CN104632183A - Automatic alignment controller of hydraulic power tongs - Google Patents
Automatic alignment controller of hydraulic power tongs Download PDFInfo
- Publication number
- CN104632183A CN104632183A CN201310551988.6A CN201310551988A CN104632183A CN 104632183 A CN104632183 A CN 104632183A CN 201310551988 A CN201310551988 A CN 201310551988A CN 104632183 A CN104632183 A CN 104632183A
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- pin
- hydraulic power
- power tongs
- oil
- positioning seat
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- 125000006850 spacer group Chemical group 0.000 claims description 12
- 150000001875 compounds Chemical class 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 3
- 238000007373 indentation Methods 0.000 claims description 3
- 239000003208 petroleum Substances 0.000 abstract description 4
- 210000000080 chela (arthropods) Anatomy 0.000 description 18
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000005553 drilling Methods 0.000 description 4
- 230000002441 reversible effect Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/16—Connecting or disconnecting pipe couplings or joints
- E21B19/165—Control or monitoring arrangements therefor
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Braking Arrangements (AREA)
- Actuator (AREA)
Abstract
An automatic alignment controller of a hydraulic power tong belongs to the technical field of ground tool equipment of petroleum engineering. The hydraulic control valve assembly mainly comprises a valve box body, positioning seats, a starting pin elastic piece, a piston elastic piece and an adjustable bolt, wherein a front through long and round starting pin cavity is arranged in the center of the rear part of the cuboid valve box body, and 2 positioning seat internal threads and oil inlets or oil outlets are respectively arranged on the left side and the right side of the starting pin cavity; the bottom of the valve box body is provided with a bracket internal thread; the left end and the right end of a starting pin cavity in the valve box body are respectively provided with a transverse circular piston cavity and a piston cavity internal thread, so that the automatic alignment controller for the clamp heads of the main clamp and the back clamp of the hydraulic power clamp to be quickly aligned with the opening can be realized, and manual operation is replaced.
Description
Technical field
The present invention relates to a kind of automatic aligning controller of hydraulic power tongs, belong to the ground instrument equipment technical field of petroleum works.
Background technology
Hydraulic power tongs be in petroleum system drilling well, underground work on unload the special tool of drilling rod, sucker rod, oil pipe, be the important tool improved operating worker condition of labor, ensure construction operation quality, realize operating machine of well head.Hydraulic power tongs mainly contains main clamper body (mainly comprising binding clip, hydraulic motor, reducer, reversal valve, binding clip clamp system), actuating element (is made up of two cover drag link mechanisms, handle main pincers to reset and thread screw, and handle two grades of gear levers of main pincers), suspended portion (employing is hung core structure and hung up by pincers), back-up tong (clamp the tubing string at below the tight position of main clamp, to overcome reaction torque during thread screw), power set (for Power Tong provides power source, comprising oil pump, overflow valve, pipeline, joint etc.) composition.Hydraulic power tongs undertakies controlling and transmitting power by hydraulic system, through two grades of deceleration outputting two rotating speeds and moment of torsion, then by clamp system, pincers tooth clamped and rotate tubing string, realizing oil discharge pipe's screw thread under the cooperation of back-up tong.Concrete upper screwing operation: under the state of main pincers and back-up tong binding clip aligned openings, respectively reset knob is removed and upwards buckle direction, and push Power Tong to tubing string, handle the main pincers of hand-operated direction valve change hydraulic motor pressure oil flow direction promotion to rotate along upper direction of buckleing, carry out upper button complete, reversible control hand-operated direction valve makes main pincers reverse, and main pincers, back-up tong binding clip be aligned openings respectively, then Power Tong is withdrawn tubing string, namely complete and once go up screwing operation.Specifically unload screwing operation: under the state of main pincers and back-up tong binding clip aligned openings, respectively reset knob is removed to shackle direction, and push Power Tong to tubing string, handle the main pincers of hand-operated direction valve change hydraulic motor pressure oil flow direction promotion to rotate along shackle direction, carry out shackle complete, reversible control hand-operated direction valve makes main pincers reverse, and main pincers, back-up tong binding clip be aligned openings respectively, then Power Tong is withdrawn tubing string, namely complete and once unload screwing operation.The total problem of two kinds of operations is: the alignment of main pincers, back-up tong binding clip is necessary link, rotary distance, artificial visually examine, calculating, judgement, manual control are all needed to positive-angle, defective vision, illumination is not enough, calculate that to judge that difference all can make manually advanced or delayed, cause aliging unsuccessfully and again can only repeat alignment operation, affect speed of application, strengthen staff labor intensity.New problem at present also has: the unattended system of North China Oilfield company science and technology project verification development underground work lower oil tube well head of PetroChina Company Ltd. subordinate, can long-range hydraulic control Power Tong thread screw be the important component part in this operating system, and whether can realize main pincers by certain device and just become finally complete one of operatorless key technology of well head with the automatic aligning of back-up tong.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of automatic aligning controller of hydraulic power tongs, the automatic aligning controller of the main pincers of hydraulic power tongs, back-up tong binding clip quick alignment opening can be realized, replace manual operation, reduce staff labor intensity, improve speed of application, and provide technical support for Long-distance Control hydraulic power tongs and the final unattended new technology of underground work lower oil tube well head that formed.
A kind of automatic aligning controller of hydraulic power tongs, primarily of pilot operated valve device assembly and contraposition arresting disc, pilot operated valve device support, brake disc heightening frame composition, it is characterized in that: the contraposition arresting disc of arc is by the parallel top of increasing the brake disc being arranged on hydraulic power tongs of brake disc heightening frame, and rectangular pilot operated valve device assembly passes through pilot operated valve device support installing between hydraulic power tongs hung suspending barrel and contraposition arresting disc.
Pilot operated valve device assembly is primarily of the composition such as valve housing, positioning seat, startup pin, startup pin elastic component, piston, piston elastic part, adjustable bolt.
Wherein the valve housing posterior center of cuboid has startup pin chamber through, oval forward, respectively has individual positioning seat internal thread and oil-in or oil-out about starting pin chamber; Support internal thread is had bottom valve housing; Valve housing inside starts pin two ends, left and right, chamber respectively plunger shaft that is horizontal, circle and plunger shaft internal thread, also have longitudinal oil duct about starting pin chamber, have horizontal oil duct up and down, one jiao of UNICOM's oil-in diagonal angle UNICOM oil-out of longitudinal oil duct and horizontal oil way cross.
There is the screwed hole corresponding with positioning seat internal thread rectangular positioning seat corner, and middle part has by starting the cylindrical through hole of pin afterbody, and have circular tube shaped boss outside through hole, boss has the concave-shaped openings can putting spacer pin up and down.
Starting pin main body is that reducing is cylindrical, and anterior top is half of is the half of inclined-plane right-angle head recessed for right angle of smooth ramp, postmedian right angle undergauge, afterbody have vertical through hole to put spacer pin.
Columniform top land is arc, each mounting O-shaped seal in two ends, has oily groove between twice O type seal.
Positioning seat is arranged on valve housing rear portion by positioning seat screw; Start pin afterbody and be inserted in startup pin elastic component, afterbody is from front to back successively through starting pin chamber, positioning seat, location is realized by spacer pin, spacer pin can slide in the concave-shaped openings of positioning seat, the inclined-plane right-angle head starting pin top positioning seat and start pin elastic component control under in the outer limited indentation of valve housing or expose; Top land enters plunger shaft from outside to inside, loads piston elastic part subsequently, installs adjustable bolt in plunger shaft internal thread, the anterior cylinder of top land contact start pin, piston under adjustable bolt and piston elastic part control in plunger shaft limited advance and retreat.
Contraposition arresting disc is expanding on the basis of hydraulic power tongs former arcuate brake dish size, except there is bolt hole corresponding to arcuate brake dish former in hydraulic power tongs, compound knob hole, also have beyond compound knob hole can hold start pin top bevel right-angle head, the stop notch of rectangle.
The chassis of brake disc heightening frame is with to take over a business shape identical, and have bolt hole, compound knob hole that arcuate brake dish former in hydraulic power tongs is corresponding, clamp down on Moving plate by bolt bottom connecting fluid pressure power, top connects contraposition arresting disc.
Pilot operated valve device frame upper has and the corresponding screw of support internal thread bottom valve housing, by the connection bottom bolt realization and valve housing.
The feed line of pilot operated valve device assembly, flow line are connected to crossing on oil-piping between the reversal valve of hydraulic power tongs and hydraulic motor.
The duty of upper oil discharge pipe screw thread is adjusted by the commutation starting pin top bevel right-angle head.
The operating principle of the automatic aligning controller of summary hydraulic power tongs contributes to understanding the present invention.
Under normal condition, the oil circuit of piston closes from oil-in to oil-out of pilot operated valve device assembly, makes hydraulic power tongs still by the trend of reversal valve controlled pressure oil to hydraulic motor.Start pin overhanging under the effect of piston elastic part, the outer rim of contraposition arresting disc forward rotates along the inclined-plane right-angle head starting pin, start pin be squeezed startup pin chamber in shrink, even if enter stop notch under the effect of piston elastic part, chamfering inclined-plane also can make it pass through smoothly.During counter-rotating, the inclined-plane right-angle head starting pin enters stop notch, right-angle head produce stop and under the promotion of stop notch transverse shifting, start the anterior cylinder extrusion piston top of pin, piston bounces back in plunger shaft, cross oily groove when moving to longitudinal oil duct position, oil circuit from oil-in to oil-out is got through, pressure oil short circuit is return, hydraulic motor quits work because can not get fuel feeding, and now starts pin, stop notch, main pincers and back-up tong binding clip opening and be just in time aligned on a center line.
Beneficial effect of the present invention: provide when a kind of petroleum system drilling well, underground work onsite application hydraulic power tongs unload drilling rod, sucker rod, oil pipe, the automatic aligning controller of the main pincers of hydraulic power tongs, back-up tong binding clip quick alignment opening can be realized, replace manual operation, reduce staff labor intensity, improve speed of application, and provide technical support for Long-distance Control hydraulic power tongs and the final unattended new technology of underground work lower oil tube well head that formed.Make simple, be beneficial to popularization.
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, by referring to detailed description below, more completely can understand the present invention better and easily learn wherein many adjoint advantages, but accompanying drawing described herein is used to provide a further understanding of the present invention, form a part of the present invention, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention, as schemed wherein:
Fig. 1 is the top view that the automatic aligning controller of hydraulic power tongs of the present invention is formed;
Fig. 2 is pilot operated valve device assembly structure top cross-sectional view in the present invention;
Fig. 3 is that in the present invention, pilot operated valve device assembly structure faces generalized section;
Fig. 4 is contraposition arresting disc structure schematic top plan view in the present invention;
Fig. 5 is pilot operated valve device supporting structure schematic top plan view in the present invention;
Fig. 6 is brake disc height increasing frame structure front elevational schematic in the present invention;
Fig. 7 is that in the present invention, generalized section is looked on a brake disc height increasing frame structure left side.
In figure, 1. pilot operated valve device assembly, 2. valve housing, 3. plunger shaft, 4. oil-in, 5. positioning seat internal thread, 6. positioning seat screw, 7. start pin chamber, 8. positioning seat, 9. start pin, 10 spacer pins, 11. start pin elastic components, 12. oil-outs, 13. pistons, 14. oily groove, 15.O type seal, 17. plunger shaft internal threads, 18. adjustable bolts, 19. support internal threads, 20. longitudinal oil ducts, 21. horizontal oil ducts, 22. contraposition arresting discs, 23. bolts hole, 24. reset knob holes, 25 stop notch, 26. pilot operated valve device supports, 27. brake disc heightening frames.
Below in conjunction with drawings and Examples, the present invention is further described.
Detailed description of the invention
Obviously, the many modifications and variations that those skilled in the art do based on aim of the present invention belong to protection scope of the present invention.
Embodiment 1: as shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7,
Form primarily of pilot operated valve device assembly 1 and contraposition arresting disc 22, pilot operated valve device support 26, brake disc heightening frame 27, it is characterized in that: the contraposition arresting disc 22 of arc is by the parallel top of increasing the brake disc being arranged on hydraulic power tongs of brake disc heightening frame 27, and rectangular pilot operated valve device assembly 1 is arranged between hydraulic power tongs hung suspending barrel and contraposition arresting disc 22 by pilot operated valve device support 26.
Pilot operated valve device assembly 1 is primarily of the composition such as valve housing 2, positioning seat 8, startup pin 9, startup pin elastic component 11, piston 13, piston elastic part 16, adjustable bolt 18.
Wherein valve housing 2 posterior center of cuboid has startup pin chamber 7 through, oval forward, and starting pin chamber about 7 respectively has 2 positioning seat internal threads 5 and oil-in 4 or oil-out 12; Support internal thread 19 is had bottom valve housing 2; Valve housing 2 inside starts pin two ends, chamber about 7 respectively plunger shaft 3 that is horizontal, circle and plunger shaft internal thread 17, start pin chamber about 7 to also have longitudinal oil duct 20, have horizontal oil duct 21 up and down, one jiao of UNICOM's oil-in 4 diagonal angle UNICOM oil-out 12 that longitudinal oil duct 20 and horizontal oil duct 21 intersect.
Rectangular positioning seat 8 four jiaos has the screwed hole corresponding with positioning seat internal thread 5, and middle part has by starting the cylindrical through hole of pin 9 afterbody, and have circular tube shaped boss outside through hole, boss has the concave-shaped openings can putting spacer pin 10 up and down.
Starting pin 9 main body is that reducing is cylindrical, and anterior top is half of is the half of inclined-plane right-angle head recessed for right angle of smooth ramp, postmedian right angle undergauge, afterbody have vertical through hole can put spacer pin 10.
Columniform piston 13 top is arc, had oily groove 14 between each mounting O-shaped seal 15, the twice O type seal 15 of two ends.
Positioning seat 8 is arranged on valve housing 2 rear portion by positioning seat screw 6; Start pin 9 afterbody and be inserted in startup pin elastic component 11, afterbody is from front to back successively through starting pin chamber 7, positioning seat 8, location is realized by spacer pin 10, spacer pin 10 can slide in the concave-shaped openings of positioning seat 8, the inclined-plane right-angle head starting pin 9 top positioning seat 8 and start pin elastic component 11 control under in the outer limited indentation of valve housing 2 or expose; Piston 13 top enters plunger shaft 3 from outside to inside, load piston elastic part 16 subsequently, install adjustable bolt 18 in plunger shaft internal thread 17, piston 13 top contact starts the anterior cylinder of pin 9, piston 13 under adjustable bolt 18 and piston elastic part 16 control in plunger shaft 3 limited advance and retreat.
Contraposition arresting disc 22 is expanding on the basis of hydraulic power tongs former arcuate brake dish size, except there is bolt hole 23 corresponding to arcuate brake dish former in hydraulic power tongs, compound knob hole 24, also have beyond the compound knob hole 24 can hold start pin 9 top bevel right-angle head, the stop notch 25 of rectangle.
The chassis of brake disc heightening frame 27 is with to take over a business shape identical, and have bolt hole 23, compound knob hole 24 that arcuate brake dish former in hydraulic power tongs is corresponding, clamp down on Moving plate by bolt bottom connecting fluid pressure power, top connects contraposition arresting disc 22.
Pilot operated valve device support 26 top has and the corresponding screw of support internal thread 19 bottom valve housing 2, by the connection bottom bolt realization and valve housing 2.
The feed line of pilot operated valve device assembly 1, flow line are connected on the oil-piping excessively between the reversal valve of hydraulic power tongs and hydraulic motor, under normal condition, the piston 13 of pilot operated valve device assembly 1 is closed from oil-in 4 to the oil circuit of oil-out 12, makes hydraulic power tongs still by the trend of reversal valve controlled pressure oil to hydraulic motor.Start pin 9 overhanging under the effect of piston elastic part 16, the outer rim of contraposition arresting disc 22 forward rotates along the inclined-plane right-angle head starting pin 9, start pin 9 be squeezed startup pin chamber 7 in contraction, even if enter stop notch 25 under the effect of piston elastic part 16, chamfering inclined-plane also can make it pass through smoothly.During counter-rotating, the inclined-plane right-angle head starting pin 9 enters stop notch 25, right-angle head produce stop and under the promotion of stop notch 25 transverse shifting, start pin 9 anterior cylinder extrusion piston 13 top, piston 13 bounces back in plunger shaft 3, cross oily groove 14 when moving to longitudinal oil duct 20 position, oil circuit from oil-in 4 to oil-out 12 is got through, pressure oil short circuit is return, hydraulic motor quits work because can not get fuel feeding, and now starts pin 9, stop notch 25, main pincers and back-up tong binding clip opening and be just in time aligned on a center line.
As mentioned above, embodiments of the invention are explained, but as long as do not depart from inventive point of the present invention in fact and effect can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, such variation is also all included within protection scope of the present invention.
Claims (5)
1. the automatic aligning controller of hydraulic power tongs; primarily of pilot operated valve device assembly and contraposition arresting disc, pilot operated valve device support, brake disc heightening frame composition; it is characterized in that: the contraposition arresting disc of arc is by the parallel top of increasing the brake disc being arranged on hydraulic power tongs of brake disc heightening frame, and rectangular pilot operated valve device assembly passes through pilot operated valve device support installing between hydraulic power tongs hung suspending barrel and contraposition arresting disc; Pilot operated valve device assembly is primarily of valve housing, positioning seat, startup pin, startup pin elastic component, piston, piston elastic part, adjustable bolt composition; The valve housing posterior center of cuboid has startup pin chamber through, oval forward, respectively has 2 positioning seat internal threads and oil-in or oil-out about starting pin chamber; Support internal thread is had bottom valve housing; Valve housing inside starts pin two ends, left and right, chamber respectively plunger shaft that is horizontal, circle and plunger shaft internal thread, also has longitudinal oil duct, has horizontal oil duct up and down, one jiao of UNICOM's oil-in diagonal angle UNICOM oil-out of longitudinal oil duct and horizontal oil way cross about starting pin chamber; There is the screwed hole corresponding with positioning seat internal thread rectangular positioning seat corner, and middle part has by starting the cylindrical through hole of pin afterbody, and have circular tube shaped boss outside through hole, boss has the concave-shaped openings can putting spacer pin up and down;
Columniform top land is arc, each mounting O-shaped seal in two ends, has oily groove between twice O type seal;
Positioning seat is arranged on valve housing rear portion by positioning seat screw; Start pin afterbody and be inserted in startup pin elastic component, afterbody is from front to back successively through starting pin chamber, positioning seat, location is realized by spacer pin, spacer pin can slide in the concave-shaped openings of positioning seat, the inclined-plane right-angle head starting pin top positioning seat and start pin elastic component control under in the outer limited indentation of valve housing or expose; Top land enters plunger shaft from outside to inside, loads piston elastic part subsequently, installs adjustable bolt in plunger shaft internal thread, the anterior cylinder of top land contact start pin, piston under adjustable bolt and piston elastic part control in plunger shaft limited advance and retreat.
2. the automatic aligning controller of hydraulic power tongs according to claim 1, it is characterized in that: contraposition arresting disc is expanding on the basis of hydraulic power tongs former arcuate brake dish size, except there is bolt hole corresponding to arcuate brake dish former in hydraulic power tongs, compound knob hole, also have beyond compound knob hole can hold start pin top bevel right-angle head, the stop notch of rectangle.
3. the automatic aligning controller of hydraulic power tongs according to claim 1, it is characterized in that: the chassis of brake disc heightening frame is with to take over a business shape identical, there are bolt hole, compound knob hole that arcuate brake dish former in hydraulic power tongs is corresponding, clamp down on Moving plate by bolt bottom connecting fluid pressure power, top connects contraposition arresting disc.
4. the automatic aligning controller of hydraulic power tongs according to claim 1, is characterized in that: pilot operated valve device frame upper has and the corresponding screw of support internal thread bottom valve housing, by the connection bottom bolt realization and valve housing.
5. the automatic aligning controller of hydraulic power tongs according to claim 1, is characterized in that: the feed line of pilot operated valve device assembly, flow line are connected to crossing on oil-piping between the reversal valve of hydraulic power tongs and hydraulic motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310551988.6A CN104632183B (en) | 2013-11-08 | 2013-11-08 | Automatic alignment controller of hydraulic power tongs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310551988.6A CN104632183B (en) | 2013-11-08 | 2013-11-08 | Automatic alignment controller of hydraulic power tongs |
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| Publication Number | Publication Date |
|---|---|
| CN104632183A true CN104632183A (en) | 2015-05-20 |
| CN104632183B CN104632183B (en) | 2017-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310551988.6A Active CN104632183B (en) | 2013-11-08 | 2013-11-08 | Automatic alignment controller of hydraulic power tongs |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422023A (en) * | 2015-12-08 | 2016-03-23 | 盐城特达钻采设备有限公司 | Opening type hydraulic power tongs capable of being remotely and hydraulically controlled |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2352667A (en) * | 1999-07-29 | 2001-02-07 | Weatherford Lamb | Hydraulic Power Tongs |
| CN201273157Y (en) * | 2008-09-27 | 2009-07-15 | 刘承建 | Slewing displacement apparatus of power pliers |
| CN201763280U (en) * | 2010-08-23 | 2011-03-16 | 四川宏华石油设备有限公司 | Power tongs |
| CN201902182U (en) * | 2010-12-25 | 2011-07-20 | 海城市石油机械制造有限公司 | Notch aligning device for hydraulic power tongs |
| CN102278083A (en) * | 2011-07-06 | 2011-12-14 | 抚州市临川白勇海洋工程有限公司 | Intelligent casing tongs with back-up tongs |
| CN202228015U (en) * | 2011-08-11 | 2012-05-23 | 齐齐哈尔振华石油机械有限责任公司 | A hydraulic drive remote control track motion type hydraulic oil pipe wrench |
| CN202731790U (en) * | 2012-07-31 | 2013-02-13 | 盐城特达钻采设备有限公司 | Automatic opposite opening device of opening power tongs for oil field pipe |
| CN203626800U (en) * | 2013-11-08 | 2014-06-04 | 中国石油天然气股份有限公司 | Automatic alignment controller of hydraulic power tongs |
-
2013
- 2013-11-08 CN CN201310551988.6A patent/CN104632183B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2352667A (en) * | 1999-07-29 | 2001-02-07 | Weatherford Lamb | Hydraulic Power Tongs |
| CN201273157Y (en) * | 2008-09-27 | 2009-07-15 | 刘承建 | Slewing displacement apparatus of power pliers |
| CN201763280U (en) * | 2010-08-23 | 2011-03-16 | 四川宏华石油设备有限公司 | Power tongs |
| CN201902182U (en) * | 2010-12-25 | 2011-07-20 | 海城市石油机械制造有限公司 | Notch aligning device for hydraulic power tongs |
| CN102278083A (en) * | 2011-07-06 | 2011-12-14 | 抚州市临川白勇海洋工程有限公司 | Intelligent casing tongs with back-up tongs |
| CN202228015U (en) * | 2011-08-11 | 2012-05-23 | 齐齐哈尔振华石油机械有限责任公司 | A hydraulic drive remote control track motion type hydraulic oil pipe wrench |
| CN202731790U (en) * | 2012-07-31 | 2013-02-13 | 盐城特达钻采设备有限公司 | Automatic opposite opening device of opening power tongs for oil field pipe |
| CN203626800U (en) * | 2013-11-08 | 2014-06-04 | 中国石油天然气股份有限公司 | Automatic alignment controller of hydraulic power tongs |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422023A (en) * | 2015-12-08 | 2016-03-23 | 盐城特达钻采设备有限公司 | Opening type hydraulic power tongs capable of being remotely and hydraulically controlled |
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| Publication number | Publication date |
|---|---|
| CN104632183B (en) | 2017-08-04 |
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