CN101863010A - Back guide rod connecting mechanism of main pincers and back pincers of power pincers - Google Patents
Back guide rod connecting mechanism of main pincers and back pincers of power pincers Download PDFInfo
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- CN101863010A CN101863010A CN200910135162A CN200910135162A CN101863010A CN 101863010 A CN101863010 A CN 101863010A CN 200910135162 A CN200910135162 A CN 200910135162A CN 200910135162 A CN200910135162 A CN 200910135162A CN 101863010 A CN101863010 A CN 101863010A
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- pincers
- main
- main pincers
- tong
- power
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Abstract
The invention relates to a back guide rod connecting mechanism of main pincers and back pincers of power pincers, which comprises a tail seat of the main pincers and a back guide rod component. The tail seat of the main pincers is fixed at the tail of the shell of the main pincers, the back guide rod component is connected with the tail seat of the main pincers through a universal hinge, the back guide rod component is rigidly connected with the tail of the back pincers, and an action point of a supporting reverse force of the main pincers is at the center of the universal hinge when working. The implementation of the mechanism obviously improves the practical torsion of the power pincers which consist of the main pincers and the back pincers to a tubular column, improves the damage of the tubular column to be clamped and the wear of a screw thread turn buckle of the tubular column, takes the center of the universal hinge as a torsion testing and acquiring point, can obviously improve the accuracy of the power pincers to practically detect the torsion, and has obvious economic benefit.
Description
Technical field
The present invention relates to unload the Power Tong of 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 threaded connection place 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.
Purpose of the present invention 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 invention 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 present invention 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 present invention, 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), end cap (5), spring (6), urceolus (7), main pincers tailstocks (1) are fixed on main pincers housing afterbody, it is characterized in that: connector (3) is fixed on centre pilot (4) upper end, be flexible connection between main pincers tailstock (1) and the connector (3), between urceolus (7) and the back-up tong afterbody (8) 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 |
|---|---|---|---|
| CN200910135162A CN101863010A (en) | 2009-04-18 | 2009-04-18 | Back guide rod connecting mechanism of main pincers and back pincers of power pincers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910135162A CN101863010A (en) | 2009-04-18 | 2009-04-18 | Back guide rod connecting mechanism of main pincers and back pincers of power pincers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101863010A true CN101863010A (en) | 2010-10-20 |
Family
ID=42955034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910135162A Pending CN101863010A (en) | 2009-04-18 | 2009-04-18 | Back guide rod connecting mechanism of main pincers and back pincers of power pincers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101863010A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358534A (en) * | 2014-10-31 | 2015-02-18 | 无锡中地地质装备有限公司 | Guide rod structure for dismounting pipe |
| CN104535238A (en) * | 2014-11-24 | 2015-04-22 | 江苏如石机械有限公司 | Turn-lock torque measuring and digitally displaying device for large power tongs |
-
2009
- 2009-04-18 CN CN200910135162A patent/CN101863010A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358534A (en) * | 2014-10-31 | 2015-02-18 | 无锡中地地质装备有限公司 | Guide rod structure for dismounting pipe |
| CN104535238A (en) * | 2014-11-24 | 2015-04-22 | 江苏如石机械有限公司 | Turn-lock torque measuring and digitally displaying device for large power tongs |
| CN104535238B (en) * | 2014-11-24 | 2017-01-18 | 江苏如石机械有限公司 | Turn-lock torque measuring and digitally displaying device for large power tongs |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20101020 |