CN205487013U - Young modulus measuring apparatu - Google Patents
Young modulus measuring apparatu Download PDFInfo
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- CN205487013U CN205487013U CN201620045344.9U CN201620045344U CN205487013U CN 205487013 U CN205487013 U CN 205487013U CN 201620045344 U CN201620045344 U CN 201620045344U CN 205487013 U CN205487013 U CN 205487013U
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- pressure
- air pressure
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- augmentor
- air inlet
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Abstract
The utility model provides a young modulus measuring apparatu for the await measuring young modulus of wire of measurement, including the support, the wire that awaits measuring is fixed on the support top, its characterized in that: still including being fixed in the atmospheric pressure force means of support, atmospheric pressure force means includes air solenoid valve, exhaust solenoid valve, pressure regulating valve, pressure transmitter, trachea, fixed seal circle, moves movable sealing ring, atmospheric pressure movable part, urceolus, lubricating oil tank filler sleeve, four dogs, air inlet, gas vent, pressure release mouth, fixing bolt. The utility model discloses only need on original laboratory glassware's basis, will replace with atmospheric pressure force means with the afterburning mechanism that the weight constitutes by the couple. The problem of rocking of wire can effectively be solved in atmospheric pressure force means's use, and is can be in the measurement accurate, select tensile size consecutively, is favorable to the young modulus of accurate measurement tapping silk. And eliminated in the teaching potential safety hazard that the weight injures the student by a crashing object, the student can independently, conveniently accomplish the experiment.
Description
Technical field
The present invention relates to measuring instrument field, particularly relate to a kind of modulus measurer.
Background technology
Currently known, the method measuring Young's modulus in Experiment of College Physics is mainly optical lever method, and optical lever method is measured the device of Young's modulus and included optical lever system, Telescope, support, tinsel fixing device, counterweight, counterweight torr, micrometer caliper, slide gauge, meter ruler.
During current measurement, being stretched tinsel to be measured by then passing through counterweight, after the most often adding a counterweight, lower end wiry to be measured will produce rocks, cause system and cause observing the data long-time minor variations of generation because stress changes, cause reading difficulty.Furthermore, because counterbalance mass is fixed, the power that tinsel to be measured is subject to during measuring is to be interrupted, and causes data not measure continuously, is unfavorable for accurately measuring Young's modulus wiry to be measured.And, because counterweight torr is always unsettled, counterweight is easy to come off in experimentation and injures student by a crashing object, brings the biggest potential safety hazard to teaching.Additionally, telescope distance modulus measurer has a segment distance, needs a people to increase and decrease counterweight at instrument in operating process, and another people observes at telescope and records data, or a people runs between instrument and telescope back and forth, cause cannot independently, be readily achieved experiment measure.
Summary of the invention
It is an object of the invention to provide a kind of easy to operate, measure accurately, novel modulus measurer that safety is high and measuring method thereof, to eliminate the shortcomings that prior art exists.
In order to solve above technical problem, the technical scheme is that a kind of modulus measurer, be used for measuring Young's modulus wiry to be measured, including support, tinsel to be measured is fixed on cantilever tip；It is characterized in that: also include being fixed on the air pressure augmentor of described support bottom, described air pressure augmentor includes air inlet electromagnetic valve, exhaust solenoid valve, pressure-regulating valve, pressure transmitter, trachea, fixed seal ring, mobile sealing ring, air pressure movable part, urceolus, lubricant charging hole, four blocks, air inlet, air vent, pressure relief opening, fixing bolts.
External compression gas gas circuit connects air inlet electromagnetic valve, air inlet electromagnetic valve is connected with pressure-regulating valve by trachea, pressure-regulating valve is connected with pressure transmitter by trachea, pressure transmitter is connected to the air inlet of air pressure augmentor by trachea, and exhaust solenoid valve is arranged on the pressure relief opening of air pressure head.
Air pressure movable part is in inside air pressure augmentor, the fixed seal ring on top is arranged in the groove at urceolus top, the mobile sealing ring of bottom is arranged in the groove of air pressure movable part, steam vent is in urceolus bottom position, and upper end block is in below air inlet, and lower end block is in above air vent, lubricant charging hole is above the block of upper end, pressure relief opening is in above lubricant charging hole, and exhaust solenoid valve is arranged on pressure relief opening, and fixing bolt is arranged on urceolus bottom.
The length of trachea is preferably between 2 meters to 2.5 meters.
The measuring method of this modulus measurer is as follows:
The air pressure movable part of air pressure augmentor being adjusted to peak, is fixed in the fixed chuck of cantilever tip upper end wiry to be measured, lower end wiry to be measured is connected to the top of air pressure augmentor air pressure movable part；Adjust active chuck plane and mid-stent platform plane is in same level, adjust optical lever system and Telescope, the data on scale can be read from telescope；Air inlet electromagnetic valve is connected to external compression gas gas circuit, open air inlet electromagnetic valve, allow compressed air into inside air pressure augmentor, wire tensioning to be measured is made by adjusting pressure-regulating valve regulation atmospheric pressure, obtain accurate pressure values P1 by pressure transmitter, read data L1 scale from telescope；Adjusting pressure-regulating valve and increase the internal pressure of air pressure augmentor, the air pressure movable part making air pressure augmentor is descending, obtains accurate pressure values P2 by pressure transmitter, reads data L2 scale from telescope；The internal effective area of the air pressure movable part of air pressure augmentor is S ', tinsel tension F=S'* (P2-P1) to be measured；Measure vertical dimension b of the front toe line of rear toe to two of optical lever mirror holder with slide gauge, measure optical lever arrangement midplane mirror distance D to scale, deformation quantity wiry to be measured with meter rulerMeasure wire diameter d to be measured with micrometer caliper, calculate tinsel cross-sectional area S to be measured；The former long L of tinsel to be measured is measured with meter ruler；Data are substituted into the computing formula of Young's modulusTry to achieve Young's modulus wiry to be measured.
The boosting mechanism air pressure augmentor being made up of with counterweight hook only need to be substituted on the basis of original experimental apparatus by the present invention.The modulus measurer of the present invention, because upper end wiry to be measured is fixed in the fixed chuck of cantilever tip, lower end wiry to be measured is fixed on the top of air pressure augmentor air pressure movable part, and the position relationship between urceolus and air pressure movable part makes air pressure movable part can only move at vertical direction under pressure, tinsel to be measured suffered making a concerted effort in the horizontal direction is 0, therefore the present invention can solve the problem that the problem that the tinsel to be measured that original modulus measurer causes during swing weight-adding in experimentation rocks, the system of can ensure that is in steady statue.
Air pressure augmentor in the present invention applies pulling force by the effect of air pressure to tinsel to be measured, air pressure augmentor can adjust the size variation of pressure continuously, so the pulling force applying tinsel to be measured can be continually varying, therefore the present invention can solve the problem that original modulus measurer because counterbalance mass fixes the tinsel tension to be measured caused is interrupted the problem that the data caused can not be measured continuously, the present invention can choose the size of pulling force the most accurately, continuously, is conducive to accurately measuring Young's modulus wiry.
Air pressure augmentor in the present invention instead of the use of counterweight, eliminates counterweight in teaching and injures the potential safety hazard of student by a crashing object.
In the present invention, in air pressure augmentor, the use of trachea can make student one people while adjusting Pressure gauge, reads data, independently, is readily achieved experiment measurement, and the length of trachea is preferably between 2 meters to 2.5 meters.
Accompanying drawing explanation
Fig. 1 is the structural representation of the modulus measurer of the embodiment of the present invention.
1 fixed chuck 2 support 3 active chuck 4 optical lever system 5 air pressure augmentor 6 telescope 7 scale 8 clamping screw
Fig. 2 is the structural representation of the air pressure augmentor of the modulus measurer of Fig. 1.
51 air inlet electromagnetic valve 52 pressure-regulating valve 53 pressure transmitter 54 trachea 55 air inlet 56 fixed seal ring 57 air pressure movable part 58 urceolus 59 pressure relief opening 510 exhaust solenoid valve 511 lubricant charging hole 512 blocks 513 move sealing ring 514 air vent 515 and fix bolt
Detailed description of the invention
The present embodiment modulus measurer is constituted by with lower part:
Support
Pedestal lower end is base, equipped with two root posts, adjustment bolt and level gauge on base.There is a crossbeam column upper end, has a circular hole in the middle of crossbeam, and circular hole is used for accommodating fixed chuck.The middle part of column has a platform that can move up and down along column, and there is a groove platform front end, is used for placing optical lever arrangement.Having a circular hole in the middle of platform, circular hole is for accommodating the active chuck that can move up and down.
Fixed chuck
Upper end wiry to be measured is clamped in the fixed chuck on crossbeam.
Active chuck
Active chuck plane and mid-stent platform plane are in same level, and part on lower side wiry to be measured is fixed in active chuck.
Optical lever arrangement
Optical lever arrangement includes optical lever mirror holder peace face mirror, and plane mirror is contained in one end of optical lever mirror holder.
Telescope device
Telescope device includes base, scale, telescope and clamping screw, and clamping screw is used for rigid telescope and scale.
Air pressure augmentor
Air pressure augmentor is bolted to support bottom by fixing, tinsel lower end to be measured connects the upper end of air pressure augmentor air pressure movable part, and air pressure augmentor includes air inlet electromagnetic valve, exhaust solenoid valve, pressure-regulating valve, pressure transmitter, trachea, fixed seal ring, mobile sealing ring, air pressure movable part, urceolus, lubricant charging hole, four blocks, air inlet, air vent, pressure relief opening and fixing bolt.
External compression gas gas circuit connects air inlet electromagnetic valve, air inlet electromagnetic valve is connected with pressure-regulating valve by trachea, pressure-regulating valve is connected with pressure transmitter by trachea, pressure transmitter is connected to the air inlet of air pressure augmentor by trachea, and exhaust solenoid valve is arranged on the pressure relief opening of air pressure augmentor；
Air pressure movable part is inside air pressure augmentor, and there is circular hole on air pressure movable part top, to connect tinsel to be measured.
The fixed seal ring on top is arranged in the groove of urceolus upper top, and the mobile sealing ring of bottom is arranged in the groove of air pressure movable part, can move up and down with air pressure movable part, keeps air pressure augmentor inner sealing.
Air inlet electromagnetic valve: be used for connecting external compression gas gas circuit and controlling the break-make of this gas circuit.
Pressure-regulating valve: be used for regulating external compression gas gas circuit pressure, and read pressure values.
Pressure transmitter: the current signal of output 4-20mA, calculates accurate pressure values by computer.
External compression gas initially enters air inlet electromagnetic valve, subsequently into pressure-regulating valve, pressure transmitter；
Trachea: for connecting external compression gas piping and air pressure augmentor and the connection of all parts, the length of trachea is preferably between 2 meters to 2.5 meters, so that experimenter can read data while adjusting Pressure gauge, independently, it is readily achieved experiment measurement.
Sealing ring: the fixed seal ring on top is arranged in the groove of urceolus upper top, the mobile sealing ring of bottom is arranged in the groove of air pressure movable part, can move up and down with air pressure movable part, air pressure augmentor air pressure inside is formed and seals, it is ensured that have enough pressure to pull air pressure movable part to move up and down.
Air vent: at urceolus bottom position, when air pressure head activity, the pressure keeping air pressure movable part lower area is atmospheric pressure.
Exhaust solenoid valve: exhaust solenoid valve is arranged on pressure relief opening, pressure relief opening is above lubricant charging hole, after having tested, is used for laying down the internal pressure of air pressure augmentor, makes experimental provision revert to original state.
Block: upper end block is in below air inlet, lower end block is in above air vent, for limiting the range of activity of air pressure movable part.
Lubricant charging hole: above the block of upper end, for charging-up lubricant oil, to reduce the resistance between air pressure movable part and urceolus.
Fixing bolt: fixing bolt is arranged on urceolus bottom, for being fixed on base air pressure augmentor.
Micrometer caliper
For measuring diameter wiry to be measured.
Slide gauge
For measuring the vertical dimension of the front toe line of rear toe to two of optical lever mirror holder.
Meter ruler
For measuring optical lever arrangement midplane mirror to the distance of scale and former length wiry to be measured.
The measuring method of the present embodiment modulus measurer is as follows:
Carry out Young's modulus when measuring, by lubricant charging hole toward charging-up lubricant oil inside air pressure augmentor, it is ensured that the air pressure movable part of air pressure augmentor slidably, then covers tank filler sleeve.The air pressure movable part of air pressure augmentor being adjusted to peak, is then clamped in the fixed chuck in cantilever tip crossbeam upper end wiry to be measured, lower end wiry to be measured is connected to the top of air pressure augmentor air pressure movable part.
Adjust active chuck plane and mid-stent platform plane is in same level, adjust optical lever system and Telescope, the data on scale can be read from telescope.
Air inlet electromagnetic valve is connected to external compression gas piping, opens air inlet electromagnetic valve, allows compressed air into inside air pressure augmentor.Wire tensioning to be measured is made by adjusting pressure-regulating valve regulation atmospheric pressure.The pressure range that pressure-regulating valve adjusts is between 0.1 kPa to 10 kPas, and time initial, preferred pressure is 0.3 kPa.Obtain accurate pressure values P1 by pressure transmitter, then read data L1 scale from telescope.
Adjusting pressure-regulating valve and increase the internal pressure of air pressure augmentor, the air pressure movable part making air pressure augmentor is descending, obtains accurate pressure values P2 by pressure transmitter, then reads data L2 scale from telescope.
The internal effective area of the air pressure movable part of known pressure augmentor be S ' be one to determine constant value, tinsel tension F=S'* (P2-P1) the most to be measured, vertical dimension b of the front toe line of rear toe to two of optical lever mirror holder is measured with slide gauge, optical lever arrangement midplane mirror distance D to scale, deformation quantity wiry to be measured is measured with meter ruler
Can choose continuously during measuring and organize pressure values more, to obtain corresponding many groups value of thrust, be conducive to accurately measuring Young's modulus wiry to be measured.
After obtaining above experiment desired data, close air inlet electromagnetic valve, make air pressure augmentor disconnect with external compression gas gas circuit.Open exhaust solenoid valve and discharge the internal pressure of pneumatic augmentor.
Measure wire diameter d to be measured with micrometer caliper, calculate tinsel cross-sectional area S to be measured.The former long L of tinsel to be measured is measured with meter ruler.Data are substituted into the computing formula of Young's modulusJust can be in the hope of Young's modulus wiry to be measured.
Claims (1)
1. a modulus measurer, is used for measuring Young's modulus wiry to be measured, and including support, tinsel to be measured is fixed on cantilever tip；It is characterized in that: also include being fixed on the air pressure augmentor of described support bottom, described air pressure augmentor includes air inlet electromagnetic valve, exhaust solenoid valve, pressure-regulating valve, pressure transmitter, trachea, fixed seal ring, mobile sealing ring, air pressure movable part, urceolus, lubricant charging hole, four blocks, air inlet, air vent, pressure relief opening, fixing bolts；External compression gas gas circuit connects air inlet electromagnetic valve, air inlet electromagnetic valve is connected with pressure-regulating valve by trachea, pressure-regulating valve is connected with pressure transmitter by trachea, pressure transmitter is connected to the air inlet of air pressure augmentor by trachea, and exhaust solenoid valve is arranged on the pressure relief opening of air pressure augmentor；Air pressure movable part is in inside air pressure augmentor, the fixed seal ring on top is arranged in the groove at urceolus top, the mobile sealing ring of bottom is arranged in the groove of air pressure movable part, steam vent is in urceolus bottom position, and upper end block is in below air inlet, and lower end block is in above air vent, lubricant charging hole is above the block of upper end, pressure relief opening is in above lubricant charging hole, and exhaust solenoid valve is arranged on pressure relief opening, and fixing bolt is arranged on urceolus bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620045344.9U CN205487013U (en) | 2016-01-18 | 2016-01-18 | Young modulus measuring apparatu |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620045344.9U CN205487013U (en) | 2016-01-18 | 2016-01-18 | Young modulus measuring apparatu |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205487013U true CN205487013U (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620045344.9U Expired - Fee Related CN205487013U (en) | 2016-01-18 | 2016-01-18 | Young modulus measuring apparatu |
Country Status (1)
| Country | Link |
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| CN (1) | CN205487013U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105679152A (en) * | 2016-01-18 | 2016-06-15 | 滨州医学院 | Young's modulus measuring instrument and measuring method |
| CN110487986A (en) * | 2019-08-05 | 2019-11-22 | 青岛大学 | Study the evaluating apparatus and evaluation method of Volatile Organohalides release factor in sabkha |
-
2016
- 2016-01-18 CN CN201620045344.9U patent/CN205487013U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105679152A (en) * | 2016-01-18 | 2016-06-15 | 滨州医学院 | Young's modulus measuring instrument and measuring method |
| CN110487986A (en) * | 2019-08-05 | 2019-11-22 | 青岛大学 | Study the evaluating apparatus and evaluation method of Volatile Organohalides release factor in sabkha |
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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: 20160817 Termination date: 20190118 |