Geological sampling detection device for coal mine exploration

Abstract

The invention discloses a geological sampling detection device for coal mine exploration, and relates to the technical field of coal mine geological sampling. The device comprises a frame body and a driving assembly installed on the frame body, the driving assembly comprises a sampling pipe arranged on one side of the frame body, and the peripheral side face of the sampling pipe is sleeved with an extrusion assembly; each extrusion assembly comprises an external member, an arc-shaped groove is formed in the top of each external member, a strip-shaped groove is formed in the inner side wall of each external member, each arc-shaped groove and the corresponding strip-shaped groove are communicated with each other to form a through hole with an L-shaped cross section, a scraping plate is welded to the inner side of the top of each external member, and every two adjacent external members are connected through an elastic rope; the bottom end of the sleeve piece is arranged in the wedge block in a sliding mode through two movable blocks. By continuously moving the movable bearing back and forth at the two ends of the lead screw, multiple times of pulling of the sampling pipe can be completed, so that the sampling pipe is finally pulled out, the structure is simple, the sampling pipe is pulled out quickly, and the operation difficulty of manually pulling the sampling pipe is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mine geological sampling, and in particular relates to a geological sampling detection device for coal mine exploration. Background Art

[0002] Coal geological exploration uses 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 precise survey. The basic task is to find out the quantity, quality, geological conditions and mining technical conditions of coal resources, provide reliable resource conditions for the planning and layout of the coal industry, and provide geological basis for coal mine construction. In the process of coal mine exploration, it is necessary to sample the coal mine geology at a certain depth, and conduct relevant tests on the samples to determine the mining value of the coal mine.

[0003] At present, the process of geological sampling in coal mine exploration usually relies on sampling equipment to sample the coal seam to be explored. The traditional method is to manually hold a simple drilling device to press down, or drill the coal seam downward by rotating the drill bit, and then pull out the sampling tube, and take out the coal seam sample inside the sampling tube to complete the entire sampling process. However, this sampling method requires the cooperation of multiple workers during operation, which is time-consuming and labor-intensive and cannot meet the use requirements. In addition, general sampling equipment still requires manual hand-held downward drilling for sampling. Downward drilling uses pressure or rotational force, but it is more troublesome to pull out the sampling tube located underground, and the sampling tube located underground cannot be pulled out quickly and effectively, and there is a certain degree of operational difficulty.

[0004] The existing geological sampling and detection devices for coal mine exploration cannot meet the use requirements of rapid sampling when sampling coal seam samples, and the sampling tube after drilling is located in the underground coal seam and is inconvenient to pull out, which makes the operation difficult. Therefore, the present invention proposes a geological sampling and detection device for coal mine exploration. Summary of the invention

[0005] The purpose of the present invention is to provide a geological sampling and detection device for coal mine exploration, so as to solve the problems that the existing geological sampling and detection devices for coal mine exploration cannot meet the use requirements of rapid sampling when sampling coal seam samples, and the sampling tube after drilling is located in the underground coal seam and is inconvenient to pull out, which makes the operation difficult.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is a geological sampling detection device for coal mine exploration, including a frame body and a driving assembly installed on the frame body. The driving assembly includes a sampling pipe arranged on one side of the frame body. The outer circumferential surface of the sampling pipe is sleeved with an extrusion assembly. The frame body serves as the main frame part of the sampling detection device and plays a role in installing each component. The sampling pipe drills into the coal seam under the drive of a drilling motor. The inside of the sampling pipe is a hollow structure for containing the coal seam soil sampled. The extrusion assembly includes a sleeve. An arc-shaped groove is opened at the top of the sleeve, and a strip-shaped groove is further opened on the inner side wall of the sleeve. The arc-shaped groove and the strip-shaped groove communicate with each other to form a through hole with an "L"-shaped cross section. A scraper is welded to the inner side near the top of the sleeve. The bottom end of the sleeve is slidably arranged inside a wedge block through two movable blocks. Four groups of the wedge blocks and the sleeves above them are arranged around the same center on the outer circumferential surface of the sampling pipe. Each adjacent sleeve is connected by an elastic rope. An extrusion ring is arranged below the four wedge blocks. The inner side surface of the extrusion ring is an inclined surface that fits the outer inclined surface of the wedge block. The bottom of the extrusion ring is welded to the top of a movable ring. There are four sleeves, all of which are wrapped on the outer pipe wall of the sampling pipe, and there is a gap between the outer pipe wall of the sampling pipe, which is sufficient for the coal seam soil particles adhering to the outer pipe wall of the sampling pipe to pass through. When it is necessary to pull out the sampling pipe upward, the extrusion ring will push the wedge block upward, and the four wedge blocks are continuously squeezed and move closer to the outer pipe wall. At this time, the sleeve drives the scraper at the top to move upward along the outer pipe wall for a short distance. And because the scraper moves closer to the outer pipe wall, it can scrape off the coal seam soil particles on the surface of the outer pipe wall, screening out the large coal seam soil particles and putting the small coal seam soil particles into the space between the wedge block and the outer pipe wall through the "L"-shaped groove, increasing the friction between the outer pipe wall and the wedge block. In this way, the pulling process can be more stable, and the situation of sliding due to small friction will not occur. The reason for adding the coal seam soil particles on the outer pipe wall to the space between the outer pipe wall and the wedge block is to avoid the small amount of soil particles in a small section between the outer pipe wall and the wedge block, which is not enough to generate a large friction. Therefore, the scraper is used to scrape the coal seam soil particles on the surface of a longer section of the outer pipe wall and gather them together to increase the friction between the outer pipe wall and the wedge block. The outer surface of the wedge block is an inclined surface that fits the inclined surface on the inner side of the extrusion ring. Therefore, when the extrusion ring moves upward, the wedge block is squeezed inward. The reason why the sleeve and the wedge block on its top do not continue to move upward when the extrusion ring pushes the wedge block upward is that the sleeve exerts a downward gravity on the wedge block under the action of gravity, resulting in the wedge block being easily squeezed inward. At the same time, when the scraper scrapes the coal seam soil outside the outer pipe wall, it will be resisted. Therefore, the wedge block is easily squeezed and clamped the outer pipe wall. A set of extraction components are respectively arranged on the opposite sides at the bottom of the extrusion component; each extraction component includes a connecting arm, one end of the connecting arm is arranged at the bottom of the side surface of the extrusion ring, the other end of the connecting arm is arranged on a movable bearing, the movable bearing is slidably connected to the circumferential side surface of a lead screw, the lead screw is installed inside the frame body, and the connecting arm is used to connect the movable bearing and the movable ring. When the movable bearing moves to the central 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, that is, the initial position. The movable bearing moves from one end of the lead screw to the other end, which is the movable state of extracting the sampling tube once. In the initial state, the movable bearing is at one end of the lead screw. During the process when the movable bearing moves to the midpoint of the lead screw, the connecting arm pushes the movable ring to move to the highest point. At this time, the sampling tube is pulled upward by a certain distance. At this time, the extrusion component is in the state of extruding the sampling tube. This distance is the moving distance of the movable ring. When the movable bearing continues to move along the lead screw to the other end point, during this process, the movable ring continuously descends, but does not drive the sampling tube to descend. At this time, the extrusion component is in the relaxed state.

[0007] Preferably, wheels are respectively arranged at both ends on one side of the frame body. An installation column is installed on the top of the frame body. The installation column and the frame body are firmly connected through a support frame. The three form a right triangle. The wheels are used to drive the frame body to move. The installation column is used to install the driving component. The support frame is used to reinforce the installation column and the frame body.

[0008] Preferably, the driving component includes a rack. The rack is welded to one side surface of the installation column. A chute is opened on the side surface of the installation column adjacent to the rack. A slider is slidably arranged up and down inside the chute. One end of the slider is fixedly connected to an installation frame. An installation hole is opened inside the installation frame. A lifting motor is installed and connected inside the installation hole. The output end of the lifting motor is welded to the center point of one side surface of a gear. The gear is meshed and connected to the rack. The rack is used to allow the gear to move up and down on its surface. The lifting motor is used to start the gear to rotate. The installation frame is used to fixedly install the lifting motor. The slider slides up and down inside the chute.

[0009] Preferably, a fixed seat is welded to the other side surface of the installation frame. A drilling motor is installed at the top end of the fixed seat. The bottom output end of the drilling motor penetrates through the fixed seat and is fixedly connected to the top end of a disassembly and assembly part. The bottom of the disassembly and assembly part 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 fixed seat is used to fix the drilling motor. The drilling motor is used to drive the sampling tube to rotate and drill downward into the coal seam. The disassembly and assembly part can be movably disassembled and assembled with the sampling tube. The hollow drill bit is used to drill downward, but does not affect the coal seam soil from entering the inside of the sampling tube.

[0010] Preferably, two fixing arms extend from one side of the frame body close to the mounting column. The two fixing arms are located on both sides of the mounting column and are symmetrically arranged. A rectangular groove is formed at the top of each fixing arm. The inner walls of the opposite sides of the rectangular groove are respectively movably connected to the two ends of the lead screw. One end of the lead screw penetrates through the inner wall of one side of the rectangular groove to the outside, and is fixedly connected to the output end of the sliding motor. The sliding motor is installed at one end of the fixing 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 member. The first movable member is welded to one end of the connecting arm. The other end of the connecting arm is welded to the second movable member. The second movable member is fixedly connected to the bottom side of the movable ring. The two extraction assemblies 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 the working process.

[0012] Preferably, two grooves are formed at the top of the wedge block. A spring is fixedly connected to the inside of each of the two grooves. One end of the spring is connected to the movable block at the bottom of the kit. The movable block is slidably connected to the inside of the groove.

[0013] Preferably, a screen is welded at the notch position 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 screen the finer granular soil into the "L"-shaped groove until it is introduced into the gap between the wedge block and the outer wall of the sampling tube, 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. By setting the extraction assembly in the present invention, when it is necessary to pull out the sampling tube from the coal seam soil after the drilling process is completed, the extraction assembly is started. In the initial state, the movable bearing is located at one end of the lead screw, and the movable bearing continuously moves towards the midpoint of the lead screw, thereby pushing the upper end of the connecting arm to continuously rise. Therefore, the extrusion assembly is driven to continuously rise until the movable bearing reaches the midpoint of the lead screw and the extrusion assembly reaches the highest point. During this process, the extrusion assembly completes the clamping of the sampling tube in a very short time and distance. During the rising process of the extrusion assembly, the sampling tube is driven to rise to complete a pulling process. After one pulling is completed, the movable bearing continues to move along the lead screw. At this time, the extrusion assembly no longer receives an upward extrusion force, so it loosens the sampling tube, and the extrusion assembly moves downward until the movable bearing moves to the other end point of the lead screw. At this time, the extrusion assembly reaches the initial height position. By continuously moving the movable bearing back and forth at both ends of the lead screw, multiple extractions of the sampling tube can be completed, and finally the sampling tube can be pulled out. This structure simply and quickly pulls out the sampling tube, reducing the operation difficulty of manually pulling out the sampling tube.

[0015] 2. The present invention is provided with an extrusion assembly. When the extraction assembly pushes the extrusion ring upward, the inner inclined surface of the extrusion ring contacts the outer inclined surface of the wedge block, squeezing the wedge block inward. Since the wedge block and the kit can move back and forth through the movable block and the groove, the extrusion process is relatively easy. The extrusion ring will push the wedge block upward, and the four wedge blocks are continuously squeezed and move closer to the outer pipe wall. At this time, the kit drives the scraper at the top to move upward along the outer pipe wall for a short distance. And because the scraper moves closer to the outer pipe wall, it can scrape the coal seam soil particles on the surface of the outer pipe wall, sieve out the large coal seam soil particles, and put the small coal seam soil particles into the space between the wedge block and the outer pipe wall through the "L"-shaped groove, increasing the friction between the outer pipe wall and the wedge block. In this way, the extraction process can be made more stable, and the situation of sliding due to small friction will not occur. The reason for adding the coal seam soil particles on the outer pipe wall between the outer pipe wall and the wedge block is to avoid the small amount of soil particles in a small section between the outer pipe wall and the wedge block, which is not enough to generate a large friction force. Therefore, the scraper is used to scrape the coal seam soil particles on the surface of a longer section of the outer pipe wall and gather them together to increase the friction between the outer pipe wall and the wedge block. The outside of the wedge block is an inclined surface, which is adapted to the inclined surface on the inner side of the extrusion ring. Therefore, when the extrusion ring moves upward, the wedge block is squeezed inward. The reason why the extrusion ring and the kit on top of the wedge block do not continue to move upward is that the kit exerts a downward gravity on 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. Therefore, the wedge block is easily squeezed and clamped the outer pipe wall. Therefore, the present invention can clamp the sampling pipe with a large friction force and complete the extraction of the sampling pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic diagram of the overall structure of the geological sampling and detection device for coal mine exploration provided by the present invention; Figure 2 For the present invention Figure 1 The enlarged view at A; Figure 3 It is a front view structure schematic diagram of the geological sampling and detection device for coal mine exploration provided by the present invention; Figure 4 It is a top view structure schematic diagram of the geological sampling and detection device for coal mine exploration provided by the present invention; Figure 5Schematic structural diagram of the extraction component of the geological sampling detection device for coal mine exploration provided by the present invention; Figure 6 Schematic cross-sectional structural diagram of the extraction component of the geological sampling detection device for coal mine exploration provided by the present invention; Figure 7 Schematic structural diagram of the extrusion component of the geological sampling detection device for coal mine exploration provided by the present invention.

[0018] In the drawings, the list of components represented by each reference numeral is as follows: 1. Frame; 2. Wheels; 3. Support frame; 4. Installation column; 5. Lifting motor; 6. Slide block; 7. Installation frame; 8. Gear; 9. Rack; 10. Drilling motor; 11. Fixed seat; 12. Disassembly and assembly part; 13. Sampling pipe; 14. Hollow drill bit; 15. Lead screw; 16. Movable bearing; 17. Sliding motor; 18. Rotating seat; 19. First movable part; 20. Connecting arm; 21. Second movable part; 22. Movable ring; 23. Extrusion ring; 24. Wedge block; 25. Spring; 26. Kit; 27. Scraper; 28. Sieve mesh. Detailed implementation manners

[0019] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0020] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0022] Refer to Figure 1-7, the present invention is a geological sampling and detection device for coal mine exploration, including a frame body 1 and a driving component installed on the frame body. The driving component includes a sampling pipe 13 arranged on one side of the frame body 1. An extrusion component is sleeved on the circumferential side of the sampling pipe 13. The frame body 1 serves as the main frame part of the sampling and detection device and functions to install each component. The sampling pipe 13 drills into the coal seam under the drive of a drilling motor 10. The inside of the sampling pipe 13 is a hollow structure for containing the coal seam soil sampled; The extrusion component includes a sleeve 26. An arc-shaped groove is formed at the top of the sleeve 26, and a strip-shaped groove is further formed on the inner side wall of the sleeve 26. The arc-shaped groove and the strip-shaped groove communicate with each other to form a through hole with an "L"-shaped cross-section. A scraping plate 27 is welded to the inner side near the top of the sleeve 26. The bottom end of the sleeve 26 is slidably arranged inside a wedge-shaped block 24 through two movable blocks. Four groups of wedge-shaped blocks 24 and the sleeves above them are arranged around the same center on the circumferential side of the sampling pipe 13; Each adjacent sleeve 26 is connected by an elastic cord 29. A pressing ring 23 is arranged below the four wedge-shaped blocks 24. The inner side surface of the pressing ring 23 is an inclined surface that fits the outer inclined surface of the wedge-shaped block 24; The bottom of the pressing ring 23 is welded to the top of the movable ring 22. There are four sleeves 26, all of which are wrapped around the outer pipe wall of the sampling pipe 13, and there is a gap between the sleeves 26 and the outer pipe wall of the sampling pipe 13, which is sufficient to allow the coal seam soil particles adhering to the outer pipe wall of the sampling pipe 13 to pass through. When it is necessary to pull out the sampling pipe 13 upward, the pressing ring 23 will push the wedge-shaped block 24 upward, and the four wedge-shaped blocks 24 are continuously squeezed and move closer to the outer pipe wall. At this time, the sleeve 26 drives the scraping plate 27 at the top to move upward along the outer pipe wall for a short distance. And because the scraping plate 27 moves closer to the outer pipe wall, it can scrape the coal seam soil particles on the surface of the outer pipe wall, screening out the large-particle coal seam soil particles and putting the small-particle coal seam soil particles into the space between the wedge-shaped block 24 and the outer pipe wall through the "L"-shaped groove, increasing the friction between the outer pipe wall and the wedge-shaped block 24. In this way, the pulling process can be made more stable, and the situation of sliding due to small friction will not occur; The reason for adding the coal seam soil particles on the outer pipe wall to the space between the outer pipe wall and the wedge-shaped block 24 is to prevent the small amount of soil particles in a small section between the outer pipe wall and the wedge-shaped block 24 from being insufficient to generate a large friction force. Therefore, the scraping plate 27 is used to scrape the coal seam soil particles on the surface of a relatively long section of the outer pipe wall and gather them together to increase the friction between the outer pipe wall and the wedge-shaped block 24; The outer part of the wedge-shaped block 24 is an inclined surface that fits the inclined surface on the inner side of the pressing ring 23. Therefore, when the pressing ring 23 moves upward, the wedge-shaped block 24 is squeezed inward; The reason why the pressing ring 23 does not continuously move upward when pushing the wedge-shaped block 24 and the sleeve 26 above it is that the sleeve 26 exerts a downward gravity on the wedge-shaped block 24 under the action of gravity, resulting in the wedge-shaped block 24 being easily squeezed inward. At the same time, when the scraping plate 27 scrapes the coal seam soil outside the outer pipe wall, it will be subject to resistance. Therefore, the wedge-shaped block 24 is easily squeezed and clamped the outer pipe wall; A set of extraction components are respectively arranged on the opposite sides at the bottom of the extrusion component; the extraction component includes a connecting arm 20, one end of the connecting arm 20 is arranged at the bottom of the side of the extrusion ring 23, the other end of the connecting arm 20 is arranged on the movable bearing 16, the movable bearing 16 is slidably connected to the circumferential side of the lead screw 15, the lead screw 15 is installed inside the frame body 1, the connecting arm 20 is used to connect the movable bearing 16 and the movable ring 22. When the movable bearing 16 moves to the central position of the lead screw 15, the connecting arm 20 pushes the movable ring 22 to the 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 the lowest point, that is, the initial position. The movable bearing 16 moves from one end of the lead screw 15 to the other end, which is the movable state of extracting 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 move to the highest point. At this time, the sampling tube 13 is pulled up by a certain distance. At this time, the extrusion component is in the state of extruding the sampling tube 13. This distance is the moving distance of the movable ring 22. When the movable bearing 16 continues to move along the lead screw 15 to the other end point, during this process, the movable ring 22 continuously descends, but does not drive the sampling tube 13 to descend. At this time, the extrusion component is in a relaxed state.

[0023] Wherein, wheels 2 are respectively arranged at both ends of one side of the frame body 1, an installation column 4 is installed on the top of the frame body 1, and the installation column 4 and the frame body 1 are fixedly connected and reinforced by a support frame 3. The three form a right triangle. The wheels 2 are used to drive the movement of the frame body 1, the installation column 4 is used to install the drive component, and the support frame 3 is used to reinforce the installation column 4 and the frame body 1.

[0024] Wherein, the drive component includes a rack 9, the rack 9 is welded to one side of the installation column 4, and a chute is opened on the side of the installation column 4 adjacent to the rack 9. A slider 6 is slidably arranged up and down inside the chute. One end of the slider 6 is fixedly connected to an installation frame 7. An installation hole is opened inside the installation frame 7, and a lifting motor 5 is installed and connected inside the installation 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 and connected to the rack 9. The rack 9 is used for the gear 8 to move up and down on its surface. The lifting motor 5 is used to start the rotation of the gear 8. The installation frame 7 is used to fixedly install the lifting motor 5, and the slider 6 slides up and down inside the chute.

[0025] Among them, a fixing seat 11 is welded to the other side of the installation frame 7. The top of the fixing seat 11 is provided with a drilling motor 10. The bottom output end of the drilling motor 10 penetrates through the fixing seat 11 and is fixedly connected to the top end 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 pipe 13. A hollow drill bit 14 is installed at the bottom of the sampling pipe 13. The fixing seat 11 is used to fix the drilling motor 10. The drilling motor 10 is used to drive the sampling pipe 13 to rotate and drill downward into the coal seam. The disassembly and assembly part 12 can be detachably assembled with the sampling pipe 13. The hollow drill bit 14 is used to drill downward without affecting the coal seam soil from entering the inside of the sampling pipe 13.

[0026] Among them, two fixing arms extend from one side of the frame body 1 adjacent to the installation column 4. The two fixing arms are located on both sides of the installation column and are symmetrically arranged. Each fixing arm is provided with a rectangular groove at the top. The inner walls of the opposite sides of the rectangular groove are respectively movably connected to both ends of the lead screw 15. One end of the lead screw 15 penetrates through one side inner wall of the rectangular groove to the 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 fixing arm. The sliding motor 17 is used to drive the lead screw 15 to rotate.

[0027] Among them, a rotating seat 18 is welded to the top of the movable bearing 16. 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 of the side of the movable ring 22. Two extraction components are arranged at both ends of the sampling pipe 13 and are symmetrically arranged about the central axis of the sampling pipe 13. The two connecting arms 20 are always symmetrically arranged about the central axis of the sampling pipe 13 during the working process.

[0028] Among them, two grooves are provided at the top of the wedge block 24. A spring 25 is fixedly connected to the inside of each of the two grooves. One end of the spring 25 is connected to the movable block at the bottom of the kit 26. The movable block is slidably connected to the inside of the groove.

[0029] Among them, a screen 28 is welded at the notch position 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 pipe wall of the sampling pipe 13 by the scraper 27, and screen the smaller granular soil into the "L"-shaped groove until it is introduced into the gap between the wedge block 24 and the outer pipe wall of the sampling pipe 13, increasing the friction between the wedge block 24 and the outer pipe wall of the sampling pipe 13.

[0030] The above shows and describes 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 by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A geological sampling and detection device for coal mine exploration, comprising a frame body (1), and a driving assembly installed on the frame body (1), characterized in that: The driving assembly includes a sampling pipe (13) arranged on one side of the frame (1), and an extrusion assembly is sleeved on the peripheral side of the sampling pipe (13); The extrusion assembly includes a sleeve (26). An arc-shaped groove is formed at the top of the sleeve (26), and a strip-shaped groove is formed on the inner side wall of the sleeve (26). The arc-shaped groove and the strip-shaped groove communicate with each other to form a through hole with an "L"-shaped cross-section. A scraper (27) is welded to the inner side near the top of the sleeve (26). Each adjacent sleeve (26) is connected by an elastic cord (29). The bottom end of the sleeve (26) is slidably arranged inside a wedge block (24) through two movable blocks. Four groups of the wedge blocks (24) and the sleeves above them are arranged around the same center on the peripheral side of the sampling pipe (13). A pressing ring (23) is arranged below the four wedge blocks (24). The inner side of the pressing ring (23) is an inclined surface that fits the outer inclined surface of the wedge block (24). The bottom of the pressing ring (23) is welded to the top of the movable ring (22); A set of extraction components are respectively arranged on the opposite sides at the bottom of the extrusion assembly; the extraction components include connecting arms (20). One end of the connecting arm (20) is arranged at the bottom of the side surface of the pressing ring (23), and the other end of the connecting arm (20) is arranged on a movable bearing (16). The movable bearing (16) is slidably connected to the peripheral side of the lead screw (15), and the lead screw (15) is installed inside the frame (1).

2. The geological sampling and detection device for coal mine exploration according to claim 1, wherein, Wheels (2) are respectively arranged at both ends on one side of the frame (1). An installation column (4) is installed on the top of the frame (1). The installation column (4) and the frame (1) are fixedly connected and reinforced by a support frame (3), and a right triangle is formed among the three of them.

3. The geological sampling and detection device for coal mine exploration according to claim 2, wherein, The driving assembly includes a rack (9). The rack (9) is welded to one side surface of the installation column (4). A chute is formed on the side surface of the installation column (4) near the installation of the rack (9). A slider (6) is slidably arranged up and down inside the chute. One end of the slider (6) is fixedly connected to an installation frame (7). An installation hole is formed inside the installation frame (7), and a lifting motor (5) is installed and connected inside the installation hole. The output end of the lifting motor (5) is welded to the center point of one side surface of a gear (8), and the gear (8) is meshed with the rack (9).

4. A geological sampling and detection device for coal mine exploration according to claim 3, wherein, A fixed seat (11) is welded to the other side surface of the installation frame (7). A drilling motor (10) is installed at the top of the fixed seat (11). The bottom output end of the drilling motor (10) penetrates through the fixed seat (11) and is fixedly connected to the top end of a disassembly and assembly part (12). The bottom of the disassembly and assembly part (12) is installed and connected to the top of the sampling pipe (13); a hollow drill bit (14) is installed at the bottom of the sampling pipe (13).

5. The geological sampling and detection device for coal mine exploration according to claim 4, characterized in that, On one side of the frame body (1) adjacent to the installation column (4), two fixed arms extend. The two fixed arms are located on both sides of the installation column and are symmetrically arranged. Each fixed arm is provided with a rectangular groove at the top. The inner walls of the opposite sides of the rectangular groove are respectively movably connected to the two ends of the lead screw (15). One end of the lead screw (15) penetrates through the inner wall of one side of the rectangular groove to the 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.

6. The geological sampling and detection device for coal mine exploration according to claim 5, wherein, A rotating seat (18) is welded to the top of the movable bearing (16). 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 extraction components are arranged 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 the working process.

7. The geological sampling and detection device for coal mine exploration according to claim 6, characterized in that, Two grooves are provided at the top of the wedge-shaped block (24). A spring (25) is fixedly connected to the inside of each of the two grooves. One end of the spring (25) is connected to the movable block at the bottom of the kit (26). The movable block is slidably connected to the inside of the groove.

8. A geological sampling and detection device for coal mine exploration according to claim 7, characterized in that, A screen (28) is welded at the notch position 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 pipe wall of the sampling tube (13) by the scraper (27), and screen the smaller granular soil into the "L"-shaped groove until it is introduced into the gap between the wedge-shaped block (24) and the outer pipe wall of the sampling tube (13), increasing the friction force between the wedge-shaped block (24) and the outer pipe wall of the sampling tube (13).

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