A tool for detecting cracks in water conservancy dams

Abstract

This utility model relates to the technical field of water conservancy engineering testing equipment, specifically disclosing an auxiliary tool for detecting cracks in water conservancy dams. The tool includes a dam body and an auxiliary positioning component. The auxiliary positioning component is disposed on the upper part of the dam body and is used to limit the displacement of metal positioning blocks. The auxiliary positioning component includes a base, with a first groove symmetrically formed on one side of the base. The inner cavity of the first groove is slidably connected to an adjacent metal positioning block. When adhering the metal positioning block to the vicinity of a crack in the dam body, firstly, the base is placed on the surface of the dam body according to the crack location, ensuring that the placement direction of the base is perpendicular to the crack direction. Then, the auxiliary positioning component is firmly fixed to the dam body using the adsorption components on both sides. Next, the metal positioning block slidably connected in the first groove is pushed, causing it to move towards the dam body surface along a preset guide rod direction, achieving precise symmetrical positioning of the two metal positioning blocks perpendicular to the crack direction.

Description

Technical Field

[0001] This utility model relates to the technical field of water conservancy engineering testing equipment, specifically an auxiliary tool for detecting cracks in water conservancy dams. Background Technology

[0002] As a crucial infrastructure, water conservancy dams endure various complex loads such as water pressure, temperature changes, and foundation settlement over long periods, making them highly susceptible to developing cracks on their structural surfaces. If these cracks are not detected and their development assessed in a timely manner, they may gradually evolve into structural damage, seriously threatening the safe operation of the dam and even leading to catastrophic consequences such as dam failure. Therefore, regular and accurate monitoring of dam cracks is a key aspect of ensuring their safety and durability. Currently, a common crack monitoring method involves symmetrically embedding metal markers on both sides of the crack and periodically measuring the change in distance between the two markers using vernier calipers to determine the degree of crack opening and closing. This method is widely used in on-site monitoring due to its ease of operation, low cost, and ability to provide intuitive data.

[0003] However, in actual operation, the quality of the metal marker installation directly affects the accuracy of the measurement results. Adhesive is usually used to fix the markers on the dam surface, but during the bonding process, the markers are prone to tilting or shifting due to improper operation or adhesive flow, resulting in inaccurate reference positions and affecting the reliability of subsequent measurement data. Once the markers are tilted, not only is it necessary to readjust their positions, but it is also necessary to clean the residual adhesive and surface debris at the original bonding site to ensure that the new bonding interface is flat and clean. This process is time-consuming and labor-intensive, reducing the efficiency of on-site testing. To address this, we propose an auxiliary tool for detecting cracks in hydraulic dams. Utility Model Content

[0004] The purpose of this utility model is to provide an auxiliary tool for detecting cracks in water conservancy dams, so as to solve the problem mentioned in the background art that metal markers are prone to tilting and shifting when fixed by adhesive, resulting in inaccurate measurement benchmarks and time-consuming and laborious repeated adjustments.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an auxiliary tool for detecting cracks in water conservancy dams, comprising: a dam body;

[0006] It also includes: two metal positioning blocks, which are set on the upper part of the dam body and are used to locate cracks on the dam body;

[0007] An auxiliary positioning component is installed on the upper part of the dam body. The auxiliary positioning component is used to limit the displacement of the metal positioning block. The auxiliary positioning component includes a base. A first sliding groove is symmetrically opened on one side of the base. The inner cavity of the first sliding groove is slidably connected to the adjacent metal positioning block. Several guide rods are fixedly connected to the inner cavity of the first sliding groove. The guide rods are slidably connected to the adjacent metal positioning block.

[0008] Two adsorption components are located on both sides of the base and are used to fix the auxiliary positioning components to the dam body.

[0009] The metal positioning block has a reference groove at the upper end, a protective film attached to the lower end, and a slot on the side of the metal positioning block near the base.

[0010] Each guide rod has a limiting component in the middle of its inner cavity. The limiting component is used to limit the position of the metal positioning block in the inner cavity of the first slide groove. The limiting component includes a housing fixedly connected to the inner wall of the guide rod, a first limiting rod fixedly connected to the middle of the housing, a locking block slidably connected to the inner cavity of the housing, the locking block slidably connected to the first limiting rod, and a first spring provided in the inner cavity of the housing. The two sides of the first spring are fixedly connected to the side of the locking block away from the metal positioning block and the side of the inner wall of the housing away from the metal positioning block, respectively.

[0011] The base has symmetrically arranged second sliding grooves at its lower part, and the inner cavity of the second sliding groove is connected to the inner cavity of the first sliding groove. Each second sliding groove has a pull rod slidably connected to it, and the pull rod is slidably connected to the base. Each second sliding groove has a second spring, and the second spring is wrapped around the outer surface of the pull rod. Each pull rod has a limit slider fixedly connected to the side of the pull rod near the metal positioning block. The two sides of the second spring are respectively fixedly connected to the side of the limit slider away from the metal positioning block and the side of the inner wall of the second sliding groove away from the metal positioning block.

[0012] The limiting sliders are symmetrically and fixedly connected to the sliding blocks, and the sliding blocks are slidably connected to the inner cavity of the adjacent second slide groove.

[0013] The adsorption assembly includes a connecting block fixedly connected to the base, a connecting cylinder fixedly connected to the middle of the connecting block, a suction cup fixedly connected to the lower end of the connecting cylinder, a piston slidably connected to the inner cavity of the connecting cylinder, a threaded bolt rotatably connected to the upper part of the piston, the threaded bolt being threadedly connected to the connecting cylinder, two air exchange pipes fixedly connected to the side of the connecting block away from the base, and the inner cavity of the air exchange pipes communicating with the inner cavity of the connecting cylinder, and a plug inserted into the inner cavity of the air exchange pipe near the suction cup.

[0014] The piston has a second limiting rod fixedly connected to one side of its upper end. The second limiting rod is slidably connected to the connecting cylinder. The upper end of the threaded bolt has a handle fixedly connected to it, and the outer surface of the handle has several anti-slip textures.

[0015] This utility model has at least the following beneficial effects:

[0016] When adhering the metal positioning blocks to the vicinity of the dam cracks, firstly, the base is placed on the dam surface according to the crack location, ensuring that the placement direction of the base is perpendicular to the crack direction. Then, the auxiliary positioning components are firmly fixed to the dam using the adsorption components on both sides. Next, the metal positioning blocks slidably connected in the first groove are pushed, moving them towards the dam surface along the preset guide rod direction, achieving precise symmetrical positioning of the two metal positioning blocks perpendicular to the crack direction. After the position setting of the metal positioning blocks is completed and the adhesive fixation is completed, the fixation of the auxiliary positioning components by the adsorption components can be released first, and then the entire auxiliary positioning component can be horizontally slid off from the metal positioning blocks, thereby achieving separation from the already adhered metal positioning blocks. Subsequently, the auxiliary positioning component can be reused to install and position the next pair of new metal positioning blocks. Through the synergistic effect of the adsorption components, the first groove, and the guide rod, the stability and alignment accuracy of the metal positioning block adhesion process are ensured, effectively avoiding the skewing problem caused by manual operation or adhesive flow. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present utility model. Figure 1 ;

[0018] Figure 2 This is a partial structural diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the overall structure of the present utility model. Figure 2 ;

[0020] Figure 4 This is a schematic diagram of the auxiliary positioning component of this utility model;

[0021] Figure 5 This is a schematic diagram of the metal positioning block of this utility model;

[0022] Figure 6 This is a schematic diagram of the pull rod of this utility model;

[0023] Figure 7 This is a schematic diagram of the limiting component of this utility model;

[0024] Figure 8 This is a schematic diagram of the limiting slider of this utility model;

[0025] Figure 9 This is a schematic diagram of the adsorption component of this utility model.

[0026] In the diagram: 1. Dam body; 2. Metal positioning block; 21. Reference groove; 22. Slot; 23. Protective membrane; 3. Auxiliary positioning component; 31. Base; 32. First slide groove; 33. Guide rod; 34. Limiting component; 341. Outer shell; 342. First limiting rod; 343. First spring; 344. Locking block; 35. Pull rod; 351. Second spring; 352. Limiting slider; 353. Sliding block; 36. Second slide groove; 4. Adsorption component; 41. Connecting block; 42. Connecting cylinder; 421. Suction cup; 43. Handle; 44. Threaded bolt; 45. Piston; 46. Air exchange pipe; 47. Plug; 48. Second limiting rod. Detailed Implementation

[0027] 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.

[0028] Example 1

[0029] Please see Figures 1 to 9 This utility model provides a technical solution: an auxiliary tool for detecting cracks in water conservancy dams, comprising: dam body 1;

[0030] It also includes: two metal positioning blocks 2, which are set on the upper part of the dam body 1 and are used to locate the cracks on the dam body 1;

[0031] The auxiliary positioning component 3 is set on the upper part of the dam body 1. The auxiliary positioning component 3 is used to limit the displacement of the metal positioning block 2. The auxiliary positioning component 3 includes a base 31. A first sliding groove 32 is symmetrically opened on one side of the base 31. The inner cavity of the first sliding groove 32 is slidably connected to the adjacent metal positioning block 2. A number of guide rods 33 are fixedly connected to the inner cavity of the first sliding groove 32. The guide rods 33 are slidably connected to the adjacent metal positioning block 2.

[0032] Two adsorption components 4 are disposed on both sides of the base 31. The adsorption components 4 are used to fix the auxiliary positioning component 3 to the dam body 1.

[0033] When attaching the metal positioning block 2 to the vicinity of the crack in the dam body 1, the base 31 is first placed on the surface of the dam body 1 according to the location of the crack, and the placement direction of the base 31 is ensured to be perpendicular to the direction of the crack. Then, the auxiliary positioning component 3 is firmly fixed to the dam body 1 using the adsorption components 4 on both sides. Next, the metal positioning block 2 slidably connected in the first groove 32 is pushed to move towards the surface of the dam body 1 along the direction of the preset guide rod 33, so as to achieve precise symmetrical positioning of the two metal positioning blocks 2 in the direction perpendicular to the crack. After the position setting of the metal positioning block 2 is completed and the adhesive fixation is completed, the fixation of the auxiliary positioning component 3 by the adsorption component 4 can be released first, and then the entire auxiliary positioning component 3 can be slid horizontally off the metal positioning block 2, thereby achieving separation from the attached metal positioning block 2. After that, the auxiliary positioning component 3 can be reused to install and position the next pair of new metal positioning blocks 2. Through the synergistic effect of the adsorption component 4, the first groove 32, and the guide rod 33, the stability and alignment accuracy of the metal positioning block 2 during the pasting process are ensured, and the skewing problem caused by manual operation or adhesive flow is effectively avoided.

[0034] Meanwhile, the detachable and reusable nature of the auxiliary positioning component 3 improves on-site operation efficiency, reduces material waste, and realizes the standardization, speed and high precision of crack detection point installation, which is especially suitable for multi-point and large-scale water conservancy dam crack monitoring operations.

[0035] The metal positioning block 2 has a reference groove 21 on its upper end, a protective film 23 is adhered to its lower end, and a slot 22 is provided on the side of the metal positioning block 2 near the base 31. The adsorption assembly 4 includes a connecting block 41 fixedly connected to the base 31, a connecting cylinder 42 fixedly connected to the middle of the connecting block 41, a suction cup 421 fixedly connected to the lower end of the connecting cylinder 42, a piston 45 slidably connected to the inner cavity of the connecting cylinder 42, and a threaded bolt 44 rotatably connected to the upper part of the piston 45. 4 is threadedly connected to the connecting cylinder 42. Two air exchange pipes 46 are fixedly connected to the side of the connecting block 41 away from the base 31, and the inner cavity of the air exchange pipe 46 is connected to the inner cavity of the connecting cylinder 42. A plug 47 is inserted into the inner cavity of the air exchange pipe 46 near the suction cup 421. A second limiting rod 48 is fixedly connected to one side of the upper end of the piston 45. The second limiting rod 48 is slidably connected to the connecting cylinder 42. A handle 43 is fixedly connected to the upper end of the threaded bolt 44, and several anti-slip textures are formed on the outer surface of the handle 43.

[0036] When it is necessary to fix the two metal positioning blocks 2 to the vicinity of the gap on the dam body 1, first clean the installation area on both sides of the crack with a wire brush and sandpaper to remove dust and loose materials. Then, place the base 31 on the surface of the dam body 1 according to the crack location, ensuring that the placement direction of the base 31 is perpendicular to the crack direction. Then, the user rotates the handle 43, which drives the threaded bolt 44 to rotate. Since the connecting cylinder 42 and the threaded bolt 44 are threadedly connected, the threaded bolt 44 can move upward when it rotates, which in turn drives the piston 45 in the inner cavity of the connecting cylinder 42. Sliding upwards, the piston 45 is limited by the second limiting rod 48 when the threaded bolt 44 rotates, preventing the piston 45 from rotating with the threaded bolt 44. Then, the air in the inner cavity of the suction cup 421 is extracted, creating a negative pressure in the inner cavity of the suction cup 421, so that the suction cup 421 can be adsorbed onto the surface of the dam body 1. The gas located above the piston 45 will be discharged from the inner cavity of the connecting cylinder 42 through the inner cavity of the upper ventilation pipe 46, so that the base 31 can be fixed near the crack of the dam body 1 using the adsorption assembly 4.

[0037] After fixing the base 31, the user needs to fix the two metal positioning blocks 2 near the crack in the dam body 1. The user applies force to the protective film 23 at the lower end of the metal positioning block 2 to separate the protective film 23 from the metal positioning block 2, exposing the glue at the lower end of the metal positioning block 2. Then, the user applies a downward force to the metal positioning block 2, causing the metal positioning block 2 to slide downward along the direction of the guide rod 33. Then, the user uses glue to fix the metal positioning block 2 near the crack in the dam body 1. After fixing the position of the metal positioning block 2, the user applies force to the plug 47 to pull the plug 47 out of the inner cavity of the air pipe 46, allowing the outside air to flow into the inner cavity of the connecting cylinder 42, releasing the suction cup 421 from the surface of the dam body 1. Then, the user separates the auxiliary positioning component 3 from the metal positioning block 2, thus completing the fixing of the position of the two metal positioning blocks 2. Afterward, the user can periodically measure the distance between the two reference slots 21 using a vernier caliper.

[0038] Example 2

[0039] Each guide rod 33 has a limiting component 34 in the middle of its inner cavity. The limiting component 34 is used to limit the position of the metal positioning block 2 in the inner cavity of the first slide groove 32. The limiting component 34 includes a housing 341 fixedly connected to the inner wall of the guide rod 33. A first limiting rod 342 is fixedly connected to the middle of the housing 341. A locking block 344 is slidably connected to the inner cavity of the housing 341. The locking block 344 is slidably connected to the first limiting rod 342. A first spring 343 is provided in the inner cavity of the housing 341. The two sides of the first spring 343 are fixedly connected to the side of the locking block 344 away from the metal positioning block 2 and the side of the inner wall of the housing 341 away from the metal positioning block 2, respectively. A second slide groove 36 is symmetrically opened at the lower part of the base 31. The inner cavity of the second slide groove 36 is connected to the inner cavity of the first slide groove 32. Each inner cavity of the second slide groove 36 is slidably connected to a pull rod 35, and the pull rod 35 is slidably connected to the base 31. Each inner cavity of the second slide groove 36 is provided with a second spring 351, and the second spring 351 is wound around the outer surface of the pull rod 35. Each pull rod 35 is fixedly connected to a limit slider 352 on the side near the metal positioning block 2. The two sides of the second spring 351 are respectively fixedly connected to the side of the limit slider 352 away from the metal positioning block 2 and the side of the inner wall of the second slide groove 36 away from the metal positioning block 2. Each limit slider 352 is symmetrically fixedly connected to a sliding block 353, and the sliding block 353 is slidably connected to the adjacent inner cavity of the second slide groove 36.

[0040] After the two metal positioning blocks 2 are positioned and fixed, the two new metal positioning blocks 2 can be installed in the inner cavities of the two first sliding grooves 32. During the installation process, the metal positioning blocks 2 will apply force to the adjacent locking blocks 344, causing the locking blocks 344 to slide towards the side of the first spring 343, and then causing the first spring 343 to retract. When the locking blocks 344 contact the inner cavity of the slot 22, under the elastic force of the first spring 343, the first spring 343 will extend, and then the locking blocks 344 can be pushed into the inner cavity of the slot 22. Thus, through the cooperation of the locking blocks 344 and the slot 22, the position of the metal positioning blocks 2 in the inner cavity of the first sliding groove 32 is initially defined.

[0041] Next, the user releases the force applied to the pull rod 35. Then, under the elastic force of the second spring 351, the second spring 351 will extend, which will push the limiting slider 352 to slide towards one side of the guide rod 33. Then, the sliding block 353 will slide in the inner cavity of the second slide groove 36. Through the contact between the limiting slider 352 and the inner wall of the first slide groove 32, the metal positioning block 2 located on the upper side of the limiting slider 352 can be limited, preventing the metal positioning block 2 from falling out of the inner cavity of the first slide groove 32 and affecting the positioning and fixing of the metal positioning block 2 to the cracks in other positions of the dam body 1.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An auxiliary tool for detecting cracks in hydraulic dams, comprising: Dam body; Its features include: two metal positioning blocks, which are disposed on the upper part of the dam body and are used to locate cracks on the dam body; An auxiliary positioning component is disposed on the upper part of the dam body. The auxiliary positioning component is used to limit the displacement of the metal positioning block. The auxiliary positioning component includes a base. A first sliding groove is symmetrically opened on one side of the base. The inner cavity of the first sliding groove is slidably connected to the adjacent metal positioning block. A plurality of guide rods are fixedly connected to the inner cavity of the first sliding groove. The guide rods are slidably connected to the adjacent metal positioning block. Two adsorption components are disposed on both sides of the base, and the adsorption components are used to fix the auxiliary positioning component to the dam body.

2. The auxiliary tool for detecting cracks in water conservancy dams according to claim 1, characterized in that: The metal positioning block has a reference groove at its upper end, a protective film is attached to its lower end, and a slot is provided on the side of the metal positioning block near the base.

3. The auxiliary tool for detecting cracks in water conservancy dams according to claim 1, characterized in that: Each guide rod has a limiting component in the middle of its inner cavity. The limiting component is used to limit the position of the metal positioning block in the inner cavity of the first slide groove. The limiting component includes a housing fixedly connected to the inner wall of the guide rod. A first limiting rod is fixedly connected to the middle of the housing. A locking block is slidably connected to the inner cavity of the housing. The locking block is slidably connected to the first limiting rod. A first spring is provided in the inner cavity of the housing. The two sides of the first spring are fixedly connected to the side of the locking block away from the metal positioning block and the side of the inner wall of the housing away from the metal positioning block, respectively.

4. The auxiliary tool for detecting cracks in water conservancy dams according to claim 3, characterized in that: The base has symmetrically arranged second sliding grooves at its lower part, and the inner cavity of the second sliding groove is connected to the inner cavity of the first sliding groove. Each inner cavity of the second sliding groove is slidably connected to a pull rod, and the pull rod is slidably connected to the base. Each inner cavity of the second sliding groove is provided with a second spring, and the second spring is wound around the outer surface of the pull rod. Each pull rod is fixedly connected to a limit slider on the side near the metal positioning block. The two sides of the second spring are respectively fixedly connected to the side of the limit slider away from the metal positioning block and the side of the inner wall of the second sliding groove away from the metal positioning block.

5. The auxiliary tool for detecting cracks in water conservancy dams according to claim 4, characterized in that: The limiting sliders are all symmetrically fixedly connected to sliding blocks, and the sliding blocks are slidably connected to the inner cavity of the adjacent second sliding groove.

6. The auxiliary tool for detecting cracks in water conservancy dams according to claim 1, characterized in that: The adsorption assembly includes a connecting block fixedly connected to the base, a connecting cylinder fixedly connected to the middle of the connecting block, a suction cup fixedly connected to the lower end of the connecting cylinder, a piston slidably connected to the inner cavity of the connecting cylinder, a threaded bolt rotatably connected to the upper part of the piston, the threaded bolt being threadedly connected to the connecting cylinder, and two air exchange pipes fixedly connected to the side of the connecting block away from the base, with the inner cavity of the air exchange pipe communicating with the inner cavity of the connecting cylinder, and a plug inserted into the inner cavity of the air exchange pipe near the suction cup.

7. The auxiliary tool for detecting cracks in water conservancy dams according to claim 6, characterized in that: A second limiting rod is fixedly connected to one side of the upper end of the piston. The second limiting rod is slidably connected to the connecting cylinder. A handle is fixedly connected to the upper end of the threaded bolt, and several anti-slip textures are formed on the outer surface of the handle.

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