A soil layer sampling device for geological exploration

Abstract

The invention relates to the technical field of geological exploration equipment, and specifically to a geological exploration soil layer sampling device. The invention comprises a mounting platform, a hydraulic cylinder is fixedly mounted on the top surface of the mounting platform, and a sampling mechanism is mounted on the telescopic end of the hydraulic cylinder, wherein the sampling mechanism comprises a mounting tube; a sampling assembly is fixedly mounted in the mounting tube, and the sampling assembly comprises a hexagonal prism fixedly mounted in the mounting tube, and guide assemblies are fixedly mounted on the six sides of the hexagonal prism, and a driving assembly is mounted on the guiding assembly; the driving assembly is transmission-connected with a sampling tube assembly; a cover tube is fixedly connected to the top of the mounting tube, and an operating mechanism is arranged between the top of the cover tube and the telescopic end of the hydraulic cylinder; the operating mechanism in the invention cooperates with six groups of driving assemblies and sampling tube assemblies to realize sampling work at multiple depth positions in a single lowering process; the sampling tube assembly can obtain a soil column smaller in size than the square tube in a square tube during sampling, that is, there is no extrusion contact between the soil column and the inner wall of the square tube.

Description

Technical Field

[0001] The invention relates to the technical field of geological exploration equipment, in particular to a geological exploration soil layer sampling device. Background Art

[0002] Geological exploration refers to the process of investigating and studying geological conditions to obtain information about geological structures, geological lithology, groundwater, underground minerals, etc. In geological exploration, soil sampling of soil layers is a very important task. Through soil sampling and analysis, soil properties (including soil particle composition, density, water content, texture, etc. This information can help engineers determine the soil's physical properties such as bearing capacity and permeability, and provide a reference for engineering design), soil pollution (through soil sampling and analysis, it is possible to detect whether there are harmful substances in the soil, such as heavy metals, organic matter, etc., so as to assess the degree of soil pollution and provide a basis for environmental protection and soil remediation) and groundwater level (through soil sampling, the situation of aquifers in the soil, including groundwater level, water quality, etc.) can be obtained, which is of great significance for the development and utilization of groundwater resources and groundwater protection.

[0003] At present, when sampling shallow soil layers, sampling is generally carried out by sampling shovels, sampling spades, etc. When sampling deeper soil layers, generally a drilling operation is first performed at a designated position by a drilling device to form a sampling hole, and then a sampling device is placed in the sampling hole to achieve sampling of the deeper soil layer; the sampling device generally includes a lifting mechanism, and a sampling tube is installed at the output end of the lifting mechanism. The lifting mechanism drives the sampling tube into the sampling hole. After the front end of the sampling tube contacts the bottom of the sampling hole, as the sampling tube continues to be pressed down, the soil at this position will enter the sampling tube, and then the lifting mechanism is used to move the sampling tube out of the sampling hole, thereby completing the soil sampling work.

[0004] However, the current sampling device still has the following shortcomings when used:

[0005] First, in the actual soil sampling process, it is often necessary to sample the soil at different depths, so as to fully understand the nature and pollution of the soil layer, and provide necessary information and basis for soil utilization, environmental protection and engineering design; and the existing sampling device can only complete the sampling operation at one depth during a single lowering sampling, so it is necessary to repeat the drilling and lowering sampling operations many times to complete the sampling of soil at different depths, which makes the whole sampling process more cumbersome, reduces the sampling efficiency, and increases the work intensity.

[0006] Second, the stickiness between the soil in the sampling tube and the tube wall makes it inconvenient to remove the soil in the tube; the soil may be tightly attached to the tube wall and difficult to remove; this will affect the accuracy and efficiency of sampling. After the soil is removed, the sampling tube wall will adhere to the soil, and the residual soil may be mixed into the new soil sample during the next sampling, resulting in contamination and inaccuracy of the sampling results. Summary of the invention

[0007] The purpose of the present invention is to provide a soil layer sampling device for geological exploration to solve the problems raised in the above-mentioned background technology.

[0008] The purpose of the present invention can be achieved by the following technical solutions:

[0009] A soil layer sampling device for geological exploration comprises a mounting platform, the bottom surface of the mounting platform is fixedly connected with pillars at positions near the four corners thereof, a moving assembly is fixedly installed at the bottom end of the pillar, a hydraulic cylinder is vertically fixedly installed at the center position of the top surface of the mounting platform, and the telescopic end of the hydraulic cylinder slides through the mounting platform to the bottom of the mounting platform; the moving assembly comprises a bottom plate fixedly installed at the bottom end of the pillar, a universal wheel is fixedly installed on the bottom surface of the bottom plate, and a positioning cone is threadedly installed on the top surface of the bottom plate;

[0010] The telescopic end of the hydraulic cylinder is fixedly connected with a sampling mechanism, and the sampling mechanism includes a mounting tube arranged directly below the hydraulic cylinder, a static pressure drill bit is detachably fixedly installed at the bottom end of the mounting tube, six through holes 1 are arranged in an array about the axis of the mounting tube on the periphery of the mounting tube, a through hole 2 is arranged on the inner end surface of the through hole 1 and is connected to the inside of the mounting tube, and six slide grooves 1 are arranged on the inner wall of the mounting tube and are respectively located directly above the six through holes 2;

[0011] A sampling assembly is fixedly installed in the installation cylinder, and the sampling assembly includes a hexagonal prism fixedly installed at the center of the bottom surface of the installation cylinder, and guide assemblies are fixedly installed on the six sides of the hexagonal prism, and a driving assembly is slidably installed on the guide assembly, and the end of the driving assembly away from the hexagonal prism is slidably installed in the slide groove 1 at the corresponding position;

[0012] The driving assembly is drivingly connected to a group of sampling tube assemblies, and one end of the sampling tube assembly away from the driving assembly is located in the through hole 1 and the through hole 2 at corresponding positions when no sampling action is performed;

[0013] The top of the installation tube is fixedly connected to a cover tube coaxial with the installation tube, an operating mechanism is arranged between the top of the cover tube and the telescopic end of the hydraulic cylinder, and six marking scales used in conjunction with the operating mechanism are arranged on the top surface of the cover tube, and the six marking scales are respectively aligned with six groups of sampling tube assemblies;

[0014] The operating end of the operating mechanism slides through the top of the cover tube and slides through the top of the installation tube to the inside of the installation tube. The operating mechanism is used to selectively control a group of driving components in the installation tube to drive a corresponding group of sampling tube components to perform soil sampling.

[0015] Furthermore, the guide assembly includes two fixed seats one fixedly installed on the side surfaces of the hexagonal prism, a guide rod is fixedly connected between the two fixed seats one, a slider is slidably installed on the periphery of the guide rod, and a spring one is fixedly connected between the slider and the upper fixed seat one and is sleeved on the periphery of the guide rod.

[0016] Further, the driving assembly includes a driving block, the driving block is arranged between the guide rod and the inner wall of the mounting cylinder, the driving block is fixedly connected to the slider at the middle position of one side close to the slider, a protrusion is fixedly installed on the top surface of the driving block at the end away from the hexagonal prism, the protrusion is slidably installed in a slide groove at a corresponding position at the end away from the driving block, the side of the driving block away from the hexagonal prism is an inclined surface, both sides of the inclined surface are fixedly installed with side plates, and the side surfaces of the side plates are provided with driving grooves;

[0017] A connection assembly is slidably mounted between the two side plates, and the sampling tube assembly is rotatably mounted on one end of the connection assembly away from the columnar mounting seat;

[0018] An L-shaped clamping piece used in conjunction with the operating mechanism is fixedly mounted on the top surface of the driving block.

[0019] Furthermore, the connecting assembly includes a mounting plate, which is coaxially arranged with the through hole at the corresponding position, and a transmission block is fixedly installed on the periphery of the mounting plate, and the transmission block extends from one end of the mounting plate to between the two side plates, and both sides of the transmission block are rotatably installed with a rotating shaft at one end located between the two side plates, and the two ends of the rotating shafts away from the transmission block are respectively slidably clamped in the driving grooves of the two side plates.

[0020] Further, the sampling tube assembly includes a cylindrical mounting seat coaxially arranged with the mounting plate, one end of the cylindrical mounting seat is rotatably connected to the side of the mounting plate, the other end of the cylindrical mounting seat is located in the corresponding position of the through hole 2 when the sampling action is not performed, and the periphery of the cylindrical mounting seat is in rotatable sliding contact with the inner wall of the through hole 2;

[0021] A square tube is slidably inserted into one end of the columnar mounting seat away from the mounting plate, and a conical block is slidably mounted on one end of the square tube away from the columnar mounting seat. A countersunk hole is provided on the periphery of the columnar mounting seat at a position away from the mounting plate, and a screw is installed in the countersunk hole to penetrate the thread of the columnar mounting seat, and the screw is used to limit the sliding movement between the square tube and the columnar mounting seat;

[0022] A sealing assembly for controlling the opening and closing of the square tube is installed in the square tube at a position close to the conical block. The sealing assembly is transmission-connected to the conical block. The sliding movement between the conical block and the square tube is used to control the opening and closing of the sealing assembly. When the sampling tube assembly is not performing a sampling action, the conical block is located in the through hole 1 at the corresponding position, and the outer edge of the conical block is in rotatable sliding contact with the inner wall of the through hole 1.

[0023] Stoppers are fixedly mounted on the four side surfaces of the square tube at the middle position of one end close to the conical block.

[0024] Further, the sealing cover assembly includes four groups of baffle assemblies respectively fixedly mounted on the four inner sides of the square tube, the baffle assembly includes two fixing seats 2 fixedly mounted on the inner side of the square tube near the two sides, a mounting shaft is rotatably mounted between the two fixing seats 2, a baffle is fixedly connected to the periphery of the mounting shaft, the baffle is an isosceles triangle structure, and in a closed state, the baffles in the four groups of baffle assemblies jointly form a partition that blocks the square tube;

[0025] An installation groove is provided on the outer side surface of the baffle, and two limiting sliding grooves are provided on both sides of the installation groove.

[0026] Furthermore, a sampling hole is provided in the conical block along its axial direction, and a square slide groove is provided on the end surface of the conical block close to the square tube to centrally surround the sampling hole, and the square slide groove is a square structure used in conjunction with the square tube, and a limiting slide groove three arranged parallel to the axis of the conical block is provided in the middle position of the four outer walls of the square slide groove, and the end of the square tube close to the conical block is slidably installed in the square slide groove, and the ends of the four stoppers away from the square tube are respectively slidably clamped in the four limiting slide grooves three, and a spring two is fixedly connected between the stopper and the end of the limiting slide groove three away from the square tube;

[0027] Four transmission assemblies are fixedly installed on the end surface of the conical block close to the square tube. The four transmission assemblies are located between the sampling holes and the square slide grooves. The ends of the four transmission assemblies away from the conical block are respectively connected to the four baffle assemblies.

[0028] Further, the transmission assembly includes a connecting rod three fixedly connected to the conical block, and a shaft sleeve is fixedly installed at one end of the connecting rod three away from the conical block, and the shaft sleeve is located in the installation groove of the corresponding baffle, and a rotatable roller shaft is installed through the shaft sleeve, and the two ends of the roller shaft are respectively slidably clamped in the two limiting sliding grooves on both sides of the installation groove;

[0029] When the sampling action is not performed, the roller shaft is located at one end of the mounting slot close to the mounting shaft, and the connecting rod three and the baffle are in a vertical state.

[0030] Furthermore, the operating mechanism includes a connecting plate fixedly mounted on the telescopic end of the hydraulic cylinder, a plurality of connecting rods 1 are fixedly connected to the bottom surface of the connecting plate, the bottom ends of the plurality of connecting rods 1 are commonly fixedly connected to a mounting plate located directly below the connecting plate, a plurality of connecting rods 2 are fixedly connected to the bottom surface of the mounting plate, and the ends of the plurality of connecting rods 2 away from the mounting plate are all fixedly connected to the top position of the outer periphery of the cover cylinder;

[0031] An electric telescopic rod is fixedly installed at the center position of the top surface of the mounting plate, the telescopic end of the electric telescopic rod slides through the mounting plate to between the mounting plate and the cover tube, the telescopic end of the electric telescopic rod is fixedly connected to an operating shaft coaxial with the cover tube, the bottom end of the operating shaft sequentially slides through the top end of the cover tube and the top end of the mounting tube to the inside of the mounting tube, and the bottom end of the operating shaft is fixedly connected to a driving rod, and the end of the driving rod away from the operating shaft is fixedly installed with a clamping rod used in conjunction with the L-shaped clamping piece;

[0032] The outer periphery of the operating shaft is provided with two symmetrically distributed limiting sliding grooves 1 near the top, the outer peripheral sliding sleeve of the operating shaft is provided with a circular ring located between the electric telescopic rod and the cover tube, the bottom surface of the circular ring is connected to the top of the cover tube in a damping rotation manner, and two protrusions 2 are fixedly installed on the inner wall of the circular ring, and the ends of the two protrusions 2 away from the inner wall of the circular ring are respectively slidably clamped in the two limiting sliding grooves 1;

[0033] A handle is fixedly connected to the periphery of the ring, and the handle is located just above the driving rod.

[0034] Furthermore, the sampling tube assembly is also provided with a rotation drive structure, which includes a spiral slide groove provided on the periphery of the cylindrical mounting seat and a mounting block fixedly mounted on the inner wall of the mounting cylinder, and the mounting block is located below the cylindrical mounting seat;

[0035] A support rod is vertically fixedly installed on the top surface of the mounting block, and a ball slidably clamped in the spiral sliding groove is fixedly installed on the top end of the support rod.

[0036] Beneficial effects of the present invention:

[0037] 1. The operating mechanism of the present invention cooperates with the arrangement of six drive assemblies and sampling tube assemblies in the sampling assembly to complete the sampling work at multiple depth positions in a single lowering process; it solves the problem in the prior art that the drilling and lowering sampling operations need to be repeated many times, which makes the entire sampling process cumbersome, thereby reducing the sampling work efficiency and increasing the work intensity.

[0038] 2. By aligning the six marking scales with the six groups of sampling tube assemblies and the handle with the clamping rod, the transmission connection between the clamping rod and the corresponding driving assembly can be accurately controlled by observing the alignment of the handle with the marking scales, and it is convenient for the staff to select the sampling tube assembly, thereby improving the convenience of use of the present invention.

[0039] 3. In the guide assembly, the spring 1 is arranged so that the driving assembly maintains a stable height position when it is not connected to the operating mechanism. In this state, the transmission block is located between the two side plates at one end away from the inner wall of the mounting tube, the protrusion 1 at the top of the driving block is located at the top position in the slide groove 1, and the front end of the sampling tube assembly is located in the through hole 2 and the through hole 1, thereby ensuring the connection accuracy between the clamping rod and the L-shaped clamping piece, and preventing the front end of the sampling tube assembly from being exposed to the outside of the mounting tube when the sampling action is not performed, which may cause the sampling tube assembly to be contaminated by foreign soil before sampling.

[0040] 4. When the hydrostatic drill enters the hole, the universal wheel in the mobile assembly is used to automatically align the device body with the hole, so that the sampling mechanism is coaxial with the hole; after the automatic alignment is completed, the positioning cone in the mobile assembly is inserted into the bottom surface, so that the device body maintains a stable working state.

[0041] 5. In the sampling tube assembly of the present invention, by arranging the columnar mounting seat, the square tube, the conical block, the sealing assembly and the transmission mechanism, a soil column smaller than the square tube can be obtained in the square tube during sampling, that is, there is no extrusion contact between the soil column and the inner wall of the square tube, so there will be no problem of difficulty in taking out the soil sample due to the viscosity of the soil, and there will be no problem of residual soil attached to the wall of the sampling tube, which may be mixed into the new soil sample during the next sampling, resulting in inaccurate sampling results.

[0042] 6. After the sampling of the sampling tube assembly is completed, the sampling hole will normally be blocked by the soil at the sampling position, thereby closing the sampling tube assembly, and then cooperating with the sealing effect of the capping assembly to provide double-layer protection for the soil column sample in the other tube, which can effectively reduce the possibility of soil and other debris outside the sampling tube assembly contaminating the soil column inside the other tube during the upward movement of the device body, which is conducive to ensuring the accuracy of subsequent analysis results.

[0043] 7. When the cylindrical mounting seat is telescopically sliding, the cooperation between the ball and the spiral groove makes the cylindrical mounting seat rotate while performing linear motion, so that the insertion method of the sampling tube assembly is changed from static pressure to screw-in, reducing the resistance of the sampling tube assembly when entering the soil and removing it from the soil, thereby improving the smoothness of the sampling operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. Obviously, a person skilled in the art can obtain other drawings based on these drawings without creative work.

[0045] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0046] Figure 2 yes Figure 1 A magnified view of part A;

[0047] Figure 3 It is a schematic diagram of the structure inside the sampling mechanism of the present invention;

[0048] Figure 4 yes Figure 3 A magnified view of part B;

[0049] Figure 5 It is a structural schematic diagram of the connection relationship between the ring and the operating shaft in the present invention;

[0050] Figure 6 yes Figure 3 Enlarged view of part C;

[0051] Figure 7 yes Figure 6 Enlarged view of part E in the middle;

[0052] Figure 8 yes Figure 6 A magnified view of part D in the middle;

[0053] Fig. 9 yes Figure 6 Enlarged view of part F;

[0054] Fig.10 is a three-dimensional schematic diagram of the sampling assembly of the present invention;

[0055] Fig.11 It is a three-dimensional schematic diagram of the connection relationship between the hexagonal prism, the sampling tube assembly and the driving assembly in the present invention;

[0056] Fig.12 yes Fig.11 Enlarged view of section G;

[0057] Fig.13 is a three-dimensional schematic diagram of the sampling tube assembly of the present invention;

[0058] Fig.14 yes Fig.13 Enlarged view of section H;

[0059] Fig.15It is a three-dimensional schematic diagram of the connection relationship between the square tube and the columnar mounting seat in the present invention;

[0060] Fig.16 is a three-dimensional schematic diagram of the square tube of the present invention;

[0061] Fig.17 yes Fig.16 A magnified view of part I;

[0062] Fig.18 yes Fig.17 Enlarged view of the middle J section;

[0063] Fig.19 is a three-dimensional schematic diagram of a conical block in the present invention;

[0064] Fig. 20 This is the structural intention of the present invention to show the connection relationship between the tapered block and the square tube;

[0065] Fig.21 It is a structural schematic diagram of the connection relationship between the conical block and the square tube in the sampling state in the present invention;

[0066] Fig. 22 It is a three-dimensional schematic diagram of the connection relationship between the rotary drive structure and the cylindrical mounting seat in the present invention;

[0067] The reference numerals in the figures are as follows:

[0068] 1-mounting table, 2-pillar, 3-hydraulic cylinder, 4-sampling mechanism, 5-bottom plate, 6-universal wheel, 7-positioning cone, 8-connecting plate, 9-connecting rod 1, 10-mounting plate, 11-electric telescopic rod, 12-connecting rod 2, 13-operating shaft, 14-limiting slide groove 1, 15-ring, 16-handle, 17-cover cylinder, 18-driving rod, 19-mounting cylinder, 20-static pressure drill bit, 21-sampling assembly, 22-driving block, 23-clamping rod, 24-L-shaped clamping piece, 25-through hole 1, 26-through hole 2, 27-conical block, 28-column mounting seat, 29-slide groove 1, 30-bump 1, 31-hexagonal prism, 32-driving assembly, 3 3-sampling tube assembly, 34-fixed seat one, 35-guide rod, 36-spring one, 37-slider, 38-side plate, 39-drive groove, 40-rotating shaft, 41-transmission block, 42-mounting plate, 43-sampling hole, 44-countersunk hole, 45-screw, 46-square tube, 47-square slide, 48-limiting slide three, 49-connecting rod three, 50-block, 51-fixed seat two, 52-baffle, 53-mounting groove, 54-mounting shaft, 55-limiting slide two, 56-roller, 57-sleeve, 58-spring two, 59-mounting block, 60-support rod, 61-sphere, 62-spiral slide, 63-bump two, 64-marking scale. DETAILED DESCRIPTION

[0069] 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.

[0070] Embodiment 1:

[0071] See also Figure 1 to Figure 21 In an embodiment of the present invention, a soil layer sampling device for geological exploration includes a mounting platform 1, the bottom surface of the mounting platform 1 is fixedly connected with pillars 2 near its four corners, the bottom end of the pillar 2 is fixedly installed with a moving component, a hydraulic cylinder 3 is vertically fixedly installed at the center of the top surface of the mounting platform 1, the telescopic end of the hydraulic cylinder 3 slides through the mounting platform 1 to the bottom of the mounting platform 1, the moving component includes a bottom plate 5 fixedly installed at the bottom end of the pillar 2, a universal wheel 6 is fixedly installed on the bottom surface of the bottom plate 5, and a positioning cone 7 is threadedly installed on the top surface of the bottom plate 5;

[0072] The telescopic end of the hydraulic cylinder 3 is fixedly connected with a sampling mechanism 4, and the sampling mechanism 4 includes a mounting cylinder 19 arranged directly below the hydraulic cylinder 3, and a static pressure drill bit 20 is detachably fixedly installed at the bottom end of the mounting cylinder 19, and the periphery of the mounting cylinder 19 is provided with six through holes 1 25 distributed in an array about the axis of the mounting cylinder 19, and the inner end surface of the through hole 1 25 is provided with a through hole 26 that penetrates the interior of the mounting cylinder 19, and the inner wall of the mounting cylinder 19 is provided with six slide grooves 1 29 respectively located directly above the six through holes 26;

[0073] A sampling assembly 21 is fixedly installed in the installation cylinder 19. The sampling assembly 21 includes a hexagonal prism 31 fixedly installed at the center of the inner bottom surface of the installation cylinder 19. Guide assemblies are fixedly installed on the six sides of the hexagonal prism 31. A driving assembly 32 is slidably installed on the guiding assembly. The end of the driving assembly 32 away from the hexagonal prism 31 is slidably installed in a slide groove 29 at a corresponding position.

[0074] The driving assembly 32 is drivingly connected to a group of sampling tube assemblies 33. One end of the sampling tube assembly 33 away from the driving assembly 32 is located in the through hole 1 25 and the through hole 2 26 at corresponding positions when no sampling action is performed.

[0075] The top of the mounting tube 19 is fixedly connected with a cover tube 17 coaxial with the mounting tube 19, an operating mechanism is arranged between the top of the cover tube 17 and the telescopic end of the hydraulic cylinder 3, and six marking scales 64 for use with the operating mechanism are arranged on the top surface of the cover tube 17, and the six marking scales 64 are respectively aligned with the six groups of sampling tube assemblies 33; the setting of the marking scales 64 facilitates the identification of the six groups of sampling tube assemblies 33, and can be used to record the depth information of the sampled soil in the sampling tube assemblies 33, so as to avoid confusion among the staff when taking out the samples.

[0076] The operating end of the operating mechanism slides through the top of the cover tube 17, and slides through the top of the mounting tube 19 to the inside of the mounting tube 19. The operating mechanism is used to selectively control a set of driving components 32 in the mounting tube 19 to drive a corresponding set of sampling tube components 33 to perform soil sampling.

[0077] The current sampling device needs to repeat the drilling and lowering sampling operations many times when in use to complete the sampling of soil at different depths, which makes the entire sampling process more cumbersome, reduces the sampling efficiency, and increases the work intensity.

[0078] When the present invention is used: the device body is moved to the top of the sampling hole (the depth range of the sampling hole includes multiple depth positions that need to be sampled, and the inner diameter of the sampling hole is slightly smaller than the diameter of the static pressure drill bit 20) through the moving assembly, so that the static pressure drill bit 20 is located above the hole, and then the sampling mechanism 4 is pressed down by the hydraulic cylinder 3 so that the static pressure drill bit 20 enters the hole. When the static pressure drill bit 20 enters the hole, the universal wheel 6 in the moving assembly is used to automatically align the device body with the hole, so that the sampling mechanism 4 is coaxial with the hole; after the automatic centering is completed, the positioning cone 7 in the moving assembly is inserted into the bottom surface, so that the device body maintains a stable working state;

[0079] After reaching the first sampling depth position, the downward movement stops. At this time, a group of driving components 32 are controlled by the operating mechanism so that a corresponding group of sampling tube components 33 are extended out of the mounting tube 19 and inserted into the hole wall, so that the soil at the depth position enters the sampling tube component 33, and then the sampling tube component 33 is reset by the operating mechanism through the driving component 32, thereby completing the sampling operation for one depth position; similarly, after reaching the next sampling depth position, the sampling work is performed by the operating mechanism until the sampling operations at multiple depth positions are completed, and then the sampling mechanism 4 is moved out of the hole by the hydraulic cylinder 3; therefore, the operating mechanism in the present invention cooperates with the arrangement of the six groups of driving components 32 and the sampling tube component 33 in the sampling component 21 to realize the sampling work at multiple depth positions in a single lowering process; the problem that the drilling and lowering sampling operations in the prior art need to be repeated multiple times, resulting in the entire sampling process becoming cumbersome, thereby reducing the sampling work efficiency and increasing the work intensity is solved.

[0080] Among them, the diameter of the static pressure drill bit 20 is larger than that of the mounting tube 19. The static pressure drill bit 20 is squeezed and contacted with the hole wall during the downward movement, so that there is a gap between the hole wall and the outer periphery of the mounting tube 19, avoiding the situation where soil enters the sampling tube assembly 33 through the through hole 26 when no sampling occurs, thereby ensuring the purity of the sampled soil in the sampling tube assembly 33, which is beneficial to improving the accuracy of subsequent analysis results.

[0081] like Fig.10 and Fig.11 As shown, the guide assembly includes two fixed seats 34 fixedly mounted on the side surfaces of the hexagonal prism 31, a guide rod 35 is fixedly connected between the two fixed seats 34, a slider 37 is slidably mounted on the periphery of the guide rod 35, and a spring 36 mounted on the periphery of the guide rod 35 is fixedly connected between the slider 37 and the upper fixed seat 34.

[0082] like Figure 7 , Fig. 9 and Figure 10 to Figure 12 As shown, the driving assembly 32 includes a driving block 22, which is arranged between the guide rod 35 and the inner wall of the mounting tube 19. The middle position of the side of the driving block 22 close to the slider 37 is fixedly connected to the slider 37. A protrusion 30 is fixedly installed on the top surface of the driving block 22 at the end away from the hexagonal prism 31. The end of the protrusion 30 away from the driving block 22 is slidably installed in a slide groove 29 at a corresponding position. The side of the driving block 22 away from the hexagonal prism 31 is an inclined surface, and side plates 38 are fixedly installed on both sides of the inclined surface. The side surfaces of the side plates 38 are provided with driving grooves 39.

[0083] A connecting assembly is slidably mounted between the two side plates 38, and a sampling tube assembly 33 is rotatably mounted on one end of the connecting assembly away from the columnar mounting seat 28;

[0084] An L-shaped clamping member 24 for use with the operating mechanism is fixedly mounted on the top surface of the driving block 22 .

[0085] like Figure 1 , Figures 4 to 6 and Fig. 9 As shown, the operating mechanism includes a connecting plate 8 fixedly mounted on the telescopic end of the hydraulic cylinder 3, a plurality of connecting rods 9 are fixedly connected to the bottom surface of the connecting plate 8, the bottom ends of the plurality of connecting rods 9 are commonly fixedly connected to a mounting plate 10 located directly below the connecting plate 8, a plurality of connecting rods 12 are fixedly connected to the bottom surface of the mounting plate 10, and the ends of the plurality of connecting rods 12 away from the mounting plate 10 are all fixedly connected to the top position of the outer periphery of the cover tube 17;

[0086] An electric telescopic rod 11 is fixedly installed at the center position of the top surface of the mounting plate 10, and the telescopic end of the electric telescopic rod 11 slides through the mounting plate 10 to between the mounting plate 10 and the cover tube 17. The telescopic end of the electric telescopic rod 11 is fixedly connected to an operating shaft 13 coaxial with the cover tube 17, and the bottom end of the operating shaft 13 slides through the top end of the cover tube 17 and the top end of the mounting tube 19 in sequence to the inside of the mounting tube 19, and the bottom end of the operating shaft 13 is fixedly connected to a driving rod 18, and the end of the driving rod 18 away from the operating shaft 13 is fixedly installed with a clamping rod 23 used in conjunction with an L-shaped clamping piece 24;

[0087] The periphery of the operating shaft 13 is provided with two symmetrically distributed limiting slide grooves 14 near the top. The periphery of the operating shaft 13 is provided with a circular ring 15 located between the electric telescopic rod 11 and the cover tube 17. The bottom surface of the circular ring 15 is connected to the top of the cover tube 17 in a damping rotation manner. Two protrusions 63 are fixedly installed on the inner wall of the circular ring 15. The ends of the two protrusions 63 away from the inner wall of the circular ring 15 are respectively slidably clamped in the two limiting slide grooves 14.

[0088] A handle 16 is fixedly connected to the periphery of the ring 15 , and the handle 16 is located just above the driving rod 18 .

[0089] like Figure 11 to Figure 13 As shown, the connection assembly includes a mounting plate 42, the mounting plate 42 is coaxially arranged with a through hole 25 at a corresponding position, a transmission block 41 is fixedly installed on the periphery of the mounting plate 42, and one end of the transmission block 41 away from the mounting plate 42 extends between the two side plates 38, and both sides of the transmission block 41 are rotatably installed with a rotating shaft 40 at one end located between the two side plates 38, and one end of the two rotating shafts 40 away from the transmission block 41 is respectively slidably clamped in the driving grooves 39 of the two side plates 38;

[0090] The sampling tube assembly 33 is rotatably connected to one side of the mounting plate 42 .

[0091] The working principle of the operating mechanism controlling the sampling tube assembly 33 to perform sampling:

[0092] When not sampling, the transmission block 41 is located between the two side plates 38 at one end away from the inner wall of the mounting tube 19, and the protrusion 30 at the top of the driving block 22 is located at the top position in the slide groove 29;

[0093] When the operating mechanism is in use, the electric telescopic rod 11 is first controlled to retract a certain distance, so that the height of the clamping rod 23 is higher than the height of the L-shaped clamping piece 24, and then the handle 16 is rotated to between the two marking scales 64, and the handle 16 drives the operating shaft 13 to rotate through the ring 15, and the operating shaft 13 drives the clamping rod 23 to move between the two L-shaped clamping pieces 24, and then the electric telescopic rod 11 is controlled to extend a certain distance, so that the clamping rod 23 drops to between the upper part of the L-shaped clamping piece 24 and the top surface of the driving block 22, and then the operating shaft 13 is rotated counterclockwise by the handle 16, thereby driving the clamping rod 23 to move counterclockwise to the L-shaped clamping piece 24, at which time the clamping rod 23 is vertically limited between the top surface of the driving block 22 in the group of driving components 32 and the L-shaped clamping piece 24;

[0094] Then, the electric telescopic rod 11 is controlled to extend, so that the clamping rod 23 drives the block 22 downward. After the force is applied, the block 22 slides downward under the limiting action of the guide assembly and the slide groove 1 29. The downward movement of the block 22 cooperates with the squeezing of the rotating shaft 40 by the drive groove 39, so that the mounting plate 42 drives the sampling tube assembly 33 to slide outward from the mounting tube 19 through the second through hole 26 and the first through hole 1 25, thereby achieving the purpose of inserting the sampling tube assembly 33 into the hole wall for soil sampling.

[0095] After the soil is loaded into the sampling tube assembly 33, the electric telescopic rod 11 is controlled to retract, thereby driving the clamping rod 23 to rise, and the clamping rod 23 drives the driving block 22 to rise through the L-shaped clamping piece 24 until the driving assembly 32 and the sampling tube assembly 33 are reset;

[0096] During the entire sampling process, by controlling the card rod 23 to select the transmission connection with different drive components 32, the sampling action of different sampling tube components 33 is selectively controlled, thereby realizing the operation of soil sampling at multiple depth positions during a single lowering process in the sampling hole, thereby improving the sampling work efficiency.

[0097] Among them, by aligning the six marking scales 64 with the six groups of sampling tube assemblies 33 and the handle 16 with the clamping rod 23, the transmission connection between the clamping rod 23 and the corresponding drive assembly 32 can be accurately controlled by observing the alignment of the handle 16 with the marking scales 64, and it is convenient for the staff to select the sampling tube assembly 33, thereby improving the convenience of use of the present invention.

[0098] In the guide assembly, by setting a spring 36, the driving assembly 32 maintains a stable height position when not connected to the operating mechanism. In this state, the transmission block 41 is located between the two side plates 38 at one end away from the inner wall of the mounting tube 19, the protrusion 30 at the top of the driving block 22 is located at the top position in the slide groove 29, and the front end of the sampling tube assembly 33 is located in the through hole 26 and the through hole 1 25, thereby ensuring the connection accuracy between the clamping rod 23 and the L-shaped clamping piece 24, and preventing the front end of the sampling tube assembly 33 from being exposed to the outside of the mounting tube 19 when the sampling action is not performed, which may cause the sampling tube assembly 33 to be contaminated by a foreign layer of soil before sampling.

[0099] Embodiment 2:

[0100] See also Figure 8 , Figure 10 to Figure 21 On the basis of Example 1, the sampling tube assembly 33 includes a cylindrical mounting seat 28 coaxially arranged with the mounting plate 42, one end of the cylindrical mounting seat 28 is rotatably connected to the side of the mounting plate 42, and the other end of the cylindrical mounting seat 28 is located in the corresponding position of the second through hole 26 when the sampling action is not performed, and the outer periphery of the cylindrical mounting seat 28 is in rotatable sliding contact with the inner wall of the second through hole 26;

[0101] A square tube 46 is slidably inserted into one end of the columnar mounting seat 28 away from the mounting plate 42, and a conical block 27 is slidably mounted on one end of the square tube 46 away from the columnar mounting seat 28. A countersunk hole 44 is provided on the periphery of the columnar mounting seat 28 at a position away from the mounting plate 42, and a screw 45 is installed in the countersunk hole 44 to thread the columnar mounting seat 28. The screw 45 is used to limit the sliding movement between the square tube 46 and the columnar mounting seat 28;

[0102] A sealing assembly for controlling the opening and closing of the square tube 46 is installed in the square tube 46 at a position close to the conical block 27. The sealing assembly is connected to the conical block 27 by transmission. The sliding movement between the conical block 27 and the square tube 46 is used to control the opening and closing of the sealing assembly. When the sampling tube assembly 33 is not performing a sampling action, the conical block 27 is located in the through hole 1 25 at the corresponding position, and the outer edge of the conical block 27 is in rotatable sliding contact with the inner wall of the through hole 1 25.

[0103] Stoppers 50 are fixedly mounted on the four side surfaces of the square tube 46 at the middle position of one end close to the conical block 27 .

[0104] like Fig.17 , Fig.18 , Fig. 20 and Fig.21As shown, the cover assembly includes four groups of baffle assemblies respectively fixedly mounted on the four inner sides of the square tube 46, and the baffle assembly includes two fixing seats 51 fixedly mounted on the inner side of the square tube 46 near the two sides, and a mounting shaft 54 ​​is rotatably mounted between the two fixing seats 51, and a baffle 52 is fixedly connected to the periphery of the mounting shaft 54, and the baffle 52 is an isosceles triangle structure. In the closed state, the baffles 52 in the four groups of baffle assemblies together form a partition that blocks the square tube 46;

[0105] A mounting groove 53 is formed on the outer side of the baffle plate 52 , and two limiting sliding grooves 55 are formed on both sides of the mounting groove 53 .

[0106] like Fig.13 and Figure 19 to Figure 21 As shown, a sampling hole 43 is provided in the conical block 27 along its axial direction, and a square slide groove 47 is provided on the end surface of the conical block 27 close to the square tube 46 to centrally surround the sampling hole 43. The square slide groove 47 is a square structure used in conjunction with the square tube 46. The middle positions of the four outer walls of the square slide groove 47 are provided with three limiting slide grooves 48 arranged parallel to the axis of the conical block 27. The end of the square tube 46 close to the conical block 27 is slidably installed in the square slide groove 47, and the ends of the four stoppers 50 away from the square tube 46 are respectively slidably clamped in the four limiting slide grooves 48, and the ends of the stoppers 50 and the limiting slide grooves 48 away from the square tube 46 are fixedly connected with the two springs 58.

[0107] Four transmission components are fixedly installed on the end surface of the conical block 27 close to the square tube 46. The four transmission components are located between the sampling hole 43 and the square slide groove 47. The ends of the four transmission components away from the conical block 27 are respectively connected to the four baffle components.

[0108] like Figures 17 to 21 As shown, the transmission assembly includes a connecting rod 3 49 fixedly connected to the conical block 27, and a shaft sleeve 57 is fixedly installed at one end of the connecting rod 3 49 away from the conical block 27. The shaft sleeve 57 is located in the installation groove 53 corresponding to the baffle 52, and a rotatable roller shaft 56 is installed through the shaft sleeve 57. The two ends of the roller shaft 56 are respectively slidably clamped in the limiting sliding grooves 55 on both sides of the installation groove 53;

[0109] When the sampling action is not performed, the roller shaft 56 is located at one end of the mounting groove 53 close to the mounting shaft 54, and the connecting rod 3 49 and the baffle 52 are in a vertical state.

[0110] The stickiness between the soil in the existing sampling tube and the tube wall makes it inconvenient to remove the soil in the tube; the soil may be tightly attached to the tube wall and difficult to remove; this will affect the accuracy and efficiency of sampling. After the soil is removed, the tube wall of the sampling tube will adhere to the soil, and the residual soil may be mixed into the new soil sample during the next sampling, resulting in contamination and inaccuracy of the sampling results.

[0111] When the sampling tube assembly 33 of the present invention is used:

[0112] The cylindrical mounting seat 28 is pushed by the mounting plate 42, and the cylindrical mounting seat 28 slides and moves in the second through hole 26, and the front end of the cylindrical mounting seat 28 is inserted into the hole wall. During the process, the conical block 27 breaks the soil at the front end, which improves the smoothness of the sampling tube assembly 33 entering the hole wall. During the insertion process, the pressure between the conical block 27 and the second through hole 26 increases, and the front end of the square tube 46 will be relatively deep in the square slide groove 47, that is, the conical block 27 and the square tube 46 slide close to each other. At this time, the second spring 58 is in a compressed state, and the sleeve 57 is relatively in the mounting groove 53. For the end moved away from the mounting shaft 54, the angle between the baffle 52 and the connecting rod 49 is an obtuse angle, that is, the baffle 52 is in an inverted state, and the four baffles 52 are inverted so that the opening at the front end of the square tube 46 is in an open state; during the insertion of the sampling tube assembly 33, the soil passes through the sampling hole 43 of the conical block 27 to form a soil column, and then enters the square tube 46, thereby completing the sampling operation; wherein, the opening formed by the four baffles 52 in the inverted state is larger than the area of ​​the sampling hole 43, that is, the soil column will not interfere with the baffles 52 when passing between the four baffles 52;

[0113] The maximum diameter of the conical block 27 is greater than the diameter of the cylindrical mounting seat 28. The diameter of the hole formed by the conical block 27 after being inserted into the soil is greater than the diameter of the cylindrical mounting seat 28. Therefore, the cylindrical mounting seat 28 can avoid soil adhesion to its periphery during the insertion process, thereby reducing the subsequent cleaning workload of the sampling tube assembly 33. It can also avoid the accumulation of soil in the through hole 1 25 when the cylindrical mounting seat 28 is retracted back into the mounting tube 19, thereby preventing the conical block 27 from being normally reset into the conical block 27.

[0114] When the columnar mounting seat 28 is retracted into the mounting tube 19, due to the large friction between the conical block 27 and the soil, combined with the restoring elastic force of the second spring 58, the conical block 27 and the square tube 46 will be reset, and the baffle 52 will be driven to reset by the connecting rod 3 49. The reset of the four baffles 52 will cut off the soil column in the square tube 46, avoiding the situation where the soil column is taken out of the square tube 46 due to the small friction between the soil column and the inner wall of the sampling hole 43;

[0115] Therefore, in the sampling tube assembly 33 of the present invention, by configuring the columnar mounting seat 28, the square tube 46, the conical block 27, the sealing assembly and the transmission mechanism, a soil column smaller than the square tube 46 can be obtained in the square tube 46 during sampling, that is, there is no extrusion contact between the soil column and the inner wall of the square tube 46, so there will be no problem of difficulty in taking out the soil sample due to the viscosity of the soil, and there will be no problem of residual soil attached to the wall of the sampling tube, which may be mixed into the new soil sample during the next sampling, resulting in inaccurate sampling results.

[0116] Moreover, after the sampling of the sampling tube assembly 33 is completed, the sampling hole 43 will normally be blocked by the soil at the sampling position, thereby closing the sampling tube assembly 33, and the sealing effect of the cover assembly provides double protection for the soil column sample in the other tube 46, which can effectively reduce the possibility of soil outside the sampling tube assembly 33 and other debris contaminating the soil column inside the other tube 46 during the upward movement of the device body, which is beneficial to ensure the accuracy of subsequent analysis results.

[0117] The sliding connection between the square tube 46 and the columnar mounting seat 28, combined with the tightening and loosening action of the screw 45, makes the sampling tube assembly 33 a combined structure that can be quickly disassembled and assembled; when it is necessary to remove the soil column, loosen the screw 45, pull the square tube 46 out of the columnar mounting seat 28, and then tip the square tube 46 to remove the soil column; therefore, through this arrangement, the sample removal operation is facilitated, further improving the ease of use of the present invention.

[0118] Embodiment 3:

[0119] See also Fig. 22 On the basis of Example 2, a rotation drive structure is further provided in the sampling tube assembly 33, and the rotation drive structure includes a spiral slide groove 62 provided on the periphery of the cylindrical mounting seat 28 and a mounting block 59 fixedly mounted on the inner wall of the mounting cylinder 19, and the mounting block 59 is located below the cylindrical mounting seat 28;

[0120] A support rod 60 is vertically fixedly mounted on the top surface of the mounting block 59 , and a ball 61 slidably mounted in a spiral groove 62 is fixedly mounted on the top end of the support rod 60 .

[0121] When the columnar mounting seat 28 is telescopically slid, the cooperation between the ball 61 and the spiral groove 62 enables the columnar mounting seat 28 to rotate while performing linear motion, so that the insertion method of the sampling tube assembly 33 is changed from static pressure to screw-in, reducing the resistance encountered by the sampling tube assembly 33 when entering the soil and removing it from the soil, thereby improving the smoothness of the sampling operation.

[0122] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A soil sampling device for geological exploration, comprising a mounting platform (1), the bottom surface of the mounting platform (1) is fixedly connected to pillars (2) at positions near the four corners thereof, a moving component is fixedly installed at the bottom end of the pillar (2), a hydraulic cylinder (3) is vertically fixedly installed at the center position of the top surface of the mounting platform (1), and the telescopic end of the hydraulic cylinder (3) slides through the mounting platform (1) to the bottom of the mounting platform (1), characterized in that: The moving assembly comprises a bottom plate (5) fixedly mounted on the bottom end of the support (2), a universal wheel (6) fixedly mounted on the bottom surface of the bottom plate (5), and a positioning cone (7) threadedly mounted through the top surface of the bottom plate (5); The telescopic end of the hydraulic cylinder (3) is fixedly connected to a sampling mechanism (4), the sampling mechanism (4) comprising a mounting cylinder (19) arranged directly below the hydraulic cylinder (3), a static pressure drill bit (20) being detachably fixedly mounted on the bottom end of the mounting cylinder (19), six through holes (25) arranged in an array about the axis of the mounting cylinder (19) being formed on the periphery of the mounting cylinder (19), a through hole (26) penetrating the interior of the mounting cylinder (19) being formed on the inner end surface of the through hole (25), and six slide grooves (29) respectively located directly above the six through holes (26) being formed on the inner wall of the mounting cylinder (19); A sampling assembly (21) is fixedly mounted in the mounting tube (19), the sampling assembly (21) comprising a hexagonal prism (31) fixedly mounted at the center of the inner bottom surface of the mounting tube (19), guide assemblies are fixedly mounted on the six side surfaces of the hexagonal prism (31), a driving assembly (32) is slidably mounted on the guiding assembly, and an end of the driving assembly (32) away from the hexagonal prism (31) is slidably mounted in the slide groove (29) at a corresponding position; The driving assembly (32) is drivingly connected to a group of sampling tube assemblies (33), and one end of the sampling tube assembly (33) away from the driving assembly (32) is located in the first through hole (25) and the second through hole (26) at corresponding positions when no sampling action is performed; The top end of the mounting tube (19) is fixedly connected to a cover tube (17) coaxial with the mounting tube (19); an operating mechanism is provided between the top of the cover tube (17) and the telescopic end of the hydraulic cylinder (3); and six marking scales (64) for use with the operating mechanism are provided on the top surface of the cover tube (17); the six marking scales (64) are respectively aligned with six groups of sampling tube assemblies (33); The operating end of the operating mechanism slides through the top of the cover tube (17) and slides through the top of the mounting tube (19) to the inside of the mounting tube (19), and the operating mechanism is used to selectively control a set of driving components (32) in the mounting tube (19) to drive a corresponding set of sampling tube components (33) to perform soil sampling; The guide assembly comprises two fixing seats (34) fixedly mounted on the side surfaces of the hexagonal prism (31); a guide rod (35) is fixedly connected between the two fixing seats (34); a slider (37) is slidably mounted on the periphery of the guide rod (35); a spring (36) sleeved on the periphery of the guide rod (35) is fixedly connected between the slider (37) and the upper fixing seat (34); The driving assembly (32) comprises a driving block (22), the driving block (22) being arranged between the guide rod (35) and the inner wall of the mounting tube (19), the driving block (22) being fixedly connected to the slider (37) at a middle position on one side thereof close to the slider (37), a protrusion (30) being fixedly mounted on the top surface of the driving block (22) at an end away from the hexagonal prism (31), the end of the protrusion (30) away from the driving block (22) being slidably mounted in a slide groove (29) at a corresponding position, the side of the driving block (22) away from the hexagonal prism (31) being an inclined surface, the two sides of the inclined surface being fixedly mounted with side plates (38), the side surfaces of the side plates (38) being provided with driving grooves (39); A connection assembly is slidably mounted between the two side plates (38), and the sampling tube assembly (33) is rotatably mounted on one end of the connection assembly away from the columnar mounting seat (28); An L-shaped clamping piece (24) used in conjunction with the operating mechanism is fixedly mounted on the top surface of the driving block (22); The operating mechanism comprises a connecting plate (8) fixedly mounted on the telescopic end of the hydraulic cylinder (3), a plurality of connecting rods (9) being fixedly connected to the bottom surface of the connecting plate (8), the bottom ends of the plurality of connecting rods (9) being fixedly connected to a mounting plate (10) located directly below the connecting plate (8), a plurality of connecting rods (12) being fixedly connected to the bottom surface of the mounting plate (10), and the ends of the plurality of connecting rods (12) away from the mounting plate (10) being fixedly connected to the top end of the outer periphery of the cover tube (17); An electric telescopic rod (11) is fixedly mounted at the center position of the top surface of the mounting plate (10); the telescopic end of the electric telescopic rod (11) slides through the mounting plate (10) to between the mounting plate (10) and the cover tube (17); the telescopic end of the electric telescopic rod (11) is fixedly connected to an operating shaft (13) coaxial with the cover tube (17); the bottom end of the operating shaft (13) slides through the top end of the cover tube (17) and the top end of the mounting tube (19) in sequence to the inside of the mounting tube (19); the bottom end of the operating shaft (13) is fixedly connected to a driving rod (18); and the end of the driving rod (18) away from the operating shaft (13) is fixedly mounted with a clamping rod (23) used in conjunction with the L-shaped clamping piece (24); The outer periphery of the operating shaft (13) is provided with two symmetrically distributed limiting sliding grooves (14) near the top, the outer periphery of the operating shaft (13) is provided with a circular ring (15) located between the electric telescopic rod (11) and the cover tube (17), the bottom surface of the circular ring (15) is connected to the top of the cover tube (17) in a damping rotation manner, and two protrusions (63) are fixedly mounted on the inner wall of the circular ring (15), and the ends of the two protrusions (63) away from the inner wall of the circular ring (15) are respectively slidably clamped in the two limiting sliding grooves (14); A handle (16) is fixedly connected to the periphery of the circular ring (15), and the handle (16) is located directly above the driving rod (18).

2. A geological exploration soil layer sampling device according to claim 1, characterized in that: The connection assembly comprises a mounting plate (42), the mounting plate (42) being coaxially arranged with a through hole (25) at a corresponding position, a transmission block (41) being fixedly mounted on the periphery of the mounting plate (42), one end of the transmission block (41) away from the mounting plate (42) extending between the two side plates (38), two sides of the transmission block (41) being rotatably mounted with a rotating shaft (40) at one end located between the two side plates (38), and one end of the two rotating shafts (40) away from the transmission block (41) being respectively slidably clamped in the driving grooves (39) of the two side plates (38).

3. A geological exploration soil layer sampling device according to claim 2, characterized in that: The sampling tube assembly (33) comprises a columnar mounting seat (28) coaxially arranged with the mounting plate (42), one end of the columnar mounting seat (28) being rotatably connected to the side surface of the mounting plate (42), the other end of the columnar mounting seat (28) being located in the second through hole (26) at the corresponding position when no sampling action is performed, and the periphery of the columnar mounting seat (28) is in rotatable sliding contact with the inner wall of the second through hole (26); A square tube (46) is slidably inserted into one end of the columnar mounting seat (28) away from the mounting plate (42); a conical block (27) is slidably mounted on one end of the square tube (46) away from the columnar mounting seat (28); a countersunk hole (44) is provided on the periphery of the columnar mounting seat (28) at a position away from the mounting plate (42); a screw (45) is installed in the countersunk hole (44) through which the columnar mounting seat (28) is threaded; the screw (45) is used to limit the sliding movement between the square tube (46) and the columnar mounting seat (28); A sealing assembly for controlling the opening and closing of the square tube (46) is installed in the square tube (46) at a position close to the conical block (27); the sealing assembly is transmission-connected to the conical block (27); the sliding movement between the conical block (27) and the square tube (46) is used to control the opening and closing of the sealing assembly; when the sampling tube assembly (33) is not performing a sampling action, the conical block (27) is located in the through hole 1 (25) at a corresponding position, and the outer edge of the conical block (27) is in rotatable sliding contact with the inner wall of the through hole 1 (25); Stoppers (50) are fixedly mounted on the four side surfaces of the square tube (46) at the middle position of one end close to the conical block (27).

4. A soil layer sampling device for geological exploration according to claim 3, characterized in that: The sealing cover assembly comprises four groups of baffle assemblies respectively fixedly mounted on four inner side surfaces of the square tube (46), the baffle assembly comprising two fixing seats (51) fixedly mounted on the inner side surface of the square tube (46) near two sides, a mounting shaft (54) rotatably mounted between the two fixing seats (51), a baffle (52) fixedly connected to the periphery of the mounting shaft (54), the baffle (52) being an isosceles triangle structure, and in a closed state, the baffles (52) in the four groups of baffle assemblies jointly form a partition that blocks the square tube (46); A mounting groove (53) is provided on the outer side surface of the baffle (52), and two limiting sliding grooves (55) are provided on both sides of the mounting groove (53).

5. A geological exploration soil layer sampling device according to claim 4, characterized in that: The conical block (27) is provided with a sampling hole (43) along its axial direction. A square slide groove (47) is provided on the end surface of the conical block (27) close to the square tube (46) to centrally surround the sampling hole (43). The square slide groove (47) is a square structure used in conjunction with the square tube (46). The middle positions of the four outer walls of the square slide groove (47) are provided with three limiting slide grooves (48) arranged parallel to the axis of the conical block (27). The end of the square tube (46) close to the conical block (27) is slidably installed in the square slide groove (47), and the ends of the four stoppers (50) away from the square tube (46) are respectively slidably clamped in the four limiting slide grooves (48). A second spring (58) is fixedly connected between the stopper (50) and the end of the limiting slide groove (48) away from the square tube (46). Four transmission components are fixedly mounted on the end surface of the conical block (27) close to the square tube (46), the four transmission components are located between the sampling hole (43) and the square slide groove (47), and one end of the four transmission components away from the conical block (27) is respectively connected to the four baffle components.

6. A geological exploration soil layer sampling device according to claim 5, characterized in that: The transmission assembly comprises a connecting rod 3 (49) fixedly connected to the conical block (27), a shaft sleeve (57) fixedly installed at one end of the connecting rod 3 (49) away from the conical block (27), the shaft sleeve (57) being located in a mounting groove (53) corresponding to the baffle (52), a rotatable roller shaft (56) being installed through the shaft sleeve (57), and two ends of the roller shaft (56) being slidably clamped in the second limiting sliding groove (55) on both sides of the mounting groove (53); When the sampling action is not performed, the roller shaft (56) is located at one end of the mounting groove (53) close to the mounting shaft (54), and the connecting rod (49) and the baffle (52) are in a vertical state.

7. A soil layer sampling device for geological exploration according to claim 3, characterized in that: The sampling tube assembly (33) is also provided with a rotation drive structure, the rotation drive structure comprising a spiral slide groove (62) provided on the periphery of the columnar mounting seat (28) and a mounting block (59) fixedly mounted on the inner wall of the mounting cylinder (19), the mounting block (59) being located below the columnar mounting seat (28); A support rod (60) is vertically fixedly mounted on the top surface of the mounting block (59), and a spherical body (61) slidably mounted in the spiral slide groove (62) is fixedly mounted on the top end of the support rod (60).

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