CN202974770U - Young modulus measurer - Google Patents
Young modulus measurer Download PDFInfo
- Publication number
- CN202974770U CN202974770U CN 201220680678 CN201220680678U CN202974770U CN 202974770 U CN202974770 U CN 202974770U CN 201220680678 CN201220680678 CN 201220680678 CN 201220680678 U CN201220680678 U CN 201220680678U CN 202974770 U CN202974770 U CN 202974770U
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- Prior art keywords
- pressure
- inner cavity
- pressure sensor
- young
- hook
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- 239000007788 liquid Substances 0.000 claims abstract description 19
- 230000001105 regulatory effect Effects 0.000 claims abstract description 5
- 239000004973 liquid crystal related substance Substances 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 abstract description 8
- 238000005259 measurement Methods 0.000 abstract description 2
- 239000002775 capsule Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 8
- 238000002474 experimental method Methods 0.000 description 4
- 230000005489 elastic deformation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
本实用新型提供了一种杨氏模量测量仪，其包括：光杠杆、望远镜、挂钩和标尺，其特征在于：与被测物连接的挂钩下端连接液压加力装置，所述液压加力装置的压力盒内腔底部安装有液囊，液囊下表面接触压力盒内腔底部表面，液囊上表面与压力传感器接触，所述压力传感器与左右对称布置的两根伸出压力盒内腔的承力杆连接，承力杆的另一端通过固定帽固定在横梁上；通过液压调节阀调节所述液囊的压力，从而对被测物体施加轴向拉力。本实用新型的拉伸法杨氏模量测量仪可以保证系统随时都处于稳定状态，并且可以针对不同的测量对象灵活、精确地选取适当的拉力，从而避免了砝码质量固定对测试对象范围的限制。
The utility model provides a Young's modulus measuring instrument, which includes: an optical lever, a telescope, a hook and a scale, and is characterized in that: the lower end of the hook connected with the measured object is connected with a hydraulic force device, and the hydraulic force device A liquid bladder is installed at the bottom of the inner cavity of the pressure box, the lower surface of the liquid bladder contacts the bottom surface of the inner cavity of the pressure box, the upper surface of the liquid bladder contacts the pressure sensor, and the pressure sensor is in contact with two symmetrically arranged left and right protruding from the inner cavity of the pressure box. The load-bearing rod is connected, and the other end of the load-bearing rod is fixed on the beam through a fixed cap; the pressure of the liquid bag is adjusted through a hydraulic regulating valve, thereby exerting an axial tension on the measured object. The tensile Young's modulus measuring instrument of the utility model can ensure that the system is in a stable state at any time, and can flexibly and accurately select an appropriate tensile force for different measurement objects, thereby avoiding the influence of the fixed weight on the range of the test object. limit.
Description
Technical field
The utility model relates to a kind of teaching experimental equipment, specifically refers to utilize pulling method to measure the experiment instrument of Young modulus wiry, belongs to the Physical Experiment field of measuring technique.
Background technology
Under external force, the change of shape that occurs of solid becomes deformation.It can be divided into two kinds of elastic deformation and plastic deformations.In this experiment, only study wire elastic deformation, for this reason, should control the size of external force, after guaranteeing that external force is removed, the object resilient.
The simplest deformation is elongation and the shortening after tinsel is subject to external force.Metal filament length L, sectional area are S, and after application of force F, the elongation Δ L of object in elastic limit wiry, has along its length:
We call Young's modulus of elasticity to E.In physical test, often with stripe object (as steel wire, Metallic rod etc.) elastic modulus longitudinally Young modulus.
Pulling method is to utilize hook to be fixed counterweight tinsel is applied pulling force, then utilizes optical lever amplify small elongation wiry and measure.The weak point of optical lever method tester is:
1, change at every turn that swinging all can appear in tinsel after counterbalance mass, must treat that it can measure after settling out, also therefore be subjected to environmental influence larger, some little vibrations and larger Air Flow all can impact experiment;
2, counterbalance mass is fixed, can not be according to the size of measuring object flexible choice pulling force, thus limited to a great extent the scope of measuring object.
The utility model content
In order to have solved the problem of optical lever method tester stability aspect, the utility model provides a kind of easy to operate, clear reading, measurement accurate tinsel modulus measurer.
in order to solve the problems of the technologies described above, the utility model adopts following technical scheme: a kind of modulus measurer, it comprises: optical lever, telescope, hook and scale, it is characterized in that: the hook lower end connection hydraulic pressure augmentor that is connected with measured object, the pressure cell intracavity bottom of described hydraulic amplifier device is equipped with the liquid capsule, liquid capsule lower surface contact box intracavity bottom surface, liquid capsule upper surface contacts with pressure transducer, described pressure transducer is connected with two bearing rods that stretch out the pressure cell inner chamber that are symmetrically arranged, the other end of bearing rod is fixed on crossbeam by locking cap, by the pressure of the described liquid capsule of hydraulic regulation valve regulation, thereby testee is applied axial tension.
Preferably, described pressure transducer is the resistance strain gage pressure transducer.
Preferably, described pressure transducer has the digital display liquid crystal display that shows pressure value.
The utility model is intended to improve the measuring method of optical lever system, only needs on the basis of original experimental apparatus, will be substituted with pressure transducer and hydraulic amplifier device with the boosting mechanism that counterweight consists of by hook.This instrument partly uses precision resister foil gauge compressive force sensor to coordinate the hydraulic pressure augmentor at boosting mechanism, can effectively solve the stability of instrument problem.Owing to regulating hydraulic pressure by the rotating hydraulic variable valve, make the liquid capsule that pressure cell is exerted pressure, hydraulic amplifier device fluid,matching capsule applies pulling force by hook to tested object; The resistance strain gage pressure transducer that locking cap and bearing rod hang is the gaging pressure size in real time, the system that can guarantee all is in steady state (SS) at any time, realize namely afterburning, namely measure, thereby the problem that the tested object of having avoided " counterweight ten hooks " form to cause rocks, extraneous vibration and Air Flow can not have any impact to instrument simultaneously.And can flexibly, accurately choose suitable pulling force for different measuring objects, as selecting to apply large pulling force to the large tested object of Young modulus, otherwise can select to apply little pulling force, the size of pulling force can reflect by pressure transducer intuitively, and show the pulling force size that applies by the digital display liquid crystal display, thereby avoided the fixing restriction to the tested object scope of counterbalance mass.
Description of drawings
Fig. 1 is the schematic diagram of pulling method modulus measurer of the present utility model;
Fig. 2 is the structural representation of hydraulic amplifier device in pulling method modulus measurer of the present utility model.
In figure, Reference numeral represents respectively: 1. tinsel, 2. optical lever, 3. hydraulic amplifier device, 4, scale, 5. telescope, 6. locking cap, 7. crossbeam, 8. pressure transducer, 9. digital display liquid crystal display, 10. liquid capsule, 11. pressure cells, 12. hydraulic regulating valves.
Embodiment
A kind of modulus measurer, it comprises: optical lever, telescope, hook and scale, it is characterized in that: the hook lower end connection hydraulic pressure augmentor that is connected with measured object, the pressure cell intracavity bottom of described hydraulic amplifier device is equipped with the liquid capsule, liquid capsule lower surface contact box intracavity bottom surface, liquid capsule upper surface contacts with the resistance strain gage pressure transducer with the digital display liquid crystal display that shows pressure value.Described pressure transducer is connected with two bearing rods that stretch out the pressure cell inner chamber that are symmetrically arranged, and the other end of bearing rod is fixed on crossbeam by locking cap; By the pressure of the described liquid capsule of hydraulic regulation valve regulation, thereby testee is applied axial tension.
Owing to regulating hydraulic pressure by the rotating hydraulic variable valve, make the liquid capsule that pressure cell is exerted pressure, hydraulic amplifier device fluid,matching capsule applies pulling force by hook to tested object, the system that can guarantee all is in steady state (SS) at any time, realize namely afterburning, namely measure, thus the problem that the tested object of having avoided " counterweight ten hooks " form to cause rocks, and extraneous vibration and Air Flow can not have any impact to instrument simultaneously.And can flexibly, accurately choose suitable pulling force for different measuring objects, as selecting to apply large pulling force to the large tested object of Young modulus, otherwise can select to apply little pulling force, the size of pulling force can reflect by pressure transducer intuitively, and show the pulling force size that applies by the digital display liquid crystal display, thereby avoided the fixing restriction to the tested object scope of counterbalance mass.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220680678 CN202974770U (en) | 2012-12-11 | 2012-12-11 | Young modulus measurer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220680678 CN202974770U (en) | 2012-12-11 | 2012-12-11 | Young modulus measurer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202974770U true CN202974770U (en) | 2013-06-05 |
Family
ID=48515828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220680678 Expired - Fee Related CN202974770U (en) | 2012-12-11 | 2012-12-11 | Young modulus measurer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202974770U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103411838A (en) * | 2013-07-30 | 2013-11-27 | 内蒙古科技大学 | Method and device for measuring small elongation of solid material by using levers and Hall integrator |
| CN105679152A (en) * | 2016-01-18 | 2016-06-15 | 滨州医学院 | Young's modulus measuring instrument and measuring method |
| CN110146387A (en) * | 2019-04-29 | 2019-08-20 | 浙江师范大学 | A variable temperature Young's modulus measuring instrument |
-
2012
- 2012-12-11 CN CN 201220680678 patent/CN202974770U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103411838A (en) * | 2013-07-30 | 2013-11-27 | 内蒙古科技大学 | Method and device for measuring small elongation of solid material by using levers and Hall integrator |
| CN103411838B (en) * | 2013-07-30 | 2016-06-08 | 内蒙古科技大学 | Method and the device of solid material Chroococcus minutus is measured by lever and Hall integrator |
| CN105679152A (en) * | 2016-01-18 | 2016-06-15 | 滨州医学院 | Young's modulus measuring instrument and measuring method |
| CN110146387A (en) * | 2019-04-29 | 2019-08-20 | 浙江师范大学 | A variable temperature Young's modulus measuring instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20191211 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |