CN207337729U - A kind of high school physics lever principle experimental provision - Google Patents
A kind of high school physics lever principle experimental provision Download PDFInfo
- Publication number
- CN207337729U CN207337729U CN201720890698.8U CN201720890698U CN207337729U CN 207337729 U CN207337729 U CN 207337729U CN 201720890698 U CN201720890698 U CN 201720890698U CN 207337729 U CN207337729 U CN 207337729U
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- CN
- China
- Prior art keywords
- fixedly connected
- lever
- fixed block
- block
- screw rod
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Abstract
The utility model discloses a kind of high school physics lever principle experimental provision, including base, it is characterized in that：The base is fixedly connected with support column bottom, the support column side is fixedly connected with one end of support plate, the other end of the support plate is fixedly connected with the base, the support top end is fixedly connected with fixed block, rectangle empty slot is provided with the middle part of the fixed block, the fixed block both ends have screw rod to pass through, and the hinged screw rod, the screw rod is placed in the empty slot of the fixed block, the screw rod is through the bottom of sliding block and is threadedly coupled the sliding block, the sliding block is fixedly connected with support post bottom, the support post top is hinged with moving block, protruding shaft before the moving block passes through the empty slot of lever.
Description
Technical field
Physics experiment teaching field is the utility model is related to, specifically, is related to a kind of high school physics lever principle experiment
Device.
Background technology
Lever principle is also known as " lever equilibrium condition ", to make lever balance, act on two torques (power and power on lever
The product of arm) size must it is equal, i.e.,：Power × power arm=resistance × resistance arm, F1L1=is expressed as with algebraic expression
F2L2, in formula, F1 represents power, and L1 represents power arm, and F2 represents resistance, and L2 represents resistance arm, can be seen that, make from above formula
Lever reaches balance, and power arm is several times of resistance arm, and power is exactly the part of resistance, and at present, lever principle is drilled
Show that the position of the fulcrum of experimental provision is all fixed, can not come in experimentation by adjusting the position of fulcrum into action edge
The length adjustment of arm and resistance arm.This is in place of the deficiencies in the prior art.
Utility model content
It is convenient to drill the technical problem to be solved by the present invention is to provide a kind of high school physics lever principle experimental provision
Show in lever principle experimentation and the position of balance pivot is adjusted, so as to demonstrate the length of different dynamic arm and resistance arm
Under leverage.
The utility model adopts the following technical solution realizes goal of the invention：
A kind of high school physics lever principle experimental provision, including base, it is characterized in that：The base is fixedly connected with support column
Bottom, the support column side are fixedly connected with one end of support plate, and the other end of the support plate is fixedly connected with the base, institute
State support top end and be fixedly connected with fixed block, be provided with rectangle empty slot in the middle part of the fixed block, there is spiral shell at the fixed block both ends
Bar is threadedly coupled through the screw rod is placed in the empty slot of the fixed block, and the screw rod passes through the bottom of sliding block and screw thread
Connect the sliding block, the sliding block is fixedly connected with support post bottom, and the support post top is hinged with moving block, described turn
Protruding shaft before motion block passes through the elongated slot of lever, and one end of the lever is hinged sliding axle, and the sliding axle is placed on eccentric sieve
In the empty slot track of disk, the eccentric part of the bias compass is fixedly connected with one end of connecting rod, and the other end of the connecting rod passes through hinge
The supporting rod connect is fixedly connected with handle, and the supporting rod bottom is fixedly connected with the fixed block, and the other end of the lever is hinged
The top of pull rod, the bottom of the pull rod connect holder by rope.
The advantages of prior art is compared, the utility model and good effect are：The object of constant weight is put in holder
Interior, rotary screw, screw rod is slided by thread belt movable slider on screw rod, and sliding block is adjusted to close to one end of eccentric compass,
Record the length of power arm and resistance arm respectively, at this time the resistance arm lengths of lever be more than power arm length, the one of lever
End is located at some equilbrium position in the empty slot track of eccentric compass by sliding axle, and shake handle, handle pass through connecting rod at this time
Eccentric compass is driven to rotate, when the top of eccentric compass rotates to one end of short radius by one side of major radius, sliding axle exists
The drive of eccentric compass empty slot track is pressed downwards, and the empty slot track that operator experiences eccentric compass this moment is axial by sliding
Under press the resistance dynamics of lever, allow classmate to think deeply the relation of power arm and resistance arm and suffered resistance, then proceed to rotate
Screw rod, sliding block is moved to one end away from eccentric compass, then shake handle, drag size when impression is shaken again, according to
The position of secondary adjusting slider, experience support post as fulcrum in diverse location handle apply effect dynamics size not
Together, lever principle experiment is completed.The utility model, which is realized, passes through integrated lever experimental provision, simplifies general experiment dress
Put, student is carried out thinking independently for lever principle by testing, and the utility model has the advantages of simple structure, is easy to grasp
Make, easy to promote.
Brief description of the drawings
Fig. 1 and Fig. 2 is the dimensional structure diagram of the utility model.
Fig. 3 is the side view of the utility model.
Fig. 4 is the top view of the utility model.
Fig. 5 is the front view of the utility model.
In figure：1st, screw rod, 2, pull rod, 3, support plate, 4, holder, 5, base, 6, support column, 7, fixed block, 8, sliding block,
9th, handle, 10, connecting rod, 11, supporting rod, 12, eccentric compass, 13, sliding axle, 14, moving block, 15, support post, 16, lever.
Embodiment
Below in conjunction with the accompanying drawings, an embodiment of the utility model is described in detail, it is to be understood that this
The protection domain of utility model and from the limitation of embodiment.
As Figure 1-Figure 5, the utility model includes base 5, and the base 5 is fixedly connected with 6 bottom of support column, the branch
6 side of dagger is fixedly connected with one end of support plate 3, and the other end of the support plate 3 is fixedly connected with the base 5, the support
6 top of column is fixedly connected with fixed block 7, and the middle part of fixed block 7 is provided with rectangle empty slot, and there is screw rod 1 at 7 both ends of fixed block
It is threadedly coupled through the screw rod 1 is placed in the empty slot of the fixed block 7, and the screw rod 1 passes through the bottom of sliding block 8 and spiral shell
Line connects the sliding block 8, and the sliding block 8 is fixedly connected with 15 bottom of support post, and 15 top of support post is hinged with rotation
Block 14, the protruding shaft before the moving block 14 pass through the elongated slot of lever 16, are used as the supporting point of the lever 16, the thick stick
One end of bar 16 is hinged sliding axle 13, and the sliding axle 13 is placed in the empty slot track of eccentric compass 12, the bias compass
12 eccentric part is fixedly connected with one end of connecting rod 10, and the other end of the connecting rod 10 is fixedly connected with handle through hinged supporting rod 11
Hand 9,11 bottom of supporting rod are fixedly connected with the fixed block 7, and the other end of the lever 16 is hinged the top of pull rod 2, institute
The bottom for stating pull rod 2 connects holder 4 by rope, scale is provided with lever 16, easy to Germicidal efficacy.
The workflow of the utility model is：The object of constant weight is put in 4 in holder, rotary screw 1, screw rod 1
Slided by thread belt movable slider 8 on screw rod 1, sliding block 8 is adjusted to, close to one end of eccentric compass 12, record respectively dynamic
The length of the arm of force and resistance arm, for the resistance arm lengths of lever 16 more than the length of power arm, one end of lever 16 passes through cunning at this time
Moving axis 13 is located at some equilbrium position in the empty slot track of eccentric compass 12, and shake handle 9, handle pass through 10 band of connecting rod at this time
Dynamic bias compass 12 rotates, when the top of eccentric compass 12 rotates to one end of short radius by one side of major radius, sliding axle
13 are pressed downwards in the drive of eccentric 12 empty slot track of compass, and the empty slot track that operator experiences eccentric compass 12 this moment passes through
Sliding axle 13 pulls down the resistance dynamics of lever 16, allows classmate to think deeply the relation of power arm and resistance arm and suffered resistance,
Rotary screw 1 is then proceeded to, sliding block 8 is moved to one end away from eccentric compass 12, then shake handle 9, impression again is shaken
The position of drag size, successively adjusting slider 8 when dynamic, experiences support post 15 and is applied as fulcrum handle 9 in diverse location
Of different sizes, the completion lever principle experiment of the effect dynamics added.
Disclosed above is only a specific embodiment of the utility model, and still, the utility model is not limited to this,
The changes that any person skilled in the art can think of should all fall into the scope of protection of the utility model.
Claims (1)
1. a kind of high school physics lever principle experimental provision, including base (5), it is characterized in that：The base (5) is fixedly connected with branch
Dagger (6) bottom, support column (6) side are fixedly connected with one end of support plate (3), and the other end of the support plate (3) is consolidated
Surely the base (5) is connected, support column (6) top is fixedly connected with fixed block (7), is provided with the middle part of the fixed block (7)
Rectangle empty slot, fixed block (7) both ends have screw rod (1) to be threadedly coupled through the screw rod (1) is placed on the fixed block
(7) in empty slot, the screw rod (1) is through the bottom of sliding block (8) and is threadedly coupled the sliding block (8), and the sliding block (8) is fixed
Support post (15) bottom is connected, support post (15) top is hinged with moving block (14), before the moving block (14)
Protruding shaft pass through the elongated slot of lever (16), one end of the lever (16) be hinged sliding axle (13), sliding axle (13) placement
In the empty slot track of eccentric compass (12), the eccentric part of the bias compass (12) is fixedly connected with one end of connecting rod (10), institute
The other end for stating connecting rod (10) is fixedly connected with handle (9) through hinged supporting rod (11), and supporting rod (11) bottom is fixed
The fixed block (7) is connected, the other end of the lever (16) is hinged the top of pull rod (2), and the bottom of the pull rod (2) passes through
Rope connection holder (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720890698.8U CN207337729U (en) | 2017-07-21 | 2017-07-21 | A kind of high school physics lever principle experimental provision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720890698.8U CN207337729U (en) | 2017-07-21 | 2017-07-21 | A kind of high school physics lever principle experimental provision |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207337729U true CN207337729U (en) | 2018-05-08 |
Family
ID=62376567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720890698.8U Expired - Fee Related CN207337729U (en) | 2017-07-21 | 2017-07-21 | A kind of high school physics lever principle experimental provision |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207337729U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113275871A (en) * | 2021-05-11 | 2021-08-20 | 慕贝尔汽车部件（太仓）有限公司 | Spring clamp assembling device |
-
2017
- 2017-07-21 CN CN201720890698.8U patent/CN207337729U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113275871A (en) * | 2021-05-11 | 2021-08-20 | 慕贝尔汽车部件（太仓）有限公司 | Spring clamp assembling device |
| CN113275871B (en) * | 2021-05-11 | 2023-03-07 | 慕贝尔汽车部件（太仓）有限公司 | Spring clamp assembling 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: 20180508 Termination date: 20190721 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |