CN205096828U - Gas turbine rotor attachment bolt preloading device - Google Patents
Gas turbine rotor attachment bolt preloading device Download PDFInfo
- Publication number
- CN205096828U CN205096828U CN201520802381.5U CN201520802381U CN205096828U CN 205096828 U CN205096828 U CN 205096828U CN 201520802381 U CN201520802381 U CN 201520802381U CN 205096828 U CN205096828 U CN 205096828U
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- Prior art keywords
- attachment bolt
- gas turbine
- rotor attachment
- turbine rotor
- bolt
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Abstract
The utility model provides a gas turbine rotor attachment bolt preloading device, its includes the back taper bearing, piston cylinder of bearing top fixedly connected with, but piston cylinder top swivelling joint has adjusting nut, adjusting nut is connected with a tensile bolt, tensile bolt has cup jointed the movable sleeve that lives, the bearing lateral wall be provided with at least one be used for right the movable sleeve that lives carries out the opening operated. The utility model provides a gas turbine rotor attachment bolt preloading device, simple structure is convenient for make, does not have the shear force of turning round and a yawing force in the pretension process of antitrochanter attachment bolt, the also zero friction damage of contact surface of antitrochanter attachment bolt, consequently, in the assembly of gas turbine rotor attachment bolt, dismantle quality and precision that the hookup of rotor attachment bolt can be ensured to the in -process.
Description
Technical field
The utility model relates to mechanical field, particularly a kind of gas turbine rotor attachment bolt pre-tightening apparatus.
Background technology
In aero-engine assembling, extensively adopt tools for bolts ' pretension technology, in whirlpool axle, whirlpool oar and industrial gas turbine engine, dish axle connects and between rotor at different levels, the center bolt applying pretightning force that adopts connects more.In engine working process, due to the effect of centrifugal force, gas force, thermal force and maneuver load, there is the phenomenon of axial shrinkage and elongation in rotor.Therefore, in order to ensure the work that high speed rotor is safe and reliable, during assembling, axial pre tightening force must be applied to attachment bolt, and the size of axial pre tightening force must be suitable.Pretightning force is too little, and when bolt bears larger axis to load, the clamping force of connected compcnent is too little, and rotor can not normally connect and operate; Pretightning force is excessive, and bolt bears larger axial load, thus reduces the safety stock of bolt.Therefore, the functional reliability of bolt-connection rotor be ensured, must the accurate pretightning force of rotor attachment bolt be given.
Fig. 1 is a kind of syndeton schematic diagram of gas turbine rotor attachment bolt, shown in Figure 1, rotor attachment bolt 1 is fixed on bearing block 3 by coupling nut 2, for output coupling 4, compressor rotor (not shown) and turbine rotor (not shown) being linked together.In order to ensure the safe and reliable of gas turbine rotor work, during assembling, accurate axial pre tightening force must be applied to rotor attachment bolt, the frictionally damage occurring thread connection contact surface will be avoided simultaneously.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of gas turbine rotor attachment bolt pre-tightening apparatus, to reduce or to avoid problem noted earlier.
For solving the problems of the technologies described above, the utility model proposes a kind of gas turbine rotor attachment bolt pre-tightening apparatus, it comprises back taper supporting base, described supporting base top is fixedly connected with a piston cylinder, described piston cylinder top has been rotatably connected adjusting nut, described adjusting nut is connected with a tensile bolt, and described tensile bolt is socketed with a quill, and described supporting base sidewall is provided with at least one opening for operating described quill.
Preferably, described piston cylinder is hydraulic piston-cylinder.
Preferably, described quill is provided with regular hexagonal section.
Preferably, described supporting base sidewall is evenly equipped with three described openings.
A kind of gas turbine rotor attachment bolt pre-tightening apparatus provided by the utility model, structure is simple, be convenient to manufacture, to the pretension process of rotor attachment bolt without torsional shear and side force, to the contact surface of rotor attachment bolt also without frictionally damage, therefore, the quality that rotor attachment bolt connects and precision can be guaranteed in the assembling, unloading process of gas turbine rotor attachment bolt.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the utility model and explain, does not limit scope of the present utility model.Wherein,
Fig. 1 is a kind of syndeton schematic diagram of gas turbine rotor attachment bolt;
Fig. 2 is the structural representation of a kind of gas turbine rotor attachment bolt pre-tightening apparatus according to a specific embodiment of the present utility model.
Detailed description of the invention
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and detailed description of the invention of the present utility model is described.Wherein, identical parts adopt identical label.
Fig. 2 is the structural representation of a kind of gas turbine rotor attachment bolt pre-tightening apparatus according to a specific embodiment of the present utility model, shown in Figure 2, the utility model provides a kind of gas turbine rotor attachment bolt pre-tightening apparatus, it comprises back taper supporting base 50, described supporting base 50 top is fixedly connected with a piston cylinder 51, described piston cylinder 51 top has been rotatably connected adjusting nut 52, described adjusting nut 52 is connected with a tensile bolt 53, described tensile bolt 53 is socketed with a quill 54, described supporting base 50 sidewall is provided with at least one opening 501 for operating described quill 54.
The operation principle of described gas turbine rotor attachment bolt pre-tightening apparatus is, described supporting base 50 is for being placed on described bearing block 3, on the one hand described piston cylinder 51 is supported, can contribute to positioning described tensile bolt 53 on the other hand, make described tensile bolt 53 impulse stroke consistent with the axis of described rotor attachment bolt 1, the dimensional requirement that described supporting base 50 adopts inverted cone-shaped structure can reduce described piston cylinder 51, thus less described piston cylinder 51 can be installed.
After described tensile bolt 53 being connected with described rotor attachment bolt 1 by described adjusting nut 52, rising described piston cylinder 51 and namely to stretch described rotor attachment bolt 1 by described tensile bolt 53, namely to described rotor attachment bolt 1 Shi Hanzhang.Described piston cylinder 51 can be pneumaticpiston cylinder, also can be hydraulic piston-cylinder, can regulate the stroke of described adjusting nut 52 so accurately, thus can apply accurate prestressing force to described rotor attachment bolt 1.
Described quill 54 is for applying to tighten and loosening operation to described coupling nut 2, described quill 54 can be provided with the cross section of regular hexagon or square, and existing torque spanner can be utilized like this to apply accurate screwing force by described quill 54 to described coupling nut 2.Described supporting base 50 sidewall is provided with at least one opening 501 for operating described quill 54, such as, described supporting base 50 sidewall can adjacent 120 degree uniform three described openings 501, and quill 54 described in the tool holdings such as torque spanner can be utilized so very easily to operate.
Certainly, in order to avoid causing damage to described bearing block 3 in described rotor attachment bolt 1 process of stretching, copper pad 55 also can be set between described supporting base 50 and described bearing block 3 and cushion.
A kind of gas turbine rotor attachment bolt pre-tightening apparatus provided by the utility model, structure is simple, be convenient to manufacture, to the pretension process of rotor attachment bolt without torsional shear and side force, to the contact surface of rotor attachment bolt also without frictionally damage, therefore, the quality that rotor attachment bolt connects and precision can be guaranteed in the assembling, unloading process of gas turbine rotor attachment bolt.
Although it will be appreciated by those skilled in the art that the utility model is described according to the mode of multiple embodiment, not each embodiment only comprises an independently technical scheme.So describe in description be only used to clear for the purpose of; description should integrally be understood by those skilled in the art, and regards technical scheme involved in each embodiment as the mode that mutually can be combined into different embodiment to understand protection domain of the present utility model.
The foregoing is only the schematic detailed description of the invention of the utility model, and be not used to limit scope of the present utility model.Any those skilled in the art, the equivalent variations done under the prerequisite not departing from design of the present utility model and principle, amendment and combination, all should belong to the scope of the utility model protection.
Claims (4)
1. a gas turbine rotor attachment bolt pre-tightening apparatus, it is characterized in that, it comprises back taper supporting base, described supporting base top is fixedly connected with a piston cylinder, described piston cylinder top has been rotatably connected adjusting nut, described adjusting nut is connected with a tensile bolt, and described tensile bolt is socketed with a quill, and described supporting base sidewall is provided with at least one opening for operating described quill.
2. gas turbine rotor attachment bolt pre-tightening apparatus according to claim 1, is characterized in that, described piston cylinder is hydraulic piston-cylinder.
3. gas turbine rotor attachment bolt pre-tightening apparatus according to claim 1, it is characterized in that, described quill is provided with regular hexagonal section.
4. gas turbine rotor attachment bolt pre-tightening apparatus according to claim 1, is characterized in that, described supporting base sidewall is evenly equipped with three described openings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520802381.5U CN205096828U (en) | 2015-10-16 | 2015-10-16 | Gas turbine rotor attachment bolt preloading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520802381.5U CN205096828U (en) | 2015-10-16 | 2015-10-16 | Gas turbine rotor attachment bolt preloading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205096828U true CN205096828U (en) | 2016-03-23 |
Family
ID=55512638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520802381.5U Active CN205096828U (en) | 2015-10-16 | 2015-10-16 | Gas turbine rotor attachment bolt preloading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205096828U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107225393A (en) * | 2017-06-02 | 2017-10-03 | 中国航发南方工业有限公司 | Compressor auxiliary installation device |
| CN108000436A (en) * | 2017-12-01 | 2018-05-08 | 中国航发南方工业有限公司 | A kind of aero-engine high-torque nut assembling method |
-
2015
- 2015-10-16 CN CN201520802381.5U patent/CN205096828U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107225393A (en) * | 2017-06-02 | 2017-10-03 | 中国航发南方工业有限公司 | Compressor auxiliary installation device |
| CN108000436A (en) * | 2017-12-01 | 2018-05-08 | 中国航发南方工业有限公司 | A kind of aero-engine high-torque nut assembling method |
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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 |