Intelligent laser scanning equipment for surveying and mapping building structure

Abstract

The invention belongs to the technical field of optical measurement, and particularly relates to intelligent laser scanning equipment for building structure surveying and mapping, which comprises a bracket, a platform is fixed at the upper end of the bracket, an annular guide rail is fixed on the outer wall of the platform, and an electric sliding block is sleeved on the annular guide rail; the lower side wall of the electric sliding block is connected with a laser scanner through a swing assembly, a notch is formed in a shell of the laser scanner, a heat dissipation assembly is installed in the notch, and the heat dissipation assembly comprises a box body. According to the laser scanner, cleaning of the annular guide rail is achieved through rotation of the rotating rod, meanwhile, water can intermittently flow out to adsorb heat on the heat conduction pipe, the heat conduction pipe can continuously adsorb heat in the laser scanner, rapid cooling of the laser scanner is completed, and meanwhile the water can be automatically cooled after flowing along the first slope; after the water body is gathered, the rotation of the scraper blade can be completed to complete the automatic cleaning of the filter screen I, so that the air flow can smoothly enter the air inlet pipe to cool the heat conduction pipe.

Description

Technical Field

[0001] The present invention relates to the field of optical measurement technology, and in particular to an intelligent laser scanning device for building structure surveying and mapping. Background Art

[0002] Building structure surveying is a core component of civil engineering, urban planning, and cultural heritage preservation. Traditional surveying methods (such as total stations and theodolites) rely on manual operation and suffer from low efficiency, limited accuracy, and poor environmental adaptability. In recent years, 3D laser scanning technology, due to its non-contact measurement and high-precision point cloud data acquisition capabilities, has been gradually applied to building facade surveying, tunnel engineering, structural health monitoring, and other fields.

[0003] A search revealed that Chinese patent CN119756228A discloses an intelligent laser scanning device for architectural structure mapping. The device comprises a positioning block, an articulated block disposed on the outside of the positioning block movably connected to a tripod bracket, an adjustment motor fixedly connected to the inside of the positioning block, an output end of the adjustment motor fixedly connected to a fixed block, an installation box fixedly connected to the top surface of the fixed block, and a scanner box disposed inside the installation box. The patent application also discloses a heat dissipation mechanism that increases the air flow rate within the scanner box and, in conjunction with heat-absorbing fins disposed within the scanner box, concentrates heat within the scanner box on the fins. When the flowing air contacts the fins, heat is removed through heat exchange, thereby achieving a heat dissipation effect. However, the device suffers from the following problems: The use of heat dissipation fins and airflow for heat dissipation is a single method, resulting in limited effectiveness.

[0004] To solve the above problems, we proposed an intelligent laser scanning device for building structure mapping. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems in the background technology and to propose an intelligent laser scanning device for building structure mapping.

[0006] To achieve the above-mentioned object, the present invention adopts the following technical solution: an intelligent laser scanning device for building structure surveying and mapping, comprising a bracket, a platform fixed to the upper end of the bracket, an annular guide rail fixed to the outer wall of the platform, an electric slider sleeved on the annular guide rail, a laser scanner connected to the lower side wall of the electric slider via a swing assembly, a notch provided on the housing of the laser scanner, and a heat dissipation assembly installed in the notch;

[0007] The heat dissipation assembly includes a box body, an outer wall of the box body is fixedly inserted with a heat conduction pipe, the other end of the heat conduction pipe is inserted into the interior of the laser scanner, the box body is provided with an air inlet and an air outlet, an air inlet pipe is fixed in the air inlet, the end of the air inlet pipe and the air outlet are respectively provided with filter 1 and filter 2, a blower is provided in the air inlet pipe, a water tank is fixedly embedded in the box body, a drain pipe is connected to the lower side wall of the water tank, and an intermittent mechanism is connected between the box body and the drain pipe to intermittently discharge the cooling water in the water tank to flush the heat conduction pipe.

[0008] In the above-mentioned intelligent laser scanning equipment for surveying and mapping building structures, a support plate is fixed to the outer wall of the platform, a bearing 1 is fixed to the end of the support plate, a rotating rod is fixed in the bearing 1, a mounting opening is opened on the platform, a motor is fixed in the mounting opening, the driving end of the motor and the end of the rotating rod are fixed with pulleys, the outer walls of the two pulleys are provided with belts, a connecting plate is fixed to the upper end of the rotating rod, and the outer wall of the end of the connecting plate is glued with bristles for cleaning the surface of the annular guide rail.

[0009] In the above-mentioned intelligent laser scanning device for surveying and mapping building structures, the intermittent mechanism includes a T-shaped plate slidably inserted on the outer wall of the box body, and the outer wall of the T-shaped plate is integrally formed with an extended edge one and an extended edge two. The outer wall of the extended edge one is fixed with a valve plate slidably inserted on the drain pipe, and a through hole is opened on the valve plate. A telescopic spring is fixedly connected between the extended edge two and the inner wall of the box body, and a push plate is fixed to the lower end of the rotating rod, and the push plate is intermittently in contact with the T-shaped plate through the rotation of the rotating rod.

[0010] In the above-mentioned intelligent laser scanning device for surveying and mapping building structures, a rotating shaft is installed on the lower side wall of the box body, and a bevel gear 2 is installed on the lower end of the rotating shaft. A scraper in contact with the surface of the filter screen is fixed on the outer wall of the rotating shaft, and a vertical plate is fixed on the end of the vertical plate, and a bearing 2 is fixed on the end of the vertical plate. A rotating rod is fixed on the inner ring of the bearing 2, and a bevel gear 1 that is vertically meshed with the bevel gear 2 is fixed on the end of the rotating rod. A circular gear is fixed on the other end of the rotating rod, and a piston plate is sliding inside the right end of the box body, and a rack is fixed on the lower side wall of the piston plate. The lower end of the rack passes through the lower side wall of the box body and meshes with the circular gear, and a reset spring is fixed between the piston plate and the inner bottom wall of the box body.

[0011] In the above-mentioned intelligent laser scanning device for building structure surveying, a water pump is fixed in the box body, the input end of the water pump is fixed on the upper side wall of the piston plate, the output end of the water pump is located in the water tank, and a trigger switch connected to the water pump and an external power supply is also fixed in the box body and located on the lower side of the piston plate.

[0012] In the above-mentioned intelligent laser scanning device for building structure surveying and mapping, the inner bottom wall of the box is provided with a first slope, and the upper side wall of the T-shaped plate is provided with a second slope. The height of the first slope is higher at one end close to the heat pipe, and the height of the second slope is lower at one end close to the heat pipe.

[0013] In the above-mentioned intelligent laser scanning device for surveying and mapping building structures, the swinging component includes a connecting frame fixed to the outer wall of the electric slider, a hanging tube fixed in the middle of the connecting frame, a ball sleeve fixed at the lower end of the hanging tube, a universal ball provided in the ball sleeve, the laser scanner is fixed on the outer wall of the universal ball, an electric push rod is fixed to the lower side wall of the electric slider, the driving end of the electric push rod extends into the hanging tube and is fixed with a piston block, a silicone elastomer film layer is fixed on the inner wall of the lower end of the hanging tube, magnetorheological fluid is filled between the piston block and the silicone elastomer film layer, a connecting spring is fixed between the silicone elastomer film layer and the inner wall of the hanging tube, a plurality of limit openings are distributed on the surface of the universal ball, and an electromagnet ring located on the outside of the ball sleeve is fixed at the end of the hanging tube.

[0014] Compared with existing technologies, the advantages of this intelligent laser scanning device for building structure mapping are:

[0015] 1. Set up a circular guide rail and an electric slider. The electric slider moves along the circular guide rail to change the position of the laser scanner, thereby increasing the scanning range of the laser scanner without having to frequently move the entire machine to scan the building.

[0016] 2. Set the bristles, and the motor drive end drives the bristles to move along the annular guide rail in forward and reverse rotation to complete the cleaning of the surface of the annular guide rail and ensure the stability of the electric slider;

[0017] 3. A swing assembly is provided. Under the action of gravity of the laser scanner and the housing, the laser scanner and the housing can rotate freely in the ball sleeve through the universal ball and swing freely to the level. Therefore, when the ground is uneven, it can be quickly leveled through its own swing, reducing the steps of adjusting to the level and realizing the rapid leveling of the laser scanner.

[0018] 4. After the laser scanner is level, the driving end of the electric push rod extends to drive the piston block downward, squeezing the magnetorheological fluid downward, causing the silicone elastomer film layer to expand downward. Part of the silicone elastomer film layer extends into the limit opening, and the electromagnet ring is energized to generate a magnetic field. Under the action of the magnetic field, the magnetorheological fluid in the silicone elastomer film layer changes from liquid to solid state and is clamped in the limit opening, thereby preventing the universal ball from rotating. This stabilizes the laser scanner after it is leveled and avoids swinging during the scanning process.

[0019] 5. Set up a water tank. The rotating rod drives the connecting plate to rotate and drives the push plate to rotate at the same time. When the push plate contacts the T-shaped plate, it pushes the T-shaped plate into the box. At this time, the through-hole is connected to the drain pipe. The cooling water in the water tank is discharged through the drain pipe and flows to the T-shaped plate. It slides down along the second slope and contacts the heat pipe. After absorbing the heat on the heat pipe, it slides down along the first slope to the bottom of the box for collection, completing the cooling of the heat pipe so that the heat pipe can continue to absorb the heat in the laser scanner.

[0020] 6. The water inside the body continues to increase, constantly squeezing the piston plate downward, and the rack moves downward. Through the engagement with the circular gear, the circular gear is driven to rotate, and the circular gear drives the rotating rod and bevel gear 1 to rotate. The engagement of bevel gear 1 and bevel gear 2 drives the rotating shaft and scraper to rotate. During the rotation process, the scraper can scrape off impurities on the surface of filter 1, so that the air inlet pipe can be normally connected to the outside air, so that there is always cold air in the air inlet pipe. The blower drives the cold air to contact the heat pipe, completing the cooling work of the heat pipe, and making the heat pipe cool down quickly;

[0021] To sum up, the present invention can clean the annular guide rail through the rotation of the rotating rod, and at the same time can realize the intermittent outflow of water to absorb the heat on the heat conduction pipe, so that the heat conduction pipe can continuously absorb the heat in the laser scanner, and complete the rapid cooling of the laser scanner. At the same time, the water can automatically dissipate heat and cool down after flowing along the inclined surface. After the water body gathers, it can also complete the rotation of the scraper to complete the automatic cleaning of the filter screen, ensuring that the airflow can smoothly enter the air inlet pipe to cool the heat conduction pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the external structure of an intelligent laser scanning device for building structure mapping proposed by the present invention;

[0023] Figure 2 This is a schematic structural diagram of a suspension pipe in a swing assembly of an intelligent laser scanning device for building structure mapping proposed by the present invention when it is cut open;

[0024] Figure 3 This is a schematic structural diagram of the connection between the ball sleeve and the universal ball in an intelligent laser scanning device for building structure mapping proposed by the present invention;

[0025] Figure 4 This is a schematic structural diagram of a box in an intelligent laser scanning device for building structure mapping proposed by the present invention;

[0026] Figure 5 This is a schematic diagram of the bottom structure of a box in an intelligent laser scanning device for building structure mapping proposed by the present invention;

[0027] Figure 6This is a side view of the connection between the swing component and the laser scanner in the intelligent laser scanning device for building structure mapping proposed by the present invention;

[0028] Figure 7 This is a schematic diagram of the cross-sectional structure of a housing of an intelligent laser scanning device for building structure mapping proposed in the present invention;

[0029] Figure 8 This is a cross-sectional view of a box in an intelligent laser scanning device for building structure mapping proposed by the present invention;

[0030] Figure 9 This is a structural schematic diagram of a T-shaped plate in an intelligent laser scanning device for building structure mapping proposed by the present invention;

[0031] Figure 10 This is a schematic structural diagram of the connection between the circular gear, bevel gear 1 and bevel gear 2 in an intelligent laser scanning device for building structure surveying and mapping proposed by the present invention.

[0032] In the figure: 1 bracket, 2 platform, 3 annular guide rail, 4 support plate, 5 rotating rod, 6 connecting plate, 7 brush, 8 motor, 9 pulley, 10 belt, 11 electric slider, 12 connecting frame, 13 lifting pipe, 14 ball sleeve, 15 laser scanner, 16 electric push rod, 17 piston block, 18 universal ball, 19 electromagnet ring, 20 silicone elastomer film layer, 21 limit opening, 22 box body, 23 water tank, 24 T-plate, 25 push plate, 26 heat pipe, 27 air outlet, 28 filter screen 2, 29 rack, 30 circular gear, 31 bevel gear 1, 32 air inlet pipe, 33 bevel gear 2, 34 scraper, 35 return spring, 36 inclined plane 1, 37 inclined plane 2, 38 drain pipe, 39 through-opening, 40 telescopic spring, 41 piston plate. DETAILED DESCRIPTION

[0033] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0034] Reference Figures 1-10The outer wall of the two pulleys 9 is provided with a belt 10, and the upper end of the rotating rod 5 is fixed with a connecting plate 6. The outer wall of the connecting plate 6 is glued with a brush 7 for cleaning the surface of the annular guide rail 3. The electric slider 11 moves along the annular guide rail 3 to change the position of the laser scanner 15, thereby increasing the scanning range of the laser scanner 15 without frequently moving the entire building.

[0035] To ensure the stability of the electric slider 11, during the scanning process of the building, the motor 8 is started to drive the belt 10 and the rotating rod 5 to rotate. As the driving end of the motor 8 rotates forward and reverse, the rotating rod 5 drives the bristles 7 to move along the annular guide rail 3 to complete the cleaning of the surface of the annular guide rail 3.

[0036] The swing assembly includes a connecting frame 12 fixed to the outer wall of the electric slider 11, a hanging tube 13 is fixed to the middle of the connecting frame 12, a ball sleeve 14 is fixed to the lower end of the hanging tube 13, a universal ball 18 is provided in the ball sleeve 14, a laser scanner 15 is fixed to the outer wall of the universal ball 18, an electric push rod 16 is fixed to the lower side wall of the electric slider 11, the driving end of the electric push rod 16 extends into the hanging tube 13 and is fixed with a piston block 17, a silicone elastomer film layer 20 is fixed to the inner wall of the lower end of the hanging tube 13, a magnetorheological fluid is filled between the piston block 17 and the silicone elastomer film layer 20, and the silicone elastomer film layer 20 and the hanging tube are connected. A connecting spring is fixed between the inner walls of 13, a plurality of limit openings 21 are distributed on the surface of the universal ball 18, an electromagnet ring 19 located outside the ball sleeve 14 is fixed to the end of the lifting tube 13, and the universal ball 18, the laser scanner 15 and the box 22 are fixed at the center of the circle of the whole. After the equipment is moved to the building scanning position, the end of the bracket 1 is inserted into the ground for fixation. Under the action of gravity, the whole composed of the laser scanner 15 and the box 22 is freely swung to the level by the rotation of the universal ball 18 in the ball sleeve 14. Therefore, when the ground is uneven, it can be quickly leveled by its own swing, reducing the steps of adjusting to the level;

[0037] After the laser scanner 15 is level, the electric push rod 16 is started. The driving end of the electric push rod 16 extends to drive the piston block 17 downward, squeezing the magnetorheological fluid downward, causing the silicone elastomer film layer 20 to expand downward. Part of the silicone elastomer film layer 20 extends into the limit opening 21. The electromagnet ring 19 is energized to generate a magnetic field. Under the action of the magnetic field, the magnetorheological fluid in the silicone elastomer film layer 20 changes from a liquid to a quasi-solid state and is clamped in the limit opening 21, thereby preventing the universal ball 18 from rotating. This stabilizes the laser scanner 15 after it is leveled and prevents swinging during the scanning process.

[0038] Magnetorheological fluid is a new type of fluid with controllable fluidity. It is a relatively active research area in smart materials. In the absence of an external magnetic field, it exhibits the properties of a low-viscosity Newtonian fluid. In the presence of an external magnetic field, it exhibits the properties of a high-viscosity, low-fluidity Bingham fluid, transforming into a semi-solid or solid.

[0039] Furthermore, the bracket 1 can be set to be telescopic, and the telescopic method adopts common threaded telescopic, electric telescopic rod telescopic and other methods, which will not be described here. After the universal ball 18 is fixed, if there is an offset, the bracket 1 can be quickly adjusted to the level of the laser scanner 15 by telescoping.

[0040] The heat dissipation assembly includes a box body 22, a heat pipe 26 is fixedly inserted on the outer wall of the box body 22, and the other end of the heat pipe 26 is inserted into the interior of the laser scanner 15. The box body 22 is provided with an air inlet and an air outlet 27. An air inlet pipe 32 is fixed in the air inlet, and a filter 1 and a filter 28 are respectively provided at the end of the air inlet pipe 32 and in the air outlet 27. A blower is provided in the air inlet pipe 32. A water tank 23 is fixedly embedded in the box body 22, and a drain pipe 3 is connected to the lower side wall of the water tank 23. 8. An intermittent mechanism is connected between the box body 22 and the drain pipe 38 to allow the cooling water in the water tank 23 to be intermittently discharged to flush the heat conduction pipe 26. The intermittent mechanism includes a T-shaped plate 24 slidably inserted on the outer wall of the box body 22. The outer wall of the T-shaped plate 24 is integrally formed with an extension edge 1 and an extension edge 2. The outer wall of the extension edge 1 is fixed with a valve plate slidably inserted on the drain pipe 38. A through hole 39 is opened on the valve plate. When the through hole 39 is connected to the drain pipe 38, drainage is stopped when the through hole 39 is disconnected. A telescopic spring 40 is fixedly connected between the extension edge 2 and the inner wall of the box body 22. A push plate 25 is fixed to the lower end of the rotating rod 5. The push plate 25 is intermittently contacted with the T-shaped plate 24 through the rotation of the rotating rod 5. Part of the heat in the laser scanner 15 is discharged through the heat conduction pipe 26. The blower drives the air flow to contact the heat conduction pipe 26, and the heat on the heat conduction pipe 26 is blown out from the air outlet 27. The rotating rod 5 drives the connecting plate 6 to rotate and drives the push plate 25 to rotate at the same time. The push plate 25 and the T When the template 24 contacts, it pushes the T-shaped plate 24 to move into the box body 22. At this time, the through-hole 39 is connected to the drain pipe 38, and the cooling water in the water tank 23 is discharged through the drain pipe 38, flows onto the T-shaped plate 24, slides down the second slope 37 and contacts the heat pipe 26, absorbs the heat on the heat pipe 26, and then slides down the first slope 36 to the bottom of the box body 22 for collection, completing the cooling of the heat pipe 26, so that the heat pipe 26 can continue to absorb the heat in the laser scanner 15.

[0041] A rotating shaft is installed on the lower side wall of the box body 22, and a bevel gear 2 33 is installed on the lower end of the rotating shaft. A scraper 34 in contact with the surface of the filter screen is fixed on the outer wall of the rotating shaft. A vertical plate is also fixed to the lower side wall of the box body 22, and a bearing 2 is fixed at the end of the vertical plate. A rotating rod is fixed to the inner ring of the bearing 2, and a bevel gear 1 31 vertically meshed with the bevel gear 2 33 is fixed at the end of the rotating rod. A circular gear 30 is fixed to the other end of the rotating rod. A piston plate 41 slides inside the right end of the box body 22, and a rack 29 is fixed to the lower side wall of the piston plate 41. The lower end of the rack 29 passes through the lower side wall of the box body 22 and meshes with the circular gear 30. A reset spring 35 is fixed between the piston plate 41 and the inner bottom wall of the box body 22. A water pump is fixed in the box body 22, and the input end of the water pump is fixed to the upper side wall of the piston plate 41. The output end of the water pump is located in the water tank 23. A trigger switch connected to the water pump and the external power supply is also fixed in the box body 22. The water inside the box body 22 continues to increase, continuously squeezing the piston plate 41 downward, and the rack 29 moves downward, driving the circular gear 30 to rotate through engagement with the circular gear 30. The circular gear 30 drives the rotating rod and the bevel gear 1 31 to rotate, and the engagement of the bevel gear 1 31 and the bevel gear 2 33 drives the rotating shaft and the scraper 34 to rotate. The scraper 34 can scrape off the impurities on the surface of the filter screen 1 during the rotation process, so that the air inlet pipe 32 can be normally connected with the external air, so that there is always cold air in the air inlet pipe 32, and the blower drives the cold air to contact the heat pipe 26, completing the cooling work of the heat pipe 26, so that the heat pipe 26 is cooled quickly;

[0042] When the water at the bottom of the box body 22 gradually increases to the point where the piston plate 41 moves downward and presses the trigger switch, the water pump starts and pumps the water at the bottom of the box body 22 into the water tank 23. After the water is pumped out, the piston plate 41 is reset under the elastic force of the reset spring 35, and the rack 29 moves upward, driving the circular gear 30, bevel gear 1 31 and bevel gear 2 33 to rotate, causing the scraper 34 to rotate to its original position, and repeating the above process to achieve intermittent cleaning of the filter screen 1.

[0043] Furthermore, the inner bottom wall of the box body 22 is provided with a slope 1 36, and the upper side wall of the T-shaped plate 24 is provided with a slope 2 37. The height of the slope 1 36 is high at the end close to the heat pipe 26, and the height of the slope 2 37 is low at the end close to the heat pipe 26. The high height of the slope 1 36 on the side close to the heat pipe 26 can cause the water to flow to the side away from the heat pipe 26 and not flow to the side of the laser scanner 15, that is, the water will not enter the laser scanner 15. The setting of the slope 2 37 allows the water to flow downward and absorb the heat on the heat pipe 26 and then gather on the upper side of the piston plate 41, thereby cooling the heat pipe 26 and cleaning the filter 1 by the scraper 34. At the same time, the flow of water on the slope 1 36 increases the contact area between the water and the box body 22, so that the heat of the water is quickly dissipated to the box body 22 and then dissipated into the air, so that the water is quickly cooled.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An intelligent laser scanning device for building structure mapping, comprising a bracket (1), characterized in that: A platform (2) is fixed to the upper end of the bracket (1), an annular guide rail (3) is fixed to the outer wall of the platform (2), an electric slider (11) is sleeved on the annular guide rail (3), a laser scanner (15) is connected to the lower side wall of the electric slider (11) via a swing assembly, a notch is provided on the housing of the laser scanner (15), and a heat dissipation assembly is installed in the notch; The heat dissipation component includes a box body (22), a heat conducting pipe (26) is fixedly inserted on the outer wall of the box body (22), the other end of the heat conducting pipe (26) is inserted into the interior of the laser scanner (15), an air inlet and an air outlet (27) are opened on the box body (22), an air inlet pipe (32) is fixed in the air inlet, a filter screen 1 and a filter screen 2 (28) are respectively provided at the end of the air inlet pipe (32) and in the air outlet (27), a blower is provided in the air inlet pipe (32), a water tank (23) is fixedly embedded in the box body (22), a drain pipe (38) is connected to the lower side wall of the water tank (23), and an intermittent mechanism is connected between the box body (22) and the drain pipe (38) to allow the cooling water in the water tank (23) to be intermittently discharged to flush the heat conducting pipe (26).

2. The intelligent laser scanning device for building structure mapping according to claim 1, characterized in that: A support plate (4) is fixed to the outer wall of the platform (2), a bearing 1 is fixed to the end of the support plate (4), a rotating rod (5) is fixed in the bearing 1, a mounting opening is opened on the platform (2), a motor (8) is fixed in the mounting opening, a pulley (9) is fixed on the driving end of the motor (8) and the end of the rotating rod (5), a belt (10) is sleeved on the outer walls of the two pulleys (9), a connecting plate (6) is fixed to the upper end of the rotating rod (5), and a brush (7) for cleaning the surface of the annular guide rail (3) is glued to the outer wall of the end of the connecting plate (6).

3. The intelligent laser scanning device for building structure mapping according to claim 2, characterized in that: The intermittent mechanism includes a T-shaped plate (24) slidably inserted on the outer wall of the box body (22), the outer wall of the T-shaped plate (24) is integrally formed with an extension edge 1 and an extension edge 2, the outer wall of the extension edge 1 is fixed with a valve plate slidably inserted on the drain pipe (38), a through hole (39) is opened on the valve plate, and a telescopic spring (40) is fixedly connected between the extension edge 2 and the inner wall of the box body (22), and a push plate (25) is fixed to the lower end of the rotating rod (5), and the push plate (25) is intermittently in contact with the T-shaped plate (24) by the rotation of the rotating rod (5).

4. The intelligent laser scanning device for building structure mapping according to claim 1, characterized in that: A rotating shaft is installed on the lower side wall of the box body (22), and a bevel gear 2 (33) is installed on the lower end of the rotating shaft. A scraper (34) in contact with the surface of the filter screen is fixed on the outer wall of the rotating shaft. A vertical plate is also fixed on the lower side wall of the box body (22), and a bearing 2 is fixed on the end of the vertical plate. A rotating rod is fixed on the inner ring of the bearing 2, and a bevel gear 1 (31) vertically meshed with the bevel gear 2 (33) is fixed on the end of the rotating rod. A circular gear (30) is fixed on the other end of the rotating rod. A piston plate (41) slides inside the right end of the box body (22), and a rack (29) is fixed on the lower side wall of the piston plate (41). The lower end of the rack (29) passes through the lower side wall of the box body (22) and meshes with the circular gear (30). A reset spring (35) is fixed between the piston plate (41) and the inner bottom wall of the box body (22).

5. The intelligent laser scanning device for building structure mapping according to claim 4, characterized in that: A water pump is fixed in the box body (22), the input end of the water pump is fixed to the upper side wall of the piston plate (41), and the output end of the water pump is located in the water tank (23). A trigger switch connected to the water pump and an external power supply is also fixed in the box body (22) and is located on the lower side of the piston plate (41).

6. The intelligent laser scanning device for building structure mapping according to claim 3, characterized in that: The inner bottom wall of the box body (22) is provided with a first inclined surface (36), and the upper side wall of the T-shaped plate (24) is provided with a second inclined surface (37). The height of the first inclined surface (36) is higher at one end close to the heat conducting pipe (26), and the height of the second inclined surface (37) is lower at one end close to the heat conducting pipe (26).

7. The intelligent laser scanning device for building structure mapping according to claim 1, characterized in that: The swing assembly comprises a connection frame (12) fixed to the outer wall of the electric slider (11), a hanging tube (13) is fixed in the middle of the connection frame (12), a ball sleeve (14) is fixed at the lower end of the hanging tube (13), a universal ball (18) is arranged in the ball sleeve (14), the laser scanner (15) is fixed on the outer wall of the universal ball (18), an electric push rod (16) is fixed on the lower side wall of the electric slider (11), the driving end of the electric push rod (16) extends into the hanging tube (13) and A piston block (17) is fixed, a silicone elastomer film layer (20) is fixed on the inner wall of the lower end of the hanging tube (13), a magnetorheological fluid is filled between the piston block (17) and the silicone elastomer film layer (20), a connecting spring is fixed between the silicone elastomer film layer (20) and the inner wall of the hanging tube (13), a plurality of limit openings (21) are distributed on the surface of the universal ball (18), and an electromagnet ring (19) located outside the ball sleeve (14) is fixed to the end of the hanging tube (13).

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