CN104952335A - Electromagnetic drive demonstration instrument - Google Patents
Electromagnetic drive demonstration instrument Download PDFInfo
- Publication number
- CN104952335A CN104952335A CN201510290404.3A CN201510290404A CN104952335A CN 104952335 A CN104952335 A CN 104952335A CN 201510290404 A CN201510290404 A CN 201510290404A CN 104952335 A CN104952335 A CN 104952335A
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- China
- Prior art keywords
- plate
- motor
- electromagnetic drive
- brandreth
- permanent magnet
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
- G09B23/181—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for electric and magnetic fields; for voltages; for currents
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- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Algebra (AREA)
- Pure & Applied Mathematics (AREA)
- Educational Administration (AREA)
- Computational Mathematics (AREA)
- Business, Economics & Management (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
The invention relates to an electromagnetic drive demonstration instrument. The electromagnetic drive demonstration instrument comprises a support plate, a motor, permanent magnets and an aluminum disc, wherein the aluminum disc is fixed on the support plate through a support rack, the motor is fixed on the support plate through an iron stand plate, the motor is disposed on one side of the iron stand plate, a rectangular iron plate is disposed on the other side of the iron stand plate, the permanent magnets are disposed at two ends of the rectangular iron plate, and the rectangular iron plate is connected with the motor through a horizontal shaft. The electromagnetic drive demonstration instrument has the advantages that the electromagnetic drive demonstration instrument is simple in structure and reasonable in layout, the motion features of a conductor circular plate in a rotary magnetic field can be observed, evident effect during demonstration is achieved, operation faults are avoided, and students' learning and teacher's teaching are benefited.
Description
Technical field
The present invention relates to a kind of Electromagnetic Drive demonstrator, belong to science and education equipment technical field.
Background technology
If magnetic field is relative to conductor motion, can produce induction current in the conductor, induction current makes conductor be subject to the effect of Ampère force, and Ampère force makes conductor motion, and this effect is exactly Electromagnetic Drive.Electromagnetic Drive effect can be used to manufacture the ammeter measuring rotating speed, and this kind of tachometer gage is often called magnetic revolution counter.In order to ensure the ac frequency f=50 second-1 produced in generator, just must control the rotating speed of rotor, in other cases, in order to give full play to the efficiency of machine and correctly use machine, also often need measure its rotating speed, then controlled further and regulate.When measuring rotating speed with magnetic tachometer gage, the rotating shaft of tested machine is connected with the rotating shaft of gear train with the permanent magnet in tachometer gage by connector, permanent magnet is generally fill by one piece to make with the magnet steel of four poles, this just forms a rotating magnetic field, a rosette is had above permanent magnet, be called sensing chip, have very little air gap between sensing chip and permanent magnet, both are not in contact with each other.Traditional Electromagnetic Drive instrument can not well to the observation kinetic characteristic of conductor plectane in rotating magnetic field, and in the process of demonstration DeGrain, the operating troubles of some can be produced, not be conducive to the study of student and the teaching of teacher.
Summary of the invention
The object of the invention is to: for the defect of prior art, propose a kind of Electromagnetic Drive demonstrator, this demonstrator structure is simple, arrange rationally, the kinetic characteristic of conductor plectane in rotating magnetic field can be observed, and demonstration process in successful, any operating troubles can not be produced, be conducive to the study of student and the teaching of teacher.
The technical solution adopted in the present invention is: a kind of Electromagnetic Drive demonstrator, comprise supporting plate, motor, permanent magnet and aluminium disk, aluminium disk is fixed on supporting plate by bracing frame, motor is fixed on supporting plate by brandreth plate, motor is located at the side of brandreth plate, the opposite side of brandreth plate is provided with rectangle iron plate, and wherein the two ends of rectangle iron plate are provided with permanent magnet, is connected between rectangle iron plate and motor by transverse axis.
In the present invention: described brandreth plate is " L " type, ensure that the combination between brandreth plate and supporting plate is firm, fluctuate little, thus the operation making motor stable.
In the present invention: described permanent magnet makes with NdFeB material, ensure that this magnet is in the process of demonstration, can produce good rotating magnetic field.
After adopting technique scheme, beneficial effect of the present invention is: structure of the present invention is simple, rationally distributed, the kinetic characteristic of conductor plectane in rotating magnetic field can be observed, and demonstration process in successful, any operating troubles can not be produced, be conducive to the study of student and the teaching of teacher.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
In figure: 1. permanent magnet; 2. motor; 3. aluminium disk; 4. bracing frame; 5. supporting plate; 6. brandreth plate; 7. transverse axis; 8. rectangle iron plate.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated.
As seen from Figure 1, a kind of Electromagnetic Drive demonstrator, comprise supporting plate 5, motor 2, permanent magnet 1 and aluminium disk 3, aluminium disk 3 is fixed on supporting plate 5 by bracing frame 4, motor 2 is fixed on supporting plate 5 by brandreth plate 6, and motor 2 is located at the side of brandreth plate 6, and the opposite side of brandreth plate 6 is provided with rectangle iron plate 8, wherein the two ends of rectangle iron plate 8 are provided with permanent magnet 1, are connected between rectangle iron plate 8 and motor 2 by transverse axis 7; Described brandreth plate 6, in " L " type, ensure that the combination between brandreth plate 6 and supporting plate 5 is firm, fluctuates little, thus the operation making motor 2 stable; Described permanent magnet 1 makes with NdFeB material, ensure that this magnet is in the process of demonstration, can produce good rotating magnetic field.
In presentation process, switch on power, motor 2 energising starts to rotate, motor 2 drives permanent magnet 1 to make it to rotate around transverse axis 7, then in perpendicular, produce rotating magnetic field, the mechanical effect due to eddy current drives aluminium disk 3 also and then to rotate, and the direction that both rotate is identical, but aluminium disk 3 rotate speed be less than permanent magnet 1(that is magnetic field all the time) rotating speed, this phenomenon is called Electromagnetic Drive.
Above the specific embodiment of the present invention is described, but the present invention is not limited to above description.For a person skilled in the art, any equal amendment to the technical program and substitute be all within the scope of the invention.Therefore, equalization conversion done without departing from the spirit and scope of the invention and amendment, all should contain within the scope of the invention.
Claims (3)
1. an Electromagnetic Drive demonstrator, it is characterized in that: comprise supporting plate, motor, permanent magnet and aluminium disk, aluminium disk is fixed on supporting plate by bracing frame, motor is fixed on supporting plate by brandreth plate, motor is located at the side of brandreth plate, the opposite side of brandreth plate is provided with rectangle iron plate, and wherein the two ends of rectangle iron plate are provided with permanent magnet, is connected between rectangle iron plate and motor by transverse axis.
2. a kind of Electromagnetic Drive demonstrator according to claim 1, is characterized in that: described brandreth plate, in " L " type, ensure that the combination between brandreth plate and supporting plate is firm, fluctuates little, thus the operation making motor stable.
3. a kind of Electromagnetic Drive demonstrator according to claim 1, is characterized in that: described permanent magnet makes with NdFeB material, ensure that this magnet is in the process of demonstration, can produce good rotating magnetic field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510290404.3A CN104952335A (en) | 2015-06-01 | 2015-06-01 | Electromagnetic drive demonstration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510290404.3A CN104952335A (en) | 2015-06-01 | 2015-06-01 | Electromagnetic drive demonstration instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104952335A true CN104952335A (en) | 2015-09-30 |
Family
ID=54166952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510290404.3A Pending CN104952335A (en) | 2015-06-01 | 2015-06-01 | Electromagnetic drive demonstration instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104952335A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106847020A (en) * | 2017-02-17 | 2017-06-13 | 浙江工业大学 | A kind of squirrel-cage asynchronous motor demonstrator |
-
2015
- 2015-06-01 CN CN201510290404.3A patent/CN104952335A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106847020A (en) * | 2017-02-17 | 2017-06-13 | 浙江工业大学 | A kind of squirrel-cage asynchronous motor demonstrator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150930 |
|
| WD01 | Invention patent application deemed withdrawn after publication |