Inspection and reinforcement integrated device and method for metal roof

Abstract

The invention provides a metal roof inspection and reinforcement integrated device and method, and belongs to the technical field of building detection. The device comprises a walking mechanism, a pressing mechanism, an excitation generation mechanism, a sound acquisition module, a positioning module, a contour scanning module, a signal transmission module, a data processing module and a data storage module. The inspection and reinforcement integrated device for the metal roof is adopted in the method. Compression reinforcement and roof detection can be combined into a whole, a long-term health record of the roof panel is established, tracking and evaluation are facilitated, and the service life of the metal roof panel is scientifically and quantitatively given; sound recognition and contour scanning are combined, so that the accuracy and reliability of roof panel node damage recognition are improved; the health state of the metal roofing board is obtained in a routing inspection mode, the roofing does not need to be transformed, routing inspection can be carried out flexibly and flexibly according to needs, wide adaptability and economical efficiency are achieved, and the obtained detection result is visual.

Description

Technical Field

[0001] The present invention belongs to the technical field of building inspection, and more specifically, relates to an integrated device and method for metal roof inspection and reinforcement. Background Art

[0002] Metal roofs are widely used in public buildings such as railway stations, stadiums, and airports due to their strong spatial adaptability, beautiful appearance, and high degree of assembly. However, due to the particularity of mechanical connection between the roof and the main structure, some problems have been exposed during the service of the roof. The connection will loosen under the long-term action of wind loads, and in severe cases, a large area will loosen, resulting in wind-lifting accidents. To avoid wind-lifting, the most effective means is to use inspection and monitoring technology to find out the connection status of the metal roof in advance and reinforce it in time.

[0003] However, the connection of metal roofs is complex and extremely hidden, and it is difficult to evaluate the connection with existing means. The main manifestations are: (1) Metal roofs are mostly connected to purlins by bite, which is affected by manual operation and the environment, and the connection effect is unstable. There is currently a lack of scientific definition of the quality of connection construction; (2) The long-term effect of wind loads causes changes in the initial bite state, and there is currently a lack of effective means to quantify this change; (3) The number of roof panel connections is huge, and the workload of manual inspection is huge. In addition, since the above changes are small and difficult to distinguish with the naked eye, it is difficult to carry out conventional detection methods. Due to these factors, the supervision of the service status of metal roofs is the weakest link in the operation and maintenance management of large public buildings.

[0004] To this end, some methods specifically suitable for metal roof inspection and monitoring have been proposed in China. However, due to the characteristics of roof wind damage, which are initial damage to individual connections, local loosening, and then large-scale damage, existing devices and methods have the problem of large amount of installation work and difficulty in implementation, or have problems of poor sensitivity and insufficient accuracy. In short, the problem of detecting and evaluating the service status of metal roofs is difficult to solve. Summary of the invention

[0005] The purpose of the present invention is to provide an integrated device and method for metal roof inspection and reinforcement, so as to solve the technical problems that are difficult to solve in the prior art in detecting and evaluating the service status of metal roofs.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide an integrated device for inspection and reinforcement of metal roofs, including a walking mechanism, a clamping mechanism, a vibration generating mechanism, a sound collection module, a positioning module, a contour scanning module and a signal transmission module, wherein the walking mechanism is used to walk on the metal roof; the clamping mechanism is arranged on the walking mechanism, and is used to clamp the plate ribs of the metal roof; the vibration generating mechanism is arranged on the walking mechanism, and is used to apply vibration to the plate surface of the metal roof; the sound collection module is arranged on the walking mechanism, and is used to collect the sound of the metal roof; the positioning module is arranged on the walking mechanism, and is used to locate the position of the walking mechanism; the contour scanning module is arranged on the walking mechanism, and is used to scan the outer contour of the metal roof; the signal transmission module is electrically connected to the sound collection module, the positioning module and the contour scanning module respectively, and is used to transmit signals to the outside.

[0007] In combination with the above technical solution, in a possible implementation method, the walking mechanism includes a frame, a power unit and a plurality of action wheels, the power unit is arranged on the frame; the plurality of action wheels are rotatably arranged on the frame and are transmission-connected to the power unit; the vibration generating mechanism is transmission-connected to the power unit to generate vibration under the drive of the power unit.

[0008] In combination with the above technical scheme, in a possible implementation method, the excitation generating mechanism includes a shell, a gear plate, a lever, a follower gear rod, a firing rod, an elastic member, a firing rod fixer and a ejection switch, wherein the shell is connected to the frame; the gear plate is rotatably arranged on the frame and is transmission-connected to the power device, and a toothless section is provided on the gear plate; the follower gear rod is slidably arranged in the shell and cooperates with the gear plate to slide under the drive of the gear plate; the ejection rod is slidably arranged in the shell and is connected to the follower gear rod; the elastic member is respectively connected to the follower gear rod and the shell, and is used to provide elastic force for the follower gear rod and the ejection rod; the ejection rod fixer is arranged on one side of the shell, and is used to temporarily fix the follower gear rod when the follower gear rod slides to one side of the shell; the ejection switch is arranged on the shell and is connected to the ejection rod fixer; the lever is arranged on the gear plate, and is used to toggle and trigger the ejection switch, so that the ejection rod fixer releases the follower gear rod, so that the ejection rod hits the metal roof.

[0009] In combination with the above technical solution, in a possible implementation, the clamping mechanism includes a plurality of clamping rollers rotatably disposed on a frame, and the plurality of clamping rollers are used to be located on both sides of the plate rib to clamp the plate rib.

[0010] In combination with the above technical solution, in a possible implementation, there are two contour scanning modules, which are respectively located on both sides of the frame; each contour scanning module includes an adjustment bracket, a mounting seat and a line laser contour scanner, one end of the adjustment bracket is connected to the frame; the mounting seat is connected to the other end of the adjustment bracket; the line laser contour scanner is arranged on the mounting seat so that the emitted laser can be arranged linearly on the metal roof.

[0011] In combination with the above technical solution, in a possible implementation method, the metal roof inspection and reinforcement integrated device also includes a data processing module and a data storage module. The data processing module is electrically connected to the signal transmission module to process data signals; the data storage module is electrically connected to the data processing module to store data signals.

[0012] To achieve the above object, the present invention also adopts a technical solution of providing a metal roof inspection and reinforcement integrated method, using the above metal roof inspection and reinforcement integrated device, comprising the following steps: S100, driving the walking mechanism to move forward along the plate ribs, and pressing the plate ribs by the pressing mechanism, while the excitation generating mechanism periodically applies excitation to the plate surface of the metal roof, so that the plate surface of the metal roof makes a sound due to the high-frequency vibration; S200, collecting the sound information collected by the sound collection module, the location information collected by the positioning module, and the metal roof contour information scanned by the contour scanning module; S300, analyzing and processing the sound information collected by the sound collection module and the position information collected by the positioning module, obtaining the vibration frequency and damping distribution of the metal roof, and comparing them with the existing vibration frequency and damping distribution data to determine whether there is a support under the metal roof in the area; S400, using the metal roof profile information scanned by the profile scanning module and the position information collected by the positioning module to generate a scanning point cloud, fitting and reconstructing the scanning point cloud to generate a metal roof profile, and comparing it with the existing metal roof profile to evaluate the metal roof node bite state; S500: Based on the vibration frequency and damping distribution of the metal roof obtained in S300 and S400 and the generated metal roof profile, a service status evaluation of the metal roof bite node is given.

[0013] In combination with the above technical solution, in a possible implementation method, in S400, a metal roof contour is generated and recorded in a metal roof contour file; for a metal roof scanned for the first time, the generated metal roof contour is compared with the contour of a test metal roof, and the bite state of the metal roof node is evaluated by the change of the contour; for a metal roof scanned again, the roof panel contour is compared with the contour of the test metal roof and the metal roof contour files of previous scans, and while the bite state of the metal roof node is evaluated, a trend of changes in the bite state of the metal roof node is given.

[0014] In combination with the above technical solution, in a possible implementation method, in S400, after the contour point cloud is collected, the B-spline curve is used to fit the metal roof contour, and the opening spacing, contour outer width, contour outer height, and contour outer area are calculated. The above parameters are compared with the test statistical values ​​to determine the service life value of the roof panel.

[0015] In combination with the above technical solution, in a possible implementation, in S300, the step of analyzing and processing the sound information collected by the sound collection module includes: According to the period of the excitation mechanism, the signal is intercepted, and the intercepted sound signal is analyzed in time and frequency to calculate the scale spectrum of the sound signal q. , , in, is the wavelet function used in time-frequency analysis, * indicates convolution calculation, t is time, and s is scale; After that, two scales s1 and s2 are selected near the estimated metal roof vibration frequency, and the logarithms of the scale spectra corresponding to the two scales are calculated. The slope D of the logarithmic curve of the scale spectrum is used to obtain the vibration frequency f and damping coefficient of the metal roof. : , , in, and is the time-frequency analysis parameter.

[0016] In combination with the above technical solution, in a possible implementation method, the parameters such as opening spacing, contour outer width, contour outer height, contour outer area obtained in S400 are combined with the frequency and damping parameters of different orders obtained in S300, and the position information collected by the positioning module to construct a spatial distribution sequence of various parameters on the roof and statistically analyze the distribution of various parameters on the roof, realize parameter outlier detection, give the abnormal parameter distribution area, and evaluate and warn the overall service condition of the roof in combination with the test statistical values.

[0017] The beneficial effect of the integrated inspection and reinforcement device for metal roofs provided by the present invention is that, compared with the prior art, the present invention can compress the metal roof through the walking mechanism and the clamping mechanism while restoring the smaller deformation on the metal roof, and apply vibration to the metal roof through the vibration generating mechanism, so that the metal roof makes a sound, and the sound is collected by the sound collection module. Since the sound generated is different due to whether there is a support under the metal roof, the connection state of the metal roof and the purlin can be judged by the outer contour of the metal roof obtained by the sound and contour scanning module, and the position of the poor connection state can be determined by the positioning module, which is convenient for later maintenance, thereby realizing integrated inspection and reinforcement of the metal roof, which can save manpower, reduce the risk of operation, and facilitate more accurate determination of the state of the metal roof; and the data obtained by the detection can be archived to establish a long-term health file of the metal roof, which is convenient for tracking and evaluation, so as to scientifically and quantitatively give the service life of the metal roof panel.

[0018] The beneficial effects of the integrated inspection and reinforcement method for metal roofs provided by the present invention are as follows: compared with the prior art, the present invention can integrate compression reinforcement and roof inspection into one during daily inspections, establish a long-term health record of the roof panels, facilitate tracking and evaluation, and scientifically and quantitatively provide the service life of the metal roof panels; and by combining sound recognition and contour scanning, it is determined whether there are supports in hidden places, and the bite state of the nodes is identified by the contour morphology of the metal roof panels, thereby improving the accuracy and reliability of roof panel node damage identification; the health state of the metal roof panels is obtained by inspection, and no modification of the roof is required. The inspection can be flexibly and maneuverably carried out according to needs, and it has wide adaptability and economy, and the results obtained by the inspection are also intuitive. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 A schematic diagram of the structure of a metal roof inspection and reinforcement integrated device provided in an embodiment of the present invention; Figure 2 A schematic diagram of the structure of the walking mechanism and the clamping mechanism of the metal roof inspection and reinforcement integrated device provided by an embodiment of the present invention; Figure 3 A schematic diagram of the partial structure of the excitation generating mechanism of the metal roof inspection and reinforcement integrated device provided in an embodiment of the present invention; Figure 4 A schematic diagram of the structure of the gear plate and lever portion of the excitation generating mechanism of the metal roof inspection and reinforcement integrated device provided in an embodiment of the present invention; Figure 5 In the integrated method for metal roof inspection and reinforcement provided by the embodiment of the present invention, the contour information obtained by scanning with the contour scanning module is used to generate a scanning point cloud, and the scanning point cloud is fitted and reconstructed to generate a schematic diagram of the metal roof contour.

[0021] Among them, the reference numerals in the figures are as follows: 10. Traveling mechanism; 11. Frame; 12. Power device; 13. Traveling wheels; 20. Clamping mechanism; 30. Excitation generating mechanism; 31. Housing; 32. Toothed disc; 33. Pulley; 34. Follower gear rod; 35. Ejection rod; 36. Elastic member; 37. Ejection rod holder; 38. Ejection switch; 40. Sound collection module; 50. Positioning module; 60. contour scanning module; 61. adjustment bracket; 62. mounting base; 63. line laser contour scanner; 70. Metal roof; 71. Plate rib; 81. Contour cloud points; 82. Contour perimeter width; 83. Opening spacing; 84. Contour perimeter height; 85. Fitting curve; 86. Contour perimeter area. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of this application.

[0023] It should be further explained that the drawings and implementation modes of the present invention mainly describe the concept of the present invention. On the basis of this concept, the specific forms and settings of some connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, on the premise that those skilled in the art understand the concept of the present invention, those skilled in the art can implement the above-mentioned specific forms and settings in a well-known manner.

[0024] When an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.

[0025] The directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself. The directions or positional relationships indicated by the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the drawings and are only for the convenience of describing the present invention and simplifying the description. They 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, and therefore should not be understood as limiting the present invention.

[0026] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, and the spatially relative descriptions used here are interpreted accordingly.

[0027] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, and "several" means one or more, unless otherwise clearly and specifically defined.

[0028] The metal roof inspection and reinforcement integrated device provided by the present invention is now described.

[0029] like Figure 1 and Figure 2 As shown, the first embodiment of the present invention provides an integrated device for metal roof inspection and reinforcement, including a walking mechanism 10, a pressing mechanism 20, an excitation generating mechanism 30, a sound collection module 40, a positioning module 50, a contour scanning module 60 and a signal transmission module, wherein the walking mechanism 10 is used for walking on the metal roof 70; the pressing mechanism 20 is arranged on the walking mechanism 10, and is used for pressing the plate rib 71 of the metal roof 70; the excitation generating mechanism 30 is arranged on the walking mechanism 10, and is used for applying excitation to the plate surface of the metal roof 70; the sound collection module 40 is arranged on the walking mechanism The mechanism 10 is used to collect the sound of the metal roof 70; the positioning module 50 is arranged on the walking mechanism 10, and is used to locate the position of the walking mechanism 10; the contour scanning module 60 is arranged on the walking mechanism 10, and is used to scan the outer contour of the metal roof 70; the signal transmission module is electrically connected to the sound collection module 40, the positioning module 50 and the contour scanning module 60 respectively, and is used to transmit signals to the outside to process the signals collected by the sound collection module 40, the positioning module 50 and the contour scanning module 60, so as to determine the connection status of the metal roof 70 and the purlin.

[0030] Compared with the prior art, the metal roof inspection and reinforcement integrated device provided in the present embodiment can compress the bite nodes of the metal roof 70 through the walking mechanism 10 and the pressing mechanism 20 while restoring the smaller deformation on the metal roof 70, and at the same time play the role of vibration isolation and vibration resistance for the excitation, and apply excitation to the metal roof 70 through the excitation generating mechanism 30, so that the metal roof 70 makes a sound, and the sound is collected by the sound collecting module 40. Due to whether there is a support under the metal roof 70, the sound generated is different, so the connection state of the metal roof 70 and the purlin can be judged by the outer contour of the metal roof 70 obtained by the sound and contour scanning module 60, and the position of the poor connection state can be determined by the positioning module 50, which is convenient for later maintenance, thereby realizing the integrated inspection and reinforcement of the metal roof, which can save manpower, reduce the danger of operation, and facilitate more accurate determination of the state of the metal roof 70; and the data obtained by the detection can be archived to establish a long-term health file of the metal roof 70, which is convenient for tracking and evaluation, so as to scientifically and quantitatively give the service life of the metal roof panel.

[0031] like Figures 1 to 4 As shown, a specific implementation mode provided by the present invention based on the first implementation mode is as follows: The walking mechanism 10 includes a frame 11, a power unit 12 and a plurality of moving wheels 13. The power unit 12 is arranged on the frame 11; the plurality of moving wheels 13 are rotatably arranged on the frame 11 and are transmission-connected to the power unit 12; the vibration generating mechanism 30 is transmission-connected to the power unit 12 to generate vibration under the drive of the power unit 12.

[0032] The excitation generating mechanism 30 includes a housing 31, a toothed disc 32, a lever 33, a follower gear rod 34, a firing rod 35, an elastic member 36, a firing rod holder 37 and a firing switch 38. The housing 31 is connected to the vehicle frame 11; the toothed disc 32 is rotatably disposed on the vehicle frame 11 and is transmission-connected to the power device 12, and a toothless section is provided on the toothed disc 32; the follower gear rod 34 is slidably disposed in the housing 31 and cooperates with the toothed disc 32 to slide under the drive of the toothed disc 32; the firing rod 35 is slidably disposed in the housing 31 and is connected to the follower gear rod 34; the elastic member 36 is actuated by a plurality of springs; and the springs are connected to the springs. Component 36 is respectively connected to the follower gear rod 34 and the housing 31, and is used to provide elastic force for the follower gear rod 34 and the impact rod 35; the impact rod fixer 37 is arranged on one side of the housing 31, and is used to temporarily fix the follower gear rod 34 when the follower gear rod 34 slides to one side of the housing 31; the ejection switch 38 is arranged on the housing 31 and is connected to the ejection rod fixer 37; the lever 33 is arranged on the gear disc 32, and is used to activate and trigger the ejection switch 38, so that the ejection rod fixer 37 releases the follower gear rod 34, so that the ejection rod 35 hits the metal roof 70.

[0033] The clamping mechanism 20 includes a plurality of clamping rollers rotatably disposed on the frame 11 , and the plurality of clamping rollers are used to be located on both sides of the plate rib 71 to clamp the plate rib 71 .

[0034] There are two contour scanning modules 60, which are respectively located on both sides of the frame 11; each contour scanning module 60 includes an adjustment bracket 61, a mounting seat 62 and a line laser contour scanner 63, one end of the adjustment bracket 61 is connected to the frame 11; the mounting seat 62 is connected to the other end of the adjustment bracket 61; the line laser contour scanner 63 is arranged on the mounting seat 62, so that the emitted laser can be arranged linearly on the metal roof 70.

[0035] The metal roof inspection and reinforcement integrated device also includes a data processing module and a data storage module. The data processing module is electrically connected to the signal transmission module to process data signals; the data storage module is electrically connected to the data processing module to store data signals.

[0036] The present invention generates vibration by knocking and scans the outer contour of the roof panel to obtain the missing support of the lower part of the metal roof 70 and the deformation of the roof panel contour. The vibration generating mechanism 30 and the sound collection module are fixed at the front end, the walking mechanism and the pressing mechanism are in the middle, and the contour scanning module is fixed at the rear end. While walking, the walking mechanism and the pressing mechanism press the bite node of the metal roof panel, and at the same time, they play a role of vibration isolation and vibration resistance for the vibration generated by the knocking of the front end, creating stable conditions for the contour scanning module to work. In the sound signal processing, the high-frequency component of the free vibration of the metal plate is extracted by the time-frequency analysis method, and the vibration frequency and damping distribution of the metal roof are obtained while shielding the noise. The contact state between the metal plate and the support is judged based on this, and it is judged whether there is a support under the metal roof. Considering that the shape of the metal plate will change after long-term service, the opening of the bite node becomes larger, which affects the bearing capacity of the node, a line laser is used to scan the contour, and it is compared with the test contour. The service life of the roof is judged by the contour parameters, and a contour file is established for long-term tracking and prediction of the remaining life.

[0037] Based on the same inventive concept, the second embodiment of the present invention provides an integrated method for metal roof inspection and reinforcement, comprising the following steps: S100, driving the walking mechanism 10 to move forward along the plate rib 71, and pressing the plate rib 71 through the pressing mechanism 20, while the excitation generating mechanism 30 periodically applies excitation to the plate surface of the metal roof 70, so that the plate surface of the metal roof 70 makes a sound due to the high-frequency vibration; S200, collecting the sound information collected by the sound collection module 40, the position information collected by the positioning module 50, and the contour information of the metal roof 70 scanned by the contour scanning module 60; S300, analyzing and processing the sound information collected by the sound collection module 40 and the position information collected by the positioning module 50, obtaining the vibration frequency and damping distribution of the metal roof, and comparing them with the existing vibration frequency and damping distribution data, to determine whether there is a support under the metal roof 70 in the area; specifically, if the difference between the two is within a first preset range, it indicates that there is a support under the metal roof 70 in the area; if the difference between the two exceeds the first preset range, it indicates that there is no support under the metal roof 70 in the area, and feedback is given on the position information of the area; S400, using the contour information of the metal roof 70 scanned by the contour scanning module 60 and the position information collected by the positioning module 50, a scanning point cloud is generated, and the scanning point cloud is fitted and reconstructed to generate the metal roof contour, such as Figure 5 As shown, and compared with the existing metal roof profile, the metal roof node bite state is evaluated; specifically, if the difference between the two is within the second preset range, it indicates that the metal roof profile in the area meets the requirements; if the difference between the two exceeds the second preset range, it indicates that the metal roof profile in the area does not meet the requirements, and the location information of the area is fed back; S500, based on the vibration frequency and damping distribution of the metal roof obtained in S300 and S400, the generated metal roof profile and the position information collected by the positioning module, wherein the metal roof profile includes parameters such as opening spacing, profile outer width, profile outer height, and profile outer area, construct a spatial distribution sequence of various parameters on the roof and count the distribution of various parameters on the roof, implement parameter outlier detection, give the parameter distribution abnormal area, and evaluate the overall service status of the roof and issue an early warning in combination with the test statistical value; Specifically, the spatial distribution sequence of the above-mentioned parameters on the roof is constructed and the distribution of various parameters on the roof is counted. By calculating the mutual correlation coefficients of the distribution sequences of various parameters, the detection of abnormal parameters can be realized. The areas with consistent correlation and large differences between the collected parameters and the test statistical values ​​are judged as high-risk areas for local damage, and timely warnings are given. The overall service status of the metal roof is evaluated according to the ratio of the collected parameters to the test statistical values ​​and the distribution size of the high-risk areas for local damage.

[0038] In S100, the clamping mechanism can be replaced and its position can be adjusted according to the type of metal roof panel, so that the clamping mechanism is in close contact with the plate ribs of the metal roof; during the movement, the positioning module records the positioning in real time and records the spatial position of the device; the position of the impact rod in the excitation generating mechanism 30 is adjusted so that the impact rod is in close contact with the plate ribs, and the impact rod can periodically strike the plate ribs during the movement of the device to generate appropriate periodic vibrations.

[0039] Among them, the test method for determining the close contact between the impact rod and the plate rib and the amplitude of the periodic vibration generated includes: S101. Sample preparation: Build a small area sample according to the actual installation situation of the metal roof. The bite nodes of the metal roof panels are considered with and without supports respectively; S102, vibration test: the device is placed on the metal roof panel sample, and after the walking and pressing components press the metal roof panel ribs, the degree of close contact between the spring rod and the plate ribs is adjusted, and the plate ribs are hit to generate vibration; the vibration displacement is tested by a laser vibrometer, and the hitting sound signal is collected at the same time, and the correlation analysis of the vibration displacement signal and the sound signal is performed; the contact relationship between the metal roof panel and the plate, and the plate and the support is determined by the vibration displacement signal, and the close contact degree and the striking force of the spring rod and the metal roof panel ribs are determined according to the contact relationship, and the threshold of the corresponding sound signal is determined by the established correlation relationship between the vibration displacement signal and the sound signal; S103. Practical application: By judging whether the sound signal of the test meets the test threshold, it is determined whether the close fit between the impact rod and the plate rib and the impact force are appropriate.

[0040] In S300, the test method for the support status of the metal roof panel is as follows: in the metal roof sample constructed as above, different positions are knocked to collect sound signals, the frequency distribution of the metal roof panel is determined by time-frequency analysis, two sets of data are extracted near the vibration frequency of the metal roof panel, and the vibration frequency and damping coefficient of the metal roof panel are obtained by difference method. Through multiple tests and statistical analysis, the vibration frequency and damping coefficient distribution of the metal roof panel with or without support are determined.

[0041] In S300, the step of analyzing and processing the sound information collected by the sound collection module 40 includes: The signal is intercepted according to the period of the excitation generating mechanism 30, and the intercepted sound signal is subjected to time-frequency analysis to calculate the scale spectrum of the sound signal q. , , in, is the wavelet function used in time-frequency analysis, * indicates convolution calculation, t is time, and s is scale; After that, two scales s1 and s2 are selected near the estimated metal roof vibration frequency, and the logarithms of the scale spectra corresponding to the two scales are calculated. The slope D of the logarithmic curve of the scale spectrum is used to obtain the vibration frequency f and damping coefficient of the metal roof. : , , in, and is the time-frequency analysis parameter.

[0042] In S400, the metal roof profile is generated and recorded in the metal roof profile file; for the metal roof scanned for the first time, the generated metal roof profile is compared with the profile of the test metal roof, and the bite state of the metal roof node is evaluated through the change of the profile; for the metal roof scanned again, the roof panel profile is compared with the profile of the test metal roof and the metal roof profile files of previous scans, and the bite state of the metal roof node is evaluated, and the change trend of the bite state of the metal roof node is given.

[0043] In S400, the test methods for metal roof panel profiles include: S401. Sample preparation: Build metal roof samples in the wind uplift test chamber; S402, Fatigue wind uplift test: According to the requirements of the specification, the fatigue wind uplift test is carried out on the metal roof sample. After a certain number of tests, the contour of the metal roof panel is collected by a 3D laser scanner; S403, calculating contour parameters: dividing the collected metal roof panel contour point cloud into support positions and non-support positions, using B-spline curves to fit the metal roof panel contours at different positions, and calculating the opening spacing, contour perimeter width, contour perimeter height, and contour perimeter area; S404, statistical analysis parameters: statistically analyze the mean and variance of the above parameters at the support position and the non-support position, determine the statistical value of the profile test of the metal roof panel under the corresponding fatigue times, and use the ratio of the fatigue test times to the test times of the final fatigue failure of the metal roof as the life value of the evaluated roof; S405. Practical application: In practical application, the metal roof panel profile is scanned, and the above parameter values ​​are calculated by fitting and reconstruction. The service life value of the roof panel is determined by comparing with the test statistical values.

[0044] The present invention can integrate compaction reinforcement and roof detection in daily inspections, establish a long-term health file of the roof panel, facilitate tracking and evaluation, and scientifically and quantitatively provide the service life of the metal roof panel; and through the combination of sound recognition and contour scanning, it is determined whether there is a support in a hidden place, and the bite state of the node is identified by the contour morphology of the metal roof panel, thereby improving the accuracy and reliability of roof panel node damage identification; the health state of the metal roof panel is obtained by the inspection method, and no modification of the roof is required. The inspection can be flexibly and maneuverably carried out according to needs, and it has wide adaptability and economy, and the detection results are also intuitive.

[0045] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A metal roof inspection and reinforcement integrated device, characterized in that: include: A walking mechanism (10) for walking on the metal roof (70); A pressing mechanism (20) is provided on the walking mechanism (10) and is used to press the plate ribs (71) of the metal roof (70); A vibration generating mechanism (30) is provided on the walking mechanism (10) and is used to apply vibration to the plate surface of the metal roof (70); A sound collection module (40), arranged on the walking mechanism (10), and used for collecting the sound of the metal roof (70); A positioning module (50), arranged on the walking mechanism (10), and used for locating the position of the walking mechanism (10); A contour scanning module (60), arranged on the walking mechanism (10), and used for scanning the contour of the metal roof (70); A signal transmission module is electrically connected to the sound collection module (40), the positioning module (50) and the contour scanning module (60) respectively, and is used to transmit signals to the outside.

2. The metal roof inspection and reinforcement integrated device according to claim 1, characterized in that: The walking mechanism (10) comprises: Frame (11); A power device (12) is arranged on the vehicle frame (11); A plurality of moving wheels (13) rotatably mounted on the vehicle frame (11) and transmission-connected to the power device (12); The excitation generating mechanism (30) is in transmission connection with the power device (12) so as to generate excitation under the drive of the power device (12).

3. The metal roof inspection and reinforcement integrated device according to claim 2, characterized in that: The excitation generating mechanism (30) comprises: A housing (31) connected to the vehicle frame (11); A toothed disc (32) is rotatably mounted on the vehicle frame (11) and is drivingly connected to the power device (12); a toothless section is provided on the toothed disc (32); A follower gear rod (34) is slidably disposed in the housing (31) and cooperates with the gear plate (32) to slide under the drive of the gear plate (32); A striking rod (35) slidably disposed in the housing (31) and connected to the follower gear rod (34); An elastic member (36) connected to the follower gear rod (34) and the housing (31) respectively, and used to provide elastic force for the follower gear rod (34) and the impact rod (35); A striking rod fixer (37) is provided on one side of the housing (31) and is used to temporarily fix the follower gear rod (34) when the follower gear rod (34) slides to one side of the housing (31); An ejection switch (38) is disposed on the housing (31) and is connected to the ejection rod holder (37); A lever (33) is provided on the toothed disc (32) and is used to shift and trigger the ejection switch (38), so that the ejection rod holder (37) releases the follower toothed rod (34), so that the ejection rod (35) hits the metal roof (70).

4. The metal roof inspection and reinforcement integrated device according to claim 2, characterized in that: The clamping mechanism (20) comprises a plurality of clamping rollers rotatably arranged on the frame (11), the plurality of clamping rollers being used to be located on both sides of the plate rib (71) to clamp the plate rib (71); There are two contour scanning modules (60), which are respectively located on two sides of the vehicle frame (11); each contour scanning module (60) comprises: An adjusting bracket (61), one end of which is connected to the vehicle frame (11); A mounting seat (62) connected to the other end of the adjustment bracket (61); A line laser profile scanner (63) is arranged on the mounting seat (62) so that the emitted laser light can be arranged linearly on the metal roof (70).

5. The metal roof inspection and reinforcement integrated device according to claim 1, characterized in that: The metal roof inspection and reinforcement integrated device also includes: A data processing module, electrically connected to the signal transmission module, for processing data signals; The data storage module is electrically connected to the data processing module and is used to store data signals.

6. A metal roof inspection and reinforcement integrated method, characterized in that: The metal roof inspection and reinforcement integrated device according to any one of claims 1 to 5 comprises the following steps: S100, driving the walking mechanism (10) to move forward along the plate rib (71), and pressing the plate rib (71) by means of the pressing mechanism (20), while the excitation generating mechanism (30) periodically applies excitation to the plate surface of the metal roof (70), so that the plate surface of the metal roof (70) emits sound due to high-frequency vibration; S200, collecting sound information collected by the sound collection module (40), location information collected by the positioning module (50), and contour information of the metal roof (70) scanned by the contour scanning module (60); S300, analyzing and processing the sound information collected by the sound collection module (40) and the position information collected by the positioning module (50), obtaining the vibration frequency and damping distribution of the metal roof, and comparing them with the existing vibration frequency and damping distribution data to determine whether there is a support under the metal roof (70) in the area; S400, using the contour information of the metal roof (70) scanned by the contour scanning module (60) and the position information collected by the positioning module (50) to generate a scanning point cloud, fitting and reconstructing the scanning point cloud to generate a metal roof contour, and comparing the contour with the existing metal roof contour to evaluate the metal roof node engagement state; S500: Based on the vibration frequency and damping distribution of the metal roof obtained in S300 and S400 and the generated metal roof profile, a service status evaluation of the metal roof bite node is given.

7. The metal roof inspection and reinforcement integrated method according to claim 6, characterized in that: In S400, the metal roof profile is generated and recorded in the metal roof profile file; for the metal roof scanned for the first time, the generated metal roof profile is compared with the profile of the test metal roof, and the bite state of the metal roof node is evaluated through the change of the profile; for the metal roof scanned again, the roof panel profile is compared with the profile of the test metal roof and the metal roof profile files of previous scans, and the bite state of the metal roof node is evaluated, and the change trend of the bite state of the metal roof node is given.

8. The metal roof inspection and reinforcement integrated method according to claim 6, characterized in that: In S400, after the contour point cloud is collected, the B-spline curve is used to fit the metal roof contour, and the opening spacing, contour outer width, contour outer height, and contour outer area are calculated. The above parameters are compared with the test statistical values ​​to determine the service life value of the roof panel.

9. The metal roof inspection and reinforcement integrated method according to claim 6, characterized in that: In S300, the step of analyzing and processing the sound information collected by the sound collection module (40) includes: The signal is intercepted according to the period of the excitation generating mechanism (30), and the intercepted sound signal is subjected to time-frequency analysis to calculate the scale spectrum of the sound signal q. , ， in, is the wavelet function used in time-frequency analysis, * indicates convolution calculation, t is time, and s is scale; After that, two scales s1 and s2 are selected near the estimated metal roof vibration frequency, and the logarithms of the scale spectra corresponding to the two scales are calculated. The slope D of the logarithmic curve of the scale spectrum is used to obtain the vibration frequency f and damping coefficient of the metal roof. : ， ， in, and is the time-frequency analysis parameter.

10. The metal roof inspection and reinforcement integrated method according to claim 7, characterized in that: The opening spacing, the outer width of the profile, the outer height of the profile, and the outer area of ​​the profile obtained in S400, the frequencies and damping parameters of different orders obtained in S300, and the position information collected by the positioning module (50) are combined to construct a spatial distribution sequence of various parameters on the roof and to statistically analyze the distribution of various parameters on the roof, to detect parameter anomalies, to give parameter distribution anomaly areas, and to evaluate and warn the overall service condition of the roof in combination with the test statistical values.

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