JPS62251401A - Mounting structure for ceramic made impeller - Google Patents
Mounting structure for ceramic made impellerInfo
- Publication number
- JPS62251401A JPS62251401A JP9441086A JP9441086A JPS62251401A JP S62251401 A JPS62251401 A JP S62251401A JP 9441086 A JP9441086 A JP 9441086A JP 9441086 A JP9441086 A JP 9441086A JP S62251401 A JPS62251401 A JP S62251401A
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- ceramic
- impeller
- tapered
- mounting 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.)
- Pending
Links
- 239000000919 ceramic Substances 0.000 title claims abstract description 43
- 125000006850 spacer group Chemical group 0.000 claims abstract description 17
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 17
- 230000002093 peripheral effect Effects 0.000 description 4
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 102100026827 Protein associated with UVRAG as autophagy enhancer Human genes 0.000 description 1
- 101710102978 Protein associated with UVRAG as autophagy enhancer Proteins 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910001105 martensitic stainless steel Inorganic materials 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Supercharger (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Ceramic Products (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は排気ターボチャージャ、ガスタービン等のセラ
ミックからなる羽根車をセラミックからなる軸に堰り付
ける構造に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a structure in which a ceramic impeller of an exhaust turbocharger, a gas turbine, etc. is mounted on a ceramic shaft.
（従来の技術） 従来のこの種取付構造の１例が第７図に示されている。(Conventional technology) An example of a conventional mounting structure of this type is shown in FIG.
セラミックファンＯ１はその取付穴〇１ａ内にセラミッ
ク軸０２を貫通させ、このセラミック軸０２に形成され
た螺糸０２ａに螺入されたナツト０３で突起０４に向っ
て押圧することによりセラミック軸０２に取り付けられ
ている。そして、このセラミック軸０２はそのｌ端を金
属軸０５の１端とインロー嵌合させ、かつ、そのフラン
ジ０６と金属軸０５のフランジ０７とをボルト０８で締
結することによって金属軸０５に連結されている。０９
は断熱板である。The ceramic fan O1 is attached to the ceramic shaft 02 by passing the ceramic shaft 02 through the mounting hole 1a and pressing the nut 03 screwed into the thread 02a formed on the ceramic shaft 02 toward the protrusion 04. attached. The ceramic shaft 02 is connected to the metal shaft 05 by fitting its L end into one end of the metal shaft 05 with a spigot, and by fastening the flange 06 and the flange 07 of the metal shaft 05 with bolts 08. ing. 09
is a heat insulating board.
（発明が解決しようとする問題点）
上記従来の取付セラミックファン０１を高温下で高速回
転させると、取付穴０１ａの内周面とセラミック軸０２
の外周面との間に隙間が発生してセラミックファンＯ１
が振動するという不具合があった。(Problems to be Solved by the Invention) When the above-mentioned conventional mounting ceramic fan 01 is rotated at high speed under high temperature, the inner peripheral surface of the mounting hole 01a and the ceramic shaft 02
A gap is generated between the outer peripheral surface of the ceramic fan O1
There was a problem with the unit vibrating.
また、セラミックファン０１とセラミック軸０２との温
度差により発生する軸力や振動によって螺糸０２ａが破
損し、更に、ナツト０３の回り止めが困難なため長時間
運転するとナフ１−０３が弛むという不具合があった。In addition, the screw thread 02a is damaged due to the axial force and vibration caused by the temperature difference between the ceramic fan 01 and the ceramic shaft 02, and furthermore, it is difficult to prevent the nut 03 from rotating, so the nuff 1-03 loosens when operated for a long time. There was a problem.
（問題点を解決するための手段）
本発明は上記不具合を解消するために発明されたもので
あって、その要旨とするところは、セラミックからなる
羽根車のテーパ状の取付穴内にそのテーパ面がセラミッ
クからなる軸の外周に設けた突起に向って先細となるよ
うに上記軸を貫通させ、上記軸に摺動自在に嵌合された
テーパピースをその背後から上記軸に嵌合された伸縮継
手付スペーサで上記突起に向って押推することによりテ
ーパピースの外周に形成された先細のテーパ面を上記羽
根車の取付穴のテーパ面に係合せしめたことを特徴とす
るセラミック製羽根車の取付構造にある。(Means for Solving the Problems) The present invention was invented to solve the above-mentioned problems, and the gist thereof is to provide a tapered surface of a ceramic impeller in a tapered mounting hole. The expansion joint is made of ceramic and is passed through the shaft so that it tapers toward a protrusion provided on the outer periphery of the shaft, and a taper piece is slidably fitted to the shaft and is fitted to the shaft from behind. Mounting of a ceramic impeller characterized in that the tapered surface formed on the outer periphery of the tapered piece is engaged with the tapered surface of the mounting hole of the impeller by pushing it toward the projection with a spacer. It's in the structure.
（作用）
本発明においては、上記構成を具えているため、テーパ
ピースはスペーサの伸縮継手の弾発力によって常時軸方
向に押推されその外周の先細のテーパ面は羽根車の取付
穴のテーパ面と係合するので羽根車の軸方向位置は不変
で、かつ、その半径方向変位はテーパピースの軸方向移
動によって吸収される。(Function) Since the present invention has the above configuration, the taper piece is always pushed in the axial direction by the elastic force of the expansion joint of the spacer, and the tapered surface on the outer periphery is the tapered surface of the mounting hole of the impeller. , the axial position of the impeller remains unchanged, and its radial displacement is absorbed by the axial movement of the taper piece.
（男施例）
本発明の１実施例が第１図ないし第３図に示されている
。ｌはセラミックファンで、窒化硅素、炭化硅素、アル
ミナ、ジルコニア等のセラミックからなる。２はセラミ
ック軸で、セラミックファンｌと同様のセラミックから
なる。セラミックファン１はテーパ状の取付穴１ａを具
え、この取付穴ｌａ内にそのテーパ面がセラミック軸２
の右端に突設された突起２ａに向って先細になるように
セラミック軸２が貫通せしめられている。３はテーパピ
ースで、セラミック、マルテンサイト系ステンレス鋼、
耐熱鋼等からなりセラミック軸２に摺動自在に嵌合され
ている。４は伸縮継手４ａを具えたスペーサで、セラミ
ック軸２に嵌合されている。(Male Embodiment) One embodiment of the invention is shown in FIGS. 1-3. 1 is a ceramic fan made of ceramic such as silicon nitride, silicon carbide, alumina, and zirconia. 2 is a ceramic shaft made of the same ceramic as the ceramic fan 1. The ceramic fan 1 has a tapered mounting hole 1a, and the tapered surface of the ceramic shaft 2 is disposed within the mounting hole la.
A ceramic shaft 2 is passed through so as to taper toward a protrusion 2a protruding from the right end. 3 is a tapered piece made of ceramic, martensitic stainless steel,
It is made of heat-resistant steel or the like and is slidably fitted onto the ceramic shaft 2. 4 is a spacer equipped with an expansion joint 4a, which is fitted onto the ceramic shaft 2.
セラミック軸２の左端部外周面に凹所２ｂが設けられ、
この凹所２ｂに金属製のフランジ６が嵌合される。凹所
２ｂの左側には鍔２ｃが形成され、この！Ｆ２ｃには第
２図に示すように円周方向に等間隔を隔てて複数個（図
には４ケ）の切り欠き２ｄが形成され、この切り欠き２
ｄにフランジ６の内周面に形成された凸部６ａを整合さ
せ、フランジ６を右方に押し込んで凹所２ｂに嵌合し、
フランジ６をその軸回りに４５°回転させる。そして、
金属軸７の右端に形成されたフランジ７ａとフランジ６
とを締結ボルト８によって締結すると、金属軸７の右端
の斜面７ｂがセラミック軸２の左端の斜面２ｅに当接し
、フランジ６の凸部６ａの左側の斜面６ｂが鍔２ｃの右
側の斜面２ｆに当接し、セラミック軸２と金属軸７とは
ガタなく結合される。A recess 2b is provided on the outer peripheral surface of the left end of the ceramic shaft 2,
A metal flange 6 is fitted into this recess 2b. A collar 2c is formed on the left side of the recess 2b, and this! As shown in FIG. 2, a plurality of notches 2d (four in the figure) are formed at equal intervals in the circumferential direction on F2c.
d, align the convex portion 6a formed on the inner peripheral surface of the flange 6, push the flange 6 to the right and fit it into the recess 2b,
The flange 6 is rotated 45° around its axis. and,
Flange 7a and flange 6 formed on the right end of metal shaft 7
When these are fastened with the fastening bolts 8, the slope 7b on the right end of the metal shaft 7 contacts the slope 2e on the left end of the ceramic shaft 2, and the slope 6b on the left of the convex portion 6a of the flange 6 contacts the slope 2f on the right side of the collar 2c. The ceramic shaft 2 and the metal shaft 7 are brought into contact with each other, and the ceramic shaft 2 and the metal shaft 7 are connected without play.
セラミックファン１と突起２ａとの間に金属製の緩衝リ
ング９を介在させ、かつ、テーパピース３とスペーサ４
との間に上記と同様の金属製の緩衝リングＩＯを介在さ
せて、フランジ７ａにその左側から調節ポル目１を螺入
しフランジ６を貫通させてその先端でスペーサ４を押推
して、テーパピース３をその背後から突起２ａに向かっ
て押推することによりテーパピース３の外周に形成され
た先細のテーパ面３ａは取付穴１ａのテーパ面と係合す
る。調節ボルト１１の螺入量を加減することによりスペ
ーサ４の伸１Ｉｉｌ′Ｉａ手４ａの押付力を調節できる
。１２は断熱板である。A metal buffer ring 9 is interposed between the ceramic fan 1 and the protrusion 2a, and the tapered piece 3 and the spacer 4
A metal buffer ring IO similar to that described above is interposed between the flange 7a, and the adjustment hole 1 is screwed into the flange 7a from the left side, passed through the flange 6, and the spacer 4 is pushed with its tip to form the taper piece. 3 from behind toward the protrusion 2a, the tapered surface 3a formed on the outer periphery of the tapered piece 3 engages with the tapered surface of the attachment hole 1a. By adjusting the screwing amount of the adjustment bolt 11, the pressing force of the hand 4a on the spacer 4 can be adjusted. 12 is a heat insulating board.
第４図には本発明の第２の実施例が示されている。これ
はセラミック軸２の左端に穿設された孔２ｇ内に金属軸
７の右端に突設された小径部７ｃを挿入し、孔２ｇと小
径部７ｃとの間に金属製の円筒状４／：顧衝材１３を介
在させて螺入することによってセラミック軸２と金属軸
７を連結する。ねじ面１３ａのねし底の曲率半径を太き
（することによってねじ面の破損を防止することができ
、また、弛み止めに必要あればねじ面１３ａ 、 １３
ｂを接着剤で接着する。そして、金属軸７のフランジ７
ａに螺入された調節ポルｌ−１１の先端でスペーサ４を
押推するようにしている。他の構成は第１図に示す第１
の実施例と同様であり対応する部材には同じ符号が付さ
れている。A second embodiment of the invention is shown in FIG. This is done by inserting a small diameter part 7c protruding from the right end of the metal shaft 7 into a hole 2g bored at the left end of the ceramic shaft 2, and inserting a metal cylindrical 4/4 in between the hole 2g and the small diameter part 7c. : The ceramic shaft 2 and the metal shaft 7 are connected by screwing in with the interposition of the supporting material 13. By increasing the radius of curvature of the threaded bottom of the threaded surface 13a, damage to the threaded surface can be prevented, and if necessary to prevent loosening, the threaded surface 13a, 13
Glue b with adhesive. And the flange 7 of the metal shaft 7
The spacer 4 is pushed by the tip of the adjustment pole l-11 screwed into the spacer a. Other configurations are shown in Figure 1.
This embodiment is similar to that of the embodiment, and corresponding members are given the same reference numerals.
第５図及び第６図には本発明の第３の実施例が示されて
いる。これはセラミック軸２の左端に穿設されたねじ孔
２ｈ内に金属製のスペーサ１４の右端から突出するねじ
棒１４ａを螺入するとともにセラミック軸２とスペーサ
１４との間に断面り型の緩衝材１５を介在させている。A third embodiment of the invention is shown in FIGS. 5 and 6. A threaded rod 14a protruding from the right end of a metal spacer 14 is screwed into a screw hole 2h drilled at the left end of the ceramic shaft 2, and a cross-section type buffer is provided between the ceramic shaft 2 and the spacer 14. A material 15 is interposed.
ねじ孔２ｈのねじ底の曲率半径を極力大きくすればねじ
の破損を防止できる。If the radius of curvature of the screw bottom of the screw hole 2h is made as large as possible, damage to the screw can be prevented.
そして、スペーサ１４の左端に形成された斜面１４ｂを
金属軸７の右端に形成された斜面７ｂと係合させ、金属
軸７のフランジ７ａとスペーサ１４のフランジ１４Ｃと
を締結ボルト８で締結している。また、フランジ７ａ螺
入された調節ボルト１１をフランジ１４ｃを貫通させて
その先端でスペーサ４を押推するようにしている。他の
構成は第１図に示す第１の実施例と同様であり、対応す
る部材には同じ符号が付されている。Then, the slope 14b formed on the left end of the spacer 14 is engaged with the slope 7b formed on the right end of the metal shaft 7, and the flange 7a of the metal shaft 7 and the flange 14C of the spacer 14 are fastened with the fastening bolt 8. There is. Further, the adjustment bolt 11 screwed into the flange 7a is passed through the flange 14c so that the spacer 4 is pushed with its tip. The rest of the structure is the same as that of the first embodiment shown in FIG. 1, and corresponding members are given the same reference numerals.
（発明の効果）
本発明においては、セラミックからなる羽根車のテーパ
状の取付穴内にそのテーパ面がセラミックからなる軸の
外周に設けた突起に向って先細となるように上記軸を貫
通させ、上記軸に摺動自在に嵌合されたテーパピースを
その背後から上記軸に嵌合された伸１１継手付スペーサ
で上記突起に向って押推することによりテーパピースの
外周に形成された先細のテーパ面を上記羽根車の取付穴
のテーパ面に係合せしめたため、テーパピースはにペー
サの伸縮継手の弾発力によって軸方向に押推され、テー
パピースの外周の先細のテーパ面は羽根車の取付穴のテ
ーパ面に常時係合する。従って、羽根車を高温下で高速
回転させても羽根車の取付穴の間隙はテーパピースによ
って吸収され、従って、羽根車は軸に強固、かつ、緊密
に安定し、て結合される。か（して、従来のもののよう
にナンドの弛みやねじの破損により羽根車が振動するこ
とはないので、安全に運転することができる。(Effects of the Invention) In the present invention, the shaft is passed through the tapered mounting hole of the impeller made of ceramic so that the tapered surface thereof tapers toward the protrusion provided on the outer periphery of the shaft made of ceramic, A tapered surface is formed on the outer periphery of the taper piece by pushing the taper piece slidably fitted to the shaft from behind toward the protrusion with a spacer with an expansion 11 joint fitted to the shaft. is engaged with the tapered surface of the impeller's mounting hole, the tapered piece is pushed in the axial direction by the elastic force of the expansion joint of the pacer, and the tapered surface of the outer periphery of the tapered piece engages with the tapered surface of the impeller's mounting hole. Always engages with the tapered surface. Therefore, even if the impeller is rotated at high speed under high temperature, the gap between the mounting holes of the impeller is absorbed by the taper piece, and therefore the impeller is firmly, tightly and stably connected to the shaft. (The impeller does not vibrate due to loosening of the NAND or damage to the screws, unlike in conventional models, so it can be operated safely.)
第１図ないし第３図は本発明の第１の実施例を示し、第
１図は部分的縦断面図、第２図は第１図のト」線に沿う
部分的横断面図、第３図は第１図の■−ｍ線に沿う横断
面図である。第４図は本発明の第２の実施例を示す部分
的縦断面図である。
第５図及び第６図は本発明の第３の実施例を示し、第５
図は部分的縦断面図、第６図は第５図の■−■線に沿う
部分的矢視図である。第７図は従来の取付構造を示す部
分的縦断面図である。
羽根車−４、取付穴−１ａｓ軸−・−２、突起−・−２
ａ苑４図1 to 3 show a first embodiment of the present invention, in which FIG. 1 is a partial longitudinal cross-sectional view, FIG. 2 is a partial cross-sectional view taken along line T in FIG. 1, and FIG. The figure is a cross-sectional view taken along line -m in FIG. 1. FIG. 4 is a partial vertical sectional view showing a second embodiment of the invention. 5 and 6 show a third embodiment of the present invention;
The figure is a partial vertical cross-sectional view, and FIG. 6 is a partial view taken along the line ■-■ in FIG. 5. FIG. 7 is a partial vertical sectional view showing a conventional mounting structure. Impeller-4, mounting hole-1as axis--2, protrusion--2
A-en 4
Claims (1)
テーパ面がセラミックからなる軸の外周に設けた突起に
向って先細となるように上記軸を貫通させ、上記軸に摺
動自在に嵌合されたテーパピースをその背後から上記軸
に嵌合された伸縮継手付スペーサで上記突起に向って押
推することによりテーパピースの外周に形成された先細
のテーパ面を上記羽根車の取付穴のテーパ面に係合せし
めたことを特徴とするセラミック製羽根車の取付構造。The shaft is passed through the tapered mounting hole of the impeller made of ceramic so that its tapered surface tapers toward the protrusion provided on the outer periphery of the shaft made of ceramic, and the impeller is slidably fitted into the shaft. By pushing the tapered piece toward the protrusion from behind with a spacer with an expansion joint fitted to the shaft, the tapered surface formed on the outer periphery of the tapered piece is aligned with the tapered surface of the mounting hole of the impeller. A mounting structure for ceramic impellers that is characterized by engagement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9441086A JPS62251401A (en) | 1986-04-25 | 1986-04-25 | Mounting structure for ceramic made impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9441086A JPS62251401A (en) | 1986-04-25 | 1986-04-25 | Mounting structure for ceramic made impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62251401A true JPS62251401A (en) | 1987-11-02 |
Family
ID=14109472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9441086A Pending JPS62251401A (en) | 1986-04-25 | 1986-04-25 | Mounting structure for ceramic made impeller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62251401A (en) |
-
1986
- 1986-04-25 JP JP9441086A patent/JPS62251401A/en active Pending
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