A prefabricated pull-out test adhesive standard block fixing device and method

Abstract

This invention discloses a prefabricated method and device for fixing a bonded standard block for pull-out testing, relating to the field of building engineering testing. It includes a support device and a stabilizing device. The support device comprises two symmetrically arranged sliding struts, each with a fixed part at a predetermined angle to the test wall at one end. The sliding struts pass through the support frame and are slidably connected. A sliding fastener is installed inside the support frame, engaging with a toothed part on the back of the sliding strut. The stabilizing device includes a telescopic rod connected to the support frame, with a stabilizing frame connected between the two telescopic rods via a telescopic fastener. A stabilizing spring is installed on the underside of the stabilizing frame. A stabilizing nut passes through the stabilizing frame perpendicular to the test wall to fix the bonded standard block. This invention allows for free assembly and disassembly, can be operated by a single person, and greatly improves the stability and convenience of fixing the bonded plate in pull-out testing.

Description

Technical Field

[0001] This invention relates to the field of building engineering testing, and in particular to a prefabricated pull-out test adhesive standard block fixing device and method. Background Technology

[0002] In the field of construction engineering, especially in plastering, bricklaying, and adhesive reinforcement projects (such as external fiber composite reinforcement, external steel plate or steel profile reinforcement), the tensile bond strength of the plaster layer, the adhesive strength of the facing bricks, and the tensile bond strength between the reinforcement material and the substrate are important indicators for measuring the quality of construction. These are also key control items for construction quality acceptance as stipulated in national and industry standards such as the "Technical Specification for Plastering Mortar" JGJ / T220, the "Standard for Acceptance of Construction Quality of Building Decoration and Renovation Engineering" GB 50210, and the "Code for Acceptance of Construction Quality of Building Structure Reinforcement Engineering" GB50550-2010.

[0003] Relevant regulations stipulate that the bonding strength quality must be tested on-site through a pull-out test. This involves fixing test standard blocks of different sizes (40mm×40mm, 45mm*95mm, 100mm*100mm, etc.) to the bonding material with adhesive. After the adhesive has fully cured, the bonding strength is measured on-site using a professional pull-out tester. The on-site pull-out failure mode and measured force value determine whether the bonding quality meets the requirements. Since the test standard blocks are made of iron, they need to be fixed to the substrate with adhesive. During on-site testing, especially when bonding standard blocks to beam sides and slab bottoms, after applying the adhesive, testing personnel often need to climb to a height and press down on the standard blocks to maintain stability between the standard blocks and the substrate until the adhesive is fully cured. This process is time-consuming, labor-intensive, and cannot guarantee the quality of the standard block bonding. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide an assembled pull-out test bonding standard block fixing device and method, which enables free assembly and disassembly, can be operated by one person alone, and greatly improves the stability and convenience of fixing the pull-out test bonding plate.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0006] In a first aspect, embodiments of the present invention provide an assembled pull-out test adhesive standard block fixing device, comprising:

[0007] The support device includes two symmetrically arranged sliding struts. One end of the sliding strut is fitted with the test wall and has a fixed part that forms a set angle with it. The sliding strut passes through the support frame and the two are slidably connected. A sliding fastener is installed inside the support frame and engages with the toothed part on the back of the sliding strut.

[0008] The stabilizing device includes telescopic rods connected to the support frame, a stabilizing frame connected between two telescopic rods by a telescopic fastener, and a stabilizing spring installed on the underside of the stabilizing frame; a stabilizing nut passes through the stabilizing frame in a direction perpendicular to the test wall to fix the bonding standard block.

[0009] As a further implementation, the sliding fastener includes a fixing card, a sliding paddle concentrically connected to the fixing card, the sliding paddle engaging with the teeth on the back side of the sliding support rod, and a distributing spring connecting the sliding paddle and the support frame.

[0010] As a further implementation, the sliding paddle is connected to the fixed card via a fixing pin, and the fixed card has an adjustment part.

[0011] As a further implementation, the fixing part is also provided with teeth, and the teeth are located on the same side as the teeth of the sliding strut.

[0012] As a further implementation, the fixing part is wedge-shaped.

[0013] As a further implementation, the telescopic fixing device has a moving groove inside, into which the telescopic rod extends; the telescopic fixing device and the telescopic rod are connected by a positioning nut.

[0014] As a further implementation, the stabilizing nut and the stabilizing bracket are connected by threads.

[0015] As a further implementation, the end of the stabilizing nut is rounded.

[0016] Secondly, embodiments of the present invention also provide a method for fixing an assembled pull-out test adhesive standard block, employing the aforementioned device, comprising:

[0017] The bonding standard block is fixed to the test specimen position with glue;

[0018] Install the two sliding struts with their teeth facing outwards and parallel to the pre-cut grooves on the sample.

[0019] Slowly press the device to the appropriate position to fix the bonding standard block to the sample;

[0020] Tighten the nut to secure the standard block again.

[0021] As a further implementation method, the location of the test sample is drawn with reference to the size of the carbon fiber bonded standard block, and a groove is cut on the surface of the sample using a cutting machine.

[0022] The beneficial effects of this invention are as follows:

[0023] (1) The present invention includes a support device and a stabilizing device. The entire fixing device is fixed to the surface of the test wall by the support device, and the adhesive plate is fixed by the stabilizing device. The support device and the stabilizing device can be freely assembled and disassembled, and one person can operate them alone, which greatly improves the stability and convenience of fixing the adhesive plate in the pull-out test.

[0024] (2) The sliding support rod of the present invention is provided with a tooth shape on the outside. The sliding support rod is controlled to slide up and down by the sliding paddle in the sliding fixture. The support frame can slide into the sliding support rod in one direction. The sliding paddle is locked in the serrated groove of the sliding support rod to prevent it from falling off. When removing the device, the sliding paddles on both sides need to be pressed to remove it. A wedge-shaped fixing part is provided at the bottom of the sliding support rod. The wedge-shaped fixing part has a certain angle. After pressing, it is fixed to the cutting groove on the sample surface. Attached Figure Description

[0025] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0026] Figure 1 This is a front view of the present invention according to one or more embodiments;

[0027] Figure 2 This is a perspective view of the present invention according to one or more embodiments;

[0028] Figure 3 This is a top view of the present invention according to one or more embodiments;

[0029] Figure 4 This is a schematic diagram of the sliding strut structure according to one or more embodiments of the present invention;

[0030] Figure 5 This is a schematic diagram of the sliding fastener structure according to one or more embodiments of the present invention;

[0031] Figure 6 This is a schematic diagram of the sliding strut installation according to one or more embodiments of the present invention;

[0032] Figure 7 This is a schematic diagram of the installation of the stabilizing frame, telescopic fixator, and stabilizing spring according to one or more embodiments of the present invention;

[0033] Figure 8 This is a schematic diagram of a nut fixing according to one or more embodiments of the present invention;

[0034] Figure 9 This is a schematic diagram of the connection between the support frame and the telescopic rod according to one or more embodiments of the present invention.

[0035] Among them, 1. stabilizing nut; 2. stabilizing frame; 3. telescopic fixing device; 4. positioning nut; 5. stabilizing spring; 6. telescopic rod; 7. support frame; 8. sliding strut; 9. sliding fixing device; 10. fixing clip; 11. sliding paddle; 12. distributing spring; 13. fixing pin; 14. retaining ring; 15. fixing part; 16. channel; 17. adjusting part; 18. moving groove; 19. mounting groove. Detailed Implementation

[0036] Example 1:

[0037] This embodiment provides an assembled pull-out test adhesive standard block fixing device, such as... Figures 1-3 As shown, it includes a support device and a stabilizing device. The support device includes two symmetrically arranged sliding struts 8. One end of each sliding strut 8 has a fixing part 15 at a set angle to it. By pressing the fixing part 15, the sliding strut 8 is fixed to the cutting groove on the surface of the sample.

[0038] like Figure 6 As shown, the fixing part 15 has a wedge-shaped structure, one end of which is fixed to the sliding support rod 8, and there is a certain gap between the two. Press the fixing part 15 to bring it close to the sliding support rod 8, and release the fixing part 15 to reset it.

[0039] The support device also includes a sliding fastener 9, a support frame 7, and a telescopic rod 6. Each sliding rod 8 cooperates with a support frame 7. In this embodiment, the support frame 7 is a cuboid structure with a through channel 16 inside. The sliding rod 8 passes through the channel 16 of the support frame 7. The telescopic rod 6 is connected to the inside of the support frame 7 and is horizontally set. A stabilizing device is connected between the two telescopic rods 6. The telescopic rod 6, the support frame 7, and the sliding rod 8 enable the stabilizing device to move up and down and left and right.

[0040] A sliding fastener 9 is installed in the support frame 7 to limit the position of the support frame 7. For example... Figure 1 and Figure 5 As shown, the sliding fastener 9 includes a fixing card 10, a sliding paddle 11, and a disengaging spring 12. The fixing card 10 is installed in the support frame 7 and located outside the sliding strut 8. The fixing card 10 is installed by opening an installation groove 19 on the outside of the support frame 7 that communicates with the channel 16.

[0041] The shape of the fixed card 10 can be set according to the actual situation, as long as an adjustment part 17 is formed on its outer side. The adjustment part 17 is a part that protrudes from the support frame 7. The fixed card 10 is rotatably connected to the support frame 7, and one end of the sliding paddle 11 is connected to a certain position of the fixed card 10, such as the center position. The sliding paddle 11 is connected to the fixed card 10 through the fixing pin 13, and the position of the sliding paddle 11 can be changed by pressing the adjustment part 17.

[0042] like Figure 1 As shown, the other end of the sliding paddle 11 is connected to the top of the mounting slot 19 via a paddle spring 12, as... Figure 9 As shown, a stepped groove is formed at the top of the mounting slot 19, and the shift spring 12 is connected to the groove. Pressing the adjustment part 17 moves the sliding paddle 11 toward the groove side, canceling the pressing action, and the sliding paddle 11 returns to its original position under the action of the shift spring 12.

[0043] like Figure 4 As shown, the outer side of the sliding support rod 8 has a toothed shape, and the sliding paddle 11 engages with the toothed shape to lock the sliding support rod 8. Pressing the adjustment part 17 can release the locking function. The outer side of the fixing part 15 also has a toothed shape.

[0044] like Figure 7 As shown, the stabilizing device includes a stabilizing nut 1, a stabilizing frame 2, a telescopic fixing device 3, and a stabilizing spring 5. The telescopic rod 6 is connected to the stabilizing frame 2 through the telescopic fixing device 3. The structure of the stabilizing frame 2 can be arbitrarily set, and it has a threaded hole along the vertical direction, which is matched with the thread of the stabilizing nut 1.

[0045] The telescopic fixing device 3 is symmetrically installed on both sides of the stabilizing frame 2. The telescopic fixing device 3 includes a fixing body. The fixing body has a moving groove 18 for accommodating the telescopic rod 6. The telescopic rod 6 is inserted into the moving groove 18. After the lateral distance adjustment is completed, it is locked by multiple positioning nuts 4. The telescopic rod 6, together with the telescopic fixing device 3, realizes the distance adjustment between the two sliding support rods 8, which can adapt to the bonding standard blocks of different sizes.

[0046] The bottom surface of the stabilizing frame 2 is connected to a stabilizing spring 5 via a retaining ring 14, which works in conjunction with the stabilizing nut 1 to press the adhesive standard block firmly. Figure 8 As shown, the top of the bonding standard block is provided with a nut that mates with the end of the stabilizing nut 1. The end of the stabilizing nut 1 has an arc-shaped structure, which can prevent the stabilizing nut 1 from directly contacting the bonding standard block and causing damage to the bonding standard block.

[0047] The installation process in this embodiment is as follows:

[0048] First, install the sliding support rod 8, then assemble the sliding fastener 9. Connect the support device and the mounting device together through the telescopic fastener 3, and fix the bonding standard block by using the mounting device to stabilize the spring 5 and the nut 1.

[0049] Install the sliding paddle 11 onto the fixing card 10, fix the sliding paddle 11 with the fixing pin 13, connect the dispensing spring 12 to the sliding paddle 11, install the assembled sliding retainer 9 into the mounting slot 19, and control the rotation by the dispensing spring 12.

[0050] In this embodiment, the support frame 7 and the telescopic rod 6 are integrally injection molded, serving as a connecting part to link the support device and the mounting device together. The support frame 7 and the stabilizing frame 2 are connected by a telescopic fastener 3. Each side of the telescopic fastener 3 is controlled by multiple positioning nuts 4. The spacing between the two sides of the support frame 7 is adjusted to match the sliding strut 8, and the sliding fastener 9 controls the sliding of the support frame 7.

[0051] The sliding support rod 8 is injection molded as a whole. The sliding support rod 8 is controlled to slide up and down by the sliding paddle 11 in the sliding retainer 9. The support frame 7 can slide into the sliding support rod 8 in one direction. The sliding paddle 11 is locked in the tooth shape of the sliding support rod 8 to prevent it from falling off. When removing the device, the sliding paddles 11 on both sides need to be pressed to lock it out.

[0052] Two sliding struts 8 are installed parallel to each other with their teeth facing outward into the pre-cut groove of the sample. The stabilizing spring 5 can be removed and replaced. It is selected according to the size of the carbon fiber bonding standard block (40*40) and connected to the stabilizing frame 2 through the embedded retaining ring 14.

[0053] Select a suitable stabilizing spring 5 for the carbon fiber bonding standard block and install the stabilizing spring 5 onto the stabilizing frame 2; combine the support device and the stabilizing device together, and connect the combined device to the sliding support rod 8 through the support frame 7. Insert the sliding support rod 8 into the support frame 7, slowly press the device to the appropriate position, and fix the bonding standard block on the sample.

[0054] Finally, tighten the securing nut 1 to fix the adhesive standard block again.

[0055] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A prefabricated pull-out test adhesive standard block fixing device, characterized in that, include: The support device includes two symmetrically arranged sliding struts. One end of the sliding strut is fitted with the test wall and has a fixed part that forms a set angle with it. The sliding strut passes through the support frame and the two are slidably connected. A sliding fastener is installed inside the support frame and engages with the toothed part on the back of the sliding strut. The stabilizing device includes a telescopic rod connected to the support frame, a stabilizing frame connected between two telescopic rods by a telescopic fastener, and a stabilizing spring installed on the underside of the stabilizing frame; a stabilizing nut passes through the stabilizing frame in a direction perpendicular to the test wall to fix the bonding standard block. The sliding fastener includes a fixing card and a sliding paddle connected concentrically to the fixing card. The sliding paddle engages with the toothed part on the back of the sliding support rod, and a distributing spring connects the sliding paddle to the support frame. The fixing part also has teeth, and the teeth are on the same side as the teeth of the sliding support rod; the fixing part is wedge-shaped, one end of which is fixed to the sliding support rod, and there is a gap between the two. Press the fixing part to bring it close to the sliding support rod, and release the fixing part to reset it.

2. The assembled pull-out test adhesive standard block fixing device according to claim 1, characterized in that, The sliding paddle is connected to the fixed card by a fixing pin, and the fixed card has an adjustment part.

3. The assembled pull-out test adhesive standard block fixing device according to claim 1, characterized in that, The telescopic fixing device has a movable groove inside, and the telescopic rod extends into the movable groove; the telescopic fixing device and the telescopic rod are connected by a positioning nut.

4. The assembled pull-out test adhesive standard block fixing device according to claim 1, characterized in that, The stabilizing nut and the stabilizing bracket are connected by threads.

5. The assembled pull-out test adhesive standard block fixing device according to claim 4, characterized in that, The end of the stabilizing nut is rounded.

6. A method for fixing a prefabricated pull-out test adhesive standard block, characterized in that, The apparatus as described in any one of claims 1-5 comprises: The bonding standard block is fixed to the test specimen position with glue; Install the two sliding struts with their teeth facing outwards and parallel to the pre-cut grooves on the sample. Slowly press the device to the appropriate position to fix the bonding standard block to the sample; Tighten the nut to secure the standard block again.

7. The method for fixing a prefabricated pull-out test adhesive standard block according to claim 6, characterized in that, Draw the position of the sample to be tested with reference to the size of the carbon fiber bonding standard block, and cut grooves on the surface of the sample with a cutting machine.

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