CN202220806U - Elastic shaft device - Google Patents
Elastic shaft device Download PDFInfo
- Publication number
- CN202220806U CN202220806U CN2011202926124U CN201120292612U CN202220806U CN 202220806 U CN202220806 U CN 202220806U CN 2011202926124 U CN2011202926124 U CN 2011202926124U CN 201120292612 U CN201120292612 U CN 201120292612U CN 202220806 U CN202220806 U CN 202220806U
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- Prior art keywords
- fixed base
- output shaft
- hole
- elasticity
- connecting rod
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Abstract
The utility model provides an elastic shaft device, comprising an output shaft and a coupling connected with the output shaft through a spline. The elastic shaft device also comprises a connecting piece which comprises a fixed seat, an elastic object, a connecting rod and a looseness preventing member; the fixed seat is installed in a shaft hole of the coupling; the connecting rod is sleeved with the elastic object; the connecting rod passes through the fixed seat and is further connected with a first end of the output shaft, with the first end facing the coupling; two ends of the elastic object are pressed against the fixed seat and the connecting rod respectively; and the looseness preventing member is connected between the connecting rod and the coupling in an inclined manner. The elastic shaft device solves the problems that a double-spline output shaft with a bearing forms over-constrained location easily, causes damage of the bearing easily and further influences reliability of operation of a whole gas turbine, and thus further enables the connecting piece to play a role of axial spacing for the output shaft and improves reliability of the operation of the whole gas turbine.
Description
Technical field
The utility model relates to the power transmission field, especially, relates to a kind of elastic axis device that connects gas turbine and generator.
Background technique
In the present existing technology, see Fig. 1, the output shaft 3 of gas turbine 1 is supported on the gas turbine 1 with bearing 33 through first spline 31 when not connecting the generator (not shown).
When gas turbine 1 was connected with generator, output shaft 3 was connected with shaft coupling 5 through second spline 35, shaft coupling 5 and then be connected with generator.Second spline 35 at shaft coupling 5 places has also become another strong point of output shaft 3.Like this, output shaft 3 is by first spline 31, bearing 33 and second spline, 35 together support.
Yet; The output shaft 3 of first spline 31, bearing 33 and second spline, 35 together support formed the location easily, and when gas turbine 1 operation, bearing 33 will receive a very big unbalance loading; Very easily damage bearing 33, and then influence whole gas turbine 1 reliability of operation.
The model utility content
The utility model purpose is to provide a kind of elastic axis device, forms the location easily to solve output shaft, and bearing very easily damages, and then influences the technology of dependability problem of whole gas turbine operation.
For realizing above-mentioned purpose; An aspect according to the utility model provides a kind of elastic axis device, comprises output shaft, reaches the shaft coupling that is connected with output shaft through spline; The elastic axis device also comprises a connection piece, and link comprises fixed base, elasticity, connecting rod and anti-release member; Fixed base is fixedly installed in the axis hole of shaft coupling; Connecting rod is equipped with elasticity, and connecting rod passes fixed base, and then connects first end towards shaft coupling of output shaft; The two ends of elasticity are respectively against fixed base and connecting rod; Anti-release member is connected between connecting rod and the shaft coupling obliquely.
Further, first end of output shaft is provided with a blind hole that has internal thread along the axis extension; Connecting rod comprises a screw rod; Screw rod is connected in the blind hole of output shaft through the mode that is threaded.
Further, connecting rod also include one be connected in screw rod the connection head; The two ends of anti-release member connect the madial wall of head and shaft coupling respectively.
Further, comprise internal spline section that cooperates with output shaft and the internal thread segment that is positioned at internal spline in the axis hole of shaft coupling towards an end of generator; Fixed base is anti-tooth nut; Fixed base is threadedly connected in the axis hole; The thread rotary orientation of fixed base and the direction of rotation of output shaft.
Further, fixed base is provided with first through hole; Screw rod is nested with elasticity, and screw rod passes first through hole, and is connected with the blind hole of output shaft; The two ends of elasticity are respectively against fixed base and connection head.
Further, fixed base is provided with first annular groove; Connect head and be provided with second annular groove; The two ends of elasticity are placed in respectively in first annular groove and second annular groove.
Further, link also comprises a locking bed; The internal thread segment that comprises the internal spline section that cooperates with output shaft in the axis hole of shaft coupling and be positioned at internal spline towards an end of generator; Fixed base and locking bed all are threadedly connected to the internal thread segment of the axis hole of shaft coupling; Locking bed is away from first end, and locking bed is against fixed base; The thread rotary orientation of fixed base and locking bed is identical with the sense of rotation of output shaft.
Further, fixed base is provided with first through hole; Locking bed is provided with second through hole; Screw rod is nested with elasticity, and elasticity is passed second through hole successively, reached first through hole with screw rod, and is connected with the blind hole of output shaft; The two ends of elasticity are respectively against fixed base and connection head.
Further, fixed base is provided with first annular groove; Connect head and be provided with second annular groove; The two ends of elasticity are placed in respectively in first annular groove and second annular groove.
Further, elasticity is spring or spring sheet or inflates bellows.
The utlity model has following beneficial effect:
Adopt the elastic axis device of the utility model, link wherein can reach the work of axial limiting in order to guarantee the proper functioning of output shaft spline to output shaft, simultaneously, can improve the reliability of whole gas turbine operation.
Except top described purpose, feature and advantage, the utility model also has other purpose, feature and advantage.To do further detailed explanation to the utility model with reference to figure below.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide the further understanding to the utility model, and illustrative examples of the utility model and explanation thereof are used to explain the utility model, do not constitute the improper qualification to the utility model.In the accompanying drawings:
Fig. 1 is the prior art constructions schematic representation;
Fig. 2 is the structural representation of the elastic axis device of the utility model preferred embodiment one;
Fig. 3 is the partial enlarged drawing of a-quadrant among Fig. 2; And
Fig. 4 is the structural representation of the elastic axis device of the utility model preferred embodiment two.
Embodiment
Embodiment to the utility model is elaborated below in conjunction with accompanying drawing, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
Embodiment one
Referring to Fig. 2, the elastic axis device of the utility model comprises output shaft 3, reaches the shaft coupling 5 that is connected with output shaft 3 through spline 35, and output shaft 3 can slide with shaft coupling 5 to axial.Shaft coupling 5 and then link to each other with the input shaft of generator.
The elastic axis device also comprises a connection piece, and link comprises fixed base 71, elasticity 75, connecting rod 79 and anti-release member 77.Fixed base 71 is fixedly installed in the axis hole 51 of shaft coupling 5.
Connecting rod 79 is equipped with elasticity 75, and connecting rod 79 passes fixed base 71, and then connects first end 37 towards shaft coupling 5 of output shaft 3.The two ends of elasticity 75 are respectively against fixed base 75 and connecting rod 79.Anti-release member 77 is connected between connecting rod 79 and the shaft coupling 5 obliquely.
In conjunction with referring to Fig. 3, fixed base 71 is provided with first through hole 711.This fixed base 71 is discoid, and it radially is fixedly installed in the axis hole 51 of shaft coupling 5, and first end 37 of these fixed base 71 contiguous output shafts 3.The end wall of first end 37 of output shaft 3 is provided with a blind hole, and the madial wall of this blind hole is provided with screw thread.Be provided with first annular groove 713 at this fixed base 71 away from the end wall of first end 37 of output shaft 3 around first through hole 711.
Link also comprises a locking bed 73.Locking bed 73 is provided with second through hole 731.This locking bed 73 also is discoid, and it radially is fixedly installed in the axis hole 51 of shaft coupling 5.Locking bed 73 has the end wall of first annular groove 713 against fixed base 71.First through hole, 711 coaxial the communicating of second through hole 731 of locking bed 73 and fixed base 71.
The modes that fixed base 71 and locking bed 73 are fixedly installed in the axis hole 51 of shaft coupling 5 are: the internal thread segment towards an end of generator that comprises the internal spline section that cooperates with output shaft 3 in the axis hole 51 of shaft coupling 5 and be positioned at internal spline.Locking bed 73 and fixed base 71 are threadedly connected to successively the internal thread segment of the axis hole 51 of shaft coupling 5.Locking bed 73 is away from first end 37 of output shaft 3, and locking bed 73 is against fixed base 71.Fixed base 71 is provided with the end wall of first annular groove 713 against locking bed 73.The thread rotary orientation of fixed base 71 and locking bed 73 and the internal thread segment of axis hole 51 is identical with the sense of rotation of output shaft 3, and locking bed 73 reaches the purpose that prevents that fixed base 71 is loosening, and then provides safeguard with being fixedly connected of output shaft 3 for screw rod 791.
Connecting rod 79 comprises the connection head 793 of a screw rod 791 and connecting screw rod 791.Screw rod 791 penetrates second through hole 731 of locking bed 73 and first through hole 711 of fixed base 71 successively, and then is connected in the blind hole of first end 37 of output shaft 3 through the mode that is threaded.The diameter of first through hole 711 and second through hole 731 is greater than the diameter of screw rod 791.The diameter of second through hole 731 is greater than the diameter of first through hole 711.
The end wall that connection head 793 is connected in screw rod 791 is provided with second annular groove 795 around screw rod 791.This second annular groove 795 is coaxial relative with first annular groove 713 of fixed base 71.The two ends that are placed on the elasticity 75 of screw rod 791 are placed in first annular groove 713 of fixed base 71 and second annular groove 795 of connection head 793 respectively.
In the process of elastic axis device operation, loosening for the screw rod 791 that prevents connecting rod 79, will connect the madial wall that head 793 is fixedly connected on shaft coupling 5 through an anti-release member 77.The material of anti-release member 77 can be metal material.
The elastic axis device embodiment's one of the utility model concrete installation process is: output shaft 3 is connected with shaft coupling 5 through spline 35.Fixed base 71 is installed in the axis hole 51 of shaft coupling 5 through the mode that is threaded with locking bed 73, and locking bed 73 is resisted against fixed base 71.The connecting rod 79 that is equipped with elasticity 75 passes second through hole 731 of locking bed 73 and first through hole 711 of fixed base 71 successively, is screwed in the blind hole of output shaft 3 again.At this moment, the two ends of elasticity 75 are placed in first annular groove 713 of fixed base 71 respectively and connect in second annular groove 795 of head 793.The connection head 793 of connecting rod 79 is fixedly connected on the madial wall of shaft coupling 5 through anti-release member 77.
Embodiment two
See also Fig. 4, in present embodiment two, fixed base 71 is anti-tooth nut, and is provided with first through hole 711.The thread rotary orientation of anti-tooth nut and output shaft 3 direction of rotation.With fixed base 71 and the locking bed 73 in the anti-tooth nut alternate embodiment one, anti-tooth nut role is the same with fixed base 71 and locking bed 73 roles.
The elastic axis device embodiment's two of the utility model concrete installation process is: output shaft 3 is connected with shaft coupling 5 through spline 35.Fixed base 71 is installed in the axis hole 51 of shaft coupling 5 through the mode that is threaded.The connecting rod 79 that is equipped with elasticity 75 passes first through hole 711 of fixed base 71, is screwed in the blind hole of output shaft 3 again.At this moment, the two ends of elasticity 75 are placed in first annular groove 713 of fixed base 71 respectively and connect in second annular groove 795 of head 793.The connection head 793 of connecting rod 79 is fixedly connected on the madial wall of shaft coupling 5 through anti-release member 77.
In the foregoing description of the utility model, elasticity 75 is that spring or spring sheet are perhaps inflated rubber-like objects such as bellows.
Because output shaft 3 can slide with shaft coupling 5 to axial; When output shaft 3 and generator operation; Elastic force effect through elasticity 75 pushes away fixed base 71 with connecting rod 79; Thereby through connecting rod 79 output shaft 3 is pulled to shaft coupling 5, guaranteed that the spline 35 on the output shaft 3 obtains enough lengths of action, and then prevented the hidden danger that spline 35 lost efficacy.
When output shaft and generator shut down, the pulling force in the vertical direction component that anti-release member 77 is suffered provided the active force of radial location for output shaft 3.
The output shaft 3 of the elastic axis device of the utility model is close to the support that first ends, 37 places have reduced bearing 33, has avoided the location excessively of output shaft 3 in the original structure.
More than be merely the preferred embodiment of the utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (10)
1. an elastic axis device comprises output shaft (3), reaches the shaft coupling (5) that is connected with said output shaft (3) through spline (35), it is characterized in that,
Said elastic axis device also comprises a connection piece, and said link comprises fixed base (71), elasticity (75), connecting rod (79) and anti-release member (77);
Said fixed base (71) is fixedly installed in the axis hole (51) of said shaft coupling (5);
Said connecting rod (79) is equipped with said elasticity (75), and said connecting rod (79) passes said fixed base (71), and then connects first end (37) towards said shaft coupling (5) of said output shaft (3);
The two ends of said elasticity (75) are respectively against said fixed base (75) and said connecting rod (79);
Said anti-release member (77) is connected between said connecting rod (79) and the said shaft coupling (5) obliquely.
2. elastic axis device according to claim 1 is characterized in that,
Said first end (37) of said output shaft (3) is provided with a blind hole that has internal thread along the axis extension;
Said connecting rod (79) comprises a screw rod (791);
Said screw rod (791) is connected in the said blind hole of said output shaft (3) through the mode that is threaded.
3. elastic axis device according to claim 2 is characterized in that,
Said connecting rod (79) also include one be connected in said screw rod (791) connection head (793);
The two ends of said anti-release member (77) connect the madial wall of said connection head (793) and said shaft coupling (5) respectively.
4. elastic axis device according to claim 3 is characterized in that,
The internal thread segment that comprises the internal spline section that cooperates with said output shaft (3) in the said axis hole (51) of said shaft coupling (5) and be positioned at said internal spline towards an end of generator;
Said fixed base (71) is anti-tooth nut;
Said fixed base (71) is threadedly connected in the said axis hole (51);
The direction of rotation of the thread rotary orientation of said fixed base (71) and said output shaft (3).
5. elastic axis device according to claim 4 is characterized in that,
Said fixed base (71) is provided with first through hole (711);
Said screw rod (791) is nested with said elasticity (75), and said screw rod (791) passes said first through hole (711), and is connected with the said blind hole of said output shaft (3);
The two ends of said elasticity (75) are respectively against said fixed base (71) and said connection head (793).
6. elastic axis device according to claim 5 is characterized in that,
Said fixed base (71) is provided with first annular groove (713);
Said connection head (793) is provided with second annular groove (795);
The two ends of said elasticity (75) are placed in respectively in said first annular groove (713) and said second annular groove (795).
7. elastic axis device according to claim 3 is characterized in that,
Said link also comprises a locking bed (73);
The internal thread segment that comprises the internal spline section that cooperates with said output shaft (3) in the said axis hole (51) of said shaft coupling (5) and be positioned at said internal spline towards an end of generator;
Said fixed base (71) and said locking bed (73) all are threadedly connected to the said internal thread segment of the said axis hole (51) of said shaft coupling (5);
Said locking bed (73) is away from said first end (37), and said locking bed (73) is against said fixed base (71);
The thread rotary orientation of said fixed base (71) and said locking bed (73) is identical with the sense of rotation of said output shaft (3).
8. elastic axis device according to claim 7 is characterized in that,
Said fixed base (71) is provided with first through hole (711);
Said locking bed (73) is provided with second through hole (731);
Said screw rod (791) is nested with said elasticity (75), and said elasticity (75) is passed said second through hole (731) successively, reached first through hole (711) with said screw rod (791), and is connected with the said blind hole of said output shaft (3);
The two ends of said elasticity (75) are respectively against said fixed base (71) and said connection head (793).
9. elastic axis device according to claim 8 is characterized in that,
Said fixed base (71) is provided with first annular groove (713);
Said connection head (793) is provided with second annular groove (795);
The two ends of said elasticity (75) are placed in respectively in said first annular groove (713) and said second annular groove (795).
10. according to claim 6 or 9 described elastic axis devices, it is characterized in that,
Said elasticity (75) is for spring or spring sheet or inflate bellows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202926124U CN202220806U (en) | 2011-08-11 | 2011-08-11 | Elastic shaft device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202926124U CN202220806U (en) | 2011-08-11 | 2011-08-11 | Elastic shaft device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202220806U true CN202220806U (en) | 2012-05-16 |
Family
ID=46042833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202926124U Expired - Fee Related CN202220806U (en) | 2011-08-11 | 2011-08-11 | Elastic shaft device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202220806U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047728A (en) * | 2014-06-20 | 2014-09-17 | 中国南方航空工业(集团)有限公司 | Power shaft locking assembly and turboshaft aero-engine comprising same |
| CN111946403A (en) * | 2020-07-31 | 2020-11-17 | 中国航发贵阳发动机设计研究所 | Coupling for connecting aviation rotors |
-
2011
- 2011-08-11 CN CN2011202926124U patent/CN202220806U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047728A (en) * | 2014-06-20 | 2014-09-17 | 中国南方航空工业(集团)有限公司 | Power shaft locking assembly and turboshaft aero-engine comprising same |
| CN104047728B (en) * | 2014-06-20 | 2016-06-15 | 中国南方航空工业(集团)有限公司 | Power shaft stop assembly and there is its whirlpool axle aero-engine |
| CN111946403A (en) * | 2020-07-31 | 2020-11-17 | 中国航发贵阳发动机设计研究所 | Coupling for connecting aviation rotors |
| CN111946403B (en) * | 2020-07-31 | 2022-09-02 | 中国航发贵阳发动机设计研究所 | Coupling for connecting aviation rotors |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120516 Termination date: 20200811 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |