A soil sampling device for soil remediation detection and its sampling method

Abstract

The present invention discloses a soil sampling device for soil remediation detection and a sampling method thereof. The soil sampling device includes a mobile vehicle body and a soil sampling mechanism. The soil sampling mechanism includes: a lifting support, including a lifting drive oil cylinder, and a cross beam is horizontally fixed between the piston rod ends of the lifting drive oil cylinder; a sampling assembly, including a drive motor fixed on the cross beam, the output shaft of the drive motor is drivingly connected to a drill rod, the drill rod is divided into a sampling part and a drilling part according to height, a spiral part is detachably installed on the outer side wall of the sampling part, and the outer end of the spiral part is provided with a notch; a sample fixing assembly, including a sample fixing oil cylinder installed on the cross beam on both sides of the drive motor, the piston rod end of the sample fixing oil cylinder is connected downward with a sample fixing cylinder that can movably sleeved on the outside of the spiral part, and the bottom end of the sample fixing cylinder is provided with an inclined surface cutting edge. The present invention can effectively and accurately sample soil samples, and can effectively facilitate the sample loading and sample sending operations of soil samples.

Description

Technical Field

[0001] The present invention relates to a soil sampling device for soil remediation detection, which is mainly used for accurately sampling the remediated soil and can conveniently and pollution-free send the sampled soil sample for inspection. Background Art

[0002] To effectively and precisely control the process of soil remediation, it is generally necessary to use a corresponding soil sampling device to sample the soil during the remediation process. By performing corresponding tests on the sampled soil, the remediation situation of the soil can be reflected, so as to effectively and precisely control the soil remediation.

[0003] Most of the existing soil sampling devices for soil remediation detection include a moving vehicle body and a lifting drive oil cylinder or a drive motor fixedly arranged on the moving vehicle body. The corresponding sampling pipe is driven by the lifting drive oil cylinder or the drive motor to penetrate and insert into the soil layer, so as to perform sampling operations on the soil during the remediation process. Since the soil layer during the remediation process is often relatively loose, when directly inserting the sampling pipe into the soil layer and then taking it out, the soil samples embedded in the sampling pipe are often not stably fixed in the sampling pipe, resulting in easy mixing of soil samples at different heights after sampling. This is not allowed for sampling the soil layer during the remediation process, because the test data of soil samples at different height positions during the remediation process will form different references for the subsequent remediation process. Therefore, it is required that soil samples at different heights do not mix during the sampling process.

[0004] To ensure the sampling accuracy, some manufacturers have begun to use sampling pipes with external sampling grooves to sample soil samples. During the sampling process, first, a drill rod with a sampling groove is inserted into the soil layer, and the soil outside the sampling groove is continuously rotated and extruded into the sampling pipe of the drill rod to accurately sample the soil sample. However, since the soil layer during the remediation process is often relatively loose, continuous rotation often only extrudes a sampling hole outside the sampling groove and still cannot stably fix the soil sample position in the sampling groove of the drill rod, which is very troublesome. The existing soil sampling devices for soil remediation detection also have problems of great difficulty in loading and sending samples during actual use, and the soil samples during the sample sending process are also easily polluted by the external environment due to lack of protection, resulting in the influence on the subsequent detection accuracy.

[0005] Therefore, the research objective of the present invention is to design a soil sampling device for soil remediation detection and its sampling method that can effectively prevent soil samples at different height positions from mixing with each other, so as to accurately sample soil samples; and can effectively facilitate the loading and sending operations of the sampled soil samples. Summary of the Invention

[0006] In view of the technical problems existing in the above-mentioned prior art, the present invention provides a soil sampling device for soil remediation detection and a sampling method thereof, which can effectively solve the technical problems existing in the above-mentioned prior art.

[0007] The technical solution of the present invention is as follows:

[0008] A soil sampling device for soil remediation detection includes a mobile vehicle body, and a corresponding sampling hole is provided on the mobile vehicle body. The soil sampling device for soil remediation detection further includes a soil sampling mechanism, and the soil sampling mechanism includes:

[0009] A lifting bracket, including lifting drive cylinders arranged on the mobile vehicle body on both sides of the sampling hole, and a corresponding cross beam is horizontally fixed between the piston rod ends of the lifting drive cylinders;

[0010] A sampling assembly, including a drive motor fixed on the cross beam, the output shaft of the drive motor is arranged downward and is drivingly connected with a corresponding drill rod. The drill rod is divided into a sampling part and a drilling part according to height. A spiral member arranged in a spiral shape is detachably installed on the outer side wall of the sampling part, the inner end part of the spiral member is detachably installed on the sampling part, and the outer end part of the spiral member is arranged in a notch shape;

[0011] A sample fixing assembly, including sample fixing cylinders fixed on the cross beam on both sides of the drive motor, the piston rod ends of the sample fixing cylinders are arranged downward and are downward connected with a sample fixing cylinder that can movably sleeved outside the spiral member. The bottom end part of the sample fixing cylinder is arranged in a bevel edge shape. After the spiral member rotates and cuts into the corresponding soil layer, the sample fixing cylinder penetrates into the soil layer under the drive of the sample fixing cylinder to cut off the soil sample embedded in the spiral member, and then the soil sample is fixedly stored in the space formed by the spiral member and the sample fixing cylinder.

[0012] The bottom end part of the drilling part of the drill rod is arranged in a pointed shape and is provided with corresponding drilling teeth.

[0013] The diameter of the sampling part of the drill rod is larger than the diameter of the drilling part, and the connection part between the sampling part and the drilling part is arranged in a slope shape.

[0014] Corresponding fixed ear plates are respectively fixed on the piston rod ends of the sample fixing cylinders, and corresponding connecting ear plates adapted to the fixed ear plates are respectively fixed on the upper sides of both sides of the sample fixing cylinder. The connecting ear plates are fixedly locked to the corresponding fixed ear plates through locking bolts.

[0015] The outer side wall of the sampling part of the drill rod is spirally provided with corresponding inverted T-shaped grooves, and the inner end part of the spiral member is arranged in a shape adapted to the inverted T-shaped grooves and is spirally inserted into the inverted T-shaped grooves.

[0016] The top end of the inverted T-shaped groove extends to the lower side of the top end of the sampling part, and the top of the screw member is fixedly abutted against the top end of the inverted T-shaped groove, and the bottom end of the screw member is fixedly connected to the bottom side of the sampling part by corresponding screws.

[0017] A corresponding arc-shaped panel is fixedly connected to the outer side of the top of the screw member, corresponding pin holes are respectively arranged between the upper side of the sample fixing cylinder and the arc-shaped panel, and corresponding fixing pins are detachably installed at the pin holes.

[0018] The driving motor is a forward and reverse variable speed motor.

[0019] A soil sampling method for soil remediation detection, based on the above-mentioned soil sampling device for soil remediation detection, comprises the following specific steps:

[0020] S1. After moving the soil sampling mechanism to the upper part of the corresponding sampling position through the moving vehicle body, the moving vehicle body stops operating;

[0021] S2. The piston rod end of the lifting drive oil cylinder retracts to drive the cross beam, the driving motor and the drill rod to move downward;

[0022] S3. When the drilling part of the drill rod contacts the soil, the driving motor starts to rotate forward at high speed to drive the drill rod to rotate; during the rotational downward movement of the drill rod, first, the drilling part forms a drilling action in the soil and compacts the soil at the drilling position; then, the sampling part rotates downward and enters the soil layer, and the screw member fixed on the sampling part rotates and cuts into the compacted soil;

[0023] S4. The lifting drive oil cylinder and the driving motor stop operating respectively, and the piston rod end of the sample fixing oil cylinder extends to drive the sample fixing cylinder to penetrate into the soil layer, so as to perform a truncation treatment on the soil layer outside the screw member;

[0024] S5. The sample fixing oil cylinder stops operating, and the piston rod end of the lifting drive oil cylinder extends to drive the drill rod and the sample fixing cylinder to leave the soil layer together;

[0025] S6. The screw is disassembled, and the fixing pin is fixedly inserted between the pin holes of the sample fixing cylinder and the arc-shaped panel. Then, the driving motor starts to rotate reversely at low speed, and the piston rod end of the lifting drive oil cylinder extends, and the piston rod end of the sample fixing oil cylinder extends, so that the screw member, the soil sample embedded in the screw member, and the sample fixing cylinder sleeved outside the screw member leave the sampling part of the drill rod together to complete the sampling operation.

[0026] After the step S6, there is also a step S7. After detaching the sample fixing cylinder from the piston rod end of the sample fixing oil cylinder, the soil attached to the drill pipe is removed, and the soil sample embedded between the sample fixing cylinder and the spiral member is sent for inspection.

[0027] Advantages of the present invention:

[0028] 1) Through the setting of the lifting bracket, the present invention effectively controls the lifting of the sampling assembly. During the sampling process, the piston rod end of the lifting drive oil cylinder retracts to drive the cross beam, the drive motor, and the drill pipe to descend; when the drilling part of the drill pipe contacts the soil, the drive motor starts to rotate forward at high speed to drive the drill pipe to rotate; during the rotating descent of the drill pipe, first, the drilling part forms a drilling action in the soil and compacts the soil at the drilling position; then, the sampling part rotates and descends into the soil layer, and the spiral member fixed on the sampling part rotates and cuts into the compacted soil; then the lifting drive oil cylinder and the drive motor stop operating respectively, and the piston rod end of the sample fixing oil cylinder extends to drive the sample fixing cylinder to penetrate into the soil layer, thereby truncating the soil layer outside the spiral member; finally, the sample fixing oil cylinder stops operating, and the piston rod end of the lifting drive oil cylinder extends to drive the drill pipe and the sample fixing cylinder to leave the soil layer together.

[0029] The compaction of the soil layer is realized through the drilling part and the connection part between the drilling part and the sampling part; then, the detachable connection between the inner end of the non-standard spiral member and the drill pipe sampling part is realized; and the rotary cutting sampling of the compacted soil layer is realized through the notch-shaped setting at the outer end of the spiral member; finally, the fixation of the soil sample embedded in the notch of the spiral member is realized through the intervention of the sample fixing cylinder, so as to effectively ensure that the soil samples at different height positions do not mix when leaving the soil layer, and effectively sample the soil samples accurately.

[0030] 2) The outer side wall of the drill pipe sampling part of the present invention is spirally provided with corresponding inverted T-shaped grooves, and the inner end of the spiral member is set in a shape adapted to the inverted T-shaped grooves and spirally inserted into the inverted T-shaped grooves; most importantly, the top end of the inverted T-shaped groove extends to the lower side of the top end of the sampling part, so that the top of the spiral member can be fixedly abutted against the top end of the inverted T-shaped groove. At this time, only by using corresponding screws to fix the bottom end of the spiral member to the bottom side of the sampling part can the stable detachable installation of the spiral member be realized under the premise of simple structure and convenient disassembly and assembly.

[0031] 3) A corresponding arc panel is fixedly connected to the outer side of the top of the spiral part of the present invention. Corresponding pin holes are respectively arranged between the upper side of the sample fixing cylinder and the arc panel, and corresponding fixing pins are detachably installed at the pin holes. In this way, after sampling is completed, the screw can be directly removed, and the fixing pin can be fixedly inserted between the pin holes of the sample fixing cylinder and the arc panel to form anti-rotation limit for the arc panel and the spiral part. Then, the driving motor is started to rotate reversely at a low speed, and the piston rod ends of the lifting driving oil cylinder and the sample fixing oil cylinder extend synchronously, so that the spiral part, the soil sample embedded in the spiral part, and the sample fixing cylinder sleeved outside the spiral part can leave the sampling part of the drill pipe together, so as to finally complete the sampling operation, and the soil sample after sampling is directly stored in the space formed by the spiral part and the sample fixing cylinder. Therefore, it can effectively facilitate the sample loading and sample sending operations of the soil sample after sampling, and effectively ensure that the soil sample is not contaminated during the sample loading and sample sending processes, so as to ensure the accuracy of the subsequent test data. Brief Description of the Drawings

[0032] Figure 1 is a structural schematic diagram of the present invention.

[0033] Figure 2 is a front view of the present invention.

[0034] Figure 3 is a sectional view of the present invention.

[0035] Figure 4 is an exploded view of the parts of the sampling assembly.

[0036] Figure 5 is a structural schematic diagram of the arc panel fixedly connected to the spiral part.

[0037] Figure 6 is a structural schematic diagram of the spiral part locked by screws.

[0038] In the drawings: mobile vehicle body 1, lifting bracket 2, lifting driving oil cylinder 201, cross beam 202, sampling assembly 3, driving motor 301, drill pipe 302, sampling part 3021, drilling part 3022, spiral part 303, sample fixing assembly 4, sample fixing oil cylinder 401, sample fixing cylinder 402, drilling teeth 5, fixed ear plate 6, connecting ear plate 7, locking bolt 8, inverted T-shaped groove 9, screw 10, arc panel 11, pin hole 12. Detailed Description of the Embodiment

[0039] For the convenience of those skilled in the art to understand, the structure of the present invention will be further described in detail below in conjunction with the drawings in the embodiments:

[0040] Embodiment 1

[0041] Reference Figure 1-6, a soil sampling device for soil remediation detection, including a mobile vehicle body 1, corresponding sampling holes are provided on the mobile vehicle body 1, and the soil sampling device for soil remediation detection further includes a soil sampling mechanism, and the soil sampling mechanism includes:

[0042] A lifting bracket 2, including lifting drive cylinders 201 arranged on the mobile vehicle body 1 on both sides of the sampling hole, and a corresponding cross beam 202 is horizontally fixed between the piston rod ends of the lifting drive cylinders 201;

[0043] A sampling assembly 3, including a drive motor 301 fixed to the cross beam 202, the output shaft of the drive motor 301 is arranged downward and is drivingly connected to a corresponding drill rod 302. The drill rod 302 is divided into a sampling part 3021 and a drilling part 3022 according to height. A spiral member 303 arranged in a spiral shape is detachably installed on the outer side wall of the sampling part 3021. The inner end of the spiral member 303 is detachably installed on the sampling part 3021, and the outer end of the spiral member 303 is arranged in a notch shape;

[0044] A sample fixing assembly 4, including sample fixing cylinders 401 fixed to the cross beam 202 on both sides of the drive motor 301. The piston rod ends of the sample fixing cylinders 401 are arranged downward and are connected downward to a sample fixing cylinder 402 that can move sleeved on the outside of the spiral member 303. The bottom end of the sample fixing cylinder 402 is arranged in a bevel edge shape. After the spiral member 303 rotates and cuts into the corresponding soil layer, the sample fixing cylinder 402 penetrates into the soil layer under the drive of the sample fixing cylinder 401 to cut off the soil sample embedded in the spiral member 303, and then the soil sample is fixedly stored in the space formed by the spiral member 303 and the sample fixing cylinder 402.

[0045] In the present invention, the lifting of the sampling assembly 3 is effectively controlled through the setting of the lifting bracket 2. During the sampling process, the piston rod ends of the lifting drive cylinders 201 retract to drive the cross beam 202, the drive motor 301, and the drill rod 302 to descend; when the drilling part 3022 of the drill rod 302 contacts the soil, the drive motor 301 starts to rotate forward at high speed to drive the drill rod 302 to rotate; during the downward rotation of the drill rod 302, first, the drilling part 3022 forms a drilling action in the soil and compacts the soil at the drilling position; then, the sampling part 3021 rotates and descends into the soil layer, and the spiral member 303 fixed on the sampling part 3021 rotates and cuts into the compacted soil; then the lifting drive cylinders 201 and the drive motor 301 stop operating respectively, and the piston rod ends of the sample fixing cylinders 401 extend to drive the sample fixing cylinder 402 to penetrate into the soil layer, and then the soil layer outside the spiral member 303 is cut off; finally, the sample fixing cylinders 401 stop operating, and the piston rod ends of the lifting drive cylinders 201 extend to drive the drill rod 302 and the sample fixing cylinder 402 to leave the soil layer together.

[0046] The compaction of the soil layer is achieved through the drilling part 3022 and the connection part between the drilling part 3022 and the sampling part 3021; then, the detachable connection with the sampling part 3021 is realized through the inner end of the non-standard screw part 303; and the grooved setting at the outer end of the screw part 303 is used to achieve the rotary cutting sampling of the compacted soil layer; finally, the intervention of the sample fixing cylinder 402 is used to fix the soil sample embedded in the groove of the screw part 303, so as to effectively ensure that the soil samples at different height positions do not mix when leaving the soil layer, and to accurately sample the soil samples effectively.

[0047] The bottom end of the drilling part 3022 of the drill pipe 302 is pointed and provided with corresponding drilling teeth 5. The diameter of the sampling part 3021 of the drill pipe 302 is larger than that of the drilling part 3022, and the connection part between the sampling part 3021 and the drilling part 3022 is arranged in a slope shape.

[0048] The piston rod ends of the sample fixing oil cylinder 401 are respectively fixedly connected with corresponding fixing ear plates 6, and the upper sides of both sides of the sample fixing cylinder 402 are respectively fixedly connected with connection ear plates 7 adapted to the fixing ear plates 6, and the connection ear plates 7 are fixedly locked to the corresponding fixing ear plates 6 through locking bolts 8.

[0049] An inverted T-shaped groove 9 is spirally arranged on the outer side wall of the sampling part 3021 of the drill pipe 302, and the inner end of the screw part 303 is arranged in a shape adapted to the inverted T-shaped groove 9 and spirally inserted into the inverted T-shaped groove 9.

[0050] The top end of the inverted T-shaped groove 9 extends to the lower side of the top end of the sampling part 3021, and the top of the screw part 303 is fixedly abutted against the top end of the inverted T-shaped groove 9, and the bottom end of the screw part 303 is fixedly connected to the bottom side of the sampling part 3021 through corresponding screws 10.

[0051] An inverted T-shaped groove 9 is spirally arranged on the outer side wall of the sampling part of the drill pipe 302 of the present invention, and the top end of the inverted T-shaped groove 9 extends to the lower side of the top end of the sampling part 3021, so that the top of the screw part 303 can be fixedly abutted against the top end of the inverted T-shaped groove 9. At this time, only by using corresponding screws 10 to fixedly connect the bottom end of the screw part 303 to the bottom side of the sampling part 3021 can the stable detachable installation of the screw part 303 be realized on the premise of simple structure and convenient disassembly and assembly.

[0052] A corresponding arc-shaped panel 11 is fixedly connected to the outer side of the top of the spiral member 303. Corresponding pin holes 12 are respectively provided between the upper side of the sample-fixing cylinder 402 and the arc-shaped panel 11, and corresponding fixing pins (not marked) are detachably installed at the pin holes 12. The driving motor 301 is a forward and reverse variable-speed motor.

[0053] After sampling is completed, the screw 10 can be directly removed, and the fixing pin is fixedly inserted between the pin hole 12 of the sample-fixing cylinder 402 and the arc-shaped panel 11 to form an anti-rotation limit for the arc-shaped panel 11 and the spiral member 303. Then, the driving motor 301 starts to rotate reversely at a low speed, and the piston rod ends of the lifting driving oil cylinder 201 and the sample-fixing oil cylinder 401 synchronously extend, so that the spiral member 303, the soil sample embedded in the spiral member 303, and the sample-fixing cylinder 402 sleeved outside the spiral member 303 can leave the sampling part 3021 of the drill pipe 302 together, so as to finally complete the sampling operation, and the sampled soil sample is directly stored in the space formed by the spiral member 303 and the sample-fixing cylinder 402. Therefore, it is effectively convenient for the loading and sample delivery operations of the soil sample after sampling, and effectively ensures that the soil sample is not contaminated during the loading and sample delivery processes, so as to ensure the accuracy of the subsequent test data.

[0054] Embodiment 2

[0055] A soil sampling method for soil remediation detection, based on the soil sampling device for soil remediation detection described in the above Embodiment 1, includes the following specific steps:

[0056] S1. After moving the soil sampling mechanism to above the corresponding sampling position through the moving vehicle body 1, the moving vehicle body 1 stops operating;

[0057] S2. The piston rod end of the lifting driving oil cylinder 201 retracts to drive the cross beam 202, the driving motor 301, and the drill pipe 302 to move downward;

[0058] S3. When the drilling part 3022 of the drill pipe 302 contacts the soil, the driving motor 301 starts to rotate forward at a high speed to drive the drill pipe 302 to rotate. During the rotational downward movement of the drill pipe 302, first, the drilling part 3022 forms a drilling action in the soil and compacts the soil at the drilling position. Then, the sampling part 3021 rotates downward into the soil layer, and the spiral member 303 fixed on the sampling part 3021 rotates and cuts into the compacted soil;

[0059] S4. The lifting driving oil cylinder 201 and the driving motor 301 stop operating respectively, and the piston rod end of the sample-fixing oil cylinder 401 extends to drive the sample-fixing cylinder 402 to penetrate into the soil layer, so as to perform a truncation treatment on the soil layer outside the spiral member 303;

[0060] In S5, the sample-fixing oil cylinder 401 stops operating, and the piston rod end of the lifting drive oil cylinder 201 extends to drive the drill pipe 302 and the sample-fixing cylinder 402 to leave the soil layer together;

[0061] In S6, the screw 10 is removed, and the fixed pin is fixedly inserted between the sample-fixing cylinder 402 and the pin hole 12 of the arc panel 11. Then, the drive motor 301 starts to rotate slowly in reverse, and the piston rod end of the lifting drive oil cylinder 201 extends, and the piston rod end of the sample-fixing oil cylinder 401 extends, so that the screw member 303, the soil sample embedded in the screw member 303, and the sample-fixing cylinder 402 sleeved outside the screw member 303 leave the sampling part of the drill pipe 302 together to complete the sampling operation;

[0062] In step S7, after the sample-fixing cylinder 402 is detached from the piston rod end of the sample-fixing oil cylinder 401, the soil attached to the drill pipe 302 is cleared, and the soil sample embedded between the sample-fixing cylinder 402 and the screw member 303 is sent for inspection.

[0063] The present invention can effectively prevent soil samples at different height positions from being mixed with each other, so as to accurately sample soil samples; and can effectively facilitate the loading and sending operations of the soil samples after sampling, and effectively ensure that the soil samples are not contaminated during the loading and sending processes, so as to ensure the accuracy of subsequent detection data.

[0064] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A soil sampling device for soil remediation detection, including a mobile vehicle body (1), and corresponding sampling holes are provided on the mobile vehicle body (1), characterized in that, The soil sampling device for soil remediation detection further includes a soil sampling mechanism, which includes: A lifting bracket (2), including a lifting drive oil cylinder (201) arranged on a moving vehicle body (1) on both sides of the sampling hole. A corresponding cross beam (202) is horizontally fixed between the piston rod ends of the lifting drive oil cylinders (201); A sampling assembly (3), including a drive motor (301) fixed to the cross beam (202). The output shaft of the drive motor (301) is arranged downward and is drivingly connected to a corresponding drill rod (302). The drill rod (302) is divided into a sampling part (3021) and a drilling part (3022) according to height. A spiral member (303) arranged in a spiral shape is detachably installed on the outer side wall of the sampling part (3021). The inner end of the spiral member (303) is detachably installed on the sampling part (3021), and the outer end of the spiral member (303) is arranged in a notch shape; A sample fixing assembly (4), including sample fixing oil cylinders (401) fixedly installed on the cross beam (202) on both sides of the drive motor (301). The piston rod ends of the sample fixing oil cylinders (401) are arranged downward and are connected downward with a sample fixing cylinder (402) that can move sleeved on the outer side of the spiral member (303). The bottom end of the sample fixing cylinder (402) is arranged in a bevel edge shape. After the spiral member (303) rotates and cuts into the corresponding soil layer, the sample fixing cylinder (402) penetrates into the soil layer under the drive of the sample fixing oil cylinder (401) to cut off the soil sample embedded in the spiral member (303), and then the soil sample is fixedly stored in the space formed by the spiral member (303) and the sample fixing cylinder (402); A corresponding inverted T-shaped groove (9) is spirally arranged on the outer side wall of the sampling part (3021) of the drill rod (302). The inner end of the spiral member (303) is arranged in a shape adapted to the inverted T-shaped groove (9) and is spirally inserted into the inverted T-shaped groove (9); The top end of the inverted T-shaped groove (9) extends to the lower side of the top end of the sampling part (3021). The top of the spiral member (303) is fixedly abutted against the top end of the inverted T-shaped groove (9), and the bottom end of the spiral member (303) is fixedly connected to the bottom side of the sampling part (3021) through corresponding screws (10); A corresponding arc-shaped panel (11) is fixedly connected to the outer side of the top of the spiral member (303). Corresponding pin holes (12) are respectively arranged between the upper side of the sample fixing cylinder (402) and the arc-shaped panel (11), and corresponding fixed pins are detachably installed at the pin holes (12); 2. The soil sampling device for soil remediation detection according to claim 1, characterized in that, The bottom end of the drilling part (3022) of the drill rod (302) is arranged in a pointed shape and is provided with corresponding drilling teeth (5); 3. A soil sampling device for soil remediation detection according to claim 1, wherein, The diameter of the sampling part (3021) of the drill rod (302) is larger than the diameter of the drilling part (3022), and the connection between the sampling part (3021) and the drilling part (3022) is arranged in a slope shape.

4. A soil sampling device for soil remediation detection according to claim 1, characterized in that, The piston rod ends of the sample fixing oil cylinders (401) are fixedly connected with corresponding fixed ear plates (6) respectively. The upper ends on both sides of the sample fixing cylinder (402) are fixedly connected with connecting ear plates (7) adapted to the fixed ear plates (6), and the connecting ear plates (7) are fixedly locked to the corresponding fixed ear plates (6) through locking bolts (8).

5. A soil sampling device for soil remediation detection according to claim 1, characterized in that, The driving motor (301) is a forward and reverse variable speed motor.

6. A soil sampling method for soil remediation detection, based on the soil sampling device for soil remediation detection described in claim 5 above, characterized in that, It includes the following specific steps: S1. After moving the soil sampling mechanism to the upper part of the corresponding sampling position by the moving vehicle body (1), the moving vehicle body (1) stops operating. S2. The piston rod end of the lifting driving oil cylinder (201) retracts to drive the cross beam (202), the driving motor (301), and the drill pipe (302) to move downward. S3. When the drilling part (3022) of the drill pipe (302) contacts the soil, the driving motor (301) starts to rotate forward at high speed to drive the drill pipe (302) to rotate. During the rotational downward movement of the drill pipe (302), first, the drilling part (3022) forms a drilling action in the soil and compacts the soil at the drilling position. Then, the sampling part (3021) rotates downward into the soil layer, and the spiral part (303) fixed on the sampling part (3021) rotates and cuts into the compacted soil. S4. The lifting driving oil cylinder (201) and the driving motor (301) stop operating respectively, and the piston rod end of the sample fixing oil cylinder (401) extends to drive the sample fixing cylinder (402) to penetrate into the soil layer, thereby truncating the soil layer outside the spiral part (303). S5. The sample fixing oil cylinder (401) stops operating, and the piston rod end of the lifting driving oil cylinder (201) extends to drive the drill pipe (302) and the sample fixing cylinder (402) to leave the soil layer together. S6. The screw (10) is disassembled, and the fixed pin is fixedly inserted between the sample fixing cylinder (402) and the pin hole (12) of the arc-shaped panel (11). Then, the driving motor (301) starts to rotate reversely at low speed, and the piston rod end of the lifting driving oil cylinder (201) extends and the piston rod end of the sample fixing oil cylinder (401) extends, so that the spiral part (303), the soil sample embedded in the spiral part (303), and the sample fixing cylinder (402) sleeved outside the spiral part (303) leave the sampling part of the drill pipe (302) together to complete the sampling operation.

7. A soil sampling method for soil remediation detection according to claim 6, characterized in that, After the step S6, there is also a step S7. After detaching the sample fixing cylinder (402) from the piston rod end of the sample fixing oil cylinder (401), the soil attached to the drill pipe (302) is cleared, and the soil sample embedded between the sample fixing cylinder (402) and the spiral part (303) is sent for inspection.

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