A geological sampling and testing device for coal mine exploration

Abstract

This invention discloses a geological sampling and testing device for coal mine exploration, relating to the field of coal mine geological sampling technology. The invention includes a frame and a drive assembly mounted on the frame. The drive assembly includes a sampling tube disposed on one side of the frame, with a compression assembly sleeved around the periphery of the sampling tube. The compression assembly includes a kit, with an arc-shaped groove at the top and a strip-shaped groove on the inner sidewall of the kit. The arc-shaped groove and the strip-shaped groove are interconnected to form an L-shaped through hole. A scraper is welded to the inner side of the top of the kit. Each adjacent kit is connected by an elastic rope, and the bottom of the kit is slidably disposed inside a wedge-shaped block via two movable blocks. This invention, by continuously moving the movable bearing back and forth at both ends of the lead screw, can complete multiple extractions of the sampling tube, ultimately removing it. This simple and quick structure reduces the difficulty of manually extracting the sampling tube.

Description

Technical Field

[0001] This invention belongs to the field of coal mine geological sampling technology, and in particular relates to a geological sampling and testing device for coal mine exploration. Background Technology

[0002] Coal mine geological exploration utilizes the theories, research methods, and technical means of coal geology to conduct exploration and economic evaluation of coal deposits. It includes four stages: coal prospecting, general survey, detailed survey, and precision survey. Its basic task is to ascertain the quantity and quality of coal resources, as well as the geological conditions and mining technical conditions, providing reliable resource information for the planning and layout of the coal industry and a geological basis for coal mine construction. During coal mine exploration, it is necessary to sample the coal mine geology at a certain depth and conduct relevant tests on the obtained samples to determine the mining value of the coal mine.

[0003] Currently, the geological sampling process in coal mine exploration typically involves using sampling equipment to sample the coal seam at the exploration site. The traditional method is to manually hold a simple drilling device and press down, or to drill down into the coal seam by rotating the drill bit, and then pull out the sampling tube to extract the coal seam sample inside the tube to complete the entire sampling process. However, this sampling method requires the cooperation of multiple workers, is time-consuming and labor-intensive, and cannot meet the needs of use. Furthermore, the sampling equipment generally still requires manual hand-held drilling to extract samples. Drilling down uses pressure or rotational force, but pulling out the sampling tube located underground is quite troublesome and cannot be done quickly and effectively, presenting a certain degree of operational difficulty.

[0004] Existing geological sampling and testing devices for coal mine exploration cannot meet the requirements for rapid sampling when taking samples from coal seams. Furthermore, the sampling tubes are located in the underground coal seam after drilling, making them inconvenient to pull out and causing significant operational difficulties. Therefore, this invention proposes a geological sampling and testing device for coal mine exploration. Summary of the Invention

[0005] The purpose of this invention is to provide a geological sampling and testing device for coal mine exploration, which solves the problems of existing geological sampling and testing devices for coal mine exploration failing to meet the requirements for rapid sampling when sampling coal seams, and the sampling tubes being located in underground coal seams after drilling being inconvenient to pull out, resulting in high operational difficulty.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a geological sampling and testing device for coal mine exploration, comprising a frame and a drive assembly mounted on the frame. The drive assembly includes a sampling tube disposed on one side of the frame, and a compression assembly is sleeved on the periphery of the sampling tube. The frame serves as the main frame of the sampling and testing device and is used to install the various components. The sampling tube is driven by a drilling motor to drill into the coal seam. The sampling tube has a hollow internal structure for holding the sampled coal seam soil. The extrusion assembly includes a kit. The kit has an arc-shaped groove at its top and a strip-shaped groove on its inner sidewall. The arc-shaped groove and the strip-shaped groove are interconnected to form an L-shaped through hole. A scraper is welded to the inner side of the top of the kit. The bottom of the kit is slidably positioned inside a wedge block via two movable blocks. Four sets of wedge blocks and the kit above them are arranged around the same center on the circumference of the sampling tube. Each adjacent kit is connected by an elastic rope. An extrusion ring is located below each of the four wedge blocks. The inner surface of the squeezing ring is inclined, fitting against the outer inclined surface of the wedge block. The bottom of the squeezing ring is welded to the top of the movable ring. There are four components, each wrapped around the outer wall of the sampling tube, with a gap between them to allow coal seam soil particles adhering to the outer wall to pass through. When the sampling tube needs to be pulled upwards, the squeezing ring pushes the wedge block upwards, and the four wedge blocks are continuously squeezed closer to the outer wall. At this time, the components drive the top scraper to move upwards a short distance along the outer wall, and as the scraper moves closer to the outer wall, it can scrape away the outer wall material. Large coal seam soil particles are screened out, while smaller particles are fed through an "L"-shaped trough between the wedge and the outer pipe wall. This increases the friction between the outer pipe wall and the wedge, making the extraction process more stable and preventing slippage due to low friction. The reason for adding coal seam soil particles from the outer pipe wall between the outer pipe wall and the wedge is to ensure that a small section of soil particles between the outer pipe wall and the wedge does not lack sufficient friction to generate significant friction. Therefore, a longer section of the outer pipe wall surface is scraped away using a scraper. Coal seam soil particles aggregate together, increasing the friction between the outer pipe wall and the wedge block. The outer surface of the wedge block is inclined, which matches the inclined surface of the inner side of the extrusion ring. Therefore, when the extrusion ring moves upward, it squeezes the wedge block inward. The reason why the wedge block and its top assembly do not continue to move upward when the extrusion ring pushes it upward is that the assembly applies a downward gravity to the wedge block under the action of gravity, making it easy for the wedge block to be squeezed inward. At the same time, when the scraper scrapes the coal seam soil outside the outer pipe wall, it will encounter resistance, so the wedge block is easily squeezed and clamps the outer pipe wall. A set of extraction components is provided on opposite sides of the bottom of the extrusion assembly. Each extraction component includes a connecting arm, one end of which is located at the bottom side of the extrusion ring, and the other end of which is located on a movable bearing. The movable bearing is slidably connected to the circumferential side of the lead screw. The lead screw is installed inside the frame. The connecting arm connects the movable bearing and the movable ring. When the movable bearing moves to the center position of the lead screw, the connecting arm pushes the movable ring to the highest point. When the movable bearing is at both ends of the lead screw, the connecting arm drives the movable ring to the lowest point, i.e., the initial position. The movable bearing moves from one end of the lead screw to the other end, which is the activity state of extracting the sampling tube once. In the initial state, the movable bearing is located at one end of the lead screw. When the movable bearing moves to the midpoint of the lead screw, the connecting arm pushes the movable ring to the highest point. At this time, the sampling tube is pulled upward a certain distance. At this time, the extrusion assembly is in the state of extruding the sampling tube. This distance is the movement distance of the movable ring. When the movable bearing continues to move along the lead screw to the other end, the movable ring continuously descends, but does not drive the sampling tube to descend. At this time, the extrusion assembly is in the relaxed state.

[0007] Preferably, wheels are provided at both ends of one side of the frame, and a mounting column is installed on the top of the frame. The mounting column and the frame are reinforced and connected by a support frame, and the three form a right triangle. The wheels are used to drive the frame to move, the mounting column is used to install the drive component, and the support frame is used to reinforce the mounting column and the frame.

[0008] Preferably, the drive assembly includes a rack, which is welded to one side of a mounting post. A groove is provided on the side of the mounting post adjacent to the rack. A slider is slidably mounted inside the groove. One end of the slider is fixedly connected to a mounting frame. A mounting hole is provided inside the mounting frame, and a lifting motor is installed inside the mounting hole. The output end of the lifting motor is welded to the center point of one side of a gear. The gear is meshed with the rack. The rack allows the gear to move up and down on its surface. The lifting motor starts the gear to rotate. The mounting frame is used to fix the lifting motor in place. The slider slides up and down inside the groove.

[0009] Preferably, a fixing seat is welded to the other side of the mounting frame, a drilling motor is installed at the top of the fixing seat, the bottom output end of the drilling motor passes through the fixing seat and is fixedly connected to the top of the disassembly component, and the bottom of the disassembly component is installed and connected to the top of the sampling tube; a hollow drill bit is installed at the bottom of the sampling tube, the fixing seat is used to fix the drilling motor, the drilling motor is used to drive the sampling tube to rotate and drill down into the coal seam, the disassembly component can be movably disassembled and assembled with the sampling tube, and the hollow drill bit is used to drill downwards without affecting the entry of coal seam soil into the sampling tube.

[0010] Preferably, the frame extends two fixed arms from the side adjacent to the mounting column. The two fixed arms are located on both sides of the mounting column and are symmetrically arranged. Each fixed arm has a rectangular groove at its top. The inner walls of the opposite sides of the rectangular groove are movably connected to the two ends of the lead screw. One end of the lead screw passes through one inner wall of the rectangular groove to its outside and is fixedly connected to the output end of the sliding motor. The sliding motor is installed at one end of the fixed arm and is used to drive the lead screw to rotate.

[0011] Preferably, a rotating seat is welded to the top of the movable bearing, the top of the rotating seat is fixedly connected to the first movable component, the first movable component is welded to one end of the connecting arm, the other end of the connecting arm is welded to the second movable component, and the second movable component is fixedly connected to the bottom of the side of the movable ring; two sets of the extraction components are arranged at both ends of the sampling tube and are symmetrically arranged about the central axis of the sampling tube; the two connecting arms are always symmetrically arranged about the central axis of the sampling tube during operation.

[0012] Preferably, the wedge-shaped block has two grooves on its top, and a spring is fixedly connected inside each of the two grooves. One end of the spring is connected to a movable block at the bottom of the kit, and the movable block is slidably connected inside the groove.

[0013] Preferably, a screen is welded to the opening of the arc-shaped groove at the top of the kit. The screen is used to screen the coal seam soil scraped off the outer wall of the sampling tube by the scraper, and to screen the smaller soil particles into the "L"-shaped groove until they are introduced into the gap between the wedge block and the outer wall of the sampling tube, thereby increasing the friction between the wedge block and the outer wall of the sampling tube.

[0014] The present invention has the following beneficial effects: 1. This invention, by setting up a pulling component, activates the sampling tube when it needs to be pulled out of the coal seam soil after drilling is completed. In the initial state, the movable bearing is located at one end of the lead screw. The movable bearing continuously moves towards the midpoint of the lead screw, thereby pushing the upper end of the connecting arm to rise continuously. This drives the squeezing component to rise continuously until the movable bearing reaches the midpoint of the lead screw, and the squeezing component reaches its highest point. During this process, the squeezing component clamps the sampling tube in a very short time and distance. As the squeezing component rises, it drives the sampling tube to rise, completing one extraction process. After one extraction, the movable bearing continues to move along the lead screw. At this time, the squeezing component is no longer subjected to upward squeezing force, thus releasing the sampling tube. The squeezing component moves downward until the movable bearing moves to the other end of the lead screw, at which point the squeezing component reaches its initial height position. By continuously moving the movable bearing back and forth between the two ends of the lead screw, multiple extractions of the sampling tube can be completed, ultimately pulling out the sampling tube. This structure is simple and quickly pulls out the sampling tube, reducing the difficulty of manual extraction.

[0015] 2. This invention, through the setting of a squeezing component, when the squeezing component pushes the squeezing ring upward, the inner inclined surface of the squeezing ring contacts the outer inclined surface of the wedge block, squeezing the wedge block inward. Since the wedge block and the assembly move back and forth through the movable block and groove, the squeezing process is relatively easy. The squeezing ring pushes the wedge block upward, and the four wedge blocks are continuously squeezed closer to the outer pipe wall. At this time, the assembly drives the top scraper to move upward a short distance along the outer pipe wall. Because the scraper moves closer to the outer pipe wall, it can scrape off coal seam soil particles from the outer pipe wall surface, removing large coal seam soil particles and feeding small coal seam soil particles through the "L"-shaped groove between the wedge block and the outer pipe wall, increasing the friction between the outer pipe wall and the wedge block. This makes the extraction process more stable and prevents slippage due to low friction. The reason for removing coal seam soil particles from the outer pipe wall is... The addition of soil particles between the outer pipe wall and the wedge block is to prevent a small section of soil particles between the outer pipe wall and the wedge block from being insufficient to generate sufficient friction. Therefore, a scraper is used to scrape a longer section of the outer pipe wall surface to collect the coal seam soil particles, increasing the friction between the outer pipe wall and the wedge block. The outer surface of the wedge block is inclined, which matches the inclined surface of the inner side of the extrusion ring. Therefore, when the extrusion ring moves upward, it squeezes the wedge block inward. The reason why the wedge block and its top assembly do not continue to move upward when the extrusion ring pushes upward is that the assembly applies a downward force to the wedge block under the action of gravity, making it easy for the wedge block to be squeezed inward. At the same time, when the scraper scrapes the coal seam soil outside the outer pipe wall, it encounters resistance. Therefore, the wedge block is easily squeezed and clamps the outer pipe wall. Thus, this invention can clamp the sampling tube with a large friction force and complete the extraction of the sampling tube. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the overall structure of the geological sampling and testing device for coal mine exploration provided by the present invention; Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle; Figure 3 A front view schematic diagram of the geological sampling and testing device for coal mine exploration provided by the present invention; Figure 4 A top view schematic diagram of the geological sampling and testing device for coal mine exploration provided by the present invention; Figure 5A schematic diagram of the extraction component structure of the geological sampling and testing device for coal mine exploration provided by the present invention; Figure 6 A schematic diagram of the cross-sectional structure of the extraction component of the geological sampling and testing device for coal mine exploration provided by the present invention; Figure 7 A schematic diagram of the extrusion assembly structure of the geological sampling and testing device for coal mine exploration provided by the present invention.

[0018] The attached diagram lists the components represented by each number as follows: 1. Frame; 2. Wheels; 3. Support frame; 4. Mounting column; 5. Lifting motor; 6. Slider; 7. Mounting frame; 8. Gear; 9. Rack; 10. Drilling motor; 11. Fixed seat; 12. Assembly / disassembly parts; 13. Sampling tube; 14. Hollow drill bit; 15. Lead screw; 16. Movable bearing; 17. Sliding motor; 18. Rotary seat; 19. First moving part; 20. Connecting arm; 21. Second moving part; 22. Movable ring; 23. Compression ring; 24. Wedge block; 25. Spring; 26. Kit; 27. Scraper; 28. Screen. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0020] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] See Figure 1-7The present invention is a geological sampling and testing device for coal mine exploration, including a frame 1 and a drive assembly installed on the frame. The drive assembly includes a sampling tube 13 located on one side of the frame 1. A squeezing assembly is sleeved on the periphery of the sampling tube 13. The frame 1 serves as the main frame of the sampling and testing device and plays the role of installing various components. The sampling tube 13 is driven by a drilling motor 10 to drill into the coal seam. The sampling tube 13 has a hollow structure inside and is used to hold the sampled coal seam soil. The extrusion assembly includes a kit 26. The top of the kit 26 has an arc-shaped groove, and the inner wall of the kit 26 has a strip-shaped groove. The arc-shaped groove and the strip-shaped groove are interconnected to form an L-shaped through hole. A scraper 27 is welded to the inner side of the top of the kit 26. The bottom of the kit 26 is slidably mounted inside a wedge block 24 via two movable blocks. Four sets of wedge blocks 24 and the kits above them are arranged around the same center on the side of the sampling tube 13. Each adjacent kit 26 is connected by an elastic rope 29. An extrusion ring 23 is located below the four wedge blocks 24, and the inner surface of the extrusion ring 23 is inclined. The surface of the device is in contact with the outer inclined surface of the wedge block 24; the bottom of the compression ring 23 is welded to the top of the movable ring 22; there are four components 26, all wrapped around the outer wall of the sampling tube 13, with a gap between them to allow coal seam soil particles adhering to the outer wall of the sampling tube 13 to pass through. When the sampling tube 13 needs to be pulled upwards, the compression ring 23 will push the wedge block 24 upwards, and the four wedge blocks 24 will be continuously squeezed closer to the outer wall. At this time, the component 26 drives the scraper 27 at the top to move upwards a short distance along the outer wall, and because the scraper 27 moves closer to the outer wall, it can scrape the outer wall. Large coal seam soil particles are screened out, while smaller particles are fed into the space between the wedge block 24 and the outer pipe wall via an "L"-shaped trough. This increases the friction between the outer pipe wall and the wedge block 24, making the extraction process more stable and preventing slippage due to low friction. The reason for adding coal seam soil particles from the outer pipe wall between the outer pipe wall and the wedge block 24 is to avoid insufficient soil particles in a small section between the outer pipe wall and the wedge block 24, which would not generate sufficient friction. Therefore, a longer section of coal seam soil particles on the outer pipe wall surface is scraped off using the scraper 27, thus aggregating the particles. The materials are gathered together, increasing the friction between the outer pipe wall and the wedge block 24. The outer surface of the wedge block 24 is inclined, which matches the inclined surface of the inner side of the extrusion ring 23. Therefore, when the extrusion ring 23 moves upward, it squeezes the wedge block 24 inward. The reason why the extrusion ring 23 pushes the wedge block 24 and its top assembly 26 upward does not continue to move upward is that the assembly 26 applies a downward gravity to the wedge block 24 under the action of gravity, which makes it easy for the wedge block 24 to be squeezed inward. At the same time, when the scraper 27 scrapes the coal seam soil outside the outer pipe wall, it will encounter resistance. Therefore, the wedge block 24 is easily squeezed and clamped to the outer pipe wall. A set of extraction components is provided on opposite sides of the bottom of the extrusion assembly. Each extraction component includes a connecting arm 20, one end of which is located at the bottom side of the extrusion ring 23, and the other end is located on a movable bearing 16. The movable bearing 16 is slidably connected to the circumference of the lead screw 15, which is installed inside the frame 1. The connecting arm 20 connects the movable bearing 16 and the movable ring 22. When the movable bearing 16 moves to the center position of the lead screw 15, the connecting arm 20 pushes the movable ring 22 to its highest point. When the movable bearing 16 is located at both ends of the lead screw 15, the connecting arm 20 drives the movable ring 22 to its lowest point, i.e., the initial position. 16 moves from one end of the lead screw 15 to the other end, which is the active state of pulling out the sampling tube 13 once. In the initial state, the movable bearing 16 is located at one end of the lead screw 15. When the movable bearing 16 moves to the midpoint of the lead screw 15, the connecting arm pushes the movable ring 22 to the highest point. At this time, the sampling tube 13 is pulled upward a certain distance. At this time, the extrusion assembly is in the state of extruding the sampling tube 13. This distance is the movement distance of the movable ring 22. When the movable bearing 16 continues to move along the lead screw 15 to the other end, the movable ring 22 continuously descends during this process, but does not drive the sampling tube 13 to descend. At this time, the extrusion assembly is in the relaxed state.

[0023] Among them, wheels 2 are respectively installed at both ends of one side of the frame 1, and a mounting column 4 is installed on the top of the frame 1. The mounting column 4 and the frame 1 are reinforced and connected by a support frame 3. The three form a right triangle. The wheels 2 are used to drive the frame 1 to move, the mounting column 4 is used to install the drive component, and the support frame 3 is used to reinforce the mounting column 4 and the frame 1.

[0024] The drive assembly includes a rack 9, which is welded to one side of a mounting post 4. A groove is provided on the side of the mounting post 4 adjacent to the rack 9. A slider 6 is slidably mounted inside the groove. One end of the slider 6 is fixedly connected to a mounting frame 7. A mounting hole is provided inside the mounting frame 7. A lifting motor 5 is installed inside the mounting hole. The output end of the lifting motor 5 is welded to the center point of one side of a gear 8. The gear 8 is meshed with the rack 9. The rack 9 is used to allow the gear 8 to move up and down on its surface. The lifting motor 5 is used to start the gear 8 to rotate. The mounting frame 7 is used to fix the lifting motor 5 in place. The slider 6 slides up and down inside the groove.

[0025] The mounting frame 7 has a fixed base 11 welded to its other side. A drilling motor 10 is installed at the top of the fixed base 11. The bottom output end of the drilling motor 10 passes through the fixed base 11 and is fixedly connected to the top of the disassembly and assembly part 12. The bottom of the disassembly and assembly part 12 is installed and connected to the top of the sampling tube 13. A hollow drill bit 14 is installed at the bottom of the sampling tube 13. The fixed base 11 is used to fix the drilling motor 10. The drilling motor 10 is used to drive the sampling tube 13 to rotate and drill down into the coal seam. The disassembly and assembly part 12 can be movably disassembled and assembled with the sampling tube 13. The hollow drill bit 14 is used to drill downwards, but it does not affect the entry of coal seam soil into the sampling tube 13.

[0026] Two fixed arms extend from the side of the frame 1 near the mounting column 4. The two fixed arms are located on both sides of the mounting column and are symmetrically arranged. Each fixed arm has a rectangular groove at the top. The inner walls of the rectangular groove on opposite sides are movably connected to the two ends of the lead screw 15. One end of the lead screw 15 passes through one inner wall of the rectangular groove to its outside and is fixedly connected to the output end of the sliding motor 17. The sliding motor 17 is installed at one end of the fixed arm and is used to drive the lead screw 15 to rotate.

[0027] Among them, the top of the movable bearing 16 is welded with a rotating seat 18, the top of the rotating seat 18 is fixedly connected to the first movable part 19, the first movable part 19 is welded to one end of the connecting arm 20, the other end of the connecting arm 20 is welded to the second movable part 21, and the second movable part 21 is fixedly connected to the bottom side of the movable ring 22; two sets of extraction components are set at both ends of the sampling tube 13 and are symmetrically arranged about the central axis of the sampling tube 13; the two connecting arms 20 are always symmetrically arranged about the central axis of the sampling tube 13 during operation.

[0028] The wedge block 24 has two grooves on its top, and a spring 25 is fixedly connected inside each groove. One end of the spring 25 is connected to the movable block at the bottom of the kit 26, and the movable block is slidably connected inside the groove.

[0029] Among them, a screen 28 is welded at the opening of the arc-shaped groove on the top of the kit 26. The screen 28 is used to screen the coal seam soil scraped off the outer wall of the sampling tube 13 by the scraper 27, and to screen the smaller soil particles into the "L"-shaped groove until they are introduced into the gap between the wedge block 24 and the outer wall of the sampling tube 13, thereby increasing the friction between the wedge block 24 and the outer wall of the sampling tube 13.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A geological sampling and testing device for coal mine exploration, comprising a frame (1) and a drive assembly installed on the frame (1), characterized in that: The driving assembly includes a sampling tube (13) disposed on one side of the frame (1), and a compression assembly is sleeved on the periphery of the sampling tube (13); the compression assembly includes a kit (26), the top of the kit (26) is provided with an arc-shaped groove, and the inner sidewall of the kit (26) is provided with a strip-shaped groove, the arc-shaped groove and the strip-shaped groove are interconnected to form a through hole with an "L" shaped cross-section, a scraper (27) is welded to the inner side of the top of the kit (26), each adjacent kit (26) is connected by an elastic rope (29), the bottom end of the kit (26) is slidably disposed inside the wedge block (24) by two movable blocks, and the four sets of wedge blocks (24) and the kits above them surround the kit. The same center is set on the circumferential side of the sampling tube (13); a squeezing ring (23) is set below the four wedge blocks (24), the inner side of the squeezing ring (23) is a slope, which fits against the outer slope of the wedge block (24); the bottom of the squeezing ring (23) is welded to the top of the movable ring (22); a set of extraction components are respectively set on opposite sides of the bottom of the squeezing assembly; the extraction component includes a connecting arm (20), one end of the connecting arm (20) is set on the bottom side of the squeezing ring (23), and the other end of the connecting arm (20) is set on the movable bearing (16), the movable bearing (16) is slidably connected to the circumferential side of the lead screw (15), and the lead screw (15) is installed inside the frame (1); The frame (1) has wheels (2) at both ends on one side, and a mounting column (4) is installed on the top of the frame (1). The mounting column (4) and the frame (1) are reinforced and connected by a support frame (3). The three form a right triangle. The drive assembly includes a rack (9), which is welded to one side of a mounting post (4). A groove is provided on the side of the mounting post (4) near where the rack (9) is installed. A slider (6) is slidably arranged inside the groove. One end of the slider (6) is fixedly connected to a mounting frame (7). A mounting hole is provided inside the mounting frame (7). A lifting motor (5) is installed inside the mounting hole. The output end of the lifting motor (5) is welded to the center point of one side of a gear (8). The gear (8) is meshed with the rack (9). A fixing seat (11) is welded to the other side of the mounting frame (7). A drilling motor (10) is installed at the top of the fixing seat (11). The bottom output end of the drilling motor (10) passes through the fixing seat (11) and is fixedly connected to the top of the disassembly and assembly part (12). The bottom of the disassembly and assembly part (12) is installed and connected to the top of the sampling tube (13). A hollow drill bit (14) is installed at the bottom of the sampling tube (13). Two fixed arms extend from the side of the frame (1) near the mounting column (4). The two fixed arms are located on both sides of the mounting column and are symmetrically arranged. A rectangular groove is opened at the top of each fixed arm. The inner walls of the rectangular groove on opposite sides are movably connected to the two ends of the lead screw (15). One end of the lead screw (15) passes through one side of the inner wall of the rectangular groove to its outside and is fixedly connected to the output end of the sliding motor (17). The sliding motor (17) is installed at one end of the fixed arm. The top of the movable bearing (16) is welded with a rotating seat (18), the top of the rotating seat (18) is fixedly connected to the first movable part (19), the first movable part (19) is welded to one end of the connecting arm (20), the other end of the connecting arm (20) is welded to the second movable part (21), the second movable part (21) is fixedly connected to the bottom side of the movable ring (22); the two sets of the extraction components are set at both ends of the sampling tube (13) and are symmetrically arranged about the central axis of the sampling tube (13); the two connecting arms (20) are always symmetrically arranged about the central axis of the sampling tube (13) during operation; The wedge block (24) has two grooves on its top, and a spring (25) is fixedly connected inside each of the two grooves. One end of the spring (25) is connected to the movable block at the bottom of the kit (26), and the movable block is slidably connected inside the groove. A screen (28) is welded to the opening of the arc-shaped groove at the top of the kit (26). The screen (28) is used to screen the coal seam soil scraped off the outer wall of the sampling tube (13) by the scraper (27) and to screen the smaller soil particles into the "L"-shaped groove until they are introduced into the gap between the wedge block (24) and the outer wall of the sampling tube (13), thereby increasing the friction between the wedge block (24) and the outer wall of the sampling tube (13).

Images