A soil sampling device for geological detection

Abstract

The present application discloses a soil sampling device for geological detection, which relates to the technical field of geological detection, and includes a cylinder, a sampling cavity is provided inside the cylinder, a plurality of connecting columns are evenly spaced on the outer peripheral side of the cylinder, a protective plate is provided on the side of the connecting column away from the cylinder, the protective plate includes a first baffle and a second baffle, the first baffle is connected to the connecting column, the second baffle is symmetrically arranged and respectively hinged on the two opposite sides of the first baffle, a mounting sleeve is provided on the sliding sleeve on the outer peripheral side of the connecting column, the mounting sleeve is provided with a control member, a power sleeve is threadedly connected on the outer peripheral side of the cylinder, the cylinder is provided with a driving member that drives the mounting sleeve to approach the cylinder when the power sleeve is away from the connecting column, the connecting column is provided with a pushing member that drives the mounting sleeve to move away from the cylinder when the power sleeve is close to the connecting column, and a guide portion is provided on the outer peripheral side of the cylinder and near the bottom sampling cavity opening to guide the soil to the side of the protective plate away from the cylinder. The present application can reduce the difficulty of taking the sampler out of the soil.

Description

Technical Field

[0001] The present application relates to the technical field of geological detection, and in particular to a soil sampling device for geological detection. Background Art

[0002] Geological testing is the work of investigating and studying geological conditions such as stratigraphic structure and minerals by using geological exploration methods such as surveying and mapping, geophysical exploration, geochemical prospecting, drilling, pit exploration, sampling testing, and geological remote sensing due to the needs of national defense construction, economic construction, etc.

[0003] At present, when investigating and studying the soil layer structure, soil samplers are often used to sample each layer of soil. The Chinese utility model patent with the announcement number CN2938058Y discloses a soil sampler, the main body of which is a round tube, the lower end of the round tube is a sampling port, the upper end of the round tube is a sample outlet, a handle is provided at the lower part of the sample outlet, the diameter of the sampling port is smaller than the diameter of the round tube, and 6-8 saw-shaped teeth are distributed on the sampling port. When sampling, the round tube is inserted into the ground so that the soil enters the round tube, and then the round tube is pulled out to take out the soil in the tube to obtain the soil of each soil layer.

[0004] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: when the round tube is pulled out, it is restricted by the soil, which produces a large resistance, making it difficult to pull the sampler out of the soil. Summary of the invention

[0005] In order to reduce the difficulty of taking the sampler out of the soil, the present application provides a soil sampling device for geological detection.

[0006] The present application provides a soil sampling device for geological detection, which adopts the following technical solution:

[0007] A soil sampling device for geological detection comprises a cylinder, a sampling cavity is provided inside the cylinder and the bottom is open, a plurality of connecting columns are evenly spaced on the outer peripheral side of the cylinder, a protective plate is provided on the side of the connecting column away from the cylinder, the protective plates cooperate with each other to surround the cylinder, the protective plate comprises a first baffle and a second baffle, the first baffle is connected to the connecting column, the second baffle is symmetrically arranged and respectively hinged on two opposite sides of the first baffle, a mounting sleeve is provided on the outer peripheral side of the connecting column, the mounting sleeve is provided with a control member, when the mounting sleeve slides toward the cylinder, the control member controls the second baffle to flip toward the direction close to the connecting column, when the mounting sleeve slides toward the direction away from the cylinder, the control member controls the second baffle to flip toward the direction away from the connecting column, a power sleeve is threadedly connected to the outer peripheral side of the cylinder, the cylinder is provided with a driving member that drives the mounting sleeve to approach the cylinder when the power sleeve is away from the connecting column, the connecting column is provided with a pushing member that drives the mounting sleeve to move away from the cylinder when the power sleeve is close to the connecting column, and a guiding part that guides soil to the side of the protective plate away from the cylinder is provided on the outer peripheral side of the cylinder and close to the cavity opening of the bottom sampling cavity.

[0008] By adopting the above technical solution, the cylinder is inserted into the ground during sampling so that the soil enters the sampling chamber. When the cylinder needs to be taken out, the power sleeve is rotated first so that the mounting sleeve is close to the cylinder and drives the second baffle to flip toward the connecting column, thereby reducing the contact area with the soil, reducing the difficulty of taking out the cylinder, and facilitating the removal of the cylinder.

[0009] Optionally, the control member is a control column, one end of which is hinged to the mounting sleeve, and the other end of which is hinged to the second baffle.

[0010] By adopting the above technical solution, the control column controls the second baffle to flip when the mounting sleeve slides, and the control column has a simple structure and is easy to use.

[0011] Optionally, the second baffle is slidably connected to a connecting block on one side of the cylinder, the control column is hinged to the connecting block on a side away from the mounting sleeve, and the second baffle is provided with a connecting spring that pushes the connecting block toward the first baffle.

[0012] By adopting the above technical solution, when the control column controls the second baffle to flip, the connecting block slides on the second baffle, which is beneficial to increase the angle at which the second baffle can be flipped.

[0013] Optionally, the driving member is a driving rope, one end of the driving rope is connected to the power sleeve, and the other end of the driving rope is connected to the mounting sleeve, and a guide ring for the driving rope to pass through is provided on the outer peripheral side of the cylinder.

[0014] By adopting the above technical solution, when the power sleeve slides upward, the driving rope pulls the installation sleeve close to the cylinder body, and the driving rope has a simple structure and is easy to use.

[0015] Optionally, the connecting column includes a first column and a second column, the first column is connected to the outer peripheral side of the cylinder, the second column is connected to the first baffle, the first column is provided with a sliding groove for the second column to slide, the outer peripheral side of the second column is provided with a limiting block, the sliding groove is provided with a limiting groove for the limiting block to slide, and the inner peripheral side of the mounting sleeve is provided with a movable groove extending along the axial direction, and the limiting block slides in the movable groove.

[0016] By adopting the above technical solution, when the installation sleeve is close to the cylinder, the limiting block abuts against the groove wall of the movable groove away from the cylinder, so that the installation sleeve drives the first baffle to slide through the limiting block, further reducing the contact area with the soil and facilitating the removal of the cylinder.

[0017] Optionally, a through groove extending toward the cylinder and for sliding the drive rope is defined in the installation sleeve, the installation sleeve is provided with a tension spring, one end of the tension spring is fixed to the through groove hole wall, and the other end is fixed to the drive rope, the through groove hole wall is provided with a receiving hole extending toward the first column, the installation sleeve is provided with a latch that slides in the receiving hole, the first column is provided with a plug-in groove for the latch to be inserted when a limiting block abuts against the movable groove close to the groove wall on one side of the cylinder, a slider located in the through groove is fixed on the outer peripheral side of the drive rope, a sliding surface for sliding the slider is defined on the side of the latch away from the connecting column, when the drive rope slides away from the cylinder, the slider pushes the latch to insert into the plug-in groove, and the installation sleeve is provided with a separation piece for driving the latch to disengage from the latch hole when the slider moves toward the cylinder.

[0018] By adopting the above technical solution, the tension spring is elastically released during use, pulling the drive rope to slide in the direction away from the cylinder body in the penetration groove, driving the slider to slide on the sliding surface, pushing the pin to be inserted into the plug-in groove, thereby realizing the connection and fixation of the installation sleeve and reducing the possibility of sliding of the installation sleeve.

[0019] Optionally, the separation member is a separation block, which is arranged on the side of the pin away from the first column, and the separation block is provided with a separation hole for the driving rope to pass through, and a pushing block is provided on the outer peripheral side of the driving rope and is located on the side of the pin close to the tension spring, and the peripheral wall of the separation hole is inclined to form a pushing surface for the pushing block to slide, and when the pushing block slides on the pushing surface, it pushes the pin to slide out of the plug-in slot.

[0020] By adopting the above technical solution, when the driving rope slides out of the insertion groove toward the cylinder body, the pushing block slides on the pushing surface, driving the latch to disengage from the insertion groove, which is conducive to the installation sleeve entering a sliding state.

[0021] Optionally, the pushing member is a pushing spring, and the pushing spring is sleeved on the outer peripheral side of the connecting column, one end of the pushing spring abuts against the mounting sleeve, and the other end abuts against the cylinder.

[0022] By adopting the above technical solution, the spring is elastically released during use, pushing the installation sleeve to move in a direction away from the cylinder, which is conducive to driving the second baffle to flip away from the connecting column.

[0023] Optionally, the guide part is a guide ring, which is sleeved and fixed on the outer periphery of the cylinder, the protective plate is slidably connected to the top of the guide ring, the outer periphery of the guide ring is inclined with a guide surface, and the radius of the guide ring is smaller than the distance between the outer periphery of the protective plate and the center axis of the cylinder.

[0024] By adopting the above technical solution, when the cylinder is inserted into the ground, the soil slides along the guide surface toward the outer peripheral side of the protective plate, which is helpful to reduce the possibility of soil entering the gap between the protective plate and the cylinder.

[0025] Optionally, a support bar is slidably connected to the top of the guide ring, a support hole connected to the sampling cavity and for the support bar to slide is opened on the outer wall of the cylinder, a linkage block is arranged on the top of the support bar, and a linkage groove for the linkage block to be inserted into is opened at the bottom of the first baffle.

[0026] By adopting the above technical solution, when the first baffle is close to the cylinder, it drives the support bar to slide into the sampling cavity to support the soil, thereby reducing the possibility of the soil escaping from the sampling cavity when the cylinder is taken out.

[0027] In summary, the present application includes at least one of the following beneficial effects:

[0028] 1. When the cylinder is taken out, the installation sleeve is close to the cylinder, driving the second baffle to flip toward the connecting column, reducing the contact area with the soil and reducing the difficulty of taking out the cylinder;

[0029] 2. When the installation sleeve is close to the cylinder, it drives the first baffle plate close to the cylinder, which is beneficial to further reduce the contact area with the soil and facilitate the removal of the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic diagram of the external structure of an embodiment of the present application;

[0031] Figure 2 is an overall cross-sectional schematic diagram of an embodiment of the present application;

[0032] Figure 3 yes Figure 2 A magnified schematic diagram of part A;

[0033] Figure 4 yes Figure 2 A magnified schematic diagram of part B;

[0034] Figure 5 is a schematic diagram of an internal cross-section of an embodiment of the present application;

[0035] Figure 6 yes Figure 5Enlarged schematic diagram of part C of FIG.

[0036] 1. Cylinder; 11. Sampling cavity; 12. Support hole; 2. Connecting column; 21. First column; 211. Plug-in slot; 22. Second column; 221. Sliding slot; 222. Limiting slot; 223. Limiting block; 3. Protective plate; 31. First baffle; 311. Linkage slot; 32. Second baffle; 321. Connecting block; 322. Connecting spring; 4. Mounting sleeve; 41. Drive rope; 411. Sliding block; 412. Pushing block; 42. Guide ring; 421. Moving slot; 43. Wearing slot; 431. Accommodating hole; 44. Tension spring; 45. Latch; 451. Sliding surface; 452. Separation block; 453. Separation hole; 454. Pushing surface; 5. Power sleeve; 6. Control column; 7. Pushing spring; 8. Guide ring; 81. Guide surface; 9. Support bar; 91. Linkage block. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-6 This application is described in further detail.

[0038] The present application discloses a soil sampling device for geological detection. Figure 1 and Figure 2 The soil sampling device for geological detection includes a cylinder body 1 of a sampling cylinder, and a sampling cavity 11 is provided inside the cylinder body 1, and the sampling cavity 11 extends downward to the outside of the cylinder body 1. When sampling, the cylinder body 1 is pressed into the soil, and at this time, each layer of soil enters the sampling cavity 11 through the cavity opening of the sampling cavity 11.

[0039] See also Figure 2 and Figure 3 A plurality of connecting columns 2 are evenly spaced along the circumferential direction at the middle position of the outer peripheral side of the cylinder 1, and a protective plate 3 is arranged on the side of the connecting column 2 away from the cylinder 1. Adjacent protective plates 3 cooperate with each other to surround the cylinder 1 to form a cylindrical structure with the cylinder 1 as the center.

[0040] See also Figure 2 and Figure 4 , a guide portion is provided on the outer circumference of the cylinder 1, and the guide portion is a guide ring 8. The guide ring 8 is fixed on the outer circumference of the cylinder 1 and close to the opening of the sampling chamber 11. The bottom of the protective plate 3 abuts against the top of the guide ring 8, and the diameter of the guide ring 8 is smaller than the distance between the outer circumference of the protective plate 3 and the central axis of the cylinder 1. A guide surface 81 is obliquely provided on the outer circumference of the guide ring 8, and the distance between the guide surface 81 close to the opening of the sampling chamber 11 and the central axis of the cylinder 1 is smaller than the distance between the guide surface 81 away from the opening of the sampling chamber 11 and the central axis of the cylinder 1. When the cylinder 1 is inserted into the ground, the soil slides along the guide surface 81 toward the outer circumference of the protective plate 3, reducing the possibility of soil entering the gap between the protective plate 3 and the cylinder 1.

[0041] See also Figure 1 and Figure 2 The protective plate 3 includes a first baffle 31 and a second baffle 32, and the first baffle 31 and the second baffle 32 are arc-shaped plate structures. The middle position of the first baffle 31 is fixedly connected to the connecting column 2, and the second baffle 32 is symmetrically arranged and respectively located on the opposite sides of the first baffle 31. The first baffle 31 and the second baffle 32 are hingedly connected. In the initial state, the arc-shaped concave sides of the first baffle 31 and the second baffle 32 face the cylinder 1. When in use, the second baffle 32 can be flipped toward or away from the connecting column 2, and a rounded structure is provided on the side of the second baffle 32 away from the first baffle 31, so that the adjacent second baffles 32 slide and contact with each other when flipping.

[0042] See also Figure 5 and Figure 6 , the outer peripheral side of the connecting column 2 is provided with a mounting sleeve 4, and the mounting sleeve 4 is provided with a control member, which is a control column 6, and one end of the control column 6 is hinged to the mounting sleeve 4. The arc-shaped concave side of the second baffle 32 is provided with a mounting groove with a vertical section of a "T"-shaped structure extending circumferentially with the horizontal plane. The second baffle 32 is provided with a connecting block 321 of a "T"-shaped structure, and the connecting block 321 slides in the mounting groove. The end of the control column 6 away from the mounting sleeve 4 is hinged to the connecting block 321. The second baffle 32 is provided with a connecting spring 322, and the connecting spring 322 is installed in the mounting groove. One end of the connecting spring 322 abuts against the side of the connecting block 321 away from the first baffle 31, and the other end abuts against the wall of the mounting groove. In the initial state, the connecting spring 322 is elastically released, pushing the connecting block 321 to slide toward the first baffle 31 until it abuts against the wall of the mounting groove on the side close to the first baffle 31. When the installation sleeve 4 slides toward the cylinder body 1, the control column 6 drives the second baffle plate 32 to flip toward the connecting column 2, which is beneficial to reducing the contact area with the soil.

[0043] See also Figure 1 and Figure 3 The outer circumference of the cylinder 1 is threadedly connected with a power sleeve 5, which is located above the connecting column 2 and close to the top of the first baffle 31. The cylinder 1 is provided with a driving member, and when the power sleeve 5 is away from the connecting column 2, the driving member drives the mounting sleeve 4 to approach the cylinder 1. The driving member is a driving rope 41, and a mounting ring is slidably connected to the bottom of the power sleeve 5. There are multiple driving ropes 41 and they correspond to the mounting sleeves 4 one by one. One end of the driving rope 41 is fixed to the bottom of the mounting ring, and the other end is connected to the mounting sleeve 4. A guide ring 42 corresponding to the driving rope 41 is fixedly connected to the outer circumference of the cylinder 1. When installing, the driving rope 41 slides through the guide ring 42 to guide the driving rope 41 and change the sliding direction of the driving rope 41.

[0044] See also Figure 1 and Figure 3The connecting column 2 is provided with a pusher. When the power sleeve 5 approaches the connecting column 2, the pusher pushes the installation sleeve 4 away from the connecting column 2. The pusher is a push spring 7, and the push spring 7 corresponds to the connecting column 2 one by one. When installed, the push spring 7 is sleeved on the outer peripheral side of the connecting column 2, one end of the push spring 7 abuts against the side of the installation sleeve 4 close to the cylinder 1, and the other end abuts against the outer peripheral side of the cylinder 1. When in use, the push spring 7 is elastically released to push the installation sleeve 4 away from the cylinder 1.

[0045] See also Figure 1 and Figure 3 The connecting column 2 includes a first column 21 and a second column 22. The first column 21 is fixedly connected to the outer peripheral side of the cylinder 1, and the second cylinder 1 is fixedly connected to the first baffle 31. A sliding groove 221 extending toward the cylinder 1 is provided on the side of the first column 21 away from the cylinder 1, and the second column 22 is slidably connected to the sliding groove 221. A limiting block 223 is fixedly connected to the outer peripheral side of the second column 22 and away from the first baffle 31. The groove wall of the sliding groove 221 is connected to a limiting groove 222 that penetrates to the outside of the first column 21. When in use, the limiting block 223 is slidably connected to the limiting groove 222 to limit the second column 22 from escaping from the sliding groove 221. A moving groove 421 extending along the axial direction of the mounting sleeve 4 is provided on the inner peripheral side of the mounting sleeve 4, and the limiting block 223 protrudes from the limiting groove 222 and extends into the moving groove 421. In the initial state, the limiting block 223 abuts against the groove wall of the moving groove 421 close to the cylinder 1, and the limiting block 223 abuts against the groove wall of the limiting groove 222 away from the cylinder 1. When the installation sleeve 4 approaches the cylinder 1, the limiting block 223 slides in the moving groove 421 until the limiting block 223 abuts against the groove wall of the moving groove 421 away from the cylinder 1. The installation sleeve 4 drives the second column 22 to move toward the cylinder 1, which is beneficial to further reduce the contact area with the soil.

[0046] See also Figure 2 and Figure 4 , a support bar 9 is slidably connected to the top of the guide ring 8, and the support bar 9 corresponds to the first baffle 31 one by one. A linkage block 91 is fixedly connected to the top of the support bar 9, and a linkage groove 311 is provided at the bottom of the first baffle 31, and the linkage block 91 is inserted into the linkage groove 311. Support holes 12 corresponding to the support bars 9 are provided on the outer peripheral side of the cylinder 1, and the support bars 9 slide in the support holes 12. When the first baffle 31 is close to the cylinder 1, the first baffle 31 drives the support bar 9 to slide in the support hole 12, so that the support bar 9 is inserted into the soil of the sampling cavity 11, supports the soil in the sampling cavity 11, and increases the difficulty of the soil leaving the sampling cavity 11.

[0047] See also Figure 2 and Figure 3The side wall of the installation sleeve 4 facing the cylinder 1 is provided with a through groove 43 extending along the axis direction of the installation sleeve 4, and the side of the driving rope 41 away from the power sleeve 5 slides in the through groove 43. The installation sleeve 4 is provided with a tension spring 44, which is installed in the through groove 43. One end of the tension spring 44 is fixed to the groove wall of the through groove 43 away from the notch, and the other end is fixedly connected to the driving rope 41. The groove wall of the through groove 43 is provided with a receiving hole 431 extending toward the first column 21 to the outside of the installation sleeve 4. The installation sleeve 4 is provided with a long square columnar structure. The plug 45 is slidably connected to the receiving hole 431. The outer peripheral side of the first column 21 is provided with a plug-in groove 211 for plugging the plug 45, so that the position of the installation sleeve 4 is limited. When the limiting block 223 abuts against the groove wall of the moving groove 421 close to the cylinder 1 and the groove wall of the limiting groove 222 away from the cylinder 1, the plug 45 is aligned with the plug-in groove 211. The outer peripheral side of the driving rope 41 is fixedly connected with a slider 411, and a connecting groove is formed in the peripheral groove wall of the penetration groove 43, and the slider 411 slides in the connecting groove. The latch 45 is inclined to form a sliding surface 451 at a position away from the first column 21 and close to the cylinder 1. When the latch 45 is aligned with the insertion groove 211, the tension spring 44 is elastically released, pulling the driving rope 41 to slide in a direction away from the cylinder 1, so that the slider 411 slides on the sliding surface 451, pushing the latch 45 to be inserted into the insertion groove 211, and realizing the position fixation of the installation sleeve 4.

[0048] See also Figure 2 and Figure 3 The mounting sleeve 4 is provided with a separation member. When the driving rope 41 slides out of the penetration groove 43 toward the cylinder 1, the separation member drives the plug 45 to disengage from the plug-in groove 211. The separation member is a separation block 452. The separation block 452 is fixed to the side of the plug 45 away from the first column 21. The separation block 452 is located at the position of the plug 45 close to the tension spring 44. The separation block 452 is provided with a separation hole 453 with a waist-shaped hole structure. The driving rope 41 is slidably penetrated through the separation hole 453 and the driving rope 41 slides up and down in the separation hole 453. A push block 412 is fixedly connected to the outer peripheral side of the driving rope 41. The push block 412 is located on the side of the separation block 452 close to the tension spring 44. The peripheral side hole wall of the separation hole 453 is inclined to open a push surface 454. When the driving rope 41 slides out of the penetration groove 43 toward the cylinder 1, the push block 412 slides on the push surface 454. At this time, the push block 412 pushes the plug 45 to disengage from the plug-in groove 211.

[0049] The implementation principle of a soil sampling device for geological detection in the embodiment of the present application is as follows:

[0050] When sampling, insert the cylinder 1 into the soil. Before taking it out, rotate the power sleeve 5 so that the driving rope 41 drives the installation sleeve 4 to approach the cylinder 1. At this time, the second baffle 32 flips toward the connecting column 2, and the first baffle 31 approaches the cylinder 1. At this time, the first baffle 31 and the second baffle 32 are separated from the soil, and then the cylinder 1 can be taken out, which helps to reduce the difficulty of taking out the cylinder 1.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A soil sampling device for geological detection, characterized in that: The invention comprises a cylinder (1), wherein a sampling cavity (11) is provided inside the cylinder (1) and the bottom is open, a plurality of connecting columns (2) are evenly spaced on the outer peripheral side of the cylinder (1), a protective plate (3) is provided on the side of the connecting column (2) away from the cylinder (1), the protective plates (3) cooperate with each other to surround the cylinder (1), the protective plate (3) comprises a first baffle (31) and a second baffle (32), the first baffle (31) is connected to the connecting column (2), the second baffle (32) is symmetrically arranged and respectively hinged to two opposite sides of the first baffle (31), the outer peripheral side of the connecting column (2) is provided with a mounting sleeve (4), the mounting sleeve (4) is provided with a control member, and the mounting sleeve (4) faces the cylinder (1). When sliding, the control member controls the second baffle plate (32) to flip in a direction close to the connecting column (2); when the mounting sleeve (4) slides in a direction away from the cylinder (1), the control member controls the second baffle plate (32) to flip in a direction away from the connecting column (2); a power sleeve (5) is threadedly connected to the outer peripheral side of the cylinder (1); the cylinder (1) is provided with a driving member for driving the mounting sleeve (4) to approach the cylinder (1) when the power sleeve (5) is away from the connecting column (2); the connecting column (2) is provided with a pushing member for driving the mounting sleeve (4) to move away from the cylinder (1) when the power sleeve (5) is close to the connecting column (2); and a guiding portion for guiding soil toward the side of the protective plate (3) away from the cylinder (1) is provided on the outer peripheral side of the cylinder (1) and near the cavity opening of the bottom sampling cavity (11); The control member is a control column (6), one end of the control column (6) is hinged to the mounting sleeve (4), and the other end is hinged to the second baffle (32); The driving member is a driving rope (41), one end of the driving rope (41) is connected to the power sleeve (5), and the other end of the driving rope (41) is connected to the mounting sleeve (4), and a guide ring (42) for the driving rope (41) to pass through is provided on the outer peripheral side of the cylinder (1); The connecting column (2) comprises a first column (21) and a second column (22), the first column (21) being connected to the outer peripheral side of the cylinder (1), the second column (22) being connected to the first baffle (31), the first column (21) being provided with a sliding groove (221) for the second column (22) to slide, the outer peripheral side of the second column (22) being provided with a limiting block (223), the sliding groove (221) being provided with a limiting groove (222) for the limiting block (223) to slide, the inner peripheral side of the mounting sleeve (4) being provided with a moving groove (421) extending in the axial direction, the limiting block (223) sliding in the moving groove (421); The installation sleeve (4) is provided with a through groove (43) extending toward the cylinder (1) and for the driving rope (41) to slide. The installation sleeve (4) is provided with a tension spring (44). One end of the tension spring (44) is fixed to the hole wall of the through groove (43), and the other end is fixed to the driving rope (41). The hole wall of the through groove (43) is provided with a receiving hole (431) extending toward the first column (21). The installation sleeve (4) is provided with a latch (45) sliding in the receiving hole (431). The first column (21) is provided with a limiting block (223) abutting against the movable groove (421) close to the cylinder. (1) a slot wall on one side for inserting a plug pin (45), a slider (411) located in a penetration slot (43) is fixed on the outer peripheral side of the driving rope (41), a sliding surface (451) for sliding the slider (411) is provided on the side of the plug pin (45) away from the connecting column (2), when the driving rope (41) slides away from the cylinder (1), the slider (411) pushes the plug pin (45) to insert into the slot (211), and the mounting sleeve (4) is provided with a separation piece for driving the plug pin (45) to disengage from the plug pin (45) hole when the slider (411) moves toward the cylinder (1).

2. A soil sampling device for geological detection according to claim 1, characterized in that: The second baffle (32) is slidably connected to a connecting block (321) on a side facing the cylinder (1); the control column (6) is hingedly connected to the connecting block (321) on a side away from the mounting sleeve (4); and the second baffle (32) is provided with a connecting spring (322) for pushing the connecting block (321) towards the first baffle (31).

3. A soil sampling device for geological detection according to claim 1, characterized in that: The separation member is a separation block (452), which is arranged on a side of the latch (45) away from the first column (21), and the separation block (452) is provided with a separation hole (453) for the driving rope (41) to pass through, and a push block (412) is arranged on the outer peripheral side of the driving rope (41) and is located on a side of the latch (45) close to the tension spring (44), and a push surface (454) for the push block (412) to slide is inclinedly provided on the peripheral hole wall of the separation hole (453), and when the push block (412) slides on the push surface (454), it pushes the latch (45) to slide out of the plug slot (211).

4. A soil sampling device for geological detection according to claim 1, characterized in that: The pushing member is a pushing spring (7), which is sleeved on the outer peripheral side of the connecting column (2), one end of the pushing spring (7) abuts against the mounting sleeve (4), and the other end abuts against the cylinder (1).

5. A soil sampling device for geological detection according to claim 1, characterized in that: The guide portion is a guide ring (8), the guide ring (8) is sleeved and fixed on the outer peripheral side of the cylinder (1), the protection plate (3) is slidably connected to the top of the guide ring (8), the outer peripheral side of the guide ring (8) is inclined with a guide surface (81), and the radius of the guide ring (8) is smaller than the distance between the outer peripheral side of the protection plate (3) and the central axis of the cylinder (1).

6. A soil sampling device for geological detection according to claim 5, characterized in that: The top of the guide ring (8) is slidably connected to a support bar (9); the outer wall of the cylinder (1) is provided with a support hole (12) which is connected to the sampling cavity (11) and for the support bar (9) to slide; a linkage block (91) is provided on the top of the support bar (9); and the bottom of the first baffle (31) is provided with a linkage groove (311) for the linkage block (91) to be inserted into.

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