CN205101367U - Thread connection locking device and have its gas turbine rotor fastener - Google Patents
Thread connection locking device and have its gas turbine rotor fastener Download PDFInfo
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- CN205101367U CN205101367U CN201520784180.7U CN201520784180U CN205101367U CN 205101367 U CN205101367 U CN 205101367U CN 201520784180 U CN201520784180 U CN 201520784180U CN 205101367 U CN205101367 U CN 205101367U
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- locking device
- rotor
- thread connection
- joiner
- gas turbine
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Abstract
The utility model discloses a thread connection locking device and have its gas turbine rotor fastener, this locking device locate between rotor output connection ware and the shaft coupling, locking device's first end be equipped with with shaft coupling complex external splines, outside the bolt extends locking device along locking device's second end, and locking device's second end be equipped with be used for with fastening nut complex polygonal groove. The utility model discloses thread connection locking device is located between output connection ware and the shaft coupling, and synchronous the rotation is realized with the shaft coupling to the external splines through first end, and the second end is equipped with and is used for fastening nut complex polygonal groove, has realized bolt and fastening nut's anastomosis to avoided the relative rotation between bolt and fastening nut, improved the reliability of using, and the installation dismantlement is convenient, furtherly adopts foretell thread connection to relax the gas turbine rotor fastener of device, easy dismounting, and use reliably.
Description
Technical field
The utility model relates to fastening piece connection area, especially, relates to a kind of thread connection anti-looseness device and has its gas turbine rotor securing means.
Background technique
Scyewed joint is a kind of important connecting mode, is widely used in the field such as machinery, Aero-Space.Static load and temperature change little time, scyewed joint is very reliable.But under the environment that vibration, variable load, impact or high temperature, temperature variation are larger, the frictional force of scyewed joint and pretightening force can reduce even to disappear gradually.After repeated multiple times, scyewed joint may produce loosening, finally loses efficacy.A lot of positions on gas turbine all adopt scyewed joint, such as rotor connecting bolt and tightening nut, therefore, for preventing relatively rotating between bolts and nuts, need take locking measure.
Prevent from scyewed joint from loosening, lost efficacy being exactly prevent relatively rotating between screw bolt and nut.Can be divided into that friction is locking, machinery is locking according to working principle, to destroy kinematic pair relation locking etc.Below the pluses and minuses of every loosing Prevention Technology:
Rubbing locking is there is certain axial force between screw pair that the mode of pretension makes to tighten by connecting and keep certain and have friction torque and reach and prevent from connecting the object got loose.Conventional friction anti-loose method has spring washer, wavy spring packing ring, conical spring washer, self-locking nut etc.In general, friction anti-loose structure is simple, easy to operate, but its locking poor reliability, should not be used for vibrating, to impact and in operating mode that dynamic load is larger.
Machinery is locking is utilize the relative movement between various metal stopping element prevention nut bolt.Common mechanical anti-loose method has cotter pin and hexagon nut, lock washer, steel wire etc. of connecting.The occasion that this kind of locking mode is applicable to larger vibration, impact, occasion, particularly machine internal at a high speed not easily check, reliably locking, but not quick detachable.
Destroying kinematic pair relation locking is a kind of permanent type method, reaches locking object by destroying screw pair.Conventional destruction kinematic pair relation anti-loose method has riveted, rushes point, soldering etc.This mode is reliably locking, but not reproducible use.
As can be seen here, there is poor reliability in existing various anti-loose structure, the operating mode that inadaptable vibration, impact and dynamic load are large or not quick detachable, not re-usable defect.
Model utility content
The utility model provides a kind of thread connection anti-looseness device and has its gas turbine rotor securing means, to solve the large operating mode of existing be threaded inadaptable vibration, impact and dynamic load or not quick detachable, not re-usable technical problem.
The technical solution adopted in the utility model is as follows:
According to an aspect of the present utility model, a kind of thread connection anti-looseness device is provided, this locking device is located at rotor and is exported between joiner and coupling, the first end of locking device is provided with the external splines coordinated with coupling, bolt extends outside locking device along the second end of locking device, and the second end of locking device is provided with the polygon groove for coordinating with tightening nut.
Further, the second end external cylindrical surface of locking device and rotor export the endoporus of joiner is tight fit connection.
Further, the first end of locking device is circumferentially interval with three groups of external spliness, often organizes external splines and is provided with two spline tooths coordinated with coupling inwall.
Further, the polygon groove being located at the second end of locking device is the plum blossom groove with the hexagon head Spielpassung of tightening nut.
According to another aspect of the present utility model, a kind of gas turbine rotor securing means is provided, comprise the coupling that the rotor that connects with rotor exports joiner, connects with reducer input shaft, rotor exports between joiner and coupling and is provided with above-mentioned thread connection anti-looseness device.
Further, gas turbine rotor securing means also comprises: be located at casing and rotor and export bearing between joiner, bearing supports through bearing support.
The utility model has following beneficial effect:
The utility model thread connection anti-looseness device, between output joiner and coupling, synchronous axial system is realized by the external splines of first end and coupling, and the second end is provided with the polygon groove coordinated for tightening nut, achieve the anastomosis of bolt and tightening nut, and avoid relatively rotating between bolt and tightening nut, improve the reliability of use, and installing/dismounting is convenient; Further, adopt the gas turbine rotor securing means of above-mentioned scyewed joint loosening device, easy accessibility, and use reliable.
Except object described above, feature and advantage, the utility model also has other object, feature and advantage.Below with reference to figure, the utility model is described in further detail.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the utility model preferred embodiment gas turbine rotor securing means;
Fig. 2 be Fig. 1 along F to partial schematic diagram;
Fig. 3 is the structural representation of the utility model preferred embodiment locking device;
Fig. 4 is the generalized section of the utility model preferred embodiment locking device.
Description of reference numerals:
1, tightening nut; 2, bearing; 3, bolt; 4, locking device; 41, external splines; 42, polygon groove;
5, rotor exports joiner; 6, bearing support; 7, coupling.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
With reference to Fig. 1, preferred embodiment of the present utility model provides a kind of gas turbine rotor securing means, comprise the coupling 7 that the rotor connected with rotor exports joiner 5, connects with reducer input shaft, this rotor exports joiner 5 and connects through spline fitted with between coupling 7, wherein, rotor exports between joiner 5 and coupling 7 and is provided with thread connection anti-looseness device.With reference to Fig. 2 to Fig. 4, the first end of the present embodiment locking device 4 is provided with the external splines 41 coordinated with coupling 7, bolt 3 extends outside locking device 4 along the second end of locking device 4, and the second end of locking device 4 is provided with the polygon groove 42 for coordinating with tightening nut 1.
During gas turbine work, locking device 4 and rotor export joiner 5, coupling 7 by spline fitted synchronous axial system each other, achieve the anastomosis of bolt 3 and tightening nut 1, and to avoid between bolt 3 and tightening nut 1 relatively rotate, improve the reliability of use; In addition, when dismantling tightening nut 1, the nut head of tightening nut 1 can oppress locking device 4, and when tightening nut 1 is back-outed completely, locking device 4 can export the endoporus disengagement of joiner 5 just from rotor, dismounting is convenient.
Alternatively, in order to limit the movement of locking device 4 along its axis, the endoporus that the second end external cylindrical surface of locking device 4 and rotor export joiner 5 is tight fit connection.
Preferably, with reference to Fig. 2, the external splines profile of tooth that the external splines 41 on the present embodiment locking device 4 and rotor export on joiner 5 is identical.With reference to Fig. 3, the first end of locking device 4 is circumferentially interval with three groups of external spliness 41, often organizes external splines 41 and is provided with two spline tooths coordinated with coupling 7 inwall.After locking device 4 turns is fitted on position, the six tooth splines being positioned at first end align with the spline that rotor exports joiner 5 relevant position, are positioned at the polygon groove of the second end and the nut head Spielpassung of tightening nut 1.
Preferably, the polygon groove 42 being located at the second end of locking device 4 is the plum blossom groove with the hexagon head Spielpassung of tightening nut 1.
With reference to Fig. 1, the present embodiment gas turbine rotor securing means also comprises: be located at casing and rotor and export bearing 2 between joiner 5, bearing 2 supports through bearing support 4.
The present embodiment locking device 4 structure is simple, reliably locking, dismounting easily, also has the effect of assembling mistake proofing, shock absorbing: when assembling tightening nut 1, bolt 3 need be made to stretch under the pulling force preset, then tightening nut 1 is screwed to till only contacting rotor output joiner 5.If therefore assembling time bolt 3 pulling force mistake is set, the position of tightening nut 1 hexagon head will change, then, after locking device 4 loads, the spline that the external splines of front end 41 and rotor export joiner 5 will misplace, can not complete matching.Preferably, locking device 4 is aluminium, and gas turbine is when starting, shutting down and change working state, and rotor can produce slight moment axial float, and this impact is cushioned by the aluminium matter spline end face of locking device, prevents from damaging gas turbine parts.Empirical tests, the present embodiment locking device 4 is reliable on gas turbine.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. a thread connection anti-looseness device, it is characterized in that, this locking device (4) is located at rotor and is exported between joiner (5) and coupling (7), the first end of described locking device (4) is provided with the external splines (41) coordinated with described coupling (7), bolt (3) extends described locking device (4) outward along the second end of described locking device (4), and the second end of described locking device (4) is provided with the polygon groove (42) for coordinating with tightening nut (1).
2. thread connection anti-looseness device according to claim 1, is characterized in that,
The endoporus that second end external cylindrical surface of described locking device (4) and described rotor export joiner (5) is tight fit connection.
3. thread connection anti-looseness device according to claim 1, is characterized in that,
The first end of described locking device (4) is circumferentially interval with three groups of external spliness (41), often organizes external splines (41) and is provided with two spline tooths coordinated with described coupling (7) inwall.
4. thread connection anti-looseness device according to claim 1, is characterized in that,
The described polygon groove (42) being located at the second end of described locking device (4) is the plum blossom groove with the hexagon head Spielpassung of tightening nut (1).
5. a gas turbine rotor securing means, it is characterized in that, comprise the coupling (7) that the rotor connected with rotor exports joiner (5), connects with reducer input shaft, described rotor export be provided with between joiner (5) and described coupling (7) as arbitrary in Claims 1-4 as described in thread connection anti-looseness device.
6. gas turbine rotor securing means according to claim 5, is characterized in that,
Also comprise: be located at casing and described rotor and export bearing (2) between joiner (5), described bearing (2) supports through bearing support (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520784180.7U CN205101367U (en) | 2015-10-12 | 2015-10-12 | Thread connection locking device and have its gas turbine rotor fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520784180.7U CN205101367U (en) | 2015-10-12 | 2015-10-12 | Thread connection locking device and have its gas turbine rotor fastener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205101367U true CN205101367U (en) | 2016-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520784180.7U Active CN205101367U (en) | 2015-10-12 | 2015-10-12 | Thread connection locking device and have its gas turbine rotor fastener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205101367U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223549A (en) * | 2017-12-28 | 2018-06-29 | 中国航发四川燃气涡轮研究院 | A kind of lock washer with double ears and its method for dismounting |
| CN109083920A (en) * | 2018-09-27 | 2018-12-25 | 中车戚墅堰机车有限公司 | A kind of bolt locking device |
| CN110873116A (en) * | 2019-11-25 | 2020-03-10 | 中国重汽集团济南动力有限公司 | Thread cross key locking mechanism |
-
2015
- 2015-10-12 CN CN201520784180.7U patent/CN205101367U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223549A (en) * | 2017-12-28 | 2018-06-29 | 中国航发四川燃气涡轮研究院 | A kind of lock washer with double ears and its method for dismounting |
| CN109083920A (en) * | 2018-09-27 | 2018-12-25 | 中车戚墅堰机车有限公司 | A kind of bolt locking device |
| CN110873116A (en) * | 2019-11-25 | 2020-03-10 | 中国重汽集团济南动力有限公司 | Thread cross key locking mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 412002 Dong Jiaduan, Zhuzhou, Hunan Patentee after: China Hangfa South Industrial Co. Ltd. Address before: 412002 Dong Jiaduan, Zhuzhou, Hunan Patentee before: China Southern Airlines Industry (Group) Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder |