CN203276665U - A train turning demonstration teaching aid - Google Patents
A train turning demonstration teaching aid Download PDFInfo
- Publication number
- CN203276665U CN203276665U CN 201320305015 CN201320305015U CN203276665U CN 203276665 U CN203276665 U CN 203276665U CN 201320305015 CN201320305015 CN 201320305015 CN 201320305015 U CN201320305015 U CN 201320305015U CN 203276665 U CN203276665 U CN 203276665U
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- track
- train
- teaching aid
- semi arch
- straight
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Abstract
The utility mode discloses a train turning demonstration teaching aid comprising a toy train track system and a demonstration circuit. The demonstration circuit comprises a circuit board, a resistor, force-sensitive resistors, a hysteresis comparator, a power supply, and LED lamps with different colors. The toy train track system comprises toy train tracks, a toy train, a hardboard pedestal, and a latticed support with raising the track. The toy train tracks comprise straight tracks and a semicircular track. The vertical latticed support is disposed on one end of a straight track, while the semicircular track is disposed on the other end of the straight track. A connecting port is maintained smooth. Slots arranged longitudinally are disposed on the latticed support. A raising plate is installed under the straight track. Single-side track raisers are installed at the semicircular track. The force-sensitive resistors are installed on the inner side of the track at the joint between the straight tracks and the semicircular track and are connected with the hysteresis comparator. The LED lamps are disposed to display the comparison of force on the inner track and force on the outer track.
Description
Technical field
The utility model relates to a kind of mini train turning demonstration teaching aid, is used for the senior middle school physics teaching demonstration.
Background technology
In teaching of senior high school, in the centripetal force problem of circular motion and mini train, the stressed problem of outer rail is the difficult point of teaching always.But existing teaching aid is comprehensive not to the displaying of centripetal force knowledge, and the stressed problem of outer rail in mini train is demonstrated without teaching aid, and the student can't intuitively profoundly understand intension wherein.And the instrument that we design has good intuitive and vividness, can help better the knowledge of Students ' Learning circular motion.
Mini train turning demonstration teaching aid is according in first chapter 5 of existing high school physics (required) the 6th joint " uniform circular motion instance analysis ", when turning about dolly, the railway outer rail provides the centripetal force concept, visually with track, and railway turning outer rail height in low circumstances and the relevant stress thereof of rail represent clearly.And this teaching aid utilizes the knowledge of Analog Electronics Technique, and force sensing resistance is applied in teaching aid, and in the time of can observing more intuitively train and turn, because the variation of speed, and the internal pressure condition of outside track helps the student to understand better knowledge content.
The design of this teaching aid can be held as drawing within the class period of attending class of high school teachers, first knowledge was showed the student with lively teaching aid before can be at school, excited student's interest, improved the quality of attending class.
The utility model content
Technical problem to be solved in the utility model be to provide a kind of have whether to overturn with dolly intuitively show centripetal force size and source, and the mini train turning demonstration teaching aid that whether represents with the light on and off of lamp on circuit.
the utility model is achieved through the following technical solutions: a kind of mini train turning demonstration teaching aid, it is comprised of toy small train rail system and illustrative circuitry, illustrative circuitry comprises circuit board, resistance, force sensing resistance, hysteresis loop comparator, the LED lamp of power supply and different colours, the toy train rail system comprises the toy small train track, toy small train, the lattice support that cardboard base and track are raised, the mini train track comprises straight rail and semi arch track, at straight rail one end, vertical lattice support is set, at the other end, the semi arch track is set, it is level and smooth that connector keeps, the draw-in groove of longitudinal arrangement is set on the lattice support, the straight rail lower end has been installed and has been lifted plate, single-track lifting device is installed at the place at the semi arch track, track installed inside force sensing resistance in the joint of straight rail and semi arch track, and be connected with hysteresis loop comparator.
Further technical scheme, can load and unload the counterweight that changes its quality on described mini train.
Further technical scheme, single-track lifting device is provided with three, and equal angles be arranged on mini train semi arch track lower end.
The beneficial effects of the utility model are: this teaching aid is with centripetal force equation in secondary curriculum
The books example excessively curved with train combines, and sets out by height, the quality of mini train and the height of interior outside track that changes track for a train, changes the factors such as quality, orbit radius and speed in the centripetal force formula, the change condition of qualitative analysis centripetal force.Simultaneously, on track for a train inboard both sides, a force sensing resistance is set respectively, by voltage comparator circuit, with the LED lamp visually with the stressed size of interior outside track more out.Give student's the classroom enjoyment of taking, show the relation between each key element and centripetal force more visual in imagely.
Description of drawings
In order to be easy to explanation, the utility model is done to describe in detail by following specific embodiment and accompanying drawing.
Fig. 1 be mini train turning demonstration teaching aid of the present utility model the structure schematic top plan view.
Fig. 2 is the structure front elevational schematic of the toy train rail system of mini train turning demonstration teaching aid of the present utility model.
Fig. 3 is the circuit diagram of the illustrative circuitry of mini train turning demonstration teaching aid of the present utility model.
Embodiment
as shown in Figure 1, a kind of mini train turning demonstration teaching aid, it is comprised of toy small train rail system and illustrative circuitry, illustrative circuitry comprises circuit board, resistance, force sensing resistance, hysteresis loop comparator, the LED lamp of power supply and different colours, the toy train rail system comprises the toy small train track, toy small train, the lattice support 2 that cardboard base 6 and track are raised, the mini train track comprises straight rail 3 and semi arch track 5, at straight rail 7 one ends, vertical lattice support 2 is set, at the other end, semi arch track 5 is set, it is level and smooth that connector keeps, the draw-in groove 1 of longitudinal arrangement is set on lattice support 2, straight rail 3 lower ends have been installed and have been lifted plate 7, single-track lifting device 4 is installed at 5 places at the semi arch track, at the track installed inside force sensing resistance of straight rail 3 with the joint of semi arch track 5, and be connected with hysteresis loop comparator.
A kind of optimal way of the present utility model can load and unload the counterweight that changes its quality on described mini train.
A kind of optimal way of the present utility model, single-track lifting device 4 is provided with three, and equal angles be arranged on mini train semi arch track 5 lower ends.
The beneficial effects of the utility model are: this teaching aid is with centripetal force equation in secondary curriculum
The books example excessively curved with train combines, and sets out by height, the quality of mini train and the height of interior outside track that changes track for a train, changes the factors such as quality, orbit radius and speed in the centripetal force formula, the change condition of qualitative analysis centripetal force.Simultaneously, on track for a train inboard both sides, a force sensing resistance is set respectively, by voltage comparator circuit, with the LED lamp visually with the stressed size of interior outside track more out.Give student's the classroom enjoyment of taking, show the relation between each key element and centripetal force more visual in imagely.
The above be only embodiment of the present utility model, but protection domain of the present utility model is not limited to this, and any variation or replacement of expecting without creative work is within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain that claims were limited.
Claims (3)
1. mini train turning demonstration teaching aid, it is comprised of toy small train rail system and illustrative circuitry, illustrative circuitry comprises circuit board, resistance, force sensing resistance, hysteresis loop comparator, the LED lamp of power supply and different colours, the toy train rail system comprises the toy small train track, toy small train, the lattice support that cardboard base and track are raised, it is characterized in that: the mini train track comprises straight rail and semi arch track, at straight rail one end, vertical lattice support is set, at the other end, the semi arch track is set, it is level and smooth that connector keeps, the draw-in groove of longitudinal arrangement is set on the lattice support, the straight rail lower end has been installed and has been lifted plate, single-track lifting device is installed at the place at the semi arch track, track installed inside force sensing resistance in the joint of straight rail and semi arch track, and be connected with hysteresis loop comparator.
2. mini train turning demonstration teaching aid as claimed in claim 1, is characterized in that: can load and unload the counterweight that changes its quality on described mini train.
3. mini train turning demonstration teaching aid as claimed in claim 1, it is characterized in that: single-track lifting device is provided with three, and equal angles be arranged on mini train semi arch track lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320305015 CN203276665U (en) | 2013-05-30 | 2013-05-30 | A train turning demonstration teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320305015 CN203276665U (en) | 2013-05-30 | 2013-05-30 | A train turning demonstration teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203276665U true CN203276665U (en) | 2013-11-06 |
Family
ID=49507030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320305015 Expired - Fee Related CN203276665U (en) | 2013-05-30 | 2013-05-30 | A train turning demonstration teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203276665U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110556039A (en) * | 2019-08-28 | 2019-12-10 | 天津城建大学 | Device for demonstrating influence of gravity center of vehicle on height |
-
2013
- 2013-05-30 CN CN 201320305015 patent/CN203276665U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110556039A (en) * | 2019-08-28 | 2019-12-10 | 天津城建大学 | Device for demonstrating influence of gravity center of vehicle on height |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20140530 |