JP2001247093A - Ship propeller and separating method from its propeller shaft - Google Patents

Ship propeller and separating method from its propeller shaft

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Publication number
JP2001247093A
JP2001247093A JP2000388270A JP2000388270A JP2001247093A JP 2001247093 A JP2001247093 A JP 2001247093A JP 2000388270 A JP2000388270 A JP 2000388270A JP 2000388270 A JP2000388270 A JP 2000388270A JP 2001247093 A JP2001247093 A JP 2001247093A
Authority
JP
Japan
Prior art keywords
diameter portion
propeller
small
diameter
oil groove
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
Application number
JP2000388270A
Other languages
Japanese (ja)
Inventor
勲 ▲高▼澤
Isao Takazawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TAKAZAWA SEISAKUSHO KK
Original Assignee
TAKAZAWA SEISAKUSHO KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by TAKAZAWA SEISAKUSHO KK filed Critical TAKAZAWA SEISAKUSHO KK
Priority to JP2000388270A priority Critical patent/JP2001247093A/en
Publication of JP2001247093A publication Critical patent/JP2001247093A/en
Pending legal-status Critical Current

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  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a ship propeller capable of easily removing the propeller having a recess part from a propeller shaft. SOLUTION: In this propeller 1 fitted to a taper part of the propeller shaft of a ship, an inner peripheral surface of the propeller is divided into a large diameter part 6, the recess part 8 and a small diameter part 7 in the shaft direction. A large diameter part oil groove 2 extening in the circumferential direction is arranged in the large diameter part, and a small diameter part oil groove 3 extending in the circumferential direction is arranged in the small diameter part.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、船舶用プロペラ軸
に嵌め合わされるプロペラに関し、特に、プロペラ軸か
らの取り外しが容易なプロペラおよびプロペラのプロペ
ラ軸からの離脱方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a propeller fitted to a marine propeller shaft, and more particularly to a propeller that can be easily removed from a propeller shaft and a method of detaching the propeller from the propeller shaft.

【０００２】[0002]

【従来の技術】船舶のエンジンの動力はプロペラ軸に回
転運動として伝達され、このプロペラ軸に嵌め合わされ
るプロペラの水中での回転によって、船舶は推進力を得
る。プロペラ軸は嵌め合わせ部においてテーパが付けら
れており、プロペラ内周面もこのテーパに適合するよう
にテーパを有している。プロペラはプロペラ軸の軸方向
に沿って嵌め入れられ、軸方向の力を付加されて密着面
法線方向の力を及ぼしあうまで押し込まれる。プロペラ
がプロペラ軸から離脱しないように、軸に平行に差し込
まれる１本のキーをプロペラ内周面とプロペラ軸外周面
との両方で受け入れるように、それぞれにキーの部分溝
を設け、キーを挿入する場合もある。プロペラ軸からプ
ロペラへの回転動力の伝達は上記の互いに密着する密着
面の摩擦力によって行われる。このような状態で使用す
ると、使用中に強い固着力がプロペラ内周面とプロペラ
軸外周面との間に形成され、両者を容易に分離すること
ができなくなる。2. Description of the Related Art The power of an engine of a ship is transmitted to a propeller shaft as a rotational motion, and the ship obtains propulsion by the rotation of a propeller fitted on the propeller shaft in water. The propeller shaft is tapered at the fitting portion, and the inner peripheral surface of the propeller is also tapered so as to conform to the taper. The propeller is fitted along the axial direction of the propeller shaft, and is pushed in until an axial force is applied to exert a force in the normal direction of the contact surface. To prevent the propeller from being detached from the propeller shaft, provide a key partial groove for each key so that one key inserted parallel to the shaft is received by both the inner peripheral surface of the propeller and the outer peripheral surface of the propeller shaft. In some cases. Transmission of the rotational power from the propeller shaft to the propeller is performed by the frictional force of the above-mentioned closely contacting surfaces. When used in such a state, a strong fixing force is formed between the inner peripheral surface of the propeller and the outer peripheral surface of the propeller shaft during use, and the two cannot be easily separated.

【０００３】このため、プロペラに油口を設けて、かつ
プロペラ内周面に上記油口に通じる油溝を周方向に沿っ
て設け、油口に油圧をかけることによりプロペラを膨張
させて、プロペラをプロペラ軸から取り外す方法が採用
されてきた。この方法により、手動式油圧ポンプにより
油圧をかけ、プロペラをプロペラ軸から容易に取り外す
ことができる。[0003] Therefore, an oil port is provided in the propeller, and an oil groove communicating with the oil port is provided in the inner peripheral surface of the propeller along the circumferential direction, and the propeller is expanded by applying hydraulic pressure to the oil port. A method has been adopted in which the shaft is removed from the propeller shaft. With this method, hydraulic pressure can be applied by a manual hydraulic pump, and the propeller can be easily removed from the propeller shaft.

【０００４】[0004]

【発明が解決しようとする課題】しかしながら、小型船
舶を中心に、上記したように、プロペラ軸とプロペラと
の脱落防止のためにキー溝を設ける場合、問題を生じ
る。このキー溝は、軸に平行に差し込まれる１本のキー
をプロペラ内周面とプロペラ軸外周面との両方で受け入
れるように、それぞれにキーの部分溝が設けられる。こ
のような場合、従来の全周にわたって設けられる上記の
油溝では、キー溝と交差するので、キー溝により圧力が
抜けてしまい、プロペラをプロペラ軸から取り外すこと
ができない。このため、キー溝が設けられている場合で
も、小型油圧ポンプ等により簡便にプロペラをプロペラ
軸から外す方法の開発が望まれていた。However, as described above, a problem arises when a keyway is provided to prevent the propeller shaft and the propeller from falling off, mainly in a small boat. Each of the key grooves is provided with a key partial groove so that one key inserted parallel to the shaft is received by both the inner peripheral surface of the propeller and the outer peripheral surface of the propeller shaft. In such a case, in the above-described oil groove provided over the entire circumference in the related art, since the key groove intersects with the key groove, pressure is released by the key groove, and the propeller cannot be removed from the propeller shaft. Therefore, it has been desired to develop a method for easily removing the propeller from the propeller shaft using a small hydraulic pump or the like even when the key groove is provided.

【０００５】また、近年、上記テーパ加工における加工
精度を緩和するために、上記プロペラ内面にぬすみを設
けることが奨励されている。ぬすみがない場合には、プ
ロペラ軸とプロペラとの密着した嵌合せを実現するため
には、きわめて高い加工精度を必要とする。このため、
高精度の加工装置や加工時間の延長を要し、高価格のプ
ロペラとなってしまう。また、何らかの原因でわずかの
くるいが生じた場合には、プロペラのプロペラ軸への取
り付けや取り外しに、甚大な労力と時間を要する事態と
なる。ぬすみ部があるプロペラでは、くるいが小さけれ
ば比較的小さな労力で取り外しや取り付けが可能とな
る。したがって、上記のプロペラを簡便にプロペラ軸か
ら取り外す方法または構造の開発は、ぬすみ部を設けた
プロペラについて実現されなければならない。[0005] In recent years, in order to ease the processing accuracy in the taper processing, it is recommended to provide a slack on the inner surface of the propeller. In the case where there is no looseness, extremely high processing accuracy is required in order to achieve close fitting of the propeller shaft and the propeller. For this reason,
It requires high-precision processing equipment and prolonged processing time, resulting in a high-priced propeller. Further, if a slight curl occurs for some reason, it takes a lot of labor and time to attach and remove the propeller to and from the propeller shaft. In a propeller having a slim part, if the wed is small, it can be removed and attached with relatively little effort. Therefore, the development of a method or structure for easily removing the propeller from the propeller shaft must be realized for a propeller provided with a slack portion.

【０００６】そこで、本発明は、テーパ加工精度の緩和
をもたらすぬすみ部があるプロペラの場合に、簡便にプ
ロペラをプロペラ軸から外すことができる船舶用プロペ
ラおよびそのプロペラ軸からの離脱方法を提供すること
を目的とする。Accordingly, the present invention provides a marine propeller and a method for detaching the propeller from the propeller shaft, in which the propeller can be easily removed from the propeller shaft in the case of a propeller having a slack portion that reduces the tapering accuracy. The purpose is to:

【０００７】[0007]

【課題を解決するための手段】本発明の請求項１の船舶
用プロペラは、船舶のプロペラ軸のテーパ部に嵌め合わ
されるプロペラであり、該プロペラの内周面が、軸方向
に、大径部と、ぬすみ部分と、小径部とに区分され、大
径部に周方向に延びる大径部油溝、および小径部に周方
向に延びる小径部油溝が設けられている。A marine propeller according to a first aspect of the present invention is a propeller fitted into a tapered portion of a propeller shaft of a marine vessel, and the inner peripheral surface of the propeller has a large diameter in an axial direction. A large-diameter portion oil groove extending in the circumferential direction is provided in the large-diameter portion, and a small-diameter oil groove extending in the circumferential direction is provided in the small-diameter portion.

【０００８】ぬすみ部を挟んで形成されている大径部と
小径部とに各々油溝を設けることにより、ぬすみ部の両
側で嵌合されて密着している部分をプロペラ軸からそれ
ぞれ簡便に分離させ、プロペラを外すことができる。[0008] By providing an oil groove in each of the large diameter portion and the small diameter portion formed with the sunk portion interposed therebetween, the portions fitted and closely contacted on both sides of the sunk portion can be easily separated from the propeller shaft. And remove the propeller.

【０００９】請求項２の船舶用プロペラでは、請求項１
の船舶用プロペラにおいて、大径部油溝が内周面に周角
度１７０°〜２７０°の範囲内に設けられ、小径部油溝
が内周面に周角度１７０°〜２７０°の範囲内に設けら
れている。According to the marine propeller of claim 2, claim 1 is
In the marine propeller, the large-diameter portion oil groove is provided on the inner peripheral surface in a range of a circumferential angle of 170 ° to 270 °, and the small-diameter portion oil groove is provided on the inner peripheral surface in a range of a circumferential angle of 170 ° to 270 °. Is provided.

【００１０】上記の構成により、キー溝があってもキー
溝を避けて油溝を設けることができるので、小型油圧ポ
ンプにより油圧を上げてプロペラ内面を膨張させること
により、プロペラをプロペラ軸から外すことができる。
なお、上記の油溝はキー溝がある場合には、キー溝を避
けるように配置される。通常、油溝は、中央軸線を挟ん
でキー溝に対向する周位置に油溝の中央部を合わせて周
方向に対称に配置される。大径部および小径部とも、１
７０°よりも周角度が小さいとプロペラが外れないうち
にぬすみ部またはそれぞれ上下端に油が抜けてしまい、
また、２７０°より大きいとプロペラが外れないうちに
キー溝に油が抜けてしまう。大径部または小径部でプロ
ペラがプロペラ軸から外れた状態とは、プロペラ内周面
とプロペラ軸外周面との間に密着している部分がなく、
軸方向に平行な応力により簡単にプロペラとプロペラ軸
とをずらすことができる状態を指す。With the above structure, even if there is a key groove, the oil groove can be provided avoiding the key groove. Therefore, the propeller is detached from the propeller shaft by increasing the oil pressure by a small hydraulic pump to expand the inner surface of the propeller. be able to.
The oil groove is arranged so as to avoid the key groove when there is a key groove. Normally, the oil groove is arranged symmetrically in the circumferential direction with the center of the oil groove being aligned with the circumferential position facing the key groove with respect to the central axis. 1 for both large diameter and small diameter
If the circumferential angle is smaller than 70 °, oil will come off at the slack part or upper and lower ends before the propeller comes off,
On the other hand, if it is larger than 270 °, oil escapes from the keyway before the propeller comes off. The state where the propeller is off the propeller shaft at the large diameter portion or the small diameter portion means that there is no portion that is in close contact between the inner peripheral surface of the propeller and the outer peripheral surface of the propeller shaft,
A state in which the propeller and the propeller shaft can be easily shifted by a stress parallel to the axial direction.

【００１１】請求項３の船舶用プロペラでは、請求項１
に記載のプロペラにおいて、大径部油溝が内周面に周角
度１７０°〜２００°の範囲内に設けられ、小径部油溝
が内周面に周角度２３０°〜２７０°の範囲内に設けら
れている。According to the third aspect of the present invention, there is provided a marine propeller.
In the propeller described in the above, the large-diameter portion oil groove is provided on the inner peripheral surface in a range of a circumferential angle of 170 ° to 200 °, and the small-diameter portion oil groove is formed on the inner peripheral surface in a range of a circumferential angle of 230 ° to 270 °. Is provided.

【００１２】大径部の周角度が１７０°より小さい場合
または小径部の周角度が２３０°より小さい場合には、
プロペラが外れる前にそれぞれ油が上端または下端に抜
けてしまう。また、大径部の周角度が２００°より大き
い場合または小径部の周角度が２７０°より大きい場合
には、両方ともプロペラが外れる前に油がキー溝に抜け
てしまう。また、小径部と大径部との油溝の周角度に差
をつけ、小径部の油溝の周角度を大きくするのは、小径
部と大径部とを同じタイミングで外すためである。When the circumferential angle of the large diameter portion is smaller than 170 ° or when the circumferential angle of the small diameter portion is smaller than 230 °,
Oil escapes to the top or bottom before the propeller comes off, respectively. In addition, when the circumferential angle of the large diameter portion is greater than 200 ° or when the circumferential angle of the small diameter portion is greater than 270 °, oil leaks into the keyway before the propeller comes off. The reason why the circumferential angle of the oil groove between the small diameter portion and the large diameter portion is made different and the circumferential angle of the oil groove at the small diameter portion is increased is to remove the small diameter portion and the large diameter portion at the same timing.

【００１３】請求項４の船舶用プロペラでは、請求項１
の船舶用プロペラにおいて、大径部油溝の周角度が、小
径部油溝の周角度よりも小さい。In the marine propeller according to the fourth aspect, the first aspect of the present invention provides a marine propeller.
In the marine propeller, the circumferential angle of the large-diameter portion oil groove is smaller than the circumferential angle of the small-diameter portion oil groove.

【００１４】小径部のほうが大径部よりも剛性は高い。
したがって、１台の油圧ポンプから２本の油圧ホースを
分岐させて大径部と小径部とに油圧をかける場合、両方
に同じ油圧がかかるので、小径部と大径部との両方で同
じタイミングでプロペラを外すためには、小径部の油溝
の周角度を大径部よりも大きくする。同じタイミングで
外す必要があるのは、１台のポンプで油圧をかける場
合、どちらか先に油が抜けてしまうと、残った方に油圧
がかからず、プロペラが外れなくなるからである。The small diameter portion has higher rigidity than the large diameter portion.
Therefore, when two hydraulic hoses are branched from one hydraulic pump and hydraulic pressure is applied to the large-diameter portion and the small-diameter portion, the same hydraulic pressure is applied to both, so the same timing is applied to both the small-diameter portion and the large-diameter portion. In order to remove the propeller, the circumferential angle of the oil groove in the small diameter portion is made larger than that in the large diameter portion. The reason why it is necessary to remove the propellers at the same timing is that when oil pressure is applied by one pump, if oil escapes first, oil pressure will not be applied to the remaining one and the propeller will not come off.

【００１５】請求項５の船舶用プロペラでは、請求項１
〜４のいずれかのプロペラにおいて、大径部の軸方向長
さをＬ1、小径部の長さをＬ3とするとき、大径部油溝の
位置は大径部で径が最も大きい上端から０．５４Ｌ1〜
０．６０Ｌ1の範囲内に位置し、小径部油溝の位置は小
径部で径が最も小さい下端から０．５４Ｌ3〜０．６０
Ｌ3の範囲内に位置する。According to a fifth aspect of the present invention, there is provided a marine propeller.
In any of the propellers 1 to 4, when the axial length of the large-diameter portion is L1 and the length of the small-diameter portion is L3, the position of the large-diameter oil groove is 0 from the upper end having the largest diameter in the large-diameter portion. .54L1 ~
It is located within the range of 0.60 L1, and the position of the small diameter portion oil groove is 0.54 L3 to 0.60 from the lower end where the diameter is the smallest in the small diameter portion.
It is located within the range of L3.

【００１６】大径部油溝の位置が、上端から０．５４Ｌ
1より小さいと大径部でプロペラが外れる前に上端に油
が抜けてしまい、大径部でプロペラを外すことができな
い。また、上端から０．６０Ｌ1より大きいと、大径部
でプロペラを外す前に、ぬすみ部に油が抜けてしまう。
小径部でも、同様であり、小径部油溝の位置が下端から
０．５４Ｌ3〜より短いと、小径部でプロペラが軸から
外れる前に油が下端に抜けてしまい、０．６０Ｌ3より
長いとぬすみ部に油が抜けてしまう。The position of the large-diameter portion oil groove is 0.54 L from the upper end.
If it is smaller than 1, the oil will escape to the upper end before the propeller comes off at the large diameter part, and the propeller cannot be removed at the large diameter part. On the other hand, if it is larger than 0.60 L1 from the upper end, the oil will escape from the slack portion before the propeller is removed from the large diameter portion.
The same applies to the small-diameter portion. If the position of the small-diameter portion oil groove is shorter than 0.54 L3 from the lower end, the oil will come off to the lower end before the propeller is disengaged from the shaft at the small-diameter portion. Oil comes out of the part.

【００１７】請求項６の船舶用プロペラでは、請求項１
〜５のいずれかのプロペラにおいて、大径部の軸方向長
さをＬ1、ぬすみ部分の長さをＬ2、小径部の長さをＬ3
とするとき、Ｌ1: Ｌ2: Ｌ3＝（１．８〜２．０）:１:
（１．０〜１．２）の範囲内にあるようにする。According to the sixth aspect of the present invention, there is provided a marine propeller.
5, the axial length of the large diameter portion is L1, the length of the slack portion is L2, and the length of the small diameter portion is L3.
, L1: L2: L3 = (1.8 to 2.0): 1:
(1.0 to 1.2).

【００１８】ぬすみ部の軸方向の長さを１として、Ｌ1
を１．８未満とすると、プロペラが外れる前に大径部油
溝では上端に油が抜けてしまい、２．０を超えるとぬす
み部側に油が抜ける。また、ぬすみ部の軸方向の長さを
１として、Ｌ3が１．０未満では、プロペラが外れる前
に小径部油溝ではぬすみ部側に油が抜けてしまい、また
１．２を超えると径が小さい方の下端から油が抜けてし
まう。Assuming that the axial length of the sunk portion is 1, L1
If the value is less than 1.8, the oil will escape to the upper end in the large diameter portion oil groove before the propeller comes off, and if it exceeds 2.0, the oil will escape to the squeezed portion side. When the axial length of the squeezed portion is 1 and L3 is less than 1.0, the oil escapes to the sunk portion in the small-diameter portion oil groove before the propeller comes off. The oil comes off from the lower end of the smaller.

【００１９】請求項７の船舶用プロペラでは、請求項１
〜６のいずれかのプロペラにおいて、内周面にはテーパ
が付けられ、そのテーパが、１／１６〜１／１０（角度
１．７９〜２．８６°°）の範囲内にある。According to the marine propeller of claim 7, claim 1 is
In any of the propellers of Nos. 1 to 6, the inner peripheral surface is tapered, and the taper is in the range of 1/16 to 1/10 (angle 1.79 to 2.86 °).

【００２０】テーパが１／１６（角度１．７９°）より
小さいとプロペラの嵌め合せにも、プロペラを抜く場合
にも、大きな力を要す。また、加工も高精度を要する。
一方、テーパが１／１０（角度２．８６°）より大きい
と、プロペラが脱離する場合がある。If the taper is smaller than 1/16 (the angle of 1.79 °), a large force is required both when fitting the propeller and when removing the propeller. Processing also requires high precision.
On the other hand, if the taper is larger than 1/10 (angle 2.86 °), the propeller may be detached.

【００２１】請求項８の船舶用プロペラでは、請求項１
〜７のいずれかのプロペラにおいて、内周面にきさげ模
様が施されている。In the marine propeller according to the eighth aspect, the first aspect of the present invention provides a marine propeller.
In any of the propellers of Nos. 1 to 7, the inner peripheral surface has a cut pattern.

【００２２】上記の油溝からきさげ加工の微細溝を伝っ
て油が薄くプロペラ内面に広がってゆき、きさげ模様が
ない場合に比べて低い油圧によってプロペラを外すこと
が可能となる。The oil spreads thinly from the oil groove to the inner surface of the propeller through the fine groove of the knurling, and the propeller can be removed with a lower oil pressure than when there is no knurling pattern.

【００２３】請求項９の船舶用プロペラでは、請求項１
〜５、７のいずれかのプロペラにおいて、大径部の軸方
向長さをＬ1、ぬすみ部分の長さをＬ2、小径部の長さを
Ｌ3とするとき、Ｌ1: Ｌ2: Ｌ3＝（０．８〜１．２）：
１：（０．８〜１．２）の範囲内にある。According to the ninth aspect of the present invention, there is provided a marine propeller.
In any one of the propellers Nos. 5 to 7, when the axial length of the large diameter portion is L1, the length of the slim portion is L2, and the length of the small diameter portion is L3, L1: L2: L3 = (0. 8 to 1.2):
1: Within the range of (0.8 to 1.2).

【００２４】大径部と小径部に別々に油圧を加える場合
には、小径部の油圧を大径部よりも高くすることができ
る。このため、軸方向の長さによって剛性を調節しなく
ても、圧力そのものに差をつけて油圧を加えることによ
り、大径部と小径部との径拡大の変化を容易に制御する
ことができる。このため、大径部、ぬすみ部分、小径部
の軸方向の長さを同じにして、ぬすみ部を大きくとるこ
とができ、加工精度を緩和することができる。When hydraulic pressure is separately applied to the large diameter portion and the small diameter portion, the hydraulic pressure of the small diameter portion can be made higher than that of the large diameter portion. For this reason, even if the rigidity is not adjusted by the length in the axial direction, the change in the diameter expansion between the large diameter portion and the small diameter portion can be easily controlled by applying the hydraulic pressure with a difference in the pressure itself. . Therefore, the large-diameter portion, the slack portion, and the small-diameter portion have the same axial length, so that the slack portion can be made large and the processing accuracy can be reduced.

【００２５】本発明の請求項１０の船舶用プロペラのプ
ロペラ軸からの離脱方法は、船舶のプロペラ軸のテーパ
部に嵌め合わされ、その内周面が、軸方向に、大径部
と、ぬすみ部分と、小径部とに区分され、大径部に大径
部油溝、また小径部に小径部油溝を備えているプロペラ
のプロペラ軸からの離脱方法である、この離脱方法で
は、大径部油溝と小径部油溝とに油圧を与え離脱するに
あたり、大径部油溝よりも小径部油溝に高圧の油圧がか
かるように油を供給する。According to a tenth aspect of the present invention, in the method for detaching a marine propeller from a propeller shaft, the marine propeller is fitted to a tapered portion of a propeller shaft of a marine vessel, and an inner peripheral surface thereof has a large-diameter portion and a slack portion in an axial direction. And a small-diameter portion, and a large-diameter portion has a large-diameter oil groove and a small-diameter portion has a small-diameter oil groove. This is a method for separating a propeller from a propeller shaft. In applying the oil pressure to the oil groove and the small-diameter oil groove and separating them, the oil is supplied so that a higher oil pressure is applied to the small-diameter oil groove than to the large-diameter oil groove.

【００２６】大径部と小径部との径拡大の変形の均衡を
とるにあたり、両者の軸方向の長さの調節をしない場合
には、上記の離脱方法のように、剛性の高い小径部によ
り高い圧力を付加する。このため、小径部の離脱ととも
にプロペラはプロペラ軸から一気に大きなずれ（離脱距
離）をもって離脱する。このため、手作業による労力負
担を大幅に軽減することができる。In balancing the deformation of the large-diameter portion and the small-diameter portion with the enlargement of the diameter, if the axial length of the two is not adjusted, the small-diameter portion having a high rigidity is used as in the above-described separation method. Apply high pressure. For this reason, the propeller separates from the propeller shaft with a large deviation (separation distance) at a stretch as the small diameter portion separates. Therefore, the labor burden due to manual work can be significantly reduced.

【００２７】請求項１１の船舶用プロペラのプロペラ軸
からの離脱方法では、請求項１０の方法において、大径
部油溝と小径部油溝とに油を供給し、大径部油溝の油圧
が所定値に達したとき、大径部油溝への油の供給を停止
し、小径部油溝への油の供給を、より高圧の所定値にな
るまで続ける。According to the eleventh aspect, in the method for detaching a marine propeller from a propeller shaft, oil is supplied to the large-diameter oil groove and the small-diameter oil groove, and the hydraulic pressure of the large-diameter oil groove is increased. When the pressure reaches a predetermined value, the supply of oil to the large-diameter oil groove is stopped, and the supply of oil to the small-diameter oil groove is continued until a higher pressure reaches a predetermined value.

【００２８】上記構成により、プロペラを特別な構造に
しなくても、簡便な手順で小径部の離脱とともに一気に
大きなずれ（離脱距離）をもってプロペラをプロペラ軸
から離脱させることができる。なお、所定の油圧とは、
嵌め合い端から油がにじみ出る油圧、経験的に求めた圧
力の数値などが該当する。この所定の油圧において、大
径部はプロペラ軸から離脱寸前の状態にあるが、小径部
が嵌め合い状態にあるため、プロペラ軸と大径部との間
に油漏れが生じるほどの隙間が生じていない。したがっ
て、小径部が離脱すると、テーパに沿って大径部および
小径部ともに一気にプロペラ軸に沿って離脱方向のずれ
が生じる。With the above configuration, the propeller can be detached from the propeller shaft with a large displacement (separation distance) at a stroke together with the detachment of the small diameter portion by a simple procedure without a special structure of the propeller. The predetermined oil pressure is
The oil pressure from which the oil oozes from the mating end, the numerical value of the empirically determined pressure, and the like correspond. At this predetermined oil pressure, the large-diameter portion is in a state before being separated from the propeller shaft, but since the small-diameter portion is in a fitted state, a gap is generated between the propeller shaft and the large-diameter portion such that oil leakage occurs. Not. Therefore, when the small-diameter portion separates, both the large-diameter portion and the small-diameter portion are displaced along the taper at a stretch along the propeller axis.

【００２９】請求項１２の船舶用プロペラのプロペラ軸
からの離脱方法では、大径部油溝に油圧を与える大径部
油圧路と、小径部油溝に油圧を与える小径部油圧路と、
大径部油圧路において油の流通を開閉する開閉弁を備え
る油圧ポンプを用い、大径部側の嵌め合い端に油がにじ
み出たときに、開閉弁を閉じ、プロペラがプロペラ軸か
ら離脱するまで油圧ポンプにより小径部油溝の油圧を高
める。According to a twelfth aspect of the present invention, there is provided a method for separating a marine propeller from a propeller shaft, comprising: a large-diameter hydraulic path for applying hydraulic pressure to a large-diameter oil groove;
Using a hydraulic pump equipped with an on-off valve that opens and closes oil flow in the large-diameter hydraulic passage, closes the on-off valve when oil oozes to the mating end on the large-diameter side, until the propeller separates from the propeller shaft Increase the oil pressure in the small-diameter oil groove with a hydraulic pump.

【００３０】この構成により、１台のポンプを用いて、
簡便にプロペラをプロペラ軸から一気に離脱させること
ができる。なお、上記「大径部側の嵌め合い端に油がに
じみ出たとき」は、上記嵌め合い端を肉眼で観察するこ
とにより、容易に感知することができる。With this configuration, using one pump,
The propeller can be easily separated from the propeller shaft at a stroke. In addition, the above-mentioned "when oil has oozed to the fitting end on the large-diameter portion side" can be easily detected by observing the fitting end with the naked eye.

【００３１】[0031]

【発明の実施の形態】次に、図面を用いて本発明の実施
の形態について説明する。Next, embodiments of the present invention will be described with reference to the drawings.

【００３２】（実施の形態１）図１は本発明の実施の形
態における船舶用プロペラの縦断面の正面図である。こ
の船舶用プロペラ１は、テーパのついたプロペラ内面に
ぬすみ部８を有している。大径部６、ぬすみ部８および
小径部７の長さは、順にＬ1、Ｌ2およびＬ3であり、Ｌ
1：Ｌ2：Ｌ3＝２：１：１となっている。油口４を有す
る大径部油溝２および油口５を有する小径部油溝３は、
この船舶用プロペラ内面の周に沿って形成されている。
大径部油溝２の位置は、上端からＦ1＝０．５７Ｌ1にあ
り、また小径部油溝３の位置は、下端からＦ2＝０．５
７Ｌ2の距離にある。これら２つの油溝の周角度は異な
っており、小径部のほうが大きな周角度を有するように
する。これは、同じ肉厚の場合、小径部のほうが剛性が
高くなり、小径部のほうに大きな油圧を付加しないと、
径が充分膨張してプロペラが外れるようにならないから
である。(Embodiment 1) FIG. 1 is a front view of a longitudinal section of a marine propeller according to an embodiment of the present invention. The marine propeller 1 has a slack portion 8 on the inner surface of the tapered propeller. The lengths of the large-diameter portion 6, the slack portion 8, and the small-diameter portion 7 are L1, L2, and L3, respectively.
1: L2: L3 = 2: 1: 1. The large-diameter oil groove 2 having the oil port 4 and the small-diameter oil groove 3 having the oil port 5 are:
The marine propeller is formed along the inner circumference of the propeller.
The position of the large-diameter oil groove 2 is F1 = 0.57L1 from the upper end, and the position of the small-diameter oil groove 3 is F2 = 0.5 from the lower end.
It is at a distance of 7L2. The circumferential angles of these two oil grooves are different, so that the smaller diameter portion has a larger circumferential angle. This is because, for the same thickness, the rigidity of the small diameter part is higher, and unless a large oil pressure is applied to the small diameter part,
This is because the diameter does not expand sufficiently to prevent the propeller from coming off.

【００３３】図２は図１の船舶用プロペラの右側面図で
ある。上記の大径部油溝の周角度２０は１８０°であ
り、また、小径部油溝の周角度３０は２４０°である。
また、図２では、図１に図示されていないキー溝１５が
示されており、プロペラ軸に設けられた同様のキー溝と
合わせて孔にキーを差し込むことによりプロペラとプロ
ペラ軸との離脱を防止している。FIG. 2 is a right side view of the marine propeller of FIG. The circumferential angle 20 of the above-described large-diameter oil groove is 180 °, and the circumferential angle 30 of the small-diameter oil groove is 240 °.
FIG. 2 shows a keyway 15 not shown in FIG. 1, and a key is inserted into a hole together with a similar keyway provided on a propeller shaft to separate the propeller from the propeller shaft. Preventing.

【００３４】図３は、上記の船舶用プロペラ１をプロペ
ラ軸２５から外そうとして、１台の手動油圧ポンプ１７
により油圧を付加している状態を示す図である。油口
４，５には、カップラ２２，２３が嵌め合わされ、油圧
ホース１９を通じて手動油圧ポンプ１７により油圧が加
えられる。手動油圧ポンプ１７には油圧ゲージ１８が取
り付けられ、付加中の油圧を知ることができる。また、
プロペラ軸の先端にはストッパ１６が取り付けられ、プ
ロペラが衝撃的に抜けても安全なようにしている。FIG. 3 shows that one of the manual hydraulic pumps 17 is used to remove the marine propeller 1 from the propeller shaft 25.
FIG. 6 is a diagram showing a state in which hydraulic pressure is applied by the circumstance. Couplers 22 and 23 are fitted into the oil ports 4 and 5, and hydraulic pressure is applied by a manual hydraulic pump 17 through a hydraulic hose 19. A hydraulic gauge 18 is attached to the manual hydraulic pump 17 so that the hydraulic pressure being added can be known. Also,
A stopper 16 is attached to the tip of the propeller shaft, so that the propeller is safe even if it comes off by impact.

【００３５】上記のように、１台の手動油圧ポンプによ
り大径部６および小径部７の両方を、同じタイミングで
プロペラ軸２５から外すことができる。これは、大径部
油溝の周角度を小径部油溝のそれよりも適当な割合（１
８０°／２４０°）で小さくし、かつ大径部長さを小径
部長さよりも適当な割合（２／１）で長くすることによ
り実現されるものである。As described above, both the large-diameter portion 6 and the small-diameter portion 7 can be removed from the propeller shaft 25 at the same timing by one manual hydraulic pump. This is because the circumferential angle of the large-diameter oil groove is set at a more appropriate ratio (1
(80 ° / 240 °), and the length of the large-diameter portion is made longer than the length of the small-diameter portion at an appropriate ratio (2/1).

【００３６】（実施の形態２）図４は、２台の手動油圧
ポンプを用いてプロペラをプロペラ軸から外している説
明図である。２台の手動油圧ポンプ１７ａ，１７ｂを用
いる場合には、１台のポンプの場合と異なり、同じタイ
ミングで大径部６と小径部７とがプロペラ軸２５から外
れる必要はない。このため、大径部６と小径部７との長
さの割合や溝の周角度の割合の許容範囲が広がる。図４
では、大径部油溝２および小径部油溝３の周角度は、そ
れぞれ１８０°および２４０°である。ただし、大径部
長さと小径部長さとは、ともにぬすみ部の長さと同じに
している。図４に示す状態から油圧ゲージ１８ａ，１８
ｂを見ながら油圧を上げてゆくと、油溝の周角度が図３
と同じであり、大径部６の長さが小径部７の長さと同じ
なので、大径部油溝の油圧が小径部油溝のそれより低い
状態で大径部油溝の油がゆきわたり、密着状態から大径
部の全周が離脱する。小径部ではそれより高い油圧で油
がゆきわたり、両方の部分で、同じタイミングで油がゆ
きわたり、プロペラを軸から取り外すことが簡便に可能
となる。大径部と小径部との両方が、同時に外せるるこ
とは必ずしも必要ないが、そのほうが望ましいので、小
径部では大径部より高い油圧を保ちながら、油圧を上昇
させてゆくことが望ましい。(Embodiment 2) FIG. 4 is an explanatory view in which a propeller is detached from a propeller shaft using two manual hydraulic pumps. When two manual hydraulic pumps 17a and 17b are used, unlike the case of one pump, the large diameter portion 6 and the small diameter portion 7 do not need to be disengaged from the propeller shaft 25 at the same timing. For this reason, the allowable range of the ratio of the length between the large diameter portion 6 and the small diameter portion 7 and the ratio of the peripheral angle of the groove is widened. FIG.
Then, the circumferential angles of the large-diameter portion oil groove 2 and the small-diameter portion oil groove 3 are 180 ° and 240 °, respectively. However, the length of the large diameter portion and the length of the small diameter portion are both the same as the length of the sunk portion. From the state shown in FIG.
As you increase the oil pressure while watching b, the circumferential angle of the oil groove becomes
And the length of the large diameter portion 6 is the same as the length of the small diameter portion 7, so that the oil in the large diameter oil groove can be spread while the oil pressure of the large diameter oil groove is lower than that of the small diameter oil groove. Then, the entire circumference of the large diameter portion is separated from the close contact state. In the small-diameter portion, the oil spreads at a higher oil pressure, and in both portions, the oil spreads at the same timing, and the propeller can be easily removed from the shaft. It is not always necessary that both the large-diameter portion and the small-diameter portion can be removed at the same time, but it is more desirable. Therefore, it is desirable to increase the hydraulic pressure in the small-diameter portion while maintaining a higher hydraulic pressure than the large-diameter portion.

【００３７】上記のように、２台の手動油圧ポンプを用
いる場合は、ぬすみ部の両側の部分の長さや油溝の周角
度の許容範囲を広げることができる。As described above, when two manual hydraulic pumps are used, the permissible range of the length of both sides of the slack portion and the circumferential angle of the oil groove can be increased.

【００３８】（実施例）図５は、本発明の実施例におけ
るプロペラのプロペラ軸からの離脱方法を示す図であ
る。このプロペラの軸挿通部は、ＳＵＳ３０４によって
製造されている。全軸長さ１６０ｍｍ、大径部長さ６０
ｍｍ、ぬすみ部長さ４５ｍｍ、また小径部長さ５５ｍｍ
であり、油溝は小径部端面から２７ｍｍの位置に小径部
油溝が、また大径部端面から３４ｍｍの位置に大径部油
溝が設けられている。大径端部の内径である上径は１２
２ｍｍであり、小径端部の内径である下径は１０２ｍｍ
である。図５に示すように、この実施例では、１台の手
動油圧ポンプ１７から送出される油は、２本の油圧ホー
ス１９ａ，１９ｂを通って、それぞれ大径部油口４また
は小径部油口５に送られる。大径側油圧ホース１９ｂに
は、ニードル弁２４（ＮＶ-１３）が設けられている。(Embodiment) FIG. 5 is a diagram showing a method of separating a propeller from a propeller shaft in an embodiment of the present invention. The shaft insertion portion of this propeller is manufactured by SUS304. Total axis length 160mm, large diameter part length 60
mm, the length of the squeezed part is 45 mm, and the length of the small diameter part is 55 mm
The oil groove has a small-diameter oil groove at a position 27 mm from the end surface of the small-diameter portion and a large-diameter oil groove at a position 34 mm from the end surface of the large-diameter portion. The upper diameter which is the inner diameter of the large diameter end is 12
2 mm, and the lower diameter, which is the inner diameter of the small diameter end, is 102 mm.
It is. As shown in FIG. 5, in this embodiment, the oil delivered from one manual hydraulic pump 17 passes through two hydraulic hoses 19a and 19b, and is supplied to the large-diameter portion oil port 4 or the small-diameter portion oil port, respectively. Sent to 5. The large diameter hydraulic hose 19b is provided with a needle valve 24 (NV-13).

【００３９】次いで、上記の装置構成において、プロペ
ラのプロペラ軸からの離脱方法の実験を行った。まず、
このプロペラをプロペラ軸に１５トンの荷重で約０．７
ｍｍ押し込み、嵌め合いを完成させた。この後、図６に
示す手順にしたがって、プロペラの離脱を行った。ま
ず、手動油圧ポンプ１７により、油を油圧ホース１９
ａ，１９ｂから油溝に送り込み油溝の圧力を向上させ
た。このとき、大径部側の油圧計１８ｂでも小径部側の
油圧計でもほぼ同じ値を保って圧力が上昇した。大径部
側の嵌め合い端部において油のにじみが観察されたと
き、大径部側の油圧ホースにおける油圧計は、ほぼ４０
０ｋｇｆ/ｃｍ2の値を示した。ここで、ニードル弁２４
を閉じ、手動ポンプ１７により、小径部油溝５にのみ油
を送り込み小径部油溝の油圧を増大させていった。やが
て小径部でも径の拡大が生じ、大径部とともに小径部も
プロペラ軸から一気に離脱し、大きなずれ（離脱距離）
をもってプロペラがプロペラ軸から離脱する。上記の手
順は、図６のフローチャートに示す通りである。Next, an experiment was conducted on a method of detaching the propeller from the propeller shaft in the above-described apparatus configuration. First,
This propeller is mounted on a propeller shaft with a load of 15 tons to about 0.7.
mm to complete the fit. Thereafter, the propeller was removed according to the procedure shown in FIG. First, the oil is supplied to the hydraulic hose 19 by the manual hydraulic pump 17.
a and 19b were fed into the oil groove to increase the pressure in the oil groove. At this time, the hydraulic pressure gauge 18b on the large-diameter portion side and the hydraulic gauge on the small-diameter portion side maintained the same value, and the pressure increased. When oil bleeding was observed at the fitting end on the large diameter side, the oil pressure gauge on the hydraulic hose on the large diameter side showed approximately 40
The value was 0 kgf / cm 2 . Here, the needle valve 24
And the manual pump 17 feeds oil only to the small diameter portion oil groove 5 to increase the oil pressure in the small diameter portion oil groove. Eventually, the diameter of the small-diameter portion increases, and the small-diameter portion as well as the large-diameter portion departs from the propeller shaft at once, causing a large displacement (separation distance).
Causes the propeller to separate from the propeller shaft. The above procedure is as shown in the flowchart of FIG.

【００４０】上記の手順において、大径部の嵌め合い端
部で油がにじみ出たとき、大径部の油溝に油の供給を続
け、大径部油溝の油圧を増大させた場合、その嵌め合い
端部からの油漏れが大きくなり、小径部側も含め油圧を
大きく増大させることができなかった。たとえば、油圧
４００ｋｇｆ/ｃｍ2で大径部の嵌め合い端部で油がにじ
み出たとき、油の供給を続行しても、大径部および小径
部ともに５００ｋｇｆ/ｃｍ2以上に油圧を増大させるこ
とができない。このため、小径部側の嵌め合いを離脱さ
せることができず、結局、油圧ポンプのみではプロペラ
をプロペラ軸から離脱させることはできなかった。In the above procedure, when the oil oozes at the fitting end of the large diameter portion, the supply of oil to the oil groove of the large diameter portion is continued, and the oil pressure of the large diameter oil groove is increased. Oil leakage from the fitting end became large, and it was not possible to greatly increase the hydraulic pressure including the small diameter portion. For example, when the oil exuded by the end fitting of the large-diameter portion by the hydraulic 400 kgf / cm 2, to proceed the supply of oil, to increase the hydraulic pressure to 500 kgf / cm 2 or more in both the large-diameter portion and the small diameter portion Can not. For this reason, the fitting on the small-diameter portion side cannot be released, and as a result, the propeller cannot be released from the propeller shaft using only the hydraulic pump.

【００４１】図６のフローチャートに示すように、大径
部側の油圧が所定値に達したとき、大径油圧ホースの開
閉弁を閉じ、小径部油溝に油を供給し小径部油溝の油圧
を増大させることによって、プロペラを大きくずらして
プロペラ軸から離脱させることができる。As shown in the flowchart of FIG. 6, when the oil pressure on the large-diameter portion reaches a predetermined value, the on-off valve of the large-diameter hydraulic hose is closed, oil is supplied to the small-diameter oil groove, and the small-diameter oil groove is closed. By increasing the oil pressure, the propeller can be largely displaced and detached from the propeller shaft.

【００４２】また、プロペラをプロペラ軸に２２トンの
荷重をかけて１．０５ｍｍ押し込んだ後、上記の手順で
プロペラのプロペラ軸からの離脱方法の実験を行った。
その結果も、上記と同様であった。すなわち、約４００
ｋｇｆ/ｃｍ2の圧力で大径部の嵌め合い端部で油のにじ
みが生じ、ニードル弁を閉じて、小径部油溝にのみ油を
供給したところ、約７００ｋｇｆ/ｃｍ2に達した時点で
一気にプロペラがプロペラ軸から離脱した。After the propeller was pushed into the propeller shaft by 1.05 mm under a load of 22 tons, an experiment was conducted on the method of detaching the propeller from the propeller shaft by the above-described procedure.
The results were the same as above. That is, about 400
At a pressure of kgf / cm 2 , oil bleeding occurred at the fitting end of the large-diameter portion, the needle valve was closed, and oil was supplied only to the small-diameter portion oil groove. When the oil reached approximately 700 kgf / cm 2 , The propeller came off the propeller shaft at a stretch.

【００４３】上記において、本発明の実施の形態につい
て説明を行ったが、上記に開示された本発明の実施の形
態は、あくまで例示であって、本発明の範囲はこれら発
明の実施の形態に限定されない。本発明の範囲は、特許
請求の範囲の記載によって示され、さらに特許請求の範
囲の記載と均等の意味および範囲内でのすべての変更を
含む。Although the embodiments of the present invention have been described above, the embodiments of the present invention disclosed above are merely examples, and the scope of the present invention is not limited to these embodiments. Not limited. The scope of the present invention is shown by the description of the claims, and further includes all modifications within the meaning and scope equivalent to the description of the claims.

【００４４】[0044]

【発明の効果】本発明の船舶用プロペラを用いることに
より、テーパ面の加工精度を緩和できるぬすみ部を設け
たうえで、１台または２台の手動油圧ポンプを用いてプ
ロペラ軸から該船舶用プロペラを容易に外すことが可能
となる。By using the marine propeller of the present invention, a sunk portion capable of relaxing the machining accuracy of the tapered surface is provided, and one or two manual hydraulic pumps are used to separate the marine propeller shaft from the propeller shaft. The propeller can be easily removed.

【図面の簡単な説明】[Brief description of the drawings]

【図１】 実施の形態１における船舶用プロペラの縦断
部の正面図である。FIG. 1 is a front view of a longitudinal section of a marine propeller according to a first embodiment.

【図２】 図１の船舶用プロペラの右側面図である。FIG. 2 is a right side view of the marine propeller of FIG.

【図３】 １台の手動油圧ポンプを用いて船舶用プロペ
ラをプロペラ軸から外す場合の説明図である。FIG. 3 is an explanatory view in a case where a marine propeller is removed from a propeller shaft using one manual hydraulic pump.

【図４】 ２台の手動油圧ポンプを用いて船舶用プロペ
ラをプロペラ軸から外す場合の説明図である。FIG. 4 is an explanatory diagram in a case where a marine propeller is removed from a propeller shaft using two manual hydraulic pumps.

【図５】 本発明の実施例におけるプロペラのプロペラ
軸からの離脱方法を説明する図である。FIG. 5 is a diagram for explaining a method of detaching a propeller from a propeller shaft in an embodiment of the present invention.

【図６】 図５において、プロペラをプロペラ軸から離
脱させる手順を示す図である。FIG. 6 is a diagram showing a procedure for detaching a propeller from a propeller shaft in FIG.

【符号の説明】[Explanation of symbols]

１ 船舶用プロペラ、２ 大径部油溝、３ 小径部油
溝、４，５ 油口、６大径部、７ 小径部、８ ぬすみ
部、１５ キー溝、１６ ストッパ、１７ 手動油圧ポ
ンプ、１８ 油圧ゲージ、１９，１９ａ，１９ｂ 油圧
ホース、２２，２３ カップラ、２４ ニードル弁、２
５ プロペラ軸。DESCRIPTION OF SYMBOLS 1 Marine propeller, 2 large diameter oil groove, 3 small diameter oil groove, 4,5 oil port, 6 large diameter part, 7 small diameter part, 8 sunk part, 15 key groove, 16 stopper, 17 manual hydraulic pump, 18 Hydraulic gauge, 19, 19a, 19b Hydraulic hose, 22, 23 coupler, 24 needle valve, 2
5 Propeller shaft.

Claims (12)

【特許請求の範囲】[Claims] 【請求項１】 船舶のプロペラ軸のテーパ部に嵌め合わ
されるプロペラであって、 該プロペラの内周面が、軸方向に、大径部と、ぬすみ部
分と、小径部とに区分され、 前記大径部に周方向に延びる大径部油溝、および前記小
径部に周方向に延びる小径部油溝が設けられている、船
舶用プロペラ。1. A propeller fitted to a tapered portion of a propeller shaft of a ship, wherein an inner peripheral surface of the propeller is axially divided into a large-diameter portion, a slack portion, and a small-diameter portion, A marine propeller, wherein a large-diameter portion oil groove extending in a circumferential direction is provided in a large-diameter portion, and a small-diameter portion oil groove extending in a circumferential direction is provided in the small-diameter portion. 【請求項２】 前記大径部油溝が前記内周面に周角度１
７０°〜２７０°の範囲内に設けられ、前記小径部油溝
が前記内周面に周角度１７０°〜２７０°の範囲内に設
けられている、請求項１に記載の船舶用プロペラ。2. The large-diameter portion oil groove has a circumferential angle of 1 on the inner peripheral surface.
2. The marine propeller according to claim 1, wherein the small-diameter portion oil groove is provided within a range of 70 ° to 270 ° and a circumferential angle of 170 ° to 270 ° is provided on the inner peripheral surface. 3. 【請求項３】 前記大径部油溝が前記内周面に周角度１
７０°〜２００°の範囲内に設けられ、前記小径部油溝
が前記内周面に周角度２３０°〜２７０°の範囲内に設
けられている、請求項１に記載の船舶用プロペラ。3. The large-diameter portion oil groove has a circumferential angle of 1 on the inner peripheral surface.
2. The marine propeller according to claim 1, wherein the small-diameter portion oil groove is provided in a range of 70 ° to 200 ° and a circumferential angle of 230 ° to 270 ° is provided in the inner peripheral surface. 【請求項４】 前記大径部油溝の前記周角度が、前記小
径部油溝の前記周角度よりも小さい、請求項１に記載の
船舶用プロペラ。4. The marine propeller according to claim 1, wherein the circumferential angle of the large diameter portion oil groove is smaller than the circumferential angle of the small diameter portion oil groove. 【請求項５】 前記大径部の軸方向長さをＬ1、前記小
径部の長さをＬ3とするとき、前記大径部油溝の位置は
大径部で径が最も大きい上端から０．５４Ｌ1〜０．６
０Ｌ1の範囲内に位置し、前記小径部油溝の位置は小径
部で径が最も小さい下端から０．５４Ｌ3〜０．６０Ｌ3
の範囲内に位置する、請求項１〜４のいずれかに記載の
船舶用プロペラ。5. When the length of the large-diameter portion in the axial direction is L1 and the length of the small-diameter portion is L3, the position of the large-diameter portion oil groove is 0.1 mm from the upper end of the large-diameter portion having the largest diameter. 54L1-0.6
0L1 and the position of the small diameter portion oil groove is 0.54L3 to 0.60L3 from the lower end where the diameter is the smallest in the small diameter portion.
The marine propeller according to any one of claims 1 to 4, wherein the marine propeller is positioned within a range of: 【請求項６】 前記大径部の軸方向長さをＬ1、前記ぬ
すみ部分の長さをＬ2、前記小径部の長さをＬ3とすると
き、Ｌ1: Ｌ2: Ｌ3＝（１．８〜２．０）:１:（１．０
〜１．２）の範囲内にある、請求項１〜５のいずれかに
記載の船舶用プロペラ。6. When the length of the large diameter portion in the axial direction is L1, the length of the slack portion is L2, and the length of the small diameter portion is L3, L1: L2: L3 = (1.8 to 2). .0): 1: (1.0
The marine propeller according to any one of claims 1 to 5, wherein the marine propeller falls within the range of -1.2). 【請求項７】 前記内周面にはテーパが付けられ、その
テーパが、１／１６〜１／１０（角度１．７９°〜２．
８６°）の範囲内にある、請求項１〜６のいずれかに記
載の船舶用プロペラ。7. The inner peripheral surface is tapered and has a taper of 1/16 to 1/10 (angle of 1.79 ° to 2.10 °).
86). The marine propeller according to any one of claims 1 to 6, which is in the range of 86 °). 【請求項８】 前記内周面に、きさげ模様が設けられて
いる、請求項１〜７のいずれかに記載の船舶用プロペ
ラ。8. The marine propeller according to claim 1, wherein a cut pattern is provided on the inner peripheral surface. 【請求項９】 前記大径部の軸方向長さをＬ1、前記ぬ
すみ部分の長さをＬ2、前記小径部の長さをＬ3とすると
き、Ｌ1: Ｌ2: Ｌ3＝（０．８〜１．２）：１：（０．
８〜１．２）の範囲内にある、請求項１〜５、７のいず
れかに記載の船舶用プロペラ。9. When the length of the large-diameter portion in the axial direction is L1, the length of the slack portion is L2, and the length of the small-diameter portion is L3, L1: L2: L3 = (0.8 to 1) .. 2): 1: (0.
The marine propeller according to any one of claims 1 to 5, wherein the marine propeller is in the range of 8 to 1.2). 【請求項１０】 船舶のプロペラ軸のテーパ部に嵌め合
わされ、その内周面が、軸方向に、大径部と、ぬすみ部
分と、小径部とに区分され、前記大径部に大径部油溝、
また前記小径部に小径部油溝を備えているプロペラの前
記プロペラ軸からの離脱方法であって、 前記大径部油溝と前記小径部油溝とに油圧を与え離脱す
るにあたり、前記大径部油溝よりも前記小径部油溝に高
圧の油圧がかかるように油を供給する、船舶用プロペラ
のプロペラ軸からの離脱方法。10. A ship fitted with a tapered portion of a propeller shaft of a ship, and an inner peripheral surface thereof is axially divided into a large-diameter portion, a slack portion, and a small-diameter portion. Oil gutter,
Also, a method for separating a propeller provided with a small-diameter oil groove in the small-diameter portion from the propeller shaft, wherein the hydraulic pressure is applied to the large-diameter oil groove and the small-diameter oil groove to separate the large-diameter oil groove from the propeller shaft. A method for detaching a marine propeller from a propeller shaft, wherein oil is supplied so that high-pressure oil pressure is applied to the small-diameter portion oil groove rather than the portion oil groove. 【請求項１１】 前記大径部油溝と前記小径部油溝とに
油を供給し、前記大径部油溝の油圧が所定値に達したと
き、前記大径部油溝への油の供給を停止し、前記小径部
油溝への油の供給を、より高圧の所定値になるまで続け
る、請求項１０に記載の船舶用プロペラのプロペラ軸か
らの離脱方法。11. An oil is supplied to the large-diameter oil groove and the small-diameter oil groove, and when the oil pressure of the large-diameter oil groove reaches a predetermined value, oil is supplied to the large-diameter oil groove. The method for separating a marine propeller from a propeller shaft according to claim 10, wherein the supply is stopped and the supply of the oil to the small-diameter portion oil groove is continued until a higher pressure reaches a predetermined value. 【請求項１２】 前記大径部油溝に油圧を与える大径部
油圧路と、前記小径部油溝に油圧を与える小径部油圧路
と、前記大径部油圧路において油の流通を開閉する開閉
弁を備える油圧ポンプを用い、前記大径部側の嵌め合い
端に油がにじみ出たときに、前記開閉弁を閉じ、前記プ
ロペラが前記プロペラ軸から離脱するまで前記油圧ポン
プにより前記小径部油溝の油圧を高める、請求項１０ま
たは１１に記載の船舶用プロペラのプロペラ軸からの離
脱方法。12. A large-diameter hydraulic passage for applying oil pressure to the large-diameter oil groove, a small-diameter hydraulic passage for applying hydraulic pressure to the small-diameter oil groove, and oil passage in the large-diameter hydraulic passage. Using a hydraulic pump equipped with an on-off valve, when the oil oozes into the fitting end on the large-diameter portion side, close the on-off valve and use the hydraulic pump to reduce the oil of the small-diameter portion until the propeller separates from the propeller shaft. The method for separating a marine propeller from a propeller shaft according to claim 10 or 11, wherein the hydraulic pressure of the groove is increased.
JP2000388270A 1999-12-28 2000-12-21 Ship propeller and separating method from its propeller shaft Pending JP2001247093A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000388270A JP2001247093A (en) 1999-12-28 2000-12-21 Ship propeller and separating method from its propeller shaft

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP37302399 1999-12-28
JP11-373023 1999-12-28
JP2000388270A JP2001247093A (en) 1999-12-28 2000-12-21 Ship propeller and separating method from its propeller shaft

Publications (1)

Publication Number Publication Date
JP2001247093A true JP2001247093A (en) 2001-09-11

Family

ID=26582464

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000388270A Pending JP2001247093A (en) 1999-12-28 2000-12-21 Ship propeller and separating method from its propeller shaft

Country Status (1)

Country Link
JP (1) JP2001247093A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010185525A (en) * 2009-02-12 2010-08-26 Mitsubishi Heavy Ind Ltd Tapered coupling structure and rotary machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010185525A (en) * 2009-02-12 2010-08-26 Mitsubishi Heavy Ind Ltd Tapered coupling structure and rotary machine
US8302754B2 (en) 2009-02-12 2012-11-06 Mitsubishi Heavy Industries, Ltd. Tapered coupling structure and rotating machine

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