CN202467711U - Unidirectional rotation locking device - Google Patents
Unidirectional rotation locking device Download PDFInfo
- Publication number
- CN202467711U CN202467711U CN2011204818529U CN201120481852U CN202467711U CN 202467711 U CN202467711 U CN 202467711U CN 2011204818529 U CN2011204818529 U CN 2011204818529U CN 201120481852 U CN201120481852 U CN 201120481852U CN 202467711 U CN202467711 U CN 202467711U
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- China
- Prior art keywords
- slips
- slip sleeve
- rotation locking
- unidirectional rotation
- locking system
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Abstract
A unidirectional rotation locking device which is applied for an oil field downhole tool is composed of a slips sleeve, slips, friction blocks, torsion springs and springs. The slips sleeve has two protruding edges shaped like flanges. The slips are wedge blocks with eccentric shafts. The slips and the friction blocks are equipped in the flanges of the slips sleeve. Torsion springs provide the slips with expansion force. The working faces of the slips are made tightly attached on the inner wall of a sleeve pipe. The slips can rotate around the eccentric shafts so as to change the maximum external diameter of the whole device and make the device capable of adapting to divergent internal diameters of sleeve pipes with different specifications. The friction blocks which have the expansion force supplied by the compression springs make the whole device supported inside the sleeve pipe without sliding downwards. The unidirectional rotation locking device is only prevented from rotating towards one direction while the reverse rotation and the axial movement are not restrained.
Description
Technical field
The utility model relates to a kind of unidirectional rotation locking system, particularly relates to the unidirectional rotation locking system that a kind of oil field downhole tool uses.
Background technology
The rotation locking system of oil well downhole tool use at present, or utilize the oil pipe inside and outside differential pressure, with oil pipe and sleeve pipe locking; Like hydraulic anchor, but it is that instrument and sleeve pipe are locked fully, and instrument can not circumferentially rotate; Can not move axially, thereby certain limitation is arranged; Or, anchor watt is stretched out, thereby tool lock is fixed on the sleeve pipe through rotating the rotation of oil pipe drive instrument; Like Chinese patent 200520084580.3, it is to let sloping piece and slips relatively rotate, thereby slips is stretched out; Tool lock is fixed on the sleeve pipe, and this mode is in practical application, and sloping piece and slips are difficult for producing relative rotation; Thereby be not easy to realize locking, in heavy oil wells, more difficult realization.
Summary of the invention
The utility model provides a kind of unidirectional rotation locking system, overcomes the deficiency of prior art, realizes unidirectional rotation latch functions.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: the unidirectional rotation locking system of the utility model; Form by slip sleeve, slips, brake pad, torsion spring, spring; Said slips is with the flange of two likeness in form flanges; Several piece slips and several piece brake pad are installed in two flanges of slip sleeve around the slip sleeve axis respectively uniformly, and slips provides expansionary force by torsion spring, and brake pad provides expansionary force by the compression spring.
Preferably, said slip sleeve flange and central tube are integral piece.
Preferably, said slip sleeve flange and central tube are the group welding piece that welds together.
Preferably, said slip sleeve flange is the assembly to be threaded together with central tube.
Preferably, said slip sleeve flange has axial groove, and the groove proximal ends that is used to install slips is a concave arc, and the groove that is used to install brake pad is rectangular, and evenly distributes around the slip sleeve axis respectively.
Preferably, said slip sleeve flange cylindrical has screw thread, is connected with pressure cap, and said pressure cap retrains slips and brake pad two ends.
Preferably, said slip sleeve flange is that welding manner is connected with pressure cap, and slips and brake pad two ends are retrained.
Preferably, said slip sleeve flange has axial hole, and the hole that is used to install slips is a circular hole, and the hole that is used to install brake pad is a square hole, and evenly distributes around the slip sleeve axis respectively, and this structure no longer needs pressure cap that slips and brake pad are retrained.
Preferably, said slip sleeve both ends or one end and shift fork join, and to crossing shift fork and outside transfer torque, also can be designed to one with other workpiece.
Preferably, said slips is the voussoir of band eccentric shaft, and eccentric shaft stretches out from the voussoir two ends, and work plane is and eccentric shaft out-of-alignment arc surface that the work plane two ends respectively are chamferings.
Preferably, said slips work plane has axial tooth.
Preferably, respectively adorn a torsion spring on the eccentric shaft of said slips two ends, dial on the slip sleeve central tube for one, dial on slips for one, two torsion springs are symmetric shape.
Preferably, said brake pad external surface is the arc surface coaxial with slip sleeve, and two ends respectively are chamferings.
Preferably, said brake pad inner surface is drilled with two counterbores, and mounting spring between the slip sleeve central tube, and spring one end is in the counterbore of brake pad, and an end is pressed on the slip sleeve central tube cylindrical.
When the utility model unidirectional locking arrangement was worked in sleeve pipe, brake pad was under spring action, and external surface supports on internal surface of sleeve pipe, kept whole locking system not glide in certain position.Slips is expanded outside axially under the torsion spring effect, and work plane is close to internal surface of sleeve pipe, when slip sleeve will turn clockwise, and slips work plane and sleeve pipe wedging, thus instrument can not be rotated; When slip sleeve will be rotated counterclockwise, slips work plane and sleeve pipe unclamped, thereby can rotate smoothly; When device moves up and down, slips receive under the chamfering effect and not with the internal surface of sleeve pipe grappling, thereby can move smoothly.
The beneficial effect of the utility model is: unidirectional rotation locking system only is restricted in the down-hole can not be towards the rotation of direction, reverse rotation and move axially then unfettered.
Description of drawings
For above-mentioned purpose, the feature and advantage that make the utility model can be more obviously understandable, the utility model is further described below in conjunction with the accompanying drawing and the specific embodiment.
Fig. 1 is the structure principle chart of a kind of embodiment of the utility model;
Fig. 2 is the axial view of slip sleeve;
Fig. 3 is the shape and structure sketch map of a kind of embodiment of slips;
Fig. 4 is that another of Fig. 3 is to view;
Fig. 5 is the structure principle chart of the another kind of embodiment of the utility model;
Fig. 6 is the shape and structure sketch map of the another kind of embodiment of slips.
The specific embodiment
Referring to Fig. 1-Fig. 6, the unidirectional rotation locking system of the utility model comprises slip sleeve (2), brake pad (3), spring (4), slips (5), torsion spring elements such as (6).
Fig. 2 is the axial view of slip sleeve (2); Respectively there is the flange of a likeness in form flange at said slip sleeve (2) two ends; Flange and central tube are to be wholely set; Have the groove that slips (5) and brake pad (3) are installed on the flange, the groove that is used to install slips (5) is the concave arc shape, and the groove that is used to install brake pad (3) is rectangular.The group welding piece that said slip sleeve (2) flange and central tube also weld together also can be by the assembly that is threaded.Said slip sleeve (2) is connected with shift fork (7), and slip sleeve (2) is through shift fork (7) and outside transfer torque.
Fig. 3 is the shape and structure sketch map of a kind of embodiment of slips (5), and said slips (5) is the voussoir of band eccentric shaft, and an eccentric shaft is respectively stretched out at the voussoir two ends; The work plane two ends respectively are chamferings; When device moves axially, play the guiding role, device is not stuck in the sleeve pipe.
Fig. 4 be another of slips shown in Figure 3 (5) to view, work plane is and eccentric shaft out-of-alignment arc surface.
Fig. 1 is the structure principle chart of a kind of embodiment of the utility model, and said brake pad (3) external surface is and the coaxial arc surface of slip sleeve (2), and two ends respectively are chamferings, and brake pad (3) inner surface has two counterbores.
Said slips (5) and brake pad (3) are installed in respectively in the corresponding groove of slip sleeve (2) flange, and slips (5) can turn an angle around eccentric shaft, and brake pad (3) can move radially certain distance; Slips (5) and brake pad (3) two ends are retrained by pressure cap (1), and pressure cap (1) and slip sleeve (2) flange are by being threaded.Said pressure cap (1) also can be connected with the mode of welding with slip sleeve (2) flange; Certainly, said slip sleeve (2) flange also can have axial hole, and the hole that is used to install slips (5) is circular, and the hole that is used to install brake pad (3) is a rectangle, and just no longer need pressure cap (1) that slips (5) and brake pad (3) are retrained this moment.
Said slips (5) two ends eccentric shaft is respectively adorned a torsion spring (6); Two torsion springs (6) are symmetric shape; (6) one of torsion springs are dialled on slips (5), dial on slip sleeve (2) central tube for one, and the elastic force of torsion spring (6) makes slips (5) expand outwardly around eccentric shaft.
Mounting spring (4) in the counterbore of said brake pad (3) inner surface, spring (4) other end is pressed on slip sleeve (2) the central tube cylindrical, and spring (4) is in compressive state, outwards supports brake pad (3).
During work, brake pad (3) is under spring (4) effect, and external surface supports on internal surface of sleeve pipe, keeps whole device not glide in certain position; Slips (5) can rotate around eccentric shaft; Thereby change the maximum outside diameter of whole device; Make device can adapt to the casing inner diameter of different size, torsion spring (6) makes slips (5) keep farthest expansion constantly, guarantees that slips (5) work plane closely contacts with internal surface of sleeve pipe.When slip sleeve (2) will turn clockwise, slips (5) work plane and sleeve pipe wedging, thus device can not be rotated; When slip sleeve (2) will be rotated counterclockwise, slips (5) work plane and sleeve pipe unclamped, thereby can rotate smoothly; When device moved up and down, slips (5) was received under the effect of work plane chamfering, not with the internal surface of sleeve pipe grappling, thereby can move smoothly.
That Fig. 5 is the another kind of embodiment of the utility model, and slip sleeve (2) is designed to one with outside workpiece, no longer needs shift fork (7) and outside transfer torque this moment.
Fig. 6 is the shape and structure sketch map of the another kind of embodiment of slips (5), and its work plane has axial tooth, with the frictional force of increase with sleeve pipe.
More than to unidirectional rotation locking system that the utility model provided; Carried out detailed introduction; Used concrete example among this paper the principle and the embodiment of the utility model are set forth, the explanation of above embodiment just is used to help to understand the method and the core concept thereof of the utility model; Simultaneously, for one of ordinary skill in the art, according to the thought of the utility model, the part that on the specific embodiment and range of application, all can change, in sum, this description should not be construed as the restriction to the utility model.
Claims (8)
1. unidirectional rotation locking system; Form by slip sleeve, slips, brake pad, torsion spring, spring; It is characterized in that: several piece slips and several piece brake pad are installed in two flanges of slip sleeve around the slip sleeve axis respectively uniformly; Slips provides expansionary force by torsion spring, and brake pad provides expansionary force by the compression spring.
2. unidirectional rotation locking system according to claim 1 is characterized in that: slip sleeve flange and central tube are one, also can be group welding piece or the assemblies to be threaded together that welds together.
3. unidirectional rotation locking system according to claim 1, it is characterized in that: the flange of slip sleeve has axial groove, and evenly distributes around the slip sleeve axis.
4. unidirectional rotation locking system according to claim 3 is characterized in that: also comprise the pressure cap that slips and brake pad are retrained, said pressure cap and slip sleeve are by being connected with screw thread or connecting with welding manner.
5. unidirectional rotation locking system according to claim 1, it is characterized in that: the flange of slip sleeve has axial hole, and evenly distributes around the slip sleeve axis.
6. unidirectional rotation locking system according to claim 1 is characterized in that: slip sleeve can pass through shift fork and outside transfer torque, also can be designed to one with other workpiece.
7. unidirectional rotation locking system according to claim 1 is characterized in that: said slips is the voussoir of band eccentric shaft, and work plane is and eccentric shaft out-of-alignment arc surface that the work plane two ends respectively are chamferings.
8. unidirectional rotation locking system according to claim 7, it is characterized in that: the slips work plane has axial tooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204818529U CN202467711U (en) | 2011-11-29 | 2011-11-29 | Unidirectional rotation locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204818529U CN202467711U (en) | 2011-11-29 | 2011-11-29 | Unidirectional rotation locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202467711U true CN202467711U (en) | 2012-10-03 |
Family
ID=46915877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204818529U Expired - Fee Related CN202467711U (en) | 2011-11-29 | 2011-11-29 | Unidirectional rotation locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202467711U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104453755A (en) * | 2014-05-28 | 2015-03-25 | 刘庆敏 | One-way rotation locking device |
| CN109356536A (en) * | 2018-12-04 | 2019-02-19 | 湖北三峡职业技术学院 | Rotation drive device for portable probing |
| CN110026930A (en) * | 2019-05-30 | 2019-07-19 | 国网河南省电力公司电力科学研究院 | A kind of telescopic spanner for the construction of transmission tower double-nut bolt |
-
2011
- 2011-11-29 CN CN2011204818529U patent/CN202467711U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104453755A (en) * | 2014-05-28 | 2015-03-25 | 刘庆敏 | One-way rotation locking device |
| CN109356536A (en) * | 2018-12-04 | 2019-02-19 | 湖北三峡职业技术学院 | Rotation drive device for portable probing |
| CN109356536B (en) * | 2018-12-04 | 2024-03-26 | 湖北三峡职业技术学院 | Rotary drive for portable drilling |
| CN110026930A (en) * | 2019-05-30 | 2019-07-19 | 国网河南省电力公司电力科学研究院 | A kind of telescopic spanner for the construction of transmission tower double-nut bolt |
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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: 20121003 Termination date: 20181129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |