A device and method for detecting heavy metals in alpine soil

Abstract

The present invention discloses a device and method for detecting heavy metals in high-cold soil, and relates to the technical field of land sampling and detection, comprising a mobile base, rolling wheels are rotatably installed on both sides of the mobile base, crawlers are rotatably wound on the outer walls of the rolling wheels, a mounting frame is fixedly installed on the upper end of the mobile base, a sampling mechanism for drilling holes and taking samples from the ground is arranged on the upper end of the mounting frame, the sampling mechanism comprises a drill barrel, a drill bit is fixedly installed on the lower end of the drill barrel, and a heating mechanism for heating the drill bit is arranged inside the drill bit, a detection mechanism for detecting the sampled soil is arranged on the outer wall of the drill barrel, and the strength of the crushing drilling sampling is adjusted by the speed of the rotating drum, so that the detection device can withstand these harsh environmental conditions when performing land heavy metal detection in low-temperature and high-cold areas, making the land heavy metal detection more convenient to use.

Description

Technical Field

[0001] The present invention relates to the technical field of land sampling and detection, and in particular to a device and method for detecting heavy metals in high-cold land. Background Art

[0002] Soil sampling refers to the method of collecting soil samples, including the layout of the samples and the sampling techniques. The collection of profile soil samples should be carried out after the profile observation and recording is completed. Before sampling, the profile should be repaired and cleaned, and the topmost loose soil should be removed. Then, samples should be taken from the central typical part layer by layer from top to bottom.

[0003] The Chinese patent discloses a sampling device for heavy metal detection in contaminated land and its use method (Announcement No. CN110308011A), including a support plate. The invention solves the problem that the existing sampling device for heavy metal detection in contaminated land includes a sampler powered by a gasoline engine, which has poor environmental protection effect, poor stability during use, and cannot be sampled manually under special circumstances. The sampling device has the advantages of manual sampling or electric sampling, good stability during sampling, and good environmental protection effect.

[0004] During use, the above-mentioned existing high-altitude cold land heavy metal detection device is subjected to extreme climatic conditions in high-altitude cold regions, such as low temperature and frequent snowfall, which make the surface hardness of the soil too high. When the drill bit of the detection device is drilling and sampling on the frozen ground, the frozen ground causes great wear on the drill bit, resulting in the detection device being unable to withstand these harsh environmental conditions, leading to equipment damage. Therefore, the present invention provides a high-altitude cold land heavy metal detection device and method thereof to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide a device and method for detecting heavy metals in alpine land, so as to solve the problem in the above background technology that the detection device cannot withstand these harsh environmental conditions, resulting in equipment damage.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A device and method for detecting heavy metals in alpine soil, comprising a mobile base, rolling wheels rotatably mounted on both sides of the mobile base, tracks rotatably wound on the outer walls of the rolling wheels, a mounting frame fixedly mounted on the upper end of the mobile base, a sampling mechanism for drilling holes in the ground and taking samples is arranged on the upper end of the mounting frame, the sampling mechanism comprises a drill barrel, a drill bit is fixedly mounted on the lower end of the drill barrel, a heating mechanism for heating the drill bit is arranged inside the drill bit, and a detection mechanism for detecting the sampled soil is arranged on the outer wall of the drill barrel.

[0008] As a further solution of the present invention, a driving motor is fixedly installed on the upper end of the mounting frame, a threaded rod is fixedly installed on the output end of the driving motor, and the threaded rod is rotatably installed between the mounting frame and the movable base, a threaded barrel is threadedly sleeved on the outer wall of the threaded rod, a linkage rod is fixedly installed on the side end of the threaded barrel, a rotating circle is fixedly installed on the end of the linkage rod away from the threaded barrel, a drilling ring is rotatably installed on the inner wall of the rotating circle, and the drilling ring is fixedly installed on the upper end of the drill barrel.

[0009] As a further solution of the present invention, a mounting box is fixedly installed on the upper end of the mobile base near the drill barrel, a mounting barrel is fixedly installed on the upper end of the inner wall of the mounting box, and the drill barrel is slidably installed on the inner wall of the mounting barrel, a rotating motor is fixedly installed on the upper end of the mounting box, a rotating telescopic rod is fixedly installed on the output end of the rotating motor, a mounting ring is fixedly installed on the lower end of the rotating telescopic rod, and the mounting ring is fixedly installed on the upper end of the drilling ring.

[0010] As a further solution of the present invention, a drill disc for cutting the ground is provided at the lower end of the drill bit, and a rolling knife for breaking the ground at the position where drilling is required is provided inside the drill disc, and the structure of the rolling knife is that a plurality of cutting discs are arranged in an array on the outer wall of the rolling circle.

[0011] As a further solution of the present invention, the heating mechanism includes an electromagnetic coil, an input wire is fixedly installed at the input end of the electromagnetic coil, an electromagnetic rod is fixedly installed at the end of the input wire away from the electromagnetic coil, and the electromagnetic rod passes through and is fixed inside the drill barrel, and an electric ring is fixedly installed on the upper end of the electromagnetic rod.

[0012] As a further solution of the present invention, a brush block is slidably installed on the upper end of the power-carrying ring, a power-carrying telescopic rod is fixedly installed on the upper end of the brush block, one end of the power-carrying telescopic rod away from the brush block is fixedly connected to a transformer, and the transformer is fixedly installed on the inner wall of the mounting box.

[0013] As a further solution of the present invention, a placement groove is provided at the side end of the drill bit, and the electromagnetic coils are symmetrically installed on the inner wall of the placement groove, a sliding rail is fixedly installed on the inner wall of the placement groove, a sliding frame is slidably installed on the side end of the sliding rail, and the rolling knife is rotatably installed at one end of the sliding frame away from the sliding rail, and an electric telescopic rod is fixedly installed on the upper end of the sliding frame.

[0014] As a further solution of the present invention, a control spring is sleeved on the outer wall of the electric telescopic rod, and the control spring is fixedly installed between the sliding frame and the drill barrel, a connecting wire is fixedly installed at the input end of the electric telescopic rod, a brush ring is fixedly installed at the end of the connecting wire away from the electric telescopic rod, an energized slider is slidably installed on the upper end of the brush ring, a control wire is fixedly installed on the upper end of the energized slider, an electromagnetic induction coil is arranged inside the mounting barrel, and the electromagnetic induction coil is threadedly arranged on the inner wall of the mounting barrel.

[0015] As a further solution of the present invention, the detection mechanism includes a detection rod, a detection cylinder is arranged on the inner wall of the mounting cylinder away from the sliding gap, a plurality of detection holes are arranged in a vertical array on the outer wall of the drill cylinder close to the detection cylinder, a detection telescopic rod is fixedly installed at one end of the detection cylinder away from the mounting cylinder, and the detection rod is fixedly installed at the output end of the detection telescopic rod.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. When the present invention is used, the speed of the rotating drum is used to adjust the intensity of the crushing drilling sampling, so that the detection device can withstand these harsh environmental conditions when performing land heavy metal detection in low-temperature and cold areas, making the land heavy metal detection more convenient to use.

[0018] 2. When the present invention is used, after the rolling knife contacts the frozen soil, the rolling knife starts to rotate, and the cutting blade starts to rotate between the electromagnetic coils. Due to the electromagnetic field generated by the electromagnetic coils, the cutting blade generates current, causing the cutting blade to start to heat up. Therefore, when the drill bit drills holes in the frozen soil for sampling, the rolling knife first heats and softens the frozen soil, thereby reducing the resistance encountered by the drill blade and making sampling faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the main structure of a heavy metal detection device for alpine land.

[0020] Figure 2 This is a bottom view of a heavy metal detection device for high-altitude and cold land.

[0021] Figure 3 This is a schematic diagram of the structure of an installation tube in a heavy metal detection device for high-altitude and cold land.

[0022] Figure 4 The diagram is a cross-sectional structural diagram of an installation tube in a heavy metal detection device for alpine land.

[0023] Figure 5 This is a schematic diagram of the structure of a brush ring in a heavy metal detection device for high-altitude and cold land.

[0024] Figure 6 This is a schematic diagram of the structure of an installation ring in a heavy metal detection device for alpine land.

[0025] Figure 7 This is a schematic diagram of the structure of a detection rod in a heavy metal detection device for alpine land.

[0026] Figure 8 This is a schematic diagram of the structure of a drill bit in a heavy metal detection device for alpine land.

[0027] Fig. 9 This is a schematic diagram of the structure of a drill bit in a heavy metal detection device for alpine land.

[0028] In the figure: 1, mobile base; 101, rolling wheel; 102, crawler track; 103, mounting frame;

[0029] 2. Sampling mechanism; 201. Drill barrel; 202. Drill bit; 203. Driving motor; 204. Threaded rod; 205. Threaded barrel; 206. Linkage rod; 207. Rotating circle; 208. Drilling circle;

[0030] 209, installation box; 210, installation tube; 211, rotating motor; 212, rotating telescopic rod; 213, installation ring;

[0031] 214, drill disc; 215, cutting disc; 216, rolling knife;

[0032] 3. Heating mechanism; 301. Electromagnetic coil; 302. Input line; 303. Electromagnetic rod; 304. Power coil; 305. Brush block; 306. Power telescopic rod; 307. Transformer;

[0033] 308, placement slot; 309, sliding rail; 310, sliding frame; 311, electric telescopic rod; 312, control spring; 313, connecting wire; 314, brush ring; 315, power slider; 316, control wire; 317, winding drum; 318, electromagnetic induction coil;

[0034] 4. Detection mechanism; 401. Detection rod; 402. Detection tube; 403. Detection hole; 404. Detection telescopic rod. DETAILED DESCRIPTION

[0035] 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.

[0036] See also Figures 1 to 9 In an embodiment of the present invention, a heavy metal detection device for high-cold soil includes a mobile base 1, rolling wheels 101 are rotatably installed on both sides of the mobile base 1, and a driving device is provided in the mobile base 1, the rolling wheels 101 are fixedly installed at the output end of the driving device, a crawler 102 is rotatably wound on the outer wall of the rolling wheel 101, an anti-skid protrusion is provided on the outer wall of the rolling wheel 101, and a groove that fits the anti-skid protrusion is provided on the crawler 102, and the crawler 102 is provided at both ends of the mobile base 1, so that the detection device can move more stably under extremely harsh weather conditions, a mounting frame 103 is fixedly installed on the upper end of the mobile base 1, and a sampling mechanism 2 for drilling and sampling the ground is provided on the upper end of the mounting frame 103, the sampling mechanism 2 includes a drill barrel 201, a drill bit 202 is fixedly installed on the lower end of the drill barrel 201, and a heating mechanism 3 for heating the drill bit 202 is provided inside the drill bit 202, and a detection mechanism 4 for detecting the taken soil is provided on the outer wall of the drill barrel 201.

[0037] See also Figure 1 to Figure 5 A drive motor 203 is fixedly mounted on the upper end of the mounting frame 103. The drive motor 203 is a LEADSHINE motor in the prior art. Closed-loop stepper motor driver all-in-one iCL57-23, the output end of the drive motor 203 is fixedly installed with a threaded rod 204, and the threaded rod 204 is rotatably installed between the mounting frame 103 and the mobile base 1, and the threaded rod 204 is rotatably installed between the mounting frame 103 and the mobile base 1, so that the threaded rod 204 will not move during the rotation process, and a threaded barrel 205 is threadedly sleeved on the outer wall of the threaded rod 204, and a linkage rod 206 is fixedly installed on the side end of the threaded barrel 205, and a rotating circle 207 is fixedly installed on the end of the linkage rod 206 away from the threaded barrel 205, and a drilling circle 208 is rotatably installed on the inner wall of the rotating circle 207, and the drilling circle 208 is fixedly installed on the upper end of the drill barrel 201. Specifically, when the detection device needs to be used, the drive motor 203 is started, the drive motor 203 drives the threaded rod 204 to start rotating, and the threaded barrel 205 starts to move downward, pushing the drill barrel 201 downward to sample the frozen soil.

[0038] See also Figure 1 to Figure 6, a mounting box 209 is fixedly installed on the upper end of the mobile base 1 near the drill tube 201, a mounting tube 210 is fixedly installed on the upper end of the inner wall of the mounting box 209, and a sliding gap is opened at the side end of the mounting tube 210 near the linkage rod 206, the sliding gap prevents the linkage rod 206 from colliding with the mounting tube 210 and causing damage during the movement, and the drill tube 201 is slidably installed on the inner wall of the mounting tube 210, a rotating motor 211 is fixedly installed on the upper end of the mounting box 209, a rotating telescopic rod 212 is fixedly installed on the output end of the rotating motor 211, the rotating telescopic rod 212 is arranged as an automatic locking telescopic support rod in the prior art, a mounting ring 213 is fixedly installed on the lower end of the rotating telescopic rod 212, and the mounting ring 213 is fixedly installed on the upper end of the drilling hole ring 208, specifically, after starting the rotating motor 211, the rotating telescopic rod 212 can drive the drilling hole ring 208 to start rotating during the rotation process.

[0039] See also Figures 1 to 9 The lower end of the drill bit 202 is provided with a drill blade 214 for cutting the ground. The inner part of the drill blade 214 is provided with a rolling knife 216 for breaking the ground at the position where the drilling hole is required. The structure of the rolling knife 216 is that a plurality of cutting blades 215 are arranged in an array on the outer wall of the rolling circle, and the cutting blade 215 is made of an energized heating material in the prior art, so that the rolling knife 216 generates current due to the electromagnetic field during the rolling process, thereby generating heat, heating and softening the frozen soil during the cutting process, so that the drill blade 214 is subjected to less resistance when drilling and sampling the frozen soil.

[0040] See also Figures 1 to 9 The heating mechanism 3 includes an electromagnetic coil 301, which is a folded coil, so that the electromagnetic field strength generated by the electromagnetic coil 301 is greater. An input line 302 is fixedly installed at the input end of the electromagnetic coil 301, and an electromagnetic rod 303 is fixedly installed at one end of the input line 302 away from the electromagnetic coil 301. The electromagnetic rod 303 is a synthetic copper wire material that generates an electromagnetic field when current passes through the prior art, and the electromagnetic rod 303 passes through and is fixed inside the drill tube 201. The upper end of the electromagnetic rod 303 is fixedly installed with The power-on circle 304 has a brush block 305 slidably mounted on the upper end of the power-on circle 304, and a power-on telescopic rod 306 is fixedly mounted on the upper end of the brush block 305. The above-mentioned existing power-on telescopic rod 306 is a telescopic rod made of metal power-on material, so that the power-on circle 304 moves up and down with the drill pipe 201, and the brush block 305 remains in a power-on state. The end of the power-on telescopic rod 306 away from the brush block 305 is fixedly connected with a transformer 307. The above-mentioned transformer 307 is the DELIXI control transformer 307 BK-500VA 220V / 24V in the prior art, and the transformer 307 is fixedly mounted on the inner wall of the installation box 209. The transformer 307 keeps the electromagnetic field strength generated by the electromagnetic rod 303 stable.

[0041] See also Figures 1 to 9 A placement groove 308 is provided at the side end of the drill piece 214, and the electromagnetic coils 301 are symmetrically installed on the inner wall of the placement groove 308, a sliding rail 309 is fixedly installed on the inner wall of the placement groove 308, and a sliding frame 310 is slidably installed on the side end of the sliding rail 309, and the rolling knife 216 is rotatably installed on the end of the sliding frame 310 away from the sliding rail 309, so that the cutting blades 215 arranged in an array during the rotation of the rolling knife 216 generate current with the electromagnetic field generated by the electromagnetic coil 301, and an electric telescopic rod 311 is fixedly installed on the upper end of the sliding frame 310. The above-mentioned electric telescopic rod 311 is a light-load piston rod electric cylinder in the prior art, and the above-mentioned electric telescopic rod 311 can be freely extended and retracted, raised and lowered under normal conditions.

[0042] See also Figures 1 to 9 A control spring 312 is sleeved on the outer wall of the electric telescopic rod 311, and the control spring 312 is fixedly installed between the sliding frame 310 and the drill tube 201. Under normal circumstances, the control spring 312 and the electric telescopic rod 311 are in an extended state. When the electric telescopic rod 311 is powered on, the electric telescopic rod 311 contracts and compresses the control spring 312, thereby reducing the squeezing force between the rolling knife 216 and the frozen soil. A connecting wire 313 is fixedly installed at the input end of the electric telescopic rod 311, and a brush ring 314 is fixedly installed at one end of the connecting wire 313 away from the electric telescopic rod 311. The upper end of the brush ring 314 is slidably mounted An energized slider 315 is installed, a control line 316 is fixedly installed on the upper end of the energized slider 315, and a winding drum 317 is fixedly installed on the upper end of the inner wall of the mounting cylinder 210 close to the control line 316, and the control line 316 is wound on the inner wall of the winding drum 317. The winding drum 317 makes it more convenient for the drill cylinder 201 to move up and down to pull the control line 316 to extend. An electromagnetic induction coil 318 is arranged inside the mounting cylinder 210, and the electromagnetic induction coil 318 is threadedly arranged on the inner wall of the mounting cylinder 210. Specifically, the electromagnetic rod 303 rotates to generate current in the electromagnetic induction coil 318, and the calculation formula for the magnitude of the generated current is:

[0043] ε = -dΦ / dt

[0044] Among them: ε represents the induced electromotive force unit: volt, V, Φ represents the magnetic flux unit: Weber, Wb, t represents the time unit: second, s, dΦ / dt represents the rate of change of magnetic flux over time. When the magnetic flux in a coil changes, an electromotive force will be generated in the coil. The magnitude of this electromotive force is proportional to the rate of change of the magnetic flux, and the direction is determined by Lenz's law, that is, the direction of the induced electromotive force always tries to resist the change of magnetic flux that causes it.

[0045] See also Figure 1 to Figure 7The detection mechanism 4 includes a detection rod 401, which is a Panasonic GP-X series high-speed and high-precision eddy current sensor detection head in the prior art. A detection tube 402 is arranged on the inner wall of the mounting tube 210 away from the sliding gap, and a plurality of detection holes 403 are arranged in a vertical array on the outer wall of the drill tube 201 close to the detection tube 402. A detection telescopic rod 404 is fixedly installed on one end of the detection tube 402 away from the mounting tube 210, and the detection rod 401 is fixedly installed on the output end of the detection telescopic rod 404, and the end of the detection rod 401 away from the detection telescopic rod 404 is arranged in a cone shape, so that the detection rod 401 is more convenient to insert into the frozen soil. Specifically, when it is necessary to detect the soil taken out by drilling, after moving the drill tube 201 to a suitable height, the rotating drum is rotated to a suitable angle, and the detection telescopic rod 404 is started, so that the detection telescopic rod 404 pushes the detection rod 401 to insert into the taken out frozen soil, thereby performing heavy metal detection on the frozen soil.

[0046] The working principle of the present invention is:

[0047] When it is necessary to use a detection device to detect frozen soil;

[0048] S1: After the mobile base 1 is moved to a suitable position, the driving motor 203 and the rotating motor 211 are started, the threaded rod 204 causes the threaded barrel 205 to start moving downward, the electric rotating circle 207 of the linkage rod 206 starts to descend, driving the drill barrel 201 to start moving downward, the rotating telescopic rod 212 drives the mounting circle 213 to start rotating, and the rotating circle 207 drives the rotating barrel to start rotating, so that the rotating barrel starts to slowly cut the frozen soil, so that the drill barrel 201 is more stable during the descending sampling process;

[0049] S2: When the drill tube 201 rotates and descends, the rolling knife 216 provided on the drill piece 214 installed on the drill bit 202 first contacts the frozen soil. After the rolling knife 216 contacts the frozen soil, the rolling knife 216 starts to rotate, and the cutting piece 215 starts to rotate between the electromagnetic coils 301. Due to the electromagnetic field generated by the electromagnetic coils 301, the cutting piece 215 generates current, so that the cutting piece 215 starts to heat up. Therefore, when the drill bit 202 drills and samples the frozen soil, the rolling knife 216 first heats and softens the frozen soil, so that the resistance of the drill piece 214 is reduced, and the sampling is faster;

[0050] S3: When the drill barrel 201 rotates at a high speed, the current generated by the electromagnetic rod 303 rotating the electromagnetic induction coil 318 is transmitted to the electric telescopic rod 311 through the connecting line 313 and the control line 316, so that the electric telescopic rod 311 pulls the control spring 312 to contract, thereby reducing the pressure of the rolling knife 216 squeezing the frozen soil surface. On the contrary, when the rotation speed is too slow, the control spring 312 pushes the rolling knife 216 to squeeze the frozen soil. The force increases, so that the detection device can withstand these harsh environmental conditions when performing land heavy metal detection in low-temperature and cold areas, making land heavy metal detection more convenient to use.

[0051] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A heavy metal detection device for alpine land, comprising a mobile base (1), characterized in that: Rolling wheels (101) are rotatably mounted on both sides of the mobile base (1), tracks (102) are rotatably wound on the outer walls of the rolling wheels (101), a mounting frame (103) is fixedly mounted on the upper end of the mobile base (1), a sampling mechanism (2) for drilling holes and sampling the ground is provided on the upper end of the mounting frame (103), the sampling mechanism (2) comprises a drill tube (201), a drill bit (202) is fixedly mounted on the lower end of the drill tube (201), a heating mechanism (3) for heating the drill bit (202) is provided inside the drill bit (202), and a detection mechanism (4) for detecting the sampled soil is provided on the outer wall of the drill tube (201); A mounting box (209) is fixedly mounted on the upper end of the mobile base (1) near the drill tube (201); a mounting tube (210) is fixedly mounted on the upper end of the inner wall of the mounting box (209); and the drill tube (201) is slidably mounted on the inner wall of the mounting tube (210); a rotating motor (211) is fixedly mounted on the upper end of the mounting box (209); a rotating telescopic rod (212) is fixedly mounted on the output end of the rotating motor (211); a mounting ring (213) is fixedly mounted on the lower end of the rotating telescopic rod (212); and the mounting ring (213) is fixedly mounted on the upper end of the drilling ring (208); The lower end of the drill bit (202) is provided with a drill blade (214) for cutting the ground, and a rolling knife (216) is rotatably provided inside the drill blade (214) for breaking the ground at the position where a hole needs to be drilled, and the rolling knife (216) has a structure in which a plurality of cutting blades (215) are arranged in an array on the outer wall of a rolling circle; The heating mechanism (3) comprises an electromagnetic coil (301), an input line (302) is fixedly installed at the input end of the electromagnetic coil (301), an electromagnetic rod (303) is fixedly installed at one end of the input line (302) away from the electromagnetic coil (301), and the electromagnetic rod (303) passes through and is fixed inside the drill tube (201), and an electric ring (304) is fixedly installed at the upper end of the electromagnetic rod (303); A placement groove (308) is provided at the side end of the drill piece (214), a sliding rail (309) is fixedly installed on the inner wall of the placement groove (308), a sliding frame (310) is slidably installed at the side end of the sliding rail (309), and the rolling knife (216) is rotatably installed at one end of the sliding frame (310) away from the sliding rail (309), and an electric telescopic rod (311) is fixedly installed at the upper end of the sliding frame (310); A control spring (312) is sleeved on the outer wall of the electric telescopic rod (311), and the control spring (312) is fixedly installed between the sliding frame (310) and the drill tube (201); a connecting wire (313) is fixedly installed at the input end of the electric telescopic rod (311); a brush ring (314) is fixedly installed at one end of the connecting wire (313) away from the electric telescopic rod (311); a power-carrying slider (315) is slidably installed at the upper end of the brush ring (314); a control wire (316) is fixedly installed at the upper end of the power-carrying slider (315); an electromagnetic induction coil (318) is arranged inside the mounting tube (210), and the electromagnetic induction coil (318) is threadedly arranged on the inner wall of the mounting tube (210).

2. The device for detecting heavy metals in alpine land according to claim 1, characterized in that: A driving motor (203) is fixedly mounted on the upper end of the mounting frame (103), a threaded rod (204) is fixedly mounted on the output end of the driving motor (203), and the threaded rod (204) is rotatably mounted between the mounting frame (103) and the movable base (1), a threaded sleeve (205) is threadedly sleeved on the outer wall of the threaded rod (204), a linkage rod (206) is fixedly mounted on the side end of the threaded sleeve (205), a rotating ring (207) is fixedly mounted on one end of the linkage rod (206) away from the threaded sleeve (205), a drilling ring (208) is rotatably mounted on the inner wall of the rotating ring (207), and the drilling ring (208) is fixedly mounted on the upper end of the drilling sleeve (201).

3. The heavy metal detection device for alpine land according to claim 1 is characterized in that: A brush block (305) is slidably mounted on the upper end of the energizing ring (304), a energizing telescopic rod (306) is fixedly mounted on the upper end of the brush block (305), one end of the energizing telescopic rod (306) away from the brush block (305) is fixedly connected to a transformer (307), and the transformer (307) is fixedly mounted on the inner wall of the mounting box (209).

4. The device for detecting heavy metals in alpine land according to claim 1, characterized in that: The detection mechanism (4) comprises a detection rod (401); a detection tube (402) is arranged on the inner wall of the mounting tube (210) away from the sliding gap; a plurality of detection holes (403) are arranged in a vertical array on the outer wall of the drill tube (201) close to the detection tube (402); a detection telescopic rod (404) is fixedly mounted on one end of the detection tube (402) away from the mounting tube (210); and the detection rod (401) is fixedly mounted on the output end of the detection telescopic rod (404).

5. A method for using a device for detecting heavy metals in alpine land, used for a device for detecting heavy metals in alpine land as claimed in any one of claims 1 to 4, characterized in that: The following steps are involved: S1: After the mobile base (1) is moved to a designated position, the driving motor (203) and the rotating motor (211) are started, the threaded rod (204) causes the threaded barrel (205) to start moving downward, the linkage rod (206) electrically drives the rotating ring (207) to start descending, driving the drill barrel (201) to start moving downward, the rotating telescopic rod (212) drives the mounting ring (213) to start rotating, the rotating ring (207) drives the rotating barrel to start rotating, and the rotating barrel starts to slowly cut the frozen soil, thereby making the drill barrel (201) more stable during the descending sampling process; S2: the drill tube (201) rotates and descends, and the rolling knife (216) provided on the drill piece (214) installed on the drill head (202) first contacts the frozen soil. When the rolling knife (216) contacts the frozen soil, the rolling knife (216) starts to rotate, and the cutting piece (215) starts to rotate between the electromagnetic coils (301). Due to the electromagnetic field generated by the electromagnetic coils (301), the cutting piece (215) generates current, so that the cutting piece (215) starts to heat up. Therefore, when the drill head (202) drills holes in the frozen soil for sampling, the rolling knife (216) first heats and softens the frozen soil, so that the resistance of the drill piece (214) is reduced, and the sampling is faster; S3: When the drill tube (201) rotates at a high speed, the current generated by the electromagnetic rod (303) rotating the electromagnetic induction coil (318) is transmitted to the electric telescopic rod (311) through the connecting wire (313) and the control wire (316), so that the electric telescopic rod (311) pulls the control spring (312) to contract, thereby reducing the pressure of the rolling knife (216) squeezing the frozen soil surface. On the contrary, when the rotation speed is too slow, the force of the control spring (312) pushing the rolling knife (216) to squeeze the frozen soil increases.

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