A soil intelligent and efficient stratified sampling device

Abstract

The present invention discloses a soil intelligent and efficient stratified sampling device in the field of exploration sampling technology, comprising a sampling tube and a base; a driving assembly is provided on the top of the sampling tube; a functional tube is sleeved on the outer side of the sampling tube, and the functional tube is rotatably connected to the sampling tube; a plurality of arc plates are circumferentially arranged on the functional tube, and an elastic region is formed between the arc plates and the functional tube, and telescopic assemblies are arranged in the elastic region; a plurality of sealed cavities are arranged in the functional tube, and a plurality of windows are arranged on the sealed cavities, and elastic cushion layers are arranged on the windows; extrusion assemblies are arranged on both sides of the sealed cavity, and the extrusion assemblies are used to control the change of air pressure in the sealed cavity based on the telescopic amount of the telescopic assembly. If the telescopic amount of the telescopic assembly is not uniform, the air pressure in the sealed cavity is controlled to change, so that the elastic cushion layer is deformed; a through groove is arranged on the base, and a limit position assembly is arranged in the through groove. This scheme can monitor and adjust the posture of the sampling tube in real time during the sampling process, thereby avoiding the tilting of the sampling tube.

Description

Technical Field

[0001] The invention belongs to the technical field of exploration sampling, and in particular is a soil intelligent and efficient stratified sampling device. Background Art

[0002] In soil science research and environmental management, soil sampling is the basic work for obtaining soil information, assessing soil quality and pollution status. According to the requirements of GB / T 36197-2018 "Technical Guide for Soil Sampling", soil sampling should follow a series of scientific principles to ensure the accuracy and representativeness of the sampling results. Among them, vertical stratified sampling is a key link in soil sampling, which is directly related to the accurate description of the characteristics of different layers on the vertical profile of the soil. Soil has spatial heterogeneity, that is, the soil properties at different locations and depths may be different. If the sampling is not kept vertical, the soil samples obtained may be unevenly distributed in the vertical direction, which cannot accurately reflect the actual situation of the target soil layer, thereby reducing the representativeness of the sample.

[0003] Most existing soil sampling devices rely on manual operation, such as using traditional manual samplers or simple mechanical sampling devices. During the sampling process, due to the unevenness of soil texture, differences in ground hardness, and the limitations of the operator's technical level, the sampling tube is prone to tilt when inserted into the soil. This tilt not only affects the consistency of the sampling depth, but also causes the obtained soil samples to be unevenly distributed in the vertical direction, which in turn affects the representativeness of the sample and the accuracy of the analysis results.

[0004] Therefore, there is an urgent need for an intelligent and efficient soil stratified sampling device that can avoid the deviation of the direction and angle of the sampling tube during the sampling process. Summary of the invention

[0005] In order to solve the above problems, the purpose of the present invention is to provide a soil intelligent and efficient stratified sampling device, which can effectively solve the problem of easy tilting during soil sampling.

[0006] In order to achieve the above object, the technical solution of the present invention is as follows:

[0007] A soil intelligent and efficient stratified sampling device comprises a sampling tube and a base; a driving assembly is detachably connected to the top of the sampling tube, and the driving assembly is used to drive the sampling tube to rotate; a drill bit is arranged at the bottom of the sampling tube; a functional tube is sleeved on the outer side of the sampling tube, and the functional tube is rotatably connected to the sampling tube; a plurality of arc plates are circumferentially arranged on the functional tube, and the arc plates are arranged equidistantly, one end of the bottom of the arc plate is fixedly connected to the bottom of the functional tube, and an elastic area is formed between one end of the top of the arc plate and the functional tube, and telescopic assemblies are arranged in the elastic area; a plurality of sealed cavities are arranged in the functional tube, and the sealed cavities are located between adjacent arc plates, and a plurality of windows are arranged on the side of the sealed cavity away from the sampling tube, and elastic cushion layers are arranged on the windows; extrusion assemblies are arranged on both sides of the sealed cavity, and the extrusion assemblies are used to control the change of air pressure in the sealed cavity based on the expansion and contraction amount of the telescopic assembly. If the expansion and contraction amount of the telescopic assembly is not uniform, the air pressure in the sealed cavity is controlled to change, so that the elastic cushion layer is deformed;

[0008] A through groove is arranged on the base, and the through groove is slidably matched with the functional tube; a plurality of oblique grooves are arranged circumferentially in the through groove; a first spring and a connecting rod are arranged in the oblique groove, and the first spring is located in the oblique groove away from one end of the through groove, and the connecting rod is slidably matched with the oblique groove; a ball joint is arranged at one end of the connecting rod, and the ball joint is located between adjacent arc plates and is slidably matched with the functional tube.

[0009] The above scheme has the following beneficial effects:

[0010] 1. In this solution, the base is placed in the sampling soil area, the through slot is aligned with the area to be sampled, the base is leveled, and the sampling tube is rotated by the driving assembly and pressed downward to make the sampling tube and the functional tube drill vertically downward along the through slot. During this process, the sampling tube and the drill bit keep rotating, while the functional tube does not rotate (it only carries the sampling tube up and down). During the drilling process of the sampling tube and the drill bit, the surrounding soil will squeeze the arc plate on the functional tube. If the sampling tube remains vertical, the squeezing pressure of the surrounding soil on the arc plate is the same, and the squeezing component will not change the air pressure change in the sealed chamber. If the squeezing pressure of the surrounding soil on the arc plate changes during the sampling process, that is, the squeezing pressure on the arc plate is not uniform, the expansion and contraction amounts of the telescopic components in one or more of the arc plates will be significantly different, and the squeezing component will change the air pressure change in the sealed chamber, thereby causing the elastic cushion layer at the window to deform (recessed into the window or protruding from the window). At this time, when the ball joint passes through the window, the resistance to the ball joint will be greatly increased, thereby limiting the further movement of the functional tube until the staff readjusts the verticality, the air pressure in the sealed chamber returns to normal, the elastic cushion layer recovers its elastic deformation, and the resistance between the ball joint and the elastic cushion layer returns to normal, allowing the functional tube to pass normally.

[0011] The verticality of the sampling tube is crucial to the accuracy of stratified sampling and the representativeness of the sample. Compared with the prior art, it is often difficult for traditional sampling devices to adjust their posture in real time during the sampling process, which easily leads to uneven distribution of the obtained soil samples and affects the accuracy of subsequent analysis results. The present invention ensures the verticality of the sampling process and the uniformity of the sample by real-time monitoring and adjustment of the sampling tube posture, greatly improving the representativeness of the sample.

[0012] 2. This solution reduces the need for repeated sampling due to tilting by automatically monitoring and adjusting the sampling tube posture, thereby improving the overall sampling efficiency.

[0013] Furthermore, the driving assembly includes a first carrier, a driving member and a connecting tube; the output shaft of the driving member passes through the first carrier, the top of the connecting tube is fixedly connected to the output shaft of the driving member; the bottom of the connecting tube is detachably connected to the sampling tube.

[0014] Beneficial effects: The first carrier, the driving member and the connecting pipe in the driving assembly form a highly modular structure. This design allows the sampling tube to be easily and detachably connected to the connecting pipe, which not only facilitates assembly and disassembly during the sampling process, but also greatly improves the flexibility of the sampling operation. When the sampling tube needs to be replaced or maintained, the staff can complete it quickly without complicated operating steps, thereby improving work efficiency.

[0015] Furthermore, handles are provided on both sides of the first carrier.

[0016] Beneficial effects: The handle design allows the staff to easily hold and operate the entire drive assembly. Whether it is transporting, installing or adjusting the position of the sampling device, the handle can be used to achieve fast and stable operation. This convenience not only improves work efficiency, but also reduces the labor intensity of the staff.

[0017] Furthermore, the telescopic assembly includes a sleeve; the top of the sleeve is fixedly connected to the inner side of the arc plate; an active cavity is provided in the sleeve, a second spring is provided at the top of the active cavity, a cylinder is provided at the bottom of the second spring, the bottom of the cylinder extends outside the sleeve, the bottom of the cylinder is embedded in the side wall of the functional tube, and the cylinder and the functional tube are rotatably matched; a curved profile is also provided on the inner wall of the sleeve, and a protrusion is also provided on the outer side of the cylinder, and the protrusion is slidably matched with the curved profile.

[0018] Beneficial effect: When the sampling tube tilts during the sampling process, the soil extrusion force on the arc plates in different directions will change, causing them to deflect inward by different distances. Through this conversion mechanism in the telescopic assembly, the changes in these offsets can be monitored in real time and fed back through the rotation angle of the cylinder. This dynamic monitoring and real-time feedback capability enables staff to adjust the posture of the sampling tube in a timely manner to ensure the smooth progress of the sampling process.

[0019] Furthermore, the extrusion assembly includes a plurality of arc-shaped grooves; incomplete gear rings are arranged in the arc-shaped grooves, and sliders are arranged at both ends of the incomplete gear rings, the sliders are slidably matched with the arc-shaped grooves, and the arc-shaped grooves are connected with adjacent sealing cavities; a gear is also arranged at the bottom of the cylinder, and the gear is meshed with the incomplete gear rings.

[0020] Beneficial effect: The rotation of the cylinder drives the gear to rotate, and the rotation of the gear drives the incomplete gear ring to rotate. The incomplete gear ring slides in the arc groove and then pushes the slider to move. The slider will change the volume of the sealed chamber during the movement. When the rotation angle of the cylinder is the same, the moving distance of the incomplete gear ring in the arc groove is the same, that is, the amount of space squeezed by the sliders on both sides of a sealed chamber is the same as the space expanded by the sliders on the other layer, thereby maintaining the air pressure balance in the sealed chamber.

[0021] When the cylinder rotates at different angles, the moving distances of the sliders on both sides of the sealed cavity will not match, that is, the distances of the two sliders squeezing and expanding are different, which will cause the air pressure in the sealed cavity to increase or decrease, thereby causing the deformation of the elastic cushion layer. In this way, the drilling progress of the sampling tube can be adjusted by using the consistency of the squeezing force of the soil on the arc plate.

[0022] Furthermore, a smooth cushion layer is provided between the arc-shaped plate and the functional tube, and the smooth cushion layer is used to wrap the elastic area between the arc-shaped plate and the functional tube.

[0023] Beneficial effect: The smooth cushion layer acts as a barrier, effectively preventing the surrounding soil from entering the elastic area between the arc plate and the functional tube during the drilling of the sampling tube. Such intrusion may not only affect the free deflection of the arc plate, leading to errors in the judgment of the soil extrusion force, but also hinder the normal operation of the telescopic component, thereby affecting the accuracy and reliability of the entire sampling process.

[0024] Furthermore, a level is arranged on the base.

[0025] Beneficial effect: Through the intuitive display of the level, the operator can quickly adjust the position of the base to keep it level. This method reduces the error of human judgment and adjustment and improves the accuracy and stability of measurement.

[0026] Furthermore, one end of the inclined groove away from the through groove is higher than one end of the inclined groove close to the through groove.

[0027] Beneficial effect: By setting the inclined groove away from one end of the through groove and higher than the other end, the ball joint and the connecting rod can be facilitated to slide out of the inclined groove by relying on their own gravity, and when it is necessary to limit the downward movement of the functional tube, such a setting makes the angle between the connecting rod and the functional tube less than 90 degrees, which can increase the resistance of the ball joint and the connecting rod to the functional tube and avoid the situation where the functional tube pushes the ball joint to both sides.

[0028] Further, the thickness of the side wall of the functional tube gradually decreases from the top to the bottom.

[0029] Beneficial effect: By setting the thickness of the side wall of the functional tube to be gradually changed, the supporting effect of the ball joint on the functional tube is enhanced during the downward movement of the functional tube, thereby maintaining the stability of the functional tube.

[0030] Furthermore, sealing rings are provided on the bottom of the cylinder and the side wall of the slider.

[0031] Beneficial effect: By arranging a sealing ring at the bottom of the cylinder, it is possible to prevent external air (air in the elastic area) from flowing between the sealing cavity and the arc groove, thereby affecting the normal deformation of the elastic cushion layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 The three-dimensional structural schematic diagram of an embodiment of an intelligent and efficient soil stratified sampling device of the present invention.

[0033] Figure 2 for Figure 1 Side view of.

[0034] Figure 3 for Figure 2 Cross-section view at AA in the middle.

[0035] Figure 4 for Figure 3 A partial enlarged schematic diagram of point P in the middle.

[0036] Figure 5 for Figure 2 Middle BB cross-section.

[0037] Figure 6 for Figure 5 Schematic diagram of the internal structure of the telescopic component.

[0038] Figure 7 for Figure 3 A partial enlarged schematic diagram of point N in the middle.

[0039] The figure marks in the drawings of the specification include: 1. functional tube; 2. base; 3. first carrier; 4. handle; 5. drive member; 6. connecting tube; 7. gear; 8. level; 9. smooth cushion; 10. sealing ring; 101. sampling tube; 102. drill bit; 103. arc plate; 104. sealing chamber; 105. elastic cushion; 106. window; 107. telescopic assembly; 108. arc groove; 109. incomplete gear ring; 110. slider; 201. inclined groove; 202. through groove; 203. first spring; 204. ball joint; 205. connecting rod; 1071. sleeve; 1072. movable chamber; 1073. second spring; 1074. curved profile; 1075. cylinder; 1076. protrusion. DETAILED DESCRIPTION

[0040] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0041] In the description of the present invention, it is to be understood that the terms “longitudinal”, “lateral”, “vertical”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0042] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0043] The following is further described in detail through specific implementation methods:

[0044] The embodiment is basically as shown in the attached Figure 1-Figure 7 As shown: a soil intelligent and efficient stratified sampling device, including a sampling tube 101 and a base 2; a driving component is detachably connected to the top of the sampling tube 101, and the driving component is used to drive the sampling tube 101 to rotate.

[0045] Specifically, in this embodiment, the driving assembly includes a first carrier 3, a driving member 5 and a connecting tube 6, wherein the driving member 5 is a motor; the output shaft of the driving member 5 passes through the first carrier 3, and the top of the connecting tube 6 is coaxially welded and fixed with the output shaft of the driving member 5; the bottom of the connecting tube 6 is detachably connected to the sampling tube 101, and specifically, the connecting tube 6 is detachably connected to the sampling tube 101 through threads. In order to facilitate the staff to control the device, handles 4 are welded and fixed on both sides of the first carrier 3.

[0046] A drill bit 102 is welded and fixed at the bottom of the sampling tube 101; a functional tube 1 is sleeved on the outside of the sampling tube 101, and the functional tube 1 is rotatably connected to the sampling tube 101, specifically through a bearing; a plurality of arc plates 103 are arranged circumferentially on the functional tube 1. In this embodiment, there are 4 arc plates 103, which are arranged equidistantly between the arc plates 103, and one end of the bottom of the arc plate 103 is welded and fixed to the bottom of the functional tube 1, and an elastic area is formed between the top end of the arc plate 103 and the functional tube 1. In this example, the elastic area is approximately "V" shaped, and telescopic components 107 are arranged in the elastic area; a smooth cushion layer 9 is bonded and fixed between the arc plate 103 and the functional tube 1. In this embodiment, the material of the smooth cushion layer 9 is an elastic metal sheet, and the smooth cushion layer 9 is used to wrap the elastic area between the arc plate 103 and the functional tube 1, so as to prevent impurities such as soil dust from entering the elastic area. Preferably, the side wall thickness of the functional tube 1 in this embodiment gradually decreases from the top to the bottom.

[0047] Specifically, in this embodiment, the telescopic assembly 107 includes a sleeve 1071; the top of the sleeve 1071 is welded and fixed to the inner side of the arc plate 103; an active cavity 1072 is opened in the sleeve 1071, and a second spring 1073 is welded and fixed to the top of the active cavity 1072, and a cylinder 1075 is placed at the bottom of the second spring 1073, and the cylinder 1075 is slidably matched with the active cavity 1072, and the bottom of the cylinder 1075 extends to the outside of the sleeve 1071, and the bottom of the cylinder 1075 is embedded in the side wall of the functional tube 1, and the cylinder 1075 is rotatably matched with the functional tube 1; a curved profile 1074 is also opened on the inner wall of the sleeve 1071, and a protrusion 1076 is welded and fixed on the outer side of the cylinder 1075, and the protrusion 1076 is slidably matched with the curved profile 1074.

[0048] As attached Figure 5 As shown, a plurality of sealed cavities 104 are provided in the circumferential direction of the functional tube 1. The sealed cavities 104 are located between adjacent arc-shaped plates 103, i.e., in the lower part of the equally spaced region of the adjacent arc-shaped plates 103. A plurality of windows 106 are provided on the side of the sealed cavity 104 away from the sampling tube 101. The windows 106 are provided along the length direction of the functional tube 1, and elastic cushion layers 105 are embedded on the windows 106. Extrusion components are provided on both sides of the sealed cavity 104. The extrusion components are used to control the change of the air pressure in the sealed cavity 104 based on the expansion and contraction amount of the expansion and contraction component 107. If the expansion and contraction amount of the expansion and contraction component 107 is not uniform, the air pressure in the sealed cavity 104 is controlled to change, so that the elastic cushion layer 105 is deformed.

[0049] Specifically, in this embodiment, the extrusion assembly includes a plurality of arc grooves 108, and there are 4 arc grooves 108 in total. In this embodiment, the cross section of the arc groove 108 is circular; an incomplete gear ring 109 is provided in each arc groove 108, and a slider 110 is welded and fixed at both ends of the incomplete gear ring 109. In this embodiment, the slider 110 has a tubular structure, and the slider 110 and the arc groove 108 are slidably matched, and the arc groove 108 is connected to the adjacent sealed cavity 104; the bottom of the cylinder 1075 is also coaxially welded and fixed with a gear 7, and the gear 7 is meshed with the incomplete gear ring 109. In order to prevent other gases from affecting the pressure change in the sealed cavity 104, a sealing ring 10 is provided at the bottom of the cylinder 1075 and the side wall of the slider 110.

[0050] A through slot 202 is provided on the base 2, and the through slot 202 is slidably matched with the functional tube 1; a plurality of inclined slots 201 are provided in the circumferential direction of the through slot 202; in this embodiment, the end of the inclined slot 201 away from the through slot 202 is higher than the end of the inclined slot 201 close to the through slot 202. A first spring 203 and a connecting rod 205 are provided in the inclined slot 201, and the first spring 203 is located in the inclined slot 201 away from the end of the through slot 202, and the connecting rod 205 is slidably matched with the inclined slot 201; a ball joint 204 is welded and fixed at one end of the connecting rod 205, and in this embodiment, the ball joint 204 is a metal spherical object, and the ball joint 204 is slidably matched with the functional tube 1 between the adjacent arc plates 103, that is, the ball joint 204 is in contact with the strip area of ​​the functional tube 1 with the window 106. At the same time, the smooth cushion layer 9 can also reduce the friction force on both sides of the ball joint 204 when the ball joint 204 and the functional pipe 1 slide relative to each other.

[0051] In order to facilitate accurate leveling by the staff, a level gauge 8 is welded and fixed on the base 2 .

[0052] The specific implementation process is as follows:

[0053] Initially, the base 2 is placed in the sampling area, and then the level meter 8 is used to determine whether the base 2 is horizontal. After the base 2 is leveled, the connecting pipe 6 is threadedly connected to the sampling tube 101, and the sampling tube 101 and the functional tube 1 are inserted into the through groove 202. The driving member 5 is started to drive the sampling tube 101 to rotate, and then the first carrier 3 is pressed downward by the handle 4 to make the sampling tube 101 drill downward into the soil. During the movement of the sampling tube 101, the ball joint 204 and the functional tube 1 (specifically between adjacent arc plates 103) slide relative to each other. When the sampling tube 101 deviates, the first spring 203 pushes the connecting rod 205 outward, and the ball joint 204 will resist the further movement of the functional tube 1 when passing through the window 106. The staff judges that the sampling tube 101 is deviated by the sense of pause at this time, and then readjusts the angle of the sampling tube 101 until the sense of pause disappears, indicating that the sampling tube 101 has resumed the vertical sampling state.

[0054] The principle of the sudden feeling is as follows: for example, for ease of understanding, the four arc plates 103 in this embodiment are named A, B, C, and D respectively. Assuming that when the sampling tube 101 is vertical, the soil pressure it is subjected to is 8N. At this time, the offset amounts of each arc plate 103 are consistent, and the expansion and contraction amounts generated by the telescopic component 107 are consistent. At this time, the movement process in the telescopic component 107 is as follows: A pushes the sleeve 1071 to move, and the sleeve 1071 moves inward to make the protrusion 1076 move along the curved profile 1074, thereby driving the cylinder 1075 to rotate. Since the expansion and contraction amounts are consistent, the rotation angles of the cylinder 1075 are the same, and the cylinder 1075 drives the gear 7 to rotate, and the gear 7 drives the incomplete gear ring 109 to move, and the incomplete gear ring 109 drives the sliders 110 on both sides to move.

[0055] For example, the sealed cavity 104 corresponding to A is a, and the same below. At this time, the slider 110 on the left side of a moves X distance inside a, and the slider 110 on the right side of a moves X distance outside a, thereby ensuring that the volume of a remains unchanged. At this time, the air pressure in each sealed cavity 104 is normal air pressure (that is, initially, the elastic cushion layer 105 maintains the air pressure in the normal state (flat)), so there is no change in the resistance between the ball joint 204 and the functional tube 1.

[0056] For another example, assuming that the soil pressures on A, B, C, and D are 10N, 8N, 8N, and 6N, respectively, the sampling tube 101 has deviated because the soil pressures (or the squeezing force of the through groove 202 on the sampling tube 101, similarly) are inconsistent. At this time, the slider 110 on the left side of a will move m distance inwards of a, and the slider 110 on the right side of a will move n distance outwards of a, m>n, and the air pressure in a will increase, thereby causing the elastic cushion layer 105 (the elastic cushion layer 105 corresponding to a) to undergo elastic deformation (bulge), or in other sealed cavity 104d, the slider 110 on the left side of d will move n distance inwards of d, and the slider 110 on the right side of d will move m distance outwards of d, m>n, and the air pressure in d will decrease, thereby causing the elastic cushion layer 105 (the elastic cushion layer 105 corresponding to d) to sink into the window 106.

[0057] At this time, no matter it is bulging or concave, when the ball joint 204 passes through the elastic cushion layer 105 that undergoes elastic deformation, the resistance between the functional tube 1 and the ball joint 204 will be greatly increased, thereby producing a sense of pause and hindering the further downward movement of the sampling tube 101. Until the sampling tube 101 returns to a vertical state, the resistance between the functional tube 1 and the ball joint 204 will return to its initial value.

[0058] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and / or characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A soil intelligent and efficient stratified sampling device, characterized in that: The invention comprises a sampling tube (101) and a base (2); a driving assembly is detachably connected to the top of the sampling tube (101), and the driving assembly is used to drive the sampling tube (101) to rotate; a drill bit (102) is arranged at the bottom of the sampling tube (101); a functional tube (1) is sleeved on the outside of the sampling tube (101), and the functional tube (1) is rotatably connected to the sampling tube (101); a plurality of arc plates (103) are circumferentially arranged on the functional tube (1), and the arc plates (103) are arranged equidistantly, one end of the bottom of the arc plate (103) is fixedly connected to the bottom of the functional tube (1), and an elastic region is formed between the top end of the arc plate (103) and the functional tube (1), and the elastic region is provided with A telescopic component (107) is provided in the functional tube (1); a plurality of sealed cavities (104) are provided in the functional tube (1), the sealed cavities (104) are located between adjacent arc-shaped plates (103), a plurality of windows (106) are provided on the side of the sealed cavity (104) away from the sampling tube (101), and elastic cushion layers (105) are provided on the windows (106); extrusion components are provided on both sides of the sealed cavity (104), and the extrusion components are used to control the change of air pressure in the sealed cavity (104) based on the expansion and contraction amount of the telescopic component (107); if the expansion and contraction amount of the telescopic component (107) is not uniform, the air pressure in the sealed cavity (104) is controlled to change, so that the elastic cushion layer (105) is deformed; A through groove (202) is provided on the base (2), and the through groove (202) is slidably matched with the functional tube (1); a plurality of inclined grooves (201) are circumferentially provided inside the through groove (202); a first spring (203) and a connecting rod (205) are provided inside the inclined groove (201), and the first spring (203) is located at one end of the inclined groove (201) away from the through groove (202), and the connecting rod (205) is slidably matched with the inclined groove (201); a ball joint (204) is provided at one end of the connecting rod (205), and the ball joint (204) is slidably matched with the functional tube (1) between adjacent arc-shaped plates (103); The telescopic assembly (107) comprises a sleeve (1071); the top of the sleeve (1071) is fixedly connected to the inner side of the arc-shaped plate (103); an active cavity (1072) is arranged in the sleeve (1071); a second spring (1073) is arranged at the top of the active cavity (1072); a cylinder (1075) is arranged at the bottom of the second spring (1073); the bottom of the cylinder (1075) extends to the outside of the sleeve (1071); the bottom of the cylinder (1075) is embedded in the side wall of the functional tube (1); the cylinder (1075) and the functional tube (1) are rotatably matched; a curved profile (1074) is also arranged on the inner wall of the sleeve (1071); a protrusion (1076) is also arranged on the outer side of the cylinder (1075); the protrusion (1076) and the curved profile (1074) are slidably matched; The extrusion assembly includes a plurality of arc-shaped grooves (108); an incomplete gear ring (109) is arranged in each of the arc-shaped grooves (108); sliders (110) are arranged at both ends of the incomplete gear ring (109); the sliders (110) are slidably matched with the arc-shaped groove (108); the arc-shaped groove (108) is connected with an adjacent sealing cavity (104); a gear (7) is also arranged at the bottom of the cylinder (1075); the gear (7) is meshed with the incomplete gear ring (109).

2. The intelligent and efficient soil stratified sampling device according to claim 1 is characterized in that: The driving assembly comprises a first carrier (3), a driving member (5) and a connecting tube (6); the output shaft of the driving member (5) passes through the first carrier (3), the top of the connecting tube (6) is fixedly connected to the output shaft of the driving member (5); and the bottom of the connecting tube (6) is detachably connected to the sampling tube (101).

3. The intelligent and efficient soil stratified sampling device according to claim 2 is characterized in that: Handles (4) are provided on both sides of the first carrier (3).

4. The intelligent and efficient soil stratified sampling device according to claim 3 is characterized in that: A smooth cushion layer (9) is provided between the arc-shaped plate (103) and the functional tube (1), and the smooth cushion layer (9) is used to wrap the elastic region between the arc-shaped plate (103) and the functional tube (1).

5. The intelligent and efficient soil stratified sampling device according to claim 4 is characterized in that: A level (8) is arranged on the base (2).

6. The intelligent and efficient soil stratified sampling device according to claim 5 is characterized in that: An end of the inclined groove (201) away from the through groove (202) is higher than an end of the inclined groove (201) close to the through groove (202).

7. The intelligent and efficient soil stratified sampling device according to claim 6 is characterized in that: The thickness of the side wall of the functional tube (1) gradually decreases from the top to the bottom.

8. The intelligent and efficient soil stratified sampling device according to claim 7 is characterized in that: Sealing rings (10) are provided on the bottom of the cylinder (1075) and the side wall of the slider (110).

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