CN86201975U - Strain type multifunction testing instrument - Google Patents
Strain type multifunction testing instrument Download PDFInfo
- Publication number
- CN86201975U CN86201975U CN 86201975 CN86201975U CN86201975U CN 86201975 U CN86201975 U CN 86201975U CN 86201975 CN86201975 CN 86201975 CN 86201975 U CN86201975 U CN 86201975U CN 86201975 U CN86201975 U CN 86201975U
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- China
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- strain
- stress
- sensing element
- testing instrument
- type multifunction
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Abstract
The utility model relates to an experimental device for testing the strain (stress) of parts. The strain type multifunction testing instrument can test single strain (stress), such as stretching, compression, pure bending pure torsion, etc., and the strain type multifunction testing instrument can test any desired strain (stress) excluding the influence of other stress to be tested through a proper group-bridge under the condition of combined loading. Therefore, the strain type multifunction testing instrument has the advantages of multiple functions, small vlume, high sensitivity, strong practicability, etc., and the strain type multifunction testing instrument is requisite equipment for strain testing and stress analysis experiments in secondary technical schools.
Description
The utility model relates to a kind of experimental provision of other part strain (stress) usefulness of test
At present, the main experimental provision of testing other part strain (stress) is the beam of uniform strength and bending beam, and this class experimental provision can only provide the measurement of single strain (stress).Therefore, the experiment content of the cloth sheet of part under the compound stress state and group bridge just can't carry out in addition.
The purpose of inventing this device is to design and a kind ofly can loads and record these stretchings, compression, pure bending respectively and purely single strain (stress) such as reverse on device, can unite under the condition of loading again, can get rid of the influence of other non-tested stress by suitable group bridge and measure required any one strain (stress).
The main points of this device are to adopt the rear end of a hollow to be fixed on sensing element (4) on the base (7), and its front end is in cantilever position, and the middle part of sensing element (4) is a thin cylinder, pastes a plurality of foil gauges in its appearance.A tension and compression axle (5) is installed in the hole of sensing element (4).The rear portion of tension and compression axle (5) is the targeting part that has a rectangle moving tooth, and the endoporus of sensing element (4) adopts movingly.
The structural drawing of Fig. 1 strain-type comprehensive experimental device.
Fig. 2 sensing element
Fig. 3 tension and compression axle
Concrete device and working condition below in conjunction with description of drawings the present invention proposition.
A tension and compression axle (5) is installed in the endoporus of sensing element (4), and the endoporus of the targeting part of tension and compression axle (5) rear end and sensing element (4) fixed part is movingly; The diameter of intermediate portion is slightly smaller than the diameter of targeting part.Contact with thin cylinder avoiding; Its point diameter is bigger than the diameter of targeting part, and its inner side end is pressed on the step of sensing element front end endoporus, in the center hole of tension and compression axle front end steel ball is housed, and steel ball contacts with plug.The rectangle moving tooth is meshed on Baltimore groove on loading wheel (2) axle and the tension and compression axle, loading on wheel (2) cylindrical is that two ropes are arranged, when loading for respectively these two ropes, can make and load wheel (2) forward or reverse, thereby drive tension and compression axles (5) axially seesaw, and are just drawn on sensing element (4), compressive stress.When adding carrying force on the plug (1) of sensing element (4) front end, sensing element (4) obtains plain bending stress.If expect pure bending stress, as long as at position loading one and the equal gravity of plane bending load by reverse wheel (9,10), sensing element just can obtain a pure couple.Front end at sensing element is equipped with loading wheel (8), (8) are taken turns in loading and sensing element (4) is used key connecting, when a side that loads wheel (8) loads, when adding same load, sensing element (4) just obtains pure distorting stress to opposite side by reverse wheel (10).
At the outside surface of sensing element (4) thin cylinder, according to surveying the relevant cloth sheet method stickup foil gauge of measuring various stress in the theory.
Reduce friction for improving measuring accuracy, this installs all rotating parts and all adopts rolling bearing.
The advantages such as this device has a tractor serves several purposes, and volume is little, and is highly sensitive, practical not only can be used for the in addition experiment of part strain (stress) measurement in the measuring technology course, and can be used for the lecture experiment of strain in the material mechanics course (stress).
Claims (3)
1, a kind of strain-type comprehensive experimental device, by loading wheel (2.8), reverse wheel (6,9,10), base (7), plug compositions such as (1), it is characterized in that cooperating in the endoporus of sensing element (4) a tension and compression axle (5), the rear end of sensing element (4) is fixed on the base (7), makes its front end be in cantilever position.
2, strain-type comprehensive experimental device according to claim 1 is characterized in that sensing element (4) is the rounded thin-walled elastic bar in its middle part of a hollow.And paste foil gauge at the outside surface at its thin-walled position.
3, strain-type comprehensive experimental device according to claim 1 is characterized in that the rear portion of tension and compression axle (5) is a targeting part, and its diameter is slightly less than front end, and greater than center section, at the targeting part fluting of tension and compression axle and leave a rectangle moving tooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86201975 CN86201975U (en) | 1986-04-06 | 1986-04-06 | Strain type multifunction testing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86201975 CN86201975U (en) | 1986-04-06 | 1986-04-06 | Strain type multifunction testing instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86201975U true CN86201975U (en) | 1987-05-27 |
Family
ID=4805615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86201975 Ceased CN86201975U (en) | 1986-04-06 | 1986-04-06 | Strain type multifunction testing instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86201975U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106781894A (en) * | 2015-03-13 | 2017-05-31 | 郭淑华 | One kind teaching tensile test apparatus |
-
1986
- 1986-04-06 CN CN 86201975 patent/CN86201975U/en not_active Ceased
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106781894A (en) * | 2015-03-13 | 2017-05-31 | 郭淑华 | One kind teaching tensile test apparatus |
| CN106781894B (en) * | 2015-03-13 | 2019-07-02 | 南京牧信科技有限公司 | A kind of teaching tensile test apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CE01 | Termination of patent right | ||
| CE01 | Termination of patent right |