CN2553375Y - Pulling laser speckle interferometric loading instrument - Google Patents
Pulling laser speckle interferometric loading instrument Download PDFInfo
- Publication number
- CN2553375Y CN2553375Y CN 02275846 CN02275846U CN2553375Y CN 2553375 Y CN2553375 Y CN 2553375Y CN 02275846 CN02275846 CN 02275846 CN 02275846 U CN02275846 U CN 02275846U CN 2553375 Y CN2553375 Y CN 2553375Y
- Authority
- CN
- China
- Prior art keywords
- upper grip
- lower chuck
- screw rod
- plate
- laser speckle
- 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
A pulling laser speckle interferometric loading instrument is provided, which can be used for solid material various mechanical parameters testing. The loading instrument plays an important role in the process of testing. The utility model has simple structure, low cost but can achieve high performance and realize high success rate. The unique and good effects stand out in the testing of brittle materials.
Description
The utility model belongs to the laser measuring technique field, is a kind of pull-type sharp speckle interference measurement load apparatus that the solid material mechanics parameter is measured that is used for.
At present knownly can be used for load apparatus that laser speckle interferometry measures and divide pull-type and two kinds of pressure types, because this measurement less demanding for the pressure type load apparatus, thereby can satisfy by simple mechanical means.Requirement to pull-type load apparatus is then very high, and the one, high because the chuck of clamping test specimen to be measured must have to neutrality, otherwise test specimen can be subjected to cross component force in the process that is stretched, thus interference measurement results, even some fragility test specimen is fractureed; The 2nd, loading procedure must carry out in the darkroom gropingly, thereby load operation must be simple, and the 3rd, can not shake test specimen to be measured when loading.Owing to these reasons, the known pull-type load apparatus that is used for this measurement does not still have the instrumentation of moulding at present, all be by means of other large test equipment by complicated technology design and high precision machining, its cost all arrives between hundreds thousand of units in tens thousand of units, and the success ratio of measuring is extremely low, because the expensive and low success rate of this measurement, thereby this measurement and research are restricted.
The purpose of this utility model provides a kind of pull-type loader for measuring laser speckle interference, and it can reach the high performance requirements of load apparatus with simple structure, cheap cost, the final high success rate measured realized.
The purpose of this utility model is achieved in that on the pillar that stands on the pedal plate, and lower chuck fixed head, upper grip support plate and pulley bearing plate are housed successively.A portable plate is housed between lower chuck and lower chuck screw rod, has dug a ball impression around the center pit of portable plate downside, make a mushroom sphere at the middle part of lower chuck screw rod, and make the radius of two spheres identical.Have a transverse holes in the bottom of lower chuck screw rod, rotate the lower chuck screw rod and lock lower chuck so that penetrate latch.The lateral dimension on upper grip cap top is greater than the lateral dimension of the collet bore of upper grip support plate, thereby upper grip cap top can be supported by the upper grip support plate, and it is movingly upper and lower that its underpart then cannot not become rotatablely with the collet bore of upper grip support plate.The top of upper grip screw rod has a transverse holes, is similarly to be convenient to install latch rotation upper grip screw rod and to lock upper grip.The axle of pulley then laterally is installed on the pulley bearing plate.The horizontal adjustment screw is housed on pedal plate, on lower chuck fixed head, upper grip support plate and pulley bearing plate, trip bolt is housed respectively, to control the upper and lower position of three blocks of plates.Scale pan is then walked around pulley by steel wire and is connected with the upper grip screw rod.
Owing to adopted technique scheme, on, lower chuck and test specimen to be measured are in suspension status after connecting, this has just guaranteed the centering problem of two chucks, under the prestrain effect of scale pan, on, lower chuck and test specimen to be measured rise overally, portable plate and lower chuck fixed head at first are and contact, progressively carrying out the transition to the line contact again contacts with face, this transition is to realize by the slip between the sphere of portable plate and lower chuck screw rod sphere, the required external force of this slip is less than a gram, thereby can not make fragility test specimen to be measured influenced, when portable plate becomes face to contact with the lower chuck fixed head, on, the vertical state of lower chuck and test specimen to be measured then is fixed, and the slight vibration of adding counterweight in the measurement is then absorbed by pulley and can not cause rocking of test specimen to be measured, thereby has guaranteed the success ratio of measuring.
Below in conjunction with drawings and Examples the utility model is further specified.
1. pedal plates, 2. pedal plate screws, 3. lower chuck screw rods, 4. portable plates, 5. lower chuck fixed heads, 6. lower chucks, 7. scale pans, 8. pillars, 9. upper grips, 10. upper grip support plates, 11. upper grip caps, 12. upper grip screw rods, 13. trip bolts, 14. pulley bearing plates, 15. pulleys among the figure
In the accompanying drawing, pillar (8) stands on the pedal plate (1), lower chuck fixed head (5), upper grip support plate (10) and pulley bearing plate (14) are loaded on the pillar (8) by trip bolt (13) successively, between lower chuck (6) and lower chuck screw rod (3), a portable plate (4) is housed, the lateral dimension of portable plate makes the lower chuck afterbody can not upwards pass through the lower chuck fixed head greater than the diameter of the collet bore of lower chuck support plate.Around the center pit of portable plate (4) downside, dug a ball impression, made a mushroom sphere at the middle part of lower chuck screw rod (3), and make the radius of two spheres identical, opened a transverse holes in the bottom of lower chuck screw rod (3).Upper grip cap (11) connects as one by screw thread and upper grip (9), the lateral dimension on upper grip cap (11) top is greater than the lateral dimension of the collet bore of upper grip support plate (10), the collet bore that makes upper grip (9) afterbody can not pass through upper grip support plate (10) downwards.The center pit that upper grip screw rod (12) passes upper grip cap (11) is threaded with upper grip (9), its top has a transverse holes, on pedal plate (1) the horizontal adjustment screw is housed, scale pan (7) is then walked around pulley (15) by steel wire and is connected with upper grip screw rod (12).
Before the measurement, pass the transverse holes and the rotation of lower chuck screw rod (3) earlier with a latch, one end of test specimen to be measured is clamped in the lower chuck, allow test specimen to be measured pass the collet bore of lower chuck fixed head (5) from bottom to top and enter in the upper grip (9), regulate upper grip support plate (10) and be in one suitably highly, the top of upper grip cap (11) is supported by upper grip support plate (10), rotating upper grip screw rod (12) with pin makes upper grip (9) clamp the upper end of test specimen to be measured, on scale pan (7), add the part counterweight in advance then, its weight is slightly larger than the general assembly (TW) of pulley opposite side hanger, progressively carry out the transition to the face contact from contacting between the upper surface that makes portable plate (4) and the lower surface of lower chuck fixed head (5), so far, the assembling of pull-type loader for measuring laser speckle interference and adjustment promptly come to an end.
Claims (5)
1. pull-type loader for measuring laser speckle interference, constitute by parts such as pedal plate, pillar, lower chuck, upper grip, lower chuck fixed head, upper grip support plate, pulley bearing plate and pulleys, it is characterized in that pillar stands on the pedal plate, lower chuck fixed head, upper grip support plate and pulley bearing plate are installed on the pillar successively, pulley is installed on the pulley bearing plate, and scale pan is walked around pulley by steel wire and linked to each other with the upper grip screw rod.
2. pull-type loader for measuring laser speckle interference according to claim 1, it is characterized in that: a portable plate is housed between lower chuck and the lower chuck screw rod, around the center pit of portable plate downside, dug a ball impression, at the middle part of lower chuck screw rod one mushroom sphere is arranged, the radius of these two spheres is identical.
3. pull-type loader for measuring laser speckle interference according to claim 1 is characterized in that: the top of upper grip cap can be supported by the upper grip support plate, and it is movingly upper and lower that its underpart then cannot not become rotatablely with the collet bore of upper grip support plate.
4. pull-type loader for measuring laser speckle interference according to claim 1, it is characterized in that: the lateral dimension of portable plate is greater than the diameter of the collet bore of lower chuck fixed head, and the lateral dimension on upper grip cap top is greater than the lateral dimension of the collet bore of upper grip support plate.
5. pull-type loader for measuring laser speckle interference according to claim 1 is characterized in that: the top of the bottom of lower chuck screw rod and upper grip screw rod has a transverse holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02275846 CN2553375Y (en) | 2002-07-25 | 2002-07-25 | Pulling laser speckle interferometric loading instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02275846 CN2553375Y (en) | 2002-07-25 | 2002-07-25 | Pulling laser speckle interferometric loading instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2553375Y true CN2553375Y (en) | 2003-05-28 |
Family
ID=33739805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02275846 Expired - Fee Related CN2553375Y (en) | 2002-07-25 | 2002-07-25 | Pulling laser speckle interferometric loading instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2553375Y (en) |
-
2002
- 2002-07-25 CN CN 02275846 patent/CN2553375Y/en not_active Expired - Fee Related
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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 |