Laser flatness detection device for cap beam formwork production

Abstract

The present invention discloses a laser flatness detection device for the production of cap beam templates, which relates to the field of flatness detection technology and includes a base and a support seat. A fitting mechanism is provided at the bottom end of the connecting shell, and a conductive rubber is fixedly connected to the inner side of the fitting mechanism. A cap beam template is placed on the base below the conductive rubber, and an adjustment mechanism is fixedly connected to one end of the connecting shell. This detection method is not affected by the surface characteristics of the cap beam template, thereby improving the detection accuracy. At the same time, defects (such as voids, cracks, etc.) inside the cap beam template can also be detected, thereby facilitating the discovery of subtle hidden dangers that affect the performance of the cap beam template. At the same time, the provided fitting mechanism can promote the conductive rubber to fit tightly and firmly with the cap beam template, thereby effectively eliminating the contact gap, ensuring stable signal transmission during the measurement process, and greatly improving the accuracy of the potential difference measurement.

Description

Technical Field

[0001] The present invention relates to the technical field of flatness detection, in particular to a laser flatness detection device for producing cap beam templates. Background Art

[0002] The cap beam formwork is a mold used for cap beam casting construction in highway and railway bridge construction. The cap beam is a transverse load-bearing structure at the top of the pier column used to support the superstructure of the bridge (such as the bridge deck, beam body, etc.). In order to ensure the molding quality during the subsequent concrete pouring, ensure uniform stress on the structure, and avoid leakage, the flatness of the cap beam formwork needs to be tested during production.

[0003] At present, the flatness of the cap beam formwork is usually detected by laser scanning. The traditional laser scanning detection method is very sensitive to surface characteristics. The reflectivity, color, roughness, etc. of the template surface will affect the measurement results, resulting in errors in the measurement results. At the same time, the traditional laser scanning detection method can only detect the surface flatness, but cannot detect defects inside the template (such as voids, cracks, etc.), and cannot timely detect subtle hidden dangers that affect the performance of the cap beam formwork. Therefore, in response to the above problems, a laser flatness detection device for cap beam formwork production is proposed. Summary of the Invention

[0004] The purpose of the present invention is to provide a laser flatness detection device for cap beam formwork production to solve the problems in the background technology.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A laser flatness detection device for cap beam formwork production includes a base and a support base, the top of the base is fixedly connected to the support base, the inner side of the support base is fixedly connected to a third cylinder, the bottom end of the third cylinder is fixedly connected to a connecting shell, the bottom end of the connecting shell is provided with a fitting mechanism, the inner side of the fitting mechanism is fixedly connected to a conductive rubber, a cap beam formwork is placed on the base below the conductive rubber, one end of the connecting shell is fixedly connected to an adjustment mechanism, one end of the adjustment mechanism is fixedly connected to an output head, one end of the output head is fixedly connected to an optical fiber, the other end of the optical fiber is fixedly connected to a laser, one end of the laser is fixedly connected to a tensioning mechanism, and the tensioning mechanism is fixedly connected to the connecting shell, one end of the conductive rubber is fixedly connected to a wire, the other end of the wire is connected to a signal amplifier through an input end, the output end of the signal amplifier is connected to a potential difference meter through a transmission line, and one end of the support base is fixedly connected to a computer.

[0007] Preferably, the fitting mechanism includes a fixing plate fixedly connected to the connecting shell, the inner side of the fixing plate is slidably connected to a guide shaft, the bottom end of the guide shaft is fixedly connected to a guide frame, the outer side of the guide frame is fixedly connected to a sealing ring, and the guide frame is slidably connected to the connecting shell through the sealing ring, the conductive rubber is fixedly connected to the guide frame, a spring is provided on the outer side of the guide shaft, and the two ends of the spring are respectively fixedly connected to the fixing plate and the guide frame, the top of the connecting shell is fixedly connected to a pressure sensor and an intake pipe, and the outer side of the intake pipe is fixedly connected to a solenoid valve.

[0008] Preferably, the tensioning mechanism includes a connecting frame fixedly connected to the connecting shell, one end of the connecting frame is fixedly connected to the second cylinder, one end of the second cylinder is fixedly connected to the tensioning block, a tensioning shell adapted to the tensioning block is provided on one side of the tensioning block, and the tensioning shell is fixedly connected to the connecting frame, and the optical fiber passes between the tensioning shell and the tensioning block.

[0009] Preferably, the tensioning block is arranged in a semicircular shape, and the curvature of the tensioning block is greater than the bending curvature of the optical fiber.

[0010] Preferably, the adjusting mechanism includes a first cylinder fixedly connected to the connecting shell, the other end of the first cylinder is fixedly connected to a fixed frame, one end of the fixed frame is fixedly connected to a motor, the end of the main shaft of the motor is fixedly connected to a screw, and the screw is rotatably connected to the fixed frame, the outer side of the screw is spirally connected to a slider, and the slider is slidably connected to the fixed frame, and the slider is fixedly connected to the output head.

[0011] Preferably, the end of the fixing frame close to the motor is fixedly connected with a first photoelectric distance sensor and a second photoelectric distance sensor, and the axis of the first photoelectric distance sensor is parallel to the screw, and the axis of the second photoelectric distance sensor is perpendicular to the screw.

[0012] Preferably, the four sides of the connecting shell are convex, and a compensation groove is provided inside the convex.

[0013] Preferably, a scale line is provided on the top of the base.

[0014] Preferably, fixed blocks are provided on both sides of the vertical center line of the cap beam formwork, one end of the fixed block is fixedly connected to the fourth cylinder, the other end of the fourth cylinder is fixedly connected to a clamping plate, and the clamping plate is clamped together with the cap beam formwork.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. A laser flatness inspection device for cap beam formwork production utilizes a laser, optical fiber, output head, potential difference meter, and conductive rubber. This system focuses a high-energy pulsed laser on the cap beam formwork surface, instantaneously stimulating plasma and generating a local potential difference. As the laser energy penetrates deep into the formwork, defects such as voids, cracks, or inclusions can alter the laser's propagation characteristics. This not only affects the plasma generation process on the formwork surface but also causes the local potential difference signal to exhibit characteristics different from those found in a defect-free state. The conductive rubber evenly coats the formwork surface, transmitting the potential difference signal, which contains information about internal defects, to a differential signal amplifier. After RC filtering eliminates high-frequency noise, the signal is quantified by a high-precision potential difference meter. A computer synchronously controls the laser scanning path (via encoder feedback, with a timing error of <1ms). Data is processed in real time: baseline drift is removed, and then a pre-built calibration curve, which comprehensively considers the impact of internal defects (the ΔV-Δh relationship and the correlation between internal defect characteristics and potential difference changes), is used to convert the potential difference into a height value and identify internal defects. Finally, a test report is generated that covers the 3D topography of the template surface and includes parameters such as RMS roughness. At the same time, the location, type, severity and other information of internal defects are clearly marked in the report. This detection method is not affected by the surface characteristics of the cap beam template, which improves the accuracy of the detection. At the same time, it can also detect defects inside the cap beam template (such as voids, cracks, etc.), which is conducive to discovering subtle hidden dangers that affect the performance of the cap beam template.

[0017] 2. The laser flatness detection device used in the production of cap beam templates can promote the tight and stable fit of the conductive rubber and the cap beam template through the provided fitting mechanism, thereby effectively eliminating the contact gap, ensuring stable signal transmission during the measurement process, and greatly improving the accuracy of potential difference measurement.

[0018] 3. The laser flatness detection device for cap beam formwork production can make the output head irradiate the cap beam formwork in an orderly manner through the setting adjustment mechanism, thereby realizing the detection of the overall flatness of the cap beam formwork surface.

[0019] 4. The laser flatness detection device used in the production of cap beam formwork can be dynamically adjusted in real time through the set tensioning mechanism to ensure that the optical fiber is always in a safe bending arc range during the movement of the output head. It can effectively avoid excessive bending of the optical fiber due to the movement of the output head, reduce the loss and damage risk caused by excessive bending, and greatly improve the service life and working stability of the optical fiber. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Figure 1 This is a schematic diagram of the overall structure of the laser flatness detection device for cap beam formwork production of the present invention.

[0022] Figure 2 This is a schematic diagram of the installation structure of the laser of the laser flatness detection device for cap beam formwork production of the present invention.

[0023] Figure 3 This is a schematic diagram of the internal cross-sectional structure of the connection shell of the laser flatness detection device for cap beam formwork production of the present invention.

[0024] Figure 4 This is a schematic diagram of the installation structure of the conductive rubber of the laser flatness detection device for cap beam formwork production of the present invention.

[0025] Figure 5 This is a schematic diagram of the installation structure of the tensioning block of the laser flatness detection device for cap beam formwork production of the present invention.

[0026] Figure 6 The present invention is a laser flatness detection device for producing cap beam templates Figure 3 Schematic diagram of the structure at point A.

[0027] Figure 7 The present invention is a laser flatness detection device for producing cap beam templates Figure 4 Schematic diagram of the installation structure at location B.

[0028] Figure 8 This is a schematic diagram of the installation structure of the wires of the laser flatness detection device for cap beam formwork production of the present invention.

[0029] In the figure: 1, fitting mechanism; 101, guide frame; 102, sealing ring; 103, fixing plate; 104, guide shaft; 105, spring; 106, pressure sensor; 107, intake pipe; 108, solenoid valve;

[0030] 2. Adjustment mechanism; 201. First cylinder; 202. Fixing frame; 203. Motor; 204. Screw; 205. Slider; 206. First photoelectric distance sensor; 207. Second photoelectric distance sensor;

[0031] 3. Tensioning mechanism; 301. Connecting frame; 302. Second cylinder; 303. Tensioning block; 304. Tensioning shell;

[0032] 4. Laser; 5. Optical fiber; 6. Output head; 7. Potential difference meter; 8. Wire; 9. Base; 10. Support seat; 11. Third cylinder; 12. Connecting shell; 13. Compensation groove; 14. Scale line; 15. Fixed block; 16. Fourth cylinder; 17. Clamp; 18. Computer; 19. Conductive rubber; 20. Signal amplifier; 21. Cap beam template. DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with specific embodiments. The accompanying drawings are only for illustrative purposes and represent only schematic diagrams rather than actual drawings. They should not be understood as limiting the present invention. In order to better illustrate the specific embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted. Based on the specific embodiments of the present invention, all other specific embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, in the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention. In addition, the terms "first", "second" and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. The present invention will be further elaborated below in conjunction with specific embodiments.

[0035] Example

[0036] like Figures 1-8As shown, the laser flatness detection device for cap beam formwork production includes a base 9 and a support base 10. The top of the base 9 is fixedly connected to the support base 10. The inner side of the support base 10 is fixedly connected to a third cylinder 11. The bottom end of the third cylinder 11 is fixedly connected to a connecting shell 12. The bottom end of the connecting shell 12 is provided with a bonding mechanism 1. The third cylinder 11 is connected to an external air source and can move the bonding mechanism 1 vertically through the connecting shell 12, so that the bonding mechanism 1 is bonded to the cap beam formwork 21. The inner side of the bonding mechanism 1 is fixedly connected to a conductive rubber 19. An array of micropores is machined on the conductive rubber 19. The micropores have a diameter of 50μm-200μm and a spacing of 1mm, ensuring a laser transmittance of more than 90%. The conductive rubber 19 has a thickness between 0.5mm and 2mm. The micropore area is locally thinned to 0.1mm-0.3mm to ensure laser transmittance, and the resistance is less than 1Ω / sq. In this way, it can ensure that the laser irradiates the cap beam template 21 through the micropores and instantly excites the plasma to generate a local potential difference, and can also ensure that the conductive rubber 19 maintains the potential difference detection function. Below the conductive rubber 19 is the cap beam template 21 placed on the base 9, one end of the connecting shell 12 is fixedly connected to the adjustment mechanism 2, one end of the adjustment mechanism 2 is fixedly connected to the output head 6, one end of the output head 6 is fixedly connected to the optical fiber 5, and the other end of the optical fiber 5 is fixedly connected to the laser 4. The type of laser 4 can be selected according to the absorption characteristics of the material. For example, when detecting the cap beam template 21 made of metal, you can choose A YAG laser (1064nm) is used, which has high energy and can penetrate deep into the cap beam template 21. The laser 4 is irradiated to the surface of the cap beam template 21 through the optical fiber 5 and the output head 6. One end of the laser 4 is fixedly connected to the tensioning mechanism 3, and the tensioning mechanism 3 is fixedly connected to the connecting shell 12. One end of the conductive rubber 19 is fixedly connected to the wire 8. The wire 8 has low resistance (conductive material performance silver-plated copper wire> oxygen-free copper wire> aluminum wire), strong shielding (shielding layer is aluminum foil + braided mesh) and high temperature resistance (insulation layer is PTFE or PE material). For example, a silver-plated copper core (resistivity ≈ 1.6×10 -8 Ω·m) plus double-layer shielded wire, the other end of the wire 8 is connected to the signal amplifier 20 through the input end, the output end of the signal amplifier 20 is connected to the potential difference measuring instrument 7 through a transmission line, one end of the support base 10 is fixedly connected to the computer 18, the signal amplifier 20 can choose a differential amplifier or a programmable gain amplifier, the potential difference measuring instrument 7 is recommended to choose an ADC with 24-bit resolution and a sampling rate of ≥10kS / s, and at the same time, the output end of the potential difference measuring instrument 7 is connected to a signal acquisition card, which is used to convert the analog signal output by the potential difference measuring device into a digital signal and transmit it to the computer 18 for processing. The computer 18 needs to have sufficient computing power and storage space, and be installed with specialized data processing software, such as LabVIEW, MATLAB, etc., for real-time processing and analysis of the collected data, calculating the flatness, and generating a test report;

[0037] The system uses a laser 4, optical fiber 5, and output head 6 to focus light through an array of micropores formed in a conductive rubber 19 to illuminate the surface of the cap beam template 21, instantaneously exciting plasma and generating a local potential difference. As the laser energy penetrates deep into the cap beam template 21, if defects such as voids, cracks, or inclusions exist within the template 21, the propagation characteristics of the laser within the template 21 will change. This will not only affect the generation of plasma on the surface of the template 21 but also cause the local potential difference signal to exhibit characteristics different from those in a defect-free state. The conductive rubber 19 evenly covers the template surface, transmitting the potential difference signal containing internal defect information to a differential signal amplifier 20. After RC filtering to eliminate high-frequency noise, the signal is quantified by a high-precision potential difference meter 7. Computer 18 synchronously controls the laser scanning path (via encoder feedback, with a timing error of less than 1ms) and processes data in real time: first, baseline drift is removed, and then a pre-built calibration curve that comprehensively considers the impact of internal defects (the ΔV-Δh relationship and the correlation between internal defect characteristics and potential difference changes) is used. Computer 18 uses a convolutional neural network (CNN) to distinguish between surface flatness signals and internal defect characteristics, with a positioning accuracy of ±1mm, converting potential differences into height values ​​and identifying internal defect conditions. Finally, a test report is generated that includes a 3D topography of the template surface and parameters such as RMS roughness. The report also clearly marks information such as the location, type, and severity of internal defects. This detection method is not affected by the surface characteristics of the cap beam template 21, improving detection accuracy. It can also detect defects (such as cavities, cracks, etc.) within the cap beam template 21, thereby facilitating the discovery of subtle hidden dangers that affect the performance of the cap beam template 21.

[0038] As a further improvement of the present invention, Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, the fitting mechanism 1 includes a fixing plate 103 fixedly connected to the connecting shell 12, the inner side of the fixing plate 103 is slidably connected to a guide shaft 104, the bottom end of the guide shaft 104 is fixedly connected to a guide frame 101, the outer side of the guide frame 101 is fixedly connected to a sealing ring 102, and the guide frame 101 is slidably connected to the connecting shell 12 through the sealing ring 102. The sealing ring 102 is made of wear-resistant rubber material, such as nitrile rubber (NBR) or polyurethane (PU), and has both sealing and flexible guiding functions. Through the interference fit with the connecting shell 12 (interference amount 0.1-0.3mm), on the one hand, it can effectively ensure the sealing between the guide frame 101 and the connecting shell 12, prevent gas leakage, and maintain the connection shell 12. The internal air pressure is stable; on the other hand, with its own flexibility, the guide frame 101 can move relatively smoothly in the connecting shell 12 with the help of the sealing ring 102. The conductive rubber 19 is fixedly connected to the guide frame 101, and the bottom of the conductive rubber 19 protrudes from the bottom of the guide frame 101, so that the conductive rubber 19 and the cap beam template 21 can be closely fitted together. A spring 105 is provided on the outside of the guide shaft 104, and the two ends of the spring 105 are respectively fixedly connected to the fixed plate 103 and the guide frame 101. The top of the connecting shell 12 is fixedly connected to a pressure sensor 106 and an air intake pipe 107, and the outside of the air intake pipe 107 is fixedly connected to a solenoid valve 108. The size and shape of the conductive rubber 19 can be customized according to the cap beam template 21. When the conductive rubber 19 needs to be fitted to the surface of the cap beam template 21, the third cylinder 11 is started, and the conductive rubber 19 is driven to achieve initial contact with the cap beam template 21 through the connecting shell 12, the fixed plate 103, the guide shaft 104 and the guide frame 101. During this process, spring 105, with the aid of guide frame 101, applies downward force to conductive rubber 19, promoting a tighter fit between them. Subsequently, an external air source is introduced into the connection shell 12 via air inlet pipe 107. Driven by air pressure, the conductive rubber 19 further adheres to the surface of the cap beam template 21. Simultaneously, pressure sensor 106 monitors changes in air pressure within the connection shell 12 in real time. Working in conjunction with air inlet pipe 107 and solenoid valve 108, it dynamically regulates the air pressure inside the connection shell 12, ensuring that, under the action of air pressure, the conductive rubber 19 always adheres tightly to the cap beam template 21. This effectively eliminates contact gaps, ensures stable signal transmission during measurement, and significantly improves the accuracy of potential difference measurements.

[0039] As a further improvement of the present invention, Figure 2 and Figure 5As shown, the tensioning mechanism 3 includes a connecting frame 301 fixedly connected to the connecting shell 12. One end of the connecting frame 301 is fixedly connected to a second cylinder 302, which is connected to an external gas source. One end of the second cylinder 302 is fixedly connected to a tensioning block 303. A tensioning shell 304 that matches the tensioning block 303 is provided on one side of the tensioning block 303. The tensioning shell 304 is fixedly connected to the connecting frame 301. The optical fiber 5 passes between the tensioning shell 304 and the tensioning block 303. A sealing design is adopted between the connecting frame 301 and the tensioning shell 304 and the connecting shell 12, effectively preventing the gas inside the connecting shell 12 from leaking through the connecting frame 301 and the tensioning shell 304. When the output head 6 moves above the cap beam formwork 21, the second cylinder 302 drives the tensioning block 303 and the tensioning shell 304 to produce relative displacement. The tension block 303 plays a key role in regulating the movement of the optical fiber 5: when the optical fiber 5 is pulled, the tension block 303 moves away from the tensioning housing 304, causing the optical fiber 5 inside the connection frame 301 to gradually stretch outward. When the optical fiber 5 is relaxed, the tension block 303 moves closer to the tensioning housing 304, gradually retracting the slack portion of the optical fiber 5 back into the connection frame 301. This mechanism ensures that the optical fiber 5 always remains within a safe bending arc range during the movement of the output head 6. It effectively prevents excessive bending of the optical fiber 5 due to the movement of the output head 6, reduces the risk of loss and damage caused by excessive bending, and significantly improves the service life and operational stability of the optical fiber 5.

[0040] As a further improvement of the present invention, Figure 5 As shown, the tensioning block 303 is arranged in a semicircular shape, and the curvature of the tensioning block 303 is greater than the bending curvature of the optical fiber 5. This can ensure that when the tensioning block 303 carries the optical fiber 5 and is close to the tensioning shell 304, the optical fiber 5 always remains within an appropriate bending curvature range, thereby effectively avoiding performance degradation due to excessive bending and ensuring that the optical fiber 5 works stably and efficiently.

[0041] As a further improvement of the present invention, Figure 3 and Figure 5As shown, the adjustment mechanism 2 includes a first cylinder 201 fixedly connected to the connecting shell 12, the first cylinder 201 is connected to an external air source, the other end of the first cylinder 201 is fixedly connected to a fixed frame 202, one end of the fixed frame 202 is fixedly connected to a motor 203, the main shaft end of the motor 203 is fixedly connected to a screw 204, and the screw 204 is rotatably connected to the fixed frame 202, the outer side of the screw 204 is spirally connected to a slider 205, and the slider 205 is slidingly connected to the fixed frame 202, and the slider 205 is fixedly connected to the output head 6. The first cylinder 201 can move the output head 6 in the X-axis direction through the fixed frame 202, the screw 204 and the slider 205, and the motor 203 can move the output head 6 in the Y-axis direction through the screw 204 and the slider 205. Through the mutual cooperation of the first cylinder 201 and the motor 203, the output head 6 can realize full irradiation of the surface of the cap beam template 21, thereby realizing the detection of the surface flatness and internal defects of the cap beam template 21.

[0042] As a further improvement of the present invention, Figure 5 As shown, the end of the fixed frame 202 near the motor 203 is fixedly connected to a first photoelectric distance sensor 206 and a second photoelectric distance sensor 207, respectively. The axis of the first photoelectric distance sensor 206 is parallel to the screw 204, and the axis of the second photoelectric distance sensor 207 is perpendicular to the screw 204. Before measuring the surface flatness of the cap beam formwork 21, the first cylinder 201 is activated and the first and second photoelectric distance sensors 206, 207 are moved to the corners of the connecting shell 12 via the fixed frame 202. The cooperative working mechanism of the first and second photoelectric distance sensors 206, 207, and the second cylinder 302 is explained here using the second photoelectric distance sensor 207 as an example: When the second photoelectric distance sensor 207 is in place, it measures the distance between the inner walls of the connecting shell 12, denoted as X. As the output head 6 moves toward the other side of the connecting shell 12 along the axis of the second photoelectric distance sensor 207, the length of the optical fiber 5 between the output head 6 and the connecting frame 301 gradually decreases as the output head 6 reaches halfway to the length X. At this point, the second photoelectric distance sensor 207 sends a signal to the control program in computer 18, which then controls the second air cylinder 302, driving the tensioning block 303 gradually closer to the tensioning housing 304, gradually retracting the slack optical fiber 5 back into the connection frame 301. When the output head 6 continues to move past halfway through the length X, it gradually tightens the optical fiber 5. At this point, the second photoelectric distance sensor 207 again sends a signal to the control program in computer 18, which in turn controls the second air cylinder 302, driving the tensioning block 303 gradually away from the tensioning housing 304, gradually extending the optical fiber 5 inside the connection frame 301 outward. The first photoelectric distance sensor 206 operates in the same manner as the second photoelectric distance sensor 207 and will not be repeated here.

[0043] As a further improvement of the present invention, Figure 1 and Figure 3 As shown, the connecting shell 12 is provided with a raised configuration on all sides, and a compensation groove 13 is provided inside the raised configuration. The compensation groove 13 can provide additional moving space for the fixed frame 202, the motor 203, the first photoelectric distance sensor 206 and the second photoelectric distance sensor 207, ensuring that the light output by the output head 6 can reach the edge of the cap beam template 21.

[0044] As a further improvement of the present invention, Figure 1 As shown, a scale line 14 is provided on the top of the base 9. With the help of the scale line 14, the staff can accurately locate the specific locations of defects such as unevenness on the surface of the cap beam template 21 based on the position information of these defects marked in the inspection report.

[0045] As a further improvement of the present invention, Figure 1 and Figure 3 As shown, a fixing block 15 is provided on both sides of the vertical center line of the cap beam template 21. One end of the fixing block 15 is fixedly connected to the fourth cylinder 16, which is connected to the external air source. The other end of the fourth cylinder 16 is fixedly connected to the clamping plate 17, and the clamping plate 17 is clamped together with the cap beam template 21. After the cap beam template 21 is accurately placed directly under the conductive rubber 19, the fourth cylinder 16 is started to drive the clamping plate 17 to move and tightly clamp the cap beam template 21. In this way, the cap beam template 21 is firmly fixed, effectively ensuring that the cap beam template 21 always remains stable during the detection process, providing a solid guarantee for the accuracy of the detection results.

[0046] The above is a preferred embodiment of the present invention. The basic principles, main features and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only illustrate the principles of the present invention. Without departing from the scope of protection of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A laser flatness detection device for cap beam template production, comprising a base (9) and a support base (10), characterized in that: The top of the base (9) is fixedly connected to a support base (10), the inner side of the support base (10) is fixedly connected to a third cylinder (11), the bottom end of the third cylinder (11) is fixedly connected to a connection shell (12), the bottom end of the connection shell (12) is provided with a fitting mechanism (1), the inner side of the fitting mechanism (1) is fixedly connected to a conductive rubber (19), an array of micropores is machined on the conductive rubber (19), and a cap beam template (21) is placed on the base (9) below the conductive rubber (19), one end of the connection shell (12) is fixedly connected to an adjustment mechanism (2), one end of the adjustment mechanism (2) is fixedly connected to the bottom of the connection shell (12). An output head (6) is fixedly connected, one end of the output head (6) is fixedly connected to an optical fiber (5), the other end of the optical fiber (5) is fixedly connected to a laser (4), one end of the laser (4) is fixedly connected to a tensioning mechanism (3), and the tensioning mechanism (3) is fixedly connected to a connecting shell (12), one end of the conductive rubber (19) is fixedly connected to a wire (8), the other end of the wire (8) is connected to a signal amplifier (20) via an input end, the output end of the signal amplifier (20) is connected to a potential difference measuring instrument (7) via a transmission line, and one end of the support base (10) is fixedly connected to a computer (18).

2. The laser flatness detection device for cap beam formwork production according to claim 1 is characterized in that: The fitting mechanism (1) comprises a fixing plate (103) fixedly connected to the connecting shell (12); a guide shaft (104) is slidably connected to the inner side of the fixing plate (103); a guide frame (101) is fixedly connected to the bottom end of the guide shaft (104); a sealing ring (102) is fixedly connected to the outer side of the guide frame (101); and the guide frame (101) is slidably connected to the connecting shell (12) via the sealing ring (102); the conductive rubber (19) is fixedly connected to the guide frame (101); a spring (105) is provided on the outer side of the guide shaft (104), and the two ends of the spring (105) are fixedly connected to the fixing plate (103) and the guide frame (101), respectively; a pressure sensor (106) and an air intake pipe (107) are fixedly connected to the top end of the connecting shell (12); and a solenoid valve (108) is fixedly connected to the outer side of the air intake pipe (107).

3. The laser flatness detection device for cap beam formwork production according to claim 1 is characterized in that: The tensioning mechanism (3) comprises a connecting frame (301) fixedly connected to the connecting shell (12); one end of the connecting frame (301) is fixedly connected to a second cylinder (302); one end of the second cylinder (302) is fixedly connected to a tensioning block (303); a tensioning shell (304) adapted to the tensioning block (303) is provided on one side of the tensioning block (303); the tensioning shell (304) is fixedly connected to the connecting frame (301); and the optical fiber (5) passes between the tensioning shell (304) and the tensioning block (303).

4. The laser flatness detection device for cap beam formwork production according to claim 3 is characterized in that: The tensioning block (303) is arranged in a semicircular shape, and the curvature of the tensioning block (303) is greater than the bending curvature of the optical fiber (5).

5. The laser flatness detection device for cap beam formwork production according to claim 1 is characterized in that: The regulating mechanism (2) comprises a first cylinder (201) fixedly connected to the connecting shell (12); the other end of the first cylinder (201) is fixedly connected to a fixing frame (202); one end of the fixing frame (202) is fixedly connected to a motor (203); a main shaft end of the motor (203) is fixedly connected to a screw rod (204), and the screw rod (204) is rotatably connected to the fixing frame (202); the outer side of the screw rod (204) is spirally connected to a slider (205), and the slider (205) is slidably connected to the fixing frame (202); and the slider (205) is fixedly connected to the output head (6).

6. The laser flatness detection device for cap beam formwork production according to claim 5, characterized in that: A first photoelectric distance sensor (206) and a second photoelectric distance sensor (207) are fixedly connected to the end of the fixing frame (202) close to the motor (203), respectively, and the axis of the first photoelectric distance sensor (206) is parallel to the screw (204), and the axis of the second photoelectric distance sensor (207) is perpendicular to the screw (204).

7. The laser flatness detection device for cap beam formwork production according to claim 1, characterized in that: The connection shell (12) is provided with convex shapes on all sides, and a compensation groove (13) is provided inside the convex shapes.

8. The laser flatness detection device for cap beam formwork production according to claim 1, characterized in that: A scale line (14) is provided on the top of the base (9).

9. The laser flatness detection device for cap beam formwork production according to claim 1, characterized in that: A fixed block (15) is provided on both sides of the vertical center line of the cap beam template (21), one end of the fixed block (15) is fixedly connected to the fourth cylinder (16), and the other end of the fourth cylinder (16) is fixedly connected to the clamping plate (17), and the clamping plate (17) is clamped together with the cap beam template (21).

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