A soil sampling device for environmental geological survey and a sampling method thereof

Abstract

The present invention belongs to the technical field of soil sampling devices, and discloses a soil sampling device for environmental geological investigation and a sampling method thereof, wherein the soil sampling device for environmental geological investigation comprises a mobile device, wherein two electric linear slides are slidably arranged on the front side of the mobile device, the sliding tables of the two electric linear slides are fixedly connected with the same rectangular square plate, and a sampler is installed on the rectangular square plate; a U-shaped base is fixedly installed between the two electric linear slides, and a third rotating shaft is rotatably installed on the U-shaped base; the bottoms of the two electric linear slides are both connected with supporting cross plates, and rotating gear rings are rotatably arranged on the tops of the two supporting cross plates, and negative pressure exhaust components are respectively arranged on the two supporting cross plates, and the driving end of the negative pressure exhaust component is transmission-connected to the rotating gear ring; at least one water tank is installed on the top of the rotating gear ring, and a sprinkler head is connected to the water tank through a tough tube; the present invention can perform sampling operations on soils of different hardness.

Description

Technical Field

[0001] The invention belongs to the technical field of soil sampling devices, and in particular relates to a soil sampling device for environmental geological investigation and a sampling method thereof. Background Art

[0002] Environmental geological survey is the investigation and research of regional geological environmental conditions and environmental geological problems caused by natural geological effects and human activities. Therefore, when conducting geological surveys of the surrounding environment, it is necessary to sample the soil in the area, and the test results are used to analyze the geological conditions of the area.

[0003] When the existing soil sampling device is used to sample the soil in the area to be investigated, due to different geological conditions, the hardness and softness of the soil in each sampling area are also different. In addition, when the existing soil sampling device is used to sample hard soil, it is difficult to drill deep into the soil, which reduces the use effect, thereby increasing the sampling difficulty of the soil sampling device. At the same time, when the sampling operation is performed on the hard soil, it is easy to cause damage to the sampling equipment, thereby reducing the service life of the soil sampling device, making the existing soil sampling device have strong limitations when used. Summary of the invention

[0004] The main technical problem to be solved by the present invention is to provide a soil sampling device for environmental geological survey and a sampling method thereof, which can sample soils of different hardnesses, and can automatically rotate and spray water to moisten the soil and reduce dust, and can also clean impurities and part of the dust generated during sampling. The overall structure is simple and easy to use.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A soil sampling device for environmental geological survey comprises a mobile device, on the front side of the mobile device are two symmetrically arranged electric linear slides, a sliding table is installed on the moving end of the electric linear slide, the two sliding tables are fixedly connected to the same rectangular square plate through a bracket, and a sampler for soil sampling operation is installed on the rectangular square plate; a U-shaped base is fixedly installed at the middle position of the two electric linear slides, a third rotating shaft is rotatably installed on the U-shaped base, the bottoms of the two electric linear slides are connected to a supporting cross plate, the tops of the two supporting cross plates are provided with a plurality of guide rotating blocks, and a rotating gear ring is rotatably connected to the plurality of guide rotating blocks, negative pressure suction components are respectively provided on the two supporting cross plates, and the driving end of the negative pressure suction component is transmission-connected to the rotating gear ring; at least one water tank is installed on the top of the rotating gear ring, a tough tube is connected to the water tank, the output end of the tough tube is connected to a water spray head, and the output end of the water spray head faces the landing point of the sampler; an angle stop unit is also provided on the water tank, and the angle stop unit is used to adjust the inclination direction of the water spray head;

[0007] The third rotating shaft is connected to the rectangular square plate through a transmission rope assembly, and a transmission mechanism is arranged between the third rotating shaft and the rotating gear ring. When the rectangular square plate is lifted or lowered, the third rotating shaft is driven to rotate by the transmission rope assembly, and the third rotating shaft drives the rotating gear ring to rotate through the transmission mechanism.

[0008] The following is a further optimization of the above technical solution by the present invention:

[0009] The sampler includes a sampling barrel, a rotating motor is fixedly installed on the top of the rectangular square plate, the power output end of the rotating motor is arranged vertically downward and passes through the rectangular square plate and is fixedly connected to a rotating round block, the side of the rotating round block away from the rectangular square plate is fixedly connected to the sampling barrel, and the opening at the bottom of the sampling barrel is serrated.

[0010] Further optimization: the negative pressure exhaust assembly includes a pressure storage square box, two pressure storage square boxes are arranged on each supporting cross plate, the two pressure storage square boxes are respectively fixedly mounted on the supporting cross plate and close to the two ends thereof, the inner cavity of the pressure storage square box is installed with a filter screen, the filter screen divides the inner cavity of the pressure storage square box into a material storage area and a ventilation area, the ventilation area of ​​the pressure storage square box is slidably connected with an extrusion square plate, an air inlet valve is installed on one side of the pressure storage square box close to the sampling tube, and an air inlet square tube is connected to the air inlet valve; the filter screen and the air inlet valve are arranged parallel to the moving surface of the extrusion square plate; an air outlet valve is also installed on the outer side of the pressure storage square box, and the air outlet valve is located between the filter screen and the extrusion square plate; an air outlet circular pipe is installed on the air outlet valve, one end of the air outlet circular pipe and the air inlet square pipe are connected to the inner cavity of the pressure storage square box, and the other ends of the air outlet circular pipe and the air inlet square tube are both facing the landing point of the sampling tube.

[0011] Further optimization: A rotating shaft is respectively arranged on the supporting horizontal plate between the two pressure storage boxes, an auxiliary base plate is rotatably connected to the middle position of the rotating shaft, both ends of the auxiliary base plate are respectively fixedly mounted on two corresponding guide rotating blocks, and a rotating gear is fixedly connected to the upper end of the rotating shaft, which is meshingly connected with a rotating gear ring.

[0012] Further optimization: a rotating disc is fixedly installed at the lower end of the rotating shaft, a positioning cylinder is eccentrically installed at the bottom of the rotating disc, and a sliding frame is slidably connected to the positioning cylinder; a plurality of positioning cylinders are fixedly connected to the side of the sliding frame away from the supporting cross plate, a positioning base plate is slidably connected to the positioning cylinder, and the positioning base plate is fixedly installed on the corresponding supporting cross plate; a bent square rod is installed on both sides of the sliding frame, and the other end of the bent square rod is fixedly connected to the extrusion square plate in the corresponding pressure storage square box.

[0013] Further optimization: the transmission mechanism includes a T-shaped base plate, which is fixedly installed on any one of the electric linear slides near the lower end, a first rotating shaft is rotatably installed on the T-shaped base plate, a transmission belt assembly is arranged between the first rotating shaft and the third rotating shaft, an L-shaped base is fixedly installed at the middle position of the lower end surface of the U-shaped base, a second rotating shaft is rotatably installed on the L-shaped base, a gear assembly is arranged between the lower end of the second rotating shaft and the first rotating shaft, a linkage gear is fixedly installed on the upper end of the second rotating shaft, and the linkage gear is meshed with the rotating gear ring.

[0014] Further optimization: the transmission rope assembly includes a rope, and the tops of the two electric linear slides are commonly connected to a linkage long plate, on which a fixed pulley is installed; a fixing square seat is installed on the side of the rectangular square plate close to the mobile device; a wire tie roller is fixedly installed at the middle position of the third rotating shaft, and the rope is wrapped around the wire tie roller, and the free end of the rope is wrapped around the fixed pulley and fixedly installed on the fixing square seat.

[0015] Further optimization: a clockwork spring is sleeved on the third rotating shaft, one end of the clockwork spring is fixedly connected to the third rotating shaft, and the other end of the clockwork spring is fixedly connected to the electric linear slide.

[0016] Further optimization: the corner stop unit includes a fixing U-seat arranged on the top of the water tank, and an auxiliary connecting column is rotatably installed on the fixing U-seat, and the auxiliary connecting column is connected to the sprinkler head; two ends of the auxiliary connecting column pass through the two side surfaces of the fixing U-seat and are fixedly connected to a limiting L-plate, and an arc-shaped square rod is slidably connected to the limiting L-plate, and the arc-shaped square rod is fixedly installed on the water tank; an arc-shaped spring is sleeved on the arc-shaped square rod, one end of the arc-shaped spring is fixedly connected to the arc-shaped square rod, and the other end of the arc-shaped spring is fixedly connected to the limiting L-plate; a plurality of stop circular grooves arranged at intervals are opened on the side surface of the arc-shaped square rod away from the water tank, and a stop lock rod is connected to the limiting L-plate through an elastic component, and one end of the stop lock rod is inserted in the corresponding stop circular groove.

[0017] The present invention also provides a soil sampling method for environmental geological investigation. Based on the above-mentioned soil sampling device for environmental geological investigation, the sampling method comprises the following steps:

[0018] Step 1: When sampling, first operate the mobile device to move the sampling tube to the top of the sampling position, then slide the electric linear slide on the mobile device so that the lower end surface of the supporting horizontal plate is in contact with the ground, so as to limit the sampling tube above the sampling position;

[0019] Step 2: Start the rotary motor to drive the sampling tube to rotate, so that the sampling tube rotates to perform soil sampling operation;

[0020] Step 3: The electric linear slide is used to drive the slide table to drive the rectangular plate to move downward, and the rectangular plate drives the sampling tube to move toward the ground, and the sampling tube penetrates into the soil to perform a soil sampling operation;

[0021] Step 4: The rectangular square plate drives the fixed square seat to move synchronously when it moves downward. The movement of the fixed square seat drives the wire-laying roller to rotate through the cooperation of the rope and the fixed pulley. The wire-laying roller drives the third rotating shaft to rotate. At this time, the spring spring is in a power storage state; the third rotating shaft drives the first rotating shaft to rotate through the transmission belt assembly, the first rotating shaft drives the second rotating shaft to rotate through the gear assembly, and the second rotating shaft rotates through the linkage gear meshing rotating gear ring;

[0022] Step 5: The water in the water tank is transported to the water spray head through the flexible pipe and sprayed out. The rotating gear ring drives the water tank to rotate, and then the water spray head rotates around the sampling position of the sampling tube to spray water, so as to moisten the soil and reduce dust.

[0023] Step 6: The rotating gear ring rotates to engage the rotating gear to drive the rotating shaft and the rotating disc to rotate, and the rotating disc drives the positioning cylinder to rotate eccentrically, so that the positioning cylinder moves back and forth in the sliding frame. At this time, the sliding frame is supported by the cooperation of the positioning cylinder and the positioning base plate to move back and forth, thereby driving the bending square rod to move back and forth, and the bending square rod drives the extrusion square plate to move back and forth in the pressure storage square box; the air outlet round pipe and the air inlet square pipe are alternately blown and sucked to realize the cleaning operation of impurities and some dust generated during sampling;

[0024] Step 7. When the sampling tube reaches the required depth in the soil, the sampling is completed. At this time, the electric linear slide is started to reset it. The electric linear slide drives the rectangular plate to move the sampling tube upward and reset it. Then, the soil is taken out from the sampling tube to obtain the soil sample.

[0025] The present invention adopts the above technical solution and has the following beneficial effects:

[0026] 1. The electric linear slide in the present invention drives the rectangular square plate to move up and down through the sliding table, thereby adjusting the height position of the sampling tube, and when the sampling tube descends, the sampling tube can drill into the deep soil to realize the sampling operation of soil at different depths; the rotation motor is started to drive the sampling tube to rotate, and the serrated structure at the bottom opening of the sampling tube can easily break the soil, so that the sampling tube can easily drill into the soil to complete the sampling operation of the soil.

[0027] 2. In the present invention, the linkage gear rotates to engage the rotating gear ring, and the rotation of the rotating gear ring can drive the water tank to rotate, so that the water spray head on the water tank rotates around the sampling tube, which is used to sprinkle water around the soil in the sampling area, thereby making the soil around the sampling point evenly moistened, so that the soil can be softened, and the use effect is improved. It can also avoid the phenomenon that inconsistent force on the sampling tube when drilling into it due to inconsistent watering of the soil, and the sampling tube is damaged, which further improves the service life of the sampling device. The watering operation can reduce the dust phenomenon during the sampling operation, thereby improving the sampling effect of the sampling device.

[0028] 3. In the present invention, the rectangular square plate drives the fixing square seat to move synchronously when it moves downward. The movement of the fixing square seat drives the third rotating shaft to rotate through the transmission rope assembly. The third rotating shaft drives the first rotating shaft to rotate through the transmission belt assembly. The first rotating shaft drives the second rotating shaft to rotate through the gear assembly. The rotation of the second rotating shaft drives the linkage gear to engage the rotating gear ring to rotate, which is convenient to use, and can convert the downward moving force of the rectangular square plate into the driving force to drive the rotating gear ring. The overall structure is simple and easy to use.

[0029] 4. In the present invention, the rotating gear ring rotates the meshing rotating gear to drive the negative pressure exhaust component to work, so that the air outlet circular tube and the air inlet square tube can alternately perform blowing and suction operations. When the air outlet circular tube is performing the blowing operation, the impurities and dust generated during sampling can be blown away; when the air inlet square tube is performing the suction operation, the impurities and part of the dust generated during sampling can be sucked into the pressure storage square box, thereby realizing the cleaning operation of the impurities and part of the dust, and improving the use effect.

[0030] 5. The present invention adopts the above technical solution, which is ingenious in conception and reasonable in structure. It can sample soils of different hardness, and can automatically rotate and spray water to moisten the soil and reduce dust. It can also clean impurities and some dust generated during sampling. The overall structure is simple, easy to use, and can improve the use effect.

[0031] The present invention is further described below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0033] Figure 2 Schematic diagram of the structure of the transmission mechanism in Example 1 of the present invention;

[0034] Figure 3 is a cross-sectional view of a water tank in Embodiment 1 of the present invention;

[0035] Figure 4 Schematic diagram of the structure of the sampler in Example 1 of the present invention;

[0036] Figure 5 This is a schematic structural diagram of another viewing angle of the overall structure in Embodiment 1 of the present invention;

[0037] Figure 6 This is a schematic diagram of the structure of the negative pressure exhaust assembly in Example 1 of the present invention;

[0038] Figure 7 Schematic diagram of the structure of the corner stop unit in Embodiment 1 of the present invention;

[0039] Figure 8 is a cross-sectional view of the pressure storage box in Example 1 of the present invention;

[0040] Fig. 9 It is a schematic diagram of the structure at the position of the rotating gear ring in Example 1 of the present invention;

[0041] Fig.10 This is a schematic diagram of the structure at the position of the rotating gear ring in Example 2 of the present invention.

[0042] In the figure: 1-mobile equipment; 2-sampling tube; 3-electric linear slide; 4-support horizontal plate; 5-linked long plate; 6-fixed pulley; 7-guide rotating block; 8-rotating gear ring; 9-rotating gear; 10-water tank; 11-tough tube; 12-sprinkler head; 13-sliding table; 14-rectangular square plate; 15-rotating motor; 16-rotating round block; 17-fixed square seat; 18-rotating shaft; 19-auxiliary base plate; 20-rotating disc; 21-positioning cylinder; 22-sliding frame; 23-positioning cylinder; 24-positioning base plate; 25-bending square rod; 26-extrusion square plate; 27-pressure storage square box; 28-intake valve; 29-intake square pipe; 30-filter; 31-exhaust valve; 32-exhaust round pipe; 33-T-type Base plate; 34-first rotating shaft; 35-driving bevel gear; 36-driven bevel gear; 37-second rotating shaft; 38-L-type base; 39-U-type base; 40-linkage gear; 41-driven pulley; 42-rope; 43-beam roller; 44-third rotating shaft; 45-driving pulley; 46-transmission belt; 47-spring spring; 48-retaining U seat; 49-auxiliary connecting column; 50-limiting L plate; 51-arc-shaped square rod; 52-limiting square plate; 53-limiting base plate; 54-arc-shaped spring; 55-stopping circular groove; 56-limiting T plate; 57-guide cylinder; 58-guide horizontal plate; 59-stopping locking rod; 60-stopping spring; 61-stopping limiting plate; 100-driving gear; 101-driving motor. DETAILED DESCRIPTION

[0043] Example 1: Figure 1-9 As shown, a soil sampling device for environmental geological investigation includes a mobile device 1, on the front side of the mobile device 1, two symmetrically arranged electric linear slides 3 are slidably arranged, a sliding table 13 is installed on the moving end of the electric linear slide 3, and the two sliding tables 13 are fixedly connected to the same rectangular square plate 14 through a bracket, and a sampler for soil sampling operation is installed on the rectangular square plate 14; a U-shaped base 39 is fixedly installed at the middle position of the two electric linear slides 3, and a third rotating shaft 44 is rotatably installed on the U-shaped base 39, and the bottoms of the two electric linear slides 3 are connected to support A horizontal plate 4, and the tops of the two supporting horizontal plates 4 are each provided with a plurality of guide rotating blocks 7, and a rotating gear ring 8 is connected to the plurality of guide rotating blocks 7 for common rotation. A negative pressure suction component is also provided on the two supporting horizontal plates 4, and a driving end of the negative pressure suction component is transmission-connected to the rotating gear ring 8; at least one water tank 10 is installed on the top of the rotating gear ring 8, and a flexible tube 11 is connected to the water tank 10, and a water spray head 12 is connected to the output end of the flexible tube 11, and the output end of the water spray head 12 faces the landing point of the sampler; an angle stop unit is also provided on the water tank 10, and the angle stop unit is used to adjust the inclination direction of the water spray head 12.

[0044] Designed in this way, the electric linear slide 3 is used to drive the sliding table 13 to move up and down. At this time, the two electric linear slides 3 work synchronously to drive the rectangular square plate 14 to move up and down through the sliding table 13 and the bracket, thereby adjusting the height position of the rectangular square plate 14, and then conveniently driving the sampler to move up and down to realize the sampling operation of the soil.

[0045] The rotation of the rotating gear ring 8 drives the negative pressure suction component to work. The negative pressure suction component is used to blow away and suck the dust generated during the sampling operation, which is convenient to use. The water source can be stored in the water tank 10. If the soil in the required sampling area is relatively hard, the water output by the water tank 10 is sprayed out through the water spray head 12 to moisten and soften the soil, which is convenient for drilling and sampling operations. The water sprayed by the water spray head 12 can also reduce the dust generated during the sampling operation, thereby improving the use effect.

[0046] In this embodiment, the tilt direction of the water spray head 12 can be adjusted by operating the corner stop unit, which is convenient for use, and the water spraying angle of the water spray head 12 can be adjusted to ensure the uniformity of the water spraying operation and improve the use effect.

[0047] The third rotating shaft 44 is connected to the rectangular square plate 14 via a transmission rope assembly, and a transmission mechanism is provided between the third rotating shaft 44 and the rotating gear ring 8 .

[0048] The electric linear slide 3 drives the rectangular plate 14 to move up and down through the sliding table 13. At this time, the rectangular plate 14 drives the third rotating shaft 44 to rotate through the transmission rope assembly. The rotation of the third rotating shaft 44 drives the rotating gear ring 8 to rotate through the transmission mechanism, so that the rotation of the rotating gear ring 8 can be automated.

[0049] The sampler includes a sampling tube 2, a rotating motor 15 is fixedly installed on the top of a rectangular square plate 14 by fastening bolts, a power output end of the rotating motor 15 is arranged vertically downward and passes through the rectangular square plate 14 and is fixedly connected to a rotating round block 16, and the rotating round block 16 is rotatably set at the bottom of the rectangular square plate 14.

[0050] The rotating block 16 is fixedly connected to the sampling tube 2 on one side away from the rectangular plate 14. The axis of the sampling tube 2 is coaxially arranged with the axis of the rotating gear ring 8, the axis of the power output end of the rotating motor 15 and the axis of the rotating block 16. The opening at the bottom of the sampling tube 2 is serrated.

[0051] In this embodiment, the sampling tube 2 and the rotating round block 16 are detachably fixedly connected, so that sampling tubes 2 of different lengths can be easily replaced.

[0052] With this design, the user can operate the mobile device 1 to move the sampling tube 2 to different areas to perform sampling operations on the soil, thereby realizing the investigation of the environment in different regions; when performing the sampling operation, the electric linear slide 3 is first made to slide on the mobile device 1 to adjust the height position of the electric linear slide 3, so that the lower end surface of the supporting cross plate 4 is kept in contact with the ground, and then the sampling tube 2 is limited to the current position for sampling operations, so as to avoid the sampling tube 2 shaking due to the shaking of the mobile device 1 during the sampling operation, resulting in the sampling accuracy cannot be guaranteed, thereby improving the accuracy of the sampling tube 2 during sampling.

[0053] The electric linear slide 3 drives the rectangular plate 14 to move downward through the slide table 13, and then drives the sampling tube 2 to move downward. At this time, the rotating motor 15 works to drive the sampling tube 2 to rotate, so as to realize the soil sampling operation.

[0054] Moreover, by replacing sampling tubes 2 of different lengths, sampling operations can be performed on soils of different depths, thereby reducing the limitations of the soil sampling device during use. The soil sampling device can select sampling tubes 2 of appropriate lengths according to different actual usage conditions to perform sampling operations on soils of different depths, thereby enriching the sampling data and further improving the sampling effect of the soil sampling device.

[0055] The opening at the bottom of the sampling tube 2 is serrated, and the serrations can facilitate the sampling tube 2 to drill into the soil during rotation, and can better break the soil, thereby completing the soil sampling operation.

[0056] In this embodiment, in order to ensure that the water in the water tank 10 is transported to the sprinkler head 12 through the flexible pipe 11 for spraying, a water pump is installed in the water tank 10, and the water pump is used to suck the water in the water tank 10 and transport it to the sprinkler head 12 through the flexible pipe 11.

[0057] In addition to the present embodiment, the water tank 10 is provided with a water inlet, and a sealing cover is sealed at the water inlet. Water is injected into the water tank 10 through the water inlet. When a water pump is not needed, an air injection valve can be installed on the water tank 10. A switch valve is connected in series on the flexible tube 11. Before use, high-pressure gas is injected into the water tank 10 through the air injection valve to create high pressure in the water tank 10. When the switch valve is opened, the pressure of the high-pressure air drives the water in the water tank 10 to be transported to the sprinkler head 12 through the flexible tube 11 for spraying.

[0058] In this embodiment, the water inside the water tank 10 is sprayed out through the sprinkler head 12 and sprayed around the area where the sampling tube 2 is about to land. If the soil in the required sampling area is relatively hard, the water can soften the soil, allowing the sampling tube 2 to drill smoothly into and penetrate deep into the soil to perform soil sampling operations, thereby reducing the sampling difficulty of the sampling tube 2 and avoiding damage to the sampling tube 2 due to excessive hardness of the soil surface, thereby improving the service life and sampling effect of the soil sampling device. At the same time, the sprayed water can suppress the dust generated during the sampling process, reduce the flying of dust, and improve the use effect of the soil sampling device.

[0059] The negative pressure exhaust assembly includes a pressure storage box 27, two pressure storage boxes 27 are arranged on each supporting cross plate 4, the two pressure storage boxes 27 are respectively fixedly installed on the supporting cross plate 4 and close to the two ends thereof, the inner cavity of the pressure storage box 27 is installed with a filter 30, the filter 30 divides the inner cavity of the pressure storage box 27 into a material storage area and a ventilation area, the material storage area is arranged on the side close to the sampling tube 2, and the ventilation area is arranged on the side away from the sampling tube 2.

[0060] An extrusion square plate 26 is slidably connected in the ventilation area of ​​the pressure storage square box 27, and an air intake valve 28 is installed on the side surface of the pressure storage square box 27 close to the sampling tube 2, and an air intake square pipe 29 is connected to the air intake valve 28; the filter 30 and the air intake valve 28 are arranged parallel to the moving surface of the extrusion square plate 26.

[0061] An air outlet valve 31 is also installed on the outer side of the pressure storage box 27 . The air outlet valve 31 is located between the filter screen 30 and the extrusion square plate 26 . An air outlet circular pipe 32 is installed on the air outlet valve 31 .

[0062] One end of the air outlet circular tube 32 and the air inlet square tube 29 are both connected to the inner cavity of the pressure storage square box 27, and the other end of the air outlet circular tube 32 and the air inlet square tube 29 are both directed toward the landing point of the sampling tube 2.

[0063] The supporting horizontal plate 4 is provided with a rotating shaft 18 between the two pressure storage boxes 27. The rotating shaft 18 is arranged vertically, and the axis of the rotating shaft 18 is arranged parallel to the axis of the rotating gear ring 8. An auxiliary base plate 19 is rotatably connected to the middle position of the rotating shaft 18, and both ends of the auxiliary base plate 19 are fixedly mounted on the corresponding two guide rotating blocks 7.

[0064] In this embodiment, the rotating shaft 18 and the auxiliary base plate 19 are rotatably connected via a bearing, and the auxiliary base plate 19 is used to support the rotating shaft 18 to rotate, which is convenient for use.

[0065] The upper end of the rotating shaft 18 is fixedly connected with a rotating gear 9, which is meshed with a rotating gear ring 8; the rotating gear ring 8 rotates to drive the rotating gear 9 to rotate through the meshing of the teeth, and the rotating gear 9 drives the rotating shaft 18 to rotate.

[0066] A rotating disc 20 is fixedly mounted on the lower end of the rotating shaft 18 , and a positioning column 21 is eccentrically mounted on the bottom of the rotating disc 20 . The axis of the positioning column 21 is parallel to the axis of the rotating shaft 18 .

[0067] A sliding frame 22 is slidably connected to the positioning column 21 ; a plurality of positioning cylinders 23 are fixedly connected to one side of the sliding frame 22 away from the supporting horizontal plate 4 , and the positioning cylinders 23 are arranged along the moving direction of the sliding frame 22 .

[0068] In this embodiment, a square groove is formed on the sliding frame 22 , and one end of the positioning column 21 away from the rotating disk 20 is slidably installed in the square groove.

[0069] The positioning cylinder 23 is slidably connected with a positioning base plate 24 , and the positioning base plate 24 is fixedly mounted on the corresponding supporting horizontal plate 4 .

[0070] With this design, the positioning base plate 24 can support the positioning cylinder 23 to slide, which is convenient for use. The sliding frame 22 is fixedly connected to the positioning cylinder 23, and there are multiple positioning cylinders 23. The sliding frame 22 can be slidably installed on the corresponding supporting cross plate 4 through the cooperation of the positioning cylinder 23 and the positioning base plate 24, which is convenient for assembly and installation.

[0071] A bent square rod 25 is installed on both sides of the sliding frame 22 , and the other end of the bent square rod 25 is fixedly connected to the extruded square plate 26 in the corresponding pressure storage square box 27 .

[0072] With such a design, when the rotating gear ring 8 rotates, it drives the two rotating gears 9 to rotate through the meshing of the teeth. The rotating gear 9 drives the rotating disk 20 to rotate through the rotating shaft 18. The rotating disk 20 drives the positioning column 21 thereon to rotate eccentrically, so that the positioning column 21 reciprocates in the sliding frame 22. At this time, the cooperation between the positioning cylinder 23 and the positioning base plate 24 can support the sliding frame 22 to reciprocate, thereby driving the bent square rod 25 to reciprocate.

[0073] At this time, the bent square rod 25 drives the extruded square plate 26 to move back and forth in the pressure storage square box 27; when the extruded square plate 26 moves toward the direction close to the filter screen 30, the outlet valve 31 is in an open state, and the inlet valve 28 is in a closed state, so that the gas inside the pressure storage square box 27 can only be discharged through the outlet valve 31 and the outlet circular pipe 32. The gas discharged from the outlet circular pipe 32 acts on the sampling point of the sampling tube 2, which is used to blow away impurities and dust adhered to the sampling area, avoid impurities accumulating around the sampling point of the sampling tube 2, causing contamination of the sample, and improving the sampling accuracy of the soil sampling device.

[0074] When the bent square rod 25 resets and drives the extrusion square plate 26 to move away from the filter 30, the outlet valve 31 is in a closed state, and the inlet valve 28 is in an open state, so that suction is generated inside the pressure storage square box 27, and under the action of the inlet square tube 29, it is used to suck impurities scattered from the outside and accumulated around the sampling point into the pressure storage square box 27, so as to absorb and clean the impurities and some dust generated from the outside and during sampling, so as to avoid the presence of these impurities affecting the sampling effect.

[0075] In this embodiment, the above operation enables the air inlet square tube 29 to continuously absorb dust generated by the sampling tube 2 during the sampling process, and the air outlet circular tube 32 continuously blows wind toward the sampling location to blow away the adhered dust, making it easier for the air inlet square tube 29 to absorb it.

[0076] In this embodiment, when external dust is sucked into the pressure storage box 27, it is blocked by the filter 30 so that the dust can only be stored in the material storage area, preventing the dust from entering the ventilation area and affecting the normal movement of the extrusion square plate 26, thereby improving the use effect of the soil sampling device.

[0077] In this embodiment, a slag discharge port (not shown in the figure) is opened on the lower bottom surface of the pressure storage box 27, and a packaging plate is removably installed at the slag discharge port. The slag discharge port can be opened by removing the packaging plate, so that impurities in the pressure storage box 27 can be easily discharged, which is convenient for use.

[0078] The transmission mechanism includes a T-shaped substrate 33, which is fixedly mounted on any one of the electric linear slides 3 near the lower end. A first rotating shaft 34 is rotatably mounted on the T-shaped substrate 33. The axis of the first rotating shaft 34 is parallel to the axis of the third rotating shaft 44. A transmission belt assembly is arranged between the first rotating shaft 34 and the third rotating shaft 44.

[0079] The transmission belt assembly includes a driven pulley 41 fixedly mounted on the outer surface of the first rotating shaft 34, a driving pulley 45 fixedly mounted on the outer surface of the third rotating shaft 44, a transmission belt 46 is sleeved between the driving pulley 45 and the driven pulley 41, and the driving pulley 45 is connected to the driven pulley 41 through the transmission belt 46.

[0080] The rotation of the third rotating shaft 44 drives the driving pulley 45 to rotate, and the rotation of the driving pulley 45 drives the driven pulley 41 and the first rotating shaft 34 to rotate through the transmission action of the transmission belt 46 .

[0081] In addition to this embodiment, the driven pulley 41 and the driving pulley 45 may also be replaced by synchronous pulleys or sprockets, and the transmission belt 46 may also be replaced by a synchronous belt or a chain.

[0082] An L-shaped base 38 is fixedly installed at the middle position of the lower end surface of the U-shaped base 39, and a second rotating shaft 37 is rotatably installed on the L-shaped base 38. A gear assembly is arranged between the lower end of the second rotating shaft 37 and the first rotating shaft 34, and a linkage gear 40 is fixedly installed on the upper end of the second rotating shaft 37, and the linkage gear 40 is meshed and connected with the rotating gear ring 8.

[0083] In this embodiment, the lower end of the second rotating shaft 37 is located below the L-shaped base 38, and the upper end of the second rotating shaft 37 is located above the L-shaped base 38. The second rotating shaft 37 and the L-shaped base 38 are rotatably connected via a bearing, and the L-shaped base 38 is used to support the second rotating shaft 37 for rotation.

[0084] The gear assembly includes a driving bevel gear 35 , which is fixedly mounted on one end of the first rotating shaft 34 away from the T-shaped base plate 33 . A driven bevel gear 36 is fixedly mounted on the lower end of the second rotating shaft 37 , and the driven bevel gear 36 is meshedly connected with the driving bevel gear 35 .

[0085] In addition to this embodiment, the gear assembly may also use a worm wheel and a worm that mesh with each other, and the driven bevel gear 36 may be replaced by the worm wheel; and the driving bevel gear 35 may be replaced by the worm.

[0086] The transmission rope assembly includes a rope 42, and the tops of the two electric linear slides 3 are commonly connected to a linkage long plate 5, on which a fixed pulley 6 is installed; a retaining square seat 17 is installed on the side of the rectangular square plate 14 close to the mobile device 1; a wire bundle roller 43 is fixedly installed at the middle position of the third rotating shaft 44.

[0087] The rope 42 is wound around the wire-binding roller 43 , and the free end of the rope 42 passes around the fixed pulley 6 and is fixedly mounted on the retaining square seat 17 .

[0088] The third rotating shaft 44 is sleeved with a spring 47 , one end of the spring 47 is fixedly connected to the third rotating shaft 44 , and the other end of the spring 47 is fixedly connected to the electric linear slide 3 .

[0089] Designed in this way, the electric linear slide 3 works by driving the rectangular plate 14 to move downward through the sliding table 13. At this time, the rectangular plate 14 drives the sampling tube 2 to move downward. At this time, the rectangular plate 14 drives the fixing seat 17 to move synchronously. The movement of the fixing seat 17 drives the wire-releasing roller 43 to rotate through the cooperation of the rope 42 and the fixed pulley 6, and then drives the third rotating shaft 44 to rotate. At this time, the clockwork spring 47 is in a power storage state.

[0090] When the electric linear slide 3 drives the rectangular plate 14 to move upward through the slide table 13 , the spring spring 47 outputs elastic force to drive the third rotating shaft 44 and the wire-bearing roller 43 to rotate and wind up the rope 42 .

[0091] The third rotating shaft 44 drives the driving pulley 45 to rotate, and the driving pulley 45 drives the driven pulley 41 to rotate through the transmission action of the transmission belt 46. The driven pulley 41 drives the driving bevel gear 35 to rotate through the first rotating shaft 34. The driving bevel gear 35 drives the driven bevel gear 36 to rotate through the meshing of the teeth. The driven bevel gear 36 drives the linkage gear 40 to rotate through the second rotating shaft 37. The rotation of the linkage gear 40 can drive the rotating gear ring 8 to rotate through the meshing of the teeth.

[0092] At this time, the cooperation of a plurality of guide rotating blocks 7 can support the rotating gear ring 8 to rotate, and the rotating gear ring 8 drives the water tank 10 to rotate and drives the negative pressure exhaust assembly to work.

[0093] The corner stop unit includes a fixed U-seat 48 arranged on the top of the water tank 10, and an auxiliary connecting column 49 is rotatably installed on the fixed U-seat 48, and the auxiliary connecting column 49 is connected to the sprinkler head 12; the two ends of the auxiliary connecting column 49 pass through the two side surfaces of the fixed U-seat 48 and are fixedly connected to a limiting L-plate 50, and an arc-shaped square rod 51 is slidably connected to the limiting L-plate 50.

[0094] One end of the arc-shaped square rod 51 is connected to the limiting square plate 52, and the other end of the arc-shaped square rod 51 is connected to the limiting substrate 53. The limiting substrate 53 is fixedly mounted on the water tank 10. The arc-shaped square rod 51 is fixedly mounted on the water tank 10 through the limiting substrate 53, which is convenient for assembly and installation.

[0095] The arc-shaped square rod 51 is sleeved with an arc-shaped spring 54 , one end of the arc-shaped spring 54 is fixedly connected to the connection between the arc-shaped square rod 51 and the limiting square plate 52 , and the other end of the arc-shaped spring 54 is fixedly connected to the limiting L-plate 50 .

[0096] A plurality of stop circular grooves 55 are provided on one side surface of the arc-shaped square rod 51 away from the water tank 10. The stop circular grooves 55 are arranged at intervals along the direction of the arc-shaped square rod 51. The axis of the arc-shaped square rod 51 and the axis of the auxiliary connecting column 49 are coaxially arranged. A stop lock rod 59 is connected to the limiting L plate 50 through an elastic component, and one end of the stop lock rod 59 is inserted into the corresponding stop circular groove 55.

[0097] The elastic component includes a limiting T-plate 56 fixedly mounted on the side of the limiting L-plate 50 away from the auxiliary connecting column 49, a guide cylinder 57 is mounted on the limiting T-plate 56, a guide cross plate 58 is slidably connected to the guide cylinder 57, and the side of the guide cross plate 58 away from the guide cylinder 57 is fixedly connected to the stop lock rod 59.

[0098] The guide cylinder 57 is sleeved with a stop spring 60 , one end of which is fixedly connected to the guide cross plate 58 , and the other end of the stop spring 60 is fixedly connected to a stop limit plate 61 , which is fixedly mounted on one end of the guide cylinder 57 away from the limit T plate 56 .

[0099] With this design, the guide cross plate 58 is pulled outward to move within the upper limit position of the guide cylinder 57, thereby compressing the stop spring 60, so that the stop lock rod 59 on the guide cross plate 58 is no longer connected to the stop groove 55, thereby releasing the limit setting of the arc-shaped square rod 51, and the water head 12 can be driven to swing by rotating the auxiliary connecting column 49 to adjust the inclination angle of the water head 12, so that the water sprayed by the water head 12 can be evenly dropped around the sampling point of the sampling tube 2, thereby improving the operating range of the water head 12.

[0100] When the water sprinkler 12 is rotated, the limiting L plate 50 on the auxiliary connecting column 49 is limitedly rotated on the arc-shaped square rod 51, so that the arc-shaped spring 54 is in a buffering state, and can limit the rotation of the water sprinkler 12 to avoid shaking of the water sprinkler 12 during rotation, thereby improving the stability of the water sprinkler 12 during use, enabling the water sprinkler 12 to achieve precise water spraying and improve the use effect.

[0101] When the working angle of the water sprinkler 12 is adjusted, the guide cross plate 58 is loosened to enable the stop lock rod 59 to reset and move under the reset force of the stop spring 60, so that the stop lock rod 59 is connected to the corresponding stop circular groove 55, thereby limiting the arc-shaped square rod 51 at the current position, avoiding the water sprinkler 12 from shaking during use, improving the water spraying effect of the water sprinkler 12, and ensuring the water spraying accuracy of the water sprinkler 12.

[0102] When the arc-shaped square rod 51 is limited, the arc-shaped spring 54 cannot be reset. At this time, the elastic force brought by the arc-shaped spring 54 acts on the limiting L-plate 50, which is used to strengthen the connection strength between the stop circular groove 55 and the stop lock rod 59, further avoiding the movement of the stop lock rod 59 due to non-human factors during use, thereby improving the use effect.

[0103] In this embodiment, the mobile device 1 is a prior art and can perform automatic moving operations, and a lifting component is installed in the mobile device 1. The working end of the lifting component is connected to the electric linear slide 3, and the lifting component is used to drive the electric linear slide 3 to move up and down.

[0104] In this embodiment, the lifting component is a prior art, and can adopt one of a driving cylinder, a hydraulic cylinder, and an electric telescopic rod, and the lifting component is used to drive the electric linear slide 3 to move up and down.

[0105] The present invention also provides a soil sampling method for environmental geological investigation. Based on the above-mentioned soil sampling device for environmental geological investigation, the sampling method comprises the following steps:

[0106] Step 1. When sampling, first operate the mobile device 1 to move the sampling tube 2 to above the sampling position point, and then slide the electric linear slide 3 on the mobile device 1 to adjust the height position of the electric linear slide 3, so that the lower end surface of the supporting cross plate 4 remains in contact with the ground, thereby limiting the sampling tube 2 above the sampling position point.

[0107] In the step 1, a lifting component is installed in the mobile device 1, and the lifting component is used to drive the electric linear slide 3 to move up and down, so that the lifting and moving of the electric linear slide 3 is automated, and further used to adjust the height position of the electric linear slide 3.

[0108] Step 2: Then start the rotating motor 15. The rotating motor 15 outputs rotating power and drives the sampling tube 2 to rotate through the rotating ball 16. The rotation of the sampling tube 2 is used to perform a soil sampling operation.

[0109] Step 3: The electric linear slide 3 is used to drive the sliding table 13 to drive the rectangular plate 14 to move downward, and the rectangular plate 14 drives the sampling tube 2 to move toward the ground. The sampling tube 2 can penetrate into the soil to perform soil sampling operations.

[0110] Step 4. The rectangular plate 14 drives the fixing seat 17 to move synchronously when it moves downward. The movement of the fixing seat 17 drives the wire-releasing roller 43 to rotate through the cooperation of the rope 42 and the fixed pulley 6. The wire-releasing roller 43 drives the third rotating shaft 44 to rotate. At this time, the clockwork spring 47 is in a power storage state; the third rotating shaft 44 drives the first rotating shaft 34 to rotate through the transmission belt assembly, and the first rotating shaft 34 drives the second rotating shaft 37 to rotate through the gear assembly. The rotation of the second rotating shaft 37 rotates through the linkage gear 40 meshing with the rotating gear ring 8.

[0111] In step 4, the working process of the transmission belt assembly is as follows: the third rotating shaft 44 drives the active pulley 45 to rotate, the active pulley 45 drives the driven pulley 41 to rotate through the transmission action of the transmission belt 46, and the driven pulley 41 drives the first rotating shaft 34 to rotate.

[0112] In step 4, the working process of the gear assembly is as follows: the first rotating shaft 34 rotates to drive the active bevel gear 35 to rotate, the active bevel gear 35 drives the driven bevel gear 36 to rotate through the meshing of the teeth, and the driven bevel gear 36 drives the second rotating shaft 37 to rotate.

[0113] Step 5. The water in the water tank 10 is transported to the water spray head 12 through the flexible tube 11 and sprayed out. The rotating gear ring 8 drives the water tank 10 to rotate, and then the water spray head 12 rotates around the landing point of the sampling tube 2 to spray water, thereby moistening the soil and reducing dust.

[0114] Step six, the rotating gear ring 8 rotates to engage the rotating gear 9 to drive the rotating shaft 18 and the rotating disk 20 to rotate, and the rotating disk 20 drives the positioning cylinder 21 to rotate eccentrically, so that the positioning cylinder 21 moves back and forth in the sliding frame 22. At this time, the cooperation between the positioning cylinder 23 and the positioning base plate 24 can support the sliding frame 22 to move back and forth, thereby driving the bent square rod 25 to move back and forth, and the bent square rod 25 drives the extrusion square plate 26 to move back and forth in the pressure storage square box 27; the air outlet circular tube 32 and the air inlet square tube 29 are alternately blown and sucked to realize the cleaning operation of impurities and part of the dust generated during sampling.

[0115] In step six, when the extrusion square plate 26 moves toward the filter screen 30, the air outlet valve 31 is in an open state, and the air inlet valve 28 is in a closed state, so that the gas inside the pressure storage box 27 can only be discharged through the air outlet valve 31 and the air outlet circular pipe 32. At this time, the air outlet circular pipe 32 performs a blowing operation to blow away the impurities and dust generated during sampling.

[0116] In the step six, when the bent square rod 25 resets and drives the extrusion square plate 26 to move away from the filter 30, the outlet valve 31 is in a closed state, and the inlet valve 28 is in an open state, so that suction is generated inside the pressure storage square box 27. At this time, the inlet square tube 29 performs an air suction operation to suck the impurities and part of the dust generated during sampling into the pressure storage square box 27, so that the impurities and part of the dust generated during sampling can be cleaned in time, thereby improving the use effect.

[0117] Step 7. When the sampling tube 2 penetrates the required depth into the soil, it indicates that the sampling is completed. At this time, the electric linear slide 3 is started to reset it. The electric linear slide 3 drives the rectangular square plate 14 to drive the sampling tube 2 to move upward and reset it. Then, the soil in the sampling tube 2 is taken out to obtain the soil sample.

[0118] Example 2: Fig.10 As shown: In the present embodiment 2, an electromagnetic clutch (not shown in the figure) is provided at the connection between the center hole of the linkage gear 40 and the second rotating shaft 37, and the electromagnetic clutch is used to control whether the linkage gear 40 and the second rotating shaft 37 are in transmission connection.

[0119] When the electromagnetic clutch is disconnected, the second rotating shaft 37 and the linkage gear 40 are no longer in transmission connection. At this time, the second rotating shaft 37 cannot drive the linkage gear 40 to rotate, and the linkage gear 40 cannot drive the second rotating shaft 37 to rotate.

[0120] A driving gear 100 is provided on one side of the rotating gear ring 8, and the driving gear 100 is transmission-connected to the rotating gear ring 8. A driving motor 101 is coaxially arranged below the driving gear 100, and a power output end of the driving motor 101 is fixedly connected to the driving gear 100. The driving motor 101 can be fixedly mounted on the supporting cross plate 4 through a supporting frame.

[0121] With this design, when it is necessary to use the drive motor 101 to drive the rotating gear ring 8 to rotate, the electromagnetic clutch is first controlled to work and disconnected. At this time, the second shaft 37 and the linkage gear 40 are no longer in transmission connection, and the drive motor 101 works to output rotational power to drive the drive gear 100 to rotate. The drive gear 100 is meshed and connected with the rotating gear ring 8, and then the drive gear 100 rotates to drive the rotating gear ring 8 to rotate, which is convenient to use.

[0122] In addition to this embodiment, the driving motor 101 can also be fixedly installed on the electric linear slide 3 or the L-shaped base 38 by using a support frame.

[0123] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A soil sampling device for environmental geological survey, comprising a mobile device (1), characterized in that: Two symmetrically arranged electric linear slides (3) are slidably arranged on the front side of the mobile device (1); a sliding table (13) is installed on the moving end of the electric linear slide (3); the two sliding tables (13) are fixedly connected to the same rectangular square plate (14) through a bracket; a sampler for sampling soil is installed on the rectangular square plate (14); a U-shaped base (39) is fixedly installed at the middle position of the two electric linear slides (3); a third rotating shaft (44) is rotatably installed on the U-shaped base (39); the bottoms of the two electric linear slides (3) are connected to a supporting cross plate (4); the tops of the two supporting cross plates (4) are A plurality of guide rotating blocks (7) are provided, and a rotating gear ring (8) is connected to the plurality of guide rotating blocks (7) for common rotation. Negative pressure suction components are respectively provided on the two supporting horizontal plates (4), and the driving end of the negative pressure suction component is transmission-connected to the rotating gear ring (8); at least one water tank (10) is installed on the top of the rotating gear ring (8), and a flexible tube (11) is connected to the water tank (10), and the output end of the flexible tube (11) is connected to a water spray head (12), and the output end of the water spray head (12) faces the landing point of the sampler; an angle stop unit is also provided on the water tank (10), and the angle stop unit is used to adjust the inclination direction of the water spray head (12); The third rotating shaft (44) and the rectangular square plate (14) are connected to each other via a transmission rope assembly, and a transmission mechanism is provided between the third rotating shaft (44) and the rotating gear ring (8). When the rectangular square plate (14) is lifted or lowered, the third rotating shaft (44) is driven to rotate via the transmission rope assembly, and the third rotating shaft (44) drives the rotating gear ring (8) to rotate via the transmission mechanism.

2. A soil sampling device for environmental geological investigation according to claim 1, characterized in that: The sampler comprises a sampling barrel (2), a rotating motor (15) is fixedly mounted on the top of a rectangular square plate (14), a power output end of the rotating motor (15) is arranged vertically downward and passes through the rectangular square plate (14), and is fixedly connected to a rotating round block (16), a side of the rotating round block (16) away from the rectangular square plate (14) is fixedly connected to the sampling barrel (2), and an opening at the bottom of the sampling barrel (2) is serrated.

3. A soil sampling device for environmental geological investigation according to claim 2, characterized in that: The negative pressure exhaust assembly comprises a pressure storage box (27), two pressure storage boxes (27) are arranged on each supporting transverse plate (4), the two pressure storage boxes (27) are respectively fixedly mounted on the supporting transverse plate (4) and close to the two ends thereof, a filter screen (30) is installed in the inner cavity of the pressure storage box (27), the filter screen (30) divides the inner cavity of the pressure storage box (27) into a material storage area and a ventilation area, an extrusion square plate (26) is slidably connected in the ventilation area of ​​the pressure storage box (27), an air intake valve (28) is installed on a side surface of the pressure storage box (27) close to the sampling tube (2), and the air intake valve (28) An air intake square tube (29) is connected to the pressure storage box (28); the filter screen (30) and the air intake valve (28) are arranged in parallel with the moving surface of the extrusion square plate (26); an air outlet valve (31) is also installed on the outer surface of the pressure storage box (27), and the air outlet valve (31) is located between the filter screen (30) and the extrusion square plate (26); an air outlet circular tube (32) is installed on the air outlet valve (31), one end of the air outlet circular tube (32) and the air intake square tube (29) are both connected to the inner cavity of the pressure storage box (27), and the other ends of the air outlet circular tube (32) and the air intake square tube (29) are both oriented toward the landing point of the sampling tube (2).

4. A soil sampling device for environmental geological investigation according to claim 3, characterized in that: A rotating shaft (18) is provided on the supporting horizontal plate (4) between the two pressure storage boxes (27), and an auxiliary base plate (19) is rotatably connected to the middle of the rotating shaft (18). Both ends of the auxiliary base plate (19) are fixedly mounted on two corresponding guide rotating blocks (7), and a rotating gear (9) is fixedly connected to the upper end of the rotating shaft (18), and the rotating gear (9) is meshingly connected to the rotating gear ring (8).

5. A soil sampling device for environmental geological investigation according to claim 4, characterized in that: A rotating disc (20) is fixedly mounted on the lower end of the rotating shaft (18), a positioning column (21) is eccentrically mounted on the bottom of the rotating disc (20), and a sliding frame (22) is slidably connected to the positioning column (21); a plurality of positioning cylinders (23) are fixedly connected to the side of the sliding frame (22) away from the supporting horizontal plate (4), a positioning base plate (24) is slidably connected to the positioning cylinder (23), and the positioning base plate (24) is fixedly mounted on the corresponding supporting horizontal plate (4); a bending square rod (25) is mounted on both sides of the sliding frame (22), and the other end of the bending square rod (25) is fixedly connected to the extrusion square plate (26) in the corresponding pressure storage square box (27).

6. A soil sampling device for environmental geological investigation according to claim 5, characterized in that: The transmission mechanism comprises a T-shaped base plate (33), the T-shaped base plate (33) is fixedly mounted on any one of the electric linear slides (3) near the lower end, a first rotating shaft (34) is rotatably mounted on the T-shaped base plate (33), a transmission belt assembly is arranged between the first rotating shaft (34) and a third rotating shaft (44), an L-shaped base (38) is fixedly mounted at the middle position of the lower end surface of the U-shaped base (39), a second rotating shaft (37) is rotatably mounted on the L-shaped base (38), a gear assembly is arranged between the lower end of the second rotating shaft (37) and the first rotating shaft (34), a linkage gear (40) is fixedly mounted on the upper end of the second rotating shaft (37), and the linkage gear (40) is meshingly connected with the rotating gear ring (8).

7. A soil sampling device for environmental geological investigation according to claim 6, characterized in that: The transmission rope assembly comprises a rope (42); the tops of the two electric linear slides (3) are commonly connected to a linkage long plate (5), and a fixed pulley (6) is installed on the linkage long plate (5); a fixing square seat (17) is installed on the side of the rectangular square plate (14) close to the mobile device (1); a wire bundling roller (43) is fixedly installed at the middle position of the third rotating shaft (44), the rope (42) is wound around the wire bundling roller (43), and the free end of the rope (42) is wrapped around the fixed pulley (6) and fixedly installed on the fixing square seat (17).

8. A soil sampling device for environmental geological investigation according to claim 7, characterized in that: A spring (47) is sleeved on the third rotating shaft (44); one end of the spring (47) is fixedly connected to the third rotating shaft (44); and the other end of the spring (47) is fixedly connected to the electric linear slide (3).

9. A soil sampling device for environmental geological investigation according to claim 8, characterized in that: The corner stop unit comprises a fixed U-seating (48) arranged on the top of the water tank (10), an auxiliary connecting column (49) is rotatably mounted on the fixed U-seating (48), and the auxiliary connecting column (49) is connected to the water spray head (12); two ends of the auxiliary connecting column (49) pass through two side surfaces of the fixed U-seating (48) and are fixedly connected to a limiting L-plate (50), and an arc-shaped square rod (51) is slidably connected to the limiting L-plate (50), and the arc-shaped square rod (51) is fixedly mounted on the water tank (10); ... An arc spring (54) is sleeved on the rod (51), one end of the arc spring (54) is fixedly connected to the arc square rod (51), and the other end of the arc spring (54) is fixedly connected to the limit L plate (50); a plurality of stop circular grooves (55) arranged at intervals are provided on a side surface of the arc square rod (51) away from the water tank (10), a stop lock rod (59) is connected to the limit L plate (50) via an elastic component, and one end of the stop lock rod (59) is inserted into the corresponding stop circular groove (55).

10. A soil sampling method for environmental geological investigation, based on the soil sampling device for environmental geological investigation according to claim 9, characterized in that: The sampling method includes the following steps: Step 1: When sampling, first operate the mobile device (1) to move the sampling tube (2) to the top of the sampling position point, then slide the electric linear slide (3) on the mobile device (1) so that the lower end surface of the supporting horizontal plate (4) is in contact with the ground, thereby limiting the sampling tube (2) to the top of the sampling position point; Step 2: starting the rotating motor (15) to drive the sampling tube (2) to rotate, so that the sampling tube (2) rotates to perform a soil sampling operation; Step 3: The electric linear slide (3) is used to drive the slide table (13) to drive the rectangular plate (14) to move downward, and the rectangular plate (14) drives the sampling tube (2) to move in a direction close to the ground, and the sampling tube (2) penetrates into the soil to perform a soil sampling operation; Step 4: The rectangular square plate (14) drives the retaining square seat (17) to move synchronously when it moves downward. The movement of the retaining square seat (17) drives the wire-releasing roller (43) to rotate through the cooperation of the rope (42) and the fixed pulley (6). The wire-releasing roller (43) drives the third rotating shaft (44) to rotate. At this time, the spring spring (47) is in a power storage state. The third rotating shaft (44) drives the first rotating shaft (34) to rotate through the transmission belt assembly. The first rotating shaft (34) drives the second rotating shaft (37) to rotate through the gear assembly. The second rotating shaft (37) rotates through the linkage gear (40) meshing with the rotating gear ring (8). Step 5: The water in the water tank (10) is transported to the water spray head (12) through the flexible pipe (11) and sprayed out. The rotating gear ring (8) drives the water tank (10) to rotate, thereby causing the water spray head (12) to rotate around the sampling point of the sampling tube (2) to spray water, thereby moistening the soil and reducing dust. Step 6: The rotating gear ring (8) rotates to engage the rotating gear (9) to drive the rotating shaft (18) and the rotating disc (20) to rotate, and the rotating disc (20) drives the positioning column (21) to rotate eccentrically, so that the positioning column (21) moves back and forth in the sliding frame (22). At this time, the sliding frame (22) is supported by the cooperation of the positioning cylinder (23) and the positioning base plate (24) to move back and forth, thereby driving the bending square rod (25) to move back and forth, and the bending square rod (25) drives the extrusion square plate (26) to move back and forth in the pressure storage square box (27); the air outlet circular tube (32) and the air inlet square tube (29) are alternately blown and sucked to achieve the cleaning operation of impurities and part of dust generated during sampling; Step 7: When the sampling tube (2) penetrates the required depth into the soil, it indicates that the sampling is completed. At this time, the electric linear slide (3) is started to reset it. The electric linear slide (3) drives the rectangular square plate (14) to drive the sampling tube (2) to move upward and reset it. Then, the soil in the sampling tube (2) is taken out to obtain the soil sample.

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