A three-dimensional digital topographic map surveying and mapping device and surveying and mapping method thereof

Abstract

The present invention belongs to the technical field of surveying and mapping devices, and discloses a three-dimensional digital topographic mapping device and a surveying and mapping method thereof, comprising a surveying instrument, a protective component is arranged on the outside of the surveying instrument, a supporting structure is installed on the bottom end of the surveying instrument, the protective component comprises a top plate and a side plate arranged on the outside of the supporting structure, two side plates are symmetrically arranged, the top plate and the side plates are connected by a lifting component, and first protective plates are installed on both sides of the top plate by a moving component. When the three-dimensional digital topographic mapping device is used, the surveying and mapping device is protected by the top plate, the side plate and the first protective plate, so that when the device is used in rainy days or under strong sunlight, not only rainwater is prevented from intruding into the interior of the device, but also sunlight is prevented from directly irradiating on the surface of the surveying and mapping device to cause overheating, deformation or glare of the lens, thereby ensuring the accuracy of surveying and mapping and the service life of the device.

Description

Technical Field

[0001] The present invention belongs to the technical field of surveying and mapping devices, and in particular relates to a three-dimensional digital topographic map surveying and mapping device and a surveying and mapping method thereof. Background Art

[0002] The three-dimensional digital topographic mapping device mainly uses laser radar technology to collect surface elevation data, combines photogrammetry technology to capture surface texture and morphological features, and integrates the geographic coordinate information provided by the GPS system to draw a high-precision three-dimensional digital topographic map;

[0003] The three-dimensional digital topographic mapping device is mainly composed of a mapping instrument and a supporting structure. When in use, the mapping instrument needs to be installed on the top of the supporting structure;

[0004] However, since the surveying instrument contains many electronic components, the device is easily damaged when used in outdoor environments, especially in rainy days or strong sunlight. Rainwater may penetrate into the equipment, causing performance degradation or even damage; direct sunlight may cause the lens to overheat, deform or produce glare, which will not only reduce the accuracy of surveying, but also shorten the service life of the equipment. Summary of the invention

[0005] The purpose of the present invention is to provide a three-dimensional digital topographic map surveying and mapping device and a surveying and mapping method thereof to solve the problems raised in the above background technology.

[0006] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: A three-dimensional digital topographic mapping device comprises a mapping instrument, a protective component is arranged on the outside of the mapping instrument, and a supporting structure is installed at the bottom of the mapping instrument;

[0007] Among them, the protective assembly includes a top plate and side plates arranged outside the supporting structure, and two side plates are symmetrically arranged. The top plate and the side plates are connected by a lifting assembly, and the first protective plates are installed on both sides of the top plate through a moving assembly.

[0008] As a further technical solution of the present invention, the lifting assembly includes a connecting plate slidably installed inside the side plate, the connecting plate is fixedly installed at the bottom end of the top plate, the internal thread of the connecting plate is connected to a first threaded rod, and a motor is installed at the bottom end of the first threaded rod.

[0009] As a further technical solution of the present invention, the moving component includes a second threaded rod rotatably installed inside the top plate, the second threaded rod is embedded in the first protective plate, the second threaded rod is threadedly connected to the first protective plate, a second bevel gear is fixedly installed on the outer wall of the second threaded rod, the bottom end of the second bevel gear is meshingly connected with the first bevel gear, the bottom end of the first bevel gear is fixedly installed with a first rotating shaft, a transmission shaft is embedded in the interior of the first rotating shaft, and the transmission shaft is fixedly installed on the top end of the first threaded rod.

[0010] As a further technical solution of the present invention, the first rotating shaft is slidably connected to the transmission shaft.

[0011] As a further technical solution of the present invention, a fixing plate and a second protecting plate are installed on both sides of the bottom end of the first protecting plate, a third protecting plate is installed between the fixing plate and the second protecting plate, and the second protecting plate is fixedly connected to the first protecting plate.

[0012] As a further technical solution of the present invention, a sliding block is slidably connected inside the fixed plate, and the sliding block is fixedly mounted on the side wall of the side plate.

[0013] As a further technical solution of the present invention, second heat dissipation holes are evenly opened inside the connecting plate, first heat dissipation holes are evenly opened inside the side plate, and a control component is arranged inside the side plate.

[0014] As a further technical solution of the present invention, the control component includes a baffle plate arranged inside the side panel, the baffle plates are evenly distributed, and each of the baffle plates is rotatably connected to the side panel through a second rotating shaft. A gear is fixedly installed on the outer wall of the second rotating shaft, and a rack plate is meshedly connected to one side of the gear, and a movable plate is fixedly connected to the top of the rack plate.

[0015] As a further technical solution of the present invention, the movable plate is slidably installed inside the side plate, and a spring is installed between the movable plate and the side plate.

[0016] A surveying and mapping method of a three-dimensional digital topographic map surveying and mapping device comprises the following steps:

[0017] S1: When the three-dimensional digital topographic mapping device is used, first install the mapping device to the bottom of the mapping device, and then install the top plate and side plates to the outside of the mapping device.

[0018] S2: Then, according to the actual application situation, it is selected whether to adjust the height. When adjusting, the motor can be started to drive the first threaded rod to rotate. The rotation of the first threaded rod drives the connecting plate to move upward inside the side plate. The movement of the connecting plate drives the movement of the top plate. The movement of the top plate drives the movement of the first protective plate, so that the top plate and the first protective plate rise.

[0019] S3: When the top plate moves up, the connecting plate slides in the side plate, and when the bottom of the connecting plate contacts the moving plate, the moving plate is driven to move up, and the movement of the moving plate drives the movement of the rack plate, and the movement of the rack plate drives the rotation of the gear, and the rotation of the gear drives the rotation of the second rotating shaft, and the rotation of the second rotating shaft drives the rotation of the baffle plate, so that the multiple baffle plates are tilted downward to reduce the entry of external rainwater;

[0020] S4: When the first threaded rod rotates, the transmission shaft is driven to rotate, the rotation of the transmission shaft drives the rotation of the first rotating shaft, the rotation of the first rotating shaft drives the rotation of the first bevel gear, the rotation of the first bevel gear drives the rotation of the second bevel gear, and the rotation of the second bevel gear drives the rotation of the second threaded rod, so that the two first protective plates slide outward;

[0021] S5: When the first protective plate moves outward and unfolds, the movement of the first protective plate drives the movement of the second protective plate, and the movement of the second protective plate pulls one end of the third protective plate to unfold it for use. Finally, the top plate, side plate, first protective plate, second protective plate and third protective plate cooperate to provide large-area protection for the surveying and mapping instrument.

[0022] The beneficial effects of the present invention are as follows:

[0023] 1. The present invention provides a protective component. When the three-dimensional digital topographic mapping device is in use, the top plate, the side plate and the first protective plate are used to protect the mapping device. When the device is used in rainy days or under strong sunlight, it not only prevents rainwater from intruding into the device, but also prevents sunlight from directly shining on the surface of the mapping device to cause overheating, deformation or glare of the lens, thereby ensuring the accuracy of mapping and the service life of the device.

[0024] 2. Through the setting of the lifting component, the present invention can drive the first threaded rod to rotate by starting the motor when protecting the surveying instrument. The rotation of the first threaded rod drives the connecting plate to move upward inside the side plate. The movement of the connecting plate drives the movement of the top plate. The movement of the top plate drives the movement of the first protective plate, so that the top plate and the first protective plate rise, so that the device can be flexibly adjusted according to weather changes or actual needs. On rainy days, the protective plate can be lowered to block rain; on sunny days, the protective plate can be raised to adjust the shading angle for measurement, thereby improving the adaptability of the device.

[0025] 3. The present invention arranges a moving component so that when the first threaded rod rotates, the transmission shaft is driven to rotate, the rotation of the transmission shaft drives the rotation of the first rotating shaft, the rotation of the first rotating shaft drives the rotation of the first bevel gear, the rotation of the first bevel gear drives the rotation of the second bevel gear, and the rotation of the second bevel gear drives the rotation of the second threaded rod, so that the two first protective plates slide outward, adjust the range of sunshade or rain protection, and improve the protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention;

[0028] Figure 3 It is a schematic diagram of the structure of the top plate and the side plate of the present invention;

[0029] Figure 4 It is a schematic diagram of the cross-section of the structure of the top plate and the side plate of the present invention;

[0030] Figure 5 For the present invention Figure 4 A schematic diagram of the structure enlargement in the middle;

[0031] Figure 6 This is a schematic diagram of the structure of the first protective plate and the second protective plate of the present invention;

[0032] Figure 7 It is a schematic diagram of the cross-section of the structure of the side plate of the present invention;

[0033] Figure 8 For the present invention Figure 7 Enlarged schematic diagram of the structure at point B in the middle.

[0034] In the figure: 1. surveying instrument; 2. supporting structure; 3. top plate; 4. side plate; 5. first protective plate; 6. connecting plate; 7. motor; 8. first threaded rod; 9. transmission shaft; 10. first rotating shaft; 11. first bevel gear; 12. second bevel gear; 13. second threaded rod; 14. fixing plate; 15. second protective plate; 16. third protective plate; 17. slider; 18. first heat dissipation hole; 19. second heat dissipation hole; 20. baffle; 21. second rotating shaft; 22. gear; 23. rack plate; 24. moving plate; 25. spring. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] like Figures 1 to 8 As shown, in an embodiment of the present invention, a three-dimensional digital topographic mapping device includes a mapping instrument 1, a protective component is arranged outside the mapping instrument 1, and a supporting structure 2 is installed at the bottom end of the mapping instrument 1;

[0037] Among them, the protective assembly includes a top plate 3 and a side plate 4 arranged outside the supporting structure 2, two side plates 4 are symmetrically arranged, the top plate 3 and the side plates 4 are connected by a lifting assembly, and the first protective plates 5 are installed on both sides of the top plate 3 through a moving assembly.

[0038] By setting the protective components, when the three-dimensional digital topographic mapping device is in use, the top plate 3, the side plate 4 and the first protective plate 5 are used to protect the mapping instrument 1, so that when the device is used in rainy days or under strong sunlight, it can not only prevent rainwater from intruding into the equipment, but also prevent sunlight from directly shining on the surface of the mapping instrument 1 to cause overheating, deformation or glare of the lens, thereby ensuring the accuracy of the mapping and the service life of the device.

[0039] The side plate 4 is slidably connected to the side wall of the surveying and mapping instrument 1, so as to facilitate its installation and disassembly.

[0040] like Figure 3 and Figure 6 As shown, the lifting assembly includes a connecting plate 6 slidably mounted inside the side plate 4, the connecting plate 6 is fixedly mounted on the bottom end of the top plate 3, the internal thread of the connecting plate 6 is connected to a first threaded rod 8, and a motor 7 is mounted on the bottom end of the first threaded rod 8.

[0041] By setting the lifting component, when protecting the surveying instrument 1, the first threaded rod 8 can be driven to rotate by starting the motor 7. The rotation of the first threaded rod 8 drives the connecting plate 6 to move upward inside the side plate 4. The movement of the connecting plate 6 drives the movement of the top plate 3. The movement of the top plate 3 drives the movement of the first protective plate 5, so that the top plate 3 and the first protective plate 5 rise, so that the device can be flexibly adjusted according to weather changes or actual needs. On rainy days, the protective plate can be lowered to block rain; on sunny days, the protective plate can be raised to adjust the shading angle for measurement, thereby improving the adaptability of the device.

[0042] like Figure 3 and Figure 4 As shown, the moving assembly includes a second threaded rod 13 rotatably mounted inside the top plate 3, the second threaded rod 13 is embedded inside the first protective plate 5, the second threaded rod 13 is threadedly connected to the first protective plate 5, a second bevel gear 12 is fixedly mounted on the outer wall of the second threaded rod 13, the bottom end of the second bevel gear 12 is meshingly connected with the first bevel gear 11, a first rotating shaft 10 is fixedly mounted on the bottom end of the first bevel gear 11, a transmission shaft 9 is embedded inside the first rotating shaft 10, and the transmission shaft 9 is fixedly mounted on the top end of the first threaded rod 8.

[0043] Two threads are arranged on the outer wall of the second threaded rod 13, and the two threads are arranged in opposite directions, so as to enable the two first protection plates 5 inside the top plate 3 to move relative to each other;

[0044] Through the setting of the moving component, when the first threaded rod 8 rotates, the transmission shaft 9 is driven to rotate, the rotation of the transmission shaft 9 drives the rotation of the first rotating shaft 10, the rotation of the first rotating shaft 10 drives the rotation of the first bevel gear 11, the rotation of the first bevel gear 11 drives the rotation of the second bevel gear 12, and the rotation of the second bevel gear 12 drives the rotation of the second threaded rod 13, so that the two first protective plates 5 slide outward, adjust the range of sunshade or rain protection, and improve the protection effect.

[0045] like Figure 7 As shown, the first rotating shaft 10 and the transmission shaft 9 are slidingly connected.

[0046] When the top plate 3 moves upward, the first rotating shaft 10 slides on the outer wall of the transmission shaft 9, so that during the upward movement of the top plate 3, the first threaded rod 8 drives the first rotating shaft 10 to rotate through the transmission shaft 9, and the top plate 3 rises while the first protective plate 5 moves outward to open.

[0047] like Figure 1 , Figure 2 , Figures 3 to 5 As shown, a fixing plate 14 and a second protecting plate 15 are installed on both sides of the bottom end of the first protecting plate 5 , a third protecting plate 16 is installed between the fixing plate 14 and the second protecting plate 15 , and the second protecting plate 15 is fixedly connected to the first protecting plate 5 .

[0048] By setting the fixed plate 14, the second protective plate 15 and the third protective plate 16, the side of the surveying instrument 1 is protected, and the top plate 3, the side plate 4 and the first protective plate 5 are cooperated to improve the comprehensiveness of the protection, thereby further improving the protection effect.

[0049] The third protective plate 16 is configured as a flexible fabric, such as a waterproof coated fabric or a PVC fabric, which has good waterproof performance and softness;

[0050] When the first protective plate 5 moves outward to be unfolded, the movement of the first protective plate 5 drives the movement of the second protective plate 15 , and the movement of the second protective plate 15 pulls one end of the third protective plate 16 to unfold it for use, thereby protecting the surveying instrument 1 .

[0051] like Figure 5 , Figure 6 and Figure 7 As shown, a slider 17 is slidably connected inside the fixed plate 14 , and the slider 17 is fixedly mounted on the side wall of the side plate 4 .

[0052] When the top plate 3 moves upward, the top plate 3 drives the movement of the fixed plate 14, and the fixed plate 14 slides on the outer wall of the slider 17. The fixed plate 14 is connected by the slider 17, so that the fixed plate 14 is always located on the side of the connecting plate 6 during the upward movement of the top plate 3. When the first protective plate 5 moves outward, the fixed plate 14 is limited by the slider 17, so that the fixed plate 14 is also located on one side of the connecting plate 6, so as to ensure the stability and reliability of the third protective plate 16 when it is unfolded.

[0053] like Figure 5 , Figure 6 and Figure 7 As shown, the second heat dissipation holes 19 are evenly opened inside the connecting plate 6 , the first heat dissipation holes 18 are evenly opened inside the side plate 4 , and a control component is arranged inside the side plate 4 .

[0054] The first heat dissipation holes 18 and the second heat dissipation holes 19 enable the device to dissipate heat normally.

[0055] like Figure 6 , Figure 7 and Figure 8 As shown, the control component includes a baffle 20 arranged inside the side plate 4, the baffles 20 are evenly distributed, and each baffle 20 is rotatably connected to the side plate 4 through a second rotating shaft 21. A gear 22 is fixedly installed on the outer wall of the second rotating shaft 21, and a rack plate 23 is meshedly connected to one side of the gear 22, and a movable plate 24 is fixedly connected to the top of the rack plate 23.

[0056] Through the setting of the control component, when the top plate 3 moves up, the connecting plate 6 slides in the side plate 4, and when the bottom of the connecting plate 6 contacts the movable plate 24, the movable plate 24 is driven to move up, and the movement of the movable plate 24 drives the movement of the rack plate 23, and the movement of the rack plate 23 drives the rotation of the gear 22, and the rotation of the gear 22 drives the rotation of the second rotating shaft 21, and the rotation of the second rotating shaft 21 drives the rotation of the baffle 20, so that the multiple baffles 20 are tilted downward, and the possibility of external rainwater entering is reduced under the premise of ensuring air circulation to dissipate heat.

[0057] like Figure 8 As shown, the moving plate 24 is slidably installed inside the side plate 4, and a spring 25 is installed between the moving plate 24 and the side plate 4.

[0058] When the connecting plate 6 moves upward and drives the movable plate 24 upward, the spring 25 deforms and stores elastic potential energy. When the connecting plate 6 moves downward and separates from the movable plate 24, the elastic potential energy is released by the spring 25 to reset the movable plate 24, thereby rotating and resetting the baffle 20, opening the heat dissipation channel to the maximum for heat dissipation.

[0059] A surveying and mapping method of a three-dimensional digital topographic map surveying and mapping device comprises the following steps:

[0060] S1: When the three-dimensional digital topographic mapping device is used, the mapping instrument 1 is first installed to the bottom of the mapping instrument 1, and then the top plate 3 and the side plate 4 are installed to the outside of the mapping instrument 1.

[0061] S2: Then, it is selected whether to adjust the height according to the actual application situation. When adjusting, the motor 7 can be started to drive the first threaded rod 8 to rotate. The rotation of the first threaded rod 8 drives the connecting plate 6 to move upward inside the side plate 4. The movement of the connecting plate 6 drives the movement of the top plate 3. The movement of the top plate 3 drives the movement of the first protective plate 5, so that the top plate 3 and the first protective plate 5 rise;

[0062] S3: When the top plate 3 moves upward, the connecting plate 6 slides in the side plate 4, and when the bottom of the connecting plate 6 contacts the moving plate 24, the moving plate 24 is driven to move upward, and the movement of the moving plate 24 drives the movement of the rack plate 23, and the movement of the rack plate 23 drives the rotation of the gear 22, and the rotation of the gear 22 drives the rotation of the second rotating shaft 21, and the rotation of the second rotating shaft 21 drives the rotation of the baffle 20, so that the multiple baffles 20 are tilted downward to reduce the entry of external rainwater;

[0063] S4: When the first threaded rod 8 rotates, the transmission shaft 9 is driven to rotate, the rotation of the transmission shaft 9 drives the first rotating shaft 10 to rotate, the rotation of the first rotating shaft 10 drives the first bevel gear 11 to rotate, the rotation of the first bevel gear 11 drives the second bevel gear 12 to rotate, the rotation of the second bevel gear 12 drives the second threaded rod 13 to rotate, so that the two first protective plates 5 slide outward;

[0064] S5: When the first protective plate 5 moves outward and unfolds, the movement of the first protective plate 5 drives the movement of the second protective plate 15, and the movement of the second protective plate 15 pulls one end of the third protective plate 16 to unfold it for use. Finally, the top plate 3, the side plate 4, the first protective plate 5, the second protective plate 15 and the third protective plate 16 cooperate to protect the surveying instrument 1 over a large area.

[0065] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A three-dimensional digital topographic mapping device, comprising a mapping instrument (1), characterized in that: The exterior of the surveying instrument (1) is provided with a protective component, and the bottom end of the surveying instrument (1) is installed with a supporting structure (2); The protective assembly comprises a top plate (3) and a side plate (4) arranged outside the support structure (2), two side plates (4) are symmetrically arranged, the top plate (3) and the side plates (4) are connected by a lifting assembly, and first protective plates (5) are installed on both sides of the top plate (3) by a moving assembly.

2. A three-dimensional digital topographic mapping device according to claim 1, characterized in that: The lifting assembly comprises a connecting plate (6) slidably mounted inside the side plate (4), the connecting plate (6) being fixedly mounted on the bottom end of the top plate (3), the internal thread of the connecting plate (6) being connected to a first threaded rod (8), and a motor (7) being mounted on the bottom end of the first threaded rod (8).

3. A three-dimensional digital topographic mapping device according to claim 1, characterized in that: The moving assembly comprises a second threaded rod (13) rotatably mounted inside the top plate (3), the second threaded rod (13) being embedded inside the first protective plate (5), the second threaded rod (13) being threadedly connected to the first protective plate (5), a second bevel gear (12) being fixedly mounted on the outer wall of the second threaded rod (13), the bottom end of the second bevel gear (12) being meshingly connected with the first bevel gear (11), a first rotating shaft (10) being fixedly mounted on the bottom end of the first bevel gear (11), a transmission shaft (9) being embedded inside the first rotating shaft (10), and the transmission shaft (9) being fixedly mounted on the top end of the first threaded rod (8).

4. A three-dimensional digital topographic mapping device according to claim 3, characterized in that: The first rotating shaft (10) is slidably connected to the transmission shaft (9).

5. The three-dimensional digital topographic mapping device according to claim 1, characterized in that: A fixing plate (14) and a second protecting plate (15) are installed on both sides of the bottom end of the first protecting plate (5), a third protecting plate (16) is installed between the fixing plate (14) and the second protecting plate (15), and the second protecting plate (15) is fixedly connected to the first protecting plate (5).

6. A three-dimensional digital topographic mapping device according to claim 5, characterized in that: The interior of the fixed plate (14) is slidably connected with a slider (17), and the slider (17) is fixedly mounted on the side wall of the side plate (4).

7. A three-dimensional digital topographic mapping device according to claim 2, characterized in that: The connection plate (6) is evenly provided with second heat dissipation holes (19), the side plate (4) is evenly provided with first heat dissipation holes (18), and a control component is arranged inside the side plate (4).

8. A three-dimensional digital topographic mapping device according to claim 7, characterized in that: The control assembly comprises a baffle (20) arranged inside the side plate (4), the baffles (20) are evenly distributed, each of the baffles (20) is rotatably connected to the side plate (4) via a second rotating shaft (21), a gear (22) is fixedly mounted on the outer wall of the second rotating shaft (21), one side of the gear (22) is meshingly connected to a rack plate (23), and the top end of the rack plate (23) is fixedly connected to a moving plate (24).

9. A three-dimensional digital topographic mapping device according to claim 8, characterized in that: The movable plate (24) is slidably mounted inside the side plate (4), and a spring (25) is mounted between the movable plate (24) and the side plate (4).

10. A surveying and mapping method for a three-dimensional digital topographic mapping device, the method being applicable to a three-dimensional digital topographic mapping device as claimed in claims 1 to 9, characterized in that: The following steps are involved: S1: When the three-dimensional digital topographic mapping device is used, the mapping device (1) is first installed to the bottom of the mapping device (1), and then the top plate (3) and the side plate (4) are installed to the outside of the mapping device (1). S2: Then, according to the actual application situation, it is selected whether to adjust the height. When adjusting, the motor (7) can be started to drive the first threaded rod (8) to rotate. The rotation of the first threaded rod (8) drives the connecting plate (6) to move upward inside the side plate (4). The movement of the connecting plate (6) drives the movement of the top plate (3). The movement of the top plate (3) drives the movement of the first protective plate (5), so that the top plate (3) and the first protective plate (5) rise. S3: When the top plate (3) moves upward, the connecting plate (6) slides inside the side plate (4), and when the bottom of the connecting plate (6) contacts the moving plate (24), the moving plate (24) is driven to move upward, and the movement of the moving plate (24) drives the movement of the rack plate (23), and the movement of the rack plate (23) drives the rotation of the gear (22), and the rotation of the gear (22) drives the rotation of the second rotating shaft (21), and the rotation of the second rotating shaft (21) drives the rotation of the baffle plate (20), so that the multiple baffle plates (20) are tilted downward, thereby reducing the entry of external rainwater; S4: When the first threaded rod (8) rotates, the transmission shaft (9) is driven to rotate, the rotation of the transmission shaft (9) drives the first rotating shaft (10) to rotate, the rotation of the first rotating shaft (10) drives the first bevel gear (11) to rotate, the rotation of the first bevel gear (11) drives the second bevel gear (12) to rotate, the rotation of the second bevel gear (12) drives the second threaded rod (13) to rotate, so that the two first protective plates (5) slide outward; S5: When the first protective plate (5) moves outward and unfolds, the movement of the first protective plate (5) drives the movement of the second protective plate (15), and the movement of the second protective plate (15) pulls one end of the third protective plate (16) to unfold it for use. Finally, the top plate (3), the side plate (4), the first protective plate (5), the second protective plate (15) and the third protective plate (16) cooperate to provide a large-area protection for the surveying instrument (1).

Images