JPH01174908A - Method for measuring angle of torsion of rotary shaft - Google Patents

Method for measuring angle of torsion of rotary shaft

Info

Publication number
JPH01174908A
JPH01174908A JP33370587A JP33370587A JPH01174908A JP H01174908 A JPH01174908 A JP H01174908A JP 33370587 A JP33370587 A JP 33370587A JP 33370587 A JP33370587 A JP 33370587A JP H01174908 A JPH01174908 A JP H01174908A
Authority
JP
Japan
Prior art keywords
rotary shaft
rotating shaft
torsion
laser beam
laser light
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
JP33370587A
Other languages
Japanese (ja)
Inventor
Hiroaki Kayama
香山　裕明
Koji Unno
海野　孝二
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.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan Ltd
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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP33370587A priority Critical patent/JPH01174908A/en
Publication of JPH01174908A publication Critical patent/JPH01174908A/en
Pending legal-status Critical Current

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  • Length Measuring Devices By Optical Means (AREA)

Abstract

PURPOSE:To accurately perform measurement, by freely elongating the interval between a laser beam source and a laser beam detector. CONSTITUTION:A laser beam source 5 is fixed to a rotary shaft 1 and a laser beam detector 6 is also fixed thereto so as to provide an interval (s) from said laser beam source 5. The laser beam 7 emitted from the beam source 5 in parallel to the axial line of the rotary shaft 1 is received by the beam detector 6. Hereupon, the angle theta of torsion of the rotary shaft 1 due to the torsion of the rotary shaft 1 is measured. Said beam detector 6 has a beam receiving surface having a predetermined size and the angle theta is operated from the distances L between laser beam receiving positions A, B before and after torsion is generated in the rotary shaft 1 and the predetermined torsion radius R of the beam detector 6. By this method, the interval (s) can be adjusted without receiving the restriction of the vibration frequency width of a piano wire in a measuring method using the piano wire.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、回転軸のねじれ角測定方法に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for measuring the torsion angle of a rotating shaft.

〔従来の技術〕[Conventional technology]

船舶の主機関の回転軸のねじれ角に基いて、主機関の馬
力を測定する方法がある。回転軸のねじれ角を測定する
１つの方法として、第３図に示すように、回転軸１にそ
の軸方向に間隔をあけて１対のリング２．２′を固定し
、一方のリング２に設けられたアーム３間に、他方のリ
ング２′に設けられたアーム３′を挿入し、アーム３．
３′間にピアノ線４を張シ、ピアノ線４に撮動を付与し
、その振動周波数に基いて回転軸のねじれ角を測定する
。There is a method of measuring the horsepower of a ship's main engine based on the torsion angle of the rotating shaft of the main engine. As one method for measuring the torsion angle of a rotating shaft, as shown in FIG. The arm 3' provided on the other ring 2' is inserted between the provided arms 3, and the arm 3.
A piano wire 4 is stretched between 3' and an image is applied to the piano wire 4, and the torsion angle of the rotating shaft is measured based on the vibration frequency.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

しかし、上述した従来のねじれ角測定方法は、以下の問
題点を有している。即ち、ピアノ線４の有効な振動周波
数の幅が狭いために、リング２゜２′の間隔（ｄ）を広
くすることができない。このために、ねじれ角の測定が
正確に行えない。However, the conventional torsion angle measuring method described above has the following problems. That is, since the width of the effective vibration frequency of the piano wire 4 is narrow, the interval (d) between the rings 2.degree. 2' cannot be increased. For this reason, the twist angle cannot be measured accurately.

この発明の目的は、回転軸のねじれ角を正確に測定する
ことができる方法を提供することにある。An object of the present invention is to provide a method that can accurately measure the torsion angle of a rotating shaft.

〔問題点を解決するための手段〕[Means for solving problems]

この発明は、回転軸上にレーザ光源を固定し、前記回転
軸上に、前記レーザ光源と間隔をあけてレーデ受光器を
固定し、前記レーザ光源から発射したレーザ光を前記レ
ーザ受光器によって受光し、前記回転軸のねじれによる
受光位置のずれによって、前記回転軸のねじれ角を測定
することに特徴を有するものである。In the present invention, a laser light source is fixed on a rotating shaft, a radar receiver is fixed on the rotating shaft at a distance from the laser light source, and the laser light emitted from the laser light source is received by the laser receiver. However, the present invention is characterized in that the torsion angle of the rotating shaft is measured based on the shift of the light receiving position due to the twisting of the rotating shaft.

次に、この発明の、回転軸のねじれ角測定方法の一実施
態様を図面を参照しながら説明する。Next, one embodiment of the method for measuring the torsion angle of a rotating shaft according to the present invention will be described with reference to the drawings.

第１図は、この発明の、回転軸のねじれ角測定方法の一
実施態様を示す正面図である。FIG. 1 is a front view showing one embodiment of the method for measuring the torsion angle of a rotating shaft according to the present invention.

第１図に示すように、この発明は、回転軸１上にレーザ
光源５を固定し、回転軸１上に、レーザ光源５と間隔（
Ｓ）をあけてレーザ受光器６を固定しレーザ光源５から
回転軸１の軸線と平行に発射したレーザ光７をレーザ受
光器６によって受光し、回転軸１のねじれによる受光位
置のずれによって回転軸１のねじれ角（のを測定するも
のである。As shown in FIG. 1, in the present invention, a laser light source 5 is fixed on a rotating shaft 1, and a distance between the laser light source 5 and the rotating shaft 1 is
S) is opened and a laser receiver 6 is fixed, and the laser light 7 emitted from the laser light source 5 is emitted parallel to the axis of the rotating shaft 1. This is to measure the torsion angle of shaft 1.

レーザ受光器６は、第２図に示すように、所定の大きさ
の受光面を有し、回転軸１にねじれが生じる前のレーザ
受光位置Ａとの回転軸１にねじれが生じた後のレーデ受
光位置Ｂとの間の距離（Ｌ）と、予め決められているレ
ーザ受光器６のねじれ半径（→とから、回転軸１のねじ
れ角（のを演算する。As shown in FIG. 2, the laser receiver 6 has a light-receiving surface of a predetermined size, and has a laser light-receiving position A before twisting of the rotating shaft 1 and a position A after twisting the rotating shaft 1. The torsion angle (of the rotating shaft 1) is calculated from the distance (L) from the radar light receiving position B and the predetermined torsion radius (→) of the laser receiver 6.

〔発明の効果〕〔Effect of the invention〕

以上説明したように、この発明によれば、レーザ光源と
レーザ受光器との間の間隔（ｓ）は、自由に長くするこ
とができるので、回転軸のねじれ角の測定がきわめて正
確に行うことができ、しかも、従来法のように、ピアノ
線の振動周波数から回転軸のねじれ角への換算操作が不
要となるので、回転軸のねじれ角の測定が容易に行え、
さらに、光源と受光器を回転軸上に取り付けることによ
って、船体振動による測定誤差が生じないといった有用
な効果がもたらされる。As explained above, according to the present invention, since the distance (s) between the laser light source and the laser receiver can be freely lengthened, the torsion angle of the rotating shaft can be measured with great accuracy. In addition, unlike conventional methods, there is no need to convert the vibration frequency of the piano wire to the torsion angle of the rotating shaft, making it easy to measure the torsional angle of the rotating shaft.
Furthermore, by mounting the light source and the light receiver on the rotation axis, a useful effect is brought about such that measurement errors due to hull vibrations are not caused.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、この発明の、回転軸のねじれ角測定方法の一
実施態様を示す正面図、第２図は、レーザ受光面の正面
図、第３図は、従来の、回転軸のねじれ角測定方法を示
す正面図である。図面において、 ｌ・・・回転軸、　　　　　２・・・リング、３・・・
アーム　　　　　４・・・ピアノ線、５・・・レーザ光
源、　　　６・・・レーデ受光ｉ、７・・・レーザ光。FIG. 1 is a front view showing an embodiment of the method for measuring the torsion angle of a rotating shaft according to the present invention, FIG. 2 is a front view of a laser receiving surface, and FIG. 3 is a conventional method for measuring the torsion angle of a rotating shaft. It is a front view showing a measurement method. In the drawings, l...Rotating shaft, 2...Ring, 3...
Arm 4... Piano wire, 5... Laser light source, 6... Rade light receiving i, 7... Laser light.

Claims (1)

【特許請求の範囲】[Claims] 回転軸上にレーザ光源を固定し、前記回転軸上に、前記
レーザ光源と間隔をあけてレーザ受光器を固定し、前記
レーザ光源から発射したレーザ光を前記レーザ受光器に
よつて受光し、前記回転軸のねじれによる受光位置のず
れによつて、前記回転軸のねじれ角を測定することを特
徴とする、回転軸のねじれ角測定方法。a laser light source is fixed on a rotating shaft, a laser receiver is fixed on the rotating shaft at a distance from the laser light source, and the laser light emitted from the laser light source is received by the laser receiver, A method for measuring a torsion angle of a rotating shaft, characterized in that the torsion angle of the rotating shaft is measured based on a shift in a light receiving position due to the twisting of the rotating shaft.
JP33370587A 1987-12-29 1987-12-29 Method for measuring angle of torsion of rotary shaft Pending JPH01174908A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP33370587A JPH01174908A (en) 1987-12-29 1987-12-29 Method for measuring angle of torsion of rotary shaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP33370587A JPH01174908A (en) 1987-12-29 1987-12-29 Method for measuring angle of torsion of rotary shaft

Publications (1)

Publication Number Publication Date
JPH01174908A true JPH01174908A (en) 1989-07-11

Family

ID=18269041

Family Applications (1)

Application Number Title Priority Date Filing Date
JP33370587A Pending JPH01174908A (en) 1987-12-29 1987-12-29 Method for measuring angle of torsion of rotary shaft

Country Status (1)

Country Link
JP (1) JPH01174908A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2482633A (en) * 2007-02-16 2012-02-08 Flowserve Man Co Measuring torque and thrust in a rotatable component of an electric valve system
JP2012510044A (en) * 2008-11-26 2012-04-26 ロールス・ロイス・ピーエルシー Torque measurement
JP2012510046A (en) * 2008-11-26 2012-04-26 ロールス・ロイス・ピーエルシー Rotating element strain measurement
JP2012510045A (en) * 2008-11-26 2012-04-26 ロールス・ロイス・ピーエルシー Rotating element strain measurement

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2482633A (en) * 2007-02-16 2012-02-08 Flowserve Man Co Measuring torque and thrust in a rotatable component of an electric valve system
GB2482633B (en) * 2007-02-16 2012-04-04 Flowserve Man Co Non-contact torque sensing for valve actuators
US8608128B2 (en) 2007-02-16 2013-12-17 Flowserve Management Company Non-contact torque sensing for valve actuators
US9500542B2 (en) 2007-02-16 2016-11-22 Flowserve Management Company Non-contact torque sensing for valve actuators
JP2012510044A (en) * 2008-11-26 2012-04-26 ロールス・ロイス・ピーエルシー Torque measurement
JP2012510046A (en) * 2008-11-26 2012-04-26 ロールス・ロイス・ピーエルシー Rotating element strain measurement
JP2012510045A (en) * 2008-11-26 2012-04-26 ロールス・ロイス・ピーエルシー Rotating element strain measurement

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