Foldable device for field positioning of sample spots on a forest and grassland wetland survey map

Abstract

The application discloses a kind of forest grass wet wasteland extraction and inspection figure spot field positioning foldable device, it is related to surveying and mapping positioning equipment technical field, including field positioning acquisition terminal, positioning rod, fixed base, fixed rod, foldable support leg, unfolding torsion spring, telescopic mechanism being set on foldable support leg, angle adjusting mechanism being set on fixed base, to be locked plate, elastic locking mechanism being set on positioning rod, by the cooperation of elastic locking mechanism, to be locked plate, fixed rod, foldable support leg and unfolding torsion spring, only single press pressing plate can realize the synchronous automatic unfolding of all foldable support legs, without manually adjusting support leg position, press type length adjustment of cooperation telescopic mechanism, the overall erection of device can be quickly completed, improves tripod erection efficiency.

Description

Technical Field

[0001] This invention relates to the field of surveying and positioning equipment technology, and in particular to a foldable device for field positioning of forest, grassland, wetland and barren land sampling inspection patches. Background Technology

[0002] Field positioning of forest, grassland, wetland, and desertification sampling patches refers to the process in which investigators, carrying positioning equipment, travel to the locations of suspected changed patches identified through remote sensing imagery during forest, grassland, wetland, and desertification surveys. High-precision satellite positioning is used to obtain the actual coordinates of the patch boundaries and verify key information such as land type, area, and stock volume. Currently, traditional tripods are commonly used as support devices for positioning terminals in field operations. These devices often have fixed legs, requiring operators to manually break apart and adjust the length of each leg, resulting in excessively long setup times. This is particularly inconvenient in densely vegetated and rugged terrain areas such as forests and wetlands. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a foldable positioning device for field positioning of forest and grassland wetland sampling inspection patches. It aims to solve the technical problems of the above-mentioned traditional tripods, which are mostly fixed in legs, requiring manual unfolding and length adjustment of each leg, which is time-consuming to set up and particularly inconvenient to operate in complex terrain.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A foldable field positioning device for spot checks of forest and grassland wetland areas includes a field positioning and data acquisition terminal and a positioning rod. The field positioning and data acquisition terminal and the positioning rod are detachably connected by a thread. The device also includes: A fixed base is fixedly mounted on the bottom end face of the positioning rod; Multiple fixing rods are provided, and the multiple fixing rods are evenly fixed in a ring on the fixing base; The system has multiple foldable outriggers, with each foldable outrigger corresponding to a fixed rod. Each foldable outrigger is rotatably mounted on its corresponding fixed rod. Multiple torsion springs are provided, with two torsion springs sleeved on a fixed rod. One end of each torsion spring is fixedly connected to the corresponding foldable support leg, and the other end is fixedly connected to the fixed base. Telescopic mechanism, mounted on foldable outriggers; An angle adjustment mechanism, mounted on a fixed base, is used to adjust the torsion angle of the foldable outriggers; The locking plate is fixedly installed on the side end face of the foldable support leg; An elastic locking mechanism, located on the positioning rod, is used to lock the plate to be locked.

[0005] Preferably, the telescopic mechanism includes: The slide is slidably mounted inside the foldable support leg; The extension leg is fixed at one end to the slide and slidably connected to the foldable leg; Conical foot spikes are fixedly installed at one end of the extension leg; Two elastic positioning components are provided, and the two elastic positioning components are symmetrically fixed on the slide.

[0006] Preferably, the elastic positioning component includes: The skateboard slides within the slide base. A positioning spring is installed inside the slide block, with its two ends abutting against the slide block and the slide plate, respectively. The positioning lever is fixedly mounted on the slide plate.

[0007] Preferably, the foldable legs have positioning holes that are evenly spaced in a linear pattern.

[0008] Preferably, one end of the positioning rod is provided with an arc-shaped outer peripheral surface, which converts the movement of the positioning rod into a force that causes the positioning rod to exit the positioning hole.

[0009] Preferably, the fixed base has a movable cavity.

[0010] Preferably, the angle adjustment mechanism includes: A fixing nut is used to securely mount the base. The lifting screw is mounted on the fixing nut and is threadedly connected to the fixing nut; The rotating wheel is fixedly mounted at one end of the lifting screw. The lifting turntable is fixedly installed at the other end of the lifting screw; Multiple drive arc-shaped grooves are provided, and the multiple drive arc-shaped grooves are evenly arranged in a ring on the lifting turntable; Multiple abutment components are provided, and the multiple abutment components are set on the fixed base.

[0011] Preferably, the abutment component includes: Multiple cross-shaped straight grooves are provided, and the multiple cross-shaped straight grooves are evenly arranged in a ring on the fixed base, and the cross-shaped straight grooves are connected to the movable cavity. A cross-shaped limiting slide block is slidably disposed within a cross-shaped linear groove; One end of the transmission rod is fixedly mounted on the cross-shaped limiting slide block, and the transmission rod slides through the drive arc groove. The abutment plate is fixedly mounted on the cross-shaped limit slide.

[0012] Preferably, the elastic locking mechanism includes: A fixing cover is fitted and fixedly installed on the positioning rod; The lifting seat is slidably mounted on the fixed cover and slidably connected to the positioning rod; The locking spring is located inside the fixed cover, and its two ends abut against the fixed cover and the lifting seat, respectively. The pressure plate is fixedly mounted on the lifting seat and slidably connected to the positioning rod; Multiple locking rods are provided, and they are evenly and uniformly fixed in a ring on the top surface of the pressure plate. They are used to insert into the plate to be locked to lock the foldable outrigger.

[0013] Preferably, a fixing seat is fixedly mounted on the positioning rod, and rubber foot nail storage clips are evenly arranged in a ring on the fixing seat for folding and storing the conical foot nails.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. Through the cooperation of the elastic locking mechanism and the unfolding torsion spring, all foldable legs can be automatically unfolded synchronously with just one press of the pressure plate. There is no need to manually adjust the position of each leg. Combined with the press-type length adjustment of the telescopic mechanism, the overall setup of the device can be completed quickly, improving the efficiency of tripod setup. When storing, simply fold the legs and lock them into the rubber foot clips. The overall storage volume is reduced, and it can be directly put into a regular outdoor backpack, greatly reducing the burden of carrying it in the field.

[0015] 2. The angle adjustment mechanism allows for uniform adjustment of the unfolding angle of all foldable outriggers, adapting to complex field terrains such as slopes, uneven ground, and shrubs at different angles. At the same time, the extension leg of each outrigger can be independently adjusted in length, enabling absolute vertical calibration of the positioning rod on uneven ground. This effectively avoids device offset and shaking during positioning, improving the accuracy of field coordinate data acquisition and meeting the high-precision positioning requirements for spot checks of forest, grassland, wetland, and barren land. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A three-dimensional structural schematic diagram of a foldable device for field positioning of wetland and barren forest sampling sites is shown.

[0018] Figure 2 It shows Figure 1 Mid-side sectional view.

[0019] Figure 3 It shows Figure 2 A magnified view of a portion of point A in the middle.

[0020] Figure 4 It shows Figure 1 A frontal sectional view.

[0021] Figure 5 It shows Figure 4 A magnified view of a section at point B in the middle.

[0022] Figure 6 It shows Figure 1 Rear view sectional view.

[0023] Figure 7 It shows Figure 6 A magnified view of a section at point C.

[0024] Figure 8 It shows Figure 1 A partial three-dimensional structural diagram.

[0025] Legend: 1. Field positioning and data acquisition terminal; 2. Positioning rod; 3. Fixed base; 4. Fixed rod; 5. Foldable support leg; 6. Deployable torsion spring; 7. Locking plate; 8. Slide seat; 9. Extension support leg; 10. Conical foot spike; 11. Slide plate; 12. Positioning spring; 13. Positioning push rod; 14. Positioning hole; 15. Arc-shaped outer circumference; 16. Movable cavity; 17. Fixed nut; 18. Lifting screw; 19. Rotary wheel; 20. Lifting turntable; 21. Drive arc groove; 22. Cross straight groove; 23. Cross limit slide seat; 24. Transmission rod; 25. Abutment plate; 26. Fixed cover; 27. Lifting seat; 28. Locking spring; 29. ​​Pressure plate; 30. Locking rod; 31. Fixed seat; 32. Rubber foot spike storage clip. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0028] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] Reference Figures 1 to 8 The following is a further description of an embodiment of the foldable device for field positioning of wetland and barren forest sampling inspection plots according to the present invention.

[0031] A foldable field positioning device for spot-checking forest and grassland wetland areas includes a field positioning and data acquisition terminal 1 and a positioning rod 2, wherein the field positioning and data acquisition terminal 1 and the positioning rod 2 are detachably connected by a thread, and further includes: Reference Figures 1 to 6 The fixed base 3 is fixedly set on the bottom end face of the positioning rod 2; Multiple fixing rods 4 are provided, and the multiple fixing rods 4 are evenly fixedly arranged in a ring on the fixing base 3; There are multiple foldable support legs 5, and each foldable support leg 5 corresponds to a fixed rod 4. Each foldable support leg 5 is rotatably mounted on the corresponding fixed rod 4. Multiple torsion springs 6 are provided. Every two torsion springs 6 are sleeved on a fixed rod 4. One end of each torsion spring 6 is fixedly connected to the corresponding foldable support leg 5, and the other end is fixedly connected to the fixed base 3. A telescopic mechanism is mounted on the foldable outrigger 5; the telescopic mechanism includes: The slide 8 is slidably disposed within the foldable support leg 5; The extension leg 9 is fixed at one end to the slide 8 and is slidably connected to the foldable leg 5. A tapered foot spike 10 is fixedly installed at one end of the extension leg 9; Two elastic positioning components are provided, and the two elastic positioning components are symmetrically fixed on the slide 8. The elastic positioning components include: The skateboard 11 is slidably mounted inside the slide block 8; The positioning spring 12 is disposed inside the slide 8, and its two ends abut against the slide 8 and the slide plate 11 respectively; The positioning rod 13 is fixedly mounted on the slide plate 11. One end of the positioning rod 13 is provided with an arc-shaped outer peripheral surface 15. The arc-shaped outer peripheral surface 15 converts the movement of the positioning rod 2 into a force that causes the positioning rod 13 to exit the positioning hole 14. The foldable support leg 5 has positioning holes 14 evenly spaced in a linear pattern; During operation, the torsion spring 6 is deployed to release elastic potential energy, driving the foldable outrigger 5 to rotate along the fixed rod 4 until the foldable outrigger 5 contacts the abutment plate 25 and stops. At this time, the multiple foldable outriggers 5, the axis of the positioning rod 2, and the ground form a triangular stable structure. Then, by pressing the positioning rod 13 and driving it to retract into the positioning hole 14, the positioning rod 13 pushes the slide plate 11 to move in the direction of the positioning spring 12, compressing the positioning spring 12 and releasing the limit on the slide block 8. At this time, the conical foot nail 10 can be pulled, and the conical foot nail 10 drives the elastic positioning component to move synchronously to adjust the length of the outrigger. Each extension outrigger 9 operates independently to adapt to different terrain and height requirements. After releasing the positioning rod 13, under the action of the reset elastic force of the positioning spring 12, the positioning rod 13 is re-locked into the corresponding positioning hole 14, realizing the length locking of the extension outrigger 9.

[0032] Reference Figure 2 , Figure 7 and Figure 8 The fixed base 3 has a movable cavity 16 inside; this design allows the movable cavity 16 to provide space for the movement of the angle adjustment mechanism and avoids interference between the components. An angle adjustment mechanism, mounted on the fixed base 3, is used to adjust the torsion angle of the foldable support leg 5. The angle adjustment mechanism includes: The fixing nut 17 is fixedly mounted on the fixing base 3; The lifting screw 18 is mounted on the fixing nut 17 and is threadedly connected to the fixing nut 17; Rotary wheel 19 is fixedly mounted on one end of lifting screw 18; The lifting turntable 20 is fixedly installed at the other end of the lifting screw 18; Multiple drive arc-shaped grooves 21 are provided, and the multiple drive arc-shaped grooves 21 are evenly arranged in a ring on the lifting turntable 20; Multiple abutment components are provided, and the multiple abutment components are disposed on the fixed base 3; The contact components include: Multiple cross-shaped straight grooves 22 are provided, and these grooves are evenly arranged in a ring on the fixed base 3. The cross-shaped straight grooves 22 are connected to the movable cavity 16. This design allows the cross-shaped straight grooves 22 to provide precise radial guidance and circumferential limiting for the cross-shaped limiting slide 23, preventing the cross-shaped limiting slide 23 from deflecting, jamming, or shifting during sliding. This ensures that the moving trajectory of the abutment plate 25 is always consistent with the radial direction of the fixed base 3, improving the smoothness of the angle adjustment process and the accuracy of the abutment limiting. At the same time, the cross-shaped groove structure can withstand greater lateral loads, preventing the abutment component from shifting due to the impact of unfolding the foldable support leg 5, further improving the overall structural reliability of the device.

[0033] The cross-shaped limiting slide block 23 is slidably disposed within the cross-shaped linear groove 22; One end of the transmission rod 24 is fixedly mounted on the cross-shaped limiting slide block 23, and the transmission rod 24 is slidably mounted in the drive arc groove 21. The abutment plate 25 is fixedly mounted on the cross-shaped limiting slide block 23; During operation, the rotating wheel 19 is manually rotated, which drives the lifting screw 18 to rotate. Since the fixing nut 17 is fixed, the lifting screw 18 generates axial displacement, which in turn drives the lifting turntable 20 fixed to its other end to move up and down and rotate. When the lifting turntable 20 rotates, the drive arc groove 21 opened on it changes position relative to the transmission rod 24, driving the transmission rod 24 to slide radially in the cross straight groove 22, thereby driving the cross limit slide 23 and the abutment plate 25 fixed on it to move outward or retract inward. By adjusting the position of the abutment plate 25, the maximum angle of the foldable support leg 5 can be limited, so that the device can adapt to terrain with different slopes and ensure that the positioning rod 2 remains vertically stable in complex field environments.

[0034] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 The locking plate 7 is fixedly installed on the side end face of the foldable support leg 5; An elastic locking mechanism is provided on the positioning rod 2 and is used to lock the plate to be locked 7; The flexible locking mechanism includes: The fixing cover 26 is sleeved and fixedly installed on the positioning rod 2; The lifting seat 27 is slidably mounted on the fixed cover 26 and is slidably connected to the positioning rod 2; The locking spring 28 is located inside the fixed cover 26, and its two ends abut against the fixed cover 26 and the lifting seat 27 respectively. The pressure plate 29 is fixedly mounted on the lifting seat 27 and is slidably connected to the positioning rod 2; Multiple locking rods 30 are provided, and the multiple locking rods 30 are evenly fixed in a ring on the top surface of the pressure plate 29. They are used to insert into the plate to be locked 7 to complete the locking of the foldable support leg 5. A fixing seat 31 is fixedly mounted on the positioning rod 2. The fixing seat 31 has evenly spaced rubber foot clips 32 arranged in a ring for folding and storing the conical foot clips 10. This design ensures that the conical foot clips 10 are fixed and limited in the stored state, preventing their sharp parts from scratching backpacks, clothing, or injuring workers. It also ensures that the foldable legs 5 can stably rest against the outer wall of the positioning rod 2 after folding, effectively reducing the overall storage volume of the device and significantly improving portability for field operations.

[0035] During operation, after manually pressing the pressure plate 29, the pressure plate 29 moves the locking rod 30 out of the locking plate 7, releasing the limiting constraint on the foldable leg 5. At this time, the foldable leg 5 automatically unfolds outward under the action of the unfolding torsion spring 6. When folding and storing the foldable leg 5, rotate the foldable leg 5, and the foldable leg 5 drives the locking plate 7 to rotate synchronously, driving the conical foot nail 10 to be stored in the rubber foot nail storage clip 32. Then, release the pressure plate 29. Under the action of the reset elastic force of the locking spring 28, the lifting seat 27 drives the pressure plate 29 and the locking rod 30 to reset upward, so that the locking rod 30 is re-inserted into the corresponding hole of the locking plate 7, thereby achieving rigid locking of the foldable leg 5 and preventing the foldable leg 5 from being accidentally unfolded during carrying or transportation.

[0036] Working principle: When the device is in the storage state, the foldable support leg 5 is against the positioning rod 2, and the conical foot nail 10 is inserted into the rubber foot nail storage clip 32 of the fixed base 31. The locking rod 30 of the elastic locking mechanism is inserted into the hole of the plate to be locked 7 to lock the support leg. Then, the pressure plate 29 is pressed down. The pressure plate 29 compresses the locking spring 28 through the lifting seat 27 and drives the locking rod 30 to move down synchronously until the locking rod 30 is completely out of the hole of the plate to be locked 7, releasing the rotation constraint on the foldable support leg 5. The unfolding torsion spring 6 sleeved on the fixed rod 4 releases its elastic potential energy, driving the corresponding foldable support leg 5 to rotate outward around the fixed rod 4 until the side wall of the foldable support leg 5 is against the abutment plate. After contact with the ground, the foldable legs 5 stop rotating. At this point, the multiple ring-shaped foldable legs 5, together with the axis of the positioning rod 2 and the ground, form a triangular stable support structure, completing the initial setup of the device. Then, the rotating wheel 19 drives the lifting screw 18 to rotate. Under the threaded transmission of the fixing nut 17, the lifting screw 18 drives the lifting turntable 20 to move up and down axially and rotate synchronously. The driving arc groove 21 on the lifting turntable 20 generates a circumferential displacement relative to the transmission rod 24, driving the transmission rod 24 to slide radially along the cross straight groove 22, thereby driving the cross limit slide 23 and the abutment plate 25 to extend outward or retract inward synchronously. The final position of the abutment plate 25 determines the position of the foldable legs 5. The maximum unfolding angle allows for adaptation to different terrains. Then, pressing the positioning lever 13 causes it to compress the positioning spring 12 via the sliding plate 11 and retract inwards until it completely exits the current positioning hole 14, releasing the limiting constraint on the slide block 8. Pulling the conical foot pin 10 then causes the extension leg 9 and slide block 8 to slide along the inside of the foldable leg 5 to the desired length. Releasing the positioning lever 13 releases the elastic potential energy of the positioning spring 12, pushing the sliding plate 11 and positioning lever 13 outwards to reset, causing the positioning lever 13 to engage with the corresponding positioning hole 14, thus locking the length of the extension leg 9. Finally, the field positioning and data acquisition terminal 1 is threadedly connected to the top of the positioning lever 2. Once the field positioning work for the sampling and inspection of forest, grassland, wetland and barren land can begin, the stable support structure can prevent the device from shaking during the positioning process and ensure the accuracy of coordinate data acquisition. After the work is completed, the field positioning and acquisition terminal 1 is removed first. Press the positioning lever 13 to retract the extension leg 9 into the foldable leg 5 and lock it. Press down the pressure plate 29, and then rotate the foldable leg 5 inward to make it close to the positioning lever 2. Insert the conical foot nail 10 into the rubber foot nail storage clip 32. After releasing the pressure plate 29, the locking spring 28 pushes the locking lever 30 upward to reset and insert it into the hole of the plate to be locked 7, thus locking the foldable leg 5 and realizing the folding and storage of the device for easy carrying and transportation.

[0037] The above description of the embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A foldable field positioning device for spot-checking forest and grassland wetland areas, comprising a field positioning and acquisition terminal (1) and a positioning rod (2), wherein the field positioning and acquisition terminal (1) and the positioning rod (2) are detachably connected by a thread, characterized in that, Also includes: A fixed base (3) is fixedly installed on the bottom end face of the positioning rod (2); Multiple fixing rods (4) are provided, and the multiple fixing rods (4) are uniformly fixed in a ring on the fixing base (3); Multiple foldable legs (5) are provided, and each foldable leg (5) corresponds to a fixed rod (4). Each foldable leg (5) is rotatably mounted on the corresponding fixed rod (4). Multiple unfolding torsion springs (6) are provided. Every two unfolding torsion springs (6) are sleeved on one of the fixed rods (4). One end of each unfolding torsion spring (6) is fixedly connected to the corresponding foldable support leg (5), and the other end is fixedly connected to the fixed base (3). A telescopic mechanism is provided on the foldable support leg (5); An angle adjustment mechanism is provided on the fixed base (3) for adjusting the torsion angle of the foldable support leg (5); The locking plate (7) is fixedly installed on the side end face of the foldable support leg (5); An elastic locking mechanism is provided on the positioning rod (2) for locking the plate (7) to be locked.

2. The foldable device for field positioning of wetland and forestland sampling inspection patches according to claim 1, characterized in that, The telescopic mechanism includes: The slide (8) is slidably disposed within the foldable support leg (5); The extension leg (9) is fixed at one end on the slide (8) and slidably connected to the foldable leg (5); A tapered foot nail (10) is fixedly installed at one end of the extended leg (9); Two elastic positioning components are provided, and the two elastic positioning components are symmetrically fixed on the slide (8).

3. The foldable device for field positioning of wetland and forestland sampling inspection patches according to claim 2, characterized in that, The elastic positioning component includes: The slide plate (11) is slidably disposed within the slide block (8); A positioning spring (12) is disposed inside the slide (8), and its two ends abut against the slide (8) and the slide plate (11) respectively; The positioning lever (13) is fixedly mounted on the slide plate (11).

4. The foldable device for field positioning of wetland and forestland sampling inspection patches according to claim 3, characterized in that, The foldable support leg (5) has positioning holes (14) evenly spaced in a linear pattern.

5. The foldable device for field positioning of forest and grassland wetland sampling inspection patches according to claim 4, characterized in that, One end of the positioning button (13) is provided with an arc-shaped outer peripheral surface (15), which converts the movement of the positioning rod (2) into a force that causes the positioning button (13) to exit the positioning hole (14).

6. The foldable device for field positioning of wetland and barren forest sampling sites according to claim 5, characterized in that, The fixed base (3) has a movable cavity (16) inside.

7. A foldable device for field positioning of wetland and forestland sampling inspection patches according to claim 6, characterized in that, The angle adjustment mechanism includes: A fixing nut (17) is fixedly mounted on the fixing base (3); The lifting screw (18) is mounted on the fixing nut (17) and is threadedly connected to the fixing nut (17); A rotating wheel (19) is fixedly installed at one end of the lifting screw (18); The lifting turntable (20) is fixedly installed at the other end of the lifting screw (18); Multiple drive arc grooves (21) are provided, and the multiple drive arc grooves (21) are evenly arranged in a ring on the lifting turntable (20); Multiple abutment components are provided, and multiple abutment components are disposed on the fixed base (3).

8. The foldable device for field positioning of forest and grassland wetland sampling inspection patches according to claim 7, characterized in that, The abutment component includes: Multiple cross-shaped straight grooves (22) are provided, and the multiple cross-shaped straight grooves (22) are evenly arranged in a ring on the fixed base (3), and the cross-shaped straight grooves (22) are connected to the movable cavity (16); A cross-shaped limiting slide (23) is slidably disposed within the cross-shaped straight groove (22); One end of the transmission rod (24) is fixedly mounted on the cross-shaped limiting slide (23), and the transmission rod (24) is slidably mounted in the drive arc groove (21). The abutment plate (25) is fixedly mounted on the cross-shaped limiting slide (23).

9. A foldable device for field positioning of forest and grassland wetland sampling inspection patches according to claim 8, characterized in that, The elastic locking mechanism includes: A fixing cover (26) is fitted and fixedly installed on the positioning rod (2); The lifting seat (27) is slidably disposed on the fixed cover (26) and slidably connected to the positioning rod (2); A locking spring (28) is disposed inside the fixed cover (26), and its two ends abut against the fixed cover (26) and the lifting seat (27) respectively; The pressure plate (29) is fixedly installed on the lifting seat (27) and is slidably connected to the positioning rod (2); Multiple locking rods (30) are provided, and the multiple locking rods (30) are uniformly fixed in a ring on the top surface of the pressure plate (29) for insertion into the plate to be locked (7) to lock the foldable support leg (5).

10. A foldable device for field positioning of wetland and barren forest sampling sites according to claim 9, characterized in that, A fixing seat (31) is fixedly mounted on the positioning rod (2). Rubber foot nail storage clips (32) are evenly arranged in a ring on the fixing seat (31) for folding and storing the conical foot nails (10).

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