CN209657605U - Electromagnetic induction integration experimental instrument - Google Patents
Electromagnetic induction integration experimental instrument Download PDFInfo
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- CN209657605U CN209657605U CN201820749948.0U CN201820749948U CN209657605U CN 209657605 U CN209657605 U CN 209657605U CN 201820749948 U CN201820749948 U CN 201820749948U CN 209657605 U CN209657605 U CN 209657605U
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- core
- guide rail
- bracket
- belt coil
- coil
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Abstract
Electromagnetic induction integration experimental instrument.Two parallel brackets are disposed vertically on experimental bench, upper bracket, two parallel rigid plastic supports of intermediate setting is arranged in bracket upper horizontal.The upper and lower iron core of belt coil is respectively set on upper bracket and on experimental bench, the upper and lower coaxial face of two iron cores, core coil is around on the contrary, pole polarity is different.The coil of two iron cores and concatenated circuit switch, variable resistance, ammeter and DC power supply constitute closed circuit.Two parallel metallic conductors with guide rail are fixed on two parallel rigid plastic supports respectively, place the metal bar that can be slided along guide rail thereon.Metallic conductor, metal bar and the circuit switch of connection, pointer ammeter and pointer voltmeter constitute closed circuit.This experiment instrument comprehensive demonstration: solenoid current generates magnetic principles, variation magnetic flux generates induced potential principle, conductor cutting magnetic field induced potential principle, induced potential and faradic relation principle.Simple, intuitive, student are easy to test, understand and grasp.
Description
(1), technical field
The utility model relates to a kind of experiment integration units, in particular to Middle School Physics class experimental apparatus.
(2), background technique
Electromagnetic relationship is that Middle School Physics class is critically important, but is also most being difficult to understand for.This part course is real at present
Testing instrument is mostly demonstrator, and mostly use middle school student unfamiliar device, such as diode, sensor greatly etc..For helical
Magnetic field, changes of magnetic field generation induced potential, conductor cutting magnetic field generation induced potential and the induced potential that pipe galvanization generates
Demonstration with faradic principle is also fragmented, shortage Comprehensive Experiment and direct feel.This electromagnetic induction integration experimental instrument
These knowledge integrations are got up well by easy device, convenient for observation, understands and grasps.
(3) utility model content
The utility model is directed to the deficiency of existing teaching and experiment equipment, provides a kind of by qualitative experiment solenoid current and its
Generate relationship, electromagnetic induction potential and the conductor cutting magnetic field induced potential, induced potential and faradic set of relations in magnetic field
In the experimental provision of one, it is convenient for observation of students, understanding and grasp.
What the purpose of this utility model was achieved in that: experiment instrument includes experimental bench, two brackets being parallel to each other, powers on
Magnet, lower electromagnet, the metallic conductor with guide rail, the metal bar ab that can be slided along guide rail, circuit switch, variable resistance, direct current
Power supply, ammeter, pointer voltmeter, pointer ammeter, and parallel rigid plastic support and upper bracket.
Bracket is parallel to each other and is vertically fixed on experimental bench, and upper bracket is placed in parallel on bracket, is arranged on upper bracket
Upper electromagnet, the fixed placement lower core on experimental bench, the upper and lower coaxial face of two iron cores are placed, and two coil winding-directions are on the contrary, be powered
When, upper core and lower core are different pole polarities.Between the coil of the upper and lower iron core of belt coil connect a circuit switch,
Variable resistance DC power supply, the coil of upper and lower iron core is constituted with circuit switch, variable resistance, ammeter and DC power supply to be closed
Circuit.
It is located at the position among upper and lower electromagnet on two parallel brackets and is placed in parallel two parallel rigid plastic supports, two
The parallel metallic conductor with guide rail of root is separately fixed on two parallel rigid plastic supports.On the closed slide of metallic conductor
The metal bar ab that can be slided along guide rail is placed, metal bar ab is contacted well with the closed slide of metallic conductor.
Series circuit switches, pointer ammeter, pointer voltmeter are connected in parallel on two metals and lead on two metallic conductors with guide rail
Between body, metal bar ab, two metallic conductors, circuit switch, pointer ammeter and the pointer voltmeter composition that can be slided along guide rail are closed
Close circuit.
The upper electromagnet, the core structure of lower electromagnet are identical, are I-shaped, and the top of I-shaped is upper circle
Disk, I-shaped lower section be lower disc, size, the thickness of upper and lower two disk be different；Middle section is that diameter is more straight than upper disk
Diameter and the lesser cylinder of lower former disk diameter, the wound around coil in cylinder.The upper core of belt coil and the lower core of belt coil
Placement direction on the contrary, the lower disc of the upper core of belt coil is in lower section, the lower disc of the lower core of belt coil is above.
It is connected with arc stent between two upper bracket, the cylinder of the upper core of arc stent radius and belt coil
Radius coincide.
The good effect of the utility model is:
1, solenoid is powered and generates magnetic field by the function of effective comprehensive high middle-school's physics demonstration instrument, changes of magnetic field generates induction
Potential, conductor cutting magnetic field generate induced potential and induced potential and the presentation process of faradic principle is intuitively presented,
It is easy to observation of students, understanding and grasp.
2, during the experiment, by changing the size of adjustable resistance, that is, change solenoid current size, and then change logical
The power in electrical solenoid magnetic field；Or change the speed of conductor cutting, observe pointer voltmeter, the induced electricity of conductor cutting magnetic field
Gesture, closed circuit switch observable induced current.The speed of adjustable resistance variation is controlled, i.e., the variation of control solenoid current is fast
Slowly, so control energization solenoid changes of magnetic field speed；The size and Orientation of induced potential passes through concatenated pointer voltmeter
Observation, closed circuit switch observable induced current.There is positive effect to the culture of students ' interest of study.
3, this experimental provision and principle are simple, and the relationship various aspects of electricity and magnetic are comprehensive, understand intuitively, facilitate Students ' Comprehensive
Understand electromagnetic induction, the creativity consciousness of training student.
(4) Detailed description of the invention
Fig. 1 is this electromagnetic induction integration experimental instrument overall structure diagram,
Fig. 2 is core structure schematic diagram.
Fig. 3 is the structural schematic diagram of two upper brackets connection arc bracket.
Fig. 4 is that top view after metallic conductor and metal bar with guide rail is placed on parallel rigid plastic support.
In figure, 1 bracket experimental bench, 2-1,2-2 bracket, 3 iron cores, the lower iron of the upper core of 3-1 belt coil, 3-2 belt coil
Core, the parallel rigid plastic support of 4-1,4-2, the metallic conductor of 5-1,5-2 with guide rail, 6 metal bar ab, 7-1,7-2 upper brackets,
8-1,8-2 circuit switch, 9 variable resistances, 10 DC power supplies, 11 ammeters, 12 pointer voltmeters, 13 pointer ammeters, on 14
Disk, 15 cylindrical, 16 lower discs, 17 arc stents.
(5) specific embodiment
Referring to attached drawing 1.
Fixed setting is parallel to each other and vertical bracket 2-1,2-2 on the experimental bench 1 of this electromagnetic induction integration experimental instrument.In
Upper bracket 7-1,7-2 are placed in parallel on bracket 2-1,2-2.In upper bracket in the middle position of experimental bench, it is placed in parallel parallel hard
Matter plastic stent 4-1 and 4-2.
The upper core 3-1 of belt coil is set on upper bracket 7-1,7-2, the lower core of belt coil under fixing on experimental bench
3-2.The upper core of belt coil, the coaxial face of lower core of belt coil are placed, and coil winding-direction is opposite.When energization, belt coil it is upper
The lower core 3-2 of iron core 3-1 and lower belt coil is different pole polarity.
Referring to attached drawing 2.
The upper core 3-1 of belt coil, 3 structure of iron core of the lower core 3-2 of belt coil are identical.In order to mitigate iron core weight,
Iron core is made into I-shaped.The top of I-shaped is divided into disk 14, the lower part of I-shaped is divided into lower disc 16, and centre connects
Socket part is divided into cylinder 15, and the diameter of cylinder 15 is smaller than upper 14 diameter of disk and 16 diameter of lower disc.Upper and lower two disk
Size, thickness are different, and disc-shape can guarantee being uniformly distributed for magnetic field.Iron core is the good silicon steel composition of magnetic property.In circle
Wound around coil in cylindricality 15.The placement direction of the lower core 3-2 of the upper core 3-1 of belt coil and lower belt coil is on the contrary, belt coil
Upper core 3-1 lower disc 16 in lower section, the lower disc 16 of the lower core 3-2 of lower belt coil is above.
Referring to attached drawing 3,
The centre of upper bracket 7-1,7-2 are connected with arc stent 17, the upper core of arc stent radius and belt coil
The radius of the cylinder 15 of 3-1 coincide.Fix the upper core 3- of belt coil jointly by arc stent and upper bracket 7-1,7-2
1, guarantee to place with the coaxial face of the lower core 3-2 of lower belt coil.
Connect a circuit switch 8-1, variable between the upper core 3-1 of belt coil, the coil of the lower core 3-2 of lower belt coil
9 DC power supply 10 of resistance.The upper core 3-1 of belt coil, the lower core 3-2 of belt coil and circuit switch 8-1, variable resistance 9, electricity
Flow table 11 and DC power supply 10 constitute closed circuit, and when energization forms solenoid current circuit.In this example, DC power supply selection is dry
Battery.
Referring to attached drawing 1,4.
Position on bracket 2-1,2-2 among the lower core of upper and lower belt coil is placed in parallel horizontal rigid plastics
Bracket 4-1 and 4-2.Two parallel metallic conductor 5-1,5-2 with guide rail are separately fixed at parallel rigid plastic support 4-1
On 4-2.On the closed slide of metallic conductor 5-1,5-2 place one can along guide rail slide metal bar 6, metal bar 6 with
The closed slide contact of metallic conductor 5-1,5-2 are good.
The upper series circuit switches 8-2 of two metallic conductor 5-1,5-2, pointer voltmeter 12 with guide rail.Pointer ammeter 13
It is connected in parallel between two metallic conductor 5-1,5-2 with guide rail.6, two metallic conductor with guide rail of metal bar ab that can be slided along guide rail
5-1,5-2, circuit switch 8-2, pointer ammeter 12 and pointer voltmeter 13 constitute closed circuit.
Electromagnetic induction integration experimental is integrated by the utility model.Solenoid is powered and generates magnetic field, changes of magnetic field produces
Raw induced potential, conductor cutting magnetic field generate induced potential and induced potential and the presentation process of faradic principle is intuitive
It presents, is easy to observation of students, understanding and grasp.
In experiment, change the size of variable resistance 9, i.e. change solenoid current size, and then changes energization solenoid magnetic
The power of field.The speed that variable resistance 9 changes, the i.e. speed of control solenoid current variation are controlled, and then controls energization helical
The speed of pipe changes of magnetic field.
Adjustable resistance 9 is turned down, ammeter 11 is read greatly, and solenoid current is big, across the magnetic field that the metal with guide rail is led
By force.Metallic rod ab slides cutting magnetic field, and pointer voltmeter throw of pointer amplitude is big.Circuit switch 8-2 is closed, ammeter just has reading
Number；Similarly operation tunes up resistance and changes the sliding speed of metallic rod.Allow student's direct feel: (1) DC loop resistance changes
Change causes curent change；(2) variation of energization solenoid electric current causes the variation in magnetic field；(3) conductor cutting magnetic field power and
Variation of the cutting speed to induced potential；(4) induced potential and faradic relationship.
Disconnecting circuit switch 8-2 reads the throw of pointer of voltmeter, and closed circuit switch 8-2 read current table 12 is read.
Allow student's direct feel: (1) size of changes of magnetic field speed induced potential, when (2) magnetic field increases or reduces, the deflection side of pointer
To variation.
Meanwhile the coil connection type of the lower core by changing upper and lower belt coil, observe the deflection side of voltage list index
To.
Claims (3)
1. a kind of electromagnetic induction integration experimental instrument, it is characterised in that: experiment instrument includes experimental bench (1), bracket one (2-1), bracket
Two (2-2), the upper core (3-1) of belt coil, the lower core (3-2) of belt coil, metallic conductor one (5-1), band with guide rail are led
The metallic conductor two (5-2) of rail, the metal bar (6) that can be slided along guide rail, circuit switch one (8-1), circuit switch two (8-2),
Variable resistance (9), DC power supply (10), ammeter (11), pointer voltmeter (12), pointer ammeter (13), and it is parallel hard
Matter plastic stent one (4-1), parallel rigid plastic support two (4-2) and upper bracket one (7-1), upper bracket two (7-2)；
Bracket one (2-1), bracket two (2-2) are parallel to each other and are vertically fixed on experimental bench (1), in bracket one (2-1), bracket
It is placed in parallel upper bracket one (7-1), upper bracket two (7-2) on two (2-2), the upper core (3-1) of belt coil is set on upper bracket,
The lower core (3-2) of fixed placement belt coil on experimental bench, the coaxial face of upper and lower two iron core of belt coil are placed, coil around
To on the contrary, the upper core (3-1) of belt coil is different pole polarities from the lower core (3-2) of belt coil when being powered；
Between the upper core (3-1) of belt coil, the coil of the lower core (3-2) of belt coil connect a circuit switch one (8-1), can
Power transformation hinders (9) DC power supply (10), the upper core (3-1) of belt coil, the lower core (3-2) of belt coil and one (8- of circuit switch
1), variable resistance (9), ammeter (11) and DC power supply (10) constitute closed circuit；
On bracket one (2-1), bracket two (2-2) positioned at the upper core (3-1) of belt coil, belt coil lower core (3-2) in
Meta position, which is set, is placed in parallel parallel rigid plastic support one (4-1), parallel rigid plastic support two (4-2), and two parallel bands are led
The metallic conductor one (5-1) of rail, the metallic conductor two (5-2) with guide rail be separately fixed at parallel rigid plastic support one (4-1),
On parallel rigid plastic support two (4-2), in the flat of the metallic conductor two (5-2) with guide rail metallic conductor one (5-1), with guide rail
The metal bar (6) that can be slided along guide rail is placed on row guide rail, metal bar is led with metallic conductor one (5-1), band with guide rail
The closed slide contact of the metallic conductor two (5-2) of rail is good；
Metallic conductor one (5-1) with guide rail and series circuit switches two (8-2) on the metallic conductor two (5-2) with guide rail refer to
Needle ammeter (13)；Pointer voltmeter (12) is connected in parallel on the metallic conductor one (5-1) with guide rail and the metallic conductor two with guide rail
Between (5-2)；It can be along metal bar (6), the metallic conductor one (5-1) with guide rail and the metallic conductor two with guide rail that guide rail slides
(5-2), circuit switch two (8-2), pointer voltmeter (12) and pointer ammeter (13) constitute closed circuit.
2. electromagnetic induction integration experimental instrument as described in claim 1, it is characterised in that: the upper core (3-1) of the belt coil,
Iron core (3) structure of the lower core (3-2) of belt coil is identical, is I-shaped, the top of I-shaped be upper disk (14),
The lower section of I-shaped is lower disc (16), and middle section is diameter cylinder more lesser than upper disk diameter and lower former disk diameter
Shape, size, the thickness of upper and lower two disk are different；The wound around coil on cylindrical (15)；The upper core (3-1) and band of belt coil
The placement direction of the lower core (3-2) of coil on the contrary, the lower disc (16) of the upper core (3-1) of belt coil in lower section, belt coil
Lower core (3-2) lower disc (16) above.
3. electromagnetic induction integration experimental instrument as described in claim 1, it is characterised in that: the upper bracket one (7-1), upper bracket
It is connected between two (7-2) arc stent (17), the cylinder (15) of the upper core (3-1) of arc stent radius and belt coil
Iron core radius coincide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820749948.0U CN209657605U (en) | 2018-05-18 | 2018-05-18 | Electromagnetic induction integration experimental instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820749948.0U CN209657605U (en) | 2018-05-18 | 2018-05-18 | Electromagnetic induction integration experimental instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209657605U true CN209657605U (en) | 2019-11-19 |
Family
ID=68505638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820749948.0U Expired - Fee Related CN209657605U (en) | 2018-05-18 | 2018-05-18 | Electromagnetic induction integration experimental instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209657605U (en) |
-
2018
- 2018-05-18 CN CN201820749948.0U patent/CN209657605U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20191119 |
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| CF01 | Termination of patent right due to non-payment of annual fee |