JPS56104203A - Bolt substancial extensometer - Google Patents
Bolt substancial extensometerInfo
- Publication number
- JPS56104203A JPS56104203A JP676180A JP676180A JPS56104203A JP S56104203 A JPS56104203 A JP S56104203A JP 676180 A JP676180 A JP 676180A JP 676180 A JP676180 A JP 676180A JP S56104203 A JPS56104203 A JP S56104203A
- Authority
- JP
- Japan
- Prior art keywords
- bolt
- fixed
- arm
- detection plate
- substantial
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
Abstract
PURPOSE:To make it possible to measure the substantial extension of a bolt by preparing an electrical extension detection apparatus, which detects the extension of the bolt, on one end of the hard arm slightly longer than the length of the bolt, while another end of said arm is fixed on one end of the bolt. CONSTITUTION:The horizontal part of an L-shaped hard arm 1 of substantial extensometer passes through an opening 5 of the holder 4 holding a head 3 of the bolt 2 and the end thereof is fixed on the head 3 of the bolt with a screw 6. The vertical part of said arm 1 is slightly longer than the length of the bolt 2 and on the lower end thereof is fixed an extention detection plate 8 is fixed with a screw 7. The detection plate 8 having the smaller hardness than the arm 1 passes through the opening 11 of the holder 10 holding the bolt 2 through a nut 9, while a ball 12 fixed on the tip thereof gets into a conical notch 13 of the lower end of the bolt 2 to adhere thereto. When the bolt is extended by a draw gear, the detection plate 8 is bent to measure the substantial extention by means of a strain gauge 16 pasted on the detection plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP676180A JPS56104203A (en) | 1980-01-25 | 1980-01-25 | Bolt substancial extensometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP676180A JPS56104203A (en) | 1980-01-25 | 1980-01-25 | Bolt substancial extensometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56104203A true JPS56104203A (en) | 1981-08-19 |
Family
ID=11647154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP676180A Pending JPS56104203A (en) | 1980-01-25 | 1980-01-25 | Bolt substancial extensometer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56104203A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2530811A1 (en) * | 1982-05-03 | 1984-01-27 | Giuseppe Milazzo | Method and device for measuring mechanical tension in riveted joints. |
| CN108290598A (en) * | 2015-11-12 | 2018-07-17 | 日本精工株式会社 | The assembly method of transfer and transfer |
| WO2020108721A1 (en) * | 2018-12-18 | 2020-06-04 | R&D Engineering A/S | Bolt tension measuring device and method |
-
1980
- 1980-01-25 JP JP676180A patent/JPS56104203A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2530811A1 (en) * | 1982-05-03 | 1984-01-27 | Giuseppe Milazzo | Method and device for measuring mechanical tension in riveted joints. |
| CN108290598A (en) * | 2015-11-12 | 2018-07-17 | 日本精工株式会社 | The assembly method of transfer and transfer |
| JPWO2017082325A1 (en) * | 2015-11-12 | 2018-09-27 | 日本精工株式会社 | Steering device and method for assembling steering device |
| WO2020108721A1 (en) * | 2018-12-18 | 2020-06-04 | R&D Engineering A/S | Bolt tension measuring device and method |
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