A wall structure local deformation detection device and method

Abstract

The present application relates to the technical field of underground wall deformation detection, in particular to a wall structure local deformation detection device and method, the detection device is used for detecting the deformation of the external corner of the underground wall of the sewage treatment plant, comprising a reference support vertically arranged at the external corner of the wall and a detection assembly installed on the reference support, the detection assembly comprises a liftable and rotatable electric slide rail, a multi-point array laser distance monitor and a cleaning group; the reference support is independently arranged at the external corner of the underground wall, and the balance member is used to first keep the main support and the auxiliary support forming a right angle track, and then the calibration assembly is used to fine-tune the reference support, so as to reduce the angle deviation between the right angle track and the external corner, reduce the error of the local deformation detection of the wall structure, the multi-point array laser distance monitor and the cleaning group move synchronously, which can shorten the detection time and reduce the influence of soil adhesion on the wall deformation detection, and the detection error is reduced through the two improvements.

Description

Technical Field

[0001] This invention relates to the field of underground wall deformation detection technology, specifically to a device and method for detecting local deformation of wall structures. Background Technology

[0002] Underground wastewater treatment plants have been gradually promoted and applied in China due to their significant advantages, such as being environmentally friendly, saving land, enabling comprehensive land development and utilization, and effectively addressing the NIMBY (Not In My Backyard) effect. There are two types of underground wastewater treatment plants: fully underground and semi-underground. A fully underground wastewater treatment plant refers to a plant where the entire building is buried underground, with the roof lower than the surrounding ground level, and the production and management of the wastewater treatment plant are carried out in the operating space on the first underground floor. A semi-underground wastewater treatment plant refers to a plant where only the treatment structures, such as water tanks, are buried underground.

[0003] In underground structures such as the walls of secondary sedimentation tanks, anaerobic tanks, and biological treatment tanks, the internal and external corners can experience stress concentration due to right-angle structures, combined with the external earth pressure and internal water pressure along the tangent of the corner, leading to structural cracking or bulging and localized deformation. In addition, during wastewater treatment in secondary sedimentation tanks and anaerobic tanks, the lateral pressure generated by the alternating changes in wastewater level will repeatedly act on the internal corners of the central walls, causing wall fatigue and deformation.

[0004] Currently, laser rangefinders can be used to detect local deformation of walls. However, when the soil near the corners is excavated and the laser rangefinder is moved up and down to detect local protrusions or cracks at the corners of underground walls, firstly, if the already deformed wall is used as a reference for initial positioning, the positioning will be inaccurate, leading to errors in the measured distance. Specifically, since the two vertical straight sections of the wall are also subject to underground loads and water pressure loads, they are not absolutely stable references. Using the straight section of the wall that is deformable as the positioning reference will cause the positioning reference to shift synchronously with the wall deformation. Secondly, soil will adhere to the outer wall, and the laser emitted by the laser rangefinder will be blocked and reflected by the soil before reaching the wall, resulting in inaccurate measurements of wall deformation. Summary of the Invention

[0005] This invention provides a device and method for detecting local deformation of wall structures, in order to solve the problem in related technologies that laser rangefinders have large errors in measuring local deformation of walls due to benchmark positioning deviations and contamination of the outer wall of underground walls.

[0006] This invention provides a wall structure local deformation detection device for detecting the deformation at the external corner of the underground wall of a sewage treatment plant. The device includes a reference support vertically set around the external corner of the wall and a detection component installed on the reference support. The reference support includes a vertically set main support and two auxiliary supports, which are located on the front and right sides of the main support, respectively. A balancing component is provided on the main support and the two auxiliary supports.

[0007] The detection assembly includes a lifting sleeve that slides vertically on the main support. A rotating ring is rotatably mounted on the outer circumference of the lifting sleeve. A rotating shaft is rotatably mounted on the side wall of the rotating ring. An electric slide rail is fixedly connected to the end of the rotating shaft. The detection assembly also includes an electric slider two that slides laterally in the groove of the electric slide rail. An installation plate is mounted on the electric slider two. An embedding groove is opened on the surface of the installation plate. A multi-point array laser distance monitor can be detachably installed in the embedding groove. The installation plate is also equipped with a cleaning unit for cleaning up the soil and stains that have not been completely removed from the outer wall of the underground wall.

[0008] By precisely positioning the external reference brackets and simultaneously cleaning the uncleaned walls using the lifting cleaning group, the detection deviation of the multi-point array laser distance monitor is reduced when the electric slide rail drives the multi-point array laser distance monitor to rise and fall.

[0009] In one possible implementation, two balancing components are arranged vertically. The balancing component includes a connecting sleeve that is slidably disposed on the main support and a sliding sleeve that is slidably disposed on two auxiliary supports. The connecting sleeve and the sliding sleeve at the same height are fixedly connected by a connecting rod, and the two connecting rods are perpendicular to each other.

[0010] In one possible implementation, the cleaning assembly includes drive shafts rotatably mounted on the front and rear side walls of the mounting plate. Two inclined scrapers are fixedly connected to the two drive shafts. One inclined scraper is fixedly connected to the drive shaft, and the other inclined scraper is rotatably connected to the drive shaft. The included angle between the two inclined scrapers is fixed by a fastener, and guide plates are fixed on opposite sides of the two inclined scrapers. The guide plates guide the soil scraped off by the upper inclined scraper to both sides for discharge.

[0011] In one possible implementation, during the downward phase of the electric slide rail, only the inclined scraper located on the lower side contacts the outer wall, and during the upward phase of the electric slide rail, only the inclined scraper located on the upper side contacts the outer wall.

[0012] In one possible implementation, an auxiliary component is provided at the end of the inclined scraper away from the drive shaft. The auxiliary component includes a strip groove formed at the end of the inclined scraper, a rotating shaft rotatably mounted in the strip groove, and rubber wheels fixedly mounted at both ends of the rotating shaft extending out of the strip groove. A strip plate is fixed at the opening of the strip groove, and several cleaning brushes are rotatably mounted on the strip plate. The cleaning brushes are driven by a bevel gear set.

[0013] In one possible implementation, the electric slider 2 drives the mounting plate, the multi-point array laser distance monitor and the cleaning group to perform lateral cutting during the up-and-down movement phase, so as to perform multi-point detection on the outer wall of the wall. When one side is detected, the rotating ring drives the electric slide rail to rotate horizontally by 90 degrees, and the electric slide rail itself rotates 180 degrees to detect the other side of the external corner.

[0014] In one possible implementation, the testing equipment further includes a calibration component for calibrating the initial positioning of the main support. The calibration component includes an isosceles trapezoidal plate vertically inserted into the inside corner of the wall. Two vertical round rods are fixed to the top of the isosceles trapezoidal plate and the top of the main support. The line connecting the centers of the two round rods at the top of the isosceles trapezoidal plate passes through the angle bisector of the outside corner of the wall, and the line connecting the centers of the two round rods at the top of the main support passes through the angle bisector of the balancing element. The calibration component also includes two parallel tie rods, one of which is fitted onto the round rod at the top of the main support, and the other is fitted onto the round rod at the top of the isosceles trapezoidal plate. The two parallel tie rods are connected by an X-shaped scissor mechanism to ensure that the two parallel tie rods remain parallel at all times.

[0015] In one possible implementation, a support member is provided on the side of the auxiliary support facing the wall. The support member includes an electric slider that is slidably disposed within the auxiliary support. A support plate is fixed to the bottom of the electric slider and is used to support the electric slide rail. A receiving groove is formed on the upper surface of the support plate. A positioning block is slidably installed in the receiving groove. The positioning block consists of a wedge-shaped block with its inclined surface facing away from the auxiliary support and an L-shaped plate fixed to the lower surface of the wedge-shaped block. The vertical surface of the wedge-shaped block plays a limiting role for the electric slide rail. The vertical section of the L-shaped plate slides through the bottom of the receiving groove, and the horizontal section of the L-shaped plate is connected to the bottom of the support plate by a spring.

[0016] In one possible implementation, the connecting sleeve is a magnetic sleeve, and each of the two auxiliary supports is provided with a magnetic blocking block on the side away from the wall. The two blocking blocks are set at different heights, and one of the sliding sleeves of the upper balancing component has a clearance groove corresponding to the lower blocking block.

[0017] The present invention also provides a method for detecting local deformation of wall structure, including the following steps: S1, positioning the main support and auxiliary support by using an external laser collimator and laser angle meter, and placing the balancing component on the outside of the main support and the two auxiliary supports so that the line connecting the main support and the two auxiliary supports is at a right angle.

[0018] S2. Fine-tune the main support using the calibration components.

[0019] S3. Calibrate the multi-point array laser distance monitor and adjust the angle of the inclined scraper so that the lower inclined scraper contacts the wall. The lifting sleeve drives the electric slide rail to move down together. The multi-point array laser distance monitor performs multi-point distance measurement on the wall cleaned by the lower inclined scraper. When the lifting sleeve moves back up, the multi-point array laser distance monitor changes position laterally, and the upper inclined scraper contacts the wall.

[0020] S4. After the inspection of one side wall of the external corner of the wall is completed, rotate the electric slide rail that has been moved up above the wall horizontally by 90 degrees, and rotate the electric slide rail itself by 180 degrees during the rotation, so that the end of the electric slide rail is supported and limited by another support. Inspect the other side wall of the external corner of the wall in the same way as the previous step.

[0021] The above-mentioned one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects: This application sets a reference support independently on the periphery of the external corner of the underground wall, and uses a balancing component to first keep the main support and the auxiliary support forming a right-angle trajectory, and then uses a calibration component to fine-tune the reference support, so as to reduce the angular deviation between the right-angle trajectory and the external corner, and reduce the error of local deformation detection of the wall structure.

[0022] In addition, the electric slider 2 drives the point array laser distance monitor and the cleaning group to move synchronously, so that cleaning and detection can be carried out at the same time. This shortens the detection time and reduces the impact of soil adhesion on the detection of wall deformation. The detection error is reduced through these two improvements.

[0023] Finally, regardless of which side of the outer wall the electric slide rail drives the multi-point array laser distance monitor to detect, the electric slide rail is supported at the end by a support component, which reduces the detection error caused by the cantilever effect. Attached Figure Description

[0024] Figure 1 This is a plan view of the detection device provided in this embodiment of the invention performing deformation detection on the corner of a wall;

[0025] Figure 2 This is a three-dimensional schematic diagram of the detection device provided in this embodiment of the invention performing deformation detection on the corner of a wall;

[0026] Figure 3This is a three-dimensional schematic diagram from another perspective of the detection device provided in this embodiment of the invention for detecting deformation at the corner of a wall;

[0027] Figure 4 This is a partial structural schematic diagram of the detection component provided in an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the installation of the reference bracket and detection components provided in an embodiment of the present invention;

[0029] Figure 6 This is an installation diagram of the main support and detection components provided in an embodiment of the present invention;

[0030] Figure 7 yes Figure 5 Enlarged view of region A in the middle;

[0031] Figure 8 This is a partial sectional view of the auxiliary support and support provided in an embodiment of the present invention;

[0032] Figure 9 This is a schematic diagram of the calibration component provided in an embodiment of the present invention.

[0033] In the diagram: 100, wall; 2, reference bracket; 20, main bracket; 21, auxiliary bracket; 22, balancing component; 221, sliding sleeve; 222, connecting rod; 223, connecting sleeve; 23, support component; 231, electric slider one; 232, support plate; 233, receiving groove; 234, positioning block; 235, spring; 3, detection component; 31, lifting sleeve; 32, rotating ring; 33, rotating shaft; 34, electric slide rail; 35, positioning component; 36, mounting plate; 37, multi-point array laser distance monitor; 38, cleaning assembly; 381, inclined scraper; 382, ​​guide plate; 383, fixing component; 384, auxiliary component; 385, rotating shaft; 386, rubber wheel; 387, strip plate; 388, cleaning brush; 4, calibration component; 41, isosceles trapezoidal plate; 42, parallel tie rod; 43, scissor lift component. Detailed Implementation

[0034] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0035] Please see Figure 1 , Figure 2 and Figure 3A wall structure local deformation detection device is used to detect the deformation at the external corner of the underground wall 100 of a sewage treatment plant. The detection device includes a reference support 2 vertically set around the external corner of the wall 100 and a detection component 3 installed on the reference support 2 to detect the deformation of the wall 100. The reference support 2 includes a main support 20 and two auxiliary supports 21 vertically set. There are two auxiliary supports 21, located in front of and to the right of the main support 20, respectively. A balancing component 22 is set on the main support 20 and the two auxiliary supports 21. There are two balancing components 22, one vertically and one vertically. The balancing component 22 includes a connecting sleeve 223 slidably set on the main support 20 and a sliding sleeve 221 slidably set on the two auxiliary supports 21. The connecting sleeve 223 and the sliding sleeve 221 of the same height are fixedly connected by a connecting rod 222. The two connecting rods 222 are perpendicular to each other. The connecting sleeve 223 is a magnetic sleeve.

[0036] It should be noted that before inspecting the deformation at the external corner of the wall 100, the soil near the external corner needs to be dug up until the entire external corner is exposed. Then, the main support 20 is positioned first, and the auxiliary supports 21 are positioned on the front and right sides of the main support 20, ensuring that the line connecting the main support 20 and the two auxiliary supports 21 is at a right angle. A laser collimator and a laser angle meter can be used to assist in positioning the main support 20 and the auxiliary supports 21.

[0037] Please see Figure 2 and Figure 9 To ensure that the angle bisector of the balancing component 22 is parallel to or on the same straight line as the angle bisector of the external corner of the wall 100, and to further improve the accuracy of the initial positioning of the reference support 2, a calibration component 4 for calibrating the initial positioning of the main support 20 is provided on the top of the main support 20. The calibration component 4 includes an isosceles trapezoidal plate 41 vertically inserted into the internal corner of the wall 100. Two vertical round rods are fixed to the top of the isosceles trapezoidal plate 41 and the top of the main support 20. The line connecting the centers of the two round rods at the top of the isosceles trapezoidal plate 41 passes through the angle bisector of the external corner of the wall 100, and the line connecting the centers of the two round rods at the top of the main support 20 passes through the diagonal of the cross-section of the main support 20, and this diagonal overlaps with the angle bisector of the balancing component 22. The calibration component 4 makes the angle bisector of the external corner of the wall 100 parallel to the angle bisector of the balancing component 22, thereby calibrating the initial positioning of the main support 20.

[0038] The calibration component 4 also includes two parallel tie rods 42. One parallel tie rod 42 is sleeved on the round rod at the top of the main support 20, and the other parallel tie rod 42 is sleeved on the round rod at the top of the isosceles trapezoidal plate 41. The principle of two points determining a straight line is used to ensure that the two parallel tie rods 42 cannot rotate after being installed on the round rod. The two parallel tie rods 42 are connected by an X-shaped scissor bracket 43. Specifically, the scissor bracket 43 includes two rods that are hinged together in the middle. One rod is rotatably connected to the parallel tie rod 42 at both ends, and the other rod is slidably connected to the grooves on the parallel tie rod 42 at both ends by short rods that rotate through its ends.

[0039] The distance between the two parallel tie rods 42 is adjusted by adjusting the opening degree of the scissor lift 43. When one of the isosceles trapezoidal plates 41 can fit onto the corresponding round rod, while the other parallel tie rod 42 cannot connect with the corresponding round rod, it indicates that there is a deviation in the angle bisector, and the positioning of the main support 20 needs to be fine-tuned.

[0040] It should be noted that the fine-tuning of the main support 20 using calibration component 4 is an auxiliary step. During the initial positioning of the main support 20 and auxiliary support 21, an external laser collimator and laser angle meter are used for positioning. This is to avoid interference from the deformed wall 100 on the positioning of the main support 20. After the main support 20, auxiliary support 21, and balance component 22 are positioned but not completely fixed, calibration component 4 is used to fine-tune the main support 20. This is to avoid measurement deviations caused by the angle between the right angle formed by the connecting rod 222 and the external angle of the wall 100, thus ensuring the isosceles trapezoid is properly positioned. The purpose of clamping plate 41 above the inside corner of wall 100 is that the part of wall 100 located on the ground does not directly bear the external earth pressure and internal water pressure, and the stress concentration effect at the location more than 3 meters away from the outside corner is also weak. The deformation that occurs at this location in a short period of time is minimal. When regularly inspecting these key areas of the wall, such as the outside corner, the error generated by clamping and fixing the isosceles trapezoidal plate 41 in the area with smaller deformation on the straight section is smaller. Correspondingly, the angle deviation between the right angle formed by the connecting rod 222 and the outside corner of wall 100 itself is also smaller, that is, the positioning of the reference bracket 2 is more accurate.

[0041] Please see Figure 3 and Figure 4The detection component 3 includes a lifting sleeve 31 that slides up and down on the main support 20. A rotating ring 32 is rotatably mounted on the outer circumference of the lifting sleeve 31. A rotating shaft 33 is rotatably mounted on the side wall of the rotating ring 32. An electric slide rail 34 is fixedly connected to the end of the rotating shaft 33. The detection component 3 also includes an electric slider 2 that slides laterally in the groove of the electric slide rail 34. An installation plate 36 is mounted on the electric slider 2. An embedding groove is opened on the surface of the installation plate 36. A multi-point array laser distance monitor 37 is detachably installed in the embedding groove. A cleaning group 38 is also provided on the installation plate 36 for cleaning the soil and stains that have not been removed from the outer wall of the underground wall 100.

[0042] It should be noted that the lifting of the lifting sleeve 31 can be driven by existing lifting devices, such as multi-stage electric telescopic rods or multi-stage hydraulic rods.

[0043] It should also be noted that each of the two auxiliary supports 21 has a magnetic blocking block on the side away from the wall 100. The two blocking blocks are set at different heights. One of the sliding sleeves 221 of the upper balance component 22 has a clearance groove corresponding to the lower blocking block. When the lifting sleeve 31 drives the electric slide rail 34 downward through the rotating ring 32, after the electric slide rail 34 has moved down a certain distance, the lifting sleeve 31 begins to contact the connecting sleeve 223 and pushes the upper balance component 22 downward together. The purpose of setting the balance component 22 is to ensure that the reference support 2 can also maintain a well-positioned state during the operation of the detection component 3, and is not affected by external vibration. When the upper balance component 22 contacts the lower balance component 22, the two balance components 22 move down together with the electric slide rail 34 until the electric slide rail 34 drives the multi-point array. After the laser distance monitor 37 has completed the detection of the entire wall 100, when the lifting sleeve 31 moves upward and resets, the connecting sleeve 223 and the lifting sleeve 31 are still magnetically attracted to each other and move upward as a whole. When the lower sliding sleeve 221 touches the lower magnetic blocking block, the lower magnetic blocking block, on the one hand, mechanically prevents the lower balancing component 22 from moving upward, and on the other hand, magnetically attracts the lower sliding sleeve 221 to prevent it from falling. The lifting sleeve 31 and the upper balancing component 22 continue to move upward until the upper magnetic blocking block blocks the upper balancing component 22. The lifting sleeve 31 continues to move upward and overcomes the attraction between it and the connecting sleeve 223, so that the two finally separate. The lifting sleeve 31 finally rises above the top of the wall 100, and the two balancing components 22 reset, waiting to be pressed and moved in the next round.

[0044] Please see Figure 5 , Figure 6 and Figure 7The cleaning assembly 38 includes drive shafts rotatably mounted on the front and rear side walls of the mounting plate 36. Two inclined scrapers 381 are fixedly connected to the two drive shafts. One inclined scraper 381 is fixedly connected to the drive shaft, and the other inclined scraper 381 is rotatably connected to the drive shaft. The included angle between the two inclined scrapers 381 is fixed by a fastener 383. Guide plates 382 are fixed on opposite sides of the two inclined scrapers 381. The guide plates 382 guide the soil scraped off by the upper inclined scraper 381 to both sides for discharge, preventing it from falling onto the multi-point array laser distance monitor 37 and affecting its measurement accuracy.

[0045] The inclined scraper 381 has several linearly distributed circular holes on both its front and rear sides. A fixing member 383 is inserted into the circular holes on two of the inclined scrapers 381 to lock their angles. When the drive shaft drives the fixedly connected inclined scraper 381 to rotate, the fixing member 383 drives the other inclined scraper 381 to rotate as well. During the downward movement of the electric slide rail 34, the lower inclined scraper 381 contacts the outer wall of the wall 100, while the upper inclined scraper 381 contacts the outer wall of the wall 100. After the lower inclined scraper 381 removes the soil from the outer wall of the wall 100, the soil moves along the lower surface of the lower inclined scraper 381 and eventually falls off under its own weight. During the upward movement of the electric slide rail 34, the lower inclined scraper 381 separates from the outer wall of the wall 100, while the upper inclined scraper 381 contacts the outer wall of the wall 100. The soil moves along the upper surface of the upper inclined scraper 381 and is eventually guided by the upper guide plate 382 to be outside the scraping range of the inclined scraper 381.

[0046] The contact force between the inclined scraper 381 and the wall 100 can be adjusted by controlling the rotation angle of the drive shaft, which is driven by a built-in micro motor. When the distance between the electric slide rail 34 and the outer wall of the wall 100 is different, the horizontal projection distance of the inclined scraper 381 can be changed by adjusting the included angle between the two inclined scrapers 381, thereby preventing the end of the inclined scraper 381 from not being able to contact the outer wall of the wall 100 or from being blocked by the top of the wall 100 when the inclined scraper 381 moves up and down. To enhance the scraping effect of the inclined scraper 381, an auxiliary component 384 is provided at the end of the inclined scraper 381 away from the drive shaft. The auxiliary component 384 includes a strip groove formed at the end of the inclined scraper 381. A rotating shaft 385 is rotatably installed in the strip groove. Rubber wheels 386 are fixedly installed at both ends of the rotating shaft 385 extending out of the strip groove. A strip plate 387 is fixed at the opening of the strip groove. Several cleaning brushes 388 are rotatably installed on the strip plate 387. The cleaning brushes 388 are driven by a bevel gear set.

[0047] As the inclined scraper 381 moves up or down, the rubber wheel 386 moves accordingly. The friction between the rubber wheel 386 and the wall 100 causes the rubber wheel 386 to drive the rotating shaft 385 to rotate, thereby causing multiple cleaning brushes 388 to rotate synchronously under the transmission of bevel gears. The rotating cleaning brushes 388 brush the scraping area of ​​the inclined scraper 381 to clean the adhering dirt. When the electric slide rail 34 is raised and lowered, the multi-point array laser distance monitor 37 emits multiple independent laser signals. The laser signals are reflected and captured after encountering the wall 100. The captured signals are filtered and amplified, and then the data is processed to obtain the distance from multiple laser emission points of the multi-point array laser distance monitor 37 to the outer wall of the wall 100. The multi-point array laser distance monitor 37 moves from top to bottom and can be moved laterally during the return trip, thereby collecting multi-point array distance data on the outer wall of the wall 100. The coordinate system of the outer wall surface of the wall 100 is constructed by collecting the data, thereby obtaining the deformation of the wall 100.

[0048] During the descent phase, the multi-point array laser distance monitor 37 detects a certain range. During the return descent phase, the mounting plate 36, the multi-point array laser distance monitor 37, and the cleaning group 38 move laterally along the electric slide rail 34 to detect the next range. The multi-point array laser distance monitor 37 can simultaneously detect the distance from multiple points to the outer wall of the wall 100, and analyze the deformation of the surface of the wall 100 by the difference in distance values.

[0049] Please see Figure 2 and Figure 8 To prevent measurement errors caused by the cantilever effect when the rotating ring 32 drives the electric slide rail 34 to descend, and to limit the extension direction of the electric slide rail 34, a support member 23 is provided on the side of the auxiliary support 21 facing the wall 100. The support member 23 includes an electric slider 231 slidably disposed in the auxiliary support 21. A support plate 232 is fixed at the bottom of the electric slider 231. The support plate 232 extends towards the outer wall of the wall 100, and a receiving groove 233 is formed on the upper surface of the support plate 232. A positioning block 234 is slidably installed in the receiving groove 233. The positioning block 234 consists of a wedge-shaped block with its inclined surface facing away from the auxiliary support 21 and an L-shaped plate fixed on the lower surface of the wedge-shaped block. The vertical section of the L-shaped plate slides through the bottom of the receiving groove 233, and the horizontal section of the L-shaped plate is connected to the bottom of the support plate 232 by a spring 235.

[0050] When the electric slide rail 34 switches working positions, it needs to be rotated horizontally. When the electric slide rail 34 rotates, its bottom pushes against the inclined surface of the wedge block, causing the positioning block 234 to be forced to move downward and retract into the receiving groove 233. The spring 235 is gradually stretched by the pulling force of the L-shaped plate. When the electric slide rail 34 moves to fit with the auxiliary support 21, the inclined surface of the positioning block 234 is no longer squeezed by the electric slide rail 34. The spring 235 quickly resets and drives the positioning block 234 to move upward. At this point, the vertical surface of the wedge block plays a limiting role in the electric slide rail 34. During the process of the electric slide rail 34 descending with the rotating ring 32, the electric slider 231 also moves downward synchronously. The support plate 232 supports the free end of the electric slide rail 34, eliminating the cantilever effect of the electric slide rail 34. Furthermore, the restriction of the positioning block 234 ensures that the electric slide rail 34 will not deflect slightly in the horizontal direction during the descent.

[0051] It should be noted that when the electric slide rail 34 rotates to switch positions, the support member 23 can be lowered separately and separated from the electric slide rail 34, thus releasing the positioning block 234 from limiting the electric slide rail 34.

[0052] The electric slide rail 34 is capable of rotating 180 degrees to ensure that even after rotating 90 degrees horizontally, the cleaning assembly 38 on it can still perform local deformation detection on the other side of the external corner. Please refer to [link / reference]. Figure 4 To ensure that the electric slide rail 34 remains stable after being manually rotated, a positioning component 35 is fixedly sleeved on the rotating shaft 33. The positioning component 35 is an annular structure with two convex plates symmetrically fixed on the outer ring. Each of the two convex plates is provided with a signal receiver. Two symmetrically distributed signal transmitters are provided on the outer wall of the rotating ring 32 and outside the annular area of ​​the rotating shaft 33. When the signal emitted by the signal transmitter can be received by the signal receiver, it indicates that the rotation angle of the electric slide rail 34 is exactly 180 degrees.

[0053] During operation: S1: The main support 20 and the auxiliary support 21 are positioned by an external laser collimator and laser angle meter, and the balance component 22 is fitted on the outside of the main support 20 and the two auxiliary supports 21 so that the line connecting the main support 20 and the two auxiliary supports 21 is at a right angle.

[0054] S2: Use calibration component 4 to fine-tune the main support 20. Specifically, first, clip the isosceles trapezoidal plate 41 above the wall 100 inside corner, and then put one of the parallel tie rods 42 onto the round rod at the top of the main support 20. By adjusting the X-shaped scissor piece 43, the other parallel tie rod 42 can be put onto the round rod at the top of the isosceles trapezoidal plate 41. At this point, the reference support 2 is adjusted and fixed.

[0055] S3: Calibrate the multi-point array laser distance monitor 37 and adjust the angle of the inclined scraper 381 so that the lower inclined scraper 381 contacts the wall 100. If the movement of the inclined scraper 381 is obstructed during the downward phase, its tilt direction is finely adjusted. The lifting sleeve 31 drives the electric slide rail 34 to move down together. The multi-point array laser distance monitor 37 performs multi-point distance measurement on the wall 100 cleaned by the lower inclined scraper 381.

[0056] After the downward detection is completed, the electric slider 2 drives the multi-point array laser distance monitor 37 to move horizontally. Then the lifting sleeve 31 begins to move upward and reset. At this time, the upper inclined scraper 381 is adjusted to contact the outer wall of the wall 100, and the lower inclined scraper 381 is separated from the outer wall of the wall 100. When the lifting sleeve 31 drives the multi-point array laser distance monitor 37 to rise above the wall 100, a new round of downward detection begins.

[0057] S4: After the inspection of one side wall of the external corner of the wall 100 is completed, the electric slide rail 34, which has been moved up to the wall 100, is rotated horizontally by 90 degrees. During the rotation, the electric slide rail 34 itself is rotated 180 degrees so that the end of the electric slide rail 34 is supported and limited by another support member 23. The other side wall of the external corner of the wall 100 is inspected in the same way as in the third step.

[0058] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0059] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integral connection, or a sliding connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0060] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A device for detecting local deformation of a wall structure, characterized in that: The detection equipment is used to detect the deformation at the external corner of the underground wall of a sewage treatment plant. It includes a reference support vertically set on the periphery of the external corner of the wall and a detection component installed on the reference support. The reference support includes a vertically set main support and two auxiliary supports. The two auxiliary supports are located on the front and right sides of the main support, respectively. A balancing component is set on the main support and the two auxiliary supports. The detection assembly includes a lifting sleeve that slides up and down on the main support. A rotating ring is rotatably mounted on the outer circumference of the lifting sleeve. A rotating shaft is rotatably mounted on the side wall of the rotating ring. An electric slide rail is fixedly connected to the end of the rotating shaft. The detection assembly also includes an electric slider two that slides laterally in the groove of the electric slide rail. An installation plate is mounted on the electric slider two. An embedding groove is opened on the surface of the installation plate. A multi-point array laser distance monitor can be detachably installed in the embedding groove. The installation plate is also equipped with a cleaning group for cleaning up the soil and stains that have not been removed from the outer wall of the underground wall. By precisely positioning the reference brackets set on the periphery, and using the lifting cleaning group to clean the walls that have not been cleaned, the detection deviation of the multi-point array laser distance monitor is reduced when the electric slide rail drives the multi-point array laser distance monitor to rise and fall. The electric slider 2 drives the mounting plate, multi-point array laser distance monitor and cleaning group to perform lateral cutting during the up and down movement stage, so as to perform multi-point detection on the outer wall of the wall. When one side is detected, the rotating ring drives the electric slide rail to rotate horizontally by 90 degrees, and the electric slide rail itself rotates 180 degrees to detect the other side of the external corner. The testing equipment also includes a calibration component for calibrating the initial positioning of the main support. The calibration component includes an isosceles trapezoidal plate vertically inserted into the inside corner of the wall. Two vertical round rods are fixed to the top of the isosceles trapezoidal plate and the top of the main support. The line connecting the centers of the two round rods at the top of the isosceles trapezoidal plate passes through the angle bisector of the outside corner of the wall, and the line connecting the centers of the two round rods at the top of the main support passes through the angle bisector of the balancer. The calibration component also includes two parallel tie rods, one of which is sleeved on the round rod at the top of the main support, and the other is sleeved on the round rod at the top of the isosceles trapezoidal plate. The two parallel tie rods are connected by an X-shaped scissor mechanism to ensure that the two parallel tie rods always remain parallel. A support component is installed on the side of the auxiliary support facing the wall.

2. The wall structure local deformation detection device according to claim 1, characterized in that: Two balancing components are provided, one on the top and one on the bottom. The balancing component includes a connecting sleeve that is slidably mounted on the main support and a sliding sleeve that is slidably mounted on two auxiliary supports. The connecting sleeve and the sliding sleeve at the same height are fixedly connected by a connecting rod, and the two connecting rods are perpendicular to each other.

3. The wall structure local deformation detection device according to claim 1, characterized in that: The cleaning assembly includes drive shafts rotatably mounted on the front and rear side walls of the mounting plate. Two inclined scrapers are fixedly connected to the two drive shafts. One inclined scraper is fixedly connected to the drive shaft, and the other inclined scraper is rotatably connected to the drive shaft. The included angle between the two inclined scrapers is fixed by a fastener. Guide plates are fixed on opposite sides of the two inclined scrapers. The guide plates guide the soil scraped off by the upper inclined scraper to both sides for discharge.

4. The wall structure local deformation detection device according to claim 3, characterized in that: During the downward movement of the electric sliding rail, only the inclined scraper on the lower side contacts the outer wall; during the upward movement of the electric sliding rail, only the inclined scraper on the upper side contacts the outer wall.

5. The wall structure local deformation detection device according to claim 3, characterized in that: An auxiliary component is provided at the end of the inclined scraper away from the drive shaft. The auxiliary component includes a strip groove at the end of the inclined scraper, a rotating shaft is rotatably installed in the strip groove, and rubber wheels are fixedly installed at both ends of the rotating shaft extending out of the strip groove. A strip plate is fixed at the opening of the strip groove, and several cleaning brushes are rotatably installed on the strip plate. The cleaning brushes are driven by a bevel gear set.

6. The wall structure local deformation detection device according to claim 1, characterized in that: The support component includes an electric slider slidably disposed within an auxiliary support. A support plate is fixed to the bottom of the electric slider slid. The support plate supports the electric slide rail. A receiving groove is formed on the upper surface of the support plate. A positioning block is slidably installed in the receiving groove. The positioning block consists of a wedge-shaped block with its inclined surface facing away from the auxiliary support and an L-shaped plate fixed to the lower surface of the wedge-shaped block. The vertical surface of the wedge-shaped block serves to limit the electric slide rail. The vertical section of the L-shaped plate slides through the bottom of the receiving groove, and the horizontal section of the L-shaped plate is connected to the bottom of the support plate by a spring.

7. The wall structure local deformation detection device according to claim 2, characterized in that: The connecting sleeve is a magnetic sleeve. Each of the two auxiliary supports has a magnetic blocking block on the side away from the wall. The two blocking blocks are set at different heights. One of the sliding sleeves of the upper balancing component has a clearance groove corresponding to the lower blocking block.

8. A method for detecting local deformation of a wall structure, performed using the detection equipment as described in claim 1, characterized in that, The steps include: S1. Position the main support and auxiliary support using an external laser collimator and laser angle meter, and put the balancing component on the outside of the main support and the two auxiliary supports so that the line connecting the main support and the two auxiliary supports is at a right angle. S2. Fine-tune the main support using the calibration components; S3. Calibrate the multi-point array laser distance monitor and adjust the angle of the inclined scraper so that the lower inclined scraper contacts the wall. The lifting sleeve moves down with the electric slide rail. The multi-point array laser distance monitor measures the distance at multiple points on the wall cleaned by the lower inclined scraper. When the lifting sleeve moves back up, the multi-point array laser distance monitor changes position laterally, and the upper inclined scraper contacts the wall. S4. After the inspection of one side wall of the external corner of the wall is completed, rotate the electric slide rail that has been moved up above the wall horizontally by 90 degrees, and rotate the electric slide rail itself by 180 degrees during the rotation, so that the end of the electric slide rail is supported and limited by another support. Inspect the other side wall of the external corner of the wall in the same way as the previous step.

Images