JPS6217418A - Method of fitting wear-resisting sleeve - Google Patents
Method of fitting wear-resisting sleeveInfo
- Publication number
- JPS6217418A JPS6217418A JP15395885A JP15395885A JPS6217418A JP S6217418 A JPS6217418 A JP S6217418A JP 15395885 A JP15395885 A JP 15395885A JP 15395885 A JP15395885 A JP 15395885A JP S6217418 A JPS6217418 A JP S6217418A
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- sleeve
- wear
- concentricity
- resisting sleeve
- 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
Landscapes
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は耐摩耗性と耐食性とを同時に要求される回転軸
の摺動部の耐摩耗性スリーブ取付方法に係り、特に海水
ポンプ等腐食性流体を取扱う機械に好適な耐摩耗性スリ
ーブの取付方法に関する。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a method for attaching a wear-resistant sleeve to a sliding part of a rotating shaft, which requires both wear resistance and corrosion resistance, and is particularly applicable to corrosive fluids such as seawater pumps. The present invention relates to a method of attaching a wear-resistant sleeve suitable for a machine that handles the wear-resistant sleeve.
海水など腐食性流体を取扱うポンプの軸材にはオーステ
ナイト系ステンレス鋼のように比較的低硬度の耐摩耗性
の劣る材料が使用されるので、摺動部に耐摩耗性にすぐ
れたスリーブを取付けることが多い、しかしスリーブに
はセラミックスなど強度、靭性に劣る材料を用いること
が多いため、軸とスリーブのかん合部を諦りばめにする
ことは困難で、通常キーなどを用いたとまりばめとなる
ことが多い。The shaft material of pumps that handle corrosive fluids such as seawater uses materials such as austenitic stainless steel with relatively low hardness and poor wear resistance, so a sleeve with excellent wear resistance is installed on the sliding part. However, since the sleeve is often made of a material with poor strength and toughness such as ceramics, it is difficult to make a perfect fit between the shaft and the sleeve, and it is usually difficult to make a perfect fit using a key etc. This is often the case.
そのため、軸とスリーブの間にギャップが生じ(これは
経時的な摩耗によって助長される)このギャップはその
まま回転不釣合いとなるから、軸振動の増加をひきおこ
すことになる。Therefore, a gap is created between the shaft and the sleeve (this gap is exacerbated by wear over time), and this gap directly causes rotational imbalance, resulting in an increase in shaft vibration.
軸振動の増加により、摺動面やかん合部の摩耗が助長さ
れ、最終的には回転体の溜積にいたることがある。なお
、この種のスリーブとして関連するものに例えば特開昭
59−29814号がある。The increase in shaft vibration accelerates the wear of sliding surfaces and mating parts, which may eventually lead to accumulation of rotating bodies. A related example of this type of sleeve is, for example, Japanese Patent Application Laid-open No. 59-29814.
本発明の目的は耐摩耗性と耐食性を兼備しかつ回転振動
の発生しにくい耐摩耗性スリーブを提供することにある
。An object of the present invention is to provide a wear-resistant sleeve that has both wear resistance and corrosion resistance and is less likely to cause rotational vibration.
本発明は、軸とスリーブのかん合部の軸直角断面形状を
ポリゴン形状(おむすび形状)とすることにより、締ま
りばめでないにもかかわらず、自動詞心作用があるため
、軸とスリーブとに同心度が確保されるようにするよう
にするものである。In the present invention, by making the cross-sectional shape perpendicular to the axis of the shaft-sleeve mating part polygonal (rice ball shape), there is an intransitive centering effect even though it is not an interference fit, so that the shaft and sleeve are concentric. The aim is to ensure that the degree of
これにより軸振動の増加やそれに併なう異常摩耗を防止
することができる。This makes it possible to prevent an increase in shaft vibration and the accompanying abnormal wear.
以下、本発明の一実施例を第1図により説明する。本実
施例はロータ1.インペラ5を有する軸2を軸受4によ
って支持する構造になっている。An embodiment of the present invention will be described below with reference to FIG. In this embodiment, rotor 1. It has a structure in which a shaft 2 having an impeller 5 is supported by a bearing 4.
軸受部のA−A断面を第2図に示す、軸2とスリーブ3
はポリゴン断面でがん合しており、がん合はすき間ばめ
であるため、間隙を生じるが1回転方向に相互にΔθだ
け回転した状態で軸心○に対して同心度を保つことがで
きる。The shaft 2 and sleeve 3 are shown in Fig. 2, which shows the A-A cross section of the bearing part.
are tightly connected in the polygon cross section, and since the tight fit is a clearance fit, a gap is created, but concentricity with respect to the axis ○ can be maintained while mutually rotated by Δθ in one rotation direction. .
本例では軸2の材質がオーイテナイト系のステンレス鋼
、スリーブ3はセラミックスである。前者は強度が低く
、後者は靭性が低く、キーなどによる締結は破損のおそ
れがあるが、ポリゴン断面の継手では強度向上の効果も
大きい。In this example, the shaft 2 is made of oitenitic stainless steel, and the sleeve 3 is made of ceramics. The former has low strength, and the latter has low toughness, and there is a risk of damage if fastened with a key, etc., but a joint with a polygon cross section has a large effect of improving strength.
本発明によれば、締りばめにすることなく、軸とスリー
ブとの同心度を確保することができるので、振動低減お
よび軸の摩耗を低減することができる。According to the present invention, concentricity between the shaft and the sleeve can be ensured without interference fit, so vibrations and wear of the shaft can be reduced.
また締りばめやキー継手の場合にはスリーブや軸の強度
低下をおこすが、本発明のようにポリゴン断面の場合に
は強度低下が少なく、特にセラミックスのスリーブを使
用する場合に有効である。In addition, in the case of an interference fit or a key joint, the strength of the sleeve and shaft is reduced, but in the case of a polygonal cross section as in the present invention, the reduction in strength is small, and this is particularly effective when using a ceramic sleeve.
第1図は本発明の実施例の断面図、第2図は第1図のA
−A線断面図である。
1・・・ロータ、2・・・軸、3・・・スリーブ、4・
・・軸受、5・・・インペラ。Figure 1 is a sectional view of an embodiment of the present invention, and Figure 2 is A of Figure 1.
-A sectional view. 1... Rotor, 2... Shaft, 3... Sleeve, 4...
... Bearing, 5... Impeller.
Claims (1)
なる軸の摺動部において、軸外面とスリーブの内面のか
ん合面の軸直角断面形状をポリゴン形状としたことを特
徴とする耐摩耗性スリーブ取付方法。In the sliding part of the shaft, which consists of a shaft body and a wear-resistant sleeve mated to the outer surface of the shaft, the shaft-perpendicular cross-sectional shape of the mating surface between the shaft outer surface and the inner surface of the sleeve is polygonal. How to install the sex sleeve.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15395885A JPS6217418A (en) | 1985-07-15 | 1985-07-15 | Method of fitting wear-resisting sleeve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15395885A JPS6217418A (en) | 1985-07-15 | 1985-07-15 | Method of fitting wear-resisting sleeve |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6217418A true JPS6217418A (en) | 1987-01-26 |
Family
ID=15573787
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15395885A Pending JPS6217418A (en) | 1985-07-15 | 1985-07-15 | Method of fitting wear-resisting sleeve |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6217418A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01258981A (en) * | 1988-04-08 | 1989-10-16 | Canon Inc | Material to be recorded and recording method using the same |
-
1985
- 1985-07-15 JP JP15395885A patent/JPS6217418A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01258981A (en) * | 1988-04-08 | 1989-10-16 | Canon Inc | Material to be recorded and recording method using the same |
JP2614264B2 (en) * | 1988-04-08 | 1997-05-28 | キヤノン株式会社 | Recording medium and recording method using the same |
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