CN208848449U - High school physics lever demonstration device - Google Patents
High school physics lever demonstration device Download PDFInfo
- Publication number
- CN208848449U CN208848449U CN201820448200.7U CN201820448200U CN208848449U CN 208848449 U CN208848449 U CN 208848449U CN 201820448200 U CN201820448200 U CN 201820448200U CN 208848449 U CN208848449 U CN 208848449U
- Authority
- CN
- China
- Prior art keywords
- wraping plate
- framework
- screw rod
- high school
- lifting device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model relates to teaching equipment fields, especially high school physics lever demonstration device.The lever demonstration device includes wraping plate, framework, handle screw rod, tensiometer, counterweight, pedestal and lifting device, described wraping plate one end is connected with tensiometer, the wraping plate other end is connected with counterweight, the bottom end of lifting device is fixed on the base, the end of the straight moving part of lifting device and framework are hinged, wraping plate passes through framework, and the handle screw rod for pushing up solid wraping plate is equipped in framework.The utility model agitates effect caused by different location fulcrum to realize to adjust the position between lever and fulcrum by sliding of the framework on wraping plate.And the angle that can be overturn according to wraping plate is different, to adjust liftoff position, to avoid because of insufficient height, and hampers the effect of actual presentation.
Description
Technical field
The utility model relates to teaching equipment fields, especially high school physics lever demonstration device.
Background technique
Existing lever demonstration device can only simply push one end of lever, to allow lever to connect the other end of counterweight
It tilts, is demonstrated with this.But existing lever can not adjust position of the fulcrum on lever, and can not be according to lever
The angle of tilting, to adjust the liftoff height of lever.
Utility model content
Technical problem to be solved by the utility model is: in order to solve the deficiency that existing lever can not be adjusted, this is practical
It is novel to provide a kind of high school physics lever demonstration device, by sliding of the framework on wraping plate, come adjust lever and fulcrum it
Between position, agitate effect caused by different location fulcrum to realize.And the angle that can be overturn according to wraping plate is different,
It adjusts liftoff position, to avoid because of insufficient height, and hampers the effect of actual presentation.
The technical scheme adopted by the utility model to solve the technical problem is as follows:
A kind of high school physics lever demonstration device, including wraping plate, framework, handle screw rod, tensiometer, counterweight, pedestal and liter
Falling unit, described wraping plate one end are connected with tensiometer, and the wraping plate other end is connected with counterweight, and the bottom end of lifting device is fixed on pedestal
On, the end of the straight moving part of lifting device and framework are hinged, and wraping plate passes through framework, are equipped in framework for pushing up solid wraping plate
Handle screw rod.
Specifically, the lifting device is made of rotation motor, gear, rack gear and square tube, and rack gear is slidably connected at square tube
Interior, rack and pinion is meshed, and gear is fixed in the shaft of rotation motor, and rack gear top and framework are hinged, and square tube bottom end is solid
It is scheduled on pedestal.
Specifically, the wraping plate end face is equipped with length scale.
Specifically, the screw body of the handle screw rod penetrates in framework, and the screw body end point of handle screw rod is fixed with silicon
Blob of viscose.
Specifically, the pulling end of the tensiometer is connected with pull ring.
The beneficial effects of the utility model are: the utility model provides a kind of high school physics lever demonstration device, pass through
Sliding of the framework on wraping plate, to adjust the position between lever and fulcrum, to realize sled caused by different location fulcrum
Dynamic effect.And the angle that can be overturn according to wraping plate is different, to adjust liftoff position, thus avoid because of insufficient height, and
Hamper the effect of actual presentation.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the framework of the utility model and the structural schematic diagram of handle screw rod；
1. wraping plate in figure, 2. frameworks, 3. handle screw rods, 4. tensiometers, 5. counterweights, 6. pedestals, 7. rotation motors, 8. teeth
Wheel, 9. rack gears, 10. square tubes, 11. silica gel blocks, 12. pull rings.
Specific embodiment
The utility model is described in further detail presently in connection with attached drawing.These attached drawings are simplified schematic diagram,
Only illustrate the basic structure of the utility model in a schematic way, therefore it only shows composition related with the utility model.
Fig. 1 is the structural schematic diagram of the utility model, and Fig. 2 is the framework of the utility model and the structural representation of handle screw rod
Figure.
A kind of high school physics lever demonstration device, including wraping plate 1, framework 2, handle screw rod 3, tensiometer 4, counterweight 5, pedestal
6 and lifting device, described 1 one end of wraping plate be connected with tensiometer 4,1 other end of wraping plate is connected with counterweight 5, the bottom end of lifting device
It is fixed on pedestal 6, the end of the straight moving part of lifting device and framework 2 are hinged, and wraping plate 1 passes through framework 2, wear in framework 2
Equipped with the handle screw rod 3 for pushing up solid wraping plate 1.The lifting device is made of rotation motor 7, gear 8, rack gear 9 and square tube 10,
Rack gear 9 is slidably connected in square tube 10, and rack gear 9 is meshed with gear 8, and gear 8 is fixed in the shaft of rotation motor 7, rack gear 9
Top and framework 2 are hinged, and 10 bottom end of square tube is fixed on pedestal 6.1 end face of wraping plate is equipped with length scale.The handle
The screw body of screw rod 3 penetrates in framework 2, and the screw body end point of handle screw rod 3 is fixed with silica gel block 11.The tensiometer 4
Pulling end is connected with pull ring 12.
In conjunction with shown in attached drawing 1 and attached drawing 2, wraping plate 1 is moved forward and backward along framework 2 first, so that wraping plate 1 and framework
Position between 2 is adjusted in place, and the handle for holding handle screw rod 3 at this time is rotated, and such screw rod 3 will be along in framework 2
Threaded hole constantly move down, the screw body 3 of handle screw rod 3 drives silica gel block 11 mobile toward the direction of wraping plate 1, until silica gel block 11
It fits on wraping plate 1, such wraping plate 1, which will be clamped between silica gel block 11 and framework 2, realizes fixation.This completes thick sticks
The fixation of bar and position of the fulcrum.And the scale of 1 upper surface of wraping plate, allow user to be clear how the length of the lever at fulcrum both ends
Degree.
Then select the counterweight 5 of approrpiate wts to hang one end of wraping plate 1, at this time according to the length of the counterweight 5 hung and
The angle to be overturn of wraping plate 1, the height with lifting device adjustment wraping plate 1 apart from pedestal 6.When adjusting height, starting turns
Dynamic motor 7, the driving that the rack gear 9 that rotation motor 7 drives gear 8 to be rotated, and engaged with gear 8 will be rotated in gear 8
Under, carry out linear movement up and down.Since 9 side of rack gear is equipped with slide plate, 10 inner wall of square tube is equipped with sliding rail, and slide plate is placed in sliding rail
It is interior, therefore rack gear 9 can carry out linear movement up and down along the sliding rail in square tube 10.It is hinged with rack gear 9 when rack gear 9 moves up and down
Framework 2 will be moved up and down with wraping plate 1, thus achieve the purpose that change its height.
Finally only need to pull pull ring 12 so that wraping plate 1 is overturn along the axis of 2 bottom end of framework, at this time with pull ring 12
The tensiometer 4 of connection can show pulling force data.This completes the demonstrations of entire lever.
It is enlightenment, through the above description, related work people with the above-mentioned desirable embodiment according to the utility model
Member can carry out various changes and amendments in the range of without departing from this item utility model technical idea completely.This item is real
It is not limited to the contents of the specification with novel technical scope, it is necessary to its technology is determined according to scope of the claims
Property range.
Claims (5)
1. a kind of high school physics lever demonstration device, characterized in that including wraping plate (1), framework (2), handle screw rod (3), pulling force
Meter (4), counterweight (5), pedestal (6) and lifting device, described wraping plate (1) one end are connected with tensiometer (4), wraping plate (1) other end
It is connected with counterweight (5), the bottom end of lifting device is fixed on pedestal (6), the end of the straight moving part of lifting device and framework
(2) hingedly, wraping plate (1) passes through framework (2), and the handle screw rod (3) for pushing up solid wraping plate (1) is equipped in framework (2).
2. high school physics lever demonstration device according to claim 1, it is characterised in that: the lifting device is by rotating horse
It is formed up to (7), gear (8), rack gear (9) and square tube (10), rack gear (9) is slidably connected in square tube (10), rack gear (9) and gear
(8) be meshed, gear (8) is fixed in the shaft of rotation motor (7), rack gear (9) top and framework (2) hingedly, square tube (10)
Bottom end is fixed on pedestal (6).
3. high school physics lever demonstration device according to claim 1, it is characterised in that: set on wraping plate (1) end face
There is length scale.
4. high school physics lever demonstration device according to claim 1, it is characterised in that: the spiral shell of the handle screw rod (3)
The body of rod penetrates in framework (2), and the screw body end point of handle screw rod (3) is fixed with silica gel block (11).
5. high school physics lever demonstration device according to claim 1, it is characterised in that: the pulling of the tensiometer (4)
End is connected with pull ring (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820448200.7U CN208848449U (en) | 2018-04-02 | 2018-04-02 | High school physics lever demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820448200.7U CN208848449U (en) | 2018-04-02 | 2018-04-02 | High school physics lever demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208848449U true CN208848449U (en) | 2019-05-10 |
Family
ID=66349819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820448200.7U Expired - Fee Related CN208848449U (en) | 2018-04-02 | 2018-04-02 | High school physics lever demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208848449U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113450632A (en) * | 2021-07-08 | 2021-09-28 | 刘长仕 | Transmission device based on lever principle |
-
2018
- 2018-04-02 CN CN201820448200.7U patent/CN208848449U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113450632A (en) * | 2021-07-08 | 2021-09-28 | 刘长仕 | Transmission device based on lever principle |
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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: 20190510 Termination date: 20200402 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |