JPH03170001A - Measuring instrument for mean internal diameter of pipe - Google Patents

Measuring instrument for mean internal diameter of pipe

Info

Publication number
JPH03170001A
JPH03170001A JP30995489A JP30995489A JPH03170001A JP H03170001 A JPH03170001 A JP H03170001A JP 30995489 A JP30995489 A JP 30995489A JP 30995489 A JP30995489 A JP 30995489A JP H03170001 A JPH03170001 A JP H03170001A
Authority
JP
Japan
Prior art keywords
pipe
arm
value
roller
tube
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
JP30995489A
Other languages
Japanese (ja)
Inventor
Takefumi Narahara
楢原 武文
Hitoshi Iijima
飯島 齊
Kazuo Yamazaki
山崎 一男
Ikuo Yamada
郁生 山田
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 JP30995489A priority Critical patent/JPH03170001A/en
Publication of JPH03170001A publication Critical patent/JPH03170001A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To accurately and speedily measure the mean internal diameter of the pipe by calculating the mean internal diameter of the pipe by a computing element from measured values obtained by a peripheral length meter, displaying the value on a display device, and comparing the calculated mean internal diameter value with a set value, and generating an alarm when the specific value is exceeded. CONSTITUTION:The rotary shaft 7a of a motor 7 is positioned on the prolongation of the axis of the pipe 5. An arm 8 is fixed to the rotary shaft 7a at right angles to the rotary shaft 7a and a roller 9 is supported pivotally atop of the arm 8. The peripheral length meter 1 consists of the motor 7, the arm 8, and a roller 9 and is pressed against the inner peripheral surface of the pipe 5 by a spring 10 extended in the arm 8 by the roller 9. When the motor 7 is driven, the arm 8 rotates around the rotary shaft 7a and the roller 9 is therefore rotated; and the peripheral length of the pipe 5 is measured from the number of turns of the roller 9 when one round of the arm 9 is made and this value is converted into a signal, which is outputted to a computing element 2 connected to the peripheral length meter 1. The computing element 2 calculates the mean internal diameter of the pipe 5 from the measured value of the peripheral length of the pipe 5 and converts the value into a signal, which is outputted to a display device 3 and a warning device 4 connected to the computing element 2.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は管の平均内径測定器に関するものである。[Detailed description of the invention] [Industrial application field] This invention relates to an instrument for measuring the average inner diameter of a tube.

〔従来の技術〕[Conventional technology]

ラインパイプにおいてはその用途に応じて管の平均内径
が規定されており、従来から管の平均内径の測定が行わ
れている。この管の平均内径の測定は管の内周長をまず
測定し、前記測定値から管の内径(直径)を算出するこ
とにより行われている。すなわち、(内周長/π)の値
が管の平均内径値となる。従来の管の平均内径の計測は
、第2図に示すようにメジャリングテーブl2あるいは
限界ゲージ等を使用して、管5の内周長を人手によって
測定することにより行われている。
In line pipes, the average inner diameter of the pipe is specified depending on its use, and the average inner diameter of the pipe has been measured for a long time. The average inner diameter of the tube is measured by first measuring the inner circumferential length of the tube, and then calculating the inner diameter (diameter) of the tube from the measured value. That is, the value of (inner circumference length/π) becomes the average inner diameter value of the tube. Conventionally, the average inner diameter of a tube is measured by manually measuring the inner circumference of the tube 5 using a measuring table 12 or a limit gauge, as shown in FIG.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

しかしながら、メジャリングテープによる測定方法は、
披測定管の内径が約150m+o以上ないと測定が困難
である。また、上記測定方法は精度的にも問題があった
However, the measurement method using measuring tape is
Measurement is difficult unless the inner diameter of the measuring tube is approximately 150 m+o or more. Moreover, the above measurement method also had a problem in terms of accuracy.

従ってこの発明の目的は、管の平均内径を高精度で自動
的に測定することができ、しかも、小径の管にも適用す
ることができる管の平均内径測定器を提供することにあ
る。
Accordingly, an object of the present invention is to provide an apparatus for measuring the average inner diameter of a tube, which can automatically measure the average inner diameter of a tube with high precision, and which can also be applied to small diameter tubes.

〔課題を解決するための手段〕[Means to solve the problem]

この発明は、回転軸が管の軸線の延長線上に位置するよ
うに前記管の人口付近に設置されるモータと、前記モー
タの回転軸と直交して前記回転軸に固着されたアームと
、前記アームの先端に軸着されたローラとからなり、前
記ローラを前記管の内周面に押し付けて接触させ、前記
アームを前記回転軸を中心に回動させることにより前記
ローラを回転させ、(前記アームが1回転する間の)前
記ローラの回転数によって前記管の内周長を測定するこ
とからなる管の周長計と、前記周長計によって測定され
た測定値から前記管の平均内径を算出する演算器と、前
記演算器によって算出された平均内径を表示する表示器
と、演算された前記平均内径値と設定値とを比較し所定
値以上の差がある場合には雪報を発する宵報機とからな
ることに特徴を有するものである。
The present invention includes a motor installed near the tube such that the rotation axis is located on an extension of the axis of the tube, an arm fixed to the rotation shaft perpendicular to the rotation axis of the motor, and the and a roller pivotally attached to the tip of an arm, the roller is pressed against the inner circumferential surface of the tube, and the arm is rotated about the rotation axis to rotate the roller ( A tube circumference meter that measures the inner circumference of the tube according to the number of rotations of the roller (during one revolution of the arm), and an average inner diameter of the tube is calculated from the measured value by the circumference meter. a calculator, a display that displays the average inner diameter calculated by the calculator, and an evening alarm that compares the calculated average inner diameter value with a set value and issues a snow warning if there is a difference of more than a predetermined value. It is characterized by consisting of a machine.

次ぎにこの発明を図面を参照しながら説明する。第l図
はこの発明の1実施態様を示す側面図である。図面にお
いて、管は断面図で示す。図面に示すように、この発明
の測定器は軸線が水平になるように管5の管端付近に固
定されているマグネット式の架台6上に載設された、周
長計1と、演算23 2と、表示器3と、旨報機4とか
らなっている。
Next, the present invention will be explained with reference to the drawings. FIG. 1 is a side view showing one embodiment of the present invention. In the drawings, the tube is shown in cross-section. As shown in the drawings, the measuring instrument of the present invention includes a circumference meter 1 mounted on a magnetic pedestal 6 fixed near the end of a tube 5 so that its axis is horizontal, and a calculation 23 2 It consists of a display device 3, and an information device 4.

モータ7の回転軸7aは管5の軸線の延長線上に位置し
ている。回転軸7aには回転軸7aと直交してアーム8
が固着されている。アーム8の先端には口−ラ9が軸着
されている。モータ7、アーム8、口−ラ9によって周
長計1が構成されている。
A rotating shaft 7a of the motor 7 is located on an extension of the axis of the tube 5. An arm 8 is attached to the rotating shaft 7a perpendicularly to the rotating shaft 7a.
is fixed. A lip 9 is pivotally attached to the tip of the arm 8. A circumference meter 1 is constituted by a motor 7, an arm 8, and a collar 9.

ローラ9はアーム8に内設されたバネlOによって管5
の内周面に常に押し付けられている状態になるように構
成されている。また、周長計1には回転軸8の回転した
角度を計測する回転検出計1lが取り付けられている。
The roller 9 is connected to the pipe 5 by a spring lO installed in the arm 8.
It is configured so that it is always pressed against the inner circumferential surface of. Further, a rotation detector 1l is attached to the circumference meter 1 to measure the rotation angle of the rotating shaft 8.

モータ7を駆動して回転軸を回動させることにより、ア
ーム8は回転軸7aを中心に回動し、管5の内周面に接
触するローラ9がこれにより回転する。そしてアーム8
が1周(360°回転)したときのローラ9の回転数か
ら管5の周長を測定し、この値を信号に変換して周長計
1に接続された演算器2に出力する。演算器2において
は周長計1によって測定された管5の周長の測定値から
管5の平均内径を算出しその値を信号に変換して演算器
2に接続された表示器3および警報機4に出力する。そ
して、この値を表示器3によって表示し、さらに、菩報
機4においてはあらかじめ指定された指定平均内径値と
算出された管5の平均内径値とを比較し、管5の平均内
径値と前記指定平均内径値との差が所定値以上である場
合には警報を発する。
By driving the motor 7 to rotate the rotating shaft, the arm 8 rotates about the rotating shaft 7a, and the roller 9 in contact with the inner circumferential surface of the tube 5 rotates thereby. and arm 8
The circumferential length of the tube 5 is measured from the number of rotations of the roller 9 when the roller rotates once (rotated 360 degrees), and this value is converted into a signal and output to the calculator 2 connected to the circumference meter 1. The calculator 2 calculates the average inner diameter of the tube 5 from the circumferential length of the tube 5 measured by the circumference meter 1, converts the value into a signal, and sends the signal to the display 3 and alarm connected to the calculator 2. Output to 4. Then, this value is displayed on the display 3, and furthermore, the alarm device 4 compares the specified average inner diameter value specified in advance and the calculated average inner diameter value of the tube 5. If the difference from the specified average inner diameter value is greater than or equal to a predetermined value, an alarm is issued.

〔発明の効果〕〔Effect of the invention〕

以上説明したように、この発明によれば管の平均内径を
正確且つ迅速に測定することができる産業上有用な効果
がもたらされる。
As explained above, according to the present invention, the industrially useful effect of being able to accurately and quickly measure the average inner diameter of a pipe is brought about.

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

第1図はこの発明の1実施態様を示す側面図、第2図は
従来の管の周長の測定方法を示す正面図である。図面に
おいて、 1 −一一周長計、 2一演算器、 3.,.表示器、 4−?!’報機、 5一管、 6一架台、 7−モータ、 7a一回転軸、 8−アーム、 9.・・ローラ、 lO−・−バネ、 11−−一回転検出計、 12− メジャリングテーブ。
FIG. 1 is a side view showing one embodiment of the present invention, and FIG. 2 is a front view showing a conventional method for measuring the circumference of a pipe. In the drawings: 1-11 circumference length meter, 21 computing unit, 3. 、. Display, 4-? ! ' Alarm, 5 - pipe, 6 - stand, 7 - motor, 7a - rotation shaft, 8 - arm, 9. ...Roller, lO-.-Spring, 11--One revolution detector, 12- Measuring table.

Claims (1)

【特許請求の範囲】[Claims] 1 回転軸が管の軸線の延長線上に位置するように前記
管の入口付近に設置されるモータと、前記モータの回転
軸と直交して前記回転軸に固着されたアームと、前記ア
ームの先端に軸着されたローラとからなり、前記ローラ
を前記管の内周面に押し付けて接触させ、前記アームを
前記回転軸を中心に回動させることにより前記ローラを
回転させ、前記ローラの回転数によって前記管の内周長
を測定することからなる管の周長計と、前記周長計によ
って測定された測定値から前記管の平均内径を算出する
演算器と、前記演算器によって算出された平均内径を表
示する表示器と、演算された前記平均内径値と設定値と
を比較し所定値以上の差がある場合には警報を発する警
報機とからなることを特徴とする管の平均内径測定器。
1. A motor installed near the entrance of the tube so that the axis of rotation is located on an extension of the axis of the tube, an arm that is perpendicular to the axis of rotation of the motor and fixed to the axis of rotation, and a tip of the arm. and a roller pivoted on the tube, the roller is pressed against the inner circumferential surface of the tube, and the arm is rotated about the rotation axis to rotate the roller, and the rotation speed of the roller is adjusted. a pipe circumference meter that measures the inner circumference of the tube, a calculator that calculates the average inner diameter of the tube from the measured value by the circumference meter, and an average inner diameter calculated by the calculator. and an alarm device that compares the calculated average inner diameter value with a set value and issues an alarm if there is a difference of more than a predetermined value. .
JP30995489A 1989-11-29 1989-11-29 Measuring instrument for mean internal diameter of pipe Pending JPH03170001A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP30995489A JPH03170001A (en) 1989-11-29 1989-11-29 Measuring instrument for mean internal diameter of pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP30995489A JPH03170001A (en) 1989-11-29 1989-11-29 Measuring instrument for mean internal diameter of pipe

Publications (1)

Publication Number Publication Date
JPH03170001A true JPH03170001A (en) 1991-07-23

Family

ID=17999356

Family Applications (1)

Application Number Title Priority Date Filing Date
JP30995489A Pending JPH03170001A (en) 1989-11-29 1989-11-29 Measuring instrument for mean internal diameter of pipe

Country Status (1)

Country Link
JP (1) JPH03170001A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0618264A (en) * 1992-07-03 1994-01-25 Ohbayashi Corp Marking device
KR100802039B1 (en) * 2001-07-11 2008-02-12 주식회사 포스코 Bearing Inside Calibrator Of Large Bushing type
JP2015506473A (en) * 2011-12-29 2015-03-02 ヴァルレック オイル アンド ガスフランス Device for measuring the internal or external contour of tubular components
CN108871159A (en) * 2018-06-14 2018-11-23 钟维栋 A kind of detection device of S-shaped pipe fitting

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0618264A (en) * 1992-07-03 1994-01-25 Ohbayashi Corp Marking device
KR100802039B1 (en) * 2001-07-11 2008-02-12 주식회사 포스코 Bearing Inside Calibrator Of Large Bushing type
JP2015506473A (en) * 2011-12-29 2015-03-02 ヴァルレック オイル アンド ガスフランス Device for measuring the internal or external contour of tubular components
CN108871159A (en) * 2018-06-14 2018-11-23 钟维栋 A kind of detection device of S-shaped pipe fitting
CN108871159B (en) * 2018-06-14 2020-06-05 台州宝诚科技服务有限公司 Detection apparatus for S-shaped pipe fitting is used

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