CN109779542B - Hydraulic pliers - Google Patents
Hydraulic pliers Download PDFInfo
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- CN109779542B CN109779542B CN201910195324.8A CN201910195324A CN109779542B CN 109779542 B CN109779542 B CN 109779542B CN 201910195324 A CN201910195324 A CN 201910195324A CN 109779542 B CN109779542 B CN 109779542B
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- 238000005096 rolling process Methods 0.000 claims description 11
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 17
- 229910052742 iron Inorganic materials 0.000 abstract description 9
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- 238000013461 design Methods 0.000 abstract description 2
- 238000005457 optimization Methods 0.000 abstract description 2
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- 238000001514 detection method Methods 0.000 description 3
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- 230000008569 process Effects 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
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- 238000005516 engineering process Methods 0.000 description 2
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- 230000033764 rhythmic process Effects 0.000 description 2
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- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
A hydraulic clamp relates to the field of oilfield workover tools. The hydraulic pliers comprise: the outer cylinder is vertically fixed on the drill floor; and the bottom end of the hydraulic clamp body is provided with a cylinder inserting stand column, the hydraulic clamp body can rotate around the cylinder inserting stand column, and the cylinder inserting stand column is fixedly sleeved in the outer cylinder. The outer cylinder of the hydraulic clamp is fixedly connected to the drill floor in advance, and the cylinder inserting upright post at the bottom end of the hydraulic clamp is fixedly sleeved in the outer cylinder, so that the hydraulic clamp can be quickly installed on the drill floor, and meanwhile, compared with the change of the screwing-off principle of an iron driller and the optimization design of the structure, the hydraulic clamp occupies less space of the drill floor.
Description
Technical Field
The invention relates to the field of oilfield workover tools, in particular to a hydraulic clamp.
Background
In the oil field drilling and well repairing process, the lifting and the unbuckling of the pipe column are key links in the lifting and the unbuckling operation, and the lifting and the unbuckling of the pipe column on the site of the overhaul operation at present are mainly finished by manually operating the traditional suspension type well repairing power hydraulic pliers through pushing and pulling, so that the problems of high labor intensity, high safety risk, severe operation environment and the like exist in the mode. In order to solve the problem of low automation degree of wellhead tripping equipment, in recent years, an iron driller technology with higher automation degree is tried to be applied to overhaul operation, but due to the difference of well repair and well drilling operation, the iron driller exposes the problems of large volume, heavy weight, low oil pipe tripping efficiency and the like in the well repair operation process, and industrial popularization and application cannot be carried out.
At present, an iron driller is adopted for automatic screwing-on and screwing-off of well workover operation, and related patents such as application numbers 201420056528.6, 201320648095.9 and 201620035131.8 adopt various arm support structural forms, and can realize telescopic and rotary actions to drive a clamp body to move to a target tubular column. The clamp body mainly comprises three parts, namely a turnbuckle clamp, a punching clamp and a back-up clamp, wherein the upper pipe column and the lower pipe column are respectively clamped by the clamping clamp and the turnbuckle clamp during working, the turnbuckle torque is applied by the turnbuckle clamp to realize screwing of the threads of the upper pipe column and the lower pipe column, and then the punching clamp applies the punching torque to the upper pipe column to further fasten the connection of the upper pipe column and the lower pipe column, so that the upper buckling operation of the upper pipe column and the lower pipe column is completed; the action flow is opposite when the shackle is operated.
As the patent number 200810012726.1 also discloses a structure of the hydraulic pliers, the hydraulic pliers can be automatically improved and upgraded aiming at the pliers heads, so that the automatic operation of the pliers heads can be realized, and the hydraulic pliers are suitable for minor repair operation.
The objective drawbacks of the prior art are as follows: because of the difference of torque variation of the drill rod and the oil pipe in the screw tightening process and the principles of the turnbuckle and the punching structure of the iron driller, the iron driller can only meet the requirement of the treatment of the on-line shackle on the drill rod, but the efficiency of the on-line shackle on the oil pipe is extremely low, and meanwhile, the iron driller has complex structure and huge volume, occupies a large space of a drill floor and cannot meet the field production requirement.
Disclosure of Invention
The invention aims to provide a hydraulic clamp which replaces an trial experiment of an iron roughneck technology in overhaul operation, can occupy less space of a drill floor, and simultaneously realizes efficient and automatic processing of oil pipe drill rod screwing-on and unscrewing.
Embodiments of the present invention are implemented as follows:
in one aspect of an embodiment of the present invention, there is provided a hydraulic clamp including: the outer cylinder is vertically fixed on the drill floor; and the bottom end of the hydraulic clamp body is provided with a cylinder inserting stand column, the hydraulic clamp body can rotate around the cylinder inserting stand column, and the cylinder inserting stand column is fixedly sleeved in the outer cylinder.
Optionally, the outer barrel is welded to the drill floor.
Optionally, the hydraulic tong body including connect in rotary device on a section of thick bamboo stand top, connect in rotary device top's revolving platform, connect in on the revolving platform top surface and along the slide rail of vertical extension and slidable mounting in telescopic arm assembly on the slide rail, telescopic arm assembly can follow the slide rail slides from top to bottom, telescopic arm assembly keeps away from the one end of slide rail has automatic gear shifting hydraulic tong assembly.
Optionally, the flexible arm assembly includes elevating pulley and flexible arm, elevating pulley slidable mounting in on the slide rail, and can follow the slide rail reciprocates, the one end of flexible arm connect in on the elevating pulley, the other end of flexible arm is connected automatic shift hydraulic tong assembly.
Optionally, the lifting device is located between the rotary table and the lifting pulley, the bottom end of the lifting device is connected with the rotary table, the top end of the lifting device is connected with the lifting pulley, and the lifting device is used for driving the lifting pulley to slide up and down along the sliding rail.
Optionally, the lifting device is a hydraulic cylinder.
Optionally, the automatic gear shifting hydraulic clamp assembly comprises a hydraulic clamp floating device and an automatic hydraulic clamp, wherein the hydraulic clamp floating device is connected to one end of the telescopic arm, which is far away from the sliding rail, and the automatic hydraulic clamp is installed on the hydraulic clamp floating device.
Optionally, the hydraulic tong floating device includes floating bottom plate and floating plate, the floating plate is arranged in on the floating bottom plate, just the floating plate with floating bottom plate is parallel arrangement, the floating plate with be equipped with the rolling element between the floating bottom plate, the floating plate can be relative through the rolling element floating bottom plate along with floating plate parallel direction is floated, wherein, floating bottom plate fixed connection in flexible arm keep away from the one end of slide rail, automatic hydraulic tong install in on the floating plate.
Optionally, the hydraulic tong floating device includes floating bottom plate, floating plate and deflection plate, the floating plate is arranged in on the floating bottom plate, just the floating plate with the floating bottom plate is parallel to be arranged, the floating plate with be equipped with the rolling element between the floating bottom plate, the floating plate can be relative the floating bottom plate is along with the floating plate parallel direction is floating through the rolling element, wherein, floating bottom plate fixed connection in the telescopic boom keep away from the one end of slide rail, the deflection plate is located on the floating plate, just deflection plate one end articulates in the floating plate, the other end of deflection plate with the floating plate passes through the deflection pneumatic cylinder and is connected, the deflection pneumatic cylinder is used for driving the deflection plate round deflection plate with the hinge of floating plate is relative the floating plate rotates an angle, automatic hydraulic tong is installed on the deflection plate.
Optionally, the floating bottom plate is connected with the floating plate through a connecting pin, the diameter of the connecting pin is smaller than the diameter of a pin hole formed in the floating plate and through which the connecting pin passes, and the rolling body is a steel ball roller.
As described above, the outer cylinder of the hydraulic clamp is fixedly connected to the drill floor in advance, and the socket upright post at the bottom end of the outer cylinder is fixedly sleeved in the outer cylinder, so that the hydraulic clamp can be quickly installed on the drill floor, and meanwhile, compared with the change of the shackle principle and the optimization design of the structure of an iron roughneck, the hydraulic clamp occupies less space of the drill floor.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of an embodiment of a hydraulic clamp according to the present invention;
FIG. 2 is a schematic view of the floating device of the hydraulic clamp of FIG. 1;
fig. 3 is a schematic top view of the hydraulic clamp of fig. 1 in use after being mounted on a drill floor.
Icon: 100-hydraulic pliers; 2-an outer cylinder; 1-a hydraulic clamp body; 11-inserting a cylinder upright post; 111-anti-rotation keys; 12-turning device; 13-a rotary table; 14-sliding rails; 15-a telescopic arm assembly; 151-lifting pulley; 152-telescoping arms; 1521—a telescopic hydraulic cylinder; 153-lifting device; 16-an automatic gear shifting hydraulic clamp assembly; 161-hydraulic clamp float device; 1611-a floating floor; 1612-a floating plate; 1613-rolling elements; 1614 a deflector plate; 1615-deflection hydraulic cylinders; 1616-connecting pins; 162-automatic hydraulic pliers; 1621-main clamp; 1622-backup wrench; 1623-spring guide bar; 3-wellhead working position; 4-mouse hole working position; 5-drill floor.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Examples
Referring to fig. 1 to 3, the present embodiment provides a hydraulic clamp 100, which includes a hydraulic clamp body 1 and an outer cylinder 2.
The outer barrel 2 is vertically fixed to the drill floor 5, in this embodiment the outer barrel 2 may be fixed to the drill floor 5 by welding, in other embodiments the outer barrel 2 may be fixed to the drill floor 5 by screws.
The bottom of the hydraulic clamp body 1 is provided with a cylinder-inserting upright post 11, the hydraulic clamp body 1 can rotate around the cylinder-inserting upright post 11, and the cylinder-inserting upright post 11 is fixedly sleeved in the outer cylinder 2. In this embodiment, the socket column 11 can be fixed with respect to the outer cylinder 2 by four rotation preventing keys 111, thereby completing the quick installation of the hydraulic clamp body 1. In other embodiments, the cartridge post 11 may also be fixed relative to the outer barrel 2, for example, by a dowel pin.
As described above, the hydraulic clamp 100 is fixedly coupled to the inside of the outer cylinder 2 by the socket column 11 at the bottom end thereof, so that the hydraulic clamp 100 can be mounted to the drill floor 5 relatively quickly, and the outer cylinder 2 is welded and fixed to the drill floor 5 in advance, and thus, the hydraulic clamp 100 occupies less space of the drill floor 5. Referring to fig. 3 again, after the hydraulic tongs 100 are installed on the drill floor 5, the hydraulic tongs can be switched between the wellhead working position 3 and the mousehole working position 4 in a back-and-forth rotation manner, so as to complete the tripping operation of the oil pipe at the wellhead working position 3 and the drill pipe at the mousehole working position 4.
In this embodiment, the hydraulic pliers body 1 includes a turning device 12 connected to the top end of the cylinder column 11, a turning table 13 connected to the top end of the turning device 12, a slide rail 14 connected to the top surface of the turning table 13 and extending vertically, a telescopic arm assembly 15 slidably mounted on the slide rail 14, the telescopic arm assembly 15 being capable of sliding up and down along the slide rail 14, and an automatic gear shifting hydraulic pliers assembly 16 being provided at one end of the telescopic arm assembly 15 away from the slide rail 14.
The telescopic arm assembly 15 comprises a lifting pulley 151 and a telescopic arm 152, the lifting pulley 151 is slidably mounted on the sliding rail 14 and can slide up and down along the sliding rail 14, one end of the telescopic arm 152 is connected to the lifting pulley 151, and the other end of the telescopic arm 152 is connected to the automatic gear shifting hydraulic clamp assembly 16.
In order to realize that the lifting pulley 151 can slide up and down along the sliding rail 14, a lifting device 153 is arranged between the rotary table 13 and the lifting pulley 151, the bottom end of the lifting device 153 is connected with the rotary table 13, the top end of the lifting device 153 is connected with the lifting pulley 151, and the lifting device 153 is used for driving the lifting pulley 151 to slide up and down along the sliding rail 14. In the present embodiment, the lifting device 153 may be a hydraulic cylinder, and of course, in other embodiments, the lifting device 153 may also be a pneumatic cylinder, a linear motor, or the like.
As described above, the turning device 12 drives the turning table 13 and the slide rail 14 mounted on the top surface of the turning table 13 to integrally rotate, so that the automatic shifting hydraulic clamp assembly 16 mounted on the telescopic arm 152 can be driven to rotate around the slide rail 14, and the lifting pulley 151 is driven to slide up and down along the slide rail 14 by the lifting device 153, so that the automatic shifting hydraulic clamp assembly 16 mounted on the telescopic arm 152 is driven to move up and down along the vertical direction. The telescopic arm 152 can be telescopic by its own telescopic hydraulic cylinder 1521, thereby driving the automatic shifting hydraulic clamp assembly 16 mounted on the telescopic arm 152 to move horizontally away from or towards the rail 14.
In this embodiment, the automatic shifting hydraulic clamp assembly 16 includes a hydraulic clamp floating device 161 and an automatic hydraulic clamp 162, the hydraulic clamp floating device 161 is connected to an end of the telescopic arm 152 away from the slide rail 14, and the automatic hydraulic clamp 162 is mounted on the hydraulic clamp floating device 161.
Hydraulic clamp float 161 includes a float plate 1611, a float plate 1612, and a deflection plate 1614.
The floating plate 1612 is disposed on the floating bottom plate 1611, the floating plate 1612 and the floating bottom plate 1611 are arranged in parallel, rolling bodies 1613, such as steel ball rollers, are disposed between the floating plate 1612 and the floating bottom plate 1611, the floating plate 1612 can float along the direction parallel to the floating plate 1612 relative to the floating bottom plate 1611 through the rolling bodies 1613, and the floating bottom plate 1611 is fixedly connected to one end of the telescopic arm 152 away from the slide rail 14.
Wherein, the floating bottom plate 1611 is connected with the floating plate 1612 through a connecting pin 1616, and the diameter of the connecting pin 1616 is smaller than the diameter of a pin hole formed on the floating plate 1612 for the connecting pin 1616 to pass through. Wherein the diameter difference between the connecting pin 1616 and the pin hole is determined by the required floating amount under the condition that the strength allows, the floating plate 1612 has a horizontal floating function with respect to the floating base plate 1611, so that the automatic hydraulic clamp 162 mounted on the floating plate 1612 has a horizontal floating function,
when the automatic hydraulic tongs 162 clamps a pipe column, since the automatic hydraulic tongs 162 has a horizontal floating function, radial displacement of the jaw center of the automatic hydraulic tongs 162 and the deviation of the pipe column center can be automatically compensated, and automatic adjustment alignment of the jaw center of the automatic hydraulic tongs 162 and the pipe column center can be realized within a certain range.
The deflection plate 1614 is disposed above the floating plate 1612, one end of the deflection plate 1614 is hinged to the floating plate 1612, the other end of the deflection plate 1614 is connected to the floating plate 1612 through a deflection hydraulic cylinder 1615, the deflection hydraulic cylinder 1615 is used for driving the deflection plate 1614 to rotate around the hinge of the deflection plate 1614 and the floating plate 1612 by an angle relative to the floating plate 1612, and the automatic hydraulic pliers 162 are mounted on the deflection plate 1614. Because the deflection plate 1614 rotates by an angle relative to the floating plate 1612, the automatic hydraulic pliers 162 mounted on the deflection plate 1614 can achieve a certain deflection angle relative to the horizontal direction, thereby meeting the requirement of tripping on a pipe column with a certain inclination angle in a mouse hole.
It should be appreciated that in other embodiments, such as when the automatic hydraulic clamp 162 does not require a certain degree of deflection relative to horizontal, the hydraulic clamp float device 161 may not include the deflector plate 1614, i.e., the automatic hydraulic clamp 162 may be mounted directly on the float plate 1612.
In addition, a hanging plate is fastened at the top of the sliding rail 14 and is connected with the hanging plate through a hanging tool for hanging, and the hanging plate can effectively solve the problem that the hanging is difficult to install due to the fact that the hanging rear insertion cylinder upright post 11 is not perpendicular to the drill floor 5 due to the fact that the gravity center is located in front.
The automatic hydraulic clamp 162 fixed on the deflection plate 1614 can further comprise a main clamp 1621 and a backup clamp 1622, wherein the backup clamp 1622 is connected with the deflection plate 1614 through a spring guide rod 1623, the main clamp 1621 is supported by three spring guide rods 1623 and is connected with the backup clamp 1622, and the main clamp 1621 is provided with a number of turns counting and pressure detecting sensor to realize the functions of torque detection, number of turns detection, automatic jaw resetting and the like. Two sets of hydraulic automatic gear shifting mechanisms are arranged on the main clamp 1621, so that automatic gear switching is realized, and the requirement of different pipe column buckling torque is met.
The following is a working method of the hydraulic pliers 100:
1) After being installed in place, the power pipeline and the communication cable are connected, and after relevant parameters are set by starting, panel operation or remote controller operation is selected.
2) And operating a remote controller/panel switch, rotating and positioning the selection equipment from the avoidance position to the wellhead working position 3, collecting a feedback signal by an encoder to the controller, and automatically positioning by a preset program.
3) When the pipe column joint is fixed in the working height range, the rocker is stirred to stretch out, the telescopic hydraulic cylinder 1521 drives the telescopic arm assembly 15 to move to the center of the wellhead, the linear displacement sensor on the telescopic hydraulic cylinder 1521 detects the stretch-out distance, and the preset program realizes the fast stretch-out and slow-in-place movement rhythm.
4) After the jaw is consistent with the joint in height through stirring the rocker lifting/lowering function, stirring the rocker screwing-on/screwing-off function, clamping the backup wrench 1622, starting screwing-on/screwing-off the main wrench 1621 in forward rotation/reverse rotation, and realizing the slow, fast and slow rotation rhythm of the main wrench 1621 by a preset program, and meeting the requirement of screwing-on/screwing-off the pipe column through detection of the number of turns and torque.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A hydraulic clamp, comprising:
the outer cylinder is vertically fixed on the drill floor; and
the hydraulic pliers body is provided with a cylinder inserting upright post at the bottom end, and can rotate around the cylinder inserting upright post, and the cylinder inserting upright post is fixedly sleeved in the outer cylinder;
the hydraulic clamp body comprises an automatic gear shifting hydraulic clamp assembly, the automatic gear shifting hydraulic clamp assembly comprises a hydraulic clamp floating device and an automatic hydraulic clamp, the hydraulic clamp floating device comprises a floating bottom plate, a floating plate and a deflection plate, the floating plate is arranged on the floating bottom plate and is arranged in parallel with the floating bottom plate, rolling bodies are arranged between the floating plate and the floating bottom plate, and the floating plate can float along the direction parallel to the floating plate relative to the floating bottom plate through the rolling bodies; one end of the deflection plate is hinged to the floating plate, the other end of the deflection plate is connected with the floating plate through a deflection hydraulic cylinder, the deflection hydraulic cylinder is used for driving the deflection plate to rotate around the hinge position of the deflection plate and the floating plate by an angle relative to the floating plate, and the automatic hydraulic pliers are installed on the deflection plate.
2. The hydraulic clamp of claim 1, wherein the outer barrel is welded to the drill floor.
3. The hydraulic clamp according to claim 1, wherein the hydraulic clamp body comprises a turning device connected to the top end of the cylinder inserting upright post, a turning table connected to the top end of the turning device, and a sliding rail connected to the top surface of the turning table, the bottom end of the sliding rail is fixedly connected to the top surface of the turning table, the top end of the sliding rail extends towards the direction away from the top surface of the turning table, the sliding rail and the top surface of the turning table are vertically arranged, the hydraulic clamp body further comprises a telescopic arm assembly, one end of the telescopic arm assembly is slidably mounted on the sliding rail, the telescopic arm assembly can slide up and down along the sliding rail, and one end of the telescopic arm assembly away from the sliding rail is provided with the automatic gear shifting hydraulic clamp assembly.
4. The hydraulic clamp of claim 3, wherein the telescopic arm assembly comprises a lifting pulley and a telescopic arm, the lifting pulley is slidably mounted on the sliding rail and can slide up and down along the sliding rail, one end of the telescopic arm is connected to the lifting pulley, and the other end of the telescopic arm is connected to the automatic gear shifting hydraulic clamp assembly.
5. The hydraulic clamp of claim 4, further comprising a lifting device positioned between the turntable and the lifting block, wherein a bottom end of the lifting device is connected to the turntable, a top end of the lifting device is connected to the lifting block, and the lifting device is used for driving the lifting block to slide up and down along the sliding rail.
6. The hydraulic clamp of claim 5, wherein the lifting device is a hydraulic cylinder.
7. The hydraulic clamp of claim 4, wherein the floating plate is fixedly connected to an end of the telescoping arm remote from the slide rail, and the automatic hydraulic clamp is mounted on the floating plate.
8. The hydraulic clamp according to claim 1, wherein the floating bottom plate is connected with the floating plate through a connecting pin, the diameter of the connecting pin is smaller than the diameter of a pin hole formed in the floating plate and through which the connecting pin passes, and the rolling bodies are steel ball rollers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910195324.8A CN109779542B (en) | 2019-03-14 | 2019-03-14 | Hydraulic pliers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910195324.8A CN109779542B (en) | 2019-03-14 | 2019-03-14 | Hydraulic pliers |
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| CN109779542A CN109779542A (en) | 2019-05-21 |
| CN109779542B true CN109779542B (en) | 2024-04-02 |
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| CN201910195324.8A Active CN109779542B (en) | 2019-03-14 | 2019-03-14 | Hydraulic pliers |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112049597A (en) * | 2019-06-06 | 2020-12-08 | 胜利油田胜利自动化开发有限责任公司 | Integrated wellhead blowout control and well sealing device |
| CN112761554B (en) * | 2019-11-01 | 2024-06-25 | 中国石油天然气股份有限公司 | Oil pipe lifting and discharging device and system |
| CN110685619B (en) * | 2019-11-04 | 2024-05-17 | 胜利油田胜机石油装备有限公司 | Automatic hydraulic pliers with punching and buckling functions |
| CN110656899A (en) * | 2019-11-04 | 2020-01-07 | 胜利油田胜机石油装备有限公司 | Automatic aligning and resetting device and hydraulic clamp body |
| CN111648727B (en) * | 2020-06-15 | 2022-01-28 | 德州学院 | Automatic well repairing equipment and automatic well repairing method thereof |
| CN112610171B (en) * | 2020-12-24 | 2022-06-21 | 四川宏华石油设备有限公司 | Iron roughneck clamp assembly |
| CA3218302A1 (en) * | 2020-12-28 | 2022-07-07 | Xiqing ZHANG | Automated apparatus for oil field drilling and workover operations |
| CN113530475B (en) * | 2021-07-16 | 2024-02-23 | 无锡智瀚智能机器技术有限公司 | Positioning mechanism, positioning seat, alignment mechanism for workover rig and workover rig |
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