Geological exploration wireline coring device

Abstract

The application discloses a geological prospecting rope coring device, which is arranged in a drill cylinder, the bottom end of the drill cylinder is fixedly connected with a plurality of drill teeth, and the device comprises a coring cylinder, the coring cylinder is provided with a plurality of sections, connecting pieces are fixedly connected between adjacent coring cylinders, and the connecting pieces are used for quickly connecting and disconnecting the two adjacent coring cylinders; a pulling-out cylinder is arranged above the coring cylinder at the top end, the bottom surface of the pulling-out cylinder is fixedly connected with the coring cylinder at the top end through the connecting piece, and the top end of the pulling-out cylinder is detachably connected with a quick connecting assembly used for lifting the coring device; and the bottom surface of the coring cylinder at the bottom end is provided with an anti-falling cylinder, and the anti-falling cylinder is provided with a safety assembly used for preventing the rock core from falling. The application can guarantee the clamping force of the extracted rock core and reduce the accident probability of falling in the rock core extraction process.

Description

Technical Field

[0001] This invention relates to the field of geological exploration technology, and in particular to a wireline coring device for geological exploration. Background Technology

[0002] A wireline coring device is a tool that allows drilling cores to be retrieved from the bottom of a hole without lifting the drill string. It typically consists of an inner and outer core tube assembly, an inner tube retrieval device, and other components. It features simple structure, high drilling efficiency, good core quality, shortest core soaking time, long drill bit life, and low labor intensity. However, in practical use, as the length of cores retrieved in a single operation increases, the weight of the cores used to improve sampling efficiency also increases. This leads to insufficient clamping force in the inner tube of existing coring devices, causing core detachment accidents. This not only increases the workload of secondary retrieval but can also cause the core to deviate, making it impossible to retrieve and resulting in drill string lifting accidents. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention proposes a wireline coring device for geological exploration, which can ensure the clamping force of the extracted rock core and reduce the probability of core detachment during the extraction process.

[0004] To achieve the above objectives, the present invention provides the following solution:

[0005] A geological exploration wireline coring device is installed inside a drill barrel. Several drill teeth are fixedly connected to the bottom end of the drill barrel, which includes a core tube. The core tube has several sections, and a connector is fixedly connected between adjacent core tubes for quick connection and disconnection. An extraction tube is located above the top core tube, and its bottom surface is fixedly connected to the top core tube via the connector. A quick-connect assembly for lifting the coring device is detachably connected to the top of the extraction tube. An anti-detachment tube is located on the bottom surface of the bottom core tube, and a safety component is installed inside the anti-detachment tube to prevent core core from falling out.

[0006] Preferably, the connector includes a plurality of inner fins and a plurality of outer fins, the top surface of the inner fins being fixedly connected to the bottom surface of the adjacent core-taking cylinder, and the bottom surface of the outer fins being fixedly connected to the top surface of the adjacent core-taking cylinder; the inner fins and the outer fins are screwed together, the outer surface of the outer fins is threaded, and a plurality of the outer fins are screwed together with a retaining ring by the thread, the outer surface of the retaining ring being lower than the outer surface of the core-taking cylinder.

[0007] Preferably, the quick-connect component includes an adapter plate, with a plurality of snap-fit ​​legs rotatably connected to the periphery of the adapter plate. A plurality of snap-fit ​​blocks are fixed to the outer surfaces of the snap-fit ​​legs, and a wedge-shaped block is fixed to the inner surface of each snap-fit ​​leg. One side of the wedge-shaped block has an arc-shaped surface, and the wedge-shaped block is adapted to a conical first driving block via the arc-shaped surface. The first driving block and the wedge-shaped block are slidably connected. A plurality of snap-fit ​​holes are formed at the top of the inner wall of the pull-out cylinder, and these snap-fit ​​holes are adapted to and detachably connected to the snap-fit ​​blocks. A pull stud is fixed to the top of the wedge-shaped block, and the top of the pull stud penetrates the adapter plate and is screwed to it. A fastening nut is screwed to the side of the pull stud. Limiting blocks are symmetrically fixed to the sides of the adapter plate. A limiting groove is formed on the top surface of the pull-out cylinder, which engages with the limiting blocks. The pull stud is detachably connected to an external rope buckle.

[0008] Preferably, the bottom surface of the anti-detachment cylinder has an angled opening, and two vertical first through holes are symmetrically opened on the inclined surface of the angle about the center of the anti-detachment cylinder. The safety component is disposed in the first through hole, and two vertical second through holes are opened on the side wall of the core-taking cylinder. The second through holes are connected to the first through holes and are aligned vertically.

[0009] Preferably, the safety assembly includes a reel rotatably connected to any one of the first through holes. A strip is wound around the outer side of the reel, and a guide rod passes through one end of the strip. The guide rod is fixedly connected to the first through hole, and an electromagnet is fixedly connected to the bottom surface of the guide rod. The bottom end of the electromagnet is inclined towards the strip. Several driving stones repelling the electromagnet are embedded on the side of the strip. An iron column is fixedly connected to one end of the strip. A fixing plug is fixedly connected to the top of the inner wall of another first through hole, and the fixing plug is connected to an external air compressor. A piston is disposed below the fixing plug, and the piston is slidably connected to the first through hole. A connecting rod is fixedly connected to the bottom surface of the piston, and a wedge-shaped strong magnetic block is fixedly connected to the bottom end of the connecting rod. The strong magnetic block is detachably connected to the iron column. A limit assembly is disposed below the piston, and the limit assembly is detachably connected to the piston.

[0010] Preferably, the limiting component includes a slide rod, one end of which is fixedly connected to the side wall of the first through hole, and a second driving block is slidably connected to one end of the slide rod. One end of the second driving block has an inclined surface, and the second driving block is adapted to the strong magnetic block and intermittently slides in contact with it.

[0011] Preferably, the safety assembly includes two fixing plugs, which are respectively fixedly connected to the top of the inner wall of the two first through holes. A piston column is slidably connected to each of the two first through holes. A sling is fixedly connected to the bottom surface of the piston column, and an anti-detachment ring is fixedly connected to one end of the sling. The anti-detachment ring is embedded in the inclined surface of the angled opening on the bottom surface of the anti-detachment cylinder.

[0012] Preferably, the anti-detachment ring includes a first half-ring and a second half-ring. The two end faces of the first half-ring and the two end faces of the second half-ring are directly opposite each other and rotatably connected. Insertion holes are respectively opened on the two end faces of the first half-ring and the two end faces of the second half-ring. A first tension spring is fixedly connected between the two end faces of the two insert holes. The two ends of the first half-ring and the two ends of the second half-ring are respectively rotatably connected to the sling. The first half-ring and the second half-ring are both embedded in the inclined surface of the beveled angle opened on the bottom surface of the anti-detachment cylinder.

[0013] Preferably, the anti-detachment ring includes a first half-ring and a second half-ring. The two end faces of the first half-ring and the two end faces of the second half-ring are respectively provided with insertion holes. A pull rod is provided in the insertion hole. The two ends of the pull rod are respectively fixedly connected to a sliding ring. The sliding ring is slidably connected to the insertion hole. An anti-detachment disc is fixedly connected to the opening of the insertion hole. The pull rod is fixedly connected to the sling. The pull rod is made of elastic resin material.

[0014] Preferably, the middle portions of the first half-ring and the second half-ring are disconnected and fixedly connected by a second tension spring; magnets are embedded in the side surfaces of the first half-ring and the second half-ring, and the first half-ring and the second half-ring are detachably connected to the anti-detachment cylinder through the magnets.

[0015] Compared with the prior art, the present invention has the following advantages and technical effects:

[0016] The core-retrieving cylinder of the present invention is interconnected by several connecting parts, which realizes the adjustment of the core-retrieving length and enables quick disassembly, thereby improving the efficiency of core retrieval.

[0017] The bottom of the extraction cylinder provided at the bottom of the core sampling device of the present invention is equipped with a safety component, which can lift the removed rock core and prevent the rock core from falling during the lifting of the core sampling device.

[0018] The extraction tube at the top of the core sampling device of the present invention can be detachably connected to the external lifting component, namely the rope buckle, which facilitates lifting and can also hold back the rising core to prevent the core from escaping and losing the sample. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0020] Figure 1 This is a side view of the structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the main structure of the present invention;

[0022] Figure 3 This is a side view of the quick-connect assembly.

[0023] Figure 4 This is a cross-sectional view of the anti-detachment sleeve structure in Example 1;

[0024] Figure 5 This is a side view of the connector structure.

[0025] Figure 6 This is a side view of the pull-out cylinder structure.

[0026] Figure 7 This is a side view of the anti-detachment component in Example 2;

[0027] Figure 8 This is a side view of the anti-detachment component in Example 3;

[0028] Figure 9 This is a schematic diagram of the side view of the first semi-ring structure;

[0029] Figure 10 This is a side view structural diagram of Example 4;

[0030] The components include: 1. Drill barrel; 2. Drill teeth; 3. Core tube; 4. Pull-out tube; 5. Anti-detachment tube; 6. Inner fin; 7. Outer fin; 8. Snap-fit ​​ring; 9. Adapter plate; 10. Snap-fit ​​leg; 11. Snap-fit ​​block; 12. Wedge block; 13. First drive block; 14. Snap-fit ​​hole; 15. Pull stud; 16. Fastening nut; 17. Limiting block; 18. First through hole; 19. Second through hole; 20. Reel; 21. 1. Slip bar; 22. Guide rod; 23. Electromagnet; 24. Iron column; 25. Fixing plug; 26. Piston column; 27. Connecting rod; 28. Strong magnet; 29. ​​Driving stone; 30. Slide rod; 31. Second driving block; 32. Sling; 33. First half ring; 34. Second half ring; 35. Insertion hole; 36. First tension spring; 37. Pull rod; 38. Slip ring; 39. Anti-detachment disc; 40. Second tension spring. Detailed Implementation

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] It should be noted that all components in the technical solution of this application require necessary additional facilities for water supply, oil supply, and power supply for driving and / or control. Unless otherwise stated, they are assumed to be used and equipped with existing technology and no special explanation is required.

[0033] It should be noted that, in order to make the above-mentioned objectives, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Example 1:

[0035] Depend on Figure 1-6 The illustrated geological exploration wireline coring device is installed inside a drill barrel 1. Several drill teeth 2 are fixedly connected to the bottom end of the drill barrel 1. It includes a core sampling cylinder 3, which is provided with several sections. Adjacent core sampling cylinders 3 are fixedly connected with connectors for quick connection and disconnection of adjacent core sampling cylinders 3. An extraction cylinder 4 is provided above the top core sampling cylinder 3. The bottom surface of the extraction cylinder 4 is fixedly connected to the top core sampling cylinder 3 by a connector. The top end of the extraction cylinder 4 is detachably connected to a quick-connect assembly for lifting the coring device. An anti-detachment cylinder 5 is provided on the bottom surface of the bottom core sampling cylinder 3. A safety component to prevent rock core from falling out is provided inside the anti-detachment cylinder 5.

[0036] Furthermore, the drill bit 2 is fixed to the bottom end of the drill barrel 1. The outer edge of the drill bit 2 extends out of the side wall of the drill barrel 1, and the inner edge of the drill bit 2 is on the inner side wall. The drill bit 2 is drilled to form a rock core and enters the core tube 3. This is existing technology and will not be described in detail here.

[0037] The coring cylinder 3 of this invention is interconnected by several connectors, enabling adjustment of the coring length and allowing for rapid disassembly, thus improving coring efficiency. Simultaneously, the extraction cylinder 4 at the bottom of the coring device incorporates a safety component to support the removed core sample, preventing it from falling during lifting. The extraction cylinder 4 at the top of the coring device can be detachably connected to an external lifting component, namely a rope buckle, facilitating lifting and preventing the rising core sample from escaping and being lost.

[0038] The scheme is further optimized. The connector includes several inner fins 6 and several outer fins 7. The top surface of the inner fins 6 is fixedly connected to the bottom surface of the adjacent core-taking cylinder 3, and the bottom surface of the outer fins 7 is fixedly connected to the top surface of the adjacent core-taking cylinder 3. The outer side of the inner fins 6 is threaded, and the inner and outer sides of the outer fins 7 are threaded. The inner fins 6 and the outer fins 7 are screwed together. The outer side of the outer fins 7 is threaded with a retaining ring 8. The outer side of the retaining ring 8 is lower than the outer side of the core-taking cylinder 3. The retaining ring 8 has an opening on its side to prevent the closed retaining ring 8 from being difficult to remove quickly from the outer fins 7.

[0039] Further optimization of the design includes a quick-connect component: an adapter plate 9. Several locking legs 10 are rotatably connected to the periphery of the adapter plate 9. Several locking blocks 11 are fixed to the outer surfaces of the locking legs 10. The adapter plate 9 can drive the locking legs 10 to rotate, allowing the locking blocks 11 fixed to the locking legs 10 to engage and disengage from the side wall of the extraction cylinder 4. A wedge-shaped block 12 is fixed to the inner surface of the locking legs 10. One side of the wedge-shaped block 12 has an arc-shaped surface, which is adapted to a conical first driving block 13. The first driving block 13 is slidably connected to the wedge-shaped block 12, and can laterally push the wedge-shaped block 12 to move. Several locking holes 14 are provided at the top of the inner wall of the extraction cylinder 4. The locking holes 14 are adapted to and detachably connected to the locking blocks 11. After the locking blocks 11 engage with the locking holes 14, it facilitates the entire core-retrieving device to be lifted and pushed down. A pull stud 15 is fixedly attached to the top of the wedge block 12, and a fastening nut 16 is screwed onto the side of the pull stud 15. The top of the pull stud 15 passes through the adapter plate 9 and is screwed onto the adapter plate 9. The fastening nut 16 presses against the top surface of the adapter plate 9 to prevent the pull stud 15 from rotating, thus fixing the locking leg 10 and the first drive block 13. Limiting blocks 17 are symmetrically fixed to the side of the adapter plate 9; the top surface of the pull-out cylinder 4 has a limiting groove that engages with the limiting blocks 17, preventing the pull stud 15 from rotating and causing the adapter plate 9 to rotate, thus preventing the wedge block 12 from being driven. The pull stud 15 is detachably connected to the external rope buckle.

[0040] Furthermore, a wedge-shaped fastening block is fixed to the bottom end of the inner fin 6, which can continuously clamp the incoming rock core and prevent it from falling out. At the same time, the locking ring 8, the inner fin 6, and the outer fin 7 are elastic steel plates, which can use deformation to clamp the rock core.

[0041] The design is further optimized by providing an angled opening on the bottom surface of the anti-detachment cylinder 5. Two vertical first through holes 18 are symmetrically opened about the center of the anti-detachment cylinder 5 on the angled surface. The safety component is installed in the first through hole 18. Two vertical second through holes 19 are opened on the side wall of the core-taking cylinder 3. The second through holes 19 are connected to the first through holes 18 and are aligned vertically. The first through holes 18 and the second through holes 19 facilitate the installation of other components and provide a vertically connected passage.

[0042] The optimized design includes a safety component comprising a spool 20 rotatably connected to any one of the first through holes 18. A strip 21 is wound around the outer side of the spool 20, with a guide rod 22 passing through one end of the strip 21. The other end of the strip 21 is fixedly connected to the outer side of the spool 20. The guide rod 22 is fixedly connected to the first through hole 18, and an electromagnet 23 is fixedly connected to the bottom surface of the guide rod 22. The bottom end of the electromagnet 23 is inclined towards the strip 21, and several repulsive actuators are embedded on the side of the strip 21. The moving stone 29 and the driving stone 29 are magnets. One end of the coil 21 is fixedly connected to an iron column 24. The coil 21 is an SK5 non-magnetic spring steel sheet, and one end of the coil 21 has a preset arc. The diameter of the arc is equal to the center distance between the two first through holes 18. A fixed plug 25 is fixedly connected to the top of the inner wall of the other first through hole 18. The fixed plug 25 is connected to an external air compressor. The external air compressor can introduce high-pressure gas into the first through hole 18 and extract air through the fixed plug 25. This is existing technology and will not be described in detail here. A piston column 26 is set below the fixed plug 25. The piston column 26 is slidably connected to the first through hole 18. The first through hole 18, the piston column 26 and the fixed plug 25 are combined to form a cylinder, which reduces the arrangement of finished cylinders and reduces the space occupied. A connecting rod 27 is fixedly connected to the bottom surface of the piston rod 26, and a wedge-shaped strong magnetic block 28 is fixedly connected to the bottom end of the connecting rod 27. The strong magnetic block 28 is detachably connected to the iron rod 24. A limit assembly is provided below the piston rod 26, and the limit assembly is detachably connected to the piston rod 26. The limit assembly includes a slide rod 30, one end of which is fixedly connected to the side wall of the first through hole 18. One end of the second drive block 31 has an inclined surface, and the other end of the second drive block 31 has a sliding hole. A spring is fixedly connected between the bottom surface of the sliding hole and the end face of one end of the slide rod 30. One end of the slide rod 30 is slidably connected to the sliding hole. The second drive block 31 is adapted to the strong magnetic block 28 and intermittently slides in contact.

[0043] Example 2:

[0044] Depend on Figure 7 As shown, the safety assembly includes two retaining plugs 25, which are respectively fixedly connected to the top of the inner wall of two first through holes 18. Piston columns 26 are slidably connected to the two first through holes 18, and lifting cables 32 are fixedly connected to the bottom surface of the piston columns 26. An anti-detachment ring is fixedly connected to one end of the lifting cable 32. A clearance groove is formed on the inclined surface of the bottom surface of the anti-detachment cylinder 5, and the anti-detachment ring is embedded in the clearance groove.

[0045] The design is further optimized. The anti-detachment ring includes a first half-ring 33 and a second half-ring 34. The two end faces of the first half-ring 33 and the two end faces of the second half-ring 34 are directly opposite each other and rotatably connected. The two end faces of the first half-ring 33 and the two end faces of the second half-ring 34 are respectively provided with insertion holes 35. A first tension spring 36 is fixedly connected between the end faces of the two directly opposite insertion holes 35. The first tension spring 36 can tighten the first half-ring 33 and the second half-ring 34 to prevent them from flipping due to their own weight. The two ends of the first half-ring 33 and the two ends of the second half-ring 34 are respectively rotatably connected to the sling 32. The first half-ring 33 and the second half-ring 34 are both embedded in the clearance groove opened on the bottom surface of the anti-detachment cylinder 5.

[0046] Example 3:

[0047] Depend on Figure 8 As shown, the anti-detachment ring includes a first half-ring 33 and a second half-ring 34. Insertion holes 35 are respectively opened on both ends of the first half-ring 33 and the second half-ring 34. A pull rod 37 is installed inside the insertion hole 35. Slip rings 38 are fixedly connected to both ends of the pull rod 37, and the slip rings 38 are slidably connected to the insertion hole 35. An anti-detachment disc 39 is fixedly connected to the opening of the insertion hole 35. The pull rod 37 can slide within the insertion hole 35 by means of the slip rings 38, increasing the length of the first half-ring 33 and the second half-ring 34, and improving the applicability of anti-detachment measures on the bottom surface of the rock core. The pull rod 37 is fixedly connected to the sling 32. The pull rod 37 is made of elastic resin material.

[0048] Example 4:

[0049] Depend on Figure 10 As shown, the middle part of the first half ring 33 and the middle part of the second half ring 34 are respectively disconnected and fixedly connected by the second tension spring 40; magnets are embedded on the side of the first half ring 33 and the side of the second half ring 34 respectively, and the first half ring 33 and the second half ring 34 are detachably connected to the anti-detachment cylinder 5 through the magnets. The second tension spring 40 can further increase the length of the first half ring 33 and the second half ring 34.

[0050] The working process of this embodiment is as follows:

[0051] When the drill barrel 1, carrying the drill teeth 2, drills into the rock mass, a core will be generated at the inner cutting edge of the drill teeth 2 due to the deepening of the drill barrel 1. At this time, the core sampling device is hoisted and sent to the bottom of the drill barrel 1 along the inner wall of the drill barrel 1 via a rope buckle. Because the bottom of the anti-detachment cylinder 5 has an inner chamfer, and the inner cutting edge of the drill teeth 2 is not lower than the inner wall of the drill barrel 1, it is ensured that the core can enter the drill barrel 1. The anti-detachment cylinder 5, through the chamfer, facilitates the introduction of the core and continuously generates lateral extrusion force on the inner fins 6 and outer fins 7, causing the locking ring 8, inner fins 6 and outer fins 7 to undergo elastic deformation, maintaining the lateral extrusion force on the core, and avoiding the problem of core falling off during the core sampling process.

[0052] As the core length increases, the top surface of the core will abut against the bottom surface of the clamping leg 10. In order to determine the length of the core sample, a pressure sensor is fixed to the bottom surface of the clamping leg 10. The signal transmitted by the pressure sensor is displayed on the control terminal, which can detect the timing of core sampling in time and prevent core sampling from being interrupted.

[0053] As the drill bit 2 continues to penetrate deeper, the length of the core also increases. At the same time, the core will continuously enter the core barrel 3. The rising core will push open the wedge-shaped fastening block. The bottom surface of the fastening block is inclined towards the center of the core barrel 3, which facilitates the introduction and clamping of the core, improves the stability of the core, and prevents the core from falling out.

[0054] Two first through holes 18 are formed inside the side wall of the anti-detachment cylinder 5. A safety component is installed in each of the two through holes. In the first embodiment, when the safety component is activated, the electromagnet 23 repels the driving stone 29 embedded in the coil 21, causing the coil 21 to continuously extend and protrude outward along the guide hole on the guide rod 22 until it extends beyond the first through hole 18. After the coil 21 extends beyond the first through hole 18, it will return to its pre-tensioned state due to the lack of restraint from the first through hole 18. The curved arc continues until the iron column 24 and the strong magnetic block 28 are attracted together. The curved strip 21 will surround and support the bottom surface of the broken rock core, preventing the rock core from falling off later. At the same time, the air compressor starts to remove the air between the piston column 26 and the fixed plug 25, causing the piston column 26 to rise and pull the strong magnetic block 28 to rise. The rise of the strong magnetic block 28 will squeeze the second drive block 31 to move to one side until the bottom surface of the iron column 24 is locked onto the top surface of the strong magnetic block 28, thus fixing the strip 21.

[0055] The above are merely preferred embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A wireline coring device for geological exploration, disposed inside a drill barrel (1), wherein a plurality of drill teeth (2) are fixedly connected to the bottom end of the drill barrel (1), characterized in that, The device includes a core sampling cylinder (3), which has several sections. Adjacent core sampling cylinders (3) are fixedly connected to each other, and the connecting parts are used to quickly connect and disconnect two adjacent core sampling cylinders (3). An extraction cylinder (4) is provided above the top core sampling cylinder (3), and the bottom surface of the extraction cylinder (4) is fixedly connected to the top core sampling cylinder (3) through the connecting parts. The top of the extraction cylinder (4) is detachably connected to a quick-connect assembly for lifting the core sampling device. An anti-detachment cylinder (5) is provided on the bottom surface of the bottom core sampling cylinder (3), and a safety assembly to prevent the rock core from falling out is provided inside the anti-detachment cylinder (5). The bottom surface of the anti-detachment cylinder (5) is provided with an oblique angle. Two vertical first through holes (18) are symmetrically provided on the oblique surface of the oblique angle about the center of the anti-detachment cylinder (5). The safety component is provided in the first through hole (18). The side wall of the core-taking cylinder (3) is provided with two vertical second through holes (19). The second through holes (19) are connected to the first through holes (18) and are aligned vertically. The safety assembly includes a spool (20) rotatably connected to any one of the first through holes (18). A strip (21) is wound around the outer side of the spool (20). A guide rod (22) passes through one end of the strip (21). The guide rod (22) is fixedly connected to the first through hole (18). An electromagnet (23) is fixedly connected to the bottom surface of the guide rod (22). The bottom end of the electromagnet (23) is inclined toward the strip (21). Several driving stones (29) that repel the electromagnet (23) are embedded on the side of the strip (21). One end of the strip (21) is fixedly connected to... There is an iron column (24); a fixing plug (25) is fixedly connected to the top of the inner wall of the other first through hole (18), and the fixing plug (25) is connected to an external air compressor; a piston column (26) is provided below the fixing plug (25), the piston column (26) is slidably connected to the first through hole (18), a connecting rod (27) is fixedly connected to the bottom surface of the piston column (26), a wedge-shaped strong magnetic block (28) is fixedly connected to the bottom end of the connecting rod (27), and the strong magnetic block (28) is detachably connected to the iron column (24); a limit component is provided below the piston column (26), and the limit component is detachably connected to the piston column (26).

2. The wireline coring device for geological prospecting according to claim 1, characterized in that: The connector includes several inner fins (6) and several outer fins (7). The top surface of the inner fins (6) is fixedly connected to the bottom surface of the adjacent core-taking cylinder (3), and the bottom surface of the outer fins (7) is fixedly connected to the top surface of the adjacent core-taking cylinder (3). The inner fins (6) and the outer fins (7) are screwed together. The outer surface of the outer fins (7) is provided with threads. Several outer fins (7) are screwed together with snap rings (8) through the threads. The outer surface of the snap rings (8) is lower than the outer surface of the core-taking cylinder (3).

3. The wireline coring device for geological prospecting according to claim 1, characterized in that: The quick-connect assembly includes an adapter plate (9), which is rotatably connected to a plurality of snap-fit ​​legs (10) on its periphery. A plurality of snap-fit ​​blocks (11) are fixed to the outer side of the snap-fit ​​legs (10), and a wedge block (12) is fixed to the inner side of the snap-fit ​​legs (10). One side of the wedge block (12) is provided with an arc-shaped surface, and the wedge block (12) is adapted to a conical first driving block (13) through the arc-shaped surface. The first driving block (13) is slidably connected to the wedge block (12). A plurality of snap-fit ​​blocks are provided at the top of the inner wall of the pull-out cylinder (4). Hole (14), the snap-fit ​​hole (14) is adapted to the snap-fit ​​block (11) and can be detachably connected; the top of the wedge block (12) is fixedly connected to a pull stud (15), the top of the pull stud (15) passes through the adapter plate (9) and is screwed to the adapter plate (9), and a fastening nut (16) is screwed to the side of the pull stud (15); the side of the adapter plate (9) is symmetrically fixedly connected to a limiting block (17); the top surface of the pull-out cylinder (4) is provided with a limiting groove that is limited and snapped to the limiting block (17); the pull stud (15) is detachably connected to the external rope buckle.

4. A wireline coring device for geological prospecting according to claim 3, characterized in that: The limiting component includes a slide rod (30), one end of which is fixedly connected to the side wall of the first through hole (18), and a second driving block (31) is slidably connected to one end of the slide rod (30). One end of the second driving block (31) has an inclined surface, and the second driving block (31) is adapted to the strong magnetic block (28) and intermittently slides in contact.

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