Geological survey equipment and survey method

Abstract

The invention relates to the technical field of geological exploration, in particular to geological exploration equipment and an exploration method, and the geological exploration equipment comprises a fixed foot stool which is provided with a positioning plate. According to the geological exploration equipment and method, a semicircular cylinder is pushed to rotate by 180 degrees to penetrate through a through groove to be attached to the other side of a positioning plate, in the process, a protruding block is extruded when penetrating through the through groove, a clamping block is pushed to deflect, locking of a semicircular blade is relieved, the semicircular blade is driven by a torsional spring to rotate upwards to be transversely cut on the inner side of the semicircular cylinder, and the semicircular blade is fixed to the inner side of the semicircular cylinder. Compared with the bottom sealing of an existing fixing structure, when the sampling barrel is inserted into the soil, the semicircular blade can be combined with the semicircular cylinder to form a same-position structure, so that the insertion resistance is reduced, and the sampling barrel can be conveniently taken out. And then the semicircular blade is switched to an ectopic structure through rotation to complete sampling, so that the soil cannot be extruded to increase the working intensity, and the stable taking-out of the sample can be ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of geological exploration, in particular to geological exploration equipment and an exploration method. Background Art

[0002] Geological exploration factors include geological structure or geological construction: landform, hydrogeological conditions, physical and mechanical properties of soil and rock, natural geological phenomena and natural building materials, etc. These are usually called engineering geological conditions. After the engineering geological conditions are identified, it is necessary to sample the surface soil during geological surveys and mineral explorations based on the structure and operation characteristics of the designed building.

[0003] Geological exploration must be based on geological observation and research. According to the task requirements and the principle of obtaining more and better geological results in a shorter time and with less workload, necessary technical means or methods should be selected. For example, for peat or soft soil sampling, most of the time, a drill sampler is used manually, which is inserted into peat or soft soil for sampling. For individual depth sampling, the drill sampler is subject to soil resistance when pressed down, and the drill sampler is prone to tilt and deviation, making it impossible to ensure that the drill sampler is inserted vertically, which in turn leads to inaccurate sampling points of the drill sampler.

[0004] The existing patent (publication number: CN115962975A) discloses a sampling device for geological survey samples, including a partition body, the partition body includes a partition plate, the partition plate is provided with a first sampling hole, the outer surface of the partition plate is provided with a first groove plate connected to the first sampling hole port, and a sampling part, the sampling part includes a sampling plate, and the sampling plate is located on one side of the partition plate. The above-mentioned existing sampling device needs to be manually leveled before installation, the operation is not convenient, and when the positioning plate is offset during the insertion of the positioning plate into the ground, it is difficult for the operator to immediately know.

[0005] In view of this, we propose a geological survey equipment and survey method. Summary of the invention

[0006] The purpose of the present invention is to provide a geological survey equipment and survey method to solve the problems mentioned in the above background technology that the existing sampling equipment needs to be manually leveled before installation, the operation is not convenient, and it is difficult for the operator to immediately know when the positioning plate is offset during the insertion of the positioning plate into the ground. To achieve the above purpose, the present invention provides the following technical solutions: A geological survey equipment includes a fixed tripod, a positioning plate is provided on the fixed tripod, and a sampling tube is movably provided on the positioning plate.

[0007] The fixed tripod is provided with an automatic positioner matched with the positioning plate.

[0008] The automatic positioner comprises a hoop fixedly connected to the top of the fixed tripod, and a ball seat is rotatably connected inside the hoop, and a weight-reducing plane is cut on the top of the ball seat.

[0009] The inner ring of the hoop is provided with a ring groove, and a clamp is arranged in the ring groove, the side surface of the hoop is provided with a through opening connected to the ring groove, the two ends of the clamp extend from the through opening to the outside, and the two ends of the clamp are threadedly connected with adjustment bolts.

[0010] A slot for inserting the positioning plate is provided on the weight-reducing plane, and the slot runs through the bottom of the ball seat.

[0011] The top of the positioning plate is fixedly connected with a horizontal seat, and a turntable is rotatably connected on the weight-reducing plane. The inner ring of the turntable is fixedly provided with a buckle matched with the horizontal seat.

[0012] The sampling cylinder is composed of a cylinder seat and a semi-cylinder which are fixedly connected, and a socket matched with the sampling cylinder is opened on the surface of the horizontal seat.

[0013] The positioning plate and the semi-cylinder are provided with soil cutting components.

[0014] Preferably, the soil-cutting assembly includes a through groove opened on the side surface of the positioning plate and cooperating with the semi-cylinder, and a notch is opened at the bottom of the semi-cylinder, a semi-circular blade adapted to the semi-cylinder is arranged in the notch, and a rotating shaft is fixedly arranged on both sides of the notch, the semi-circular blade is rotatably connected along the rotating shaft, and a torsion spring is arranged on the rotating shaft, and the torsion spring pushes the semi-circular blade to rotate upward.

[0015] The inner top wall of the notch is provided with a cutout, and the cutout is movably provided with a clamping block for limiting the rotation of the semicircular blade, a spring is provided between the clamping block and the cutout, and the clamping block is connected to the inner top wall of the cutout through the spring.

[0016] A convex block matched with the through slot is fixedly arranged on one side of the surface of the clamping block away from the positioning plate, and a transverse slot for the clamping block to deflect is opened on the side wall of the through slot.

[0017] Preferably, two reinforcing edges are fixedly provided on the side surface of the positioning plate, and the slot is provided with edge grooves adapted to the reinforcing edges.

[0018] The ball seat, the rib groove and the reinforcing rib are provided with an insertion monitoring component.

[0019] Preferably, the insertion monitoring component includes an inner groove opened inside the ball seat, and the inner grooves are symmetrically arranged in groups of two along the rib groove. A hook is rotatably connected inside the inner groove, and a slot matching the hook is opened on the reinforcing rib.

[0020] Preferably, a handle is fixedly provided on the top of the sampling cylinder.

[0021] Preferably, the hoop consists of two symmetrical half hoops, and the two half hoops are fixed by bolts.

[0022] Preferably, a rubber film covering the spring is provided between the block and the cutout.

[0023] A survey method of geological survey equipment comprises the following steps:

[0024] S1. Use the fixed tripod to fix it on the ground, then rotate the adjusting bolt to control the hoop to enter the ring groove and release the lock on the ball seat. At this time, the ball seat uses the plumb structure formed by the bottom weight and deflects along the ring hoop until the weight-reducing plane faces directly upward. Finally, use the hoop to lock the ball seat. Therefore, when working on an inclined ground, the ball seat is not affected by the fixed tripod and can automatically adjust its own angle to ensure that the slot is arranged vertically along the horizontal plane.

[0025] S2. After the positioning plate is inserted into the ground along the slot, the turntable is rotated to move the buckle to the top of the horizontal seat to lock the positioning plate;

[0026] S3, insert the sampling tube into the ground along the socket with the help of the positioning plate. At this time, the semi-cylinder fits on one side of the positioning plate, and then pushes the semi-cylinder to rotate 180 degrees so that it passes through the through slot and fits on the other side of the positioning plate. During this process, the protrusion is squeezed when passing through the through slot, and pushes the block to deflect, thereby releasing the lock of the semi-circular blade, so that the semi-circular blade is driven by the torsion spring to turn up and cross-cut the inner side of the semi-cylinder, thereby cutting off the soil sample and sealing the bottom of the semi-cylinder. At this time, the sampling tube can be pulled out along the positioning plate to take out the sample;

[0027] S4. During the vertical insertion of the positioning plate with the assistance of the ball seat, when the ball seat shifts due to vibration or loose soil, the hook inside the ball seat that is kept hanging downward by its own weight will shift accordingly and move from the inner groove into the ridge groove and engage with the card slot to lock the downwardly moved positioning plate.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] In the present invention, the ball seat utilizes a plumb structure formed by the weight of the bottom, and deflects along the hoop until the weight-reducing plane faces directly upward, and finally the ball seat is locked by the clamp. Therefore, when working on an inclined ground, the ball seat is not affected by the fixed tripod, and can automatically adjust its own angle to ensure the vertical arrangement of the slot along the horizontal plane. Compared with the existing method of manually leveling the ground, the ball seat can utilize the weight-reducing plane cut off from the top to make its bottom relatively heavier, and complete the automatic positioning of the insertion angle through the plumb effect, without the need for excessive human intervention and assistance, making the equipment easy to operate.

[0030] In the present invention, the semi-cylinder is pushed to rotate 180° so that it passes through the through slot and fits on the other side of the positioning plate. During this process, the protrusion is squeezed when passing through the through slot and pushes the block to deflect, thereby releasing the lock on the semi-circular blade, so that the semi-circular blade is driven by the torsion spring to rotate upward and cut across the inner side of the semi-cylinder, thereby cutting off the soil sample and sealing the bottom of the semi-cylinder. At this time, the sampling tube can be pulled out along the positioning plate to take out the sample. Compared with the existing fixed structure of the bottom seal, the above-mentioned semi-circular blade can be combined with the semi-cylinder to form a co-location structure when the sampling tube is inserted into the soil to reduce the insertion resistance, and then the semi-circular blade is switched to the ectopic structure by rotation to complete the sampling, which will not squeeze the soil to increase the working intensity and can ensure the stable removal of the sample.

[0031] In the present invention, when the ball seat is displaced due to vibration or loose soil, the hook inside the ball seat that is kept hanging downward by its own weight follows the displacement and moves from the inner groove into the ridge groove and engages with the card groove to lock the downward-moving positioning plate. Compared with the existing direct-insert positioning plate, the hook inside the ball seat can monitor the angle of the ball seat and automatically lock the positioning plate when it is not inserted vertically into the soil, so that it will not be inserted into the soil along an inclined trajectory, thereby avoiding the subsequent sampling tube from following the inclined insertion and affecting the sampling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0033] Figure 2 It is a schematic diagram of the structure of the fixed tripod and the hoop of the present invention;

[0034] Figure 3 It is a structural schematic diagram of the ball seat, the positioning plate and the rotating disk of the present invention;

[0035] Figure 4 It is a schematic diagram of the three-dimensional structure of the ball seat of the present invention;

[0036] Figure 5 It is a three-dimensional structural cross-sectional view of the ball seat of the present invention;

[0037] Figure 6 It is an exploded view of the positioning plate, the horizontal seat and the sampling tube of the present invention;

[0038] Figure 7 It is a partial schematic diagram of the positioning plate and the semi-cylinder of the present invention;

[0039] Figure 8 The explosion of the semi-circular cylinder and the semi-circular blade of the present invention Figure 1 ;

[0040] Fig. 9 The explosion of the semi-circular cylinder and the semi-circular blade of the present invention Figure 2 .

[0041] In the figure: 1, fixed tripod; 2, positioning plate; 3, sampling cylinder; 31, cylinder seat; 32, semi-cylinder; 4, automatic positioner; 41, hoop; 42, ball seat; 43, weight-reducing plane; 44, ring groove; 45, hoop; 46, through port; 47, adjusting bolt; 48, slot; 49, horizontal seat; 410, turntable; 411, buckle; 412, socket; 413, soil cutting assembly; 4131, through slot ; 4132, notch; 4133, semicircular blade; 4134, rotating shaft; 4135, torsion spring; 4136, incision; 4137, block; 4138, spring; 4139, protrusion; 41310, transverse groove; 41311, reinforcing rib; 41312, rib groove; 41313, insert monitoring component; 413131, inner groove; 413132, hook; 413133, card slot. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 technical staff in this field without creative work are within the scope of protection of the present invention.

[0043] See also Figures 1 to 9 The present invention provides a technical solution: a geological survey equipment, comprising a fixed tripod 1, a positioning plate 2 is arranged on the fixed tripod 1, and a sampling tube 3 is movably arranged on the positioning plate 2.

[0044] The fixed tripod 1 is provided with an automatic positioner 4 matched with the positioning plate 2, and the whole equipment is fixed on the ground by means of the fixed tripod 1.

[0045] The automatic positioner 4 comprises a hoop 41 fixedly connected to the top of the fixed tripod 1 , and a ball seat 42 is rotatably connected inside the hoop 41 , and a weight-reducing plane 43 is cut on the top of the ball seat 42 .

[0046] The inner ring of the hoop 41 is provided with an annular groove 44, and a clamp 45 is arranged in the annular groove 44. The side surface of the hoop 41 is provided with a through hole 46 connected to the annular groove 44. The two ends of the clamp 45 extend from the through hole 46 to the outside, and the two ends of the clamp 45 are threadedly connected with adjusting bolts 47. The adjusting bolts 47 are rotated to control the clamp 45 to enter the annular groove 44, so as to release the lock of the ball seat 42. At this time, the ball seat 42 uses the plumb structure formed by the bottom weight and deflects along the hoop 41 until the weight-reducing plane 43 faces directly upwards. Tightening the clamp 45 locks the ball seat 42.

[0047] The weight-reducing plane 43 is provided with a slot 48 for the positioning plate 2 to be inserted into, and the slot 48 passes through the bottom of the ball seat 42 .

[0048] The top of the positioning plate 2 is fixedly connected to a cross seat 49, and a turntable 410 is rotatably connected to the weight-reducing plane 43. The inner ring of the turntable 410 is fixedly provided with a buckle 411 that cooperates with the cross seat 49. After the positioning plate 2 is inserted into the ground along the slot 48, the turntable 410 is rotated to move the buckle 411 to the top of the cross seat 49 to lock the positioning plate 2.

[0049] The sampling cylinder 3 is composed of a cylinder seat 31 and a semi-cylinder 32 fixedly connected. The surface of the horizontal seat 49 is provided with a socket 412 matched with the sampling cylinder 3. The sampling cylinder 3 can be inserted into the ground along the socket 412 with the assistance of the positioning plate 2.

[0050] The positioning plate 2 and the semi-cylinder 32 are provided with a soil cutting assembly 413 .

[0051] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 9 As shown, the soil-cutting assembly 413 includes a through groove 4131 opened on the side surface of the positioning plate 2 and matched with the semi-cylinder 32, and a notch 4132 is opened at the bottom of the semi-cylinder 32, a semi-circular blade 4133 adapted to the semi-cylinder 32 is arranged in the notch 4132, and a rotating shaft 4134 is fixedly arranged on both sides of the notch 4132, the semi-circular blade 4133 is rotatably connected along the rotating shaft 4134, and a torsion spring 4135 is arranged on the rotating shaft 4134, and the torsion spring 4135 pushes the semi-circular blade 4133 to rotate upward.

[0052] The inner top wall of the notch 4132 is provided with a cutout 4136, and the cutout 4136 is movably provided with a block 4137 for limiting the rotation of the semicircular blade 4133. A spring 4138 is provided between the block 4137 and the cutout 4136, and the block 4137 is connected to the inner top wall of the cutout 4136 through the spring 4138. The block 4137 clamps the semicircular blade 4133 on the upper side. When the block 4137 is deflected, the semicircular blade 4133 cannot be clamped, but is pushed away by it. The semicircular blade 4133 is driven by the torsion spring 4135 to rotate upward and cut across the inner side of the semicircular cylinder 32, so as to cut off the soil sample and seal the bottom of the semicircular cylinder 32. At this time, the sampling tube 3 can be pulled out along the positioning plate 2 to take out the sample.

[0053] A protrusion 4139 cooperating with the through slot 4131 is fixedly provided on the side of the surface of the block 4137 facing away from the positioning plate 2, and a transverse slot 41310 for the deflection of the block 4137 is opened on the side wall of the through slot 4131. The semi-cylinder 32 is attached to one side of the positioning plate 2, and then the semi-cylinder 32 is pushed to rotate 180°, so that it can pass through the through slot 4131 and attach to the other side of the positioning plate 2. During this process, the protrusion 4139 is squeezed when passing through the through slot 4131, and pushes the block 4137 to deflect, thereby releasing the lock on the semi-circular blade 4133.

[0054] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 9 As shown, two reinforcing edges 41311 are fixedly provided on the side surface of the positioning plate 2 , and an edge groove 41312 adapted to the reinforcing edges 41311 is opened on the slot 48 .

[0055] An insertion monitoring component 41313 is disposed on the ball seat 42 , the rib groove 41312 and the reinforcing rib 41311 .

[0056] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 9 As shown, the insertion monitoring component 41313 includes an inner groove 413131 opened inside the ball seat 42, and the inner grooves 413131 are symmetrically arranged in groups of two along the rib groove 41312, and the inner groove 413131 is rotatably connected with a hook 413132, and the reinforcing rib 41311 is provided with a slot 413133 that cooperates with the hook 413132. When the ball seat 42 shifts, the hook 413132 inside it that is kept hanging downward by its own weight follows the displacement, and moves from the inner groove 413131 into the rib groove 41312 and engages with the slot 413133 to lock the downwardly moved positioning plate 2.

[0057] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 9 As shown, a handle is fixedly provided at the top of the sampling tube 3. When sampling, the operator uses the handle to push the sampling tube 3 to rotate along the socket 412.

[0058] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 9As shown, the hoop 41 is composed of two symmetrical half hoops, and the two half hoops are fixed by bolts. After loosening the bolts, the two half hoops can be separated, and the ball seat 42 in the hoop 41 can be removed for maintenance.

[0059] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 9 As shown, a rubber film covering the spring 4138 is provided between the block 4137 and the cutout 4136 , and the deflection of the block 4137 by the spring 4138 is not affected by the rubber film, and the rubber film can prevent external soil from interfering with the operation of the block 4137 .

[0060] A survey method of geological survey equipment comprises the following steps:

[0061] S1. Fix the fixed tripod 1 on the ground, then rotate the adjusting bolt 47 to control the clamp 45 to enter the annular groove 44, and release the lock on the ball seat 42. At this time, the ball seat 42 uses the plumb structure formed by the bottom weight and deflects along the annular hoop 41 until the weight-reducing plane 43 faces directly upward. Finally, the ball seat 42 can be locked with the clamp 45. Therefore, when working on an inclined ground, the ball seat 42 is not affected by the fixed tripod 1 and can automatically adjust its own angle to ensure that the slot 48 is arranged vertically along the horizontal plane.

[0062] S2. After the positioning plate 2 is inserted into the ground along the slot 48, the turntable 410 is rotated to move the buckle 411 to the top of the horizontal seat 49 to lock the positioning plate 2.

[0063] S3. Insert the sampling tube 3 into the ground along the socket 412 with the assistance of the positioning plate 2. At this time, the semi-cylinder 32 is attached to one side of the positioning plate 2. Then, the semi-cylinder 32 is pushed to rotate 180° so that it passes through the through slot 4131 and is attached to the other side of the positioning plate 2. During this process, the protrusion 4139 is squeezed when passing through the through slot 4131, and pushes the block 4137 to deflect, thereby releasing the lock on the semi-circular blade 4133, so that the semi-circular blade 4133 is driven by the torsion spring 4135 to rotate upward and cut across the inner side of the semi-cylinder 32, thereby cutting off the soil sample and sealing the bottom of the semi-cylinder 32. At this time, the sampling tube 3 can be pulled out along the positioning plate 2 to take out the sample.

[0064] S4. During the vertical insertion of the positioning plate 2 with the assistance of the ball seat 42, when the ball seat 42 is displaced due to vibration or loose soil, the hook 413132 inside the ball seat 42, which is kept hanging downward by its own weight, follows the displacement and moves from the inner groove 413131 into the ridge groove 41312 and engages with the slot 413133 to lock the downwardly moved positioning plate 2.

[0065] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A geological survey equipment, comprising a fixed tripod (1), characterized in that: The fixed tripod (1) is provided with a positioning plate (2), and a sampling tube (3) is movably provided on the positioning plate (2); The fixed tripod (1) is provided with an automatic positioner (4) which matches with the positioning plate (2); The automatic positioner (4) comprises a hoop (41) fixedly connected to the top of the fixed tripod (1), and a ball seat (42) is rotatably connected inside the hoop (41), and a weight-reducing plane (43) is cut on the top of the ball seat (42); The inner ring of the hoop (41) is provided with a ring groove (44), and a hoop (45) is arranged in the ring groove (44); the side surface of the hoop (41) is provided with a through opening (46) communicating with the ring groove (44); two ends of the hoop (45) extend from the through opening (46) to the outside, and the two ends of the hoop (45) are threadedly connected with adjusting bolts (47); The weight-reducing plane (43) is provided with a slot (48) for inserting the positioning plate (2), and the slot (48) passes through the bottom of the ball seat (42); The top of the positioning plate (2) is fixedly connected with a horizontal seat (49), and a rotating disk (410) is rotatably connected on the weight-reducing plane (43), and a buckle (411) matching with the horizontal seat (49) is fixedly provided on the inner ring of the rotating disk (410); The sampling cylinder (3) is composed of a cylinder seat (31) and a semi-cylinder (32) fixedly connected, and a socket (412) matching with the sampling cylinder (3) is provided on the surface of the horizontal seat (49); A soil cutting assembly (413) is provided on the positioning plate (2) and the semi-cylinder (32).

2. A geological survey equipment according to claim 1, characterized in that: The soil cutting assembly (413) comprises a through groove (4131) provided on the side surface of the positioning plate (2) and matched with the semi-cylinder (32), and a notch (4132) is provided at the bottom of the semi-cylinder (32), a semi-circular blade (4133) adapted to the semi-cylinder (32) is arranged in the notch (4132), and a rotating shaft (4134) is fixedly arranged on both sides of the notch (4132), the semi-circular blade (4133) is rotatably connected along the rotating shaft (4134), and a torsion spring (4135) is arranged on the rotating shaft (4134), and the torsion spring (4135) pushes the semi-circular blade (4133) to rotate upward; The inner top wall of the notch (4132) is provided with a cutout (4136), and the cutout (4136) is movably provided with a block (4137) for limiting the rotation of the semicircular blade (4133), a spring (4138) is provided between the block (4137) and the cutout (4136), and the block (4137) is connected to the inner top wall of the cutout (4136) via the spring (4138); A protrusion (4139) matching the through slot (4131) is fixedly provided on the side of the surface of the clamping block (4137) facing away from the positioning plate (2), and a transverse groove (41310) for the clamping block (4137) to deflect is provided on the side wall of the through slot (4131).

3. A geological survey equipment according to claim 2, characterized in that: Two reinforcing edges (41311) are fixedly provided on the side surface of the positioning plate (2), and an edge groove (41312) adapted to the reinforcing edges (41311) is provided on the slot (48); An insertion monitoring component (41313) is provided on the ball seat (42), the rib groove (41312) and the reinforcing rib (41311).

4. A geological survey equipment according to claim 3, characterized in that: The insertion monitoring component (41313) includes an inner groove (413131) opened inside the ball seat (42), and the inner grooves (413131) are symmetrically arranged in groups of two along the rib groove (41312), and the inner part of the inner groove (413131) is rotatably connected with a hook (413132), and the reinforcing rib (41311) is provided with a slot (413133) that matches the hook (413132).

5. A geological survey equipment according to claim 1, characterized in that: A handle is fixedly provided on the top end of the sampling cylinder (3).

6. A geological survey equipment according to claim 2, characterized in that: The hoop (41) is composed of two symmetrical half hoops, and the two half hoops are fixed by bolts.

7. A geological survey equipment according to claim 2, characterized in that: An adhesive film covering the spring (4138) is provided between the block (4137) and the cutout (4136).

8. The survey method of a geological survey equipment according to claim 4, comprising the following steps: S1. Fix the fixed tripod (1) on the ground, then rotate the adjusting bolt (47) to control the hoop (45) to enter the annular groove (44), and release the lock on the ball seat (42). At this time, the ball seat (42) uses the plumb structure formed by the bottom weight and deflects along the annular hoop (41) until the weight-reducing plane (43) faces directly upward, and finally uses the hoop (45) to lock the ball seat (42). Therefore, when working on an inclined ground, the ball seat (42) is not affected by the fixed tripod (1) and can automatically adjust its own angle to ensure that the slot (48) is arranged vertically along the horizontal plane; S2. After the positioning plate (2) is inserted into the ground along the slot (48), the turntable (410) is rotated to move the buckle (411) to the top of the horizontal seat (49) to lock the positioning plate (2); S3, insert the sampling tube (3) into the ground along the socket (412) and with the assistance of the positioning plate (2), at which time the semi-cylinder (32) is attached to one side of the positioning plate (2), and then the semi-cylinder (32) is pushed to rotate 180 degrees so that it passes through the through slot (4131) and is attached to the other side of the positioning plate (2). During this process, the protrusion (4139) is squeezed when passing through the through slot (4131), and pushes the block (4137) to deflect, thereby releasing the lock on the semi-circular blade (4133), so that the semi-circular blade (4133) is driven by the torsion spring (4135) to rotate upward and cut across the inner side of the semi-cylinder (32), thereby cutting off the soil sample and sealing the bottom of the semi-cylinder (32). At this time, the sampling tube (3) can be pulled out along the positioning plate (2) to take out the sample; S4. When the positioning plate (2) is vertically inserted with the aid of the ball seat (42), if the ball seat (42) is displaced due to vibration or loose soil, the hook (413132) inside the ball seat that is held downward by its own weight will be displaced accordingly and will move from the inner groove (413131) into the ridge groove (41312) to engage with the clamping groove (413133) to lock the positioning plate (2) that has moved downward.

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