Soil sampling device for soil remediation detection and sampling method thereof

Abstract

The invention discloses a soil sampling device for soil remediation detection and a sampling method thereof, the soil sampling device comprises a mobile vehicle body and a soil sampling mechanism, the soil sampling mechanism comprises: a lifting support comprising a lifting driving oil cylinder, a cross beam is transversely and fixedly connected between piston rod ends of the lifting driving oil cylinder; the sampling assembly comprises a driving motor fixedly connected to the cross beam, an output shaft of the driving motor is in transmission connection with a drill rod, the drill rod is divided into a sampling part and a drilling part according to the height, a spiral piece is detachably installed on the outer side wall of the sampling part, and the outer end of the spiral piece is arranged in a notch shape; the sample fixing assembly comprises sample fixing oil cylinders which are arranged on the cross beam on the two sides of the driving motor, piston rod ends of the sample fixing oil cylinders are downwards connected with sample fixing barrels which are movably arranged on the outer side of the spiral part in a sleeving manner, and the bottom end parts of the sample fixing barrels are arranged in a slope cutting edge shape. The soil sample sampling device can effectively and accurately sample a soil sample, and can effectively facilitate sample loading and sample sending operation of the soil sample.

Description

Technical Field

[0001] The present invention relates to a soil sampling device for soil remediation detection, which is mainly used for accurately sampling remediated soil and can send the sampled soil samples for inspection conveniently and without pollution. Background Art

[0002] In order to effectively and accurately control the progress of soil remediation, it is generally necessary to use corresponding soil sampling devices to sample the soil during the remediation process, and to conduct corresponding tests on the sampled soil to reflect the soil remediation status, thereby effectively and accurately controlling the soil remediation.

[0003] Most of the existing soil sampling devices for soil remediation detection include a mobile body and a lifting drive cylinder or a driving motor fixed on the mobile body. The corresponding sampling tube is driven by the lifting drive cylinder or the driving motor to penetrate and insert into the soil layer, thereby sampling the soil in the remediation process. Since the soil layer in the remediation process is often relatively loose, when the sampling tube is directly inserted into the soil layer and then taken out, the soil sample embedded in the sampling tube often cannot be stably fixed in the sampling tube, resulting in easy mixing of soil samples at different heights after sampling. This is not allowed for sampling of the soil layer in the remediation process, because the detection data of soil samples at different heights in the remediation process will form different references for the subsequent remediation process, so it is required that soil samples at different heights do not mix during the sampling process.

[0004] In order to ensure the sampling accuracy, some manufacturers have begun to use sampling tubes with external sampling slots to sample soil samples. During the sampling process, first, the drill rod with an external sampling slot is inserted into the soil layer, and the soil outside the sampling slot is squeezed into the sampling tube of the drill rod through continuous rotation to accurately sample the soil sample. However, since the soil layer during the remediation process is often relatively loose, continuous rotation can only squeeze out a sampling hole outside the sampling slot, and the soil sample position cannot be stably fixed in the sampling slot of the drill rod, which is very troublesome. The existing soil sampling device for soil remediation detection still has the problem of difficulty in loading and delivering samples during actual use, and the soil samples during the delivery process are easily contaminated by the external environment due to lack of protection, which affects the accuracy of subsequent detection.

[0005] Therefore, the research purpose of the present invention is to design a soil sampling device and a sampling method for soil remediation detection that can effectively prevent soil samples at different heights from mixing with each other, thereby accurately sampling soil samples; and can effectively facilitate the loading and delivery of soil samples after sampling. 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: A soil sampling device for soil remediation detection includes a mobile body, the mobile body is provided with corresponding sampling holes, the soil sampling device for soil remediation detection also includes a soil sampling mechanism, the soil sampling mechanism includes: The lifting bracket comprises a lifting drive cylinder disposed on a movable vehicle body on both sides of the sampling hole, and a corresponding crossbeam is transversely fixedly connected between the piston rod ends of the lifting drive cylinder; The sampling assembly comprises a driving motor fixedly connected to the crossbeam, the output shaft of the driving motor is arranged downward and is drivingly connected to a corresponding drill rod, the drill rod is divided into a sampling part and a drilling part according to height, the outer side wall of the sampling part is detachably mounted with a spiral member arranged in a spiral shape, the inner end of the spiral member is detachably mounted on the sampling part, and the outer end of the spiral member is arranged in a notch shape; The sample fixing component comprises a sample fixing cylinder fixedly mounted on the cross beams on both sides of the driving motor, the piston rod end of the sample fixing cylinder is arranged downward, and is downwardly connected to a sample fixing cylinder movably sleeved on the outside of the spiral component, the bottom end of the sample fixing cylinder is arranged in the shape of an inclined cutting edge, after the spiral component 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 component, and then fix the soil sample in the space formed by the spiral component and the sample fixing cylinder.

[0008] The bottom end of the drilling part of the drill rod is pointed and provided with corresponding drilling teeth.

[0009] The diameter of the sampling part of the drill rod is larger than the diameter of the drilling part, and the connection between the sampling part and the drilling part is arranged in a slope shape.

[0010] The piston rod ends of the solid sample oil cylinder are respectively fixedly connected with corresponding fixed ear plates, and the upper ends of both sides of the solid sample tube are respectively fixedly connected with connecting ear plates adapted to the fixed ear plates, and the connecting ear plates are fixedly locked to the corresponding fixed ear plates by locking bolts.

[0011] The outer side wall of the sampling part of the drill rod is spirally provided with a corresponding inverted T-shaped groove, and the inner end of the spiral member is configured to be in a shape matching the inverted T-shaped groove and is spirally inserted into the inverted T-shaped groove.

[0012] The top end of the inverted T-shaped groove extends to the lower side of the top end of the sampling part, the top of the spiral member is fixedly abutted against the top end of the inverted T-shaped groove, and the bottom end of the spiral member is fixedly connected to the bottom side of the sampling part by corresponding screws.

[0013] A corresponding arc panel is fixedly connected to the outer side of the top of the spiral component, and corresponding latch holes are respectively arranged between the upper side of the sample fixing tube and the arc panel, and corresponding fixed latches are detachably installed at the latch holes.

[0014] The driving motor is a forward and reverse speed motor.

[0015] 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: S1, after the soil sampling mechanism is moved to above the corresponding sampling position by the mobile vehicle, the mobile vehicle stops operating; S2, the piston rod end of the lifting drive cylinder retracts to drive the crossbeam, drive motor and drill rod downward; S3, when the drilling part of the drill rod contacts the soil, the drive motor starts high-speed forward rotation to drive the drill rod to rotate; during the downward rotation 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 into the soil layer, and the spiral member fixed on the sampling part rotates and cuts into the compacted soil; S4, the lifting drive cylinder and the drive motor are stopped respectively, and the piston rod end of the sample fixing cylinder is extended to drive the sample fixing tube to penetrate into the soil layer, thereby cutting off the soil layer outside the spiral element; S5, the sample fixing cylinder stops operating, and the piston rod end of the lifting drive cylinder extends to drive the drill rod and the sample fixing cylinder to leave the soil layer together; S6, remove the screw and fix the fixing pin between the sample fixing tube and the pin hole of the arc panel, then, start the low-speed reverse rotation of the driving motor, and extend the piston rod end of the lifting driving cylinder and the piston rod end of the sample fixing cylinder, so that the spiral component, the soil sample embedded in the spiral component, and the sample fixing tube sleeved on the outside of the spiral component leave the sampling part of the drill rod together to complete the sampling operation.

[0016] The step S6 further includes a step S7, in which after the solid sample tube is detached from the piston rod end of the solid sample oil cylinder, the soil attached to the drill rod is removed, and the soil sample embedded between the solid sample tube and the spiral member is sent for inspection.

[0017] Advantages of the present invention: 1) The present invention effectively controls the lifting of the sampling component through the setting of the lifting bracket. During the sampling process, the piston rod end of the lifting drive cylinder is retracted to drive the crossbeam, the drive motor and the drill rod to move downward; when the drilling part of the drill rod contacts the soil, the drive motor starts high-speed forward rotation to drive the drill rod to rotate; during the downward rotation of the drill rod, first, the drilling part forms a drilling action in the soil and compacts the soil at the drilling position; thereafter, the sampling part rotates downward into the soil layer, and the spiral member fixed on the sampling part rotates and cuts into the compacted soil; then the lifting drive cylinder and the drive motor are stopped respectively, and the piston rod end of the solid sample cylinder is extended to drive the solid sample tube to penetrate into the soil layer, and then the soil layer outside the spiral member is cut off; finally, the solid sample cylinder is stopped, and the piston rod end of the lifting drive cylinder is extended to drive the drill rod and the solid sample tube to leave the soil layer together.

[0018] The soil layer is compacted through the drilling part and the connection between the drilling part and the sampling part; the inner end of the non-standard spiral part is used to achieve a detachable connection with the drill rod sampling part; and the notch-shaped setting of the outer end of the spiral part is used to achieve rotary cutting sampling of the compacted soil layer; finally, the soil sample embedded in the notch of the spiral part is fixed through the intervention of a sample fixing tube, thereby effectively ensuring that soil samples at different heights do not mix when leaving the soil layer, so as to effectively and accurately sample the soil samples.

[0019] 2) The outer wall of the drill pipe sampling part of the present invention is spirally provided with a corresponding inverted T-shaped groove, and the inner end of the spiral element is set to a shape compatible with the inverted T-shaped groove and is spirally inserted into the inverted T-shaped groove; 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 element can be fixedly abutted against the top end of the inverted T-shaped groove. At this time, it is only necessary to use corresponding screws to fix the bottom end of the spiral element to the bottom side of the sampling part, thereby realizing a stable and detachable installation of the spiral element under the premise of simple structure and convenient disassembly and assembly.

[0020] 3) A corresponding arc panel is fixedly connected to the outer side of the top of the spiral member of the present invention, and corresponding pin holes are respectively provided between the upper side of the solid sample tube and the arc panel, and the corresponding fixed pins are detachably installed at the pin holes. In this way, after the sampling is completed, the screw can be directly removed, and the fixed pin can be fixedly inserted between the solid sample tube and the pin hole of the arc panel to form an anti-rotation limit for the arc panel and the spiral member; then, the driving motor starts the low-speed reverse rotation, and the lifting drive cylinder and the piston rod end of the solid sample cylinder are extended synchronously, so that the spiral member, the soil sample embedded in the spiral member, and the solid sample tube sleeved on the outside of the spiral member can leave the sampling part of the drill rod together to finally complete the sampling operation, and the sampled soil sample is directly stored in the space formed by the spiral member and the solid sample tube, so that it can effectively facilitate the loading and delivery of the soil sample after sampling, and effectively ensure that the soil sample is not contaminated during the loading and delivery process, so as to ensure the accuracy of the subsequent detection data. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention.

[0022] Figure 2 It is a front view of the present invention.

[0023] Figure 3 It is a cross-sectional view of the present invention.

[0024] Figure 4 This is an exploded view of the parts of the sampling component.

[0025] Figure 5 It is a structural schematic diagram of a spiral member with an arc panel fixedly connected thereto.

[0026] Figure 6 It is a structural schematic diagram of a spiral member being locked by a screw.

[0027] In the accompanying drawings: a mobile body 1, a lifting bracket 2, a lifting drive cylinder 201, a crossbeam 202, a sampling assembly 3, a drive motor 301, a drill rod 302, a sampling part 3021, a drilling part 3022, a screw 303, a sample fixing assembly 4, a sample fixing cylinder 401, a sample fixing tube 402, drilling teeth 5, a fixing ear plate 6, a connecting ear plate 7, a locking bolt 8, an inverted T-shaped groove 9, a screw 10, a curved panel 11, and a pin hole 12. DETAILED DESCRIPTION

[0028] In order to facilitate understanding by those skilled in the art, the structure of the present invention is further described in detail with reference to the embodiments in conjunction with the accompanying drawings: Embodiment 1 refer to Figure 1-6A soil sampling device for soil remediation detection includes a mobile body 1, and the mobile body 1 is provided with corresponding sampling holes. The soil sampling device for soil remediation detection also includes a soil sampling mechanism, and the soil sampling mechanism includes: The lifting bracket 2 comprises a lifting drive cylinder 201 disposed on the mobile vehicle body 1 on both sides of the sampling hole, and a corresponding crossbeam 202 is transversely fixedly connected between the piston rod ends of the lifting drive cylinder 201; The sampling assembly 3 comprises a driving motor 301 fixedly connected to the crossbeam 202, the output shaft of the driving 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, the outer side wall of the sampling part 3021 is detachably mounted with a spiral member 303 arranged in a spiral shape, the inner end of the spiral member 303 is detachably mounted on the sampling part 3021, and the outer end of the spiral member 303 is arranged in a notch shape; The sample fixing component 4 comprises a sample fixing cylinder 401 fixedly mounted on the crossbeam 202 on both sides of the driving motor 301, the piston rod end of the sample fixing cylinder 401 is arranged downward, and is downwardly connected to a sample fixing barrel 402 movably sleeved on the outside of the spiral member 303, the bottom end of the sample fixing barrel 402 is arranged in the shape of an inclined cutting edge, after the spiral member 303 rotates and cuts into the corresponding soil layer, the sample fixing barrel 402 penetrates into the soil layer under the drive of the sample fixing cylinder 401, so as to cut off the soil sample embedded in the spiral member 303, and then fix the soil sample in the space formed by the spiral member 303 and the sample fixing barrel 402.

[0029] The present invention effectively controls the lifting of the sampling assembly 3 by setting the lifting bracket 2. During the sampling process, the piston rod end of the lifting drive cylinder 201 is retracted to drive the crossbeam 202, the drive motor 301, and the drill rod 302 to move downward; when the drilling part 3022 of the drill rod 302 contacts the soil, the drive motor 301 starts high-speed forward rotation 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 The sampling part 3021 rotates downward and enters the soil layer, and the spiral part 303 fixed on the sampling part 3021 rotates and cuts into the compacted soil; then the lifting drive cylinder 201 and the driving motor 301 are stopped respectively, and the piston rod end of the solid sample cylinder 401 is extended to drive the solid sample tube 402 to penetrate into the soil layer, and then the soil layer outside the spiral part 303 is cut off; finally, the solid sample cylinder 401 is stopped, and the piston rod end of the lifting drive cylinder 201 is extended to drive the drill rod 302 and the solid sample tube 402 to leave the soil layer together.

[0030] The soil layer is compacted through the drilling part 3022 and the connection between the drilling part 3022 and the sampling part 3021; ​​the inner end of the non-standard screw 303 is used to achieve a detachable connection with the sampling part 3021; ​​and the notch-shaped setting of the outer end of the screw 303 is used to achieve rotary cutting sampling of the compacted soil layer; finally, the soil sample embedded in the notch of the screw 303 is fixed through the intervention of the sample fixing tube 402, thereby effectively ensuring that soil samples at different heights do not mix when leaving the soil layer, so as to effectively and accurately sample the soil samples.

[0031] The bottom end of the drilling portion 3022 of the drill rod 302 is pointed and provided with corresponding drilling teeth 5. The diameter of the sampling portion 3021 of the drill rod 302 is larger than that of the drilling portion 3022, and the connection between the sampling portion 3021 and the drilling portion 3022 is sloped.

[0032] The piston rod ends of the solid sample cylinder 401 are respectively fixedly connected with corresponding fixed ear plates 6, and the upper ends of both sides of the solid sample tube 402 are respectively fixedly connected with connecting ear plates 7 adapted to the fixed ear plates 6, and the connecting ear plates 7 are fixed and locked to the corresponding fixed ear plates 6 by locking bolts 8.

[0033] The outer wall of the sampling portion 3021 of the drill rod 302 is spirally provided with a corresponding inverted T-shaped groove 9 , and the inner end of the spiral member 303 is configured to be in a shape matching the inverted T-shaped groove 9 and is spirally inserted into the inverted T-shaped groove 9 .

[0034] The top end of the inverted T-shaped groove 9 extends to the lower side of the top end of the sampling portion 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 portion 3021 by a corresponding screw 10.

[0035] The outer wall of the sampling portion of the drill rod 302 of the present invention is spirally provided with a corresponding inverted T-shaped groove 9, and the top end of the inverted T-shaped groove 9 extends to the lower side of the top end of the sampling portion 3021, so that the top of the spiral member 303 can be fixedly abutted against the top end of the inverted T-shaped groove 9. At this time, it is only necessary to use the corresponding screws 10 to fix the bottom end of the spiral member 303 to the bottom side of the sampling portion 3021, thereby realizing a stable and detachable installation of the spiral member 303 under the premise of simple structure and convenient disassembly and assembly.

[0036] A corresponding arc panel 11 is fixedly connected to the top outer side of the spiral member 303, and corresponding latch holes 12 are respectively arranged between the upper side of the fixed sample tube 402 and the arc panel 11, and corresponding fixed latches (not marked) are detachably installed at the latch holes 12. The driving motor 301 is a forward and reverse speed motor.

[0037] After the sampling is completed, the screw 10 can be directly removed, and the fixing pin can be fixedly inserted between the pin hole 12 of the fixed sample cylinder 402 and the arc panel 11 to form an anti-rotation limit for the arc panel 11 and the spiral member 303; then, the driving motor 301 starts the low-speed reverse rotation, and the lifting driving cylinder 201 and the piston rod end of the fixed sample cylinder 401 are synchronously extended, so that the spiral member 303, the soil sample embedded in the spiral member 303, and the fixed sample cylinder 402 sleeved on the outer side of the spiral member 303 can leave the sampling part 3021 of the drill rod 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 fixed sample cylinder 402, so that the sampling and sample delivery operations of the sampled soil sample can be effectively facilitated, and the soil sample can be effectively ensured not to be contaminated during the sampling and sample delivery process, so as to ensure the accuracy of the subsequent detection data.

[0038] Embodiment 2 A soil sampling method for soil remediation detection, based on the soil sampling device for soil remediation detection described in the first embodiment, comprises the following specific steps: S1, after the soil sampling mechanism is moved to above the corresponding sampling position by the mobile vehicle 1, the mobile vehicle 1 stops operating; S2, the piston rod end of the lifting drive cylinder 201 retracts to drive the crossbeam 202, the drive motor 301, and the drill rod 302 downward; S3, when the drilling part 3022 of the drill rod 302 contacts the soil, the drive motor 301 starts high-speed forward rotation 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 downward into the soil layer, and the spiral member 303 fixed on the sampling part 3021 rotates and cuts into the compacted soil; S4, the lifting drive cylinder 201 and the drive motor 301 are stopped respectively, and the piston rod end of the sample fixing cylinder 401 is extended to drive the sample fixing cylinder 402 to penetrate into the soil layer, thereby cutting off the soil layer outside the spiral member 303; S5, the sample fixing cylinder 401 stops operating, and the piston rod end of the lifting drive cylinder 201 extends to drive the drill rod 302 and the sample fixing cylinder 402 to leave the soil layer together; S6, remove the screw 10, and fix the fixing pin between the sample fixing barrel 402 and the pin hole 12 of the arc panel 11, then, the drive motor 301 starts low-speed reverse rotation, and the piston rod end of the lifting drive cylinder 201 and the piston rod end of the sample fixing cylinder 401 extend, so that the spiral member 303, the soil sample embedded in the spiral member 303, and the sample fixing barrel 402 sleeved on the outside of the spiral member 303 leave the sampling part of the drill rod 302 together, so as to complete the sampling operation; Step S7, after the sample fixing tube 402 is detached from the piston rod end of the sample fixing oil cylinder 401, the soil attached to the drill rod 302 is removed, and the soil sample embedded between the sample fixing tube 402 and the spiral member 303 is sent for inspection.

[0039] The present invention can effectively prevent soil samples at different heights from mixing with each other, thereby accurately sampling the soil samples; and can effectively facilitate the loading and delivery operations of the soil samples after sampling, and effectively ensure that the soil samples are not contaminated during the loading and delivery processes, thereby ensuring the accuracy of subsequent test data.

[0040] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A soil sampling device for soil remediation detection, comprising a mobile body (1), wherein the mobile body (1) is provided with corresponding sampling holes, characterized in that: The soil sampling device for soil remediation detection also includes a soil sampling mechanism, and the soil sampling mechanism includes: The lifting bracket (2) comprises a lifting drive cylinder (201) arranged on the moving vehicle body (1) on both sides of the sampling hole, and a corresponding crossbeam (202) is transversely fixedly connected between the piston rod ends of the lifting drive cylinder (201); A sampling assembly (3) comprises a driving motor (301) fixedly connected to the crossbeam (202); the output shaft of the driving motor (301) is arranged downward and is drivingly connected to a corresponding drill rod (302); the drill rod (302) is divided into a sampling portion (3021) and a drilling portion (3022) according to height; a spiral member (303) arranged in a spiral shape is detachably mounted on the outer wall of the sampling portion (3021); the inner end of the spiral member (303) is detachably mounted on the sampling portion (3021); and the outer end of the spiral member (303) is arranged in a notch shape; The sample fixing component (4) comprises a sample fixing oil cylinder (401) fixedly mounted on the cross beams (202) on both sides of the driving motor (301); the piston rod end of the sample fixing oil cylinder (401) is arranged downwards and is connected downwards to a sample fixing cylinder (402) which is movably sleeved on the outside of the spiral member (303); the bottom end of the sample fixing cylinder (402) is arranged in the shape of an inclined cutting edge; 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), thereby fixing and storing the soil sample in the space formed by the spiral member (303) and the sample fixing cylinder (402).

2. A soil sampling device for soil remediation detection according to claim 1, characterized in that: The bottom end of the drilling portion (3022) of the drill rod (302) is pointed and provided with corresponding drilling teeth (5).

3. A soil sampling device for soil remediation detection according to claim 1, characterized in that: The diameter of the sampling portion (3021) of the drill rod (302) is greater than the diameter of the drilling portion (3022), and the connection between the sampling portion (3021) and the drilling portion (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 cylinder (401) are respectively fixedly connected to corresponding fixing ear plates (6), and the upper ends of both sides of the sample fixing cylinder (402) are respectively fixedly connected to connecting ear plates (7) that match the fixing ear plates (6), and the connecting ear plates (7) are fixedly locked to the corresponding fixing ear plates (6) by locking bolts (8).

5. A soil sampling device for soil remediation detection according to claim 1, characterized in that: The outer wall of the sampling portion (3021) of the drill rod (302) is spirally provided with a corresponding inverted T-shaped groove (9), and the inner end portion of the spiral member (303) is configured to be in a shape matching the inverted T-shaped groove (9) and is spirally inserted into the inverted T-shaped groove (9).

6. A soil sampling device for soil remediation detection according to claim 5, characterized in that: The top end of the inverted T-shaped groove (9) extends to the lower side of the top end of the sampling portion (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 portion (3021) by a corresponding screw (10).

7. A soil sampling device for soil remediation detection according to claim 6, characterized in that: A corresponding arc panel (11) is fixedly connected to the outer side of the top of the spiral member (303), and corresponding latch holes (12) are respectively provided between the upper side of the sample fixing tube (402) and the arc panel (11), and corresponding fixing latches are detachably mounted at the latch holes (12).

8. A soil sampling device for soil remediation detection according to claim 7, characterized in that: The driving motor (301) is a forward and reverse speed motor.

9. A soil sampling method for soil remediation detection, based on the soil sampling device for soil remediation detection according to claim 8, characterized in that: The following specific steps are included: S1, after the soil sampling mechanism is moved to above a corresponding sampling position by the mobile vehicle (1), the mobile vehicle (1) stops operating; S2, the piston rod end of the lifting drive cylinder (201) retracts to drive the crossbeam (202), the drive motor (301), and the drill rod (302) downward; S3, when the drilling portion (3022) of the drill rod (302) contacts the soil, the drive motor (301) starts high-speed forward rotation to drive the drill rod (302) to rotate; during the downward rotation of the drill rod (302), first, the drilling portion (3022) forms a drilling action in the soil and compacts the soil at the drilling position; then, the sampling portion (3021) rotates downward to enter the soil layer, and the spiral member (303) fixed on the sampling portion (3021) rotates and cuts into the compacted soil; S4, the lifting drive cylinder (201) and the drive motor (301) are stopped respectively, and the piston rod end of the sample fixing cylinder (401) is extended to drive the sample fixing cylinder (402) to penetrate into the soil layer, thereby cutting off the soil layer outside the spiral member (303); S5, the sample fixing cylinder (401) stops operating, and the piston rod end of the lifting drive cylinder (201) extends to drive the drill rod (302) and the sample fixing cylinder (402) to leave the soil layer together; S6, the screw (10) is removed, and the fixing 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 low-speed reverse rotation, and the piston rod end of the lifting drive cylinder (201) and the piston rod end of the sample fixing cylinder (401) are extended, so that the spiral member (303), the soil sample embedded in the spiral member (303), and the sample fixing cylinder (402) sleeved on the outside of the spiral member (303) leave the sampling part of the drill rod (302) together, thereby completing the sampling operation.

10. A soil sampling method for soil remediation detection according to claim 9, characterized in that: The step S6 is followed by a step S7, wherein 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 rod (302) is removed, and the soil sample embedded between the sample fixing cylinder (402) and the spiral member (303) is sent for inspection.

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