Building external wall insulation board tensile testing device

Abstract

The utility model belongs to building engineering quality detection technical field, concretely provides a kind of building external wall insulation board tensile detection device, including support frame, loading mechanism, tension sensor, fixed plate and connecting plate, support frame is as the support unit of each component part, play the supporting fixed effect, make loading mechanism can be perpendicular to the board surface of insulation board and carry out telescopic. The telescopic end of loading mechanism is connected with tension sensor, the other side of tension sensor is connected with fixed plate, and fixed plate and connecting plate are inserted and matched by clamping groove and clamping block. The edge of connecting plate is equipped with connecting portion, before epoxy resin glue is completely cured, connecting portion and insulation board main body can be temporarily fixed by self-tapping screw, prevent connecting plate movement, in low temperature, windy and high humidity weather also can guarantee that connecting plate and insulation board between bonding are reliable, to guarantee that the construction quality detection work of building external wall insulation board is carried out smoothly.

Description

Technical Field

[0001] This application belongs to the field of building engineering quality testing technology, specifically a tensile testing device for building exterior wall insulation boards. Background Technology

[0002] Thermal insulation boards are material layers fixed to the exterior walls of buildings for thermal insulation. Common insulation board materials include polystyrene (EPS) and extruded polystyrene (XPS). If the insulation boards are not firmly bonded, they may fall from heights, posing a significant safety hazard to residents. Therefore, after the construction of exterior wall insulation boards is completed, it is necessary to test the strength of the installation.

[0003] The external wall insulation tensile (pull-out) test is a method for testing the tensile strength of external wall insulation materials (mainly insulation boards and insulation nails) by applying external tensile force. During the test, a tensile force perpendicular to the wall surface is applied to the insulation material using testing equipment. The tensile force value is measured in real time using a tensile sensor, and the maximum tensile force that the insulation material withstands when peeling off from the external wall is recorded to measure its tensile strength and adhesion performance to the wall.

[0004] When performing tensile testing on insulation boards, the connecting plate (test block) of the testing equipment must first be bonded to the insulation board. Then, a blade is used to cut the insulation board in the bonding area with the connecting plate from the main body along the contour of the connecting plate. After the adhesive has cured firmly, the tensile sensor and loading mechanism are connected to the connecting plate. The loading mechanism applies tension to test the tensile strength of the insulation board at that location.

[0005] When fixing the connecting plate, the testing party often applies epoxy resin adhesive to it. Epoxy resin requires a curing time, during which time adhesive tape is used to temporarily fix the connecting plate until the epoxy resin is fully cured. Because existing connecting plates are typically made of metal materials such as cast iron, carbon steel, or stainless steel, they are quite heavy. The adhesiveness of the tape is greatly affected by external temperature; in low temperatures, high humidity, or windy weather, the adhesion of the tape is compromised. This can cause the connecting plate to shift before the epoxy resin is fully cured, resulting in a weak bond between the connecting plate and the insulation board. If the bond strength is less than the tensile strength of the insulation board, separation may occur at this point during testing, leading to test failure. Utility Model Content

[0006] Based on the above-mentioned technical problems, this application provides a tensile testing device for building exterior wall insulation boards to solve the technical problem that the connecting plates in the prior art are easily not firmly bonded.

[0007] To achieve the above objectives, the technical solution adopted in this application is: to provide a tensile testing device for building exterior wall insulation boards, comprising: A support frame having at least two support portions for perpendicularly abutting against the insulation board; The loading mechanism is located on the support frame and has a telescopic end that is perpendicular to the insulation board; A tension sensor is located at the telescopic end; A fixing plate is disposed on the side of the tension sensor opposite to the telescopic end. The fixing plate has a slot, the opening of which is parallel to the insulation plate. A connecting plate is used to fit with the insulation board. The edge of the connecting plate is provided with a plurality of outwardly extending connecting parts at intervals along its circumference. Each connecting part has a connecting hole that penetrates its own thickness. The side of the connecting plate adjacent to the fixing plate has a locking block. The locking block is inserted into the locking slot and can form a limit in the length direction of the telescopic end.

[0008] In one possible implementation, the fixing plate includes: Two first plates are spaced apart along the length of the telescopic end, and are parallel to each other. One first plate is connected to the telescopic end, and the other first plate has a clearance hole that penetrates its own thickness. The second plate is connected between the two first plates; the space enclosed by the second plate and the two first plates, together with the clearance hole, forms the slot. When the card block is inserted into the slot, the card block and the first plate with the clearance hole form a limit.

[0009] In one possible implementation, the card block includes: A first latching portion is disposed on the side of the connecting plate adjacent to the first plate body. When the latching block is inserted into the latching slot, the first latching portion is accommodated within the clearance hole. The second snap-fit ​​portion is located on the side of the first snap-fit ​​portion away from the connecting plate, and the second snap-fit ​​portion extends outward along the edge of the first snap-fit ​​portion.

[0010] In one possible implementation, the side of the connecting portion adjacent to the insulation board is spaced at a predetermined distance from the mating surface of the connecting plate.

[0011] In one possible implementation, the connecting plate is square, and a plurality of the connecting portions are disposed opposite each other on both sides of the connecting plate.

[0012] In one possible implementation, the loading mechanism includes: A screw, one end of which is connected to the tension sensor, and the other end passing through the support frame, the screw forming the telescopic end, and the screw slidingly engaging with the support frame along its own length; and A nut is rotatably mounted on the support frame about its own axis and is threadedly engaged with the screw.

[0013] In one possible implementation, the nut is provided with a plurality of handles spaced apart along its circumference.

[0014] In one possible implementation, the support portion has a support foot on the side that abuts against the insulation board, and the support foot is detachably connected to the support portion.

[0015] In one possible implementation, the supporting foot has a sharp fixing cone on the side that abuts against the insulation board.

[0016] In one possible implementation, the support frame has a first mounting hole, which is a threaded hole, and the axis of the first mounting hole is perpendicular to the length direction of the telescopic end. The building exterior wall insulation board tensile testing device also includes a fixed handle, which has a second mounting hole coaxially aligned with the first mounting hole; a locking bolt passes through the second mounting hole, and the locking bolt is threaded into the first mounting hole.

[0017] Compared with the prior art, the beneficial effects of the tensile testing device for building exterior wall insulation boards provided in this application are: The tensile testing device for building exterior wall insulation boards provided in this application includes a support frame, a loading mechanism, a tension sensor, a fixing plate, and a connecting plate. The support frame serves as the support unit for each component, providing support and fixation, allowing the loading mechanism to extend and retract perpendicular to the surface of the insulation board. The extension end of the loading mechanism is connected to the tension sensor, and the other side of the tension sensor is connected to the fixing plate. The fixing plate and the connecting plate are engaged through slots and blocks. In use, firstly, a utility knife is used to cut the insulation board along the shape of the connecting plate. Then, epoxy resin is applied to the surface of the connecting plate and bonded to the insulation board. The insulation board in the testing area is separated from the main body of the insulation board. Self-tapping screws are used to temporarily connect the connecting part and the main body of the insulation board together. The pre-tightening force of the self-tapping screws is used to ensure a tight fit between the insulation board and the connecting plate until the epoxy resin cures. After the epoxy resin has cured, the self-tapping screws are removed, and the fixing plate and connecting plate are snapped together. Then, a pulling force is applied through the loading mechanism to pull the insulation board to be tested from the building's exterior wall. The pulling force value is monitored in real time by a tension sensor, and the construction quality of the insulation board at that location is judged based on the test results.

[0018] This application provides a connecting part along the edge of the connecting plate. Before the epoxy resin adhesive is fully cured, the connecting part and the main body of the insulation board are temporarily fixed by self-tapping screws to prevent the connecting plate from moving. Even in low temperature, windy and humid weather, the bonding between the connecting plate and the insulation board can be guaranteed to be reliable, thereby ensuring the smooth progress of the construction quality inspection of the building's exterior wall insulation board. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the structure of the tensile testing device for building exterior wall insulation boards provided in this application embodiment. Figure 1 ; Figure 2 A schematic diagram of the structure of the tensile testing device for building exterior wall insulation boards provided in this application embodiment. Figure 2 ; Figure 3 This is a schematic diagram of the connecting plate in an embodiment of this application; Figure 4 This is a schematic diagram of the structure of the fixing plate and the tension sensor in the embodiments of this application; Figure 5 A schematic diagram of the structure of the tensile testing device for building exterior wall insulation boards provided in this application embodiment. Figure 3 ; Figure 6 This is a schematic diagram illustrating the use of this application embodiment in performing tensile testing on a vertical external wall insulation board; Figure 7 This is a schematic diagram illustrating the use of this application embodiment when performing tensile testing on a downwardly tilted exterior wall insulation board; Figure 8 This is a schematic diagram illustrating the use of this application embodiment when performing tensile testing on an upwardly inclined external wall insulation board; Explanation of reference numerals in the attached figures: 10. Support frame; 11. Support part; 12. Support foot; 121. Fixed cone; 20. Loading mechanism; 21. Screw; 22. Nut; 23. Handle; 30. Tension sensor; 40. Fixed plate; 41. First plate; 411. Clearance hole; 42. Second plate; 50. Connecting plate; 51. Connecting part; 52. Locking block; 521. First locking part; 522. Second locking part; 60. Fixed handle; 61. Locking bolt; 70. Building exterior wall; 80. Building insulation layer. Detailed Implementation

[0021] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0022] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0023] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0026] Please refer to the following: Figures 1 to 8 The tensile testing device for building exterior wall insulation boards provided in the embodiments of this application will be described below.

[0027] Please see Figures 1 to 5This application provides a tensile testing device for building exterior wall insulation boards, including a support frame 10, a loading mechanism 20, a tension sensor 30, a fixing plate 40, and a connecting plate 50. The support frame 10 has at least two support portions 11, which are used to perpendicularly abut against the insulation board; the loading mechanism 20 is disposed on the support frame 10 and has a telescopic end perpendicular to the insulation board; the tension sensor 30 is disposed on the telescopic end; the fixing plate 40 is disposed on the side of the tension sensor 30 away from the telescopic end, and the fixing plate 40 has a slot, the opening direction of which is parallel to the surface direction of the insulation board; the connecting plate 50 is used to fit against the insulation board, and the edge of the connecting plate 50 has a plurality of outwardly extending connecting portions 51 spaced along its circumference. The connecting portions 51 have connecting holes that penetrate their own thickness, and the side of the connecting plate 50 adjacent to the fixing plate 40 has a locking block 52, which is inserted into the slot and can form a limit in the length direction of the telescopic end.

[0028] Compared with the prior art, the beneficial effects of the tensile testing device for building exterior wall insulation boards provided in this application embodiment are: The tensile testing device for building exterior wall insulation boards provided in this application includes a support frame 10, a loading mechanism 20, a tension sensor 30, a fixing plate 40, and a connecting plate 50. The support frame 10 serves as a support unit for each component, providing support and fixation, allowing the loading mechanism 20 to extend and retract perpendicular to the surface of the insulation board. The extension end of the loading mechanism 20 is connected to the tension sensor 30, and the other side of the tension sensor 30 is connected to the fixing plate 40. The fixing plate 40 and the connecting plate 50 are engaged through a slot and a locking block 52.

[0029] In use, first use a utility knife to cut the insulation board along the outline of the connecting plate 50. Then, apply epoxy resin adhesive to the surface of the connecting plate 50 and bond it to the insulation board. Separate the insulation board in the testing area from the main body of the insulation board. Use self-tapping screws to temporarily connect the connecting part 51 and the main body of the insulation board as one unit. Use the pre-tightening force of the self-tapping screws to make the insulation board and the connecting plate 50 fit tightly until the epoxy resin adhesive cures. After the epoxy resin adhesive has cured, remove the self-tapping screws, and then snap the fixing plate 40 and the connecting plate 50 into place. Apply tension through the loading mechanism 20 to pull the insulation board to be tested from the building's exterior wall 70. The tension sensor 30 monitors the tension value in real time, and the construction quality of the insulation board at this location is judged based on the test results.

[0030] In this embodiment, a connecting part 51 is provided on the edge of the connecting plate 50. Before the epoxy resin adhesive is fully cured, the connecting part 51 and the main body of the insulation board are temporarily fixed by self-tapping screws to prevent the connecting plate 50 from moving. Even in low temperature, windy and humid weather, the bonding between the connecting plate 50 and the insulation board can be guaranteed to be reliable, thereby ensuring the smooth progress of the construction quality inspection of the building exterior wall insulation board.

[0031] The support frame 10 provides stable support for the various components installed on it, and may be made of materials such as stainless steel. The support frame 10 has a support part 11 for perpendicularly adhering to the surface of the building insulation layer 80 to be tested. To ensure stable support, at least two support parts 11 should be provided.

[0032] The loading mechanism 20 is used to provide tensile force to peel the insulation board to be tested from the building exterior wall 70. The loading mechanism 20 can be electrically loaded or manually loaded.

[0033] When electric loading is used, the loading mechanism 20 can be an electric telescopic rod, which forms a telescopic end and can move along its own length when energized.

[0034] When using manual loading, please refer to Figure 1 , Figure 2 and Figure 5 The loading mechanism 20 includes a screw 21 and a nut 22. One end of the screw 21 is connected to the tension sensor 30, and the other end passes through the support frame 10, forming a telescopic end. The screw 21 and the support frame 10 are slidably engaged along their length. The nut 22 is rotatably mounted on the support frame 10 about its own axis and is threadedly engaged with the screw 21. Rotating the nut 22 can drive the screw 21 to move along its own length, thereby moving the tension sensor 30 and the fixing plate 40, applying tensile force to the insulation board and the connecting plate 50.

[0035] To facilitate manual rotation of the nut 22, the nut 22 is provided with multiple handles 23 spaced apart along its circumference. The handles 23 can be fixed to the nut 22 by welding.

[0036] The tension sensor 30 is used to detect the tensile force applied to the insulation board by the loading mechanism 20 in real time. The tension sensor 30 can be any existing sensor product on the market, and its specific specifications and models are not limited. The tension sensor 30 is connected to a display instrument, which displays and records the detection results of the tension sensor 30 so that the testing personnel can review them after the test.

[0037] The fixing plate 40 and the tension sensor 30 are fixedly connected as a single unit via a connecting rod, which can be made of stainless steel. The overall shape of the fixing plate 40 and the connecting plate 50 is typically square, but it can also be rectangular. The fixing plate 40 has a slot, the specific shape of which is as follows: Figure 2 and Figure 4 As shown. The card block 52 is a long strip-shaped block structure that fits the card slot.

[0038] When the locking block 52 is inserted into the slot, it can form a limit in the length direction of the telescopic end, and the tensile force can be transmitted to the connecting plate 50 through the locking block 52. After the test is completed, the fixing plate 40 is moved to disengage the locking block 52 from the slot, and the connecting plate 50 and the fixing plate 40 are separated.

[0039] The edge of the connecting plate 50 extends outward to form a connecting portion 51. The connecting plate 50 is square, and multiple connecting portions 51 are arranged opposite each other on both sides of the connecting plate 50. The connecting portion 51 has connecting holes for self-tapping screws to pass through. The connecting plate 50 can be made of aluminum alloy plate or stainless steel plate. The thickness of the connecting plate 50 should not be too large, otherwise it will increase its weight and make it easy to fall off before the epoxy resin cures.

[0040] Because the connecting plate 50 has a protruding connecting part 51 on its outer edge, it is inconvenient to cut along the contour of the connecting plate 50 with a knife. Therefore, before inspection, a square area with the same side length as the connecting plate 50 can be cut on the insulation board using a knife (utility knife), and then the connecting plate 50 can be glued to the insulation board. At this time, the connecting part 51 extends above the insulation board body that is not under tensile stress. The connecting part 51 and the insulation board body can be temporarily fixed with self-tapping screws. The screws can be removed after the epoxy resin has cured.

[0041] Please see Figure 4 In some possible embodiments, the fixing plate 40 includes a first plate 41 and a second plate 42. The two first plates 41 are spaced apart along the length of the telescopic end and are parallel to each other. One first plate 41 is connected to the telescopic end, and the other first plate 41 has a clearance hole 411 that penetrates its own thickness. The second plate 42 is connected between the two first plates 41. The space enclosed by the second plate 42 and the two first plates 41, together with the clearance hole 411, forms a slot. When the locking block 52 is inserted into the slot, the locking block 52 and the first plate 41 with the clearance hole 411 form a limit.

[0042] In this embodiment, the shape of the fixing plate 40 is as follows: Figure 4 As shown, an accommodating space is formed between the two first plates 41, and the clearance hole 411 and the space between the two first plates 41 together form a slot. This arrangement allows the testing device provided in this application to be used for both tensile testing of insulation boards and tensile testing of insulation board fasteners.

[0043] Specifically, when used for tensile testing of insulation boards, the test method is as described above and will not be repeated here. When used for testing insulation board fasteners (insulation nails, anchor nails), the connecting plate 50 is not used. The slot of the fixing plate 40 can be used to accommodate and hold the head of the insulation board fastener. The fixing plate 40 can be used as a clamp to connect with the insulation nail and can be directly used to perform tensile testing on the insulation board fastener to check whether the installation strength of the insulation board fastener is qualified.

[0044] Please see Figure 3 In some possible embodiments, the locking block 52 includes a first locking portion 521 and a second locking portion 522. The first locking portion 521 is elongated and is located on the side of the connecting plate 50 adjacent to the first plate body 41. When the locking block 52 is inserted into the slot, the first locking portion 521 is accommodated in the clearance hole 411. The second locking portion 522 is located on the side of the first locking portion 521 away from the connecting plate 50. The second locking portion 522 extends outward along the edge of the first locking portion 521. When the locking block 52 is inserted into the slot, the second locking portion 522 abuts against the first plate body 41 with the clearance hole 411, thereby forming a limiting position.

[0045] Please see Figure 3 In some possible embodiments, to avoid epoxy resin adhesive adhering to the connecting part 51, the connecting part 51 and the connecting plate 50 are not flush, that is, the side of the connecting part 51 adjacent to the insulation board is spaced apart from the mating surface of the connecting plate 50 (i.e., the side used to mat the insulation board) by a predetermined distance (e.g., 2mm, 3mm). With this arrangement, even if a small amount of adhesive overflows from the gap between the connecting plate 50 and the insulation board, it will not stick to the connecting part 51.

[0046] When used for Figure 7 When testing the downward-sloping insulation board, the force applied by the inspector to the support frame 10 is not perpendicular to the insulation board, resulting in a horizontal component force. Under this force, the support frame 10 is prone to movement. To address this issue, a support foot 12 is installed on the side of the support 11 that contacts the insulation board. The support foot 12 is detachably connected to the support 11 and is made of a material with high frictional resistance to the insulation board, thus improving the stability between the support foot 12 and the insulation board and preventing relative movement.

[0047] To improve the stability of the connection between the support foot 12 and the insulation board, the support foot 12 has a sharp fixing cone 121 on the side that abuts against the insulation board, with the sharp end of the fixing cone 121 facing the insulation board.

[0048] It is understandable that the supporting foot 12 is detachably connected to the supporting frame 10, which can be used when encountering... Figure 7 When installing the insulation board that is tilted downwards as shown, Figure 6 and Figure 8 In the usage scenario shown, it is not easy to move even without the installation of the supporting feet 12 and the support frame 10.

[0049] In existing technologies, most building exterior walls are perpendicular to the ground. However, some architecturally designed building exteriors may have sloping facades, in which case the insulation boards are installed at an angle. When the insulation board is tilted downwards, it is not easy for the insulation board to adhere to the exterior wall, and the risk of the insulation board falling off is higher. Therefore, the insulation board in this location should be given special attention during inspection.

[0050] like Figures 6 to 7 As shown, common insulation boards for building exterior walls have three postures: vertical, tilted downward, and tilted upward. The setting angle of the support frame 10 is different under different postures, and the angle at which the inspector holds the board is also different. When the tilt angle is large, there may be problems with holding the board.

[0051] To make it easier for testing personnel to hold, the support frame 10 has a first mounting hole, which is a threaded hole, and the axis of the first mounting hole is perpendicular to the length direction of the telescopic end; the building exterior wall insulation board tensile testing device also includes a fixed handle 60, which has a second mounting hole coaxially aligned with the first mounting hole; a locking bolt 61 is inserted into the second mounting hole, and the locking bolt 61 is threadedly engaged with the first mounting hole.

[0052] The fixed handle 60 is connected to the support frame 10 as a whole by the locking bolt 61. When the locking bolt 61 is tightened, the fixed handle 60 and the support frame 10 are fixedly connected, and the inspector holds the fixed handle 60 to perform the inspection. When encountering an inclined external wall insulation board, the locking bolt 61 can be loosened to adjust the relative angle between the fixed handle 60 and the support frame 10, making the fixed handle 60 easier to hold. After adjustment, the fixed handle 60 and the support frame 10 are tightened again by the locking bolt 61 to fix them as a whole.

[0053] It is understood that the parts in the above embodiments can be freely combined or deleted to form different combined embodiments. The specific contents of each combined embodiment will not be repeated here. After this description, it can be considered that the present utility model specification has recorded each combined embodiment and can support different combined embodiments.

[0054] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tensile testing device for building exterior wall insulation boards, characterized in that, include: The support frame (10) has at least two support parts (11) for perpendicularly abutting against the insulation board; The loading mechanism (20) is provided on the support frame (10) and has a telescopic end that is perpendicular to the insulation board; A tension sensor (30) is located at the telescopic end; A fixing plate (40) is provided on the side of the tension sensor (30) away from the telescopic end. The fixing plate (40) has a slot, and the opening direction of the slot is parallel to the insulation board. as well as A connecting plate (50) is used to fit with the insulation board. The edge of the connecting plate (50) is provided with a plurality of outwardly extending connecting parts (51) at intervals along its circumference. The connecting parts (51) have connecting holes that penetrate its own thickness. The side of the connecting plate (50) adjacent to the fixing plate (40) has a locking block (52). The locking block (52) is inserted into the slot and can form a limit in the length direction of the telescopic end.

2. The tensile testing device for building exterior wall insulation boards according to claim 1, characterized in that, The fixing plate (40) includes: Two first plates (41) are spaced apart along the length of the telescopic end, the two first plates (41) are parallel to each other, one of the first plates (41) is connected to the telescopic end, and the other first plate (41) has a clearance hole (411) that penetrates its own thickness; and The second plate (42) is connected between the two first plates (41); the space enclosed by the second plate (42) and the two first plates (41) and the clearance hole (411) together form the slot. When the card block (52) is inserted into the slot, the card block (52) and the first plate (41) with the clearance hole (411) form a limit.

3. The tensile testing device for building exterior wall insulation boards according to claim 2, characterized in that, The card block (52) includes: A first latching portion (521) is provided on the side of the connecting plate (50) adjacent to the first plate body (41). When the latching block (52) is inserted into the latching slot, the first latching portion (521) is accommodated within the clearance hole (411); and The second snap-fit ​​portion (522) is provided on the side of the first snap-fit ​​portion (521) away from the connecting plate (50), and the second snap-fit ​​portion (522) extends outward along the edge of the first snap-fit ​​portion (521).

4. The tensile testing device for building exterior wall insulation boards according to claim 1, characterized in that, The side of the connecting part (51) adjacent to the insulation board is spaced at a predetermined distance from the mating surface of the connecting plate (50).

5. The tensile testing device for building exterior wall insulation boards according to claim 1, characterized in that, The connecting plate (50) is square, and a plurality of connecting parts (51) are disposed opposite each other on both sides of the connecting plate (50).

6. The tensile testing device for building exterior wall insulation boards according to claim 1, characterized in that, The loading mechanism (20) includes: A screw (21), one end of which is connected to the tension sensor (30), and the other end of which passes through the support frame (10), the screw (21) forming the telescopic end, the screw (21) and the support frame (10) slidingly engaging along their own length; and The nut (22) is rotatably mounted on the support frame (10) about its own axis and is threadedly engaged with the screw (21).

7. The tensile testing device for building exterior wall insulation boards according to claim 6, characterized in that, The nut (22) has multiple handles (23) spaced apart along its circumference.

8. The tensile testing device for building exterior wall insulation boards according to claim 1, characterized in that, The support part (11) has a support foot (12) on the side that abuts against the insulation board, and the support foot (12) is detachably connected to the support part (11).

9. The tensile testing device for building exterior wall insulation boards according to claim 8, characterized in that, The supporting foot (12) has a sharp fixing cone (121) on the side that abuts against the insulation board.

10. The tensile testing device for building exterior wall insulation boards according to claim 1, characterized in that, The support frame (10) has a first mounting hole, which is a threaded hole, and the axis of the first mounting hole is perpendicular to the length direction of the telescopic end. The building exterior wall insulation board tensile testing device also includes a fixed handle (60), which has a second mounting hole coaxially aligned with the first mounting hole; a locking bolt (61) is inserted in the second mounting hole, and the locking bolt (61) is threadedly engaged with the first mounting hole.

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