CN2260358Y - Demonstration instrument for wave motion - Google Patents
Demonstration instrument for wave motion Download PDFInfo
- Publication number
- CN2260358Y CN2260358Y CN 96225435 CN96225435U CN2260358Y CN 2260358 Y CN2260358 Y CN 2260358Y CN 96225435 CN96225435 CN 96225435 CN 96225435 U CN96225435 U CN 96225435U CN 2260358 Y CN2260358 Y CN 2260358Y
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- CN
- China
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- vibrating arm
- utility
- model
- wave
- projection
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- Expired - Fee Related
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Abstract
The utility model relates to the improvement of the structure of a demonstration instrument for wave motion. The utility model comprises a base. The utility model has the essential structure that pendulum shafts on the convex shafts of the base are connected with the convex shafts of a top beam; the pendulum shafts are sheathed with oscillating rods outside; a spring is arranged between every two oscillating rods; a groove is arranged between every two bulges of the base, and the bulges of the base corresponds to the bulges of the top beam. The utility model has the advantages of multiple functions, convenient operation, simple structure, strong visualization, etc.
Description
The utility model relate to fluctuate improvement of demonstration instrument structure.
The instrument that is used at present demonstrating mechanical wave both at home and abroad is more, and what China was commonly used is curtain formula Metallic rod bent axle dial type, drives a plurality of crank connecting links exactly and stir the curtain rod vibration on same axis, and the curtain rod end points forms waveform; But when conversion demonstration shear wave, compressional wave, need corresponding replacing curtain formula Metallic rod, troublesome poeration, also fragile, bent axle is stirred the waveform of formation in addition, can not reflect actual wave process truly, promptly can not really disclose the essential laws in the wave process, and complex structure; The water flat curtain type wave demonstrator that Japan is commonly used, this instrument is to adopt curtain formula Metallic rod that the thin board type spring couples together as ripple ature of coal system, can demonstrate a series of phenomenons of relevant shear wave, but can not demonstrate compressional wave, and the flexible formation of reflection ripple matter is also directly perceived.
The purpose of this utility model is exactly at the problems referred to above, and a kind of have multiple function, fluctuation demonstrator easy and simple to handle are provided.
The purpose of this utility model is achieved in that the utility model comprises support, its structural feature is that the balance staff on the axle of projection of support is connected with the axle of the projection of putting the beams in place, balance staff is with vibrating arm outward, being spring between the vibrating arm, is groove between the projection with the protruding corresponding support of putting the beams in place.
Major advantage of the present utility model:
1, multi-functional:
Balance staff of the present utility model can be done vertical setting, but horizontal positioned again can be demonstrated compressional wave, shear wave respectively; Also can demonstrate out reflection wave, row ripple, standing wave, velocity of wave and ripple matter density, ripple matter resilient relationship etc.;
2, easy and simple to handle, simple in structure:
Desire is demonstrated waveform with the utility model, as long as stir vibrating arm gently, operates extremely easy; The utility model main member is support, upper beam, balance staff, vibrating arm, and its assembly is few and body is simple, so total is also extremely simple;
3, intuitive is strong
It is balance staff, vibrating arm that the utility model is mainly demonstrated part, especially is spring between the vibrating arm, and the process of the formation ripple of its vibration can reflect the forming process of common ripple more realistically.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the A-A cut-open view of Fig. 1
Below in conjunction with accompanying drawing concrete structure of the present utility model is described further:
The utility model comprises support 11, balance staff 6 on the axle 4 of the projection 3 of support 11 is connected with the axle 7 of the projection 8 of upper beam 10, being with vibrating arm 5 outside the balance staff 6, is spring 13 between the vibrating arm 5, is groove 9 between the projection 3 of the projection 8 corresponding supports 11 of upper beam 10 together.
Put the beams in place 10 side is provided with the clamp 2 that is fixed on the support 11, so that 10 the position of putting the beams in place is fixed; Also can be provided with backstay 1 on the clamp 2, by retainer spring 12, it is relatively stable that vibrating arm 5 is obtained.
Be equidistant between the vibrating arm 5; Vibrating arm 5 is to be symcenter with balance staff 6, for concerning between demonstration ripple matter density and the velocity of wave, matter rider 14 can be set etc. in the both sides of vibrating arm 5 respectively.
During use, at first make all vibrating arms 5 be in equilibrium state (promptly static), dial the vibrating arm 5 of next end then with have gentle hands, vibrational state just passes to the other end lentamente from an end, and then stir the vibrating arm 5 of an end continuously with hand, make its continuous shaking reach each vibrating arm 5, the end points of all vibrating arms 5 just can form waveform clearly.
Wave reflection and standing wave form: an end vibrating arm 5 is fixing, gently dial other end vibrating arm 5 freely with have gentle hands, and vibration is passed to fixedly vibrating arm 5 ends from free vibration bar 5 ends, in fixedly vibrating arm 5 end generation ripples emission, and can observe the half-wave loss phenomenon; If 5 continuous shakings of free end vibrating arm, incident wave and reflection wave stack, it is motionless to can be observed a few vibrating arms 5, promptly forms standing wave.
The demonstration of row ripple: several vibrating arms 5 endways add energy-dissipating device, prevent wave reflection, make 5 continuous shakings of top vibrating arm, can be observed capable ripple.
The demonstration that concerns between velocity of wave and ripple matter elasticity, the ripple matter density: change that rider 14 has promptly changed the moment of inertia of 5 pairs of center balance staffs 6 of each vibrating arm apart from the distance of center balance staff 6 on each vibrating arm 5, be equivalent to change ripple matter density; Change the distance of the center balance staff 6 of spring 13 and vibrating arm 5, be equivalent to change the elasticity of ripple matter, can demonstrate above-mentioned relation.
Pull-up or press down and put the beams in place 10,10 the projection 3 of putting the beams in place this moment drops down onto in the groove 9 of support 11, can carry out the switching of horizontal stroke, compressional wave demo function.Can drill all phenomenons of horizontal stroke, compressional wave as required.
The utility model also can be provided with the control device of vibrating arm 5, makes vibrating arm 5 do the demonstration of various ripples, reduces the error that manually causes the waveform demonstration with this as far as possible.
Claims (6)
1, the fluctuation demonstrator comprises support (11), it is characterized in that the balance staff (6) on the axle (4) of projection (3) of support (11) is connected with the axle (7) of the projection (8) of put the beams in place (10), the outer vibrating arm (5) that is with of balance staff (6), being spring (13) between the vibrating arm (5), is groove (9) between the projection (3) with (10) projection (8) the corresponding supports (11) of putting the beams in place.
2, fluctuation demonstrator according to claim 1 is characterized in that the side of upper beam (10) is provided with the clamp (2) that is fixed on the support (11).
3, fluctuation demonstrator according to claim 2 is characterized in that clamp (2) is provided with backstay (1).
4, fluctuation demonstrator according to claim 1 is characterized in that between the vibrating arm (5) for equidistant.
5, fluctuation demonstrator according to claim 1 is characterized in that vibrating arm (5) is is symcenter with balance staff (6).
6, fluctuation demonstrator according to claim 1, the both sides that it is characterized in that vibrating arm (5) such as are respectively arranged with at matter rider (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96225435 CN2260358Y (en) | 1996-02-13 | 1996-02-13 | Demonstration instrument for wave motion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96225435 CN2260358Y (en) | 1996-02-13 | 1996-02-13 | Demonstration instrument for wave motion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2260358Y true CN2260358Y (en) | 1997-08-20 |
Family
ID=33904119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96225435 Expired - Fee Related CN2260358Y (en) | 1996-02-13 | 1996-02-13 | Demonstration instrument for wave motion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2260358Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332084B (en) * | 2014-11-27 | 2016-05-25 | 浙江师范大学 | A kind of mechanical type velocity perturbation demonstrator |
| CN112562460A (en) * | 2020-12-15 | 2021-03-26 | 苏州大学文正学院 | Fluctuating demonstration equipment based on torsional characteristics of steel beam |
-
1996
- 1996-02-13 CN CN 96225435 patent/CN2260358Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332084B (en) * | 2014-11-27 | 2016-05-25 | 浙江师范大学 | A kind of mechanical type velocity perturbation demonstrator |
| CN112562460A (en) * | 2020-12-15 | 2021-03-26 | 苏州大学文正学院 | Fluctuating demonstration equipment based on torsional characteristics of steel beam |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |