A green and environment-friendly underground engineering concrete strength detection device

Abstract

The application relates to the field of material strength detection, and discloses a green and environment-friendly underground engineering concrete strength detection device, which belongs to the technical field of material mechanical property detection and comprises a moving assembly, a positioning assembly, a drilling assembly, a lifting assembly and a fixing assembly; the drilling assembly adopts a V-shaped frame and a gear transmission belt structure, can drive a drill rod to accurately drill a hole, guide a miniature ultrasonic probe into the interior of concrete, avoid interference such as soil covering, surface carbonization and uneven interface and the like, and obtain real strength data; the positioning assembly and the fixing assembly form multistage stable support, adapt to complex underground working conditions, and realize in-situ detection with micro damage, high precision and green environmental protection. The application solves the problems of low detection precision and large operation disturbance of underground concealed concrete structure strength detection, and is suitable for strength detection and quality monitoring of various underground engineering concrete members.

Description

Technical Field

[0001] This application relates to the field of material strength testing technology, and in particular to a green and environmentally friendly device for testing the strength of underground engineering concrete. Background Technology

[0002] As the core load-bearing and protective components of building engineering, the mechanical strength of underground concrete structures directly determines the overall stability, durability, and safe service life of the project. With the increasing depth and complexity of underground engineering, concrete structures are often covered by soil, backfill, and other media, making strength testing and mechanical performance evaluation a key challenge for project quality control and operation and maintenance monitoring. While damage detection offers high accuracy, it requires drilling, grooving, or core sampling of the concrete structure, which directly damages the integrity and mechanical properties of the components. Underground load-bearing components, in particular, are prone to stress concentration and leakage, making repairs complex and difficult to guarantee in terms of quality.

[0003] Current non-destructive testing technologies mainly include the rebound method, ultrasonic method, and a combination of ultrasonic and rebound methods. The rebound method relies on surface hardness to estimate strength, which is easily affected by carbonization and moisture content. When covering with soil, the surface layer needs to be removed, making the operation cumbersome and causing significant disturbance. Conventional ultrasonic methods have high requirements for interface flatness and coupling conditions. Soil encapsulation can cause sound wave attenuation and scattering, making it impossible to obtain true internal sound velocity and strength data. Although the combined ultrasonic and rebound method has made some improvements, it still cannot solve the problem of effective contact and accurate detection in concealed environments, making it difficult to meet the needs of in-situ strength testing of underground concrete structures. Summary of the Invention

[0004] This application proposes a green and environmentally friendly concrete strength testing device for underground engineering, which has the advantages of high-precision in-situ measurement, minimally destructive and environmentally friendly operation, and adaptive multiple stabilization. It is used to solve the problems of low detection accuracy and poor reliability caused by soil cover and surface condition in traditional non-destructive testing methods, as well as the permanent damage to structural integrity and safety caused by traditional core sampling and other destructive testing methods.

[0005] To achieve the above objectives, this application adopts the following technical solution: a green and environmentally friendly underground engineering concrete strength testing device, including a mobile component, a positioning component fixedly installed on the left side of the mobile component, and a linkage rotary drilling detection mechanism, which includes a drilling component, the drilling component being rotatably installed on the top of the mobile component, a lifting component fixedly installed on the right side of the drilling component, and a fixing component installed inside the lifting component. The drilling assembly includes a V-shaped block, which consists of two sets of longitudinal plates arranged in a V-shape. Each set of longitudinal plates has two gears rotatably mounted inside. The outer edges of the two gears are fitted with transmission belts, and the outer edges of the two transmission belts are fixedly connected to movable blocks. A first motor is fixedly connected to the outer side of the movable block on the back side. The output shaft of the first motor is connected to a universal joint. A drill rod is fixedly connected to the bottom of the universal joint. A guide block is movably fitted to the outer edge of the drill rod. A detector is fixedly mounted on the outer wall of the movable block on the front side.

[0006] Preferably, a rotary motor is fixedly installed at the bottom of the V-block, an electric motor is installed inside each of the two gears, the transmission belt has multiple tooth grooves, the gears can mesh with the tooth grooves, the two movable blocks are movably engaged with the inner wall of the longitudinal plate, and the other end of the guide block is fixedly connected to the inner wall of the two longitudinal plates.

[0007] Preferably, the moving component includes a fixed block, two rotating shafts are fixedly installed at the bottom of the fixed block, two tracks are sleeved on the outer edges of the two rotating shafts, an arc-shaped groove is provided on the top left side of the fixed block, and a load-bearing block is fixedly installed on the right side of the arc-shaped groove.

[0008] Preferably, the rotary motor at the bottom of the V-shaped block is fixedly connected to the bottom surface of the arc-shaped groove, and electric motors are installed inside the two rotating shafts, which can drive the tracks to rotate at the same speed or asynchronously.

[0009] Preferably, the positioning component includes two connecting rods, the right ends of the two connecting rods are fixedly installed on the front and rear sides of the fixing block, the other ends of the two connecting rods are fixedly connected to hydraulic rods, the telescopic ends of the two hydraulic rods are fixedly connected to arc-shaped strips, the inner wall of the arc-shaped strips is provided with multiple grooves in a circular array, and the bottom of the arc-shaped strips is fixedly installed with multiple first ground nails.

[0010] Preferably, the arc-shaped strip is provided with a heating wire inside, which can heat the entire arc-shaped strip. The edges of the multiple grooves are arc-shaped, and the multiple first ground nails are fixedly installed at equal intervals in a ring at the bottom of the arc-shaped strip.

[0011] Preferably, the lifting assembly includes two tracks, which are fixedly installed on the right side of the fixed block. Lifting blocks are movably installed in both tracks, and electric wheels are installed in the lifting blocks. The electric wheels abut against the inner wall of the tracks. Curved rods are fixedly connected to the outer sides of the two lifting blocks, and round shells are fixedly connected to the tail ends of the two curved rods.

[0012] Preferably, the fixing component includes a triangular plate, which is fixedly connected to the inner wall of the circular shell. A second motor is fixedly installed in the middle of the triangular plate, and the output shaft of the second motor is connected to a rotating plate. The top of the rotating plate has three sets of guide grooves arranged in a ring. A fixing plate is installed at the bottom of the rotating plate, and three positioning posts in a ring array are fixedly installed on the top of the fixing plate. The three positioning posts are respectively engaged in three different guide grooves.

[0013] Preferably, each of the other three guide slots is movably engaged with a T-shaped sleeve, each of the three T-shaped sleeves is movably installed with a long strip, and the other end of each of the three long strips is installed with a second grounding nail.

[0014] Preferably, the outer edge of the fixing plate is fixedly connected to the inner wall of the circular shell, and there is a space between the rotating plate and the fixing plate that can accommodate the T-shaped sleeve.

[0015] The beneficial effects of this invention are as follows: 1. This invention utilizes a newly designed drilling assembly. The V-shaped block's bottom rotating motor adjusts the angle, ensuring the drill rod is precisely aligned with the detection point. The first motor drives the drill rod to rotate via a universal joint, which, in conjunction with gears and a transmission belt, drives the movable block to feed smoothly. The guide block ensures the drill rod drills in a straight line without deviation. After drilling is completed, the same transmission system is used to send a miniature ultrasonic detector into the hole, directly conducting strength and mechanical property testing inside the concrete. This avoids interference from external soil, surface carbonization, and interface unevenness, obtaining accurate internal strength data and significantly improving testing accuracy and reliability.

[0016] 2. The present invention uses a fixed component, with the second motor driving the rotating plate to rotate, causing the T-shaped sleeve to extend radially and push the second ground nail to expand and anchor into the soil, forming a stable ground anchor structure. This provides solid support for the device in high-precision strength testing operations and avoids vibration and displacement.

[0017] 3. The present invention can adapt to the complex and rugged working conditions of underground engineering by using the moving component and the positioning component together; after the track moves into place, the hydraulically driven arc strip and the first ground nail form a foundation anchor to prevent the device from shifting during drilling and testing; the arc strip is equipped with a heating wire, which can reduce the interference of soil moisture content and further ensure the stability and accuracy of strength testing. Attached Figure Description

[0018] The accompanying drawings, which form part of this specification, illustrate embodiments disclosed in this application and, together with the specification, serve to explain the principles of this application in a clear and understandable manner.

[0019] This disclosure will become clearer with reference to the accompanying drawings and the following detailed description, wherein: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a bottom view of the overall structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 4 For the present invention Figure 2 Enlarged schematic diagram of the structure at point B; Figure 5 This is a schematic diagram of the structure of the mobile component of the present invention; Figure 6 This is a schematic diagram of the positioning component structure of the present invention; Figure 7 This is a schematic diagram of the drilling assembly structure of the present invention; Figure 8 This is a schematic diagram of the fixed component structure of the present invention.

[0020] The components are as follows: 1. Moving component; 2. Positioning component; 3. Drilling component; 4. Lifting component; 5. Fixing component; 11. Fixing block; 12. Rotating shaft; 13. Track; 14. Arc groove; 15. Load-bearing block; 21. Connecting rod; 22. Hydraulic rod; 23. Arc strip; 24. Groove; 25. First ground spike; 31. V-block; 32. Gear; 33. Transmission belt; 34. Moving block; 35. First motor; 36. Universal joint; 37. Drill rod; 38. Guide block; 39. Detector; 41. Track; 42. Lifting block; 43. Bent rod; 44. Round shell; 51. Triangular plate; 52. Second motor; 53. Rotary plate; 54. Guide groove; 55. Fixing plate; 56. Positioning post; 57. Sleeve; 58. Long strip; 59. Second ground spike. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0022] Please see Figure 1-8 The green and environmentally friendly underground engineering concrete strength testing device of this embodiment includes a moving component 1, a positioning component 2 fixedly installed on the left side of the moving component 1, and a linkage rotary drilling detection mechanism, which includes a drilling component 3, the drilling component 3 is rotatably installed on the top of the moving component 1, a lifting component 4 is fixedly installed on the right side of the drilling component 3, and a fixing component 5 is installed inside the lifting component 4. The drilling assembly 3 includes a V-block 31, which consists of two sets of longitudinal plates arranged in a V-shape. Each set of longitudinal plates has two gears 32 rotatably mounted inside. The outer edges of the two gears 32 are sleeved with a transmission belt 33. The outer edges of the two transmission belts 33 are fixedly connected to movable blocks 34. The outer side of the back movable block 34 is fixedly connected to a first motor 35. The output shaft of the first motor 35 is connected to a universal joint 36. The bottom of the universal joint 36 is fixedly connected to a drill rod 37. The outer edge of the drill rod 37 is movably sleeved with a guide block 38. The outer wall of the front movable block 34 is fixedly mounted with a detector 39. The bottom of the V-block 31 is fixedly mounted with a rotary motor. The two gears 32 are each equipped with an electric motor. The transmission belt 33 has multiple tooth grooves. The gears 32 can mesh with the tooth grooves. The two movable blocks 34 are movably engaged with the inner wall of the longitudinal plates. The other end of the guide block 38 is fixedly connected to the inner wall of the two longitudinal plates. The rotary motor at the bottom of the V-block 31 starts, which can drive the entire V-frame to adjust the angle so that the drill rod 37 can be accurately aligned with the preset detection point. The first motor 35 starts and transmits torque to the drill rod 37 through the universal joint 36, driving the drill bit to rotate. At the same time, the electric motor of the gear 32 inside the V-block 31 works. Through the meshing of the gear 32 with the tooth groove on the transmission belt 33, the movable block 34 is driven to move downward along the inner wall of the V-block 31, thereby pushing the drill rod 37 forward smoothly. The guide block 38 can ensure that the drill rod 37 maintains a straight line during drilling and prevents deviation. After the drill rod 37 completes drilling and withdraws, the same transmission system is immediately used for detection. The detector 39 is a miniature ultrasonic probe and is mounted on the movable block 34 on the front side. When the transmission system is restarted, the detector 39 can be accurately sent into the concrete structure through the drilled hole. The detector 39 can directly detect inside the concrete, avoiding interference from the external soil covering and the influence of surface carbonization, unevenness and other factors. This allows the acquisition of data reflecting the true strength inside the concrete, greatly improving the detection accuracy.

[0023] The moving component 1 includes a fixed block 11, with two rotating shafts 12 fixedly installed at the bottom of the fixed block 11. Two tracks 13 are sleeved on the outer edges of the two rotating shafts 12. An arc-shaped groove 14 is opened on the top left side of the fixed block 11, and a load-bearing block 15 is fixedly installed on the right side of the arc-shaped groove 14. An electric motor is installed inside the two rotating shafts 12, which can drive the tracks 13 to rotate at the same speed or asynchronously. The positioning component 2 includes two connecting rods 21. The right ends of the two connecting rods 21 are fixedly installed on the front and rear sides of the fixed block 11. The other ends of the two connecting rods 21 are fixedly connected to hydraulic rods 22. The telescopic ends of the two hydraulic rods 22 are fixedly connected to arc-shaped strips 23. Multiple grooves 24 are arranged in a ring array on the inner wall of the arc-shaped strips 23. Multiple first ground spikes 25 are fixedly installed at the bottom of the arc-shaped strips 23. A heating wire is provided inside the arc-shaped strips 23, which can heat the entire arc-shaped strips 23. The edges of the multiple grooves 24 are arc-shaped, and the multiple first ground spikes 25 are fixedly installed in a ring at equal intervals at the bottom of the arc-shaped strips 23. The device is driven by a built-in electric motor to rotate the shaft 12 and move the track 13, enabling it to adapt to the uneven ground that may exist in underground engineering and move to the vicinity of the concrete structure to be inspected.

[0024] The lifting assembly 4 includes two rails 41, which are fixedly installed on the right side of the fixed block 11. Lifting blocks 42 are movably installed in both rails 41. Electric wheels are installed in the lifting blocks 42, and the electric wheels abut against the inner wall of the rails 41. Bending rods 43 are fixedly connected to the outer sides of the two lifting blocks 42, and round shells 44 are fixedly connected to the tail ends of the two bending rods 43. For tests requiring additional stability, the lifting assembly 4 and the fixing assembly 5 can provide auxiliary support. The lifting assembly 4 lowers the cylindrical shell 44 and the internal fixing assembly 5 to a position close to the ground via the electric wheels in the rail 41 and the lifting block 42.

[0025] The fixing component 5 includes a triangular plate 51, which is fixedly connected to the inner wall of the circular shell 44. A second motor 52 is fixedly installed in the middle of the triangular plate 51. The output shaft of the second motor 52 is connected to a rotating plate 53. The top of the rotating plate 53 has three sets of guide grooves 54 arranged in a ring. A fixing plate 55 is installed at the bottom of the rotating plate 53. Three positioning posts 56 in a ring array are fixedly installed on the top of the fixing plate 55. The three positioning posts 56 are respectively engaged in three different guide grooves 54. T-shaped sleeves 57 are movably engaged in the three guide grooves 54. Long strips 58 are movably installed in the three T-shaped sleeves 57. The other end of the three long strips 58 is equipped with a second ground nail 59. The outer edge of the fixing plate 55 is fixedly connected to the inner wall of the circular shell 44. There is a space between the rotating plate 53 and the fixing plate 55 to accommodate the T-shaped sleeves 57. By starting the second motor 52, the rotating plate 53 is driven to rotate. The guide groove 54 on the rotating plate 53 moves relative to the positioning post 56. Since the fixed plate 55 is fixed, this relative movement forces the T-shaped sleeve 57 to extend outward radially along the guide groove 54. The outwardly extending T-shaped sleeve 57 pushes the long strip 58 and the second ground nail 59 inside it to be driven into the surrounding soil vertically and in an expanding manner, forming a ground anchor system, which provides stability for the entire device during long-term or high-precision testing.

[0026] Working principle: When using this equipment, the built-in electric motor first drives the rotating shaft 12 to move the track 13, so that the device can adapt to the rugged and uneven ground that may exist in underground engineering and move to the vicinity of the concrete structure to be inspected. Once the device has moved to the approximate area, the hydraulic rod 22 extends and pushes the arc-shaped strip 23 against the soil or rock wall of the detection area. At this time, the first ground nail 25 is driven into the ground under hydraulic pressure, forming a stable support anchor point together with the arc-shaped strip 23 to prevent the device from moving or vibrating during subsequent drilling and detection. Meanwhile, the heating wire can heat the moist soil, reducing the interference of soil moisture on the detection rod. After the preparation work is completed, the rotary motor at the bottom of the V-block 31 starts, driving the entire V-frame to adjust the angle so that the drill rod 37 can be accurately aligned with the preset detection point. Then the first motor 35 starts, transmitting torque to the drill rod 37 through the universal joint 36, driving the drill bit to rotate. At the same time, the electric motor of the gear 32 inside the V-block 31 works. Through the meshing of the gear 32 with the tooth groove on the transmission belt 33, the movable block 34 is driven to move downward along the inner wall of the V-block 31, thereby pushing the drill rod 37 forward smoothly. The guide block 38 can ensure that the drill rod 37 maintains a straight movement during drilling and prevents deviation. After the drill rod 37 finishes drilling and is withdrawn, the same transmission system is immediately used for detection. The detector 39 is a miniature ultrasonic probe and is installed on the movable block 34 on the front side. When the transmission system is restarted, the detector 39 can be accurately sent into the concrete structure through the drilled hole. The detector 39 can directly detect inside the concrete, avoiding the interference of the external covering soil and the influence of surface carbonization, unevenness and other factors. This allows the acquisition of data that reflects the true strength inside the concrete, greatly improving the detection accuracy. For tests requiring additional stability, the lifting assembly 4 and the fixing assembly 5 can provide auxiliary support. The lifting assembly 4 lowers the cylindrical shell 44 and the internal fixing assembly 5 to a position close to the ground via the electric wheels in the rail 41 and the lifting block 42. The second motor 52 starts, driving the rotating plate 53 to rotate. The guide groove 54 on the rotating plate 53 moves relative to the positioning post 56. Since the fixed plate 55 is fixed, this relative movement forces the T-shaped sleeve 57 to extend outward radially along the guide groove 54. The outwardly extending T-shaped sleeve 57 pushes the long strip 58 and the second ground nail 59 inside it to be driven into the surrounding soil vertically and in an expanding manner, forming a ground anchor system, which provides stability for the entire device during long-term or high-precision testing.

[0027] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A green and environmentally friendly underground engineering concrete strength testing device, comprising a mobile component (1), characterized in that, A positioning component (2) is fixedly installed on the left side of the moving component (1), and also includes, The linkage rotary drilling detection mechanism includes a drilling component (3), which is rotatably mounted on the top of the moving component (1). A lifting component (4) is fixedly mounted on the right side of the drilling component (3), and a fixing component (5) is installed inside the lifting component (4). The drilling assembly (3) includes a V-shaped block (31), which is composed of two sets of longitudinal plates arranged in a V-shape. Each set of longitudinal plates has two gears (32) rotatably installed inside. The outer edges of the two gears (32) are sleeved with a transmission belt (33). The outer edges of the two transmission belts (33) are fixedly connected with movable blocks (34). The outer side of the movable block (34) on the back is fixedly connected with a first motor (35). The output shaft of the first motor (35) is connected with a universal joint (36). The bottom of the universal joint (36) is fixedly connected with a drill rod (37). The outer edge of the drill rod (37) is movably sleeved with a guide block (38). The outer wall of the movable block (34) on the front is fixedly installed with a detector (39).

2. The green and environmentally friendly underground engineering concrete strength testing device according to claim 1, characterized in that, A rotary motor is fixedly installed at the bottom of the V-shaped block (31), and an electric motor is installed inside each of the two gears (32). The transmission belt (33) has multiple tooth grooves, and the gears (32) can mesh with the tooth grooves. The two movable blocks (34) are movably engaged with the inner wall of the longitudinal plate, and the other end of the guide block (38) is fixedly connected to the inner wall of the two longitudinal plates.

3. The green and environmentally friendly underground engineering concrete strength testing device according to claim 2, characterized in that, The moving component (1) includes a fixed block (11), two rotating shafts (12) are fixedly installed at the bottom of the fixed block (11), two tracks (13) are sleeved on the outer edges of the two rotating shafts (12), an arc groove (14) is opened on the top left side of the fixed block (11), and a load block (15) is fixedly installed on the right side of the arc groove (14).

4. The green and environmentally friendly underground engineering concrete strength testing device according to claim 3, characterized in that, The rotary motor at the bottom of the V-shaped block (31) is fixedly connected to the bottom surface of the arc groove (14). The two rotating shafts (12) are equipped with electric motors that can drive the track (13) to rotate at the same speed or asynchronously.

5. The green and environmentally friendly underground engineering concrete strength testing device according to claim 4, characterized in that, The positioning component (2) includes two connecting rods (21). The right ends of the two connecting rods (21) are fixedly installed on the front and rear sides of the fixing block (11). The other ends of the two connecting rods (21) are fixedly connected to hydraulic rods (22). The telescopic ends of the two hydraulic rods (22) are fixedly connected to arc-shaped strips (23). The inner wall of the arc-shaped strips (23) is provided with a plurality of grooves (24) in an annular array. The bottom of the arc-shaped strips (23) is fixedly installed with a plurality of first ground nails (25).

6. The green and environmentally friendly underground engineering concrete strength testing device according to claim 5, characterized in that, The arc-shaped strip (23) is equipped with a heating wire inside, which can heat the entire arc-shaped strip (23). The edges of the multiple grooves (24) are arc-shaped, and multiple first ground nails (25) are fixedly installed at equal intervals in a ring at the bottom of the arc-shaped strip (23).

7. The green and environmentally friendly underground engineering concrete strength testing device according to claim 6, characterized in that, The lifting assembly (4) includes two tracks (41), which are fixedly installed on the right side of the fixed block (11). Lifting blocks (42) are movably installed in both tracks (41). Electric wheels are installed in the lifting blocks (42), and the electric wheels abut against the inner wall of the track (41). Bending rods (43) are fixedly connected to the outer sides of the two lifting blocks (42), and round shells (44) are fixedly connected to the tail ends of the two bending rods (43).

8. The green and environmentally friendly underground engineering concrete strength testing device according to claim 7, characterized in that, The fixing component (5) includes a triangular plate (51), which is fixedly connected to the inner wall of the circular shell (44). A second motor (52) is fixedly installed in the middle of the triangular plate (51). The output shaft of the second motor (52) is connected to a rotating plate (53). The top of the rotating plate (53) is provided with three sets of guide grooves (54), which are arranged in a ring. A fixing plate (55) is installed at the bottom of the rotating plate (53). Three positioning posts (56) in a ring array are fixedly installed on the top of the fixing plate (55). The three positioning posts (56) are respectively engaged in three different guide grooves (54).

9. The green and environmentally friendly underground engineering concrete strength testing device according to claim 8, characterized in that, The other three guide slots (54) are each movably engaged with a T-shaped sleeve (57), and each of the three T-shaped sleeves (57) is movably installed with a long strip (58). The other end of each of the three long strips (58) is installed with a second ground nail (59).

10. The green and environmentally friendly underground engineering concrete strength testing device according to claim 9, characterized in that, The outer edge of the fixing plate (55) is fixedly connected to the inner wall of the round shell (44), and there is a space between the rotating plate (53) and the fixing plate (55) that can accommodate the T-shaped sleeve (57).

Images