Three-dimensional laser scanning device for ground disaster deformation monitoring

Abstract

The invention relates to the technical field of scanning devices, and discloses a three-dimensional laser scanning device for ground disaster deformation monitoring, which comprises a base, a first rotating plate is rotatably mounted on the base, and a first electric telescopic rod for driving the first rotating plate to rotate is rotatably mounted on the base; a second rotating plate is rotationally mounted on the first rotating plate, a second electric telescopic rod for driving the second rotating plate to rotate is rotationally mounted on the first rotating plate, and an electronic level meter for detecting whether the second rotating plate is horizontal or not is fixedly mounted on the second rotating plate. The three-dimensional laser scanner has the beneficial effects that the three-dimensional laser scanner moves to different positions around the tree trunk by rotating and adjusting the support plate, so that multi-point scanning around the tree trunk is realized, and the convenience and accuracy of equipment use are improved.

Description

Technical Field

[0001] This invention relates to the field of scanning device technology, and specifically to a three-dimensional laser scanning device for monitoring geological disaster deformation. Background Technology

[0002] Three-dimensional laser scanning technology is a cutting-edge technology and a new breakthrough in surveying and mapping technology following the GPS spatial positioning system. It uses high-speed laser scanning to rapidly acquire large-area, high-resolution three-dimensional coordinate data of the surface of the object being measured.

[0003] Most existing 3D laser scanning devices are fixed in one location for scanning. For example, the patent with publication number CN220670466U uses two servo motors that work together to start and stop, enabling the 3D laser scanner to rotate in multiple directions. This facilitates multi-directional laser scanning. However, when the device is near a tree trunk, the trunk can block the laser, preventing the scanning of the terrain behind the tree. This requires the device to be moved, adjusted, and scanned again, making it difficult to ensure that the reference point is the same for each adjustment. This not only increases the workload but also reduces the convenience and measurement accuracy of the device. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a device for three-dimensional terrain scanning, thereby achieving both high scanning convenience and high accuracy.

[0005] The objective of this invention can be achieved through the following technical solutions: A three-dimensional laser scanning device for monitoring geological disaster deformation includes a base, on which a first rotating plate is rotatably mounted and a first electric telescopic rod is rotatably mounted to drive the first rotating plate to rotate. On the first rotating plate, a second rotating plate is rotatably mounted and a second electric telescopic rod is rotatably mounted to drive the second rotating plate to rotate. An electronic level for detecting whether the second rotating plate is horizontal is fixedly mounted on the second rotating plate. The second rotating plate is provided with multiple sets of support plates arranged sequentially in the direction away from the second rotating plate. Each set of support plates has a mounting column rotatably installed at one end. The mounting column is fixedly connected to the adjacent support plate below it. The two sets of mounting columns connected to each set of support plates are located at both ends of the support plate. The set of mounting columns on the lowest support plate is fixedly connected to the second rotating plate. A slider is slidably installed on the support plate away from the second rotating plate. A three-dimensional laser scanner is fixedly installed on the slider.

[0006] As a further aspect of the present invention: multiple sets of support screws distributed around the first rotating plate are threadedly installed on the base, and a support base plate is fixedly installed at one end of each support screw.

[0007] As a further aspect of the present invention: the rotation axis of the first rotating plate is perpendicular to the rotation axis of the second rotating plate.

[0008] As a further embodiment of the present invention: a side plate is fixedly installed at one end of the support plate that is rotatably connected to the mounting column, and a first fixing screw pointing to the mounting column is threaded on the side plate, and a friction plate that cooperates with the mounting column is fixedly installed at the end of the first fixing screw.

[0009] As a further embodiment of the present invention: a rotating block is rotatably mounted on one end of the support plate that is fixedly connected to the mounting column. The rotating block is located on the side of the support plate and a first connecting rod is fixedly mounted on the rotating block. A second connecting rod is slidably mounted inside the first connecting rod and coaxially arranged. A second fixing screw for fixing the second connecting rod is threaded on the end of the first connecting rod away from the rotating block.

[0010] As a further aspect of the present invention: a placement block for supporting the second connecting rod is fixedly installed at one end of the support plate that is rotatably connected to the mounting column, and a limit screw is threaded onto the placement block.

[0011] As a further embodiment of the present invention: an L-shaped limiting frame is slidably mounted on the rotating block, and an adjusting screw that drives the limiting frame to move is rotatably mounted on the rotating block. When the first connecting rod is in a vertical state, the lower surface of the horizontal section of the limiting frame is flush with the upper surface of the corresponding support plate.

[0012] As a further embodiment of the present invention: a first connecting ring and a second connecting ring are rotatably mounted on the mounting column, a horizontal first reinforcing plate is fixedly mounted on the first connecting ring, a support column for supporting the adjacent support plate above the first reinforcing plate is fixedly mounted at the end of the first reinforcing plate, a second reinforcing plate is fixedly mounted on the second connecting ring, the second reinforcing plate is set at an angle with the horizontal plane, and the end of the second reinforcing plate away from the second connecting ring is fixedly connected to the first reinforcing plate.

[0013] As a further embodiment of the present invention: the support column is fixedly connected to the support plate adjacent to it above, the lower surface of the support column is flush with the upper surface of the support plate adjacent to it below, and the lowermost support column is in sliding contact with the second rotating plate.

[0014] The beneficial effects of this invention are: (1) In this invention, by rotating the support plate, the three-dimensional laser scanner is moved around the tree trunk to different positions. Then the support plate is fixed again and scanning is performed to realize multi-point scanning around the tree trunk. Through multi-point cross scanning and subsequent data fusion, comprehensive terrain scanning and mapping are achieved, which improves the comprehensiveness and accuracy of the equipment. At the same time, when adjusting the three-dimensional laser scanner to scan different positions, there is no need to frequently move and replace the base, which also avoids recalibrating the horizontal plane where the three-dimensional laser scanner is located, thus improving the convenience and accuracy of the equipment.

[0015] (2) In this invention, the suspended end of the support plate is supported by the first connecting rod and the second connecting rod, so that both ends of each set of support plates can be supported, thereby ensuring that the support plate is in a horizontal state, avoiding the lower support plate from being subjected to large torsional stress deformation that causes deviation in horizontality, ensuring the accuracy of the reference of the three-dimensional laser scanner, and further improving the accuracy of the scanning results of the three-dimensional laser scanner.

[0016] (3) In this invention, during the rotation of the support plate, the first reinforcing plate and the second reinforcing plate follow the rotation of the corresponding support plate under the connection of the first connecting ring and the second connecting ring. Then, the support plate continues to support the suspended end of the support plate through the first reinforcing plate, the second reinforcing plate and the support column, ensuring that the support plate is also in a state of double-end support during the rotation process, avoiding deformation of the support plate, ensuring the accuracy of the reference of the three-dimensional laser scanner, and further improving the accuracy of the scanning results of the three-dimensional laser scanner. Attached Figure Description

[0017] The invention will now be further described with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the base structure in this invention.

[0020] Figure 3 This is a schematic diagram of the support plate in this invention.

[0021] Figure 4 This is a schematic diagram of the structure of the first reinforcing plate in this invention.

[0022] Figure 5 yes Figure 4 Enlarged schematic diagram of point A1 in the middle.

[0023] Figure 6 yes Figure 4 Enlarged diagram of point A2 in the middle.

[0024] In the diagram: 1. Base; 2. First rotating plate; 3. First electric telescopic rod; 4. Second rotating plate; 5. Second electric telescopic rod; 6. Support screw; 7. Support base plate; 8. Mounting column; 9. Support plate; 10. Slider; 11. 3D laser scanner; 12. Side plate; 13. First fixing screw; 14. Friction plate; 15. Rotating block; 16. First connecting rod; 17. Second connecting rod; 18. Second fixing screw; 19. Placement block; 20. Limiting screw; 21. Adjusting screw; 22. Limiting frame; 23. First reinforcing plate; 24. Second reinforcing plate; 25. First connecting ring; 26. Second connecting ring; 27. Support column; 28. Electronic level. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figures 1-6 As shown, the present invention is a three-dimensional laser scanning device for monitoring geological disaster deformation, including a base 1. Multiple sets of support screws 6 distributed around a first rotating plate 2 are threadedly installed on the base 1. A support base plate 7 is fixedly installed at one end of each support screw 6. The first rotating plate 2 is rotatably installed on the base 1, and a first electric telescopic rod 3 that drives the first rotating plate 2 to rotate is rotatably installed on the base 1. A second rotating plate 4 is rotatably installed on the first rotating plate 2, and a second electric telescopic rod 5 that drives the second rotating plate 4 to rotate is rotatably installed on the first rotating plate 2. The rotation axis of the first rotating plate 2 and the rotation axis of the second rotating plate 4 are perpendicular to each other. An electronic level 28 for detecting whether the second rotating plate 4 is horizontal is fixedly installed on the second rotating plate 4. The second rotating plate 4 is provided with multiple sets of support plates 9 arranged sequentially in the direction away from the second rotating plate 4. Each set of support plates 9 has a mounting column 8 rotatably installed at one end. The mounting column 8 is fixedly connected to the support plate 9 below it. The two sets of mounting columns 8 connected on each set of support plates 9 are located at both ends of the support plate 9. The set of mounting columns 8 on the lowest support plate 9 is fixedly connected to the second rotating plate 4. A slider 10 is slidably installed on the support plate 9 away from the second rotating plate 4. A three-dimensional laser scanner 11 is fixedly installed on the slider 10. A side plate 12 is fixedly installed at the end of the support plate 9 that is rotatably connected to the mounting column 8. A first fixing screw 13 pointing to the mounting column 8 is threaded on the side plate 12. A friction plate 14 that cooperates with the mounting column 8 is fixedly installed at the end of the first fixing screw 13.

[0027] In practical application, the base 1 is moved to the detection position, and then the support screw 6 is rotated to make the support base plate 7 contact the ground for fixation. If the base 1 is tilted too much, the base 1 is initially leveled by adjusting the descent distance of the multiple sets of support screws 6.

[0028] After adjustment, the levelness of the second rotating plate 4 is detected by an electronic level 28. The first rotating plate 2 is rotated by the first electric telescopic rod 3, and the second rotating plate 4 is rotated by the second electric telescopic rod 5. The rotation axis of the first rotating plate 2 and the rotation axis of the second rotating plate 4 are perpendicular to each other, thus adjusting the second rotating plate 4 to a horizontal state. Then, the position of the 3D laser scanner 11 is adjusted to perform terrain scanning. When the base 1 is near the tree trunk for detection, the tree trunk will block the laser, preventing the scanning of the terrain behind the tree trunk. At this time, the first fixing screw 13 is rotated to move the friction plate 14 away from the tree trunk. With the support column 8 installed, the support plate 9 is in a free-rotating state. The support plate 9 is then rotated and adjusted, causing it to rotate and extend, which in turn moves the 3D laser scanner 11 around the tree trunk to different positions. The support plate 9 is then fixed again and scanning is performed, achieving multi-point scanning around the tree trunk. Through multi-point cross-scanning and subsequent data fusion, comprehensive terrain scanning and mapping are achieved, improving the comprehensiveness and accuracy of the equipment. At the same time, when adjusting the 3D laser scanner 11 to scan different positions, there is no need to frequently move and replace the base 1, and it also avoids recalibrating the horizontal plane on which the 3D laser scanner 11 is located, improving the convenience and accuracy of the equipment.

[0029] Please see Figures 3-6 As shown, the present invention is a three-dimensional laser scanning device for monitoring geological disaster deformation. A rotating block 15 is rotatably installed on one end of the support plate 9, which is fixedly connected to the mounting column 8. The rotating block 15 is located on the side of the support plate 9, and a first connecting rod 16 is fixedly installed on the rotating block 15. A second connecting rod 17 is slidably installed inside the first connecting rod 16 and is coaxially arranged. A second fixing screw 18 for fixing the second connecting rod 17 is threaded on the end of the first connecting rod 16 away from the rotating block 15.

[0030] Specifically, a placement block 19 for supporting the second connecting rod 17 is fixedly installed at one end of the support plate 9 that is rotatably connected to the mounting column 8, and a limit screw 20 is threadedly connected to the placement block 19.

[0031] Specifically, an L-shaped limiting frame 22 is slidably mounted on the rotating block 15, and an adjusting screw 21 that drives the limiting frame 22 to move is rotatably mounted on the rotating block 15. When the first connecting rod 16 is in the vertical state, the lower surface of the horizontal section of the limiting frame 22 is flush with the upper surface of the corresponding support plate 9.

[0032] In practical application, when adjusting the position of the 3D laser scanner 11, the adjustment starts from the bottom support plate 9. After the adjustment is completed, the limiting screw 20 is released from the restriction on the second connecting rod 17. Then, the first connecting rod 16 and the second connecting rod 17 are rotated so that the first connecting rod 16 rotates to a vertical position. By adjusting the screw 21, the limiting frame 22 is moved closer to the support plate 9 so that the horizontal section of the limiting frame 22 slides into contact with the support plate 9. At this time, the first connecting rod 16 and the second connecting rod 17 can only be in a vertical position and cannot continue to rotate, ensuring the stability of the first connecting rod 16 and the second connecting rod 17 when they are supported. The length of the second connecting rod 17 is adjusted so that the second connecting rod... The lower end of 17 contacts the ground, and then the second connecting rod 17 is fixed by the second fixing screw 18. At this time, the suspended end of the support plate 9 can be supported by the first connecting rod 16 and the second connecting rod 17. The above steps are repeated and the other support plates 9 above are adjusted one by one. By supporting the suspended end of the support plate 9 by the first connecting rod 16 and the second connecting rod 17, both ends of each set of support plates 9 can be supported, thereby ensuring that the support plate 9 is in a horizontal state. This avoids the lower support plate 9 from being subjected to large torsional stress deformation, which would cause deviation in levelness. This ensures the accuracy of the reference of the three-dimensional laser scanner 11 and further improves the accuracy of the scanning results of the three-dimensional laser scanner 11.

[0033] Please see Figures 3-6 As shown, the present invention is a three-dimensional laser scanning device for monitoring geological disaster deformation. A first connecting ring 25 and a second connecting ring 26 are rotatably mounted on the mounting column 8. A horizontal first reinforcing plate 23 is fixedly mounted on the first connecting ring 25. A support column 27 for supporting the adjacent support plate 9 above it is fixedly mounted at the end of the first reinforcing plate 23. A second reinforcing plate 24 is fixedly mounted on the second connecting ring 26. The second reinforcing plate 24 is set at an angle with the horizontal plane, and the end of the second reinforcing plate 24 away from the second connecting ring 26 is fixedly connected to the first reinforcing plate 23.

[0034] Specifically, the support column 27 is fixedly connected to the support plate 9 above it, the lower surface of the support column 27 is flush with the upper surface of the support plate 9 below it, and the lowermost support column 27 is in sliding contact with the second rotating plate 4.

[0035] In practical application, when not in use, the support column 27 is directly positioned between the two sets of support plates 9 for support. The lowest set of support columns 27 is in contact with the second rotating plate 4, thus achieving synchronous support at both ends of each set of support plates 9 when not in use, preventing deformation of the support plates 9. During the rotation of the support plates 9, the first reinforcing plate 23 and the second reinforcing plate 24 follow the rotation of the corresponding support plates 9 under the connection of the first connecting ring 25 and the second connecting ring 26. Furthermore, the first reinforcing plate 23, the second reinforcing plate 24, and the support column 27 continue to support the suspended ends of the support plates 9, ensuring that the support plates 9 are also in a state of double-end support during rotation, preventing deformation of the support plates 9, ensuring the accuracy of the reference of the 3D laser scanner 11, and further improving the accuracy of the scanning results of the 3D laser scanner 11.

Claims

1. A three-dimensional laser scanning device for monitoring geological disaster deformation, comprising a base (1), characterized in that, A first rotating plate (2) is rotatably mounted on the base (1), and a first electric telescopic rod (3) that drives the first rotating plate (2) to rotate is rotatably mounted on the base (1). A second rotating plate (4) is rotatably mounted on the first rotating plate (2), and a second electric telescopic rod (5) that drives the second rotating plate (4) to rotate is rotatably mounted on the first rotating plate (2). An electronic level (28) for detecting whether the second rotating plate (4) is horizontal is fixedly mounted on the second rotating plate (4). The second rotating plate (4) is provided with multiple sets of support plates (9) arranged sequentially in the direction away from the second rotating plate (4). Each set of support plates (9) has a mounting column (8) rotatably installed at one end. The mounting column (8) is fixedly connected to the support plate (9) below it. The two sets of mounting columns (8) connected on each set of support plates (9) are located at both ends of the support plate (9). The set of mounting columns (8) on the lowest support plate (9) is fixedly connected to the second rotating plate (4). A slider (10) is slidably installed on the support plate (9) away from the second rotating plate (4). A three-dimensional laser scanner (11) is fixedly installed on the slider (10).

2. The three-dimensional laser scanning device for monitoring geological disaster deformation according to claim 1, characterized in that, The base (1) is threaded with multiple sets of support screws (6) distributed around the first rotating plate (2), and a support base plate (7) is fixedly installed at one end of the support screws (6).

3. The three-dimensional laser scanning device for monitoring geological disaster deformation according to claim 1, characterized in that, The rotation axis of the first rotating plate (2) is perpendicular to the rotation axis of the second rotating plate (4).

4. The three-dimensional laser scanning device for monitoring geological disaster deformation according to claim 1, characterized in that, A side plate (12) is fixedly installed at one end of the support plate (9) that is rotatably connected to the mounting column (8). A first fixing screw (13) pointing to the mounting column (8) is threaded on the side plate (12). A friction plate (14) that cooperates with the mounting column (8) is fixedly installed at the end of the first fixing screw (13).

5. The three-dimensional laser scanning device for monitoring geological disaster deformation according to claim 1, characterized in that, A rotating block (15) is rotatably mounted on one end of the support plate (9) that is fixedly connected to the mounting column (8). The rotating block (15) is located on the side of the support plate (9) and a first connecting rod (16) is fixedly mounted on the rotating block (15). A second connecting rod (17) is slidably mounted inside the first connecting rod (16) and is coaxially arranged. A second fixing screw (18) for fixing the second connecting rod (17) is threaded on the end of the first connecting rod (16) away from the rotating block (15).

6. A three-dimensional laser scanning device for monitoring geological disaster deformation according to claim 5, characterized in that, One end of the support plate (9) is rotatably connected to the mounting column (8) and a placement block (19) for supporting the second connecting rod (17) is fixedly installed. A limit screw (20) is threaded onto the placement block (19).

7. A three-dimensional laser scanning device for monitoring geological disaster deformation according to claim 6, characterized in that, An L-shaped limiting frame (22) is slidably installed on the rotating block (15). An adjusting screw (21) that drives the limiting frame (22) to move is rotatably installed on the rotating block (15). When the first connecting rod (16) is in a vertical state, the lower surface of the horizontal section of the limiting frame (22) is flush with the upper surface of the corresponding support plate (9).

8. A three-dimensional laser scanning device for monitoring geological disaster deformation according to claim 1, characterized in that, The mounting column (8) is rotatably mounted with a first connecting ring (25) and a second connecting ring (26). A horizontal first reinforcing plate (23) is fixedly mounted on the first connecting ring (25). A support column (27) for supporting the adjacent support plate (9) above it is fixedly mounted on the end of the first reinforcing plate (23). A second reinforcing plate (24) is fixedly mounted on the second connecting ring (26). The second reinforcing plate (24) is set at an angle with the horizontal plane and the end of the second reinforcing plate (24) away from the second connecting ring (26) is fixedly connected to the first reinforcing plate (23).

9. A three-dimensional laser scanning device for monitoring geological disaster deformation according to claim 8, characterized in that, The support column (27) is fixedly connected to the adjacent support plate (9) above it. The lower surface of the support column (27) is flush with the upper surface of the adjacent support plate (9) below it. The lowest support column (27) is in sliding contact with the second rotating plate (4).

Images