CN206097623U - Lever principle demonstration teaching aid for physics teaching - Google Patents
Lever principle demonstration teaching aid for physics teaching Download PDFInfo
- Publication number
- CN206097623U CN206097623U CN201620846272.8U CN201620846272U CN206097623U CN 206097623 U CN206097623 U CN 206097623U CN 201620846272 U CN201620846272 U CN 201620846272U CN 206097623 U CN206097623 U CN 206097623U
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- China
- Prior art keywords
- lever
- balancing pole
- teaching aid
- lever principle
- roller
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Abstract
The utility model relates to a physical teaching apparatus technical field, concretely relates to lever principle demonstration teaching aid for physics teaching, including base, scale pan, telescopic link, protection device, balancing pole, locating pin and gyro wheel, the utility model discloses with the support part of telescopic link as the teaching aid, change teaching aid that can be nimble display the height, make things convenient for the back row classmate to watch, be equipped with simultaneously the gyro wheel groove on the balancing pole, be connected its and telescopic link with the gyro wheel, the fulcrum of change balancing pole that can be nimble, the influence of the different dotted pair lever of convenient demonstration, through locating pin and location pinhole and scale pan can be convenient the atress size at change balancing pole both ends, the different power of convenient demonstration are to the influence of lever, thereby derive the formula to the lever atress, protection device is used for the protection under the unbalance condition of atress, the condition that the balancing pole lurch is fallen, avoid the balancing pole to receive fierce striking and damage the balancing pole, the utility model discloses the simple operation, it is more vivid to demonstrate, has very strong practicality.
Description
Technical field
The utility model is related to physical teaching aid technical field, and in particular to a kind of physics teaching is demonstrated with lever principle
Teaching aid.
Background technology
Lever divides laborious lever, laborsaving lever and bascule, lever principle to be also referred to as " lever equilibrium condition " again.Make
Lever balance, acts on two torques on lever（The product of power and the arm of force）Size must be equal.I.e.：Power × power arm=
Resistance × resistance arm, with algebraic expression F1L1=F2L2 is expressed as.In formula, F1 represents power, and L1 represents power arm, and F2 is represented
Resistance, L2 represents resistance arm.Can be seen that from above formula, to make lever reach balance, power arm is several times of resistance arm, and resistance is exactly
Several times of power.Almost all can't do without lever in each machine, also there are various levers acting as in human body
With.Pick up a thing, curved waist once, in addition stick up tiptoe be all human body lever in action, understood the thick stick of human body
Bar not only can increase physical knowledge, moreover it is possible to learn many physiological knowledges.Lever principle is one of principle important in physics,
In physics teaching, demonstration lever principle can allow the more vivid understanding lever rule of student.Teacher is explaining lever to student
During principle, typically all understood by drawing, without actual teaching aid student viewing is demonstrated to, or entered using light instrument
Row simulation, such teacher can not accurately load the quality at lever two ends, can not be accurately positioned position of the fulcrum, can only be by virtue of experience
Lever principle simulation is carried out with feel, there are some students to understand not thorough, the knowledge learned is not sturdy, thing after having a strong impact on
The understanding and grasp of reason knowledge.Therefore, it is necessary to a kind of lever used for physics teaching is provided, can be with image in kind when teacher gives lessons
Expression lever principle, while also allowing the memory and profound of student, improves efficiency of teaching.In the special of Patent No. CN201520177704
In sharp file, a kind of physics teaching lever demonstration teaching appliance is disclosed, educational aid field solves current lever demonstration religion
Tool can not sufficiently demonstrate the problem of lever principle, and it includes lever, pole, pallet, balancing weight, counterweight, lifting rope, suspension ring and thoroughly
Open-wire line；The lever is the S shapes being made up of two 1/2nd annulus；A pole is each provided with the two ends of lever,
The upper end of every pole is provided with the pallet of a magnetic；In the pallet downside and two positioned at 1/2nd annulus B one end
The middle of/mono- annulus B is provided with the balancing weight for making lever keep balance；An iron material is provided with each pallet
The counterweight of matter；A lifting rope is provided with the upside of lever, the lower end of lifting rope is fixed with the junction of two 1/2nd annulus
Connection, the upper end of lifting rope is fixedly connected with suspension ring；Transparent thread is provided between the root of two poles and the root of lifting rope.This
Utility model is used for physics teaching.
The hand-held suspension ring of above-mentioned patent document make lever hanging, and when counterweight is removed, due to being provided with balancing weight, lever keeps
Poised state, counterweight is placed on corresponding pallet, because the quality of the counterweight positioned at 1/2nd annulus A one end is position
In 1/2nd of the quality of the counterweight of 1/2nd annulus B one end, lever is still in poised state, the matter of two counterweights
Amount is different, so as to demonstrate effect and the principle of lever, but for how to provide simple structure, a simple operation, demonstrates
It is more vivid, it is easy to carry, the wider array of physics teaching lever principle demonstration teaching aid of range of application lacks technical solution.
The content of the invention
For the deficiencies in the prior art, the utility model provides a kind of physics teaching lever principle demonstration teaching aid, uses
In solving how to provide simple structure, a simple operation, it is more vivid to demonstrate, and is easy to carry, the wider array of physics of range of application
The problem of lever for teaching principle demonstration teaching aid.
The utility model is achieved by the following technical programs：
A kind of physics teaching lever principle demonstration teaching aid, including base, scale pan, expansion link, protection device, balance
Bar, alignment pin and roller；The expansion link includes base arm and telescopic arm, and the base arm is arranged on the base, described flexible
Arm one end is arranged in the base arm, and its other end is connected by roller shaft with the roller, and the protection device includes propping up
Strut and ball, described support bar one end is arranged in the base arm, and the ball is arranged on the support bar in addition
One end, the balancing pole bottom is provided with roller groove, and its top is provided with dowel hole, and the roller-coaster is arranged on the roller groove
Interior, the scale pan is arranged on the alignment pin, and the alignment pin is arranged in the dowel hole.
Preferably, the roller is arranged on telescopic arm top termination by roller shaft, and along telescopic arm left and right directions
Symmetrically.
Preferably, the support bar is arranged on the left and right sides of the base arm bottom, and base arm left and right directions is symmetrical.
Preferably, the support bar is in 60 ° of angles in vertical direction with the base arm.
Preferably, physics teaching lever principle demonstration teaching aid also includes counterweight, and the counterweight is arranged on the weight
In code-disc.
The beneficial effects of the utility model are：
The utility model expansion link can flexibly change the height that represents of teaching aid, side as the support section of teaching aid
Classmate's viewing is arranged after an action of the bowels, while being provided with roller groove on balancing pole, is connected it with expansion link with roller, can flexibly change
The fulcrum of balancing pole, impact of the different fulcrums of convenient demonstration to lever can be with by alignment pin and dowel hole and scale pan
Easily change the stress size at balancing pole two ends, impact of the convenient demonstration difference power to lever, so as to derive to lever stress
Computing formula, protection device be used for protection in the case where stress is unbalance, balancing pole inclines suddenly situation about falling, it is to avoid put down
Weighing apparatus bar is clashed and is damaged balancing pole, the new simple operation of this practicality, and it is more vivid to demonstrate, with very strong practicality.
Description of the drawings
In order to be illustrated more clearly that the utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or the accompanying drawing to be used needed for description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, in the premise for not paying creative work
Under, can be with according to these other accompanying drawings of accompanying drawings acquisition.
Fig. 1 is upward view of the present utility model；
Fig. 2 is front view of the present utility model；
Fig. 3 is top view of the present utility model；
Label in figure is represented respectively：1st, base；2nd, base arm；3rd, telescopic arm；4th, support bar；5th, ball；6th, roller；7、
Balancing pole；8th, dowel hole；9th, alignment pin；10th, scale pan；11st, roller groove.
Specific embodiment
It is new below in conjunction with this practicality to make purpose, technical scheme and the advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, is clearly and completely described, it is clear that retouched to the technical scheme in the utility model embodiment
The embodiment stated is a part of embodiment of the utility model, rather than the embodiment of whole.Based on the enforcement in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made is belonged to
The scope of the utility model protection.
A kind of physics teaching lever principle demonstration teaching aid as shown in Figure 1, Figure 2 and Figure 3, including base, scale pan, stretch
Contracting bar, protection device, balancing pole, alignment pin and roller；Expansion link includes base arm and telescopic arm, and base arm is arranged on base, stretches
Contracting arm one end is arranged in base arm, and its other end is connected by roller shaft with roller, and protection device includes support bar and rubber
Ball, support bar one end is arranged in base arm, and ball is arranged on the other end of support bar, and balancing pole bottom is provided with roller groove,
Its top is provided with dowel hole, and roller-coaster is arranged in roller groove, and scale pan is arranged on alignment pin, and alignment pin is arranged on fixed
In the pin-and-hole of position.
Specifically, roller is arranged on telescopic arm top termination by roller shaft, and symmetrical along telescopic arm left and right directions, supports
Bar is arranged on the left and right sides of base arm bottom, and base arm left and right directions is symmetrical, and support bar is with base arm in vertical direction in 60 ° of folders
Angle, physics teaching lever principle demonstration teaching aid also includes counterweight, and counterweight is arranged in scale pan.
The utility model expansion link can flexibly change the height that represents of teaching aid, side as the support section of teaching aid
Classmate's viewing is arranged after an action of the bowels, while being provided with roller groove on balancing pole, is connected it with expansion link with roller, can flexibly change
The fulcrum of balancing pole, impact of the different fulcrums of convenient demonstration to lever can be with by alignment pin and dowel hole and scale pan
Easily change the stress size at balancing pole two ends, impact of the convenient demonstration difference power to lever, so as to derive to lever stress
Computing formula, protection device be used for protection in the case where stress is unbalance, balancing pole inclines suddenly situation about falling, it is to avoid put down
Weighing apparatus bar is clashed and is damaged balancing pole, the new simple operation of this practicality, and it is more vivid to demonstrate, with very strong practicality
Property.
Above example only to illustrate the technical solution of the utility model, rather than a limitation；Although with reference to aforementioned reality
Apply example to be described in detail the utility model, it will be understood by those within the art that：It still can be to front
State the technical scheme described in each embodiment to modify, or equivalent is carried out to which part technical characteristic；And these
Modification is replaced, and does not make the spirit and model of each embodiment technical scheme of essence disengaging the utility model of appropriate technical solution
Enclose.
Claims (5)
1. a kind of physics teaching lever principle demonstration teaching aid, including base and scale pan, it is characterised in that：Including expansion link,
Protection device, balancing pole, alignment pin and roller；The expansion link includes base arm and telescopic arm, and the base arm is arranged on the bottom
On seat, described telescopic arm one end is arranged in the base arm, and its other end is connected by roller shaft with the roller, the guarantor
Protection unit includes support bar and ball, and described support bar one end is arranged in the base arm, and the ball is arranged on described
The other end of support bar, the balancing pole bottom is provided with roller groove, and its top is provided with dowel hole, and the roller-coaster is arranged
In the roller groove, the scale pan is arranged on the alignment pin, and the alignment pin is arranged in the dowel hole.
2. physics teaching according to claim 1 lever principle demonstration teaching aid, it is characterised in that：The roller is by rolling
Wheel shaft is arranged on telescopic arm top termination, and symmetrical along telescopic arm left and right directions.
3. physics teaching according to claim 1 lever principle demonstration teaching aid, it is characterised in that：The support bar is arranged
In the left and right sides of the base arm bottom, and base arm left and right directions is symmetrical.
4. physics teaching according to claim 1 lever principle demonstration teaching aid, it is characterised in that：The support bar and institute
It is in 60 ° of angles that base arm is stated in vertical direction.
5. physics teaching according to claim 1 lever principle demonstration teaching aid, it is characterised in that：The physics teaching is used
Lever principle demonstration teaching aid also includes counterweight, and the counterweight is arranged in the scale pan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620846272.8U CN206097623U (en) | 2016-08-08 | 2016-08-08 | Lever principle demonstration teaching aid for physics teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620846272.8U CN206097623U (en) | 2016-08-08 | 2016-08-08 | Lever principle demonstration teaching aid for physics teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206097623U true CN206097623U (en) | 2017-04-12 |
Family
ID=58466777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620846272.8U Expired - Fee Related CN206097623U (en) | 2016-08-08 | 2016-08-08 | Lever principle demonstration teaching aid for physics teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206097623U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108109486A (en) * | 2017-12-19 | 2018-06-01 | 彭芙贞 | A kind of physics teaching lever dynamics apparatus for demonstrating |
| CN109671337A (en) * | 2019-01-23 | 2019-04-23 | 许芮萌 | A kind of apparatus for demonstrating for object Level tune |
| CN111829722A (en) * | 2020-06-11 | 2020-10-27 | 西安法士特汽车传动有限公司 | Torque flange calibration device |
-
2016
- 2016-08-08 CN CN201620846272.8U patent/CN206097623U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108109486A (en) * | 2017-12-19 | 2018-06-01 | 彭芙贞 | A kind of physics teaching lever dynamics apparatus for demonstrating |
| CN109671337A (en) * | 2019-01-23 | 2019-04-23 | 许芮萌 | A kind of apparatus for demonstrating for object Level tune |
| CN111829722A (en) * | 2020-06-11 | 2020-10-27 | 西安法士特汽车传动有限公司 | Torque flange calibration device |
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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: 20170412 Termination date: 20180808 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |