Novel elevator chuck slip unfreezing device

Abstract

The invention relates to a novel elevator chuck slip unfreezing device and belongs to the technical field of unfreezing, the novel elevator chuck slip unfreezing device comprises a main body, a first through hole is formed in the main body in a penetrating mode, the axis of the first through hole is vertically arranged, a first opening is formed in one side of the first through hole, and a converter is detachably and fixedly arranged in the through hole; a second through hole is formed in the converter in a penetrating mode, the axis of the second through hole is parallel to the axis of the first through hole, a second opening is formed in the side, close to the first opening, of the second through hole, and the width of the second opening is larger than or equal to the aperture of the second through hole. The chuck is lifted, under the condition of external force intervention, the tile body and the chuck are unclamped, the working efficiency is improved, in the unclamping process, the relative fixing effect between the pipe and the main body is improved through jacking of the jacking plate and adsorption of the arc-shaped groove, and the stability between the main body and the sleeve is improved through locking of the locking wheel on the sleeve.

Description

Technical Field

[0001] The invention relates to a novel hanging card chuck card unblocking device, belonging to the technical field of unblocking. Background Art

[0002] In the drilling industry, elevator chucks and slips are common terms that mainly refer to the lifting and connecting components in drilling equipment.

[0003] An elevator is a lifting tool, mainly used to lift drilling equipment or other heavy objects. In drilling operations, elevators are used to lift or lower components such as drill strings and drill bits from the wellhead, usually through lifting equipment (such as cranes or hoists). The elevators hold the equipment and play a fixing role, allowing the drilling equipment to be safely raised, lowered or replaced.

[0004] A chuck (usually referred to as a hanging chuck or mechanical chuck) is a tool used to clamp a drilling pipe (such as a drill pipe or drill bit). It fixes the drilling pipe at the wellhead by clamping it to prevent the pipe from loosening and ensure the stability of the operation. The chuck is mainly used to fix the drill tool or pipe during the drilling process, especially when the drill tool needs to be rotated or lifted to ensure that it does not move at the wellhead.

[0005] Slips are a component used to connect drilling tools, usually used to fix and connect the two ends of drill pipes or drilling tools. The function of slips is to ensure that the connection of drilling tools will not loosen, and at the same time provide sufficient strength to withstand the high pressure and large load in drilling operations. Slips are connected to the drilling pipe through threads to ensure the tightness of the connection of each drilling tool or pipe string to avoid loosening or falling off.

[0006] During drilling operations, it is often the case that the casing is stuck by the elevator, chuck or slip due to operator error, which requires a lot of time to handle and affects work efficiency.

[0007] Therefore, it is necessary to have a novel elevator, chuck and slip unblocking device to realize the unblocking of elevators, chucks and slips. Summary of the invention

[0008] The technical problem to be solved by the present invention is: in order to overcome the shortcomings of the prior art, a novel elevator, chuck and clip release device is provided to realize the release of elevators, chucks and clips.

[0009] The technical solution adopted by the present invention to solve the above-mentioned problem is: a novel elevator card chuck card disintegrating device, comprising a main body, a first through hole is provided on the main body, the axis of the first through hole is vertically arranged, a first opening is provided on one side of the first through hole, a converter is detachably fixedly provided in the through hole, a second through hole is provided on the converter, the axis of the second through hole is parallel to the axis of the first through hole, a second opening is provided on one side of the second through hole close to the first opening, the width of the second opening is greater than or equal to the aperture of the second through hole, a tightening mechanism is provided on the main body, and the tightening mechanism is located in the first opening; The tightening mechanism includes a valve and a tightening plate, wherein the tightening plate is located on a side of the valve close to the first through hole, the valve is detachably fixedly connected to the main body, and the tightening plate is connected to the valve via a moving member, and the moving member enables the tightening plate to move horizontally toward or away from the first through hole.

[0010] Preferably, both inner walls of the first opening are provided with slots, and the two ends of the valve are respectively inserted into the two slots, and the main body is positioned at the two ends of the valve by two pins.

[0011] Preferably, a connecting pipe is fixedly provided on one side of the tightening plate close to the valve, the connecting pipe is arranged horizontally, passes through the valve, two connecting pipes are provided, and the two connecting pipes are arranged side by side, a first tightening screw is threadedly connected to the valve, and the tightening end of the first tightening screw abuts against the side of the tightening plate close to the valve; The pressing plate is arc-shaped, and the inner arc surface of the pressing plate is arranged in a direction away from the valve; a flexible sealing layer is laid on the inner arc surface of the pressing plate.

[0012] Preferably, a movable plate is provided on the side of the valve away from the tightening plate, the cavity of the connecting tube extends to the side of the tightening plate away from the valve, a pressure regulating rod is coaxially inserted into the end of the connecting tube away from the tightening plate, the pressure regulating rod is slidably and sealingly connected to the connecting tube, the end of the regulating rod away from the valve is fixedly connected to the movable plate, a second tightening screw is threadedly connected to the valve, the tightening end of the second tightening screw abuts against the movable plate, and the movable plate is pushed to move in the direction away from the tightening plate by the second tightening screw.

[0013] Preferably, an arc-shaped groove is provided on a side of the tightening plate away from the valve, and the arc-shaped groove is connected to the connecting pipe.

[0014] Preferably, the main body is further provided with a plurality of locking mechanisms, which are circumferentially distributed around the axis of the first through hole; The locking mechanism includes a rotating shaft and a rotating frame, the rotating shaft passes through the rotating frame horizontally, the rotating shaft is rotatably connected to the rotating frame, a locking wheel is eccentrically fixedly arranged on the rotating shaft, the axis of the locking wheel is located above the rotating shaft, and the axis of the locking wheel is located on the side of the locking wheel axis close to the first through hole, two torsion springs are sleeved on the rotating shaft, the two torsion springs correspond to the two ends of the rotating shaft one by one, the two ends of the torsion spring are respectively connected to the rotating frame and the rotating shaft, and a translation system is arranged on the rotating frame, and the translation system enables the rotating frame to move toward or away from the axis of the first through hole.

[0015] Preferably, the translation system includes a screw rod, which is horizontally arranged and perpendicular to the rotating shaft. A fixed block is threadedly connected to the screw rod, and the fixed block is fixedly set on the main body. The fixed block and the screw rod are locked by two nuts, which are distributed along the length direction of the screw rod. The fixed block is located between the two nuts, and both nuts are against the fixed block.

[0016] Preferably, both sides of the main body extend outward to form a support portion, and the two support portions are detachably fixed with lifting ears, and the main body is provided with two groups of cushion blocks, and the two groups of cushion blocks correspond to the two support portions one by one; Each group of cushion blocks is provided with two cushion blocks, and the two cushion blocks in the same group are detachably fixedly connected from top to bottom, and the upper cushion block is detachably fixedly arranged at the bottom of the support portion.

[0017] Preferably, the top of the main body is concave to form a step with the first through hole, and a flange is provided outwardly on the top of the converter, the flange matches the step, and the flange is arranged inside the step; The top of the main body is at the same level as the top of the converter.

[0018] A card unlocking method comprises the following steps: Step 1: First, remove the upper guide plate and upper cover of the chuck. The chuck is a combination of an elevator and a slip. Step 2: Use a winch to install the unstuck device between the elevator and the chuck, wherein the elevator and the chuck are distributed up and down, a turntable is provided below the chuck, the casing vertically passes through the elevator, the chuck and the turntable in sequence, and the elevator and the chuck are both connected to the casing, the turntable is installed at the drilling position, and a lifting ring is connected to the elevator; Step 3: Place two jacks between the chuck and the card release device, and use the jacks to support the card release device; Step 4: Lift the elevator through the lifting ring and drive the chuck to be less than 50mm from the turntable surface; Step 5, operate the chuck air control valve to make the air control valve control slips in the open state; Step 6: Operate the jacks at the same time so that the top ends of the jacks extend upward; Step 7: Finally, the tile body and the chuck are released under the intervention of external force.

[0019] Compared with the prior art, the advantages of the present invention are: The present invention discloses a novel device for releasing the card from the card chuck of an elevator. The device improves the working efficiency by lifting the chuck and releasing the card body and the chuck under the intervention of external force. Moreover, during the releasing process, the relative fixing effect between the sleeve and the main body is improved by the tightening of the tightening plate and the adsorption of the arc groove, and the stability between the main body and the sleeve is improved by locking the sleeve with a locking wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of a novel elevator chuck card disassembly device of the present invention; Figure 2 It is an exploded view of a novel elevator chuck card disassembly device of the present invention; Figure 3 It is a front view of a novel elevator chuck card disassembly device of the present invention; Figure 4 It is a left view of a novel elevator chuck card disassembly device of the present invention; Figure 5 It is a top view of a novel elevator chuck card disassembly device of the present invention; Figure 6 It is a cross-sectional view of a novel elevator chuck card disassembly device of the present invention; Figure 7 The schematic diagram of the structure of the main body; Figure 8 is a schematic diagram of the structure of the converter; Fig. 9 It is a three-dimensional diagram of the tightening mechanism; Fig.10 is a cross-sectional view of the tightening mechanism; Fig.11 It is a schematic diagram of the connection structure between the clamping plate and the connecting pipe; Fig.12 for Fig.11 A cross-sectional view of Fig.13 is a three-dimensional diagram of the locking mechanism; Fig.14 is a cross-sectional view of the locking mechanism; Fig.15 The present invention is a structural schematic diagram of a novel elevator chuck chuck disassembly device in working state.

[0021] in: Main body 1, converter 2, jacking mechanism 3, locking mechanism 4, chuck 5, hanging card 6, turntable 7, sleeve 8, lifting ring 9, jack 10; A first through hole 101, a first opening 102, a support portion 103, a lifting ear 104, a cushion block 105, a step 106, and a slot 107; A second through hole 201, a second opening 202, and a flange 203; Valve 301, tightening plate 302, pin 303, connecting pipe 304, first tightening screw 305, moving plate 306, pressure regulating rod 307, second tightening screw 308, arc groove 309; Rotating shaft 401 , rotating frame 402 , locking wheel 403 , torsion spring 404 , screw rod 405 , fixing block 406 , nut 407 . DETAILED DESCRIPTION

[0022] like Figure 1-15 As shown, a novel elevator chuck card disintegrating device in this embodiment comprises a main body 1, a first through hole 101 is provided through the main body 1, the axis of the first through hole 101 is vertically arranged, a first opening 102 is provided on one side of the first through hole 101, a converter 2 is detachably fixedly arranged in the through hole, a second through hole 201 is provided through the converter 2, the axis of the second through hole 201 is parallel to the axis of the first through hole 101, a second opening 202 is provided on one side of the second through hole 201 close to the first opening 102, the width of the second opening 202 is greater than or equal to the aperture of the second through hole 201, a tightening mechanism 3 is provided on the main body 1, and the tightening mechanism 3 is located in the first opening 102; Both sides of the main body 1 extend outward to form a support portion 103, and the two support portions 103 are detachably fixed with lifting ears 4. Two groups of cushion blocks 105 are provided on the main body 1, and the two groups of cushion blocks 105 correspond to the two support portions 103 one by one; Each group of cushion blocks 105 is provided with two cushion blocks 105. The two cushion blocks 105 in the same group are detachably fixedly connected from top to bottom, and the upper cushion block 105 is detachably fixedly arranged at the bottom of the support portion 103; The top of the main body 1 is concave and forms a step 106 with the first through hole 101. The top of the converter 2 is provided with a flange 203 outwardly, and the flange 203 matches the step 106 and is arranged inside the step 106. The top of the main body 1 and the top of the converter 2 are at the same level; The tightening mechanism 3 includes a valve 301 and a tightening plate 302, wherein the tightening plate 302 is located on a side of the valve 301 close to the first through hole 101, the valve 301 is detachably fixedly connected to the main body 1, and the tightening plate 302 is connected to the valve 301 via a moving member, and the tightening plate 302 is horizontally moved toward or away from the first through hole 101 via the moving member; The inner walls of both sides of the first opening 102 are provided with slots 107, and the two ends of the valve 301 are respectively inserted into the two slots 107, and the main body 1 is positioned at the two ends of the valve 301 through two pins 303; A connecting pipe 304 is fixedly provided on one side of the tightening plate 302 close to the valve 301. The connecting pipe 304 is arranged horizontally and passes through the valve 301. Two connecting pipes 304 are provided and arranged side by side. A first tightening screw 305 is threadedly connected to the valve 301. The tightening end of the first tightening screw 305 abuts against the side of the tightening plate 302 close to the valve 301. The pressing plate 302 is arc-shaped, and the inner arc surface of the pressing plate 302 is arranged in a direction away from the valve 301; A flexible sealing layer (not shown in the figure) is laid on the inner arc surface of the tightening plate 302; A movable plate 306 is provided on the side of the valve 301 away from the tightening plate 302, the cavity of the connecting pipe 304 extends to the side of the tightening plate 302 away from the valve 301, a pressure regulating rod 307 is coaxially inserted into the end of the connecting pipe 304 away from the tightening plate 302, the pressure regulating rod 307 is slidably and sealedly connected to the connecting pipe 304, the end of the regulating rod away from the valve 301 is fixedly connected to the movable plate 306, a second tightening screw 308 is threadedly connected to the valve 301, the tightening end of the second tightening screw 308 abuts against the movable plate 306, and the movable plate 306 is pushed to move in the direction away from the tightening plate 302 by the second tightening screw 308; An arc groove 309 is provided on one side of the pressing plate 302 away from the valve 301, and the arc groove 309 is connected to the connecting pipe 304; The main body 1 is also provided with a plurality of locking mechanisms 4, which are distributed circumferentially with the axis of the first through hole 101 as the center; The locking mechanism 4 includes a rotating shaft 401 and a rotating frame 402. The rotating shaft 401 passes through the rotating frame 402 horizontally. The rotating shaft 401 is rotatably connected to the rotating frame 402. A locking wheel 403 is eccentrically fixedly arranged on the rotating shaft 401. The axis of the locking wheel 403 is located above the rotating shaft 401. The axis of the locking wheel 403 is located on the side of the axis of the locking wheel 403 close to the first through hole 101. The axis of the rotating shaft 401 is close to the locking wheel 4 The clamping angle between the plane determined by the axis of 03 and the horizontal plane where the axis of the rotating shaft 401 is located is less than 45 degrees, and two torsion springs 404 are sleeved on the rotating shaft 401, and the two torsion springs 404 correspond to the two ends of the rotating shaft 401 one by one, and the two ends of the torsion spring 404 are respectively connected to the rotating frame 402 and the rotating shaft 401, and the rotating frame 402 is provided with a translation system, and the translation system enables the rotating frame 402 to move toward or away from the axis of the first through hole 101; The translation system includes a screw rod 405, which is arranged horizontally and perpendicular to the rotation axis 401. A fixing block 406 is threadedly connected to the screw rod 405, and the fixing block 406 is fixedly arranged on the main body 1. The fixing block 406 and the screw rod 405 are locked by two nuts 407. The two nuts 407 are distributed along the length direction of the screw rod 405. The fixing block 406 is located between the two nuts 407, and the two nuts 407 are both against the fixing block 406. A card unlocking method comprises the following steps: Step 1: First, remove the upper guide plate and upper cover of the chuck 5. The chuck 5 is a combination of the hanging card 6 and the slips; Step 2, using a winch to install the unblocking device between the elevator 6 and the chuck 5, wherein the elevator 6 and the chuck 5 are distributed up and down, a turntable 7 is provided below the chuck 5, a casing 8 vertically passes through the elevator 6, the chuck 5 and the turntable 7 in sequence, and the elevator 6 and the chuck 5 are both connected to the casing 8, the turntable 7 is installed at the drilling position, and a lifting ring 9 is connected to the elevator 6; Release the pin 303 to separate the valve 301 from the main body 1, that is, remove the tightening mechanism 3 from the first opening 102; At the same time, the nut 407 is loosened to move the screw rod 405 on the fixing block 406 in a direction away from the axis of the first through hole 101; Subsequently, the lifting lug 4 is hoisted by a winch, and the device is lifted, and the main body 1 and the converter 2 are sleeved on the sleeve 8, that is, the sleeve 8 passes through the first opening 102 and the second opening 202 in sequence. In fact, the outer diameter of the sleeve 8 is equal to the inner diameter of the second through hole 201; Then, the clamping mechanism 3 is placed in the first opening 102, and the valve 301 is fixed on the main body 1 through the pin 303, and then the first clamping screw 305 is tightened, so that the first clamping screw 305 pushes the clamping plate to move toward the axis direction of the first through hole 101, and the inner arc surface of the clamping plate is fitted with the outer peripheral wall of the sleeve 8, that is, the relative fixation between the sleeve 8 and the main body 1 is achieved; Next, the second tightening screw 308 is rotated to make the second tightening screw 308 push the movable plate 306 to move away from the tightening plate 302, and drive the pressure regulating rod 307 to move synchronously in the connecting pipe 304, so that the air pressure in the connecting pipe 304 is reduced. Under the action of the air pressure, the tightening plate 302 is adsorbed on the outer peripheral wall of the sleeve 8, thereby improving the relative fixing effect between the sleeve 8 and the main body 1. Here, the arc groove 309 serves to increase the adsorption area; Next, push the screw 405 to make the locking wheel 403 abut against the outer wall of the sleeve 8, and then tighten the nut 407 to achieve relative fixation between the fixing block 406 and the screw 405, and then perform the unlocking action; Step 3, two jacks 10 are placed between the chuck 5 and the device, and the release device is supported by the jacks 10, and specifically, the pressing ends of the two jacks 10 are respectively against the two pads 105 below; Step 4, lift the elevator 6 through the lifting ring 9, and drive the chuck 5 to be less than 50mm from the turntable 7; Step 5, operate the air control valve of the chuck 5 to make the air control valve control slips in the open state; Step 6: Simultaneously operate the jack 10 so that the top end of the jack 10 extends upward; Step 7: Finally, the tile body and the chuck 5 are released under the intervention of external force; It should be noted that when the aperture of the first through hole 101 is equal to the outer diameter of the sleeve 8, the converter 2 is not required, that is, the sleeve 8 is directly attached to the inner wall of the first through hole 101; In addition, when the converter 2 is needed, before unblocking, select the converter of the corresponding size according to the size of the sleeve 8; Among them, the load of the device is 100US tons; Applicable casing 8 diameters are 14.3 / 8in, 18.5 / 8in and 20in; Card unlocking dimensions (length × width × height): 1500 × 765 × 210 mm; The specification of jack 10 is 50T; Here, during the unblocking process, when the sleeve 8 and the main body 1 move downward relative to each other, the locking wheel 403 rotates downward around the rotating shaft 401 through the friction force, resulting in an increase in the locking force of the locking wheel 403 on the sleeve 8, so that the sleeve 8 and the main body 1 continue to move relative to each other, thereby improving stability; In summary, by lifting the chuck 5 and disengaging the shoe body and the chuck 5 under the intervention of external force, the work efficiency is improved, and in the disengaging process, the relative fixing effect between the sleeve and the main body 1 is improved through the tightening of the tightening plate 302 and the adsorption of the arc groove 309, and the locking of the sleeve 8 by the locking wheel 403 improves the stability between the main body 1 and the sleeve 8.

[0023] In addition to the above embodiments, the present invention also includes other implementation modes. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. A novel elevator chuck card disassembly device, comprising a main body (1), characterized in that: The main body (1) is provided with a first through hole (101), the axis of the first through hole (101) is arranged vertically, a first opening (102) is arranged on one side of the first through hole (101), a converter (2) is detachably fixedly arranged in the through hole, a second through hole (201) is provided on the converter (2), the axis of the second through hole (201) is parallel to the axis of the first through hole (101), a second opening (202) is arranged on one side of the second through hole (201) close to the first opening (102), the width of the second opening (202) is greater than or equal to the aperture of the second through hole (201), and a tightening mechanism (3) is arranged on the main body (1), and the tightening mechanism (3) is located in the first opening (102); The tightening mechanism (3) comprises a valve (301) and a tightening plate (302); the tightening plate (302) is located on a side of the valve (301) close to the first through hole (101); the valve (301) is detachably fixedly connected to the main body (1); the tightening plate (302) is connected to the valve (301) via a moving part; and the tightening plate (302) is horizontally moved toward or away from the first through hole (101) via the moving part.

2. A novel elevator chuck card disassembly device according to claim 1, characterized in that: The inner walls on both sides of the first opening (102) are provided with slots (107), the two ends of the valve (301) are respectively inserted into the two slots (107), and the main body (1) is positioned at the two ends of the valve (301) through two pins (303).

3. A novel elevator chuck card disassembly device according to claim 1, characterized in that: A connecting pipe (304) is fixedly provided on one side of the tightening plate (302) close to the valve (301); the connecting pipe (304) is arranged horizontally and passes through the valve (301); two connecting pipes (304) are provided and the two connecting pipes (304) are arranged side by side; a first tightening screw (305) is threadedly connected to the valve (301); a tightening end of the first tightening screw (305) abuts against a side of the tightening plate (302) close to the valve (301); The pressing plate (302) is arc-shaped, and the inner arc-shaped surface of the pressing plate (302) is arranged in a direction away from the valve (301); a flexible sealing layer is laid on the inner arc-shaped surface of the pressing plate (302).

4. A novel elevator chuck card disassembly device according to claim 3, characterized in that: A movable plate (306) is provided on a side of the valve (301) away from the tightening plate (302); the cavity of the connecting tube (304) extends to a side of the tightening plate (302) away from the valve (301); a pressure regulating rod (307) is coaxially inserted into one end of the connecting tube (304) away from the tightening plate (302); the pressure regulating rod (307) is slidably and sealingly connected to the connecting tube (304); one end of the regulating rod away from the valve (301) is fixedly connected to the movable plate (306); a second tightening screw (308) is threadedly connected to the valve (301); the tightening end of the second tightening screw (308) abuts against the movable plate (306); and the movable plate (306) is pushed to move in a direction away from the tightening plate (302) by the second tightening screw (308).

5. A novel elevator chuck card disassembly device according to claim 4, characterized in that: An arc-shaped groove (309) is provided on one side of the tightening plate (302) away from the valve (301), and the arc-shaped groove (309) is communicated with the connecting pipe (304).

6. The novel elevator chuck card disassembly device according to claim 1 is characterized by: The main body (1) is also provided with a plurality of locking mechanisms (4), and the plurality of locking mechanisms (4) are distributed circumferentially with the axis of the first through hole (101) as the center; The locking mechanism (4) comprises a rotating shaft (401) and a rotating frame (402); the rotating shaft (401) passes through the rotating frame (402) horizontally; the rotating shaft (401) is rotatably connected to the rotating frame (402); a locking wheel (403) is eccentrically fixedly provided on the rotating shaft (401); the axis of the locking wheel (403) is located above the rotating shaft (401); and the axis of the locking wheel (403) is located close to the axis of the locking wheel (403). On a side near the first through hole (101), two torsion springs (404) are sleeved on the rotating shaft (401), the two torsion springs (404) correspond to the two ends of the rotating shaft (401) one by one, the two ends of the torsion spring (404) are respectively connected to the rotating frame (402) and the rotating shaft (401), and the rotating frame (402) is provided with a translation system, which enables the rotating frame (402) to move towards or away from the axis of the first through hole (101).

7. A novel elevator chuck card disassembly device according to claim 6, characterized in that: The translation system comprises a screw rod (405), wherein the screw rod (405) is arranged horizontally and is perpendicular to the rotation axis (401). A fixing block (406) is threadedly connected to the screw rod (405), and the fixing block (406) is fixedly arranged on the main body (1). The fixing block (406) and the screw rod (405) are locked by two nuts (407). The two nuts (407) are distributed along the length direction of the screw rod (405), and the fixing block (406) is located between the two nuts (407). The two nuts (407) are both in contact with the fixing block (406).

8. The novel elevator chuck card disassembly device according to claim 1 is characterized by: Both sides of the main body (1) extend outwards to form support parts (103), and the two support parts (103) are both detachably fixedly provided with lifting ears (4), and the main body (1) is provided with two groups of cushion blocks (105), and the two groups of cushion blocks (105) correspond to the two support parts (103) one by one; Each group of cushion blocks (105) is provided with two cushion blocks, and the two cushion blocks (105) in the same group are detachably fixedly connected from top to bottom, and the upper cushion block (105) is detachably fixedly arranged at the bottom of the support portion (103).

9. The novel elevator chuck card disassembly device according to claim 1 is characterized by: The top of the main body (1) is concave and forms a step (106) with the first through hole (101); a flange (203) is provided outwardly at the top of the converter (2); the flange (203) matches the step (106), and the flange (203) is arranged inside the step (106); The top of the main body (1) and the top of the converter (2) are in the same horizontal plane.

10. A card unlocking method, characterized in that: The steps include: Step 1: First, remove the upper guide plate and upper cover of the chuck (5), the chuck (5) being a combination of the hanging card (6) and the slip; Step 2: Use a winch to install the unblocking device between the lifting card (6) and the chuck (5), wherein the lifting card (6) and the chuck (5) are arranged vertically, a turntable (7) is provided below the chuck (5), the casing (8) vertically passes through the lifting card (6), the chuck (5) and the turntable (7) in sequence, and the lifting card (6) and the chuck (5) are both connected to the casing (8), the turntable (7) is installed at the drilling position, and a lifting ring (9) is connected to the lifting card (6); Step 3, placing two jacks (10) between the chuck (5) and the card release device, and supporting the card release device with the jacks (10); Step 4: lift the lifting card (6) through the lifting ring (9), and drive the chuck (5) to be less than 50 mm from the surface of the turntable (7); Step 5, operate the air control valve of the chuck (5) to make the air control valve control slips in the open state; Step 6: Simultaneously operate the jack (10) so that the top end of the jack (10) extends upward; Step 7: Finally, the tile body and the chuck (5) are released under the intervention of external force.

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