CN2164015Y - Resistance strain gauge type stretching gauge - Google Patents
Resistance strain gauge type stretching gauge Download PDFInfo
- Publication number
- CN2164015Y CN2164015Y CN 93219143 CN93219143U CN2164015Y CN 2164015 Y CN2164015 Y CN 2164015Y CN 93219143 CN93219143 CN 93219143 CN 93219143 U CN93219143 U CN 93219143U CN 2164015 Y CN2164015 Y CN 2164015Y
- Authority
- CN
- China
- Prior art keywords
- knife
- upper arm
- arm
- extensometer
- resistance strain
- 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.)
- Expired - Fee Related
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model relates to a resistance strain gauge type extensometer, belonging to the measuring device class. The utility model is composed of a bridge box, a leading wire, an upper arm, a lower arm, an upper spacing supporting frame, a lower spacing supporting frame, a positioning needle and knife bearings. The front ends of the upper arm and the lower arm are provided with two rotatable disk shape knife bearings in parallel. When the knife edge is worn or the knife teeth are disintegrated, the knife bearings can be rotated for continual use, and the service life is prolonged. The front ends of the upper arm and the lower arm can respectively be provided with a hook-shaped clip spring, so that the extensometer can be clamped more conveniently.
Description
The utility model belongs to the measurement mechanism class.
Existing strain ga(u)ge formula extensometer (hereinafter to be referred as extensometer) is by electric bridge box, lead-in wire, upper arm, underarm, upper limit support, lower limit support, pilot pin, cutter holds and spring is formed.The metallic elastic body is housed in the electric bridge box, and the resistance strain gage that is connected into electric bridge is attached on the metallic elastic body; Metallic elastic body in the rear end of upper and lower arm and the electric bridge box is connected; Upper and lower spacing support is contained in the inboard of upper and lower arm, and pilot pin is inserted in the pilot hole of upper and lower spacing support, plays the effect of fixing upper and lower arm.At the front end of upper and lower arm cutter is housed respectively and holds, cutter holds and is rectangle, and blade linearly.During installation, with the upper and lower blade registration coupon of extensometer, then with spring with the extensometer tighten on sample.During test, extract pilot pin, when sample be stretched (or compression), being clamped in cutter on the sample holds and produces displacement thereupon, the upper and lower arm that the connection cutter holds is delivered to this micro displacement the metallic elastic body of electric bridge box, the resistance that is attached to the resistance strain gage on the metallic elastic body is changed, and electric bridge is just exported a corresponding signal and is delivered to the demonstration of mensuration instrument by lead-in wire.Because it is rectangular that the cutter of existing extensometer holds, cutter holds blade linearly, and it contacts with round specimen is a point of fixity, in case blade abrasion or collapse tooth, extensometer will be scrapped.Secondly, extensometer uses the spring tighten to sample, inconvenient operation, and efficient is low.
Task of the present utility model is: provide a kind of long service life, easy installation and reliable extensometer.
Technical measures of the present utility model are: count the basis to hold extending of forming by electric bridge box, lead-in wire, upper arm, underarm, upper limit support, lower limit support, pilot pin, cutter; Rectangular cutter held change the garden dish type into.
Extensometer of the present utility model: since cutter to hold is the garden dish type, and can rotate, when the blade abrasion at a place or when collapsing tooth, also can continue to use as long as cutter is forwarded a moving position, so the good effect of long service life is arranged.
Fig. 1 is a structural representation of the present utility model; Fig. 2 is a vertical view.
10 is electric bridge boxes among the figure, in the metallic elastic body is housed, the resistance strain gage that is connected into bridge circuit is attached on the metallic elastic body.The rear end of upper arm 7 and underarm 11 is connected with metallic elastic body in the electric bridge box 10; The front end of upper arm 7 and underarm 11 be equipped with respectively two arranged side by side and can hold 2 by the garden dise knife that circumference is adjusted the blade position, the garden dise knife holds 2 and fixes by an adjustment screw 6 respectively, upper limit support 5, lower limit support 4 is separately fixed at upper arm 7 and underarm 11 inboards, when not using, upper limit support 5 and lower limit support 4 are fixing by pilot pin 8 series connection.Adopt hook-shaped jump ring 1 to be contained in the front end of upper and lower arm 7,11 respectively, during installation, only need hook-shaped jump ring opening part registration coupon 3 propellings are got final product, such chucking device has the characteristics that conveniently save trouble.Hold 2 blade wearing and tearing or collapse tooth as the orchard dise knife, can unclamp and adjust screw 6, the garden dise knife is forwarded moving angle,, tighten adjustment screw 6 and can reuse unspoiled blade registration coupon 3.
Claims (2)
1, a kind of strain ga(u)ge formula extensometer, hold (2) by electric bridge box (10), lead-in wire (9), upper arm (7), underarm (11), upper limit support (5), lower limit support (4), pilot pin (8), cutter and form, it is characterized in that: at the front end of upper arm (7) and underarm (11) two garden disc knife arranged side by side are housed respectively and hold (2).
2, strain ga(u)ge formula extensometer according to claim 1 is characterized in that: the front end of upper arm (7) and underarm (11) is fixed with a hook-shaped jump ring (1) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93219143 CN2164015Y (en) | 1993-08-01 | 1993-08-01 | Resistance strain gauge type stretching gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93219143 CN2164015Y (en) | 1993-08-01 | 1993-08-01 | Resistance strain gauge type stretching gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2164015Y true CN2164015Y (en) | 1994-05-04 |
Family
ID=33798608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93219143 Expired - Fee Related CN2164015Y (en) | 1993-08-01 | 1993-08-01 | Resistance strain gauge type stretching gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2164015Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506688A (en) * | 2011-10-24 | 2012-06-20 | 浙江大学 | Resistance strain thickness measuring device and measurement method thereof |
| US9551560B2 (en) | 2012-09-06 | 2017-01-24 | Illinois Tool Works Inc. | Extensometer remote arm actuation |
-
1993
- 1993-08-01 CN CN 93219143 patent/CN2164015Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506688A (en) * | 2011-10-24 | 2012-06-20 | 浙江大学 | Resistance strain thickness measuring device and measurement method thereof |
| US9551560B2 (en) | 2012-09-06 | 2017-01-24 | Illinois Tool Works Inc. | Extensometer remote arm actuation |
| CN104487797B (en) * | 2012-09-06 | 2017-06-16 | 伊利诺斯工具制品有限公司 | Extensometer remote boot server arm |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |