CN202974770U - Young modulus measurer - Google Patents

Young modulus measurer Download PDF

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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
Authority
CN
China
Prior art keywords
pressure
hydraulic
hook
pressure transducer
modulus measurer
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
Application number
CN 201220680678
Other languages
Chinese (zh)
Inventor
张海涛
杨北革
赵锐
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Datong Power Supply Co of State Grid Shanxi Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Datong Power Supply Co of State Grid Shanxi Electric Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, Datong Power Supply Co of State Grid Shanxi Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN 201220680678 priority Critical patent/CN202974770U/en
Application granted granted Critical
Publication of CN202974770U publication Critical patent/CN202974770U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a Young modulus measurer, which comprises an optical lever, a telescope, a hook and a ruler. The Young modulus measurer is characterized in that the lower end of the hook connected with a measured object is connected with a hydraulic force applying device; a liquid bag is mounted at the bottom of an inner chamber of a pressure box of the hydraulic force applying device; the lower surface of the liquid bag is contacted with the bottom surface of the inner chamber of the pressure box; the upper surface of the liquid bag is contacted with a pressure sensor; the pressure sensor is connected with two force bearing rods that are arranged in a bilateral symmetry manner and extend out of the inner chamber of the pressure box; the other end of each force bearing rod is fixed on a crossbeam by a fixing cap; and the pressure of the liquid bag is regulated by a hydraulic regulating valve so that axial pull force is applied on the measured object. The Young modulus measurer using a tensile method, according to the utility model, can ensure that a system can be at a stable status all the time and can flexibly and precisely select suitable pull force according to different measured objects, thereby preventing the limitation of the range of the measured object due to constant quality of weights.

Description

Modulus measurer
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:
E = F S ΔL L
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)

1. 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, 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.
2. modulus measurer according to claim 1, wherein said pressure transducer is the resistance strain gage pressure transducer.
3. modulus measurer according to claim 1, wherein said pressure transducer have the digital display liquid crystal display that shows pressure value.
CN 201220680678 2012-12-11 2012-12-11 Young modulus measurer Expired - Fee Related CN202974770U (en)

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)

* Cited by examiner, † Cited by third party
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 kind of alternating temperature modulus measurer

Cited By (4)

* Cited by examiner, † Cited by third party
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 kind of alternating temperature modulus measurer

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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
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130605

Termination date: 20191211