CN105485133B - For the stud connection structure and gas turbine of the connection of gas turbine casing - Google Patents
For the stud connection structure and gas turbine of the connection of gas turbine casing Download PDFInfo
- Publication number
- CN105485133B CN105485133B CN201510899856.1A CN201510899856A CN105485133B CN 105485133 B CN105485133 B CN 105485133B CN 201510899856 A CN201510899856 A CN 201510899856A CN 105485133 B CN105485133 B CN 105485133B
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- Prior art keywords
- sawtooth
- casing
- ring
- stud
- rotation
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- 239000000463 material Substances 0.000 claims description 6
- 230000009467 reduction Effects 0.000 abstract description 7
- 238000009434 installation Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
Abstract
The invention discloses a kind of stud connection structures and gas turbine for the connection of gas turbine casing.For the stud connection structure of gas turbine casing connection, including being opened on casing for the casing threaded hole of assembling and for being assemblied in the stud connector that casing connection is carried out in casing threaded hole, the middle part of stud connector is equipped with the anti-rotation broached-tooth design that stud connector is prevented circumferentially to rotate, and is equipped between anti-rotation broached-tooth design and casing threaded hole and matches and be used for the zigzag bushing that stud connector is prevented to relatively rotate with casing with the wall surface of counterbore in the anti-rotation sawtooth of anti-rotation broached-tooth design and casing threaded hole simultaneously.Increase anti-rotation broached-tooth design on stud connector to prevent connection structure from loosening, the Screw Pile interference end degree of freedom of stud connector is made to be limited completely；It is connected suitable for the structure between the power turbine casing and reduction case of gas turbine, is also applied for the structure connection of similar structures.
Description
Technical field
The present invention relates to ground gas turbine connection structure technical fields, particularly, are related to a kind of for gas turbine machine
The stud connection structure of casket connection.It is moreover, it relates to a kind of including the above-mentioned stud for the connection of gas turbine casing
The gas turbine of connection structure.
Background technology
Between the power turbine casing and reduction case of gas turbine interference is utilized frequently with stud connection mode, stud
It is threaded into the reduction case that material is cast aluminium.When gas turbine be used for packaged type vehicle when, each casing of gas turbine it
Between interaction force become complicated so that bear larger axial impact loading, radial direction in the stud interference end for being screwed into casing body
The complex loads such as alternating load, the stud commonly installed is in use for some time, it may appear that the feelings that stud rotation is loosened, dropped
Condition.This is because casing body material is surrendered in the environment of big stress impact load so that screw-down torque reduction cannot generate foot
Caused by enough frictional force.
Since installation side width dimensions and installation space are narrow and small, it is difficult to use effective anti-loose structure.Existing method is
Strengthen extending the time of stud failure with reference to power using screw thread fastening glue when stud is screwed into, but cannot effectively solve this and ask
Topic loosens situation, it is necessary to inspect periodically stud.
The content of the invention
It is existing to solve the present invention provides a kind of stud connection structure and gas turbine for the connection of gas turbine casing
There is the stud installed on the narrow and small installation side of gas turbine magnesium alloy casing, easily loosened under the big stress of complex load
The technical issues of.
According to an aspect of the present invention, a kind of stud connection structure for the connection of gas turbine casing is provided, including
It is opened on casing for the casing threaded hole of assembling and for being assemblied in the stud that casing connection is carried out in casing threaded hole
Connector, the middle part of stud connector are equipped with the anti-rotation broached-tooth design that stud connector is prevented circumferentially to rotate, anti-rotation saw
The wall with counterbore in the anti-rotation sawtooth of anti-rotation broached-tooth design and casing threaded hole simultaneously is equipped between toothing and casing threaded hole
The zigzag bushing that face matches and is used to preventing stud connector to relatively rotate with casing.
Further, zigzag bushing is loop configuration；Zigzag bushing is included in the ring outside wall surface of loop configuration
The outer sawtooth of ring and the sawtooth in the ring on the ring internal face of loop configuration, the counterbore of ring outer sawtooth and casing threaded hole nibble
It closes, the anti-rotation engagement of sawtooth and anti-rotation broached-tooth design in ring.
Further, ring it is outer between sawtooth and screw thread using sawtooth and anti-rotation sawtooth in interference fit connection and/or ring it
Between be gap-matched connection.
Further, the outer sawtooth of ring, in ring the tooth of sawtooth and anti-rotation sawtooth towards along the radial arrangement of stud connector.
Further, the outer sawtooth of ring, in ring the tooth of sawtooth and anti-rotation sawtooth towards along the circumferentially skewed of stud connector；
The tooth direction of two in the outer sawtooth of ring, ring in sawtooth and anti-rotation sawtooth is different or the outer sawtooth of ring, ring in sawtooth and anti-
The tooth direction for turning sawtooth three is identical and tightening direction with screw thread is in the same direction.
Further, the outer sawtooth of ring includes stretch into the first end of casing threaded hole and contacted with the external world second
End, the first end of the outer sawtooth of ring are provided for sharp sword of the wall body material of cutting casing zigzag bushing to be installed in place.
Further, anti-rotation broached-tooth design is in the polished rod of stud connector side wall surface.
Further, anti-rotation broached-tooth design along stud connector shaft to length for 5mm-15mm, anti-rotation broached-tooth design
The sawtooth number of teeth is 20-40, profile angle is 90 ° -110 ° and reference circle is 8mm-15mm.
Further, the number of teeth of sawtooth is 20-40 in the ring of zigzag bushing, profile angle is 90 ° -110 ° and reference circle
For 8mm-15mm；The number of teeth of the outer sawtooth of the ring of zigzag bushing is 20-40, profile angle is 95 ° -120 ° and reference circle is
12mm-20mm；The counterbore of a diameter of 12mm-18mm and depth for 8mm-12mm is equipped in casing threaded hole.
According to another aspect of the present invention, a kind of gas turbine is additionally provided, gas turbine casing is used for including above-mentioned
The stud connection structure of connection.
The invention has the advantages that：
The present invention increases anti-rotation sawtooth knot for the stud connection structure of gas turbine casing connection on stud connector
Structure makes the Screw Pile interference end degree of freedom of stud connector be limited completely to prevent connection structure from loosening；Casing threaded hole with
Zigzag bushing is added between stud connector, the diameter dimension of increased zigzag bushing can set to obtain very little, to ensure
It is applied on the casing installation side of relatively narrow width (2.5 times of major diameter of threads)；The counterbore of casing threaded hole is cylinder so that is added
Anti-rotation broached-tooth design and zigzag bushing be easily worked；Increased by the regular length at the stud interference end for making stud connector
Add, so that the power for forming the branch counter moment of the stud connector of bearing load is smaller, add what casing at interference thread was surrendered
Safety margin.It connects, is also applied for similar suitable for the structure between the power turbine casing and reduction case of gas turbine
The structure connection of structure.
In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages.
Below with reference to figure, the present invention is described in further detail.
Description of the drawings
The attached drawing for forming the part of the application is used for providing a further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is the structural representation of the stud connection structure for the connection of gas turbine casing of the preferred embodiment of the present invention
Figure；
Fig. 2 is the structure diagram of the stud connector of the preferred embodiment of the present invention；
Fig. 3 is the A-A sectional views of Fig. 2；
Fig. 4 is the structure diagram of the zigzag bushing of the preferred embodiment of the present invention；
Fig. 5 is the overlooking the structure diagram of the zigzag bushing of the preferred embodiment of the present invention.
Marginal data：
1st, casing；2nd, casing threaded hole；3rd, stud connector；4th, anti-rotation broached-tooth design；401st, anti-rotation sawtooth；5th, zigzag
Bushing；501st, the outer sawtooth of ring；502nd, sawtooth in ring；6th, sharp sword；7th, polished rod；8th, counterbore.
Specific embodiment
The embodiment of the present invention is described in detail below in conjunction with attached drawing, but the present invention can be limited by following and
The multitude of different ways of covering is implemented.
Fig. 1 is the structural representation of the stud connection structure for the connection of gas turbine casing of the preferred embodiment of the present invention
Figure；Fig. 2 is the structure diagram of the stud connector of the preferred embodiment of the present invention；Fig. 3 is the A-A sectional views of Fig. 2；Fig. 4 is this
The structure diagram of the zigzag bushing of invention preferred embodiment；Fig. 5 is bowing for the zigzag bushing of the preferred embodiment of the present invention
Depending on structure diagram.
As shown in Figure 1, the stud connection structure for the connection of gas turbine casing of the present embodiment, including being opened in casing
For the casing threaded hole 2 of assembling and for being assemblied in the stud connector that casing 1 is carried out in casing threaded hole 2 and is connected on 1
3, the middle part of stud connector 3 is equipped with the anti-rotation broached-tooth design 4 that stud connector 3 is prevented circumferentially to rotate, anti-rotation sawtooth
Between structure 4 and casing threaded hole 2 be equipped with simultaneously with counterbore in the anti-rotation sawtooth 401 of anti-rotation broached-tooth design 4 and casing threaded hole 2
The zigzag bushing 5 that 8 wall surface matches and is used to preventing stud connector 3 to relatively rotate with casing 1.The present invention is used for
The stud connection structure of gas turbine casing connection increases anti-rotation broached-tooth design to prevent that connection structure is loose on stud connector
It is dynamic, the Screw Pile interference end degree of freedom of stud connector is made to be limited completely；It is added between casing threaded hole and stud connector
Zigzag bushing, the diameter dimension of increased zigzag bushing can set to obtain very little, to ensure in relatively narrow width (2.5 times of spiral shells
Line outer diameter) casing installation side on apply；The counterbore of casing threaded hole is cylinder so that the anti-rotation broached-tooth design and saw added
Tooth form bushing is easily worked；Increased by the regular length at the stud interference end for making stud connector, so as to form branch carrying
The power of the branch counter moment of the stud connector of lotus is smaller, adds the safety margin that casing is surrendered at interference thread.Suitable for combustion
Structure connection between the power turbine casing and reduction case of gas-turbine is also applied for the structure connection of similar structures.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, in the present embodiment, zigzag bushing 5 is loop configuration.Zigzag serves as a contrast
Set 5 includes the outer sawtooth 501 of ring in the ring outside wall surface of loop configuration and the ring on the ring internal face of loop configuration
Interior sawtooth 502.The outer sawtooth 501 of ring is engaged with the counterbore 8 of casing threaded hole 2.Sawtooth 502 and anti-rotation broached-tooth design 4 is anti-in ring
Turn sawtooth 401 to engage.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, in the present embodiment, ring is outer to be matched somebody with somebody between sawtooth 501 and screw thread using interference
It closes in connection and/or ring and connection is gap-matched between sawtooth 502 and anti-rotation sawtooth 401.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, in the present embodiment, sawtooth 502 and anti-rotation saw in the outer sawtooth 501 of ring, ring
The tooth of tooth 401 is towards along the radial arrangement of stud connector 3.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, in the present embodiment, sawtooth 502 and anti-rotation saw in the outer sawtooth 501 of ring, ring
The tooth of tooth 401 is towards along the circumferentially skewed of stud connector 3.So that the Complicated Loads that stud connector is subject to directly act on
On the sawtooth of deflection, so as to form the conflict power to torque, so as to prevent the torsion of stud connector.Optionally, the outer sawtooth of ring
501st, the tooth direction of 401 three of sawtooth 502 and anti-rotation sawtooth is identical in ring and tightening direction with screw thread is in the same direction.So that
The Complicated Loads that stud connector is subject to are directly acted on the sawtooth skew wall of deflection, so as to form the conflict power to torque, from
And prevent the torsion of stud connector.Optionally, the outer sawtooth 501 of ring, two in ring in sawtooth 502 and anti-rotation sawtooth 401
Tooth direction is different.By making the direction of sawtooth and Complicated Loads that stud connector is subject to positioned opposite, so as to be formed pair
The counteracting of load.
As shown in Figure 4 and Figure 5, in the present embodiment, the outer sawtooth 501 of ring includes stretching into the first end of casing threaded hole 2
And the second end contacted with the external world.The first end of the outer sawtooth 501 of ring is provided for the wall body material of cutting casing 1 will saw
The sharp sword 6 that tooth form bushing 5 is installed in place.
As shown in Figure 1, Figure 2 and Figure 3, in the present embodiment, anti-rotation broached-tooth design 4 is in the light of 3 side wall surface of stud connector
In bar 7.
As shown in Figure 1, Figure 2 and Figure 3, in the present embodiment, anti-rotation broached-tooth design 4 is along the axial length of stud connector 3
5mm-15mm, the sawtooth number of teeth of anti-rotation broached-tooth design 4 is 20-40, profile angle N is 90 ° -110 ° and reference circle is 8mm-
15mm。
As shown in Figure 1, Figure 4 and Figure 5, in the present embodiment, in the ring of zigzag bushing 5 number of teeth of sawtooth 502 for 20-40,
Profile angle N1It is 8mm-15mm for 90 ° -110 ° and reference circle；The number of teeth of the outer sawtooth 501 of the ring of zigzag bushing 5 is 20-40,
Profile angle N1It is 12mm-20mm for 95 ° -120 ° and reference circle；Be equipped in casing threaded hole 2 a diameter of 12mm-18mm and
Depth is for 8mm-12mm and for the counterbore 8 of socket joint anti-rotation broached-tooth design 4.
The gas turbine of the present embodiment, including the above-mentioned stud connection structure for the connection of gas turbine casing.
During implementation, a kind of stud connection structure for the connection of gas turbine casing is provided, at the middle part of stud connector 3
One circle anti-rotation broached-tooth design 4 is set.When stud connector 3 is screwed into casing threaded hole 2, anti-rotation broached-tooth design 4 is made to be in casing
Among counterbore 8 at threaded hole 2.Then, by a zigzag bushing 5 be pressed into anti-rotation broached-tooth design 4 and casing threaded hole 2 it
Between, make entire zigzag bushing 5 flushed with the screw thread mounting plane of casing threaded hole 2 or in casing threaded hole 2 screw thread peace
It fills below plane.5 inside and outside anchor ring of zigzag bushing is zigzag, the interior sawtooth of zigzag bushing 5 on stud connector 3
Sawtooth be engaged, the outer sawtooth interference of zigzag bushing 5 is squeezed into the counterbore 8 of containing broached-tooth design of casing threaded hole 2.Outside
Sharp sword 6 is designed at sawtooth, for cutting 1 material of casing, convenient for zigzag bushing 5 is installed in place.Zigzag serves as a contrast during assembling
The first cutting with the outer sawtooth of the stud jigsaw fit of stud connector 3 guiding zigzag bushing 5 of the interior sawtooth of set 5.
Because the cooperation of sawtooth inside and outside zigzag bushing 5 prevents stud connector 3 from rotating in a circumferential direction, and interference thread limits in itself
Its axial movement is made, so as to fulfill the locking purpose of stud.
Increase zigzag anti-loose structure on stud, Screw Pile interference end degree of freedom is made to be limited completely；Increased lining
It is small to cover size diameter size, it is ensured that applied on the casing installation side of relatively narrow width (2.5 times of major diameter of threads)；On casing body
Holding hole be easily worked for circle；The regular length at stud interference end increased, and make to form the stud of bearing load branch instead
The power of torque is smaller, adds the safety margin that casing is surrendered at interference thread.
The present invention devises the present invention using Mr. Yu's type surface car gas turbine on the installation side of reduction case
For the stud connection structure of gas turbine casing connection.Specific implementation is as follows：
1st, the middle part of stud connector 3 design a length 10mm, the number of teeth 30,97 ° of profile angle, reference circle 11.5mm's
Sawtooth.
2nd, a zigzag bushing 5 is designed, interior sawtooth is the number of teeth 30,97 ° of profile angle, the sawtooth of reference circle 11.5mm, outside
Sawtooth is the number of teeth 30,100 ° of profile angle, the sawtooth of reference circle 14.6mm, and outer sawtooth is with cutting wedge angle.
3rd, Φ diameters 14.3mm, the counterbore 8 of depth 10mm are increased on the interference thread hole (casing threaded hole 2) of casing 1.
4th, after tightening screw thread during assembling installation, zigzag bushing 5 by the stud sawtooth of stud connector 3 is guided, is squeezed into
In the counterbore 8 of casing 1, stud connector 3 is made to fasten completely.
The present invention is had been applied on certain type ground gas turbine, have passed through the experiment of 600 hours, it was demonstrated that the operation is stable
Effectively.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of stud connection structure for the connection of gas turbine casing, including being opened on casing (1) for the machine of assembling
Casket threaded hole (2) and the stud connector for being assemblied in casing (1) connection of progress in the casing threaded hole (2)
(3),
The middle part of the stud connector (3) is equipped with to prevent the anti-rotation sawtooth that the stud connector (3) circumferentially rotates
Structure (4),
Equipped with while with the anti-rotation broached-tooth design (4) between the anti-rotation broached-tooth design (4) and the casing threaded hole (2)
The wall surface of counterbore (8) matches and is used to prevent the stud connector in anti-rotation sawtooth (401) and the casing threaded hole (2)
(3) the zigzag bushing (5) to relatively rotate with the casing (1)；
It is characterized in that,
The zigzag bushing (5) is loop configuration；The zigzag bushing (5) is included in the ring outside wall surface of loop configuration
The outer sawtooth (501) of ring and the sawtooth (502) in the ring on the ring internal face of the loop configuration, the outer sawtooth of the ring
(501) counterbore (8) with the casing threaded hole (2) engages, sawtooth (502) and the anti-rotation broached-tooth design in the ring
(4) the anti-rotation sawtooth (401) engagement；Sawtooth (502) and the anti-rotation sawtooth in the outer sawtooth (501) of the ring, the ring
(401) tooth direction is along the circumferentially skewed of the stud connector (3), so that the Complicated Loads that stud connector is subject to are straight
It connects on the sawtooth for acting on deflection, so as to form the conflict power to torque, so as to prevent the torsion of stud connector；
When the stud connector (3) is screwed into casing threaded hole (2), the anti-rotation broached-tooth design (4) is made to be in casing
Among counterbore (8) at threaded hole (2)；Then, a zigzag bushing (5) is pressed into anti-rotation broached-tooth design (4) and casing spiral shell
Between pit (2), entire zigzag bushing (5) is made to be flushed with the screw thread mounting plane of casing threaded hole (2) or in casing spiral shell
Below the screw thread mounting plane of pit (2), by increasing the regular length at stud interference end of stud connector, so as to be formed
The power of the branch counter moment of the stud connector of bearing load is smaller, adds the safety margin that casing is surrendered at interference thread；Saw
The inner ring surface and outer ring surface of tooth form bushing (5) are zigzag, and sawtooth (502) is connected with stud in the ring of zigzag bushing (5)
Sawtooth on part (3) is engaged, and the containing saw of casing threaded hole (2) is squeezed into outer sawtooth (501) interference of ring of zigzag bushing (5)
In the counterbore (8) of toothing；Sawtooth (502) is first sawed with the anti-rotation of stud connector (3) in the ring of zigzag bushing (5) during assembling
The cutting of the outer sawtooth (501) of the ring of tooth (401) cooperation guiding zigzag bushing (5).
2. the stud connection structure according to claim 1 for the connection of gas turbine casing, which is characterized in that
The ring is outer connected between sawtooth (501) and the screw thread using interference fit and/or
It is gap-matched and is connected between sawtooth (502) and the anti-rotation sawtooth (401) in the ring.
3. the stud connection structure according to claim 1 for the connection of gas turbine casing, which is characterized in that
The tooth of sawtooth (502) and the anti-rotation sawtooth (401) is towards along the spiral shell in the outer sawtooth (501) of the ring, the ring
The radial arrangement of stake connector (3).
4. the stud connection structure according to claim 1 for the connection of gas turbine casing, which is characterized in that
The tooth direction side of two in the outer sawtooth (501) of the ring, the ring in sawtooth (502) and the anti-rotation sawtooth (401)
To different or
The tooth direction phase of sawtooth (502) and the anti-rotation sawtooth (401) three in the outer sawtooth (501) of the ring, the ring
It is same and in the same direction with the tightening direction of the screw thread.
5. the stud connection structure according to claim 1 for the connection of gas turbine casing, which is characterized in that
The outer sawtooth (501) of the ring include stretching into the first end of the casing threaded hole (2) and contact with the external world the
Two ends,
The first end of the outer sawtooth (501) of the ring is provided for cutting the wall body material of the casing (1) with by the sawtooth
The sharp sword (6) that shape bushing (5) is installed in place.
6. the stud connection structure according to any one of claim 1 to 5 for the connection of gas turbine casing, feature
It is,
The anti-rotation broached-tooth design (4) is in the polished rod (7) of stud connector (3) side wall surface.
7. the stud connection structure according to any one of claim 1 to 5 for the connection of gas turbine casing, feature
It is,
The anti-rotation broached-tooth design (4) is 5mm-15mm along the length of stud connector (3) axial direction,
The sawtooth number of teeth of the anti-rotation broached-tooth design (4) is 20-40, profile angle is 90 ° -110 ° and reference circle is 8mm-
15mm。
8. the stud connection structure according to any one of claim 1 to 5 for the connection of gas turbine casing, feature
It is,
The number of teeth of sawtooth (502) is 20-40 in the ring of the zigzag bushing (5), profile angle is 90 ° -110 ° and is divided
Degree circle is 8mm-15mm；
The number of teeth of the outer sawtooth (501) of the ring of the zigzag bushing (5) is 20-40, profile angle is 95 ° -120 ° and is divided
Degree circle is 12mm-20mm；
The counterbore (8) of a diameter of 12mm-18mm and depth for 8mm-12mm is equipped in the casing threaded hole (2).
9. a kind of gas turbine, which is characterized in that be used for gas turbine casing including described in any item of the claim 1 to 8
The stud connection structure of connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510899856.1A CN105485133B (en) | 2015-12-09 | 2015-12-09 | For the stud connection structure and gas turbine of the connection of gas turbine casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510899856.1A CN105485133B (en) | 2015-12-09 | 2015-12-09 | For the stud connection structure and gas turbine of the connection of gas turbine casing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105485133A CN105485133A (en) | 2016-04-13 |
| CN105485133B true CN105485133B (en) | 2018-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510899856.1A Active CN105485133B (en) | 2015-12-09 | 2015-12-09 | For the stud connection structure and gas turbine of the connection of gas turbine casing |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105840929B (en) * | 2016-06-22 | 2018-08-21 | 宜宾三江机械有限责任公司 | A kind of straight coupling of spline locking circumferential free degree |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB972814A (en) * | 1960-07-25 | 1964-10-14 | Rosan Eng Corp | Thin-walled inserts |
| CN101598167B (en) * | 2009-04-23 | 2013-06-12 | 贵州航天精工制造有限公司 | Method and connection structure for preventing stud from rotating on substrate |
| CN101614234A (en) * | 2009-08-17 | 2009-12-30 | 贵州航天精工制造有限公司 | A kind of method and sawtooth stop swivel nut that prevents that swivel nut rotates in the matrix screw |
| US10550876B2 (en) * | 2011-12-05 | 2020-02-04 | Acument Intellectual Properties, Llc | Fastener with attached compression limiting sleeve |
| CN204041687U (en) * | 2014-09-11 | 2014-12-24 | 贵州航太精密制造有限公司 | A kind of loose-resitant belt tooth stud |
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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. |