Construction engineering crack detection device and method

Abstract

The invention relates to the technical field of constructional engineering, and discloses a construction engineering crack detection device and method.The construction engineering crack detection device comprises a detection device body, the detection device body comprises an ultrasonic instrument, an ultrasonic connector is installed on one side of the ultrasonic instrument, and the ultrasonic connector is connected with a detection probe through a cable; the detection probe is installed on the wall surface through the installation device, the installation device comprises a positioning support and an installation support, the positioning support is installed on the wall surface through an adsorption assembly, the installation support is used for installing the detection probe, and the detection probe is fixed through insertion connection of the positioning support and the installation support. According to the scheme, the support is installed on the wall surface, after the stability of the probe is guaranteed, the instrument body is operated, one worker is liberated, and the problem that the efficiency is low due to the fact that two workers need to be consumed in an existing detection mode is solved.

Description

Technical Field

[0001] The invention relates to the technical field of construction engineering, and in particular to a construction engineering crack detection device and method. Background Art

[0002] Concrete is generally formed by the solidification and hardening of cement, coarse aggregate, fine aggregate and water, and sometimes also contains active admixtures, inert admixtures, admixtures and other components. Hardened concrete is a multi-component, non-homogeneous cement-based composite material containing solid phase, liquid phase and gas phase. When concrete shrinks under restrained conditions and the tensile stress generated is greater than its tensile strength, cracks will occur.

[0003] Cracks may reduce the bearing capacity and durability of the structure. By detecting the width, length, depth and other information of cracks, its impact on the safety of the structure can be evaluated. The causes of cracks vary, including material problems, improper construction, design defects, etc. Detecting the crack gap helps to diagnose the cause of the cracks and provide a basis for subsequent repair and reinforcement. By regularly detecting concrete cracks, potential safety hazards can be discovered in time to avoid further expansion of cracks leading to more serious structural problems and achieve preventive maintenance.

[0004] A common measurement method is to manually mark lines near the cracks, manually apply coupling agent to two probes, and place them on the marked lines, and finally use an ultrasonic instrument to detect the cracks. However, this method requires at least two people to operate the instrument to obtain crack parameters, and its detection efficiency is low. Therefore, it does not meet existing needs. In this regard, we propose a construction engineering crack detection device and method. Summary of the invention

[0005] The present invention provides a construction engineering crack detection device and method, which has the beneficial effect of freeing one of the workers by installing a bracket on the wall to ensure the stability of the probe and then operating the instrument body, thereby solving the problem of low efficiency caused by the existing detection method mentioned in the above background technology that requires two workers.

[0006] The present invention provides the following technical solution: a construction engineering crack detection device, comprising a detection device, the detection device comprising an ultrasonic instrument, an ultrasonic connection joint is installed on one side of the ultrasonic instrument, the ultrasonic connection joint is connected to a detection probe through a cable, the detection probe is installed on a wall through a mounting device, and the ultrasonic instrument model is a crack width observation instrument HC-CK101.

[0007] The mounting device is arranged on the outside of the detection probe, and the mounting device includes a positioning bracket and a mounting bracket. The positioning bracket is used to be connected to the wall, and the mounting bracket is installed above the positioning bracket. The positioning bracket is installed on the wall through an adsorption component, and the mounting bracket is used to install the detection probe. A plug-in slot is opened in the positioning bracket, and a plug-in block is plugged into the plug-in slot. The plug-in block is fixedly connected to the bottom of the positioning bracket. The detection probe is fixed by plugging the positioning bracket and the mounting bracket. An adsorption suction cup for preliminary fixation is installed at the bottom of the positioning bracket.

[0008] As an optional scheme of a construction project crack detection device described in the present invention, wherein: a working slide groove is opened in the mounting bracket, a working slider is slidably connected in the working slide groove, a rotating groove is opened in the working slider, a rotating rod is rotatably connected in the rotating groove, a spiral groove is opened at the bottom of the rotating rod, a spiral rod is arranged in the spiral groove, the detection probe is installed at the bottom of the spiral rod, a cable is installed on the top of the spiral rod, and the working slider is a rectangular block.

[0009] As an optional scheme of a construction project crack detection device described in the present invention, wherein: a positioning component for adjusting the position of the detection probe is arranged in the working slider, the positioning component includes a limiting slide groove and a positioning triangular groove provided in the mounting bracket, the limiting slide groove is slidably connected to the limiting slide groove, the limiting slide groove is fixedly connected to the outer wall of the working slider, the side wall of the working slider is provided with a positioning slide groove, the positioning slide groove is slidably connected to a positioning plug-in block, one side of the positioning plug-in block is fixedly connected to a positioning spring, the other end of the positioning spring is fixedly connected to the positioning slide groove, the bottom of the positioning plug-in block is plugged into the positioning triangular groove, the positioning plug-in block is C-shaped, and the lower end of the positioning plug-in block is triangular with the positioning triangular groove.

[0010] As an optional solution of a construction engineering crack detection device described in the present invention, wherein: a cross bar is fixedly connected to the inner side of the positioning bracket, and a central positioning rod is fixedly connected to the center of the lower surface of the cross bar.

[0011] As an optional scheme of a construction project crack detection device described in the present invention, the adsorption component comprises an extrusion plate slidably connected to the plug-in slot, the lower surface of the extrusion plate is fixedly connected to an extrusion spring, the other end of the extrusion spring is fixedly connected to the plug-in slot, the positioning bracket is provided with two lower pressure grooves, a No. 1 lower pressure rod and a No. 2 lower pressure rod are respectively slidably connected in the lower pressure grooves, the No. 1 lower pressure rod and the No. 2 lower pressure rod are abutted against the bottom of the No. 1 lower pressure rod and the No. 2 lower pressure rod for sliding, an adsorption driving plate is arranged above the other inclined surface of the wedge block, the adsorption driving plate is slidably connected in the adsorption channel, the adsorption channel is provided in the positioning bracket, the adsorption channel is connected to the adsorption suction cup, a No. 1 return spring is fixedly connected to the upper surface of the adsorption driving plate, the other end of the No. 1 return spring is fixedly connected to the top of the adsorption channel, the No. 1 lower pressure rod and the No. 2 lower pressure rod are L-shaped, and the wedge block is an isosceles trapezoid.

[0012] As an optional scheme of the construction project crack detection device described in the present invention, the bottom of the No. 1 downward pressure rod is provided with a filling assembly, and the filling assembly includes a water storage folded line groove opened in the mounting bracket, the water storage folded line groove is connected with the one-way water seepage ring groove, the one-way water seepage ring groove is opened in the adsorption suction cup, and the bottom of the adsorption suction cup is provided with a seepage hole, and the seepage hole is connected with the one-way water seepage ring groove, a water squeezing plate is slidably connected in the water storage folded line groove, and a filling driving rod is fixedly connected to the upper surface of the water squeezing plate, and the other end of the filling driving rod abuts against the No. 1 downward pressure rod, and a No. 2 return spring is fixedly connected to the upper surface of the water squeezing plate, and the other end of the No. 2 return spring is fixedly connected to the upper surface of the water storage folded line groove, and a sponge is arranged in the middle of the seepage hole.

[0013] As an optional solution of a construction engineering crack detection device described in the present invention, a water replenishment port is opened in the positioning bracket, a water inlet check valve is installed in the water replenishment port, and a water outlet check valve is installed in the water storage folding groove.

[0014] As an optional scheme of the construction project crack detection device described in the present invention, wherein: a cleaning assembly is arranged at the bottom of the No. 2 down-pressure rod, and the cleaning assembly includes a rotating groove and a cleaning movable groove opened in the positioning bracket, a rotating cleaning block is rotatably connected in the rotating groove, a limiting ring is fixedly connected to the side wall of the rotating cleaning block, the limiting ring is rotatably connected in the limiting groove, the limiting groove is opened in the positioning bracket, and an air outlet folding rod is fixedly connected to the outer side of the rotating cleaning block.

[0015] As an optional scheme of the construction project crack detection device described in the present invention, the outer wall of the rotating cleaning block is provided with an installation groove, a torsion spring is installed in the installation groove, the other end of the torsion spring is installed in the rotating groove, the end of the rotating cleaning block away from the air outlet folding rod is fixedly connected to a driving block, a rack is provided on the outside of the driving block, the rack is installed at the bottom of the slide plate, the slide plate is slidably connected in the cleaning movable groove, a cleaning driving rod is fixedly connected to the upper surface of the slide plate, the other end of the cleaning driving rod abuts against the lower surface of the No. 2 downward pressure rod, and a No. 3 return spring is fixedly connected to the upper surface of the slide plate, and the other end of the No. 3 return spring is installed on the top of the cleaning movable groove.

[0016] The present invention also discloses a method for using a construction engineering crack detection device, which further includes the following steps, wherein: S1. Ensure that the concrete surface of the test site is clean and flat, and polish or smooth it if necessary. Prepare the crack detector, including the transmitting transducer and the receiving transducer, as well as the necessary measuring tools; S2. Place the transmitting transducer and the receiving transducer on the same side near the crack, keep a certain distance between them, and read and record the propagation time of the ultrasonic wave when it does not cross the crack; S3, placing the transmitting transducer and the receiving transducer on the symmetrical sides of the crack axis, with the central axis perpendicular to the crack direction, and also maintaining a certain distance, reading and recording the time of ultrasonic wave propagation across the crack; S4. According to the acoustic time values ​​measured without crossing the crack and across the crack, combined with the propagation speed of ultrasonic waves in concrete, the depth of the crack is calculated using the relevant formula. Multiple measurements can be made and the average value can be taken to improve accuracy; S5. Analyze the crack depth data, combine the location, direction and shape of the cracks in the structure, evaluate the impact of the cracks on the structural safety, and formulate corresponding treatment measures.

[0017] The present invention has the following beneficial effects: 1. The construction engineering crack detection device and method, through the design of the positioning bracket and the adsorption component, the positioning bracket can be installed and fixed on the wall, and then by installing the detection probe on the mounting bracket, and then installing the positioning bracket and the mounting bracket as a whole, it can be avoided that when operating the ultrasonic instrument, the relative position of the detection probe needs to be manually maintained. This design effectively changes the positioning of the detection probe, which requires manual control at all times. Through the design of the installation device, the positioning component and the adsorption component, the detection probe can ensure the stability of its relative position without manual control, thereby realizing that the parameters of the crack can be detected by only one person, which greatly improves the work efficiency. The positioning component is used to adjust The position of the working slider relative to the working slide slot can be effectively controlled by opening a positioning triangular groove at a special position of the mounting bracket, so that the relative position of the two detection probes can be controlled so that the spacing between them meets the spacing required for the detection work. Through this design, the relative position of the detection probe can be released after the adjustment is completed, so as to facilitate the operation of the ultrasonic instrument. This design ensures the stability of the relative position of the detection probe, and further ensures that the detection probe can still maintain its position stability after the position is adjusted, so as to facilitate the normal crack detection of the ultrasonic instrument. Through this design, one person can complete the detection of crack parameters. Compared with the existing technology, this design greatly improves the work efficiency.

[0018] 2. The device and method for detecting cracks in construction projects can further improve the connection between the adsorption suction cup and the wall through the design of the adsorption component. When the plug-in block is inserted into the plug-in slot, the plug-in block squeezes the extrusion plate in the plug-in slot and compresses the extrusion spring, thereby driving the No. 1 and No. 2 down-pressure rods at the bottom of the extrusion plate to move downward synchronously, thereby driving the No. 1 and No. 2 down-pressure rods to resist the wedge block, and driving the wedge block to slide toward the middle, thereby lifting the adsorption drive plate in the middle of the wedge block and sliding it upward. Since the adsorption channel has only one channel connected to the adsorption suction cup at the bottom, and the adsorption suction cup is in contact with the wall, negative pressure is generated in the adsorption channel through the upward sliding of the adsorption channel. By utilizing this negative pressure, the connection between the positioning bracket and the wall can be further guaranteed, the stable installation of the installation device can be guaranteed, and the stability of the detection probe can be guaranteed, thereby ensuring the stability of the detection result.

[0019] 3. The construction engineering crack detection device and method, the cleaning component is used to clean the dust at the detection position of the detection probe. When the No. 2 down-pressure rod descends, the No. 2 down-pressure rod drives the cleaning drive rod to slide downward synchronously, and then drives the slide plate and the rack fixedly connected thereto to slide downward in the cleaning movable groove. During the downward sliding process of the slide plate, the gas in the cleaning movable groove will be continuously pressurized, and discharged through the channel between the rotating cleaning block and the air outlet folding rod. Through this design, the dust at the position where the detection probe is placed can be effectively cleaned, thereby ensuring the detection result. At the same time, during the downward sliding process of the rack, it will continuously conflict with the drive block and drive the rotating cleaning block fixedly connected to the drive block to rotate. Due to the design of the mounting groove and the torsion spring, when the tooth block of the rack does not conflict with the drive block, the rotating cleaning block quickly resets and rotates. Through this continuous rotation and reset, the rotating cleaning block can be effectively driven to swing. Through this swing, the cleaning range of the air outlet folding rod can be further improved, and the cleanliness of the detection area can be further guaranteed to reduce the error of the detection result. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the structure of the present invention viewed from above.

[0022] Figure 3 For the present invention Figure 2 Schematic diagram of the cross-section structure of section 1-1.

[0023] Figure 4 For the present invention Figure 2 Schematic diagram of the structure in Figure 2-2.

[0024] Figure 5 For the present invention Figure 3 Enlarged structural diagram at A in the middle.

[0025] Figure 6 For the present invention Figure 4 Schematic diagram of the local structure.

[0026] Figure 7 For the present invention Figure 6 Enlarged structural diagram at B in the middle.

[0027] Figure 8 For the present invention Figure 6 Enlarged structural diagram at point C in the middle.

[0028] Fig. 9 It is a schematic diagram of the cross-sectional structure of the adsorption suction cup of the present invention.

[0029] Fig.10 For the present invention Figure 6Enlarged structural diagram at D in the middle.

[0030] In the figure: 1. detection device; 11. ultrasonic instrument; 12. ultrasonic connection joint; 13. cable; 14. detection probe; 2. installation device; 21. positioning bracket; 22. installation bracket; 23. plug-in slot; 24. plug-in block; 25. working slide; 26. working slider; 27. rotating slot; 28. rotating rod; 29. ​​spiral slot; 210. spiral rod; 211. adsorption suction cup; 3. positioning component; 31. limit slide; 32. limit slider; 33. positioning triangular slot; 34. positioning slide; 35. positioning plug-in block; 36. positioning spring; 37. cross bar; 38. center positioning rod; 4. adsorption component; 41. extrusion plate; 42. extrusion spring; 43. lower pressure slot; 44. one 4. Pressure rod No. 1; 45. Pressure rod No. 2; 46. Wedge block; 47. Adsorption channel; 48. Adsorption drive plate; 49. Return spring No. 1; 5. Filling assembly; 51. Water storage folding groove; 52. One-way water seepage ring groove; 53. Water seepage hole; 54. Water squeezing plate; 55. Filling drive rod; 56. Return spring No. 2; 57. Water replenishment port; 58. Water outlet one-way valve; 59. Water inlet one-way valve; 6. Cleaning assembly; 61. Rotating groove; 62. Cleaning movable groove; 63. Rotating cleaning block; 64. Mounting groove; 65. Torsion spring; 66. Limiting groove; 67. Limiting ring; 68. Drive block; 69. Rack; 610. Air outlet folding rod; 611. Slide plate; 612. Cleaning drive rod; 613. Return spring No. 3. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example 1: This example aims to solve the problem that the existing detection method requires two manual labors and leads to low efficiency. Figures 1 to 10 A construction engineering crack detection device includes a detection device 1, the detection device 1 includes an ultrasonic instrument 11, an ultrasonic connection joint 12 is installed on one side of the ultrasonic instrument 11, the ultrasonic connection joint 12 is connected to a detection probe 14 through a cable 13, and the detection probe 14 is installed on the wall through an installation device 2.

[0033] The mounting device 2 is arranged on the outside of the detection probe 14, and the mounting device 2 includes a positioning bracket 21 and a mounting bracket 22. The positioning bracket 21 is used to connect to the wall, and the mounting bracket 22 is installed above the positioning bracket 21. The positioning bracket 21 is installed on the wall through the adsorption component 4. The mounting bracket 22 is used to install the detection probe 14. A plug-in slot 23 is opened in the positioning bracket 21, and a plug-in block 24 is plugged into the plug-in slot 23. The plug-in block 24 is fixedly connected to the bottom of the positioning bracket 21. The detection probe 14 is fixed by plugging the positioning bracket 21 and the mounting bracket 22. An adsorption suction cup 211 for preliminary fixation is installed at the bottom of the positioning bracket 21.

[0034] The detection device 1 is a prior art and is used to detect the width and depth of cracks on a concrete wall (its working principle and internal specific structure are prior art and are not described in detail in this solution).

[0035] Through the design of the positioning bracket 21 and the adsorption component 4, the positioning bracket 21 can be installed and fixed on the wall, and then by installing the detection probe 14 on the mounting bracket 22, and then installing the positioning bracket 21 and the mounting bracket 22 as a whole, it can be avoided that when operating the ultrasonic instrument 11, there is a need to manually maintain the relative position of the detection probe 14. This design effectively changes the need for manual control of the positioning of the detection probe 14. Through the design of the mounting device 2, the positioning component 3 and the adsorption component 4, the detection probe 14 does not need manual control while its relative position can be guaranteed to be stable, thereby realizing that only one person can detect the parameters of the crack, greatly improving work efficiency.

[0036] The design of the plug-in slot 23 and the plug-in block 24 can facilitate the connection between the positioning bracket 21 and the mounting bracket 22 (the mounting bracket 22 and the positioning bracket 21 can be plugged in a variety of ways, and this scheme only describes the basic structure and function required to complete the plug-in work. The specific plug-in structure can be improved according to actual conditions without affecting this scheme). The design of the adsorption suction cup 211 is used to preliminarily fix the positioning bracket 21.

[0037] A working slide groove 25 is provided in the mounting bracket 22, a working slider 26 is slidably connected in the working slide groove 25, a rotating groove 27 is provided in the working slider 26, a rotating rod 28 is rotatably connected in the rotating groove 27, a spiral groove 29 is provided at the bottom of the rotating rod 28, a spiral rod 210 is arranged in the spiral groove 29, a detection probe 14 is installed at the bottom of the spiral rod 210, and a cable 13 is installed at the top of the spiral rod 210.

[0038] The working slide groove 25 provided in the mounting bracket 22 allows the working slider 26 equipped with the detection probe 14 to slide left and right in the direction of the working slide groove 25. The detection probe 14 is installed on the working slider 26 through the design of the rotating groove 27, the rotating rod 28, the spiral groove 29 and the spiral rod 210. First, the cable 13 is passed through the gap in the middle of the rotating rod 28, and then the spiral rod 210 on the top of the detection probe 14 is inserted into the spiral groove 29 in the rotating rod 28. Then, the rotating rod 28 is rotated and the bottom of the detection probe 14 is manually fixed so that the detection probe 14 can be installed in the working slider 26. At the same time, this spiral design method can change the distance of the detection probe 14 relative to the wall by rotating the rotating rod 28 after the positioning bracket 21 and the mounting bracket 22 are installed, so as to facilitate the detection of the crack gap parameters.

[0039] A positioning component 3 for adjusting the position of the detection probe 14 is provided in the working slider 26, and the positioning component 3 includes a limiting slide groove 31 and a positioning triangular groove 33 which are provided in the mounting bracket 22, and a limiting slider 32 is slidably connected in the limiting slide groove 31, and the limiting slider 32 is fixedly connected to the outer wall of the working slider 26, and a positioning slide groove 34 is provided on the side wall of the working slider 26, and a positioning plug-in block 35 is slidably connected in the positioning slide groove 34, and a positioning spring 36 is fixedly connected to one side of the positioning plug-in block 35, and the other end of the positioning spring 36 is fixedly connected in the positioning slide groove 34, and the bottom of the positioning plug-in block 35 is plugged into the positioning triangular groove 33.

[0040] A cross bar 37 is fixedly connected to the inner side of the positioning bracket 21 , and a center positioning rod 38 is fixedly connected to the center of the lower surface of the cross bar 37 .

[0041] The positioning assembly 3 is used to adjust the position of the working slide 26 relative to the working slide groove 25. The design of the limiting slide groove 31 and the limiting slide block 32 ensures that the working slide 26 will not slide in the vertical direction in the working slide groove 25. The design of the positioning triangular groove 33 and the positioning plug-in block 35 can fix the working slide 26 in the position of the positioning triangular groove 33. When in use, the positioning plug-in block 35 is manually pressed so that the bottom of the positioning plug-in block 35 is disengaged from the positioning triangular groove 33. At this time, the working slide 26 can slide freely in the working slide groove 25. When the working slide 26 slides to the fixed position, the positioning plug-in block 35 is released so that the positioning plug-in block 35 is reinserted into the positioning triangular groove 33 under the action of the positioning spring 36. By opening a positioning triangular groove 33 at a special position of the mounting bracket 22, the relative positions of the two detection probes 14 can be effectively controlled so that the spacing therebetween meets the spacing required for the detection work. Through this design, the relative position of the detection probe 14 can be released after the adjustment is completed, so as to operate the ultrasonic instrument 11. This design ensures the stability of the relative position of the detection probe 14, and further ensures that the detection probe 14 can still maintain its position stability after the position is adjusted, so as to facilitate the normal crack detection of the ultrasonic instrument 11. Through this design, one person can complete the detection of crack parameters. Compared with the existing technology, this design greatly improves the work efficiency.

[0042] The design of the cross bar 37 and the center positioning rod 38 ensures the installation position of the positioning bracket 21, provides a positioning function for cross-crack detection during the detection process, and makes the midpoint of the positioning bracket 21 and the installation bracket 22 correspond to the position of the crack.

[0043] Embodiment 2: This embodiment is intended to promote the solution of the problem that the positioning bracket 21 cannot be fixed on the wall by only relying on the suction cup 211. This embodiment is an explanation based on the embodiment 1. For details, please refer to Figures 1 to 10 The adsorption component 4 includes an extrusion plate 41 slidably connected in the plug-in slot 23, a squeezing spring 42 is fixedly connected to the lower surface of the squeezing plate 41, and the other end of the squeezing spring 42 is fixedly connected to the plug-in slot 23. Two downward pressing grooves 43 are provided in the positioning bracket 21, and a No. 1 downward pressing rod 44 and a No. 2 downward pressing rod 45 are respectively slidably connected in the downward pressing grooves 43. The bottom of the No. 1 downward pressing rod 44 and the No. 2 downward pressing rod 45 are in contact with a wedge block 46 for sliding. An adsorption driving plate 48 is arranged above the other inclined surface of the wedge block 46, and the adsorption driving plate 48 is slidably connected in the adsorption channel 47. The adsorption channel 47 is provided in the positioning bracket 21. The adsorption channel 47 is connected to the adsorption suction cup 211, and a No. 1 return spring 49 is fixedly connected to the upper surface of the adsorption driving plate 48, and the other end of the No. 1 return spring 49 is fixedly connected to the top of the adsorption channel 47.

[0044] The design of the adsorption component 4 can further improve the connection between the adsorption suction cup 211 and the wall. When the plug-in block 24 is inserted into the plug-in slot 23, the plug-in block 24 squeezes the extrusion plate 41 in the plug-in slot 23 and compresses the extrusion spring 42, thereby driving the No. 1 downward pressure rod 44 and the No. 2 downward pressure rod 45 at the bottom of the extrusion plate 41 to move downward synchronously, thereby driving the No. 1 downward pressure rod 44 and the No. 2 downward pressure rod 45 to resist the wedge block 46 and drive the wedge block 46 to slide toward the middle, thereby lifting the adsorption driving plate 48 in the middle of the wedge block 46 and sliding it upward. Since the adsorption channel 47 has only one channel connected to the adsorption suction cup 211 at the bottom, and the adsorption suction cup 211 is in contact with the wall, the upward sliding of the adsorption channel 47 generates a negative pressure in the adsorption channel 47. By utilizing this negative pressure, the connection between the positioning bracket 21 and the wall can be further guaranteed, the stable installation of the mounting device 2 can be guaranteed, and the stability of the detection probe 14 can be guaranteed, thereby ensuring the stability of the detection result.

[0045] A filling assembly 5 is provided at the bottom of the No. 1 downward pressure rod 44, and the filling assembly 5 includes a water storage fold line groove 51 opened in the mounting bracket 22, the water storage fold line groove 51 is connected with the one-way water seepage ring groove 52, the one-way water seepage ring groove 52 is opened in the adsorption suction cup 211, and a water seepage hole 53 is provided at the bottom of the adsorption suction cup 211, and the water seepage hole 53 is connected with the one-way water seepage ring groove 52, a water squeezing plate 54 is slidably connected in the water storage fold line groove 51, and a filling driving rod 55 is fixedly connected to the upper surface of the water squeezing plate 54, and the other end of the filling driving rod 55 abuts against the No. 1 downward pressure rod 44, and a No. 2 return spring 56 is fixedly connected to the upper surface of the water squeezing plate 54, and the other end of the No. 2 return spring 56 is fixedly connected to the upper surface of the water storage fold line groove 51.

[0046] A water replenishment port 57 is provided in the positioning bracket 21 , a water inlet check valve 59 is installed in the water replenishment port 57 , and a water outlet check valve 58 is installed in the water storage folding groove 51 .

[0047] However, after the concrete wall is poured, its surface may have some gaps due to its roughness. These gaps may make it impossible to achieve complete sealing between the adsorption channel 47 and the adsorption suction cup 211. Therefore, through the design of the filling component 5, the gap between the adsorption suction cup 211 and the wall is filled to ensure the sealing of the adsorption channel 47 and the adsorption suction cup 211, to ensure the normal generation of negative pressure inside. During the descent of the No. 1 down-pressure rod 44, the filling drive rod 55 is driven to slide downward synchronously, thereby driving the squeezing plate 54 to squeeze the space inside the water storage folding groove 51. The water storage folding groove 51 is designed with a water outlet check valve 58 and a water inlet check valve 59, so that the internal negative pressure is not completely filled. A closed space is formed, and the space in the water storage fold line groove 51 is squeezed by the water squeezing plate 54, thereby driving the filling liquid in the water storage fold line groove 51 to seep out through the seepage hole 53 at the bottom of the adsorption suction cup 211. This design can effectively ensure the firm connection between the adsorption suction cup 211 and the wall, and further ensure the stable installation of the positioning bracket 21. The water replenishment port 57 is used to fill the filling liquid into the water storage fold line groove 51. The other end of the water replenishment port 57 is connected to the liquid storage tank (not marked). The water squeezing plate 54 is reset under the action of the No. 2 reset spring 56. The water squeezing plate 54 slides in the opposite direction to absorb the filling liquid from the liquid storage tank to ensure that the water storage fold line groove 51 is always filled with the filling liquid.

[0048] Example 3: This example is intended to help solve the problem that dust around the cracks will affect the detection results. This example is an explanation based on Example 2. For details, please refer to Figures 1 to 10 A cleaning assembly 6 is provided at the bottom of the No. 2 lower pressure rod 45. The cleaning assembly 6 includes a rotating groove 61 and a cleaning movable groove 62 which are opened in the positioning bracket 21. A rotating cleaning block 63 is rotatably connected in the rotating groove 61. A side wall of the rotating cleaning block 63 is fixedly connected with a limiting ring 67. The limiting ring 67 is rotatably connected in the limiting groove 66. The limiting groove 66 is opened in the positioning bracket 21. An air outlet folding rod 610 is fixedly connected to the outer side of the rotating cleaning block 63.

[0049] An installation groove 64 is provided on the outer wall of the rotating cleaning block 63, and a torsion spring 65 is installed in the installation groove 64. The other end of the torsion spring 65 is installed in the rotating groove 61. One end of the rotating cleaning block 63 away from the air outlet folding rod 610 is fixedly connected to a driving block 68. A rack 69 is provided on the outer side of the driving block 68. The rack 69 is installed at the bottom of the slide plate 611. The slide plate 611 is slidably connected in the cleaning movable groove 62. A cleaning driving rod 612 is fixedly connected to the upper surface of the slide plate 611. The other end of the cleaning driving rod 612 abuts against the lower surface of the No. 2 downward pressure rod 45. A No. 3 return spring 613 is fixedly connected to the upper surface of the slide plate 611. The other end of the No. 3 return spring 613 is installed at the top of the cleaning movable groove 62.

[0050] The cleaning assembly 6 is used to clean the dust at the detection position of the detection probe 14. When the No. 2 down-pressing rod 45 descends, the No. 2 down-pressing rod 45 drives the cleaning driving rod 612 to slide downward synchronously, thereby driving the slide plate 611 and the rack 69 fixedly connected thereto to slide downward in the cleaning movable groove 62. During the downward sliding process of the slide plate 611, the gas in the cleaning movable groove 62 will be continuously pressurized and discharged through the channel between the rotating cleaning block 63 and the air outlet folding rod 610. Through this design, the dust at the detection probe 14 can be effectively cleaned, thereby ensuring the detection result. As a result, the rack 69 will continuously clash with the driving block 68 during the downward sliding process, and drive the rotating cleaning block 63 fixedly connected to the driving block 68 to rotate. Due to the design of the mounting groove 64 and the torsion spring 65, when the tooth block of the rack 69 does not clash with the driving block 68, the rotating cleaning block 63 quickly resets and rotates. Through this continuous rotation and reset, the rotating cleaning block 63 can be effectively driven to swing. Through this swing, the cleaning range of the air outlet folding rod 610 can be further improved, and the cleanliness of the detection area can be further guaranteed to reduce the error of the detection result.

[0051] This embodiment also discloses a method for using a construction engineering crack detection device, comprising the following steps: Ensure that the concrete surface of the test site is clean and flat, and polish or smooth it if necessary. Prepare the crack detector, including the transmitting transducer and the receiving transducer, as well as the necessary measuring tools; Place the transmitting transducer and the receiving transducer on the same side near the crack, keep a certain distance between them, and read and record the propagation time of the ultrasonic wave when it does not cross the crack. Place the transmitting transducer and the receiving transducer on both sides of the crack axis, with the central axis perpendicular to the crack direction, and keep a certain distance between them. Read and record the time it takes for the ultrasonic wave to propagate across the crack. The depth of the crack is calculated using the relevant formula based on the acoustic time values ​​measured without crossing the crack and across the crack, combined with the propagation speed of ultrasonic waves in concrete. Multiple measurements can be made and the average value taken to improve accuracy; Analyze the crack depth data, combine the location, direction and shape of the cracks in the structure, evaluate the impact of the cracks on the structural safety, and formulate corresponding treatment measures.

[0052] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0053] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A construction engineering crack detection device, comprising a detection device (1), characterized in that: The detection device (1) comprises an ultrasonic instrument (11), an ultrasonic connection joint (12) being installed on one side of the ultrasonic instrument (11), the ultrasonic connection joint (12) being connected to a detection probe (14) via a cable (13), and the detection probe (14) being installed on a wall via an installation device (2); The mounting device (2) is arranged on the outside of the detection probe (14), and the mounting device (2) comprises a positioning bracket (21) and a mounting bracket (22). The positioning bracket (21) is used to be connected to a wall surface, and the mounting bracket (22) is mounted above the positioning bracket (21). The positioning bracket (21) is mounted on the wall surface via an adsorption component (4). The mounting bracket (22) is used to mount the detection probe (14). A plug-in slot (23) is provided in the positioning bracket (21), and a plug-in block (24) is plugged into the plug-in slot (23). The plug-in block (24) is fixedly connected to the bottom of the positioning bracket (21). The detection probe (14) is fixed by plugging the positioning bracket (21) and the mounting bracket (22). A suction cup (211) for preliminary fixing is installed at the bottom of the positioning bracket (21).

2. A construction engineering crack detection device according to claim 1, characterized in that: A working slide groove (25) is provided in the mounting bracket (22), a working slide block (26) is slidably connected in the working slide groove (25), a rotating groove (27) is provided in the working slide block (26), a rotating rod (28) is rotatably connected in the rotating groove (27), a spiral groove (29) is provided at the bottom of the rotating rod (28), a spiral rod (210) is arranged in the spiral groove (29), the detection probe (14) is installed at the bottom of the spiral rod (210), and a cable (13) is installed at the top of the spiral rod (210).

3. A construction engineering crack detection device according to claim 2, characterized in that: A positioning assembly (3) for adjusting the position of the detection probe (14) is arranged in the working slide block (26), and the positioning assembly (3) comprises a limiting slide groove (31) and a positioning triangular groove (33) provided in the mounting bracket (22); a limiting slide groove (31) is slidably connected to the limiting slide groove (32); the limiting slide groove (32) is fixedly connected to the outer wall of the working slide block (26); a positioning slide groove (34) is provided on the side wall of the working slide block (26); a positioning plug-in block (35) is slidably connected to the positioning slide groove (34); a positioning spring (36) is fixedly connected to one side of the positioning plug-in block (35); the other end of the positioning spring (36) is fixedly connected to the positioning slide groove (34); and the bottom of the positioning plug-in block (35) is plugged into the positioning triangular groove (33).

4. A construction engineering crack detection device according to claim 3, characterized in that: A cross bar (37) is fixedly connected to the inner side of the positioning bracket (21), and a central positioning rod (38) is fixedly connected to the center of the lower surface of the cross bar (37).

5. A construction engineering crack detection device according to claim 1, characterized in that: The adsorption assembly (4) comprises an extrusion plate (41) slidably connected to the plug-in slot (23), a compression spring (42) is fixedly connected to the lower surface of the extrusion plate (41), the other end of the compression spring (42) is fixedly connected to the plug-in slot (23), and two downward pressing grooves (43) are provided in the positioning bracket (21), a first downward pressing rod (44) and a second downward pressing rod (45) are respectively slidably connected in the downward pressing grooves (43), and the first downward pressing rod (44) contacts the bottom of the second downward pressing rod (45). A wedge block (46) slides, and an adsorption driving plate (48) is arranged above the other inclined surface of the wedge block (46). The adsorption driving plate (48) is slidably connected in the adsorption channel (47). The adsorption channel (47) is opened in the positioning bracket (21). The adsorption channel (47) is communicated with the adsorption suction cup (211). The upper surface of the adsorption driving plate (48) is fixedly connected to a No. 1 return spring (49), and the other end of the No. 1 return spring (49) is fixedly connected to the top of the adsorption channel (47).

6. A construction engineering crack detection device according to claim 5, characterized in that: A filling assembly (5) is provided at the bottom of the No. 1 downward pressure rod (44), and the filling assembly (5) includes a water storage folding groove (51) provided in the mounting bracket (22), the water storage folding groove (51) is connected to a one-way water seepage ring groove (52), the one-way water seepage ring groove (52) is provided in the adsorption suction cup (211), a water seepage hole (53) is provided at the bottom of the adsorption suction cup (211), the water seepage hole (53) is connected to the one-way water seepage ring groove (52), a water squeezing plate (54) is slidably connected in the water storage folding groove (51), a filling driving rod (55) is fixedly connected to the upper surface of the water squeezing plate (54), the other end of the filling driving rod (55) abuts against the No. 1 downward pressure rod (44), a No. 2 return spring (56) is fixedly connected to the upper surface of the water squeezing plate (54), and the other end of the No. 2 return spring (56) is fixedly connected to the upper surface of the water storage folding groove (51).

7. A construction engineering crack detection device according to claim 6, characterized in that: A water replenishment port (57) is provided in the positioning bracket (21), a water inlet check valve (59) is installed in the water replenishment port (57), and a water outlet check valve (58) is installed in the water storage folding groove (51).

8. A construction engineering crack detection device according to claim 5, characterized in that: A cleaning assembly (6) is provided at the bottom of the second downward pressure rod (45), and the cleaning assembly (6) includes a rotating groove (61) and a cleaning movable groove (62) provided in the positioning bracket (21); a rotating cleaning block (63) is rotatably connected in the rotating groove (61); a side wall of the rotating cleaning block (63) is fixedly connected to a limiting ring (67); the limiting ring (67) is rotatably connected in a limiting groove (66); the limiting groove (66) is provided in the positioning bracket (21); and an air outlet folding rod (610) is fixedly connected to the outer side of the rotating cleaning block (63).

9. A construction engineering crack detection device according to claim 8, characterized in that: The outer wall of the rotating cleaning block (63) is provided with a mounting groove (64), a torsion spring (65) is installed in the mounting groove (64), and the other end of the torsion spring (65) is installed in the rotating groove (61); the end of the rotating cleaning block (63) away from the air outlet folding rod (610) is fixedly connected to a driving block (68), and a rack (69) is arranged on the outer side of the driving block (68), and the rack (69) is installed at the bottom of a slide plate (611); the slide plate (611) is slidably connected in the cleaning movable groove (62); the upper surface of the slide plate (611) is fixedly connected to a cleaning driving rod (612), and the other end of the cleaning driving rod (612) contacts the lower surface of the No. 2 pressing rod (45); the upper surface of the slide plate (611) is fixedly connected to a No. 3 return spring (613), and the other end of the No. 3 return spring (613) is installed at the top of the cleaning movable groove (62).

10. A method for using a construction engineering crack detection device, using the construction engineering crack detection device according to claims 1-9, characterized in that: The following steps are also included: S1. Ensure that the concrete surface of the test site is clean and flat, and polish or smooth it if necessary. Prepare the crack detector, including the transmitting transducer and the receiving transducer, as well as the necessary measuring tools; S2. Place the transmitting transducer and the receiving transducer on the same side near the crack, keep a certain distance between them, and read and record the propagation time of the ultrasonic wave when it does not cross the crack; S3, placing the transmitting transducer and the receiving transducer on the symmetrical sides of the crack axis, with the central axis perpendicular to the crack direction, and also maintaining a certain distance, reading and recording the time of ultrasonic wave propagation across the crack; S4. According to the acoustic time values ​​measured without crossing the crack and across the crack, combined with the propagation speed of ultrasonic waves in concrete, the depth of the crack is calculated using the relevant formula. Multiple measurements can be made and the average value can be taken to improve accuracy; S5. Analyze the crack depth data, combine the location, direction and shape of the cracks in the structure, evaluate the impact of the cracks on the structural safety, and formulate corresponding treatment measures.

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