High-torque screw drill

Abstract

The high-torque screw drilling tool comprises a screw drilling tool body, a drilling machine cross beam, a lifting mechanism and a blowout prevention mechanism, a connecting rod is rotationally connected to the lower portion of the drilling machine cross beam, the connecting rod and the screw drilling tool body are installed in a threaded mode, and the blowout prevention mechanism is installed on the lifting mechanism. The blowout prevention mechanism comprises a blowout prevention sleeve, a first clamping assembly and a second clamping assembly, wherein the first clamping assembly and the second clamping assembly are symmetrically arranged in the blowout prevention sleeve, and the first clamping assembly comprises a fixing ring fixedly connected to the inner wall of one side of the blowout prevention sleeve. Through the arrangement of the blowout prevention mechanism, the blowout prevention mechanism can be installed on connecting rods with different diameters and the outer wall of the screw drill body under the cooperation of a plurality of assemblies of the blowout prevention mechanism, so that the blowout prevention mechanism can be rapidly installed at the position of a mud discharging connector for use, and compared with an existing hinged installation mode, the installation mode is more convenient to operate, and the installation efficiency is improved. The installation process is simplified, the installation convenience is improved, and the application range of the blowout prevention mechanism is effectively enlarged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oil extraction equipment, in particular to a high-torque screw drill. BACKGROUND

[0002] Drilling equipment and tools include ground drilling equipment (oil drilling rig) and screw drill and the like. Mainly includes the following several systems: hoisting system, used for lifting, lowering screw drill, replacing drill, lowering casing and the like operation; rotation system, used for driving screw drill to rotate, breaking rock, deepening well hole; circulation system, used for circulating drilling fluid to clean the bottom of the well, carrying out the broken rock cuttings, ensuring continuous drilling; power equipment, driving power equipment of winch, rotary table, drilling pump and the like working machine, mostly diesel engine, also part of the drilling rig is driven by alternating current or direct current motor; transmission system, the main task is to transmit and distribute the energy of power equipment to each working machine; control system, in order to command each system to work coordinately, the whole drilling rig is also equipped with various control equipment, such as mechanical, hydraulic or electric control device, equipped with centralized control console and observation recording instrument and the like; drilling platform, drilling platform base, underwater drilling platform and drilling pump base and the like; auxiliary equipment, generally includes wellhead blowout preventer, air compression equipment, auxiliary power generation equipment, auxiliary hoisting equipment, wellhead tool and movable house and the like.

[0003] In the process of drilling and tripping operation, when the thread between the drill and the drill is rotated and pulled up, mud splash phenomenon often occurs due to pressure difference. In order to prevent mud splash, blowout prevention structure is used for protection, which plays a role in collecting mud, maintaining site hygiene and protecting site operators. The traditional blowout prevention structure is formed by hinging two housings, equipped with manual locking handle and the like components, and provided with a fixed diameter drill tool hole penetrating up and down. In use, the blowout prevention structure is clamped on the drill, and the thread connected to the drill is located in the blowout prevention structure, then the mud on the inner wall of the drill is sprayed into the blowout prevention structure by rotating to achieve the purpose of preventing mud splash.

[0004] However, the traditional blowout prevention structure for drill blowout prevention still has certain deficiencies:

[0005] (1) There are many different sizes of drills in the field of oil field operation, and it is often necessary to prepare a plurality of different sizes of blowout prevention structures. The preparation process of a plurality of blowout prevention structures and the placement are quite cumbersome, the installation efficiency is greatly reduced, and the applicability of the blowout prevention structure is reduced;

[0006] (2) The conventional blowout preventer structure is usually suspended on one side of the drilling machine through a rope, when it is needed to be used, the worker moves the blowout preventer structure to the outside of the drilling tool, then installs it on the drilling tool for use by operating the two articulated housings, this separate setting mode not only makes the blowout preventer structure itself occupy a large area, but also forms an additional obstacle around the drilling machine, thereby reducing the space utilization and making the operation area appear crowded;

[0007] In view of these problems, a high-torque screw drill is designed to facilitate the installation of the blowout preventer structure and is convenient to install, so as to prevent mud splashing, reduce the occupied area, and ultimately improve the overall operation performance. SUMMARY

[0008] In order to overcome the low applicability of the existing oil field drilling operation screw drill blowout preventer device, one of the purposes of the present application is to provide a high-torque screw drill.

[0009] One of the purposes of the present application is achieved by adopting the following technical scheme: a high-torque screw drill, comprising a screw drill body, a drilling machine beam, a lifting mechanism and a blowout preventer mechanism: a connecting rod is rotatably connected below the drilling machine beam, the connecting rod is threadedly installed with the screw drill body, the blowout preventer mechanism is installed on the lifting mechanism, the blowout preventer mechanism comprises a blowout preventer sleeve and first and second clamping assemblies symmetrically arranged inside the blowout preventer sleeve; the first clamping assembly comprises a fixed ring fixedly connected to the inner wall of one side of the blowout preventer sleeve, a support shaft fixedly arranged on the outer wall of the blowout preventer sleeve, a spring fixedly arranged on the outer wall of the support shaft, a movable sleeve movably connected to the outer wall of the support shaft, an adjusting plate fixedly arranged on one end of the movable sleeve, a compression ring movably connected to the outer wall of the adjusting plate, a groove fixedly arranged on one side of the fixed ring, a screw rotatably connected to the inner wall of the groove, a moving plate threadedly connected to the outer wall of the screw, and an elastic rubber band with an opening detachably installed on the inner wall of the fixed ring, the outer wall of the movable sleeve is provided with a slot, the movable sleeve is slidably connected to the outer wall of the support shaft through the slot, the movable sleeve is used to protect the spring, a through hole is formed in the lower side wall of the blowout preventer sleeve, a lead-out pipe is fixedly connected to the inner wall of the through hole, and a connecting pipe is inserted into the lead-out pipe. The blowout preventer mechanism is conveniently installed at the interface between the connecting rod and the screw drill body, so that the mud on the upper part of the inner wall of the screw drill body can be led out into the blowout preventer sleeve, and the mud can be led out into the mud circulating system through the lead-out pipe and the connecting pipe for recycling, the blowout preventer mechanism avoids mud splashing on the drilling platform to pollute the drilling platform and avoids the worker from slipping down, thereby improving the safety, and the blowout preventer mechanism can be adapted to connecting rods and screw drill bodies of different sizes within a certain range, thereby effectively increasing the application range of the blowout preventer mechanism.

[0010] According to the high torque screw drill, the screw drill body is composed of a motor assembly, a universal shaft assembly, a transmission shaft assembly and a drill bit, and is convenient for oil field drilling operation.

[0011] According to the high torque screw drill, the adjusting plate is composed of a vertical part one, an inclined part and a vertical part two, and the extrusion ring slides on the inclined part.

[0012] According to the high torque screw drill, the structure and working principle of the second clamping assembly are matched with those of the first clamping assembly, and the blowout prevention mechanism is conveniently installed and limited on the outer wall of the connecting rod and the screw drill body.

[0013] According to the high torque screw drill, the screw rod penetrates through one side of the fixed ring and is rotationally connected with the fixed ring, and one end of the screw rod is fixedly connected with a knob, so that the screw rod is conveniently driven to rotate.

[0014] According to the high torque screw drill, the lifting mechanism comprises an installation plate symmetrically installed on the drilling machine beam, a servo motor fixedly connected to one side of the installation plate, a rotating shaft fixedly connected to the output end of the servo motor, the rotating shaft penetrating through the installation plate and rotationally connected with the installation plate, a winding disc fixedly connected to the outer surface of the rotating shaft, a belt wound on the outer surface of the winding disc, a hook movably connected to the lower surface of the belt, and a limiting block rotationally connected to the upper surface of one side of the hook, so that the position of the blowout prevention mechanism is conveniently lifted, and the blowout prevention mechanism is conveniently moved to the interface between the connecting rod and the screw drill body for use.

[0015] According to the high torque screw drill, a control switch is arranged on one side of the screw drill body and is electrically connected with the servo motor, so that the servo motor is conveniently controlled to start and stop.

[0016] According to the high torque screw drill, the installation block is fixedly connected to the side of the blowout prevention sleeve close to the hook, the mounting hole is arranged on the upper surface of the installation block, the fixed plates are symmetrically fixedly connected to the upper surface of one side of the hook, the damping rotating shaft is rotationally connected to one side of the fixed plate, and the limiting block is fixedly connected with the damping rotating shaft.

[0017] According to the high torque screw drill, the mounting seat is fixedly connected to the upper surface of the installation plate, the screw holes are symmetrically arranged in the side wall of one side of the mounting seat, the bolts are threadedly connected with the inner wall of the screw holes, the bolts penetrate through the drilling machine beam and are threadedly connected with the drilling machine beam, and the nuts are threadedly connected with the outer surface of one side of the bolts, so that the lifting mechanism is conveniently assembled on the drilling machine beam for use, and the installation and disassembly are convenient, and the installation convenience is improved.

[0018] According to the high-torque screw drill, the blowout preventer set is arranged outside the screw drill body.

[0019] The above-mentioned scheme has the beneficial effects that:

[0020] 1. By arranging the blowout preventer mechanism, the blowout preventer mechanism can be installed on the connecting rod and the outer wall of the screw drill body in a certain range through cooperation of multiple components of the blowout preventer mechanism, so that the blowout preventer mechanism is quickly installed at the mud discharge interface for use. Compared with the existing hinged installation mode, the new installation mode is more convenient to operate, simplifies the installation process and improves the installation convenience, and effectively increases the application range of the blowout preventer mechanism.

[0021] 2. By arranging the lifting mechanism, the blowout preventer mechanism is conveniently moved to the interface between the connecting rod and the screw drill body for installation and use, and when not in use, the blowout preventer mechanism can be moved below the drilling machine beam, so that the integration is higher. The blowout preventer mechanism is generally hung on one side by a rope and placed separately, and then moved over for use. Compared with the prior art, the lifting mechanism can lift the blowout preventer mechanism, thereby reducing the floor area and improving the space utilization.

[0022] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following and / or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0023] The application will be further described below in conjunction with the drawings and embodiments;

[0024] Figure 1 It is a schematic diagram of the overall structure of the high-torque screw drill of the application;

[0025] Figure 2 It is a schematic diagram of the connecting rod of the high-torque screw drill of the application;

[0026] Figure 3 It is a schematic diagram of the screw drill body of the high-torque screw drill of the application;

[0027] Figure 4 It is a schematic diagram of the lifting mechanism of the high-torque screw drill of the application;

[0028] Figure 5 It is a schematic diagram of the Figure 4 enlarged structure at A in the middle;

[0029] Figure 6 It is a schematic diagram of the structure of the screw bolt of the high-torque screw drill of the application;

[0030] Figure 7 Structure diagram of the blowout preventer of the high-torque screw drill of the present application;

[0031] Figure 8 Structure diagram of the blowout preventer of the high-torque screw drill of the present application Figure 7 Structure diagram of the blowout preventer of the high-torque screw drill of the present application;

[0032] Figure 9 Structure diagram of the screw rod of the high-torque screw drill of the present application;

[0033] Figure 10 Structure diagram of the elastic rubber band of the high-torque screw drill of the present application.

[0034] Legend:

[0035] 1, screw drill body; 101, motor assembly; 102, universal shaft assembly; 103, transmission shaft assembly; 104, drill bit; 2, drilling machine beam; 3, lifting mechanism; 31, mounting plate; 32, servo motor; 33, rotating shaft; 34, reel; 35, belt; 36, hook; 37, limiting block; 4, blowout preventer; 41, blowout preventer sleeve; 42, first clamping assembly; 421, fixed ring; 422, spring; 423, support shaft; 424, moving sleeve; 425, adjusting plate; 4251, vertical part one; 4252, inclined part; 4253, vertical part two; 426, extrusion ring; 427, groove; 428, screw rod; 429, moving plate; 420, elastic rubber band; 43, second clamping assembly; 5, connecting rod; 6, through hole; 7, lead-out pipe; 8, connecting pipe; 9, knob; 10, control switch; 11, mounting block; 12, mounting hole; 13, fixed plate; 14, damping rotating shaft; 15, mounting seat; 16, threaded hole; 17, bolt; 18, nut; 19, slot; 20, blowout preventer group. DETAILED DESCRIPTION

[0036] This part will describe the specific embodiments of the present application in detail, the preferred embodiments of the present application are shown in the drawings, the role of the drawings is to supplement the description of the text part with figures, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the present application, but it cannot be understood as a limitation on the protection scope of the present application.

[0037] Reference Figures 1-10The utility model provides a high torque screw drill, including screw drill body 1, drilling machine crossbeam 2, lifting mechanism 3 and blowout preventer 4: the lower side of drilling machine crossbeam 2 is rotatably connected with connecting rod 5, and connecting rod 5 is screw installed with screw drill body 1, and blowout preventer 4 is installed on lifting mechanism 3, and blowout preventer 4 includes blowout preventer sleeve 41 and the first clamping assembly 42 and the second clamping assembly 43 that are symmetrically arranged inside blowout preventer sleeve 41, the first clamping assembly 42 includes the fixed ring 421 that is fixedly connected in the inner wall of one side of blowout preventer sleeve 41, the support shaft 423 that is fixed in the outer wall of blowout preventer sleeve 41, the spring 422 that is fixed in the outer wall of support shaft 423, the mobile sleeve 424 that is movably connected in the outer wall of support shaft 423, the adjusting plate 425 that is fixed in one end of mobile sleeve 424, the extrusion ring 426 that is movably connected in the outer wall of adjusting plate 425, the groove 427 that is fixed in one side of fixed ring 421, the screw 428 that is rotatably connected in the inner wall of groove 427, the moving plate 429 that is screw connected in the outer wall of screw 428 and the elastic rubber rubber band 420 with opening that is detachably installed in the inner wall of fixed ring 421, the outer wall of mobile sleeve 424 is provided with the slot 19, and mobile sleeve 424 is slidably connected in the outer wall of support shaft 423 through slot 19, and mobile sleeve 424 is used to protect spring 422, and the lower side of the lateral wall of blowout preventer sleeve 41 is provided with through -hole 6, the inner wall of through -hole 6 is fixedly connected with the lead -out pipe 7, and the inner wall of lead -out pipe 7 is inserted with connecting pipe 8.

[0038] In this embodiment, the lifting mechanism 3 is installed on the drilling machine beam 2, the blowout prevention mechanism 4 is installed with the lifting mechanism 3, and the mud in the upper part of the inner wall of the screw drill body 1 needs to be discharged, but the existing blowout prevention mechanism 4 is hinged, that is, two housings are hingedly installed at the interface of the connecting rod 5 and the screw drill body 1, to avoid a large splash area when the mud is discharged to pollute the drilling platform, and to avoid workers from slipping, but this installation method is inconvenient to use, and is only convenient to install outside the screw drill body 1 which is matched in size with the inner wall, and the applicability is not high. When the mud in the upper part of the inner wall of the screw drill body 1 needs to be discharged, the blowout prevention mechanism 4 is quickly moved downward to the interface of the connecting rod 5 and the screw drill body 1 through the lifting mechanism 3, and then the screw drill body 1 and the connecting rod 5 are clamped through the first clamping assembly 42 and the second clamping assembly 43 respectively, so that the blowout prevention sleeve 41 is quickly installed, and can be adapted to connecting rods 5 and screw drill bodies 1 of different sizes within a certain range, thereby increasing the application range of the blowout prevention mechanism 4. At the same time, when the first clamping assembly 42 and the second clamping assembly 43 are adjusted and clamped, the elastic rubber rubber band 420 is a high-elasticity sealing material with good rebound and extension performance. When the connecting rod 5 passes through the elastic rubber rubber band 420 from above and the screw drill body 1 passes through the elastic rubber rubber band 420 from below, the opening of the elastic rubber rubber band 420 is consistent with the outer diameter of the connecting rod 5 and the screw drill body 1, and the elastic rubber rubber band 420 can be deformed. The elastic rubber rubber band 420 can seal the gap between the connecting rod 5 and the outer wall of the screw drill body 1, so that the mud does not flow out of the gap, and the mud in the upper part of the inner wall of the screw drill body 1 is sprayed into the blowout prevention sleeve 41 through the connecting rod 5 and the connection, and then discharged to the mud circulating system through the discharge pipe 7 and the connecting pipe 8 for recycling.

[0039] Specifically, the screw drill body 1 is composed of a motor assembly 101, a universal shaft assembly 102, a transmission shaft assembly 103 and a drill bit 104.

[0040] In this embodiment, the motor assembly 101, the universal shaft assembly 102, the transmission shaft assembly 103 and the drill bit 104 are convenient for offshore or land oil exploitation, the motor assembly 101, the universal shaft assembly 102 and the transmission shaft assembly 103 transmit torque to the drill bit 104 for oil exploitation work, and the use is convenient (it should be noted that the working principle of the screw drill body 1 is consistent with that of the screw drill body 1 on the market, so detailed discussion is not performed).

[0041] Specifically, the adjusting plate 425 is composed of a vertical part one 4251, an inclined part 4252 and a vertical part two 4253, and the extrusion ring 426 slides on the inclined part 4252.

[0042] In the embodiment, the pressing ring 426 can move on the inclined part 4252, so as to press the adjusting plate 425 during the movement, so as to facilitate clamping the screw drill body 1 of different sizes.

[0043] Specifically, the structure and working principle of the second clamping assembly 43 are matched with the structure and working principle of the first clamping assembly 42.

[0044] In the embodiment, the second clamping assembly 43 is used for clamping the connecting rod 5 of different sizes within a certain range, and the first clamping assembly 42 is used for clamping the screw drill body 1 of different sizes within a certain range. The blowout prevention mechanism 4 can be stably installed at the interface between the connecting rod 5 and the screw drill body 1 by the first clamping assembly 42 and the second clamping assembly 43, so as to be used for protection, and the installation stability and efficiency of the blowout prevention mechanism 4 are effectively improved.

[0045] Specifically, the screw rod 428 penetrates through one side of the fixed ring 421 and is rotationally connected with the fixed ring 421, and one end of the screw rod 428 is fixedly connected with the knob 9.

[0046] In the embodiment, the knob 9 is installed and arranged, and the screw rod 428 can be driven to rotate by rotating the knob 9, so as to be used for rotation.

[0047] Specifically, the lifting mechanism 3 includes the mounting plate 31 symmetrically installed on the drilling machine beam 2, one side of the mounting plate 31 is fixedly connected with the servo motor 32, the output end of the servo motor 32 is fixedly connected with the rotating shaft 33, the rotating shaft 33 penetrates through the mounting plate 31 and is rotationally connected with the mounting plate 31, the outer surface of the rotating shaft 33 is fixedly connected with the winding disc 34, the outer surface of the winding disc 34 is wound with the belt 35, the lower surface of the belt 35 is movably connected with the hook 36, and the upper surface of one side of the hook 36 is rotationally connected with the limiting block 37.

[0048] In the embodiment, the lifting mechanism 3 is installed and arranged, so as to facilitate the quick use of the blowout prevention mechanism 4. The servo motor 32 is started to drive the winding disc 34 to rotate through the rotating shaft 33, so as to lower the belt 35 to drive the blowout prevention mechanism 4 to move downward on the outer surface of the connecting rod 5 and the screw drill body 1, so as to quickly move the blowout prevention mechanism 4 to the interface between the connecting rod 5 and the screw drill body 1 for blowout prevention. Compared with the existing blowout prevention mechanism 4 in the form of hinged connection, the blowout prevention mechanism 4 can be quickly installed at the interface between the connecting rod 5 and the screw drill body 1 without locking, the installation efficiency is effectively improved, and the convenience of use is improved.

[0049] Specifically, one side of the screw drill body 1 is provided with the control switch 10, and the control switch 10 is electrically connected with the servo motor 32.

[0050] In the embodiment, the control switch 10 is used to drive the servo motor 32 to start, so as to control the servo motor 32 conveniently.

[0051] Specifically, the mounting block 11 is fixedly connected to the side of the blowout preventer sleeve 41 close to the hook 36, the mounting hole 12 is arranged on the upper surface of the mounting block 11, the fixed plate 13 is fixedly connected to the upper surface of the side of the hook 36, the damping rotating shaft 14 is rotatably connected to the side of the fixed plate 13, and the limiting block 37 is fixedly connected to the damping rotating shaft 14.

[0052] In the embodiment, the hook 36 is stably mounted on the blowout preventer sleeve 41, the lifting mechanism 3 and the blowout preventer sleeve 41 are assembled and used through the hook 36 and the limiting block 37, and the convenient assembly and use are achieved.

[0053] Specifically, the mounting plate 31 is fixedly connected to the mounting seat 15, the screw holes 16 are symmetrically arranged on the side wall of the mounting seat 15, the bolts 17 are threadedly connected to the inner walls of the screw holes 16, the bolts 17 pass through the drilling machine beam 2 and are threadedly connected to the drilling machine beam 2, and the nuts 18 are threadedly connected to the outer surfaces of the sides of the bolts 17.

[0054] In the embodiment, the mounting seat 15 is mounted on the drilling machine beam 2 through the screw holes 16, the bolts 17 and the nuts 18, so that the lifting mechanism 3 is conveniently mounted on the drilling machine beam 2 for use, and the mounting and dismounting are convenient.

[0055] Specifically, the blowout preventer group 20 is further included, and the blowout preventer group 20 is arranged on the outer side of the screw drill body 1.

[0056] In the embodiment, the blowout preventer group 20 is installed below the land drilling platform or below the drilling platform of the sea exploitation ship. The screw drill body 1 can pass through the blowout preventer group 20, and when the wellhead pressure changes, the blowout preventer group 20 can play a blowout prevention role to prevent mud from being sprayed or the wellhead from failing.

[0057] Working principle: first, the lifting mechanism 3 is installed on the drill beam 2, the blowout prevention mechanism 4 is installed with the lifting mechanism 3, and the two elastic rubber bands 420 matched with the screw drill body 1 and the connecting rod 5 are installed on the fixed ring 421. The elastic rubber band 420 is made of rubber material and can be bent and deformed, so that the elastic rubber band 420 can be clamped on the fixed ring 421. In order to ensure the installation stability of the elastic rubber band 420 and the fixed ring 421, holes can be added on the elastic rubber band 420 and the fixed ring 421 to enhance the installation stability between the two by using screws or limiting parts. The overall diameter of the elastic rubber band 420 is matched with the fixed ring 421, and the opening size of the elastic rubber band 420 is different. The opening size of the elastic rubber band 420 matched with the size of the screw drill body 1 and the connecting rod 5 can be selected. When the mud in the upper part of the inner wall of the screw drill body 1 needs to be discharged, the servo motor 32 is started by controlling the switch 10, and the servo motor 32 is started by rotating the rotating shaft 33 to drive the winding disc 34 to rotate and extend the belt 35. The belt 35 moves downward and drives the blowout prevention sleeve 41 to move downward on the outer surface of the connecting rod 5, so that the blowout prevention sleeve 41 moves to the interface between the connecting rod 5 and the screw drill body 1. When the blowout prevention sleeve 41 moves downward on the outer wall of the connecting rod 5, the connecting rod 5 passes through the elastic rubber band 420 (the opening size of the selected elastic rubber band 420 is consistent with the diameter size of the connecting rod 5) and seals the gap between the connecting rod 5 and the outer wall by using the deformation of the elastic rubber band 420, so as to avoid impurities and mud from entering or flowing out from the gap;

[0058] Then the blowout prevention sleeve 41 is stably installed through the first clamping assembly 42 and the second clamping assembly 43. The screw rod 428 is rotated by rotating the knob 9, the moving plate 429 is moved on the outer surface of the screw rod 428, the moving plate 429 is moved to drive the extrusion ring 426 to move on the inclined part 4252, and the four adjusting plates 425 are stretched and the springs 422 are stretched at the same time, so that the four adjusting plates 425 are in contact with the outer wall of the screw drill body 1 and clamp the screw drill body 1. The second clamping assembly 43 is clamped on the outer wall of the connecting rod 5, which is consistent with the clamping limiting mode of the screw drill body 1, so as to stably install the blowout prevention mechanism 4 at the mud discharge interface, and can be adapted to connecting rods 5 and screw drill bodies 1 of different sizes within a certain range, thereby increasing the application range of the blowout prevention mechanism 4;

[0059] After the blowout preventer 4 is installed, the connecting rod 5 is driven to rotate and rise by an external power lifting device, at this time, the staff holds the screw drill body 1 to prevent it from rotating, and separates the connecting rod 5 and the screw drill body 1, so that the mud on the inner wall of the upper part of the screw drill body 1 is discharged into the blowout preventer sleeve 41, and then the mud is discharged into the mud circulating system through the discharge pipe 7 and the connecting pipe 8 for recycling, thereby improving the practicability and installation efficiency of the blowout preventer 4 compared with the prior art, compared with the blowout preventer 4 of the hinged installation mode, the installation process is simplified and the installation convenience is improved, and the use is convenient.

[0060] The embodiments of the present application are described in detail above in combination with the drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the present application.

Claims

1. A high-torque screw drill, characterized by, Including screw drill body (1), drilling beam (2), lifting mechanism (3) and blowout preventer (4): the lower side of the drilling beam (2) is rotatably connected with connecting rod (5), the connecting rod (5) is threadedly installed with the screw drill body (1), the blowout preventer (4) is installed on the lifting mechanism (3), the blowout preventer (4) includes blowout preventer sleeve (41) and first clamping assembly (42) and second clamping assembly (43) symmetrically arranged inside the blowout preventer sleeve (41); The first clamping assembly (42) includes a fixed ring (421) fixedly connected to the inner wall of one side of the blowout preventer sleeve (41), a support shaft (422) fixedly arranged on the outer wall of the blowout preventer sleeve (41), a spring (423) fixedly arranged on the outer wall of the support shaft (422), a movable sleeve (424) movably connected to the outer wall of the support shaft (422), an adjusting plate (425) fixedly arranged on one end of the movable sleeve (424), an extrusion ring (426) movably connected to the outer wall of the adjusting plate (425), a groove (427) fixedly arranged on one side of the fixed ring (421), a screw rod (428) rotatably connected to the inner wall of the groove (427), a moving plate (429) threadedly connected to the outer wall of the screw rod (428), and a springy rubber band (420) with an opening detachably mounted on the inner wall of the fixed ring (421), the outer wall of the movable sleeve (424) is provided with a slot (19), the movable sleeve (424) is slidably connected to the outer wall of the support shaft (422) through the slot (19), the movable sleeve (424) is used for protecting the spring (423), the lower side of the blowout preventer sleeve (41) is provided with a through hole (6) in the side wall, the inner wall of the through hole (6) is fixedly connected with a lead-out pipe (7), and the inner wall of the lead-out pipe (7) is inserted with a connecting pipe (8).

2. A high torque screw-in drill according to claim 1, characterized in that The screw drill body (1) is composed of a motor assembly (101), a universal shaft assembly (102), a transmission shaft assembly (103) and a drill bit (104).

3. A high torque screw-in drill according to claim 1, characterized in that The adjusting plate (423) is composed of a vertical part one (4251), an inclined part (4252) and a vertical part two (4253), and the extrusion ring (426) slides on the inclined part (4252).

4. A high torque screw-in drill according to claim 1, characterized in that The structure and working principle of the second clamping assembly (43) are adapted to the mechanism and working principle of the first clamping assembly (42).

5. A high torque screw-in drill according to claim 1, characterized in that The screw rod (428) penetrates one side of the fixed ring (421) and is rotatably connected with the fixed ring (421), and one end of the screw rod (428) is fixedly connected with a knob (9).

6. A high torque screw-in drill according to claim 1, characterized in that The lifting mechanism (3) includes a mounting plate (31) symmetrically mounted on the drilling machine beam (2), one side of the mounting plate (31) is fixedly connected with a servo motor (32), the output end of the servo motor (32) is fixedly connected with a rotating shaft (33), the rotating shaft (33) penetrates through the mounting plate (31) and is in rotary connection with the mounting plate (31), the outer surface of the rotating shaft (33) is fixedly connected with a winding reel (34), the outer surface of the winding reel (34) is wound with a belt (35), the lower surface of the belt (35) is movably connected with a hook (36), and the upper surface of one side of the hook (36) is rotatably connected with a limiting block (37).

7. A high torque screw-in drill according to claim 6, characterized in that One side of the screw drill body (1) is provided with a control switch (10), and the control switch (10) is in electrical connection with the servo motor (32).

8. A high torque screw-in drill according to claim 6, characterized in that The anti-spray sleeve (41) is fixedly connected with a mounting block (11) on one side close to the hook (36), the upper surface of the mounting block (11) is provided with a mounting hole (12), the upper surface of one side of the hook (36) is fixedly connected with a fixed plate (13) symmetrically, the fixed plate (13) is rotatably connected with a damping rotating shaft (14) on one side, and the limiting block (37) is fixedly connected with the damping rotating shaft (14).

9. A high torque screw-in drill according to claim 6, characterized in that The upper surface of the mounting plate (31) is fixedly connected with a mounting seat (15), the sidewall of one side of the mounting seat (15) is symmetrically provided with a threaded hole (16), the inner wall of the threaded hole (16) is threadedly connected with a bolt (17), the bolt (17) penetrates through the drilling machine beam (2) and is in threaded connection with the drilling machine beam (2), and the outer surface of one side of the bolt (17) is threadedly connected with a nut (18).

10. A high torque screw-in drill according to claim 1, characterized in that It also includes a blowout preventer group (20), which is arranged outside the screw drill body (1).

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