CN106875795A - A kind of instructional device for semiquantitative determination Ampere force influence factor - Google Patents
A kind of instructional device for semiquantitative determination Ampere force influence factor Download PDFInfo
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- CN106875795A CN106875795A CN201710255816.2A CN201710255816A CN106875795A CN 106875795 A CN106875795 A CN 106875795A CN 201710255816 A CN201710255816 A CN 201710255816A CN 106875795 A CN106875795 A CN 106875795A
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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
- G09B23/187—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for measuring instruments
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- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The invention discloses a kind of instructional device for semiquantitative determination Ampere force influence factor, including base, column, leg surface is provided with graduation mark, column side is provided with the first sliding block, first sliding block is arranged in the longitudinal slide rail of susceptor surface, including stop block, stop block is located in the longitudinal slide rail between the first sliding block and column, first sliding block is provided with groove, groove both sides are provided with baffle plate, magnet piece is placed with groove, base is provided with circuit system, circuit system includes power supply, telegraph key, slide rheostat, ammeter and metal bar are connected by wired in series, insert in the circular hole of the first sliding block two sides at two ends after metal bar bending, column top is provided with spooler and winding recombination line, recombination line includes cotton thread and rubber band, rubber band one end is connected to metal bar middle part, the other end is connected with cotton thread, recombination line is provided with buoy；The present invention has advantages below：Design concept is ingenious, simple structure, and materials are easy, is easy to make, and cheap, clear principle.
Description
Technical field
The present invention relates to a kind of instructional device for semiquantitative determination Ampere force influence factor.
Background technology
Electrified wire stress factor, existing two typical Research Thinkings are influenceed in teaching of senior high school research uniform magnetic field：
1st, as shown in Figure 10, the scheme that people's religion version teaching material is provided：By the suspension of electrical conductor rod, it is vertical where horsehoe magnet to be put into
Uniform magnetic field region, changes condition, observes the change of electrical conductor rod deflection angle, substantially draws magnetic field suffered by electrical conductor rod
Relation between active force and influence factor.This experimental program has the shortcomings that very big, that is, can only qualitative analysis wherein
Relation, and quantitative relation can not be drawn.
2nd, as shown in figure 11, the scheme that religion section version teaching material is provided：Using multiturn coil in uniform magnetic field stress change come
Research.Because the number of turn is a lot, stress is obvious, it might even be possible to without force snesor, and is directly quantified using weight beam
Experiment.But, the stability of this experiment is very poor, because the magnetic field of multiturn coil has significantly mutually with the magnetic field of strong magnet
Effect, coil is deflected causes the failure of an experiment.
The content of the invention
It is an object of the invention to overcome above-mentioned limitation, existing drawback is solved, so that it is ingenious to provide a kind of design concept, knot
Structure is simple, and materials are easy, is easy to make, and cheap, clear principle, it is easy to operates, has both been easy to student's Accepting study, and
The instructional device for semiquantitative determination Ampere force influence factor of the Practical operation ability of student can be improved.
The purpose of the present invention is achieved through the following technical solutions：It is a kind of for semiquantitative determination Ampere force influence factor
Instructional device, including base, base are provided with column, and leg surface is provided with graduation mark, and column side is provided with the first sliding block, first
Sliding block is arranged in the longitudinal slide rail of susceptor surface, including stop block, and stop block is located at the longitudinal direction between the first sliding block and column
On slide rail, the first sliding block lower surface is provided with the projection being engaged with longitudinal slide rail, and the first sliding block is provided with groove, and groove both sides set
Have baffle plate, be placed with magnet piece in groove, base is provided with circuit system, circuit system include power supply, telegraph key, slide rheostat,
Ammeter and metal bar, power supply, telegraph key, slide rheostat, ammeter and metal bar are connected by wired in series, metal bar bending
Two ends afterwards are inserted in the circular hole of the first sliding block two sides, and the size of circular hole is engaged to ensure metal bar with the diameter of metal bar
Rotate non-slip, column top is provided with spooler, recombination line is wound on spooler, recombination line includes cotton thread and rubber band, rubber
Muscle one end is connected to metal bar middle part, the other end and cotton thread connection, and recombination line is provided with buoy.
Preferably, the second sliding block is fixed with the base of column side, the second sliding block is provided with groove, groove both sides
Baffle plate is provided with, magnet piece is placed with groove, the second sliding block is equal with the distance of metal bar with the distance and the first sliding block of metal bar.
Preferably, the second sliding block two sides bottom is provided with fixed seat, and fixed seat is provided with the spiral shell on bolt hole and base
Keyhole is corresponding to make the second sliding block be fixed with base.
Preferably, the groove inner surface of the second sliding block is provided with bolt hole and corresponding with the bolt hole on column makes
Two sliding blocks are fixed with column.
Preferably, the second sliding block is arranged in the horizontal slide rail of susceptor surface.
Preferably, longitudinal slide rail is dovetail groove guide rail, and the first sliding block lower surface is provided with what is be engaged with dovetail groove guide rail
It is raised.
Preferably, the first sliding block lower surface is provided with the roller being engaged with longitudinal slide rail.
Preferably, metal bar is fine copper rod or alloy bar.
Preferably, spooler is knob speed regulator.
Preferably, magnet piece is placed in magnetic box.
In sum, the present invention has advantages below：Design concept is ingenious, simple structure, and materials are easy, is easy to make,
And cheap, clear principle, it is easy to operate, be both easy to student's Accepting study, the Practical operation ability of student can be improved again.
Brief description of the drawings
Fig. 1 is structure chart of the invention；
Fig. 2-4 is the structure chart of another group of experiment of the invention；
Structure chart when Fig. 5 is vacant magnetic box of the present invention；
Fig. 6 is the structure chart that magnetic box of the present invention piles magnet piece；
Fig. 7-9 is test principle figure of the present invention；
Figure 10 is the scheme that existing teaching of senior high school people religion version teaching material is provided；
Figure 11 is the scheme that existing teaching of senior high school religion section version teaching material is provided；
Label in figure：1- bases, 2- columns, the sliding blocks of 3- first, 4- longitudinal slide rails, 5- grooves, 6- baffle plates, 7- magnet pieces, 8- electricity
Source, 9- telegraph keys, 10- slide rheostats, 11- ammeters, 12- metal bars, 13- circular holes, 14- spoolers, the sliding blocks of 15- second, 16-
Cotton thread, 17- rubber bands, 18- buoys, 19- magnetic box, 20- fixed seats, 21- horizontal slide rails.
Specific embodiment
In order to deepen the understanding of the present invention, below in conjunction with embodiment and accompanying drawing, the invention will be further described, should
Embodiment is only used for explaining the present invention, is not intended to limit the scope of the present invention..
Embodiment 1：
As shown in Fig. 1,5,6, the invention provides a kind of instructional device for semiquantitative determination Ampere force influence factor, including
Base 1, base 1 is provided with column 2, and the surface of column 2 is provided with graduation mark, and the side of column 2 is provided with the first sliding block 3, and the first sliding block 3 sets
Put in the longitudinal slide rail 4 on the surface of base 1, the lower surface of sliding block 3 is provided with the projection being engaged with longitudinal slide rail 4, including stop block,
Stop block is located in the longitudinal slide rail 4 between the first sliding block 3 and column 2 prevents the other end of column 2 to be provided with the phase of the second sliding block 15
Mutually attract, the first sliding block 3 is provided with groove 5, the side of groove 5 is provided with baffle plate 6, groove 5 and is placed with magnet piece 7, the size of magnet piece 7
It is 85 × 65 × 18mm, base 1 is provided with circuit system, and circuit system includes power supply 8, telegraph key 9, slide rheostat 10, ampere
Table 11 and metal bar 12, power supply 8, telegraph key 9, slide rheostat 10, ammeter 11 and metal bar 12 are connected by wired in series, gold
Category rod 12 bend after two ends insertion the first sliding block 3 two sides circular hole 13 in, the size of circular hole 13 and the diameter of metal bar 12
It is engaged to ensure that metal bar 12 rotates non-slip, transverse part one end is provided with spooler 14, spooler 14 is provided with recombination line, it is multiple
Zygonema includes cotton thread 16 and rubber band 17, and the one end of rubber band 17 ties up to the middle part of metal bar 12, the other end and cotton thread 16 and connects, is combined
Line is provided with buoy 18.
Longitudinal slide rail 4 is dovetail groove guide rail, and the lower surface of the first sliding block 3 is provided with the projection being engaged with dovetail groove guide rail to protect
Positive first sliding block 3 can be slided smoothly in dovetail groove guide rail.
Or the lower surface of the first sliding block 3 is provided with the roller being engaged with longitudinal slide rail 4, can be suitable to protect positive first sliding block 3
Smooth slides in longitudinal slide rail 4.
Metal bar 12 is fine copper rod or alloy bar, and the can be further reduced especially with the alloy bar with certain degree of hardness
The resistance of the part of circular hole 13 of the two sides of one sliding block 3, in order to prevent from being susceptible to deformation, can be reduced with Reusability
Error.
Spooler 14 is knob speed regulator, and regulation to get up more facilitate.
Magnet piece 7 is placed in magnetic box 19, if the exposed placement of magnet piece 7, two magnet pieces 7 side by side are easy to inhale
To together, and because gravitation is stronger, operator may be damaged, while it is furthermore noted that with various combination magnet piece 7
When being contrast experiment, it should be noted that it is too near that magnet piece 7 can not be leaned on each other.
Than the 1.5cm long of sliding block 3, width has more the edge of sliding block 3 no more than 1cm to length direction after the bending of metal bar 12,
Preferably 0.5cm.
The size of base 1 be 30cm × 25cm, the height of column 2 be 50cm, the size of sliding block 3 be 21cm long, width 9cm, 8cm high,
The size of groove 5 is 18cm long, width 4cm, 6cm high.
Embodiment 2：
Such as Fig. 2-4, the second sliding block 15 is fixed with the base 1 of the side of column 2, the second sliding block 15 is provided with groove 5, groove 5
Both sides are provided with and magnet piece 7 are placed with baffle plate 6, groove 5, the distance and the first sliding block 3 and metal of the second sliding block 15 and metal bar 12
The distance of rod 12 is equal, d=0.5cm.
In order to prevent the second sliding block 15 from being attracted each other with the first sliding block 3 for being put into magnet piece 7 after being put into magnet piece 7, second
The two sides bottom of sliding block 15 is provided with fixed seat 20, and fixed seat 20 is provided with that bolt hole is corresponding with the bolt hole on base 1 to make
Two sliding blocks 15 are fixed with base 1；
Or be provided with bolt hole and corresponding with the bolt hole on column 2 make using the inner surface of groove 5 of the second sliding block 15
Two sliding blocks 15 are fixed with column 2；
Or be arranged in the horizontal slide rail 21 on the surface of base 1 using the second sliding block 15, it is necessary to direct during using the second sliding block 15
Push it into, horizontal slide rail 21 can also play a part of to fix the second sliding block 15.
Experimental principle：
Fig. 7-9 is respectively rubber band and is in relaxed state；Spooler 14 is rotated, and adjusts the first sliding block 3, make recombination line vertically,
Copper cash frame is pulled to level with rubber band 17, the corresponding number of division x of now buoy 18 is write down0。
When metal bar hangs a weight 12 times, metal bar 12 can be deflected down, at this moment the rubber band 17 of recombination line lower end
Can be elongated, the length of cotton thread 16 of upper end is almost unchanged.
Spooler 14 is rotated, metal bar 12 is pulled to level, corresponding scale is x1。
For rubber band 17, in small range deformation, it is believed that rubber band meets：F=kx, rubber band deformation quantity increment is
（x1-x0）, corresponding elastic force increment is k（x1-x0）, there is k（x1-x0）=m1g。
A weight is changed, metal bar 12 is drawn to level, corresponding scale is x2, there is k（x2-x0）=m2g。
If not the weight hung, but magnetic field has downward active force to electric current, then have：k（xi-x0）=FMagnetic。
It can be seen that：Here △ x are（xi-x0）Applied force is just reflected, is similar to this with " variable quantity of deformation quantity represents power
Increment " physical thought can frequently encounter.
It is the magnetic at d on the surface of 3 internal magnet block of the first sliding block of distance 7 when only one of which magnet piece 7 in the first sliding block 3
Induction is B1If putting a same magnet piece 7 in the second sliding block 15 of the symmetrical position of the first sliding block 3, it is allowed
Synonyms pole it is relative, then the magnetic induction density B at this2, then there is B in theory2=2B1。
Test example 1：
In magnetic induction intensity and current strength（I=2A）Under conditions of certain, probe into magnetic field to electrified wire active force be put into
Relation between length of magnetic field.
Test example 2：
In magnetic induction intensity and length（2L）Under conditions of certain, magnetic field is probed between electrified wire active force and current strength
Relation.
Test example 3：
| B | ||||
| △x（△F） | 7 | 14 | 15 | 31 |
In current strength（I=2A）And length（2L）Under conditions of certain, magnetic field is probed into electrified wire active force and magnetic induction
Relation between intensity.
Prompting：In all experiments, B1For the side of column 2 is provided only with the first sliding block 3, and metal bar 12 apart from the table of magnet piece 7
Magnetic induction intensity at the 0.5cm of face, B2For the side of column 2 is provided with the first sliding block 3 and the second sliding block 15 and the distance of metal bar 12
The magnetic induction intensity at the surface 0.5cm of magnet piece 7 in one sliding block 3 and the second sliding block 15.
Obviously, in the range of error permission, can semi-quantitatively be drawn by this data tested：F∝ILB.
Claims (10)
1. a kind of instructional device for semiquantitative determination Ampere force influence factor, it is characterised in that：Including base（1）, it is described
Base（1）It is provided with column（2）, the column（2）Surface is provided with graduation mark, the column（2）Side is provided with the first sliding block
（3）, first sliding block（3）It is arranged on base（1）The longitudinal slide rail on surface（4）On, including stop block, the stop block is located at
First sliding block（3）With column（2）Between longitudinal slide rail（4）On, first sliding block（3）Lower surface is provided with and longitudinal slide rail
（4）The projection being engaged, first sliding block（3）It is provided with groove（5）, the groove（5）Both sides are provided with baffle plate（6）, it is described
Groove（5）Inside it is placed with magnet piece（7）, the base（1）Circuit system is provided with, the circuit system includes power supply（8）, telegraph key
（9）, slide rheostat（10）, ammeter（11）And metal bar（12）, the power supply（8）, telegraph key（9）, slide rheostat（10）、
Ammeter（11）And metal bar（12）Connected by wired in series, the metal bar（12）Insert the first sliding block in two ends after bending
（3）The circular hole of two sides（13）It is interior, the circular hole（13）Size and metal bar（12）Diameter be engaged to ensure metal bar
（12）Rotate non-slip, the column（2）Top is provided with spooler（14）, the spooler（14）Upper winding recombination line, it is described
Recombination line includes cotton thread（16）And rubber band（17）, the rubber band（17）One end is connected to metal bar（12）Middle part, the other end
With cotton thread（16）Connection, the recombination line is provided with buoy（18）.
2. a kind of instructional device for semiquantitative determination Ampere force influence factor according to claim 1, its feature exists
In：The column（2）The base of side（1）On be fixed with the second sliding block（15）, second sliding block（15）It is provided with groove
（5）, the groove（5）Both sides are provided with baffle plate（6）, the groove（5）Inside it is placed with magnet piece（7）, second sliding block（15）With
Metal bar（12）Distance and the first sliding block（3）With metal bar（12）Distance it is equal.
3. a kind of instructional device for semiquantitative determination Ampere force influence factor according to claim 2, its feature exists
In：Second sliding block（15）Two sides bottom is provided with fixed seat（20）, the fixed seat（20）It is provided with bolt hole and base
（1）On bolt hole corresponding make the second sliding block（15）With base（1）It is fixed.
4. a kind of instructional device for semiquantitative determination Ampere force influence factor according to claim 2, its feature exists
In：Second sliding block（15）Groove（5）Inner surface is provided with bolt hole and and column（2）On bolt hole corresponding make
Two sliding blocks（15）With column（2）It is fixed.
5. a kind of instructional device for semiquantitative determination Ampere force influence factor according to claim 2, its feature exists
In：Second sliding block（15）It is arranged on base（1）The horizontal slide rail on surface（21）On.
6. a kind of instructional device for semiquantitative determination Ampere force influence factor according to claim any one of 1-5,
It is characterized in that：The longitudinal slide rail（4）It is dovetail groove guide rail, first sliding block（3）Lower surface is provided with and dovetail groove guide rail
The projection being engaged.
7. a kind of instructional device for semiquantitative determination Ampere force influence factor according to claim any one of 1-5,
It is characterized in that：First sliding block（3）Lower surface is provided with and longitudinal slide rail（4）The roller being engaged.
8. a kind of instructional device for semiquantitative determination Ampere force influence factor according to claim any one of 1-5,
It is characterized in that：The metal bar（12）It is fine copper rod or alloy bar.
9. a kind of instructional device for semiquantitative determination Ampere force influence factor according to claim any one of 1-5,
It is characterized in that：The spooler（14）It is knob speed regulator.
10. a kind of instructional device for semiquantitative determination Ampere force influence factor according to claim any one of 1-5,
It is characterized in that：The magnet piece（7）It is placed on magnetic box（19）In.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710255816.2A CN106875795A (en) | 2017-04-19 | 2017-04-19 | A kind of instructional device for semiquantitative determination Ampere force influence factor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710255816.2A CN106875795A (en) | 2017-04-19 | 2017-04-19 | A kind of instructional device for semiquantitative determination Ampere force influence factor |
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| Publication Number | Publication Date |
|---|---|
| CN106875795A true CN106875795A (en) | 2017-06-20 |
Family
ID=59163369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710255816.2A Withdrawn CN106875795A (en) | 2017-04-19 | 2017-04-19 | A kind of instructional device for semiquantitative determination Ampere force influence factor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106875795A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108766155A (en) * | 2018-08-09 | 2018-11-06 | 浙江大学城市学院 | The parallel copper rod stress demonstrating of two energization of one kind and quantitative measurment experiment instrument |
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|---|---|---|---|---|
| CN2412262Y (en) * | 1999-12-24 | 2000-12-27 | 王衡 | Force synthesizing and decomposition demonstration instrument |
| CN200969171Y (en) * | 2006-11-17 | 2007-10-31 | 吴俣丹 | Ampere force visual experiment instrument |
| CN201315108Y (en) * | 2008-11-27 | 2009-09-23 | 范国峰 | Ampere force presenter |
| CN201725468U (en) * | 2010-01-27 | 2011-01-26 | 王韶修 | Experimental apparatus for visually and quantitatively analyzing ampere force |
| CN202434103U (en) * | 2011-11-30 | 2012-09-12 | 杨严辉 | Quantitative measurement Ampere force demonstration apparatus |
| CN202487046U (en) * | 2012-03-27 | 2012-10-10 | 浙江科技学院 | Ampere force teaching experimental device |
| CN102800227A (en) * | 2012-08-03 | 2012-11-28 | 昆山旭虹精密零组件有限公司 | Balance for measuring Ampere force |
| CN204516183U (en) * | 2015-04-03 | 2015-07-29 | 韩宜桐 | Adopt the experiment teaching aid of digital measurement docking balloon change and bungee Flexible change |
| CN206893157U (en) * | 2017-04-19 | 2018-01-16 | 王仁泉 | A kind of instructional device for semiquantitative determination Ampere force influence factor |
-
2017
- 2017-04-19 CN CN201710255816.2A patent/CN106875795A/en not_active Withdrawn
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2412262Y (en) * | 1999-12-24 | 2000-12-27 | 王衡 | Force synthesizing and decomposition demonstration instrument |
| CN200969171Y (en) * | 2006-11-17 | 2007-10-31 | 吴俣丹 | Ampere force visual experiment instrument |
| CN201315108Y (en) * | 2008-11-27 | 2009-09-23 | 范国峰 | Ampere force presenter |
| CN201725468U (en) * | 2010-01-27 | 2011-01-26 | 王韶修 | Experimental apparatus for visually and quantitatively analyzing ampere force |
| CN202434103U (en) * | 2011-11-30 | 2012-09-12 | 杨严辉 | Quantitative measurement Ampere force demonstration apparatus |
| CN202487046U (en) * | 2012-03-27 | 2012-10-10 | 浙江科技学院 | Ampere force teaching experimental device |
| CN102800227A (en) * | 2012-08-03 | 2012-11-28 | 昆山旭虹精密零组件有限公司 | Balance for measuring Ampere force |
| CN204516183U (en) * | 2015-04-03 | 2015-07-29 | 韩宜桐 | Adopt the experiment teaching aid of digital measurement docking balloon change and bungee Flexible change |
| CN206893157U (en) * | 2017-04-19 | 2018-01-16 | 王仁泉 | A kind of instructional device for semiquantitative determination Ampere force influence factor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108766155A (en) * | 2018-08-09 | 2018-11-06 | 浙江大学城市学院 | The parallel copper rod stress demonstrating of two energization of one kind and quantitative measurment experiment instrument |
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Application publication date: 20170620 |
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