Counter-force plate for field detection of tensile adhesive strength

Abstract

A counter-force plate for field detection of tensile bonding strength belongs to the technical field of external wall insulation board bonding strength detection auxiliary equipment and comprises two resistance plates, a telescopic switching mechanism is mounted between the two resistance plates, L-shaped clamping plates are fixedly mounted on the lower surfaces of the resistance plates in a front-back symmetry manner, and the four L-shaped clamping plates are oppositely arranged. In practical application, the anti-blocking plate can replace an external wall thermal insulation material to be in contact with a frame body of a drawing instrument, lateral force parallel to a bonding surface can be prevented from being generated in the whole detection process, and it is ensured that the accuracy of a detection result is not affected. Besides, through cooperative cooperation of the telescopic switching mechanism and the four L-shaped clamping plates, stable attachment of the resistance plate and the external wall thermal insulation material can be achieved, so that the stability of the resistance plate during detection is ensured, and the detection effect is ensured.

Description

Technical Field

[0001] This utility model belongs to the technical field of auxiliary equipment for testing the bonding strength of external wall insulation boards, and specifically relates to a reaction plate for on-site testing of tensile bonding strength. Background Technology

[0002] Currently, on-site physical testing of the system bonding strength of building exterior wall insulation materials includes the bonding strength between the wall insulation material and the base layer adhesive, as well as the mechanical testing of the anchors used in exterior wall insulation and their finishing layers. On-site mechanical performance testing generally employs portable electro-hydraulic and mechanical methods. However, in actual testing, limitations imposed by the on-site testing conditions and the influence of the exterior wall surface lead to uneven stress distribution under uniform load application, resulting in deviations in the measured data and increasing work efficiency. Therefore, how to quickly, conveniently, accurately, and stably conduct on-site mechanical testing of insulation structures in insulation engineering testing remains a challenge.

[0003] According to the current national standard JGJ144-2019 "Technical Standard for External Wall Insulation Engineering", Appendix C describes the on-site test method for the tensile bond strength test between the base wall and the adhesive. Hand-cranked testers are prone to generating lateral forces parallel to the bonding surface when shaken, which can adversely affect the test results. Conversely, errors caused by unevenness of the external wall contact surface will also occur. Therefore, developing a reaction plate for on-site testing of tensile bond strength is of significant practical importance. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a reaction plate for on-site testing of tensile bond strength, which solves the problem that when testing external wall insulation materials is tested on-site, the testing instrument is directly attached to the surface of the external wall, which can easily generate lateral forces parallel to the bonding surface and affect the test results.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A reaction plate for on-site testing of tensile bond strength includes two resistance plates, a telescopic adapter mechanism is installed between the two resistance plates, L-shaped clamps are symmetrically fixedly installed on the lower surface of each resistance plate, the four L-shaped clamps are arranged opposite each other, and windows are opened through the upper surface of each resistance plate.

[0007] In the above technical solution, the telescopic adapter mechanism includes two cross-shaped adapters. Two double-headed adapter strips are rotatably installed between the near ends of the two cross-shaped adapters. A π-shaped component is slidably installed on the opposite side of each of the two cross-shaped adapters. Two springs are fixedly installed between the π-shaped component and the near cross-shaped adapter. A guide rod is installed between the π-shaped component and the near cross-shaped adapter. The guide rod is fixedly connected to the near cross-shaped adapter and slidably connected to the near π-shaped component. A connecting component is rotatably connected to the end of the π-shaped component away from the cross-shaped adapter through a rotating shaft. The connecting component is fixedly connected to the side surface of the near resistance plate by bolts.

[0008] In the above technical solution, multiple handles are fixedly installed on the upper surface of the resistance plate.

[0009] In the above technical solution, grooves are provided on opposite sides of the two resistive plates, and the width of the grooves and the distance between the two grooves are the same as the length and width of the window.

[0010] In the above technical solution, the side of the resistance plate opposite to the telescopic adapter mechanism is fixedly fitted with a handle by bolts.

[0011] The reaction plate for on-site testing of tensile bond strength of this utility model has the following advantages compared with the prior art:

[0012] In practical applications, this invention can replace the contact between the external wall insulation material and the frame of the pull-out tester. The entire testing process avoids generating lateral forces parallel to the bonding surface, ensuring that the accuracy of the test results is not affected. Furthermore, through the coordinated operation of the telescopic adapter mechanism and four L-shaped clamps, a stable bond between the resistance plate and the external wall insulation material can be achieved, thereby ensuring the stability of the resistance plate during testing and guaranteeing the testing effect. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a bottom view of the structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the structure of this utility model when it is stored and carried.

[0016] Figure 4 This is a top view of the telescopic adapter mechanism of this utility model.

[0017] Figure 5 This is an exploded structural diagram of the telescopic transfer mechanism of this utility model.

[0018] Figure 6This is a top view of the structure of this utility model.

[0019] Figures 1-6 Among them: 1. Anti-drag plate; 11. L-shaped clamp; 12. Window; 13. Handle; 14. Groove; 15. Grip; 2. Telescopic adapter mechanism; 21. Cross adapter; 22. Double-headed adapter strip; 23. π-shaped part; 24. Spring; 25. Directional rod; 26. Connector; 261. Shaft. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In this embodiment, front, back, left, right, top, and bottom are... Figure 1 Describe the reference plane. See [link / reference] Figures 1-6 This utility model provides a technical solution:

[0022] A reaction plate for on-site testing of tensile bond strength includes two resistance plates 1, each made of wood with aluminum strip edging of 4-5 cm thickness. Multiple telescopic connecting mechanisms 2 are rotatably installed between the two resistance plates 1. These mechanisms allow for easy folding and storage of the two resistance plates 1 when the reaction frame is being carried, reducing the space occupied during transport and making the entire unit more portable. Two L-shaped clamps 11 are fixedly installed on the lower surface of each resistance plate 1. The four L-shaped clamps 11 are arranged as follows: Figure 2 As shown, the relative orientation is arranged such that the distance between the two front and rear L-shaped clamps 11 is the width of the external wall insulation material, and the distance between the two left and right L-shaped clamps 11 is slightly smaller than the length of the external wall insulation material. With the cooperation of the telescopic transfer mechanism 2, it can be clamped on the outside of the external wall insulation material to be tested, thereby clamping the reaction frame as a whole on the outer surface of the external wall insulation material. The upper surface of the resistance plate 1 is provided with windows 12, and the testing instrument (pull-out instrument) can accurately test the insulation material through these windows 12.

[0023] It should be noted that, in combination Figure 1 , Figure 4 and Figure 5As shown, the telescopic adapter mechanism 2 includes two cross-shaped adapters 21. The near ends of the two cross-shaped adapters 21 are rotatably connected together by a double-headed adapter strip 22. A π-shaped component 23 is slidably installed on the opposite side of each of the two cross-shaped adapters 21. Two springs 24 are fixedly installed between the π-shaped component 23 and the near cross-shaped adapter 21. A guide rod 25 is installed between the π-shaped component 23 and the near cross-shaped adapter 21. The guide rod 25 is fixedly connected to the cross-shaped adapter 21 and slidably connected to the π-shaped component 23. After the guide rod 25 is assembled with the π-shaped component 23, a nut is welded to its outer end to prevent the guide rod 25 from disengaging from the π-shaped component 23 during its movement. The end of the π-shaped component 23 away from the cross-shaped adapter 21 is rotatably connected to a connector 26 through a rotating shaft 261. The connector 26 is fixedly connected to the side surface of the near resistance plate 1 by bolts.

[0024] By configuring a guide rod 25 and a spring 24 between the cross-shaped adapter 21 and the π-shaped component 23, the telescopic adapter 2 is ensured to have a hinge function while allowing for telescopic adjustment to accommodate different distances during operation when the four L-shaped clamps 11 are held on the outside of the exterior wall insulation material. This facilitates fixing the two resistance plates 1 to the front surface of the exterior wall insulation material using the four L-shaped clamps 11.

[0025] Several handles 13 are bolted to the upper surface of the anti-drag plate 1. With the help of these handles 13, the anti-drag plate 1 can be manipulated more conveniently to adjust its position, thereby facilitating the installation work between it and the external wall insulation material before testing.

[0026] like Figure 1 As shown, in order to increase the number of comparative experiments, grooves 14 are provided on the opposite sides of the two resistance plates 1. The width of the grooves 14 and the distance between the two grooves 14 are the same as the length and width of the window 12. By adding two grooves 14, the tensile bonding strength of the external wall insulation material can be tested again between the two grooves 14, which makes it easier to conduct three sets of experiments. After comparing the data from the three experiments, the comprehensive data obtained is more convincing.

[0027] like Figure 1 As shown, the resistance plate 1 is fixedly installed with handles 15 by bolts on the side away from the telescopic adapter mechanism 2. When the reaction frame is carried, the two resistance plates 1 are folded together and the two handles 15 are close together. By carrying the two handles 15, the reaction frame can be carried as a whole.

[0028] Working principle: In practical applications, the two resistance plates 1 are first unfolded to... Figure 1The position is shown. Next, pull the two resistance plates 1 outwards using handle 13. With the help of spring 24 and directional rod 25 in the telescopic adapter mechanism 2, adaptive elongation is achieved, thereby increasing the distance between the left and right L-shaped clamps 11. Then, place the four L-shaped clamps 11 at the four corners of the exterior wall insulation material, and press the back surface of the resistance plate 1 tightly against the front surface of the exterior wall insulation material. After that, release the pulling force on the resistance plate 1. The telescopic adapter mechanism 2 shortens and returns to its original position under the drive of spring 24. At the same time, the four L-shaped clamps 11 move inwards and clamp onto the outer surface of the exterior wall insulation material. At this time, through window 12, a standard block is pasted onto the exterior wall insulation material to be tested using high-strength adhesive. Then, use a knife to cut the exterior wall insulation material according to the size of the standard block, leaving only the side that is bonded to the wall. Then, the frame of the pull-out tester used to test the tensile bond strength is attached to the outer surface of the resistance plate 1, and the telescopic end of the pull-out tester is connected to the standard block before testing.

[0029] Compared to existing technologies, this method replaces direct contact with the external wall insulation material by attaching the frame of the pull-out tester to the outer surface of the resistance plate 1. Then, the tensile end of the tester is glued to the external wall insulation material before tensile testing. This process avoids generating lateral forces parallel to the bonding surface, ensuring the test results remain unaffected. Simultaneously, the synergistic effect of the telescopic adapter 2 and the four L-shaped clamps 11 ensures a secure bond between the resistance plate 1 and the external wall insulation material.

Claims

1. A reaction plate for on-site testing of tensile bond strength, comprising two resistance plates (1), characterized in that, A telescopic adapter (2) is installed between the two resistance plates (1). L-shaped clamps (11) are fixedly installed symmetrically on the lower surface of each resistance plate (1). The four L-shaped clamps (11) are arranged opposite to each other. A window (12) is opened through the upper surface of each resistance plate (1).

2. The reaction plate for on-site testing of tensile bond strength according to claim 1, characterized in that, The telescopic adapter mechanism (2) includes two cross-shaped adapters (21). Two double-headed adapter strips (22) are rotatably installed between the near ends of the two cross-shaped adapters (21). A π-shaped component (23) is slidably installed on the opposite side of the two cross-shaped adapters (21). Two springs (24) are fixedly installed between the π-shaped component (23) and the near cross-shaped adapter (21). A guide rod (25) is installed between the π-shaped component (23) and the near cross-shaped adapter (21). The guide rod (25) is fixedly connected to the near cross-shaped adapter (21), and the guide rod (25) is slidably connected to the near π-shaped component (23). The end of the π-shaped component (23) away from the cross-shaped adapter (21) is rotatably connected to a connector (26) through a pivot (261). The connector (26) is fixedly connected to the side surface of the near resistance plate (1) by bolts.

3. The reaction plate for on-site testing of tensile bond strength according to claim 1, characterized in that, Multiple handles (13) are fixedly installed on the upper surface of the resistance plate (1).

4. The reaction plate for on-site testing of tensile bond strength according to claim 1, characterized in that, The two resistive plates (1) each have a groove (14) on one side opposite to each other. The width of the groove (14) and the distance between the two grooves (14) are the same as the length and width of the window (12).

5. A reaction plate for on-site testing of tensile bond strength according to claim 1, characterized in that, Each of the resistance plates (1) has a handle (15) fixedly installed on the side opposite to the telescopic adapter (2) by bolts.

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