Concrete micro-crack detection system

Abstract

The invention relates to the technical field of building material quality detection, and provides a concrete micro-crack detection system which comprises a moving seat, a lifter and a detector, the lifter is installed on the moving seat, a lifting seat is installed on a lifting arm of the lifter, the lifting seat is provided with a guide ring, the guide ring is arranged on the peripheral side of a column body in a sleeving mode, and the detector is arranged on the guide ring. The detector is rotationally mounted on the guide ring so as to rotate around the central axis of the guide ring; and a rotating assembly is arranged between the lifting seat and the moving seat and is used for forcing the detector to intermittently rotate around the central axis of the guide ring. According to the concrete micro-crack detection system, the micro-crack detection efficiency of the column body can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of building material quality detection, and in particular to a concrete micro-crack detection system. Background Art

[0002] With the acceleration of urbanization and the increasing number of large-scale infrastructure projects, the safety and durability of buildings have become a major concern. Concrete, as one of the most important building materials, may develop microcracks during long-term service. These microcracks are difficult to detect initially, but can gradually expand over time, leading to structural degradation and even accidents. Therefore, concrete microcrack detection is crucial for ensuring building safety.

[0003] Commonly used methods for detecting concrete microcracks on the market include acoustic wave detection, electromagnetic detection, infrared thermal imaging, and optical detection. Acoustic wave detection, by transmitting an acoustic wave signal into the concrete and determining the presence of cracks based on the time difference between the echoes, can accurately identify tiny cracks in concrete. For tall columns, an acoustic wave detector (hereinafter referred to as the detector) is typically mounted on the lifting arm of an aluminum alloy lift (hereinafter referred to as the lift). The lift then raises and lowers the detector, allowing it to detect concrete microcracks at different heights within the column.

[0004] However, while this type of system can detect microcracks in columns at a certain height, it requires frequent adjustments to the position of the lift to fully inspect the entire column. This not only increases the operator's workload but also significantly reduces detection efficiency. Therefore, improving the efficiency of microcrack detection in columns and reducing the operator's workload has become a pressing technical challenge. Summary of the Invention

[0005] In order to improve the efficiency of micro-crack detection on columns, the present application provides a concrete micro-crack detection system.

[0006] The concrete microcrack detection system provided in this application adopts the following technical solutions: A concrete microcrack detection system includes a moving seat, an elevator, and a detector. The elevator is installed on the moving seat, and the lifting seat is installed on the lifting arm of the elevator. The lifting seat is provided with a guide ring, which is sleeved on the outer circumference of a column. The detector is rotatably mounted on the guide ring so as to be able to rotate around the central axis of the guide ring; a rotating assembly is provided between the lifting seat and the moving seat, and the rotating assembly is used to force the detector to intermittently rotate around the central axis of the guide ring.

[0007] By adopting the above technical solution, when performing micro-crack detection on a column, the detector is first transferred to the site via the mobile seat, and the guide ring is placed on the outer peripheral side of the column. Then, the lifting seat is driven by the elevator to lift and the detector is turned on, so that the detector can detect micro-cracks on the column in the height direction. After the detector moves to the top of the column, the lifting seat is driven down by the elevator. When the detector moves down to the low position, the detector is driven to rotate a certain angle around the central axis of the guide ring by the rotating component, and then the lifting seat is driven to lift again, so that the detector can change its orientation and perform height-direction detection on the column again; this is repeated so that the detector can surround the column, realize comprehensive concrete micro-crack detection on the column, improve the efficiency of micro-crack detection on the column, and reduce the workload of the operator.

[0008] Optionally, a rotating ring is coaxially provided on the guide ring, the rotating ring is rotatably connected to the guide ring, the detector is provided on the rotating ring, and the detector is rotatably mounted on the guide ring through the rotating ring; the rotating assembly includes a rotating disk, a rocker arm, a push rod and a linkage member, the rotating disk is rotatably mounted on the lifting seat, the outer peripheral wall of the rotating disk is provided with a plurality of push grooves, and the plurality of push grooves are spaced around the central axis of the rotating disk; one end of the rocker arm is hinged to the lifting seat, a tension spring is provided between the rocker arm and the lifting seat, and the tension spring forces the rocker arm to rotate to a horizontal state; a push block is hinged to the side wall of the rocker arm, a torsion spring is provided between the push block and the rocker arm, and the torsion spring forces the push block to engage with the push groove of the rotating disk, and when the rocker arm swings, the push block forces the rotating disk to rotate; one end of the push rod is connected to the moving seat, and when the elevator forces the guide ring to descend to the lowest position, the push rod pushes the rocker arm to swing; the linkage member is provided between the rotating disk and the rotating ring to drive the rotating disk and the rotating ring to rotate synchronously.

[0009] By adopting the above technical solution, when the elevator drives the detector to a low position, the push rod pushes the rocker arm, forcing the rocker arm to rotate upward by a certain angle. The rocker arm can then force the rotating disk to rotate by a certain angle through the push block. Under the action of the linkage, the rotating ring can synchronously rotate by a certain angle with the rotating disk to adjust the detector's orientation. After the detector's orientation is adjusted, the elevator drives the lifting seat to rise. After the rocker arm disengages the push rod, it swings back to its original position under the action of the tension spring, causing the push block to move to the next push slot of the rotating disk. This allows the elevator seat to continue to push the rotating disk to rotate when it descends again, achieving intermittent rotation of the detector around the central axis of the guide ring, greatly improving the operational convenience of the overall structure.

[0010] Optionally, the lifting seat is respectively rotatably mounted with a first rotating rod and a second rotating rod, the rotating disk is coaxially arranged on the first rotating rod, and the rotating disk is rotatably mounted on the lifting seat through the first rotating rod; the linkage member includes a rotating ring gear, a rotating gear, a first bevel gear and a second bevel gear, the rotating ring gear is coaxially arranged on the outer peripheral wall of the rotating ring, the rotating gear is coaxially arranged on the outer peripheral wall of the second rotating rod, and the rotating ring gear and the rotating gear are meshed for transmission; the first bevel gear is coaxially arranged on the outer peripheral wall of the first rotating rod, the second bevel gear is coaxially arranged on the outer peripheral wall of the second rotating rod, and the first bevel gear and the second bevel gear are meshed for transmission.

[0011] By adopting the above technical solution, the arrangement of the rotating ring gear, rotating gear, first bevel gear, and second bevel gear achieves synchronized rotation of the rotating disk and rotating ring. Specifically, when the push rod pushes the rocker arm to swing, the push block forces the rotating disk to rotate, which in turn drives the first rotating rod. Due to the meshing transmission between the first bevel gear and the second bevel gear, the second rotating rod also rotates. The rotating gear and the rotating ring gear also mesh, ultimately driving the rotating ring to rotate along with the rotating disk.

[0012] Optionally, a sliding plate is provided at the bottom of the detector, which is slidably connected to the rotating ring and can be displaced radially along the rotating ring; the sliding plate is connected to a positioning rod, and a positioning spring is provided between the sliding plate and the rotating ring, and the positioning spring forces the sliding plate to displace toward the center of the rotating ring and forces the positioning rod to abut against the outer wall of the column.

[0013] By adopting the above-mentioned technical solution, through the setting of the positioning rod and the positioning spring, the sliding plate is displaced toward the center of the rotating ring under the action of the positioning spring, forcing the positioning rod to abut against the outer peripheral wall of the column to control the distance between the detector and the column. When the detector rotates around the central axis of the rotating ring, under the action of the positioning spring, the mounting seat can automatically adjust its position so that the distance between the detector and the column remains unchanged, that is, the distance between the detector and the column before rotation and the distance between the detector and the column after rotation always remain the same, thereby improving the detection accuracy. In other words, the effect that can be achieved by the setting of the positioning rod and the positioning spring is that when the guide ring is arranged on the outer peripheral side of the column, there is no need to maintain a high coaxiality between the guide ring and the column, thereby improving the operational convenience of the overall structure.

[0014] Optionally, the sliding plate is provided with an adjustment sleeve, and one end of the positioning rod away from the column is passed through the adjustment sleeve; the adjustment sleeve is provided with an adjustment component, and the adjustment component is used to adjust the distance between the sliding plate and the column.

[0015] By adopting this technical solution, the spacing between the sliding plate and the column can be flexibly adjusted. Specifically, the adjustment assembly enables the positioning rod to slide within the adjustment sleeve, thereby changing the position of the sliding plate relative to the column. This not only improves the adaptability of the detector, enabling it to be used with columns of varying diameters and shapes, but also ensures the detector's stability and accuracy under various operating conditions, further enhancing the overall ease of operation.

[0016] Optionally, the outer wall of the positioning rod is provided with a plurality of snap ring grooves, and the plurality of snap ring grooves are arranged at intervals along the length direction of the positioning rod; the adjustment component includes a limit sleeve, a limit ball and a compression spring, the limit sleeve sliding sleeve is provided on the outer wall of the adjustment sleeve, the outer wall of the adjustment sleeve is provided with an embedding groove, and the limit ball is embedded in the embedding groove; the compression spring is provided between the adjustment sleeve and the limit sleeve, the compression spring forces the limit sleeve to cover the embedding groove, and when the limit sleeve covers the embedding groove, the limit sleeve pushes the limit ball to partially embed into the snap ring groove.

[0017] By adopting the above technical solution, under the action of the compression spring, the limit sleeve normally covers the embedding groove and pushes the limit ball to partially embed into the clamping ring groove to limit the sliding of the positioning rod. When it is necessary to adjust the distance between the detector and the column, the limit sleeve is pulled to force the limit sleeve out of the embedding groove, releasing the limiting effect on the limit ball. At this time, the positioning rod can be pulled to slide to adjust the distance between the detector and the column. After the distance adjustment is completed, the limit sleeve is released. The limit sleeve, under the action of the compression spring, re-covers the embedding groove, thereby forcing the limit ball to remain embedded in the current clamping ring groove, improving the convenience of adjustment.

[0018] Optionally, the lifting seat includes a lifting main rib and two lifting secondary ribs, the lifting main rib is connected to the lifting arm of the elevator, and the two lifting secondary ribs are slidably installed on the lifting main rib, and the lifting main rib is provided with a driving component for driving the two lifting secondary ribs to approach or move away from each other; the guide ring includes two guide arc bars, and the two guide arc bars are correspondingly arranged with the two lifting secondary ribs, and each guide arc bar is installed on the corresponding lifting secondary rib; a rotating arc groove is provided on the surface of each guide arc bar, and the rotating ring includes two rotating arc bars, and the two rotating arc bars are correspondingly arranged with the two guide arc bars, and each rotating arc bar is slidably installed in the rotating arc groove of the corresponding guide arc bar; when the two lifting secondary ribs approach each other, the two guide arc bars are combined to form the annular guide ring, and the two rotating arc bars are combined to form the annular rotating ring.

[0019] By adopting the above-mentioned technical solution, the guide ring is composed of two guide arc bars, and the rotating ring is composed of two rotating arc bars, so that the guide ring and the rotating ring can be sleeved on the outer peripheral side of the column; before inspecting the column, the two lifting auxiliary ribs are driven away from each other by the driving component to expand the distance between the two guide arc bars, and then the lifting main ribs are driven to move by the moving seat, and the two guide arc bars are driven to move to the outside of the column, and the two lifting auxiliary ribs are driven close to each other by the driving component, so that the two guide arc bars form a guide ring sleeved on the outer peripheral side of the column. After the guide ring is formed, the two rotating arc bars form a rotating ring, which improves the installation convenience of the overall structure.

[0020] Optionally, the driving assembly includes a driving block, a driving screw and a driving member, the lifting main rib is provided with a sliding groove, two driving blocks are provided and both driving blocks are slidably installed in the sliding groove, the two driving blocks are correspondingly arranged with two lifting secondary ribs, each of the lifting secondary ribs is installed in the corresponding driving block, and the lifting secondary ribs are slidably installed on the lifting main rib through the driving block; the two ends of the driving screw are rotatably installed on the inner wall of the sliding groove, the driving screw is passed through the two driving blocks, the driving screw and the two driving blocks are threadedly connected, and the thread rotation direction between the driving screw and the two driving blocks is set to be opposite; the driving member is arranged on the lifting main rib to drive the driving screw to rotate.

[0021] By adopting the above-mentioned technical solution, when the two guide arcs are displaced to the outside of the column, the driving screw is driven to rotate by the driving member, and the thread rotation direction between the driving screw and the two driving blocks is set to be opposite, thereby forcing the two lifting auxiliary ribs to approach each other, so that the two guide arcs form a guide ring; after the inspection of the column is completed, the driving screw is forced to reverse, which can drive the two lifting auxiliary ribs away from each other, thereby improving the convenience of disassembly and assembly of the guide ring.

[0022] Optionally, the driving member includes a push rod, a driving gear, a driving rack and a return spring. The push rod is slidably installed on the lifting main rib, and one end of the push rod is used to abut the outer peripheral wall of the column; the driving gear is coaxially arranged on the outer peripheral wall of the driving screw, and the driving rack is installed on the push rod. The length direction of the driving rack is consistent with the displacement direction of the push rod, and the driving rack and the driving gear are engaged for transmission; the return spring is installed between the push rod and the lifting main rib, and the return spring forces the two driving blocks to move away from each other.

[0023] By adopting the above-mentioned technical solution, under normal conditions, the reset spring forces the two drive blocks away from each other, thereby separating the two guide arcs to allow the column to enter. The movable seat drives the main lifting rib to move, forcing the column to move between the two guide arcs. During this process, the outer wall of the column blocks the push rod. As the movable seat continues to move, meshing transmission occurs between the drive gear and the drive rack, thereby driving the drive screw to rotate and forcing the two lifting secondary ribs to approach each other, so that the two guide arcs are combined to form a guide ring that is sleeved on the column. After the inspection is completed, the movable seat is driven away from the column. The push rod, under the action of the reset spring, forces the drive screw to reverse, thereby driving the two lifting secondary ribs away from each other, greatly improving the convenience of disassembly and assembly of the guide ring.

[0024] Optionally, a third rotating rod is provided at one end of the lifting secondary rib, and the third rotating rod is rotatably installed on the corresponding driving block, and one end of the lifting secondary rib is rotatably connected to the corresponding driving block through the third rotating rod; the lifting main rib is provided with a flipping assembly, and when the two driving blocks move away from each other, the flipping assembly forces the lifting secondary rib to swing around the third rotating rod, and the distance between the free ends of the two lifting secondary ribs is expanded.

[0025] By adopting the above-mentioned technical solution, through the setting of the third rotating rod and the flip assembly, when the two driving blocks move away from each other, the flip assembly forces the lifting auxiliary ribs to swing, and the distance between the free ends of the two lifting auxiliary ribs is expanded, so that the column can move out from between the two guide arcs. By rotating the lifting auxiliary ribs, the movement of the lifting auxiliary ribs is reduced, thereby reducing the manufacturing length of the driving screw.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. Through the setting of the guide ring and the rotating assembly, when performing micro-crack detection on the column, first transfer the detector to the site through the mobile seat, and set the guide ring on the outer peripheral side of the column. Then, use the elevator to drive the lifting seat to lift and turn on the detector, so that the detector can detect micro-cracks in the column along the height direction. After the detector moves to the top of the column, the lifting seat is driven down by the elevator. When the detector moves to the low position, the rotating assembly drives the detector to rotate a certain angle around the central axis of the guide ring. Then, the lifting seat is driven to lift again, so that the detector can change its orientation and detect the column in the height direction again; this is repeated so that the detector can surround the column, realize comprehensive concrete micro-crack detection on the column, improve the efficiency of micro-crack detection on the column, and reduce the workload of operators; 2. Through the setting of the positioning rod and the positioning spring, the sliding plate is displaced toward the center of the rotating ring under the action of the positioning spring, forcing the positioning rod to abut against the outer peripheral wall of the column to control the distance between the detector and the column. When the detector rotates around the central axis of the rotating ring, under the action of the positioning spring, the mounting seat can automatically adjust its position so that the distance between the detector and the column remains unchanged, that is, the distance between the detector and the column before rotation and the distance between the detector and the column after rotation always remain the same, thereby improving the detection accuracy. In other words, the setting of the positioning rod and the positioning spring can achieve the effect that when the guide ring is arranged on the outer peripheral side of the column, there is no need to maintain a high coaxiality between the guide ring and the column, thereby improving the operational convenience of the overall structure; 3. Through the arrangement of the limit sleeve, limit ball, and compression spring, the limit sleeve normally covers the mounting groove under the action of the compression spring, and pushes the limit ball to partially embed into the snap ring groove to limit the slippage of the positioning rod. When it is necessary to adjust the distance between the detector and the column, pull the limit sleeve to force the limit sleeve out of the mounting groove, releasing the limiting effect on the limit ball. At this time, the positioning rod can be pulled to slide to adjust the distance between the detector and the column. After the distance adjustment is completed, release the limit sleeve. The limit sleeve re-covers the mounting groove under the action of the compression spring, thereby forcing the limit ball to remain embedded in the current snap ring groove, improving the convenience of adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of Example 1; Figure 2 is a partial cross-sectional view of the drive assembly of embodiment 1; Figure 3 This is a schematic structural diagram of the guide ring and the rotating ring in Example 1; Figure 4 This is a schematic structural diagram of the rotating assembly according to Example 1; Figure 5 is a partial cross-sectional view of the positioning rod according to embodiment 2; Figure 6 yes Figure 5 Enlarged view of point A in the middle; Figure 7 is a partial cross-sectional view of the push rod according to embodiment 3; Figure 8 It is a partial cross-sectional view of the flip assembly according to embodiment 4.

[0028] Explanation of reference numerals: 1. moving seat; 11. walking wheel; 12. supporting rod; 13. avoidance gap; 2. lifter; 3. detector; 31. sliding plate; 32. positioning rod; 321. snap ring groove; 33. positioning spring; 34. adjusting sleeve; 341. embedding groove; 35. adjusting assembly; 351. limiting sleeve; 352. limiting ball; 353. compression spring; 4. lifting seat; 41. first rotating rod; 42. second rotating rod; 43. lifting main rib; 431. sliding groove; 44. lifting secondary rib; 441. third rotating rod; 442. limiting column; 45. flip assembly; 451. flip gear; 452. Flip rack; 5. Guide ring; 51. Guide arc bar; 511. Rotating arc slot; 6. Rotating assembly; 61. Rotating disk; 611. Push slot; 62. Rocker arm; 621. Tension spring; 622. Push block; 63. Push rod; 64. Rotating ring gear; 641. Arc rack; 65. Rotating gear; 66. First bevel gear; 67. Second bevel gear; 7. Rotating ring; 71. Rotating arc bar; 72. Mounting plate; 8. Driving assembly; 81. Driving block; 82. Driving screw; 83. Push rod; 84. Driving gear; 85. Driving rack; 86. Return spring; 87. Driving motor; 9. Column. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1 -Attached Figure 8 This application is described in further detail.

[0030] Example 1

[0031] The embodiment of the present application discloses a concrete micro-crack detection system.

[0032] Reference Figure 1 A concrete micro-crack detection system includes a moving base 1, a lift 2 and a detector 3. The bottom wall of the moving base 1 is installed with multiple walking wheels 11, and the side wall of the moving base 1 is installed with multiple support rods 12. The support rods 12 are vertically arranged and threadedly connected to the moving base 1 (the threads of the support rods 12 are not shown in the figure) so that they can be raised and lowered. The support rods 12 are used to abut the ground to fix the position of the moving base 1; the side wall of the moving base 1 is opened with an avoidance gap 13 for avoiding the column 9.

[0033] Reference Figure 1 、 Figure 2The lifter 2 is installed on the movable seat 1. In this embodiment, the lifter 2 is configured as an aluminum alloy lifter 2 (the aluminum alloy lifter 2 is a prior art structure, and its structure will not be elaborated on here); a lifting seat 4 is fixedly installed on the lifting arm of the lifter 2, and the lifting seat 4 includes a lifting main rib 43 and two lifting secondary ribs 44. The lifting main rib 43 is fixedly connected to the lifting arm of the lifter 2, and the two lifting secondary ribs 44 are both installed on the lifting main rib 43. The length direction of the lifting secondary rib 44 is perpendicular to the length direction of the lifting main rib 43, and the two lifting secondary ribs 44 are spaced apart along the length direction of the lifting main rib 43.

[0034] Reference Figure 1 、 Figure 2 , the two lifting secondary ribs 44 are both slidably connected to the lifting main rib 43, and the lifting main rib 43 is provided with a driving assembly 8 for driving the two lifting secondary ribs 44 to move closer to or away from each other; the side wall of the lifting main rib 43 close to the lifting secondary rib 44 is provided with a sliding groove 431, and the two ends of the sliding groove 431 are extended along the length direction of the lifting main rib 43; the driving assembly 8 includes a driving block 81, a driving screw 82 and a driving member, two driving blocks 81 are provided and the two driving blocks 81 are both slidably installed in the sliding groove 431, and the two driving blocks 81 are corresponding to the two lifting secondary ribs 44; in this embodiment, one end of each lifting secondary rib 44 close to the lifting main rib 43 is fixedly installed on the corresponding driving block 81, and the lifting secondary rib 44 is slidably installed on the lifting main rib 43 through the driving block 81.

[0035] The two ends of the drive screw 82 are rotatably mounted on the inner wall of the sliding groove 431. The length direction of the drive screw 82 is consistent with the length direction of the lifting main rib 43. The drive screw 82 is inserted into the two drive blocks 81. The drive screw 82 and the two drive blocks 81 are both threadedly connected, and the thread rotation directions between the drive screw 82 and the two drive blocks 81 are set to be opposite, so that when the drive screw 82 rotates, the two lifting auxiliary ribs 44 can move closer to or away from each other. A driving member is set on the lifting main rib 43 to drive the drive screw 82 to rotate. In this embodiment, the driving member is set as a driving motor 87. The driving motor 87 is fixedly mounted on one end of the lifting main rib 43. The output shaft of the driving motor 87 passes through the sliding groove 431 and is coaxially connected to the drive screw 82.

[0036] Reference Figure 2 、 Figure 3 The lifting seat 4 is provided with a guide ring 5, which is sleeved on the outer peripheral side of the column 9. The guide ring 5 includes two guide arc bars 51. The two guide arc bars 51 are arranged corresponding to the two lifting auxiliary ribs 44. Each guide arc bar 51 is fixedly installed on the side wall of the corresponding lifting auxiliary rib 44. The guide arc bar 51 is arc-shaped. When the two lifting auxiliary ribs 44 approach each other, the two guide arc bars 51 are combined to form a ring-shaped guide ring 5.

[0037] A rotating ring 7 is coaxially arranged on the guide ring 5, and the rotating ring 7 is rotatably connected to the guide ring 5. A rotating arc groove 511 is provided on the surface of each guide arc bar 51. The rotating ring 7 includes two rotating arc bars 71, and the rotating arc bars 71 are arranged in an arc shape. The two rotating arc bars 71 are arranged corresponding to the two guide arc bars 51. Each rotating arc bar 71 is slidably installed in the rotating arc groove 511 of the corresponding guide arc bar 51. When the two lifting auxiliary ribs 44 approach each other, the two rotating arc bars 71 are combined to form a ring-shaped rotating ring 7.

[0038] Reference Figure 2 、 Figure 3 A mounting plate 72 is fixedly mounted on one of the rotating arc bars 71 of the rotating ring 7, and the detector 3 is fixedly mounted on the mounting plate 72 of the rotating ring 7. The detector 3 is rotatably mounted on the guide ring 5 through the rotating ring 7. In this embodiment, the detector 3 is an acoustic wave detector 3 (the acoustic wave detector 3 is a prior art structure, and its structure is not elaborated on here). A rotating assembly 6 is provided between the lifting seat 4 and the movable seat 1, and the rotating assembly 6 is used to force the detector 3 to intermittently rotate around the central axis of the guide ring 5.

[0039] Reference Figure 1 、 Figure 4 The rotating assembly 6 includes a rotating disk 61, a rocker rod 62, a top rod 63 and a linkage. The first rotating rod 41 and the second rotating rod 42 are rotatably mounted on one of the lifting secondary ribs 44 of the lifting seat 4. The rotating disk 61 is coaxially fixed to the first rotating rod 41. The rotating disk 61 is rotatably mounted on the lifting secondary rib 44 of the lifting seat 4 through the first rotating rod 41. The outer peripheral wall of the rotating disk 61 is provided with a plurality of pushing grooves 611. The plurality of pushing grooves 611 are spaced around the central axis of the rotating disk 61. The rocker arm 62 is in the shape of a long strip, one end of the rocker arm 62 is hinged to the side wall of the lifting auxiliary rib 44, and the side wall of the lifting auxiliary rib 44 is fixedly installed with a limit column 442. A tension spring 621 is installed between the rocker arm 62 and the lifting auxiliary rib 44. One end of the tension spring 621 is hooked to the side wall of the lifting auxiliary rib 44, and the other end is hooked to the rocker arm 62. The tension spring 621 normally forces the rocker arm 62 to rotate until it is against the limit column 442, and when the rocker arm 62 is against the limit column 442, the rocker arm 62 rotates to a horizontal state.

[0040] A push block 622 is hinged on the side wall of the rocker arm 62, and a torsion spring (not shown in the figure) is installed at the hinge between the push block 622 and the rocker arm 62. The torsion spring forces the push block 622 to embed into the push groove 611 of the rotating disk 61. When the rocker arm 62 swings, the push block 622 forces the rotating disk 61 to rotate; the push rod 63 is vertically arranged, and the lower end of the push rod 63 is fixedly mounted on the moving seat 1. When the elevator 2 forces the guide ring 5 to descend to the lowest position, the push rod 63 pushes the rocker arm 62 to swing.

[0041] Reference Figure 2 、 Figure 4The linkage is provided between the rotating disk 61 and the rotating ring 7, and the linkage is used to drive the rotating disk 61 and the rotating ring 7 to rotate synchronously; in this embodiment, the linkage includes a rotating ring gear 64, a rotating gear 65, a first bevel gear 66 and a second bevel gear 67, the rotating ring gear 64 is coaxially fixed to the outer peripheral wall of the rotating ring 7, the rotating gear 65 is coaxially fixed to the outer peripheral wall of the second rotating rod 42, and the rotating ring gear 64 and the rotating gear 65 are meshed for transmission; the first bevel gear 66 is coaxially fixed to the first rotating rod 4 1, the second bevel gear 67 is coaxially fixed to the outer peripheral wall of the second rotating rod 42, and the first bevel gear 66 and the second bevel gear 67 are meshed and transmitted; in this embodiment, the rotating ring gear 64 includes two arcuate racks 641, and the two arcuate racks 641 are correspondingly arranged with the two rotating arc bars 71. Each arcuate rack 641 is fixedly mounted on the outer surface of the corresponding rotating arc bar 71. When the two rotating arc bars 71 are combined to form the rotating ring 7, the two arcuate racks 641 are combined to form the rotating ring gear 64.

[0042] It should be noted that the present application is for micro-crack detection of a column 9 having a certain height, that is, the present application is for micro-crack detection of the middle and upper sections of the column 9. Due to the space occupied by the moving seat 1 and the elevator 2, the micro-crack detection at the connection point between the column 9 and the ground (the lower section of the column 9) is not within the scope of consideration of the present application. Since the lower section of the column 9 is close to the ground, in actual detection, the lower section of the column 9 can be directly detected for micro-cracks using the detector 3 alone.

[0043] The implementation principle of Example 1 of the present application is: when performing micro-crack detection on the column 9, first transfer the detector 3 to the site through the moving seat 1, move the moving seat 1, and move the column 9 into the avoidance gap 13 of the moving seat 1, then drive the driving screw 82 to rotate, drive the two lifting auxiliary ribs 44 to approach each other, so that the two guide arc bars 51 are combined to form an annular guide ring 5, and the two rotating arc bars 71 are combined to form an annular rotating ring 7.

[0044] Next, the lift 2 drives the lifting platform 4 upward, turning on the detector 3, allowing the detector 3 to perform microcrack detection on the column 9 along its height. After the detector 3 reaches the top of the column 9, the lift 2 drives the lifting platform 4 downward. When the detector 3 reaches its lowest position, the push rod 63 forces the rocker arm 62 to rotate upward by a certain angle. The rocker arm 62, through the push block 622, forces the rotating disk 61 to rotate by a certain angle, and the rotating ring 7 rotates synchronously with the rotating disk 61 by a certain angle to adjust the orientation of the detector 3. After the orientation of the detector 3 is adjusted, the lift 2 drives the lifting platform 4 upward, allowing the column 9 to continue to be inspected from a different position.

[0045] After the rocker arm 62 is separated from the top rod 63, it swings back to its original position under the action of the tension spring 621, so that the push block 622 is transferred to the next push groove 611 of the rotating disk 61, so that when the lifting seat 4 descends again, it can continue to push the rotating disk 61 to rotate, thereby realizing intermittent rotation of the detector 3 around the central axis of the guide ring 5, so that the detector 3 can surround the column 9, realize comprehensive concrete micro-crack detection on the column 9, improve the efficiency of micro-crack detection on the column 9, and reduce the workload of the operator.

[0046] Example 2

[0047] The embodiment of the present application discloses a concrete micro-crack detection system.

[0048] The difference between the concrete micro-crack detection system disclosed in the embodiment of the present application and the embodiment 1 is that: Reference Figure 5 、 Figure 6 When the cam 33 is in the unlock state, the locking cam 33 is locked and the locking cam 33 is locked, so that the cam 33 can be unlocked and locked.

[0049] The outer peripheral wall of the positioning rod 32 is provided with a plurality of snap ring grooves 321, which are arranged in an annular shape around the central axis of the positioning rod 32, and the plurality of snap ring grooves 321 are arranged at intervals along the length direction of the positioning rod 32; the adjustment component 35 includes a limit sleeve 351, a limit ball 352 and a compression spring 353, the limit sleeve 351 is slidably sleeved on the outer peripheral wall of the adjustment sleeve 34, and the outer peripheral wall of the adjustment sleeve 34 is provided with a plurality of embedded grooves 341, and the plurality of embedded grooves 341 are arranged at intervals around the central axis of the adjustment sleeve 34, and each embedded groove 341 passes through the adjustment sleeve 3 4; a plurality of limiting balls 352 are provided and are corresponding to the plurality of embedding grooves 341, and each limiting ball 352 is embedded in the corresponding embedding groove 341; a compression spring 353 is sleeved on the outer peripheral side of the adjustment sleeve 34, and one end of the compression spring 353 is fixedly connected to the limiting sleeve 351, and the other end is fixedly connected to the sliding plate 31, and the compression spring 353 forces the limiting sleeve 351 to cover all the embedding grooves 341, and when the limiting sleeve 351 covers the embedding groove 341, the limiting sleeve 351 pushes the limiting ball 352 to partially embed into the snap ring groove 321.

[0050] It should be noted that two anti-slip rings are fixedly installed on the inner wall of each mounting groove 341. The two anti-slip rings are located at the two end slots of the mounting groove 341. The inner diameter of the anti-slip ring is smaller than the inner diameter of the limiting ball 352. The anti-slip ring is used to block the limiting ball 352 and reduce the possibility of the limiting ball 352 falling out of the mounting groove 341.

[0051] The implementation principle of Example 2 of the present application is as follows: through the provision of the positioning rod 32 and the positioning spring 33, the sliding plate 31 is displaced toward the center of the rotating ring 7 under the action of the positioning spring 33, forcing the positioning rod 32 to abut against the outer peripheral wall of the column 9 to control the distance between the detector 3 and the column 9. When the detector 3 rotates around the central axis of the rotating ring 7, under the action of the positioning spring 33, the mounting seat can automatically adjust its position so that the distance between the detector 3 and the column 9 remains unchanged, that is, the distance between the detector 3 and the column 9 before rotation and the distance between the detector 3 and the column 9 after rotation remain the same, thereby improving the detection accuracy. In other words, the provision of the positioning rod 32 and the positioning spring 33 can achieve the effect that when the guide ring 5 is sleeved on the outer peripheral side of the column 9, there is no need to maintain a high degree of coaxiality between the guide ring 5 and the column 9, thereby improving the operational convenience of the overall structure.

[0052] Under the action of the compression spring 353, the limiting sleeve 351 normally covers the embedding groove 341 and pushes the limiting ball 352 to partially embed in the snap ring groove 321, thereby limiting the sliding of the positioning rod 32. When it is necessary to adjust the distance between the detector 3 and the column 9, the limiting sleeve 351 is pulled to force the limiting sleeve 351 out of the embedding groove 341, releasing the limiting effect on the limiting ball 352. At this time, the positioning rod 32 can be pulled to slide to adjust the distance between the detector 3 and the column 9. After the distance adjustment is completed, the limiting sleeve 351 is released. The limiting sleeve 351 re-covers the embedding groove 341 under the action of the compression spring 353, thereby forcing the limiting ball 352 to remain embedded in the current snap ring groove 321, improving the convenience of adjustment.

[0053] Example 3

[0054] The embodiment of the present application discloses a concrete micro-crack detection system.

[0055] The difference between the concrete micro-crack detection system disclosed in the embodiment of the present application and the embodiment 1 is that: Reference Figure 7 In this embodiment, the driving member includes a push rod 83, a driving gear 84, a driving rack 85 and a return spring 86. The push rod 83 is slidably installed on the lifting main rib 43 and can slide along the length direction of the lifting secondary rib 44. The push rod 83 is located between the two lifting secondary ribs 44, and one end of the push rod 83 is used to abut the outer peripheral wall of the column 9; the driving gear 84 is coaxially fixed to the outer peripheral wall of the driving screw 82, and the driving rack 85 is installed on the side wall of the push rod 83. The length direction of the driving rack 85 is consistent with the displacement direction of the push rod 83, and the driving rack 85 and the driving gear 84 are engaged for transmission; the return spring 86 is installed between the push rod 83 and the lifting main rib 43. The return spring 86 forces the push rod 83 to move closer to the column 9 and forces the two driving blocks 81 to move away from each other.

[0056] The implementation principle of Example 3 of the present application is as follows: under normal conditions, the return spring 86 forces the two drive blocks 81 to move away from each other, thereby placing the two guide arcs 51 in a separated state to allow the column 9 to enter; the main lifting rib 43 is displaced by the movable seat 1, forcing the column 9 to move between the two guide arcs 51. During this process, the outer wall of the column 9 is blocked by the push rod 83. As the movable seat 1 continues to move, meshing transmission occurs between the drive gear 84 and the drive rack 85, thereby driving the drive screw 82 to rotate and forcing the two lifting secondary ribs 44 to move closer to each other, so that the two guide arcs 51 are combined to form a guide ring 5 that is sleeved on the column 9. After the inspection is completed, the movable seat 1 is driven away from the column 9. The push rod 83, under the action of the return spring 86, forces the drive screw 82 to reverse, thereby driving the two lifting secondary ribs 44 away from each other, greatly improving the convenience of disassembly and assembly of the guide ring 5.

[0057] Example 4

[0058] The embodiment of the present application discloses a concrete micro-crack detection system.

[0059] The difference between the concrete micro-crack detection system disclosed in the embodiment of the present application and the embodiment 1 is that: Reference Figure 8 In this embodiment, a third rotating rod 441 is fixedly installed at one end of the lifting secondary rib 44 close to the lifting main rib 43. The third rotating rod 441 is rotatably installed on the corresponding driving block 81 in the lifting main rib 43. One end of the lifting secondary rib 44 is rotatably connected to the corresponding driving block 81 through the third rotating rod 441. For the convenience of description, the end of the lifting secondary rib 44 away from the lifting main rib 43 is defined as the free end of the lifting secondary rib 44. The lifting main rib 43 is provided with a flip assembly 45. When the two driving blocks 81 move away from each other, the flip assembly 45 forces the lifting secondary rib 44 to swing around the third rotating rod 441, and the distance between the free ends of the two lifting secondary ribs 44 is expanded.

[0060] The flip assembly 45 includes a flip gear 451 and a flip rack 452. The flip gear 451 is coaxially fixed to the outer peripheral wall of the third rotating rod 441, and the flip rack 452 is fixedly installed on the bottom wall of the lifting main rib 43. The two ends of the flip rack 452 are extended along the length direction of the lifting main rib 43. The flip gear 451 and the flip rack 452 are engaged and transmitted. When the two driving blocks 81 move away from each other, the free ends of the two lifting auxiliary ribs 44 move away from each other.

[0061] The implementation principle of Example 4 of the present application is: through the setting of the third rotating rod 441, the flip gear 451 and the flip rack 452, when the two driving blocks 81 move away from each other, the combination of the flip gear 451 and the flip rack 452 forces the lifting auxiliary ribs 44 to swing, and the distance between the free ends of the two lifting auxiliary ribs 44 is enlarged, so that the column 9 can move out from between the two guide arc bars 51. By rotating the lifting auxiliary ribs 44, the movement amount of the lifting auxiliary ribs 44 is reduced, thereby reducing the manufacturing length of the driving screw 82.

[0062] The above are preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A concrete micro-crack detection system, characterized in that: The invention comprises a moving seat (1), an elevator (2) and a detector (3), wherein the elevator (2) is mounted on the moving seat (1), a lifting seat (4) is mounted on the lifting arm of the elevator (2), the lifting seat (4) is provided with a guide ring (5), the guide ring (5) is sleeved on the outer peripheral side of a column (9), and the detector (3) is rotatably mounted on the guide ring (5) so as to be able to rotate around the central axis of the guide ring (5); a rotating assembly (6) is provided between the lifting seat (4) and the moving seat (1), and the rotating assembly (6) is used to force the detector (3) to intermittently rotate around the central axis of the guide ring (5).

2. A concrete micro-crack detection system according to claim 1, characterized in that: A rotating ring (7) is coaxially arranged on the guide ring (5), and the rotating ring (7) is rotatably connected to the guide ring (5). The detector (3) is arranged on the rotating ring (7), and the detector (3) is rotatably mounted on the guide ring (5) through the rotating ring (7); the rotating assembly (6) comprises a rotating disk (61), a swing rod (62), a push rod (63) and a linkage member; the rotating disk (61) is rotatably mounted on the lifting seat (4), and the outer peripheral wall of the rotating disk (61) is provided with a plurality of pushing grooves (611), and the plurality of pushing grooves (611) are arranged at intervals around the central axis of the rotating disk (61); one end of the swing rod (62) is hinged to the lifting seat (4), and a tension spring (621) is provided between the swing rod (62) and the lifting seat (4). The tension spring (621) forces the swing rod (62) to rotate to a horizontal state; a push block (622) is hinged on the side wall of the swing rod (62); a torsion spring is provided between the push block (622) and the swing rod (62); the torsion spring forces the push block (622) to be embedded in the push groove (611) of the rotating disk (61); when the swing rod (62) swings, the push block (622) forces the rotating disk (61) to rotate; one end of the push rod (63) is connected to the moving seat (1); when the elevator (2) forces the guide ring (5) to descend to the lowest position, the push rod (63) pushes the swing rod (62) to swing; the linkage member is provided between the rotating disk (61) and the rotating ring (7) to drive the rotating disk (61) and the rotating ring (7) to rotate synchronously.

3. A concrete micro-crack detection system according to claim 2, characterized in that: The lifting seat (4) is rotatably mounted with a first rotating rod (41) and a second rotating rod (42), respectively; the rotating disk (61) is coaxially arranged on the first rotating rod (41); the rotating disk (61) is rotatably mounted on the lifting seat (4) through the first rotating rod (41); the linkage member comprises a rotating ring gear (64), a rotating gear (65), a first bevel gear (66) and a second bevel gear (67); the rotating ring gear (64) is coaxially arranged on the outer peripheral wall of the rotating ring (7); the rotating gear (65) is coaxially arranged on the outer peripheral wall of the second rotating rod (42); the rotating ring gear (64) and the rotating gear (65) are meshed for transmission; the first bevel gear (66) is coaxially arranged on the outer peripheral wall of the first rotating rod (41); the second bevel gear (67) is coaxially arranged on the outer peripheral wall of the second rotating rod (42); the first bevel gear (66) and the second bevel gear (67) are meshed for transmission.

4. A concrete micro-crack detection system according to claim 2, characterized in that: A sliding plate (31) is provided at the bottom of the detector (3), and the sliding plate (31) is slidably connected to the rotating ring (7) and can be displaced along the radial direction of the rotating ring (7); the sliding plate (31) is connected to a positioning rod (32), and a positioning spring (33) is provided between the sliding plate (31) and the rotating ring (7), and the positioning spring (33) forces the sliding plate (31) to move toward the center of the rotating ring (7) and forces the positioning rod (32) to abut against the outer peripheral wall of the column (9).

5. A concrete micro-crack detection system according to claim 4, characterized in that: The sliding plate (31) is provided with an adjustment sleeve (34), and one end of the positioning rod (32) away from the column (9) is inserted into the adjustment sleeve (34); the adjustment sleeve (34) is provided with an adjustment component (35), and the adjustment component (35) is used to adjust the distance between the sliding plate (31) and the column (9).

6. A concrete micro-crack detection system according to claim 5, characterized in that: The outer peripheral wall of the positioning rod (32) is provided with a plurality of snap ring grooves (321), and the plurality of snap ring grooves (321) are arranged at intervals along the length direction of the positioning rod (32); the adjustment component (35) comprises a limiting sleeve (351), a limiting ball (352) and a compression spring (353), the limiting sleeve (351) is slidably sleeved on the outer peripheral wall of the adjustment sleeve (34), and the outer peripheral wall of the adjustment sleeve (34) is provided with an embedding groove (341 ), the limiting ball (352) is embedded in the embedding groove (341); the compression spring (353) is arranged between the adjustment sleeve (34) and the limiting sleeve (351), the compression spring (353) forces the limiting sleeve (351) to cover the embedding groove (341), and when the limiting sleeve (351) covers the embedding groove (341), the limiting sleeve (351) pushes the limiting ball (352) to be partially embedded in the clamping ring groove (321).

7. A concrete micro-crack detection system according to claim 2, characterized in that: The lifting seat (4) comprises a lifting main rib (43) and two lifting secondary ribs (44), the lifting main rib (43) is connected to the lifting arm of the lift (2), the two lifting secondary ribs (44) are slidably mounted on the lifting main rib (43), and the lifting main rib (43) is provided with a driving assembly (8) for driving the two lifting secondary ribs (44) to move closer to or farther from each other; the guide ring (5) comprises two guide arc bars (51), the two guide arc bars (51) are arranged corresponding to the two lifting secondary ribs (44), and each guide arc bar (51) is mounted on a corresponding lifting secondary rib (44); a rotating arc groove (511) is provided on the surface of each of the guide arc bars (51); the rotating ring (7) comprises two rotating arc bars (71); the two rotating arc bars (71) are arranged corresponding to the two guide arc bars (51); each of the rotating arc bars (71) is slidably installed in the rotating arc groove (511) of the corresponding guide arc bar (51); when the two lifting auxiliary ribs (44) are close to each other, the two guide arc bars (51) are combined to form the annular guide ring (5), and the two rotating arc bars (71) are combined to form the annular rotating ring (7).

8. A concrete micro-crack detection system according to claim 7, characterized in that: The driving assembly (8) comprises a driving block (81), a driving screw rod (82) and a driving member. The lifting main rib (43) is provided with a sliding groove (431). Two driving blocks (81) are provided and both driving blocks (81) are slidably mounted in the sliding groove (431). The two driving blocks (81) are arranged correspondingly to the two lifting secondary ribs (44). Each lifting secondary rib (44) is mounted on a corresponding driving block (81). The lifting secondary rib (44) is driven by the driving block ( 81) is slidably mounted on the lifting main rib (43); both ends of the driving screw rod (82) are rotatably mounted on the inner wall of the sliding groove (431), the driving screw rod (82) is passed through the two driving blocks (81), the driving screw rod (82) and the two driving blocks (81) are both threadedly connected, and the thread rotation directions between the driving screw rod (82) and the two driving blocks (81) are set to be opposite; the driving member is set on the lifting main rib (43) to drive the driving screw rod (82) to rotate.

9. A concrete micro-crack detection system according to claim 8, characterized in that: The driving member comprises a push rod (83), a driving gear (84), a driving rack (85) and a return spring (86); the push rod (83) is slidably mounted on the lifting main rib (43); one end of the push rod (83) is used for abutting against the outer peripheral wall of the column (9); the driving gear (84) is coaxially arranged on the outer peripheral wall of the driving screw rod (82); the driving rack (85) is mounted on the push rod (83); the length direction of the driving rack (85) is consistent with the displacement direction of the push rod (83); the driving rack (85) and the driving gear (84) are meshed and transmitted; the return spring (86) is mounted between the push rod (83) and the lifting main rib (43); the return spring (86) forces the two driving blocks (81) to move away from each other.

10. A concrete micro-crack detection system according to claim 8, characterized in that: A third rotating rod (441) is provided at one end of the lifting secondary rib (44), and the third rotating rod (441) is rotatably mounted on the corresponding driving block (81). One end of the lifting secondary rib (44) is rotatably connected to the corresponding driving block (81) through the third rotating rod (441); the lifting main rib (43) is provided with a flip assembly (45), and when the two driving blocks (81) move away from each other, the flip assembly (45) forces the lifting secondary rib (44) to swing around the third rotating rod (441), and the distance between the free ends of the two lifting secondary ribs (44) is enlarged.

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