Visual construction process production method and on-site supervision device based on BIM

Abstract

The present invention belongs to the field of building construction technology, and specifically, is a visualization construction process production method and a site supervision device based on BIM, including producing a video animation script according to relevant construction and acceptance specifications; accurately constructing a model in BIM software based on the shooting of the construction site by the supervision device and the construction drawings; mapping each construction material in the model in combination with the actual situation on site; arranging the surrounding environment of the model to match the real scene; exporting the model to an fbx format file using a plug-in, importing the file into animation production software for animation production, and adding corresponding animation special effects; rendering and outputting an animation video file in mp4 format; producing a title; the method can form a standardized process for producing a briefing video, thereby improving the actual application effect of the technical briefing; and at the same time, by arranging an automatic dust cleaning structure on the supervision device, the working quality of the supervision device is improved, and the labor burden of the workers is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of building construction, and specifically to a visualized construction process manufacturing method and an on-site monitoring device based on BIM. Background Art

[0002] The construction process records of my country's engineering construction mostly adopt text description, and are mostly stored in two-dimensional electronic documents and paper forms. Technical briefings mostly adopt text description as the main method and oral expression as the auxiliary method.

[0003] However, with the increase of complex engineering projects in my country in recent years, the total amount of construction processes has become more and more. The traditional recording and storage methods are not convenient for quick and efficient query. The steps of a single construction process have become more and more complicated. It is becoming more and more difficult for workers to understand the specific operations and key points. The oral and written description-based briefing method can no longer meet the needs of construction production. Once the on-site construction personnel make mistakes in understanding, it is very easy to cause engineering quality risks and safety hazards, which is not good for the project.

[0004] Therefore, the present invention provides a BIM-based visualized construction process production method and an on-site supervision device. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve the technical problem is: the BIM-based visualized construction process production method of the present invention comprises the following steps:

[0007] S1: Analyze the construction process according to relevant construction and acceptance specifications and make a video animation script;

[0008] S2: Based on the photography of the construction site by the monitoring device and the construction drawings, the overall scene of the construction process and the key parts required by the script are accurately modeled in the BIM software;

[0009] S3: Combined with the actual situation on site, the texture processing is performed for each construction material in the model;

[0010] S4: Arrange the construction environment around the model to match the real scene;

[0011] S5: Use the plug-in to export the model to fbx format file, import the file into the animation software for animation production, and add corresponding animation effects;

[0012] S6: After the animation is completed, it is rendered and output into an animation video file in mp4 format;

[0013] S7: Use video editing software to create a title sequence, and combine it with the animation video file to form the final construction process visualization technical briefing animation; based on this method, a standardized process for the production of construction process visualization briefing videos is formed, which improves the actual application effect of technical briefing.

[0014] Preferably, the construction process is divided into parts, and each sub-process is designed with a separate shooting end. A group of shooting ends is set up for each sub-process. According to the process operation specification requirements, the shooting end is provided with picture performance, dubbing and subtitles at the same time.

[0015] Preferably, in the above three-dimensional model, each component can be added with size parameters to form a parametric model family file.

[0016] Preferably, the scene arrangement can be based on the needs of the enterprise to implant corporate publicity into the surrounding environment of the main model.

[0017] Preferably, when making animations in animation software, the software's own special effects such as revealing, cutting, displacement, rotation, etc. can be used to show the process of the process.

[0018] Preferably, instructions for pre-construction preparations are added to the beginning of the video to improve the completeness of the video briefing.

[0019] A visual construction site supervision device based on BIM, which is used for the above-mentioned construction process manufacturing method, includes a camera, one end of the camera is provided with a shooting end; a rotating rod is rotatably connected to the top surface of the camera, and the end of the rotating rod close to the shooting end is connected to a fan blade, and a support plate is provided on the top surface of the camera corresponding to the other end of the rotating rod, the end of the rotating rod is rotatably connected to the support plate, and a sliding groove is provided at the side wall of the support plate corresponding to the end of the rotating rod, and a card block is slidably connected inside the sliding groove, and a No. 1 spring is connected between the card block and the inner end of the sliding groove, and a card slot matching the card block is provided on the end surface of the rotating rod close to the card block, and the support plate is opposite to the sliding groove. A support sleeve made of a mesh material is connected to the side wall, and a telescopic block made of a water-swelling water-stop material is connected to the end of the support sleeve away from the support plate, and a magnetic block capable of attracting the card block is connected to the end of the telescopic block close to the slide slot. Slide bars are symmetrically arranged on both sides of the shooting end, and a slider is slidably connected to the slide bar. A No. 2 spring is connected between the slider and the bottom end of the shooting end, and a scraping member that fits the side wall of the shooting end is connected between the two sliders, and a pull rope is connected between the side wall of the rotating rod and the two sliders respectively; due to the large amount of dust on the construction site, the camera used for supervision on the construction site is prone to accumulate a lot of dust and impurities, which affects the lens's clear shooting of the construction site, so The staff is required to clean the lens regularly, which increases the workload of the staff. When the monitoring device of the present invention encounters rainy weather, rainwater contacts the telescopic block through the support sleeve, causing the telescopic block to gradually expand and drive the magnetic block to move toward the side of the card block until the magnetic block can attract the card block and make it disengage from the card slot on the rotating rod. At this time, the card block no longer limits the rotating rod, and at the same time, the fan blade drives the rotating rod to rotate under the action of wind force, and retracts the pull rope through the rotating rod, so that the pull rope can pull the two sliders upward. At this time, the slider can drive the scraping member to move upward synchronously, and at the same time, the dust and impurities on the side wall of the shooting end are scraped and cleaned, so that the rain can be used to clean the dust and impurities on the side wall of the shooting end. The rain and wind in the day can automatically clean the dust and impurities on the camera, reducing the labor burden of workers. By cleaning the camera on rainy days, since the camera usually does not need to be supervised on site on rainy days, the adverse effects of the cleaning process on the operation of the camera are reduced. At the same time, after the scraping part scrapes the shooting end, it can be flushed by rainwater, thereby achieving a better cleaning effect. After the rain stops and the sky clears, as the telescopic block contracts and drives the magnetic block to reset, the card block can be inserted into the card slot of the rotating rod again under the pressure of the No. 1 spring, thereby limiting the rotating rod in the non-cleaning state and reducing the situation where the rotating rod rotates at will and affects the smooth operation of the camera.

[0020] Preferably, the scraping member is configured to be cylindrical and rotatably connected to the sliders on both sides, and a group of scraping strips made of uniformly distributed annular and elastic material are arranged on the side walls of the scraping member; when the slider drives the scraping member to move, the scraping member that is in contact with the shooting end can roll on its surface and drive the scraping strip to rotate. The scraping strip arranged at this time can scrape off dust and impurities on the side wall of the shooting end that is in contact with it, and at the same time, when the scraping strip passes over the side wall of the shooting end, the scraping strip bounces up and resets under the action of its own elasticity, so that the scraped impurities can be thrown out, reducing the residual impurities on the scraping member and the shooting end, and at the same time, rainwater can evenly flush the rotating scraping member and the surface of the scraping strip, so that their surfaces are cleaner, reducing the situation where impurities in the dead corner of contact between the scraping member and the shooting end are difficult to discharge, and improving the cleaning effect of the scraping member on impurities on the camera.

[0021] Preferably, a water-absorbing layer made of a water-absorbing material is provided at the top of the shooting end, and an elastic extrusion layer is provided at the bottom of the water-absorbing layer. An arc-shaped leakage groove is provided on the side wall of the shooting end corresponding to the end of the extrusion layer close to the camera, and a partition is connected at the notch of the leakage groove. The extrusion layer is connected to the side wall of the partition, and gaps are provided between the upper and lower ends of the partition and the ends of the leakage groove respectively, and the bottom end of the leakage groove is lower than the contact point between the scraping member and the partition; the water-absorbing layer can absorb and collect rainwater, and the scraping member moving upward can squeeze the rainwater in the water-absorbing layer instantly by squeezing the extrusion layer. At this time, the rainwater can flow from the surface of the shooting end from top to bottom through the bottom of the leakage groove, thereby having a flushing effect on the cleaned surface of the shooting end, further improving the cleanliness of the surface of the shooting end.

[0022] Preferably, a group of annular evenly distributed grooves are provided on the side wall of the scraper, and an elastic eardrum is connected to the notch of the grooves, the outer surface of the scraper strip is provided with a recessed portion, the interior of the scraper strip is provided with a cavity, an air passage connecting the grooves and the cavity is provided inside the scraper, and a sponge layer is provided on the outer surface of the scraper strip and in the recessed portion; the sponge layer provided on the scraper strip can clean the contacted surface of the shooting end more effectively, and when the scraper rolls on the side wall of the shooting end, it can intermittently squeeze the eardrum, so that the gas in the groove flows into the cavity in the scraper strip through the air passage, so that the scraper strip can expand, and the dirty water in the sponge layer is squeezed out by the expansion and deformation of the recessed portion, so as to achieve the effect of repeatedly "wringing out" the sponge layer, reduce the accumulation of dust and impurities on the sponge layer, and cause the sponge layer to gradually reduce the cleaning ability of the camera.

[0023] The beneficial effects of the present invention are as follows:

[0024] 1. The present invention provides a method for producing a visual briefing video of a construction process based on BIM, including producing a video animation script according to relevant construction and acceptance specifications; constructing a precise model in the BIM software based on the shooting of the construction site by the supervision device and the construction drawings; mapping each construction material in the model in combination with the actual site; arranging the surrounding environment of the model to match the real scene; exporting the model into an fbx format file using a plug-in, importing the file into an animation software for animation production, and adding corresponding animation special effects; rendering and outputting an animation video file in mp4 format; and producing a title. This method can form a standardized process for producing a visual briefing video of a construction process, and improve the practical application effect of technical briefing.

[0025] 2. The present invention can utilize rainwater and wind on rainy days to automatically clean dust and impurities on the camera, thereby reducing the labor burden of workers. Moreover, by cleaning the camera on rainy days, since the camera usually does not need to be supervised on site on rainy days, the adverse effects of the cleaning process on the operation of the camera are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, 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.

[0027] The present invention will be further described below in conjunction with the accompanying drawings.

[0028] Figure 1 It is a method step diagram of the present invention

[0029] Figure 2 It is a three-dimensional schematic diagram of the monitoring device in the present invention;

[0030] Figure 3 It is a structural schematic diagram of the monitoring device in the present invention;

[0031] Figure 4 yes Figure 3 The enlarged view of point A in the middle;

[0032] Figure 5 is a schematic diagram of the structure of the scraping member in the second embodiment;

[0033] Figure 6 yes Figure 5 The enlarged view of point B in the middle;

[0034] In the figure: camera 1, rotating rod 2, fan blade 3, support plate 4, slide groove 5, block 6, spring No. 1 7, support sleeve 8, telescopic block 9, magnetic block 10, slide rod 11, slider 12, spring No. 2 13, scraping member 14, pull rope 15, scraping strip 16, water absorption layer 17, squeezing layer 18, leakage groove 19, partition 20, groove 21, eardrum 22, recessed part 23, cavity 24, airway 25, sponge layer 26. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] like Figure 1 As shown, the BIM-based visualized construction process production method of the present invention comprises the following steps:

[0037] S1: Analyze the construction process according to relevant construction and acceptance specifications and make a video animation script;

[0038] S2: Based on the photography of the construction site by the monitoring device and the construction drawings, the overall scene of the construction process and the key parts required by the script are accurately modeled in the BIM software;

[0039] S3: Combined with the actual situation on site, the texture processing is performed for each construction material in the model;

[0040] S4: Arrange the construction environment around the model to match the real scene;

[0041] S5: Use the plug-in to export the model to fbx format file, import the file into the animation software for animation production, and add corresponding animation effects;

[0042] S6: After the animation is completed, it is rendered and output into an animation video file in mp4 format;

[0043] S7: Use video editing software to create a title sequence, and combine it with the animation video file to form the final construction process visualization technical briefing animation; based on this method, a standardized process for the production of construction process visualization briefing videos is formed, which improves the actual application effect of technical briefing.

[0044] The construction process is divided into parts, and each sub-process is designed with a separate shooting end. A group of shooting ends are set up for each sub-process. According to the process operation specifications, the shooting end is provided with picture performance, dubbing and subtitles.

[0045] In the above three-dimensional model, each component can be added with size parameters to form a parametric model family file.

[0046] The scene arrangement can be based on the needs of the enterprise to implant corporate publicity into the surrounding environment of the main model.

[0047] When making animations in animation software, you can use the software's built-in special effects such as visibility, cutting, displacement, rotation, etc. to show the process of the process.

[0048] Add instructions for pre-construction preparations in the opening sequence to improve the completeness of the video briefing.

[0049] Embodiment 1:

[0050] See also Figure 2-Figure 4As shown, the BIM-based visualized construction site supervision device described in the embodiment of the present invention is used for the above-mentioned construction process manufacturing method, including a camera 1, one end of the camera 1 is provided with a shooting end; a rotating rod 2 is rotatably connected to the top surface of the camera 1, and the end of the rotating rod 2 close to the shooting end is connected to a fan blade 3, and a support plate 4 is provided on the top surface of the camera 1 corresponding to the other end of the rotating rod 2, and the end of the rotating rod 2 is rotatably connected to the support plate 4, and a slide groove 5 is provided at the side wall of the support plate 4 corresponding to the end of the rotating rod 2, and a clamping block 6 is slidably connected inside the slide groove 5, and a No. 1 spring 7 is connected between the clamping block 6 and the inner end of the slide groove 5, and a clamping groove matching the clamping block 6 is provided on the end surface of the rotating rod 2 close to the clamping block 6. A support sleeve 8 made of a mesh material is connected to the side wall of the plate 4 opposite to the slide groove 5, and a telescopic block 9 made of a water-swelling water-stop material is connected to the end of the support sleeve 8 away from the support plate 4, and a magnetic block 10 capable of attracting the card block 6 is connected to the end of the telescopic block 9 close to the slide groove 5. Slide bars 11 are symmetrically arranged on both sides of the shooting end, and a slider 12 is slidably connected to the slide bar 11. A No. 2 spring 13 is connected between the slider 12 and the bottom end of the shooting end, and a scraping member 14 that fits the side wall of the shooting end is connected between the two sliders 12, and a pull rope 15 is respectively connected between the side wall of the rotating rod 2 and the two sliders 12; due to the large amount of dust on the construction site, the camera 1 used for supervision on the construction site is prone to accumulate a large amount of dust and impurities, which affects the lens's ability to detect the construction site. In order to take clear pictures on the construction site, the staff needs to clean the lens regularly, which increases the labor burden of the staff; when the monitoring device of the present invention encounters rainy weather, rainwater contacts the telescopic block 9 through the support sleeve 8, causing the telescopic block 9 to gradually expand and drive the magnetic block 10 to move to one side of the card block 6 until the magnetic block 10 can attract the card block 6 and make it disengage from the card slot on the rotating rod 2. At this time, the card block 6 no longer limits the rotating rod 2. At the same time, the fan blade 3 drives the rotating rod 2 to rotate under the action of wind force, and retracts the pull rope 15 through the rotating rod 2, so that the pull rope 15 can pull the two sliders 12 to move upward. At this time, the slider 12 can drive the scraping member 14 to move upward synchronously, and scrape the dust and impurities on the side wall of the shooting end. Sweep and clean, so that the rain and wind on rainy days can be used to automatically clean the dust and impurities on the camera 1, reducing the labor burden of workers, and by cleaning the camera 1 on rainy days, since the camera 1 usually does not need to be supervised on site on rainy days, the adverse effects of the cleaning process on the operation of the camera 1 are reduced. At the same time, after the scraping member 14 scrapes the shooting end, it can be flushed by rainwater, so as to have a better cleaning effect, and when the rain stops and the sky clears, with the contraction of the telescopic block 9 and the reset of the magnetic block 10, the card block 6 can be clamped into the card slot of the rotating rod 2 again under the pressure of the No. 1 spring 7, so that the rotating rod 2 in the non-cleaning state can be limited, reducing the situation where the rotating rod 2 rotates at will and affects the smooth operation of the camera 1.

[0051] The scraper 14 is configured to be cylindrical and is rotatably connected to the sliders 12 on both sides. A group of scraper strips 16 made of uniformly distributed annular and elastic materials are arranged on the side walls of the scraper 14. When the slider 12 drives the scraper 14 to move, the scraper 14 that is in contact with the shooting end can roll on its surface and drive the scraper strips 16 to rotate. At this time, the scraper strips 16 arranged can scrape off dust and impurities on the side wall of the shooting end that is in contact with it. At the same time, when the scraper strips 16 pass over the side wall of the shooting end, the scraper strips 16 bounce back and reset under the action of their own elasticity, so that the scraped impurities can be thrown out, reducing the residual impurities on the scraper 14 and the shooting end. At the same time, rainwater can evenly flush the rotating scraper 14 and the scraper strips 16 surface, so that their surfaces are cleaner, reducing the situation where impurities in the dead corner of contact between the scraper 14 and the shooting end are difficult to discharge, and improving the cleaning effect of the scraper 14 on impurities on the camera 1.

[0052] A water-absorbing layer 17 made of a water-absorbing material is provided at the top of the shooting end, and an elastic squeezing layer 18 is provided at the bottom of the water-absorbing layer 17. An arc-shaped leakage groove 19 is provided on the side wall of the shooting end corresponding to the end of the squeezing layer 18 close to the camera 1. A partition 20 is connected to the notch of the leakage groove 19. The squeezing layer 18 is connected to the side wall of the partition 20. Gaps are provided between the upper and lower ends of the partition 20 and the ends of the leakage groove 19, respectively, and the bottom of the leakage groove 19 is lower than the contact point between the scraping member 14 and the partition 20; the water-absorbing layer 17 can absorb and collect rainwater, and the scraping member 14 moving upward can squeeze the squeezing layer 18 to instantly squeeze out the rainwater in the water-absorbing layer 17. At this time, the rainwater can flow from the top to the bottom of the shooting end surface through the bottom of the leakage groove 19, so that the cleaned shooting end surface can be flushed, further improving the cleanliness of the shooting end surface.

[0053] Embodiment 2:

[0054] like Figure 5-6As shown, in contrast to Example 1, another embodiment of the present invention is as follows: a group of annular evenly distributed grooves 21 are provided on the side wall of the scraping member 14, and an elastic tympanic membrane 22 is connected to the notch of the groove 21, a recessed portion 23 is provided on the outer surface of the scraping strip 16, a cavity 24 is provided inside the scraping strip 16, an airway 25 connecting the groove 21 and the cavity 24 is provided inside the scraping member 14, and a sponge layer 26 is provided on the outer surface of the scraping strip 16 and in the recessed portion 23; the sponge layer 26 provided on the scraping strip 16 can contact The surface of the shooting end can be cleaned more effectively, and when the scraper 14 rolls on the side wall of the shooting end, it can intermittently squeeze the eardrum 22, so that the gas in the groove 21 flows into the cavity 24 in the scraper 16 through the airway 25, so that the scraper 16 can expand and squeeze out the dirty water in the sponge layer 26 through the expansion and deformation of the recessed portion 23, thereby achieving the effect of repeatedly "wringing out" the sponge layer 26, reducing the accumulation of dust and impurities on the sponge layer 26, resulting in a gradual decrease in the cleaning ability of the sponge layer 26 for the camera 1.

[0055] Working principle: When the monitoring device encounters rainy weather, rainwater penetrates the support sleeve 8 and contacts the telescopic block 9, causing the telescopic block 9 to gradually expand and drive the magnetic block 10 to move toward the side of the card block 6 until the magnetic block 10 can attract the card block 6 and make it disengage from the card slot on the rotating rod 2. At this time, the card block 6 no longer limits the rotating rod 2. At the same time, the fan blades 3 drive the rotating rod 2 to rotate under the action of wind, and retract the pull rope 15 through the rotating rod 2, so that the pull rope 15 can pull the two sliders 12 to move upward. At this time, the slider 12 can drive the scraping member 14 to move upward synchronously, while removing dust and impurities on the side wall of the shooting end. The camera 1 is automatically cleaned by scraping and sweeping, so that the dust and impurities on the camera 1 can be automatically cleaned by rainwater and wind on rainy days, which reduces the labor burden of workers. In addition, by cleaning the camera 1 on rainy days, since the camera 1 usually does not need to be supervised on site on rainy days, the adverse effects of the cleaning process on the operation of the camera 1 are reduced. At the same time, after the scraping and sweeping member 14 scrapes the shooting end, it can be flushed by rainwater, so as to achieve a better cleaning effect. After the rain stops and the sky clears, as the telescopic block 9 contracts and drives the magnetic block 10 to reset, the clamping block 6 can be clamped into the clamping slot of the rotating rod 2 again under the pressure of the No. 1 spring 7. When the slider 12 drives the scraper 14 to move, the scraper 14 in contact with the shooting end can roll on its surface and drive the scraper bar 16 to rotate. At this time, the scraper bar 16 can scrape the dust and impurities on the side wall of the shooting end in contact. At the same time, when the scraper bar 16 passes over the side wall of the shooting end, the scraper bar 16 bounces up and resets under the action of its own elasticity, so that the scraped impurities can be thrown out, reducing the impurities remaining on the scraper 14 and the shooting end. Water can evenly flush the surfaces of the rotating scraper 14 and the scraper strip 16, thereby making the surfaces cleaner, reducing the difficulty in removing impurities in the dead angle between the scraper 14 and the shooting end, and improving the cleaning effect of the scraper 14 on the impurities on the camera 1; the water-absorbing layer 17 can absorb and collect rainwater, and the upwardly moving scraper 14 can squeeze the squeezing layer 18 to instantly squeeze out the rainwater in the water-absorbing layer 17. At this time, the rainwater can flow from the bottom of the leakage groove 19 from the shooting end surface from top to bottom, thereby having a flushing effect on the cleaned shooting end surface, further improving the cleanliness of the shooting end surface;The sponge layer 26 disposed on the scraper 16 can more effectively clean the contacted surface of the shooting end, and when the scraper 14 rolls on the side wall of the shooting end, it can intermittently squeeze the eardrum 22, so that the gas in the groove 21 flows into the cavity 24 in the scraper 16 through the airway 25, so that the scraper 16 can expand, and the dirty water in the sponge layer 26 is squeezed out through the expansion and deformation of the recessed part 23, so as to achieve the effect of repeatedly "wringing out" the sponge layer 26, reduce the accumulation of dust and impurities on the sponge layer 26, and cause the sponge layer 26 to gradually reduce the cleaning ability of the camera 1. ;

[0056] 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 the description in the specification are only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which 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 visual construction site monitoring device based on BIM, comprising a camera (1), wherein one end of the camera (1) is provided with a shooting end; characterized in that: A rotating rod (2) is rotatably connected to the top surface of the camera (1), and a fan blade (3) is connected to one end of the rotating rod (2) close to the shooting end. A support plate (4) is provided on the top surface of the camera (1) corresponding to the other end of the rotating rod (2). The end of the rotating rod (2) is rotatably connected to the support plate (4). A sliding groove (5) is provided at the side wall of the support plate (4) corresponding to the end of the rotating rod (2). A clamping block (6) is slidably connected inside the sliding groove (5). A No. 1 spring (7) is connected between the clamping block (6) and the inner end of the sliding groove (5). A clamping groove matching the clamping block (6) is provided on the end surface of the rotating rod (2) close to the clamping block (6). The support plate (4) is opposite to the sliding groove (5). A support sleeve (8) made of a mesh material is connected to the side wall, and a telescopic block (9) made of a water-swelling water-stopping strip material is connected to the end of the support sleeve (8) away from the support plate (4), and a magnetic block (10) capable of attracting the card block (6) is connected to the end of the telescopic block (9) close to the slide groove (5). Slide rods (11) are symmetrically arranged on both sides of the shooting end, and a slider (12) is slidably connected to the slide rod (11). A second spring (13) is connected between the slider (12) and the bottom end of the shooting end, and a scraping member (14) that fits the side wall of the shooting end is connected between the two sliders (12), and a pull rope (15) is respectively connected between the side wall of the rotating rod (2) and the two sliders (12); Rainwater contacts the telescopic block (9) through the support sleeve (8), causing the telescopic block (9) to gradually expand and drive the magnetic block (10) to move toward one side of the clamping block (6), until the magnetic block (10) can attract the clamping block (6) and make it disengage from the clamping slot on the rotating rod (2). At this time, the clamping block (6) no longer limits the rotating rod (2). At the same time, the fan blade (3) drives the rotating rod (2) to rotate under the action of wind force, and retracts the pull rope (15) through the rotating rod (2), so that the pull rope (15) can pull the two sliders (12) to move upward. At this time, the slider (12) can drive the scraping member (14) to move upward synchronously, and scrape and clean the dust and impurities on the side wall of the shooting end.

2. The BIM-based visual construction site monitoring device according to claim 1, characterized in that: The scraping member (14) is configured to be cylindrical and is rotatably connected to the sliders (12) on both sides. A group of scraping strips (16) made of elastic material and uniformly distributed in an annular shape are disposed on the side wall of the scraping member (14).

3. The BIM-based visualized construction site monitoring device according to claim 1, characterized in that: A water-absorbing layer (17) made of a water-absorbing material is provided at the top of the shooting end, and an elastic squeezing layer (18) is provided at the bottom of the water-absorbing layer (17). An arc-shaped liquid leakage groove (19) is provided on the side wall of the shooting end corresponding to the end of the squeezing layer (18) close to the camera (1). A partition (20) is connected to the notch of the liquid leakage groove (19). The squeezing layer (18) is connected to the side wall of the partition (20). Gaps are provided between the upper and lower ends of the partition (20) and the ends of the liquid leakage groove (19), and the bottom end of the liquid leakage groove (19) is lower than the contact point between the scraping member (14) and the partition (20).

4. The BIM-based visualized construction site monitoring device according to claim 2, characterized in that: The side wall of the scraping member (14) is provided with a group of evenly distributed annular grooves (21), the notches of the grooves (21) are connected to an elastic eardrum (22), the outer surface of the scraping strip (16) is provided with a recessed portion (23), the interior of the scraping strip (16) is provided with a cavity (24), the interior of the scraping member (14) is provided with an air passage (25) connecting the grooves (21) and the cavity (24), and a sponge layer (26) is provided on the outer surface of the scraping strip (16) and in the recessed portion (23).

Images