CN206574336U - A kind of three-line pendulum for adapting to rotary inertia more - Google Patents
A kind of three-line pendulum for adapting to rotary inertia more Download PDFInfo
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- CN206574336U CN206574336U CN201620916528.8U CN201620916528U CN206574336U CN 206574336 U CN206574336 U CN 206574336U CN 201620916528 U CN201620916528 U CN 201620916528U CN 206574336 U CN206574336 U CN 206574336U
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- rotary inertia
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Abstract
The utility model belongs to rotation inerttia technical field, it is related to a kind of three-line pendulum for adapting to rotary inertia more, including support, base, the upper disk being installed on support and the lower outstanding disk being connected with upper disk by suspension wire, the support both sides are double-rod structure, top is cross bar, the double-rod of the support both sides is fixed on base, the lower outstanding disk is connected by three symmetrical fine rules with the upper disk, outstanding disk lateral surface is symmetrically installed with three rods that are in the light, lower outstanding disk card on trisection posistion and is carved with position line down.Three-line pendulum of the present utility model can realize the checking of the rotation inerttia of multiple diameter annulus, cylinder or cylinder and the rotary inertia parallel-axis theorem of multiple diameter annulus, cylinder or cylinder.
Description
Technical field
The utility model is related to a kind of rotation inerttia instrument, can be fitted more particularly, to a kind of Stability Analysis of Structures, chassis
The three-line pendulum of multiple diameter annulus, cylindrical object rotary inertia and parallel-axis theorem checking is answered, belongs to rotation inerttia skill
Art field.
Background technology
At present the method for the object rotation inertia of experiment measurement both at home and abroad typically have three-line pendulum, rock, physical pendulum etc..Three-line pendulum is
By twist motion determine object rotary inertia, be characterized in physical image understand, it is easy to operation, be adapted to it is variously-shaped
Object, such as machine components, rotor, firearms bullet, the rotary inertia of the fan blade of electric fan can all be determined with three-line pendulum.
This experimental method has certain practical significance in theoretical and technology.
Laboratory is typically chosen uniform regular object and tested, wherein shape is with circle when measuring object rotation inertia
Post, annulus, cylinder, ball are many, and so the Experiment of Moment of Inertia value and theoretical value of regular uniform object can be surveyed simultaneously
Amount and calculating, it is convenient to carry out the comparison of experiment value and theoretical value, so as to realize to experiment value calculating and the checking of parallel-axis theorem.
But current various devices can only all be verified to specific above-mentioned regular object, it is impossible to which irregularly shaped object is measured,
Therefore the utility model is improved to current existing three-line pendulum rotational inertia tester makes it to be carried out to irregularly shaped object
The measurement and checking of related experiment.
The content of the invention
Technical problem to be solved in the utility model is that the defect for overcoming prior art is stablized and energy there is provided a kind of chassis
The three-line pendulum of enough many adaptation rotary inertias verified to multiple diameter annulus, cylindrical object rotary inertia and parallel-axis theorem.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is：
A kind of three-line pendulum for adapting to rotary inertia more, including support, base, the upper disk that is installed on support and with it is upper
The lower outstanding disk that disk is connected by suspension wire, the support both sides are double-rod structure, and top is cross bar, the double-rod of the support both sides
It is fixed on base, the lower outstanding disk is connected by three symmetrical fine rules with the upper disk, lower outstanding disk lateral surface exists
It is symmetrically installed with trisection posistion in three rods that are in the light, lower outstanding disk card and is carved with position line.
As the improved technical scheme of the utility model, the position line in the lower outstanding disk card is three groups of equidistant concentric circles
With two groups of big non-concentric such as symmetrically；It is the center of circle, another two groups that disk is hanged below three groups of equidistant equidistant concentric circles of concentric circles one of which
The center of circle of equidistant concentric circles position line is located at the lower outstanding symmetrical both sides in the disk center of circle；Two groups symmetrically etc. big non-concentric position line uniformly divide
Cloth and the center of circle are located at the lower outstanding symmetrical both sides in the disk center of circle.
As the further improved technical scheme of the utility model, the position line is homochromy circle or heterochromatic circle, position line
Width of nick is no more than 0.5mm.
The position line is preferably heterochromatic circle.
The beneficial effects of the utility model：
（1）Three-line pendulum of the present utility model can realize the rotation inerttia of multiple diameter annulus, cylinder or cylinder with
And the checking of the rotary inertia parallel-axis theorem of multiple diameter annulus, cylinder or cylinder.
（2）The utility model can more accurately measure the measure of rotary inertia periodic quantity under a variety of cycles.
（3）Three rods that are in the light that outstanding disk lateral surface is set down can reduce to lower outstanding disk and to be measured
The influence of object rotation inertia size.
（4）The position that the position line set in outstanding disk card down can clearly differentiate different delineation bit lines is a variety of to adapt to
Diameter annulus, the measurement of cylinder or cylinder rotary inertia and the checking of parallel-axis theorem.
Brief description of the drawings
A kind of Fig. 1 structural representations of the three-line pendulums for adapting to rotary inertia of the present utility model more.
A kind of Fig. 2 structure charts of the lower outstanding disk of the three-line pendulums for adapting to rotary inertia of the present utility model more.
In figure：1st, support；2nd, base；3rd, upper disk；4th, lower outstanding disk；5th, be in the light rod；6th, position line.
Embodiment
To make the purpose and technical scheme of the utility model embodiment clearer, implement below in conjunction with the utility model
The accompanying drawing of example, the technical scheme to the utility model embodiment is clearly and completely described.Obviously, described embodiment
It is a part of embodiment of the present utility model, rather than whole embodiments.Based on described embodiment of the present utility model,
The every other embodiment that those of ordinary skill in the art are obtained on the premise of without creative work, belongs to this practicality
Novel protected scope.
The implication of " inside and outside " described in the utility model is referred to relative to equipment itself, inside sensing equipment
Direction be interior, otherwise is outer, rather than the specific restriction to equipment mechanism of the present utility model.
A kind of three-line pendulum for adapting to rotary inertia more, including support 1, base 2, the upper disk 3 that is installed on support and
The lower outstanding disk 4 being connected with upper disk by suspension wire, the both sides of support 1 are double-rod structure, and top is cross bar, 1 liang of the support
The double-rod of side is fixed on base 2, and the lower outstanding disk 4 is connected by three symmetrical fine rules with the upper disk 3, lower outstanding
The lateral surface of disk 4 is symmetrically installed with the less rod 5 that is in the light of three quality, the lower outstanding card of disk 4 on trisection posistion and is carved with positioning
Line 6.
Position line 6 in the lower outstanding card of disk 4 is the big non-concentric such as symmetrically of three groups of equidistant concentric circles and two groups；Three groups
It is the center of circle to hang disk 4 below the equidistant concentric circles of equidistant concentric circles one of which, and the center of circle of another two groups of equidistant concentric circles position lines 6 is located at
Symmetrical both sides in the outstanding center of circle of disk 4 down；Two groups symmetrically etc. big non-concentric position line 6 is uniformly distributed and the center of circle is located at the lower outstanding center of circle of disk 4
Symmetrical both sides.
The support 1 is to stablize double-rod structure and the base 2 containing larger quality, so ensures that whole three-line pendulum
Stability, improves its measurement accuracy.The position line 6 is homochromy circle or heterochromatic circle, and preferably heterochromatic circle, the indentation of position line 6 is deep
Degree is no more than 0.5mm.
It is to measure the larger annulus of radius, circle to hang disk 4 below for the effect of one group of equidistant concentric circles position line 6 in the center of circle
Cylinder, the rotary inertia of cylinder, the three-line pendulum after the utility model improvement are applicable not only to the measurement of original annulus, are applicable simultaneously
In the measurement of the annulus of other radiuses, and annulus center of rotation is more easy to searching and placement than original instrument, improves experiment measurement
Precision, add different radii annulus experimental data and compare.The effect of two groups of big non-concentric position lines 6 such as symmetrically is to grind
Study carefully the comparison of symmetrical cylinder parallel-axis theorem in the case where changing away from circle center distance, be easy to measurement cylinder rotating shaft to arrive
The distance of outstanding disk center rotating shaft.Effect positioned at two groups of equidistant concentric circles position lines 6 of the symmetrical both sides in the lower outstanding center of circle of disk 4 is to be used for
The parallel-axis theorem checking of different size cylinder, also can be used in asymmetric cylinder in the case of different radii under symmetric case
Parallel-axis theorem checking research, expanded three-line pendulum rotational inertia measurement content and scheme.
Disk 4 is hanged under the improved three-line pendulum of institute and meets accuracy of instrument, and has been expanded many on rotary inertia, parallel-axis theorem
The research of checking, for student's laboratory apparatus, by increasing capacitance it is possible to increase knowledge in this respect is expanded and experiment content.While this three-line pendulum
Down the improvement of outstanding disk 4 just for the surface of lower outstanding disk 4 carried out it is shallow it is horizontal portray and it is shallow it is horizontal tint, institute's way color is embedded with shallow horizontal stroke
It is interior, it is not easy to wear in experimentation, and difficulty of processing is smaller, function increase is more, in the expansion of instrument, if desired increases
The rigid body research of other shapes then only need to be according to the indentation in rigid body alteration of form Fig. 2.
Embodiment of the present utility model is these are only, it describes more specific and detailed, but can not therefore understand
For the limitation to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, not taking off
On the premise of the utility model design, various modifications and improvements can be made, these belong to protection of the present utility model
Scope.
Claims (4)
1. a kind of three-line pendulum for adapting to rotary inertia, including support more（1）, base（2）, the upper disk that is installed on support（3）
And the lower outstanding disk being connected with upper disk by suspension wire（4）, it is characterised in that the support（1）Both sides are double-rod structure, top
For cross bar, the support（1）The double-rod of both sides is fixed on base（2）On, the lower outstanding disk（4）It is symmetrical thin by three
Line and the upper disk（3）It is connected, lower outstanding disk（4）Lateral surface is symmetrically installed with three rods that are in the light on trisection posistion（5）, under
Outstanding disk（4）Position line is carved with card（6）.
2. the three-line pendulum for adapting to rotary inertia according to claim 1, it is characterised in that the lower outstanding disk more（4）Card
On position line（6）For the big non-concentric such as symmetrically of three groups of equidistant concentric circles and two groups；Three groups of equidistant concentric circles one of which etc.
Away from outstanding disk below concentric circles（4）For the center of circle, another two groups of equidistant concentric circles position lines（6）The center of circle be located at lower outstanding disk（4）The center of circle pair
Claim both sides；Two groups of big non-concentric position lines such as symmetrically（6）It is uniformly distributed and the center of circle is located at lower outstanding disk（4）The symmetrical both sides in the center of circle.
3. the three-line pendulum for adapting to rotary inertia according to claim 2, it is characterised in that the position line more（6）To be same
Color is justified or heterochromatic circle, position line（6）Width of nick is no more than 0.5mm.
4. the three-line pendulum for adapting to rotary inertia according to claim 3, it is characterised in that the position line more（6）To be different
Color is justified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620916528.8U CN206574336U (en) | 2016-08-22 | 2016-08-22 | A kind of three-line pendulum for adapting to rotary inertia more |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620916528.8U CN206574336U (en) | 2016-08-22 | 2016-08-22 | A kind of three-line pendulum for adapting to rotary inertia more |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206574336U true CN206574336U (en) | 2017-10-20 |
Family
ID=60062226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620916528.8U Expired - Fee Related CN206574336U (en) | 2016-08-22 | 2016-08-22 | A kind of three-line pendulum for adapting to rotary inertia more |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206574336U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110415582A (en) * | 2019-08-27 | 2019-11-05 | 潍坊学院 | The collapsible three-line pendulum for expanding three space of lines |
| CN111982401A (en) * | 2019-05-21 | 2020-11-24 | 南京工业大学 | Method for measuring object mass |
| CN110415582B (en) * | 2019-08-27 | 2024-05-31 | 潍坊学院 | Folding three-line pendulum for expanding three-line space |
-
2016
- 2016-08-22 CN CN201620916528.8U patent/CN206574336U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111982401A (en) * | 2019-05-21 | 2020-11-24 | 南京工业大学 | Method for measuring object mass |
| CN110415582A (en) * | 2019-08-27 | 2019-11-05 | 潍坊学院 | The collapsible three-line pendulum for expanding three space of lines |
| CN110415582B (en) * | 2019-08-27 | 2024-05-31 | 潍坊学院 | Folding three-line pendulum for expanding three-line space |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20171020 Termination date: 20200822 |