Sampling equipment for exploration of coal mining mine

Abstract

The invention relates to the field of coal mine exploration, in particular to sampling equipment for coal mine exploration, which comprises a shell, a sleeve handle arranged outside the shell, a rotating body rotatably connected in the shell, a sampling pipe fixedly connected to the bottom of the rotating body, a cavity formed in the sampling pipe, a drill bit arranged on the sampling pipe, and a driving assembly arranged in the shell. The driving assembly is used for driving the rotating body to rotate, the shaft body penetrates through the shell, the bottom of the shaft body extends to the side, away from the shell, in the sampling pipe, the side, away from the shell, of the shaft body is fixedly connected with a lifting cover body, and a plurality of sampling openings are formed in the side, close to the lifting cover body, of the sampling pipe in the circumferential direction. According to the soil sampling device, the lifting cover body moves upwards to open the sampling opening, then the lifting cover body continues to move upwards to push the moving frame upwards, and the moving frame pushes the sampling cover to move outwards through the rotary connecting rod and the telescopic connecting rod to be inserted into the soil, so that viscous soil can be conveniently collected, and the soil at the depth can be independently collected.

Description

Technical Field

[0001] The present invention relates to the field of coal mine exploration, and particularly to a sampling device for coal mine exploration. Background Art

[0002] Before coal mining, it is very important to conduct geological exploration. Through exploration, the distribution, scale and grade of underground minerals can be accurately understood, so as to evaluate the economic value of the mine. There are many current exploration methods, among which it is necessary to drill holes at the exploration location and then take soil samples.

[0003] In the prior art, coal mining equipment usually adopts a design that integrates drilling and sampling, and mainly consists of components such as a drill bit, a sampling tube and a motor. Among them, the drill bit is located at the bottom of the sampling tube. During operation, the motor starts to drive the sampling tube and the drill bit to rotate. The drill bit drills into the ground, and at the same time, the hollow sampling tube is inserted into the soil. Since the sampling tube is of a hollow structure, during the insertion process, the soil will naturally enter the sampling tube. However, this method has obvious deficiencies: the sampling tube will take out all the soil from the surface to that depth when it is inserted into the ground, and it is impossible to collect the soil at a specified depth separately. Therefore, it is urgent to develop a sampling device for coal mine exploration that can achieve separate collection of soils at different depths. Summary of the Invention

[0004] In order to overcome the disadvantages, the technical problem is: to provide a sampling device for coal mine exploration.

[0005] The technical solution of the present invention is: a sampling device for coal mine exploration, including a housing, a sleeve handle is arranged outside the housing, a rotating body is rotatably connected inside the housing, a sampling tube is fixedly connected to the bottom of the rotating body, a cavity is opened inside the sampling tube, a drill bit is arranged on the sampling tube, a driving component is arranged inside the housing, and the driving component is used to drive the rotating body to rotate. A shaft penetrates the housing, and the bottom of the shaft extends to the side away from the housing inside the sampling tube. A lifting shielding body is fixedly connected to the side of the shaft away from the housing. A plurality of sampling ports are opened along the circumferential direction on the side of the sampling tube close to the lifting shielding body, and the lifting shielding body is used to shield the sampling ports.

[0006] Further, the driving component includes a motor, the motor is arranged inside the housing, and a gear set is arranged between the output shaft of the motor and the rotating body.

[0007] Further, it also includes a mounting shell, the mounting shell is fixedly connected to the cavity position of the sampling tube, a plurality of telescopic connecting rods are slidably connected to the mounting shell, and sampling covers are connected to the mutually remote sides of the telescopic connecting rods.

[0008] Further, it further includes a rotating link rod, the rotating link rod is rotatably connected to one side of the telescopic link rod close to each other, the lifting cover is slidably connected with a moving frame, the moving frame is slidably connected with the lifting cover, the moving frame is slidably connected with the shaft body, a lifting block is arranged at the bottom of the moving frame, the lifting block is rotatably connected with the rotating link rod, and a return spring is connected between the side of the moving frame away from the lifting block and the sampling tube.

[0009] Further, it further includes an air pipe, a plurality of air pipes are fixedly connected to the installation shell, a piston rod is slidably connected in the air pipe, the top of the piston rod is in extrusion fit with the inner top of the lifting cover, a first spring is connected between the piston rod and the top of the air pipe, circular grooves are opened on the sides of the sampling covers close to each other, the air pipe is butted with the circular grooves, a communicating body is connected to the sampling cover, and an air bag is arranged in the sampling cover, and the air bag is communicated with the communicating body.

[0010] Further, it further includes a docking head, the docking heads are respectively arranged on the sides of the air pipes away from each other, the joints are communicated with the air pipes, the docking heads can be inserted into the circular grooves, and the communicating body is communicated with the docking heads.

[0011] Further, it further includes a guiding block, the guiding blocks are respectively fixedly connected to the sampling cover, the guiding blocks are slidably connected with symmetrically arranged contact rods, the contact rods are symmetrically arranged, a second spring is connected between the contact rods and the guiding blocks, a plug is connected between the symmetrically arranged contact rods, the plug is arranged obliquely, and a through groove is opened on the sampling cover, and the through groove is in clamping fit with the plug.

[0012] Further, it further includes a pushing frame, and the pushing frames are respectively connected to the piston rods.

[0013] Further, it further includes a rotating block, the rotating block is connected to the shaft body, the housing is slidably connected with a lifting part, the lifting part is rotatably connected to the rotating block, the housing is slidably connected with symmetrically arranged wedge-shaped frames, the wedge-shaped surfaces of the wedge-shaped frames are in extrusion fit with the lifting part, and a third spring is connected between the wedge-shaped frames and the housing.

[0014] Further, it further includes a filling plate, a plurality of filling plates are respectively slidably connected to the lifting cover, the filling plates are located at the sampling ports, inclined surfaces are arranged on the filling plates, the filling plates are in extrusion fit with the lifting cover through the inclined surfaces, and a fourth spring is connected between the filling plates and the lifting cover.

[0015] The beneficial effects are as follows: 1. In the present invention, the sampling port is first opened by the upward movement of the lifting cover, and then the lifting cover continues to move upward to push the moving frame upward. The moving frame then pushes the sampling cover to move outward and insert into the soil through the rotating link rod and the telescopic link rod, so that the viscous soil can be conveniently collected, and the soil at this depth can be collected separately.

[0016] 2. The present invention raises the shielding body and moves it downward to squeeze the piston rod, causing the piston rod to move downward and transmit the gas through the docking head and the connecting body to the inside of the airbag. The airbag will automatically expand to extrude the soil from the sampling cover, so that it is convenient to extrude the viscous soil and let it fall into the cavity.

[0017] 3. The present invention raises the shielding body and moves it downward to contact and squeeze the pushing frame, causing the contact rod to drive the plug to move downward and automatically open the through groove, so that the soil will automatically fall from below, avoiding the soil being extruded to the outer end opening of the sampling cover and sticking to the inner wall of the shielding body. Brief Description of the Drawings

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0019] Figure 2 It is a partial three-dimensional structural schematic diagram of the present invention.

[0020] Figure 3 It is a partial three-dimensional structural sectional view of the present invention.

[0021] Figure 4 It is a three-dimensional structural schematic diagram of components such as the air pipe, piston rod and spring one of the present invention.

[0022] Figure 5 It is a three-dimensional structural schematic diagram of components such as the contact rod, plug and guide block of the present invention.

[0023] Figure 6 It is a three-dimensional structural schematic diagram of components such as the rotating block, lifting part and wedge-shaped frame of the present invention.

[0024] Figure 7 It is a three-dimensional structural schematic diagram of components such as the lifting shielding body, filling plate and spring four of the present invention.

[0025] In the reference numerals: 1 - housing, 2 - sleeve handle, 3 - rotating body, 4 - sampling tube, 5 - drill bit, 6 - motor, 7 - gear set, 8 - shaft body, 9 - lifting shielding body, 10 - sampling port, 11 - telescopic connecting rod, 12 - sampling cover, 13 - mounting shell, 14 - rotating connecting rod, 15 - lifting block, 16 - moving frame, 17 - return spring, 18 - air pipe, 19 - piston rod, 20 - spring one, 21 - docking head, 22 - connecting body, 23 - airbag, 24 - pushing frame, 25 - contact rod, 26 - plug, 27 - guide block, 28 - through groove, 29 - spring two, 30 - rotating block, 31 - lifting part, 32 - wedge-shaped frame, 33 - spring three, 34 - filling plate, 35 - spring four. Detailed Embodiments

[0026] The following is a specific introduction to the present invention in combination with the drawings and specific embodiments.

[0027] Embodiment 1: A sampling device for coal mine exploration, as Figures 1-3 shown, which includes a housing 1. A sleeve handle 2 is arranged outside the housing 1. The sleeve handle 2 is composed of a hollow cylinder and two handles. The hollow cylinder is sleeved outside the housing 1, and the two handles are fixedly connected to the left and right sides of the hollow cylinder. People can hold the handles to press down this coal mine exploration sampling device. A rotating body 3 is rotatably connected to the lower part inside the housing 1. A sampling tube 4 is fixedly connected to the bottom of the rotating body 3. A cavity is opened in the lower part inside the sampling tube 4 for storing soil. The bottom of the sampling tube 4 is bolted with a drill bit 5. The drill bit 5 can be detached from the bottom of the sampling tube 4 so as to take out the soil in the cavity. A driving assembly is arranged inside the housing 1 for driving the rotating body 3 to rotate. A shaft body 8 penetrates the housing 1, and the bottom of the shaft body 8 extends to the lower part inside the sampling tube 4. A lifting shielding body 9 is fixedly connected to the bottom of the shaft body 8. Four sampling ports 10 are opened in the lower part of the sampling tube 4 along the circumferential direction. The lifting shielding body 9 is used to block the sampling ports 10. The driving assembly includes a motor 6. The motor 6 is arranged on the inner side of the housing 1. There is a gear set 7 between the output shaft of the motor 6 and the rotating body 3.

[0028] According to the description in the background technology, the existing coal mine sampling equipment drills the soil with a drill bit and inserts the sampling tube for sampling. During the insertion process, the soil will naturally enter the sampling tube. However, this method has obvious deficiencies: the sampling tube will take out all the soil from the surface to the depth it penetrates into the ground, and it is impossible to collect the soil at a specified depth separately. Therefore, this solution proposes a sampling device for coal mine exploration. The following is the specific solution:

[0029] When using this coal mine exploration sampling device, hold the sleeve handle 2, then insert the drill bit 5 into the soil, and at the same time turn on the motor 6. The output shaft of the motor 6 drives the rotating body 3 to rotate through the gear set 7, driving the sampling tube 4 and the drill bit 5 to rotate. The drill bit 5 will slowly rotate into the soil. People can sample the soil at different depths according to the exploration requirements and can adjust the sampling position by controlling the depth of the drill bit 5 penetrating into the soil. After the drill bit 5 is inserted to the required depth position, the motor 6 can be turned off, and then people can hold the shaft body 8 and move it upward. The upward movement of the shaft body 8 drives the lifting shielding body 9 to move upward. The upward movement of the lifting shielding body 9 gradually separates from the sampling ports 10, and the sampling ports 10 can be opened. In this way, the soil at this depth will enter the cavity through the sampling ports 10, so that the soil at this depth can be collected separately. Then, this coal mine exploration sampling device can be pulled out from the ground. Subsequently, people can accurately understand the distribution, scale and grade of underground minerals by studying the soil, so as to evaluate the economic value of the mine.

[0030] As described above, a sampling port 10 is provided at the lower position of the sampling tube 4. During the process of inserting the sampling tube 4 into the soil, the sampling port 10 is in a closed state. In this way, during the insertion of the sampling tube 4, the soil will not enter the cavity through the sampling port 10. After the sampling port 10 reaches the required sampling depth, the sampling port 10 can be opened by lifting the shielding body 9 upward, and the required soil sample can be extracted at this depth. Therefore, the problem that the prior art cannot separately collect the soil at a specified depth can be solved.

[0031] Embodiment 2: On the basis of Embodiment 1, as Figure 3 shown, it further includes a mounting shell 13. The mounting shell 13 serves as the support body of the support component. The mounting shell 13 is fixedly connected to the cavity position of the sampling tube 4. Four telescopic link rods 11 are all slidably connected to the mounting shell 13. Sampling covers 12 are fixedly connected to the mutually remote sides of the telescopic link rods 11. The shape of the sampling cover 12 is conical, and the inside of the sampling cover 12 is a hollow structure. When the conical sampling cover 12 is inserted into the soil towards the mutually remote sides, it can be inserted more smoothly and sampling can be carried out, and the soil will be automatically collected in the hollow position of the sampling cover 12.

[0032] As Figure 3 shown, it further includes a rotating link rod 14. The rotating link rods 14 are all rotatably connected to the mutually adjacent sides of the telescopic link rods 11. A moving frame 16 is slidably connected to the middle part of the lifting shielding body 9. The upper part of the moving frame 16 is slidably connected to the lifting shielding body 9. The upper part of the moving frame 16 is slidably connected to the shaft body 8. A lifting block 15 is welded to the bottom of the moving frame 16. The lifting block 15 is rotatably connected to the rotating link rod 14. A return spring 17 is connected between the top of the moving frame 16 and the sampling tube 4.

[0033] If the soil underground is relatively viscous and wet, then even if the sampling port 10 is opened, the viscous soil may not be able to automatically enter the interior of the cavity. Therefore, a sampling cover 12 is provided to accelerate sampling. After the lifting cover 9 is lifted upward to open the sampling port 10, when the lifting cover 9 continues to move upward and contacts the upper part of the moving frame 16, the lifting cover 9 will pull the moving frame 16 upward, and the return spring 17 is compressed. The upward movement of the moving frame 16 drives the lifting block 15 upward. The upward movement of the lifting block 15 will push the four telescopic connecting rods 11 to move away from each other through the rotating connecting rod 14. The movement of the telescopic connecting rod 11 will drive the four sampling covers 12 to move away from each other. The sampling cover 12 moves out of the cavity, and when the sampling cover 12 moves outward, it will insert into the soil, so that the soil will be received inside the sampling cover 12. Subsequently, during the downward movement of the lifting cover 9, the lifting cover 9 slowly releases the moving frame 16, and under the action of the return spring 17, the return spring 17 drives the moving frame 16 to move downward to reset. The moving frame 16 drives the lifting block 15 to move downward to reset. The downward movement of the lifting block 15 drives the telescopic connecting rod 11 to retract through the rotating connecting rod 14. The telescopic connecting rod 11 drives the sampling cover 12 to move inward to reset, so that the sampling cover 12 can receive the soil into the interior of the cavity. After the sampling cover 12 is retracted into the interior of the cavity, the lifting cover 9 continues to move downward to block the sampling port 10 again.

[0034] As Figures 3-4 shown, it further includes an air pipe 18. The air pipes 18 are fixedly connected to the front, rear, left, and right sides of the upper part of the mounting shell 13. A piston rod 19 is slidably connected to each of the air pipes 18. The top of the piston rod 19 is in pressing fit with the inner top of the lifting cover 9. A first spring 20 is connected between the upper part of the piston rod 19 and the top of the air pipe 18. Circular grooves are respectively opened in the upper parts of the mutually adjacent sides of the sampling covers 12. The air pipes 18 are docked with the circular grooves. A communicating body 22 is connected to the upper part of each sampling cover 12. An air bag 23 is provided in the upper part of each sampling cover 12. The air bag 23 is communicated with the communicating body 22.

[0035] As Figure 4 shown, it further includes a docking head 21. The docking heads 21 are respectively arranged on the mutually remote sides of the air pipes 18. The connectors are communicated with the air pipes 18. The docking head 21 can be inserted into the circular groove. The communicating body 22 is communicated with the docking head 21.

[0036] After the sampling hood 12 collects the viscous soil, it is very difficult to take out the viscous soil from the inside of the sampling hood 12. Therefore, the following solution is adopted: when the lifting shield 9 moves upward, the lifting shield 9 will gradually separate from the piston rod 19. At this time, the first spring 20 in the compressed state drives the piston rod 19 to move upward, and the airbag 23 in the inflated state will gradually contract. Then, during the process of the sampling hood 12 moving outward and extending out of the cavity, the sampling hood 12 drives the connecting body 22 and the airbag 23 to also move outward, and the connecting body 22 will separate from the trachea 18. After that, when the sampling hood 12 moves and resets to the side where they approach each other, it will drive the connecting body 22 and the airbag 23 to also move and reset to the side where they approach each other, and the connecting body 22 is automatically docked with the docking head 21. At this time, the viscous soil is located inside the sampling hood 12. When the lifting shield 9 moves downward and contacts the piston rod 19, it will push the piston rod 19 downward, and the first spring 20 is compressed. The piston rod 19 moving downward transmits the gas through the docking head 21 and the connecting body 22 into the airbag 23. The airbag 23 will automatically expand and extrude the soil from the sampling hood 12. In this way, it is convenient to extrude the viscous soil and let it fall into the cavity, so that it is convenient for people to take out the soil.

[0037] As Figure 3 and Figure 5 shown, it further includes guide blocks 27. The guide blocks 27 are respectively fixedly connected to the sampling hood 12. Two contact rods 25 are slidably connected to the guide blocks 27. The contact rods 25 are symmetrically arranged. A second spring 29 is connected between the upper parts of the contact rods 25 and the guide blocks 27. A plug 26 is connected between the lower parts of the symmetrically arranged contact rods 25. The upper part of the plug 26 is set to be inclined. Through grooves 28 are opened in the lower part of the sampling hood 12. The through grooves 28 are in snap-fit with the plug 26.

[0038] As Figure 3 shown, it further includes a push frame 24. The push frames 24 are respectively fixedly connected to the upper parts of the piston rods 19.

[0039] As mentioned above, after the airbag 23 expands, the soil will be extruded from the outer end opening of the sampling cover 12. Since the opening at the outer end of the sampling cover 12 is just close to the lifting shield 9, the soil will directly adhere to the inner wall of the lifting shield 9, making it difficult for the viscous soil to fall onto the cavity. Therefore, the following solution is set to solve the above problem: When the piston rod 19 moves upward, it will drive the pushing frame 24 to move upward. After the pushing frame 24 moves upward and separates from the contact rod 25, the spring two 29 in the stretched state drives the contact rod 25 and the plug 26 to move upward and reset. The plug 26 blocks the through groove 28. In this way, when the sampling cover 12 moves outward, the collection of soil will not be affected by the opening of the through groove 28. After that, when the sampling cover 12 finishes sampling and retracts, and the lifting shield 9 moves downward and contacts the pushing frame 24, the pushing frame 24 will drive the contact rod 25 to move downward. The downward movement of the contact rod 25 drives the plug 26 to move downward to automatically open the through groove 28. In this way, when the airbag 23 expands, the soil will directly fall through the through groove 28, and the soil will fall onto the plug 26. Since the upper part of the plug 26 is set to be inclined, the soil will fall into the cavity through the inclined surface.

[0040] As Figure 6 shown, it further includes a rotating block 30. The rotating block 30 is fixedly connected to the upper part of the shaft body 8. The upper part of the housing 1 is slidably connected with a lifting part 31. The upper part of the lifting part 31 is rotatably connected to the rotating block 30. The left and right sides of the upper part of the housing 1 are both slidably connected with wedge-shaped frames 32. The wedge-shaped surfaces of the wedge-shaped frames 32 are in extrusion fit with the lifting part 31. Spring three 33 is connected between the wedge-shaped frames 32 and the housing 1.

[0041] When sampling, people need to manually pull the shaft body 8 upward. If people keep manually pulling the shaft body 8, it will increase the labor force. Therefore, a locking function is set. When the shaft body 8 moves upward, it drives the rotating block 30 and the lifting part 31 to move upward. When the upper part of the lifting part 31 contacts the wedge-shaped surface of the wedge-shaped frame 32, it will push the wedge-shaped frame 32 to move outward, and the spring three 33 is compressed. When the upper part of the lifting part 31 separates from the wedge-shaped surface of the wedge-shaped frame 32, under the action of the spring three 33, it drives the wedge-shaped frame 32 to move inward and reset. In this way, the wedge-shaped frame 32 will restrict the lifting part 31, and then restrict the shaft body 8 through the rotating block 30. In this way, there is no need for people to manually pull the shaft body 8 upward all the time, reducing the labor force. It should be noted that: because the sampling tube 4 will rotate, the shaft body 8 will also rotate accordingly. Therefore, the rotating block 30 is fixed on the shaft body 8, and the rotating block 30 rotates inside the lifting part 31, which can prevent the rotation of the rotating block 30 from affecting the operation of the lifting part 31.

[0042] As Figure 7As shown, it further includes a filling plate 34. The four filling plates 34 are respectively connected to the lifting cover 9 in a sliding manner, and the filling plate 34 is located on the sampling port 10. An inclined surface is provided above the filling plate 34, and the filling plate 34 is in extrusion fit with the lifting cover 9 through the inclined surface. Two springs four 35 are connected between the filling plate 34 and the lifting cover 9.

[0043] Since there is some thickness at the sampling port 10 opened on the sampling tube 4, during the process of inserting the sampling tube 4 into the soil, soils at different depths may remain at the position of the sampling port 10. After the sampling port 10 is opened, the soils at other depths remaining at the position of the sampling port 10 will directly enter the cavity, which will affect the accuracy of soil sampling and subsequent data analysis. Therefore, the filling plate 34 is provided. Initially, the filling plate 34 blocks the sampling port 10. When the sampling tube 4 is inserted into the soil, the soils at other depths will be blocked by the filling plate 34 and will not remain at the position of the sampling port 10. Then, when the lifting cover 9 moves upward, it will drive the filling plate 34 to move upward together. At this time, the inclined surface of the filling plate 34 will be in extrusion fit with the lifting cover 9, and the filling plate 34 will automatically move towards the side close to each other and separate from the sampling port 10. At this time, the spring four 35 is stretched. When the lifting cover 9 moves downward and resets, it will drive the filling plate 34 to reset. After the filling plate 34 coincides with the sampling port 10, under the action of the spring four 35, it will drive the filling plate 34 to reset.

[0044] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sampling device for coal mine exploration, comprising a housing (1), a sleeve handle (2) is arranged outside the housing (1), a rotating body (3) is rotatably connected inside the housing (1), a sampling tube (4) is fixedly connected to the bottom of the rotating body (3), a cavity is formed inside the sampling tube (4), and a drill bit (5) is arranged on the sampling tube (4), characterized in that, Inside the housing (1), there is a driving component for driving the rotating body (3) to rotate. The shaft body (8) passes through the housing (1), and the bottom of the shaft body (8) extends to the side of the sampling tube (4) far from the housing (1). A lifting shielding body (9) is fixedly connected to the side of the shaft body (8) far from the housing (1). A plurality of sampling ports (10) are provided on the side of the sampling tube (4) close to the lifting shielding body (9) along the circumferential direction, and the lifting shielding body (9) is used to block the sampling ports (10).

2. The sampling device for coal mine exploration according to claim 1, characterized in that, The driving component includes a motor (6), and the motor (6) is arranged inside the housing (1). There is a gear set (7) between the output shaft of the motor (6) and the rotating body (3).

3. The sampling device for coal mine exploration according to claim 2, characterized in that, It further includes a mounting shell (13), and the mounting shell (13) is fixedly connected to the cavity position of the sampling tube (4). A plurality of telescopic connecting rods (11) are slidably connected to the mounting shell (13), and sampling covers (12) are connected to the mutually remote sides of the telescopic connecting rods (11).

4. The sampling device for coal mine survey as described in claim 3, characterized in that, It further includes a rotating connecting rod (14), and the rotating connecting rod (14) is rotatably connected to the mutually close sides of the telescopic connecting rods (11). A moving frame (16) is slidably connected to the lifting shielding body (9), and the moving frame (16) is slidably connected to the lifting shielding body (9) and the shaft body (8). A lifting block (15) is arranged at the bottom of the moving frame (16), and the lifting block (15) is rotatably connected to the rotating connecting rod (14). A return spring (17) is connected between the side of the moving frame (16) far from the lifting block (15) and the sampling tube (4).

5. The sampling device for coal mine exploration according to claim 4, characterized in that, It further includes air pipes (18), and a plurality of air pipes (18) are fixedly connected to the mounting shell (13). A piston rod (19) is slidably connected inside the air pipes (18), and the top of the piston rod (19) is in pressing fit with the inner top of the lifting shielding body (9). A first spring (20) is connected between the piston rod (19) and the top of the air pipes (18). Circular grooves are formed on the mutually close sides of the sampling covers (12), and the air pipes (18) are docked with the circular grooves. A communicating body (22) is connected to the sampling covers (12), and an airbag (23) is arranged inside the sampling covers (12), and the airbag (23) is communicated with the communicating body (22).

6. The sampling device for coal mine exploration according to claim 5, characterized in that, It further includes docking heads (21), and the docking heads (21) are respectively arranged on the mutually remote sides of the air pipes (18). The joints are communicated with the air pipes (18), and the docking heads (21) can be inserted into the circular grooves, and the communicating body (22) is communicated with the docking heads (21).

7. The sampling device for coal mine survey according to claim 6, characterized in that, It further includes guide blocks (27), and the guide blocks (27) are respectively fixedly connected to the sampling covers (12). Symmetrically arranged contact rods (25) are slidably connected to the guide blocks (27). The contact rods (25) are symmetrically arranged, and a second spring (29) is connected between the contact rods (25) and the guide blocks (27). A plug (26) is connected between the symmetrically arranged contact rods (25), and the plug (26) is arranged obliquely. A through groove (28) is formed on the sampling covers (12), and the through groove (28) is in snap fit with the plug (26).

8. A sampling device for coal mine exploration according to claim 7, characterized in that, It further includes a pushing frame (24), and the pushing frames (24) are respectively connected to the piston rods (19).

9. The sampling device for coal mine exploration according to claim 8, wherein, It further includes a rotating block (30). The rotating block (30) is connected to the shaft body (8). The housing (1) is slidably connected with a lifting part (31). The lifting part (31) is rotatably connected to the rotating block (30). The housing (1) is slidably connected with symmetrically arranged wedge-shaped frames (32). The wedge-shaped surfaces of the wedge-shaped frames (32) are in extrusion fit with the lifting part (31). A third spring (33) is connected between the wedge-shaped frames (32) and the housing (1).

10. The sampling device for coal mine exploration according to claim 9, characterized in that, It further includes filling plates (34). A plurality of filling plates (34) are respectively slidably connected to the lifting cover (9). The filling plates (34) are located at the sampling ports (10). The filling plates (34) are provided with inclined surfaces. The filling plates (34) are in extrusion fit with the lifting cover (9) through the inclined surfaces. A fourth spring (35) is connected between the filling plates (34) and the lifting cover (9).

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