Soil detection sampling device and sampling method for saline-alkali land restoration

Abstract

The present invention relates to the technical field of soil sampling, and in particular to a soil detection sampling device and a sampling method for saline-alkali land restoration, comprising: a base, on which a sampling head is arranged, and the sampling head is formed by two groups of semi-cylinders; a lifting component, connected to the base, on which a connecting plate connected to the sampling head is arranged, and when the lifting component is actuated, the connecting plate can move in a vertical direction of space; a differential structure, connected to the lifting component, and when the connecting plate moves, the differential component can make the connecting plate deflect 180° relative to the base; a folding component, connecting the two groups of semi-cylinders, and the folding component can keep the two groups of semi-cylinders in a folded and closed state; and an abutment plate, connected to the lifting component, and when the connecting plate rises to the highest point of the stroke, the abutment plate can trigger the action of the folding component, so that the two groups of semi-cylinders move away from each other, thereby improving the sampling efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of soil sampling, in particular to a soil detection sampling device and a sampling method for saline-alkali land restoration. Background Art

[0002] Saline-alkali land is land that contains a lot of salt, which is not conducive to plant growth. In order to improve saline-alkali land and make it suitable for plant production, soil remediation is needed. The components and contents of the remediation agent required for different degrees of saline-alkali land are also different. Therefore, the amount of remediation agent to be used needs to be determined before remediation. In this process, soil samples of saline-alkali land need to be tested.

[0003] In the process of soil sampling, a special soil sampling device is generally required. For example, China has authorized a patent: A high-efficiency soil sampling device (authorization announcement number: CN211904686U), which discloses structures such as a base, a bracket, a transmission mechanism and a collection mechanism, so that the threaded tube can be drilled into the soil for sampling, and the soil in the threaded tube can be pushed out by the cylinder, which saves manpower and sampling time. The storage box is driven to move by the transmission mechanism to sample soil at different depths separately, thereby improving the sampling efficiency.

[0004] However, the above application also has certain disadvantages in actual use, mainly in that: after soil sampling, it will adhere to the threaded tube in a cylindrical shape, so that in order to separate the soil from the threaded tube, manual intervention is required, which makes the device not sufficiently automated and still affects the sampling efficiency to a certain extent. Summary of the invention

[0005] The object of the present invention is to provide a soil detection sampling device and a sampling method for saline-alkali land remediation to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A soil detection and sampling device for saline-alkali land restoration, comprising:

[0008] A base, wherein a sampling head is arranged on the base, and the sampling head is formed by two groups of semi-cylinders;

[0009] A lifting assembly connected to the base, the lifting assembly is provided with a connecting plate connected to the sampling head, and when the lifting assembly is in motion, the connecting plate can move in a vertical direction in space;

[0010] A differential structure connected to the lifting assembly, wherein the differential assembly can deflect the connecting plate 180° relative to the base when the connecting plate moves;

[0011] A folding assembly, connecting the two groups of semi-cylinders, wherein the folding assembly can keep the two groups of semi-cylinders in a folded and closed state;

[0012] The abutment plate is connected to the lifting assembly. When the connecting plate rises to the highest point of the stroke, the abutment plate can trigger the action of the folding assembly to make the two groups of semi-cylinders move away from each other.

[0013] As a further solution of the present invention: the bottom of the semi-cylinder is formed with an inclined arc surface, and the circumferential outer wall of the semi-cylinder is provided with a protrusion, and the protrusions on the two groups of semi-cylinders can form a spiral protrusion when the two groups of semi-cylinders are folded and closed.

[0014] As a further solution of the present invention: the differential structure includes a guide vertical shaft fixedly installed on the base, a lifting sleeve shaft connected to the connecting plate is slidably sleeved on the guide vertical shaft, a convex shaft is provided on the inner wall of the lifting sleeve shaft, and the convex shaft can slide in a guide groove formed on the guide vertical shaft.

[0015] As a further solution of the present invention: the guide groove comprises a spiral groove which is 180° spirally arranged along the axial direction of the guide vertical shaft, and the ends of the spiral groove are connected to a first vertical groove and a second vertical groove.

[0016] As a further solution of the present invention: the lifting assembly includes a driving device fixedly installed on the base, the output shaft of the driving device is connected to a screw rod rotatably installed on the base, the screw rod is provided with a threaded sleeve threadedly connected thereto, the threaded sleeve is connected to a ring, and the ring is slidably connected to an annular groove arranged along the circumference of the lifting sleeve shaft.

[0017] As a further solution of the present invention: the folding assembly includes a connecting shaft rotatably mounted on the connecting plate, a rotating frame is fixed to one end of the connecting shaft away from the connecting plate, two slide grooves are symmetrically arranged on the rotating frame, a slider is slidably mounted in the slide groove, one side of the slider is connected to the semi-cylinder through a connecting rod, and a first pulley is arranged on the other side;

[0018] The folding assembly also includes an energy storage structure arranged on the connecting plate and connected to the No. 1 pulley, the energy storage structure is adapted to the abutment plate, and a side plate is connected to the energy storage structure, a No. 1 inclined groove is formed on the side plate, and the No. 1 pulley can roll in the No. 1 inclined groove.

[0019] As a further solution of the present invention: the energy storage structure includes a trigger shaft slidably arranged through the connecting plate, a limit ring is formed on the trigger shaft, and a cylindrical spring is also sleeved on the trigger shaft, one end of the cylindrical spring is connected to the connecting plate, and the other end is connected to the limit ring;

[0020] The trigger shaft is connected to the side plate via an annular connecting sleeve.

[0021] As a further solution of the present invention: the annular connection kit includes an annular member fixedly connected to the side plate, an annular cavity is formed in the annular member, a sliding connection part is slidably installed in the annular cavity, and the sliding connection part is fixedly connected to the trigger shaft.

[0022] As a further solution of the present invention: the connecting shaft is connected to the guide vertical shaft through a transmission structure;

[0023] The transmission structure includes a bevel gear set arranged on the connecting plate, the bevel gear set is connected to the connecting shaft through a belt, and a gear is connected to the bevel gear set, and a rack plate arranged on the guide vertical shaft is adapted to the gear.

[0024] A method for soil sampling using the soil detection and sampling device for saline-alkali land remediation comprises the following steps:

[0025] Step 1: Move the base to the top of the soil to be sampled and control the movement of the lifting assembly;

[0026] Step 2: When the lifting assembly is in motion, the distance sensor controls the driving structure to move, causing the support column to move downward relative to the fixed sleeve to lift the base;

[0027] Step 3: The lifting assembly continues to move, so that under the action of the differential structure, the sampling head can deflect 180° along the guide vertical axis, and then the sampling head moves vertically downward;

[0028] Step 4: When the sampling head moves vertically downward, the transmission structure is activated to drive the sampling head to rotate so that the sampling head rotates into the soil;

[0029] Step 5: The sampling head moves in the reverse direction until it reaches the reset state, and the folding assembly cooperates with the abutment plate to separate the two semi-cylinders, so that the soil between the two semi-cylinders falls into the receiver on the base.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] By setting the lifting assembly and differential structure, the sampling head can be driven to undergo longitudinal and lateral displacements during the process of the lifting sleeve shaft rising or falling, so that the sampling head can have a sampling position and a release position, and the switching speed of the two positions is faster, thereby improving the sampling efficiency to a certain extent. In the process of sampling, the sampling head performs a rotation action, making it more convenient and easy to enter the soil, reducing the load of the device;

[0032] By setting up the folding assembly and the abutment plate, the two semi-cylinders can maintain a close fit during the sampling action, thereby ensuring that the semi-cylinders can enter the soil with less resistance and lift the soil. When the two semi-cylinders rise to the highest point of the stroke, the two semi-cylinders can move away from each other to release the soil. In conjunction with the station switching of the sampling head, the automation degree of the sampling device is greatly improved, the operating difficulty is reduced, and the sampling efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 The present invention is a structural schematic diagram of an embodiment of a soil detection and sampling device for saline-alkali land restoration.

[0034] Figure 2 This is a structural schematic diagram from another angle of an embodiment of a soil detection and sampling device for saline-alkali land remediation.

[0035] Figure 3 This is a schematic structural diagram from another angle of an embodiment of a soil detection and sampling device for saline-alkali land remediation.

[0036] Figure 4 This is a schematic diagram of the structure of a folding component in one embodiment of a soil detection and sampling device for saline-alkali land remediation.

[0037] Figure 5 for Figure 4 A magnified view of the structure at center.

[0038] Figure 6 An exploded view of an annular connection kit in one embodiment of a soil detection and sampling device for saline-alkali land remediation.

[0039] Figure 7 An exploded view of a differential structure in one embodiment of a soil detection and sampling device for saline-alkali land remediation.

[0040] Figure 8 The present invention is a schematic structural diagram of a lifting sleeve shaft in one embodiment of a soil detection and sampling device for saline-alkali land remediation.

[0041] Fig. 9 This is a schematic structural diagram of a support column and a driving structure in one embodiment of a soil detection and sampling device for saline-alkali land remediation.

[0042] In the figure: 1, base; 2, guide shaft; 201, vertical groove No. 1; 202, spiral groove; 203, vertical groove No. 2; 3, lifting sleeve; 301, convex shaft; 302, annular groove; 4, connecting plate; 5, collar; 6, distance sensor; 7, threaded sleeve; 8, screw rod; 9, driving device; 10, semi-cylinder; 1001, inclined arc surface; 11, protrusion; 12, connecting rod; 13, rotating frame; 1301, slide groove; 14, slider; 15, No. 1 Pulley; 16, side plate; 1601, inclined groove No. 1; 17, annular member; 1701, annular cavity; 18, sliding connection; 19, trigger shaft; 1901, limit ring; 20, cylindrical spring; 21, abutment plate; 22, fixed sleeve; 23, support column; 24, double-headed cylinder; 25, pulley No. 2; 26, connecting plate; 2601, inclined groove No. 2; 27, connecting shaft; 28, belt; 29, bevel gear set; 30, gear; 31, rack plate. DETAILED DESCRIPTION

[0043] 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.

[0044] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0045] See also Figures 1 to 9 In an embodiment of the present invention, a soil detection sampling device for saline-alkali land restoration includes: a base 1, a lifting component, a differential structure, a retracting component and an abutment plate 21, so that when the sampling action is performed, the two semi-cylinders 10 can maintain a fitted state, thereby ensuring that the semi-cylinders 10 can enter the soil with less resistance and bring up the soil, and when the two semi-cylinders 10 rise to the high point of the stroke, the two semi-cylinders 10 can move away from each other, thereby releasing the soil, and cooperating with the station switching of the sampling head, the automation degree of the sampling device is greatly improved, the operation difficulty is reduced, and the sampling efficiency is improved.

[0046] A sampling head is arranged on the base 1, and the sampling head is formed by two groups of semi-cylinders 10, wherein the bottom of the semi-cylinder 10 is formed with an inclined arc surface 1001, and a protrusion 11 is arranged on the circumferential outer wall of the semi-cylinder 10, and the protrusion 11 on the two groups of semi-cylinders 10 can form a spiral protrusion when the two groups of semi-cylinders 10 are closed.

[0047] When taking soil samples, the folding assembly can bring the two groups of semi-cylinders 10 together and fit them together. At this time, when the sampling head is screwed downward, the inclined arc surface 1001 can generate a force on the semi-cylinders 10 and increase the abutment force between the two semi-cylinders 10, thereby preventing the two semi-cylinders 10 from separating during the sampling process. In addition, by setting the spiral protrusion, when the sampling head is screwed downward, the spiral protrusion can generate an interaction force with the soil, making it easier for the sampling head to be screwed downward.

[0048] See also Figure 1 , Figure 2 , Figure 7 , the differential structure is connected to the lifting assembly, and the differential assembly can make the connecting plate 4 deflect 180° relative to the base 1 when the connecting plate 4 moves. The differential structure includes a guide vertical shaft 2 fixedly mounted on the base 1, and a lifting sleeve shaft 3 connected to the connecting plate 4 is slidably sleeved on the guide vertical shaft 2. A convex shaft 301 is provided on the inner wall of the lifting sleeve shaft 3, and the convex shaft 301 can slide in a guide groove formed on the guide vertical shaft 2;

[0049] The guide groove comprises a spiral groove 202 which is 180° spirally formed along the axial direction of the guide vertical shaft 2, and the ends of the spiral groove 202 are connected to a first vertical groove 201 and a second vertical groove 203;

[0050] The lifting assembly is connected to the base 1, and a connecting plate 4 connected to the sampling head is arranged on the lifting assembly. When the lifting assembly is in motion, the connecting plate 4 can move in the vertical direction of the space;

[0051] The lifting assembly includes a driving device 9 fixedly mounted on the base 1, the output shaft of the driving device 9 is connected to a screw rod 8 rotatably mounted on the base 1, the screw rod 8 is provided with a threaded sleeve 7 threadedly connected thereto, the threaded sleeve 7 is connected with a collar 5, and the collar 5 is slidably connected to an annular groove 302 circumferentially arranged on the lifting sleeve shaft 3;

[0052] The connecting shaft 27 is connected to the guide vertical shaft 2 through a transmission structure;

[0053] The transmission structure includes a bevel gear set 29 arranged on the connecting plate 4, the bevel gear set 29 is connected to the connecting shaft 27 through a belt 28, and a gear 30 is connected to the bevel gear set 29, and a rack plate 31 arranged on the guide vertical shaft 2 is adapted to the gear 30.

[0054] When in use, the driving device 9 is controlled to work, and the output shaft of the driving device 9 can drive the screw rod 8 connected thereto to rotate, so that the threaded sleeve 7 arranged on the screw rod 8 and threadedly connected thereto can move along the length direction of the screw rod 8. For the sake of convenience of understanding, the sampling head is located directly above the adapter on the base 1 as the initial state, and the following description is made:

[0055] When the threaded sleeve 7 moves downward, it can drive the lifting sleeve shaft 3 to move downward along the length direction of the guide vertical shaft 2 through the collar 5. During this process, the convex shaft 301 will move along the second vertical groove 203, the spiral groove 202 and the first vertical groove 201 in sequence, and when the convex shaft 301 moves in the spiral groove 202, the lifting sleeve shaft 3 can produce a 180° rotation, so that the sampling head can rotate 180° around the guide vertical shaft 2 and rotate to the sampling position. Later, when the convex shaft 301 moves into the first vertical groove 201, the sampling head will move vertically downward. At the same time, the gear 30 will mesh with the rack plate 31 at this time, thereby driving the gear 30 to rotate. During the rotation of the gear 30, the sampling head is driven to rotate through the bevel gear set 29 and the belt 28, so that the sampling head can rotate while moving downward, thereby generating a screw-in action, so that it is more convenient to screw in when inserted into the soil.

[0056] It should be noted that the spiral trajectory formed by the downward rotation of the sampling head is the same as the trajectory of the spiral protrusion, so that when the sampling head is rotated downward, it can further enter the soil more conveniently and easily with the cooperation of the spiral protrusion and the soil.

[0057] Through the above arrangement, the sampling head can be driven to undergo longitudinal and lateral displacements during the rising or falling process of the lifting sleeve shaft 3, so that the sampling head can have a sampling position and a releasing position, and the switching speed of the two positions is faster, thereby improving the sampling efficiency to a certain extent. In the sampling process, the sampling head performs a screwing action, making it more convenient and easy to enter the soil, thereby reducing the load of the device.

[0058] See also Figures 4 to 6The folding assembly connects the two groups of semi-cylinders 10, and the folding assembly can keep the two groups of semi-cylinders 10 in a folded and closed state. The folding assembly includes a connecting shaft 27 rotatably mounted on the connecting plate 4, and a rotating frame 13 is fixed to the end of the connecting shaft 27 away from the connecting plate 4. Two slide grooves 1301 are symmetrically arranged on the rotating frame 13, and a slider 14 is slidably installed in the slide groove 1301. One side of the slider 14 is connected to the semi-cylinder 10 through a connecting rod 12, and the other side is provided with a first pulley 15;

[0059] The folding assembly further includes an energy storage structure disposed on the link plate 4 and connected to the first pulley 15, the energy storage structure is adapted to the abutment plate 21, and a side plate 16 is connected to the energy storage structure, a first inclined groove 1601 is formed on the side plate 16, and the first pulley 15 can roll in the first inclined groove 1601;

[0060] The energy storage structure includes a trigger shaft 19 that is slidably arranged through the connecting plate 4, a limit ring 1901 is formed on the trigger shaft 19, and a cylindrical spring 20 is also sleeved on the trigger shaft 19, one end of the cylindrical spring 20 is connected to the connecting plate 4, and the other end is connected to the limit ring 1901;

[0061] The trigger shaft 19 is connected to the side plate 16 via an annular connection kit, the annular connection kit includes an annular member 17 fixedly connected to the side plate 16, an annular cavity 1701 is formed in the annular member 17, a sliding connection portion 18 is slidably installed in the annular cavity 1701, and the sliding connection portion 18 is fixedly connected to the trigger shaft 19;

[0062] The abutment plate 21 is connected to the lifting assembly. When the link plate 4 rises to the highest point of the stroke, the abutment plate 21 can trigger the movement of the folding assembly to make the two groups of semi-cylinders 10 move away from each other.

[0063] In the initial state, the cylindrical spring 20 is in a compressed state, and the side plate 16 is at the highest point of the stroke. At this time, the No. 1 pulley 15 cooperates with the No. 1 inclined groove 1601, which can make the two semi-cylinders 10 fit each other, ensuring that when the two are screwed downward, they can form a cylindrical state and can lift the soil after the sampling is completed.

[0064] When sampling is completed, the two semi-cylinders 10 will move upward, and soil will be carried between them until the two semi-cylinders 10 move to the highest point of the stroke, and the trigger shaft 19 will abut against the abutment plate 21, causing the trigger shaft 19 to move downward relative to the connecting plate 4, so that the cylindrical spring 20 is further compressed, and the side plate 16 can move toward the semi-cylinder 10. During this process, the No. 1 inclined groove 1601 cooperates with the No. 1 pulley 15 to enable the slider 14 to move in the slide groove 1301, thereby driving the two semi-cylinders 10 to move away from each other. At this time, the soil between the two semi-cylinders 10 can fall into the receiver under the action of gravity.

[0065] When the two semi-cylinders 10 rotate, the side plate 16 drives the annular member 17 to rotate. At this time, the annular member 17 can maintain a sliding connection with the sliding connection part 18, so that the two semi-cylinders 10 can rotate and when the trigger shaft 19 moves, the two semi-cylinders 10 can be driven to move away from each other.

[0066] Through the above arrangement, the two semi-cylinders 10 can maintain a close fit during the sampling operation, thereby ensuring that the semi-cylinders 10 can enter the soil with less resistance and lift the soil. When the two semi-cylinders 10 rise to the highest point of the stroke, the two semi-cylinders 10 can move away from each other to release the soil. In conjunction with the station switching of the sampling head, the automation level of the sampling device is greatly improved, the operating difficulty is reduced, and the sampling efficiency is improved.

[0067] See also Figure 3 , Fig. 9 , a distance sensor 6 is provided between the threaded sleeve 7 and the collar 5;

[0068] The base 1 is provided with a plurality of sets of fixed sleeves 22 diagonally, and a support column 23 is slidably installed in the fixed sleeve 22. The support column 23 is connected to a driving structure provided on the base 1, and the driving structure communicates with the distance sensor 6;

[0069] The driving structure comprises a double-headed cylinder 24 fixedly mounted on the base 1, and a second pulley 25 is rotatably mounted on the action end of the double-headed cylinder 24;

[0070] The driving structure further includes a connecting plate 26 fixedly connected to the supporting column 23 and passing through the fixing sleeve 22 . A second inclined groove 2601 is provided on the connecting plate 26 . The second pulley 25 can roll in the second inclined groove 2601 .

[0071] When the threaded sleeve 7 moves downward, the distance sensor 6 detects the distance between it and the base 1, and then controls the double-headed cylinder 24 to move, so that the double-headed cylinder 24 can drive the two No. 2 pulleys 25 to move away from each other. At the same time, the No. 2 pulley 25 cooperates with the No. 2 inclined groove 2601 to enable the connecting plate 26 to move downward, so that the support column 23 moves downward, and the base 1 is lifted up to fix the base 1, thereby improving the stability of the base 1 and the accuracy of sampling during the sampling process.

[0072] A method for soil sampling using the soil detection and sampling device for saline-alkali land remediation comprises the following steps:

[0073] Step 1: Move the base 1 to the top of the soil to be sampled and control the movement of the lifting assembly;

[0074] Step 2: When the lifting assembly is in motion, the distance sensor 6 controls the driving structure to move, causing the support column 23 to move downward relative to the fixed sleeve 22 to lift the base 1;

[0075] Step 3: The lifting assembly continues to move, so that under the action of the differential structure, the sampling head can deflect 180° along the guide vertical axis 2, and then the sampling head moves vertically downward;

[0076] Step 4: When the sampling head moves vertically downward, the transmission structure is activated to drive the sampling head to rotate so that the sampling head rotates into the soil;

[0077] Step 5: The sampling head moves in the reverse direction until it reaches the reset state, and the folding assembly cooperates with the abutment plate 21 to separate the two semi-cylinders 10 so that the soil between the two semi-cylinders 10 falls into the receiver on the base 1 .

[0078] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0079] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A soil detection sampling device for saline-alkali land remediation, characterized in that: include: A base (1), wherein a sampling head is arranged on the base (1), and the sampling head is formed by two groups of semi-cylinders (10); A lifting component connected to the base (1), the lifting component being provided with a connecting plate (4) connected to the sampling head, and when the lifting component is in motion, the connecting plate (4) can move in a vertical direction in space; A differential structure connected to the lifting assembly, wherein the differential structure is capable of causing the connecting plate (4) to deflect 180 degrees relative to the base (1) when the connecting plate (4) moves; A folding assembly, connecting the two groups of semi-cylinders (10), wherein the folding assembly can keep the two groups of semi-cylinders (10) in a folded and closed state; an abutment plate (21) connected to the lifting assembly, and the abutment plate (21) can trigger the movement of the folding assembly when the connecting plate (4) rises to the highest point of the stroke, thereby causing the two groups of semi-cylinders (10) to move away from each other; The differential structure comprises a guide vertical shaft (2) fixedly mounted on the base (1); a lifting sleeve shaft (3) connected to the connecting plate (4) is slidably sleeved on the guide vertical shaft (2); a convex shaft (301) is provided on the inner wall of the lifting sleeve shaft (3); and the convex shaft (301) is capable of sliding in a guide groove formed on the guide vertical shaft (2); The lifting assembly comprises a driving device (9) fixedly mounted on the base (1), the output shaft of the driving device (9) being connected to a screw rod (8) rotatably mounted on the base (1), the screw rod (8) being provided with a threaded sleeve (7) threadedly connected thereto, the threaded sleeve (7) being connected with a collar (5), the collar (5) being slidably connected to an annular groove (302) circumferentially arranged on the lifting sleeve shaft (3); The folding assembly comprises a connecting shaft (27) rotatably mounted on the connecting plate (4); a rotating frame (13) is fixed to one end of the connecting shaft (27) away from the connecting plate (4); two sliding grooves (1301) are symmetrically arranged on the rotating frame (13); a slider (14) is slidably mounted in the sliding groove (1301); one side of the slider (14) is connected to the semi-cylinder (10) via a connecting rod (12); and the other side is provided with a first pulley (15); The folding assembly further comprises an energy storage structure arranged on the link plate (4) and connected to the first pulley (15), the energy storage structure being adapted to the abutment plate (21), and the energy storage structure being connected to a side plate (16), the side plate (16) being formed with a first inclined groove (1601), and the first pulley (15) being able to roll in the first inclined groove (1601); The energy storage structure comprises a trigger shaft (19) which is slidably arranged through the connecting plate (4), a limit ring (1901) being formed on the trigger shaft (19), and a columnar spring (20) is also sleeved on the trigger shaft (19), one end of the columnar spring (20) is connected to the connecting plate (4), and the other end is connected to the limit ring (1901); The trigger shaft (19) is connected to the side plate (16) via an annular connection kit, wherein the annular connection kit comprises an annular member (17) fixedly connected to the side plate (16), an annular cavity (1701) is formed in the annular member (17), a sliding connection portion (18) is slidably installed in the annular cavity (1701), and the sliding connection portion (18) is fixedly connected to the trigger shaft (19).

2. A soil detection sampling device for saline-alkali land remediation according to claim 1, characterized in that: The bottom of the semi-cylinder (10) is formed with an inclined arc surface (1001), and a protrusion (11) is arranged on the circumferential outer wall of the semi-cylinder (10). The protrusions (11) on the two groups of semi-cylinders (10) can form a spiral protrusion when the two groups of semi-cylinders (10) are closed.

3. The soil detection sampling device for saline-alkali land remediation according to claim 1 is characterized in that: The guide groove comprises a spiral groove (202) which is 180° spirally arranged along the axial direction of the guide vertical shaft (2), and the ends of the spiral groove (202) are connected to a first vertical groove (201) and a second vertical groove (203).

4. The soil detection sampling device for saline-alkali land remediation according to claim 1 is characterized in that: The connecting shaft (27) is connected to the guide vertical shaft (2) via a transmission structure; The transmission structure comprises a bevel gear set (29) arranged on the connecting plate (4), the bevel gear set (29) is connected to the connecting shaft (27) via a belt (28), and a gear (30) is connected to the bevel gear set (29), and a rack plate (31) arranged on the guide vertical shaft (2) is adapted to the gear (30).

5. A method for soil sampling using the soil detection and sampling device for saline-alkali land remediation according to any one of claims 1 to 4, characterized in that: The following steps are involved: Step 1: Move the base (1) above the soil to be sampled and control the movement of the lifting assembly; Step 2: When the lifting assembly is in motion, the distance sensor (6) arranged between the threaded sleeve (7) and the collar (5) controls the movement of the driving structure arranged on the base (1), and the base (1) is provided with a plurality of groups of fixed sleeves (22) diagonally, and a support column (23) is slidably installed in the fixed sleeve (22), and the support column (23) is connected to the driving structure, and the driving structure communicates with the distance sensor (6); The driving structure comprises a double-headed cylinder (24) fixedly mounted on the base (1), and a second pulley (25) is rotatably mounted on the action end of the double-headed cylinder (24); The driving structure further comprises a connecting plate (26) fixedly connected to the supporting column (23) and penetrating the fixing sleeve (22), wherein a second inclined groove (2601) is provided on the connecting plate (26), and the second pulley (25) can roll in the second inclined groove (2601); The driving structure is actuated to cause the support column (23) to move downward relative to the fixed sleeve (22) to lift the base (1); Step 3: The lifting assembly continues to move, so that under the action of the differential structure, the sampling head can deflect 180° along the guide vertical axis (2), and then the sampling head moves vertically downward; Step 4: When the sampling head moves vertically downward, the transmission structure is activated to drive the sampling head to rotate so that the sampling head rotates into the soil; Step 5: The sampling head moves in the reverse direction until it reaches the reset state, and the folding assembly cooperates with the abutment plate (21) to separate the two semi-cylinders (10), so that the soil between the two semi-cylinders (10) falls into the receiver on the base (1).

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