A nondestructive testing device for strength of large-volume concrete components

Abstract

The present invention discloses a non-destructive testing device for the strength of large-volume concrete components, which relates to the technical field of non-destructive testing of the strength of large-volume concrete. The device comprises a support frame mounted on the top of the concrete body, one side of the support frame being provided with an ultrasonic rebound component for performing non-destructive testing on the concrete body; the top of the support frame being provided with a punctuation component for facilitating accurate detection by the ultrasonic rebound component; and one side of the support frame being provided with a splitting component for separating the punctuation component from the support frame. In the present invention, a laser transmitter can uniformly project a detection point onto the surface of the concrete body. When the laser transmitter emits a laser beam onto the surface of the concrete body, a laser receiver on the circumferential outer wall of the rebound detector receives the laser signal. The linear propagation characteristics of the laser can accurately determine the position of the rebound detection point, ensuring that each rebound detection is performed at a predetermined accurate position, thereby improving the accuracy and consistency of the detection data.

Description

Technical Field

[0001] The present invention relates to the technical field of nondestructive testing of mass concrete strength, and in particular to a nondestructive testing device for mass concrete component strength. Background Art

[0002] In modern construction, large-volume concrete components are widely used in important structures such as bridges, dams, and high-rise building foundations. The strength of these components is directly related to the quality and safety of the entire project. Therefore, accurate testing of the strength of large-volume concrete components is of great significance.

[0003] Currently, traditional concrete strength testing methods primarily include core drilling and rebound methods. While the core drilling method can accurately determine concrete strength, it is a destructive test that can cause localized damage to the structure, impacting its integrity and bearing capacity. This is particularly true for large concrete components, as the limited number of cores drilled makes it difficult to fully reflect the overall strength of the structure. Furthermore, the structure must be repaired after core drilling, increasing construction costs and time. The rebound method is relatively simple to operate, but it infers strength based solely on the surface hardness of the concrete and is susceptible to surface conditions (such as carbonation depth and humidity). The test results are highly discrete, making accuracy difficult to guarantee. Detection errors are even more pronounced for large concrete components with internal defects or inhomogeneities.

[0004] Furthermore, the inspection process for large-volume concrete components faces challenges such as low inspection efficiency and inaccurate inspection point positioning. Due to the large size of large-volume concrete components, traditional inspection methods require extensive manual labor, which is not only time-consuming and labor-intensive, but also prone to errors in manual marking and positioning, resulting in test results that fail to truly reflect the component's actual strength distribution. Therefore, a nondestructive strength testing device for large-volume concrete components is urgently needed to address these issues. Summary of the Invention

[0005] In response to the problems in the related art, the present invention proposes a non-destructive testing device for the strength of large-volume concrete components to overcome the above-mentioned technical problems existing in the existing related art.

[0006] The technical solution of the present invention is achieved as follows:

[0007] A nondestructive testing device for the strength of a large-volume concrete component comprises a support frame mounted on top of the concrete body, an ultrasonic rebound component for performing nondestructive testing on the concrete body being provided on one side of the support frame; and a punctuation component for facilitating accurate testing by the ultrasonic rebound component being provided on the top of the support frame.

[0008] A splitting assembly for separating the punctuation assembly from the support frame is provided on one side of the support frame;

[0009] The ultrasonic rebound assembly includes a fixed disk and an ultrasonic detector, a telescopic rod and an electric push rod are fixedly connected to the outer wall of one side of the fixed disk, a rotating disk is provided on one side of the fixed disk, a threaded rod is threadedly connected to the outer wall of one side of the rotating disk, one end of the threaded rod is fixedly connected to the ultrasonic detection probe, an end of the threaded rod away from the ultrasonic detection probe is fixedly connected to the telescopic end of the telescopic rod, a laser receiver is plugged into one side of the rotating disk, and the output end of the electric push rod is fixedly connected to one end of the laser receiver;

[0010] A second shell is fixedly connected to one side of the support frame, and a displacement component for driving the ultrasonic rebound component to adjust its position is provided inside the second shell.

[0011] Preferably, the disassembly assembly includes a first shell arranged on one side of the support frame, a first motor is fixedly connected to an outer wall of one side of the first shell, a second threaded screw is fixedly connected to an output end of the first motor, a second threaded sleeve is threadedly connected to the circumferential outer wall of the second threaded screw, first guide posts are fixedly connected to the inner walls of both sides of the first shell, a second guide cylinder is sleeved on the outer wall of the first guide post, the second guide cylinder is fixedly connected to the second threaded screw, one end of the second guide cylinder is fixedly connected to a vertical plate, a clamping column is fixedly connected to one side of the vertical plate, a positioning hole matching the clamping column is opened on one side of the support frame, and the second threaded screw The circumferential outer wall of the fourth helical gear is fixedly connected to the fourth helical gear, the circumferential outer wall of the fourth helical gear is meshed with the third helical gear, the top of the third helical gear is fixedly connected to the rotating column, the circumferential outer wall of the rotating column is fixedly connected to the first helical gear, the circumferential outer wall of the first helical gear is meshed with the second helical gear, one side of the second helical gear is fixedly connected to the first threaded screw, the circumferential outer wall of the first threaded screw is threadedly connected to the first threaded sleeve, the circumferential outer wall of the first threaded sleeve is fixedly connected to the bent column, one side of the first shell is provided with a first limiting groove, one end of the bent column passes through the inside of the first limiting groove, and one end of the bent column is fixedly connected to the punctuation component.

[0012] Preferably, a transverse column is fixedly connected to an outer wall of one side of the first shell, a fixing cylinder is provided on the top of the support frame, and an end of the transverse column away from the first shell is inserted into the interior of the fixing cylinder.

[0013] Preferably, the punctuation assembly includes a mounting seat arranged on one side of the support frame, an assembly groove is opened on one side of the support frame, the mounting seat is clamped inside the assembly groove, and the other side of the mounting seat is fixedly connected with a three-dimensional laser scanner and a laser transmitter respectively, and the circumferential outer wall of the rebound detector is provided with a laser receiver that cooperates with the laser transmitter.

[0014] Preferably, the displacement assembly includes a second shell fixedly connected to one side of the support frame, the top outer wall of the second shell is fixedly connected to the second motor, the output end of the second motor is fixedly connected to a fourth threaded screw, the circumferential outer wall of the fourth threaded screw is threadedly connected to a fourth threaded sleeve, and one side of the fourth threaded sleeve is fixedly connected to a third shell, second limiting grooves are provided on both sides of the second shell, both ends of the third shell pass through the interior of the second limiting grooves, a second guide column is fixedly connected to the interior of the second shell, the circumferential outer wall of the second guide column is sleeved with a first guide cylinder, the first guide cylinder is fixedly connected to the outer wall of one side of the third shell, the outer wall of one side of the third shell is fixedly connected to the third motor, the output end of the third motor is fixedly connected to a fifth threaded screw, the circumferential outer wall of the fifth threaded screw is threadedly connected to a fifth threaded sleeve, one side of the fifth threaded sleeve is fixedly connected to a reinforcing column, one end of the reinforcing column is connected to the fourth motor, a fourth limiting groove is provided on one side of the third shell, one end of the reinforcing column passes through the interior of the fourth limiting groove, and the output end of the fourth motor is fixedly connected to the outer wall of one side of the fixed disk.

[0015] Preferably, the output end of the fourth motor is fixedly connected to a gear column, the circumferential outer wall of the gear column is meshed with a gear plate, and the swing plate is fixedly connected to the circumferential outer wall of the threaded rod.

[0016] Preferably, the circumferential outer wall of the second threaded screw is fixedly connected to a driving wheel, the circumferential outer wall of the driving wheel is transmission-connected to a transmission belt, the driving wheel is transmission-connected to a driven wheel through the transmission belt, the circumferential inner wall of the driven wheel is fixedly connected to a third threaded screw, one side outer wall of the first shell is fixedly connected to an L-shaped plate, and the circumferential outer wall of the third threaded screw is threadedly connected to a third threaded sleeve.

[0017] Preferably, a third limiting groove is provided on one side outer wall of the L-shaped plate, and a sliding rod is slidably connected inside the third limiting groove. One end of the sliding rod is fixedly connected to one side outer wall of the third threaded sleeve, and the other end of the sliding rod is fixedly connected to a slide. One side of the slide is in contact with one side outer wall of the L-shaped plate.

[0018] Preferably, a baffle is fixedly connected to an outer wall of one side of the third threaded sleeve, springs distributed at equal distances are fixedly connected to an outer wall of one side of the baffle, and a movable plate is fixedly connected to one end of the spring away from the baffle.

[0019] Preferably, one end of the rotating column extending to the top of the first shell is fixedly connected to a swing plate, the end of the swing plate away from the rotating column is fixedly connected to a fixed column, the bottom end of the fixed column is fixedly connected to a fixed frame, and the inner walls on both sides of the fixed frame are rotatably connected to cleaning rollers for cleaning the surface of the concrete body.

[0020] Beneficial effects of the present invention:

[0021] The present invention provides a non-destructive testing device for the strength of large-volume concrete components. The device uses a three-dimensional laser scanner to scan the surface of the concrete body, quickly obtains detailed information such as its shape and size, and constructs a three-dimensional model of the concrete surface. Based on this data, the device can accurately plan the detection path and detection points of the ultrasonic rebound component, without the need for traditional manual marking, which is not only time-consuming and labor-intensive, but also may cause manual marking errors, resulting in certain errors in the detection results. When the entire device has completely passed through the concrete body, the three-dimensional laser scanner receives complete information on the shape and size of the concrete body. At this time, the staff moves the entire device to the middle position of the concrete body, so that the subsequent laser transmitter can evenly project the detection points onto the surface of the concrete body. When the laser transmitter emits the laser beam head on the surface of the concrete body, the laser receiver on the outer wall of the circumference of the rebound detector receives the laser signal. The linear propagation characteristics of the laser can accurately determine the position of the rebound detection point, ensuring that each rebound detection is performed at the predetermined accurate position, thereby improving the accuracy and consistency of the detection data.

[0022] The present invention provides a nondestructive testing device for the strength of large-volume concrete components. The first motor can drive the second threaded screw to rotate, and then the second threaded sleeve can drive the clamping column to disengage from the positioning hole, completing the separation of the support frame and the first shell, avoiding the first shell from blocking the subsequent detection movement of the support frame. At the same time, during the rotation of the rotating column, the first gear and the second gear are engaged with each other, thereby driving the first threaded screw to rotate, so that the support frame can be separated from the first shell and the mounting seat can be disengaged from the assembly groove at the same time, ensuring that the entire punctuation component can always be in the middle of the concrete body, realizing accurate punctuation projection at all times, and improving the accuracy of the detection results.

[0023] The present invention provides a non-destructive testing device for the strength of large-volume concrete components. Through the provision of an ultrasonic rebound component, when the ultrasonic rebound component is working, in order to avoid detection interference, the ultrasonic detection probe is located on a side away from the concrete body compared to the rebound detector, and then the rebound detector is pushed by an electric push rod to squeeze it toward the surface of the concrete body, and the rebound detector launches a rebound pull rod driven by a rebound spring toward the concrete surface, and the rebound pull rod rebounds after hitting the concrete surface, and the rebound detector records the rebound value. When the rebound value detection of a punctuation point is completed, the fourth motor is started, and the fourth motor can drive the movable disk to rotate, thereby realizing the interchange of the positions of the rebound detector and the ultrasonic detection probe, which is convenient for subsequent ultrasonic detection of the concrete body, and during the starting process of the fourth motor, the gear column can be driven to rotate, and the mutual engagement between the gear column and the gear disk can bring The moving threaded rod makes circular motion together, and a threaded connection is formed between the threaded rod and the rotating disk. Therefore, the ultrasonic detection probe can also be driven to make horizontal motion during the rotation of the screw, thereby ensuring that in the process of exchanging the positions of the ultrasonic detection probe and the rebound detector, the ultrasonic detection probe is quickly reset to contact one side of the concrete body. At this time, the ultrasonic detector emits an ultrasonic pulse, and the ultrasonic wave propagates inside the concrete. When encountering different medium interfaces, it will be reflected, refracted and scattered. Since the density and strength of the concrete will affect the propagation speed of the ultrasonic wave, by measuring the time from the emission to the reception of the ultrasonic wave and combining the distance between the probes, the propagation speed of the ultrasonic wave in the concrete can be calculated. Finally, the ultrasonic sound velocity and the rebound value are combined, and according to a specific strength measurement curve or algorithm, the strength of the concrete can be accurately inferred, thereby realizing non-destructive testing of large-volume concrete.

[0024] The present invention provides a non-destructive testing device for the strength of large-volume concrete components. Through the provided cleaning roller, when the staff pushes the device to collect surface information of the concrete body, the cleaning roller can clean the surface of the concrete body, thereby ensuring the cleanliness of the surface of the concrete body and avoiding affecting the subsequent three-dimensional laser scanner's collection of information and the clarity of the laser transmitter's projection of punctuation marks. At the same time, when the first shell is separated from the support frame, the rotating column can drive the swing plate and the fixed column to rotate together, thereby avoiding the cleaning roller from blocking the movement of the support frame and ensuring the continuity of the entire testing work. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 It is a schematic diagram of the working state of the present invention.

[0027] Figure 2 It is a schematic diagram of the overall front structure of the present invention.

[0028] Figure 3 For the present invention Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0029] Figure 4 It is a schematic diagram of the overall structure of the present invention on one side of the concrete body.

[0030] Figure 5 It is a schematic diagram of the overall half-section structure of the present invention on one side of the concrete body.

[0031] Figure 6 This is a schematic diagram of the overall split front structure on one side of the concrete body of the present invention.

[0032] Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure at point B in the middle.

[0033] Figure 8 For the present invention Figure 6 Schematic diagram of the enlarged structure at point C in the middle.

[0034] Figure 9 It is a schematic diagram of the overall split back structure on one side of the concrete main body of the present invention.

[0035] Figure 10 For the present invention Figure 9 Schematic diagram of the enlarged structure at point D in the middle.

[0036] In the picture:

[0037] 1. Support frame; 2. First housing; 3. Swing plate; 4. Fixed column; 5. Rotating column; 6. First limiting groove; 7. Horizontal column; 8. First threaded sleeve; 9. Bending column; 10. Mounting seat; 11. Second housing; 12. Second limiting groove; 13. Fixed cylinder; 15. Ultrasonic detector; 16. Cleaning roller; 17. Fixed frame; 18. First motor; 19. 3D laser scanner; 20. Laser transmitter; 21. Concrete body; 22. Second motor; 23. Third housing; 24. Third motor; 25. Rotating disk; 26. Rebound detector; 27. Laser receiver; 28. Ultrasonic detection probe; 29. ​​Threaded rod; 30. Telescopic rod; 31. Gear column; 32. Gear disk 33. Fixed plate; 34. Assembly groove; 35. L-shaped plate; 36. First bevel gear; 37. Second bevel gear; 38. First threaded screw; 39. Electric push rod; 40. Third bevel gear; 41. Fourth bevel gear; 42. Driving wheel; 43. First guide column; 44. Second threaded screw; 45. Clamping column; 46. Second threaded sleeve; 47. Driven wheel; 48. Transmission belt; 49. Third threaded screw; 50. Third threaded sleeve; 51. Third limiting groove; 52. Slide plate; 53. Movable plate; 54. Spring; 55. Baffle; 56. Fourth threaded screw; 57. First guide cylinder; 58. Fourth motor; 59. Fourth limiting groove; 60. Second guide cylinder; 61. Second guide column. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention are within the scope of protection of the present invention.

[0039] See also Figures 1-10 A nondestructive testing device for the strength of a large-volume concrete component, comprising a support frame 1 mounted on top of a concrete body 21, an ultrasonic rebound component for performing nondestructive testing on the concrete body 21 being provided on one side of the support frame 1; and a punctuation component for facilitating accurate detection by the ultrasonic rebound component being provided on the top of the support frame 1;

[0040] A splitting assembly for separating the punctuation assembly from the support frame 1 is provided on one side of the support frame 1;

[0041] The ultrasonic rebound assembly includes a fixed disk 33 and an ultrasonic detector 15. The outer wall of one side of the fixed disk 33 is fixedly connected to the telescopic rod 30 and the electric push rod 39. A rotating disk 25 is provided on one side of the fixed disk 33. The outer wall of one side of the rotating disk 25 is threadedly connected to a threaded rod 29. One end of the threaded rod 29 is fixedly connected to an ultrasonic detection probe 28. The end of the threaded rod 29 away from the ultrasonic detection probe 28 is fixedly connected to the telescopic end of the telescopic rod 30. A laser receiver 27 is inserted into one side of the rotating disk 25, and the output end of the electric push rod 39 is fixedly connected to one end of the laser receiver 27.

[0042] A second shell 11 is fixedly connected to one side of the support frame 1. A displacement component is provided inside the second shell 11 for driving the ultrasonic rebound component to adjust its position. When performing strength testing on a large-volume concrete body 21, the support frame 1 installed on top of the concrete body 21 plays the role of supporting and fixing various components. The punctuation component uses a three-dimensional laser scanner 19 to obtain surface information of the concrete body 21 and plan the detection path and detection points of the ultrasonic rebound component.

[0043] The ultrasonic rebound assembly works in coordination with the telescopic rod 30, the electric push rod 39, the rotating disk 25, the threaded rod 29 and the ultrasonic detection probe 28 to achieve ultrasonic and rebound detection of concrete;

[0044] The displacement component can drive the ultrasonic rebound component to adjust its position within the second housing 11 to meet the detection requirements of different positions;

[0045] The split components can separate the punctuation components from the support frame 1, which is convenient for operation and maintenance. The components cooperate with each other to achieve non-destructive and accurate detection of the strength of large-volume concrete components.

[0046] Furthermore, the disassembly component includes a first shell 2 arranged on one side of the support frame 1, and the outer wall of one side of the first shell 2 is fixedly connected to the first motor 18, the output end of the first motor 18 is fixedly connected to the second threaded screw 44, the circumferential outer wall of the second threaded screw 44 is threadedly connected to the second threaded sleeve 46, the inner walls of both sides of the first shell 2 are fixedly connected to the first guide column 43, the outer wall of the first guide column 43 is sleeved with the second guide cylinder 60, the second guide cylinder 60 is fixedly connected to the second threaded screw 44, and one end of the second guide cylinder 60 is fixedly connected to the vertical plate, and the vertical plate One side of the support frame 1 is fixedly connected with a card column 45, and a positioning hole that matches the card column 45 is opened on one side of the support frame 1. The circumferential outer wall of the second threaded screw 44 is fixedly connected to the fourth bevel gear 41, and the circumferential outer wall of the fourth bevel gear 41 is engaged with the third bevel gear 40. The top of the third bevel gear 40 is fixedly connected to the rotating column 5, and the circumferential outer wall of the rotating column 5 is fixedly connected to the first bevel gear 36. The circumferential outer wall of the first bevel gear 36 is engaged with the second bevel gear 37. One side of the second bevel gear 37 is fixedly connected to the first threaded screw 38, and the circumferential outer wall of the first threaded screw 38 is fixedly connected to the first bevel gear 38. A first threaded sleeve 8 is threadedly connected, and a bent column 9 is fixedly connected to the circumferential outer wall of the first threaded sleeve 8. A first limiting groove 6 is opened on one side of the first shell 2, and one end of the bent column 9 passes through the inside of the first limiting groove 6. One end of the bent column 9 is fixedly connected to the punctuation component. When the punctuation component needs to be separated, the first motor 18 is started, and its output end drives the second threaded screw 44 to rotate, and the second threaded sleeve 46 moves on the second threaded screw 44. Since the second guide cylinder 60 is fixedly connected to the second threaded screw 44 and is sleeved on the first guide column 43, the second guide cylinder 60 will drive the vertical plate and the clamping column 45 to move, so that the clamping column 45 disengages from the positioning hole of the support frame 1. At the same time, the fourth bevel gear 41 on the second threaded screw 44 drives the third bevel gear 40 to rotate, thereby rotating the rotating column 5. The first bevel gear 36 on the rotating column 5 drives the second bevel gear 37 to rotate, and the first threaded screw 38 rotates accordingly. The first threaded sleeve 8 moves on the first threaded screw 38, and the bent column 9 slides in the first limiting groove 6, thereby disengaging the mounting seat 10 of the punctuation assembly from the assembly groove 34 of the support frame 1, completing the separation operation of the punctuation assembly.

[0047] Furthermore, a transverse column 7 is fixedly connected to the outer wall of one side of the first shell 2, and a fixed cylinder 13 is provided on the top of the support frame 1. The end of the transverse column 7 away from the first shell 2 is inserted into the inside of the fixed cylinder 13, thereby enhancing the stability between the first shell 2 and the support frame 1, ensuring that the disassembled components and related parts can work stably during the detection process, and avoiding detection errors or equipment failures due to unstable connections.

[0048] Furthermore, the punctuation component includes a mounting base 10 arranged on one side of the support frame 1, and an assembly groove 34 is opened on one side of the support frame 1. The mounting base 10 is clamped in the inside of the assembly groove 34, and the other side of the mounting base 10 is fixedly connected with a three-dimensional laser scanner 19 and a laser emitter 20 respectively. The circumferential outer wall of the rebound detector 26 is provided with a laser receiver 27 that cooperates with the laser emitter 20. The mounting base 10 is clamped in the assembly groove 34 of the support frame 1, and the three-dimensional laser scanner 19 on the other side scans the surface of the concrete body 21 to obtain information such as shape and size, construct a three-dimensional model, and plan accurate detection paths and detection points for the ultrasonic rebound component. At the same time, the laser emitter 20 emits a laser beam, and the laser receiver 27 on the circumferential outer wall of the rebound detector 26 receives the signal, and utilizes the linear propagation characteristics of the laser to accurately determine the position of the rebound detection point, thereby improving the accuracy and consistency of the detection data.

[0049] Furthermore, the displacement assembly includes a second shell 11 fixedly connected to one side of the support frame 1, the top outer wall of the second shell 11 is fixedly connected to the second motor 22, the output end of the second motor 22 is fixedly connected to the fourth threaded screw 56, the circumferential outer wall of the fourth threaded screw 56 is threadedly connected to the fourth threaded sleeve, and one side of the fourth threaded sleeve is fixedly connected to the third shell 23, second limiting grooves 12 are provided on both sides of the second shell 11, and the two ends of the third shell 23 pass through the interior of the second limiting grooves 12, the interior of the second shell 11 is fixedly connected to the second guide column 61, the circumferential outer wall of the second guide column 61 is sleeved with the first guide cylinder 57, the first guide cylinder 57 is fixedly connected to the outer wall of one side of the third shell 23, the outer wall of one side of the third shell 23 is fixedly connected to the third motor 24, the output end of the third motor 24 is fixedly connected to the fifth threaded screw, the circumferential outer wall of the fifth threaded screw is threadedly connected to the fifth threaded sleeve, and one side of the fifth threaded sleeve is fixedly connected to the A fourth motor 58 is connected to one end of the reinforcing column, and a fourth limiting groove 59 is provided on one side of the third shell 23. One end of the reinforcing column passes through the inside of the fourth limiting groove 59. The output end of the fourth motor 58 is fixedly connected to the outer wall of one side of the fixed disk 33. The second motor 22 is started, driving the fourth threaded screw 56 to rotate, and the fourth threaded sleeve moves on the fourth threaded screw 56, so that the third shell 23 moves up and down along the second guide column 61 in the second limiting groove 12 to achieve vertical position adjustment of the ultrasonic rebound assembly. After the third motor 24 is started, the fifth threaded screw is driven to rotate, and the fifth threaded sleeve drives the reinforcing column to move horizontally in the fourth limiting groove 59, thereby adjusting the horizontal position of the ultrasonic rebound assembly. The fourth motor 58 can drive the fixed disk 33 and related components to rotate, thereby achieving the interchange of the positions of the ultrasonic detection probe 28 and the rebound detector 26 and the horizontal movement of the ultrasonic detection probe 28, meeting the automatic detection of the same punctuation rebound and ultrasound.

[0050] Furthermore, the output end of the fourth motor 58 is fixedly connected to a gear column 31, and the circumferential outer wall of the gear column 31 is meshed with a gear disk 32. The swing plate 3 is fixedly connected to the circumferential outer wall of the threaded rod 29. The gear column 31 at the output end of the fourth motor 58 meshes with the gear disk 32. When the fourth motor 58 is started and drives the gear column 31 to rotate, the gear disk 32 rotates accordingly. Because the swing plate 3 is fixedly connected to the circumferential outer wall of the threaded rod 29, the rotation of the gear disk 32 also drives the threaded rod 29 to perform circular motion. Because the threaded rod 29 is threadedly connected to the rotating disk 25, the rotation of the threaded rod 29 can drive the ultrasonic detection probe 28 to perform horizontal motion, enabling rapid resetting of the ultrasonic detection probe 28 and the rebound detector 26 when their positions are interchanged, ensuring efficient detection work.

[0051] Furthermore, the circumferential outer wall of the second threaded screw 44 is fixedly connected to the driving wheel 42, and the circumferential outer wall of the driving wheel 42 is transmission-connected to the transmission belt 48. The driving wheel 42 is transmission-connected to the driven wheel 47 through the transmission belt 48. The circumferential inner wall of the driven wheel 47 is fixedly connected to the third threaded screw 49. The outer wall of one side of the first shell 2 is fixedly connected to the L-shaped plate 35. The circumferential outer wall of the third threaded screw 49 is threadedly connected to the third threaded sleeve 50. The driving wheel 42 on the circumferential outer wall of the second threaded screw 44 drives the driven wheel 47 to rotate through the transmission belt 48, and the third threaded screw 49 fixedly connected to the driven wheel 47 rotates accordingly, ensuring that the third threaded sleeve 50 can stably move along the outer wall of the third threaded screw 49.

[0052] Furthermore, a third limiting groove 51 is provided on the outer wall of one side of the L-shaped plate 35, and a sliding rod is slidably connected inside the third limiting groove 51. One end of the sliding rod is fixedly connected to the outer wall of one side of the third threaded sleeve 50, and the other end of the sliding rod is fixedly connected to a slide plate 52. One side of the slide plate 52 contacts the outer wall of one side of the L-shaped plate 35. When the third threaded sleeve 50 moves on the third threaded screw 49, the slide rod slides in the third limiting groove 51, and the slide plate 52 plays a role in limiting the moving direction of the third threaded sleeve 50 and enhancing stability, thereby ensuring the accuracy and reliability of related components during the movement process and making the equipment run more smoothly.

[0053] Furthermore, a baffle 55 is fixedly connected to the outer wall of one side of the third threaded sleeve 50, and springs 54 distributed at equal distances are fixedly connected to the outer wall of one side of the baffle 55. The end of the spring 54 away from the baffle 55 is fixedly connected to a movable plate 53. The baffle 55 and the movable plate 53 can block the movement of the support frame 1, thereby facilitating the rapid resetting of the subsequent punctuation components.

[0054] Furthermore, one end of the rotating column 5 extending to the top of the first shell 2 is fixedly connected to the swing plate 3, and the end of the swing plate 3 away from the rotating column 5 is fixedly connected to the fixed column 4. The bottom end of the fixed column 4 is fixedly connected to the fixed frame 17. The inner walls on both sides of the fixed frame 17 are rotatably connected to cleaning rollers 16 for cleaning the surface of the concrete body 21. During the movement of the equipment, the cleaning rollers 16 can clean the surface of the concrete body 21 to ensure the cleanliness of the concrete surface, which is beneficial for the three-dimensional laser scanner 19 to collect information and the laser emitter 20 to project punctuation. When the first shell 2 is separated from the support frame 1, the rotating column 5 drives the swing plate 3, the fixed column 4 and the cleaning roller 16 to rotate, so as to avoid the cleaning roller 16 blocking the movement of the support frame 1 and ensure the continuity of the detection work.

[0055] In summary, with the help of the above technical solution of the present invention, when in use, the staff first starts the device and pushes it to move on both sides of the concrete body 21. At this time, the punctuation component starts to work, and the surface of the concrete body 21 is scanned by the three-dimensional laser scanner 19 to quickly obtain detailed information such as its shape and size, and construct a three-dimensional model of the concrete surface. Based on these data, the device can accurately plan the detection path and detection points of the ultrasonic rebound component, without the need for traditional manual punctuation, which is not only time-consuming and labor-intensive, but also may cause manual punctuation confusion resulting in certain errors in the detection results. When the entire device has completely passed through the concrete body 21 After that, the three-dimensional laser scanner 19 receives the complete shape and size information of the concrete body 21. At this time, the staff moves the entire device to the middle position of the concrete body 21, so that the subsequent laser emitter 20 can evenly project the detection point onto the surface of the concrete body 21. When the laser emitter 20 emits the laser beam head on the surface of the concrete body 21, the laser receiver 27 on the outer wall of the rebound detector 26 receives the laser signal. Through the linear propagation characteristics of the laser, the position of the rebound detection point can be accurately determined, ensuring that each rebound detection is carried out at the predetermined accurate position, thereby improving the accuracy and consistency of the detection data.

[0056] When the staff moves the device to the middle of the concrete body 21, the first motor 18 is started, and the second threaded screw 44 can be driven to rotate by the first motor 18, and then the clamping column 45 is driven to disengage from the positioning hole through the second threaded sleeve 46, completing the separation of the support frame 1 and the first shell 2, thereby preventing the first shell 2 from obstructing the subsequent detection movement of the support frame 1. At the same time, during the rotation of the rotating column 5, the first gear and the second gear are engaged with each other, thereby driving the first threaded screw 38 to rotate, so that the support frame 1 can be separated from the first shell 2 and the mounting seat 10 can be disengaged from the assembly groove 34, ensuring that the entire punctuation assembly can always be in the middle of the concrete body 21, realizing accurate punctuation projection at all times, and improving the accuracy of the detection results;

[0057] When the ultrasonic rebound component is working, in order to avoid detection interference, the ultrasonic detection probe 28 is located on the side away from the concrete body 21 compared to the rebound detector 26, and then the rebound detector 26 is pushed by the electric push rod 39 to squeeze it against the surface of the concrete body 21. The rebound detector 26 launches a rebound pull rod driven by a rebound spring to the concrete surface. The rebound pull rod hits the concrete surface and rebounds. The rebound detector 26 records the rebound value. When the rebound value detection of a punctuation point is completed, the fourth motor 58 is started. The fourth motor 58 can drive the movable disk to rotate, so that the position of the rebound detector 26 and the ultrasonic detection probe 28 can be interchanged, which is convenient for subsequent ultrasonic detection of the concrete body 21. In the process of starting the fourth motor 58, the gear column 31 can be driven to rotate. Through the mutual engagement between the gear column 31 and the gear disk 32, the threaded rod 29 can be driven to make a circle together. The screw rod 29 and the rotating disk 25 form a threaded connection, so that the ultrasonic detection probe 28 can also be driven to move horizontally during the rotation of the screw rod, thereby ensuring that the ultrasonic detection probe 28 is quickly reset to contact one side of the concrete body 21 during the position exchange between the ultrasonic detection probe 28 and the rebound detector 26. At this time, the ultrasonic detector 15 emits an ultrasonic pulse, and the ultrasonic wave propagates inside the concrete. When encountering different medium interfaces, it will be reflected, refracted and scattered. Since the density and strength of the concrete will affect the propagation speed of the ultrasonic wave, by measuring the time from the emission to the reception of the ultrasonic wave and combining it with the distance between the probes, the propagation speed of the ultrasonic wave in the concrete can be calculated. Finally, the ultrasonic sound velocity and the rebound value are combined, and according to a specific strength measurement curve or algorithm, the strength of the concrete can be accurately estimated, thereby realizing non-destructive testing of large-volume concrete.

[0058] When the detection work of a punctuation point is completed, the second motor 22 is started to drive the fourth threaded screw 56 to rotate. Under the action of the threaded screw, the fourth threaded sleeve moves up and down along the second guide column 61 in the second limiting groove 12, thereby realizing the vertical position adjustment of the third shell 23 and the ultrasonic rebound assembly installed thereon to meet the detection requirements of concrete components of different heights. When horizontal adjustment is required, the third motor 24 is started to drive the fifth threaded screw to rotate. The fifth threaded sleeve drives the reinforcing column to move horizontally in the fourth limiting groove 59, so that the ultrasonic rebound assembly moves to the specified position in the horizontal direction, thereby realizing the ultrasonic rebound detection work of different punctuation points in a marking area;

[0059] When the staff pushes the device to collect surface information of the concrete body 21, the surface of the concrete body can be cleaned by the cleaning roller 16, ensuring the cleanliness of the surface of the concrete body and avoiding affecting the subsequent information collection of the three-dimensional laser scanner 19 and the clarity of the projected marks by the laser emitter 20. At the same time, when the first shell 2 is separated from the support frame 1, the rotating column 5 can drive the swing plate 3 and the fixed column 4 to rotate together, avoiding the cleaning roller 16 from blocking the movement of the support frame 1.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A non-destructive testing device for the strength of a large-volume concrete member, comprising a support frame (1) mounted on the top of a concrete body (21), characterized in that: An ultrasonic rebound component for performing non-destructive testing on the concrete body (21) is provided on one side of the support frame (1); a punctuation component is provided on the top of the support frame (1) to facilitate accurate testing by the ultrasonic rebound component; A splitting component for separating the punctuation component from the support frame (1) is provided on one side of the support frame (1); The ultrasonic rebound assembly comprises a fixed disk (33) and an ultrasonic detector (15), one side outer wall of the fixed disk (33) is fixedly connected to a telescopic rod (30) and an electric push rod (39), a rotating disk (25) is provided on one side of the fixed disk (33), a threaded rod (29) is threadedly connected to the outer wall of one side of the rotating disk (25), one end of the threaded rod (29) is fixedly connected to an ultrasonic detection probe (28), one end of the threaded rod (29) away from the ultrasonic detection probe (28) is fixedly connected to the telescopic end of the telescopic rod (30), a laser receiver (27) is plugged into one side of the rotating disk (25), and an output end of the electric push rod (39) is fixedly connected to one end of the laser receiver (27); One side of the support frame (1) is fixedly connected to a second shell (11), and a displacement component for driving the ultrasonic rebound component to adjust the position is provided inside the second shell (11). The split component includes a first shell (2) provided on one side of the support frame (1), an outer wall of one side of the first shell (2) is fixedly connected to a first motor (18), an output end of the first motor (18) is fixedly connected to a second threaded screw (44), a circumferential outer wall of the second threaded screw (44) is threadedly connected to a second threaded sleeve (46), and both sides of the inner wall of the first shell (2) are fixed. A first guide column (43) is connected, the outer wall of the first guide column (43) is sleeved with a second guide cylinder (60), the second guide cylinder (60) is fixedly connected to the second threaded screw (44), one end of the second guide cylinder (60) is fixedly connected to a vertical plate, one side of the vertical plate is fixedly connected to a clamping column (45), one side of the support frame (1) is provided with a positioning hole that matches the clamping column (45), the circumferential outer wall of the second threaded screw (44) is fixedly connected to a fourth bevel gear (41), the circumferential outer wall of the fourth bevel gear (41) is meshed with a third bevel gear (40), the The top of the third helical gear (40) is fixedly connected to a rotating column (5), the circumferential outer wall of the rotating column (5) is fixedly connected to a first helical gear (36), the circumferential outer wall of the first helical gear (36) is meshed with a second helical gear (37), one side of the second helical gear (37) is fixedly connected to a first threaded screw (38), the circumferential outer wall of the first threaded screw (38) is threadedly connected to a first threaded sleeve (8), the circumferential outer wall of the first threaded sleeve (8) is fixedly connected to a bent column (9), a first limiting groove (6) is provided on one side of the first housing (2), and the bent column (9) One end of the bending column (9) passes through the inside of the first limiting groove (6), and one end of the bending column (9) is fixedly connected to the punctuation component, and the punctuation component includes a mounting seat (10) arranged on one side of the support frame (1), and an assembly groove (34) is provided on one side of the support frame (1). The mounting seat (10) is clamped in the inside of the assembly groove (34), and the other side of the mounting seat (10) is fixedly connected to a three-dimensional laser scanner (19) and a laser transmitter (20), respectively. The outer circumferential wall of the rebound detector (26) is provided with a laser receiver (27) that matches the laser transmitter (20).

2. The nondestructive testing device for the strength of a large-volume concrete component according to claim 1 is characterized in that: A transverse column (7) is fixedly connected to an outer wall of one side of the first shell (2), a fixing cylinder (13) is provided on the top of the support frame (1), and an end of the transverse column (7) away from the first shell (2) is inserted into the interior of the fixing cylinder (13).

3. The nondestructive testing device for the strength of a large-volume concrete component according to claim 2, characterized in that: The displacement assembly comprises a second shell (11) fixedly connected to one side of the support frame (1), a second motor (22) fixedly connected to the top outer wall of the second shell (11), a fourth threaded screw (56) fixedly connected to the output end of the second motor (22), a fourth threaded sleeve threadedly connected to the circumferential outer wall of the fourth threaded screw (56), a third shell (23) fixedly connected to one side of the fourth threaded sleeve, a second limiting groove (12) is provided on both sides of the second shell (11), two ends of the third shell (23) pass through the interior of the second limiting groove (12), a second guide column (61) fixedly connected to the interior of the second shell (11), and the circumferential outer wall of the second guide column (61) is fixedly connected to the second guide column (61). A first guide cylinder (57) is sleeved on the wall, and the first guide cylinder (57) is fixedly connected to the outer wall of one side of the third shell (23). The outer wall of one side of the third shell (23) is fixedly connected to the third motor (24). The output end of the third motor (24) is fixedly connected to a fifth threaded screw, and the circumferential outer wall of the fifth threaded screw is threadedly connected to a fifth threaded sleeve. One side of the fifth threaded sleeve is fixedly connected to a reinforcing column, and one end of the reinforcing column is connected to a fourth motor (58). A fourth limiting groove (59) is opened on one side of the third shell (23), and one end of the reinforcing column passes through the inside of the fourth limiting groove (59). The output end of the fourth motor (58) is fixedly connected to the outer wall of one side of the fixed disk (33).

4. The nondestructive testing device for the strength of a large-volume concrete component according to claim 3 is characterized in that: The output end of the fourth motor (58) is fixedly connected to a gear column (31), the circumferential outer wall of the gear column (31) is meshed with a gear plate (32), and the gear plate (32) is fixedly connected to the circumferential outer wall of the threaded rod (29).

5. The nondestructive testing device for the strength of a large-volume concrete component according to claim 4 is characterized in that: The circumferential outer wall of the second threaded screw (44) is fixedly connected to a driving wheel (42), the circumferential outer wall of the driving wheel (42) is transmission-connected to a transmission belt (48), the driving wheel (42) is transmission-connected to a driven wheel (47) via the transmission belt (48), the circumferential inner wall of the driven wheel (47) is fixedly connected to a third threaded screw (49), an outer wall of one side of the first housing (2) is fixedly connected to an L-shaped plate (35), and the circumferential outer wall of the third threaded screw (49) is threadedly connected to a third threaded sleeve (50).

6. The nondestructive testing device for the strength of a large-volume concrete component according to claim 5, characterized in that: A third limiting groove (51) is provided on one outer wall of the L-shaped plate (35), and a sliding rod is slidably connected inside the third limiting groove (51). One end of the sliding rod is fixedly connected to the outer wall of one side of the third threaded sleeve (50), and the other end of the sliding rod is fixedly connected to a slide plate (52), and one side of the slide plate (52) is in contact with the outer wall of one side of the L-shaped plate (35).

7. The nondestructive testing device for the strength of a large-volume concrete component according to claim 6, characterized in that: A baffle (55) is fixedly connected to an outer wall of one side of the third threaded sleeve (50), springs (54) distributed at equal distances are fixedly connected to an outer wall of one side of the baffle (55), and a movable plate (53) is fixedly connected to one end of the spring (54) away from the baffle (55).

8. The nondestructive testing device for the strength of a large-volume concrete component according to claim 7, characterized in that: One end of the rotating column (5) extending to the top of the first shell (2) is fixedly connected to a swing plate (3), and one end of the swing plate (3) away from the rotating column (5) is fixedly connected to a fixed column (4). The bottom end of the fixed column (4) is fixedly connected to a fixed frame (17), and the inner walls on both sides of the fixed frame (17) are rotatably connected to cleaning rollers (16) for cleaning the surface of the concrete body (21).

Images