling on the main body or the inner concave surface of the arched sample when penetrating the sample is reduced, thereby affecting the test data.

[0017] Optionally, it also includes a baffle for blocking debris, which is installed on the main body; the two ends of the first limiting roller are respectively rotatably connected to the main body and the baffle, and the two ends of the second limiting roller are respectively rotatably connected to the main body and the baffle.

[0018] By adopting the above technical solution and setting the baffle, on the one hand, the rotation stability of the first limiting roller and the second limiting roller is increased, and on the other hand, the risk of debris from the penetration test collapsing toward the operator is reduced.

[0019] Optionally, the baffle includes a fixed portion and a movable portion; the fixed portion is connected to the main body, and one side of the movable portion and one side of the fixed portion away from the main body are hinged to each other.

[0020] By adopting the above technical solution and utilizing the combination of the movable part and the fixed part, the shielding area of ​​the baffle is increased, further reducing the risk of debris from the penetration test collapsing toward the operator.

[0021] Optionally, the end of the movable portion away from its hinged surface is arranged in an arc shape.

[0022] By adopting the above technical solution, the arc-shaped setting can increase or decrease the weight of the movable part on one side, thereby reducing the risk of the movable part flipping over by itself during the penetration test, and can also make it easier for the operator to grasp and flip the movable part.

[0023] Optionally, the surfaces of the first limiting roller, the first limiting plate, the second limiting roller and the second limiting plate are all provided with anti-slip parts, and the anti-slip parts are used to limit the radial sliding of the sample placed on the rotating limiting roller group along the first limiting roller; the anti-slip part includes an elastic layer and a sliding layer, and the elastic layer and the sliding layer are both extended along the axial direction of the first limiting roller, the elastic layer is connected to the surface of the sliding layer, and the surface of the sliding layer facing away from the elastic layer is provided with a convex portion; the surfaces of the placing surface, the first limiting plate and the second limiting plate are all provided with sliding paths, and the sliding paths are extended through the axial direction of the first limiting roller, and the sliding paths are provided for the sliding connection of the convex portion.

[0024] By adopting the above technical solution and introducing the anti-slip part, the risk of displacement or deformation of the sample during the penetration test is reduced, and the accuracy of the test results is improved. In addition, when there are two arched samples for testing, after the upper sample is tested, the upper sample can be pulled along the axial direction of the first limiting roller to expose the lower sample, and the lower sample can be tested without loosening the fasteners, which is convenient and quick.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] Compared with the current method of picking up and placing, carrying and replacing different fixtures, the rotation angle of the rotating limit roller group and the fixation of the limit member are used, and the first limit roller, the first limit plate, the second limit roller and the second limit plate are clamped by screws and fasteners to achieve the limitation of the rectangular or arched insulation structure. This not only simplifies the penetration resistance test process of insulation structures with different shapes, but also applies tension to both ends of the rectangular insulation structure through the rotation of the rotating limit roller group, thereby reducing the movement or deformation of the insulation structure during the wearing and taking off process, thereby affecting the accuracy of the test results;

[0027] The combination of the servo motor makes the rotation angle adjustment more precise than manual adjustment, and the rotation force is also easy to control. The combination of the limit rod, the first limit plate and the second limit plate can better adapt to the insulation structure of different thicknesses, further improving the adaptability of the test device.

[0028] By combining the first inclined plane and the second inclined plane, the test device can simultaneously fix arched samples in two directions, that is, when two arched samples are placed on the rotating limiting roller group, the inner concave surfaces of the two arched samples are opposite to each other, and a single penetration test can be performed to test the outer convex surface and the inner concave surface of the arched sample, thereby improving the test efficiency of the anti-penetration test device and simplifying the test process. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0030] Figure 2 It is a schematic diagram of the explosion structure of an embodiment of the present application.

[0031] Figure 3 yes Figure 2 Enlarged view of part A.

[0032] Figure 4 It is a schematic diagram used to show the status of two arch samples during testing.

[0033] Figure 5 It is a schematic diagram used to show the state of a rectangular sample during testing.

[0034] Figure 6 It is a schematic diagram used to show the state of movement of the upper sample when testing two arched samples.

[0035] Figure 7 It is a schematic diagram of the structure of the anti-slip member.

[0036] Explanation of the reference numerals: 1. main body; 11. connecting block; 111. rotating hole; 12. slide groove; 2. penetration mechanism; 21. cylinder; 22. pressure sensor; 23. penetration needle; 3. rotating limit roller group; 31. first limit roller; 32. first limit plate; 33. second limit roller; 34. second limit plate; 35. limit member; 351. servo motor; 3511. limit hole; 352. limit rod; 36. rotating part; 37. placement surface; 371. first inclined surface; 372. second inclined surface; 373. limit groove; 38. screw; 4. baffle; 41. slideway; 42. fixed part; 43. movable part; 5. movable hole; 6. connecting hole; 7. anti-slip member; 71. elastic layer; 72. sliding layer; 721. convex part; 8. air nozzle; 9. sliding way. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-5 This application is described in further detail.

[0038] The embodiment of the present application discloses a penetration resistance test device for thermal insulation structures. The present invention simplifies the problem that when testing arched and rectangular thermal insulation structure samples, the fixtures of the current penetration resistance test device need to be taken back and forth, and different fixtures need to be replaced and carried, which is cumbersome to operate, so as to improve the test efficiency and the adaptability of the samples.

[0039] Reference Figure 1 A penetration resistance test device for a thermal insulation structure includes a main body 1, a penetration mechanism 2, a rotating limit roller group 3 and a baffle 4. The main body 1 is equipped with a display and a PLC controller, and the display and the PLC controller are electrically connected to the penetration mechanism 2 through wires. The penetration mechanism 2 and the rotating limit roller group 3 are both installed on the main body 1. The penetration mechanism 2 is used to penetrate a sample placed on the rotating limit roller group 3. The rotating limit roller group 3 is used to fix an arched or rectangular sample. The baffle 4 is used to block debris that collapses toward an operator during the penetration test.

[0040] Reference Figure 2 and Figure 3 Specifically, the main body 1 is provided with connecting blocks 11 and chutes 12, and the number of connecting blocks 11 and chutes 12 corresponds to the number of the rotation limiting roller group 3. That is, there are two limiting rollers in the rotation limiting roller group 3, and the connecting blocks 11 also correspond to two, and the chutes 12 have one, and the two connecting blocks 11 are both slidably connected to the chutes 12, and when the rotation limiting roller group 3 has four limiting rollers, the connecting blocks 11 also correspond to four, and the chutes 12 have two, and one chutes 12 corresponds to two connecting blocks 11, and so on, which will not be repeated. In this embodiment, the description is based on the case where the rotation limiting roller group 3 has two limiting rollers.

[0041] Reference Figure 4 The penetration mechanism 2 includes a cylinder 21, a pressure sensor 22 and a penetration needle 23. The cylinder 21 is fixed to the main body 1, and the pressure sensor 22 is fixed to the end of the transmission shaft of the cylinder 21. The penetration needle 23 is threadedly connected to the end of the pressure sensor 22 away from the cylinder 21. Through the combination of the display and the PLC controller, the operator can set the stroke of the cylinder 21, and when the penetration needle 23 performs an anti-penetration test on the sample, the display will show the pressure curve from the pressure sensor 22.

[0042] Reference Figure 2 , Figure 3 and Figure 4The rotation limiting roller group 3 includes a first limiting roller 31, a first limiting plate 32, a second limiting roller 33, a second limiting plate 34 and a limiting member 35. A rotation hole 111 is formed through the surface of the connection block 11. The ends of the first limiting roller 31 and the second limiting roller 33 are connected with a rotating part 36. The rotating part 36 is rotatably and detachably connected to the rotating hole 111, such as the rotating part 36 and the rotating hole 111 are clearance-matched. The limiting member 35 is installed on the baffle 4. The number of the limiting members 35 corresponds to the number of the rotation limiting roller groups 3. That is, if there are two rotation limiting roller groups 3, there are two corresponding limiting members 35. If there are four rotation limiting roller groups 3, there are four corresponding limiting members 35, and so on. The first limiting roller 31 and the second limiting roller 33 are connected to the limiting member 35 at one end away from their own rotating part 36. The limiting member 35 is used to fix the rotation angle of the first limiting roller 31 and the second limiting roller 33. The axes of the first limiting roller 31 and the second limiting roller 33 are located on the same plane and are arranged at an interval. The axes of the first limiting roller 31 and the second limiting roller 33 are parallel to each other.

[0043] Reference Figure 4 and Figure 5 The surfaces of the first limiting roller 31 and the second limiting roller 33 are both provided with a placement surface 37. Taking the first limiting roller 31 as an example, the second limiting roller 33 can be obtained in the same way. The placement surface 37 includes a first inclined surface 371 and a second inclined surface 372. The angle between the first inclined surface 371 and the second inclined surface 372 is an acute angle. When the two arched samples are placed on the first inclined surface 371 and the second inclined surface 372, the inner concave surfaces of the two arched samples face each other.

[0044] Reference Figure 3 and Figure 5 At least two screws 38 are fixed on the placement surface 37, and the axis of the screw 38 is perpendicular to the axis of the first limiting roller 31. At least two screws 38 are located at the junction of the first inclined surface 371 and the second inclined surface 372 and are arranged at intervals. The screws 38 are threadedly connected with fasteners, such as butterfly nuts. The surfaces of the first limiting plate 32 and the second limiting plate 34 are penetrated with movable holes 5 for the screws 38 to pass through. After placing the sample on the first inclined surface 371 and the second inclined surface 372, the screw 38 is passed through the movable hole 5, and the fasteners are tightened to fix the sample on the first inclined surface 371 and the second inclined surface 372.

[0045] Reference Figure 5 The placement surface 37 and the surfaces of the first limiting plate 32 and the second limiting plate 34 are all slidably connected with a sliding resistance member 7. The sliding resistance member 7 is used to prevent the sample on the rotating limiting roller set 3 from sliding along the radial direction of the first limiting roller 31 during the penetration test, thereby improving the accuracy of the test result.

[0046] Reference Figure 4 , Figure 6 and Figure 7The anti-slip member 7 includes an elastic layer 71 and a sliding layer 72. Both the elastic layer 71 and the sliding layer 72 are arranged to extend along the axial direction of the first limiting roller 31. The elastic layer 71 is bonded and fixed to the surface of the sliding layer 72. The surface of the sliding layer 72 facing away from the elastic layer 71 is integrally formed with a convex portion 721. The sliding layer 72 is made of a self-lubricating material. The surfaces of the placement surface 37 and the first limiting plate 32 and the second limiting plate 34 are provided with a sliding path 9. The sliding path 9 extends and penetrates along the axial direction of the first limiting roller 31. The sliding path 9 is provided for the sliding connection of the convex portion 721. Through the combination of the convex portion 721 and the sliding path 9, when there are two arched samples for testing, after the upper sample is tested, the upper sample can be pulled along the axial direction of the first limiting roller 31 to expose the lower sample. The lower sample can be tested without loosening the fasteners, which is convenient and quick.

[0047] Reference Figure 2 and Figure 5 The limiting member 35 includes a servo motor 351 and a limiting rod 352. The surface of the rotating shaft of the servo motor 351 is penetrated with a limiting hole 3511 in a direction perpendicular to its own axis. The surfaces of the first limiting plate 32 and the second limiting plate 34 are penetrated with a connecting hole 6. The limiting hole 3511 and the connecting hole 6 are both for the limiting rod 352 to pass through. The placement surface 37 is provided with a limiting groove 373, and the limiting groove 373 is for the limiting rod 352 to be inserted. Compared with manual adjustment, the combination of the servo motor 351 can adjust the rotation angle more accurately, and the rotation force is also easy to control. Through the combination of the limiting rod 352, the first limiting plate 32 and the second limiting plate 34, it can better adapt to the insulation structure of different thicknesses, further improving the adaptability of the test device.

[0048] Reference Figure 2 and Figure 3 Of course, the limiting member 35 can also be a bolt to lock the first limiting roller 31, the second limiting roller 33 and the baffle 4, or it can be a screw threadedly connected to the slide groove 12, and the screw is rotated to tighten the rotating part 36 into the rotating hole 111, etc.

[0049] Reference Figure 2 and Figure 3 It is worth noting that, in order to adapt to samples of different sizes, the first limiting roller 31 and the second limiting roller 33 can be moved closer to or farther away from each other by using the connecting block 11 and the slide groove 12. Similarly, a slideway 41 is provided through the baffle 4, and the bolts between the servo motor 351 and the baffle 4 and the rotating shaft of the servo motor 351 pass through the slideway 41. When the spacing between the first limiting roller 31 and the second limiting roller 33 is determined, the servo motor 351 is locked to the baffle 4 by using bolts and nuts to adapt to the sliding of the first limiting roller 31 and the second limiting roller 33, thereby adapting to the testing of samples of different sizes.

[0050] Reference Figure 1 and Figure 2 The baffle 4 includes a fixed portion 42 and a movable portion 43. The fixed portion 42 can be detachably connected to the main body 1, such as magnetic fixation, plug-in connection, bolt connection, etc. The setting of the above-mentioned baffle 4 and the connection of each structure are all on the fixed portion 42. The fixed portion 42 is located in the middle of the two limit members 35 and is fixed with an air nozzle 8. The air nozzle 8 is externally connected to a compressed air pump, and the air nozzle 8 is oriented toward the position where the penetration mechanism 2 penetrates the sample. By using the combination of the air nozzle 8 and the compressed air pump, the risk of debris falling on the main body 1 or the inner concave surface of the arched sample when penetrating the sample is reduced, thereby affecting the test data. Of course, in order to reduce the risk of debris flying everywhere, a collection basket can be installed on the main body 1 to collect the debris.

[0051] Reference Figure 1 and Figure 2 One side of the movable part 43 is hinged to the side of the fixed part 42 away from the main body 1, and the end of the movable part 43 away from its hinged surface is arranged in an arc shape. The significance of such a design is that the matching of the movable part 43 and the fixed part 42 is used to increase the shielding area of ​​the baffle 4, and the arc-shaped setting increases or decreases the weight of the movable part 43 on one side, thereby reducing the risk of the movable part 43 turning over by itself during the penetration test, and on the other hand, it is convenient for the operator to grasp and turn the movable part 43.

[0052] The implementation principle of the penetration resistance testing device of a thermal insulation structure in the embodiment of the present application is as follows: when testing a rectangular sample, the first limiting roller 31 and the second limiting roller 33 are rotated to a suitable angle for the rectangular sample to be placed. After the rectangular sample is placed on the first inclined surface 371 or the second inclined surface 372, the first limiting plate 32, the second limiting plate 34 and the fastener are used to lock the rectangular sample to achieve the purpose of fixing the rectangle on the rotating limiting roller group 3. The servo motor 351 is started to stretch the rectangular sample to make its surface flat and wrinkle-free, and then the penetration mechanism 2 can be started to perform the penetration resistance test, the compressed air pump is started, and the air nozzle 8 blows away the debris at the penetration position.

[0053] When testing the arched sample, the first limiting roller 31 and the second limiting roller 33 are rotated to a suitable angle so that the two arched samples are placed opposite to each other. After the two arched samples are placed on the first inclined surface 371 and the second inclined surface 372, the first limiting plate 32, the second limiting plate 34 and the fasteners are used to lock the two arched samples to the rotating limiting roller group 3. The penetration mechanism 2 is started to perform the penetration resistance test, the compressed air pump is started, and the air nozzle 8 blows away the debris at the penetration position. After the upper sample test is completed, the penetration mechanism 2 is reset, and the operator slides the upper sample so that the inner concave surface of the lower sample faces the penetration mechanism 2, and the penetration mechanism 2 is started to perform the penetration test of the lower sample.

[0054] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A device for testing the penetration resistance of a thermal insulation structure, characterized in that: The invention comprises a main body (1), a penetration mechanism (2) and a rotating limiting roller group (3); the penetration mechanism (2) and the rotating limiting roller group (3) are both mounted on the main body (1), and the penetration mechanism (2) is used to penetrate a sample placed on the rotating limiting roller group (3); the rotating limiting roller group (3) comprises a first limiting roller (31), a first limiting plate (32), a second limiting roller (33), a second limiting plate (34) and a limiting member (35); the first limiting roller (31) and the second limiting roller (33) are both rotatably connected to the main body (1) and are spaced apart; the first limiting roller (31) and the second limiting roller (33) are spaced apart from each other. The axes of the positioning rollers (33) are parallel to each other; the first limiting roller (31) and the second limiting roller (33) are both provided with a placement surface (37), and at least two screws (38) are provided on the placement surface (37), and at least two of the screws (38) are arranged at intervals, and the screws (38) are threadedly connected with fasteners; the surfaces of the first limiting plate (32) and the second limiting plate (34) are both penetrated with movable holes (5) for the screws (38) to pass through; the limiting member (35) is used to fix the rotation angle of the first limiting roller (31) and the second limiting roller (33), and the placement surface (37) includes a first inclined surface (371) and a second inclined plane (372); the angle between the first inclined plane (371) and the second inclined plane (372) is an acute angle; when two arched samples are placed on the first inclined plane (371) and the second inclined plane (372), the inner concave surfaces of the two arched samples are opposite to each other; the surfaces of the first limiting roller (31), the first limiting plate (32), the second limiting roller (33) and the second limiting plate (34) are all provided with anti-slip members (7), and the anti-slip members (7) are used to limit the radial sliding of the sample placed on the rotating limiting roller group (3) along the first limiting roller (31); the anti-slip member (7) comprises An elastic layer (71) and a sliding layer (72), wherein the elastic layer (71) and the sliding layer (72) are both extended along the axial direction of the first limiting roller (31), the elastic layer (71) is connected to the surface of the sliding layer (72), and a convex portion (721) is provided on the surface of the sliding layer (72) facing away from the elastic layer (71); the surfaces of the placement surface (37), the first limiting plate (32) and the second limiting plate (34) are all provided with a sliding path (9), the sliding path (9) is extended and penetrated along the axial direction of the first limiting roller (31), and the sliding path (9) is provided for the sliding connection of the convex portion (721).

2. The device for testing the penetration resistance of a thermal insulation structure according to claim 1, characterized in that: The main body (1) is provided with a connecting block (11), and the main body (1) is provided with a sliding groove (12) for sliding connection of the connecting block (11), and the ends of the first limiting roller (31) and the second limiting roller (33) are both rotatably connected to the connecting block (11); when the connecting block (11) is moved, the first limiting roller (31) approaches or moves away from the second limiting roller (33).

3. The device for testing the penetration resistance of a thermal insulation structure according to claim 2, characterized in that: A rotating hole (111) is provided on the surface of the connecting block (11); a rotating portion (36) is provided at the end of each of the first limiting roller (31) and the second limiting roller (33); the rotating portion (36) is rotatable and detachably connected to the rotating hole (111); and the limiting member (35) is detachably connected to the first limiting roller (31) and the second limiting roller (33).

4. The device for testing the penetration resistance of a thermal insulation structure according to claim 1, characterized in that: The limiting member (35) comprises a servo motor (351) and a limiting rod (352); a limiting hole (3511) is formed on the surface of the rotating shaft of the servo motor (351) in a direction perpendicular to its axis; connecting holes (6) are formed on the surfaces of the first limiting plate (32) and the second limiting plate (34); the limiting hole (3511) and the connecting hole (6) are both provided for the limiting rod (352) to pass through; a limiting groove (373) is provided on the placement surface (37); the limiting groove (373) is provided for the limiting rod (352) to be inserted into.

5. The device for testing the penetration resistance of a thermal insulation structure according to claim 1, characterized in that: The main body (1) is connected to an air nozzle (8), the air nozzle (8) is externally connected to a compressed air pump, and the air nozzle (8) is oriented toward the position where the penetration mechanism (2) penetrates the sample.

6. The device for testing the penetration resistance of a thermal insulation structure according to claim 1, characterized in that: It also includes a baffle (4) for blocking debris, wherein the baffle (4) is mounted on the main body (1); the two ends of the first limiting roller (31) are respectively rotatably connected to the main body (1) and the baffle (4), and the two ends of the second limiting roller (33) are respectively rotatably connected to the main body (1) and the baffle (4).

7. The device for testing the penetration resistance of a thermal insulation structure according to claim 6, characterized in that: The baffle (4) comprises a fixed portion (42) and a movable portion (43); the fixed portion (42) is connected to the main body (1), and one side of the movable portion (43) is hinged to a side of the fixed portion (42) away from the main body (1).

8. The device for testing the penetration resistance of a thermal insulation structure according to claim 7, characterized in that: The end of the movable portion (43) away from its hinged surface is arranged in an arc shape.

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