A cadastral mapping device based on three-dimensional laser scanning

Abstract

This invention discloses a cadastral surveying device based on three-dimensional laser scanning, relating to the field of surveying equipment. It includes a base plate with a U-shaped cavity extending through it. When the threaded rod rotates, the surveying platform can slide up and down the outer wall of the rotating threaded rod. When the surveying platform slides upwards, two sets of surveying laser scanners can be quickly pushed out of the protective shell, allowing for surveying work. When the surveying platform slides downwards, the two sets of surveying laser scanners can be quickly retracted into the protective shell. The entire operation is convenient and quick, saving workers' time and improving the flexibility of the surveying device. The motor can rotate the cleaning brush on the rotating rod. By setting a connection structure between the cleaning brush and the surveying laser scanner, dust on the scanner lens can be quickly removed, improving both the quality of the scanned image and the accuracy of the surveying.

Description

Technical Field

[0001] This invention relates to the field of surveying equipment technology, and in particular to a cadastral surveying device based on three-dimensional laser scanning. Background Technology

[0002] The cadastral surveying equipment using 3D laser scanning mainly includes a high-precision 3D laser scanner and its supporting software system. The high-precision 3D laser scanner, such as the HS series terrestrial 3D laser scanner, features high precision, high frequency, and long-distance scanning capabilities, enabling 360-degree scanning to quickly acquire the 3D point cloud data required for cadastral surveying. The workflow of this equipment typically includes data acquisition, data stitching, accuracy verification, and cadastral mapping. In the data acquisition stage, the scanner scans the measurement area using laser pulses to acquire high-density, high-precision 3D point cloud data. Subsequently, the supporting software system automatically stitches together the point cloud data from each station to form complete point cloud data for the measurement area. In the accuracy verification stage, the stitched point cloud data is sliced ​​and checked to verify whether its accuracy meets the requirements of cadastral surveying. Finally, cadastral mapping software is used to quickly draw a cadastral map based on the point cloud data.

[0003] Existing 3D laser scanning and mapping devices cannot adjust the measuring instrument to a very high height during scanning and mapping, thus preventing ultra-high-altitude mapping. To address these issues, Chinese patent CN218994310U discloses a 3D laser scanning and mapping device. This device solves the problem of inconvenience and difficulty in performing comprehensive scanning and accurate mapping during use by combining a rotating frame, a measuring frame, a forward measuring instrument, and a reverse measuring instrument. Furthermore, the combination of a wheel frame, a support tray, a plug-in column, and a telescopic column solves the problem of the inability to adjust the measuring height for ultra-high-altitude mapping during use.

[0004] Before using this surveying device, the surveying frame needs to be installed on the rotating frame. This process not only wastes the staff's time but also reduces the flexibility of the surveying device. During outdoor 3D laser scanning, a lot of dust easily accumulates on the scanning lens, which can significantly affect the laser scanning lens, specifically by reducing the performance and measurement accuracy of the equipment. Since the surveying frame in this device lacks a dust removal structure, the quality of the scanned image will be affected during the surveying process, and the accuracy of the surveying will also be reduced. Summary of the Invention

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A cadastral surveying device based on three-dimensional laser scanning includes a base plate with a U-shaped cavity extending from front to back. Two sets of moving mechanisms are installed at the bottom of the base plate. A rotatable fixing mechanism is installed in the U-shaped cavity. A hollow column is fixedly connected to the top center of the base plate. A lifting column is slidably connected to the inner wall of the hollow column. A baffle is fixedly connected to the top of the lifting column. A shaft disk is fixedly connected to the top center of the baffle. A surveying mechanism is installed above the shaft disk. The surveying mechanism includes a shaft cover, a top plate, a protective shell, a surveying laser scanner, a motor, and mounting components. The device consists of a disc, a rotating rod, a nut, and a cleaning brush. The outer wall of the disc is rotatably connected to the inner wall of the cover. A top plate is fixedly connected to the outer wall of the cover. A protective shell is fixedly connected to the top outer edge of the top plate. Two sets of surveying laser scanners are installed in the protective shell. A motor is fixedly connected to the top of each surveying laser scanner. A mounting disc is rotatably connected to the movable end of each motor. A rotating rod is sleeved on one end of each mounting disc. A nut is threaded onto the other end of each mounting disc. A cleaning brush is fixedly connected to one end of the outer wall of each rotating rod. The surface of the cleaning brush can slide closely against the mirror surface of the surveying laser scanner.

[0008] As a further description of the above technical solution:

[0009] The moving mechanism includes a U-shaped plate, a collar, a long-axis threaded tube, rollers, and long-axis bolts. The bottom ends of the base plate are fixedly connected to the U-shaped plate. The inner walls of the U-shaped plates are penetrated by collars on both sides. The inner walls of the collars are penetrated by long-axis threaded tubes. Rollers are rotatably connected to the center of the outer walls of the long-axis threaded tubes. Long-axis bolts are threadedly connected to the inner walls of the long-axis threaded tubes.

[0010] As a further description of the above technical solution:

[0011] The fixing mechanism includes a shaft, a square rotating ring, an L-shaped bracket, a square through hole, a scraper, a collar, a shaft core, a turntable, a threaded column, a threaded sleeve, a square insert rod, and a sliding groove. The shaft is fixedly connected to the top center of the inner wall of the U-shaped placement cavity. The outer wall of the shaft is rotatably connected to a square rotating ring. Both outer walls of the square rotating ring are fixedly connected to L-shaped brackets. Each L-shaped bracket has a through square hole extending vertically. Both bottom ends of the inner walls of the square through holes are fixedly connected to scrapers. The top end of the inner walls of the square through holes is fixedly connected to a collar. The inner walls of the collars are rotatably connected to shaft cores.

[0012] As a further description of the above technical solution:

[0013] The top of each shaft is fixedly connected to a turntable, and the bottom of each shaft is fixedly connected to a threaded post. The outer wall of each threaded post is threadedly connected to a threaded sleeve, and the outer wall of each threaded sleeve is fixedly connected to a square insert rod. The outer walls of both sides of the square insert rod are provided with sliding grooves. The outer walls of the square insert rod are slidably connected to the inner walls of the square through holes, and the inner walls of the sliding grooves are slidably connected to the outer walls of the scraper.

[0014] As a further description of the above technical solution:

[0015] The surveying mechanism also includes a rotating shaft, a threaded rod, a surveying platform, a wireless control module, a control panel, a wireless transmission module, and a top cover. The rotating shaft is fixedly connected to the top center of the top cover, and the threaded rod is rotatably connected to the top of the rotating shaft. The surveying platform is threadedly connected to the outer wall of the threaded rod. The outer wall of the surveying platform is slidably connected to the inner wall of the protective shell. Both ends of the top of the surveying platform are fixedly connected to the bottom of the surveying laser scanner.

[0016] As a further description of the above technical solution:

[0017] The rear end of each motor is fixedly connected to a wireless control module, one side of the rear end face of each surveying laser scanner is fixedly connected to a control panel, and the other side of the rear end face of each surveying laser scanner is fixedly connected to a wireless transmission module. A top cover is fitted onto the top of the outer wall of the protective shell.

[0018] As a further description of the above technical solution:

[0019] The lifting column has multiple sets of inclined slots on both outer walls, and multiple sets of placement frames pass through the lifting column. Each placement frame has a placement box fitted into its inner wall, and square sliding holes pass through the top of both sides of the inner wall of the hollow column.

[0020] As a further description of the above technical solution:

[0021] Hollow plates are fixedly connected to one end of the inner wall of each square sliding hole. Limiting rods pass through both ends of each hollow plate. A return spring is sleeved on one end of the outer wall of each limiting rod. A side plate is fixedly connected to one end face of each limiting rod. An inclined plate is fixedly connected to the other end face of each limiting rod. One end of the outer wall of each inclined plate engages with the inner wall of the inclined groove.

[0022] As a further description of the above technical solution:

[0023] Both sides of the baffle are fixedly connected to support rods, and the outer walls of the support rods are rotatably connected to rotating plates. The opposite surfaces of the two sets of rotating plates are fixedly connected to pull rods.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] (1) When the threaded rod is rotated, the surveying platform can slide up and down on the outer wall of the rotating threaded rod. When the surveying platform slides upward, the two sets of surveying laser scanners can be quickly pushed out of the protective shell, and then the surveying work can be carried out. When the surveying platform slides downward, the two sets of surveying laser scanners can be quickly retracted into the protective shell. The whole operation process is convenient and fast, which not only saves the time of the staff, but also improves the flexibility of the surveying device. The motor can rotate together with the cleaning brush on the rotating rod. By setting the connection structure between the cleaning brush and the surveying laser scanner, it is convenient to quickly remove the dust on the lens of the surveying laser scanner, which not only improves the quality of the scanned image, but also improves the accuracy of the surveying.

[0026] (2) By setting rollers, the entire surveying device can be moved more easily. After removing the long shaft bolts, the long shaft threaded tube can be pulled out from the rollers, and then the rollers can be disassembled and replaced.

[0027] (3) During the movement of the surveying device, both sets of L-shaped supports are placed in the U-shaped placement cavity. When it is necessary to fix the surveying device in place, the square rotating ring can be rotated to rotate both sets of L-shaped supports out of the U-shaped placement cavity at the same time. When the surveyor rotates the turntable, the threaded column at the bottom of the shaft core will also rotate. At this time, the threaded sleeve can move up and down on the outer wall of the rotating threaded column. At the same time, the square insert rod will slide up and down on the inner wall of the square through hole. When the square insert rod moves down, it can be inserted vertically into the ground to fix the entire surveying device. By setting the sliding groove, the contact area between the surface of the square insert rod and the soil in the ground can be expanded, thereby further improving the stability of the square insert rod. By setting the connection structure between the sliding groove and the scraper, when the square insert rod moves up and is retracted into the square through hole, the scraper can remove all the soil attached to the inner wall of the sliding groove.

[0028] (4) By setting up multiple sets of placement boxes, the instruments needed for surveying can be stored. By setting up the connection structure between the inclined plate and the inclined plate slot, the lifting column can be fixed after sliding, thus preventing the lifting column from falling down. By pulling the two sets of side plates in opposite directions at the same time, the inclined plate can be quickly disengaged from the inclined plate slot, and then the lifting column will slide down. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the present invention;

[0030] Figure 2 This is a front view of the present invention;

[0031] Figure 3 This is a front sectional view of the present invention;

[0032] Figure 4 This is a front sectional view of the moving mechanism in this invention;

[0033] Figure 5 This is a front sectional view of the fixing mechanism in this invention;

[0034] Figure 6 This is a front sectional view of the surveying mechanism in this invention.

[0035] The correspondence between the labels and component names in the attached figures is as follows:

[0036] 1. Base plate; 2. U-shaped placement cavity; 3. Moving mechanism; 31. U-shaped plate; 32. Collar; 33. Long shaft threaded tube; 34. Roller; 35. Long shaft bolt; 4. Fixing mechanism; 41. Shaft; 42. Square swivel; 43. L-shaped bracket; 44. Square through hole; 45. Scraper; 46. Shaft collar; 47. Shaft core; 48. Turntable; 49. Threaded column; 410. Threaded sleeve; 411. Square insert rod; 412. Slide groove; 5. Hollow column; 6. Lifting column; 7. Baffle; 8. Shaft disc; 9. Surveying mechanism; 91. Shaft cover; 92. Top plate; 93. Anti- 94. Protective shell; 95. Rotating shaft; 96. Threaded rod; 97. Surveying platform; 98. Surveying laser scanner; 99. Motor; 90. Mounting plate; 910. Rotating rod; 911. Nut; 912. Cleaning brush; 913. Wireless control module; 914. Control panel; 915. Wireless transmission module; 916. Top cover; 10. Angled slot; 11. Placement frame; 12. Placement box; 13. Square sliding hole; 14. Hollow plate; 15. Limiting rod; 16. Return spring; 17. Side plate; 18. Angled block; 19. Support rod; 20. Rotating plate; 21. Pull rod. Detailed Implementation

[0037] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0038] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0039] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments. The present invention provides the following embodiments.

[0040] Reference Figure 1-6 This invention provides an embodiment of a cadastral surveying device based on three-dimensional laser scanning, comprising a base plate 1, a U-shaped placement cavity 2 extending through the base plate 1, and U-shaped plates 31 fixedly connected to both ends of the bottom of the base plate 1. A collar 32 extends through both sides of the inner wall of the U-shaped plate 31, and a long-axis threaded tube 33 extends through the inner wall of the collar 32. Rollers 34 are rotatably connected to the center of the outer wall of the long-axis threaded tube 33, and long-axis bolts 35 are threadedly connected to the inner wall of the long-axis threaded tube 33. By configuring the U-shaped plate 31, collar 32, long-axis threaded tube 33, rollers 34, and long-axis bolts 35, a moving mechanism can be formed. 3. There are two sets of U-shaped plates 31. Each set of U-shaped plates 31 has two sets of collars 32 installed in it. The inner wall of each set of collars 32 is penetrated by a set of long-axis threaded tubes 33. The inner wall of the long-axis threaded tubes 33 is threaded. By setting the connection structure between the long-axis threaded tubes 33 and the long-axis bolts 35, the rollers 34 can be fixed in the U-shaped plates 31. The rollers 34 are set in the grooves of the U-shaped plates 31. By setting the rollers 34, the entire surveying device can be moved more easily. After removing the long-axis bolts 35, the long-axis threaded tubes 33 can be pulled out from the rollers 34. Then the rollers 34 can be disassembled and replaced.

[0041] A shaft 41 is fixedly connected to the top center of the inner wall of the U-shaped placement cavity 2. A square rotating ring 42 is rotatably connected to the outer wall of the shaft 41. L-shaped brackets 43 are fixedly connected to both outer walls of the square rotating ring 42. Both sets of L-shaped brackets 43 are placed in the U-shaped placement cavity 2 during the movement of the surveying device. When it is necessary to fix the surveying device in place, the square rotating ring 42 can be rotated to rotate both sets of L-shaped brackets 43 out of the U-shaped placement cavity 2 at the same time. Each L-shaped bracket 43 has a square through hole 44 that runs vertically through it. The inner walls of the square through holes 44 are fixedly connected to the shaft 41. Each side bottom end is fixedly connected to a scraper 45. Each inner wall top of a square through hole 44 is fixedly connected to a collar 46. Each inner wall of a collar 46 is rotatably connected to a shaft core 47. Each top of a shaft core 47 is fixedly connected to a turntable 48. Each bottom of a shaft core 47 is fixedly connected to a threaded post 49. Each outer wall of a threaded post 49 is threadedly connected to a threaded sleeve 410. Each outer wall of a threaded sleeve 410 is fixedly connected to a square insert rod 411. Both outer walls of the square insert rod 411 have sliding grooves 412, allowing the outer walls of the square insert rod 411 to slide against the inner wall of the square through hole 44. The sliding connection is such that the inner wall of the groove 412 is slidably connected to the outer wall of the scraper 45. When the surveyor rotates the turntable 48, the threaded post 49 at the bottom of the shaft core 47 will also rotate. At this time, the threaded sleeve 410 can move up and down on the outer wall of the rotating threaded post 49, and the square insert 411 will also slide up and down on the inner wall of the square through hole 44. When the square insert 411 moves downward, it can be vertically inserted into the ground, which plays a role in fixing the entire surveying device. By setting the groove 412, the contact area between the surface of the square insert 411 and the ground soil can be increased. The contact surface further improves the stability of the square insert 411. By setting the connection structure between the slide groove 412 and the scraper 45, when the square insert 411 moves upward and retracts into the square through hole 44, the scraper 45 can remove all the dirt attached to the inner wall of the slide groove 412. By setting the shaft 41, square rotating ring 42, L-shaped bracket 43, square through hole 44, scraper 45, shaft ring 46, shaft core 47, turntable 48, threaded column 49, threaded sleeve 410, square insert 411 and slide groove 412, a fixing mechanism 4 can be formed.

[0042] A hollow column 5 is fixedly connected to the top center of the base plate 1. Square openings are provided at both the top and bottom of the hollow column 5. A lifting column 6 is slidably connected to the inner wall of the hollow column 5. The outer wall of the lifting column 6 can slide up and down against the inner wall of the hollow column 5. When the lifting column 6 slides up and down, the height of the entire surveying device can be adjusted. A baffle 7 is fixedly connected to the top of the lifting column 6. A shaft disc 8 is fixedly connected to the top center of the baffle 7. A shaft cover 91 is rotatably connected to the outer wall of the shaft disc 8. A top plate 92 is fixedly connected to the outer wall of the shaft cover 91. A protective shell 93 is fixedly connected to the outer edge of the top of the top plate 92. A rotating shaft 94 is fixedly connected to the top of the rotating shaft 94. A threaded rod 95 is rotatably connected to the top of the rotating shaft 94. A surveying platform 96 is threadedly connected to the outer wall of the threaded rod 95. A threaded hole penetrating vertically is provided at the top center of the surveying platform 96. The outer wall of the threaded rod 95 vertically penetrates the surveying platform. The surveying platform 96 has a threaded hole inside, and its outer wall is slidably connected to the inner wall of the protective shell 93. Surveying laser scanners 97 are fixedly connected to both ends of the top of the surveying platform 96. The scanning lenses of the two sets of surveying laser scanners 97 face opposite directions. Through the connection structure between the shaft disc 8 and the shaft cover 91, the direction of the scanning lenses of the surveying laser scanners 97 can be quickly adjusted. When the threaded rod 95 is rotated, the surveying platform 96 can slide up and down on the outer wall of the rotating threaded rod 95. When the surveying platform 96 slides upward, the two sets of surveying laser scanners 97 can be quickly pushed out of the protective shell 93, and then surveying work can be performed. When the surveying platform 96 slides downward, the two sets of surveying laser scanners 97 can be quickly retracted into the protective shell 93. The entire operation process is convenient and quick, saving workers' time and improving the flexibility of the surveying device.

[0043] Each surveying laser scanner 97 has a motor 98 fixedly connected to its top. The movable ends of the motors 98 are rotatably connected to mounting plates 99. Each mounting plate 99 consists of a base and two sets of threaded rods. One end of the base is connected to the movable end of the motor 98, and the other end of the base is fitted with the two sets of threaded rods. A rotating rod 910 is fitted onto one end of each mounting plate 99, and a nut 911 is threaded onto the other end of each mounting plate 99. Two sets of round holes are opened at one end of each rotating rod 910, and the outer walls of the two sets of threaded rods in the mounting plate 99 simultaneously penetrate the rotating rod. The internal round hole of 910 and the protruding end of the threaded rod are connected to the nut 911. After removing the nut 911, the rotating rod 910 can be disassembled and replaced. A cleaning brush 912 is fixedly connected to one end of the outer wall of the rotating rod 910. The motor 98 can rotate the cleaning brush 912 on the rotating rod 910 together. A wireless control module 913 is fixedly connected to the rear end of the motor 98. By setting the wireless control module 913, the surveyor can remotely control the on / off and speed of the two sets of motors 98 at the same time. A control panel 914 is fixedly connected to one side of the rear end face of the surveying laser scanner 97, and a wireless transmission module 915 is fixedly connected to the other side of the rear end face of the surveying laser scanner 97. By setting the wireless transmission module 915, the surveying laser scanner 97 can upload the scanned information and images in a timely manner. The surface of the cleaning brush 912 can slide closely against the mirror surface of the surveying laser scanner 97. By setting the connection structure between the cleaning brush 912 and the surveying laser scanner 97, it is convenient to quickly remove dust from the lens of the surveying laser scanner 97 and prevent dust from entering the lens. A top cover 916 is fitted onto the top of the outer wall of the protective shell 93. By setting the protective shell 93 and the top cover 916, the two sets of surveying laser scanners 97 can be protected. The surveying mechanism 9 can be formed by setting the shaft cover 91, top plate 92, protective shell 93, rotating shaft 94, threaded rod 95, surveying platform 96, surveying laser scanner 97, motor 98, mounting plate 99, rotating rod 910, nut 911, cleaning brush 912, wireless control module 913, control panel 914, wireless transmission module 915 and top cover 916.

[0044] Multiple sets of inclined slots 10 are provided on both outer walls of the lifting column 6. Multiple sets of placement frames 11 pass through the lifting column 6. Placement boxes 12 are fitted into the inner walls of each placement frame 11. By setting multiple sets of placement boxes 12, surveying equipment can be stored. Square sliding holes 13 pass through the top of both sides of the inner wall of the hollow column 5. A hollow plate 14 is fixedly connected to one end of the inner wall of each square sliding hole 13. Limiting rods 15 pass through both ends of each hollow plate 14. A return spring 16 is fitted into one end of the outer wall of each limiting rod 15. A side plate 17 is fixedly connected to one end of each limiting rod 15. An inclined block 18 is fixedly connected to the other end of each limiting rod 15. One end of the outer wall of 18 is engaged with the inner wall of the inclined slot 10. By setting the connection structure between the inclined slot 18 and the inclined slot 10, the lifting column 6 can be fixed after sliding, thereby preventing the lifting column 6 from falling down. By pulling the two sets of side plates 17 in opposite directions at the same time, the inclined slot 18 can be quickly disengaged from the inclined slot 10, and then the lifting column 6 will slide down. The outer walls of both sides of the baffle 7 are fixedly connected with support rods 19, and the outer walls of the support rods 19 are rotatably connected with rotating plates 20. The opposite surfaces of the two sets of rotating plates 20 are fixedly connected with pull rods 21. By setting pull rods 21, it is convenient for surveyors to pull the entire device.

[0045] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present invention, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted herein.

Claims

1. A cadastral surveying device based on three-dimensional laser scanning, comprising a base plate (1), characterized in that: The base plate (1) has a U-shaped placement cavity (2) that runs through the front and back. Two sets of moving mechanisms (3) are installed at the bottom of the base plate (1). A rotatable fixing mechanism (4) is installed in the U-shaped placement cavity (2). A hollow column (5) is fixedly connected to the top center of the base plate (1). A lifting column (6) is slidably connected to the inner wall of the hollow column (5). A baffle (7) is fixedly connected to the top of the lifting column (6). A shaft disk (8) is fixedly connected to the top center of the baffle (7). A surveying mechanism (9) is installed above the shaft disk (8). The surveying mechanism (9) includes a shaft cover (91), a top plate (92), a protective shell (93), a surveying laser scanner (97), a motor (98), a mounting plate (99), a rotating rod (910), a nut (911), and a cleaning brush (99). 12) The outer wall of the shaft disk (8) is rotatably connected to the inner wall of the shaft cover (91). The outer wall of the shaft cover (91) is fixedly connected to the top plate (92). The top outer edge of the top plate (92) is fixedly connected to the protective shell (93). Two sets of surveying laser scanners (97) are installed in the protective shell (93). The top of the surveying laser scanners (97) is fixedly connected to the motor (98). The movable end of the motor (98) is rotatably connected to the mounting plate (99). One end of the mounting plate (99) is sleeved with a rotating rod (910). The other end of the mounting plate (99) is threaded with a nut (911). One end of the outer wall of the rotating rod (910) is fixedly connected to a cleaning brush (912). The surface of the cleaning brush (912) can slide closely against the mirror surface of the surveying laser scanner (97). The fixing mechanism (4) includes a shaft (41), a square rotating ring (42), an L-shaped bracket (43), a square through hole (44), a scraper (45), a collar (46), a shaft core (47), a turntable (48), a threaded column (49), a threaded sleeve (410), a square insert rod (411), and a slide groove (412). The shaft (41) is fixedly connected to the top center of the inner wall of the U-shaped placement cavity (2). The outer wall of the shaft (41) is rotatably connected to the square rotating ring (42). The outer walls of both sides of the square rotating ring (42) are fixedly connected to the L-shaped bracket (43). The L-shaped bracket (43) is provided with a square through hole (44) that runs vertically through the center. The bottom ends of the inner walls of the square through hole (44) are fixedly connected to the scraper (45). 5) A collar (46) is fixedly connected to the top of the inner wall of the square through hole (44), and a shaft core (47) is rotatably connected to the inner wall of the collar (46); a turntable (48) is fixedly connected to the top of the shaft core (47), and a threaded column (49) is fixedly connected to the bottom of the shaft core (47); a threaded sleeve (410) is threadedly connected to the outer wall of the threaded column (49); a square insert rod (411) is fixedly connected to the outer wall of the threaded sleeve (410); a sliding groove (412) is provided on both outer walls of the square insert rod (411); the outer wall of the square insert rod (411) is slidably connected to the inner wall of the square through hole (44); and the inner wall of the sliding groove (412) is slidably connected to the outer wall of the scraper (45).

2. The cadastral mapping device based on three-dimensional laser scanning according to claim 1, characterized in that: The moving mechanism (3) includes a U-shaped plate (31), a collar (32), a long-axis threaded tube (33), a roller (34), and a long-axis bolt (35). The bottom ends of the base plate (1) are fixedly connected to the U-shaped plate (31). The inner walls of the U-shaped plate (31) are penetrated by the collar (32). The inner walls of the collar (32) are penetrated by the long-axis threaded tube (33). The outer center of the long-axis threaded tube (33) is rotatably connected to the roller (34). The inner walls of the long-axis threaded tube (33) are threaded with the long-axis bolt (35).

3. The cadastral mapping device based on three-dimensional laser scanning according to claim 1, characterized in that: The surveying mechanism (9) also includes a rotating shaft (94), a threaded rod (95), a surveying platform (96), a wireless control module (913), a control panel (914), a wireless transmission module (915), and a top cover (916). The rotating shaft (94) is fixedly connected to the top center of the top plate (92). The threaded rod (95) is rotatably connected to the top of the rotating shaft (94). The surveying platform (96) is threadedly connected to the outer wall of the threaded rod (95). The outer wall of the surveying platform (96) is slidably connected to the inner wall of the protective shell (93). Both ends of the top of the surveying platform (96) are fixedly connected to the bottom of the surveying laser scanner (97).

4. The cadastral mapping device based on three-dimensional laser scanning according to claim 3, characterized in that: The rear end of each motor (98) is fixedly connected to a wireless control module (913), one side of the rear end face of each surveying laser scanner (97) is fixedly connected to a control panel (914), the other side of the rear end face of each surveying laser scanner (97) is fixedly connected to a wireless transmission module (915), and a top cover (916) is fitted onto the top of the outer wall of the protective shell (93).

5. The cadastral mapping device based on three-dimensional laser scanning according to claim 1, characterized in that: The lifting column (6) has multiple sets of inclined slots (10) on both sides of its outer wall. Multiple sets of placement frames (11) pass through the lifting column (6). Placement boxes (12) are fitted into the inner walls of the placement frames (11). Square sliding holes (13) pass through the top of both sides of the inner wall of the hollow column (5).

6. The cadastral mapping device based on three-dimensional laser scanning according to claim 5, characterized in that: Hollow plates (14) are fixedly connected to one end of the inner wall of the square sliding hole (13). Limiting rods (15) pass through both ends of the hollow plates (14). A return spring (16) is sleeved on one end of the outer wall of the limiting rods (15). A side plate (17) is fixedly connected to one end face of the limiting rods (15). An inclined plate block (18) is fixedly connected to the other end face of the limiting rods (15). One end of the outer wall of the inclined plate block (18) is engaged with the inner wall of the inclined groove (10).

7. The cadastral mapping device based on three-dimensional laser scanning according to claim 1, characterized in that: The outer walls of both sides of the baffle (7) are fixedly connected with support rods (19), and the outer walls of the support rods (19) are rotatably connected with rotating plates (20). The opposite surfaces of the two sets of rotating plates (20) are fixedly connected with pull rods (21).

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