Geological exploration sampling device and method based on coal mining

Abstract

The invention discloses a geological exploration sampling device and method based on coal mining, and belongs to the technical field of geological exploration. The device is provided with a first sleeve, a second sleeve and a third sleeve which are sequentially sleeved, a first rotating shaft with a drill bit is arranged on the innermost side of each sleeve, each sleeve is provided with a collecting groove, and the three sleeves work independently in a bevel gear meshing mode; in the exploration drilling process, the three sleeves are driven by a screw rod from inside to outside to independently collect shallow, middle and deep geological samples respectively; through cooperation assistance of a baffle and a torque spring, samples at different depths are prevented from being mixed; according to the method, the layered structure and characteristics of coal mine geology can be reflected more comprehensively and accurately, and detailed and reliable geological data basis is provided for subsequent coal mining operation; the problem of mutual interference and confusion of samples in all layers in the exploration sampling process is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of geological exploration, and in particular relates to a geological exploration sampling device and method based on coal mining. Background Art

[0002] In the process of coal mining, geological exploration sampling is an extremely critical preliminary work. Through geological exploration sampling, we can accurately understand the stratified structure, characteristics and other information of coal mine geology, which is of decisive significance for formulating scientific and reasonable mining plans and ensuring mining efficiency and safety; traditional coal mine geological exploration sampling methods can either only obtain geological samples of a single depth, which is difficult to fully reflect the complex stratification of coal mine geology, or can sample multiple layers, but during sampling, the samples of each layer are easy to interfere and confuse each other, and it is impossible to ensure that the samples taken accurately correspond to the geological characteristics of a specific depth, resulting in deviations in the subsequent analysis of the geological structure.

[0003] Therefore, it is necessary to provide a new geological exploration sampling device based on coal mining to solve the above technical problems. Summary of the invention

[0004] The present invention overcomes the shortcomings of the prior art and proposes a geological exploration sampling device and method based on coal mining; the present invention is achieved through the following technical solutions: A geological prospecting sampling device based on coal mining comprises a fixed box, a first motor is fixedly connected inside the fixed box, a first rotating shaft is fixedly connected at the driving position of the first motor, and a drill bit is fixedly connected at the bottom end of the first rotating shaft; a third threaded rod, a second threaded rod and a first threaded rod are rotatably connected at the bottom of the fixed box, and the third threaded rod, the second threaded rod and the first threaded rod are arranged in sequence from one side of the first rotating shaft to the direction of the outer edge of the fixed box; a first sleeve is threadedly connected to the third threaded rod, a second sleeve is threadedly connected to the second threaded rod, and a third sleeve is threadedly connected to the first threaded rod; and the first rotating shaft, the first sleeve, the second sleeve and the third sleeve are sleeved layer by layer from the inside to the outside; The first sleeve, the second sleeve and the third sleeve are all provided with a collecting tank inside; the collecting tank is connected to an air pump through an air pipe; the drill bit at the bottom of the first rotating shaft passes through the first sleeve, the second sleeve and the third sleeve respectively and is located at the bottom; the diameter of the drill bit is larger than the outer diameter of the third sleeve; A second cylinder is fixedly connected to one side of the bottom of the fixed box, a second motor is fixedly connected to the second cylinder drive, a second rotating shaft is fixedly connected to the second motor drive, and a first bevel gear is fixedly connected to the other end of the second rotating shaft; the tops of the first threaded rod, the second threaded rod and the third threaded rod are all fixedly connected to the second bevel gear, and when the first bevel gear moves to the corresponding position, it is meshed and connected with the corresponding second bevel gear; Two assembled baffles are provided at the bottom of the first sleeve, the second sleeve and the third sleeve; the baffle is a semicircular ring, and after the two baffles are assembled, a ring structure with a through hole in the middle is formed; the first rotating shaft passes through the through hole to facilitate up and down movement; the outer edge of the baffle is connected to a torque spring; the other end of the torque spring is connected to the corresponding inner wall of the sleeve.

[0005] Furthermore, three second limiting rods are fixedly connected to the bottom of the fixed box, and the three second limiting rods are slidably connected to the first sleeve, the second sleeve and the third sleeve respectively.

[0006] Furthermore, a protection box is fixedly connected to the second cylinder driving portion, and a second motor is fixedly connected inside the protection box.

[0007] Furthermore, air pumps are fixedly connected to both sides of the tops of the first sleeve, the second sleeve and the third sleeve, and the air pipes of the air pumps are connected to the corresponding collection tanks.

[0008] Furthermore, it also includes a body of the tracked vehicle, a rotating plate is rotatably connected to one side of the top of the body, a support plate is fixedly connected to one side of the top of the rotating plate, a first cylinder is fixedly connected below the support plate, and the fixed box is fixedly connected to the drive of the first cylinder.

[0009] Furthermore, a first limiting rod is fixedly connected to one side of the rotating plate, and the first limiting rod is slidably connected to the fixed box.

[0010] A geological prospecting sampling method based on coal mining adopts the geological prospecting sampling device based on coal mining and comprises the following steps: Step 1: Start the first motor, the first motor drives the first rotating shaft to rotate, and the drill bit at the bottom of the first rotating shaft rotates accordingly, and the drill bit starts to drill into the coal mine geological layer; when the drill bit drills to a certain depth, turn off the first motor; Step 2: Start the second air cylinder, the second air cylinder pushes the second motor to move, the second motor drives the second rotating shaft to rotate, and then the first bevel gear on the second rotating shaft is meshed with the second bevel gear at the top of the first threaded rod; the rotation of the second motor drives the first threaded rod to rotate, so that the third sleeve moves downward along the first threaded rod and enters the geological layer at the shallow position; then start the air pump, and under the action of the air pressure difference, the geological sample at the shallow position is sucked into the collection tank inside the third sleeve; Step 3: When the sampling is completed, the second motor reverses to make the third sleeve rise back to the initial position, and then the air pump is turned off to collect the geological samples inside the collection tank of the third sleeve; Step 4: Continue to push the second motor to move, so that the first bevel gear on the second rotating shaft meshes with the second bevel gear at the top of the second threaded rod; the rotation of the second motor drives the second threaded rod to rotate, and the second sleeve moves downward along the second threaded rod, pushing open the baffle at the bottom of the third sleeve to enter the geological layer at the middle position; start the air pump to suck the geological sample at the middle position into the collection tank inside the second sleeve; Step 5: When sampling is completed, the second motor reverses to make the second sleeve rise back to the initial position. At this time, the baffle at the bottom of the third sleeve is reset under the action of the torque spring connected thereto; then the air pump is turned off to collect the geological samples inside the collection tank of the second sleeve; Step 6: Continue to push the second motor to move, so that the first bevel gear on the second rotating shaft is meshed with the second bevel gear at the top of the third threaded rod; the rotation of the second motor drives the third threaded rod to rotate, so that the first sleeve moves downward along the third threaded rod, and pushes open the baffles at the bottom of the second sleeve and the third sleeve to enter the geological layer at a deep position; then start the air pump to suck the geological samples at the deep position into the collection tank inside the first sleeve; Step 7. When sampling is completed, the second motor reverses to make the first sleeve rise back to the initial position. At this time, the baffles at the bottom of the third sleeve and the second sleeve are reset under the action of the torque spring connected thereto; then the air pump is turned off to collect the geological samples inside the collection tank of the first sleeve.

[0011] Furthermore, when geological exploration sampling is required, a geological exploration sampling device based on coal mining is first moved as a whole to the location where sampling is required, and the drilling point is finally determined; the fixed box is driven down to a suitable height position, and then the first motor is started.

[0012] The beneficial effects of the present invention compared with the prior art are as follows: The present invention provides a geological exploration sampling device and method based on coal mining. By setting up multiple sleeves and their driving structures, they can go deep into different depths in sequence without interfering with each other, and can accurately obtain geological samples at different depths, comprehensively and accurately reflect the layered structure and characteristics of coal mine geology, provide detailed and reliable geological data basis for subsequent coal mining operations, help to formulate scientific and reasonable mining plans, and improve mining efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of the overall structure of a geological prospecting and sampling device based on coal mining provided by the present invention; Figure 2 for Figure 1 A schematic diagram of the connection structure between the first rotating shaft and the drill bit shown; Figure 3 for Figure 1A schematic diagram of the structures of the first sleeve, the second sleeve and the third sleeve shown; Figure 4 is a schematic diagram of the positions between the first threaded rod, the second threaded rod, and the third threaded rod; Figure 5 is a schematic diagram of the bottom structure of the third sleeve; Figure 6 is a schematic diagram of the top structure of the third sleeve; Figure 7 Schematic diagram of the structure of the baffle.

[0014] Numbers in the figure: 1. Car body; 2. Rotating plate; 3. Fixed box; 4. First limiting rod; 5. Support plate; 6. First cylinder; 7. First rotating shaft; 8. First sleeve; 9. Second sleeve; 10. Third sleeve; 11. Drill bit; 12. First motor; 13. Second cylinder; 14. Air pump; 15. First threaded rod; 16. Second threaded rod; 17. Third threaded rod; 18. Protective box; 19. Second motor; 20. Second rotating shaft; 21. First bevel gear; 22. Second bevel gear; 23. Second limiting rod; 24. Collecting tank; 25. Baffle; 26. Torque spring. DETAILED DESCRIPTION

[0015] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is further described in detail in conjunction with the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. The technical solutions of the present invention are described in detail below in conjunction with the embodiments and the accompanying drawings, but the scope of protection is not limited thereto.

[0016] See also Figures 1 to 7 This embodiment proposes a geological prospecting sampling device based on coal mining, including a body 1 of a crawler vehicle, a rotating plate 2 is rotatably connected to one side of the top of the body 1, a support plate 5 is fixedly connected to one side of the top of the rotating plate 2, a first cylinder 6 is fixedly connected below the support plate 5, and a fixed box 3 is fixedly connected at the driving position of the first cylinder 6; under the driving action of the first cylinder 6, the fixed box 3 can be raised and lowered. In order to keep the fixed box 3 stable during the lifting process, a first limiting rod 4 is fixedly connected to one side of the rotating plate 2, and the first limiting rod 4 is slidably connected to the fixed box 3, which plays a guiding and limiting role in the movement of the fixed box 3.

[0017] A first motor 12 is fixedly connected inside the fixed box 3, a first rotating shaft 7 is fixedly connected at the driving position of the first motor 12, and a drill bit 11 is fixedly connected to the bottom end of the first rotating shaft 7; a third threaded rod 17, a second threaded rod 16 and a first threaded rod 15 are rotatably connected to the bottom of the fixed box 3, and the third threaded rod 17, the second threaded rod 16 and the first threaded rod 15 are arranged in sequence from one side of the first rotating shaft 7 to the outer edge of the fixed box 3; the third threaded rod 17 is threadedly connected to the first sleeve 8, and the second threaded rod 16 is threadedly connected to the first sleeve 8. A second sleeve 9 is connected, and a third sleeve 10 is threadedly connected to the first threaded rod 15; and the first rotating shaft 7, the first sleeve 8, the second sleeve 9 and the third sleeve 10 are nested from the inside to the outside: that is, the inner diameter of the third sleeve 10 is larger than the outer diameter of the second sleeve 9, and the inner diameter of the second sleeve 9 is larger than the outer diameter of the first sleeve 8, so that the sleeves can be nested with each other when stored or extended, saving space, and during the sampling process, they can go deep into different depths in sequence without interfering with each other, which is conducive to the stratified collection and differentiation of geological samples at different depths.

[0018] The first sleeve 8, the second sleeve 9 and the third sleeve 10 are all provided with collecting grooves 24; the drill bit 11 at the bottom of the first rotating shaft 7 passes through the first sleeve 8, the second sleeve 9 and the third sleeve 10 respectively and is located at the lower end; the first motor 12 drives the first rotating shaft 7 to rotate, thereby causing the drill bit 11 to rotate and drill into the geological layer, and the diameter of the drill bit 11 is larger than the outer diameter of the third sleeve 10, ensuring that the drill bit 11 enters the geological layer before the three sleeves for preliminary drilling operations.

[0019] Air pumps 14 are fixedly connected to both sides of the top of the first sleeve 8, the second sleeve 9 and the third sleeve 10. The air pipe of the air pump 14 is connected to the corresponding collection tank 24, which is the key to realizing the suction of geological samples into the collection tank 24. The air pump 14 uses the air pressure difference to collect the samples into the collection tank 24, ensuring the effective realization of the sampling function.

[0020] A second cylinder 13 is fixedly connected to one side of the bottom of the fixed box 3, a protection box 18 is fixedly connected to the driving position of the second cylinder 13, a second motor 19 is fixedly connected to the inside of the protection box 18, a second rotating shaft 20 is fixedly connected to the driving position of the second motor 19, and a first bevel gear 21 is fixedly connected to the other end of the second rotating shaft 20; the tops of the first threaded rod 15, the second threaded rod 16 and the third threaded rod 17 are all fixedly connected to the second bevel gear 22, and the second bevel gear 22 can be meshed and connected with the first bevel gear 21; the second cylinder 13 can push the protection box 18 to move, so that the second motor 19 inside and the first bevel gear 21 connected thereto reach a suitable position to mesh with the second bevel gear 22 at the top of the corresponding threaded rod, so that the power of the second motor 19 can be transmitted to each threaded rod, thereby driving the sleeve threadedly connected thereto to rise and fall.

[0021] Three second limiting rods 23 are fixedly connected to the bottom of the fixed box 3. The three second limiting rods 23 are slidably connected to the first sleeve 8, the second sleeve 9 and the third sleeve 10 respectively, so as to limit the rotation of the sleeve and guide the sleeve to rise and fall linearly.

[0022] The bottom of the first sleeve 8, the second sleeve 9 and the third sleeve 10 are all provided with two assembled baffles 25; the baffle 25 is a semicircular ring, and the two baffles 25 are assembled to form an annular structure with a through hole in the middle; the first rotating shaft 7 passes through the through hole to facilitate up and down movement; the outer edge of the baffle 25 is connected to a torque spring 26; the other end of the torque spring 26 is connected to the corresponding inner wall of the sleeve. When sampling, the elastic force of the torque spring 26 is used to make the baffle 25 block the geological sample from entering the corresponding sleeve to prevent the geological sample from affecting the subsequent use of the sleeve. When the inner sleeve is extended, under the action of the driving force, the baffle 25 is knocked open to make the inner sleeve extend, and when the inner sleeve is retracted, the baffle 25 is reset under the action of the torque spring 26.

[0023] The three sleeves can be used to collect geological samples at different depths, which can more comprehensively and accurately reflect the stratified structure and characteristics of coal mine geology, provide detailed and reliable geological data basis for subsequent coal mining operations, and help formulate scientific and reasonable mining plans and improve mining efficiency.

[0024] The present embodiment provides a geological prospecting sampling method based on coal mining, which uses the geological prospecting sampling device based on coal mining, and specifically includes the following steps: Step 1: When geological exploration sampling is required, first move the entire device to the location where sampling is required through the body 1 of the crawler vehicle, rotate the rotating plate 2 to fine-tune the angle of the rotating plate 2, and finally determine the drilling point; Step 2: Start the first cylinder 6 to drive the fixed box 3 down to a suitable height, then start the first motor 12, the first motor 12 drives the first rotating shaft 7 to rotate, and the drill bit 11 at the bottom of the first rotating shaft 7 rotates accordingly, and the drill bit 11 begins to drill into the geological layer of the coal mine; the function of the drill bit 11 is to loosen the geological layer to facilitate subsequent sampling work. When the drill bit 11 drills to a certain depth, turn off the first motor 12.

[0025] Step 3, start the second cylinder 13, the second cylinder 13 pushes the protection box 18 to move, and the second motor 19 in the protection box 18 drives the second shaft 20 to rotate, so that the first bevel gear 21 on the second shaft 20 is engaged with the second bevel gear 22 at the top of the first threaded rod 15. When the first bevel gear 21 is meshed with the second bevel gear 22 at the top of the first threaded rod 15, the rotation of the second motor 19 drives the first threaded rod 15 to rotate. Since the first threaded rod 15 is threadedly connected to the third sleeve 10, and the third sleeve 10 is subject to the sliding limiting action of the second limiting rod 23, the third sleeve 10 can move downward along the first threaded rod 15 and enter the geological layer at a shallow position; then the air pumps 14 on both sides of the top of the third sleeve 10 are started, and the air pumps 14 on both sides of the top of the third sleeve 10 are connected to the collecting groove 24 opened on the third sleeve 10 through the air pipe. Under the action of the air pressure difference, the geological samples at the shallow position are sucked into the collecting groove 24 inside the third sleeve 10, and under the action of the torque spring 26 at the bottom of the third sleeve 10, the baffle 25 at the bottom of the third sleeve 10 blocks the geological samples from entering the inside of the third sleeve 10.

[0026] Step 4: When sampling is completed, the second motor 19 is reversed to make the third sleeve 10 rise back to the initial position, and then the air pump 14 on the third sleeve 10 is closed to collect the geological samples inside the collection tank 24 of the third sleeve 10.

[0027] Step 5, start the second cylinder 13, the second cylinder 13 pushes the protection box 18 to move, and the second motor 19 in the protection box 18 drives the second shaft 20 to rotate, thereby making the first bevel gear 21 on the second shaft 20 mesh with the second bevel gear 22 at the top of the second threaded rod 16. When the first bevel gear 21 is meshed with the second bevel gear 22 at the top of the second threaded rod 16, the rotation of the second motor 19 drives the second threaded rod 16 to rotate. Since the second threaded rod 16 is threadedly connected to the second sleeve 9, the second sleeve 9 can move downward along the second threaded rod 16, push open the baffle 25 at the bottom of the third sleeve 10, and enter the geological layer at the middle position; then the air pumps 14 on both sides of the top of the second sleeve 9 are started, and the air pumps 14 on both sides of the top of the second sleeve 9 are connected with the collecting groove 24 opened on the second sleeve 9 through the air pipe. Under the action of the air pressure difference, the geological sample at the middle position is sucked into the collecting groove 24 inside the second sleeve 9, and under the action of the torque spring 26 at the bottom of the second sleeve 9, the baffle 25 at the bottom of the second sleeve 9 blocks the geological sample from entering the inside of the second sleeve 9.

[0028] Step 6. When sampling is completed, the second motor 19 reverses to make the second sleeve 9 rise back to the initial position. At this time, the baffle 25 at the bottom of the third sleeve 10 is reset under the action of the torque spring 26 connected thereto; then the air pump 14 on the second sleeve 9 is turned off to collect the geological samples inside the collection tank 24 of the second sleeve 9.

[0029] Step 7, start the second cylinder 13, the second cylinder 13 pushes the protection box 18 to move, and the second motor 19 in the protection box 18 drives the second shaft 20 to rotate, thereby making the first bevel gear 21 on the second shaft 20 mesh with the second bevel gear 22 at the top of the third threaded rod 17. When the first bevel gear 21 is meshed with the second bevel gear 22 at the top of the third threaded rod 17, the rotation of the second motor 19 drives the third threaded rod 17 to rotate. Since the third threaded rod 17 is threadedly connected to the first sleeve 8, the first sleeve 8 can move downward along the third threaded rod 17 and push open the baffles 25 at the bottom of the second sleeve 9 and the third sleeve 10 to enter the geological layer at a deep position; then the air pumps 14 on both sides of the top of the first sleeve 8 are started, and the air pumps 14 on both sides of the top of the first sleeve 8 are connected with the collecting groove 24 opened on the first sleeve 8 through the air pipe. Under the action of the air pressure difference, the geological samples at the deep position are sucked into the collecting groove 24 inside the first sleeve 8, and under the action of the torque spring 26 at the bottom of the first sleeve 8, the baffle 25 at the bottom of the first sleeve 8 blocks the geological samples from entering the first sleeve 8.

[0030] Step 8. When sampling is completed, the second motor 19 reverses to make the first sleeve 8 rise back to the initial position. At this time, the baffle 25 at the bottom of the third sleeve 10 and the second sleeve 9 is reset under the action of the torque spring 26 connected thereto; then the air pump 14 on the first sleeve 8 is turned off to collect the geological samples inside the collection tank 24 of the first sleeve 8.

[0031] In this way, geological samples of different depths, such as shallow, medium and deep, can be collected through three sleeves respectively, and the collected geological samples do not interfere with each other, which can more comprehensively and accurately reflect the layered structure and characteristics of coal mine geology, and provide detailed and reliable geological data basis for subsequent coal mining operations, which is helpful to formulate scientific and reasonable mining plans and improve mining efficiency.

[0032] The above content is a further detailed description of the present invention in combination with a specific preferred embodiment. It cannot be determined that the specific embodiments of the present invention are limited to this. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the present invention, which should be regarded as belonging to the present invention and the scope of patent protection determined by the submitted claims.

Claims

1. A geological prospecting sampling device based on coal mining, comprising a fixed box (3), a first motor (12) fixedly connected inside the fixed box (3), a first rotating shaft (7) fixedly connected to the driving part of the first motor (12), and a drill bit (11) fixedly connected to the bottom end of the first rotating shaft (7); characterized in that: The bottom of the fixed box (3) is rotatably connected to a third threaded rod (17), a second threaded rod (16) and a first threaded rod (15), and the third threaded rod (17), the second threaded rod (16) and the first threaded rod (15) are arranged in sequence from one side of the first rotating shaft (7) to the outer edge of the fixed box (3); the third threaded rod (17) is threadedly connected to a first sleeve (8), the second threaded rod (16) is threadedly connected to a second sleeve (9), and the first threaded rod (15) is threadedly connected to a third sleeve (10); and the first rotating shaft (7), the first sleeve (8), the second sleeve (9) and the third sleeve (10) are layered from the inside to the outside; The first sleeve (8), the second sleeve (9) and the third sleeve (10) are all provided with a collecting tank (24); the collecting tank (24) is connected to an air pump (14) via an air pipe; the drill bit (11) at the bottom of the first rotating shaft (7) passes through the first sleeve (8), the second sleeve (9) and the third sleeve (10) respectively and is located at the bottom; the diameter of the drill bit (11) is larger than the outer diameter of the third sleeve (10); A second cylinder (13) is fixedly connected to one side of the bottom of the fixed box (3); a second motor (19) is fixedly connected to the driving portion of the second cylinder (13); a second rotating shaft (20) is fixedly connected to the driving portion of the second motor (19); a first bevel gear (21) is fixedly connected to the other end of the second rotating shaft (20); the tops of the first threaded rod (15), the second threaded rod (16) and the third threaded rod (17) are all fixedly connected to the second bevel gear (22); when the first bevel gear (21) moves to a corresponding position, it meshes with the corresponding second bevel gear (22); The bottom of each of the first sleeve (8), the second sleeve (9) and the third sleeve (10) is provided with two assembled baffles (25); the baffles (25) are semicircular in shape, and after the two baffles (25) are assembled, an annular structure with a through hole in the middle is formed; the first rotating shaft (7) passes through the through hole for easy up and down movement; the outer edge of the baffle (25) is connected to a torque spring (26); the other end of the torque spring (26) is connected to the inner wall of the corresponding sleeve.

2. A geological prospecting sampling device based on coal mining according to claim 1, characterized in that: Three second limiting rods (23) are fixedly connected to the bottom of the fixed box (3), and the three second limiting rods (23) are slidably connected to the first sleeve (8), the second sleeve (9) and the third sleeve (10) respectively.

3. A geological prospecting sampling device based on coal mining according to claim 1, characterized in that: A protection box (18) is fixedly connected to the driving portion of the second cylinder (13), and a second motor (19) is fixedly connected inside the protection box (18).

4. A geological prospecting sampling device based on coal mining according to claim 1, characterized in that: Both sides of the top of the first sleeve (8), the second sleeve (9) and the third sleeve (10) are fixedly connected to an air pump (14), and the air pipe of the air pump (14) is connected to the corresponding collection tank (24).

5. A geological prospecting sampling device based on coal mining according to claim 1, characterized in that: It also includes a body (1) of a crawler vehicle, wherein one side of the top of the body (1) is rotatably connected to a rotating plate (2), one side of the top of the rotating plate (2) is fixedly connected to a support plate (5), a first cylinder (6) is fixedly connected below the support plate (5), and the fixed box (3) is fixedly connected to the driving position of the first cylinder (6).

6. A geological prospecting sampling device based on coal mining according to claim 5, characterized in that: A first limiting rod (4) is fixedly connected to one side of the rotating plate (2), and the first limiting rod (4) is slidably connected to the fixed box (3).

7. A geological prospecting sampling method based on coal mining, characterized in that: A geological prospecting sampling device based on coal mining as described in any one of claims 1 to 6 is used, and includes the following steps: Step 1: starting the first motor (12), the first motor (12) drives the first rotating shaft (7) to rotate, the drill bit (11) at the bottom end of the first rotating shaft (7) rotates accordingly, and the drill bit (11) starts to drill into the coal mine geological layer; when the drill bit (11) drills to a certain depth, the first motor (12) is turned off; Step 2: Start the second air cylinder (13), the second air cylinder (13) drives the second motor (19) to move, the second motor (19) drives the second rotating shaft (20) to rotate, and then the first bevel gear (21) on the second rotating shaft (20) is meshed with the second bevel gear (22) at the top of the first threaded rod (15); the rotation of the second motor (19) drives the first threaded rod (15) to rotate, so that the third sleeve (10) moves downward along the first threaded rod (15) and enters the geological layer at a shallow position; then start the air pump (14), and under the action of the air pressure difference, the geological sample at the shallow position is sucked into the collection tank (24) inside the third sleeve (10); Step 3: After the sampling is completed, the second motor (19) is reversed to make the third sleeve (10) rise back to the initial position, and then the air pump (14) is turned off to collect the geological sample inside the collection tank (24) of the third sleeve (10); Step 4: Continue to push the second motor (19) to move, so that the first bevel gear (21) on the second rotating shaft (20) meshes with the second bevel gear (22) at the top of the second threaded rod (16); the rotation of the second motor (19) drives the second threaded rod (16) to rotate, and the second sleeve (9) moves downward along the second threaded rod (16), pushing open the baffle (25) at the bottom of the third sleeve (10) and entering the geological layer at the middle layer; start the air pump (14) to suck the geological sample at the middle layer into the collection tank (24) inside the second sleeve (9); Step 5: After the sampling is completed, the second motor (19) is reversed to make the second sleeve (9) rise back to the initial position. At this time, the baffle (25) at the bottom of the third sleeve (10) is reset under the action of the torque spring (26) connected thereto; then the air pump (14) is turned off to collect the geological sample inside the collection tank (24) of the second sleeve (9); Step 6: Continue to push the second motor (19) to move, so that the first bevel gear (21) on the second rotating shaft (20) meshes with the second bevel gear (22) at the top of the third threaded rod (17); the rotation of the second motor (19) drives the third threaded rod (17) to rotate, so that the first sleeve (8) moves downward along the third threaded rod (17) and pushes open the baffles (25) at the bottom of the second sleeve (9) and the third sleeve (10), and enters the geological layer at a deep position; then start the air pump (14) to suck the geological sample at the deep position into the collection tank (24) inside the first sleeve (8); Step 7: After the sampling is completed, the second motor (19) is reversed to make the first sleeve (8) rise back to the initial position. At this time, the baffle (25) at the bottom of the third sleeve (10) and the second sleeve (9) is reset under the action of the torque spring (26) connected thereto; then the air pump (14) is turned off to collect the geological sample inside the collection tank (24) of the first sleeve (8).

8. A geological prospecting sampling method based on coal mining according to claim 7, characterized in that: When geological exploration sampling is required, a geological exploration sampling device based on coal mining is first moved as a whole to a location where sampling is required, and finally a drilling point is determined; the fixed box (3) is driven down to a suitable height position, and then the first motor (12) is started.

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