Land surveying and mapping instrument with protection function
By designing a protective box with automated opening and closing components and heat dissipation protection components, the protection and heat dissipation problems of surveying and mapping instruments in complex environments are solved, automated operation and equipment life are extended, and the probability of failure and maintenance costs are reduced.
Patent Information
- Application Number
- CN202511149956.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-18
- Publication Date
- 2025-09-30
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The protective devices of existing surveying and mapping instruments are inconvenient to operate, have poor heat dissipation effects, and cannot adapt to complex environments. It is difficult to strike a balance between protection and convenience, resulting in easy damage to the instruments and loss of accuracy.
A protective box with an opening and closing component and a heat dissipation protection component is designed. The instrument is automatically opened and closed by a motor-driven gear system. Combined with an automatic heat dissipation fan and a sealing structure, the instrument is completely stored when not in use and automatically dissipates heat when in use.
It realizes automatic protection and heat dissipation of the instrument in complex environments, reduces operating steps, extends equipment life, reduces failure probability and maintenance costs, and improves field operation efficiency.
Smart Images
Figure CN120721052A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of land surveying and mapping equipment, and in particular relates to a land surveying and mapping instrument with a protective function. Background Art
[0002] Land surveying and mapping instruments are professional equipment used for measuring, collecting, processing and analyzing land and related geographic information. They are widely used in land resources surveys, urban planning, engineering construction, cadastral management and other fields. Their core function is to obtain geographic data such as the spatial position, shape, elevation, and boundaries of land, providing accurate data support for the rational use of land resources, planning and design, and property rights management.
[0003] Surveying and mapping instrument optical lenses (such as the objective lens of a total station and the eyepiece of a level), precision sensors, and mechanical transmission components are extremely fragile. During transfer, they can be easily damaged by bumps, drops, or squeezing, leading to lens shattering, sensor failure, or gear misalignment, directly resulting in instrument failure or permanent loss of accuracy. Existing surveying and mapping instrument protection systems on the market mostly consist of simple dust covers or fixed protective boxes. While these offer some protection, they are inconvenient to operate, have poor heat dissipation, and are unable to adapt to complex environments. Traditional protective boxes are often integrated, requiring manual intervention to open and preventing automated operation. Fixed protective structures struggle to strike a balance between protection and convenience. Summary of the Invention
[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a land surveying and mapping instrument with a protective function.
[0005] The technical solution adopted to solve the above technical problems is: a land surveying and mapping instrument with a protective function, including a mounting and fixing platform, a protective box is fixedly installed on the upper end of the mounting and fixing platform, mounting grooves are symmetrically opened on one side of the protective box, limiting grooves are symmetrically opened on one side of the protective box, heat dissipation grooves are symmetrically opened on both sides of the protective box, heat dissipation protection components are respectively arranged in the two heat dissipation grooves, and sliding grooves are symmetrically opened on both sides of the protective box; an opening and closing component is installed on one side of the protective box, a surveying and mapping instrument component is fixedly installed in the protective box, and a balance support component is fixedly connected to the lower end of the mounting and fixing platform.
[0006] Furthermore, the opening and closing assembly includes two central shafts rotatably connected to the protective box, the two central shafts are symmetrically arranged on one side of the protective box, and L-shaped rods are fixedly connected to the two central shafts respectively, and the adjacent sides of the two L-shaped rods are fixedly connected to the driving gear and the driven gear respectively, and the driven gear and the driven gear are meshed with each other. One end of the central shaft is fixedly connected to the driving motor, the driving motor is fixedly connected to the motor protective shell, and the motor protective shell is fixedly installed on the protective box, and the L-shaped rod is rotatably connected to the movable cover at one end away from the driving gear, and is slidably connected to the upper end of the protective box. One side of the movable cover is rotatably connected to an auxiliary connecting rod, and the auxiliary connecting rod is rotatably connected to the protective box at one end away from the moving cover.
[0007] Through the above technical solution, the driving motor drives the driving gear on one side to rotate, and the driving gear drives the driven gear on the other side to move through engagement. The driving gear and the driven gear respectively drive the corresponding L-shaped rods to rotate around the central axis, so that the movable covers on both sides slide to both sides at the same time, thereby opening the protective box.
[0008] Furthermore, one side of the L-shaped rod is rotatably connected to a first connecting rod, the first connecting rod is rotatably connected to a second connecting rod on the side away from the driving gear, the second connecting rod is rotatably connected to the mobile platform at one end away from the first connecting rod, the mobile platform is slidably connected to the protective box, a limiting column is fixedly connected to the second connecting rod, and the limiting column and the limiting groove are slidably connected.
[0009] Through the above technical solution, the driving motor transmits power to the first connecting rod synchronously while driving the L-shaped rod to rotate. The rotation of the first connecting rod drives the second connecting rod to rotate. Through the mutual cooperation between the first connecting rod and the second connecting rod, the second connecting rod drives the movable platform to slide upward along the direction of the limit groove, so that the surveying and mapping instrument assembly on the movable platform is synchronously raised to the outside of the protective box when the movable cover is opened. When not in use, the surveying and mapping instrument assembly can be completely stored in the protective box. The movable cover is closed to form a sealed space, which can isolate dust, water vapor, insects and external force collisions, and protect core components such as optical lenses from erosion or physical damage. When in use, it is raised out of the protective box and is only exposed to the external environment during the working phase, reducing unnecessary exposure time.
[0010] Furthermore, the heat dissipation protection assembly includes a fixed frame fixedly installed between the heat dissipation groove, a protective fan cover is rotatably connected to one side of the fixed frame, a fixed shaft is fixedly connected to the center position of the protective fan cover, a connecting gear ring is provided on the fixed sleeve outside the fixed shaft, a fan frame is fixedly connected in the heat dissipation groove, a cooling fan is installed on one side of the fan frame, a rack is provided on one side of the connecting gear ring, and the connecting gear ring and the rack are engaged for transmission.
[0011] Through the above technical solution, the movable platform drives the fixed rod to move upward along the position of the slide groove while rising, and the fixed rod drives the rack to move. The rack engages with the connecting gear ring, and drives the connecting gear ring to rotate during the rising process. The connecting gear ring drives the protective fan cover to rotate, so that the connecting gear ring moves to a position staggered with the fixed frame, so that the ventilation channel is opened, and the power of the cooling fan is turned on to dissipate heat for the surveying instrument body in use; when the surveying instrument assembly is used and needs to be retracted into the protective box, the rack moves downward, driving the connecting gear ring to rotate in the opposite direction, and the connecting gear ring again drives the protective fan cover to rotate to a state where it overlaps with the opening of the fixed frame, thereby closing the ventilation port.
[0012] Furthermore, the upper end of the rack is fixedly connected to a connecting limit rod, the lower end of the rack is fixedly connected to a fixing rod, one end of the fixing rod is fixedly connected to the lower end of the movable platform, and the connecting limit rod and the fixing rod are respectively slidably connected to the slide groove.
[0013] Through the above technical solution, the ventilation channel opens when ascending to form air convection. The device can quickly dissipate heat when in use to avoid measurement errors caused by high temperature. The ventilation channel closes when descending to form a completely sealed protective cover to block the entry of dust, rain and insects. It is suitable for use in multiple scenarios.
[0014] Furthermore, the surveying instrument assembly includes a surveying instrument body, a fixed screen is fixedly installed on one side of the surveying instrument body, a plurality of connection sockets are installed on one side of the fixed screen, heat dissipation holes are symmetrically opened on both sides of the surveying instrument body, and a surveying head is fixedly connected to the other side of the surveying instrument body.
[0015] Through the above technical solution, after the surveying instrument body is raised into position, the heat dissipation holes can be aligned with the heat dissipation slots, so that the heat generated by the surveying instrument body during use can be discharged through the heat dissipation slots.
[0016] Furthermore, the balancing support assembly includes a connecting block rotatably connected to the mounting and fixing platform, and multiple groups of connecting blocks are provided on the inner circumference of the mounting and fixing platform. The lower ends of the multiple groups of connecting blocks are respectively fixedly connected to support rods, the lower ends of the support rods are fixedly connected to fixed foot rods, and the lower ends of the fixed foot rods are fixedly connected to mounting foot cones.
[0017] Through the above technical solution, the installation foot cone is a conical metal structure. When it is set up on soft ground in the wild, the installation foot cone can be stepped on or knocked to make it penetrate into the ground, forming a stable anchor point, effectively preventing the fixed foot pole from slipping or tipping over.
[0018] Furthermore, a central fixing column is fixedly connected to the center position of the lower end of the mounting fixing platform, a connecting sleeve is slidably connected to the central fixing column, and multiple groups of second mounting seats are evenly fixedly installed on the circumference of the connecting sleeve. The multiple groups of support rods are respectively fixedly connected to the connecting platform, the first mounting seat is fixedly connected to the inner side of the connecting platform, and an adjusting rod is rotatably connected inside the second mounting seat, and the adjusting rod is rotatably connected to the first mounting seat at one end away from the second mounting seat.
[0019] Through the above technical solution, the connecting sleeve is pushed upward along the direction of the central fixed column. The connecting sleeve drives the adjusting rod to rotate during movement. When the adjusting rod is rotated to open, it simultaneously pushes the connecting platform outward, so that multiple groups of connecting platforms are opened to form a triangular setting. The installation foot cone is inserted downward into the ground to fix the position of the device.
[0020] The beneficial effects of the present invention are as follows: (1) The present invention is designed with a matching opening and closing component and a heat dissipation protection component. When the surveying instrument body rises, the ventilation channel rotates and opens synchronously, which can timely discharge the heat generated by the internal electronic components and optical components during operation, avoiding accuracy drift or circuit failure caused by high temperature. When the surveying instrument body descends and the movable cover is closed, the ventilation channel is closed synchronously, which can effectively block the intrusion of impurities such as dust, water vapor and sand, and protect precision components such as lenses and sensors from pollution or corrosion, thereby extending the service life of the equipment. At the same time, when working in the field, there is no need to manually adjust the state of the ventilation channel separately, and the ventilation channel can be adjusted as needed. The ventilation channel is automatically opened and closed by the lifting and lowering action of the surveying instrument body, which reduces the operator's additional operation steps and improves work efficiency; (2) The present invention designs an opening and closing component. When not in use, the surveying instrument component can be completely stored in the protective box. The movable cover is closed to form a sealed space, which can isolate dust, water vapor, insects and external force collisions, and protect core components such as optical lenses from erosion or physical damage. When in use, it is lifted out of the protective box and is only exposed to the external environment during the working phase, reducing unnecessary exposure time. It is suitable for dusty and rainy working scenes in the wild, significantly reducing the probability of equipment failure and maintenance costs, and is convenient and efficient to operate. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is a first-view stereoscopic structural diagram of the present invention; Figure 2 This is a second perspective three-dimensional structural diagram of the present invention; Figure 3 This invention Figure 2 A partial enlarged view of point A in the middle; Figure 4 This is a first-perspective three-dimensional structural diagram of the protective box of the present invention; Figure 5 This is a second perspective structural diagram of the protective box of the present invention; Figure 6It is a three-dimensional structural diagram of the opening and closing assembly of the present invention; Figure 7 It is a diagram of the internal structure of the protective box of the present invention; Figure 8 It is a cross-sectional structural diagram of the protection box of the present invention; Figure 9 This is an exploded structural diagram of the heat dissipation protection assembly of the present invention; Figure 10 It is a three-dimensional structural diagram of the heat dissipation protection component of the present invention; Figure 11 It is a three-dimensional structural diagram of the surveying and mapping instrument assembly of the present invention.
[0022] Figure numerals: 1. Mounting platform; 2. Balance support assembly; 20. Connecting block; 21. Support rod; 22. Connecting platform; 23. Fixed foot rod; 24. Mounting foot cone; 25. Center fixing column; 26. Connecting sleeve; 27. First mounting seat; 28. Second mounting seat; 29. Adjusting rod; 3. Protective box; 30. Mounting slot; 31. Limiting slot; 32. Slide slot; 33. Heat dissipation slot; 4. Surveying and mapping instrument assembly; 40. Surveying and mapping instrument body; 41. Surveying and mapping head; 42. Fixed screen; 43. Connecting socket; 44. Heat dissipation hole ;5. Opening and closing assembly;50. L-shaped rod;51. Center axis;52. Driving gear;53. Driven gear;54. First connecting rod;55. Second connecting rod;56. Limiting column;57. Driving motor;58. Motor protective shell;59. Moving platform;510. Auxiliary connecting rod;511. Moving cover;6. Heat dissipation protection assembly;60. Fixed frame;61. Protective fan cover;62. Fixed shaft;63. Connecting gear ring;64. Rack;65. Connecting limiting rod;66. Fixed rod;67. Fan frame;68. Cooling fan. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0024] like Figures 1-4 As shown, a land surveying and mapping instrument with a protective function in this embodiment includes a mounting and fixing platform 1, a protective box 3 is fixedly installed on the upper end of the mounting and fixing platform 1, a mounting groove 30 is symmetrically provided on one side of the protective box 3, a limiting groove 31 is symmetrically provided on one side of the protective box 3, heat dissipation grooves 33 are symmetrically provided on both sides of the protective box 3, and heat dissipation protection components 6 are respectively provided in the two heat dissipation grooves 33, and sliding grooves 32 are symmetrically provided on both sides of the protective box 3; an opening and closing component 5 is installed on one side of the protective box 3, a surveying and mapping instrument component 4 is fixedly installed in the protective box 3, and a balancing support component 2 is fixedly connected to the lower end of the mounting and fixing platform 1.
[0025] like Figures 1-6 As shown, the opening and closing assembly 5 includes two central shafts 51 rotatably connected to the protective box 3. The two central shafts 51 are symmetrically arranged on one side of the protective box 3. L-shaped rods 50 are fixedly connected to the two central shafts 51 respectively. The adjacent sides of the two L-shaped rods 50 are fixedly connected to the driving gear 52 and the driven gear 53 respectively. The driven gears 53 and the driven gears 53 are meshed with each other. One end of the central shaft 51 is fixedly connected to a driving motor 57. The driving motor 57 is fixedly connected to the motor protective shell 58. The motor protective shell 58 is fixedly installed with the protective box 3. The L-shaped rod 50 is away from the driving motor. One end of the gear 52 is rotatably connected to a movable cover 511, which is slidably connected to the upper end of the protective box 3. One side of the movable cover 511 is rotatably connected to an auxiliary connecting rod 510. The auxiliary connecting rod 510 is rotatably connected to the protective box 3 at one end away from the movable cover 511. The driving motor 57 drives the driving gear 52 on one side to rotate, and the driving gear 52 drives the driven gear 53 on the other side to move through engagement. The driving gear 52 and the driven gear 53 respectively drive the corresponding L-shaped rod 50 to rotate around the central axis 51, so that the movable covers 511 on both sides slide to both sides at the same time, thereby opening the protective box 3.
[0026] like Figure 1-Figure 7 As shown, one side of the L-shaped rod 50 is rotatably connected to the first connecting rod 54, and the first connecting rod 54 is rotatably connected to the side away from the driving gear 52 with the second connecting rod 55. The second connecting rod 55 is rotatably connected to the movable platform 59 at one end away from the first connecting rod 54. The movable platform 59 is slidably connected to the protective box 3. A limiting column 56 is fixedly connected to the second connecting rod 55, and the limiting column 56 is slidably connected to the limiting groove 31. The driving motor 57 transmits power to the first connecting rod 54 synchronously while driving the L-shaped rod 50 to rotate. The first connecting rod 54 rotates and drives the second connecting rod 55 to rotate. Through the first connecting rod 54 and the second connecting rod The rods 55 cooperate with each other, so that the second connecting rod 55 drives the movable platform 59 to slide upward along the direction of the limit groove 31, so that the surveying and mapping instrument assembly 4 on the movable platform 59 rises synchronously to the outside of the protective box 3 when the movable cover 511 is opened. When not in use, the surveying and mapping instrument assembly 4 can be completely stored in the protective box 3, and the movable cover 511 is closed to form a sealed space, which can isolate dust, water vapor, insects and external force collisions, and protect core components such as optical lenses from erosion or physical damage. When in use, it is lifted out of the protective box and is only exposed to the external environment during the working stage, reducing unnecessary exposure time.
[0027] like Figures 1-10As shown, the heat dissipation protection assembly 6 includes a fixed frame 60 fixedly installed between the heat dissipation groove 33, and a protective fan cover 61 is rotatably connected to one side of the fixed frame 60. The center position of the protective fan cover 61 is fixedly connected to a fixed shaft 62, and a connecting gear ring 63 is fixedly sleeved on the outer side of the fixed shaft 62. A fan frame 67 is fixedly connected to the heat dissipation groove 33, and a cooling fan 68 is installed on one side of the fan frame 67. A rack 64 is provided on one side of the connecting gear ring 63. The connecting gear ring 63 and the rack 64 are engaged with each other for transmission. The movable platform 59 drives the fixed rod 66 to move upward along the position of the slide groove 32 while rising, and the fixed rod 66 drives the rack 64 to move. The rack 64 drives the connecting gear ring 63 to rotate during the rising process by engaging with the connecting gear ring 63. The connecting gear ring 63 drives the protective fan cover 61 to rotate, so that the connecting gear ring 63 moves to a position staggered with the fixed frame 60, so that the ventilation channel is opened. , turn on the power of the cooling fan 68, and the surveying instrument body 40 in use can be cooled; when the surveying instrument assembly 4 is used and needs to be retracted downward into the protective box 3, the rack 64 moves downward, driving the connecting ring gear 63 to rotate in the opposite direction, and the connecting ring gear 63 drives the protective fan cover 61 to rotate to a state of overlapping with the opening of the fixed frame 60, thereby closing the vent; the upper end of the rack 64 is fixedly connected to the connecting limit rod 65, and the lower end of the rack 64 is fixedly connected to the fixing rod 66, one end of the fixing rod 66 is fixedly connected to the lower end of the moving platform 59, and the connecting limit rod 65 and the fixing rod 66 are respectively slidably connected to the slide groove 32. When rising, the ventilation channel is opened to form air convection, and the device can quickly dissipate heat when in use to avoid measurement errors caused by high temperature. When descending, the ventilation channel is closed to form a completely sealed protective cover to block dust, rain and insects from entering, which is suitable for use in multiple scenarios.
[0028] like Figures 1-11 As shown, the surveying instrument assembly 4 includes a surveying instrument body 40, a fixed screen 42 is fixedly mounted on one side of the surveying instrument body 40, a plurality of connection sockets 43 are installed on one side of the fixed screen 42, heat dissipation holes 44 are symmetrically opened on both sides of the surveying instrument body 40, and a surveying head 41 is fixedly connected to the other side of the surveying instrument body 40. After the surveying instrument body 40 is raised into position, the heat dissipation holes 44 can be aligned with the position of the heat dissipation slot 33, so that the heat generated by the surveying instrument body 40 during use can be discharged through the heat dissipation slot 33.
[0029] like Figure 1-Figure 3As shown, the balancing support assembly 2 includes a connecting block 20 that is rotatably connected to the mounting and fixing platform 1. A plurality of groups of connecting blocks 20 are provided on the inner circumference of the mounting and fixing platform 1. The lower ends of the plurality of connecting blocks 20 are respectively fixedly connected to support rods 21. The lower ends of the support rods 21 are fixedly connected to fixed foot rods 23. The lower ends of the fixed foot rods 23 are fixedly connected to mounting foot cones 24. The mounting foot cones 24 are conical metal structures. When erected on soft ground in the wild, the mounting foot cones 24 can be stepped on or knocked to make them penetrate into the ground to form a stable anchor point, effectively preventing the fixed foot rods 23 from slipping or tipping over. A central fixing column 25 is fixedly connected to the center position of the lower end of the mounting and fixing platform 1. A connecting sleeve 26 is slidably connected to the central fixing column 25. A plurality of second mounting seats 28 are evenly fixedly installed on the circumference of the connecting sleeve 26, and a plurality of support rods 21 are respectively fixedly connected to the connecting platform 22, and the first mounting seat 27 is fixedly connected to the inner side of the connecting platform 22. An adjusting rod 29 is rotatably connected inside the second mounting seat 28, and the adjusting rod 29 is rotatably connected to the first mounting seat 27 at one end away from the second mounting seat 28, and pushes the connecting sleeve 26 upward along the direction of the central fixed column 25. The connecting sleeve 26 drives the adjusting rod 29 to rotate during movement, and the adjusting rod 29 simultaneously pushes the connecting platform 22 outward when it is rotated and opened, so that the plurality of connecting platforms 22 are opened to form a triangular arrangement, and the mounting foot cone 24 is inserted downward into the ground to fix the position of the device.
[0030] The working principle of this embodiment is as follows: when the device is moved to the appropriate position, the connecting sleeve 26 is pushed upward along the direction of the central fixing column 25. The connecting sleeve 26 drives the adjustment rod 29 to rotate during the movement. When the adjustment rod 29 rotates open, it simultaneously pushes the connecting platform 22 outward, so that the multiple groups of connecting platforms 22 are opened to form a triangular arrangement. The mounting foot cone 24 is then firmly inserted into the ground to fix the position of the device. Start the drive motor 57 in the motor protection housing 58, and the drive motor 57 drives the driving gear 52 on one side to rotate. The driving gear 52 drives the driven gear 53 on the other side to move through engagement. The driving gear 52 and the driven gear 53 respectively drive the corresponding L-shaped rod 50 to rotate around the central axis 51, thereby causing the movable covers 511 on both sides to slide to the sides simultaneously, thereby opening the protective box 3; The driving motor 57 simultaneously transmits power to the first connecting rod 54 while driving the L-shaped rod 50 to rotate. The rotation of the first connecting rod 54 drives the second connecting rod 55 to rotate. Through the mutual cooperation between the first connecting rod 54 and the second connecting rod 55, the second connecting rod 55 drives the movable platform 59 to slide upward along the direction of the limiting groove 31, so that the surveying and mapping instrument assembly 4 on the movable platform 59 is synchronously raised to the outside of the protective box 3 when the movable cover 511 is opened. Furthermore, as the movable platform 59 rises, it drives the fixed rod 66 to move upward along the position of the slide groove 32, and the fixed rod 66 drives the rack 64 to move. The rack 64 engages with the connecting gear ring 63, and drives the connecting gear ring 63 to rotate during the rising process. The connecting gear ring 63 drives the protective fan cover 61 to rotate, so that the connecting gear ring 63 moves to a position staggered with the fixed frame 60, so that the ventilation channel is opened, and the power of the cooling fan 68 is turned on to dissipate heat for the surveying instrument body 40 in use; when the surveying instrument assembly 4 is used and needs to be retracted downward into the protective box 3, the rack 64 moves downward, driving the connecting gear ring 63 to rotate in the opposite direction, and the connecting gear ring 63 again drives the protective fan cover 61 to rotate to a state where it overlaps with the opening of the fixed frame 60, thereby closing the ventilation port.
[0031] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.
Claims
1. A land surveying and mapping instrument with a protective function, comprising a mounting station (1), characterized in that: A protective box (3) is fixedly mounted on the upper end of the mounting platform (1), a mounting groove (30) is symmetrically provided on one side of the protective box (3), a limiting groove (31) is symmetrically provided on one side of the protective box (3), heat dissipation grooves (33) are symmetrically provided on both sides of the protective box (3), heat dissipation protection components (6) are respectively provided in the two heat dissipation grooves (33), and sliding grooves (32) are symmetrically provided on both sides of the protective box (3); An opening and closing assembly (5) is installed on one side of the protection box (3), a surveying and mapping instrument assembly (4) is fixedly installed in the protection box (3), and a balancing support assembly (2) is fixedly connected to the lower end of the mounting and fixing platform (1).
2. The land surveying and mapping instrument with a protective function according to claim 1, characterized in that: The opening and closing assembly (5) comprises two central shafts (51) rotatably connected to the protection box (3), the two central shafts (51) being symmetrically arranged on one side of the protection box (3), the two central shafts (51) being fixedly connected to an L-shaped rod (50), the adjacent sides of the two L-shaped rods (50) being fixedly connected to a driving gear (52) and a driven gear (53), the driven gear (53) and the driven gear (53) being meshed with each other, and one end of the central shaft (51) being fixedly connected to a driving gear (52) and a driven gear (53). A motor (57) is fixedly connected between the driving motor (57) and the motor protective shell (58), the motor protective shell (58) is fixedly installed with the protective box (3), the end of the L-shaped rod (50) away from the driving gear (52) is rotatably connected to the movable cover (511), and the end is slidably connected to the upper end of the protective box (3), and one side of the movable cover (511) is rotatably connected to the auxiliary connecting rod (510), and the end of the auxiliary connecting rod (510) away from the movable cover (511) is rotatably connected to the protective box (3).
3. The land surveying and mapping instrument with a protective function according to claim 2, characterized in that: One side of the L-shaped rod (50) is rotatably connected to a first connecting rod (54), and the first connecting rod (54) is rotatably connected to a second connecting rod (55) on a side away from the driving gear (52). The second connecting rod (55) is rotatably connected to a movable platform (59) at one end away from the first connecting rod (54). The movable platform (59) is slidably connected to the protective box (3). A limiting column (56) is fixedly connected to the second connecting rod (55), and the limiting column (56) is slidably connected to the limiting groove (31).
4. The land surveying and mapping instrument with a protective function according to claim 3, characterized in that: The heat dissipation protection assembly (6) includes a fixed frame (60) fixedly installed between the heat dissipation groove (33), a protective fan cover (61) is rotatably connected to one side of the fixed frame (60), a fixed shaft (62) is fixedly connected to the center position of the protective fan cover (61), a connecting gear ring (63) is fixedly provided on the outer side of the fixed shaft (62), a fan frame (67) is fixedly connected to the heat dissipation groove (33), a heat dissipation fan (68) is installed on one side of the fan frame (67), a rack (64) is provided on one side of the connecting gear ring (63), and the connecting gear ring (63) and the rack (64) are meshed and transmitted.
5. The land surveying and mapping instrument with a protective function according to claim 4, characterized in that: The upper end of the rack (64) is fixedly connected to a connecting limit rod (65), the lower end of the rack (64) is fixedly connected to a fixing rod (66), one end of the fixing rod (66) is fixedly connected to the lower end of the movable platform (59), and the connecting limit rod (65) and the fixing rod (66) are respectively slidably connected to the sliding groove (32).
6. The land surveying and mapping instrument with a protective function according to claim 1, characterized in that: The surveying instrument assembly (4) comprises a surveying instrument body (40), a fixed screen (42) is fixedly mounted on one side of the surveying instrument body (40), a plurality of connection sockets (43) are mounted on one side of the fixed screen (42), heat dissipation holes (44) are symmetrically opened on both sides of the surveying instrument body (40), and a surveying head (41) is fixedly connected to the other side of the surveying instrument body (40).
7. The land surveying and mapping instrument with a protective function according to claim 1, characterized in that: The balancing support assembly (2) comprises a connecting block (20) rotatably connected to the mounting and fixing platform (1); a plurality of groups of connecting blocks (20) are provided on the inner circumference of the mounting and fixing platform (1); the lower ends of the plurality of groups of connecting blocks (20) are respectively fixedly connected to support rods (21); the lower ends of the support rods (21) are fixedly connected to fixed foot rods (23); and the lower ends of the fixed foot rods (23) are fixedly connected to mounting foot cones (24).
8. The land surveying and mapping instrument with a protective function according to claim 7, characterized in that: A central fixing column (25) is fixedly connected to the center position of the lower end of the mounting fixing platform (1), a connecting sleeve (26) is slidably connected to the central fixing column (25), a plurality of groups of second mounting seats (28) are evenly fixedly installed on the circumference of the connecting sleeve (26), a plurality of groups of support rods (21) are respectively fixedly connected to the connecting platform (22), a first mounting seat (27) is fixedly connected to the inner side of the connecting platform (22), an adjusting rod (29) is rotatably connected to the inner side of the second mounting seat (28), and the adjusting rod (29) is rotatably connected to the first mounting seat (27) at one end away from the second mounting seat (28).