A soil sampling device for environmental protection engineering detection

Abstract

The invention discloses a soil sampling device for environmental engineering detection in the technical field of samplers, comprising a mounting frame, a lower fixing frame is fixedly mounted on the upper surface of the mounting frame, a fixing ring is fixedly mounted on the lower fixing frame, a plurality of groups of internal threaded parts are rotatably mounted on the fixing ring, sampling rods are all threadedly connected to the internal threaded parts, a connecting plate is fixedly mounted on the upper end of the sampling rod, an upper fixing frame is fixedly mounted on the upper end of the lower fixing frame, a scanning piece is fixedly mounted on the upper fixing frame, a picture collecting piece is arranged at the bottom of the scanning piece, an upper threaded piece is rotatably mounted on the upper end of the scanning piece, a movable threaded rod is internally threadedly connected to the upper threaded piece, the movable threaded rod is slidably connected to the scanning piece, a movable plate is rotatably mounted on the lower end of the movable threaded rod, a plurality of limiting grooves are arranged on the movable plate, a rotating ball is rotatably mounted in the limiting groove, a crushing rod is fixedly mounted on the rotating ball, and a sampling device which can automatically restore the surface of the sampled soil after sampling is provided.

Description

Technical Field

[0001] The invention relates to the technical field of samplers, in particular to a soil sampling device for environmental protection engineering detection. Background Art

[0002] Soil monitoring is basically the same as water quality and air monitoring. Appropriate measurement methods are used to measure various physical and chemical properties of the soil, including iron, manganese, total potassium, organic matter, total nitrogen, available phosphorus, total phosphorus, moisture, total arsenic, available boron, fluoride, chloride, mineral oil and total salt.

[0003] When deep soil sampling is performed, a T-shaped sampler is generally used to introduce the sample into the deep soil layer for soil sampling. After sampling, a long deep pit will be left on the soil surface. The sampling pit after sampling is deep and difficult to recover naturally, leaving the ground unsightly. After sampling, manual excavation is required to restore the soil surface, which affects the efficiency of soil sampling. Summary of the invention

[0004] The technical problem of the present invention is to provide a soil sampling device for environmental protection engineering detection, and to provide a sampling device which can automatically restore the surface of the sampled soil after sampling.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a soil sampling device for environmental engineering detection, comprising a mounting frame, a lower fixing frame is fixedly mounted on the upper surface of the mounting frame, a fixing ring is fixedly mounted on the lower fixing frame, a plurality of groups of internal threaded parts are rotatably mounted on the fixing ring, a sampling rod is threadedly connected to the internal threaded parts, a connecting plate is fixedly mounted on the upper end of the sampling rod, an upper fixing frame is fixedly mounted on the upper end of the lower fixing frame, a scanning part is fixedly mounted on the upper fixing frame, a picture acquisition part is arranged at the bottom of the scanning part, an upper threaded part is rotatably mounted on the upper end of the scanning part, a movable threaded rod is internally threadedly connected to the upper threaded part, the movable threaded rod is slidably connected to the scanning part, a movable plate is rotatably mounted on the lower end of the movable threaded rod, a plurality of limiting grooves are arranged on the movable plate, a rotating ball is rotatably mounted in the limiting groove, a crushing rod is fixedly mounted on the rotating ball, a driving assembly is arranged between the movable threaded rod and the fixing ring, and the driving assembly can automatically drive the movable threaded rod to move downward to crush the sampling pit after driving the sampling rod upward;

[0006] The driving assembly includes a driving shaft, which is rotatably mounted on the mounting frame, an upper gear is fixedly mounted on the upper end of the driving shaft, a plurality of groups of lower gears are fixedly mounted on the lower end of the driving shaft, a driven gear is fixedly mounted on the upper threaded member, a connecting plate is fixedly mounted on the upper end of the sampling rod, a side connecting frame is fixedly mounted on the connecting plate, a transmission gear is rotatably mounted on the side connecting frame, the transmission gear is located between the driven gear and the upper gear, and can mesh with the driven gear and the upper gear.

[0007] As a further solution of the present invention, a connecting shaft is rotatably installed in the sampling rod, the lower end of the connecting shaft passes through the sampling rod and extends to the bottom of the sampling rod, a threaded line is provided at the position where the sampling rod is extended from the lower end of the connecting shaft, a connecting tube is threadedly connected to the lower end of the connecting shaft, a sampling piece is fixedly installed at the lower end of the connecting tube, a control piece is fixedly installed at the lower end of the sampling piece, a clamping piece is provided at the upper end of the connecting tube, a clamping groove is fixedly installed on the lower surface of the sampling rod, and the clamping groove matches the clamping piece.

[0008] As a further solution of the present invention, an inner gear ring is rotatably installed in the control member, a side gear is rotatably installed in the control member on a side corresponding to the inner gear ring, the side gear is meshed with the inner gear ring, an extension shaft is fixedly installed on the side gear, one end of the extension shaft extends to the outside of the control member, a limiting seat is arranged in the control member corresponding to the inner gear ring, a plurality of shear plates are rotatably installed on the limiting seat, a connecting member is rotatably installed on one end of the shear plate, and the end of the connecting member away from the shear plate is rotatably connected to the inner gear ring.

[0009] As a further solution of the present invention, a stamping ring is provided at the lower end of the multiple groups of sampling pieces, and a lower gear ring is rotatably installed on the stamping ring. An internal gear is fixedly installed on one end of the extension shaft extending to the stamping ring, and the internal gear is meshed with the lower gear ring. After the shear plate is screwed out, it blocks the bottom of the sampling piece.

[0010] As a further solution of the present invention, an external connecting ring is rotatably installed on the upper surface of the mounting frame, and external gears are fixedly installed on both upper and lower ends of the external connecting ring, and the external gear is meshed with the lower gear. Internal teeth are fixedly installed on the inner side of the external connecting ring, and movable gears are fixedly installed on the internal threaded parts, and the movable gears are meshed with the internal teeth.

[0011] As a further solution of the present invention, a stirring rod is rotatably installed in the middle position of the lower surface of the movable plate, a micro motor is provided at the lower end of the movable threaded rod, the output end of the micro motor is fixedly connected to the movable plate, an upper gear ring is rotatably installed on the upper surface of the connecting plate, a limiting gear is fixedly installed on the upper end of the connecting shaft, and the limiting gear is meshed with the upper gear ring.

[0012] As a further solution of the present invention, a movable seat is fixedly mounted on the lower surface of the mounting frame, a driving motor is fixedly mounted on one side of the mounting frame, and an output end of the driving motor is fixedly connected to the driving shaft.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] When sampling is performed in the present invention, the internal threaded part on the fixed ring is driven to rotate, and the internal threaded part rotates to drive the sampling rod threadedly connected thereto to move downward. There are multiple groups of internal threaded parts on the fixed ring, and each group of internal threaded parts is provided with a sampling rod. The internal threaded part rotates to drive the multiple groups of sampling rods to move downward, and the sampling rods move downward simultaneously for sampling, so that multiple points of sampling can be performed at the same position, so that multiple soil samples at the same point can be quickly obtained after sampling, which is convenient for subsequent soil detection and comparative testing, and improves the accuracy of soil detection data and the efficiency of multi-point soil sampling.

[0015] After the sampling is completed in the present invention, the driving component drives the sampling rod to move upward. When the sampling rod moves to the highest point, the driving component starts to drive the upper threaded part to rotate. The rotation of the upper threaded part interacts with the movable threaded rod, so that the movable threaded rod moves downward, and the movable threaded rod moves downward to drive the movable plate to move downward. The movable plate moves downward and gradually guides the movable plate to the lower end of the scanning part, so that the squeezing effect of the scanning part on the crushing rod disappears, so that the rotating ball rotates under the action of the torsion spring, so that the crushing rod rotates to a horizontal state with the rotating ball, so that the crushing rod rotates between the limit grooves, and then the movable threaded rod continues to move downward and is introduced between the sampling points. The crushing rod is driven to rotate by the rotation of the movable plate, and the sampling pits are crushed and stirred by the rotation of the crushing rod, loosening the soil so that the soil can evenly fill the sampling pit, avoiding the trouble of repairing the sampling pit with a hose, thereby improving the efficiency of soil sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the present invention when viewed from the bottom up;

[0019] Figure 3 For the present invention Figure 2 A partial schematic diagram of the structure at A in the middle;

[0020] Figure 4 It is a structural cross-sectional view of the present invention;

[0021] Figure 5 For the present invention Figure 4 A partial schematic diagram of the structure at B in the middle;

[0022] Figure 6 For the present invention Figure 4 A partial schematic diagram of the structure at C in the middle;

[0023] Figure 7 For the present invention Figure 4 A partial schematic diagram of the structure at D in the middle;

[0024] Figure 8 For the present invention Figure 4 A partial schematic diagram of the structure at E in the middle;

[0025] Fig. 9 It is a schematic diagram of the internal structure of the control component in the present invention.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 1. Mounting frame; 2. Movable seat; 3. Pressing ring; 4. Active shaft; 5. Upper gear; 6. Lower gear; 7. Lower fixing frame; 8. Upper fixing frame; 9. External gear; 10. External connecting ring; 11. Connecting shaft; 12. Sampling rod; 13. Connecting plate; 14. Scanning piece; 15. Driven gear; 16. Movable threaded rod; 17. Upper threaded piece; 18. Side connecting frame; 19. Transmission gear; 20. Connecting pipe; 21. Sampling piece; 22 , control part; 23, limit gear; 24, upper gear ring; 25, moving gear; 26, internal threaded part; 27, image acquisition part; 28, movable plate; 29, crushing rod; 30, rotating ball; 31, limit groove; 32, stirring rod; 33, shear plate; 34, extension shaft; 35, lower gear ring; 36, internal gear; 37, internal teeth; 38, limit seat; 39, side gear; 40, internal gear ring; 41, connecting part; 42, fixing ring. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-Figure 9The present invention provides a technical solution: a soil sampling device for environmental engineering detection, comprising a mounting frame 1, a lower fixing frame 7 is fixedly mounted on the upper surface of the mounting frame 1, a fixing ring 42 is fixedly mounted on the lower fixing frame 7, a plurality of groups of internal threaded parts 26 are rotatably mounted on the fixing ring 42, a sampling rod 12 is threadedly connected to the internal threaded parts 26, a connecting plate 13 is fixedly mounted on the upper end of the sampling rod 12, an upper fixing frame 8 is fixedly mounted on the upper end of the lower fixing frame 7, a scanning part 14 is fixedly mounted on the upper fixing frame 8, a picture acquisition part 27 is arranged at the bottom of the scanning part 14, and the scanning part An upper threaded member 17 is rotatably installed on the upper end of 14, and a movable threaded rod 16 is connected to the inner thread of the upper threaded member 17. The movable threaded rod 16 is slidably connected to the scanning member 14, and a movable plate 28 is rotatably installed on the lower end of the movable threaded rod 16. A plurality of limiting grooves 31 are provided on the movable plate 28, and a rotating ball 30 is rotatably installed in the limiting groove 31. A crushing rod 29 is fixedly installed on the rotating ball 30. A driving assembly is provided between the movable threaded rod 16 and the fixed ring 42. The driving assembly can automatically drive the movable threaded rod 16 to move downward to crush the sampling pit after driving the sampling rod 12 to move upward.

[0030] During operation, when sampling is performed, the internal threaded member 26 on the fixed ring 42 is driven to rotate, and the internal threaded member 26 rotates to drive the sampling rod threadedly connected thereto to move downward. There are multiple groups of internal threaded members 26 on the fixed ring 42, and each group of internal threaded members 26 is provided with a sampling rod. The internal threaded member 26 rotates to drive multiple groups of sampling rods to move downward, and the sampling rods move downward simultaneously for sampling, so that multiple points of sampling can be performed at the same position, so that multiple soil samples at the same point can be quickly obtained after sampling, which is convenient for subsequent soil detection and comparative testing, improves the accuracy of soil detection data, and the efficiency of multi-point soil sampling. After sampling is completed, the driving component drives the sampling rod to move upward. When the sampling rod moves to the highest point (at this time, the transmission gear 19 moves up to between the driven gear 15 and the upper gear 5, so that the transmission gear 19 is meshed with the upper gear 5 and the driven gear 15), the driving component (the driving shaft 4 rotates to drive the upper gear 5 to rotate, and the upper gear 5 rotates to drive the transmission gear 19 meshed therewith to rotate, and the transmission The gear 19 rotates to drive the driven gear 15 to rotate, and the driven gear 15 rotates to drive the upper threaded member 17 to rotate. The upper threaded member 17 rotates and interacts with the movable threaded rod 16, so that the movable threaded rod 16 moves downward, and the movable threaded rod 16 moves downward to drive the movable plate 28 to move downward. The movable plate 28 moves downward and gradually guides the movable plate 28 to the lower end of the scanning member 14, so that the squeezing effect of the scanning member 14 on the crushing rod 29 disappears, so that the rotating ball 30 rotates under the action of the torsion spring, so that the crushing rod 29 rotates to a horizontal state with the rotating ball 30, so that the crushing rod 29 rotates to between the limit grooves 31, and then the movable threaded rod 16 continues to move downward and is introduced between the sampling points. The crushing rod 29 is driven to rotate by the rotation of the movable plate 28. The sampling pits are crushed and stirred by the rotation of the crushing rod 29, and the loose soil allows the soil to evenly fill the sampling pits, avoiding the trouble of repairing the sampling pits with a hose, thereby improving the efficiency of soil sampling.

[0031] After the sampling is completed in the present invention, the driving assembly drives the sampling rod to move upward. When the sampling rod moves to the highest point, the driving assembly starts to drive the upper threaded member 17 to rotate. The rotation of the upper threaded member 17 interacts with the movable threaded rod 16, so that the movable threaded rod 16 moves downward, and the movable threaded rod 16 moves downward to drive the movable plate 28 to move downward. The movable plate 28 moves downward and gradually guides the movable plate 28 to the lower end of the scanning member 14, so that the squeezing effect of the scanning member 14 on the crushing rod 29 disappears, so that the rotating ball 30 rotates under the action of the torsion spring, so that the crushing rod 29 rotates to a horizontal state with the rotating ball 30, so that the crushing rod 29 rotates between the limiting grooves 31, and then the movable threaded rod 16 continues to move downward and is introduced between the sampling points. The crushing rod 29 is driven to rotate by the rotation of the movable plate 28, and the sampling pits are crushed and stirred by the rotation of the crushing rod 29, loosening the soil so that the soil can evenly fill the sampling pit, avoiding the trouble of repairing the sampling pit with a hose, thereby improving the efficiency of soil sampling.

[0032] As a further solution of the present invention, the driving assembly includes a driving shaft 4, which is rotatably mounted on the mounting frame 1, an upper gear 5 is fixedly mounted on the upper end of the driving shaft 4, a plurality of lower gears 6 are fixedly mounted on the lower end of the driving shaft 4, a driven gear 15 is fixedly mounted on the upper threaded member 17, a connecting plate 13 is fixedly mounted on the upper end of the sampling rod 12, a side connecting frame 18 is fixedly mounted on the connecting plate 13, a transmission gear 19 is rotatably mounted on the side connecting frame 18, and the transmission gear 19 is located between the driven gear 15 and the upper gear 5, and can mesh with the driven gear 15 and the upper gear 5.

[0033] During operation, in the sampling process, the driving shaft 4 rotates to drive the lower gear 6 to rotate, the lower gear 6 rotates to drive the outer gear 9 meshing therewith to rotate, the outer gear 9 rotates to drive the outer connecting ring 10 to rotate, the outer connecting ring 10 rotates to drive the inner teeth 37 to rotate, the inner teeth 37 drives the moving gear 25 meshing therewith to rotate, the moving gear 25 rotates to drive the internal threaded part 26 to rotate, the internal threaded part 26 rotates and interacts with the sampling rod 12 to drive the sampling rod 12 to move downward, thereby driving the stamping ring 3 to move downward, the stamping ring 3 moves downward and drives the multiple groups of sampling parts 21 to move downward at the same time, when the stamping ring 3 moves down to the sampling position deep in the soil, the internal threaded part 26 stops rotating, at this time the lower tooth ring 35 in the stamping ring 3 rotates, and the lower tooth ring 35 The rotation drives the internal gear 36 to rotate, the rotation of the internal gear 36 drives the extension shaft 34 to rotate, the rotation of the extension shaft 34 drives the side gear 39 to rotate, the rotation of the side gear 39 drives the internal gear ring 40 to rotate, the rotation of the internal gear ring 40 pulls the shear plate 33 through the connecting piece 41, so that the shear plate 33 shrinks into the control piece 22, and then the internal threaded piece 26 continues to rotate to drive the sampling piece 21 to move downward, so that the sampling piece 21 moves downward and the soil enters the sampling piece 21, and then the lower gear ring 35 rotates in the opposite direction, the shear plate 33 is screwed out of the bottom of the driven sampling piece 21 to cut the soil, and the lower end of the sampling piece 21 is automatically closed to avoid the possibility of the soil in the sampling piece 21 falling during the upward movement of the sampling piece 21.

[0034] As a further solution of the present invention, a connecting shaft 11 is rotatably installed in the sampling rod 12, and the lower end of the connecting shaft 11 passes through the sampling rod 12 and extends to the bottom of the sampling rod 12. A threaded line is provided at the position where the lower end of the connecting shaft 11 extends out of the sampling rod 12. The lower end of the connecting shaft 11 is threadedly connected to a connecting tube 20, and a sampling component 21 is fixedly installed at the lower end of the connecting tube 20. A control component 22 is fixedly installed at the lower end of the sampling component 21. A clamping component is provided at the upper end of the connecting tube 20, and a clamping groove is fixedly installed on the lower surface of the sampling rod 12, and the clamping groove matches the clamping component.

[0035] During operation, when the sampling piece 21 needs to be replaced, multiple groups of sampling pieces 21 can be replaced at the same time. During the replacement process, the connecting tube 20 on the sampling piece 21 is threadedly connected to the lower end of the connecting shaft 11, and the upper gear ring 24 rotates to drive the limiting gear 23 meshing with it to rotate. The limiting gear 23 rotates and the connecting shaft 11 rotates. The connecting shaft 11 rotates and the connecting tube 20 is gradually screwed into the bottom of the connecting shaft 11 until the upper end of the connecting tube 20 is engaged with the lower end of the sampling rod 12.

[0036] As a further solution of the present invention, an inner gear ring 40 is rotatably installed in the control member 22, and a side gear 39 is rotatably installed on one side of the control member 22 corresponding to the inner gear ring 40, and the side gear 39 is meshed with the inner gear ring 40. An extension shaft 34 is fixedly installed on the side gear 39, and one end of the extension shaft 34 extends to the outside of the control member 22. A limiting seat 38 is arranged between the corresponding inner gear rings 40 in the control member 22, and a plurality of shear plates 33 are rotatably installed on the limiting seat 38, and a connecting member 41 is rotatably installed on one end of the shear plate 33, and the end of the connecting member 41 away from the shear plate 33 is rotatably connected to the inner gear ring 40.

[0037] As a further solution of the present invention, a stamping ring 3 is provided at the lower end of the multiple groups of sampling pieces 21, and a lower gear ring 35 is rotatably installed on the stamping ring 3. An extension shaft 34 extends to one end of the stamping ring 3 and an internal gear 36 is fixedly installed. The internal gear 36 is meshed with the lower gear ring 35, and the shear plate 33 is screwed out to block the bottom of the sampling piece 21.

[0038] As a further solution of the present invention, an external connecting ring 10 is rotatably installed on the upper surface of the mounting frame 1, and external gears 9 are fixedly installed on both upper and lower ends of the external connecting ring 10, and the external gear 9 is meshed with the lower gear 6. An internal tooth 37 is fixedly installed on the inner side of the external connecting ring 10, and a movable gear 25 is fixedly installed on the internal threaded part 26, and the movable gear 25 is meshed with the internal tooth 37.

[0039] As a further solution of the present invention, a stirring rod 32 is rotatably installed in the middle position of the lower surface of the movable plate 28, a micro motor is provided at the lower end of the movable threaded rod 16, the output end of the micro motor is fixedly connected to the movable plate 28, an upper gear ring 24 is rotatably installed on the upper surface of the connecting plate 13, a limiting gear 23 is fixedly installed on the upper end of the connecting shaft 11, and the limiting gear 23 is meshed with the upper gear ring 24.

[0040] As a further solution of the present invention, a movable seat 2 is fixedly mounted on the lower surface of the mounting frame 1 , a driving motor is fixedly mounted on one side of the mounting frame 1 , and an output end of the driving motor is fixedly connected to the driving shaft 4 .

Claims

1. A soil sampling device for environmental protection engineering detection, comprising a mounting frame (1), characterized in that: A lower fixing frame (7) is fixedly mounted on the upper surface of the mounting frame (1), a fixing ring (42) is fixedly mounted on the lower fixing frame (7), a plurality of groups of internal threaded members (26) are rotatably mounted on the fixing ring (42), each of the internal threaded members (26) is threadedly connected to a sampling rod (12), a connecting plate (13) is fixedly mounted on the upper end of the sampling rod (12), an upper fixing frame (8) is fixedly mounted on the upper end of the lower fixing frame (7), a scanning member (14) is fixedly mounted on the upper fixing frame (8), a picture acquisition member (27) is arranged at the bottom of the scanning member (14), and an upper threaded member (17) is rotatably mounted on the upper end of the scanning member (14), The upper threaded member (17) is internally threadedly connected to a movable threaded rod (16), the movable threaded rod (16) is slidably connected to the scanning member (14), a movable plate (28) is rotatably mounted on the lower end of the movable threaded rod (16), a plurality of limiting grooves (31) are provided on the movable plate (28), a rotating ball (30) is rotatably mounted in the limiting groove (31), a crushing rod (29) is fixedly mounted on the rotating ball (30), a driving component is provided between the movable threaded rod (16) and the fixed ring (42), and the driving component can automatically drive the movable threaded rod (16) to move downward to crush the sampling pit after driving the sampling rod (12) to move upward; The driving assembly comprises a driving shaft (4), the driving shaft (4) being rotatably mounted on the mounting frame (1), an upper gear (5) being fixedly mounted on the upper end of the driving shaft (4), a plurality of sets of lower gears (6) being fixedly mounted on the lower end of the driving shaft (4), a driven gear (15) being fixedly mounted on the upper threaded member (17), a connecting plate (13) being fixedly mounted on the upper end of the sampling rod (12), a side connecting frame (18) being fixedly mounted on the connecting plate (13), a transmission gear (19) being rotatably mounted on the side connecting frame (18), the transmission gear (19) being located between the driven gear (15) and the upper gear (5), and being capable of meshing with the driven gear (15) and the upper gear (5).

2. A soil sampling device for environmental protection engineering detection according to claim 1, characterized in that: A connecting shaft (11) is rotatably mounted in the sampling rod (12); the lower end of the connecting shaft (11) passes through the sampling rod (12) and extends to the bottom of the sampling rod (12); a threaded line is provided at the position where the lower end of the connecting shaft (11) extends out of the sampling rod (12); a connecting tube (20) is threadedly connected to the lower end of the connecting shaft (11); a sampling member (21) is fixedly mounted on the lower end of the connecting tube (20); a control member (22) is fixedly mounted on the lower end of the sampling member (21); a clamping member is provided at the upper end of the connecting tube (20); a clamping groove is fixedly mounted on the lower surface of the sampling rod (12); the clamping groove matches the clamping member.

3. A soil sampling device for environmental protection engineering detection according to claim 2, characterized in that: An inner gear ring (40) is rotatably mounted in the control member (22); a side gear (39) is rotatably mounted in the control member (22) on a side corresponding to the inner gear ring (40); the side gear (39) is meshed with the inner gear ring (40); an extension shaft (34) is fixedly mounted on the side gear (39); one end of the extension shaft (34) extends outside the control member (22); a limit seat (38) is provided in the control member (22) between the inner gear ring (40); a plurality of shear plates (33) are rotatably mounted on the limit seat (38); a connecting member (41) is rotatably mounted on one end of the shear plate (33); an end of the connecting member (41) away from the shear plate (33) is rotatably connected to the inner gear ring (40).

4. A soil sampling device for environmental protection engineering detection according to claim 3, characterized in that: A punching ring (3) is provided at the lower end of the plurality of groups of sampling pieces (21), a lower gear ring (35) is rotatably mounted on the punching ring (3), an inner gear (36) is fixedly mounted on one end of the extension shaft (34) extending to the punching ring (3), the inner gear (36) meshes with the lower gear ring (35), and the shear plate (33) is swung out to block the bottom of the sampling piece (21).

5. A soil sampling device for environmental protection engineering detection according to claim 4, characterized in that: An outer connecting ring (10) is rotatably mounted on the upper surface of the mounting frame (1), and outer gears (9) are fixedly mounted on both upper and lower ends of the outer connecting ring (10), and the outer gears (9) mesh with the lower gear (6). Internal teeth (37) are fixedly mounted on the inner side of the outer connecting ring (10), and a movable gear (25) is fixedly mounted on the internal threaded member (26), and the movable gear (25) meshes with the internal teeth (37).

6. A soil sampling device for environmental protection engineering detection according to claim 5, characterized in that: A stirring rod (32) is rotatably mounted at the middle position of the lower surface of the movable plate (28); a micro motor is provided at the lower end of the movable threaded rod (16); an output end of the micro motor is fixedly connected to the movable plate (28); an upper gear ring (24) is rotatably mounted on the upper surface of the connecting plate (13); a limit gear (23) is fixedly mounted on the upper end of the connecting shaft (11); the limit gear (23) is meshed with the upper gear ring (24).

7. A soil sampling device for environmental protection engineering detection according to claim 6, characterized in that: A movable seat (2) is fixedly mounted on the lower surface of the mounting frame (1), a drive motor is fixedly mounted on one side of the mounting frame (1), and an output end of the drive motor is fixedly connected to the driving shaft (4).

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