Soil sampling device with layered collection function for geological engineering

Abstract

The present invention discloses a soil sampling device with a layered collection function for geological engineering, comprising: a positioning base, a protective component installed on the top of which, the protective component comprises a mounting shell, a positioning block and a control rotary block, the mounting shell is fixedly mounted on the top of the positioning base, the positioning block is plugged into the inside of the mounting shell, and the control rotary block is rotatably connected to the top of the positioning block; a sampling component comprises a sampling barrel, a positioning layering rod and a positioning screw, the sampling barrel is plugged into the inside of the positioning base, the rod body of the positioning layering rod is provided with threads on the outside, the positioning layering rod is screwed into the inside of the sampling barrel through the rod body threads, and the positioning screw is plugged into the inside of the sampling barrel; a driving component comprises a driving motor and a driving gear disc. The present invention realizes the rotation and downward movement of the sampling barrel through the sampling component, and the sampling barrel can be automatically moved downward to drill into the soil for sampling without manual downward pressure during sampling, and the positioning layering rod realizes the functions of positioning the drilling depth and layered sampling.

Description

Technical Field

[0001] The invention relates to the technical field of soil sampling devices, and in particular to a soil sampling device with a layered collection function for geological engineering. Background Art

[0002] Geological engineering is the science of studying geological problems and using engineering methods to solve them. At present, in geological exploration work, it is often necessary to select representative soil samples and bring them back to the laboratory for testing and analysis. This requires the use of a sampling device. The sampling device drives the sampling rod to rotate through a motor, and then manually presses down the sampling device to complete the operation of the sampling rod drilling into the soil to take samples.

[0003] However, the current sampling device does not have a protective structure. When encountering a sudden hard obstacle inside, it is easy to break the drilling component at the bottom of the sampling tube, affecting the subsequent sampling and use. In addition, the drilling depth of the sampling rod of the existing sampling device during sampling depends entirely on the experience of the staff, and the drilling depth of the device cannot be accurately controlled. At the same time, when taking out the sample inside the sampling tube, the soil sample at the corresponding position cannot be accurately layered and pushed out. Loose soil or mud is easily mixed together, and it is difficult to distinguish which depth the sample comes from. The flexibility is poor, which affects the accuracy of the survey results. Summary of the invention

[0004] The purpose of the present invention is to provide a soil sampling device with a layered collection function for geological engineering. The sampling tube can be rotated and moved downward by the sampling component. At the same time, the device can realize automatic sampling operation during sampling, that is, the sampling tube can be automatically moved downward to drill into the soil for sampling without manual pressure. At the same time, the protection component can limit the drilling state of the sampling tube. When encountering a harder material, it can be pressurized to drill in first. If the drill bit still cannot drill the harder material after pressurization, the device will automatically trigger the protection state to make the sampling tube idle and will not continue to move downward, thereby protecting the sampling tube from being damaged. The device has high durability. The positioning layering rod realizes the functions of positioning the drilling depth and layered sampling. It is convenient and flexible to use, can adapt to different sampling and surveying needs, and has strong flexibility and adaptability.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a soil sampling device with a stratified collection function for geological engineering, comprising: a positioning base, a protection component is installed on the top of the positioning base, the protection component comprises a mounting shell, a positioning block and a control rotary block, the mounting shell is fixedly mounted on the top of the positioning base, and the positioning block is plugged into the interior of the mounting shell, and the control rotary block is rotatably connected to the top of the positioning block; a sampling component, the sampling component comprises a sampling barrel, a positioning stratification rod and a positioning screw, the sampling barrel is plugged into the interior of the positioning base, the rod body of the positioning stratification rod is provided with threads on the outside, and the positioning stratification rod is screwed into the interior of the sampling barrel through the rod body threads, and the positioning screw is plugged into the interior of the sampling barrel; a driving component, the driving component comprises a driving motor and a driving gear disc, the driving gear disc is rotatably connected to the top of the mounting shell, and the driving motor is fixedly mounted on the top of the positioning base, and the driving motor is transmission-connected to the driving gear disc through gears.

[0006] Optionally, the block body of the positioning block is in a cross shape, and a positioning groove is provided inside the mounting shell, and the positioning block is inserted into the inside of the positioning groove.

[0007] Optionally, the protection component also includes a protection limit block, which is inserted into the interior of the positioning block. The outside of the sampling tube body is provided with a thread, and the side of the block body of the protection limit block is provided with a thread groove. The thread on the outside of the sampling tube rod body is screwed into the thread groove of the protection limit block.

[0008] Optionally, a control rod is provided on the side of the protective limit block, a long track groove is provided inside the positioning block, and an arc-shaped linkage groove is provided inside the block body of the control rotary block, the rod body of the control rod passes through the track groove, and the rod body of the control rod is inserted into the linkage groove.

[0009] Optionally, a protective convex ball is provided on the side of the control rotary block, and a protective limiting groove is provided inside the mounting shell, and the protective convex ball is inserted into the inside of the protective limiting groove.

[0010] Optionally, the protective limiting groove consists of a pressure groove and a protective groove, the groove body shape of the pressure groove is a long strip, and the groove body shape of the protective groove is a spiral.

[0011] Optionally, a protective tension spring is provided at the bottom of the block body of the positioning block, and two ends of the protective tension spring are respectively fixedly connected to the bottom of the positioning block and the inside of the positioning base.

[0012] Optionally, a synchronous groove is provided on the outside of the cylinder body of the sampling cylinder, and a synchronous block is provided on the inside of the driving gear disc, and the synchronous block is inserted into the inside of the synchronous groove.

[0013] Optionally, the rod body of the positioning layered rod is provided with linearly distributed fixing holes, and the rod body of the positioning screw passes through the hole body of the fixing holes. A sample push plate is provided at the bottom of the positioning layered rod, and the sample push plate is inserted into the sampling tube.

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

[0015] 1. When the device of the present invention is in use, the protective component, the sampling component and the driving component cooperate to realize the function of automatic fixed-depth soil drilling sampling. No manual downward pressure device is required to realize the drilling and use of the sampling tube, which greatly reduces the labor intensity during sampling. It is convenient and flexible to use. The protective component can limit and protect the drilling state of the sampling tube, so that when the sampling tube encounters a harder material in the initial stage of downward drilling, the downward pressure will automatically increase to achieve drilling through the harder material. If the harder material cannot be drilled through even when the maximum pressure is applied, the device will automatically trigger the protection state. In the protection state, the sampling tube will only idle and will not continue to drill downward into the soil, thereby protecting the sampling tube from being damaged by the harder material during the sampling process, and greatly improving the durability. The positioning and layering rod of the device has the functions of positioning the drilling depth and layered sampling, thereby ensuring that the device can fix the drilling depth when drilling into the soil for sampling. At the same time, after the drilling is completed, the sample inside the sampling tube can be taken out in layers and completely, the accuracy of the survey result is greatly improved, and the use is flexible and convenient, which improves the flexibility, stability and practicality of the device.

[0016] 2. The driving component of the device of the present invention can drive the sampling component to rotate. At the same time, the sampling component can realize the function of automatically drilling into the soil for sampling by cooperating with the protection component when rotating. When the driving motor rotates, the driving motor drives the driving gear plate to rotate through the gear, so that the driving gear plate can drive the sampling barrel to rotate through the synchronization block when rotating. When the sampling barrel rotates, under the cooperation of the external thread of the sampling barrel rod body and the thread groove of the protection limit block, the sampling barrel can automatically move down to realize the operation of drilling into the soil. It is easy to use and does not require an artificial downward pressure device to realize the drilling operation of the sampling barrel, which greatly reduces the labor intensity of workers and is flexible and convenient to use.

[0017] 3. The protection component of the device of the present invention can limit the sampling tube to a state of use during drilling and sampling, so that the device can achieve stable sampling and will not cause damage to the sampling tube due to encountering harder materials during drilling. When the device is sampling normally, the positioning block is in a reset state under the action of the protection tension spring, and the protection convex ball of the rotary block is controlled to be located at the bottom of the pressure groove, so that the thread groove of the protection limit block can stably fit on the outside of the sampling tube and cooperate with the thread on the outside of the sampling tube to achieve the downward drilling operation. When encountering harder materials in the early stage of sampling, the sampling tube cannot move downward and the sampling tube can be driven by the protection limit block under the obstruction of the harder materials. The positioning block moves upward, thereby lengthening the protective tension spring, increasing the drilling pressure to try to drill through the harder material to complete the remaining sampling operations. If the maximum increased pressure is reached, that is, the protective convex ball is located at the top of the pressure groove, the positioning block continues to move upward and the protective convex ball will enter the interior of the protective groove. The positioning block continues to move upward, which will cause the protective groove to drive the control rotary block to rotate through the protective convex ball. When the control rotary block rotates, the linkage groove can drive the protective limit block to move backward through the control rod to release the cooperation between the thread groove and the external thread of the sampling barrel. At this time, the sampling barrel can only idle under the drive of the driving motor and cannot continue to move downward for drilling and sampling, thereby protecting the sampling barrel from being damaged by the harder material inside the soil, greatly improving the durability and stability of the device.

[0018] 4. In addition, the positioning and stratification rod of the device of the present invention can realize the functions of positioning the drilling depth and accurate stratified sampling. When the positioning and stratification rod is rotated, it can drive the sample push plate to move up and down inside the sampling barrel, thereby determining the drilling depth of the sampling barrel. The positioning and stratification rod is locked by passing the positioning screw through the fixing hole, so that the positioning and stratification rod cannot be rotated at this time, thereby determining the drilling depth of the sampling barrel. When the sampling barrel is drilled to the set depth, the soil inside the sampling barrel hinders the downward movement of the sampling barrel through the sample push plate, so that the sampling barrel will lift the positioning block. After being lifted, the positioning block will rotate idly to protect the sampling barrel from continuing to drill. The drilling depth is accurate and the degree of automation is high. When stratified sampling is required, the positioning screw is removed and the positioning and stratification rod is rotated according to the required stratification standard. When the positioning and stratification rod is rotated, it drives the sample push plate to move, thereby pushing out the sample inside the sampling barrel in order, accurately and completely in layers. It is convenient and flexible to use, easy to adjust, and accurate in sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0020] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0021] In the attached picture:

[0022] Figure 1 A schematic diagram showing a three-dimensional structure of the present invention is shown;

[0023] Figure 2 The schematic diagram of the structure inside the present invention is shown;

[0024] Figure 3 The schematic diagram of the structure of the sampling assembly after disassembly of the present invention is shown;

[0025] Figure 4 A schematic diagram of the structure of the protective assembly of the present invention after disassembly is shown;

[0026] Figure 5 The schematic diagram of the internal structure of the sampling tube of the present invention when drilling into the soil for sampling is shown;

[0027] Figure 6 The schematic diagram shows the initial internal structure of the sampling tube of the present invention when encountering a relatively hard substance during sampling.

[0028] Figure 7 It shows a schematic diagram of the internal structure after the protection function is triggered during sampling of the present invention;

[0029] Figure 8 The present invention is shown Figure 2 The schematic diagram of the structure of the enlarged part A in the middle;

[0030] Fig. 9 The present invention is shown Figure 6 The schematic diagram of the structure of the enlarged part B in the middle;

[0031] Fig.10 The present invention is shown Figure 7 Schematic diagram of the enlarged structure of part C in the middle.

[0032] Description of reference numerals:

[0033] 1. Positioning base; 2. Protection assembly; 201. Mounting shell; 2011. Positioning slot; 2012. Protection limit slot; 2121. Pressure slot; 2122. Protection slot; 202. Positioning block; 2021. Track slot; 2022. Protection tension spring; 203. Control rotary block; 2031. Linkage slot; 2032. Protection convex ball; 204. Protection limit block; 2041. Threaded slot; 2042. Control rod; 3. Sampling assembly; 301. Sampling tube; 3011. Synchronous slot; 302. Positioning layering rod; 3021. Fixing hole; 3022. Sample push plate; 303. Positioning screw; 4. Driving assembly; 401. Driving motor; 402. Driving gear disc; 4021. Synchronous block. DETAILED DESCRIPTION

[0034] In order to make the purpose, scheme and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described in conjunction with the drawings of the specific embodiments of the present invention. Unless otherwise specified, the terms used herein have the usual meanings in the art. The same reference numerals in the drawings represent the same components.

[0035] Embodiment 1:

[0036] like Figures 1 to 10 The soil sampling device with stratified collection function for geological engineering of the present invention comprises: a positioning base 1, a sampling assembly 3 and a driving assembly 4. A protection assembly 2 is installed on the top of the positioning base 1, and the protection assembly 2 comprises a mounting shell 201, a positioning block 202, a control rotary block 203 and a protection limit block 204. The mounting shell 201 is fixedly mounted on the top of the positioning base 1, and the positioning block 202 is plugged into the inside of the mounting shell 201, the control rotary block 203 is rotatably connected to the top of the positioning block 202, and the protection limit block 204 is plugged into the inside of the positioning block 202. The sampling assembly 3 comprises a sampling barrel 301, a positioning stratification rod 302 and a positioning screw 303, the sampling barrel 301 is plugged into the inside of the positioning base 1, the rod body of the positioning stratification rod 302 is provided with a thread on the outside, and the positioning stratification rod 302 is screwed into the inside of the sampling barrel 301 through the rod body thread, and the positioning screw 303 is plugged into the inside of the sampling barrel 301. The driving assembly 4 includes a driving motor 401 and a driving gear disc 402. The driving gear disc 402 is rotatably connected to the top of the mounting housing 201, and the driving motor 401 is fixedly mounted on the top of the positioning base 1. The driving motor 401 is transmission-connected to the driving gear disc 402 via gears.

[0037] Further, such as Figure 4 As shown, the block shape of the positioning block 202 is a cross, and a positioning groove 2011 is provided inside the mounting housing 201, and the positioning block 202 is inserted into the positioning groove 2011. In use, the positioning groove 2011 can limit the moving track of the positioning block 202, and the positioning block 202 will not rotate under the limiting effect of the positioning groove 2011, and is stable in use.

[0038] Further, such as Figure 2As shown, a synchronous groove 3011 is provided on the outside of the cylinder body of the sampling cylinder 301, and a synchronous block 4021 is provided inside the driving toothed disc 402, and the synchronous block 4021 is inserted into the synchronous groove 3011. In use, when the driving motor 401 rotates, the driving motor 401 drives the driving toothed disc 402 to rotate through the gears, so that the driving toothed disc 402 can drive the sampling cylinder 301 to rotate through the synchronous block 4021 when rotating. The outside of the sampling tube 301 is provided with a thread, and the side surface of the block of the protective limit block 204 is provided with a thread groove 2041. The thread on the outside of the rod body of the sampling tube 301 is screwed into the thread groove 2041 of the protective limit block 204. When the sampling tube 301 rotates, under the cooperation of the external thread of the rod body of the sampling tube 301 and the thread groove 2041 of the protective limit block 204, the sampling tube 301 can automatically move down to drill into the soil. It is easy to use and does not require an artificial pressing device to realize the drilling operation of the sampling tube 301, which greatly reduces the labor intensity of workers and is flexible and convenient to use.

[0039] Further, such as Figure 4As shown, a protective convex ball 2032 is provided on the side of the control rotary block 203, and a protective limit groove 2012 is provided inside the mounting shell 201, and the protective convex ball 2032 is inserted into the inside of the protective limit groove 2012, and the protective limit groove 2012 is composed of a pressure groove 2121 and a protective groove 2122, the groove body shape of the pressure groove 2121 is a long strip, and the groove body shape of the protective groove 2122 is a spiral. In use, during normal sampling, the positioning block 202 is in a reset state under the action of the protective tension spring 2022, and the protective convex ball 2032 of the control rotary block 203 is located at the bottom of the pressure groove 2121, so that the thread groove 2041 of the protective limit block 204 can be stably attached to the outside of the sampling tube 301 and realize the downward drilling operation under the action of the thread on the outside of the sampling tube 301. When encountering a harder material in the early stage of sampling, the sampling tube 301 cannot move downward and under the obstruction of the harder material, the sampling tube 301 can drive the positioning block 202 to move upward under the action of the protective limit block 204, thereby lengthening the protective tension spring 2022, increasing the drilling pressure to try to drill through the harder material to complete the remaining sampling operations. If the maximum increased pressure is reached, the protective convex ball 2032 is located at the top of the pressure groove 2121. At this time, the positioning block 202 continues to move upward and the protective convex ball 2032 will enter the interior of the protective groove 2122. When the positioning block 202 continues to move upward, the protection groove 2122 drives the control rotating block 203 to rotate through the protection convex ball 2032. A control rod 2042 is provided on the side of the protection limit block 204. A long track groove 2021 is provided inside the positioning block 202, and an arc-shaped linkage groove 2031 is provided inside the block body of the control rotating block 203. The rod body of the control rod 2042 passes through the track groove 2021, and the rod body of the control rod 2042 is inserted into the linkage groove 2031. When the control rotating block 203 rotates, the linkage groove 2031 can drive the protection limit block 204 to move backward through the control rod 2042 to release the cooperation between the thread groove 2041 and the external thread of the sampling tube 301. At this time, the sampling tube 301 can only idle under the drive of the driving motor 401 and cannot continue to move downward to drill and sample, thereby protecting the sampling tube 301 from being damaged by the harder substances inside the soil, thereby greatly improving the durability and stability of the device.

[0040] Further, such as Figure 4 As shown, a protective tension spring 2022 is provided at the bottom of the block body of the positioning block 202, and the two ends of the protective tension spring 2022 are respectively fixedly connected to the bottom of the positioning block 202 and the inside of the positioning base 1. In use, the protective tension spring 2022 can ensure the stable cooperation between the thread groove 2041 of the protective limit block 204 and the external thread of the sampling tube 301 when the device is sampling normally. At the same time, the protective tension spring 2022 can also drive the device to reset after the sampling tube 301 drills through a harder material to complete the subsequent operation of drilling into the soil for sampling, which is convenient, flexible and stable to use.

[0041] Embodiment 2:

[0042] In a preferred embodiment, Figure 2 As shown, the positioning layered rod 302 has a rod body with linearly distributed fixing holes 3021, and the rod body of the positioning screw 303 passes through the hole body of the fixing hole 3021. The bottom of the positioning layered rod 302 is provided with a sample push plate 3022, and the sample push plate 3022 is inserted into the interior of the sampling tube 301. During use, the positioning and stratification rod 302 can realize the functions of positioning the drilling depth and accurate stratified sampling. When the positioning and stratification rod 302 rotates, it can drive the sample push plate 3022 to move up and down inside the sampling barrel 301, thereby determining the drilling depth of the sampling barrel 301. The positioning screw 303 passes through the fixing hole 3021 to lock the positioning and stratification rod 302, so that the positioning and stratification rod 302 cannot rotate at this time, thereby determining the drilling depth of the sampling barrel 301. When the sampling barrel 301 is drilled to the set depth, the soil inside the sampling barrel 301 hinders the downward movement of the sampling barrel 301 through the sample push plate 3022, so that the sampling barrel 301 will lift the positioning block 202. After being lifted, the positioning block 202 will idle to protect the sampling barrel 301 and will not continue to drill. The drilling depth is accurate and the degree of automation is high. When stratified sampling is required, remove the positioning screw 303 and rotate the positioning stratification rod 302 according to the required stratification standard. When the positioning stratification rod 302 rotates, it drives the sample push plate 3022 to move, so that the sample inside the sampling tube 301 is pushed out in order, accurately and completely in layers. It is convenient and flexible to use and the sampling is accurate.

[0043] Embodiment 3:

[0044] The specific usage and function of the soil sampling device with layered collection function for geological engineering of this embodiment are as follows:

[0045] In the present invention, the device is placed at a suitable sampling position, and the use position of the sample push plate 3022 at the bottom of the positioning layer rod 302 is adjusted in the sampling barrel 301 according to the required sampling depth. When the positioning layer rod 302 rotates, it can drive the sample push plate 3022 to move up and down in the sampling barrel 301, thereby determining the drilling depth of the sampling barrel 301. The positioning layer rod 302 is locked by passing the positioning screw 303 through the fixing hole 3021, so that the positioning layer rod 302 cannot rotate at this time, thereby preventing the positioning layer rod 302 from accidentally rotating during sampling to change the use position of the sample push plate 3022, thereby determining the drilling depth of the sampling barrel 301. After the adjustment is completed, the power of the driving motor 401 is turned on, and the device can start the automatic sampling operation. When the driving motor 401 rotates, the driving motor 401 drives the driving toothed disc 402 to rotate through the gear, so that the driving toothed disc 402 can drive the sampling tube 301 to rotate through the synchronization block 4021 when rotating. When the sampling tube 301 rotates, under the cooperation of the external thread of the rod body of the sampling tube 301 and the thread groove 2041 of the protection limit block 204, the sampling tube 301 can automatically move down to realize the operation of drilling into the soil. It is easy to use and does not require manual pressing device to realize the drilling operation of the sampling tube 301. The device can realize stable sampling. Under the protection of the protection component 2, the device will not cause the sampling tube 301 to be damaged due to encountering harder materials during drilling. When the device is sampling normally, the positioning block 202 is in a reset state under the action of the protective tension spring 2022, and at the same time, the protective convex ball 2032 of the rotary block 203 is controlled to be located at the bottom of the pressure groove 2121, so that the thread groove 2041 of the protective limit block 204 can be stably fitted on the outside of the sampling tube 301 and cooperate with the thread on the outside of the sampling tube 301 to realize the downward drilling operation.

[0046] When encountering a harder material at the beginning of sampling, the sampling tube 301 cannot move downward and under the obstruction of the harder material, the sampling tube 301 can drive the positioning block 202 to move upward under the action of the protection limit block 204, thereby lengthening the protection tension spring 2022, increasing the drilling pressure to try to drill through the harder material to complete the remaining sampling operations. If the maximum increased pressure is reached, the protection convex ball 2032 is located at the top of the pressure groove 2121. At this time, the positioning block 202 continues to move upward and the protection convex ball 2032 enters the interior of the protection groove 2122 , the positioning block 202 continues to move upward, which will cause the protection groove 2122 to drive the control rotary block 203 to rotate through the protection convex ball 2032. When the control rotary block 203 rotates, the linkage groove 2031 can drive the protection limit block 204 to move backward through the control rod 2042 to release the cooperation between the thread groove 2041 and the external thread of the sampling tube 301. At this time, the sampling tube 301 can only idle under the drive of the driving motor 401 and cannot continue to move downward to drill and sample, thereby protecting the sampling tube 301 from being damaged by the harder substances inside the soil.

[0047] If the sampling tube 301 cannot penetrate a harder material, it is necessary to change position and continue sampling. After the sampling is completed, the sampling tube 301 is removed by driving the motor 401 in reverse, the positioning screw 303 is removed, and the positioning stratification rod 302 is rotated according to the required stratification standard. When the positioning stratification rod 302 rotates, it drives the sample push plate 3022 to move, thereby pushing out the sample inside the sampling tube 301 in an orderly, accurate and complete layered manner.

[0048] Finally, it should be noted that when describing the position of each component and the matching relationship between them, the present invention usually takes one / a pair of components as an example. However, those skilled in the art should understand that such position, matching relationship, etc. are also applicable to other components / other pairs of components.

[0049] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

Claims

1. A soil sampling device with a layered collection function for geological engineering, characterized in that: include: A positioning base (1), wherein a protective component (2) is installed on the top of the positioning base (1), wherein the protective component (2) comprises a mounting shell (201), a positioning block (202) and a control rotary block (203), wherein the mounting shell (201) is fixedly mounted on the top of the positioning base (1), and the positioning block (202) is plugged into the inside of the mounting shell (201), and the control rotary block (203) is rotatably connected to the top of the positioning block (202); a sampling component (3), wherein the sampling component (3) comprises a sampling tube ( 301), a positioning layered rod (302) and a positioning screw (303), the sampling barrel (301) is inserted into the interior of the positioning base (1), the rod body of the positioning layered rod (302) is provided with a thread on the outside, and the positioning layered rod (302) is screwed into the interior of the sampling barrel (301) through the rod body thread, and the positioning screw (303) is inserted into the interior of the sampling barrel (301); a driving component (4), the driving component (4) includes a driving motor (401) and a driving gear disc (402), the driving gear disc (402) is rotatably connected to the top of the mounting housing (201), and the driving motor (401) is fixedly mounted on the top of the positioning base (1), and the driving motor (401) is transmission-connected to the driving toothed disc (402) via a gear; the protection assembly (2) also includes a protection stop block (204), the protection stop block (204) is plugged into the interior of the positioning block (202), the outer body of the sampling tube (301) is provided with a thread, and the side surface of the block body of the protection stop block (204) is provided with a thread groove (2041), and the sampling tube (301) is provided with a thread groove (2041). The threads on the outside of the rod body of the cylinder (301) are screwed into the inside of the thread groove (2041) of the protection limit block (204); a control rod (2042) is provided on the side of the protection limit block (204); a long track groove (2021) is provided inside the positioning block (202); and an arc-shaped linkage groove (2031) is provided inside the block body of the control rotary block (203); the rod body of the control rod (2042) passes through the track groove (2021), and the rod body of the control rod (2042) is inserted into the inside of the linkage groove (2031).

2. The soil sampling device with stratified collection function for geological engineering according to claim 1, characterized in that: The block shape of the positioning block (202) is a cross, and a positioning groove (2011) is provided inside the mounting shell (201), and the positioning block (202) is inserted into the inside of the positioning groove (2011).

3. The soil sampling device with stratified collection function for geological engineering according to claim 1, characterized in that: A protective convex ball (2032) is provided on the side of the control rotary block (203), and a protective limiting groove (2012) is provided inside the mounting shell (201), and the protective convex ball (2032) is inserted into the inside of the protective limiting groove (2012).

4. The soil sampling device with stratified collection function for geological engineering as claimed in claim 3, characterized in that: The protective limiting groove (2012) is composed of a pressure groove (2121) and a protective groove (2122); the groove body shape of the pressure groove (2121) is a long strip, and the groove body shape of the protective groove (2122) is a spiral.

5. The soil sampling device with stratified collection function for geological engineering according to claim 1, characterized in that: A protective tension spring (2022) is provided at the bottom of the positioning block (202), and two ends of the protective tension spring (2022) are respectively fixedly connected to the bottom of the positioning block (202) and the inside of the positioning base (1).

6. The soil sampling device with stratified collection function for geological engineering according to claim 1, characterized in that: The sampling cylinder (301) is provided with a synchronization groove (3011) on the outside of the cylinder body, and a synchronization block (4021) is provided inside the driving gear disc (402), and the synchronization block (4021) is inserted into the synchronization groove (3011).

7. The soil sampling device with stratified collection function for geological engineering according to claim 1, characterized in that: The rod body of the positioning layered rod (302) is provided with linearly distributed fixing holes (3021), and the rod body of the positioning screw (303) passes through the hole body of the fixing hole (3021). The bottom of the positioning layered rod (302) is provided with a sample push plate (3022), and the sample push plate (3022) is inserted into the interior of the sampling tube (301).

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