CN108305542A - A kind of physics experiment teaching lever principle apparatus for demonstrating - Google Patents
A kind of physics experiment teaching lever principle apparatus for demonstrating Download PDFInfo
- Publication number
- CN108305542A CN108305542A CN201810421398.4A CN201810421398A CN108305542A CN 108305542 A CN108305542 A CN 108305542A CN 201810421398 A CN201810421398 A CN 201810421398A CN 108305542 A CN108305542 A CN 108305542A
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- China
- Prior art keywords
- balancing pole
- supporting rod
- shaft
- lever principle
- experiment teaching
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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
- G09B23/08—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics
- G09B23/10—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics of solid bodies
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- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Business, Economics & Management (AREA)
- Mathematical Physics (AREA)
- Algebra (AREA)
- Computational Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Pure & Applied Mathematics (AREA)
- Instructional Devices (AREA)
Abstract
The invention discloses a kind of physics experiment teaching lever principle apparatus for demonstrating, including supporting rod, balancing pole, hanging weight tray, tote box, pedestal, baffle and shaft, the bottom of the supporting rod is equipped with pedestal, tote box is arranged in the upper end of the pedestal, the upper end centre position of the supporting rod is provided with shaft, the shaft is mounted on the centre position of balancing pole, and the bottom of the balancing pole is provided at both ends with hanging weight tray；The surface location of the balancing pole is evenly provided with hanging hole, and the both ends of the balancing pole are both provided with fine-tuning nut.The baffle that the present invention is mounted on supporting rod can effectively avoid balancing pole weightlessness power is excessive counterweight is caused to fall；It is connected by shaft between supporting rod and balancing pole when use of the present invention, the both ends of balancing pole are separately installed with fine-tuning nut, and balancing pole can be adjusted to balance by adjusting fine-tuning nut by rotation, to intuitively accomplish to be convenient for observation of students and understanding.
Description
Technical field
The invention belongs to physics teaching technical fields, and in particular to a kind of physics experiment teaching lever principle demonstration dress
It sets.
Background technology
Lever, which is divided into, claims laborious lever, laborsaving lever and bascule, and lever principle is also referred to as " lever equilibrium condition ".It wants
Make lever balance, two torques (product of the power and the arm of force) size acted on lever must be equal.I.e.：Power × power arm
=resistance × resistance arm, F1L1=F2L2 is indicated with algebraic expression.In formula, F1 indicates that power, L1 indicate that power arm, F2 indicate
Resistance, L2 indicate resistance arm.It can be seen that from above formula, so that lever is reached balance, power arm is several times of resistance arm, and resistance is exactly
Several times of power.When using lever, in order to laborsaving, the lever of power arm specific resistance brachium should be just used；If it is intended to save away from
From the lever that should just use the power arm resistivity arm of force short.Therefore can be laborsaving using lever, distance can also be saved.But to
It is laborsaving, it just must more displacement distances；To few displacement distance, just it must take a little power more.To again laborsaving and few displacement distance,
It is impossible.The fulcrum of lever is not necessarily intended to meet the system of following three point in centre, is basically lever：
Fulcrum, the point of application, stress point.
The prior art has the following problems：Currently, in Physics Course, many concepts and law on textbook are required for drilling
Show and prove, student can be allowed more intuitively to observe and test, especially in the teaching of power and the arm of force, experimental lever balance
When condition, the length of lever is nonadjustable, to obtain multi-group data and the lever of different length is just needed to complete, operation fiber crops
It is tired, so as to cause the problem of quality of instruction difference.
Invention content
To solve the problems mentioned above in the background art.The present invention provides a kind of physics experiment teaching lever principles
Apparatus for demonstrating has the characteristics that easy to operate and adjustable.
To achieve the above object, the present invention provides the following technical solutions：A kind of physics experiment teaching is demonstrated with lever principle
Device, including supporting rod, balancing pole, hanging weight tray, tote box, pedestal, baffle and shaft, the bottom peace of the supporting rod
Equipped with pedestal, the centre position of the supporting rod is equipped with baffle, and tote box is arranged in the upper end of the pedestal, the supporting rod
Upper end centre position is provided with shaft, and the shaft is mounted on the centre position of balancing pole, and the bottom both ends of the balancing pole are set
It is equipped with hanging weight tray；
The balancing pole includes hanging hole, fine-tuning nut and graduated scale, wherein the surface location of the balancing pole is uniformly set
It is equipped with hanging hole, the upper end of the balancing pole is provided with graduated scale, and the both ends of the balancing pole are both provided with fine-tuning nut.
Preferably, the supporting rod is fixedly connected with balancing pole by shaft.
Preferably, the baffle is installed by card slot and is fixed.
Preferably, the hanging weight tray is attached fixation by buckling into hanging hole.
Preferably, the graduated scale passes through glue and balancing pole adhesion.
Preferably, the bottom of the pedestal is provided with non-slip mat.
Compared with prior art, the beneficial effects of the invention are as follows：
1, the baffle when present invention uses on supporting rod can effectively avoid balancing pole weightlessness power is excessive from causing
Counterweight is fallen, to play a protective role.
2, it is connected by shaft between supporting rod and balancing pole when the present invention uses, the both ends of balancing pole are separately installed with micro-
Nut is adjusted, balancing pole can be adjusted to balance by adjusting fine-tuning nut by rotation, to intuitively accomplish to be convenient for observation of students
And understanding.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the structural schematic diagram of balancing pole of the present invention.
In figure：1, supporting rod；2, balancing pole；21, hanging hole；22, fine-tuning nut；23, graduated scale；3, hanging weight tray；
4, tote box；5, pedestal；6, baffle；7, shaft.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
- 2 are please referred to Fig.1, the present invention provides following technical scheme：A kind of physics experiment teaching lever principle demonstration dress
It sets, including supporting rod 1, balancing pole 2, hanging weight tray 3, tote box 4, pedestal 5, baffle 6 and shaft 7, the bottom of supporting rod 1
Pedestal 5 is installed, the centre position of supporting rod 1 is equipped with baffle 6, and baffle 6 is installed by card slot and fixed, and the upper end of pedestal 5 is set
Tote box 4 is set, the bottom of pedestal 5 is provided with non-slip mat, and the upper end centre position of supporting rod 1 is provided with shaft 7, and shaft 7 is installed
In the centre position of balancing pole 2, the bottom of balancing pole 2 is provided at both ends with hanging weight tray 3, and supporting rod 1 passes through with balancing pole 2
Shaft 7 is fixedly connected；
Balancing pole 2 includes hanging hole 21, fine-tuning nut 22 and graduated scale 23, wherein the surface location of balancing pole 2 is uniformly set
It is equipped with hanging hole 21, hanging weight tray 3 is attached fixation by buckling into hanging hole 21, and the upper end of balancing pole 2 is provided with graduated scale
23, graduated scale 23 is both provided with fine-tuning nut 22 by glue and 2 adhesion of balancing pole, the both ends of balancing pole 2.
The operation principle and process for using of the present invention：The present invention is in use, first the tool to be used from tote box 4
It takes out, then tote box 4 is closed, then supporting rod 1 is fixed in the card slot of pedestal 5, baffle 6 is then mounted on branch
In the card slot of 1 medium position of strut, baffle 6 on supporting rod 1 can weightless power be excessive leads to counterweight to avoid balancing pole 2
It falls, to play a protective role, then balancing pole 2 is fixed on supporting rod 1 with shaft 7, check whether supporting rod 1 can be with
Angle is adjusted, then hanging weight tray 3 is buckled into corresponding hanging hole 21 according to graduated scale 23, in hanging weight tray 3
It is put into corresponding counterweight, it is on horizontal plane that whether observation balancing pole 2, which is maintained at, and balancing pole 2 according to the observation adjusts fine-tuning nut
22, balancing pole 2 is adjusted to balance, the tool used is dismantled successively after the completion of operation and is put into tote box 4.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of physics experiment teaching lever principle apparatus for demonstrating, including supporting rod (1), balancing pole (2), hanging weight tray
(3), tote box (4), pedestal (5), baffle (6) and shaft (7), it is characterised in that：The bottom of the supporting rod (1) is equipped with bottom
The centre position of seat (5), the supporting rod (1) is equipped with baffle (6), the upper end setting tote box (4) of the pedestal (5), institute
The upper end centre position for stating supporting rod (1) is provided with shaft (7), and the shaft (7) is mounted on the centre position of balancing pole (2),
The bottom of the balancing pole (2) is provided at both ends with hanging weight tray (3)；
The balancing pole (2) includes hanging hole (21), fine-tuning nut (22) and graduated scale (23), wherein the table of the balancing pole (2)
Face position is evenly provided with hanging hole (21), and the upper end of the balancing pole (2) is provided with graduated scale (23), the balancing pole (2)
Both ends be both provided with fine-tuning nut (22).
2. a kind of physics experiment teaching lever principle apparatus for demonstrating according to claim 1, it is characterised in that：The branch
Strut (1) is fixedly connected with balancing pole (2) by shaft (7).
3. a kind of physics experiment teaching lever principle apparatus for demonstrating according to claim 1, it is characterised in that：The gear
Plate (6) is installed by card slot and is fixed.
4. a kind of physics experiment teaching lever principle apparatus for demonstrating according to claim 1, it is characterised in that：The extension
Formula weight tray (3) is attached fixation by buckling into hanging hole (21).
5. a kind of physics experiment teaching lever principle apparatus for demonstrating according to claim 1, it is characterised in that：The quarter
Degree ruler (23) passes through glue and balancing pole (2) adhesion.
6. a kind of physics experiment teaching lever principle apparatus for demonstrating according to claim 1, feature in：The pedestal
(5) bottom is provided with non-slip mat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810421398.4A CN108305542A (en) | 2018-05-04 | 2018-05-04 | A kind of physics experiment teaching lever principle apparatus for demonstrating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810421398.4A CN108305542A (en) | 2018-05-04 | 2018-05-04 | A kind of physics experiment teaching lever principle apparatus for demonstrating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108305542A true CN108305542A (en) | 2018-07-20 |
Family
ID=62846563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810421398.4A Withdrawn CN108305542A (en) | 2018-05-04 | 2018-05-04 | A kind of physics experiment teaching lever principle apparatus for demonstrating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108305542A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109064844A (en) * | 2018-08-29 | 2018-12-21 | 广东海翔教育科技有限公司 | A kind of physics lesson regulations and parameters presentation device of theory |
| CN109637294A (en) * | 2019-01-26 | 2019-04-16 | 邹忠毅 | Physics experiment teaching demonstrating model |
-
2018
- 2018-05-04 CN CN201810421398.4A patent/CN108305542A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109064844A (en) * | 2018-08-29 | 2018-12-21 | 广东海翔教育科技有限公司 | A kind of physics lesson regulations and parameters presentation device of theory |
| CN109637294A (en) * | 2019-01-26 | 2019-04-16 | 邹忠毅 | Physics experiment teaching demonstrating model |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180720 |
|
| WW01 | Invention patent application withdrawn after publication |