Multifunctional geographic information surveying and mapping device and surveying and mapping method thereof

Abstract

The invention provides a multifunctional geographic information surveying and mapping device and a surveying and mapping method thereof, and relates to the field of geographic surveying and mapping. The multifunctional geographic information surveying and mapping device comprises a fixed column, a surveying and mapping mechanism, a lifting mechanism, a dustproof mechanism and an opening and closing mechanism; the surveying and mapping mechanism comprises a lifting seat and a total station, the lifting seat is mounted in the protection groove, the total station is mounted at the top of the lifting seat, and the total station is detachably mounted on the lifting seat; the dustproof mechanism comprises two supporting rods symmetrically arranged on the top of the lifting base, and the tops of the two supporting rods are jointly connected with a fixing plate. According to the invention, through the arrangement of the dustproof mechanism, the total station can be entirely wrapped by the dustproof curtain while the total station is stored in the protection groove, so that the amount of dust falling onto the total station is effectively reduced, the influence of dust attachment on the surveying and mapping precision of the total station is reduced, and the probability of failure of the total station caused by dust invasion into the total station is reduced.

Description

Technical Field

[0001] The invention belongs to the field of geographic surveying and mapping technology, in particular to a multifunctional geographic information surveying and mapping device and a surveying and mapping method thereof. Background Art

[0002] Surveying and mapping refers to the measurement, collection and mapping of the shape, size, spatial position and attributes of natural geographical features or artificial facilities on the surface.

[0003] As a commonly used surveying and mapping tool, the surveying and mapping function of the total station can also help people monitor some geological deformations such as ground subsidence and landslides, as well as the deformation of buildings, bridges, and tunnels, so as to achieve early warning of geological disasters and improve the safety and stability of construction. At present, when using the total station for fixed-point monitoring, a prism is usually set at the monitoring location, and the total station is installed at a geologically stable location. At the same time, it is ensured that there are no obstacles between the total station and the monitoring point. The position of the prism is measured by regularly starting the total station to obtain the position change data of the prism. However, the total station is a precision device and is relatively expensive. In the field environment, it is easy to affect its accuracy due to wind, rain, and dust adhesion, and even cause damage to the total station.

[0004] In summary, the present invention provides a multifunctional geographic information surveying and mapping device and a surveying and mapping method thereof to solve the above-mentioned problems. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a multifunctional geographic information surveying and mapping device and a surveying and mapping method thereof, which are achieved by the following specific technical means:

[0006] A multifunctional geographic information surveying and mapping device, comprising a fixed column, a surveying and mapping mechanism, a lifting mechanism, a dust prevention mechanism and an opening and closing mechanism:

[0007] A protective groove is provided on the top of the fixing column;

[0008] The surveying and mapping mechanism comprises a lifting seat and a total station, the lifting seat is installed in the protective groove, the total station is installed on the top of the lifting seat, and the total station is detachably installed on the lifting seat;

[0009] The dustproof mechanism includes two support rods symmetrically arranged on the top of the lifting seat, the tops of the two support rods are commonly connected to a fixed plate, the four corners of the fixed plate are rotatably installed with movable rods, a movable groove 1 is penetrated through the movable rod, and a movable groove 2 is arranged on the outer surface of the movable rod, a protective cover plate is also arranged on the top of the fixed plate, the size of the protective cover plate is larger than the size of the protective groove, a dustproof curtain is installed between the protective cover plate and the fixed plate, and connecting columns are fixedly installed at the four corners of the bottom of the dustproof curtain, each of the connecting columns respectively penetrates into the movable groove 1 from the inner side of each of the movable grooves 2, and a movable sleeve is connected to one end of the penetrated end, and the dustproof mechanism also includes an annular skeleton, and the annular skeleton passes through the inner side of each of the movable sleeves.

[0010] Furthermore, the opening and closing mechanism includes a movable ring installed between the two support rods, four connecting rods are installed in a circular array on the outer side of the movable ring, the connecting rod is rotatably connected to the movable ring, and the other ends of the four connecting rods are rotatably connected to the four movable rods respectively, and the opening and closing mechanism also includes sliding grooves symmetrically opened on the two support rods, sliding rods are slidably installed on the inner sides of the sliding grooves, the top ends of the sliding rods are fixedly connected to the movable rings, the bottom ends of the sliding rods pass through the lifting seat, and the penetrated ends are commonly connected to a movable plate.

[0011] Furthermore, a fixing groove is provided at the bottom of the lifting seat, a spring is installed inside the fixing groove, the bottom end of the spring passes through the bottom of the fixing groove, and the two ends of the spring respectively abut against the top of the movable plate and the top inner wall of the fixing groove.

[0012] Furthermore, the lifting mechanism includes lifting grooves opened on the inner walls on both sides of the protective groove, and the two ends of the movable plate are respectively inserted into the two lifting grooves, threaded rods are installed inside the lifting grooves, and the threaded rods are threadedly connected to the movable plate.

[0013] Furthermore, the lifting mechanism also includes a mounting groove arranged inside the fixed column, and the bottom ends of the two threaded rods are inserted into the mounting groove. A dual-axis motor is also installed in the mounting groove, and the two output ends of the dual-axis motor are respectively connected to the two threaded rods through a bevel gear set.

[0014] Furthermore, a moving block is provided at the bottom of the lifting seat, a moving groove is provided on the inner wall of the protective groove, the moving block penetrates into the moving groove, and the moving block is slidably connected to the moving groove.

[0015] Furthermore, a sealing rubber ring is provided on the bottom edge of the protective cover plate.

[0016] Furthermore, a through drainage groove is provided at the bottom of the inner wall on one side of the protection groove.

[0017] A surveying and mapping method applied to the above multifunctional geographic information surveying and mapping device, wherein the surveying and mapping steps are as follows:

[0018] S1: Start the double-axis motor in the lifting mechanism, and the double-axis motor drives the threaded rod to rotate so that the movable plate threadedly connected with the threaded rod rises, and the movable plate pushes the lifting seat to rise synchronously so that the surveying and mapping mechanism moves out from the top of the fixed column;

[0019] S2: After the moving block moves to the top of the moving slot, the lifting seat stops moving, and the threaded rod continues to drive the movable plate to rise. The movable plate pushes the sliding rod to move upward, and the sliding rod pushes the movable ring to move upward. The movable ring pushes the movable rod to flip through the connecting rod. During the flipping process of the movable rod, the dust curtain moves up and is retracted until the total station is exposed;

[0020] S3: Start the total station to survey the detection points;

[0021] S4: After the surveying is completed, the dual-axis motor reverses to move the movable plate downward, and the elastic force of the spring pushes the movable block to remain at the top of the movable slot until the dust curtain is retracted, and then the lifting seat and the movable plate move synchronously downward into the protective slot.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention can place the total station as a whole inside the protective groove when it is not in the monitoring state through the lifting mechanism. At the same time, the protective cover plate closes the upper end opening of the protective groove, which can protect the total station from wind and rain and reduce the probability of damage to the total station in extreme weather.

[0024] 2. The present invention provides a dustproof mechanism, so that when the total station is placed in the protective groove, the dustproof curtain can cover the entire total station. On the one hand, even if the seal of the protective cover fails, rainwater falling on the dustproof curtain can flow along the outside of the dustproof curtain to the bottom of the protective groove and be discharged, further reducing the risk of water entering the total station. On the other hand, a certain dustproof protection can be provided inside the protective groove to prevent the total station from contacting dust that enters the protective groove from the opening of the protective groove during the detection process, thereby improving the dustproof performance of the total station in the protective groove and ensuring the cleanliness of the lens of the total station during the next measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0026] Figure 2 It is a three-dimensional schematic diagram of the fixed column in the present invention;

[0027] Figure 3It is a three-dimensional schematic diagram of a part of the structure when the dust curtain of the present invention is folded;

[0028] Figure 4 It is a three-dimensional schematic diagram of a part of the structure when the dust curtain of the present invention is lowered;

[0029] Figure 5 The present invention Figure 4 A three-dimensional diagram of the hidden dust curtain;

[0030] Figure 6 is a three-dimensional schematic diagram of the annular skeleton in the present invention;

[0031] Figure 7 It is a three-dimensional schematic diagram of the movable rod in the present invention;

[0032] Figure 8 It is a partial cross-sectional schematic diagram of the present invention.

[0033] In the figure:

[0034] 1. Fixed column; 101. Protective groove; 2. Surveying and mapping mechanism; 201. Lifting seat; 202. Total station; 3. Lifting mechanism; 301. Lifting groove; 302. Threaded rod; 303. Mounting groove; 304. Double-axis motor; 305. Bevel gear set; 4. Dust-proof mechanism; 401. Support rod; 402. Fixed plate; 403. Movable rod; 404. Movable groove one; 405. Movable groove two; 406. Protective cover; 407. Dust-proof curtain; 408. Connecting column; 409. Movable sleeve; 410. Ring frame; 5. Opening and closing mechanism; 501. Movable ring; 502. Connecting rod; 503. Slide groove; 504. Slide rod; 505. Movable plate; 506. Fixed groove; 507. Spring; 6. Moving block; 7. Moving groove; 8. Sealing rubber ring; 9. Drain groove. DETAILED DESCRIPTION

[0035] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0036] like Figure 1-8 As shown, the present invention provides a multifunctional geographic information surveying and mapping device, including a fixed column 1, a surveying and mapping mechanism 2, a lifting mechanism 3, a dustproof mechanism 4 and an opening and closing mechanism 5:

[0037] A protective groove 101 is provided on the top of the fixed column 1;

[0038] The surveying and mapping mechanism 2 includes a lifting seat 201 and a total station 202. The lifting seat 201 is installed in the protective groove 101, and the total station 202 is installed on the top of the lifting seat 201. The total station 202 is detachably installed on the lifting seat 201, so that the setting of the fixed column 1 and the installation of the total station 202 can be carried out separately to prevent the total station 202 from being damaged during the installation of the fixed column 1.

[0039] The dustproof mechanism 4 includes two support rods 401 symmetrically arranged on the top of the lifting seat 201, and the tops of the two support rods 401 are commonly connected to a fixed plate 402, and movable rods 403 are rotatably installed at the four corners of the fixed plate 402. A movable groove 1 404 is penetrated through the movable rod 403, and a movable groove 2 405 is arranged on the outer surface of the movable rod 403. A protective cover plate 406 is also arranged on the top of the fixed plate 402. The size of the protective cover plate 406 is larger than the size of the protective groove 101. A dustproof curtain 407 is installed between the protective cover plate 406 and the fixed plate 402. Connecting columns 408 are fixedly installed at the four corners of the bottom of the dustproof curtain 407, and each connecting column 408 is respectively inserted into the movable groove 1 404 from the inner side of each movable groove 2 405, and one end of the inserted end is connected to a movable sleeve 409. The dustproof mechanism 4 also includes an annular skeleton 410, and the annular skeleton 410 passes through the inner side of each movable sleeve 409.

[0040] Among them, the opening and closing mechanism 5 includes a movable ring 501 installed between two support rods 401, the inner side size of the movable ring 501 is larger than the size of the total station 202, and four connecting rods 502 are installed in a circular array on the outer side of the movable ring 501. The connecting rods 502 are rotatably connected to the movable ring 501, and the other ends of the four connecting rods 502 are rotatably connected to four movable rods 403 respectively. The opening and closing mechanism 5 also includes sliding grooves 503 symmetrically opened on the two support rods 401, and sliding rods 504 are slidably installed on the inner sides of the sliding grooves 503. The top ends of the sliding rods 504 are fixedly connected to the movable rings 501, and the bottom ends of the sliding rods 504 pass through the lifting seat 201, and the ends that pass through are commonly connected to a movable plate 505.

[0041] Among them, a fixing groove 506 is set at the bottom of the lifting seat 201, and a spring 507 is installed inside the fixing groove 506. The bottom end of the spring 507 passes through the bottom of the fixing groove 506, and the two ends of the spring 507 are respectively against the top of the movable plate 505 and the top inner wall of the fixing groove 506.

[0042] Among them, the lifting mechanism 3 includes lifting grooves 301 opened on the inner walls on both sides of the protective groove 101, and the two ends of the movable plate 505 are respectively inserted into the two lifting grooves 301, and threaded rods 302 are installed inside the lifting grooves 301, and the threaded rods 302 and the movable plate 505 are threadedly connected.

[0043] Among them, the lifting mechanism 3 also includes a mounting groove 303 arranged inside the fixed column 1, and the bottom ends of the two threaded rods 302 are inserted into the mounting groove 303, and a dual-axis motor 304 is also installed in the mounting groove 303, and the two output ends of the dual-axis motor 304 are respectively connected to the two threaded rods 302 through a bevel gear set 305.

[0044] A moving block 6 is disposed at the bottom of the lifting seat 201 , and a moving groove 7 is disposed on the inner wall of the protection groove 101 . The moving block 6 penetrates into the moving groove 7 , and the moving block 6 is slidably connected to the moving groove 7 .

[0045] A sealing rubber ring 8 is provided on the bottom edge of the protective cover plate 406 .

[0046] A through drainage groove 9 is provided at the bottom of the inner wall of one side of the protection groove 101 .

[0047] A surveying and mapping method applicable to the above multifunctional geographic information surveying and mapping device, wherein the surveying and mapping steps are as follows:

[0048] S1: Start the double-axis motor 304 in the lifting mechanism 3, and the double-axis motor 304 drives the threaded rod 302 to rotate so that the movable plate 505 threadedly connected with the threaded rod 302 rises, and the movable plate 505 pushes the lifting seat 201 to rise synchronously so that the surveying and mapping mechanism 2 moves out from the top of the fixed column 1;

[0049] S2: After the moving block 6 moves to the top of the moving slot 7, the lifting seat 201 stops moving, and the threaded rod 302 continues to drive the movable plate 505 to rise. The movable plate 505 pushes the sliding rod 504 to move upward, and the sliding rod 504 pushes the movable ring 501 to move upward. The movable ring 501 pushes the movable rod 403 to flip through the connecting rod 502. During the flipping process of the movable rod 403, the dust curtain 407 moves up and is retracted until the total station 202 is exposed;

[0050] S3: Start the total station 202 to survey the detection points;

[0051] S4: After the surveying is completed, the dual-axis motor 304 reverses to move the movable plate 505 downward, and the elastic force of the spring 507 pushes the movable block 6 to remain at the top of the movable slot 7 until the dust curtain 407 is retracted, and then the lifting seat 201 and the movable plate 505 move synchronously downward into the protective slot 101.

[0052] Embodiment 1

[0053] Before using the present invention, a prism is first set at a position where detection is required, and the fixed column 1 of the present invention is installed at a geologically stable position, and it is ensured that there are no obstacles between the installation position of the fixed column 1 and the prism. Then, the total station 202 is installed on the lifting seat 201 of the present invention, and the external power supply and controller of the present invention are connected. The controller has a signal transmission module to facilitate remote control and uploading of measurement data of the total station 202. The external power supply is a battery, and the battery can be recharged by an external photovoltaic mechanism.

[0054] like Figure 4 , 8 As shown, in the non-surveying state, the total station 202 is located as a whole inside the protective groove 101, and the protective cover 406 closes the upper opening of the protective groove 101. The total station 202 is protected by the protective groove 101 and the protective cover 406, reducing the impact of weather and environmental factors on the total station 202.

[0055] like Figure 1 , 2 As shown in Figures 4 and 8, in the surveying state, the dual-axis motor 304 is started by an external controller, and the dual-axis motor 304 drives the two threaded rods 302 to rotate through the bevel gear set 305. During the rotation of the threaded rod 302, the movable plate 505 threadedly connected thereto rises. At the same time, under the action of the spring 507 installed between the movable plate 505 and the lifting seat 201, the distance between the movable plate 505 and the lifting seat 201 remains constant, so the lifting seat 201 will rise together with the movable plate 505. The lifting seat 201 drives the moving block 6 to move to the top of the moving slot 7 and then stops moving. At this time, the total station 202 leaves the protective slot 101 as a whole from the top of the fixed column 1.

[0056] like Figure 1 , 2 As shown in Figures 3, 4, and 6, the movable plate 505 will continue to rise as the threaded rod 302 rotates, so that the movable plate 505 can drive the sliding rod 504 to move upward relative to the lifting seat 201, and the sliding rod 504 drives the movable ring 501 to move upward. During the upward movement of the movable ring 501, the connecting rod 502 can push each movable rod 403 to flip outward.

[0057] like Figure 1 , 3, 4, 5, 6, and 7, in the initial state, the bottom end of the movable rod 403 is tilted outward, at which time the annular frame 410 and the movable sleeve 409 are located at the bottom of the movable groove 404, and at the same time, the bottom end of the dust curtain 407 is kept at the bottom end of the movable rod 403 with the movable sleeve 409, and the total station 202 located between the fixed plate 402 and the lifting seat 201 is covered by the dust curtain 407, thereby reducing the amount of dust attached to the total station 202. When the movable rod 403 is turned outward, each movable groove 404 04, while the size of the annular skeleton 410 is fixed, the annular skeleton 410 will slide toward the top with a smaller spacing in the movable groove 404, and drive the dust curtain 407 to rise upward until the movable rod 403 is flipped to a nearly horizontal position, and the dust curtain 407 gathers on the outside of the fixed plate 402. At the same time, the total station 202 is completely exposed, and the prism at the monitoring point can be surveyed and mapped. After the surveying and mapping is completed, the measured data is uploaded to the cloud by an external controller.

[0058] like Figure 1-8 As shown, after the measurement is completed, the dual-axis motor 304 reverses and drives the movable plate 505 to move downward through the threaded rod 302. Under the elastic action of the spring 507, the movable block 6 continues to remain at the top of the movable groove 7, so the movable plate 505 will move downward relative to the lifting seat 201. During the downward movement of the movable plate 505, the movable ring 501 is pulled downward by the sliding rod 504, and the movable ring 501 pulls the movable rod 403 to flip inward through the connecting rod 502. At the same time, the annular skeleton 410 moves downward to drive the bottom of the dust-proof curtain 407 to move downward until the dust-proof curtain 407 covers the total station 202 again. Then, the lifting seat 201 moves downward with the movable plate 505 to put the total station 202 into the protective groove 101. At the same time, the protective cover plate 406 re-closes the top opening of the protective groove 101 to improve the waterproof performance in the protective groove 101.

[0059] Embodiment 2

[0060] like Figure 1-2 As shown, a drainage groove 9 is provided at the bottom of the inner wall on one side of the protection groove 101, so as to discharge a small amount of rainwater that invades into the protection groove 101 during the surveying process. The opening height of the drainage groove 9 at one end of the outer surface of the fixed column 1 is lower than the opening height on one side of the protection groove 101, so as to prevent rainwater from invading the protection groove 101 from the outer opening of the drainage groove 9.

[0061] like Figure 1 , 2 As shown in FIG. 8 , a baffle is provided around the protective groove 101 at the top of the fixed column 1 so that the top opening of the protective groove 101 is higher than the top side surface of the fixed column 1 , thereby reducing the possibility of rainwater flooding the opening of the protective groove 101 and invading the protective groove 101 .

[0062] An anemometer and a flow meter may be provided to monitor the wind and rainfall near the fixed column 1 , so that surveying and mapping at the monitoring point may be stopped in extreme weather conditions such as strong winds and heavy rains, to prevent damage to the total station 202 caused by extreme weather conditions.

[0063] The embodiments of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A multifunctional geographic information surveying and mapping device, comprising a fixed column (1), a surveying and mapping mechanism (2), a lifting mechanism (3), a dust prevention mechanism (4) and an opening and closing mechanism (5), characterized in that: A protective groove (101) is provided on the top of the fixing column (1); The surveying and mapping mechanism (2) comprises a lifting seat (201) and a total station (202), wherein the lifting seat (201) is installed in the protection groove (101), and the total station (202) is installed on the top of the lifting seat (201); The dustproof mechanism (4) comprises two support rods (401) symmetrically arranged on the top of the lifting seat (201), the tops of the two support rods (401) are commonly connected to a fixed plate (402), the four corners of the fixed plate (402) are rotatably mounted with movable rods (403), the movable rod (403) is provided with a movable groove 1 (404) running through it, the outer surface of the movable rod (403) is provided with a movable groove 2 (405), the top of the fixed plate (402) is also provided with a protective cover plate (406), the A dustproof curtain (407) is installed between the protective cover plate (406) and the fixed plate (402), and connecting columns (408) are fixedly installed at the four corners of the bottom of the dustproof curtain (407). Each connecting column (408) is respectively inserted into the movable groove one (404) from the inner side of each movable groove two (405), and one end of the inserted end is connected to a movable sleeve (409). The dustproof mechanism (4) also includes an annular frame (410), and the annular frame (410) passes through the inner side of each movable sleeve (409).

2. The multifunctional geographic information surveying and mapping device according to claim 1, characterized in that: The opening and closing mechanism (5) includes a movable ring (501) installed between the two support rods (401), and four connecting rods (502) are installed in a circular array on the outer side of the movable ring (501), and the other ends of the four connecting rods (502) are rotatably connected to the four movable rods (403) respectively. The opening and closing mechanism (5) also includes a slide groove (503) symmetrically opened on the two support rods (401), and the inner side of the slide groove (503) is slidably installed with a slide rod (504), the top end of the slide rod (504) is fixedly connected to the movable ring (501), and the bottom end of the slide rod (504) passes through the lifting seat (201), and the penetrating end is commonly connected to a movable plate (505).

3. The multifunctional geographic information surveying and mapping device according to claim 2, characterized in that: A fixing groove (506) is provided at the bottom of the lifting seat (201), and a spring (507) is installed inside the fixing groove (506). The bottom end of the spring (507) passes through the bottom of the fixing groove (506), and the two ends of the spring (507) are respectively against the top of the movable plate (505) and the top inner wall of the fixing groove (506).

4. The multifunctional geographic information surveying and mapping device according to claim 1, characterized in that: The lifting mechanism (3) comprises lifting grooves (301) opened on the inner walls on both sides of the protective groove (101), and the two ends of the movable plate (505) are respectively inserted into the two lifting grooves (301), and the interior of the lifting grooves (301) is installed with a threaded rod (302), and the threaded rod (302) and the movable plate (505) are threadedly connected.

5. The multifunctional geographic information surveying and mapping device according to claim 4, characterized in that: The lifting mechanism (3) further comprises a mounting groove (303) arranged inside the fixing column (1), and the bottom ends of the two threaded rods (302) are both inserted into the mounting groove (303), a dual-axis motor (304) is also installed in the mounting groove (303), and the two output ends of the dual-axis motor (304) are respectively connected to the two threaded rods (302) through a bevel gear set (305).

6. The multifunctional geographic information surveying and mapping device according to claim 1, characterized in that: A moving block (6) is arranged at the bottom of the lifting seat (201), a moving groove (7) is arranged on the inner wall of the protective groove (101), the moving block (6) penetrates into the moving groove (7), and the moving block (6) is slidably connected to the moving groove (7).

7. The multifunctional geographic information surveying and mapping device according to claim 1, characterized in that: A sealing rubber ring (8) is provided on the bottom edge of the protective cover plate (406).

8. The multifunctional geographic information surveying and mapping device according to claim 1, characterized in that: A through drainage groove (9) is provided at the bottom of the inner wall of one side of the protection groove (101).

9. A surveying and mapping method applied to a multifunctional geographic information surveying and mapping device, characterized in that: The surveying steps are as follows: S1: starting the double-axis motor (304) in the lifting mechanism (3), and the double-axis motor (304) drives the threaded rod (302) to rotate so that the movable plate (505) threadedly connected to the threaded rod (302) rises, and the movable plate (505) pushes the lifting seat (201) to rise synchronously so that the surveying and mapping mechanism (2) moves out from the top of the fixed column (1); S2: After the moving block (6) moves to the top of the moving groove (7), the lifting seat (201) stops moving, and the threaded rod (302) continues to drive the movable plate (505) to rise, and the movable plate (505) pushes the sliding rod (504) to move upward, and the sliding rod (504) pushes the movable ring (501) to move upward, and the movable ring (501) pushes the movable rod (403) to flip through the connecting rod (502), and the dust curtain (407) is moved up and retracted during the flipping process of the movable rod (403) until the total station (202) is exposed; S3: Start the total station (202) to survey and map the detection points; S4: After the surveying and mapping is completed, the dual-axis motor (304) is reversed to move the movable plate (505) downward, and the elastic force of the spring (507) pushes the movable block (6) to remain at the top of the movable groove (7) until the dust curtain (407) is retracted, and then the lifting seat (201) and the movable plate (505) are synchronously moved downward into the protective groove (101).

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