CN201407003Y - Rear guide rod connecting mechanism for main tongs and back-up tongs of power tongs - Google Patents
Rear guide rod connecting mechanism for main tongs and back-up tongs of power tongs Download PDFInfo
- Publication number
- CN201407003Y CN201407003Y CN2009201466130U CN200920146613U CN201407003Y CN 201407003 Y CN201407003 Y CN 201407003Y CN 2009201466130 U CN2009201466130 U CN 2009201466130U CN 200920146613 U CN200920146613 U CN 200920146613U CN 201407003 Y CN201407003 Y CN 201407003Y
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- China
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- tongs
- main
- tailstock
- tong
- pincers
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- Expired - Fee Related
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Abstract
The utility model relates to a rear guide rod connecting mechanism for main tongs and back-up tongs of power tongs, which comprises a main tongs tailstock and a rear guide rod component. The main tongs tailstock is fixed at the tail part of a casing of the main tongs, the rear guide rod component is in universal hinge with the main tongs tailstock and in rigid connection with the tail part of theback-up tongs, and the bearing reaction points of the working main tongs are located at the center of the universal hinge. The utilization of the utility model remarkably increases the practical torsional moment on pipe columns from the power tongs combined by the main tongs and the back-up tongs, improves the pipe column damage and thread buckling abrasion, and remarkably improves the accuracy ofpractical torsional moment detection of the power tongs since the center of the universal hinge serves as the acquisition point for torsional moment test; moreover, the economic benefit is remarkable.
Description
Technical field
The utility model relates to the Power Tong that unloads the tubing string screw thread, particularly a kind of Power Tong master pincers, back-up tong back-guiding rod bindiny mechanism.
Background technology
Existing Power Tong master pincers, back-up tong are by preceding guide rod assembly and the back-guiding rod assembly formation combination plier that is connected in one.Main pincers spinner reaction torque is born by back-up tong by back-guiding rod, back-guiding rod assembly and being fixed between the main pincers tailstock of main pincers housing afterbody to being rigidly connected, for flexibly connecting, the support reaction application point is in back-guiding rod assembly and back-up tong afterbody junction between back-guiding rod assembly and the back-up tong afterbody.For this reason, main pincers output torque is except that acting on stuck pipe body spinner, also have the vertical plane moment that acts on the back-up tong afterbody by the back-guiding rod assembly, the master clamps, big more this vertical plane moment of back-up tong spacing is big more, and the spinner moment of torsion that main pincers act on the stuck pipe body reduces just many more.By Principles of Statics, in the space force system of the connection of thread of stuck pipe body, the power of turning back of body revolving force, body lateral pressure, body vertical plane is arranged, and the existence of this power of turning back will strengthen the wearing and tearing of tubing string screw thread, and deepens the local damage of pincers tooth to body.The generation of this power of turning back is the result that the support reaction application point is selected in the back-up tong afterbody.In addition, this support reaction application point is as main pincers torque signal collection point the time, and the torque ratio master that surveys clamps output torque and wants little many, and just the actual spinner moment of torsion of tubing string is less than main pincers output torque.
The purpose of this utility model will overcome the deficiencies in the prior art part exactly, release a kind of brand-new Power Tong master pincers, back-up tong back-guiding rod bindiny mechanism, the support reaction application point is selected in main pincers tailstock end, make the output torque of main pincers all act on the tubing string spinner, and alleviate the wearing and tearing of body screw thread in spinner, alleviate the local damage of pincers tooth body.As main pincers torque signal collection point, the moment of torsion of surveying be the output torque of main pincers also be the actual spinner moment of torsion of tubing string, with mainly clamp, the variation of back-up tong spacing has nothing to do.
Summary of the invention
A kind of Power Tong master pincers, back-up tong back-guiding rod bindiny mechanism contain main pincers tailstock, connector, centre pilot, end cap, spring, urceolus.Main pincers tailstock is fixed on main pincers housing afterbody, connector is fixed on the centre pilot upper end, be flexible connection between main pincers tailstock and the connector, become main pincers support reaction application point, have spring to support between centre pilot and the urceolus and form expansion link, for being rigidly connected, main pincers tailstock end is a spheroid between urceolus and the back-up tong afterbody, the connector side is provided with torque sensor, and the lateral pressure signal of main pincers tailstock end spheroid is as the torque signal collection point in the work.
Enforcement of the present utility model will significantly improve the actual torque that makes existing assembly power pincers act on the stuck pipe body on original basis.And damage makes moderate progress to tubing string for tubing string thread abrasion and pincers tooth, and it is accurate that moment of torsion detects data.
Description of drawings
Fig. 1 is main pincers for the utility model is used to suspend in midair, and back-up tong is suspended in the back-guiding rod assembly connection diagram under the main pincers;
Fig. 2 is used to suspend in midair back-up tong for the utility model, and main pincers are suspended in the back-guiding rod assembly connection diagram on the back-up tong;
Fig. 3 is the schematic top plan view of Fig. 1 Fig. 2
The specific embodiment
As shown in Figure 1, a kind of Power Tong master pincers, back-up tong back-guiding rod bindiny mechanism contain main pincers tailstock 1, connector 3, centre pilot 4, end cap 5, spring 6, urceolus 7.Main pincers tailstock 1 is fixed on main pincers housing afterbody, connector 3 is fixed on centre pilot 4 upper ends, be flexible connection between main pincers tailstock 1 and the connector 3, become main pincers support reaction application point, there is spring 6 to support between centre pilot 4 and the urceolus 7 and forms expansion link, for being rigidly connected, main pincers tailstock 1 end is a spheroid 2 between urceolus 7 and the back-up tong afterbody 8, and spheroid 2 constitutes universal being hinged with connector 3.
As shown in Figure 2, a kind of Power Tong master pincers, back-up tong back-guiding rod bindiny mechanism contain main pincers tailstock 1, connector 3, centre pilot 9, spring 11, urceolus 10.Main pincers tailstock 1 is fixed on main pincers housing afterbody, connector 3 is fixed on centre pilot 9 upper ends, be flexible connection between main pincers tailstock 1 and the connector 3, become main pincers support reaction application point, there is spring 11 to support between connector 3 and the back-up tong afterbody 12 and forms expansion link, for being rigidly connected, main pincers tailstock 1 end is a spheroid 2 between urceolus 10 and the back-up tong afterbody 12, and spheroid 2 constitutes universal being hinged with connector 3.
As shown in Figure 3, connector 3 sides are provided with torque sensor 13, the lateral pressure signal of main pincers tailstock 1 end spheroid 2 is as main pincers torque signal collection point, when main pincers worker is done, its caudal action power directly acts on torque sensor 13, torque sensor 13 measured moments of torsion are the output torque of main pincers, also are the actual spinner moments of torsion that tubing string bore.
Claims (3)
1. Power Tong master pincers, back-up tong back-guiding rod bindiny mechanism contain main pincers tailstock (1), connector (3), centre pilot (4,9), end cap (5), spring (6,11), urceolus (7,10), main pincers tailstocks (1) are fixed on main pincers housing afterbody, it is characterized in that: connector (3) is fixed on centre pilot (4,9) upper end is flexible connection, urceolus (7 between main pincers tailstock (1) and the connector (3), 10) with back-up tong afterbody (8,12) between for being rigidly connected.
2. a kind of Power Tong master pincers as claimed in claim 1, back-up tong back-guiding rod bindiny mechanism is characterized in that: main pincers tailstock (1) end is spheroid (2).
3. a kind of Power Tong master pincers as claimed in claim 1, back-up tong back-guiding rod bindiny mechanism, it is characterized in that: connector (3) side is provided with torque sensor (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201466130U CN201407003Y (en) | 2009-04-24 | 2009-04-24 | Rear guide rod connecting mechanism for main tongs and back-up tongs of power tongs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201466130U CN201407003Y (en) | 2009-04-24 | 2009-04-24 | Rear guide rod connecting mechanism for main tongs and back-up tongs of power tongs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201407003Y true CN201407003Y (en) | 2010-02-17 |
Family
ID=41677936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201466130U Expired - Fee Related CN201407003Y (en) | 2009-04-24 | 2009-04-24 | Rear guide rod connecting mechanism for main tongs and back-up tongs of power tongs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201407003Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196470A (en) * | 2014-09-03 | 2014-12-10 | 德州联合石油机械有限公司 | Continuous-spinning assembly and disassembly frame and torque and rotation speed control method |
| CN110952938A (en) * | 2019-11-22 | 2020-04-03 | 濮阳市宝利通石油机械有限公司 | Automatic hydraulic power combination tongs |
-
2009
- 2009-04-24 CN CN2009201466130U patent/CN201407003Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196470A (en) * | 2014-09-03 | 2014-12-10 | 德州联合石油机械有限公司 | Continuous-spinning assembly and disassembly frame and torque and rotation speed control method |
| CN110952938A (en) * | 2019-11-22 | 2020-04-03 | 濮阳市宝利通石油机械有限公司 | Automatic hydraulic power combination tongs |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100217 Termination date: 20170424 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |