An undisturbed soil sampling device for soil monitoring

Abstract

The application provides a raw soil sampling device for soil monitoring, which is used to solve the problem that the prior art soil sampling device cannot simultaneously sample raw soil at multiple depths of the same position. The device comprises a sampling vehicle, a drilling assembly, a sampling assembly and a sample delivery assembly. The sampling vehicle comprises a front-end box and a rear-end box with open lower ends. The drilling assembly comprises two sets of drilling mechanisms installed in the front-end box. The sampling assembly comprises a first sleeve and a second sleeve sliding in the vertical direction. A plurality of sets of transverse sampling mechanisms are vertically and equidistantly arranged in the first sleeve. The sample delivery assembly comprises a plurality of sets of conveying mechanisms arranged between the first sleeve and the second sleeve for conveying sample preservation cylinders. The application drills a sampling hole, inserts the first sleeve and the second sleeve into the sampling hole, and then samples the raw soil through the transversely arranged transverse sampling mechanisms, so that raw soil at different depths of the same position is sampled, and experimental research on the current situation of the soil is facilitated.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of soil sampling, and particularly relates to a device for sampling undisturbed soil for soil monitoring. BACKGROUND

[0002] Undisturbed soil detection is an important technical means for soil monitoring. In the process of soil monitoring, when the soil is polluted, the soil conditions at different depths at the same position need to be analyzed and evaluated to accurately grasp the variation law of the soil conditions and the content of pollutants.

[0003] The existing soil sampling device is mainly obtained by pressing the drill to sample the soil. This method can compress the soil during the sampling process, and cannot truly reflect the soil conditions at different depths. In recent years, in the process of urban land development, because of soil pollution and insufficient soil monitoring and detection evaluation in the early stage, significant economic and time losses have been caused. For example, a plot of land was originally used for pesticide production, which caused great pollution to the soil during the pesticide production process. During the later land development and construction process, the lower soil was still not satisfied with the use requirements after being excavated and transported for many times, causing significant economic losses. Therefore, sampling and monitoring of undisturbed soil at different depths before land development has become the most important link in land development. SUMMARY

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present application is to provide a device for sampling undisturbed soil for soil monitoring, which can solve the problem that the soil sampling device in the prior art cannot sample undisturbed soil at multiple depths at the same position.

[0005] To achieve the above-mentioned purposes and other related purposes, the present application provides a device for sampling undisturbed soil for soil monitoring, which comprises a sampling vehicle, the sampling vehicle comprises a front-end box and a rear-end box with an open lower end, and:

[0006] a drilling assembly,

[0007] The drilling assembly comprises two groups of drilling mechanisms installed in the front-end box for drilling sampling holes, the two groups of drilling mechanisms are arranged in parallel with each other, and the drilling mechanisms each comprise a drill bit for drilling in the vertical direction;

[0008] a sampling assembly,

[0009] The sampling assembly comprises a first sleeve and a second sleeve sliding in the vertical direction, the first sleeve and the second sleeve are respectively arranged to slide in the rear-end box, during sampling, the first sleeve and the second sleeve are respectively inserted into two sampling holes drilled by the two groups of drilling mechanisms, and a plurality of groups of transverse sampling mechanisms are arranged in the first sleeve at equal intervals in the vertical direction;

[0010] a sample delivery assembly,

[0011] The sample delivery assembly includes several sets of conveying mechanisms disposed between the first sleeve and the second sleeve for transporting sample storage cylinders. The several sets of conveying mechanisms are arranged vertically and correspond one-to-one with the horizontal sampling mechanisms.

[0012] As an optional solution, the sample storage tube includes a tube body and a tube cap that is threadedly connected to the tube body;

[0013] The bottom end of the cylinder and the top end of the cylinder cover are both provided with square limiting holes, and an annular limiting groove is provided on the outer circumference of the cylinder. Both the cylinder and the cylinder cover are made of magnetically adsorbable metal material.

[0014] As an optional solution, the drilling mechanism also includes a first cylinder, a mounting box, a first motor, and a slide rail module;

[0015] A first cylinder that extends and retracts vertically is installed on the top of the sampling vehicle. The mounting box is installed on the extension end of the first cylinder. The first motor is installed inside the mounting box. The rotating shaft of the drill bit is connected to the power output shaft of the first motor.

[0016] Several sets of guide rail modules are provided between the installation box and the side wall of the sampling vehicle.

[0017] As an optional solution, sliding sleeves are installed on both inner side walls of the rear end housing. Several first sliding holes are opened on the side wall of the opposite side of the two sliding sleeves, and several second sliding holes are opened on the side wall of the opposite side of the first sleeve and the second sleeve. The several first sliding holes and the several second sliding holes are equally spaced in the vertical direction. The distance between the several first sliding holes and the distance between the several second sliding holes are the same as the distance between the several sets of transverse sampling mechanisms.

[0018] The first sleeve and the second sleeve slide along the two sliding sleeves respectively. A rack arranged vertically is installed on the side wall of both the first sleeve and the second sleeve. A second motor is installed on the inner wall of the bottom end of each sliding sleeve. A gear is installed on the power output shaft of the second motor. The gear meshes with the rack for transmission.

[0019] As an optional solution, two parallel vertical plates are installed inside the first sleeve, and several guide rails arranged in the transverse direction are installed on the inner sidewalls of the two vertical plates.

[0020] A sliding plate is provided between the two vertical plates. The sliding plate is perpendicular to the two vertical plates and forms a sealed cavity with the two vertical plates and the inner wall of the first sleeve. The sliding plate slides in a sealed manner along the vertical plates and the guide rail. The transverse sampling mechanism is installed on the sliding plate.

[0021] As an optional solution, the top of the sampling vehicle is equipped with an air extraction module, which is connected to a sealed cavity via a connecting pipe.

[0022] As an optional solution, the transverse sampling mechanism includes an installation cylinder, a sampling cylinder, sampling blades, a rotating shaft, a synchronous pulley, a first square positioning block, a magnetic block, a third motor, a synchronous belt, and a clearance hole;

[0023] The mounting cylinder is mounted on the sliding plate, and the rotation of the sampling cylinder is mounted inside the mounting cylinder. The front end of the sampling cylinder is provided with sampling blades, and a rotating shaft is mounted on the outer wall of the rear end of the sampling cylinder. A synchronous wheel is mounted on the rotating shaft, and a first square positioning block is mounted on the inner wall of the rear end of the sampling cylinder. A magnet is mounted at the center of the first square positioning block.

[0024] A third motor is installed on the mounting cylinder at the top. The third motor drives several sampling cylinders to rotate through the synchronous belt and the synchronous pulley. The side wall of the mounting cylinder is provided with a clearance hole for the synchronous belt to pass through.

[0025] As an optional solution, a guide sleeve is installed at each of the second sliding holes. Initially, the front end of the sampling tube is located inside the guide sleeve. A limiting module for limiting the sample storage tube during sampling is also provided between the guide sleeve and the sampling tube.

[0026] The limiting module includes a guide slope provided at one end of the guide sleeve near the mounting cylinder, and a plurality of positioning pins provided on the outer circumference of the sampling cylinder. The positioning pins slide along the inner and outer walls of the sampling cylinder, and the top of each positioning pin is connected to the sampling cylinder by a spring.

[0027] As an optional solution, the second sleeve is equipped with several pushing mechanisms at equal intervals along the vertical direction for pushing the sample preservation tube into the sampling tube.

[0028] Each of the pushing mechanisms includes a second cylinder and a push plate installed at the telescopic end of the second cylinder. A second square positioning block is installed at one end of the push plate near the first sleeve, and a suction cup electromagnet is installed at the center of the second square positioning block.

[0029] As an optional solution, the conveying mechanism includes a conveyor belt installed between two sliding sleeves, and a plurality of limiting blocks for limiting the sample storage cylinder are installed at equal intervals on the conveyor belt.

[0030] Both sides of the feed and discharge ends of the conveyor belt are equipped with limiting plates for limiting the position of the sample storage tube. The rear side walls of the corresponding rear box of the feed and discharge ends of the conveyor belt are provided with openable and closable sampling doors.

[0031] As described above, the original soil sampling device for soil monitoring according to the present invention has at least the following beneficial effects:

[0032] 1. This application drills a sampling hole using a drilling assembly, inserts a first sleeve and a second sleeve into the sampling hole, and then uses a transversely set transverse sampling mechanism to sample the original soil sample, thus realizing the sampling of the original soil sample at different depths at the same location, which facilitates subsequent experimental research on the current state of the soil.

[0033] 2. This application sets up a sample preservation cylinder. Before sampling, the sample preservation cylinder is pushed into the sampling cylinder by a pushing mechanism, and the cylinder body and cylinder cover are separated by the cooperation of the pushing mechanism and the horizontal sampling mechanism. During sampling, the original soil sample is collected through the sampling cylinder, and then the original soil sample is pushed into the cylinder body of the sample preservation cylinder by the pushing mechanism, and the cylinder body and cylinder cover are threadedly connected, thus realizing the rapid sampling and preservation of the original soil sample. Attached Figure Description

[0034] Figure 1 The diagram shown is a structural schematic of the original soil sampling device of the present invention.

[0035] Figure 2 The image shown is a bottom view of the original soil sampling device of the present invention.

[0036] Figure 3 The diagram shown is a structural schematic of the drilling assembly of the present invention.

[0037] Figure 4 The diagram shown is a structural schematic of the sample delivery component of the present invention.

[0038] Figure 5 The diagram shown is a structural schematic of the sample preservation tube of the present invention.

[0039] Figure 6 The diagram shown is a partial structural illustration of the sampling component of the present invention.

[0040] Figure 7 The diagram shown is a structural schematic of the first sleeve and the transverse sampling mechanism of the present invention.

[0041] Figure 8 The diagram shows the structure of the sliding plate and several transverse sampling mechanisms of the present invention.

[0042] Figure 9 The diagram shown is a structural schematic of the mounting cylinder and sampling cylinder of the present invention.

[0043] Figure 10 The diagram shown is a structural schematic of the sampling cylinder and guide sleeve of the present invention.

[0044] Figure 11 The image shown is a cross-sectional view of the sampling cylinder of the present invention.

[0045] Figure 12 The image shown is a top view of the sliding sleeve and the second sleeve of the present invention.

[0046] Figure 13 The diagram shown is a structural schematic of the second sleeve and the pushing mechanism of the present invention.

[0047] In the diagram: 1-Sampling vehicle; 101-Front end housing; 102-Rear end housing; 103-Sliding sleeve; 104-First sliding hole; 105-Second motor; 106-Gear;

[0048] 2-Drilling assembly; 201-Drill bit; 202-First cylinder; 203-Mounting box; 204-First motor; 205-Slide rail module;

[0049] 3-Sampling assembly; 301-First sleeve; 302-Second sleeve; 303-Rack; 304-Vertical plate; 305-Guide rail; 306-Sliding plate; 307-Sealed cavity; 308-Gas extraction module; 309-Connecting pipe; 310-Mounting cylinder; 311-Sampling cylinder; 312-Sampling blade; 313-Rotating shaft; 314-Synchronous pulley; 315-First square positioning block; 316-Magnet block; 317-Third motor; 318-Synchronous belt; 319-Allowing hole; 320-Second sliding hole; 321-Guide sleeve; 322-Guide inclined surface; 323-Positioning pin; 324-Spring; 325-Second cylinder; 326-Push plate; 327-Second square positioning block; 328-Suction cup electromagnet;

[0050] 4-Sample delivery assembly; 401-Sample storage cylinder; 402-Conveyor belt; 403-Limiting block; 404-Limiting plate; 405-Sampling door; 4011-Cylinder body; 4012-Cylinder cover; 4013-Square limiting hole; 4014-Annular limiting groove. Detailed Implementation

[0051] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0052] Please see Figures 1 to 13It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0053] The following embodiments are for illustrative purposes only. These embodiments can be combined and are not limited to the content shown in any single embodiment below.

[0054] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 8 and Figure 12 This invention provides a soil sampling device for soil monitoring, comprising a sampling vehicle 1, wherein the sampling vehicle 1 includes a front end housing 101 with an opening at the lower end and a rear end housing 102, and:

[0055] Drilling assembly 2,

[0056] The drilling assembly 2 includes two sets of drilling mechanisms installed in the front end housing 101 for drilling sampling holes. The two sets of drilling mechanisms are arranged in parallel to each other. Each drilling mechanism includes a drill bit 201 for drilling in the vertical direction.

[0057] Sampling component 3,

[0058] The sampling component 3 includes a first sleeve 301 and a second sleeve 302 that slides vertically. The first sleeve 301 and the second sleeve 302 are respectively slidably disposed in the rear box 102. During sampling, the first sleeve 301 and the second sleeve 302 are respectively inserted into two sampling holes drilled by two sets of drilling mechanisms. Several sets of transverse sampling mechanisms are equally spaced in the first sleeve 301 along the vertical direction.

[0059] Sample delivery component 4,

[0060] The sample delivery component 4 includes several sets of conveying mechanisms disposed between the first sleeve 301 and the second sleeve 302 for conveying the sample storage cylinder 401. The several sets of conveying mechanisms are arranged in the vertical direction and correspond one-to-one with the horizontal sampling mechanism.

[0061] In this example, before sampling, the drilling assembly 2 drills a sampling hole. The conveying mechanism transports the sample storage tube 401 between the first sleeve 301 and the second sleeve 302. The pushing mechanism inside the second sleeve 302 pushes the sample storage tube 401 into the sampling tube 311 inside the first sleeve 301. The pushing mechanism and the transverse sampling mechanism work together to separate the tube body 4011 and the tube cover 4012 of the sample storage tube 401. During sampling, the first sleeve 301 and the second sleeve 302 are respectively inserted into the sampling hole drilled by the drilling assembly 2. The transverse sampling mechanism performs transverse movement to achieve sampling. The original soil sample is pushed into the tube body 4011 by the pushing mechanism. The pushing mechanism and the transverse sampling mechanism work together to achieve the threaded connection between the tube body 4011 and the tube cover 4012. The transverse sampling mechanism, the first sleeve 301 and the second sleeve 302 all return to their initial positions. The pushing mechanism pulls the sample storage tube 401 out of the sampling tube 311 onto the conveying mechanism, and the sampling is completed.

[0062] Please see Figure 2 , Figure 4 and Figure 5 The sample storage tube 401 includes a tube body 4011 and a tube cap 4012 threadedly connected to the tube body 4011;

[0063] The bottom end of the cylinder 4011 and the top end of the cylinder cover 4012 are both provided with square limiting holes 4013. The outer circumferential wall of the cylinder 4011 is provided with an annular limiting groove 4014. Both the cylinder 4011 and the cylinder cover 4012 are made of magnetically adsorbable metal material.

[0064] Please see Figure 1 , Figure 2 and Figure 3 The drilling mechanism also includes a first cylinder 202, a mounting box 203, a first motor 204, and a slide rail module 205;

[0065] A first cylinder 202 that extends and retracts vertically is installed at the top of the sampling vehicle 1. The mounting box 203 is installed at the extension end of the first cylinder 202. The first motor 204 is installed inside the mounting box 203. The rotating shaft of the drill bit 201 is connected to the power output shaft of the first motor 204.

[0066] Several sets of guide rail modules 205 are provided between the installation box 203 and the side wall of the sampling vehicle 1.

[0067] In this example, during drilling, the first cylinder 202 pushes the mounting box 203, the first motor 204 and the drill bit 201 to slide downward along the slide rail module 205, while the first motor 204 drives the drill bit 201 to rotate to complete the drilling.

[0068] In this embodiment, the outer diameter of the drill bit 201 is the same as the outer diameter of the first sleeve 301 and the second sleeve 302, so that the first sleeve 301 and the second sleeve 302 can be inserted into the sampling hole. When the lateral sampling mechanism and the pushing mechanism move laterally, the first sleeve 301 and the second sleeve 302 come into contact with the soil on the inner wall of the sampling hole, which reduces the lateral force on the first sleeve 301 and the second sleeve 302 and improves the service life of the device.

[0069] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 and Figure 13 Sliding sleeves 103 are installed on both inner side walls of the rear end housing 102. A plurality of first sliding holes 104 are opened on the side wall of the opposite side of the two sliding sleeves 103. A plurality of second sliding holes 320 are opened on the side wall of the opposite side of the first sleeve 301 and the second sleeve 302. The plurality of first sliding holes 104 and the plurality of second sliding holes 320 are equally spaced along the vertical direction. The distance between the plurality of first sliding holes 104 and the distance between the plurality of second sliding holes 320 are the same as the distance between the plurality of transverse sampling mechanisms.

[0070] The first sleeve 301 and the second sleeve 302 slide along the two sliding sleeves 101 respectively. The side walls of the first sleeve 301 and the second sleeve 302 are each equipped with a rack 303 arranged in the vertical direction. The inner wall of the bottom end of the sliding sleeve 101 is equipped with a second motor 105. The power output shaft of the second motor 105 is equipped with a gear 106, and the gear 106 meshes with the rack 303 for transmission.

[0071] In this example, at the moment of sampling, the first sliding hole 104, the second sliding hole 320, and the conveying mechanism are aligned. The pushing mechanism pushes the sample preservation cylinder 401 into the sampling cylinder 311 through the first sliding hole 104 and the second sliding hole 320. The cylinder body 4011 and the cylinder cover 4012 of the sample preservation cylinder 401 are separated by the pushing mechanism and the lateral sampling mechanism. The second motor 105 rotates, and the gear 106 meshes with the rack 303 to drive the first sleeve 301 and the second sleeve 302 to be inserted into the sampling hole.

[0072] Please see Figure 2 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 andFigure 11 The first sleeve 301 has two parallel vertical plates 304 installed inside, and several guide rails 305 arranged in the horizontal direction are installed on the inner side walls of the two vertical plates 304.

[0073] A sliding plate 306 is provided between the two vertical plates 304. The sliding plate 306 is perpendicular to the two vertical plates 304. The sliding plate 306, the two vertical plates 304 and the inner wall of the first sleeve 301 form a sealed cavity 307. The sliding plate 306 slides in a sealed manner along the vertical plates 304 and the guide rail 305. The transverse sampling mechanism is installed on the sliding plate 306.

[0074] Please see Figure 1 , Figure 6 and Figure 7 The top of the sampling vehicle 1 is equipped with an air extraction module 308, which is connected to the sealed cavity 307 via a connecting pipe 309.

[0075] In this example, during sampling, the gas delivery module 308 inflates the sealed cavity 307 with air, pushing the sliding plate 306 and the lateral sampling mechanism forward to perform sampling. When sampling is completed, the gas delivery module 308 extracts air from the sealed cavity 307, pulling the sliding plate 306 and the lateral sampling mechanism backward to complete the sampling.

[0076] Please see Figure 2 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11 The transverse sampling mechanism includes an installation cylinder 310, a sampling cylinder 311, sampling blades 312, a rotating shaft 313, a synchronous pulley 314, a first square positioning block 315, a magnet block 316, a third motor 317, a synchronous belt 318, and a clearance hole 319.

[0077] The mounting cylinder 310 is mounted on the sliding plate 306, and the sampling cylinder 311 is rotated within the mounting cylinder 310. The front end of the sampling cylinder 311 is provided with sampling blade teeth 312. A rotating shaft 313 is mounted on the outer wall of the rear end of the sampling cylinder 311. A synchronous wheel 314 is mounted on each rotating shaft 313. A first square positioning block 315 is mounted on the inner wall of the rear end of the sampling cylinder 311. A magnet block 316 is mounted at the center of the first square positioning block 315.

[0078] A third motor 317 is installed on the mounting cylinder 310 at the top. The third motor 317 drives several sampling cylinders 311 to rotate through the synchronous belt 318 and the synchronous pulley 314. The side wall of the mounting cylinder 310 is provided with a clearance hole 319 for the synchronous belt 318 to pass through.

[0079] In this example, the third motor 317 drives the sampling cylinder 311 to rotate via the synchronous belt 318 and the synchronous pulley 314, while the sliding plate 306 pushes the sampling cylinder 311 forward, and the sampling cylinder 311 samples the soil between the first sleeve 301 and the second sleeve 302.

[0080] Please see Figure 2 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11 Guide sleeves 321 are installed at each of the second sliding holes 320. Initially, the front end of the sampling tube 311 is located inside the guide sleeve 321. A limiting module for limiting the sample storage tube 401 during sampling is also provided between the guide sleeve 321 and the sampling tube 311.

[0081] The limiting module includes a guide slope 322 disposed on one end of the guide sleeve 321 near the mounting cylinder 310, and a plurality of positioning pins 323 disposed on the outer circumferential wall of the sampling cylinder 311. The positioning pins 323 slide along the inner and outer walls of the sampling cylinder 311, and the top of each positioning pin 323 is connected to the sampling cylinder 311 by a spring 324.

[0082] In this example, when the sampling cylinder 311 moves to the front end, the positioning pin 323 abuts against the guide slope 322, causing the positioning pin 323 to insert into the annular limiting groove 4014 of the cylinder 4011, preventing the cylinder 4011 from disengaging from the magnet block 316 when the pushing mechanism retracts, and the sample storage cylinder 401 slides out of the sampling cylinder 311.

[0083] Please see Figure 2 , Figure 12 and Figure 13 The second sleeve 302 is equipped with several pushing mechanisms installed at equal intervals along the vertical direction for pushing the sample storage tube 401 into the sampling tube 311.

[0084] Each of the pushing mechanisms includes a second cylinder 325 and a push plate 326 installed at the telescopic end of the second cylinder 325. A second square positioning block 327 is installed at one end of the push plate 326 near the first sleeve 301. A suction cup electromagnet 328 is installed at the center of the second square positioning block 327.

[0085] In this example, before sampling, the suction cup electromagnet 328 is energized, and the second cylinder 325 drives the push plate 326 and the suction cup electromagnet 328 to push out. The suction cup electromagnet 328 attracts the cylinder cover 4012 and pushes the sample preservation cylinder 401 into the sampling cylinder 311, where it contacts the inner wall of the sampling cylinder 311. This drives the sampling cylinder 311 to rotate, causing the square limiting holes 4013 at both ends of the sample preservation cylinder 401 to engage with the first square positioning block 315 and the second square positioning block 327, respectively. The sampling cylinder 311 is then driven to rotate forward again, while the second cylinder 325 slowly retracts, disengaging the cylinder body 4011 and the cylinder cover 4012. This continues until the cylinder cover 4012 retracts into the second sleeve 302. When sampling is completed (both the first sleeve 301 and the second sleeve 302 are located in the sampling hole), the second cylinder 325 pushes out, and the front cover 4012 pushes the sampled original soil into the cylinder 4011, driving the sampling cylinder 311 to rotate, so that the cover 4012 is threadedly connected to the cylinder 4011, the suction cup electromagnet 328 is de-energized, and the second cylinder 325 retracts.

[0086] In this example, the second cylinder 325 is a rod-non-returning cylinder, and the attraction force of the suction cup electromagnet 328 is much greater than that of the magnet block 316.

[0087] Please see Figure 2 , Figure 4 and Figure 5 The conveying mechanism includes a conveyor belt 402 installed between two sliding sleeves 101, and a plurality of limiting blocks 403 for limiting the sample storage cylinder 401 are installed at equal intervals on the conveyor belt 402.

[0088] Both sides of the feed end and discharge end of the conveyor belt 402 are equipped with limiting plates 404 for limiting the sample storage cylinder 401. The rear box 102 corresponding to the feed end and discharge end of the conveyor belt 402 is provided with an openable and closable sampling door 405.

[0089] In this example, before sampling, the sampling gate 405 at the feed end of conveyor belt 402 is opened, and the sample storage cylinder 401 is placed on conveyor belt 402. The position of the sample storage cylinder 401 is limited by the limiting block 403 and the limiting plate 404 at the feed end. Conveyor belt 402 is started to move forward one station, so that the sample storage cylinder 401 is conveyed between the two sliding sleeves 103. When sampling is completed, the sampling gate 405 at the discharge end of conveyor belt 402 is opened, and the sample storage cylinder 401 containing the soil sample is removed from conveyor belt 402.

[0090] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A soil sampling device for soil monitoring, characterized in that, Includes a sampling vehicle, which comprises a front housing with an opening at the bottom and a rear housing, and: Drilling assembly, The drilling assembly includes two sets of drilling mechanisms installed in the front end housing for drilling sampling holes. The two sets of drilling mechanisms are arranged in parallel to each other. Each drilling mechanism includes a drill bit for drilling in the vertical direction. Sampling components The sampling assembly includes a first sleeve and a second sleeve that slide in the vertical direction. The first sleeve and the second sleeve are respectively slidably disposed in the rear end box. During sampling, the first sleeve and the second sleeve are respectively inserted into two sampling holes drilled by two sets of drilling mechanisms. Several sets of transverse sampling mechanisms are equally spaced in the first sleeve along the vertical direction. Sample delivery components, The sample delivery assembly includes several sets of conveying mechanisms disposed between the first sleeve and the second sleeve for transporting sample storage cylinders. The several sets of conveying mechanisms are arranged in the vertical direction and correspond one-to-one with the horizontal sampling mechanism. Sliding sleeves are installed on both inner side walls of the rear end housing. Several first sliding holes are opened on the side wall opposite to the two sliding sleeves. Several second sliding holes are opened on the side wall opposite to the first sleeve and the second sleeve. Several first sliding holes and several second sliding holes are equally spaced in the vertical direction. The distance between several first sliding holes and the distance between several second sliding holes are the same as the distance between several sets of transverse sampling mechanisms. The first sleeve and the second sleeve slide along the two sliding sleeves respectively. A rack arranged in the vertical direction is installed on the side wall of both the first sleeve and the second sleeve. A second motor is installed on the inner wall of the bottom end of each sliding sleeve. A gear is installed on the power output shaft of the second motor. The gear meshes with the rack for transmission. The second sleeve is equipped with several pushing mechanisms installed at equal intervals along the vertical direction for pushing the sample preservation tube into the sampling tube; Before sampling, the drilling assembly drills a sampling hole. The conveying mechanism transports the sample storage tube between the first and second sleeves. The pushing mechanism inside the second sleeve pushes the sample storage tube into the sampling tube inside the first sleeve. The pushing mechanism, in conjunction with the transverse sampling mechanism, separates the body and cap of the sample storage tube. During sampling, the first and second sleeves are inserted into the sampling hole drilled by the drilling assembly, respectively. The transverse sampling mechanism moves laterally to achieve sampling. The pushing mechanism pushes the original soil sample into the tube. The pushing mechanism, in conjunction with the transverse sampling mechanism, again achieves a threaded connection between the tube body and the cap. The transverse sampling mechanism, the first sleeve, and the second sleeve all return to their initial positions. The pushing mechanism pulls the sample storage tube from the sampling tube onto the conveying mechanism, completing the sampling process.

2. The original soil sampling device for soil monitoring as described in claim 1, characterized in that, The sample storage cylinder includes a cylinder body and a cylinder cap that is threadedly connected to the cylinder body; The bottom end of the cylinder and the top end of the cylinder cover are both provided with square limiting holes, and an annular limiting groove is provided on the outer circumference of the cylinder. Both the cylinder and the cylinder cover are made of magnetically adsorbable metal material.

3. The original soil sampling device for soil monitoring as described in claim 1, characterized in that, The drilling mechanism also includes a first cylinder, a mounting box, a first motor, and a slide rail module; A first cylinder that extends and retracts vertically is installed on the top of the sampling vehicle. The mounting box is installed on the extension end of the first cylinder. The first motor is installed inside the mounting box. The rotating shaft of the drill bit is connected to the power output shaft of the first motor. Several sets of guide rail modules are provided between the installation box and the side wall of the sampling vehicle.

4. The original soil sampling device for soil monitoring as described in claim 1, characterized in that, The first sleeve has two parallel vertical plates installed inside, and the inner sidewalls of the two vertical plates are each equipped with several guide rails arranged in the transverse direction. A sliding plate is provided between the two vertical plates. The sliding plate is perpendicular to the two vertical plates and forms a sealed cavity with the two vertical plates and the inner wall of the first sleeve. The sliding plate slides in a sealed manner along the vertical plates and the guide rail. The transverse sampling mechanism is installed on the sliding plate.

5. The original soil sampling device for soil monitoring as described in claim 4, characterized in that, The sampling vehicle is equipped with an air extraction module at its top, which is connected to a sealed cavity via a connecting pipe.

6. The original soil sampling device for soil monitoring as described in claim 5, characterized in that, The transverse sampling mechanism includes an installation cylinder, a sampling cylinder, sampling blades, a rotating shaft, a synchronous pulley, a first square positioning block, a magnetic block, a third motor, a synchronous belt, and clearance holes; The mounting cylinder is mounted on the sliding plate, and the rotation of the sampling cylinder is mounted inside the mounting cylinder. The front end of the sampling cylinder is provided with sampling blades, and a rotating shaft is mounted on the outer wall of the rear end of the sampling cylinder. A synchronous wheel is mounted on the rotating shaft, and a first square positioning block is mounted on the inner wall of the rear end of the sampling cylinder. A magnet is mounted at the center of the first square positioning block. A third motor is installed on the mounting cylinder at the top. The third motor drives several sampling cylinders to rotate through the synchronous belt and the synchronous pulley. The side wall of the mounting cylinder is provided with a clearance hole for the synchronous belt to pass through.

7. The original soil sampling device for soil monitoring as described in claim 6, characterized in that, Guide sleeves are installed at the second sliding holes. Initially, the front end of the sampling tube is located inside the guide sleeve. A limiting module is also provided between the guide sleeve and the sampling tube to limit the position of the sample storage tube during sampling. The limiting module includes a guide slope provided at one end of the guide sleeve near the mounting cylinder, and a plurality of positioning pins provided on the outer circumference of the sampling cylinder. The positioning pins slide along the inner and outer walls of the sampling cylinder, and the top of each positioning pin is connected to the sampling cylinder by a spring.

8. The original soil sampling device for soil monitoring as described in claim 7, characterized in that, Each of the pushing mechanisms includes a second cylinder and a push plate installed at the telescopic end of the second cylinder. A second square positioning block is installed at one end of the push plate near the first sleeve, and a suction cup electromagnet is installed at the center of the second square positioning block.

9. A soil sampling device for soil monitoring as described in claim 8, characterized in that, The conveying mechanism includes a conveyor belt installed between two sliding sleeves, and a plurality of limiting blocks for limiting the sample storage cylinder are installed at equal intervals on the conveyor belt. Both sides of the feed and discharge ends of the conveyor belt are equipped with limiting plates for limiting the position of the sample storage tube. The rear side walls of the corresponding rear box of the feed and discharge ends of the conveyor belt are provided with openable and closable sampling doors.

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