JPS5595802A - Method and device for measurement of effective inner diameter of tube buried under ground - Google Patents

Method and device for measurement of effective inner diameter of tube buried under ground

Info

Publication number
JPS5595802A
JPS5595802A JP375279A JP375279A JPS5595802A JP S5595802 A JPS5595802 A JP S5595802A JP 375279 A JP375279 A JP 375279A JP 375279 A JP375279 A JP 375279A JP S5595802 A JPS5595802 A JP S5595802A
Authority
JP
Japan
Prior art keywords
inner diameter
arm
effective inner
expansion
buried 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.)
Granted
Application number
JP375279A
Other languages
Japanese (ja)
Other versions
JPS6021321B2 (en
Inventor
Shigetoshi Miyasaka
Ichiro Matsumoto
Toyoo Fukuda
Tadashi Nose
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.)
NICHIDOU SEIKOU KK
Kansai Electric Power Co Inc
Original Assignee
NICHIDOU SEIKOU KK
Kansai Electric Power Co Inc
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 NICHIDOU SEIKOU KK, Kansai Electric Power Co Inc filed Critical NICHIDOU SEIKOU KK
Priority to JP375279A priority Critical patent/JPS6021321B2/en
Publication of JPS5595802A publication Critical patent/JPS5595802A/en
Publication of JPS6021321B2 publication Critical patent/JPS6021321B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

PURPOSE: To secure the simple and accurate measurement for the effective inner diameter at each point of the buried tube by putting the unit possessing the mechanism which can expand and contract to the diameter direction and along the inner diameter of the buried tube into the buried tube and then shifting the unit.
CONSTITUTION: Pulling I bolt 11 is attached to the front part of case 9 incorporating differential transformer 10. And the expansion mechanism is formed with several numbers of expansion arm 15 plus expnasion arm 16 with tappet along with intervention of expansion connector 14. Then core 18 of transformer 10 is displaced according to the change of the inner diameter, and the signals are extracted through cable 4. With the node point of connector 14, each arm can be expanded and contracted in the same amount and toward the diameter so that arm 15 of the 6 directions may be turned into an inscribed circle. As a result, the effective inner diameter can be measured in a simple and accurate way.
COPYRIGHT: (C)1980,JPO&Japio
JP375279A 1979-01-16 1979-01-16 Method and device for measuring the effective inner diameter of underground pipes Expired JPS6021321B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP375279A JPS6021321B2 (en) 1979-01-16 1979-01-16 Method and device for measuring the effective inner diameter of underground pipes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP375279A JPS6021321B2 (en) 1979-01-16 1979-01-16 Method and device for measuring the effective inner diameter of underground pipes

Publications (2)

Publication Number Publication Date
JPS5595802A true JPS5595802A (en) 1980-07-21
JPS6021321B2 JPS6021321B2 (en) 1985-05-27

Family

ID=11565917

Family Applications (1)

Application Number Title Priority Date Filing Date
JP375279A Expired JPS6021321B2 (en) 1979-01-16 1979-01-16 Method and device for measuring the effective inner diameter of underground pipes

Country Status (1)

Country Link
JP (1) JPS6021321B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6098012U (en) * 1983-12-10 1985-07-04 三菱重工業株式会社 Rotor hole inner diameter measuring device
JPS62197007U (en) * 1986-06-06 1987-12-15
CN106441194A (en) * 2016-08-31 2017-02-22 郑州精益达汽车零部件有限公司 Non-standard testing tool and method for measuring diameter of hemisphere of housing of differential mechanism

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3855951B2 (en) * 2002-05-17 2006-12-13 Ｊｆｅエンジニアリング株式会社 Pipeline shape measuring apparatus and method
KR102350096B1 (en) * 2019-12-27 2022-01-10 곽재훈 Drill guide bush

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6098012U (en) * 1983-12-10 1985-07-04 三菱重工業株式会社 Rotor hole inner diameter measuring device
JPS62197007U (en) * 1986-06-06 1987-12-15
CN106441194A (en) * 2016-08-31 2017-02-22 郑州精益达汽车零部件有限公司 Non-standard testing tool and method for measuring diameter of hemisphere of housing of differential mechanism

Also Published As

Publication number Publication date
JPS6021321B2 (en) 1985-05-27

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