Soil sampling equipment for geological survey

Abstract

The invention discloses soil sampling equipment for geological exploration, relates to the field of soil sampling, and solves the problem that the existing soil sampling equipment is difficult to flexibly switch an integral soil sampling state and a local depth soil sampling state. The soil sampling equipment comprises a machine body, a sampling barrel, a driving mechanism, a sampling mechanism and a control mechanism, the driving mechanism comprises a driving motor and a lifting part, the sampling mechanism comprises a control cylinder and a sampling block, and the control mechanism comprises a roller and a control rod. According to the soil sampling equipment for geological exploration, when the driving motor drives the gear column to rotate, the sampling cylinder rotates, and meanwhile, the lifting part is linked to lift the sampling cylinder; soil sampling operation is achieved, the control cylinder is controlled to move upwards by a set distance after a set depth is reached, then drilling continues to enable soil to enter an area between the sampling block and the control cylinder to be collected, and when the sampling cylinder is in a lifting state, the control rod is in linkage to abut against the side face of the rolling wheel, and automatic limiting is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of soil sampling, in particular to soil sampling equipment for geological survey. Background Art

[0002] Geological exploration is a survey and research activity that involves investigating and detecting the geology to determine the appropriate bearing layer, determining the foundation type based on the bearing capacity of the bearing layer, and calculating the foundation parameters. When conducting geological exploration in a certain area, it is necessary to sample and analyze the soil in the area. Soil sampling equipment refers to the tools used to obtain soil samples. Commonly used ones include soil drills, shovels and spades. The soil drill consists of a drill bit and a handle made of hard material.

[0003] Existing soil sampling equipment will drill the drill bit into the soil when in use, and extract the soil inside the drill tube to achieve soil sampling, but this sampling equipment is difficult to switch to the soil of the required soil layer for separate sampling. Directly taking out a large amount of soil will increase the resistance to soil taking and destroy the soil structure. After taking out a large amount of unnecessary soil, it is necessary to screen and backfill the unnecessary soil, which increases the operation steps and reduces the sampling efficiency. To this end, we propose a soil sampling device for geological survey. Summary of the invention

[0004] The object of the present invention is to provide a soil sampling device for geological survey that is easy to flexibly switch between different modes of overall sampling and individual sampling of soil at a specified depth to improve sampling efficiency, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a soil sampling device for geological survey, comprising a body, a sampling tube, a driving mechanism, a sampling mechanism and a control mechanism, the body being fixedly connected with a fixed tube, the fixed tube being fixedly connected with a fixed frame, the driving mechanism comprising a driving motor fixedly mounted on the body, the output end of the driving motor being coaxially fixedly connected with a gear column, the outer wall of the sampling tube being fixedly connected with a first outer gear ring meshing with the gear column, the fixed tube being used for storing hydraulic oil, the body being fixedly connected with a telescopic sleeve rotatably connected with the bottom of the first outer gear ring, the fixed tube being provided with a lifting member for controlling the liquid pressure in the telescopic sleeve when the gear column rotates, so that the sampling tube is lifted and lowered for sampling while the sampling tube rotates, and the lifting member for rotating the sampling tube when the driving motor drives the gear column to rotate. , and at the same time, the lifting member is linked to make the sampling cylinder rise and fall to realize soil sampling operation, the sampling mechanism comprises a control cylinder installed in the sampling cylinder, a mounting rod is arranged in the control cylinder, and a sampling block is arranged on the mounting rod, the bottom of the sampling block is conical, and is used for controlling the control cylinder and the sampling block to fit each other when drilling into the soil, and controlling the control cylinder to move up a set distance after reaching the set depth, and then continuing to drill the hole so that the soil enters the area between the sampling block and the control cylinder for collection, the control mechanism comprises rollers installed on both sides of the machine body, and a control rod is arranged on the machine body, which is used for linking the control rod to contact the side of the roller when the sampling cylinder is in the lifting state, realizing automatic limiting, keeping the machine body in a stable state, facilitating flexible switching between different modes of overall sampling and separate sampling of soil at a specified depth, and improving sampling efficiency.

[0006] Preferably, the sampling mechanism also includes a pushing ring slidably connected to the inner wall of the sampling cylinder, the pushing ring is slidably connected to the outer wall of the control cylinder, the sampling block is fixedly connected to a first threaded rod threadedly connected to the mounting rod, the top of the mounting rod is fixedly connected to a fixing box, the fixing box is rotatably connected to the upper end of the sampling cylinder, a plurality of groups of first connecting rods are fixedly connected to the control cylinder, a plurality of groups of second connecting rods are evenly fixedly connected to the pushing ring, the first connecting rods and the second connecting rods both pass through the fixing box and are slidably connected to the fixing box, the fixing box is provided with a driving member for controlling the control cylinder to be lifted and lowered, so that when drilling into the soil, the control cylinder and the sampling block can be controlled to fit together, and after reaching the set depth, the control cylinder can be controlled to move up a set distance, and then the soil is allowed to enter the area between the sampling block and the control cylinder for collection by continuing to drill.

[0007] Preferably, the driving mechanism also includes a connecting tube fixedly installed in the body, two ends of the connecting tube are respectively connected with the telescopic sleeve and the fixed tube, a lifting plate is slidably connected in the fixed tube, and a second threaded rod that can be synchronously lifted and lowered is rotatably connected to the lifting plate through a rotating buckle, and a fixing ring is fixedly connected to the upper end of the fixed tube, the second threaded rod passes through the fixing ring and is threadedly connected to the fixing ring, and a rotating part for driving the second threaded rod to rotate is provided on the gear column, so that when the driving motor drives the gear column to rotate, the sampling tube is rotated, and the lifting part is linked to make the sampling tube rise and fall, thereby realizing soil sampling operation.

[0008] Preferably, the rotating member includes a driving shaft coaxially fixedly mounted on the gear column, the driving shaft passes through the fixed frame and is rotatably connected to the fixed frame, a driving gear is coaxially fixedly connected to the driving shaft, a second external gear ring meshing with the driving gear is rotatably connected to the fixed frame, a guide groove is provided on the second threaded rod, and a guide block is fixedly connected to the second external gear ring and is slidably connected to the guide groove in a vertical direction, so as to drive the second threaded rod to rotate.

[0009] Preferably, the control mechanism includes two groups of guide tubes fixedly mounted on the body, one end of the guide tube is connected to the connecting tube, a sliding block is connected to the guide tube in a horizontal sliding direction, the side of the control rod is fixedly connected to the sliding block, a mounting frame is fixedly connected to the guide tube, and a tension spring fixedly connected to the sliding block is fixedly connected to the mounting frame, so that when the sampling tube is in a lifting state, the control rod is linked to contact the side of the roller to achieve automatic limiting and keep the body in a stable state.

[0010] Preferably, the sampling mechanism also includes a guide plate fixedly mounted on the upper end of the second connecting rod, and the fixing frame is provided with a limit groove which is slidably connected to the guide plate in a vertical direction. The fixing frame is threadedly connected with a bolt which can be threadedly connected to the side of the guide plate, so as to facilitate switching of the lifting and lowering state of the second connecting rod and realize switching between overall sampling and sampling at a specified depth.

[0011] Preferably, the driving member includes an electric telescopic rod fixedly mounted on the fixing box, the telescopic end of the electric telescopic rod is fixedly connected to a connecting disk, and one end of multiple groups of the first connecting rods are fixedly connected to the connecting disk, so as to facilitate the control of the control cylinder to be lifted and lowered.

[0012] Preferably, a plurality of sets of brake pads are fixedly connected to the side of the control rod to improve the clamping stability of the roller.

[0013] Preferably, a plurality of groups of scale grooves are evenly arranged on the second connecting rod to facilitate observation and control of the insertion depth.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. A soil sampling device for geological survey provided by the present invention solves the problem that the existing soil sampling device for geological survey is difficult to flexibly switch between the overall soil sampling state and the local depth soil sampling state when in use. The machine body is pushed to the soil position where sampling is required, and the driving motor is started to drive the gear column to rotate, so that the first outer gear ring drives the sampling tube to rotate, and at the same time, the gear column drives the driving shaft to rotate, so that the driving gear rotates, thereby driving the second outer gear ring to rotate, and the second outer gear ring drives the guide block so that the guide groove drives the second threaded rod to rotate, and the second threaded rod gradually moves upward during the rotation in the fixed ring, thereby driving the lifting plate at the bottom to move upward, and the lifting plate draws the hydraulic oil in the telescopic sleeve into the fixed cylinder through the connecting pipe, so that the hydraulic pressure in the telescopic sleeve can be reduced, and the sampling cylinder gradually moves downward, and is inserted into the soil as the sampling cylinder rotates, and the soil is input to the position between the sampling cylinder and the control cylinder for collection.

[0016] 2. The present invention provides a soil sampling device for geological survey. When it is necessary to take separate samples at a required depth, by observing the scale of the scale groove, after the bottom end of the sampling tube reaches the set depth, the electric telescopic rod is controlled to push the connecting plate to drive the first connecting rod to move upward, thereby pulling the control tube to move upward a certain distance. At this time, a distance appears between the bottom end of the control tube and the sampling block. As the sampling tube continues to rotate, the soil at this depth can be squeezed and input between the sampling block and the control tube. After the sampling is completed, the electric telescopic rod drives the connecting plate to move downward, so that the soil on the sampling block is collected in the control tube, so as to avoid the soil in other areas entering the sampling block and causing interference during the upward movement. After the sampling is completed, the driving motor is controlled to drive the gear column to rotate in the opposite direction, and the second threaded rod is controlled to rotate and move downward, so as to push the hydraulic oil in the fixed tube into the telescopic sleeve, so that the sampling tube moves upward during the rotation, and the soil at the required position can be taken out through the sampling block.

[0017] 3. The present invention provides a soil sampling device for geological survey. Due to the tension of the tension spring, and the tension of the tension spring is relatively large, only when the lifting plate moves down to the bottom, the hydraulic pressure in the connecting pipe and the guide pipe can push the sliding block, so that the brake pad is away from the roller and the limit is released. At this time, the sampling tube is at the top and the machine body can move freely. When the lifting plate is in the initial state of moving up or moving down from the upper end, the hydraulic pressure in the connecting pipe is lower than the set pressure value, so that the tension spring will not be pulled significantly, the position change of the sliding block and the control rod is small, and the side of the brake pad is in conflict with the roller, which ensures the stability of the roller position when the sampling tube is raised and lowered, and reduces the probability of the machine body position deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the bottom structure of the present invention;

[0020] Figure 3 It is a schematic diagram of the local structure of the sampling mechanism of the present invention;

[0021] Figure 4 for Figure 3 A magnified image of area A;

[0022] Figure 5 It is a schematic diagram of the local structure of the driving mechanism of the present invention;

[0023] Figure 6 for Figure 5 Enlarged view of area B;

[0024] Figure 7 for Figure 5 Enlarged view of area C in the middle;

[0025] Figure 8 It is a schematic diagram of the local structure of the control mechanism of the present invention;

[0026] Fig. 9 It is an exploded view of the local structure of the sampling mechanism of the present invention;

[0027] Fig.10 for Fig. 9 Enlarged view of area D in the middle;

[0028] Fig.11 It is a partial structural cross-sectional view of the sampling mechanism of the present invention;

[0029] Fig.12 for Fig.11 Enlarged view of area E.

[0030] In the figure: 1-body; 2-sampling cylinder; 3-fixing cylinder; 4-fixing frame; 5-driving mechanism; 6-driving motor; 7-gear column; 8-first outer gear ring; 9-telescopic sleeve; 10-lifting member; 11-sampling mechanism; 12-control cylinder; 13-mounting rod; 14-sampling block; 15-control mechanism; 16-roller; 17-control rod; 18-pushing ring; 19-first threaded rod; 20-fixing box; 21-first connecting rod; 22-second connecting rod; 23-driving member; 24-connecting pipe; 25-lifting plate; 26-second threaded rod; 27-fixing ring; 28-rotating member; 29-driving shaft; 30-driving gear; 31-second outer gear ring; 32-guide groove; 33-guide block; 34-guide pipe; 35-sliding block; 36-mounting frame; 37-tension spring; 38-guide plate; 39-limiting groove; 40-bolt; 41-electric telescopic rod; 42-connecting plate; 43-brake pad; 44-scale groove. DETAILED DESCRIPTION

[0031] 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 technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-Figure 12 The present invention provides a technical solution: a soil sampling device for geological survey, comprising a body 1, a sampling tube 2, a driving mechanism 5, a sampling mechanism 11 and a control mechanism 15, wherein a fixed tube 3 is fixedly connected to the body 1, a fixed frame 4 is fixedly connected to the fixed tube 3, the driving mechanism 5 comprises a driving motor 6 fixedly mounted on the body 1, the driving motor 6 model is preferably YYHS-40, the output end of the driving motor 6 is coaxially fixedly connected with a gear column 7, the outer wall of the sampling tube 2 is fixedly connected with a first outer gear ring 8 meshing with the gear column 7, the fixed tube 3 is used to store hydraulic oil, a telescopic sleeve 9 rotatably connected to the bottom of the first outer gear ring 8 is fixedly connected to the body 1, a lifting member 10 is provided in the fixed tube 3 for controlling the liquid pressure in the telescopic sleeve 9 when the gear column 7 rotates, so that the sampling tube 2 is lifted and lowered for sampling while the sampling tube 2 rotates, and the sampling tube 2 is lifted and lowered by the linkage lifting member 10 when the driving motor 6 drives the gear column 7 to rotate, thereby realizing the soil sampling operation.

[0033] The sampling mechanism 11 includes a control cylinder 12 installed in the sampling cylinder 2, a mounting rod 13 is provided in the control cylinder 12, a sampling block 14 is provided on the mounting rod 13, and the bottom of the sampling block 14 is conical, which is used to control the control cylinder 12 and the sampling block 14 to fit each other when drilling into the soil, and control the control cylinder 12 to move up a set distance after reaching the set depth, and then continue to drill the soil so that it enters the area between the sampling block 14 and the control cylinder 12 for collection. The control mechanism 15 includes rollers 16 installed on both sides of the body 1, and a control rod 17 is provided on the body 1, which is used to link the control rod 17 to resist the side of the roller 16 when the sampling cylinder 2 is in a lifting state, so as to realize automatic limit and keep the body 1 in a stable state.

[0034] The sampling mechanism 11 also includes a pushing ring 18 that is slidably connected to the inner wall of the sampling tube 2, and the pushing ring 18 is slidably connected to the outer wall of the control tube 12. A first threaded rod 19 that is threadedly connected to the mounting rod 13 is fixedly connected to the sampling block 14, and a fixing box 20 is fixedly connected to the top of the mounting rod 13. The fixing box 20 is rotatably connected to the upper end of the sampling tube 2. A plurality of groups of first connecting rods 21 are fixedly connected to the control tube 12, and a plurality of groups of second connecting rods 22 are evenly fixedly connected to the pushing ring 18. The first connecting rods 21 and the second connecting rods 22 both penetrate the fixing box 20 and are slidably connected to the fixing box 20. A plurality of groups of scale grooves 44 are evenly arranged on the second connecting rod 22, and a driving member 23 for controlling the lifting and lowering of the control tube 12 is provided on the fixing box 20.

[0035] The driving mechanism 5 also includes a connecting tube 24 fixedly installed in the body 1, and the two ends of the connecting tube 24 are respectively connected to the telescopic sleeve 9 and the fixed cylinder 3. A lifting plate 25 is slidably connected in the fixed cylinder 3. A second threaded rod 26 that can be lifted and lowered synchronously is rotatably connected to the lifting plate 25 through a rotating buckle. A fixing ring 27 is fixedly connected to the upper end of the fixed cylinder 3. The second threaded rod 26 penetrates the fixing ring 27 and is threadedly connected to the fixing ring 27. A rotating member 28 for driving the second threaded rod 26 to rotate is provided on the gear column 7.

[0036] The rotating member 28 includes a driving shaft 29 coaxially fixedly mounted on the gear column 7, the driving shaft 29 passes through the fixed frame 4 and is rotatably connected to the fixed frame 4, a driving gear 30 is coaxially fixedly connected to the driving shaft 29, a second outer gear ring 31 meshing with the driving gear 30 is rotatably connected to the fixed frame 4, a guide groove 32 is formed on the second threaded rod 26, and a guide block 33 is fixedly connected to the second outer gear ring 31 and is slidably connected to the guide groove 32 along the vertical direction.

[0037] The control mechanism 15 includes two groups of guide tubes 34 fixedly mounted on the body 1, one end of the guide tube 34 is connected to the connecting tube 24, a sliding block 35 is connected to the guide tube 34 for sliding in the horizontal direction, the side of the control rod 17 is fixedly connected to the sliding block 35, a mounting frame 36 is fixedly connected to the guide tube 34, a tension spring 37 fixedly connected to the mounting frame 36 and connected to the sliding block 35, and a plurality of brake pads 43 are fixedly connected to the side of the control rod 17.

[0038] The sampling mechanism 11 also includes a guide plate 38 fixedly mounted on the upper end of the second connecting rod 22, a limit groove 39 is provided on the fixed frame 4 and is slidably connected to the guide plate 38 in the vertical direction, a bolt 40 is threadedly connected to the fixed frame 4 and can be threadedly connected to the side of the guide plate 38, the driving member 23 includes an electric telescopic rod 41 fixedly mounted on the fixed box 20, the telescopic end of the electric telescopic rod 41 is fixedly connected to the connecting plate 42, and one end of multiple groups of first connecting rods 21 are fixedly connected to the connecting plate 42.

[0039] In this embodiment, the machine body 1 is pushed to the soil position where sampling is required, and the driving motor 6 is started to drive the gear column 7 to rotate, so that the first outer gear ring 8 drives the sampling tube 2 to rotate, and at the same time, the gear column 7 drives the driving shaft 29 to rotate, so that the driving gear 30 is rotated, thereby driving the second outer gear ring 31 to rotate, and the second outer gear ring 31 drives the guide block 33 so that the guide groove 32 drives the second threaded rod 26 to rotate, and the second threaded rod 26 gradually moves upward during the rotation in the fixed ring 27, thereby driving the bottom lifting plate 25 to move upward, and the lifting plate 25 draws the hydraulic oil in the telescopic sleeve 9 into the fixed cylinder 3 through the connecting pipe 24, so that the hydraulic pressure in the telescopic sleeve 9 can be reduced, and the sampling tube 2 gradually moves downward, and as the sampling tube 2 rotates, it is inserted into the soil, and the soil is input to the position between the sampling tube 2 and the control cylinder 12 for collection. At this time, the bolt 40 is fixed to the guide plate 38, so that during the downward movement of the sampling tube 2, the position of the push ring 18 remains unchanged, and the space in the sampling tube 2 is gradually filled with soil.

[0040] When it is necessary to take separate samples at the required depth, by observing the scale of the scale groove 44, after the bottom end of the sampling tube 2 reaches the set depth, the electric telescopic rod 41 is controlled to push the connecting plate 42 to drive the first connecting rod 21 to move upward, thereby pulling the control tube 12 to move up a certain distance. At this time, a distance appears between the bottom end of the control tube 12 and the sampling block 14. As the sampling tube 2 continues to rotate, the soil at this depth can be squeezed and input between the sampling block 14 and the control tube 12. After the sampling is completed, the electric telescopic rod 41 drives the connecting plate 42 to move downward, so that the soil on the sampling block 14 is collected in the control tube 12, so as to avoid the soil in other areas entering the sampling block 14 and causing interference during the upward movement. If the soil at the required depth is not sampled, the above steps are not required.

[0041] After the sampling is completed, the driving motor 6 is controlled to drive the gear column 7 to rotate in the opposite direction, so that the sampling tube 2 can rotate in the opposite direction. At the same time, the driving gear 30 drives the second outer gear ring 31 to rotate in the opposite direction, and the second threaded rod 26 is controlled to rotate and move downward. The lifting plate 25 pushes the hydraulic oil in the fixed tube 3 into the telescopic sleeve 9, so that the sampling tube 2 moves up during the rotation, and the soil at the required position can be taken out through the sampling block 14. At this time, since the bolt 40 is fixed to the guide plate 38, the position of the pushing ring 18 remains unchanged during the upward movement of the sampling tube 2, and the soil in the sampling tube 2 can be pushed out without the need for subsequent manual backfilling of the soil. After that, the sampling block 14 is rotated to release the threaded connection between the first threaded rod 19 and the mounting rod 13, and the soil sample on the sampling block 14 can be taken out.

[0042] If the entire soil is sampled, the bolts 40 and the guide plate 38 are released when the sampling tube 2 moves upward, so that the internal soil driving ring 18 is moved upward together with the sampling tube 2, and the second connecting rod 22 slides upward in the limit groove 39 until the sampling tube 2 completely leaves the ground, and then the guide plate 38 is pushed downward to output the soil in the sampling tube 2.

[0043] Due to the tension of the tension spring 37, and the tension of the tension spring 37 is relatively large, only when the lifting plate 25 moves down to the bottom, the hydraulic pressure in the connecting pipe 24 and the guide pipe 34 can push the sliding block 35, so that the brake pad 43 is away from the roller 16 and the limit is released. At this time, the sampling tube 2 is at the top and the body 1 can move freely. When the lifting plate 25 is in the initial state of moving up or moving down from the upper end, the hydraulic pressure in the connecting pipe 24 is lower than the set pressure value, so that the tension spring 37 will not be pulled significantly, the position change of the sliding block 35 and the control rod 17 is small, and the side of the brake pad 43 conflicts with the roller 16, which ensures the stability of the position of the roller 16 when the sampling tube 2 is raised and lowered, and reduces the probability of position deviation of the body 1.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0045] Although 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 appended claims and their equivalents.

Claims

1. A soil sampling device for geological exploration, characterized in that: include: A machine body (1) and a sampling cylinder (2), wherein the sampling cylinder (2) passes through the machine body (1) and is movably connected to the machine body (1), a fixing cylinder (3) is fixedly connected to the machine body (1), and a fixing frame (4) is fixedly connected to the fixing cylinder (3); Also includes: A driving mechanism (5), the driving mechanism (5) comprising a driving motor (6) fixedly mounted on the machine body (1), the output end of the driving motor (6) being coaxially fixedly connected to a gear column (7), the outer wall of the sampling tube (2) being fixedly connected to a first outer gear ring (8) meshing with the gear column (7), the fixed tube (3) being used to store hydraulic oil, a telescopic sleeve (9) being fixedly connected to the machine body (1) and rotatably connected to the bottom of the first outer gear ring (8), the fixed tube (3) being provided with a lifting member (10) for controlling the liquid pressure in the telescopic sleeve (9) when the gear column (7) rotates, so that the sampling tube (2) is lifted and lowered for sampling while the gear column (7) rotates, and the lifting member (10) is linked to make the sampling tube (2) lift and lower when the driving motor (6) drives the gear column (7) to rotate, so that the sampling tube (2) is rotated when the driving motor (6) drives the gear column (7) to rotate, and the lifting member (10) is linked to make the sampling tube (2) lift and lower, so as to realize soil sampling operation; A sampling mechanism (11), the sampling mechanism (11) comprising a control cylinder (12) installed in the sampling cylinder (2), a mounting rod (13) being provided in the control cylinder (12), a sampling block (14) being provided on the mounting rod (13), the bottom of the sampling block (14) being conical, and being used for controlling the control cylinder (12) and the sampling block (14) to fit each other when drilling into the soil, and controlling the control cylinder (12) to move up a set distance after reaching a set depth, and then continuing to drill so that the soil enters the area between the sampling block (14) and the control cylinder (12) for collection; A control mechanism (15), the control mechanism (15) comprising rollers (16) mounted on both sides of the machine body (1), the machine body (1) being provided with a control rod (17) for linking the control rod (17) to contact the side of the roller (16) when the sampling tube (2) is in a lifting state, thereby achieving automatic limit and keeping the machine body (1) in a stable state.

2. The soil sampling device for geological survey according to claim 1, characterized in that: The sampling mechanism (11) further comprises a push ring (18) slidably connected to the inner wall of the sampling cylinder (2), the push ring (18) being slidably connected to the outer wall of the control cylinder (12), the sampling block (14) being fixedly connected to a first threaded rod (19) threadedly connected to the mounting rod (13), the top end of the mounting rod (13) being fixedly connected to a fixing box (20), the fixing box (20) being rotatably connected to the upper end of the sampling cylinder (2), the control cylinder (12) being fixedly connected to a plurality of groups of first connecting rods (21), the push ring (18) being evenly fixedly connected to a plurality of groups of second connecting rods (22), the first connecting rods (21) and the second connecting rods (22) both passing through the fixing box (20) and being slidably connected to the fixing box (20), the fixing box (20) being provided with a driving member (23) for controlling the control cylinder (12) to be raised or lowered.

3. The soil sampling device for geological survey according to claim 2, characterized in that: The driving mechanism (5) further comprises a connecting pipe (24) fixedly mounted in the machine body (1), the two ends of the connecting pipe (24) being respectively connected to the telescopic sleeve (9) and the fixed cylinder (3), a lifting plate (25) being slidably connected in the fixed cylinder (3), a second threaded rod (26) capable of synchronous lifting and lowering being rotatably connected to the lifting plate (25) via a rotating buckle, a fixing ring (27) being fixedly connected to the upper end of the fixed cylinder (3), the second threaded rod (26) passing through the fixing ring (27) and being threadedly connected to the fixing ring (27), and a rotating member (28) for driving the second threaded rod (26) to rotate is provided on the gear column (7).

4. The soil sampling device for geological survey according to claim 3, characterized in that: The rotating member (28) comprises a driving shaft (29) coaxially fixedly mounted on the gear column (7), the driving shaft (29) passing through the fixed frame (4) and being rotatably connected to the fixed frame (4), a driving gear (30) being coaxially fixedly connected to the driving shaft (29), a second outer toothed ring (31) meshing with the driving gear (30) being rotatably connected to the fixed frame (4), a guide groove (32) being formed on the second threaded rod (26), and a guide block (33) being slidably connected to the guide groove (32) in a vertical direction being fixedly connected to the second outer toothed ring (31).

5. The soil sampling device for geological survey according to claim 3, characterized in that: The control mechanism (15) comprises two groups of guide tubes (34) fixedly mounted on the machine body (1), one end of the guide tube (34) being connected to the connecting tube (24), a sliding block (35) being connected to the guide tube (34) in a horizontal sliding direction, a side surface of the control rod (17) being fixedly connected to the sliding block (35), a mounting frame (36) being fixedly connected to the guide tube (34), and a tension spring (37) being fixedly connected to the sliding block (35).

6. The soil sampling device for geological survey according to claim 2, characterized in that: The sampling mechanism (11) further comprises a guide plate (38) fixedly mounted on the upper end of the second connecting rod (22); a limit groove (39) is provided on the fixing frame (4) and is slidably connected to the guide plate (38) in a vertical direction; and a bolt (40) is threadedly connected to the fixing frame (4) and is capable of being threadedly connected to the side surface of the guide plate (38).

7. The soil sampling device for geological survey according to claim 2, characterized in that: The driving member (23) comprises an electric telescopic rod (41) fixedly mounted on the fixing box (20), the telescopic end of the electric telescopic rod (41) being fixedly connected to a connecting plate (42), and one end of a plurality of groups of the first connecting rods (21) being fixedly connected to the connecting plate (42).

8. The soil sampling device for geological survey according to claim 1, characterized in that: Multiple groups of brake pads (43) are fixedly connected to the side of the control rod (17).

9. The soil sampling device for geological survey according to claim 2, characterized in that: The second connecting rod (22) is evenly provided with a plurality of groups of scale grooves (44).

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