CN221119845U

CN221119845U - Multifunctional iron driller

Info

Publication number: CN221119845U
Application number: CN202322690307.6U
Authority: CN
Inventors: 赵强; 李学军; 杨自升; 张天宇
Original assignee: Beijing Jiejie West Technology Co ltd
Current assignee: Beijing Jiejie West Technology Co ltd
Priority date: 2023-10-08
Filing date: 2023-10-08
Publication date: 2024-06-11
Anticipated expiration: 2033-10-08

Abstract

The utility model relates to a multifunctional iron driller, which comprises an iron driller main body, and further comprises a screw thread oiling device, a buckling device and a blowout prevention box which are arranged on the iron driller main body; the screw thread oiling device can be close to the pipe tool to oil the screw threads at the top end of the pipe tool; when the pipe fitting is clamped by the buckling device, the pipe fitting can be limited transversely; the blowout prevention box can encircle the joint of the two pipes after the iron driller main body breaks out the two pipes, and collect mud in the pipes. The multifunctional iron driller has the advantages that the multifunctional iron driller can form an integrated operation mode of oiling threads of the pipe, buckling the pipe oppositely and buckling the pipe, the mechanization degree is high, the buckling operation efficiency and the safety are greatly improved, the problem of slurry collection after the buckling can be solved through the blowout prevention box, and the overall operation efficiency is ensured.

Description

Multifunctional iron driller

Technical Field

The utility model relates to the technical field of petroleum drilling, in particular to a multifunctional iron roughneck.

Background

With the development of petroleum and gas drilling, a plurality of large-scale pipe operation devices (such as top drives, iron drillers, drilling floor manipulators and the like) are increasingly widely used. The iron driller is large wellhead auxiliary equipment for screwing and unscrewing the pipe tool, replaces manpower to perform screwing, screwing and unscrewing operations, and greatly improves working efficiency.

At present, aiming at the problem of slurry collection after pipe tool shackle, the patent application with the application number of CN202111042910.2 discloses a continuous rotary multifunctional iron driller, which comprises a main clamp and a back clamp which are arranged on a supporting sliding frame, wherein the main clamp comprises a main clamp right half body and a main clamp left half body which can be opened and closed, hydraulic oil pump cylinders are arranged at the upper parts of the main clamp right half body and the main clamp left half body, and a slurry lower cover plate is arranged at the lower part; the back-up wrench comprises a back-up wrench right side half body and a back-up wrench left side half body which can be opened and closed, the outer edges and the tops of the back-up wrench right side half body and the back-up wrench left side half body are respectively provided with a mud splash-proof rubber plate and a mud upper cover plate, the rear side wall of a back-up wrench moving frame is connected with a moving hydraulic cylinder connected to a supporting sliding frame, and a coupling compensation hydraulic cylinder is arranged between the back-up wrench moving frame and a main wrench moving frame. The device can ensure the use function of an iron driller and simultaneously give consideration to the slurry recovery function after the breaking out, but only considers the operation efficiency after the breaking out. Before the conventional screwing operation, the pipe screw threads are required to be oiled, and then the pipe screwing operation is performed, because the wellhead position is limited, the two processes can be performed only by the iron driller yielding the wellhead position, and the screwing operation is performed manually, so that the labor intensity is high, the safety is low, and the screwing operation efficiency is greatly influenced.

Therefore, a multifunctional iron roughneck with higher operation efficiency and higher safety is needed.

Disclosure of utility model

First, the technical problem to be solved

In view of the above-mentioned drawbacks and shortcomings of the prior art, the present utility model provides a multifunctional iron roughneck, which solves the technical problems of low efficiency and low safety of the fastening operation in the prior art.

(II) technical scheme

In order to achieve the above purpose, the main technical scheme adopted by the utility model comprises the following steps:

the utility model provides a multifunctional iron driller, which further comprises a screw thread oiling device, a buckling device and an blowout prevention box, wherein the screw thread oiling device, the buckling device and the blowout prevention box are arranged on the iron driller main body; after the pipe is in place, the screw thread oiling device can be close to the pipe to oil the screw threads at the top end of the pipe; when the pipe fitting is clamped by the buckling device, the pipe fitting can be limited transversely; the blowout prevention box can encircle the joint of two pipes after the iron driller main body breaks out the two pipes which are connected, and collect mud in the pipes.

Optionally, the screw thread oiling station includes first support, lift driver, sliding seat and oil spout assembly. The first support install in the iron roughneck main part, the lift driver install in the first support, support in the first support has the slide bar that extends along vertical direction, the sliding seat can install with sliding from top to bottom in the slide bar, the oil spout assembly install in the top of sliding seat, the lift driver connect in the sliding seat, in order to drive the sliding seat is followed the slide bar slides from top to bottom, the oil spout assembly can by the through-hole at sliding seat top to the screw thread fat liquoring of pipe utensil.

Optionally, the sliding seat is internally provided with a cavity with a downward opening, and the through hole is communicated with the cavity. The oil injection assembly comprises a main body, at least two oil injection nozzles and at least two oil inlet connectors. The main body is mounted at the top of the sliding seat, the two oil spraying nozzles are mounted on the main body, the two oil spraying nozzles are symmetrical in orientation, the two oil spraying nozzles face the cavity through the through holes, the two oil inlet connectors are mounted on the main body, and the two oil spraying nozzles are respectively communicated with the two oil inlet connectors.

Optionally, an oil injection switch is further arranged on the first bracket, and the oil injection switch is communicated with the oil injection assembly.

Optionally, the buckling device comprises a second bracket, two clamping arms, a driving mechanism and a positioning device. The two clamping arms are rotatably mounted on the second support, the driving mechanism is mounted on the second support, and the driving mechanism is connected to the two clamping arms so as to drive the two clamping arms to rotate in a vertical plane to perform clamping and releasing actions. The clamping parts of the two clamping arms can only transversely limit the drilling tool when in clamping action. The second support can penetrate through the positioning device in a back-and-forth moving mode, and the positioning device can position the second support. The second bracket is arranged on the iron roughneck main body through the positioning device.

Optionally, the positioning device comprises a mounting member and a positioning member. The locating piece is rotatably installed on the installation piece, the second support can penetrate through the installation piece in a front-back moving mode, and the locating piece can rotate to abut against the second support in a vertical plane so as to locate the second support. The mounting member is secured to the iron roughneck body.

Optionally, a guide rod extending in the vertical direction is supported in the second bracket. The driving mechanism comprises a telescopic driver, a transmission piece and two pull rods. The telescopic driver is arranged in the second bracket, the transmission piece is connected to the guide rod in a vertically sliding manner, the transmission piece is rotatably connected with the two clamping arms through the two pull rods, and the telescopic driver is connected to the transmission piece. The telescopic driver drives the transmission piece to slide up and down, and the transmission piece drives the two clamping arms to rotate in a vertical plane through the two pull rods to perform clamping and releasing actions.

Optionally, the blowout prevention box comprises two arc-shaped box bodies and an opening and closing driver. The first side edges of the two arc-shaped box bodies are rotatably connected, and two ends of the opening and closing driver are arranged on the two arc-shaped box bodies so as to drive the two arc-shaped box bodies to rotate in the horizontal plane to perform closing and opening actions. The two arc-shaped box bodies are arranged on the iron driller main body.

Optionally, the clamping part of arc box body is curved elastic sealing piece, two elastic sealing piece can the butt form elastic sealing ring, the round hole size in elastic sealing ring middle part is less than the cross section size of pipe utensil.

Optionally, a slurry discharging port is formed in the lower portion of the arc-shaped box body, and a slurry discharging pipe joint is arranged on the slurry discharging port.

(III) beneficial effects

The beneficial effects of the utility model are as follows:

according to the multifunctional iron driller provided by the utility model, the screw thread at the top end of the pipe tool is oiled through the screw thread oiling device, the pipe tool is transversely limited through the buckling device, the vertical lifting of the pipe tool is not limited, the pipe tool continues to descend and the pipe tool at the wellhead position is buckled, and the buckling operation is completed through the iron driller main body. Compared with the prior art, the multifunctional iron driller can form an integrated operation mode of oiling threads of the pipe, buckling the pipe oppositely and buckling the pipe, has high mechanization degree, greatly improves the buckling operation efficiency and safety, can solve the problem of slurry collection after the buckling is removed through the blowout prevention box, and ensures the overall operation efficiency.

Drawings

FIG. 1 is a schematic view of a structure in which a stabbing apparatus according to an embodiment of the present utility model is mounted to an iron roughneck body;

FIG. 2 is a schematic view of a blowout preventer mounted to an iron roughneck body according to an embodiment of the present utility model;

FIG. 3 is a schematic structural view of a screw thread oiling station in an embodiment of the utility model;

FIG. 4 is a schematic front view of a screw thread oiling station in an embodiment of the utility model;

FIG. 5 is a schematic view of section A-A of FIG. 4;

FIG. 6 is a schematic structural view of a buckle device according to an embodiment of the present utility model;

FIG. 7 is an enlarged view at A in FIG. 6;

FIG. 8 is a schematic view of another angle of the buckle device according to the embodiment of the present utility model;

fig. 9 is a schematic structural view of a blowout prevention cartridge according to an embodiment of the present utility model.

[ Reference numerals description ]

1: An iron roughneck body;

21: a first bracket; 211: a slide bar; 22: a sliding seat; 221: a through hole; 23: a lifting driver; 241: a main body; 242: an oil injection nozzle; 243: an oil inlet joint; 25: oil injection switch

3: A buttoning device; 31: a second bracket; 311: a guide rod; 312: a rack; 32: a clamp arm; 321: limiting idler wheels; 331: a mounting member; 332: a compression bar; 333: tooth blocks; 334: a compression bar locking pin; 335: a locking part; 341: a telescopic drive; 342: a transmission member; 343: a pull rod;

4: a blowout prevention box; 41: an arc-shaped box body; 42: an opening and closing driver; 43: a slurry discharging pipe joint.

Detailed Description

In order that the above-described aspects may be better understood, exemplary embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.

As shown in fig. 1 to 9, the present embodiment provides a multifunctional iron roughneck, which comprises an iron roughneck main body 1, a screw thread oiling device, a buckling device 3 and a blowout prevention box 4. The screw thread oiling device is arranged on the iron driller main body 1, and can be close to the pipe tool to oil the screw thread at the top end of the pipe tool. The buckling device 3 is arranged on the iron driller main body 1, and the buckling device 3 can only transversely limit the pipe tool when clamping the pipe tool. The blowout prevention box 4 is arranged on the iron driller main body 1, and the blowout prevention box 4 can collect slurry in the pipe tools by encircling the joint of the two pipe tools after the iron driller main body 1 breaks out the two pipe tools.

Specifically, the screw thread at the top end of the pipe tool is oiled through the screw thread oiling device, the pipe tool is transversely limited through the buckling device 3, the vertical lifting of the pipe tool is not limited, the pipe tool continuously descends to complete buckling with the pipe tool at the wellhead position, and the buckling operation is completed through the iron driller main body 1. Compared with the prior art, the multifunctional iron driller can form an integrated operation mode of oiling threads of the pipe, buckling the pipe and buckling the pipe, the buckling operation efficiency and the safety are greatly improved, the problem of slurry collection after the buckling can be solved through the blowout prevention box 4, and the overall operation efficiency is ensured.

Further, as shown in fig. 3 to 5, the screw oiling device includes a first bracket 21, a lifting driver 23, a sliding seat 22, and an oil injection assembly. The first support 21 is installed in the iron roughneck main body 1, the lifting driver 23 is installed in the first support 21, a sliding rod 211 extending along the vertical direction is supported in the first support 21, the sliding seat 22 is installed on the sliding rod 211 in a vertically sliding mode, the oil injection assembly is installed at the top end of the sliding seat 22, the lifting driver 23 is connected to the sliding seat 22 to drive the sliding seat 22 to slide up and down along the sliding rod 211, and the oil injection assembly can oil the screw threads of the pipe tool through a through hole 221 at the top end of the sliding seat 22. Wherein, still be equipped with oil spout switch 25 on the first support 21, oil spout switch 25 intercommunication oil spout assembly. Specifically, the inside of the slide block 22 has a cavity opened downward, and a through hole 221 at the top of the slide block 22 communicates with the cavity. The fuel injection assembly includes a main body 241, at least two fuel injection nozzles 242, and at least two fuel inlet joints 243. The main body 241 is mounted on the top of the sliding seat 22, two oil spraying nozzles 242 are mounted on the main body 241, the two oil spraying nozzles 242 are symmetrically oriented, the two oil spraying nozzles 242 are oriented into the cavity through the through holes 221, two oil inlet joints 243 are mounted on the main body 241, and the two oil spraying nozzles 242 are respectively communicated with the two oil inlet joints 243. The fuel injection switch 25 communicates with the fuel inlet joint 243. The pipe is threaded into the oil feed joint 243 via the oil spray switch 25. In this embodiment, one spray nozzle 242 faces downward left and the other spray nozzle 242 faces downward right under the front view, and the pipe thread can be sprayed into the cavity from the upper left and upper right of the through hole 221.

Further, as shown in fig. 6 to 8, the buckle device 3 includes a second bracket 31, two clip arms 32, a driving mechanism, and a positioning device. Two clamp arms 32 are rotatably mounted on the second bracket 31, a driving mechanism is mounted on the second bracket 31, and the driving mechanism is connected to the two clamp arms 32 to drive the two clamp arms 32 to rotate in a vertical plane to perform clamping and releasing actions. The clamping portions of the two clamping arms 32 can only limit the drilling tool transversely during clamping operation. The second bracket 31 is movably inserted into the positioning device, and the positioning device can position the second bracket 31. The second bracket 31 is mounted on the iron roughneck body 1 by a positioning device. The positioning device includes a mounting member 331 and a positioning member.

Further, as shown in fig. 6 and 8, the clamping portion of the clamping arm 32 is a limiting roller 321, the limiting roller 321 is rotatably mounted on the clamping arm body, and the rotation axis thereof is transversely oriented (in the front-rear direction), in this embodiment, the limiting roller 321 is rotatably mounted on the bottom of the clamping arm body. Through spacing gyro wheel 321, can realize horizontal spacing to the pipe fitting, but can not produce vertical spacing to the pipe fitting to avoid influencing the pipe fitting and descend the butt joint. The cross-sectional dimension of the limiting roller 321 is reduced and then increased along the axial direction thereof. Therefore, when the two limiting rollers 321 clamp the pipe tool, the transverse position of the pipe tool can be positioned so as to align the screw threads at the top of the pipe tool in the wellhead, and the buckling operation can be conveniently completed.

Further, as shown in fig. 6 and 7, the positioning device includes a mounting member 331 and a positioning member. The positioning piece is rotatably installed on the installation piece 331, and the second bracket 31 can be movably arranged on the installation piece 331 in a penetrating manner in the front-back direction (the direction close to the pipe is the front direction, the direction far away from the pipe is the rear direction), and the positioning piece can rotate to abut against the second bracket 31 in a vertical plane so as to position the second bracket 31. The mount 331 is fixed to the iron roughneck body 1. Specifically, the top of the second bracket 31 has a rack 312. The positioning piece comprises a pressing rod 332 and a tooth block 333, one end of the pressing rod 332 is rotatably installed at the top of the mounting piece 331, the tooth block 333 is located inside the mounting piece 331, and the tooth block 333 is connected with the pressing rod 332. The plunger 332 rotates in a vertical plane to raise and lower the tooth block 333, causing the tooth block 333 to move away from or engage a portion of the rack 312 located within the mount 331. Thereby, positioning of the second bracket 31 is achieved.

Further, as shown in fig. 6 and 7, the positioning member further includes a pressing bar locking pin 334, the top of the mounting member 331 has a locking portion 335, and when the tooth block 333 is engaged with the rack 312 of the second bracket 31, the pressing bar locking pin 334 can be inserted into the pressing bar 332 and the locking portion 335 to limit the pressing bar 332 to rotate in a vertical plane, so as to improve the stability of positioning the second bracket 31.

Further, as shown in fig. 6, a guide bar 311 extending in the vertical direction is supported in the second bracket 31. The drive mechanism comprises a telescopic drive 341, a transmission 342 and two tie rods 343. The telescopic driver 341 is installed in the second bracket 31, the transmission member 342 is connected to the guide rod 311 in a vertically sliding manner, the transmission member 342 is rotatably connected to the two clamping arms 32 through two pull rods 343, and the telescopic driver 341 is connected to the transmission member 342. The telescopic driver 341 drives the transmission member 342 to slide up and down, and the transmission member 342 drives the two clamping arms 32 to rotate in a vertical plane through the two pull rods 343 to perform clamping and releasing actions.

Further, as shown in fig. 9, the blowout prevention box 4 includes two arc-shaped box bodies 41 and an opening and closing driver 42. The first sides of the two arc-shaped boxes 41 are rotatably connected, the rotation axes of the arc-shaped boxes 41 are vertically oriented, and two ends of the opening and closing driver 42 are mounted on the two arc-shaped boxes 41 to drive the two arc-shaped boxes 41 to rotate in the horizontal plane to perform closing and opening actions. The clamping part of the arc-shaped box body 41 is an arc-shaped elastic sealing piece, the two elastic sealing pieces can be abutted to form an elastic sealing ring, and the size of a round hole in the middle of the elastic sealing ring is smaller than the cross section of the pipe. Two arcuate boxes 41 can be mounted on the iron roughneck body 1. Wherein, the lower part of the arc-shaped box body 41 is provided with a pulp discharging port, and the pulp discharging port is provided with a pulp discharging pipe joint 43. The slurry discharge port can be communicated with a slurry discharge pipe through a slurry discharge pipe joint 43 to drain slurry to a slurry collecting tank, so that the working face is kept clean, and the slurry waste is prevented. In this embodiment, the opening and closing driver 42 is a telescopic cylinder that can communicate with the air source of the rotating frame so that the telescopic cylinder is activated. The cross section of the arc-shaped case 41 (a cross section perpendicular to its axis) is arc-shaped, and the arc is the same as the arc of the elastic sealing piece. The elastic sealing sheets are mounted on the inner top and inner bottom of the arc-shaped box 41 through quick-pull pins so as to be convenient for replacement.

Further, in this embodiment, the second sides of the two arc-shaped boxes 41 are respectively provided with a locking buckle and a locking member, so that the two arc-shaped boxes 41 are limited to be opened after being closed, and the stability of the two arc-shaped boxes 41 after being closed is improved.

The working condition of the multifunctional iron driller provided in the specific embodiment is that the screwing operation is as follows: the lifting driver 23 of the screw thread oiling device drives the sliding seat 22 to slide downwards to drive the oil injection assembly to descend, the screw thread at the end part of the pipe enters the cavity of the sliding seat 22, the oil injection switch 25 is opened, the pipe thread grease is sprayed out through the oil injection port, enters the cavity through the through hole 221 at the top end of the sliding seat 22 and is attached to the inner thread of the screw thread, and oiling is completed. The second bracket 31 is adjusted back and forth according to the type of the target pipe tool, and then the gear block 333 is driven to descend and engage with the partial rack 312 in the mounting piece 331 by rotating the pressing rod 332 in the vertical plane, and the pressing rod 332 and the locking part 335 are inserted by the pressing rod locking pin 334. After the target drilling tool is in place, the transmission member 342 is driven by the telescopic driver 341 to slide downwards along the guide rod 311, the transmission member 342 pulls the two clamping arms 32 to rotate in the vertical plane through the two pull rods 343, the two limiting rollers 321 of the two clamping arms 32 clamp the target pipe fitting, and the target pipe fitting descends to complete buckling with the pipe fitting in the wellhead. After that, the button-up operation is completed by the iron roughneck body 1.

And (3) shackle operation: when the iron driller body is used for completing the shackle of the target pipe tool, the two arc-shaped box bodies 41 are driven to be closed through the telescopic cylinder, the two arc-shaped box bodies 41 are locked through the locking buckle and the locking piece, the elastic sealing sheets of the two arc-shaped box bodies 41 clamp the target drilling tool, the elastic sealing sheets receive the extrusion of the drilling tool to generate elastic deformation, the target drilling tool is lifted to a position away from an inlet through operation equipment, and in the operation process, slurry is drained to a slurry collecting tank through the slurry draining pipe. After the target drilling tool leaves the wellhead position, the elastic deformation of the elastic sealing piece is restored, the locking buckle is opened, and the two arc-shaped box bodies 41 are driven to be opened through the telescopic cylinder, so that the operation of the next target drilling tool is prepared.

In the description of the present utility model, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; may be a communication between two elements or an interaction between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature, which may be in direct contact with the first and second features, or in indirect contact with the first and second features via an intervening medium. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is level lower than the second feature.

In the description of the present specification, the terms "one embodiment," "some embodiments," "examples," "particular examples," or "some examples," etc., refer to particular features, structures, materials, or characteristics described in connection with the embodiment or example as being included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that alterations, modifications, substitutions and variations may be made in the above embodiments by those skilled in the art within the scope of the utility model.

Claims

1. A multifunctional iron driller, which comprises an iron driller main body (1) and is characterized in that,

The device also comprises a screw thread oiling device, a buckling device (3) and a blowout prevention box (4) which are arranged on the iron driller main body (1);

the screw thread oiling device can be close to the pipe tool to oil the screw threads at the top end of the pipe tool;

The buckling device (3) can only transversely limit the pipe when clamping the pipe;

The blowout prevention box (4) can encircle the joint of the two pipes after the iron driller main body (1) breaks out the two pipes, and collect slurry in the pipes.

2. The multi-purpose iron roughneck of claim 1, wherein,

The screw thread oiling device comprises a first bracket (21), a sliding seat (22), a lifting driver (23) and an oil injection assembly;

The utility model discloses a pipe tool, including iron roughneck main part (1), first support (21), lift driver (23) install in first support (21), support in first support (21) have along slide bar (211) that vertical direction extends, sliding seat (22) install in sliding bar (211) can slide from top to bottom, oil spout assembly install in the top of sliding seat (22), lift driver (23) connect in sliding seat (22), in order to drive sliding seat (22) follow slide bar (211) reciprocates, oil spout assembly can by through-hole (221) at sliding seat (22) top to the screw thread fat liquoring of pipe tool.

3. The multi-purpose iron roughneck of claim 2, wherein,

The sliding seat (22) is internally provided with a cavity with a downward opening, and the through hole (221) is communicated with the cavity;

The oil injection assembly comprises a main body (241), at least two oil injection nozzles (242) and at least two oil inlet joints (243);

The main body (241) is installed at the top of the sliding seat (22), two oil spraying nozzles (242) are installed in the main body (241), the directions of the two oil spraying nozzles (242) are symmetrical, the two oil spraying nozzles (242) face the cavity through the through holes (221), the two oil inlet connectors (243) are installed in the main body (241), and the two oil spraying nozzles (242) are respectively communicated with the two oil inlet connectors (243).

4. The multi-purpose iron roughneck of claim 2, wherein,

And the first bracket (21) is also provided with an oil injection switch (25), and the oil injection switch (25) is communicated with the oil injection assembly.

5. The multi-purpose iron roughneck of claim 1, wherein,

The buckling device (3) comprises a second bracket (31), two clamping arms (32), a driving mechanism and a positioning device;

Two clamping arms (32) are rotatably mounted on the second bracket (31), the driving mechanism is mounted on the second bracket (31), and the driving mechanism is connected to the two clamping arms (32) so as to drive the two clamping arms (32) to rotate in a vertical plane to perform clamping and releasing actions;

The clamping parts of the two clamping arms (32) can only transversely limit the drilling tool when performing clamping actions;

The second bracket (31) is movably arranged in the front-back direction and penetrates through the positioning device, and the positioning device can position the second bracket (31);

The second bracket (31) is arranged on the iron roughneck main body (1) through the positioning device.

6. The multi-purpose iron roughneck of claim 5, wherein,

The positioning device comprises a mounting piece (331) and a positioning piece;

The positioning piece is rotatably arranged on the mounting piece (331), the second bracket (31) can penetrate through the mounting piece (331) in a back-and-forth moving mode, and the positioning piece can rotate to abut against the second bracket (31) in a vertical plane so as to position the second bracket (31);

the mounting piece (331) is fixed on the iron roughneck body (1).

7. The multi-purpose iron roughneck of claim 5, wherein,

A guide rod (311) extending along the vertical direction is supported in the second bracket (31);

The driving mechanism comprises a telescopic driver (341), a transmission piece (342) and two pull rods (343);

The telescopic driver (341) is arranged in the second bracket (31), the transmission part (342) is connected to the guide rod (311) in a vertically sliding way, the transmission part (342) is rotatably connected with the two clamping arms (32) through the two pull rods (343), and the telescopic driver (341) is connected to the transmission part (342);

The telescopic driver (341) drives the transmission part (342) to slide up and down, and the transmission part (342) drives the two clamping arms (32) to rotate in a vertical plane through the two pull rods (343) to perform clamping and releasing actions.

8. The multi-purpose iron roughneck of claim 1, wherein,

The blowout prevention box (4) comprises two arc-shaped box bodies (41) and an opening and closing driver (42);

The first sides of the two arc-shaped box bodies (41) are rotatably connected, and two ends of the opening and closing driver (42) are arranged on the two arc-shaped box bodies (41) to drive the two arc-shaped box bodies (41) to rotate in a horizontal plane to perform closing and opening actions;

two arc box body (41) install in iron roughneck main part (1).

9. The multi-purpose iron roughneck of claim 8, wherein,

The clamping part of the arc-shaped box body (41) is an arc-shaped elastic sealing piece, the two elastic sealing pieces can be abutted to form an elastic sealing ring, and the size of a round hole in the middle of the elastic sealing ring is smaller than the cross section of the pipe.

10. The multi-purpose iron roughneck of claim 8, wherein,

The lower part of the arc-shaped box body (41) is provided with a pulp discharging port, and a pulp discharging pipe joint (43) is arranged on the pulp discharging port.