JPS63601B2 - - Google Patents
Info
- Publication number
- JPS63601B2 JPS63601B2 JP2157981A JP2157981A JPS63601B2 JP S63601 B2 JPS63601 B2 JP S63601B2 JP 2157981 A JP2157981 A JP 2157981A JP 2157981 A JP2157981 A JP 2157981A JP S63601 B2 JPS63601 B2 JP S63601B2
- Authority
- JP
- Japan
- Prior art keywords
- rotating shaft
- jig
- rotating body
- hydraulic pressure
- hole
- 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.)
- Expired
Links
- 238000000034 method Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/04—Blade-carrying members, e.g. rotors for radial-flow machines or engines
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
【発明の詳細な説明】
本発明は段付部を有する回転軸の大径部に固定
された回転体例えば羽根車の離脱方法に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for removing a rotating body, such as an impeller, which is fixed to a large diameter portion of a rotating shaft having a stepped portion.
従来の羽根車１は第１図Ａ，Ｂに示すように、
段付部、すなわち大，小径部２ａ，２ｂを有する
回転軸２の大径部２ａにキー３または焼きばめま
たは大径部２ａに設けたスプライン４を介してそ
れぞれ固定されている。このような手段によれ
ば、分解時における羽根車１のボス抜出し作業は
容易であるか、回転軸２に設けた切欠部の影響が
大であるから疲労強度に問題がある。 The conventional impeller 1, as shown in FIGS. 1A and B,
It is fixed to a large diameter portion 2a of a rotating shaft 2 having stepped portions, that is, large and small diameter portions 2a and 2b, via a key 3, a shrink fit, or a spline 4 provided on the large diameter portion 2a, respectively. According to such a means, it is easy to remove the boss of the impeller 1 during disassembly, or there is a problem in fatigue strength because the notch provided in the rotating shaft 2 has a large influence.
本発明は上記欠点を解消するためになされたも
ので、段付き部を有する回転軸の大径部に固定さ
れた回転体において、治具取付孔、油圧供給孔お
よび空気抜き孔を設けた治具を回転軸の小径部に
はめ込んで回転体と一体に結合した後に、前記油
圧供給孔より油圧を供給し回転体を浮上させると
共に、回転軸の段付部に回転体を引抜くスラスト
力を発生させるようにしたことを特徴とするもの
である。 The present invention has been made in order to solve the above-mentioned drawbacks, and is a rotating body fixed to a large diameter part of a rotating shaft having a stepped part. is fitted into the small diameter part of the rotating shaft and is integrally connected to the rotating body, and then hydraulic pressure is supplied from the hydraulic pressure supply hole to levitate the rotating body, and a thrust force is generated on the stepped part of the rotating shaft to pull out the rotating body. This feature is characterized in that it allows the user to
以下本発明の一実施態様を図面について説明す
る。 An embodiment of the present invention will be described below with reference to the drawings.
第２図および第３図において、１は羽根車で、
この羽根車１のボス部１ａは回転軸２の大径部２
ａに嵌合して固定されている。５はボス部１ａの
端面に設けられたボルト穴、６は治具で、この治
具６の中央部に回転軸２の小径部２ｂと同径の治
具取付孔７が設けられると共に、その治具取付孔
７の周囲に油圧供給孔８、空気抜き孔９および治
具固定用ボルト孔１０が設けられており、かつ治
具６のボス１ａ側端面には凹部１１が設けられて
いる。１２ａ，１２ｂは治具６の凹部１１および
内周面にそれぞれ設けられたＯリング、１３は治
具６およびボス部１ａのボルト穴10.5にねじ込ま
れたボルトである。 In Figures 2 and 3, 1 is an impeller;
The boss portion 1a of this impeller 1 is the large diameter portion 2 of the rotating shaft 2.
A is fitted and fixed. 5 is a bolt hole provided on the end face of the boss portion 1a, and 6 is a jig.A jig mounting hole 7 having the same diameter as the small diameter portion 2b of the rotating shaft 2 is provided in the center of the jig 6. A hydraulic pressure supply hole 8, an air vent hole 9, and a jig fixing bolt hole 10 are provided around the jig mounting hole 7, and a recess 11 is provided in the end surface of the jig 6 on the boss 1a side. 12a and 12b are O-rings provided in the recess 11 and the inner peripheral surface of the jig 6, respectively, and 13 is a bolt screwed into the bolt hole 10.5 of the jig 6 and the boss portion 1a.
次に回転軸２の大径部２ａに嵌合して固定され
た羽根車１を離脱させる場合について説明する。 Next, a case will be described in which the impeller 1 that is fitted and fixed to the large diameter portion 2a of the rotating shaft 2 is removed.
まず治具６の治具取付孔７を回転軸２の小径部
２ｂにはめ込み、ついで治具固定用ボルト孔１０
にボルト１３をねじ込み、その先端を羽根車１の
ボス部１ａに設けたボルト穴５にねじ込んで治具
６をボス部１ａに結合して一体化する。 First, fit the jig mounting hole 7 of the jig 6 into the small diameter portion 2b of the rotating shaft 2, and then fit the jig fixing bolt hole 10.
A bolt 13 is screwed in, and the tip thereof is screwed into a bolt hole 5 provided in the boss portion 1a of the impeller 1, thereby connecting the jig 6 to the boss portion 1a and integrating the jig 6 with the boss portion 1a.
次に回転軸２の段付部すなわち大、小径部２
ａ，２ｂの端部、ボス部１ａおよび治具６の凹部
１１により形成される室１４へ油圧供給孔８より
油圧を供給する。前記室１４内の油圧が所定圧に
達すると、ボス部１ａの内径が拡大されると共
に、回転軸２の大，小径部２ａ，２ｂの段差によ
り発生するスラスト力Ｆにより、ボス部１ａは左
方向に摺動されて大径部２ａより容易に離脱す
る。 Next, the stepped portion of the rotating shaft 2, that is, the large and small diameter portions 2
Hydraulic pressure is supplied from the hydraulic pressure supply hole 8 to the chamber 14 formed by the ends of the parts a and 2b, the boss part 1a, and the recess 11 of the jig 6. When the oil pressure in the chamber 14 reaches a predetermined pressure, the inner diameter of the boss portion 1a is expanded, and the thrust force F generated by the step between the large and small diameter portions 2a and 2b of the rotating shaft 2 causes the boss portion 1a to move to the left. direction and easily separates from the large diameter portion 2a.
この場合、上記室１４内にたまつた空気を空気
抜き孔９を介して排出した後に、その空気抜き孔
９の出口にプラグ１５を取付けて閉鎖する。また
室１４へ油圧を供給した際、治具６とボス部１ａ
および回転軸の小径部２ｂとの各接合面はＯリン
グ１２ａ，１２ｂを介してそれぞれシールされて
いるから油が漏洩する恐れはない。 In this case, after the air accumulated in the chamber 14 is discharged through the air vent hole 9, a plug 15 is attached to the outlet of the air vent hole 9 to close it. Also, when hydraulic pressure is supplied to the chamber 14, the jig 6 and the boss portion 1a
Since each joint surface with the small diameter portion 2b of the rotating shaft is sealed via O-rings 12a and 12b, there is no fear of oil leakage.
以上説明したように、本発明によれば油圧作用
により回転軸に固定された回転体を容易に離脱さ
せることができる。また回転軸を従来のように加
工しないので、疲労強度の低下を防止することが
できる。 As explained above, according to the present invention, the rotating body fixed to the rotating shaft can be easily detached by hydraulic action. Furthermore, since the rotating shaft is not machined as in the conventional method, a decrease in fatigue strength can be prevented.
第１図Ａ，Ｂは従来の羽根車の取付状態を示す
断面図、第２図および第３図は本発明の回転体の
離脱方法の一実施態様を示す断面図である。
１……回転体、２……回転軸、２ｂ……小径
部、６……治具、７……治具取付孔、８……油圧
供給孔、９……空気供給孔、１０……空気抜き
孔。
FIGS. 1A and 1B are cross-sectional views showing how a conventional impeller is attached, and FIGS. 2 and 3 are cross-sectional views showing an embodiment of the rotary body detachment method of the present invention. 1...Rotating body, 2...Rotating shaft, 2b...Small diameter part, 6...Jig, 7...Jig mounting hole, 8...Hydraulic pressure supply hole, 9...Air supply hole, 10...Air vent Hole.
Claims (1)
た回転体において、治具取付孔、油圧供給孔およ
び空気抜き孔を設けた治具を回転軸の小径部には
め込んで回転体と一体に結合した後に、前記油圧
供給孔より油圧を供給し回転体を浮上させると共
に、回転軸の段付部に回転体を引抜くスラスト力
を発生させるようにしたことを特徴とする回転体
の離脱方法。1. In a rotating body fixed to the large diameter part of a rotating shaft having a stepped part, a jig provided with a jig mounting hole, a hydraulic pressure supply hole, and an air vent hole is fitted into the small diameter part of the rotating shaft and integrated with the rotating body. A method for detaching a rotating body, characterized in that after the coupling, hydraulic pressure is supplied from the hydraulic pressure supply hole to levitate the rotating body, and at the same time, a thrust force is generated at a stepped portion of the rotating shaft to pull out the rotating body. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2157981A JPS57137603A (en) | 1981-02-18 | 1981-02-18 | Removal method of rotary unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2157981A JPS57137603A (en) | 1981-02-18 | 1981-02-18 | Removal method of rotary unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57137603A JPS57137603A (en) | 1982-08-25 |
| JPS63601B2 true JPS63601B2 (en) | 1988-01-07 |
Family
ID=12058942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2157981A Granted JPS57137603A (en) | 1981-02-18 | 1981-02-18 | Removal method of rotary unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57137603A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6038198U (en) * | 1983-08-25 | 1985-03-16 | 株式会社荏原製作所 | impeller |
| JPS6125599U (en) * | 1984-04-04 | 1986-02-15 | 株式会社荏原製作所 | impeller |
-
1981
- 1981-02-18 JP JP2157981A patent/JPS57137603A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57137603A (en) | 1982-08-25 |
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