CN2463532Y - Pneumatic casing back-up tongs - Google Patents
Pneumatic casing back-up tongs Download PDFInfo
- Publication number
- CN2463532Y CN2463532Y CN 00262157 CN00262157U CN2463532Y CN 2463532 Y CN2463532 Y CN 2463532Y CN 00262157 CN00262157 CN 00262157 CN 00262157 U CN00262157 U CN 00262157U CN 2463532 Y CN2463532 Y CN 2463532Y
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- CN
- China
- Prior art keywords
- binding clip
- tong
- ring gear
- millimeters
- fixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model belongs to the technical field of petroleum drilling, which is a special device of a lower sleeve pipe. The utility model is composed of a housing, an internal gear ring (13), an air cylinder (1), a tong head (7), a tooth block, etc. The utility model is characterized in that an upper and a lower press plates (8), (10) are provided with large circular holes, and the periphery of the holes are uniformly distributed with pin shafts (6) of the tong head and the tong head (7). The tail portion of the tong head (7) is provided with gear wheels which have the same modulus with the internal gear ring (13), and the periphery of the tong head (7) is provided with the internal gear ring (13) which is connected with the air cylinder (1) through an arm plate (4). The external part of the internal gear ring (13) is provided with a strengthening wheel (12); the lower part is provided with a rectangular seat (15) which is matched with a quadrate complement core of a rotary table, and a back tong of the sleeve pipe can independently clamp and fix the sleeve pipe. An opening type is changed to be a closed type, and the utility model has larger improvement to drilling technique of the lower sleeve pipe.
Description
The utility model belongs to the petroleum drilling technology field, is a kind of in oil drilling setting of casing process, the special equipment of use.Its effect is when well head connects two sleeve pipe screw threads, and fixing parts casing pipe down cooperates the hydraulic casing tongs on top to finish the two screw threads task that spins.This equipment is a kind of by the rotation of cylinder promotion ring gear, the pneumatic casing back-up tong of parts casing pipe under drive binding clip and block teeth, chucking are also fixing.
The oil drilling casing job is to have the sleeve pipe of screw buckle to link up at well head one by one at two ends, delivers to thousands of meters down-hole.In China, the instrument of rotation upper sleeve is a hydraulic casing tongs when connecting screw buckle at present, chucking and the fixing main use Type B tongs of parts casing pipe down.Also has a kind of more advanced hydraulic casing tongs that has back-up tong.It is divided into two parts.Top is hydraulic casing tongs, and the lower part is the back-up tong of fixed sleeving, and hydraulic casing tongs and back-up tong are as a whole.The back-up tong of lower part is taked open type.The housing of open type back-up tong is formed a circular shell by two or more circular arc bodies, and circular shell can be opened, and also can close.Can make sleeve pipe enter or withdraw from casing back-up tong after opening; Close binding clip and the block teeth chucking and the fixing parts casing pipe down of rear sleeve back-up tong.
The purpose of this utility model provides the as a whole pneumatic casing back-up tong of a kind of circular shell, the i.e. pneumatic casing back-up tong of closed type.Simultaneously, casing back-up tong is separated from the hydraulic casing tongs of band back-up tong, independently finished chucking and fixed sleeving work, make the hydraulic casing tongs reduced volume, weight reduction reduces cost, handled easily, and everything goes well with your work carries out for the guarantee setting of casing.
Pneumatic casing back-up tong is made up of institutes such as housing, ring gear, cylinder, binding clip, binding clip axle and block teeth.It is characterized in that housing is made up of top board, lower platen, the thickness of upper and lower pressing plate is between 10 millimeters to 30 millimeters.A big hole is all arranged on the upper and lower pressing plate, and the diameter of big hole is between 210 millimeters to 310 millimeters.Be evenly distributed with small sircle hole around the big hole.The quantity of small sircle hole is 3 to 6.The binding clip axle is installed on each small sircle hole.The binding clip axle passes small sircle hole, and two ends are fixed in the middle of the upper and lower pressing plate with nut.Binding clip is housed in the middle of each binding clip axle.The binding clip afterbody is porose, and matched in clearance is adopted in binding clip axle and binding clip afterbody hole.Block teeth are arranged at the binding clip top, and the assembling mode of binding clip and block teeth is identical with the hydraulic casing tongs of prior art.The binding clip afterbody has the gear identical with the ring gear modulus, and this gear only has tooth in 180 ° of scopes.Binding clip is with the ring gear of a closure outward.The internal tooth of ring gear is meshed with the tail gear of binding clip.Be fixed with the arm plate on the ring gear.The arm plate is that those skilled in the art are easy to accomplish with connecting of ring gear.The arm plate connects with cylinder piston rod by Xiao's axle, and cylinder is fixed in the middle of the upper and lower pressing plate.Cylinder pusher arm plate, arm plate promote ring gear and rotate.Ring gear rotates and drives the rotation of binding clip gear, the rotation binding clip.Block teeth chucking and fixed sleeving on the binding clip.Ring gear need remain on the center of big hole, and when avoiding cylinder pusher arm plate, ring gear departs from the big hole center, the problem of discontinuity when causing gears engaged.Be with 4 to 10 righting wheels at ring gear outer.Righting wheel is installed on the eccentric shaft, and eccentric shaft is fixed on the ring gear outside with nut.The structure of righting wheel, shape, mounting means, and role and existing hydraulic casing tongs are identical.
For making the righting wheel rotation flexibly, between righting wheel and the eccentric shaft bearing is installed.Existing hydraulic casing tongs righting wheel is taked this structure exactly.
For making whole gravity of pneumatic casing back-up tong support down-hole casing, it is 10 millimeters to 30 millimeters steel plate that a thickness is fixed on the top of pneumatic casing back-up tong.The effect of steel plate is whole gravity of bearing down-hole casing, can also change casing elevator on steel plate, makes things convenient for the workman to operate.
For pneumatic casing back-up tong is fixed on the rotating disk of rig floor, the rectangular base that matches with the well head square bushing is arranged at the bottom of pneumatic casing back-up tong, base is fixed on the bottom of lower platen with screw.This base is put into square bushing during use.Rectangular base can be born, the whole reaction torques during shackle.
It is of the present utility model that the good results are evident.For casing job provides a kind of circular shell as a whole pneumatic casing back-up tong, i.e. the pneumatic casing back-up tong of closed type.Under the situation that circular shell is not opened, the binding clip of casing back-up tong and block teeth can tighten and fixing parts casing pipe down, also can be separated from sleeve pipe.Simultaneously, casing back-up tong is separated from the hydraulic casing tongs of band back-up tong, independently finished chucking and fixed sleeving work, make the hydraulic casing tongs reduced volume, weight reduction.
Embodiment:
Pneumatic casing back-up tong housing top board (8), lower platen (10) thickness are 20 millimeters.A big hole is all arranged on the upper and lower pressing plate (8) (10), and two big holes are on a center line, and the diameter of big hole is 260 millimeters.Be evenly distributed with small sircle hole around the big hole.The quantity of small sircle hole is 5.Binding clip Xiao axle (6) is installed on each small sircle hole.Binding clip Xiao axle (6) two ends are fixed in the middle of the upper and lower pressing plate (8) (10) with nut (16).Binding clip (7) is arranged in the middle of each binding clip Xiao axle (6).Binding clip (7) is gone up porose, and the diameter in hole is 50 millimeters.Binding clip Xiao axle (6) passes binding clip (7) hole, and binding clip (7) hole and binding clip Xiao axle (6) adopt matched in clearance.Binding clip is equipped with the block teeth that can change on (7), and is identical with the block teeth mounting method of hydraulic casing tongs.It is 5 gear that binding clip (7) afterbody has modulus, and this gear only has tooth in 180 ° of scopes.The outer ring gear (13) that is with a closure of binding clip (7).The internal tooth of ring gear (13) is identical with the tail gear modulus of binding clip (7).On ring gear (13), be fixed with an arm plate (4) with bolt (5), the thickness of arm plate (4) is 20 millimeters.Arm plate (4) is Xiao's axle (3) of 25 millimeters by diameter, connects the piston rod of cylinder (1), and cylinder (1) is fixed in the middle of the upper and lower pressing plate (8) (10).During casing job, the piston of cylinder (1) is flexible can pusher arm plate (4), and arm plate (4) drives ring gear (13) and rotates.Ring gear (13) rotates and drives binding clip (7) rotation.Block teeth chucking and fixed sleeving on the binding clip (7).Outer 5 righting wheels (12) that are with at ring gear (13).With nut (17) eccentric shaft (9) is fixed on ring gear (13) outside.Between each righting wheel (12) and the eccentric shaft (9) two bearings (11) are installed, make righting wheel (12) rotation flexibly.Fix a thickness on the top of pneumatic casing back-up tong and be 25 millimeters steel plate (18).Be fixed with the base (15) that matches with the well head square bushing in the bottom of pneumatic casing back-up tong.Base (15) is 340 millimeters a square, highly is 100 millimeters.Base (15) is fixed on the bottom of lower platen (10) with the base screw (14) of M20.During use, this base (15) is seated in the oil-well rig turntable square bushing.
Claims (4)
1, pneumatic casing back-up tong is by housing, ring gear (13), cylinder (1), binding clip (7), binding clip Xiao axle (6) and block teeth etc. are formed, it is characterized in that housing is by top board (8), lower platen (10) is formed, on, the thickness of lower platen (8) (10) is 10 millimeters to 30 millimeters, on, a big hole is all arranged on the lower platen (8) (10), the diameter of big hole is between 210 millimeters to 310 millimeters, be evenly distributed with small sircle hole around the big hole, the quantity of small sircle hole is 3 to 6, binding clip Xiao axle (6) is installed on each small sircle hole, binding clip Xiao axle (6) passes small sircle hole and is fixed on nut (16), press down in the middle of the plate of (8) (10), binding clip (7) is housed in the middle of each binding clip Xiao axle (6), there are block teeth on binding clip (7) top, binding clip (7) afterbody has and the identical gear of ring gear (13) modulus, this gear only has tooth in 180 ° of scopes, the outer ring gear (13) that is with a closure of binding clip (7), the internal tooth of ring gear (13) and the engagement of binding clip (7) tail gear, be fixed with arm plate (4) on the ring gear (13), arm plate (4) connects cylinder (1) by Xiao's axle (3), cylinder (1) is fixed on, in the middle of the lower platen (8) (10), outer 4 to 10 righting wheels (12) that are with at ring gear (13), righting wheel (12) is installed on the eccentric shaft (9), and eccentric shaft (9) is fixed on ring gear (13) outside with nut (17).
2, pneumatic casing back-up tong as claimed in claim 1 is characterized in that: between righting wheel (12) and the eccentric shaft (9) bearing (11) is arranged.
3, pneumatic casing back-up tong as claimed in claim 1 or 2 is characterized in that: it is 10 millimeters to 30 millimeters steel plate (18) that a thickness is fixed on the top of pneumatic casing back-up tong.
4, pneumatic casing back-up tong as claimed in claim 1 or 2 is characterized in that: be fixed with the rectangular base (15) that matches with the well head square bushing in the bottom of pneumatic casing back-up tong.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00262157 CN2463532Y (en) | 2000-11-17 | 2000-11-17 | Pneumatic casing back-up tongs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00262157 CN2463532Y (en) | 2000-11-17 | 2000-11-17 | Pneumatic casing back-up tongs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2463532Y true CN2463532Y (en) | 2001-12-05 |
Family
ID=33617501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00262157 Expired - Fee Related CN2463532Y (en) | 2000-11-17 | 2000-11-17 | Pneumatic casing back-up tongs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2463532Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1293280C (en) * | 2003-09-06 | 2007-01-03 | 傅永森 | Back-up tong binding clip chucking mechanism for open type power-driven clamp |
| CN102409988A (en) * | 2012-01-10 | 2012-04-11 | 莱州市霸力石油机械有限公司 | Oil pipe pneumatic back tongs |
| CN102409987A (en) * | 2012-01-10 | 2012-04-11 | 莱州市霸力石油机械有限公司 | Two-way pneumatic oil pipe back tongs |
| CN108942315A (en) * | 2018-09-10 | 2018-12-07 | 中石化四机石油机械有限公司 | Large torque rotating clamping device |
| CN109236213A (en) * | 2018-11-19 | 2019-01-18 | 中国石油集团渤海钻探工程有限公司 | For quickly transferring the transfer device of casing tong in drilling well casing job |
-
2000
- 2000-11-17 CN CN 00262157 patent/CN2463532Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1293280C (en) * | 2003-09-06 | 2007-01-03 | 傅永森 | Back-up tong binding clip chucking mechanism for open type power-driven clamp |
| CN102409988A (en) * | 2012-01-10 | 2012-04-11 | 莱州市霸力石油机械有限公司 | Oil pipe pneumatic back tongs |
| CN102409987A (en) * | 2012-01-10 | 2012-04-11 | 莱州市霸力石油机械有限公司 | Two-way pneumatic oil pipe back tongs |
| CN108942315A (en) * | 2018-09-10 | 2018-12-07 | 中石化四机石油机械有限公司 | Large torque rotating clamping device |
| CN109236213A (en) * | 2018-11-19 | 2019-01-18 | 中国石油集团渤海钻探工程有限公司 | For quickly transferring the transfer device of casing tong in drilling well casing job |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |