A drill pipe blowout prevention and cleaning machine

Abstract

The present invention relates to a drill pipe blowout prevention and cleaning machine, comprising a working assembly and an adjustment assembly for adjusting the distance between the working assembly and the drill pipe. The working assembly comprises a cleaning device and a blowout prevention device. The cleaning device comprises a base frame, an opening and closing turntable assembly, and a straightening assembly and a driving assembly arranged on the base frame. The opening and closing turntable assembly comprises an opening and closing assembly, an external thread brushing assembly, an internal thread brushing assembly, and an oiling assembly. The external thread brushing assembly is respectively arranged on the first and second swing arm assemblies of the opening and closing assembly. When the present invention uses the external thread brushing assembly for cleaning, it is only necessary to open the opening and closing assembly, and then close the opening and closing assembly after the opening and closing assembly is moved to the target position to clean the external thread. Compared with the prior art, the upper drill pipe in the present invention only needs to move upward slightly to clean the external thread, which can save time and improve production efficiency.

Description

Technical Field

[0001] The invention belongs to the field of mechanical devices for oil and natural gas drilling, and particularly relates to a drill pipe blowout preventer and thread cleaner. Background Art

[0002] With the increasing automation of oil drilling operations, automated drilling tool handling equipment, such as top drives, iron roughnecks, and drill floor manipulators, is becoming increasingly widespread. During the use and storage of drilling tools, rust and scaling often occur on the joint threads. If these rust and scaling are not promptly cleaned and thread oil is not applied, the service life and lifespan of the drilling tools will be affected.

[0003] In the existing technology, drill tool joint threads are typically cleaned manually and thread oil is applied. This method is labor-intensive, creates a harsh working environment, and carries high safety risks. Furthermore, when docking upper and lower drill tools, the lower end of the upper drill tool, due to its length, will swing slightly, making it difficult for the upper tool's external threads to align with the lower tool's internal threads. This often requires manual alignment of the drill tool, posing a significant safety risk. To address these issues, drill pipe blowout preventer cleaning machines have been developed that can quickly clean drill tool joint threads, apply thread oil, and align the drill tool, improving the automation level of drill tool operation equipment.

[0004] However, existing drill pipe blowout prevention and cleaning machines require rotating and switching between different functional modules for cleaning and applying thread oil. When switching to the external thread brushing component to clean the drill pipe's external threads, the upper drill pipe must be moved upward a certain distance to avoid interference. However, this process of moving the drill pipe up and down is slow and time-consuming, affecting production efficiency.

[0005] Therefore, a blowout preventer cleaning machine is needed that reduces the movement of the drill rod and shortens the movement time during the function switching process. Summary of the Invention

[0006] (1) Technical issues to be resolved

[0007] In order to solve the problem in the prior art that when a brush external thread assembly cleans the external thread of a drill rod, the upper drill rod needs to be moved upward, which affects production efficiency, the present invention provides a drill rod blowout prevention and cleaning machine.

[0008] (2) Technical solution

[0009] In order to achieve the above objectives, the main technical solutions adopted by the present invention include:

[0010] A drill pipe blowout prevention cleaning machine includes a working assembly and an adjustment assembly for adjusting the distance between the working assembly and the drill pipe; the working assembly includes a cleaning device and a blowout prevention device; when cleaning the drill pipe, the adjustment assembly is connected to the cleaning device; when disassembling the drill pipe, the adjustment assembly is connected to the blowout prevention device;

[0011] The cleaning button device includes a base frame, a straightening assembly, a driving assembly and an openable turntable assembly; the straightening assembly and the driving assembly are arranged on the base frame, and the driving assembly is used to drive the openable turntable assembly to rotate;

[0012] The openable and closable turntable assembly includes an opening and closing component, an external thread brushing component, an internal thread brushing component, and an oiling component;

[0013] The opening and closing assembly includes a first swing arm assembly and a second swing arm assembly that are symmetrically arranged, and the brush external thread assembly is respectively arranged on the first swing arm assembly and the second swing arm assembly, and can be opened and closed synchronously with the first swing arm assembly and the second swing arm assembly;

[0014] The brush internal thread assembly is connected to one of the first swing arm assembly and the second swing arm assembly.

[0015] As described above, the drill pipe blowout prevention and cleaning machine, preferably, the opening and closing assembly further includes a turntable, a swing arm cylinder, a first guide rod and a first guide block;

[0016] The first swing arm assembly and the second swing arm assembly are symmetrically arranged on the turntable;

[0017] The first swing arm assembly includes a first swing arm and a first connecting rod, and the second swing arm assembly includes a second swing arm and a second connecting rod; one end of the first connecting rod is connected to the first swing arm, and one end of the second connecting rod is connected to the second swing arm;

[0018] Both ends of the swing arm cylinder are connected to the turntable and the first guide block respectively;

[0019] One end of the first guide rod is fixedly arranged on the turntable, and the first guide block is sleeved on the first guide rod and can slide along the first guide rod;

[0020] The other end of the first connecting rod and the other end of the second connecting rod are respectively connected to the first guide block.

[0021] In the drill pipe blowout prevention and cleaning machine as described above, preferably, the external thread brushing assembly comprises a first external thread brushing assembly and a second external thread brushing assembly respectively provided on the first swing arm assembly and the second swing arm assembly;

[0022] The first brush external thread assembly includes a first track plate, a first male buckle brush disc, a first roller, a first cleaning cylinder and a plurality of first external thread brushes;

[0023] A semicircular track is provided on the first track plate, and both ends of the first cleaning cylinder are respectively connected to the first swing arm and the first male buckle brush plate; the first male buckle brush plate is connected to the first roller via a first limiting shaft, and the first roller is engaged with the semicircular track and can move along the semicircular track;

[0024] The plurality of first external thread brushes are evenly arranged on the first male buckle brush plate;

[0025] The second brush external thread assembly includes a second track plate, a second male buckle brush disc, a second roller, a second cleaning cylinder and a plurality of second external thread brushes;

[0026] A semicircular track is provided on the second track plate, and both ends of the second cleaning cylinder are respectively connected to the second swing arm and the second male buckle brush disc; the second male buckle brush disc is connected to the second roller via a second limiting shaft, and the second roller is engaged with the semicircular track and can move along the semicircular track;

[0027] The plurality of second external thread brushes are evenly arranged on the second male buckle brush plate.

[0028] In the drill pipe blowout prevention and cleaning machine as described above, preferably, a plurality of first chutes are provided on the first male screw brush disc, and a first slider is installed in the first chutes; a plurality of through holes are provided on the first external thread brush, and the first external thread brush is fixedly connected to the first slider through the through holes;

[0029] The first external thread brush assembly further includes a first pressing plate, a first spring, and a first guide member; the first pressing plate is fixedly disposed on the first male screw brush disc, one end of the first guide member is fixedly connected to the first pressing plate, the first spring is sleeved on the first guide member, and the other end of the first guide member is passed through the first slider; the first spring is located between the first pressing plate and the first slider;

[0030] The second male screw brush plate is provided with a plurality of second chutes, and a second slider is provided in the second chutes; the second external thread brush is provided with a plurality of through holes, and the second external thread brush is fixedly connected to the second slider through the through holes;

[0031] The second brush external thread assembly also includes a second pressure plate, a second spring and a second guide member; the second pressure plate is fixedly arranged on the second male buckle brush disc, one end of the second guide member is fixedly connected to the second pressure plate, the second spring is sleeved on the second guide member, and the other end of the second guide member is passed through the second slider; the second spring is located between the second pressure plate and the second slider.

[0032] As described above, the drill pipe blowout prevention and cleaning machine, preferably, the brush internal thread assembly includes a bearing chamber, an air motor, a drive shaft, a box brush disc and a plurality of internal thread brushes;

[0033] The bearing housing is fixedly connected to one of the first swing arm or the second swing arm;

[0034] The pneumatic motor is fixedly mounted on the bearing housing, and both ends of the drive shaft are connected to the output shaft of the pneumatic motor and the female buckle brush disc respectively;

[0035] The female buckle brush disc is provided with a plurality of third chutes, the number of which is the same as the number of the internal thread brushes; a third slider is provided in the third chute, and the internal thread brush is connected to the third slider;

[0036] The brush internal thread assembly further includes a third pressure plate, a third spring, and a third guide member; the third pressure plate is fixedly disposed on the female buckle brush disc, one end of the third guide member is fixedly connected to the third pressure plate, the third spring is sleeved on the third guide member, and the other end of the third guide member is passed through the third slider; the third spring is located between the third pressure plate and the third slider;

[0037] A reset spring is sleeved on the driving shaft and is located between the bearing compartment and the female buckle brush disc.

[0038] As described above, the drill pipe blowout prevention and cleaning machine, preferably, the straightening assembly includes a straightening manipulator provided on the base frame, and the straightening manipulator includes two groups, which are respectively provided at the upper end and the lower end of the retractable turntable assembly;

[0039] The righting manipulator comprises a righting base, a righting cylinder, a second guide rod, a second guide block, a first righting arm, a second righting arm, a first V-shaped roller and a second V-shaped roller;

[0040] The righting base is fixedly mounted on the base frame, one end of the second guide rod is fixedly mounted on the righting base, the second guide block is sleeved on the second guide rod and can slide along the second guide rod; both ends of the righting cylinder are respectively connected to the righting base and the second guide block;

[0041] The first centralizing arm and the second centralizing arm are symmetrically arranged and connected to the centralizing base via a third connecting rod and a fourth connecting rod respectively;

[0042] The first V-shaped roller and the second V-shaped roller are respectively arranged on the first centralizing arm and the second centralizing arm;

[0043] The straight line where the roller axes of the first V-shaped roller and the second V-shaped roller are located is perpendicular to the upper drill rod and the lower drill rod.

[0044] As described above, the drill pipe blowout prevention cleaning machine, preferably, the cleaning device further comprises two sets of straightening guide assemblies;

[0045] The two groups of righting guide assemblies are both arranged between the two groups of righting manipulators;

[0046] The straightening guide assembly includes a pushing cylinder, a pushing arm and a guide guard plate;

[0047] The two ends of the pushing cylinder are hinged to the base frame and the pushing arm respectively; the other end of the pushing arm is hinged to the guide guard plate; a U-shaped opening is provided on the guide guard plate, and the guide guard plate is fixedly arranged on the base frame.

[0048] In the drill pipe blowout preventer and cleaning machine as described above, preferably, the adjustment assembly includes a fixed manipulator and a telescopic arm assembly; the fixed manipulator is arranged on the drilling platform, and the two ends of the telescopic arm assembly are respectively connected to the fixed manipulator and the working assembly;

[0049] The fixed manipulator comprises a connection base, a rotary drive structure and a column connected in sequence from bottom to top;

[0050] The connecting base is arranged on the drilling platform; the column is perpendicular to the horizontal plane, and a track is arranged on the column.

[0051] As described above, the drill pipe blowout prevention and cleaning machine, preferably, the telescopic arm assembly includes a first pulley, a second pulley, a lifting cylinder, a telescopic cylinder and a cross rod structure;

[0052] The first pulley and the second pulley are arranged from top to bottom and are both slidably connected to the track;

[0053] The cylinder barrel and piston rod of the lifting cylinder are connected to the top of the column and the second pulley respectively; the cylinder barrel and piston rod of the telescopic cylinder are connected to the first pulley and the second pulley respectively;

[0054] The crossbar structure includes a vertical bar, a first folding bar and a second folding bar connected to the second pulley and the first pulley respectively;

[0055] The vertical pole is perpendicular to the horizontal plane, a slide is provided on the vertical pole, the first folding rod is connected to the slide, and the second folding rod is hinged to the vertical pole.

[0056] In the drill pipe blowout prevention and cleaning machine as described above, preferably, the first folding rod and the slide are further movably connected via a damping structure; a limiting structure is provided at the lower end of the slide;

[0057] The damping structure includes a first pin, a first limiting roller, a first friction plate, a second friction plate, a disc spring, and a baffle; the first pin is provided through the first folding rod or the second folding rod, the first limiting roller is provided through the first pin and is arranged in the slideway, and can move up and down along the slideway; the first friction plate and the second friction plate are respectively provided through the first pin and are respectively located on both sides of the vertical rod; a pre-tightening nut is provided at one end of the first pin, and the disc spring and the baffle are provided at the other end;

[0058] The pre-tightening nut is arranged on a side of the friction plate away from the vertical rod, and the disc spring and the baffle are arranged in sequence between the second friction plate and the shoulder of the first pin shaft;

[0059] The limiting structure includes a limiting block, a fourth pressure plate, a third guide block, a limiting screw and a limiting nut; the limiting screw is passed through the slide and is perpendicular to the horizontal plane; the third guide block is passed through the limiting screw; the limiting nut is threadedly connected to the limiting screw; the fourth pressure plate and the limiting block are located above the limiting nut in sequence from bottom to top.

[0060] (3) Beneficial effects

[0061] The beneficial effects of the present invention are:

[0062] The present invention utilizes an openable rotary disc assembly, specifically positioning external thread brushing assemblies on the first and second swing arm assemblies of the openable and closeable assembly. To switch between external thread brushing assemblies for cleaning, the openable and closeable assembly simply opens, separating the external thread brushing assemblies. Once the openable and closeable assembly moves to the target position, it closes to clean the external threads. Compared to existing technologies, the present invention requires only a small upward movement of the upper drill rod to clean the external threads, saving time and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] Figure 1 This is a schematic diagram of the overall structure of the drill pipe blowout prevention and cleaning machine of the present invention;

[0064] Figure 2 Schematic diagram of the structure of the adjustment assembly of the present invention;

[0065] Figure 3 for Figure 2 Cross-sectional view along AA;

[0066] Figure 4 Schematic diagram of the structure of the working assembly of the present invention;

[0067] Figure 5 This is a structural diagram of the working assembly from another angle;

[0068] Figure 6 It is a structural schematic diagram of the retractable turntable assembly in a closed state;

[0069] Figure 7 It is a structural schematic diagram of the retractable turntable assembly in the open state;

[0070] Figure 8 Schematic diagram of the structure of the first brush external thread assembly;

[0071] Figure 9 It is a structural diagram of the internal thread brush assembly;

[0072] Figure 10 It is a structural diagram of the righting robot;

[0073] Figure 11 This is a schematic diagram of the straightening robot straightening the upper drill pipe;

[0074] Figure 12 This is a schematic diagram of the straightening robot straightening the drill pipe.

[0075] [Description of Reference Numerals]

[0076] 1: Base frame; 2: Fixed manipulator; 3: Telescopic arm assembly; 4: Opening and closing turntable assembly; 5: External thread brushing assembly; 6: Internal thread brushing assembly; 7: Centralizing assembly; 8: Centralizing guide assembly; 9: Drive assembly; 10: External thread oiling assembly; 11: Internal thread oiling assembly; 12: Blowout prevention device; 13: Upper drill rod; 14: Lower drill rod; 15: Oil injection switch; 16: Pneumatic solenoid valve manifold; 17: Terminal box; 18: Through-beam switch;

[0077] 101: connecting seat;

[0078] 21: Connecting base; 22: Rotary drive structure; 23: Column; 24: First pulley; 25: Second pulley; 26: Lifting cylinder; 27: Telescopic cylinder;

[0079] 31: Cross rod structure; 3101: First folding rod; 3102: Second folding rod;

[0080] 32: Pole; 321: Slide;

[0081] 33: First pin; 34: First limiting roller; 35: First friction plate; 36: Second friction plate; 37: Disc spring; 38: Baffle; 39: Pre-tightening nut;

[0082] 310: Limit block; 311: Fourth pressure plate; 312: Third guide block; 313: Limit screw; 314: Limit nut;

[0083] 41: Turntable; 42: Swing arm cylinder; 43: First swing arm; 44: First connecting rod; 45: Second swing arm; 46: First guide rod; 47: First guide block;

[0084] 51: first brush external thread assembly; 52: second brush external thread assembly;

[0085] 511: first track plate; 512: first male buckle brush plate; 513: first roller; 514: first cleaning cylinder;

[0086] 515: first external thread brush; 5151: through hole;

[0087] 516: semicircular track; 517: first limiting shaft; 518: first slide groove; 519: first slider; 520: first pressure plate; 521: first spring; 522: first guide member; 523: support washer; 524: quick-release pin; 525: fixed pin; 526: third limiting shaft; 527: limiting washer;

[0088] 61: bearing housing; 62: pneumatic motor; 63: drive shaft; 64: box brush; 65: internal thread brush; 66: third slide; 67: third slider; 68: third pressure plate; 69: third spring; 610: third guide; 611: return spring;

[0089] 71: Righting base; 72: Righting cylinder; 73: Second guide rod; 74: Second guide block; 75: First righting arm; 76: Second righting arm; 77: First V-shaped roller; 78: Second V-shaped roller; 79: Third connecting rod; 710: Fourth connecting rod;

[0090] 81: Push cylinder; 82: Push arm; 83: Guide guard plate;

[0091] 91: Servo motor; 92: Reducer. DETAILED DESCRIPTION

[0092] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0093] Example 1

[0094] like Figure 1-12As shown, this embodiment provides a drill pipe blowout prevention and cleaning machine, including a working assembly and an adjustment assembly for adjusting the distance between the working assembly and the drill pipe.

[0095] The working assembly includes a cleaning device and a blowout preventer 12. When cleaning the drill pipe, the adjustment assembly is connected to the cleaning device. When disassembling the drill pipe, the adjustment assembly is connected to the blowout preventer 12. Specifically, the cleaning device or the blowout preventer 12 can be selectively detachably connected to the adjustment assembly according to different working conditions.

[0096] The button cleaning device includes a base frame 1, a centering assembly 7, a centering guide assembly 8, a drive assembly 9, and an openable turntable assembly 4. The centering assembly 7 and drive assembly 9 are mounted on the base frame 1, and the drive assembly 9 is used to rotate the openable turntable assembly 4. The openable turntable assembly 4 includes an opening and closing assembly, an external thread brushing assembly 5, an internal thread brushing assembly 6, and an oiling assembly, which includes an external thread oiling assembly 10 and an internal thread oiling assembly 11.

[0097] The opening and closing assembly includes a first swing arm assembly and a second swing arm assembly that are symmetrically arranged. The brush external thread assembly 5 is respectively arranged on the first swing arm assembly and the second swing arm assembly, and can be opened and closed synchronously with the first swing arm assembly and the second swing arm assembly.

[0098] The internal thread brush assembly 6 is connected to one of the first and second swing arm assemblies, and the internal thread oiling assembly 11 is connected to the other of the first and second swing arm assemblies. The external thread oiling assembly 10 is arranged inside the external thread brush assembly 5.

[0099] This embodiment utilizes an openable and retractable turntable assembly 4, specifically disposing external thread brushing assemblies 5 on the first and second swing arm assemblies of the openable and retractable assembly. To switch between external thread brushing assemblies 5 and external thread cleaning, the openable and retractable assembly simply opens, disengaging the external thread brushing assemblies 5. Once the openable and retractable assembly has moved to its target position, it is closed to resume external thread cleaning. In this embodiment, the upper drill rod 13 only needs to be moved upward slightly, for example, 150-200 mm, to clean the external threads. This saves time and improves production efficiency compared to prior art methods where the drill rod must be lifted a greater distance, for example, over 650 mm.

[0100] like Figure 1-2 As shown, the adjustment assembly includes a fixed manipulator 2 and a telescopic arm assembly 3. One end of the fixed manipulator 2 is set on the drilling platform, and the other end is connected to the telescopic arm assembly 3. The other end of the telescopic arm assembly 3 is detachably connected to the working assembly.

[0101] The fixed manipulator 2 comprises a connection base 21, a rotary drive structure 22, and a column 23, connected in sequence from bottom to top. The connection base 21 is mounted on the drilling platform, and the lower end of the rotary drive structure 22 is fixedly connected to the connection base 21 via bolts. The column 23 is perpendicular to the horizontal plane and is fixed to the upper end surface of the rotary drive structure 22 via bolts. The column 23 can rotate around the axis of the rotary drive structure 22 under the action of the rotary drive structure 22.

[0102] The telescopic arm assembly 3 includes a first pulley 24 , a second pulley 25 , a lifting cylinder 26 , a telescopic cylinder 27 and a cross-bar structure 31 .

[0103] A track is provided on the column 23, and a first pulley 24 and a second pulley 25 are arranged from top to bottom, both slidably connected to the track. The cylinder barrel and piston rod of the lifting cylinder 26 are connected to the top of the column 23 and the second pulley 25, respectively. The cylinder barrel and piston rod of the telescopic cylinder 27 are connected to the first pulley 24 and the second pulley 25, respectively. The lifting cylinder 26 controls the height of the second pulley 25 by extending and retracting, while the telescopic cylinder 27 controls the distance between the first pulley 24 and the second pulley 25 by extending and retracting.

[0104] The crossbar structure 31 includes a vertical bar 32, a first folding bar 3101, and a second folding bar 3102 connected to the second trolley 25 and the first trolley 24, respectively. The vertical bar 32 is perpendicular to the horizontal plane and is provided with a U-shaped slide 321. One of the first folding bar 3101 and the second folding bar 3102 is connected to the vertical bar 32, while the other is connected to the slide 321. When the distance between the first trolley 24 and the second trolley 25 changes, the first folding bar 3101 and the second folding bar 3102 can be extended and retracted, thereby adjusting the working assembly.

[0105] When the adjustment assembly is adjusting the working assembly, during the process of extending and retracting the first folding rod 3101 and the second folding rod 3102, after the telescopic cylinder 27 stops moving, the first folding rod 3101 and the second folding rod 3102 will continue to deform due to inertia, resulting in inaccurate positioning of the working assembly. Figure 3 As shown, in this embodiment, one of the first folding rod 3101 or the second folding rod 3102 is connected to the vertical rod 32 via a damping structure, and a limiting structure is also provided at the lower end of the slide 321 .

[0106] The damping structure specifically includes a first pin 33 , a first limiting roller 34 , a first friction plate 35 , a second friction plate 36 , a disc spring 37 and a baffle 38 .

[0107] The first pin 33 is inserted through either the first folding rod 3101 or the second folding rod 3102. The first limiting roller 34 is inserted through the first pin 33 and positioned within the slideway 321, enabling it to move up and down along the slideway 321. A first friction plate 35 and a second friction plate 36 are respectively inserted through the first pin 33 and positioned on either side of the vertical rod 32. A pre-tightening nut 39 is provided at one end of the first pin 33, while a disc spring 37 and a baffle 38 are provided at the other end. The pre-tightening nut 39 is positioned on the side of the friction plate away from the vertical rod 32. The disc spring 37 and baffle 38 are positioned, respectively, between the second friction plate 36 and the shoulder of the first pin 33.

[0108] The axial end of the first pin shaft 33 presses the first friction plate 35 and the second friction plate 36 onto the vertical rod 32 through the pre-tightening force after compression by the pre-tightening nut 39 and the disc spring 37. Therefore, the friction force on the vertical rod 32 can be controlled by adjusting the pre-tightening force, thereby increasing the damping of the relative movement of the first folding rod 3101 and the second folding rod 3102 and the vertical rod 32. The damping can balance part of the inertia force generated by the first folding rod 3101 and the second folding rod 3102 during extension and retraction. At the same time, the elastic deformation of the disc spring 37 can compensate for the gap caused by the wear of the relative movement between the first folding rod 3101 and the second folding rod 3102 and the vertical rod 32, thereby improving the position accuracy of the extension and retraction of the telescopic arm assembly 3.

[0109] The limiting structure includes a limiting block 310, a fourth pressure plate 311, a third guide block 312, a limiting screw 313, and a limiting nut 314. A vertical threaded hole is provided at the lower end of the U-shaped slideway 321 of the vertical rod 32. The limiting screw 313 is inserted into the threaded hole and is perpendicular to the horizontal plane. The third guide block 312 is inserted into the limiting screw 313. The limiting nut 314 is threadedly connected to the limiting screw 313. The fourth pressure plate 311 and the limiting block 310 are located above the limiting nut 314 in order from bottom to top.

[0110] The upper end of the limiting screw 313 slides in the U-shaped slide 321 of the vertical pole 32 through the limiting block 310, the fourth pressure plate 311 and the third guide block 312. By adjusting the height of the limiting screw 313 in the U-shaped slide 321 of the vertical pole 32, the limiting block 310 can limit the farthest extension position of the first folding rod 3101 and the second folding rod 3102, thereby further improving the positioning accuracy of the telescopic arm assembly 3.

[0111] like Figure 6-7 As shown, the opening and closing assembly further includes a turntable 41, a swing arm cylinder 42, a first guide rod 46 and a first guide block 47. The first swing arm 43 assembly and the second swing arm assembly are identical in composition and are symmetrically arranged on the turntable 41 via pins.

[0112] Specifically, the first swing arm 43 assembly includes a first swing arm 43 and a first connecting rod 44, and the second swing arm assembly includes a second swing arm 45 and a second connecting rod. One end of the first connecting rod 44 is connected to the first swing arm 43 via a pin, and one end of the second connecting rod is also connected to the second swing arm 45 via a pin.

[0113] One end of the first guide rod 46 is fixed to the turntable 41 via a fixing pin, and the first guide block 47 is sleeved on the first guide rod 46 and can slide along the first guide rod 46. One end of the swing arm cylinder 42 is hinged to the turntable 41, and the other end is hinged to the first guide block 47. The other end of the first connecting rod 44 and the other end of the second connecting rod are respectively connected to the first guide block 47 via pins.

[0114] Through the extension and retraction of the swing arm cylinder 42, the first guide block 47 drives the first connecting rod 44 and the second connecting rod, and then the first connecting rod 44 and the second connecting rod respectively drive the first swing arm 43 and the second swing arm 45 to rotate in opposite directions through the same angle, thereby realizing the opening and closing actions of the first swing arm 43 and the second swing arm 45.

[0115] like Figure 4-5 As shown, a connection base 101 is provided on the base frame 1, and the telescopic arm assembly 3 is connected to the base frame 1 via the connection base 101. The fuel injection switch 15, pneumatic solenoid valve manifold 16, and terminal box 17 are bolted to the base frame 1. The through-beam switch 18 is fixed to the guide guard plate 83 at the lower end via a bracket. The through-beam switch 18 is used to detect the height of the female connector of the lower drill rod 14 and the male connector of the upper drill rod 13.

[0116] The driving assembly 9 includes a servo motor 91 and a reducer 92. When the servo motor 91 rotates at a certain angle, one of the components among the external thread brushing assembly 5, the internal thread brushing assembly 6, the internal thread oiling assembly 11 and the external thread oiling assembly 10 reaches the working position, thereby enabling the thread cleaning device to complete the operations of cleaning the threads of the drill tool, applying thread oil, and straightening and guiding.

[0117] When the internal thread needs to be brushed or oiled, the first swing arm 43 and the second swing arm 45 are in the open state. Figure 4The shooting switch 18 shown detects the height of the drill pipe female joint, and then the first swing arm 43 and the second swing arm 45 are closed, and the driving assembly 9 drives the opening and closing turntable assembly 4 to rotate to the internal thread brushing station or the internal thread oiling station. When it is necessary to brush the external thread or to oil the external thread, the first swing arm 43 and the second swing arm 45 are opened, and the shooting switch 18 detects the height of the drill pipe male joint, and then the opening and closing turntable assembly 4 is moved to a height suitable for the drill pipe male joint under the drive of the telescopic arm assembly 3, and the first swing arm 43 and the second swing arm 45 are closed. The external thread brushing assembly 5 is respectively arranged on the first swing arm 43 and the second swing arm 45. The external thread brushing assembly 5 performs the external thread brushing operation under the drive of the cleaning cylinder. The external thread oiling assembly 10 is respectively arranged on the first swing arm 43 and the second swing arm 45, and is located on the inner side below the external thread brushing assembly 5. The external thread oiling assembly 10 consists of a spray valve and a bracket. When it is necessary to oil the external thread, Figure 4 The oil injection switch 15 in the drill pipe is turned on, and the injection valve atomizes the thread oil and sprays it out under the combined action of high-pressure thread oil and compressed air, and then sprays the thread oil in a scattered manner on the thread surface of the drill pipe male joint.

[0118] like Figure 8 As shown, the brush external thread assembly 5 includes a first brush external thread assembly 51 and a second brush external thread assembly 52 which are respectively arranged on the first swing arm assembly and the second swing arm assembly.

[0119] The first brush external thread assembly 51 includes a first track plate 511 , a first male screw brush disc 512 , a first roller 513 , a first cleaning cylinder 514 , and a plurality of first external thread brushes 515 , preferably three first external thread brushes 515 .

[0120] A semicircular track 516 is defined on the first track plate 511 and is bolted to the first swing arm 43. A support washer 523 is screwed onto the semicircular track 516, supporting the first male brush disc 512. One end of a first cleaning cylinder 514 is connected to the first swing arm 43, and the other end is connected to the first male brush disc 512 via a fixing pin 525. The first male brush disc 512 is connected to the first roller 513 via a first limiting shaft 517. The first roller 513 engages with the semicircular track 516 and is movable along the semicircular track 516. The first roller 513 and the limiting washer 527 are mounted on the first limiting shaft 517, restricting the movement of the first male brush disc 512 in three directions: upward, downward, and radial within the semicircular track 516. This embodiment also includes a third limiting shaft 526, which functions similarly to the first limiting shaft 517, restricting the first male brush disc 512 to circular motion along the semicircular track 516. The three first externally threaded brushes 515 are evenly distributed on the first male brush disc 512. The reciprocating extension and retraction of the first cleaning cylinder 514 causes the first male brush disc 512 to move circumferentially around the external threads of the drill pipe.

[0121] The structure of the second brush external thread assembly 52 is identical to that of the first brush external thread assembly 51, similarly comprising a second track plate, a second male brush disc, a second roller, a second cleaning cylinder, and three second external thread brushes. A semicircular track 516 is provided on the second track plate, which forms a full circle with the semicircular track 516 on the first track plate 511 when closed. The ends of the second cleaning cylinder are respectively connected to the second swing arm 45 and the second male brush disc. The second male brush disc is connected to the second roller via a second limiting shaft. The second roller engages with the semicircular track 516 and can move along the semicircular track 516. Similarly, the three second external thread brushes are evenly distributed on the second male brush disc.

[0122] Furthermore, the first male detent brush disc 512 is provided with a plurality of first chutes 518, within which a first slider 519 is mounted. The first externally threaded brush 515 is provided with a plurality of through-holes 5151, through which the first externally threaded brush 515 is fixedly connected to the first slider 519, specifically via a quick-release pin 524. The first externally threaded brush assembly 51 also includes a first pressure plate 520, a first spring 521, and a first guide member 522. The first pressure plate 520 is fixedly provided on the first male detent brush disc 512, one end of the first guide member 522 is fixedly connected to the first pressure plate 520, the first spring 521 is sleeved on the first guide member 522, and the other end of the first guide member 522 is passed through the first slider 519; the first spring 521 is located between the first pressure plate 520 and the first slider 519.

[0123] The first slider 519 is capable of sliding within the first chute 518. The first slider 519 is provided with a square through-hole and a circular through-hole 5151 perpendicular to the square through-hole. The first externally threaded brush 515 passes through the square through-hole of the first slider 519. The first externally threaded brush 515 is provided with four circular through-holes 5151. The quick-release pin 5248 passes through both the circular through-holes 5151 of the first slider 519 and the circular through-holes 5151 of the first externally threaded brush 515, securing the first slider 519 and the first externally threaded brush 515 together. Therefore, this embodiment can accommodate drill rods of different specifications by adjusting the circular through-holes 5151 at different positions on the first externally threaded brush 515. When the first swing arm 43 and the second swing arm 45 are closed to perform the operation of brushing the external thread of the drill rod, the bristles of the first external thread brush 515 contact the external thread of the drill rod, and the external thread of the drill rod will generate a reaction force on the bristles. Under the reaction force of the bristles, the first external thread brush 515 pushes the first slider 519 to slide away from the drill rod, so that the first external thread brush 515 maintains an appropriate contact force with the drill rod. Therefore, for drill rods of different specifications, the external thread brush of this embodiment has a certain adaptability, can adapt to drill rods of more sizes, and at the same time has an automatic adaptive adjustment function.

[0124] Similarly, the arrangement, connection relationship and function of the sliding groove, slider pressure plate, spring, guide member, etc. of the second brush external thread component 52 are completely consistent with the above-mentioned structure of the first brush external thread component 51 and will not be repeated.

[0125] like Figure 9 As shown, the brush internal thread assembly 6 includes a bearing housing 61, an air motor 62, a drive shaft 63, a box brush disc 64 and a plurality of internal thread brushes 65, preferably three internal thread brushes 65.

[0126] The bearing housing 61 is fixedly connected to either the first swing arm 43 or the second swing arm 45. The pneumatic motor 62 is fixedly mounted on the bearing housing 61. The two ends of the drive shaft 63 are respectively connected to the output shaft of the pneumatic motor 62 and the female buckle brush plate 64. The female buckle brush plate 64 is provided with three third chute slots 66, and a third slider 67 is disposed within each of the third chute slots 66. The internally threaded brush 65 is fixedly connected to the third slider 67 via bolts.

[0127] The internal thread brush assembly 6 further includes a third pressure plate 68, a third spring 69, and a third guide member 610. The third pressure plate 68 is fixedly mounted on the female buckle brush disc 64. One end of the third guide member 610 is fixedly connected to the third pressure plate 68. The third spring 69 is sleeved on the third guide member 610. The other end of the third guide member 610 passes through the third slider 67. The third spring 69 is located between the third pressure plate 68 and the third slider 67.

[0128] Preferably, three internal thread brushes 65 are provided, evenly distributed on the box brush disc 64. When the pneumatic motor 62 is not activated, the internal thread brushes 65 are retracted near the center of the box brush disc 64 due to the force of the third spring 69. Initially, the outer dimensions of the internal thread brushes 65 are smaller than the internal thread diameter of the drill rod. When the pneumatic motor 62 rotates, the box brush disc 64 is driven by the drive shaft 63. The third slider 67, under the action of centrifugal force, overcomes the force of the third spring 69 and sliding friction and moves toward the outer ring of the box brush disc 64, causing the internal thread brushes 65 to expand. The internal thread brushes 65 then contact and slide relative to the internal threads of the drill rod, performing their cleaning function until they are blocked by the threads and no longer expand. Therefore, the internal thread brush assembly 6 of this embodiment can automatically adapt to drill rods of varying diameters. When the pneumatic motor 62 stops, the centrifugal force acting on the third slider 67 dissipates, and the third slider 67 returns to its starting position under the force of the third spring 69.

[0129] A return spring 611 is mounted on the drive shaft 63 and is located between the bearing housing 61 and the female brush disc 64. When an upward external force is applied to the female brush disc 64, it moves upward along the axis of the drive shaft 63. When the external force decreases or disappears, the female brush disc 64 returns to its original position under the action of its own weight and the third spring 69.

[0130] like Figure 10-12 As shown, the straightening assembly 7 includes two sets of straightening manipulators disposed at the upper and lower ends of the base frame 1. The straightening manipulator disposed at the upper end of the base frame 1 and the straightening manipulator disposed at the lower end of the base frame 1 are used to clamp, center, and straighten the upper drill rod 13 and the lower drill rod 14, respectively. The two sets of straightening manipulators are identical in structure, differing in that they are disposed in opposite directions.

[0131] The righting manipulator includes a righting base 71 , a righting cylinder 72 , a second guide rod 73 , a second guide block 74 , a first righting arm 75 , a second righting arm 76 , a first V-shaped roller 77 and a second V-shaped roller 78 .

[0132] The straightening base 71 is fixed on the base frame 1 by bolts, one end of the second guide rod 73 is fixed on the straightening base 71 by a fixing pin, the second guide block 74 is sleeved on the second guide rod 73 and can slide along the second guide rod 73, and the two ends of the straightening cylinder 72 are respectively connected to the straightening base 71 and the second guide block 74 by pin shafts.

[0133] The first and second centralizing arms 75, 76 are symmetrically arranged and connected to the centralizing base 71 via a pin, a third connecting rod 79, and a fourth connecting rod 710, respectively. A first V-shaped roller 77 and a second V-shaped roller 78 are respectively mounted on the first and second centralizing arms 75, 76 via a pin. The straight line along which the roller axes of the first and second V-shaped rollers 77, 78 lie is perpendicular to the upper and lower drill rods 13, 14.

[0134] When the straightening cylinder 72 is extended, it pushes the second guide block 74 to slide along the second guide rod 73. The second guide block 74 simultaneously drives the third connecting rod 79 and the fourth connecting rod 710 to swing. At the same time, the third connecting rod 79 drives the first straightening arm 75 to swing, and the fourth connecting rod 710 drives the second straightening arm 76 to swing. Due to the symmetrical structure, the first straightening arm 75 and the second straightening arm 76 are close to each other at the same swing angle. When there is a drill rod between the first V-shaped roller 77 and the second V-shaped roller 78, the drill rod will be clamped to the symmetrical center position of the straightening base 71. At the same time, the V-shaped bevels of the first V-shaped roller 77 and the second V-shaped roller 78 will clamp the drill rod to the symmetrical center position of the V shape. Therefore, the straightening manipulator in this embodiment has a certain automatic centering function for the drill rod.

[0135] Two sets of the aforementioned righting guide assemblies 8 are provided. To minimize oversizing, each set is located between the two righting manipulators. The righting guide assemblies 8 comprise a push cylinder 81, a push arm 82, and a guide guard 83. The push cylinder 81 is hinged at both ends to the base frame 1 and the push arm 82, respectively. The other end of the push arm 82 is hinged to the guide guard 83. The guide guard 83 has a U-shaped opening and is fixed to the base frame 1.

[0136] Existing straightening manipulators still require manual intervention to straighten the drill rod, and the straightening effect is poor. The function of the straightening guide assembly 8 is to push the upper and lower drill rods farther from the straightening manipulator into the U-shaped opening of the guide guard plate 83 before the straightening manipulator straightens them, ensuring that the upper and lower drill rods can be accurately straightened by the straightening manipulator. This embodiment, through the provision of the straightening guide assembly 8 and two sets of straightening manipulators, can achieve automatic straightening of the drill rod completely without manual intervention, saving manpower and improving the straightening effect.

[0137] The above embodiments are only used to explain the present invention and do not limit the scope of protection of the present invention. Those skilled in the art may make various deformations or modifications within the scope of the claims, which belong to the essence of the present invention.

Claims

1. A drill pipe blowout prevention and cleaning machine, characterized in that: The invention comprises a working assembly and an adjusting assembly for adjusting the distance between the working assembly and the drill rod; the working assembly comprises a cleaning buckle device and a blowout prevention device; when cleaning buckle the drill rod, the adjusting assembly is connected to the cleaning buckle device; when disassembling the drill rod, the adjusting assembly is connected to the blowout prevention device; The cleaning button device includes a base frame, a straightening assembly, a driving assembly and an openable turntable assembly; the straightening assembly and the driving assembly are arranged on the base frame, and the driving assembly is used to drive the openable turntable assembly to rotate; The openable and closable turntable assembly includes an opening and closing component, an external thread brushing component, an internal thread brushing component, and an oiling component; The opening and closing assembly includes a first swing arm assembly and a second swing arm assembly that are symmetrically arranged, and the brush external thread assembly is respectively arranged on the first swing arm assembly and the second swing arm assembly, and can be opened and closed synchronously with the first swing arm assembly and the second swing arm assembly; The brush internal thread assembly is connected to one of the first swing arm assembly and the second swing arm assembly; The opening and closing assembly further includes a turntable, a swing arm cylinder, a first guide rod and a first guide block; The first swing arm assembly and the second swing arm assembly are symmetrically arranged on the turntable; The first swing arm assembly includes a first swing arm and a first connecting rod, and the second swing arm assembly includes a second swing arm and a second connecting rod; one end of the first connecting rod is connected to the first swing arm, and one end of the second connecting rod is connected to the second swing arm; Both ends of the swing arm cylinder are connected to the turntable and the first guide block respectively; One end of the first guide rod is fixedly arranged on the turntable, and the first guide block is sleeved on the first guide rod and can slide along the first guide rod; The other end of the first connecting rod and the other end of the second connecting rod are respectively connected to the first guide block.

2. The drill pipe blowout prevention and cleaning machine according to claim 1, characterized in that: The brush external thread assembly includes a first brush external thread assembly and a second brush external thread assembly respectively provided on the first swing arm assembly and the second swing arm assembly; The first brush external thread assembly includes a first track plate, a first male buckle brush disc, a first roller, a first cleaning cylinder and a plurality of first external thread brushes; A semicircular track is provided on the first track plate, and both ends of the first cleaning cylinder are respectively connected to the first swing arm and the first male buckle brush plate; the first male buckle brush plate is connected to the first roller via a first limiting shaft, and the first roller is engaged with the semicircular track and can move along the semicircular track; The plurality of first external thread brushes are evenly arranged on the first male buckle brush plate; The second brush external thread assembly includes a second track plate, a second male buckle brush disc, a second roller, a second cleaning cylinder and a plurality of second external thread brushes; A semicircular track is provided on the second track plate, and both ends of the second cleaning cylinder are respectively connected to the second swing arm and the second male buckle brush disc; the second male buckle brush disc is connected to the second roller via a second limiting shaft, and the second roller is engaged with the semicircular track and can move along the semicircular track; The plurality of second external thread brushes are evenly arranged on the second male buckle brush plate.

3. The drill pipe blowout prevention and cleaning machine according to claim 2, characterized in that: The first male screw brush plate is provided with a plurality of first chutes, in which a first slider is installed; the first external screw brush is provided with a plurality of through holes, through which the first external screw brush is fixedly connected to the first slider; The first external thread brush assembly further includes a first pressing plate, a first spring, and a first guide member; the first pressing plate is fixedly disposed on the first male screw brush disc, one end of the first guide member is fixedly connected to the first pressing plate, the first spring is sleeved on the first guide member, and the other end of the first guide member is passed through the first slider; the first spring is located between the first pressing plate and the first slider; The second male screw brush plate is provided with a plurality of second chutes, and a second slider is provided in the second chutes; the second external thread brush is provided with a plurality of through holes, and the second external thread brush is fixedly connected to the second slider through the through holes; The second brush external thread assembly also includes a second pressure plate, a second spring and a second guide member; the second pressure plate is fixedly arranged on the second male buckle brush disc, one end of the second guide member is fixedly connected to the second pressure plate, the second spring is sleeved on the second guide member, and the other end of the second guide member is passed through the second slider; the second spring is located between the second pressure plate and the second slider.

4. The drill pipe blowout prevention and cleaning machine according to claim 2, characterized in that: The brush internal thread assembly includes a bearing housing, an air motor, a drive shaft, a box brush disc and a plurality of internal thread brushes; The bearing housing is fixedly connected to one of the first swing arm or the second swing arm; The pneumatic motor is fixedly mounted on the bearing housing, and both ends of the drive shaft are connected to the output shaft of the pneumatic motor and the female buckle brush disc respectively; The female buckle brush disc is provided with a plurality of third chutes, the number of which is the same as the number of the internal thread brushes; a third slider is provided in the third chute, and the internal thread brush is connected to the third slider; The brush internal thread assembly further includes a third pressure plate, a third spring, and a third guide member; the third pressure plate is fixedly disposed on the female buckle brush disc, one end of the third guide member is fixedly connected to the third pressure plate, the third spring is sleeved on the third guide member, and the other end of the third guide member is passed through the third slider; the third spring is located between the third pressure plate and the third slider; A reset spring is sleeved on the driving shaft and is located between the bearing compartment and the female buckle brush disc.

5. The drill pipe blowout prevention and cleaning machine according to claim 1, characterized in that: The said righting assembly comprises a righting manipulator provided on the said chassis, and the said righting manipulator comprises two groups, which are respectively provided at the upper end and the lower end of the said opening and closing turntable assembly; The righting manipulator comprises a righting base, a righting cylinder, a second guide rod, a second guide block, a first righting arm, a second righting arm, a first V-shaped roller and a second V-shaped roller; The righting base is fixedly mounted on the base frame, one end of the second guide rod is fixedly mounted on the righting base, the second guide block is sleeved on the second guide rod and can slide along the second guide rod; both ends of the righting cylinder are respectively connected to the righting base and the second guide block; The first centralizing arm and the second centralizing arm are symmetrically arranged and connected to the centralizing base via a third connecting rod and a fourth connecting rod respectively; The first V-shaped roller and the second V-shaped roller are respectively arranged on the first centralizing arm and the second centralizing arm; The straight line where the roller axes of the first V-shaped roller and the second V-shaped roller are located is perpendicular to the upper drill rod and the lower drill rod.

6. The drill pipe blowout prevention and cleaning machine according to claim 1, characterized in that: The cleaning button device also includes two sets of straightening guide components; The two groups of righting guide assemblies are both arranged between the two groups of righting manipulators; The straightening guide assembly includes a pushing cylinder, a pushing arm and a guide guard plate; The two ends of the pushing cylinder are hinged to the base frame and the pushing arm respectively; the other end of the pushing arm is hinged to the guide guard plate; a U-shaped opening is provided on the guide guard plate, and the guide guard plate is fixedly arranged on the base frame.

7. The drill pipe blowout prevention and cleaning machine according to claim 1, characterized in that: The adjustment assembly includes a fixed manipulator and a telescopic arm assembly; the fixed manipulator is arranged on the drilling platform, and the two ends of the telescopic arm assembly are respectively connected to the fixed manipulator and the working assembly; The fixed manipulator comprises a connection base, a rotary drive structure and a column connected in sequence from bottom to top; The connecting base is arranged on the drilling platform; the column is perpendicular to the horizontal plane, and a track is arranged on the column.

8. The drill pipe blowout prevention and cleaning machine according to claim 7, characterized in that: The telescopic arm assembly includes a first pulley, a second pulley, a lifting cylinder, a telescopic cylinder and a cross rod structure; The first pulley and the second pulley are arranged from top to bottom and are both slidably connected to the track; The cylinder barrel and piston rod of the lifting cylinder are connected to the top of the column and the second pulley respectively; the cylinder barrel and piston rod of the telescopic cylinder are connected to the first pulley and the second pulley respectively; The crossbar structure includes a vertical bar, a first folding bar and a second folding bar connected to the second pulley and the first pulley respectively; The vertical pole is perpendicular to the horizontal plane, a slide is provided on the vertical pole, the first folding rod is connected to the slide, and the second folding rod is hinged to the vertical pole.

9. The drill pipe blowout prevention and cleaning machine according to claim 8, characterized in that: The first folding rod and the slide are also movably connected via a damping structure; a limiting structure is provided at the lower end of the slide; The damping structure includes a first pin, a first limiting roller, a first friction plate, a second friction plate, a disc spring and a baffle; The first pin is provided through the first folding rod or the second folding rod, the first limiting roller is provided through the first pin and is arranged in the slideway, and can move up and down along the slideway; the first friction plate and the second friction plate are respectively provided through the first pin and are respectively located on both sides of the vertical rod; a pre-tightening nut is provided at one end of the first pin, and the disc spring and the baffle are provided at the other end; The pre-tightening nut is arranged on a side of the friction plate away from the vertical rod, and the disc spring and the baffle are arranged in sequence between the second friction plate and the shoulder of the first pin shaft; The limiting structure includes a limiting block, a fourth pressure plate, a third guide block, a limiting screw and a limiting nut; the limiting screw is passed through the slide and is perpendicular to the horizontal plane; the third guide block is passed through the limiting screw; the limiting nut is threadedly connected to the limiting screw; the fourth pressure plate and the limiting block are located above the limiting nut in sequence from bottom to top.

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