A stable deep drilling system with high pressure resistance

Abstract

This invention relates to the field of drilling operation technology and discloses a stable deep-earth drilling system with strong pressure resistance. The system includes a support frame, a lifting frame slidably connected to the support frame, a top drive assembly mounted on the lifting frame, an intermediate docking assembly located at the bottom of the top drive assembly and connected sequentially, and a drilling assembly fixed to the bottom of the lowest intermediate docking assembly. The intermediate docking assembly includes a ring-shaped main body. This invention facilitates drilling operations and is suitable for drilling operations at different depths. During drilling, coolant is sprayed from the inner ring above the drill bit to quickly cool the drill bit, effectively protecting its safety and improving drilling efficiency and stability. It eliminates the need to remove the drill rod for core sampling, facilitating subsequent drilling operations. After core sampling, coolant flow is facilitated, preventing the core from clogging the backflowing coolant and effectively avoiding drill rod blockage in the borehole, thus improving drilling safety and facilitating drilling and core sampling operations.

Description

Technical Field

[0001] This invention relates to the field of drilling operation technology, and in particular to a stable deep-earth drilling system with strong pressure resistance. Background Technology

[0002] Drilling or exploration utilizes deep drilling mechanical engineering technology to extract natural resources from the earth's surface or seabed, or to obtain geological profiles and physical samples for experiments to obtain relevant data. Core sampling is often used for exploration operations. However, during core sampling, because the core is located inside the drill pipe, the coolant mixes with the magma drilled by the drill bit. This can easily clog the return water used for cooling, increasing the pressure inside the drill pipe and affecting drilling operations. Furthermore, it is inconvenient to cut and extract the drilled core. Therefore, a stable deep-earth drilling system with strong pressure resistance is proposed. Summary of the Invention

[0003] To address the technical problem that core samples are prone to clogging the cooling return water during drilling, increasing the pressure inside the drill pipe and affecting drilling operations, while also making it inconvenient to cut and extract the drilled core samples, this invention provides a stable deep-earth drilling system with strong pressure resistance.

[0004] The present invention is achieved by the following technical solution: a stable deep-earth drilling system with strong compressive strength, including a support frame, a lifting frame slidably connected to the support frame, a top drive assembly set on the lifting frame, an intermediate docking assembly set at the bottom of the top drive assembly and connected in sequence, and a drilling assembly fixed to the bottom of the bottom intermediate docking assembly.

[0005] The intermediate docking assembly includes a ring-shaped main body. Two sets of movable connecting pipes symmetrically arranged along their axes are slidably fitted onto the main body. Each set of movable connecting pipes has a placement groove (I) on the top of the main body on the side furthest from each other. The placement groove (I) is slidably connected to a connecting mechanism. The inner ring of the main body has an alternating ring-shaped sliding groove (I) and an installation groove (I). Placement grooves (II) are formed on the inner walls of both sides of the sliding groove (I). Placement grooves (II) are slidably connected to clamping and adjusting mechanisms (I) connected to the movable connecting pipes. A single clamping mechanism (I) slidably connected to the sliding groove (I) is fixed between the two sets of clamping and adjusting mechanisms (I). Placement grooves (III) are formed on the inner walls of both sides of the installation groove (I). Each set of placement grooves (III) is fitted with a clamping and adjusting mechanism (II) connected to the movable connecting pipes. A single clamping mechanism (II) fixed to the installation groove (I) is fixed between the two sets of clamping and adjusting mechanisms (II). The main body has an infusion channel (I) and an infusion channel (II) arranged along its length. Buffer grooves are formed at the bottom of the main body on the side furthest from each other on the side furthest from each other.

[0006] Using the above technical solution, the support frame 1 is hoisted and transported to the drilling position. Then, the main body 41 of the intermediate docking component 4, which is equipped with the drilling component 5, is connected to the top drive component 3. Then, the drilling operation is started. The first intermediate docking component 4 is disassembled from the top drive component 3. Then, the drilling is extended by adding intermediate docking components 4. During drilling, the state of the drilling component 5 is adjusted by the top drive component 3 according to the drilling needs. The drilled core is cut off. Then, the cut core is gradually removed from the borehole by the top drive component 3 using a clamping and pushing method.

[0007] The main body 41 is conveyed upward from the inner ring of the clamping ring 39 and docked with the connecting pipe 31. Then, the movable connecting pipe 43 on the main body 41 is connected to the drive rod 34 using the connecting mechanism 6. At this time, the insertion rod at the bottom of the drive rod 34 extends into the insertion groove at the top of the movable connecting pipe 43. Then, using an auxiliary tool, such as a screwdriver, the tool is inserted into the insertion groove located on the connecting mechanism 6 and the adjusting screw is rotated. Under the action of the thread, the adjusting screw extends into the interior of the main body 41. The turntable drives the push-pull plate 61 to move towards the movable connecting pipe 43. At this time, the position... The plug plate 63 at the bottom of the push-pull plate 61 extends into the first docking groove on the movable connecting pipe 43, and the plug plate 63 at the top of the push-pull plate 61 extends into the third docking groove at the bottom of the drive rod 34. At this time, the drive rod 34 can drive the movable connecting pipe 43 to move up and down and rotate synchronously. Then, the locking nut is used to fasten the main body 41 to the connecting pipe 31 and the clamping ring 39. At this time, the infusion channel three on the connecting pipe 31 is connected to the infusion channel one on the main body 41, and the infusion channel four on the connecting pipe 31 is connected to the infusion channel two on the main body 41.

[0008] As a further improvement to the above solution, the clamping and adjusting mechanism one includes a cover that is slidably connected to the placement groove two, and one side of the opening of the cover is fixedly connected to the clamping mechanism one. An adjusting unit one is provided on the inner side wall of the cover, and the adjusting unit one is slidably connected to the adapter unit one that is movably connected to the bottom of the cover.

[0009] As a further improvement to the above solution, the adjustment unit one includes a retaining groove one, an adjustment groove one and a retaining groove two arranged sequentially from top to bottom on the inner side wall of the cover. The retaining groove one and the retaining groove two are arranged along the length direction of the main body, and the adjustment groove one is inclined downward along the clamping mechanism one towards the clamping adjustment mechanism one.

[0010] As a further improvement to the above solution, the first adapter unit includes a sleeve that is movably fitted onto the inner wall of the bottom of the cover. A gear is fixedly fitted onto the outer ring of the sleeve, and a push-pull rod is threaded onto the inner ring of the sleeve. A buffer rod is fixedly connected to one end of the push-pull rod that extends out of the top of the sleeve, and a buffer rod is slidably fitted onto the other end of the buffer rod. A pressing plate that is slidably fitted onto the cover is slidably connected to the other end of the connecting tube. An adjusting shaft that is slidably connected to the first adjusting unit is fixedly connected to the connecting tube. A gear is engaged on one side of the gear and fixedly fitted onto the movable connecting tube.

[0011] As a further improvement to the above solution, the clamping and adjusting mechanism 2 includes an adjusting unit 2 opened on the inner side wall of the placement slot 3, and the adjusting unit 2 is slidably connected to a transfer unit 2 that is movably connected to the bottom of the placement slot 3.

[0012] As a further improvement to the above solution, the adjustment unit 2 includes an adjustment groove 2, a holding groove 3 and an adjustment groove 3 arranged sequentially from top to bottom on the inner side wall of the placement groove 3. The holding groove 3 is arranged along the length of the main body. The adjustment groove 2 is inclined upward along the clamping mechanism 2 towards the clamping adjustment mechanism 2. The adjustment groove 3 is inclined downward along the clamping mechanism 2 towards the clamping adjustment mechanism 2.

[0013] As a further improvement to the above solution, the clamping mechanism one includes a ring-shaped storage cover that is slidably connected to the sliding groove one, and the storage cover is fixedly connected to the clamping adjustment mechanism one. An annular airbag is fixedly sleeved at the inner ring opening of the storage cover. The inner ring of the airbag is fixedly connected to a clamping plate arranged sequentially along its circumferential direction. The top and bottom of the clamping plate are both fixedly connected to an extension plate that is slidably connected to the inner sidewall of the storage cover. The clamping mechanism one has the same structure as the clamping mechanism two. The storage cover of the clamping mechanism two is fixedly sleeved to the mounting groove one.

[0014] Through the above technical solution, the movable connecting pipe 43 drives the second gear to rotate, and then the first gear rotates, causing the sleeve 21 to rotate. When the sleeve 21 rotates, the push-pull rod 22 moves upward. When the push-pull rod 22 moves upward, the buffer rod moves upward, which in turn drives the connecting pipe 24 to move upward. When the connecting pipe 24 moves upward, the adjusting shaft 23 slides along the adjusting unit 1 72 and the adjusting unit 2 91, thereby adjusting the relative position between the extrusion plate 25 and the airbag 82. Initially, the adjusting shaft 23 of the adapter unit 1 73 is located at the bottom of the retaining groove 2 at the bottom of the adjusting unit 1 72. The adjustment shaft 23 of unit 2 92 is located at the bottom of the adjustment groove 3 at the bottom of the adjustment unit 2 91. When the adjustment shaft 23 slides upward along the adjustment groove 3, the adjustment shaft 23 moves towards the airbag 82, driving the extrusion plate 25 to extrude gas into the airbag 82, causing the airbag to expand. Then the clamping plate 83 on the airbag 82 clamps the sample core. At this time, the clamping mechanism 1 8 does not clamp the sample core, while the clamping mechanism 2 10 clamps the sample core. According to the same principle, when the adjustment shaft 23 moves upward, the clamping mechanism 1 8 and the clamping mechanism 2 10 clamp the sample core according to the clamping and conveying requirements.

[0015] As a further improvement to the above solution, the connecting mechanism includes a push-pull plate that is slidably connected to the placement groove. The side of the push-pull plate away from the movable connecting pipe has a slide groove with a T-shaped cross-section that is arranged along its length. A turntable is slidably connected inside the slide groove. An adjusting screw that is threadedly connected to the main body is movably sleeved on the turntable. Two sets of U-shaped plug-in plates are fixedly connected to the side of the push-pull plate near the movable connecting pipe.

[0016] Through the above technical solution, the insertion rod at the bottom of the drive rod 34 extends into the insertion groove at the top of the movable connecting tube 43. Then, using an auxiliary tool, such as a screwdriver, it extends into the insertion groove located on the connecting mechanism 6. The adjusting screw is rotated, and under the action of the thread, the adjusting screw extends into the interior of the main body 41. The turntable drives the push-pull plate 61 to move towards the movable connecting tube 43. At this time, the insertion plate 63 at the bottom of the push-pull plate 61 extends into the first docking groove on the movable connecting tube 43, and the insertion plate 63 at the top of the push-pull plate 61 extends into the third docking groove at the bottom of the drive rod 34. At this time, the drive rod 34 can drive the movable connecting tube 43 to perform synchronous up-down and rotational movements.

[0017] As a further improvement to the above solution, the top drive assembly includes a connecting pipe that is movably sleeved with the lifting frame, a drive mechanism that is fixedly sleeved on the outer ring of the connecting pipe and connected to the lifting frame, a distribution plate with an annular structure that is slidably sleeved on the top of the connecting pipe, two sets of drive rods that are slidably sleeved on the connecting pipe, one end of the two sets of drive rods extending out of the connecting pipe and connected to the same push-pull drive mechanism, a clamping ring with an annular structure set at the bottom of the connecting pipe, a driven plate that is fixedly sleeved on the outer ring of the clamping ring, a driven mechanism that is fixedly connected to both sides of the top of the driven plate and fixedly connected to the connecting pipe, a push plate I that is slidably sleeved on the outer ring of the driven plate, and a push unit I that is fixedly connected to both sides of the top of the push plate I and fixedly connected to the lifting frame. The connecting pipe has an infusion channel III and an infusion channel IV that are arranged along its length.

[0018] Through the above technical solution, the second push unit 19 on the push-pull drive mechanism 33 on the lifting frame 2 is started. The second push unit 19 drives the second push plate 18 to move up and down. The second push plate 18 drives the first connecting plate 17 to move. Then the first connecting plate 17 drives the sleeve 16 connected to it to move. When the sleeve 16 moves, the driven shaft 15 rotates under the action of the thread. Then the fifth gear rotates, thereby driving the second gear ring to rotate. Then the adapter ring 13 rotates. Then the drive rod 34 rotates under the action of the first gear ring and the fourth gear 14. When the drive rod 34 rotates, the clamping state of the clamping mechanism 18 and the clamping mechanism 2 10 located in the inner ring of the main body 41 is adjusted.

[0019] When clamping and conveying the sample core, clamping mechanism 2 10 first clamps the sample core, then clamping mechanism 1 8 clamps the sample core. After that, clamping mechanism 2 10 releases the clamp, and the push-pull drive mechanism 33 raises clamping mechanism 1 8, lifting the clamped sample core upward. After the lifting is completed, clamping mechanism 2 10 clamps the sample core again. Then clamping mechanism 1 8 releases the clamp and moves downward to the initial position. Then clamping mechanism 1 8 clamps the sample core again. This process is repeated to gradually clamp and lift the sample core upward for sampling.

[0020] As a further improvement to the above solution, the drilling assembly includes a ring-shaped tool mounting plate fixedly connected to the bottom main body, a transition groove opened on both sides of the top of the tool mounting plate and connected to the buffer groove, and a ring-shaped conversion cavity one and a conversion cavity two reserved inside the tool mounting plate. The top of the conversion cavity one is provided with a connecting channel one connected to the infusion channel one. The inner ring of the tool mounting plate is provided with a spray hole connected to the conversion cavity one. The top of the conversion cavity two is provided with a connecting channel two connected to the infusion channel two. The inner ring of the tool mounting plate is provided with a pushing channel connected to the conversion cavity one. A push rod is slidably sleeved on the pushing channel. One end of the push rod extending out of the opening of the pushing channel is fixedly connected to an end cutter. The bottom of the end cutter is fixedly connected to a movable cutter that is slidably connected to the bottom of the tool mounting plate. A fixed cutter that is fixedly connected to the bottom of the tool mounting plate is installed on one side of the movable cutter.

[0021] Through the above technical solution, the coolant input from the pipe at the top of the distribution plate 32 enters the transfer channel 1, then enters the liquid delivery channel 3 on the connecting pipe 31, and then enters the liquid delivery channel 1 on the main body 41. After that, it enters the conversion chamber 53 along the connecting channel 1, and finally is sprayed into the inner ring of the tool mounting plate 51 from the spray hole 54, and then cools the tool downwards.

[0022] The power fluid used to drive the drilling assembly 5 for adjustment is input from pipe 2, and then enters the conversion chamber 2 55 through the fluid infusion channel 4, fluid infusion channel 2, and connecting channel 2. Then, the push rod 55 is pushed to move, and at this time, the end cutter 58 moves towards the core sample to cut the core sample.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] 1. This invention uses a unit docking method for connection and installation, which facilitates drilling operations and is suitable for drilling operations at different depths. During the drilling process, coolant is sprayed from the inner ring position above the drill bit to quickly cool the drill bit, effectively protect the drill bit safety, and improve drilling efficiency and stability.

[0025] 2. This invention can cut the drilled core according to drilling needs, and can quickly remove the cut core from the borehole without removing the drill rod, which facilitates subsequent drilling operations.

[0026] 3. This invention facilitates the flow of coolant after the core sample is removed, preventing the core sample from clogging the backflowing coolant, effectively avoiding drill pipe blockage in the borehole, improving drilling safety, and facilitating drilling and core extraction operations. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 A schematic diagram of the structure of the intermediate docking assembly provided by the present invention;

[0029] Figure 3 This is a partially enlarged structural schematic diagram provided by the present invention;

[0030] Figure 4 A schematic diagram of the connecting mechanism provided by the present invention;

[0031] Figure 5 A schematic diagram of the top drive mechanism provided by the present invention;

[0032] Figure 6 This is a schematic diagram of the drilling assembly provided by the present invention;

[0033] Figure 7 A schematic diagram of the push-pull drive mechanism provided by the present invention.

[0034] Explanation of key symbols:

[0035] 1. Support frame; 2. Lifting frame; 3. Top drive mechanism; 4. Intermediate docking assembly; 5. Drilling assembly; 6. Connecting mechanism; 7. Clamping and adjusting mechanism one; 8. Clamping mechanism one; 9. Clamping and adjusting mechanism two; 10. Clamping mechanism two; 21. Sleeve; 22. Push-pull rod; 23. Adjusting shaft; 24. Connecting pipe; 25. Extrusion plate; 31. Connecting pipe; 32. Distribution plate; 33. Push-pull drive mechanism; 34. Drive rod; 36. Drive mechanism; 37. Driven mechanism; 38. Driven plate; 39. Clamping ring; 310. Push plate one; 311. Pushing unit one; 41. Main body; 42. Placement slot one. 43 Movable connecting pipe, 44 Sliding groove one, 45 Mounting groove one, 46 Placement groove two, 47 Placement groove three, 51 Tool mounting plate, 52 Adapter groove, 53 Conversion chamber one, 54 Spray hole, 55 Conversion chamber two, 56 Push channel, 57 Top rod, 58 End cutter, 59 Movable cutter, 510 Fixed cutter, 61 Push-pull plate, 62 Sliding groove one, 63 Insertion plate, 71 Cover, 72 Adjustment unit one, 73 Adapter unit one, 81 Storage cover, 82 Airbag, 83 Clamping plate, 84 Extension plate, 91 Adjustment unit two, 92 Adapter unit two. Detailed Implementation

[0036] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0037] Example 1:

[0038] Please combine Figures 1-7 This embodiment of a stable deep-earth drilling system with strong compressive strength includes a support frame 1, a lifting frame 2 slidably connected to the support frame 1, a top drive assembly 3 set on the lifting frame 2, an intermediate docking assembly 4 set at the bottom of the top drive assembly 3 and connected in sequence, and a drilling assembly 5 fixedly connected to the bottom of the bottom intermediate docking assembly 4. A push unit 4 fixedly connected to the lifting frame 2 is fixedly connected to the support frame 1.

[0039] The intermediate docking assembly 4 includes a ring-shaped main body 41. Two sets of movable connecting tubes 43, symmetrically arranged along their axes, are slidably fitted onto the main body 41. Each set of movable connecting tubes 43 has a placement groove 42 on the top of the main body 41 on the side furthest from each other. A connecting mechanism 6 is slidably connected to the placement groove 42. The inner ring of the main body 41 has staggered ring-shaped sliding grooves 44 and mounting grooves 45. Placement grooves 46 are formed on the inner walls of both sides of the sliding grooves 44. Clamping and adjusting mechanisms 7, connected to the movable connecting tubes 43, are slidably connected to the placement grooves 46. The clamping adjustment mechanism 17 is fixedly connected to the same clamping mechanism 8 which is slidably connected to the sliding groove 44. The inner sidewalls of the two sides of the mounting groove 45 are provided with placement grooves 3 47. Both placement grooves 3 47 are equipped with clamping adjustment mechanism 2 9 which is connected to the movable connecting pipe 43. The clamping adjustment mechanism 2 9 is fixedly connected to the same clamping mechanism 2 10 which is fixedly connected to the mounting groove 45. The main body 41 has an infusion channel 1 and an infusion channel 2 arranged along its length. The bottom of the two movable connecting pipes 43 on the side away from each other is provided with a buffer groove at the bottom of the main body 41.

[0040] The implementation principle of a stable deep-earth drilling system with strong compressive strength in this application embodiment is as follows: the support frame 1 is hoisted and transported to the drilling position, and then the main body 41 of the intermediate docking component 4 with the drilling component 5 is connected to the top drive component 3. Then, the drilling operation is started. As the drilling operation proceeds downward, the first intermediate docking component 4 is separated from the top drive component 3. Then, the drilling is extended by adding intermediate docking components 4. During drilling, the state of the drilling component 5 is adjusted by the top drive component 3 according to the drilling needs. The drilled core is cut off. Then, the cut core is gradually removed from the borehole by the top drive component 3 using a clamping and pushing method.

[0041] Example 2:

[0042] Based on embodiment 1, the further improvement of this embodiment is that: the clamping adjustment mechanism 7 includes a cover 71 that is slidably connected to the placement groove 46, and one side of the opening of the cover 71 is fixedly connected to the clamping mechanism 8. An adjustment unit 72 is provided on the inner side wall of the cover 71, and the adjustment unit 72 is slidably connected to the adapter unit 73 that is movably connected to the bottom of the cover 71.

[0043] Adjustment unit 72 includes a retaining groove 1, an adjustment groove 1 and a retaining groove 2 arranged sequentially from top to bottom on the inner side wall of the cover 71. The retaining groove 1 and the retaining groove 2 are arranged along the length direction of the main body 41, and the adjustment groove 1 is inclined downward along the clamping mechanism 8 towards the clamping adjustment mechanism 7.

[0044] The first adapter unit 73 includes a sleeve 21 that is movably fitted onto the inner side wall of the bottom of the cover 71. A gear 1 is fixedly fitted onto the outer ring of the sleeve 21. A push-pull rod 22 is threaded onto the inner ring of the sleeve 21. A buffer rod is fixedly connected to one end of the push-pull rod 22 that extends out of the top of the sleeve 21. A connecting tube 24 is slidably fitted onto the other end of the buffer rod. A pressing plate 25 that is slidably fitted onto the cover 71 is slidably connected to the other end of the connecting tube 24. An adjusting shaft 23 that is slidably connected to the first adjustment unit 72 is fixedly fitted onto the connecting tube 43. A gear 2 that is fixedly fitted onto the movable connecting tube 43 is meshed on one side of the gear 1.

[0045] The clamping adjustment mechanism 29 includes an adjustment unit 291 opened on the inner side wall of the placement slot 3 47. The adjustment unit 291 is slidably connected to a transfer unit 292 that is movably connected to the bottom of the placement slot 3 47. The transfer unit 1 73 has the same structure as the transfer unit 292.

[0046] Adjustment unit 2 91 includes adjustment groove 2, holding groove 3 and adjustment groove 3 arranged sequentially from top to bottom on the inner side wall of placement groove 3 47. The holding groove 3 is arranged along the length direction of the main body 41. The adjustment groove 2 is inclined upward along the clamping mechanism 2 10 towards the clamping adjustment mechanism 2 9. The adjustment groove 3 is inclined downward along the clamping mechanism 2 10 towards the clamping adjustment mechanism 2 9.

[0047] The clamping mechanism 18 includes a ring-shaped storage cover 81 that is slidably connected to the sliding groove 44. The storage cover 81 is fixedly connected to the clamping adjustment mechanism 7. An annular airbag 82 is fixedly sleeved at the inner opening of the storage cover 81. The inner ring of the airbag 82 is fixedly connected to a clamping plate 83 arranged sequentially along its circumferential direction. The top and bottom of the clamping plate 83 are both fixedly connected to an extension plate 84 that is slidably connected to the inner side wall of the storage cover 81. The side of the airbag 82 that extends into the storage cover 81 has a through-hole that passes through the airbag 82 and the storage cover 81. The clamping mechanism 18 has the same structure as the clamping mechanism 210. The storage cover 81 of the clamping mechanism 210 is fixedly sleeved to the mounting groove 45.

[0048] The connecting mechanism 6 includes a push-pull plate 61 that is slidably connected to the placement groove 42. The side of the push-pull plate 61 away from the movable connecting pipe 43 has a slide groove 62 with a T-shaped cross-section that is arranged along its length. A turntable is slidably connected inside the slide groove 62. An adjusting screw that is threadedly connected to the main body 41 is movably sleeved on the turntable. An inwardly recessed insertion groove is opened at the end of the adjusting screw that extends out of the outer wall of the main body 41. Two sets of U-shaped plug-in plates 63 are fixedly connected to the side of the push-pull plate 61 near the movable connecting pipe 43.

[0049] Example 3:

[0050] This embodiment, based on Embodiment 1, further improves upon the following: the top drive assembly 3 includes a connecting pipe 31 movably sleeved with the lifting frame 2, a drive mechanism 36 fixedly sleeved on the outer ring of the connecting pipe 31 and connected to the lifting frame 2, a distribution plate 32 of an annular structure slidably sleeved on the top of the connecting pipe 31, two sets of drive rods 34 slidably sleeved on the connecting pipe 31, one end of the two sets of drive rods 34 extending out of the connecting pipe 31 connected to the same push-pull drive mechanism 33, a clamping ring 39 of an annular structure disposed at the bottom of the connecting pipe 31, and a clamping ring 39 fixedly sleeved on the clamping ring 39. The outer ring includes a driven plate 38, a driven mechanism 37 fixed to the top two sides of the driven plate 38 and fixed to the connecting pipe 31, a push plate 310 slidably sleeved on the outer ring of the driven plate 38, and a push unit 311 fixed to the top two sides of the push plate 310 and fixed to the lifting frame 2. The connecting pipe 31 has a three-way infusion channel and a four-way infusion channel arranged along its length. The bottom inner ring of the connecting pipe 31 has a first docking groove with an annular structure. The top outer ring of the main body 41 has a first insertion groove with an annular structure. The bottom inner ring of the main body 41 has a second docking groove with an annular structure.

[0051] The drive mechanism 36 includes a gear ring fixedly sleeved with the outer ring of the connecting pipe 31, a gear three meshing with the outer ring of the gear ring, a rotating shaft fixedly sleeved with the inner ring of the gear three and movably sleeved with the lifting frame 2, and a motor one installed at one end of the rotating shaft extending out of the lifting frame 2.

[0052] The push-pull drive mechanism 33 includes a ring-shaped support plate 11 disposed on the top of the lifting frame 2, a ring-shaped rotating plate 12 slidably sleeved on the inner ring of the support plate 11, a ring-shaped adapter ring 13 movably sleeved on the bottom of the rotating plate 12, a gear ring 1 fixedly sleeved on the inner ring of the adapter ring 13, a gear 4 14 meshing on one side of the gear ring 1 and fixedly sleeved on the drive rod 34, a gear ring 2 fixedly sleeved on the outer ring of the adapter ring 13, a gear 5 meshing on one side of the gear ring 2, and a driven gear fixedly sleeved on the inner ring of the gear 5 and movably sleeved on the rotating plate. Shaft 15, sleeve 16 threadedly connected to the outer ring of the rotating plate extending from the driven shaft 15, connecting plate 17 with an annular structure fixed to the top of sleeve 16, push plate 2 with an annular structure slidably connected to the outer ring of connecting plate 17, push unit 2 19 fixedly connected to the bottom ends of push plate 2 18 and fixedly connected to bearing plate 11, push unit 3 110 fixedly connected to the bottom ends of bearing plate 11 and fixedly connected to lifting frame 2, drive rod 34 movably connected to rotating plate 12, and multiple sets of limiting rods slidably connected to connecting plate 17 fixedly connected to the top of rotating plate 12.

[0053] The driven mechanism 37 includes a crossbar fixedly connected to the outer ring of the connecting pipe 31, a guide sleeve fixedly connected to the other end of the crossbar, and a guide rod slidably connected to the bottom of the guide sleeve and fixedly connected to the driven plate 38.

[0054] The bottom of the distribution plate 32 is provided with a ring-shaped transfer channel 1 and a transfer channel 2 arranged along its diameter. The infusion channel 3 is connected to the transfer channel 1, the transfer channel 2 is connected to the infusion channel 4, and the distribution plate 32 is fixedly connected to a pipe 1 connected to the transfer channel 1 and a pipe 2 connected to the transfer channel 2.

[0055] The top outer ring of the movable connecting tube 43 has a first annular connecting groove, the bottom outer ring of the movable connecting tube 43 has a second annular connecting groove, and the bottom outer ring of the drive rod 34 has a third annular connecting groove. Connecting grooves 1, 2 and 3 are engaged with the adjacent plug plate 63. The bottom of the drive rod 34 is fixedly connected to a first plug rod with a regular polygonal cross-section. The top of the movable connecting tube 43 has a plug groove, and the bottom of the movable connecting tube 43 is fixedly connected to a second plug rod. The cross-sections of the first plug rod, the second plug rod and the plug groove are the same.

[0056] Push unit 1 (311), push unit 2 (19), push unit 3 (110) and push unit 4 all use push rod motors, and liquid pumps and solenoid valves are installed on pipe 1 and pipe 2.

[0057] Example 4:

[0058] The drilling assembly 5 includes a ring-shaped tool mounting plate 51 fixedly connected to the bottom main body 41, a transition groove 52 opened on both sides of the top of the tool mounting plate 51 and connected to the buffer groove, and a ring-shaped conversion cavity 1 53 and conversion cavity 2 55 reserved inside the tool mounting plate 51. The top of the conversion cavity 1 53 is provided with a connecting channel 1 connected to the infusion channel 1. The inner ring of the tool mounting plate 51 is provided with a spray hole 54 connected to the conversion cavity 1 53. The top of the conversion cavity 2 55 is provided with a connecting channel 2 connected to the infusion channel 2. The inner ring of the tool mounting plate 51 is provided with a pushing channel 56 connected to the conversion cavity 1 53. A push rod 57 is slidably sleeved on the pushing channel 56. One end of the push rod 57 extending out of the opening of the pushing channel 56 is fixedly connected to an end cutter 58. The bottom of the end cutter 58 is fixedly connected to a movable cutter 59 that is slidably connected to the bottom of the tool mounting plate 51. A fixed cutter 510 fixedly connected to the bottom of the tool mounting plate 51 is installed on one side of the movable cutter 59.

[0059] Working principle:

[0060] During drilling operations, the support frame 1 is hoisted and transported to the drilling location. Then, the main body 41 of the intermediate docking assembly 4, which is equipped with the drilling component 5, is connected to the top drive assembly 3. Drilling operations then begin. As the drilling progresses downward, the first intermediate docking assembly 4 is disassembled from the top drive assembly 3. The drilling is then extended by adding intermediate docking assemblies 4. During drilling, the state of the drilling component 5 is adjusted using the top drive assembly 3 as needed. The drilled core is then cut off. Afterward, the cut core is gradually removed from the borehole by clamping and pushing using the top drive assembly 3.

[0061] When the intermediate docking assembly 4 docks with the top drive assembly 3, the main body 41 is first conveyed upward from the inner ring of the clamping ring 39 to dock with the docking pipe 31. Then, the connecting mechanism 6 connects the movable connecting pipe 43 on the main body 41 with the drive rod 34. At this time, the insertion rod at the bottom of the drive rod 34 extends into the insertion groove at the top of the movable connecting pipe 43. Then, using an auxiliary tool, such as a screwdriver, the tool is inserted into the insertion groove located on the connecting mechanism 6. The adjusting screw is rotated, and under the action of the thread, the adjusting screw extends into the interior of the main body 41. The turntable drives the push-pull plate 61 to move towards the movable connecting pipe 34. When the connecting tube 43 moves in the direction, the plug plate 63 at the bottom of the push-pull plate 61 extends into the first docking groove on the movable connecting tube 43, and the plug plate 63 at the top of the push-pull plate 61 extends into the third docking groove at the bottom of the drive rod 34. At this time, the drive rod 34 can drive the movable connecting tube 43 to move up and down and rotate synchronously. Then, the locking nut is used to fasten the main body 41 to the connecting tube 31 and the clamping ring 39. At this time, the infusion channel three on the connecting tube 31 is connected to the infusion channel one on the main body 41, and the infusion channel four on the connecting tube 31 is connected to the infusion channel two on the main body 41.

[0062] During drilling, the drive unit 4 on the support frame 1 is activated, driving the lifting frame 2 to move downward. At this time, under the action of the drive mechanism 36, the connecting pipe 31 is rotated, and then the main body 41 connected to it rotates accordingly. The drilling assembly 5 at the bottom of the main body 41 rotates to carry out drilling operations. The motor 1 on the drive mechanism 36 is activated and the gear 3 rotates, and then the gear ring rotates, thereby causing the connecting pipe 31 to rotate. At this time, the coolant input from the pipe 1 at the top of the distribution plate 32 enters the transfer channel 1, then enters the liquid delivery channel 3 on the connecting pipe 31, and then enters the liquid delivery channel 1 on the main body 41. After that, it enters the conversion chamber 53 along the connecting channel 1, and finally is sprayed into the inner ring of the tool mounting plate 51 from the spray hole 54, and then cools the tool downward.

[0063] Subsequently, as the fourth push unit continues to operate, the lifting frame 2 moves downward, causing the drilling assembly 5 to move downward to perform drilling operations. The drilled core is located in the inner ring of the tool mounting plate 51 and the main body 41. As the drilling depth increases, when it is necessary to add the intermediate docking assembly 4, the intermediate docking assembly 4 is connected and the drilling operation is performed in sequence in the above manner.

[0064] When it is necessary to cut and remove the core sample drilled inside the borehole, firstly, the power fluid used to drive the drilling assembly 5 for adjustment is input from the second pipe, and then enters the conversion chamber 2 55 along the fourth infusion channel, the second infusion channel, and the second connecting channel. Then, the push rod 57 is pushed to move, and at this time the end cutter 58 moves towards the core sample to cut the core sample.

[0065] After the core sample is cut, the cut core sample needs to be extracted. At this time, the push unit 2 19 on the push-pull drive mechanism 33 on the lifting frame 2 is activated. The push unit 2 19 drives the push plate 2 18 to move up and down. The push plate 2 18 drives the connecting plate 17 to move. Then the connecting plate 17 drives the sleeve 16 connected to it to move. When the sleeve 16 moves, the driven shaft 15 rotates under the action of the thread. Then the gear 5 rotates, thereby driving the gear ring 2 to rotate. Then the adapter ring 13 rotates. Then the drive rod 34 rotates under the action of the gear ring 1 and the gear 4 14. When the drive rod 34 rotates, the clamping state of the clamping mechanism 1 8 and the clamping mechanism 2 10 located in the inner ring of the main body 41 is adjusted.

[0066] When clamping and conveying the sample core, clamping mechanism 2 10 first clamps the sample core, then clamping mechanism 1 8 clamps the sample core. After that, clamping mechanism 2 10 releases the clamp, and the push-pull drive mechanism 33 raises clamping mechanism 1 8, lifting the clamped sample core upward. After the lifting is completed, clamping mechanism 2 10 clamps the sample core again. Then clamping mechanism 1 8 releases the clamp and moves downward to the initial position. Then clamping mechanism 1 8 clamps the sample core again. The above steps are repeated to gradually clamp and lift the sample core upward for sampling.

[0067] When adjusting the clamping state of clamping mechanism 18 and clamping mechanism 210, the movable connecting tube 43 connected to the drive rod 34 rotates with the drive rod 34 and under the connection of the connecting mechanism 6. When the movable connecting tube 43 rotates, it drives the transfer unit 173 and transfer unit 292 to move simultaneously. Then, under the guidance of the adjustment unit 172 and adjustment unit 291, the inflation and deflation state of the airbag 82 is adjusted to realize the clamping and releasing operation of the sample core.

[0068] At this time, the movable connecting pipe 43 drives gear two to rotate, and then gear one rotates, causing sleeve 21 to rotate. When sleeve 21 rotates, push-pull rod 22 moves upward. When push-pull rod 22 moves upward, buffer rod moves upward, which in turn drives connecting pipe 24 to move upward. When connecting pipe 24 moves upward, adjusting shaft 23 slides along adjusting unit one 72 and adjusting unit two 91, thereby adjusting the relative position between extrusion plate 25 and airbag 82. Initially, adjusting shaft 23 of adapter unit one 73 is located at the bottom of retaining groove two at the bottom of adjusting unit one 72. The adjustment shaft 23 of 92 is located at the bottom of the adjustment groove 3 at the bottom of the adjustment unit 2 91. When the adjustment shaft 23 slides upward along the adjustment groove 3, the adjustment shaft 23 moves towards the airbag 82, driving the extrusion plate 25 to extrude gas into the airbag 82, causing the airbag to expand. Then the clamping plate 83 on the airbag 82 clamps the sample core. At this time, the clamping mechanism 1 8 does not clamp the sample core, while the clamping mechanism 2 10 clamps the sample core. According to the same principle, when the adjustment shaft 23 moves upward, the clamping mechanism 1 8 and the clamping mechanism 2 10 clamp the sample core according to the clamping and conveying requirements.

[0069] During upward transport, the push unit 3 110 on the lifting frame 2 is activated, driving the bearing plate 11 to move upward. Then, the rotating plate 12 drives the drive rod 34 to move upward, thereby pulling the sample core upward when the clamping mechanism 1 8 is clamping the sample core and the clamping mechanism 2 10 is not clamping the sample core. When the clamping mechanism 1 8 returns to the initial state, the push unit 3 110 is activated, and the bearing plate 11 moves downward. At this time, the clamping mechanism 1 8 does not clamp the sample core, and the clamping mechanism 2 10 clamps the sample core. The sample core is not clamped and does not move. The clamping mechanism 1 8 moves downward to return to the initial position.

[0070] This design employs a modular docking connection method for easy drilling operations, suitable for drilling at different depths. During drilling, coolant is sprayed from the inner ring above the drill bit to quickly cool it, effectively protecting the drill bit and improving drilling efficiency and stability. Simultaneously, it allows for the cutting of drilled core samples as needed, and the cut core can be quickly removed from the borehole without needing to pull out the drill rod, facilitating subsequent drilling operations. After core removal, coolant flow is facilitated, preventing core blockage and backflow, effectively avoiding drill rod blockage in the borehole, improving drilling safety, and simplifying drilling and core removal operations.

[0071] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A stable deep-earth drilling system with strong compressive strength, characterized in that, It includes a support frame, a lifting frame slidably connected to the support frame, a top drive assembly set on the lifting frame, an intermediate docking assembly set at the bottom of the top drive assembly and connected in sequence, and a drilling assembly fixed to the bottom of the bottom intermediate docking assembly; The intermediate docking assembly includes a ring-shaped main body. The main body is slidably fitted with two sets of movable connecting pipes symmetrically arranged along its axis. The top of the two sets of movable connecting pipes on the opposite side is provided with a placement groove 1 located on the top of the main body. The placement groove 1 is slidably connected to a connecting mechanism. The inner ring of the main body is provided with an alternating ring-shaped sliding groove 1 and an installation groove 1. The inner walls of both sides of the sliding groove 1 are provided with a placement groove 2. The placement groove 2 is slidably connected to a clamping and adjusting mechanism 1 connected to the movable connecting pipe. The two sets of clamping and adjusting mechanisms 1 are fixedly connected to the same clamping mechanism 1 that is slidably connected to the sliding groove 1. The inner walls of both sides of the installation groove 1 are provided with a placement groove 3. The two sets of placement groove 3 are each equipped with a clamping and adjusting mechanism 2 connected to the movable connecting pipe. The two sets of clamping and adjusting mechanisms 2 are fixedly connected to the same clamping mechanism 2 that is fixedly connected to the installation groove 1. The main body is permeated with an infusion channel 1 and an infusion channel 2 arranged along its length. The bottom of the two sets of movable connecting pipes on the opposite side is provided with a buffer groove located at the bottom of the main body. The clamping and adjusting mechanism includes a cover that is slidably connected to the placement groove 2, and one side of the opening of the cover is fixedly connected to the clamping mechanism 1. An adjusting unit 1 is provided on the inner side wall of the cover, and the adjusting unit 1 is slidably connected to the transfer unit 1 that is movably connected to the bottom of the cover. The clamping mechanism one includes a ring-shaped storage cover that is slidably connected to the sliding groove one, and the storage cover is fixedly connected to the clamping adjustment mechanism one. An annular airbag is fixedly sleeved at the inner ring opening of the storage cover. The inner ring of the airbag is fixedly connected to clamping plates arranged sequentially along its circumferential direction. The top and bottom of the clamping plates are both fixedly connected to extension plates that are slidably connected to the inner sidewall of the storage cover. The clamping mechanism one has the same structure as the clamping mechanism two. The storage cover of the clamping mechanism two is fixedly sleeved to the mounting groove one.

2. The stable deep-earth drilling system with strong compressive strength as described in claim 1, characterized in that, The adjustment unit includes a retaining groove 1, an adjustment groove 1, and a retaining groove 2 arranged sequentially from top to bottom on the inner side wall of the cover. The retaining groove 1 and the retaining groove 2 are arranged along the length of the main body, and the adjustment groove 1 is inclined downward along the clamping mechanism 1 towards the clamping adjustment mechanism 1.

3. The stable deep-earth drilling system with strong compressive strength as described in claim 1, characterized in that, The first adapter unit includes a sleeve that is movably fitted onto the inner side wall of the bottom of the cover. A gear is fixedly fitted onto the outer ring of the sleeve, and a push-pull rod is threaded onto the inner ring of the sleeve. A buffer rod is fixedly connected to one end of the push-pull rod that extends out of the top of the sleeve, and a connecting tube is slidably fitted onto the other end of the buffer rod. A pressing plate that is slidably fitted onto the cover is slidably connected to the other end of the connecting tube. An adjusting shaft that is slidably connected to the first adjusting unit is fixedly connected to the connecting tube. A gear is engaged on one side of the gear and fixedly fitted onto the movable connecting tube.

4. The stable deep-earth drilling system with strong compressive strength as described in claim 1, characterized in that, The clamping and adjusting mechanism 2 includes an adjusting unit 2 opened on the inner side wall of the placement slot 3, and the adjusting unit 2 is slidably connected to a transfer unit 2 that is movably connected to the bottom of the placement slot 3.

5. A stable deep-earth drilling system with strong compressive strength as described in claim 4, characterized in that, The second adjustment unit includes an adjustment groove 2, a holding groove 3 and an adjustment groove 3 arranged sequentially from top to bottom on the inner side wall of the placement groove 3. The holding groove 3 is arranged along the length of the main body. The adjustment groove 2 is inclined upward along the clamping mechanism 2 towards the clamping adjustment mechanism 2. The adjustment groove 3 is inclined downward along the clamping mechanism 2 towards the clamping adjustment mechanism 2.

6. A stable deep-earth drilling system with strong compressive strength as described in claim 1, characterized in that, The connecting mechanism includes a push-pull plate that is slidably connected to the placement groove. The side of the push-pull plate away from the movable connecting pipe has a slide groove with a T-shaped cross-section that is set along its length. A turntable is slidably connected inside the slide groove. An adjusting screw that is threadedly connected to the main body is movably sleeved on the turntable. Two sets of U-shaped plug-in plates are fixedly connected to the side of the push-pull plate near the movable connecting pipe.

7. A stable deep-earth drilling system with strong compressive strength as described in claim 1, characterized in that, The top drive assembly includes a connecting pipe that is movably sleeved with the lifting frame, a drive mechanism that is fixedly sleeved on the outer ring of the connecting pipe and connected to the lifting frame, a distribution plate with an annular structure that is slidably sleeved on the top of the connecting pipe, two sets of drive rods that are slidably sleeved on the connecting pipe, one end of the two sets of drive rods extending out of the connecting pipe and connected to the same push-pull drive mechanism, a clamping ring with an annular structure set at the bottom of the connecting pipe, a driven plate that is fixedly sleeved on the outer ring of the clamping ring, a driven mechanism that is fixedly connected to both sides of the top of the driven plate and fixedly connected to the connecting pipe, a push plate I that is slidably sleeved on the outer ring of the driven plate, and a push unit I that is fixedly connected to both sides of the top of the push plate I and fixedly connected to the lifting frame. The connecting pipe has an infusion channel III and an infusion channel IV that are arranged along its length.

8. A stable deep-earth drilling system with strong compressive strength as described in claim 1, characterized in that, The drilling assembly includes a ring-shaped tool mounting plate fixedly connected to the bottom main body, a transition groove opened on both sides of the top of the tool mounting plate and connected to the buffer groove, and a ring-shaped conversion cavity one and a conversion cavity two reserved inside the tool mounting plate. The top of the conversion cavity one has a connecting channel one connected to the infusion channel one. The inner ring of the tool mounting plate has a spray hole connected to the conversion cavity one. The top of the conversion cavity two has a connecting channel two connected to the infusion channel two. The inner ring of the tool mounting plate has a pushing channel connected to the conversion cavity one. A push rod is slidably sleeved on the pushing channel. One end of the push rod extending out of the opening of the pushing channel is fixedly connected to an end cutter. The bottom of the end cutter is fixedly connected to a movable cutter that is slidably connected to the bottom of the tool mounting plate. A fixed cutter that is fixedly connected to the bottom of the tool mounting plate is installed on one side of the movable cutter.

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