CN205808677U - A kind of measuring device of spring stiffness coefficient - Google Patents
A kind of measuring device of spring stiffness coefficient Download PDFInfo
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- CN205808677U CN205808677U CN201520999114.1U CN201520999114U CN205808677U CN 205808677 U CN205808677 U CN 205808677U CN 201520999114 U CN201520999114 U CN 201520999114U CN 205808677 U CN205808677 U CN 205808677U
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- fixed pulley
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Abstract
The utility model discloses a kind of measuring device of spring stiffness coefficient, including spring ergometer, rule, the first fixed pulley, the first funnel, the second fixed pulley, the second funnel, salt bath and tested spring, the ergographic one end of spring is fixed, the ergographic other end of spring is by connecting between the second fixed pulley and the second funnel, one end of rule is fixed in one end of tested spring, the other end of tested spring is connected by the first fixed pulley and the first funnel, first funnel is positioned at the surface of the second funnel, and salt bath is positioned at the underface of the second funnel.This utility model controls spring elongation by observing the size of experiment situation of change in funnel, the formula of this device checking spring connection in series-parallel rear spring stiffness factor can be directly utilized in teaching process, experimental technique of the present utility model can make student be easy to grasp principle of knowledge in teaching, be conducive to students scientific knowledge, there is the value of popularization and application.
Description
Technical field
This utility model relates to a kind of physical experimental method, particularly relates to a kind of measuring device of spring stiffness coefficient.
Background technology
Stiffness factor, the i.e. coefficient of stiffiness (coefficient of elasticity).It describes the size of produced elastic force during unit deformation quantity.K value
Greatly, illustrate that the power that deformation unit length needs is big, spring " tough " in other words.Stiffness factor is also known as stiffness coefficient or stubborn system
Number.Stiffness factor is numerically equal to elastic force during spring elongation (or shortening) unit length.In prior art, test spring
Stiffness factor more bothers, intricate operation, and efficiency is low, not accurate enough, accordingly, there exist room for improvement.
Utility model content
The purpose of this utility model is that provides a kind of measuring device of spring stiffness coefficient to solve the problems referred to above.
This utility model is achieved through the following technical solutions above-mentioned purpose:
This utility model one measuring device of spring stiffness coefficient, including spring ergometer, rule, the first fixed pulley,
One funnel, the second fixed pulley, the second funnel, salt bath and tested spring, the ergographic one end of described spring fixes, and described spring is surveyed
The other end of power device is by being connected between described second fixed pulley with described second funnel, and one end of described tested spring is fixed on
One end of described rule, the other end of described tested spring is connected with described first funnel by described first fixed pulley, institute
Stating the first funnel and be positioned at the surface of described second funnel, described salt bath is positioned at the underface of described second funnel, and described first
It is provided with switch on funnel and described second funnel.
The beneficial effects of the utility model are:
This utility model is a kind of measuring device of spring stiffness coefficient, and compared with prior art, this utility model is by observing
Size of experiment situation of change in funnel controls spring elongation, and this process make use of reverse thinking can fully allow classmate slap
Hold this kind of theory, used " conversion " thought to change decrement into increments cleverly, directly used weight beam to measure power,
The formula of this device checking spring connection in series-parallel rear spring stiffness factor, reality of the present utility model can be directly utilized in teaching process
Proved recipe method can make student be easy to grasp principle of knowledge in teaching, and beneficially students scientific knowledge, has popularization
The value of application.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1-spring ergometer, 2-rule, 3-the first fixed pulley, 4-the first funnel, 5-the second fixed pulley, 6-
Two funnels, 7-salt bath, the tested spring of 8-.
Detailed description of the invention
The utility model is described in further detail below in conjunction with the accompanying drawings:
As shown in Figure 1: this utility model one measuring device of spring stiffness coefficient, including spring ergometer 1, rule 2,
One fixed pulley the 3, first funnel the 4, second fixed pulley the 5, second funnel 6, salt bath 7 and tested spring 8, described spring ergometer 1
One end is fixed, and the other end of described spring ergometer 1 passes through to be connected between described second fixed pulley 5 with described second funnel 6, institute
One end of described rule 2 is fixed in the one end stating tested spring 8, and the other end of described tested spring 8 is fixed by described first
Pulley 3 is connected with described first funnel 4, and described first funnel 4 is positioned at the surface of described second funnel 6, and described salt bath 7 is positioned at
It is provided with switch on the underface of described second funnel 6, described first funnel 4 and described second funnel 6.
The method of testing of this utility model measuring device of spring stiffness coefficient, comprises the following steps:
(1) after fixing for tested spring, spring ergometer 1 is returned to zero, the first funnel 4 and the second funnel 6 are closed simultaneously；
(2) any amount Sal is put into the first funnel 4, write down rule 2 reading that tested spring 8 elongation is corresponding；
(3) open the first funnel 4, make part Sal flow in the second funnel 6, close the first funnel 4, record tested simultaneously
Scale value X2 of spring 8 and the numerical value F1 of spring ergometer 1；Open the second funnel 6, make Sal in the second funnel 6 all flow
Turn off the second funnel 6；
(4) △ X1=X2 X1, K1=F1/ △ X1 are calculated by " X1, X2 "；
(5) repeat the above steps can obtain K2=F2/ △ X2, K3=F3/ △ X3；
(6) stiffness factor of the most tested spring 8 is: KA=(K1+K+K3)=(F1/ △ X1+F2/ △ X2+F3/ △ X3)/
3；
(7) tested spring is changed to the tested spring of another one 8, the step of repeated measure stiffness factor, can be obtained another
Stiffness factor KB=(the K1+K2+K3)/3=(F1/ △ X1+F2/ △ X2+F3/ △ X3)/3 of tested spring 8；
(8) two tested springs 8 are connected, repeat above step, obtain the equivalent spring stiffness system of two tested springs 8
Number K string；
(9) equivalent stiffness coefficient formula 1/K string=1/KA+1/KB after the series connection of checking spring；
(10) two tested springs 8 are in parallel, repeat above step, total spring after obtaining the parallel connection of two tested springs 8
Stiffness factor K also；
(11) checking spring parallel connection after equivalence stiffness factor formula K also=KA+KB.
DATA REASONING
The stiffness factor K of spring AA
The stiffness factor K of table 1 spring AA
KA=(K1+K2+K3)/3=(F1/△X1+F2/△X2+F3/△X3)/3=0.377N/cm
The stiffness factor K of spring BB
The stiffness factor K of table 2 spring BB
KB=(K1+K2+K3)/3=(F1/△X1+F2/△X2+F3/△X3)/3=0.231N/cm
Stiffness factor K after series connectionString
Stiffness factor K after table 3 series connectionString
KString=(K1+K2+K3)/3=(F1/△X1+F2/△X2+F3/△X3)/3=0.143N/cm
And according to formula 1/KString (theoretical)=1/KA+1/KBObtain KString (theoretical)=0.141N/cm
KString (theoretical)≈KString
So this formula is correct in experimental error.
Stiffness factor K after parallel connectionAnd
Stiffness factor K after table 4 parallel connectionAnd
KAnd=(K1+K2+K3)/3=(F1/△X1+F2/△X2+F3/△X3)/3=0.604N/cm
And according to formula KAnd (theoretical)=KA+KBObtain KAnd (theoretical)=0.608N/cm
KAnd (theoretical)≈KAnd
So this formula is correct in experimental error.
Of the present utility model ultimate principle and principal character and of the present utility model advantage have more than been shown and described.One's own profession
Skilled person will appreciate that of industry, this utility model is not restricted to the described embodiments, described in above-described embodiment and description
Principle of the present utility model is simply described, on the premise of without departing from this utility model spirit and scope, this utility model is also
Have various changes and modifications, in the range of these changes and improvements both fall within claimed this utility model.This utility model
Claimed scope is defined by appending claims and equivalent thereof.
Claims (1)
1. a measuring device of spring stiffness coefficient, it is characterised in that: include spring ergometer, rule, the first fixed pulley, first
Funnel, the second fixed pulley, the second funnel, salt bath and tested spring, the ergographic one end of described spring fixes, described spring dynamometry
The other end of device is by being connected between described second fixed pulley with described second funnel, and institute is fixed in one end of described tested spring
Stating one end of rule, the other end of described tested spring is connected with described first funnel by described first fixed pulley, described
First funnel is positioned at the surface of described second funnel, and described salt bath is positioned at the underface of described second funnel, described first leakage
It is provided with switch on bucket and described second funnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520999114.1U CN205808677U (en) | 2015-12-06 | 2015-12-06 | A kind of measuring device of spring stiffness coefficient |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520999114.1U CN205808677U (en) | 2015-12-06 | 2015-12-06 | A kind of measuring device of spring stiffness coefficient |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205808677U true CN205808677U (en) | 2016-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520999114.1U Expired - Fee Related CN205808677U (en) | 2015-12-06 | 2015-12-06 | A kind of measuring device of spring stiffness coefficient |
Country Status (1)
| Country | Link |
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| CN (1) | CN205808677U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105334041A (en) * | 2015-12-06 | 2016-02-17 | 商洛学院 | Measuring instrument for stiffness coefficient of spring |
| CN107036804A (en) * | 2017-06-13 | 2017-08-11 | 衡阳师范学院 | The device of batch detection device of spring stiffness coefficient |
| CN108088739A (en) * | 2017-11-13 | 2018-05-29 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of fast matching method of dish-shaped-spring stack |
-
2015
- 2015-12-06 CN CN201520999114.1U patent/CN205808677U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105334041A (en) * | 2015-12-06 | 2016-02-17 | 商洛学院 | Measuring instrument for stiffness coefficient of spring |
| CN105334041B (en) * | 2015-12-06 | 2019-09-13 | 商洛学院 | A kind of measurement method of measuring device of spring stiffness coefficient |
| CN107036804A (en) * | 2017-06-13 | 2017-08-11 | 衡阳师范学院 | The device of batch detection device of spring stiffness coefficient |
| CN107036804B (en) * | 2017-06-13 | 2023-10-17 | 衡阳师范学院 | Device for detecting spring stiffness coefficients in batches |
| CN108088739A (en) * | 2017-11-13 | 2018-05-29 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of fast matching method of dish-shaped-spring stack |
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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: 20161214 Termination date: 20171206 |