CN101890699B - Stay bolt adjusting mechanism of gas turbine pull rod type rotor and operating method thereof - Google Patents
Stay bolt adjusting mechanism of gas turbine pull rod type rotor and operating method thereof Download PDFInfo
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- CN101890699B CN101890699B CN2010101861387A CN201010186138A CN101890699B CN 101890699 B CN101890699 B CN 101890699B CN 2010101861387 A CN2010101861387 A CN 2010101861387A CN 201010186138 A CN201010186138 A CN 201010186138A CN 101890699 B CN101890699 B CN 101890699B
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Abstract
The invention provides a stay bolt adjusting mechanism of gas turbine pull rod type rotor. The stay bolt comprises a pull rod and two pull-rod nuts arranged at the two ends thereof, the stay bolt adjusting mechanism comprises a rotary sleeve and a compressor, the compressor is arranged on the outer end face of the pull-rod nut, so as to provide axial pressure for the pull rod; the rotary sleeve is sheathed and connected on the pull rod nut, and the inner surface of the rotary sleeve and the outer side face of the pull rod nut are co-ordinately arranged. Actual use and verification show that the adjusting mechanism has smart and reasonable structure design as well as simple and convenient manufacturing and operation, so that accurate adjusting in up-down direction can be carried out on the stay bolt even the gas turbine pull rod type rotor is in vertical state, thus well meeting the accuracy requirement of adjusting on the stay bolt of gas turbine pull rod type rotor and ensuring the quality and requirement of product.
Description
Technical field
The present invention relates to the manufacturing production field of rod-pulling type workpiece, specifically is a kind of guiding mechanism and method of work thereof of stay-bolt of gas turbine pull rod type rotor.
Background technology
As shown in Figure 1; Gas turbine pull rod type rotor is a kind of like this rotor form: rotor body is not a whole heavy forging; But by parts such as pull bar 1, spindle nose 2, wheel disc 3 and jackshafts 4, will be with the stay-bolt of some with the upper-part rotor block that is formed by connecting.
The stay-bolt of gas turbine pull rod type rotor is a kind of large diameter stud structure, and according to the quantity and the connecting portion of attaching parts, length is different; When stay-bolt connects, earlier stay-bolt is penetrated each parts, with the two ends pull-rod nut of screwing on, fastening nut is given certain tight power, and each parts of rotor are connected closely.
Gas turbine pull rod type rotor is a upright state when connecting, therefore, penetrate pull-rod nut after, at first need upper and lower accurate adjustment screw rod earlier, screw rod is on the fixing design load position, and then carries out the tension of stay-bolt.Domestic prior art can't be adjusted stay-bolt, because, if directly loosening stay-bolt; The position of upper and lower adjustment screw rod; Because the self gravitation effect of pull bar can make pull bar produce axial micro-error, can't grasp the position of stay-bolt adjustment accurately; Make the assembling of gas turbine pull rod type rotor not meet high-precision requirement, produce potential safety hazard.Because the restriction and the restriction of gas turbine pull rod type rotor mounting technology and stay-bolt adjustment technology, in the gas turbine that state internal-combustion gas turbine engine producer is produced, its pull rod type rotor is generally the semi-finished product of external introduction.The pull rod type rotor that import is external makes production cost increase, and is unfavorable for the market-oriented requirement of product.
Summary of the invention
The objective of the invention is to: the guiding mechanism and the method for work thereof of stay-bolt that a kind of gas turbine pull rod type rotor of independent research is provided; Make gas turbine pull rod type rotor when establishing state, still can to stay-bolt carry out upper and lower to accurate adjustment.
The technical scheme that the present invention adopted is:
A kind of stay bolt adjusting mechanism of gas turbine pull rod type rotor; Said stay-bolt comprises the pull-rod nut at pull bar and two ends thereof; The guiding mechanism of said stay-bolt comprises turn sleeve and hold down gag; Said hold down gag is installed on the outer face of pull-rod nut, to pull bar axial compressive force is provided; The turn jacket casing is connected on the pull-rod nut, and its inner surface cooperates installation with the lateral surface of pull-rod nut.
Said hold down gag comprises screw and clamp nut, and the inside of said clamp nut is stepped, and an end cooperates installation with the outer pull bar of pull-rod nut end face, and the other end and screw fit are installed, and screw screws in from the outer face of clamp nut, compresses the pull bar end face.
The end face that compresses of said screw is an inner conical surface, and compressing of corresponding screw is furnished with a steel ball between end face and the pull bar end face.
The outer surface cloth of said turn sleeve is equipped with spanner.
A kind of method of work of stay bolt adjusting mechanism of gas turbine pull rod type rotor may further comprise the steps:
(1) described turn sleeve and hold down gag are assembled on the stay-bolt of gas turbine pull rod type rotor, constitute described stay bolt adjusting mechanism;
(2) hold down gag of screwing makes hold down gag to pull bar axial compressive force is provided;
(3) through the loosening pull-rod nut of turn sleeve, regulate the position of hold down gag, make the anglec of rotation of pull bar change, thus the rising or the decline of adjustment pull bar;
(4) adjustment finishes, straining at stem nut, the dismounting stay bolt adjusting mechanism.
The beneficial effect that the present invention produced is:
Use and verify through scene actual; The stay bolt adjusting mechanism of the gas turbine pull rod type rotor of this independent research provided by the invention; Structural design is ingenious, reasonable; Make and easy and simple to handle, make gas turbine pull rod type rotor when establishing state, still can to stay-bolt carry out upper and lower to accurate adjustment.Its method of work is easy and simple to handle, and controllability is strong, has well satisfied the required precision of the stay-bolt adjustment of gas turbine pull rod type rotor, makes production assurance, has satisfied the needs of design.
Description of drawings
Fig. 1 is the structural representation of gas turbine pull rod type rotor.
Fig. 2 is the structural representation of stay bolt adjusting mechanism of the present invention.
Fig. 3 is the three-dimensional cutaway view of stay bolt adjusting mechanism of the present invention.
Label is represented among the figure: 1-pull bar, 2-spindle nose, 3-wheel disc, 4-jackshaft, 5-screw, 6-steel ball, 7-clamp nut, 8-turn sleeve, 9-pull-rod nut.
The specific embodiment
As shown in Figure 1, gas turbine pull rod type rotor couples together its each parts through stay-bolt, and this stay-bolt is a kind of large diameter stud structure, comprises the pull-rod nut 9 at pull bar 1 and two ends thereof.After the pull-rod nut 9 at pull bar 1 two ends is tightened, axial compressive force is provided for pull bar 1, makes each parts of gas turbine pull rod type rotor connect closely.
Like Fig. 2, shown in Figure 3, the present invention is a kind of guiding mechanism of stay-bolt of gas turbine pull rod type rotor, comprises turn sleeve and hold down gag.
Hold down gag comprises screw 5, steel ball 6 and clamp nut 7.These clamp nut 7 outsides are sleeve-like, and are inner stepped, have two sections internal threads that internal diameter is inequality on the inner surface.One section internal thread of clamp nut 7 cooperates installation with the outer pull bar 1 of pull-rod nut 9 end faces, and another section internal thread cooperates installation with screw 5.Screw 5 screws in from the outer face of clamp nut 7, compresses the end face of pull bar 1, and the end face that compresses of screw 5 is inner conical surfaces.Compressing between end face and pull bar 1 end face of screw 5 is furnished with a steel ball 6.Screw 5 after tightening, make steel ball 6 surface and screw 5 compress end face, pull bar 1 end face closely contacts, thereby make clamp nut 7 under the effect of screw 5, to pull bar axial compressive force is provided, hold on to pull bar 1.
Turn sleeve 8 is sleeves that an outer surface cloth is equipped with a plurality of spanners, and inner surface is interior six sides, cooperates installation with the lateral surface of pull-rod nut 9.Through rotating turn sleeve 8, make pull-rod nut 9 on pull bar 1, move, thus the position of adjustment pull-rod nut.
The method of work of the stay bolt adjusting mechanism of this gas turbine pull rod type rotor is:
(1) stay bolt adjusting mechanism of assembling gas turbine engine pull rod type rotor.At first, place a steel ball 6 at the center hole place of the upper surface of pull bar 1, the pull bar 1 externally threaded position of exposing in pull-rod nut 9 upper ends screws on clamp nut 7.Then, above clamp nut 7, screw in screw 5, make the inner conical surface of screw 5 push down steel ball 6.At last,, put turn sleeve 8, make interior six Founders of turn sleeve 8 be stuck on the pull-rod nut 9 well in the outside of clamp nut 7.
(2) hold down gag of screwing makes hold down gag to pull bar axial compressive force is provided.The clamp nut 7 of screwing is earlier tightened screw 5 again, makes the steel ball 6 of screw 5 belows tightly be pressed on the end face of pull bar 1, adopts this mode can make clamp nut 7 hold on to pull bar 1.
(3) through turn sleeve 8 loosening pull-rod nuts 9, regulate the position of hold down gag, make the anglec of rotation of pull bar 1 change, thus the rising or the decline of adjustment pull bar 1.Through rotating the spanner on turn sleeve 8 surfaces, make turn sleeve 8 drive pull-rod nut 9 and rotate, make pull-rod nut 9 become flexible, not stress, axial compressive force is not provided to pull bar 1; At this moment, rotate clamp nut 7 again, thereby rotating rod 1 changes the anglec of rotation of pull bar 1, adjusts the rising or the decline of pull bar 1 with this,
Adjustment finishes, straining at stem nut 9, the dismounting stay bolt adjusting mechanism.Take off turn sleeve 8, screw out screw 5, screw out clamp nut 7, take off steel ball 6, can accomplish dismounting the stay bolt adjusting mechanism of this gas turbine pull rod type rotor.
Claims (4)
1. the stay bolt adjusting mechanism of a gas turbine pull rod type rotor; Said stay-bolt comprises the pull-rod nut at pull bar and two ends thereof; It is characterized in that: the guiding mechanism of said stay-bolt comprises turn sleeve and hold down gag; Said hold down gag is installed on the outer face of pull-rod nut, to pull bar axial compressive force is provided; The turn jacket casing is connected on the pull-rod nut, and its inner surface cooperates installation with the lateral surface of pull-rod nut; Said hold down gag comprises screw and clamp nut, and the inside of said clamp nut is stepped, and an end cooperates installation with the outer pull bar of pull-rod nut end face, and the other end and screw fit are installed, and screw screws in from the outer face of clamp nut, compresses the pull bar end face.
2. the stay bolt adjusting mechanism of gas turbine pull rod type rotor according to claim 1, it is characterized in that: the end face that compresses of said screw is an inner conical surface, compressing of corresponding screw is furnished with a steel ball between end face and the pull bar end face.
3. the stay bolt adjusting mechanism of gas turbine pull rod type rotor according to claim 1, it is characterized in that: the outer surface cloth of said turn sleeve is equipped with spanner.
4. the method for work of the stay bolt adjusting mechanism of a gas turbine pull rod type rotor may further comprise the steps:
(1) on the stay-bolt that the turn sleeve in the described stay bolt adjusting mechanism of claim 1 and hold down gag is assembled in gas turbine pull rod type rotor, constitutes the described stay bolt adjusting mechanism of claim 1;
(2) hold down gag of screwing makes hold down gag to pull bar axial compressive force is provided;
(3) through the loosening pull-rod nut of turn sleeve, regulate the position of hold down gag, make the anglec of rotation of pull bar change, thus the rising or the decline of adjustment pull bar;
(4) adjustment finishes, straining at stem nut, the dismounting stay bolt adjusting mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101861387A CN101890699B (en) | 2010-05-22 | 2010-05-22 | Stay bolt adjusting mechanism of gas turbine pull rod type rotor and operating method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101861387A CN101890699B (en) | 2010-05-22 | 2010-05-22 | Stay bolt adjusting mechanism of gas turbine pull rod type rotor and operating method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN101890699A CN101890699A (en) | 2010-11-24 |
| CN101890699B true CN101890699B (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101861387A Active CN101890699B (en) | 2010-05-22 | 2010-05-22 | Stay bolt adjusting mechanism of gas turbine pull rod type rotor and operating method thereof |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116201A (en) * | 2011-02-22 | 2011-07-06 | 西安交通大学 | Disc-type rod fastening rotor structure for heavy-duty gas turbine |
| CN102717369A (en) * | 2012-03-29 | 2012-10-10 | 张启富 | Airborne type submachine gun |
| EP3093641B1 (en) * | 2015-05-11 | 2017-06-28 | Siemens Aktiengesellschaft | Method for determining the axial tensile force introduced into a component |
| CN105598913B (en) * | 2016-03-28 | 2017-03-22 | 重庆超力高科技股份有限公司 | Stud release type gun head |
| CN112388555B (en) * | 2020-10-12 | 2022-07-15 | 首钢京唐钢铁联合有限责任公司 | Hydraulic fastening device for draw-bar bolt |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5119700A (en) * | 1991-03-01 | 1992-06-09 | Titan Tool Company | Automatic stud driving tool having collarless retention mechanism for driven head |
| US5339512A (en) * | 1992-04-15 | 1994-08-23 | Ovako Couplings Ab | Method for prestressing casingbolts |
| CN2493361Y (en) * | 2001-06-13 | 2002-05-29 | 桑有富 | Double-head screw dismounting device |
| CN201109093Y (en) * | 2007-11-28 | 2008-09-03 | 重庆建设摩托车股份有限公司 | Double pointed nail assembling bushing |
-
2010
- 2010-05-22 CN CN2010101861387A patent/CN101890699B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5119700A (en) * | 1991-03-01 | 1992-06-09 | Titan Tool Company | Automatic stud driving tool having collarless retention mechanism for driven head |
| US5339512A (en) * | 1992-04-15 | 1994-08-23 | Ovako Couplings Ab | Method for prestressing casingbolts |
| CN2493361Y (en) * | 2001-06-13 | 2002-05-29 | 桑有富 | Double-head screw dismounting device |
| CN201109093Y (en) * | 2007-11-28 | 2008-09-03 | 重庆建设摩托车股份有限公司 | Double pointed nail assembling bushing |
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| Publication number | Publication date |
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| CN101890699A (en) | 2010-11-24 |
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