CN103700299B - A kind of physical teaching aid for demonstrating natural frequency of object - Google Patents
A kind of physical teaching aid for demonstrating natural frequency of object Download PDFInfo
- Publication number
- CN103700299B CN103700299B CN201310664280.1A CN201310664280A CN103700299B CN 103700299 B CN103700299 B CN 103700299B CN 201310664280 A CN201310664280 A CN 201310664280A CN 103700299 B CN103700299 B CN 103700299B
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- elastic member
- rectangular parallelepiped
- flexible connection
- tie rods
- teaching aid
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Abstract
The invention discloses a kind of physical teaching aid for demonstrating natural frequency of object, comprising flexible connection line, top non-elastic member, small vibration motor, flexible connection piece, bottom non-elastic member, metallic support seat, metal tie rods; The invention has the beneficial effects as follows: this invention structure is simple, how to be moved by the motion parts observing teaching aid, by the phenomenon observed, understand the relevant knowledge of natural frequency of object, various oscillation phenomenons involved by high school physics can be demonstrated, thus student's space imagination can be improved rapidly and make its understand and master content of courses and effectively cause the interest of probing into scientific knowledge of student.
Description
Technical field
The present invention relates to teaching aid technical field, especially relating to a kind of physical teaching aid for demonstrating natural frequency of object.
Background technology
Current physical teaching aid can be demonstrated the various phenomenons that CAS Institute of Physics relates to substantially, as electromagnet phenomenon and rule, thermal phenomenon and rule, circuit and electrician, electromagnetic wave, power and mechanical and light and optical instrument etc., all the teaching to knowledge listed by textbook, but also not simple and easy and can continue to probe into and the teaching aid of interest by guiding student.
Summary of the invention
Technical matters to be solved by this invention is: provide a kind of physical teaching aid for demonstrating natural frequency of object, and how the motion parts observing teaching aid moves.By the phenomenon observed, understand the relevant knowledge of natural frequency of object, thus student's space imagination can be improved rapidly and make its understand and master content of courses and effectively cause the interest of probing into scientific knowledge of student.
In order to solve the problem; the present invention is by the following technical solutions: a kind of physical teaching aid for demonstrating natural frequency of object; it is characterized in that, comprise flexible connection line, top non-elastic member, small vibration motor, flexible connection piece, bottom non-elastic member, metallic support seat, metal tie rods; Described top non-elastic member is formed by fixedly connecting as a whole by a spheroid and three rectangular parallelepipeds; connected mode is be fixedly connected with a rectangular parallelepiped top bottom spheroid, and two other rectangular parallelepiped in three rectangular parallelepipeds is fixedly connected on the side, front and back of this rectangular parallelepiped be connected with spheroid respectively; Described metal tie rods is that two sections of mutually perpendicular metal tie rods are welded, and the other end and the described metallic support seat of the Metallic rod of the vertical direction of described metal tie rods weld together; Described flexible connection line, one end is fixedly connected on the horizontal component of described metal tie rods, and one end is fixedly connected on the spheroid of described top non-elastic member; Described flexible connection piece comprises two pieces of flexible connection pieces, be connected in the non-elastic member of top with spheroid mutually that rectangular parallelepiped in succession bottom two ends; Described bottom non-elastic member comprises a pair rectangular parallelepiped, and the top of any one rectangular parallelepiped in a pair rectangular parallelepiped is connected with the bottom of any one piece of flexible connection piece in two pieces of flexible connection pieces; Described small vibration motor is arranged on the rectangular parallelepiped middle position of the front side on described top non-elastic member by bolt.
Described metallic support seat is solid rectangular parallelepiped sheet metal, and its feet is formed by each inside 90 degree of bendings in sheet metal two ends.
The invention has the beneficial effects as follows: this invention structure is simple, and can demonstrate the various oscillation phenomenons involved by high school physics, guiding student carries out probing into and arouse the interest in study.
Accompanying drawing explanation
Fig. 1 is three-dimensional structure diagram of the present invention.
In figure: 1 flexible connecting line, 2 top non-elastic member, 3 small vibration motors, 4 flexible connection pieces, 5 bottom non-elastic member, 6 metallic support seats, 7 metal tie rods.
Embodiment
For the technical characterstic of this programme can be clearly demonstrated, below by an embodiment, and in conjunction with its accompanying drawing, this programme is set forth.
As shown in Fig. 1, a kind of physical teaching aid for demonstrating natural frequency of object, it is characterized in that, comprise flexible connection line 1, top non-elastic member 2, small vibration motor 3, flexible connection piece 4, bottom non-elastic member 5, metallic support seat 6, metal tie rods 7; Described top non-elastic member 2 is formed by fixedly connecting as a whole by a spheroid and three rectangular parallelepipeds, connected mode is be fixedly connected with a rectangular parallelepiped top bottom spheroid, and two other rectangular parallelepiped in three rectangular parallelepipeds is fixedly connected on the side, front and back of this rectangular parallelepiped be connected with spheroid respectively; Described metal tie rods 7 is that two sections of mutually perpendicular metal tie rods are welded, and the other end and the described metallic support seat 6 of the Metallic rod connecting link of the vertical direction of described metal tie rods 7 weld together; Described flexible connection line 1, one end is fixedly connected on the horizontal component of described metal tie rods 7, and one end is fixedly connected on the spheroid of described top non-elastic member 2; Described flexible connection piece 4 comprises two pieces of flexible connection pieces, be connected in top non-elastic member 2 with spheroid mutually that rectangular parallelepiped in succession bottom two ends; Described bottom non-elastic member 5 comprises a pair rectangular parallelepiped, and the top of any one rectangular parallelepiped in a pair rectangular parallelepiped is connected with the bottom of any one piece of flexible connection piece in two pieces of flexible connection pieces; Described small vibration motor 3 is arranged on the rectangular parallelepiped middle position of the front side in described top non-elastic member 2 by bolt.
Described metallic support seat 6 is solid rectangular parallelepiped sheet metal, and its feet is formed by each inside 90 degree of bendings in sheet metal two ends.
During use, system likeness in form " person of low position " that each parts form, rectangular parallelepiped composition " arm " on spheroid composition " head " of top non-elastic member 2, middle rectangular parallelepiped composition " trunk ", both sides, " both legs " that bottom non-elastic member 5 forms.A whole set of teaching aid pendulum in the planes such as dais, ensure the stable of teaching aid.The excitation frequency of small vibration motor 3 is transferred to minimum.Open small vibration motor 3, and constantly change the vibrational excitation frequency of small vibration motor 3, observe the motion conditions of the bottom non-elastic member 5 of teaching aid." person of low position " system be made up of top non-elastic member 2, small vibration motor 3, flexible connection piece 4, bottom non-elastic member 5 that flexible connecting line 1 connects is when reaching its certain first natural frequency, " both legs " of " person of low position ", namely two pairs of rectangular parallelepipeds of bottom non-elastic member 5 there will be the swing of one in front and one in back different directions, and when reaching other first natural frequency, " both legs " there will be simultaneously swing in the same way forward or backward.The amplitude size that " both legs " swing is also different from the distance of adjusted frequency distance inherent frequency numerical value.By the phenomenon observed, the student attended class is recognized, and the natural frequency of object does not only have one, and when reaching different natural frequencys, the motion state of object is also different.Thus make student produce the interest of continuation research related physical knowledge.
The above is the preferred embodiment of the present invention, and for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications are also regarded as protection scope of the present invention.
Claims (2)
1. for demonstrating a physical teaching aid for natural frequency of object, it is characterized in that, comprising flexible connection line, top non-elastic member, small vibration motor, flexible connection piece, bottom non-elastic member, metallic support seat, metal tie rods; Described top non-elastic member is formed by fixedly connecting as a whole by a spheroid and three rectangular parallelepipeds, connected mode is be fixedly connected with a rectangular parallelepiped top bottom spheroid, and two other rectangular parallelepiped in three rectangular parallelepipeds is fixedly connected on the side, front and back of this rectangular parallelepiped be connected with spheroid respectively; Described metal tie rods is that two sections of mutually perpendicular metal tie rods are welded, and the other end and the described metallic support seat of the Metallic rod of the vertical direction of described metal tie rods weld together; Described flexible connection line, one end is fixedly connected on the horizontal component of described metal tie rods, and one end is fixedly connected on the spheroid of described top non-elastic member; Described flexible connection piece comprises two pieces of flexible connection pieces, be connected in the non-elastic member of top with spheroid mutually that rectangular parallelepiped in succession bottom two ends; Described bottom non-elastic member comprises a pair rectangular parallelepiped, and the top of any one rectangular parallelepiped in a pair rectangular parallelepiped is connected with the bottom of any one piece of flexible connection piece in two pieces of flexible connection pieces; Described small vibration motor is arranged on the rectangular parallelepiped middle position of the front side on described top non-elastic member by bolt.
2. a kind of physical teaching aid for demonstrating natural frequency of object according to claim 1, is characterized in that, described metallic support seat is solid rectangular parallelepiped sheet metal, and its feet is formed by each inside 90 degree of bendings in sheet metal two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310664280.1A CN103700299B (en) | 2013-12-07 | 2013-12-07 | A kind of physical teaching aid for demonstrating natural frequency of object |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310664280.1A CN103700299B (en) | 2013-12-07 | 2013-12-07 | A kind of physical teaching aid for demonstrating natural frequency of object |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103700299A CN103700299A (en) | 2014-04-02 |
| CN103700299B true CN103700299B (en) | 2015-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310664280.1A Expired - Fee Related CN103700299B (en) | 2013-12-07 | 2013-12-07 | A kind of physical teaching aid for demonstrating natural frequency of object |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104464456A (en) * | 2014-12-26 | 2015-03-25 | 融水苗族自治县教育局 | Physical teaching aid |
| CN106781895A (en) * | 2017-01-09 | 2017-05-31 | 河南科技学院 | A kind of physical experiment table of intrinsic frequency |
| CN110189611B (en) * | 2019-06-25 | 2024-02-27 | 华侨大学 | Teaching aid for displaying structural vibration and control |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87212669U (en) * | 1987-09-16 | 1988-06-22 | 山东纺织工学院 | Gravity type multi-functional vibration synthesizer |
| CN201364675Y (en) * | 2009-03-10 | 2009-12-16 | 王建胡 | Forced vibration and resonance demonstrating experiment device |
| CN101853595A (en) * | 2010-05-11 | 2010-10-06 | 上海市莘格高级中学 | Electromagnetic drive type resonant and inherent frequency demonstrator |
| CN202711540U (en) * | 2012-07-19 | 2013-01-30 | 四川理工学院 | Experimental teaching aid for demonstrating determinants of inherent frequency of upper standing wave of chord wire |
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| CN103700299A (en) | 2014-04-02 |
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| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Qu Zhongfeng Inventor after: Deng Yonghong Inventor after: Liu Han Inventor after: Li Dong Inventor after: Li Shijian Inventor before: Deng Yonghong Inventor before: Qu Zhongfeng Inventor before: Liu Han Inventor before: Li Dong Inventor before: Li Shijian |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: DENG YONGHONG QU ZHONGFENG LIU HAN LI DONG LI SHIJIAN TO: QU ZHONGFENG DENG YONGHONG LIU HAN LI DONG LI SHIJIAN |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150819 Termination date: 20171207 |