Field surveying and mapping device for engineering garden design

Abstract

The invention relates to an on-site surveying and mapping device for engineering garden design, which is applied to the field of measurement and comprises a bearing cylinder, a mounting cylinder and a roller assembly, the roller assembly is utilized to drive the mounting cylinder to move in the bearing cylinder, and meanwhile, an accelerometer and a counterweight ring are arranged in the mounting cylinder in a matched manner; when the measuring device tilts, the gravity center of the measuring device is adjusted, the tilting moment of the measuring device is counteracted, shaking and tilting of the measuring device are reduced, the probability that the surveying and mapping device topples over in windy weather or under the condition of ground soil collapse is reduced, and the surveying and mapping device is protected; in addition, through cooperative use of an accelerometer and a roller assembly, manual leveling operation is replaced, and rapid and automatic leveling of the measuring device is achieved. Besides, through a protective cover and a roller assembly which are matched with the bearing cylinder, the protective cover and the bearing cylinder are spliced to form a closed cover body when the measuring device topples over, and the protective cover is supported through the roller assembly, so that the probability of collision damage of the equipment is reduced.

Description

Technical Field

[0001] The present invention relates to a surveying and mapping device, in particular to a field surveying and mapping device for engineering garden design applied in the measurement field. Background Art

[0002] In the surveying and mapping operation of garden engineering, the measuring device is usually fixed to the ground through a supporting tripod. When encountering strong wind weather or uneven settlement of the foundation, this fixing system is vulnerable to external loads, resulting in structural instability. Specifically, the instrument platform generates an excessive tilt angle. In extreme cases, precision surveying and mapping equipment such as total stations may overturn. Such working conditions will cause inelastic collisions between optical elements and the ground, leading to equipment functional failures or mechanical structural damages, seriously affecting the continuity of the measurement operation and data accuracy.

[0003] The patent with the existing publication number CN112648983A discloses a surveying and mapping device for garden landscape design, including a total station and a supporting rod. The total station includes a U-shaped housing, and a U-shaped notch is opened inside the U-shaped housing; by setting the surveying and mapping device for garden landscape design as a combined structure of a total station and a supporting rod, and opening a U-shaped notch inside the U-shaped housing of the total station, an outer ring and an inner ring are sequentially arranged from outside to inside in the U-shaped notch. Two round rods two are rotatably connected between the outer wall of the outer ring and the inner wall of the U-shaped notch, and two round rods one are rotatably connected between the outer wall of the inner ring and the outer ring. A measuring head is rotatably connected at the opening position of the U-shaped notch corresponding to the U-shaped housing of the total station. The structure has a small number of equipment carried. Under the action of the gravity of the U-shaped housing, the total station can be automatically leveled, so as to achieve the purpose of rapid adjustment.

[0004] The above-mentioned prior art discloses a technical solution for the leveling of the surveying and mapping device by using its own weight, but it does not solve the problem that the surveying and mapping device is prone to tilt or even overturn, resulting in equipment damage. Summary of the Invention

[0005] Aiming at the above-mentioned prior art, the technical problem to be solved by the present invention is that the existing surveying and mapping device is prone to tilt or even overturn, resulting in equipment damage.

[0006] To solve the above problems, the present invention provides a field surveying and mapping device for engineering garden design, including a measuring device and a tripod fixedly connected to the measuring device; the measuring device includes a bearing cylinder, and an installation cylinder is spherically connected inside the bearing cylinder. The installation cylinder includes an upper spherical shell and a lower spherical shell that are spliced to form a spherical shell. The upper spherical shell and the lower spherical shell are rotatably connected, and the upper spherical shell is made of a transparent material. A measuring camera and a controller are fixedly connected inside the upper spherical shell, and a touch screen extending to the spherical surface of the upper spherical shell is fixedly connected to the controller. A spherical center plate is fixedly connected to the lower spherical shell, and an accelerometer is fixedly connected to the center of the spherical center plate. The accelerometer is located at the center of the spherical shell; a counterweight ring is fixedly connected to the inner wall of the lower spherical shell below the spherical center plate, and a roller assembly is provided inside the counterweight ring; The roller assembly includes a pair of rubber wheels, which pass through the lower spherical shell and abut against the inner wall of the supporting cylinder. A wheel axle is fixedly connected between the pair of rubber wheels, the wheel axle is rotatably connected to the rotating cylinder, the rotating cylinder is rotatably connected to the lifting frame, the lifting frame is fixedly connected to the movable end of the electric push rod, and the fixed end of the electric push rod is fixedly connected to the spherical center plate; the wheel axle is connected to the output shaft of the first motor through the first transmission gear group, the first motor is fixedly connected to the inner wall of the rotating cylinder, the rotating cylinder is connected to the output shaft of the second motor through the second transmission gear group, and the second motor is fixedly connected to the lifting frame.

[0007] In the above-mentioned on-site surveying and mapping device for engineering garden design, the center of gravity of the measuring device is adjusted by the counterweight ring and the roller assembly, thereby reducing the probability of tilting and shaking of the measuring device.

[0008] As a further improvement of the present application, the controller is equipped with an anti-dump system, which includes a control module. The input end of the control module is connected to a levelness monitoring module and an inclination monitoring module. The input ends of the levelness monitoring module and the inclination monitoring module are both connected to an accelerometer. The output end of the control module is respectively connected to a leveling module and a center of gravity adjustment module. The output ends of the leveling module and the center of gravity adjustment module are both connected to the first motor and the second motor.

[0009] As a further improvement of the present application, a fixing ring is fixedly connected to the opening position of the upper end of the carrier tube, a buzzer is fixedly connected to the fixing ring, the output end of the control module is also connected to an alarm module, and the output end of the alarm module is connected to the buzzer.

[0010] As a further improvement of the present application, a protective cover is provided concentrically with the shell wall of the supporting tube, and the end of the protective cover is connected to a third motor that drives it to rotate. The output end of the control module is also connected to an anti-collision module, and the output end of the anti-collision module is respectively connected to the first motor, the second motor, the electric push rod and the third motor.

[0011] As a further improvement of the present application, a nut is fixedly connected to the lower end of the supporting tube, and a screw rod that cooperates with the nut is fixedly connected to the tripod.

[0012] As a further improvement of the present application, the supporting tube is provided with a spherical cavity with an open upper end, the cross-sectional curvature of the spherical cavity is greater than one hundred and eighty degrees, the inner wall of the spherical cavity is connected to two groups of balls equidistantly distributed circumferentially on both sides of the center of the spherical cavity, and a through hole for the roller assembly to pass through is provided at the center position of the lower end of the lower spherical shell.

[0013] As a further improvement of the present application, both the supporting tube and the protective cover are in the shape of notched spherical shells, and the curvature of their cross sections is greater than one hundred and eighty degrees. The supporting tube includes an outer shell and an inner shell concentrically arranged with the outer shell. An arc-shaped cavity for accommodating the protective cover is formed between the inner shell and the outer shell. The inner shell is fixedly connected to the outer shell by a pair of connecting rods.

[0014] As a further improvement of the present application, the protective cover is fixedly connected to a pair of sleeves rotatably sleeved on the outside of the connecting rod, and the sleeves are connected to the output shaft of the third motor through a third transmission gear set.

[0015] As a further improvement of this application, when used, the following steps are included: Step 1: Install the tripod. At the measurement location, securely connect the tripod to the measurement device and then place the tripod on the ground. Step 2: Automatic leveling: Start the controller through the touch screen, the controller starts the accelerometer, detects the real-time levelness of the mounting cylinder, and based on the real-time levelness of the mounting cylinder, starts the first motor and the second motor of the roller assembly so that the levelness of the mounting cylinder reaches the set levelness, and then turns off the first motor and the second motor; Step three, anti-tilt; the tilt angle of the measuring device is monitored in real time by an accelerometer. When the tilt angle is greater than a set first tilt angle threshold, the controller starts the first motor and the second motor of the roller assembly, so that the counterweight ring moves in the opposite direction of the tilt direction of the measuring device to offset the tilt torque; Step 4, anti-collision: when the accelerometer detects that the tilt angle of the measuring device is greater than the second tilt angle threshold, the following sub-steps are included: S1: The controller starts the third motor, the protective cover rotates to the side of the opening of the carrier tube and cooperates with the carrier tube to form a closed cover body, and the third motor is turned off; S2, starting the first motor and the second motor, so that the rubber wheel rolls along the inner wall of the bearing cylinder and then enters the protective cover; S3, starting the electric push rod to make the rubber wheel abut against the inner wall of the protective cover, then moving the rubber wheel to the center position of the inner wall of the protective cover, and turning off the first motor, the second motor and the electric push rod.

[0016] To summarize, the present invention uses a ball-jointed carrying tube and mounting tube, and a roller assembly installed in the mounting tube and abutting against the carrying tube. The roller assembly drives the mounting tube to move in the carrying tube, and at the same time cooperates with an accelerometer and a counterweight ring arranged in the mounting tube to adjust the center of gravity of the measuring device when the measuring device tilts, offset the tilting torque of the measuring device, reduce the shaking of the measuring device, and reduce the probability of the surveying and mapping device tipping over in windy weather or when the ground soil collapses, thereby protecting the surveying and mapping device. In addition, through the cooperation of the accelerometer and the roller assembly, the measuring device can be quickly and automatically leveled, replacing the manual leveling operation and improving the operating efficiency. In addition, through the protective cover that cooperates with the carrying tube, when the measuring device tips over, the protective cover and the carrying tube are spliced ​​to form a closed cover body, thereby protecting the mounting tube and reducing the probability of equipment impact damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the three-dimensional structure of this application; Figure 2 Schematic diagram of the cross-sectional structure of the measuring device in this application; Figure 3 for Figure 2 Schematic diagram of the enlarged structure at A in the middle; Figure 4 This is a schematic diagram of the exploded assembly structure of the bearing tube and the mounting tube in this application; Figure 5 This is a schematic diagram of the exploded assembly structure of the roller assembly in this application; Figure 6 This is a schematic diagram of the module of the anti-dumping system in this application; Figure 7 This is a schematic diagram of the state when the application is tilted; Figure 8 This is a schematic diagram of the movement of the roller assembly when tilting occurs in this application; Figure 9 This is a schematic diagram of the explosion assembly structure of the protective cover and the supporting tube in this application; Figure 10 This is a schematic diagram of the state when dumping occurred in this application; Figure 11 This is a schematic diagram of the motion state of the roller assembly and the protective cover when the application tips over.

[0018] Description of the numbers in the figure: 1. Measuring device; 2. Tripod; 3. Carrying tube; 301. Outer shell; 302. Inner shell; 303. Connecting rod; 304. Fixing ring; 4. Mounting tube; 401. Upper spherical shell; 402. Lower spherical shell; 403. Through hole; 5. Measuring camera; 6. Controller; 7. Touch screen; 8. Accelerometer; 9. Center plate; 10. Counterweight ring; 11. Roller assembly; 12. Lifting frame; 13. Rotating tube; 14. Axle; 15. Rubber wheel; 16. First transmission gear set; 17. First motor; 18. Second transmission gear set; 19. Second motor; 20. Electric push rod; 21. Buzzer light; 22. Ball bearing; 23. Nut; 24. Protective cover; 25. Sleeve; 26. Third transmission gear set; 27. Third motor. DETAILED DESCRIPTION

[0019] The following describes two implementation methods of the present application in detail with reference to the accompanying drawings.

[0020] The first implementation method: Figures 1-8 A field surveying and mapping device for engineering garden design is shown, comprising a measuring device 1 and a tripod 2 fixedly connected to the measuring device 1; the measuring device 1 comprises a carrying tube 3, in which a mounting tube 4 is spherically connected, and the mounting tube 4 comprises an upper spherical shell 401 and a lower spherical shell 402 spliced ​​together to form a spherical shell, the upper spherical shell 401 and the lower spherical shell 402 being rotatably connected, and the upper spherical shell 401 is made of a transparent material, a measuring camera 5 and a controller 6 are fixedly connected to the upper spherical shell 401, and the controller 6 is fixedly connected to a touch screen 7 extending to the spherical surface of the upper spherical shell 401; the horizontal orientation of the measuring camera 5 is changed by rotating the upper spherical shell 401, and the real-time image captured by the measuring camera 5 is displayed on the touch screen 7. It should be noted that the measuring camera 5 is a panoramic imaging measuring camera that uses dual-light coaxial parallel technology of laser and camera to complete the simultaneous operation of laser ranging and camera imaging; See also Figure 2 and Figure 3, a spherical center plate 9 is fixedly connected to the lower spherical shell 402, and an accelerometer 8 is fixedly connected to the center position of the spherical center plate 9. The accelerometer 8 is located at the center position of the spherical shell; a counterweight ring 10 is provided below the spherical center plate 9 and is fixedly connected to the inner wall of the lower spherical shell 402. A roller assembly 11 is provided on the inner side of the counterweight ring 10. The roller assembly 11 includes a pair of rubber wheels 15. The rubber wheels 15 pass through the lower spherical shell 402 and abut against the inner wall of the bearing cylinder 3. A wheel shaft 14 is fixedly connected between the pair of rubber wheels 15, and the wheel shaft 14 rotates The rotating cylinder 13 is rotatably connected to the lifting frame 12, and the lifting frame 12 is fixedly connected to the movable end of the electric push rod 20, and the fixed end of the electric push rod 20 is fixedly connected to the ball center plate 9; the wheel shaft 14 is connected to the output shaft of the first motor 17 through the first transmission gear set 16, and the first motor 17 is fixedly connected to the inner wall of the rotating cylinder 13. The rotating cylinder 13 is connected to the output shaft of the second motor 19 through the second transmission gear set 18, and the second motor 19 is fixedly connected to the lifting frame 12; Specifically, when the first motor 17 drives the wheel axle 14 and the rubber wheel 15 to rotate through the first transmission gear set 16, the rubber wheel 15 rolls on the inner wall of the carrying cylinder 3, thereby driving the installation cylinder 4 to move relative to the carrying cylinder 3; when the second motor 19 drives the rotating cylinder 13 to rotate through the second transmission gear set 18, the rotating cylinder 13 drives the wheel axle 14 and the rubber wheel 15 to rotate, thereby changing the moving direction of the installation cylinder 4 relative to the carrying cylinder 3; when the electric push rod 20 drives the lifting frame 12 to move up and down, the contact pressure between the rubber wheel 15 and the inner wall of the carrying cylinder 3 is changed; it should be noted that the transparent material is one of polycarbonate or polymethyl methacrylate.

[0021] See also Figure 6 The controller 6 is equipped with an anti-dumping system, which includes a control module. The input end of the control module is connected to the levelness monitoring module and the inclination monitoring module. The input ends of the levelness monitoring module and the inclination monitoring module are both connected to the accelerometer 8. The output end of the control module is respectively connected to the leveling module and the center of gravity adjustment module. The output ends of the leveling module and the center of gravity adjustment module are both connected to the first motor 17 and the second motor 19.

[0022] For details, please refer to Figure 6-Figure 8 , when used, includes the following steps: Step 1: Install the tripod 2; at the measurement location, securely connect the tripod 2 to the measurement device 1, and then place the tripod 2 on the ground; Step 2: Automatic leveling: Activate the controller 6 via the touch screen 7, which activates the accelerometer 8 to detect the real-time levelness of the mounting cylinder 4. Based on the real-time levelness of the mounting cylinder 4, the controller 6 activates the first motor 17 and the second motor 19 of the roller assembly 11, so that the levelness of the mounting cylinder 4 reaches the set levelness, and then turns off the first motor 17 and the second motor 19. Step three, anti-tilt; the tilt angle of the measuring device 1 is monitored in real time by the accelerometer 8. When the tilt angle is greater than the set first tilt angle threshold, the controller 6 starts the first motor 17 and the second motor 19 of the roller assembly 11, so that the counterweight ring 10 moves in the opposite direction of the tilt direction of the measuring device 1 to offset the tilt torque.

[0023] Compared with traditional garden surveying and mapping devices, the present invention uses a ball-jointed supporting tube 3 and mounting tube 4, and a roller assembly 11 installed in the mounting tube 4 and abutting against the supporting tube 3. The roller assembly 11 drives the mounting tube 4 to move in the supporting tube 3, and at the same time cooperates with the accelerometer 8 and the counterweight ring 10 arranged in the mounting tube 4 to adjust the center of gravity of the measuring device 1 when the measuring device 1 tilts, offset the tilting torque of the measuring device 1, reduce the shaking of the measuring device 1, and reduce the probability of the surveying and mapping device tipping over in windy weather or when the ground soil collapses, thereby protecting the surveying and mapping device; in addition, through the cooperation of the accelerometer 8 and the roller assembly 11, the measuring device 1 can be quickly and automatically leveled, replacing the manual leveling operation and improving the operating efficiency.

[0024] See also Figure 1 and Figure 2 The lower end of the carrying tube 3 is fixedly connected with a nut 23, and the tripod 2 is fixedly connected with a screw that cooperates with the nut 23.

[0025] Specifically, it is convenient to disassemble and assemble the measuring device 1 and the tripod 2 .

[0026] See also Figure 2 and Figure 3 The supporting tube 3 is provided with a spherical cavity with an open upper end. The cross-sectional curvature of the spherical cavity is greater than one hundred and eighty degrees. The inner wall of the spherical cavity is connected with two groups of balls 22 equidistantly distributed on both sides of the center of the sphere. A through hole 403 for the roller assembly 11 to pass through is provided at the center position of the lower end of the lower spherical shell 402.

[0027] Specifically, two groups of balls 22 are used to restrict the mounting cylinder 4 within the bearing cylinder 3 and realize the spherical connection between the mounting cylinder 4 and the bearing cylinder 3 .

[0028] See also Figure 2 The upper opening of the carrying tube 3 is fixedly connected with a fixing ring 304 , and the fixing ring 304 is fixedly connected with a buzzer 21 . The output end of the control module is also connected with an alarm module, and the output end of the alarm module is connected to the buzzer 21 .

[0029] Specifically, when the accelerometer 8 measures that the tilt angle of the measuring device 1 is greater than the first tilt angle threshold, the alarm module activates the buzzer 21 to remind the operator to handle it in time, thereby further reducing the probability of the surveying and mapping device tipping over.

[0030] Second implementation method: Figures 9-11 The present invention shows an on-site surveying and mapping device for engineering landscape design. Based on the first embodiment, a protective cover 24 arranged concentrically therewith is provided in the shell wall of the supporting cylinder 3. The end of the protective cover 24 is connected to a third motor 27 for driving the rotation thereof. The output end of the control module is also connected to an anti-collision module. The output end of the anti-collision module is respectively connected to the first motor 17, the second motor 19, the electric push rod 20 and the third motor 27.

[0031] For details, please refer to Figure 10 and Figure 11 In order to reduce impact damage during use, when the accelerometer 8 detects that the tilt angle of the measuring device 1 is greater than the second tilt angle threshold (when the tilt angle of the measuring device 1 is greater than the second tilt angle threshold, the entire surveying and mapping device including the measuring device 1 and the tripod 2 falls over), the following sub-steps are included: S1, the controller 6 starts the third motor 27, the protective cover 24 rotates to the open side of the carrying tube 3 and cooperates with the carrying tube 3 to form a closed cover body, and the third motor 27 is turned off; S2, starting the first motor 17 and the second motor 19, so that the rubber wheel 15 rolls along the inner wall of the carrying cylinder 3 and then enters the protective cover 24; Specifically, the purpose of starting the second motor 19 is to make the rubber wheel 15 avoid the ball 22 when moving on the inner wall of the bearing cylinder 3. S3, start the electric push rod 20, so that the rubber wheel 15 abuts against the inner wall of the protective cover 24, and then move the rubber wheel 15 to the center position of the inner wall of the protective cover 24, and turn off the first motor 17, the second motor 19 and the electric push rod 20.

[0032] Specifically, the protective cover 24 is used to protect the mounting tube 4. At the same time, the upper spherical shell 401 in which the measuring camera 5, the controller 6 and the touch screen 7 are installed is moved to a side away from the protective cover 24, thereby further improving the anti-collision capability of the upper spherical shell 401 and protecting the measuring camera 5, the controller 6 and the touch screen 7.

[0033] See also Figure 9 Both the supporting tube 3 and the protective cover 24 are in the shape of notched spherical shells, and the curvature of their cross sections is greater than one hundred and eighty degrees. The supporting tube 3 includes an outer shell 301 and an inner shell 302 arranged concentrically with the outer shell 301. An arc-shaped cavity for accommodating the protective cover 24 is formed between the inner shell 302 and the outer shell 301. The inner shell 302 is fixedly connected to the outer shell 301 through a pair of connecting rods 303.

[0034] Specifically, the protective cover 24 is accommodated by the arc-shaped cavity, thereby reducing the shielding of the measuring camera 5 by the protective cover 24 during horizontal rotation measurement.

[0035] See also Figure 9The protective cover 24 is fixedly connected to a pair of sleeves 25 rotatably sleeved on the outside of the connecting rod 303 , and the sleeves 25 are connected to the output shaft of the third motor 27 through the third transmission gear set 26 .

[0036] Specifically, the third motor 27 drives the sleeve 25 to rotate through the third transmission gear set 26, and the sleeve 25 drives the protective cover 24 to rotate, so that the protective cover 24 and the supporting cylinder 3 cooperate to form a shell enclosed on the outside of the mounting cylinder 4; it should be noted that the third transmission gear set 26 includes a pair of transmission gears located in the same plane, one of which is fixedly connected to the sleeve 25, and the other is fixedly connected to the output shaft of the third motor 27. The third motor 27 is fixedly connected to the fixing ring 304. In addition, the first transmission gear set 16 and the second transmission gear set 18 both include a pair of transmission gears that mesh vertically with each other. This is existing technology and will not be repeated in this application.

[0037] In view of current actual needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. A field surveying and mapping device for engineering garden design, characterized in that: The invention comprises a measuring device (1) and a tripod (2) fixedly connected to the measuring device (1); the measuring device (1) comprises a carrying tube (3), a mounting tube (4) is spherically connected in the carrying tube (3), the mounting tube (4) comprises an upper spherical shell (401) and a lower spherical shell (402) spliced ​​together to form a spherical shell, the upper spherical shell (401) and the lower spherical shell (402) are rotatably connected and the upper spherical shell (401) is made of a transparent material, a measuring camera (5) and a controller (6) are fixedly connected in the upper spherical shell (401), and the controller (6) is fixedly connected to a touch screen (7) extending to the spherical surface of the upper spherical shell (401); A spherical center plate (9) is fixedly connected to the interior of the lower spherical shell (402), an accelerometer (8) is fixedly connected to the center of the spherical center plate (9), and the accelerometer (8) is located at the center of the spherical shell; a counterweight ring (10) is provided below the spherical center plate (9) and is fixedly connected to the inner wall of the lower spherical shell (402), and a roller assembly (11) is provided inside the counterweight ring (10); The roller assembly (11) includes a pair of rubber wheels (15), the rubber wheels (15) pass through the lower spherical shell (402) and abut against the inner wall of the bearing cylinder (3), a wheel shaft (14) is fixedly connected between the pair of rubber wheels (15), the wheel shaft (14) is rotatably connected to the rotating cylinder (13), the rotating cylinder (13) is rotatably connected to the lifting frame (12), the lifting frame (12) is fixedly connected to the movable end of the electric push rod (20), and the fixed end of the electric push rod (20) is fixedly connected to the ball center plate (9); the wheel shaft (14) is connected to the output shaft of the first motor (17) through the first transmission gear group (16), the first motor (17) is fixedly connected to the inner wall of the rotating cylinder (13), the rotating cylinder (13) is connected to the output shaft of the second motor (19) through the second transmission gear group (18), and the second motor (19) is fixedly connected to the lifting frame (12).

2. The on-site surveying and mapping device for engineering garden design according to claim 1, characterized in that: The controller (6) is equipped with an anti-dumping system, which includes a control module. The input end of the control module is connected to a levelness monitoring module and an inclination monitoring module. The input ends of the levelness monitoring module and the inclination monitoring module are both connected to an accelerometer (8). The output end of the control module is respectively connected to a leveling module and a center of gravity adjustment module. The output ends of the leveling module and the center of gravity adjustment module are both connected to a first motor (17) and a second motor (19).

3. The on-site surveying and mapping device for engineering garden design according to claim 2, characterized in that: A fixing ring (304) is fixedly connected to the opening position of the upper end of the carrier tube (3), a buzzer (21) is fixedly connected to the fixing ring (304), an output end of the control module is also connected to an alarm module, and an output end of the alarm module is connected to the buzzer (21).

4. The on-site surveying and mapping device for engineering garden design according to claim 3, characterized in that: A protective cover (24) is provided in the shell wall of the supporting cylinder (3) and is arranged concentrically therewith. The end of the protective cover (24) is connected to a third motor (27) for driving the protective cover to rotate. The output end of the control module is also connected to an anti-collision module. The output end of the anti-collision module is respectively connected to the first motor (17), the second motor (19), the electric push rod (20) and the third motor (27).

5. The on-site surveying and mapping device for engineering garden design according to claim 1, characterized in that: The lower end of the supporting tube (3) is fixedly connected to a nut (23), and the tripod (2) is fixedly connected to a screw rod that matches the nut (23).

6. The on-site surveying and mapping device for engineering garden design according to claim 1, characterized in that: The supporting tube (3) is provided with a spherical cavity with an open upper end, the cross-sectional arc of the spherical cavity is greater than 180 degrees, and the inner wall of the spherical cavity is connected to two groups of balls (22) located on both sides of the center of the sphere and distributed equidistantly around the circumference. A through hole (403) for the roller assembly (11) to pass through is provided at the center of the lower end of the lower spherical shell (402).

7. The on-site surveying and mapping device for engineering garden design according to claim 4, characterized in that: The supporting tube (3) and the protective cover (24) are both in the shape of notched spherical shells, and the curvature of their cross sections is greater than one hundred and eighty degrees. The supporting tube (3) comprises an outer shell (301) and an inner shell (302) arranged concentrically with the outer shell (301). An arc-shaped cavity for accommodating the protective cover (24) is formed between the inner shell (302) and the outer shell (301). The inner shell (302) is fixedly connected to the outer shell (301) via a pair of connecting rods (303).

8. The on-site surveying and mapping device for engineering garden design according to claim 7, characterized in that: The protective cover (24) is fixedly connected to a pair of sleeves (25) rotatably sleeved on the outside of the connecting rod (303), and the sleeves (25) are connected to the output shaft of the third motor (27) through the third transmission gear set (26).

9. The on-site surveying and mapping device for engineering garden design according to claim 4, characterized in that: When in use, the following steps are included: Step 1: Install the tripod (2); at the measurement location, securely connect the tripod (2) to the measurement device (1), and then place the tripod (2) on the ground; Step 2: Automatic leveling; the controller (6) is activated through the touch screen (7), and the controller (6) activates the accelerometer (8) to detect the real-time levelness of the mounting cylinder (4); based on the real-time levelness of the mounting cylinder (4), the controller (6) activates the first motor (17) and the second motor (19) of the roller assembly (11) so that the levelness of the mounting cylinder (4) reaches a set levelness, and then the first motor (17) and the second motor (19) are turned off; Step three, anti-tilt; the tilt angle of the measuring device (1) is monitored in real time by the accelerometer (8); when the tilt angle is greater than a set first tilt angle threshold, the controller (6) starts the first motor (17) and the second motor (19) of the roller assembly (11), so that the counterweight ring (10) moves in the opposite direction of the tilt direction of the measuring device (1) to offset the tilt torque; Step 4, anti-collision: when the accelerometer (8) detects that the tilt angle of the measuring device (1) is greater than the second tilt angle threshold, the following sub-steps are included: S1, the controller (6) starts the third motor (27), the protective cover (24) rotates to the open side of the carrier tube (3) and cooperates with the carrier tube (3) to form a closed cover body, and the third motor (27) is turned off; S2, starting the first motor (17) and the second motor (19), so that the rubber wheel (15) rolls along the inner wall of the bearing cylinder (3) and then enters the protective cover (24); S3, starting the electric push rod (20), so that the rubber wheel (15) abuts against the inner wall of the protective cover (24), and then moving the rubber wheel (15) to the center position of the inner wall of the protective cover (24), and turning off the first motor (17), the second motor (19) and the electric push rod (20).

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