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 groundInfo
- 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
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
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)
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)
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 |
-
1979
- 1979-01-16 JP JP375279A patent/JPS6021321B2/en not_active Expired
Cited By (3)
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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