CN114371029A

CN114371029A - In-situ soil non-disturbance sampling equipment

Info

Publication number: CN114371029A
Application number: CN202210279267.3A
Authority: CN
Inventors: 张勇; 孙美慧; 丁月; 张磊; 戴光玉
Original assignee: Anhui Haifeng Analysis And Testing Technology Co ltd
Current assignee: Anhui Haifeng Analysis And Testing Technology Co ltd
Priority date: 2022-03-22
Filing date: 2022-03-22
Publication date: 2022-04-19
Anticipated expiration: 2042-03-22
Also published as: CN114371029B

Abstract

The invention discloses in-situ soil non-disturbance sampling equipment which comprises an annular supporting seat, wherein a plurality of supporting assemblies are arranged on the outer side of the supporting seat, a cylindrical barrel body in threaded connection is arranged on the inner side of the supporting seat, and the inner diameter of the upper end of the barrel body is larger than that of the lower end of the barrel body. According to the soil component testing device, the sampling tube moves synchronously along with the movement of the barrel through the arrangement of the lifting seat, and the sampling tube does not rotate when the barrel rotates, so that the friction between the inner wall of the sampling tube and the soil is reduced when the soil is drilled, volatile substances can be kept in the soil, and the soil component testing precision is improved.

Description

In-situ soil non-disturbance sampling equipment

Technical Field

The invention relates to the technical field of soil test equipment, in particular to in-situ soil non-disturbance sampling equipment.

Background

The in-situ soil sample plays an important role in the fields of soil remediation, soil structure research, wetland investigation, coastal zone investigation, agricultural soil investigation, urban environment investigation, environmental monitoring and detection and the like. In-situ soil sampling technology has been a difficult point for investigation and sampling.

The normal position soil sample is gathered to the conventional mode utilization cutting ring geotome, drives through drive arrangement and takes a sample in the rotatory soil that bores, constantly rubs with soil at the in-process sampling pipe of getting of boring, can produce more heat, causes the easy volatile substances in the soil to run off to influence the accuracy of soil composition survey.

Disclosure of Invention

The invention aims to: in order to solve the problems, the in-situ soil non-disturbance sampling device is provided.

In order to achieve the purpose, the invention adopts the following technical scheme:

an in-situ soil non-disturbance sampling device comprises an annular supporting seat, wherein a plurality of supporting components are arranged on the outer side of the supporting seat, a cylindrical barrel body in threaded connection is arranged on the inner side of the supporting seat, the inner diameter of the upper end of the barrel body is larger than that of the lower end of the barrel body, a through hole is formed in the central axis of the barrel body, a first annular groove and a second annular groove are formed in the bottom of the barrel body, a detachable sampling pipe is arranged inside the through hole, the first annular groove is located on the outer side of the second annular groove, a plurality of baffle plates which are uniformly distributed in an annular shape are arranged inside the first annular groove, the baffle plates can be combined into a conical structure, a cutting ring is arranged inside the second annular groove, a plurality of tooth sheets are arranged at the bottom of the cutting ring, a first driving component and a second driving component which drive the baffle plates and the cutting ring to move up and down are arranged at the top of the barrel body, the upper end of the cylinder body is provided with a limiting component matched with the first driving component and the second driving component; the first driving assembly comprises a plurality of connecting rods which are respectively rotatably connected with the plurality of baffles, the upper ends of the plurality of connecting rods are respectively rotatably connected with a first sliding rod through torsion springs, the first sliding rods penetrate through the barrel body in the axial direction and extend to the upper part of the barrel body, the top ends of the plurality of first sliding rods are fixedly connected with a same first annular sheet, and a plurality of first springs are arranged between the barrel body and the first annular sheet; the second driving assembly comprises a plurality of second sliding rods fixedly connected with the cutting ring, the upper ends of the second sliding rods penetrate through the barrel along the axial direction of the barrel, the top ends of the second sliding rods are fixedly connected with a same second annular sheet, and a plurality of second springs are arranged between the barrel and the second annular sheet; spacing subassembly is including tying with first annular piece and second annular piece fixed connection's first spacing respectively and the spacing bolt of second, the inside of barrel has the spout that sets up along radial direction, the inside of spout is provided with the push rod that moves along the radial direction of barrel, first spacing bolt and the spacing bolt of second all can slide from the top of barrel and run through to the inside of spout to the lower extreme of first spacing bolt and the spacing bolt of second is fixedly connected with respectively can with the second buckle of the first buckle of spout joint, the side of push rod has the recess.

Preferably, the supporting component is provided with at least three to encircle supporting seat evenly distributed, the supporting component include with supporting seat fixed connection's rotation seat, it is connected with the bracing piece to rotate on the seat, the upper end that barrel one side was kept away from to the bracing piece is provided with the dog, the lower extreme of bracing piece is provided with the callus on the sole.

Preferably, the top of supporting seat is provided with a plurality of annular evenly distributed's locating part, and is a plurality of the upper end of locating part is provided with same annular lift seat, the top fixedly connected with L shape's of lift seat dead lever, and the annular sliding sleeve of other end fixedly connected with of dead lever, the through-hole distributes with the sliding sleeve coaxial line, the lift seat passes through the bearing and is connected with the barrel rotation.

Preferably, the sampling tube consists of two semicircular tube pieces with the same shape, the lower end of each tube piece is provided with an opening, and the semicircular edges at the upper end and the lower end of each tube piece are provided with protrusions.

Preferably, the top of sliding sleeve is rotated and is connected with the layering, the layering sets up along the radial direction of sliding sleeve to the open end of layering passes through fastening bolt and sliding sleeve fixed connection.

Preferably, the external diameter of sampling tube up end is greater than the internal diameter of sliding sleeve, two of section of jurisdiction lower extreme two the annular structure laminating through-hole's that the arch is constituteed inner wall.

Preferably, the outside of lift seat is rotated and is connected with the gear, the top fixedly connected with connecting block of gear, and the top of connecting block has the draw-in groove, the connecting block drives the gear rotation through the drive spanner with draw-in groove complex, the outside cover of barrel is equipped with the ring gear with gear engagement.

Preferably, the baffle plate is in sliding contact with the inner wall of the opening at the lower end of the first annular groove, and the thickness of the baffle plate is 3-5 mm.

Preferably, the locating part is the columniform body of rod, the lower extreme and the supporting seat fixed connection of the body of rod, the lift seat is run through to the upper end of the body of rod to the body of rod and lift seat sliding connection.

Preferably, the limiting part is a multi-section telescopic rod, and the upper end and the lower end of the multi-section telescopic rod are respectively and fixedly connected with the lifting seat and the supporting seat.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. this application sets up annular supporting seat, the inboard setting at the supporting seat is through closing the barrel that reciprocates soon, and set up dismantled and assembled sampling tube in the barrel, the connection of sampling tube through the lift seat is along with barrel synchronous motion, when the barrel is rotatory, the sampling tube irrotational, so when boring soil, can reduce the friction of sampling tube inner wall and soil, thereby make volatile materials can remain in soil, and then improve the precision that soil composition detected, the sampling tube comprises the same semi-circular section of jurisdiction of two shapes simultaneously, the sampling tube is taking off the rear and just being separated, thereby the staff of being convenient for takes a sample, and do not have extra extrusion during the sample, the integrality of soil structure has been guaranteed, help further improving the precision of test result.

2. This application sets up cutting ring and tooth through the bottom at the barrel to set up the drive structure that can pass the cutting ring at the barrel top, make the cutting ring can be followed and released in the second ring channel of barrel lower extreme, can retrieve the second ring channel when not using, compare in traditional integrative unadjustable cutting ring structure, this equipment can improve the security of carrying when guaranteeing normal use.

3. This application is provided with the gear on the seat that goes up and down, be provided with the ring gear in the outside of barrel, be provided with the connecting block on the gear, through using supporting drive spanner, can drive the gear rotation, further drive ring gear and barrel synchronous revolution, thereby realize reciprocating of barrel, compare in the tradition directly press the sampling tube or the mode of screw in soil, it is more laborsaving when manual operation, the supporting seat side is provided with the bracing piece simultaneously, when boring, the bracing piece can provide stable support, the moving direction who keeps the barrel does not take place the skew.

4. This application has set up a plurality of baffles at the lower extreme of barrel, and a plurality of baffles can stretch out or withdraw first ring channel in can following first ring channel under the drive of drive structure, and the direction slope that the baffle removed simultaneously, a plurality of baffles can merge into the toper structure, so get the backplate and merge and can prevent that soil from breaking away from the sampling tube boring, avoid the oversampling to influence sampling efficiency or the incomplete condition of sample to take place.

Drawings

FIG. 1 shows a schematic view of a folded configuration of the apparatus provided by the present invention;

FIG. 2 is a schematic diagram illustrating an expanded structure of a device according to a first embodiment of the present invention;

FIG. 3 is a schematic diagram illustrating an expanded structure of the apparatus according to the second embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of the lower end of the cylinder provided by the invention;

FIG. 5 shows a schematic view of the upper end explosion structure of the cartridge provided by the present invention;

FIG. 6 is a schematic sectional view of the upper end of the cylinder provided by the invention;

FIG. 7 shows an enlarged schematic view of the structure at A in FIG. 6;

fig. 8 shows a schematic view of the structure of the sampling tube provided by the present invention.

Illustration of the drawings:

1. a supporting seat; 2. a rotating seat; 3. a support bar; 4. a stopper; 5. a foot pad; 6. a barrel; 7. a through hole; 8. a first annular groove; 9. a second annular groove; 10. a baffle plate; 11. a connecting rod; 12. a first slide bar; 13. a first spring; 14. a first annular sheet; 15. a first limit bolt; 16. a first buckle; 17. cutting with a ring cutter; 18. a tooth sheet; 19. a second slide bar; 20. a second spring; 21. a second annular plate; 22. a second limit bolt; 23. a second buckle; 24. a chute; 25. a push rod; 26. a groove; 27. a bearing; 28. a lifting seat; 29. fixing the rod; 30. a sliding sleeve; 31. a sampling tube; 32. a protrusion; 33. layering; 34. fastening a bolt; 35. a gear; 36. a toothed ring; 37. connecting blocks; 38. a card slot; 39. driving the wrench; 40. and a limiting member.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-8, the present invention provides a technical solution:

the first embodiment is as follows:

an in-situ soil non-disturbance sampling device comprises an annular supporting seat 1, a plurality of supporting components are arranged on the outer side of the supporting seat 1, a cylindrical barrel body 6 in threaded connection is arranged on the inner side of the supporting seat 1, the inner diameter of the upper end of the barrel body 6 is larger than that of the lower end of the barrel body, a through hole 7 is formed in the central axis of the barrel body 6, a first annular groove 8 and a second annular groove 9 are formed in the bottom of the barrel body, a detachable sampling tube 31 is arranged inside the through hole 7, the first annular groove 8 is located on the outer side of the second annular groove 9, a plurality of annular uniformly-distributed baffle plates 10 are arranged inside the first annular groove 8, the baffle plates 10 can be combined into a conical structure, a cutting ring 17 is arranged inside the second annular groove 9, a plurality of tooth sheets 18 are arranged at the bottom of the cutting ring 17, a first driving component and a second driving component are arranged at the top of the barrel body 6 and used for driving the baffle plates 10 and the cutting ring 17 to move up and down, the upper end of the cylinder 6 is provided with a limiting component matched with the first driving component and the second driving component; the first driving assembly comprises a plurality of connecting rods 11 which are respectively rotatably connected with the plurality of baffles 10, the upper ends of the plurality of connecting rods 11 are respectively rotatably connected with first sliding rods 12 through torsion springs, the first sliding rods 12 penetrate through the barrel 6 in the axial direction and extend to the upper side of the barrel 6, the top ends of the plurality of first sliding rods 12 are fixedly connected with the same first annular sheet 14, and a plurality of first springs 13 are arranged between the barrel 6 and the first annular sheet 14; the second driving assembly comprises a plurality of second sliding rods 19 fixedly connected with the cutting ring 17, the upper ends of the plurality of second sliding rods 19 penetrate through the barrel 6 along the axial direction of the barrel 6, the top ends of the plurality of second sliding rods 19 are fixedly connected with a same second annular sheet 21, and a plurality of second springs 20 are arranged between the barrel 6 and the second annular sheet 21; the limiting assembly comprises a first limiting bolt 15 and a second limiting bolt 22 which are fixedly connected with the first annular sheet 14 and the second annular sheet 21 respectively, a sliding groove 24 which is arranged along the radial direction is formed in the barrel 6, a push rod 25 which moves along the radial direction of the barrel 6 is arranged in the sliding groove 24, the first limiting bolt 15 and the second limiting bolt 22 can slide from the top of the barrel 6 to penetrate into the sliding groove 24, the lower ends of the first limiting bolt 15 and the second limiting bolt 22 are fixedly connected with a second buckle 23 of a first buckle 16 which can be clamped with the sliding groove 24 respectively, and a groove 26 is formed in the side surface of the push rod 25. The supporting component is provided with at least three to encircle supporting seat 1 evenly distributed, the supporting component include with 1 fixed connection's of supporting seat rotation seat 2, rotate on the seat 2 and be connected with bracing piece 3, the upper end that 6 one side of barrel were kept away from to bracing piece 3 is provided with dog 4, the lower extreme of bracing piece 3 is provided with callus on the sole 5. The top of supporting seat 1 is provided with a plurality of annular evenly distributed's locating part 40, and the upper end of a plurality of locating part 40 is provided with same annular lift seat 28, and the top fixedly connected with L-shaped dead lever 29 of lift seat 28, and the other end fixedly connected with annular sliding sleeve 30 of dead lever 29, through-hole 7 and the coaxial distribution of sliding sleeve 30, lift seat 28 passes through bearing 27 and is connected with barrel 6 rotation. The sampling tube 31 is composed of two semicircular tube pieces having the same shape, the lower end of the tube piece has an opening, and the semicircular edges at the upper and lower ends of the tube piece are provided with protrusions 32. The top of the sliding sleeve 30 is rotatably connected with a pressing bar 33, the pressing bar 33 is arranged along the radial direction of the sliding sleeve 30, and the open end of the pressing bar 33 is fixedly connected with the sliding sleeve 30 through a fastening bolt 34. The inner diameter of the upper end surface of the sampling tube 31 is larger than that of the sliding sleeve 30, and a circular ring structure consisting of two protrusions 32 at the lower ends of the two tube pieces is attached to the inner wall of the through hole 7. The outside of lift seat 28 is rotated and is connected with gear 35, and the top fixedly connected with connecting block 37 of gear 35, and connecting block 37's top has draw-in groove 38, and connecting block 37 drives gear 35 rotatory through the drive spanner 39 with draw-in groove 38 complex, and the outside cover of barrel 6 is equipped with the ring gear 36 with gear 35 meshing. The baffle 10 is in sliding contact with the inner wall of the lower end opening of the first annular groove 8, and the thickness of the baffle 10 is 3-5 mm.

Specifically, as shown in fig. 2, fig. 3, fig. 5 and fig. 8, the outside of the lifting seat 28 is rotatably connected with a gear 35, the top of the gear 35 is fixedly connected with a connecting block 37, the top of the connecting block 37 is provided with a clamping groove 38, the connecting block 37 drives the gear 35 to rotate through a driving wrench 39 matched with the clamping groove 38, and the outside of the cylinder 6 is sleeved with a gear ring 36 meshed with the gear 35. The top of supporting seat 1 is provided with a plurality of annular evenly distributed's locating part 40, and the upper end of a plurality of locating part 40 is provided with same annular lift seat 28, and the top fixedly connected with L-shaped dead lever 29 of lift seat 28, and the other end fixedly connected with annular sliding sleeve 30 of dead lever 29, through-hole 7 and the coaxial distribution of sliding sleeve 30, lift seat 28 passes through bearing 27 and is connected with barrel 6 rotation. The sampling tube 31 is composed of two semicircular tube pieces having the same shape, the lower end of the tube piece has an opening, and the semicircular edges at the upper and lower ends of the tube piece are provided with protrusions 32. The inner diameter of the upper end surface of the sampling tube 31 is larger than that of the sliding sleeve 30, and a circular ring structure consisting of two protrusions 32 at the lower ends of the two tube pieces is attached to the inner wall of the through hole 7. The top of the sliding sleeve 30 is rotatably connected with a pressing bar 33, the pressing bar 33 is arranged along the radial direction of the sliding sleeve 30, and the open end of the pressing bar 33 is fixedly connected with the sliding sleeve 30 through a fastening bolt 34.

The sampling tube 31 passes through the sliding sleeve 30 and enters the through hole 7, the bulge 32 and the bead 33 at the upper end of the sampling tube 31 play a role in limiting, and the bulge 32 at the lower end of the sampling tube 31 can keep the sampling tube 31 from shifting. The mode that adopts two section of jurisdiction combinations makes things convenient for the dismouting, easily takes a sample to make the soil layer can not receive the extrusion, realize the no disturbance of normal position sample.

Specifically, as shown in fig. 4 and 6, the first driving assembly includes a plurality of connecting rods 11 rotatably connected with the plurality of baffles 10, the upper ends of the plurality of connecting rods 11 are rotatably connected with first sliding rods 12 through torsion springs, the first sliding rods 12 penetrate and extend to the upper side of the cylinder 6 along the axial direction of the cylinder 6, the top ends of the plurality of first sliding rods 12 are fixedly connected with a same first annular piece 14, and a plurality of first springs 13 are arranged between the cylinder 6 and the first annular piece 14. The baffle 10 is in sliding contact with the inner wall of the lower end opening of the first annular groove 8, and the thickness of the baffle 10 is 3-5 mm.

The lower extreme of first ring channel 8 is the slope, when first slide bar 12 moves down, promotes the lower extreme of connecting rod 11 and pastes the inner wall of first ring channel 8 and remove, further releases first ring channel 8 with baffle 10, and after connecting rod 11 rotated, the torsional spring took place to twist reverse, under torsional spring and the open-ended dual function of 8 lower extremes of first ring channel, made baffle 10 can closely laminate the inner wall of first ring channel 8, improved the stability of removing.

Specifically, as shown in fig. 4 and 6, the second driving assembly includes a plurality of second slide rods 19 fixedly connected to the cutting ring 17, upper ends of the plurality of second slide rods 19 all penetrate above the cylinder 6 along an axial direction of the cylinder 6, top ends of the plurality of second slide rods 19 are fixedly connected to a same second annular plate 21, and a plurality of second springs 20 are disposed between the cylinder 6 and the second annular plate 21. The limiting assembly comprises a first limiting bolt 15 and a second limiting bolt 22 which are fixedly connected with the first annular sheet 14 and the second annular sheet 21 respectively, a sliding groove 24 which is arranged along the radial direction is formed in the barrel 6, a push rod 25 which moves along the radial direction of the barrel 6 is arranged in the sliding groove 24, the first limiting bolt 15 and the second limiting bolt 22 can slide from the top of the barrel 6 to penetrate into the sliding groove 24, the lower ends of the first limiting bolt 15 and the second limiting bolt 22 are fixedly connected with a second buckle 23 of a first buckle 16 which can be clamped with the sliding groove 24 respectively, and a groove 26 is formed in the side surface of the push rod 25.

When drilling, the second sliding rod 19 can push the cutting ring 17 and the toothed plate 18 out of the second annular groove 9 by pressing the second annular plate 21, the second buckle 23 at the bottom of the second limit bolt 22 is clamped on the inner wall of the sliding groove 24, the stability of the cutting ring 17 is kept in the drilling process, when the cutting ring 17 needs to be retracted, the push rod 25 is pushed into the sliding groove 24, the inner end of the push rod 25 and the inner wall of the groove 26 can push the first buckle 16 and the second buckle 23 to separate from the sliding groove 24, and therefore the first annular plate 14 and the second annular plate 21 are reset under the elastic force action of the first spring 13 and the second spring 20.

Specifically, as shown in fig. 2 and 3, the supporting component is provided with at least three to surround 1 evenly distributed of supporting seat, the supporting component include with 1 fixed connection's of supporting seat rotation seat 2, rotate on the seat 2 and be connected with bracing piece 3, the upper end that 6 one side of barrel were kept away from to bracing piece 3 is provided with dog 4, the lower extreme of bracing piece 3 is provided with callus on the sole 5.

Bracing piece 3 the side of laminating barrel 6 when equipment does not use, simultaneously with the upper end of supporting seat 1 rotation to barrel 6, can save space, portable. Rotate bracing piece 3 when equipment uses and make dog 4 laminating rotate seat 2, dog 4 supports to rotate seat 2 this moment, and bracing piece 3 can't continue to rotate, passes through bracing piece 3 stability that keeps equipment when boring.

Specifically, as shown in fig. 2, the limiting member 40 is a cylindrical rod, the lower end of the rod is fixedly connected to the supporting seat 1, the upper end of the rod penetrates through the lifting seat 28, and the rod is slidably connected to the lifting seat 28. The locating part 40 is the columniform body of rod, because the body of rod formula structure as an organic whole, its holistic structural strength is higher, so can provide more stable support for lift seat 28, reduce rocking of lift seat 28 when equipment uses, improve stability in use.

Example two: the difference from the first embodiment is that:

specifically, as shown in fig. 3, the limiting member 40 is a multi-section telescopic rod, and the upper and lower ends of the multi-section telescopic rod are respectively fixedly connected to the lifting seat 28 and the supporting seat 1. Because the characteristic of telescopic link self, it is stable not to have the body of rod to the supporting effect of lift seat 28, but the length of multisection telescopic link can be adjusted along with the distance flexibility between supporting seat 1 and the lift seat 28, so can save space when storage facilities, make things convenient for equipment to carry.

In summary, in the in-situ soil non-disturbance sampling device provided by this embodiment, when in use, first, the support rod 3 is rotated to the stop block 4 to abut against the rotating seat 2, then the driving wrench 39 drives the gear 35 to rotate, further the barrel 6 is rotated, the support seat 1 is moved to the lower end of the barrel 6, then the second annular sheet 21 is pressed to push the cutting ring 17 out of the second annular groove 9, the device is placed at a sampling position, then the driving wrench 39 drives the barrel 6 to move down to drill into the soil, after the soil is drilled to a proper depth, the first annular sheet 14 is pressed, the plurality of baffles 10 are pushed out of the first annular groove 8 and combined into a conical shape, finally, the device is pulled out upwards to horizontally place the device, the fastening bolt 34 is screwed down, the sampling tube 31 can be taken down by rotating the pressing strip 33, and two segments are separated to obtain the sampled soil.

The previous description of the embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The in-situ soil non-disturbance sampling device is characterized by comprising an annular supporting seat (1), wherein a cylindrical barrel body (6) is screwed in the supporting seat (1), the inner diameter of the upper end of the barrel body (6) is larger than that of the lower end of the barrel body, a through hole (7) is formed in the central axis of the barrel body (6), a first annular groove (8) and a second annular groove (9) are arranged at the bottom of the supporting seat, a sampling pipe (31) is detachably connected in the through hole (7), the first annular groove (8) is located on the outer side of the second annular groove (9), a plurality of annular uniformly-distributed baffle plates (10) are arranged in the first annular groove (8), the baffle plates (10) can be combined into a conical structure, a cutting ring (17) is arranged in the second annular groove (9), and a plurality of tooth sheets (18) are arranged at the bottom of the cutting ring (17), the top of the cylinder body (6) is provided with a first driving assembly and a second driving assembly which are used for driving the baffle (10) and the cutting ring (17) to move up and down, and the upper end of the cylinder body (6) is provided with a limiting assembly matched with the first driving assembly and the second driving assembly;

the first driving assembly comprises a plurality of connecting rods (11) which are respectively rotatably connected with the plurality of baffles (10), the upper ends of the plurality of connecting rods (11) are respectively rotatably connected with a first sliding rod (12) through torsion springs, the first sliding rods (12) penetrate through the barrel body (6) along the axial direction and extend to the upper side of the barrel body (6), the top ends of the plurality of first sliding rods (12) are fixedly connected with a same first annular sheet (14), and a plurality of first springs (13) are arranged between the barrel body (6) and the first annular sheet (14);

the second driving assembly comprises a plurality of second sliding rods (19) fixedly connected with the cutting ring (17), the upper ends of the second sliding rods (19) penetrate through the upper portion of the barrel body (6) along the axial direction of the barrel body (6), the top ends of the second sliding rods (19) are fixedly connected with a same second annular sheet (21), and a plurality of second springs (20) are arranged between the barrel body (6) and the second annular sheet (21).

2. The in-situ soil non-disturbance sampling device according to claim 1, the limiting component comprises a first limiting bolt (15) and a second limiting bolt (22) which are respectively and fixedly connected with a first annular sheet (14) and a second annular sheet (21), the inside of the cylinder body (6) is provided with a sliding chute (24) arranged along the radial direction, the inside of the sliding chute (24) is provided with a push rod (25) moving along the radial direction of the cylinder body (6), the first limit bolt (15) and the second limit bolt (22) can both slide from the top of the cylinder body (6) to penetrate into the sliding groove (24), and the lower ends of the first limiting bolt (15) and the second limiting bolt (22) are respectively and fixedly connected with a second buckle (23) of a first buckle (16) which can be clamped with the sliding groove (24), and the side surface of the push rod (25) is provided with a groove (26).

3. The in-situ soil undisturbed sampling device according to claim 1, wherein the supporting seat (1) is provided with at least three supporting components at the outer side, the supporting components are uniformly distributed around the supporting seat (1), the supporting components comprise a rotating seat (2) fixedly connected with the supporting seat (1), a supporting rod (3) is rotatably connected to the rotating seat (2), a stop block (4) is arranged at the upper end of one side of the supporting rod (3) far away from the cylinder (6), and a foot pad (5) is arranged at the lower end of the supporting rod (3).

4. The in-situ soil undisturbed sampling device according to claim 1, wherein a plurality of annular locating parts (40) are uniformly distributed at the top of the supporting base (1), the upper ends of the plurality of locating parts (40) are provided with the same annular lifting base (28), the top of the lifting base (28) is fixedly connected with an L-shaped fixing rod (29), the other end of the fixing rod (29) is fixedly connected with an annular sliding sleeve (30), the through holes (7) and the sliding sleeve (30) are coaxially distributed, and the lifting base (28) is rotatably connected with the barrel body (6) through a bearing (27).

5. The in-situ soil undisturbed sampling device of claim 4 wherein the sampling tube (31) is composed of two semicircular segments of the same shape, the lower end of the segment is provided with an opening, and the semicircular edges of the upper and lower ends of the segment are provided with protrusions (32), the top of the sliding sleeve (30) is rotatably connected with a pressing strip (33), the pressing strip (33) is arranged along the radial direction of the sliding sleeve (30), the open end of the pressing strip (33) is fixedly connected with the sliding sleeve (30) through a fastening bolt (34), the outer diameter of the upper end surface of the sampling tube (31) is larger than the inner diameter of the sliding sleeve (30), and the two circular ring structures formed by the protrusions (32) at the lower end of the segment are attached to the inner wall of the through hole (7).

6. The in-situ soil non-disturbance sampling device according to claim 4, wherein a gear (35) is rotatably connected to the outer side of the lifting seat (28), a connecting block (37) is fixedly connected to the top of the gear (35), a clamping groove (38) is formed in the top of the connecting block (37), the connecting block (37) drives the gear (35) to rotate through a driving wrench (39) matched with the clamping groove (38), and a gear ring (36) meshed with the gear (35) is sleeved on the outer side of the cylinder (6).

7. The in-situ soil non-disturbance sampling device according to claim 1, wherein the baffle (10) is in sliding contact with the inner wall of the lower opening of the first annular groove (8), and the thickness of the baffle (10) is 3-5 mm.

8. The in-situ soil undisturbed sampling device of claim 4 wherein the retainer (40) is a cylindrical rod, the lower end of the rod is fixedly connected to the support base (1), the upper end of the rod extends through the lifting base (28), and the rod is slidably connected to the lifting base (28).

9. The in-situ soil undisturbed sampling device of claim 4 wherein the position limiter (40) is a plurality of telescopic rods, and the upper and lower ends of the telescopic rods are fixedly connected with the lifting seat (28) and the supporting seat (1) respectively.