Concrete crack ultrasonic detection auxiliary tool

Abstract

The utility model discloses a kind of concrete crack ultrasonic detection auxiliary tool, belong to concrete crack detection field, including instrument box, pressing mechanism and detection mechanism;Pressing mechanism includes the connecting frame being located at the one side of instrument box, the upper portion of connecting frame is equipped with fixed seat, handle is hingedly connected on the upper end of fixed seat, handle middle part is hingedly connected with connecting rod, the lower end of connecting rod is hingedly connected with press bar, fixed seat lower part is equipped with sleeve, press bar lower end is connected with pressing plate, pressing plate side is equipped with sliding block, the lower portion of connecting frame is equipped with the guide rail of sliding connection with sliding block;Detection mechanism includes detection ruler, and one hoop is slidably connected on the two sides of detection ruler, transducer is clamped in hoop.The utility model installs transducer on the detection mechanism of the one side of instrument box, utilizes pressing mechanism to drive detection mechanism to move up and down, detects crack, and one person can complete, and transducer does not need to be held by operating personnel in detection process, avoid the accuracy of detection data due to hand shaking influence.

Description

Technical Field

[0001] This utility model belongs to the field of concrete crack detection, and specifically relates to an auxiliary tool for ultrasonic detection of concrete cracks. Background Technology

[0002] Due to the influence of various complex factors such as material properties, construction techniques, environmental factors, and load effects, cracks inevitably develop in concrete structures. If these cracks are not detected and treated in a timely manner, they may continue to expand over time, leading to a decrease in the structure's load-bearing capacity and durability, and even causing serious safety accidents such as structural collapse. Therefore, accurate and efficient detection of cracks in concrete structures is a crucial link in ensuring the safety and stability of concrete structures and has vital practical significance.

[0003] Currently, there are various methods for detecting concrete cracks, including visual inspection, rebound hammer testing, core drilling, and ultrasonic testing. Among these, ultrasonic testing, as a non-destructive testing technique, has significant advantages such as ease of operation, fast testing speed, no damage to the structure, and the ability to detect internal cracks, and has been widely used in concrete crack detection. The basic principle of ultrasonic testing is to place ultrasonic transducers on the surface of the concrete structure. Utilizing the propagation characteristics of ultrasonic waves in concrete, when ultrasonic waves encounter cracks, they undergo reflection, refraction, or attenuation. By detecting changes in parameters such as the propagation time and amplitude of the ultrasonic waves, the depth and location of the concrete cracks can be determined.

[0004] In ultrasonic testing, the positioning accuracy of the transducer directly affects the accuracy of the test results. To improve the positioning accuracy of the transducer, various transducer positioning devices have been proposed in related technical fields. For example, patent CN217303872U discloses a transducer positioning ruler for ultrasonic testing of concrete crack depth, which uses an arc-shaped groove to position the transducer. However, in actual use of this positioning ruler for testing, some obvious shortcomings exist: First, the operation requires two people to work together. One person needs to hold down the positioning ruler to prevent it from moving, and at the same time hold down the transducer to ensure that it is well coupled with the concrete surface. The other person is responsible for operating the testing instrument, which results in high labor costs.

[0005] Secondly, since the positioning ruler is pressed by hand, it is still easy for it to move slightly during the testing process, especially when the concrete surface is uneven or the operator's hand is shaking. This movement is more obvious, which leads to a decrease in the positioning accuracy of the transducer and affects the accuracy of the test data, making it difficult to meet the requirements of high-precision testing. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an auxiliary tooling for ultrasonic testing of concrete cracks, so as to solve the problems of inconvenient operation and insufficient positioning accuracy of the transducer positioning device in the existing ultrasonic testing of concrete cracks.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An auxiliary tooling for ultrasonic testing of concrete cracks, comprising: Instrument case, used to store testing instruments and transducers, including the case body and the case cover; The pressing mechanism is used to drive the transducer to press down and lift up. It includes a connecting frame located on one side of the instrument box. The upper part of the connecting frame is provided with a fixed seat. A handle is pivotally connected to the upper end of the fixed seat. A connecting rod is pivotally connected to the middle of the handle. A pressure rod is pivotally connected to the lower end of the connecting rod. A sleeve is provided at the lower part of the fixed seat. The pressure rod is slidably connected to the sleeve. A pressure plate is connected to the lower end of the pressure rod. A slider is provided on one side of the pressure plate. A guide rail is provided at the lower part of the connecting frame and is slidably connected to the slider. The testing mechanism, located under the pressure plate, includes a testing ruler. A clamp is slidably connected to each side of the testing ruler, and the transducer is clamped in the clamp.

[0008] Furthermore, the measuring ruler has scale lines on one side, and the scale lines are symmetrically arranged from the center of the measuring ruler to both sides.

[0009] Furthermore, a connecting seat is provided on one side of the measuring ruler, and the connecting seat is detachably connected to the pressure plate by bolts.

[0010] Furthermore, the instrument case is equipped with a foam liner, which has several fitting slots for placing the detector, transducer, and detection mechanism.

[0011] Furthermore, a connecting plate is provided at the lower part of the pressure rod, and guide rods are provided on both sides of the pressure plate. The guide rods are fitted with the connecting plate with a clearance. A nut is threaded to the upper end of the guide rod. A spring is sleeved on the outside of the guide rod. One end of the spring abuts against the connecting plate, and the other end of the spring abuts against the pressure plate.

[0012] Furthermore, an adjusting rod is rotatably connected to the upper part of the connecting plate. The adjusting rod is threadedly connected to the pressure rod and is used to adjust the initial height of the pressure plate and the force with which the transducer adheres to the concrete surface.

[0013] Furthermore, a double-ended stud is rotatably connected to the connecting seat, with the threads on both sides of the double-ended stud rotating in opposite directions. An adjustment knob is fixedly connected to one end of the double-ended stud, and one side of the clamp is threadedly connected to the double-ended stud.

[0014] Furthermore, the instrument box is fixedly connected to both sides with fixed tubes, and a number of telescopic legs are provided on one side of the fixed tubes. The fixed tubes are connected to the telescopic legs and adjacent telescopic legs by locking components.

[0015] Furthermore, the locking component adopts a snap-on locking structure or a knob-type locking structure. When the locking component adopts a snap-on locking structure, both the fixed tube and the telescopic leg are provided with several adjustment holes, and the telescopic tube is also provided with an elastic buckle that engages with the adjustment holes. When the locking component adopts a knob-type locking structure, both the fixed tube and the telescopic leg are fixedly connected with a compression sleeve. The upper end of the compression sleeve extends out of the fixed tube or the telescopic leg. The compression sleeve is provided with several contraction grooves, and the upper end of the compression sleeve is a tapered structure that contracts inward. The telescopic leg is also provided with a locking knob. The locking knob is clearance-fitted with the telescopic leg. The locking knob is threadedly connected to the compression sleeve, and the locking knob is provided with a compression surface inside. The compression surface matches the tapered surface at the upper end of the compression sleeve.

[0016] The beneficial effects of this utility model are: (1) The present invention installs the transducer on the detection mechanism on one side of the instrument box and uses the pressing mechanism to drive the detection mechanism to move up and down to detect cracks. This can be completed by a single person. Moreover, the operator does not need to hold the transducer during the detection process, thus avoiding the impact of hand tremors on the accuracy of the detection data.

[0017] (2) The measuring ruler is equipped with scale lines, which makes it easy for operators to quickly identify the distance between the two transducers. The measuring ruler is detachably connected to the pressure plate through the connecting seat, which makes it easy for the measuring mechanism to be stored in the instrument box after use.

[0018] (3) A foam liner with fitting grooves is installed inside the instrument case to store the detector, transducer and testing mechanism, thus avoiding collisions during tooling transportation.

[0019] (4) A connecting plate is provided at the bottom of the pressure rod. The two sides of the pressure plate are connected to the connecting plate through guide rods, and springs are sleeved on the outside of the guide rods to avoid damage to the transducer and measuring scale due to excessive pressure plate stroke.

[0020] (5) An adjusting rod that is threadedly connected to the pressure rod is provided on the upper part of the connecting plate, which facilitates the adjustment of the initial height of the pressure plate and the force of the transducer to adhere to the concrete surface, thus ensuring the accuracy of the monitoring data.

[0021] (6) The clamps on both sides are connected by double-headed studs with opposite directions at both ends. Rotating the knob drives the double-headed studs to rotate, thereby driving the clamps on both sides to move closer or further away from each other synchronously. This not only improves the efficiency of transducer spacing adjustment, but also prevents the transducers from sliding on the measuring ruler due to external force after adjustment.

[0022] (7) By setting fixed tubes and telescopic legs on both sides of the instrument box, and using locking parts to lock the fixed tubes, telescopic legs and adjacent telescopic legs, the locking parts adopt a knob-type locking mechanism with stepless adjustment function, the detection of concrete cracks on the facade, such as wall cracks, is realized. Attached Figure Description

[0023] Figure 1 This utility model relates to a horizontal detection state diagram of an auxiliary tool for ultrasonic detection of concrete cracks.

[0024] Figure 2 This is a schematic diagram of the instrument case structure.

[0025] Figure 3 This is a schematic diagram of the pressing mechanism.

[0026] Figure 4 This is a schematic diagram of the testing agency's side.

[0027] Figure 5 This is a schematic diagram of the other side of the testing facility.

[0028] Figure 6 This is a cross-sectional view of the locking component.

[0029] In the diagram, 1. Instrument case; 11. Foam liner; 12. Fitting groove; 13. Fixing tube; 14. Telescopic leg; 15. Locking component; 151. Extrusion sleeve; 152. Shrinkage groove; 153. Locking knob; 154. Extrusion surface; 2. Pressing mechanism; 21. Connecting frame; 22. Guide rail; 23. Fixing seat; 24. Handle; 25. Sleeve; 26. Connecting rod; 27. Pressure rod; 28. Adjusting rod; 29. ​​Connecting plate; 210. Pressure plate; 211. Guide rod; 212. Spring; 213. Sliding block; 3. Detection mechanism; 31. Detection ruler; 32. Connecting seat; 33. Clamp; 34. Double-ended stud; 35. Adjusting knob; 4. Detector; 5. Transducer. Detailed Implementation

[0030] The following will be combined with the appendix Figures 1-6 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0031] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "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 utility model 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 utility model.

[0032] like Figure 1As shown, an auxiliary tooling for ultrasonic testing of concrete cracks includes an instrument case 1, a pressing mechanism 2, and a testing mechanism 3. The instrument case 1 is used to house the testing instrument 4 and the transducer 5, and includes a case body and a cover (not shown in the figure); Figure 3 As shown, the pressing mechanism 2 is used to drive the transducer to press down and lift up. It includes a connecting frame 21 located on one side of the instrument box 1. The upper part of the connecting frame 21 is provided with a fixed seat 23. The upper end of the fixed seat 23 is pivotally connected to a handle 24. The middle part of the handle 24 is pivotally connected to a connecting rod 26. The lower end of the connecting rod 26 is pivotally connected to a pressure rod 27. The lower part of the fixed seat 23 is provided with a sleeve 25. The pressure rod 27 is slidably connected to the sleeve 25. The lower end of the pressure rod 27 is connected to a pressure plate 210. The side of the pressure plate 210 is provided with a slider 213. The lower part of the connecting frame 21 is provided with a guide rail 22 that is slidably connected to the slider 213. like Figure 4 , Figure 5 As shown, the detection mechanism 3 is located at the lower part of the pressure plate 210 and includes a detection ruler 31. A clamp 33 is slidably connected to each side of the detection ruler 31, and the transducer 5 is clamped in the clamp 33.

[0033] When inspecting cracks in planar concrete, place instrument box 1 on one side of the crack, install the transducer inside clamp 33, apply coupling agent to the bottom of the transducer, adjust the distance between the two transducers, and then press handle 24. Handle 24 drives pressure rod 27 to move downward along sleeve 25 via connecting rod 26, thereby using pressure plate 210 to drive the measuring ruler 31 downward, so that the transducer fits against the concrete surface. Then operate the detector 4 to inspect the crack. The above inspection can be completed by a single person, and the operator does not need to hold the transducer during the inspection process, avoiding the impact of hand tremors on the accuracy of the inspection data.

[0034] like Figure 4 As shown, the detection ruler 31 has scale lines on one side, and the scale lines are symmetrically arranged from the center of the detection ruler 31 to both sides, which facilitates quick identification of the detection distance of the transducer.

[0035] like Figure 4 , Figure 5 As shown, a connecting seat 32 is provided on one side of the measuring ruler 31. The connecting seat 32 is detachably connected to the pressure plate 210 by bolts, so that the measuring mechanism 3 can be stored in the instrument case 1 after use.

[0036] like Figure 1 , Figure 2 As shown, the instrument box 1 has a foam liner 11 inside, and the foam liner 11 has several fitting grooves 12 for placing the detector 4, transducer and detection mechanism 3.

[0037] like Figure 3As shown, the lower part of the pressure rod 27 is provided with a connecting plate 29, and the pressure plate 210 is provided with guide rods 211 on both sides. The guide rods 211 are clearance-fitted with the connecting plate 29, and the upper end of the guide rods 211 is threaded with a nut. A spring 212 is sleeved on the outside of the guide rods 211. One end of the spring 212 abuts against the connecting plate 29, and the other end of the spring 212 abuts against the pressure plate 210. The spring 212 prevents damage to the transducer and the measuring ruler 31 caused by excessive stroke of the pressure plate 210.

[0038] like Figure 3 As shown, an adjusting rod 28 is rotatably connected to the upper part of the connecting plate 29. The adjusting rod 28 is threadedly connected to the pressure rod 27 and is used to adjust the initial height of the pressure plate 210 and the force of the transducer adhering to the concrete surface.

[0039] like Figure 5 As shown, a double-ended stud 34 is rotatably connected to the connecting seat 32. The threads on both sides of the double-ended stud 34 turn in opposite directions. An adjustment knob 35 is fixedly connected to one end of the double-ended stud 34. One side of the clamp 33 is threadedly connected to the double-ended stud 34. Rotating the knob drives the double-ended stud 34 to rotate, thereby causing the clamps 33 on both sides to move closer or further away from each other synchronously. This not only improves the efficiency of transducer spacing adjustment, but also prevents the transducer from sliding on the detection ruler 31 due to external force after adjustment.

[0040] Furthermore, fixed tubes 13 are fixedly connected to both sides of the instrument case 1, and several telescopic legs 14 are provided on one side of the fixed tubes 13. The fixed tubes 13, telescopic legs 14, and adjacent telescopic legs 14 are connected by locking members 15. When detecting cracks in the wall, the detector 4 is taken out of the instrument case 1, the fixture is placed vertically, and the height of the telescopic legs 14 is adjusted according to the height of the detection position. During the detection process, in order to ensure the stability of the fixture, the instrument case 1 can be made to fit against the wall by using a top rod or by holding the instrument case 1 by hand.

[0041] like Figure 1 , Figure 2 As shown, the locking component 15 adopts a snap-on locking structure or a knob locking structure. When the locking component 15 adopts a snap-on locking structure, both the fixed tube 13 and the telescopic leg 14 are provided with several adjustment holes, and the telescopic tube is also provided with an elastic buckle that engages with the adjustment holes; for example Figure 6As shown, when the locking component 15 adopts a knob-type locking structure, a compression sleeve 151 is fixedly connected to both the fixed tube 13 and the telescopic leg 14. The upper end of the compression sleeve 151 extends out of the fixed tube 13 or the telescopic leg 14. The compression sleeve 151 is provided with several shrinkage grooves 152 and the upper end of the compression sleeve 151 is a tapered structure that shrinks inward. The telescopic leg 14 is also provided with a locking knob 153. The locking knob 153 is clearance-fitted with the telescopic leg 14. The locking knob 153 is threadedly connected to the compression sleeve 151, and the inside of the locking knob 153 is provided with a compression surface 154. The compression surface 154 matches the tapered surface at the upper end of the compression sleeve 151.

[0042] When adjusting the support height, first loosen the locking knob 153. The pressing surface 154 of the locking knob 153 separates from the conical surface of the pressing sleeve 151, releasing the clamping effect of the pressing sleeve 151 on the fixed tube 13 or the telescopic leg 14. Then, adjust the extension length of each telescopic leg 14 according to the detected height. Then, tighten the locking knob 153 and the pressing sleeve 151, so that the pressing surface 154 presses against the conical surface, thereby making the pressing sleeve 151 clamp the telescopic leg 14. Compared with the snap-on locking structure, the knob-type locking structure can realize stepless adjustment of the telescopic leg 14.

[0043] The above content is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the scope defined by the structure of the utility model, they should all fall within the protection scope of this utility model.

Claims

1. An auxiliary tooling for ultrasonic testing of concrete cracks, comprising: Instrument case, used to store testing instruments and transducers, including the case body and the case cover; The feature is that it also includes a pressing mechanism for driving the transducer to press down and lift up, including a connecting frame provided on one side of the instrument box, a fixed seat provided on the upper part of the connecting frame, a handle pivotally connected to the upper end of the fixed seat, a connecting rod pivotally connected to the middle of the handle, a pressure rod pivotally connected to the lower end of the connecting rod, a sleeve provided on the lower part of the fixed seat, the pressure rod slidably connected to the sleeve, a pressure plate connected to the lower end of the pressure rod, a slider provided on one side of the pressure plate, and a guide rail slidably connected to the slider on the lower part of the connecting frame; The testing mechanism, located under the pressure plate, includes a testing ruler. A clamp is slidably connected to each side of the testing ruler, and the transducer is clamped in the clamp.

2. The auxiliary tooling for ultrasonic detection of concrete cracks according to claim 1, characterized in that, The measuring ruler has scale lines on one side, and the scale lines are symmetrically arranged from the center of the measuring ruler to both sides.

3. The auxiliary tooling for ultrasonic detection of concrete cracks according to claim 1, characterized in that, The measuring ruler has a connecting seat on one side, and the connecting seat is detachably connected to the pressure plate by bolts.

4. The auxiliary tooling for ultrasonic detection of concrete cracks according to claim 1, characterized in that, The instrument case is lined with a foam liner, which has several fitting slots for placing the detector, transducer and detection mechanism.

5. The auxiliary tooling for ultrasonic detection of concrete cracks according to claim 1, characterized in that, The lower part of the pressure rod is provided with a connecting plate, and guide rods are provided on both sides of the pressure plate. The guide rods are fitted with the connecting plate with a clearance. Nuts are threaded to the upper end of the guide rods. A spring is sleeved on the outside of the guide rods. One end of the spring abuts against the connecting plate, and the other end of the spring abuts against the pressure plate.

6. The auxiliary tooling for ultrasonic detection of concrete cracks according to claim 5, characterized in that, An adjusting rod is rotatably connected to the upper part of the connecting plate. The adjusting rod is threadedly connected to the pressure rod and is used to adjust the initial height of the pressure plate and the force with which the transducer adheres to the concrete surface.

7. The auxiliary tooling for ultrasonic detection of concrete cracks according to claim 3, characterized in that, A double-ended stud is rotatably connected to the connecting seat. The threads on both sides of the double-ended stud turn in opposite directions. An adjustment knob is fixedly connected to one end of the double-ended stud. One side of the clamp is threadedly connected to the double-ended stud.

8. An auxiliary tooling for ultrasonic testing of concrete cracks according to any one of claims 1-7, characterized in that, The instrument box is fixedly connected to two sides by fixed tubes, and several telescopic legs are provided on one side of the fixed tubes. The fixed tubes are connected to the telescopic legs and adjacent telescopic legs by locking devices.

9. The auxiliary tooling for ultrasonic detection of concrete cracks according to claim 8, characterized in that, The locking component adopts a snap-on locking structure or a knob locking structure. When the locking component adopts a snap-on locking structure, both the fixed tube and the telescopic leg are provided with several adjustment holes, and the telescopic tube is also provided with an elastic buckle that engages with the adjustment holes. When the locking component adopts a knob locking structure, both the fixed tube and the telescopic leg are fixedly connected with a compression sleeve. The upper end of the compression sleeve extends out of the fixed tube or the telescopic leg. The compression sleeve is provided with several contraction grooves, and the upper end of the compression sleeve is a tapered structure that contracts inward. The telescopic leg is also provided with a locking knob. The locking knob is clearance-fitted with the telescopic leg. The locking knob is threadedly connected to the compression sleeve, and the locking knob is provided with a compression surface inside. The compression surface matches the tapered surface at the upper end of the compression sleeve.

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