SU90712A1 - Safety device for strain gauges - Google Patents
Safety device for strain gaugesInfo
- Publication number
- SU90712A1 SU90712A1 SU418607A SU418607A SU90712A1 SU 90712 A1 SU90712 A1 SU 90712A1 SU 418607 A SU418607 A SU 418607A SU 418607 A SU418607 A SU 418607A SU 90712 A1 SU90712 A1 SU 90712A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- wedge
- roller
- strain gauge
- safety device
- strain gauges
- Prior art date
Links
- 230000005236 sound signal Effects 0.000 claims description 3
- 230000036633 rest Effects 0.000 claims description 2
- 239000004606 Fillers/Extenders Substances 0.000 description 2
Description
Предметом изобретени вл етс приспособление дл предохранени тензометра от повреждени в момент разрушени раст гиваемого образца.The subject of the invention is a device for protecting the strain gauge from damage at the time of destruction of the sample to be stretched.
Отличительна особенность предлагаемого приспособлени заключаетс в применении подвижного клина, укрепл емого струбцинкой на испытуемом образце, перемещаемого в продольном направлении посредством микрометрического винта и удлинител , скрепленного с концом базы тензометра и снабженного роликом, который в момент разрушени образца упираетс в клин и приподнимает подвижную призму тензометра . Клин и ролик включены в электрическую цепь, снабженную световым или звуковым сигналом, предупреждаюш,им о моменте их соприкасани .A distinctive feature of the proposed fixture is the use of a movable wedge secured with a clamp on the test specimen, moved in the longitudinal direction by means of a micrometer screw and extender attached to the end of the strain gauge base and fitted with a roller, which at the time of specimen destruction abuts the wedge and lifts the movable prism of the tensometer. The wedge and roller are included in an electrical circuit, equipped with a light or sound signal, warning them about the moment of their contact.
Такое устройство описываемого приспособлени дает возможность производить измерение линейной деформации при раст жении испытуемого образца без риска повредить тензометр в момент разрушени образца .Such a device of the described device makes it possible to measure linear deformation when the test specimen is stretched without the risk of damaging the strain gauge at the time the specimen is destroyed.
На фиг. 1 показан тензометр, установленный на образце и снабженный приспособлением; на фиг. 2 - поперечный разрез приспособлени по /-/.FIG. 1 shows a strain gauge mounted on a sample and fitted with a fixture; in fig. 2 is a cross section of the device according to / - /.
На испытуемый образец / при помош.и струбцины 2 укрепл етс клин 3, перемещаемый в продольном направлении микрометрическим винтом 4. Удлинитель 5, скрепленный с концом базы 6 тензометра 7, снабжен роликом 8, который по отношению к клину 3 имеет небольшой зазор, устанавливаемый микрометрическим винтом 4.A wedge 3 is fastened to the test sample / clamps 2 and clamped in the longitudinal direction with a micrometer screw 4. The extender 5, attached to the end of the base 6 of the strain gauge 7, is equipped with a roller 8, which, in relation to the wedge 3, has a small gap set by the micrometer screw 4.
При разрушении образца / между опорными точками тензометра 7 ролик 8 упираетс в клин 3 и приподнимает подвижную призму 9 тензометра от поверхности образца, с целью предохранени призмы от разрушени .When the sample is destroyed / between the reference points of the strain gauge 7, the roller 8 rests on the wedge 3 and lifts the movable prism 9 of the strain gauge from the sample surface in order to protect the prism from destruction.
Клпн 3 и ролик 8 включены посредством клемм 10, 11 ъ электрическую цепь, снабженную световым или звуковым сигналом, предупреждающим о моменте соприкосновени клина и ролика.Klpn 3 and roller 8 are connected via terminals 10, 11 to an electrical circuit supplied with a light or sound signal warning of the moment of contact between the wedge and roller.
Предмет изобретени Subject invention
Claims (2)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU90712A1 true SU90712A1 (en) | 1951-06-30 |
Family
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