Surveying and mapping device for forestry design planning

Abstract

The invention relates to the technical field of forestry design planning, in particular to a surveying and mapping device for forestry design planning, which comprises a crawler-type climbing carrier and a self-calibration mechanism, the system comprises a crawler-type climbing carrier, a suspension mechanism installed on the crawler-type climbing carrier, a supporting mechanism installed on the suspension mechanism, a base point positioning assembly assembled on the supporting mechanism and a self-calibration mechanism installed in the supporting mechanism. The crawler-type climbing carrier is used for climbing a forest area and a mountain land. The self-calibration mechanism which is most convenient and rapid to calibrate is arranged for a level gauge, a total station, an altimeter and the like, and the supporting mechanism is used for adjusting the tension of the self-calibration mechanism, so that a plurality of supported instruments can be rapidly calibrated in a hovering state; at the moment, various instruments can obtain hang surveying and mapping on the complex terrain of the forest region under the auxiliary action of the device, so that complex processes such as calibration and site selection of traditional instruments are reduced, and meanwhile, the surveying and mapping precision of various instruments can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of forestry design and planning, and in particular to a surveying and mapping device used for forestry design and planning. Background Art

[0002] Forestry resources are an important part of my country's natural resources. The development of forestry is not only related to ecological construction, but also has an important impact on social and economic development. Therefore, accurate surveying and mapping are required for forestry design and planning.

[0003] The invention with announcement number CN118499635A discloses a surveying and mapping device for forestry design and planning. The application performs initial leveling by means of cooperation between a fixed frame and a level, drives a U-shaped slot block to rotate around a first rotation axis to adjust the angle through a first angle adjustment component, drives a positioning frame to rotate around a second rotation axis to adjust the angle through a second angle adjustment component, measures the offset angle of the positioning frame of the device after the position is changed based on the gyro positioning device based on the gyro effect, displays the angle measured by the gyro positioning device through an angle display component, and fixes and installs a laser through the cooperation of a clamping component with a connecting tube and a connecting ring, and has the feature of only using a level for the first time.

[0004] However, the above scheme only adjusts the level and simplifies the operating steps of the level. One of the forestry surveying and mapping is elevation surveying, which includes the use of instruments such as levels, total stations, and altimeters. However, these instruments have extremely high requirements on the forestry topography before use. Forestry elevation surveying and mapping is a long-term detection process, and the above scheme ignores the specific factor of topography, so there is no clear benchmark point. Accordingly, the benchmark point cannot be effectively protected by protective measures. Summary of the invention

[0005] The present invention aims to solve one of the technical problems existing in the prior art or related technology.

[0006] To this end, the technical solution adopted in the present invention is: A surveying and mapping device for forestry design and planning, comprising a crawler-type climbing vehicle and a level, a suspension mechanism installed on the crawler-type climbing vehicle, a support mechanism installed on the suspension mechanism, a base point positioning component assembled on the support mechanism, and a self-calibration mechanism installed in the support mechanism; the crawler-type climbing vehicle is used to climb mountains in forest areas and provide a stable support platform for subsequent instruments; the suspension mechanism comprises a hydraulic component installed on the crawler-type climbing vehicle and a suspension mounted on a hydraulic sub-rod in the hydraulic component; the support mechanism comprises a bottom frame installed on the suspension, two clamping plates movably mounted on the bottom frame, and a linkage rod arranged in a hole in the bottom frame; the base point positioning component comprises a load-bearing screw installed outside the linkage rod, a second spring arranged in the load-bearing screw, and a benchmark rod movably mounted inside the load-bearing screw; the self-calibration mechanism comprises a locking component installed between the two clamping plates, a driving component arranged at the bottom of the locking component, and a pressure-bearing component installed in the locking component; the level is installed on the pressure-bearing component and is used to survey and map the elevation of mountains in forest areas.

[0007] In a preferred example, the present invention can be further configured as follows: the suspension mechanism further includes a crossbeam fixedly mounted on the top of the hydraulic component mother rod, two first clamps fixedly mounted on both ends of the inner side of the crossbeam, two second clamps fixedly mounted on the suspension, and a reset assembly movably mounted on the first clamp and the second clamp; The reset assembly consists of a telescopic mother rod, a telescopic sub-rod and a sub-spring arranged in the telescopic mother rod.

[0008] In a preferred example, the present invention can be further configured as follows: the support mechanism also includes a bearing fixedly installed in the internal hole of the bottom frame, the linkage rod is installed in the bearing, a guide rod is installed on the outside of the clamping plate, a limiting member is installed on the outside of the bottom frame, and a first spring is arranged on the guide rod body.

[0009] In a preferred example, the present invention can be further configured as follows: a limiting slideway is provided inside the limiting member; The guide rod is composed of a rectangular pad and a T-shaped rod body, and the T-shaped rod body is adapted to penetrate into the interior of the limiter, the bottom of the first spring is pressed on the bottom end of the T-shaped rod body, and the top of the first spring is pressed on the bottom of the limiter.

[0010] In a preferred example, the present invention can be further configured as follows: a cross-shaped socket is provided at the top of the linkage rod, and a columnar socket adapted to the pole is provided inside the linkage rod.

[0011] In a preferred example, the present invention can be further configured as follows: two screw holes are opened in the end tube at the top of the load-bearing screw, and fastening bolts adapted to be pressed against the linkage rod are arranged in the screw holes.

[0012] In a preferred example, the present invention can be further configured as follows: the locking assembly includes a bracket movably mounted between two clamping plates, a hanger mounted on the bracket, a compression spring connected to the hanger, a pressing piece movably mounted on a rod body of the bracket, a pull rod movably connected in the pressing piece, and a screw sleeve movably connected to the bottom end of the pull rod; The compression spring is composed of two U-shaped clamps and a circular pad; The bottom end of the screw sleeve is provided with a cross-shaped slot.

[0013] In a preferred example, the present invention can be further configured as follows: the pressure-bearing assembly includes a column installed inside the bracket, a latch inserted inside the column, two jackets installed at the bottom of the column, and studs movably installed inside the two jackets; The stud is adapted to penetrate into the interior of the threaded sleeve.

[0014] In a preferred example, the present invention can be further configured as follows: the driving assembly includes a chassis installed outside the compression spring, an end tube fixedly installed at the bottom of the chassis, a clamp seat movably installed inside the end tube, a dual-axis motor installed inside the clamp seat, and a distance control frame installed outside the clamp seat.

[0015] In a preferred example, the present invention can be further configured as follows: a nut bearing pressure on the distance control frame is arranged on the outside of the end tube, and a cross-shaped plug is arranged on the top and bottom transmission shafts of the dual-axis motor.

[0016] By adopting the above technical solution, the beneficial effects achieved by the present invention are: 1. The present invention provides the most convenient and fast calibration self-calibration mechanism for levels, total stations, altimeters, etc., and uses the support mechanism to adjust the tension of the self-calibration mechanism. Multiple instruments supported can be quickly calibrated in a hovering state. At this time, various instruments can be assisted by the device to obtain hovering mapping on the more complex terrain in the forest area, thereby reducing the complex processes such as calibration site selection of traditional instruments and improving the mapping accuracy of various instruments.

[0017] 2. The present invention assembles a detachable load-bearing screw at the bottom end of the linkage rod. After the load-bearing screw is drilled into the selected ground, the relaxed benchmark can quickly bounce up at the moment the linkage rod is detached. At this time, after the benchmark that bounces up at the base point is established, it can provide long-term and stable surveying and mapping indicators for various calibrated instruments, thereby ensuring the permanence and stability of the base point while ensuring the comparability and accuracy of subsequent measurement data. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the present invention when used; Figure 2 is a schematic diagram of the suspension mechanism of the present invention; Figure 3 It is a bottom view schematic diagram of a part of the present invention; Figure 4 is a schematic diagram of the support mechanism of the present invention; Figure 5 For the present invention Figure 4 The enlarged schematic diagram of point A in the middle; Figure 6 For the present invention Figure 4 The enlarged schematic diagram of point B in the middle; Figure 7 It is a partial schematic diagram of the present invention; Figure 8 is a schematic diagram of the self-calibration mechanism of the present invention; Fig. 9 It is an exploded schematic diagram of the locking assembly and the pressure-bearing assembly of the present invention; Fig.10 Schematic diagram of the drive assembly of the present invention.

[0019] Reference numerals: 100. Tracked climbing vehicle; 200, suspension mechanism; 210, hydraulic component; 220, crossbeam; 230, first clamp; 240, reset assembly; 250, suspension; 260, second clamp; 300, support mechanism; 310, bottom frame; 320, clamping plate; 330, bearing; 340, linkage rod; 350, limiter; 360, guide rod; 370, first spring; 400, base point positioning assembly; 410, load-bearing screw; 420, benchmark; 430, second spring; 500, self-calibration mechanism; 510, locking assembly; 511, bracket; 512, lifting device; 513, compression spring; 514, pressing piece; 515, pull rod; 516, screw sleeve; 520, pressure-bearing assembly; 521, column; 522, latch; 523, jacket; 524, stud; 530, driving assembly; 531, chassis; 532, end pipe; 533, clamp seat; 534, dual-axis motor; 535, distance control frame; 600. Level instrument. DETAILED DESCRIPTION

[0020] To make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below in combination with specific implementations and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0021] It is to be understood that these descriptions are exemplary only and are not intended to limit the scope of the invention.

[0022] A surveying and mapping device for forestry design and planning provided by some embodiments of the present invention will be described below in conjunction with the accompanying drawings. Embodiment 1:

[0023] Combination Figure 1-Figure 10 As shown, the present invention provides a surveying and mapping device for forestry design and planning, including a crawler climbing vehicle 100 and a level 600, a suspension mechanism 200 installed on the crawler climbing vehicle 100, a support mechanism 300 installed on the suspension mechanism 200, a base point positioning component 400 assembled on the support mechanism 300, and a self-calibration mechanism 500 installed in the support mechanism 300.

[0024] The suspension mechanism 200 includes a hydraulic component 210, a crossbeam 220, a first clamp 230, a reset assembly 240, a suspension 250 and a second clamp 260. The support mechanism 300 includes a bottom frame 310, a clamp plate 320, a bearing 330, a linkage rod 340, a stopper 350, a guide rod 360 and a first spring 370. The base point positioning assembly 400 includes a load-bearing screw 410, a benchmark rod 420 and a second spring 430. The self-calibration mechanism 500 includes It includes a locking assembly 510, a pressure-bearing assembly 520 and a driving assembly 530, and the locking assembly 510 also includes a bracket 511, a hanger 512, a compression spring 513, a clamping piece 514, a pull rod 515 and a screw sleeve 516, the pressure-bearing assembly 520 also includes a column 521, a pin 522, a sleeve 523 and a stud 524, and the driving assembly 530 also includes a chassis 531, an end pipe 532, a clamp seat 533, a dual-axis motor 534 and a distance control frame 535.

[0025] Among them, the crawler climbing vehicle 100 is used to climb the forest and mountain areas, and provide a stable support platform for subsequent instruments; The suspension mechanism 200 includes a hydraulic component 210 mounted on the crawler climbing vehicle 100, a suspension 250 mounted on a hydraulic sub-rod in the hydraulic component 210, a crossbeam 220 fixedly mounted on the top of the mother rod of the hydraulic component 210, two first clamps 230 fixedly mounted on both ends of the inner side of the crossbeam 220, two second clamps 260 fixedly mounted on the suspension 250, and a reset assembly 240 movably mounted on the first clamp 230 and the second clamp 260; The reset assembly 240 is composed of a telescopic mother rod, a telescopic sub-rod, and a sub-spring arranged in the telescopic mother rod; The supporting mechanism 300 includes a bottom frame 310 mounted on the suspension 250, two clamping plates 320 movably mounted on the bottom frame 310, and a linkage rod 340 disposed in a hole of the bottom frame 310; The base point positioning assembly 400 includes a load-bearing screw 410 installed outside the linkage rod 340, a second spring 430 disposed inside the load-bearing screw 410, and a reference rod 420 movably installed inside the load-bearing screw 410; Two screw holes are provided in the end tube at the top of the load-bearing screw 410, and fastening bolts adapted to be pressed against the linkage rod 340 are provided in the screw holes; The self-calibration mechanism 500 includes a locking assembly 510 installed between two clamping plates 320, a driving assembly 530 disposed at the bottom of the locking assembly 510, and a pressure-carrying assembly 520 installed in the locking assembly 510; The level 600 is installed on the pressure-bearing assembly 520 and is used to measure the elevation of the forest mountain area.

[0026] Traditional instruments such as levels, total stations, and altimeters need to be calibrated and adjusted using support frames when used in forest and mountainous areas. However, the use of support frames requires cumbersome adjustments to each instrument, and the adjustment cycle is long. In addition, the support frames have low compressive strength and are easily overturned by human factors or interference from hillside airflow. At the same time, the lens of the instrument is prone to shaking in the airflow.

[0027] In addition, mapping the elevation of mountains in forest areas is a long process, so each instrument needs a unified base point for mapping. However, in traditional mapping methods, the base points of mountains do not have protection and bearing capacity, which will affect the periodic mapping of subsequent instruments.

[0028] The device provides a mobile platform for self-calibration of each instrument through micro-machines. After the crawler-type climbing vehicle 100 is moved to the designated location in the forest mountain area through cloud control, the stopped crawler-type climbing vehicle 100 can provide a sufficiently stable support platform for the above-mentioned components. When instruments such as the level, total station, and altimeter are installed on the top of the column 521, the bracket 511 and the hanger 512 installed on the outside of the column 521 can cooperate with the driving component 530 in the counterweight state to provide automatic calibration for each assembled instrument, and adjust the opening and closing of the combined rear pull rod 515 and the clamping piece 514 through the stud 524. Finally, the calibrated instruments can be fixed. After the instruments are calibrated, the hydraulic sub-rod in the hydraulic component 210 drops downward, and the suspension 250 installed on the top thereof drives the bottom frame 310 and the linkage rod 340 to drop downward until the load-bearing screw 410 installed on the outside of the linkage rod 340 is driven and drilled into the ground. The erected load-bearing screw 410 can serve as the supporting body of the benchmark, and finally the benchmark 420 will be quickly bounced up by the second spring 430. At this time, the benchmark 420 and the load-bearing screw 410 in the extended state can be used to set multiple surveying base points in the wild mountains, and the base points can be protected from impact by foreign objects. Embodiment 2:

[0029] Combination Figure 4-Figure 7As shown, on the basis of Example 1, the support mechanism 300 further includes a bearing 330 fixedly mounted in a hole inside the bottom frame 310, a linkage rod 340 is mounted in the bearing 330, a guide rod 360 is mounted on the outside of the clamping plate 320, a limit member 350 is mounted on the outside of the bottom frame 310, and a first spring 370 is arranged on the rod body of the guide rod 360; A limiting slideway is provided inside the limiting member 350; The guide rod 360 is composed of a rectangular pad and a T-shaped rod body, and the T-shaped rod body is adapted to penetrate the interior of the stopper 350, the bottom of the first spring 370 is pressed on the bottom end of the T-shaped rod body, and the top of the first spring 370 is pressed on the bottom of the stopper 350; A cross-shaped socket is provided at the top of the linkage rod 340 , and a column-shaped socket adapted to the marking rod 420 is provided inside the linkage rod 340 .

[0030] The length of the plates at both ends of the bottom frame 310 is twice the length of the splint 320. Therefore, when a counterweight assembly is set on the inner side of the bottom frame 310, the two splints 320 movably installed on the plates at both ends of the bottom frame 310 can provide calibration adjustment force for the instrument to be assembled, and ultimately can effectively ensure that the instrument can be quickly positioned and calibrated in the mountains after assembly.

[0031] By installing the linkage rod 340 in the bearing 330, as the nut on the end tube 532 is adjusted and rotated by the wrench, the distance control frame 535 pushed downward can drive the dual-axis motor 534 to descend as a whole, and finally the transmission shaft at the bottom end of the dual-axis motor 534 will dock with the dual-axis motor 534, and the docked linkage rod 340 can provide driving force for the assembled load-bearing screws 410, and finally the base point positioning assembly 400 in high-speed rotation can be drilled into the ground of the selected coordinates as a whole, and the load-bearing screws 410 drilled into the ground can provide effective pressure protection for the benchmark 420, so as to provide guidance for the long-term surveying and mapping of various instruments. Embodiment three:

[0032] Combination Fig. 9 As shown, on the basis of Example 1, the locking assembly 510 includes a bracket 511 movably mounted between the two clamping plates 320, a hanger 512 mounted on the bracket 511, a compression spring 513 connected to the hanger 512, a pressing piece 514 movably mounted on the rod body of the bracket 511, a pull rod 515 movably connected in the pressing piece 514, and a screw sleeve 516 movably connected to the bottom end of the pull rod 515; The compression spring 513 is composed of two U-shaped clamps and a circular pad; The bottom end of the screw sleeve 516 is provided with a cross-shaped slot; The pressure-bearing assembly 520 includes a column 521 installed inside the bracket 511, a latch 522 inserted inside the column 521, two jackets 523 installed at the bottom of the column 521, and a stud 524 movably installed inside the two jackets 523; The stud 524 is adapted to penetrate into the interior of the threaded sleeve 516 .

[0033] The two sleeves 523 clamped on the top of the stud 524 are fixed to the bottom of the column 521 by multiple bolts. At this time, the stud 524 can be clamped in a limited position. When the nut on the end tube 532 moves upward, the compression spring 513 will prompt the distance control frame 535 to lift upward, and the supported dual-axis motor 534 will lift upward. Finally, the top transmission shaft of the dual-axis motor 534 will dock with the stud 524. At this time, the rotating stud 524 will prompt the screw sleeve 516 to rise and fall stably. At this time, the two pull rods 515 movably installed on the screw sleeve 516 can simultaneously push the two clamping parts 514 to extend in the same direction, thereby effectively ensuring that the device provides calibrated locking for the instrument installed on the top of the column 521. Embodiment 4:

[0034] Combination Fig. 9 and Fig.10 As shown, in the above embodiment, the driving assembly 530 includes a chassis 531 installed outside the compression spring 513, an end tube 532 fixedly installed at the bottom of the chassis 531, a clamping seat 533 movably installed inside the end tube 532, a dual-axis motor 534 installed inside the clamping seat 533, and a distance control frame 535 installed outside the clamping seat 533; The outside of the end tube 532 is provided with a nut which bears pressure on the distance control frame 535 , and the top and bottom transmission shafts of the dual-axis motor 534 are both provided with a cross-shaped plug.

[0035] By installing the dual-axis motor 534 inside the clamp seat 533, the center of gravity of the dual-axis motor 534 and the clamp seat 533 installed inside the chassis 531 can be maintained constant after repeated lifting and lowering, and the driving component 530 with a constant center of gravity is suspended as a whole by the compression spring 513 directly below each assembled instrument. At this time, the driving component 530 in a suspended state can act as a counterweight component to provide calibration force for the instrument. Through the center calibration of the counterweight module, the rapid calibration of the instrument after assembly can be improved.

[0036] The working principle and use process of the present invention are as follows: the device is transported to the vicinity of the forest area by a towing vehicle in advance, and then the crawler climbing vehicle 100 is controlled by the cloud to climb along the route of the forest area until the device moves to the designated coordinates of the forest area, and then the crawler climbing vehicle 100 can be stopped.

[0037] At this time, the location of the device is the base point with surveying elevation, and then the level 600, total station, altimeter and other equipment are installed on the top of the column 521, and the above instruments are loaded and unloaded according to the order of use using the latch 522. When the instrument is assembled, the instrument supported by the column 521 can be used to survey the forest mountain at the selected base point. When the instrument is pre-installed, the user can directly use a wrench to adjust the nut on the outside of the end pipe 532. At this time, the distance control frame 535 lifted upward by the compression spring 513 can drive the double The dual-axis motor 534 is lifted upward until the shaft at the top of the dual-axis motor 534 is inserted into the end of the bottom of the stud 524. As the dual-axis motor 534 is started, the driven screw sleeve 516 will cooperate with the two pull rods 515 and the two clamping parts 514 to relax the two clamps 320. The relaxed instrument can obtain the overall load calibration of the self-calibration mechanism 500. At this time, the supported instrument can be quickly calibrated at the base point position under the load state of the self-calibration mechanism 500, thereby avoiding the disadvantages of cumbersome calibration and adjustment of the instrument under traditional operations.

[0038] When the instrument is calibrated and tightened by the two clamps 320, the operator can use a wrench to adjust the nut on the outside of the end tube 532 to rotate counterclockwise until the clamp seat 533 drives the dual-axis motor 534 to descend as a whole, until the transmission shaft at the bottom of the dual-axis motor 534 is inserted into the linkage rod 340, at which time the load-bearing screw 410 installed on the linkage rod 340 by two bolts can be driven, and at the same time, the hydraulic part 210 in operation, its internal hydraulic sub-rod will fall downward, and with the elastic support of the two sets of reset components 240, the support mechanism 300 installed on the suspension 250 can fall downward stably as a whole until it rotates at high speed. The rotating load-bearing screw 410 is drilled into the selected base point on the ground, and then the two bolts in the load-bearing screw 410 are loosened. With the resetting of the hydraulic sub-rod in the hydraulic component 210, the moment the linkage rod 340 is withdrawn from the inside of the load-bearing screw 410, the benchmark 420 will quickly bounce upward under the action of the second spring 430. At this time, the upwardly erected benchmark 420 can provide a benchmark, that is, a marker, for the above-mentioned calibrated instrument, thereby facilitating long-term mapping of various instruments at the same base point. At the same time, the ejected benchmark can also be effectively protected to avoid damage caused by impact with biological or foreign objects, thereby ensuring the comparability and accuracy of subsequent measurement data.

[0039] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A surveying and mapping device for forestry design and planning, comprising a crawler-type climbing vehicle (100) and a level (600), characterized in that: The invention also comprises a suspension mechanism (200) mounted on the crawler-type climbing vehicle (100), a support mechanism (300) mounted on the suspension mechanism (200), a base point positioning assembly (400) mounted on the support mechanism (300), and a self-calibration mechanism (500) mounted in the support mechanism (300); the crawler-type climbing vehicle (100) is used for climbing forested mountainous areas and providing a stable support platform for subsequent instruments; the suspension mechanism (200) comprises a hydraulic component (210) mounted on the crawler-type climbing vehicle (100) and a suspension (250) mounted on a hydraulic sub-rod in the hydraulic component (210); the support mechanism (300) comprises a bottom frame (310) mounted on the suspension (250), a bottom frame (310) movably mounted on the bottom frame ( The base point positioning assembly (400) comprises a load-bearing screw (410) mounted outside the linkage rod (340), a second spring (430) disposed inside the load-bearing screw (410), and a benchmark (420) movably mounted inside the load-bearing screw (410); the self-calibration mechanism (500) comprises a locking assembly (510) mounted between the two clamping plates (320), a driving assembly (530) disposed at the bottom of the locking assembly (510), and a pressure-bearing assembly (520) mounted inside the locking assembly (510); the level (600) is mounted on the pressure-bearing assembly (520) and is used for surveying and mapping the elevation of forested mountainous areas.

2. A surveying and mapping device for forestry design and planning according to claim 1, characterized in that: The suspension mechanism (200) further comprises a crossbeam (220) fixedly mounted on the top of the mother rod of the hydraulic component (210), two first clamps (230) fixedly mounted on the inner ends of the crossbeam (220), two second clamps (260) fixedly mounted on the suspension (250), and a reset assembly (240) movably mounted on the first clamps (230) and the second clamps (260); the reset assembly (240) comprises a telescopic mother rod, a telescopic sub-rod, and a sub-spring arranged in the telescopic mother rod.

3. A surveying and mapping device for forestry design and planning according to claim 1, characterized in that: The support mechanism (300) further comprises a bearing (330) fixedly mounted in a hole inside the bottom frame (310); the linkage rod (340) is mounted inside the bearing (330); a guide rod (360) is mounted outside the clamping plate (320); a limit member (350) and a first spring (370) arranged on the rod body of the guide rod (360) are mounted outside the bottom frame (310).

4. A surveying and mapping device for forestry design and planning according to claim 3, characterized in that: A limiting slideway is provided inside the limiting member (350); the guide rod (360) is composed of a rectangular pad and a T-shaped rod body, and the T-shaped rod body is adapted to penetrate into the inside of the limiting member (350); the bottom of the first spring (370) is pressed against the bottom end of the T-shaped rod body, and the top of the first spring (370) is pressed against the bottom of the limiting member (350).

5. A surveying and mapping device for forestry design and planning according to claim 1, characterized in that: A cross-shaped insertion hole is provided at the top of the linkage rod (340), and a columnar insertion hole adapted to fit the marking rod (420) is provided inside the linkage rod (340).

6. A surveying and mapping device for forestry design and planning according to claim 1, characterized in that: Two screw holes are provided in the end tube at the top of the load-bearing screw (410), and fastening bolts adapted to be pressed against the linkage rod (340) are arranged in the screw holes.

7. A surveying and mapping device for forestry design and planning according to claim 1, characterized in that: The locking assembly (510) comprises a bracket (511) movably mounted between two clamping plates (320), a sling (512) mounted on the bracket (511), a compression spring (513) connected to the sling (512), a pressing piece (514) movably mounted on a rod body of the bracket (511), a pull rod (515) movably connected to the pressing piece (514), and a screw sleeve (516) movably connected to the bottom end of the pull rod (515); The compression spring (513) is composed of two U-shaped clamping pieces and a circular pad; a cross-shaped slot hole is formed at the bottom end of the screw sleeve (516).

8. A surveying and mapping device for forestry design and planning according to claim 1, characterized in that: The pressure-bearing assembly (520) comprises a column (521) installed inside the bracket (511), a latch (522) inserted inside the column (521), two jackets (523) installed at the bottom of the column (521), and a stud (524) movably installed inside the two jackets (523); the stud (524) is adapted to penetrate into the interior of the screw sleeve (516).

9. A surveying and mapping device for forestry design and planning according to claim 1, characterized in that: The driving assembly (530) comprises a chassis (531) mounted outside the compression spring (513), an end tube (532) fixedly mounted on the bottom of the chassis (531), a clamping seat (533) movably mounted inside the end tube (532), a dual-axis motor (534) mounted inside the clamping seat (533), and a distance control frame (535) mounted outside the clamping seat (533).

10. A surveying and mapping device for forestry design and planning according to claim 9, characterized in that: The outside of the end tube (532) is provided with a nut that bears pressure on the distance control frame (535), and the top and bottom transmission shafts of the dual-axis motor (534) are both provided with a cross-shaped plug.

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