Laser measuring instrument for natural resource planning

Abstract

The invention discloses a laser measuring instrument for natural resource planning, and relates to the technical field of laser measuring instruments, the laser measuring instrument comprises a laser measuring instrument body and an insect expelling assembly assembled on the periphery of the laser measuring instrument body, when the laser measuring instrument body is started to work, a micro motor synchronously started with the laser measuring instrument body starts to operate, and the laser measuring instrument body starts to work; the micro motor drives the rotating gear to rotate through the output shaft, the rotating gear drives the gear teeth meshed with the rotating gear to rotate, the gear teeth drive the rotating fan blades to rotate at a high speed in the inner cavity of the mounting shell, the rotating fan blades rotate to generate airflow, and the airflow sequentially passes through the ventilation opening and the rotating assembly and finally flows out of the air outlet. The airflow flowing out flows along the inner chamfer of the mounting shell, a surrounding fan cover is formed around the lens of the laser measuring instrument body, and the fan cover can repel phototactic insects and prevent the phototactic insects from entering a transmitting or receiving path of a laser beam by means of continuous airflow.

Description

Technical Field

[0001] The present invention relates to the technical field of laser measuring instruments, and in particular to a laser measuring instrument for natural resource planning. Background Art

[0002] Natural resource planning is an important foundation for ensuring national ecological security and promoting sustainable economic and social development. With the continuous improvement of the national land space planning system, higher requirements are placed on the accuracy and timeliness of the collection of key data such as topography, vegetation cover, and land use. These data are not only an important basis for the demarcation of ecological protection red lines and the control of land space use, but also the core support for rational resource development and disaster risk prevention and control. Against this background, laser measuring instruments, with their advantages of high precision, high efficiency and non-contact measurement, have gradually become the core tools for natural resource surveys and monitoring, and are widely used in topographic surveying and mapping, forest resource surveys, dynamic land use monitoring, geological disaster assessment and other fields.

[0003] By emitting laser beams and receiving reflected signals, the laser measuring instrument can quickly obtain the three-dimensional coordinate information of the target object. Its ranging accuracy can reach the centimeter level and the measurement range can reach several kilometers. It is particularly suitable for rapid mapping of complex terrain or large areas.

[0004] However, in actual applications, the outdoor operating environment of laser measuring instruments faces many challenges, among which the problem of insect interference is particularly prominent. Since insects are phototactic, the laser light source of the laser measuring instrument easily attracts flying insects to gather at night or in dimly lit environments, causing insects to frequently fly into the emission or receiving path of the laser beam. Since the insect body blocks the laser beam, the echo signal intensity is weakened or even lost, which directly affects the ranging accuracy. At the same time, data missing or outliers caused by the occlusion will cause holes or deviations in the terrain model, affecting the accuracy of subsequent analysis. Summary of the Invention

[0005] The purpose of the present invention is to solve the many challenges faced by the outdoor operating environment of laser measuring instruments in practical applications, among which the problem of insect interference is particularly prominent. Since insects are phototactic, the laser light source of the laser measuring instrument easily attracts flying insects to gather at night or in a dimly lit environment, causing insects to frequently fly into the emission or receiving path of the laser beam. Since the insect body blocks the laser beam, the echo signal intensity is weakened or even lost, which directly affects the ranging accuracy. At the same time, the data missing or outliers caused by the occlusion will cause holes or deviations in the terrain model, affecting the accuracy of subsequent analysis. A solution is proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solution: a laser measuring instrument for natural resource planning: comprising a laser measuring instrument body, and further comprising: an insect repellent component assembled on the periphery of the laser measuring instrument body;

[0007] The insect repellent assembly includes a mounting shell threadedly connected to the periphery of the laser measuring instrument body, an inner cavity is defined inside the mounting shell, the inner cavity is connected to a micro motor through a mounting bracket on the inner wall, the output shaft of the micro motor is connected to a rotating gear, the inner wall of the inner cavity is rotatably connected to a rotating fan blade, and the inner wall of the rotating fan blade is fixedly connected to a plurality of gear teeth, the gear teeth and the rotating gear are meshed, the inner wall of the mounting shell is defined with a plurality of vents, the interior of the mounting shell is defined with a plurality of air outlets, the vents and the air outlets are connected through a rotating assembly, and the inner wall of the inner cavity is connected to a filter plate;

[0008] The micro motor drives the rotating gear to rotate, and drives the rotating fan blades to rotate to blow air. The blown wind blows along the vents, rotating components and air outlets, and finally flows to form a wind shield to prevent insects from approaching.

[0009] As a further description of the above technical solution:

[0010] An inner chamfer is formed inside the mounting shell.

[0011] As a further description of the above technical solution:

[0012] The rotating assembly comprises a rotating groove which is arranged on the outer periphery of the mounting shell. A rotating knob is rotatably connected to the interior of the rotating groove, and a plurality of connecting ports are arranged inside the rotating knob.

[0013] As a further description of the above technical solution:

[0014] The aperture of the connection port is set to two types. The connection port with a small aperture is the same size as the air outlet, and the connection port with a large aperture is larger than the air outlet.

[0015] As a further description of the above technical solution:

[0016] A plurality of small protrusions are fixedly connected to the outer periphery of the rotating groove.

[0017] As a further description of the above technical solution:

[0018] One side of the installation shell is connected with a plurality of adjustment components, and the adjustment components include a fixing frame fixedly connected to the side surface of the installation shell, and the fixing frame is connected to a rotating member through a positioning rod fixedly connected to the inner wall.

[0019] As a further description of the above technical solution:

[0020] The rotating member comprises a rotating block rotatably connected to the outer periphery of the positioning rod through a torsion spring, a conical plate is fixedly connected to the outer periphery of the rotating block, and a pulling member is connected between the conical plate and the rotating knob.

[0021] As a further description of the above technical solution:

[0022] The pulling member includes a connecting ball fixedly connected to the outer periphery of the conical plate and a fixing block fixedly connected to the side of the rotating knob, and a connecting rope is connected between the connecting ball and the fixing block, and a guide block for guiding the connecting rope is fixedly installed on the outer periphery of the mounting shell.

[0023] As a further description of the above technical solution:

[0024] Slots are formed on both sides of the conical plate, and rubber expansion sheets are connected between adjacent slots.

[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0026] By providing an insect repellent component, an adjustment component, and a rotating component, when the laser measuring instrument body starts working, the micro motor started synchronously therewith begins to operate, and the micro motor drives the rotating gear to rotate through the output shaft, and the rotating gear in turn drives a number of gear teeth meshing with it to rotate, and these gear teeth in turn drive the rotating fan blades to rotate at high speed in the inner cavity of the mounting shell. The rotation of the rotating fan blades generates airflow, which passes through the vents and the rotating component in sequence and finally flows out from the air outlet. The airflow after flowing out flows along the inner chamfer of the mounting shell, forming a surrounding wind shield around the lens of the laser measuring instrument body. This wind shield can drive away phototactic insects by virtue of continuous airflow, preventing them from entering the emission or reception path of the laser beam;

[0027] To further enhance the protective capability of the wind shield and enable it to resist the intrusion of large insects, just turn the rotary knob and rotate it along the rotating slot, and the connectors of different apertures will be connected to the air outlet in turn. When the small-aperture connector is connected to the air outlet, the airflow is not accelerated during the passage. At this time, the strength of the wind shield is relatively weak, but it is enough to prevent small insects from approaching. It is suitable for situations where the number of insects is small or the size is small. When the large-aperture connector is connected to the air outlet, the airflow will flow along the large-aperture connector. When the airflow passes through the chamfered part of the air outlet, the airflow will be accelerated due to the squeezing and guiding effect of the chamfer on the airflow, so that the wind speed flowing out of the air outlet is accelerated and the strength of the wind shield is significantly enhanced. This strong wind shield can effectively block large insects, provide more reliable protection for the laser measuring instrument body, and ensure its stable operation in complex and changeable outdoor environments.

[0028] In the initial state, several conical plates fit together. At this time, the wind flowing along the chamfers inside the mounting shell will contact the inner walls of these conical plates and continue to flow along the inner walls of the conical plates, thereby forming a longer conical wind shield, further preventing insects from approaching the measuring instrument lens. When it is necessary to adjust the range of the wind shield according to actual conditions, the rotary knob is turned again. During the rotation of the rotary knob, several fixed blocks will be driven to move together. As the fixed block moves, it will pull the connecting rope to move inside the guide block. Since the length of the connecting rope is fixed, when the connecting rope moves, it will synchronously pull the connecting ball to move, and the connecting ball will pull the rotating block connected to the conical plate connected to it, so that the rotating block rotates with the positioning rod as the center and expands outward;

[0029] As the conical plates extend outward, the torsion springs are squeezed, and at the same time, the rubber expansion strips between adjacent conical plates extend to fill any gaps that may appear between them. When the conical plates extend outward, the path along which the wind flows becomes longer, and the resulting wind shield becomes longer, covering a larger area and providing more comprehensive protection for the measuring instrument. In addition, by controlling the rotation of the rotary knob, not only can the large and small aperture connection ports be switched, but the wind speed can also be switched smoothly when the conical plates are extended, meeting the insect prevention needs in different scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Shows a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 The present invention is shown Figure 1 Schematic diagram of disassembled structure;

[0032] Figure 3 Shows a schematic diagram of the installation shell of the present invention;

[0033] Figure 4 Shows a schematic structural diagram of the insect repellent assembly of the present invention;

[0034] Figure 5 A schematic diagram of the rotary blade structure of the present invention is shown;

[0035] Figure 6 Shows a schematic structural diagram of the rotating assembly of the present invention;

[0036] Figure 7 Shows a schematic structural diagram of the regulating assembly of the present invention;

[0037] Figure 8 The present invention is shown Figure 7 A partial enlarged view of point A in the middle.

[0038] Legend:

[0039] 10. Laser measuring instrument body;

[0040] 20. Insect repellent assembly; 21. Mounting housing; 22. Inner cavity; 23. Mounting frame; 24. Micro motor; 241. Rotating gear; 25. Rotating fan blades; 26. Gear teeth; 27. Ventilation port; 28. Air outlet; 29. ​​Filter plate;

[0041] 30. Rotating assembly; 31. Rotating slot; 311. Rotating knob; 32. Connecting port;

[0042] 40. Adjustment assembly; 41. Fixing frame; 42. Positioning rod; 43. Rotating block; 44. Conical plate; 441. Slot; 442. Rubber expansion piece; 45. Torsion spring; 46. Guide block; 461. Connecting rope; 462. Connecting ball; 463. Fixing block. DETAILED DESCRIPTION

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making any creative efforts shall fall within the scope of protection of the present invention.

[0044] like Figures 1-8 As shown, the present invention provides a laser measuring instrument for natural resource planning: comprising a laser measuring instrument body 10, and also comprising: an insect repellent assembly 20 assembled on the periphery of the laser measuring instrument body 10, the insect repellent assembly 20 comprising a mounting shell 21 threadedly connected to the periphery of the laser measuring instrument body 10, an inner cavity 22 is formed inside the mounting shell 21, the inner cavity 22 is connected to a micro motor 24 through a mounting bracket 23 on the inner wall, the output shaft of the micro motor 24 is connected to a rotating gear 241, and the inner wall of the inner cavity 22 is rotatably connected to a rotating fan blade 25, and the inner wall of the rotating fan blade 25 is fixedly connected to a plurality of gear teeth 26, which mesh with the rotating gear 241. The inner wall of the mounting shell 21 is provided with a plurality of vents 27, and the interior of the mounting shell 21 is provided with a plurality of air outlets 28. One side of the air outlet 28 is provided with a chamfer. The vents 27 and the air outlet 28 are connected through a rotating assembly 30. The inner wall of the inner cavity 22 is connected to a filter plate 29, which can prevent insects from entering the inner cavity 22. The interior of the mounting shell 21 is provided with an inner chamfer.

[0045] Before using the outdoor laser measuring instrument body 10, you need to first tighten the mounting shell 21 to the outer periphery of the lens of the laser measuring instrument body 10 through threads to ensure that the mounting shell 21 and the lens are sealed. Then, support the laser measuring instrument body 10 with the support legs and place it in a suitable measurement position.

[0046] When the laser measuring instrument body 10 starts working, the micro motor 24 is started synchronously. The micro motor 24 drives the rotating gear 241 to rotate through the output shaft. During the rotation process, the rotating gear 241 drives the plurality of gear teeth 26 meshing with it to rotate. These gear teeth 26 then drive the rotating blades 25 to rotate in the inner cavity 22 of the mounting shell 21.

[0047] When the rotating fan blades 25 rotate, airflow is generated. The airflow flows along the vents 27 and the rotating assembly 30 and finally flows out from the air outlet 28. The airflow flowing out of the air outlet 28 flows along the inner chamfer of the mounting shell 21, thereby forming a wind shield around the lens of the laser measuring instrument body 10. The wind shield drives away phototactic insects through continuous airflow and prevents them from entering the emission or reception path of the laser beam. This wind shield can effectively prevent insects from approaching the lens of the laser measuring instrument body 10, thereby preventing insects from obstructing the normal operation of the laser measuring instrument body 10.

[0048] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 6 As shown, the rotating assembly 30 includes a rotating slot 31 formed on the outer periphery of the mounting housing 21. A plurality of small protrusions are fixedly connected to the outer periphery of the rotating slot 31. A rotating knob 311 is rotatably connected to the interior of the rotating slot 31. The interior of the rotating knob 311 has a plurality of connecting ports 32 formed therein. The connecting ports 32 have two apertures. The small-aperture connecting ports 32 are the same size as the air outlet 28, and the large-aperture connecting ports 32 have an aperture larger than the air outlet 28.

[0049] To enhance the strength of the wind shield so that it can effectively resist large insects, the rotary knob 311 is turned to rotate along the rotation slot 31. As the rotary knob 311 is turned, the connection ports 32 of different apertures are connected to the air outlet 28 in sequence.

[0050] When the small-aperture connection port 32 is connected to the air outlet 28, the airflow is not accelerated during the passage, and the wind shield formed is weak in strength and can only block small insects.

[0051] When the large-aperture connecting port 32 is connected to the air outlet 28, the airflow will flow along the large-aperture connecting port 32. When the airflow passes through the chamfered portion of the air outlet 28, the airflow will be accelerated due to the squeezing and guiding effect of the chamfer on the airflow. In this way, the wind speed flowing out along the air outlet 28 is accelerated, and the strength of the wind shield formed is significantly enhanced, which can effectively block large insects.

[0052] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 7 、 Figure 8As shown, one side of the mounting shell 21 is connected to a plurality of adjustment components 40, and the adjustment component 40 includes a fixing frame 41 fixedly connected to the side of the mounting shell 21, and the fixing frame 41 is connected to a rotating member through a positioning rod 42 fixedly connected to the inner wall, and the rotating member includes a rotating block 43 rotatably connected to the outer periphery of the positioning rod 42 through a torsion spring 45. The outer periphery of the rotating block 43 is fixedly connected to a conical plate 44, and both sides of the conical plate 44 are provided with slots 441, and a rubber expansion piece 442 is connected between adjacent slots 441. The conical plate 44 and A pulling member is connected between the rotating knobs 311. The pulling member includes a connecting ball 462 fixedly connected to the outer periphery of the conical plate 44 and a fixing block 463 fixedly connected to the side of the rotating knob 311. A connecting rope 461 is connected between the connecting ball 462 and the fixing block 463. The length of the connecting rope 461 is fixed. A guide block 46 for guiding the connecting rope 461 is fixedly mounted on the outer periphery of the mounting housing 21. Friction exists between the rotating knob 311 and the small protrusions on the outer periphery of the rotating slot 31, and this friction is greater than the resilience of the torsion springs 45.

[0053] In the initial state, the plurality of conical plates 44 are fitted together. At this time, the wind flowing along the chamfered corners of the mounting shell 21 will contact the inner walls of these conical plates 44 and continue to flow along the inner walls of the conical plates 44, thereby forming a longer conical wind shield, effectively preventing insects from approaching the measuring instrument lens.

[0054] When the wind shield needs to be adjusted to cope with different situations, the rotating knob 311 is turned to rotate it along the rotating slot 31. During the rotation process, the rotating knob 311 will drive several fixed blocks 463 to move together. As the fixed blocks 463 move, they will pull the connecting rope 461 to move in the guide block 46. Since the length of the connecting rope 461 is fixed, when the connecting rope 461 moves, it will synchronously pull the connecting ball 462 to move, and the connecting ball 462 will pull the rotating block 43 connected to the conical plate 44 connected to it, so that the rotating block 43 rotates with the positioning rod 42 as the center and expands outward;

[0055] As the conical plates 44 expand outward, they compress the torsion springs 45. Simultaneously, the rubber expansion strips 442 between adjacent conical plates 44 expand accordingly, thereby filling any gaps that may appear between the adjacent conical plates 44. As the conical plates 44 expand outward, the path along which the wind flows becomes longer, and the resulting wind shield becomes longer.

[0056] In addition, by controlling the rotation of the rotary knob 311, the switching between the large-aperture connection port 32 and the small-aperture connection port 32 can be achieved. When the large-aperture connection port 32 is connected to the air outlet 28, the wind will pass through faster, forming a stronger wind shield. When the small-aperture connection port 32 is connected to the air outlet 28, the wind speed is normal, and the wind shield strength formed is relatively weak.

[0057] When the conical plate 44 needs to be reset, it is only necessary to rotate the rotary knob 311 in the opposite direction. At this time, the torsion spring 45 in the squeezed state will begin to rebound, and the rebounding torsion spring 45 will pull the rotating block 43, so that the rotating block 43 drives the conical plate 44 to reset. During the resetting process, the conical plate 44 will pull the connecting rope 461 through the connecting ball 462 to ensure that the connecting rope 461 is always in a taut state. At the same time, the adjacent conical plates 44 will retract into each other, and the rubber expansion piece 442 that was originally in a stretched state will retract accordingly, and eventually return to the slot 441 and return to its initial state.

[0058] Working Principle: Before using the outdoor laser measuring instrument body 10, first tighten the mounting shell 21 to the outer periphery of the lens of the laser measuring instrument body 10 through threads to ensure that the two are sealed and fit together. Then, use the support legs to support the laser measuring instrument body 10 and place it in the appropriate measurement position;

[0059] When the laser measuring instrument body 10 is working, the micro motor 24 is started synchronously. The micro motor 24 drives the rotating gear 241 to rotate through the output shaft, thereby driving the plurality of gear teeth 26 meshing with the micro motor to rotate. These gear teeth 26 then drive the rotating blades 25 to rotate in the inner cavity 22 of the mounting shell 21.

[0060] The rotating blades 25 generate airflow, which flows through the vents 27 and the rotating assembly 30 and finally flows out from the air outlet 28. The outflow air flows along the chamfer inside the mounting shell 21, forming a wind shield around the lens of the laser measuring instrument body 10. The wind shield uses continuous airflow to drive away phototactic insects, preventing them from entering the laser beam emission or reception path, thereby preventing insects from interfering with the normal operation of the measuring instrument.

[0061] To enhance the strength of the wind shield to resist large insects, the rotary knob 311 is turned to rotate it along the rotating slot 31, and the connecting ports 32 of different apertures are sequentially connected to the air outlet 28. When the small-aperture connecting port 32 is connected to the air outlet 28, the airflow is not accelerated, the wind shield strength is weak, and it can only block small insects. When the large-aperture connecting port 32 is connected to the air outlet 28, the airflow is accelerated through the chamfer of the air outlet 28, the wind speed is increased, and the wind shield strength is significantly enhanced, which can effectively block large insects.

[0062] In the initial state, several conical plates 44 fit together, and the wind flowing along the chamfers in the mounting shell 21 contacts the inner wall of the conical plates 44 and continues to flow, forming a longer conical wind shield to prevent insects from approaching the lens. When the wind shield needs to be adjusted, the rotary knob 311 is turned to drive the fixed block 463 to move, and then the connecting rope 461 is pulled to move in the guide block 46. Since the length of the connecting rope 461 is fixed, the connecting ball 462 will be pulled synchronously, so that the rotating block 43 connected to the conical plate 44 connected thereto rotates and extends outward with the positioning rod 42 as the center of the circle, and at the same time, the torsion spring 45 is squeezed. At this time, the rubber expansion piece 442 between the adjacent conical plates 44 extends to fill the gap. The outward extension of the conical plate 44 makes the air flow path longer and the wind shield longer. By controlling the rotation of the rotary knob 311, the large and small aperture connecting ports 32 can be switched, and the wind speed switching can also be achieved when the conical plate 44 is extended.

[0063] When the conical plate 44 needs to be reset, the rotary knob 311 is rotated in the opposite direction, the torsion spring 45 in the squeezed state rebounds, and the rotating block 43 is pulled to drive the conical plate 44 to reset. During the reset process, the conical plate 44 pulls the connecting rope 461 through the connecting ball 462 to keep it taut. At the same time, the adjacent conical plates 44 retract, and the rubber expansion piece 442 retracts and returns to the slot 441 to restore the initial state.

[0064] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A laser measuring instrument for natural resource planning, comprising a laser measuring instrument body (10), characterized in that: Also includes: An insect repellent assembly (20) assembled on the periphery of the laser measuring instrument body (10); The insect repellent assembly (20) comprises a mounting shell (21) threadedly connected to the outer periphery of the laser measuring instrument body (10); an inner cavity (22) is provided inside the mounting shell (21); the inner cavity (22) is connected to a micro motor (24) via a mounting bracket (23) on the inner wall; the output shaft of the micro motor (24) is connected to a rotating gear (241); the inner wall of the inner cavity (22) is rotatably connected to a rotating blade (25); and the inner wall of the rotating blade (25) is fixedly connected to a plurality of gear teeth (26); the gear teeth (26) and the rotating gear (241) are meshed; the inner wall of the mounting shell (21) is provided with a plurality of vents (27); the inner wall of the mounting shell (21) is provided with a plurality of air outlets (28); the vents (27) and the air outlets (28) are communicated with each other via a rotating assembly (30); and the inner wall of the inner cavity (22) is connected to a filter plate (29); The micro motor (24) drives the rotating gear (241) to rotate, and drives the rotating fan blades (25) to rotate and blow air. The blown air is blown along the vent (27), the rotating component (30) and the air outlet (28), and finally flows to form a wind shield to prevent insects from approaching.

2. A laser measuring instrument for natural resource planning according to claim 1, characterized in that: The interior of the mounting shell (21) is provided with an inner chamfer.

3. The laser measuring instrument for natural resource planning according to claim 1, characterized in that: The rotating assembly (30) includes a rotating groove (31) provided on the outer periphery of the mounting shell (21), a rotating knob (311) is rotatably connected to the interior of the rotating groove (31), and a plurality of connecting ports (32) are provided inside the rotating knob (311).

4. A laser measuring instrument for natural resource planning according to claim 3, characterized in that: The connection port (32) has two apertures: the connection port (32) with a small aperture is the same size as the air outlet (28); and the connection port (32) with a large aperture is larger than the air outlet (28).

5. The laser measuring instrument for natural resource planning according to claim 4, characterized in that: A plurality of small protrusions are fixedly connected to the outer periphery of the rotating groove (31).

6. The laser measuring instrument for natural resource planning according to claim 3, characterized in that: One side of the mounting shell (21) is connected to a plurality of adjustment components (40), the adjustment components (40) comprising a fixing frame (41) fixedly connected to the side of the mounting shell (21), and the fixing frame (41) is connected to a rotating member via a positioning rod (42) fixedly connected to the inner wall.

7. A laser measuring instrument for natural resource planning according to claim 6, characterized in that: The rotating member comprises a rotating block (43) rotatably connected to the outer periphery of the positioning rod (42) via a torsion spring (45); a conical plate (44) is fixedly connected to the outer periphery of the rotating block (43); and a pulling member is connected between the conical plate (44) and the rotating knob (311).

8. The laser measuring instrument for natural resource planning according to claim 7, characterized in that: The pulling member comprises a connecting ball (462) fixedly connected to the outer periphery of the conical plate (44) and a fixing block (463) fixedly connected to the side of the rotating knob (311), a connecting rope (461) is connected between the connecting ball (462) and the fixing block (463), and a guide block (46) for guiding the connecting rope (461) is fixedly installed on the outer periphery of the mounting shell (21).

9. The laser measuring instrument for natural resource planning according to claim 8, characterized in that: Slots (441) are provided on both sides of the conical plate (44), and rubber expansion sheets (442) are connected between adjacent slots (441).

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