JPS6229703A - Locking mechanism for gas turbine bucket - Google Patents
Locking mechanism for gas turbine bucketInfo
- Publication number
- JPS6229703A JPS6229703A JP60166869A JP16686985A JPS6229703A JP S6229703 A JPS6229703 A JP S6229703A JP 60166869 A JP60166869 A JP 60166869A JP 16686985 A JP16686985 A JP 16686985A JP S6229703 A JPS6229703 A JP S6229703A
- Authority
- JP
- Japan
- Prior art keywords
- lock plate
- bucket
- pin
- spring
- locking mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、ガスタービンのバケットとディスクのロック
プレートに係り、特にロックプレートの廻り止めに関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a lock plate for a gas turbine bucket and a disk, and more particularly to preventing rotation of the lock plate.
バケットをディスクに組立てるため軸方向溝を有するも
のにおいて、軸方向溝がディスクに直角でない場合はバ
ケット抜け出し防止にはロックプレートを備える必要が
ある。In a device having an axial groove for assembling the bucket to the disk, if the axial groove is not perpendicular to the disk, it is necessary to provide a lock plate to prevent the bucket from slipping out.
従来ロックプレートの廻り止めは例えば特開昭５８−３
５２０３号公報に開示されている。公知のロック機構は
第２図、第３図、第４図、第５図に示すように、廻り止
めネジ４を使用して行っていた。このネジ４の抜け止め
にはカシメ５を行っている。Conventional lock plates for preventing rotation are disclosed in Japanese Patent Application Laid-Open No. 58-3, for example.
It is disclosed in Japanese Patent No. 5203. The known locking mechanism uses a rotation stopper screw 4, as shown in FIGS. 2, 3, 4, and 5. The screw 4 is caulked 5 to prevent it from coming off.
ロータ組立手順ネジ４の取付は、組立時は最後に分解時
は最初となるため特に第１図に示すロックプレート３ｂ
、３ａの廻り止めネジ４の取付カシメ５及び分解は非常
に困難な作業であり１作業に当っては多大な時間と費用
（治工具製作−）を要した。また作業性が悪いためカシ
メ５が不完全のために廻り止めネジ４が飛散するとか１
分解不可能と云うトラブルが発生している。Rotor assembly procedure The screws 4 are installed last during assembly and first during disassembly, so in particular the lock plate 3b shown in Fig. 1.
, 3a, the installation and caulking 5 of the rotation locking screw 4 and the disassembly were extremely difficult tasks, and each task required a great deal of time and cost (manufacturing of jigs and tools). Also, due to poor workability, the rotation set screw 4 may fly off due to incomplete caulking 5.
There is a problem that it cannot be disassembled.
本発明の目的は、上記した従来技術の欠点をなくシ、信
頼性の高いバケットロック機構を提供することである。SUMMARY OF THE INVENTION An object of the present invention is to eliminate the drawbacks of the prior art described above and provide a highly reliable bucket locking mechanism.
本発明は、バケットとディスクのロックプレート廻り止
めに、ロックプレートの外周側にピンを取付はバケット
側に設けた穴に差し込む構造にし。The present invention has a structure in which a pin is attached to the outer circumferential side of the lock plate and inserted into a hole provided on the bucket side to prevent the lock plate from rotating between the bucket and the disk.
更にロックプレートの内周側に設けたバネによりピンが
完全に穴に入っているようにし前記目的を達成するもの
である。Further, a spring provided on the inner peripheral side of the lock plate allows the pin to completely enter the hole, thereby achieving the above object.
次に発明の一実施例を第６図、第７図、第８図により説
明する。Next, one embodiment of the invention will be described with reference to FIGS. 6, 7, and 8.
バケット１は、デスク２にダブティール１０により連結
されているが、ダブティール部の間隙は熱膨張時の逃げ
、組立等のためにかなり大きくなっており、軸方向には
自由に動けるようになっている。従って、バケット１が
ディスク２より軸方向に抜け出さないようにロックプレ
ート３が必要である。The bucket 1 is connected to the desk 2 by a dovetail 10, but the gap between the dovetails is considerably large for escape during thermal expansion, assembly, etc., so that it can move freely in the axial direction. . Therefore, the lock plate 3 is necessary to prevent the bucket 1 from slipping out from the disk 2 in the axial direction.
更にロックプレート３はディスク２、バケット１が回転
してもロックプレート３自体が円周方向に廻らないよう
に本発明の廻り止めピン７、押し上げバネ８が必要とな
る。Further, the lock plate 3 requires the rotation stopper pin 7 and push-up spring 8 of the present invention so that the lock plate 3 itself does not rotate in the circumferential direction even when the disk 2 and the bucket 1 rotate.
本発明の構造は、バケット１の半径方向に回り止めピン
７を差し込む穴９を設ける。ロックプレート３には第８
図に示す如き廻り止めピン７、押し上げバネ８を設け、
第７図に示すようにバケット１に設けた穴９にロックプ
レート３に設けた廻り止めピン７を差し込み、押し上げ
バネ８にて外周側に押しつけ廻り止めピン７が抜けない
ようになっている。The structure of the present invention provides a hole 9 in the radial direction of the bucket 1 into which a detent pin 7 is inserted. Lock plate 3 has 8th
A rotation stopper pin 7 and a push-up spring 8 are provided as shown in the figure.
As shown in FIG. 7, a rotation stopper pin 7 provided on the lock plate 3 is inserted into a hole 9 provided in the bucket 1, and is pressed against the outer circumferential side by a push-up spring 8 to prevent the rotation stopper pin 7 from coming off.
また、押し上げバネ８はローラが静止している間だけロ
ックプレート３を外周側に押しつけているもので、ロー
タが回転すれば遠心力６が動く方向（外周側）にロック
プレート３が押しつけられるため押し上げバネ８に無理
がかかることもなく廻り止めピンが抜け出す心配もない
。In addition, the push-up spring 8 pushes the lock plate 3 toward the outer circumference only while the roller is stationary, and when the rotor rotates, the lock plate 3 is pushed in the direction in which the centrifugal force 6 moves (toward the outer circumference). No force is applied to the push-up spring 8, and there is no need to worry about the rotation stopper pin coming off.
本発明によれば、ロックプレートの廻り止めを完全に行
い、しかも作業性の悪い場所での廻り止めネジの取付、
取外し作業及び廻り止めネジの抜け止め用カシメ作業も
不要となるばかりでなく廻り止めネジ飛散の事故もなく
きわめて信頼性の高いロックプレー１〜の廻り止めを行
うことが出来る。According to the present invention, the rotation of the lock plate can be completely prevented, and the rotation prevention screw can be installed in a place where workability is poor.
Not only does the removal work and the caulking work for preventing the rotation stopper screw from coming off become unnecessary, but also the rotation of the lock play 1 can be prevented with extremely high reliability without the accident of the rotation stopper screw being scattered.
第１図は、条里タービンロータ組立状態図、第２図は、
従来のバケットロックプレートの廻り止めを示す正面図
、第３図は、第２図のＡ−Ａ矢視図、第４図は、第２図
のＢ−Ｂ断面図、第５図は、第４図のＣ−Ｃ矢視図、第
６図は、本発明の一実施例であるバケットのロックプレ
ート廻り止めを示す正面図、第７図は、第６図のＤ−Ｄ
断面図、第８図は、ロックプレートに本発明の廻り止め
ピン及び押し上げバネを追加した形状を示す正面図であ
る。
１・・・バケット、２・・・ディスク、３・・・ロック
プレート、４・・・廻り止めネジ、５・・・カシメ、７
・・・廻り止めピン、８・・・押し上げバネ、９・・・
ピン差し込み穴、１０・・・ダブティール。
出願人 工業技術院長 等々力達
第 １０
躬４０
第 ６＄
第 ７目Figure 1 is an assembly diagram of the Josato turbine rotor, Figure 2 is:
A front view showing a conventional bucket lock plate for preventing rotation, FIG. 3 is a view taken along the line A-A in FIG. 2, FIG. 4 is a sectional view taken along line B-B in FIG. 2, and FIG. 4 is a view taken along the line C-C in FIG. 4, FIG. 6 is a front view showing a bucket lock plate rotation stopper according to an embodiment of the present invention, and FIG. 7 is a view taken along the line D-D in FIG. 6.
The cross-sectional view and FIG. 8 are front views showing a shape in which a lock plate is provided with a rotation stopper pin and a push-up spring according to the present invention. 1...Bucket, 2...Disc, 3...Lock plate, 4...Rotating screw, 5...Crimping, 7
... Rotation stop pin, 8... Push-up spring, 9...
Pin insertion hole, 10...dovetail. Applicant Director of the Agency of Industrial Science and Technology Todoroki No. 10 40 No. 6 $ No. 7
Claims (1)
バケットの抜け出し及び、ダブテール部の冷却空気をシ
ールするロックプレートの廻り止めを行うものにおいて
、バケットとロックプレートのそれぞれに係合するよう
ロックプレートの外周側にピンを挿入し、このピンがバ
ケットの穴から外れないようにバネにて押し上げること
を特徴とするガスタービンのバケットロック機構。1. An axial groove provided in the disk allows the assembled bucket to come out and prevents the lock plate from rotating, which seals the cooling air in the dovetail section. A gas turbine bucket locking mechanism is characterized in that a pin is inserted into the outer circumferential side and is pushed up by a spring to prevent the pin from coming out of the hole in the bucket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60166869A JPS6229703A (en) | 1985-07-30 | 1985-07-30 | Locking mechanism for gas turbine bucket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60166869A JPS6229703A (en) | 1985-07-30 | 1985-07-30 | Locking mechanism for gas turbine bucket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6229703A true JPS6229703A (en) | 1987-02-07 |
| JPH0260842B2 JPH0260842B2 (en) | 1990-12-18 |
Family
ID=15839141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60166869A Granted JPS6229703A (en) | 1985-07-30 | 1985-07-30 | Locking mechanism for gas turbine bucket |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6229703A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5067877A (en) * | 1990-09-11 | 1991-11-26 | United Technologies Corporation | Fan blade axial retention device |
| JP2006275032A (en) * | 2005-03-30 | 2006-10-12 | Hitachi Ltd | Turbine blade and turbine equipment using the same |
| WO2008143634A2 (en) * | 2007-01-30 | 2008-11-27 | Siemens Energy, Inc. | Turbine seal plate locking system |
| EP3006675A1 (en) * | 2014-10-07 | 2016-04-13 | Rolls-Royce plc | Locking member |
-
1985
- 1985-07-30 JP JP60166869A patent/JPS6229703A/en active Granted
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5067877A (en) * | 1990-09-11 | 1991-11-26 | United Technologies Corporation | Fan blade axial retention device |
| JP2006275032A (en) * | 2005-03-30 | 2006-10-12 | Hitachi Ltd | Turbine blade and turbine equipment using the same |
| JP4498964B2 (en) * | 2005-03-30 | 2010-07-07 | 株式会社日立製作所 | Turbine blade and turbine equipment using the same |
| WO2008143634A2 (en) * | 2007-01-30 | 2008-11-27 | Siemens Energy, Inc. | Turbine seal plate locking system |
| WO2008143634A3 (en) * | 2007-01-30 | 2009-06-04 | Siemens Energy Inc | Turbine seal plate locking system |
| US7566201B2 (en) | 2007-01-30 | 2009-07-28 | Siemens Energy, Inc. | Turbine seal plate locking system |
| EP3006675A1 (en) * | 2014-10-07 | 2016-04-13 | Rolls-Royce plc | Locking member |
| US9995155B2 (en) | 2014-10-07 | 2018-06-12 | Rolls-Royce Plc | Locking member |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0260842B2 (en) | 1990-12-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |