CN206040005U - Projectile motion demonstration instrument - Google Patents
Projectile motion demonstration instrument Download PDFInfo
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- CN206040005U CN206040005U CN201620733174.3U CN201620733174U CN206040005U CN 206040005 U CN206040005 U CN 206040005U CN 201620733174 U CN201620733174 U CN 201620733174U CN 206040005 U CN206040005 U CN 206040005U
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Abstract
The utility model discloses a projectile motion demonstration instrument, the instrument includes: first track, the second track, first electro -magnet is fixed at first track upper portion end, has first difference in height with first track horizontal component end, the second electro -magnet is fixed on second track upper portion terminally, has the second difference in height rather than the horizontal component end, first difference in height is the same with the second difference in height, the third electro -magnet, highly fixed, take the magnetism one side with first track level end equal height, install on fixed litter (8), but the horizontal direction removal, the photoelectricity door -trip is installed in the terminal department of first track level, fixed litter, horizontal installation be at the top of organic glass board, the horizontal direction position of adjustable third electro -magnet. Through the utility model discloses, experimental strong, the characteristics such as the practicality is high, functionalization of observability to projectile motion that have realized.
Description
Technical field
This utility model is related to a kind of experiment teaching aid, more particularly to a kind of horizontal cast movement demonstration instrument device.
Background technology
Level throw motion is the classical forms of motion of a comparison in kinesiology, and object horizontal cast movement rule is also as emphasis
Imparted knowledge to students, and configured a related experiment.
But for many years, in specific experimental implementation, tested with picture, the track of object horizontal cast movement shows
It is now more difficult, it is impossible to the characteristics of making student's profound understanding level throw motion, and skillfully grasp the rule of level throw motion.
Utility model content
For problems of the prior art, the utility model proposes a kind of horizontal cast movement demonstration instrument device, the instrument
Including：
First track, installed in the top of poly (methyl methacrylate) plate；First track includes horizontal component and sloping portion, rake
Divide with a vertical an acute angle；The track horizontal end of the first track is contour with the 3rd electric magnet carrying magnetic one side；
Second track, installed in the bottom of poly (methyl methacrylate) plate；Second track includes horizontal component and sloping portion, rake
Divide with a vertical an acute angle；Second track horizontal component is rack-mount, and is connected with the 3rd track；First track and
With poly (methyl methacrylate) plate on a vertical plane, the first track and the second track there is second track identical to incline with horizontal plane
Angle；
First electric magnet, is fixed on the first rail superior portion end, has the first difference in height with the first track horizontal component end；
Second electric magnet, is fixed on the second rail superior portion end, has the second difference in height with its horizontal component end；Described
One difference in height is identical with the second difference in height；
3rd electric magnet, height are fixed, and carrying magnetic one side is contour with the first track horizontal end, installed in fixed litter
(8) on, can horizontal direction movement；
Photoelectricity door trip, at the first track horizontal end；
Fixed litter, is horizontally arranged at the top of poly (methyl methacrylate) plate, can adjust the horizontal direction position of the 3rd electric magnet；
Poly (methyl methacrylate) plate is vertically mounted on base；
Iron powder drawing board, is pasted onto the dead ahead of poly (methyl methacrylate) plate；
3rd track, the 3rd track are connected with the second track horizontal component end, and the 3rd track installation is on support；
Total power light, when demonstration instrument is powered, total power light can all be grown bright；
Synchronous control switch, can control the power-off and energization of the first electric magnet and the second electric magnet simultaneously；
Normal domestic use alternating current 220V is converted into the 8V unidirectional currents of circuit control module by transformator, and transformator is by general
Logical plug is connected to standard household AC electrical；
Circuit general switch, controls the power-off and energization of whole demonstration instrument；
Alternating current enters circuit general switch by transformator, and total power light is connected to transformator；Photoelectricity door trip with
And synchronous control switch is connected in parallel to circuit general switch；3rd electric magnet and photogate switch is connected, the first electric magnet and second electric
It is connected on synchronous control switch after Magnet parallel connection.
Wherein, the demonstration instrument also includes：
Base, is positioned on horizontal plane；
Support, support are arranged on base, in order to support the 3rd track and keep its level；Support abuts against lucite
On plate.
Receiving slit, is placed in front of base splint.
Wherein, the demonstration instrument also includes：Peripheral hardware video recording instrument.
Wherein, when plain ball passes through photoelectricity door trip, in door, light is blocked, and photoelectricity door trip is disconnected.
Wherein, synchronous control switch controls the power-off and energization of the first electric magnet and the second electric magnet simultaneously, it is ensured that first
Electric magnet and the power-off simultaneously of the second electric magnet, plain ball can discharge simultaneously.
By this utility model, realize that the ornamental to level throw motion test is strong, practicality is high, functionalization the features such as.
Description of the drawings
Fig. 1 show the schematic diagram of horizontal cast movement demonstration instrument device of the present utility model；
Fig. 2 is the circuit connection diagram of horizontal cast movement demonstration instrument device of the present utility model.
Specific embodiment
Below in conjunction with the accompanying drawings this utility model is elaborated.
It is illustrated in figure 1 the schematic diagram of horizontal cast movement demonstration instrument device of the present utility model.Below each several part in figure is carried out
Describe in detail.
Base 1：It is positioned on horizontal plane, is the one flat plate by made by hard plate material.
Track 2：Installed in the top of poly (methyl methacrylate) plate 9, inner-walls of duct is smooth, and resistance is all less or even can ignore
's.
Track 2 is pvc pipe, including horizontal component and sloping portion.Sloping portion is with a vertical an acute angle.Track 2
Track horizontal end and 6 carrying magnetic of electric magnet one side it is contour, make plain ball A do when level throw motion falls with plain ball C
It is highly equal at vertical direction.
Track 3：Track 3 is arranged on the bottom of poly (methyl methacrylate) plate 9, and track 3 is pvc pipe, including horizontal component and rake
Point.Sloping portion is with a vertical an acute angle.Horizontal component is arranged on support 12, and is connected with track 11.Track 3 is managed
Road inner wall smooth, resistance are all less or even negligible.Track 2 and track 3 are with poly (methyl methacrylate) plate 9 in a vertical plane
On, track 2 and track 3 and horizontal plane have identical angle of inclination.
Electric magnet 4：Upper end at PVC tracks 2 is fixed on, has the first difference in height with 2 horizontal component end of PVC tracks；
When electric magnet 4 is powered, carrying magnetic is held plain ball A by iron core；When 4 power-off of electric magnet, iron core will not carrying magnetic, release
Plain ball A is put, plain ball A slides along PVC tracks 2.
Electric magnet 5：Upper end at PVC tracks 3 is fixed on, has the second difference in height with its horizontal component end；Described
One difference in height is identical with the second difference in height, to guarantee that the plain ball B that the plain ball B of its release is discharged with electric magnet 4 has phase
Same initial velocity；When electric magnet 5 is powered, carrying magnetic is held plain ball B by iron core；When 5 power-off of electric magnet, iron core will not
Carrying magnetic, discharges plain ball B, and plain ball B slides along PVC tracks 3.
Electric magnet 6：Highly fixed, carrying magnetic one side is contour with 2 horizontal end of track, on fixed litter 8, can water
Square to movement, the steel ball pick-up point of convenient adjustment vertical direction motion；When the solenoid is energized, carrying magnetic is held by iron core
Plain ball C；When electric magnet power-off, iron core will not carrying magnetic, discharge plain ball C.
Photoelectricity door trip 7：At 2 horizontal end of track, when energized, electric magnet 6 produces magnetic, adsorbs steel ball for position.
When the plain ball A on track 2 is by photogate switching moments, in door, light is blocked, and switch is disconnected, and adsorbs in electric magnet
Plain ball C on 6 is released.Steel ball A, B, C size is identical.
Fixed litter 8：It is highly fixed, the top of poly (methyl methacrylate) plate 9 is horizontally arranged at, the level side of electric magnet 6 is can adjust
To position.
Poly (methyl methacrylate) plate 9：It is vertically mounted on base 1.Poly (methyl methacrylate) plate 9 as one piece of supporting plate, why without glass
Glass plate or plank, are because that glass plate is frangible, are inconvenient to punch and tighten up a screw, and board surface is readily bent and is easily corroded,
And poly (methyl methacrylate) plate then just compensate for disadvantage mentioned above.It should be noted that this tests certain part is related to magnetic steel ball, therefore
Also iron plate is excluded in terms of selection.
Iron powder drawing board 10：The dead ahead of poly (methyl methacrylate) plate 9 is pasted onto, thickness of thin more smaller than poly (methyl methacrylate) plate 9 can be random
Dismounting.(iron powder is not necessarily intended to colour, and black is optimal)
Track 11：Track 11 is transparent, is connected with 3 horizontal component end of track, and track 11 is arranged on support 12.Rail
The material in road 11 manages interior smooth, level, it is ensured that plain ball B can make at the uniform velocity straight in the presence of not by external force as track 3
Line is moved；Transparent pvc pipe is selected why in addition, be because that steel ball is readily susceptible to observation of students experimental phenomena in the interior slip of pipe
(slip or collision of steel ball).
Support 12：Support 12 is arranged on base 1, for supporting track 11 and keeps its level.Support 12 has been abutted against
On machine glass plate 9.
Receiving slit 13：After steel-ball collision, for avoiding steel ball from being scattered on the ground, therefore in front of 1 clamping plate of base group one is added to be equipped with
The cuboid receiving slit of foam-rubber cushion.
Total power light 14：(no matter whether electric magnet 4 and 5 is powered), total power light when demonstration instrument is powered
14 can all grow it is bright.
Synchronous control switch 15：Switch left and right is stirred can be while control the power-off and energization of electric magnet 4 and 5.Synchronization Control
Switch 15, controls electric magnet 4 and 5, it is ensured that they are while power-off, plain ball A and B can discharge simultaneously.Control when closure is synchronous
During system switch 15, electric magnet 4 and 5 is powered, and produces magnetic absorption plain ball A and B；When synchronous control switch 15 is opened, electricity
Magnet 4 and 5 power-off, magnetic disappear, and plain ball A and B are released.
Transformator 16：Normal domestic use alternating current 220V is converted into into the 8V unidirectional currents of circuit control module.Transformator 16 leads to
Cross ordinary plug and be connected to standard household AC electrical.
Circuit general switch 17：Control the power-off and energization of whole demonstration instrument, the power-off of major control electric magnet 4,5,6 with
It is powered, the energization and power-off of electric magnet 4 and 5 is controlled simultaneously by synchronous control switch 15, electromagnetism is controlled by photoelectricity door trip 7
The energization and power-off of ferrum 6.It should be noted that it is total not to be described total power light 14, transformator 16, circuit in FIG
Switch 17, photoelectricity door trip 7, synchronous control switch 15, electric magnet 4, the circuit connecting relation between 5,6, concrete annexation
There are specific descriptions in fig. 2.
Peripheral hardware video recording 18 (not shown) of instrument：Video instrument photographing request is not less than 30 frame per second, is installed on tester
At two meters of material dead ahead, it is ensured that can clearly record the whole motor process of lower steel ball, video instrument switching requirements are synchronously controlled in electric magnet
Switch open front opening processed, so as to the whole motor process of complete documentation steel ball.
Fig. 2 is the circuit connection diagram of horizontal cast movement demonstration instrument device of the present utility model.From fig. 2 it can be seen that handing over
Stream electricity enters circuit general switch 17 by transformator 16, and total power light 14 is connected to transformator 16, total after being powered to ensure
Power supply indicator 14 keeps normal bright state；Photoelectricity door trip 7 and synchronous control switch 15 are connected in parallel to circuit general switch 17；Electromagnetism
Ferrum 6 is connected with photoelectricity door trip 7, is connected on synchronous control switch 15 after 5 parallel connection of electric magnet 4 and electric magnet.Circuit general switch
17 control photoelectricity door trip 7 and synchronous control switch 15.Close when circuit general switch 17, when synchronous control switch 15 is also closed,
Electric magnet 4 and 5 is powered, and produces magnetic, adsorbs plain ball A and B.
Below of the present utility model use is described specifically.
1. adjust track 2 and track 3 arrives most appropriate position, it is ensured that the terminal horizontal of track 2 and track 3；Put in track 3
Magnetic steel ball simultaneously allows magnetic steel ball to slide, to describe the track of horizontal direction.Magnetic steel ball is put down in vertical direction, to
The track of description vertical direction.Magnetic steel ball is slided by PVC tracks 2, in-orbit 2 end of road of magnetic steel ball is dished out, and work is flat to throw fortune
It is dynamic, to describe the track of level throw motion.
2. plain ball A and B (note：Plain ball not carrying magnetic) hold in 3 upper end of track 2 and track, disconnect synchronous
Controlling switch 15, allows plain ball A and B while falling.Plain ball A, B, C are held on electric magnet 4,5,6 respectively, is broken
Open synchronous control switch 15, it is possible to achieve " collision of three balls ".
The maximum bright spot of this experiment be intended to by " collision of three balls " phenomenon (plain ball for doing level throw motion at the same with
One horizontal direction does linear uniform motion and vertical direction does the collision that the plain ball of the movement of falling object occurs), from
And the decomposition of level throw motion is further probed into, but impact moment naked eyes are difficult to observation in detail, therefore the instrument is innovatively by peripheral hardware
Video recording is recorded to collision process.
When needing to describe steel ball level throw motion, horizontal direction and during vertical direction track, electric magnet 4, electric magnet 5,
And plain ball at electric magnet 6, is discharged respectively.
1. the description of track
This demonstration instrument describes the track of motion using magnetic steel ball with magnetic powder drawing board.When magnetic steel ball is in horizontal rail
When streaking, a clearly horizontal trajectory can be left on magnetic powder drawing board.In the same manner, when under magnetic steel ball in the vertical direction freedom
When falling, a clearly vertical track can be also left on magnetic powder drawing board.Finally, after magnetic steel ball does level throw motion, in magnetic
Stay next parabola on pastel plate, and with the track and vertical direction of horizontal direction on intersection of locus a bit, so as to infer
Go out level throw motion to be horizontally oriented and the resultant motion on vertical direction.
2. module controls electro-magnet switch
The electric magnet of this demonstration instrument is realized that by DC electromagnet DC electromagnet belongs to one kind of electric magnet, electromagnetism
The operation principle of ferrum is mainly：After coil electricity, magnetic field energy is converted electrical energy into, produce stronger magnetic field, so as to ferromagnetic
Material produces a kind of electromagnetic component of sucking action.
This demonstration instrument has three electric magnet, respectively on two parallel orbits and on vertical direction.Two parallel rails
The electro-magnet switch in road, is controlled by a breaker device, makes two steel balls while falling, so as to ensure two beads in track
Minimum point has identical initial velocity.Electro-magnet switch on vertical direction then passes through photogate and 555 Timer Controllings.
During deenergization, the magnetic field that DC electromagnet is produced also disappears therewith, and bead is moved downward from the top of track along slide rail, when
When will make the bead of level throw motion and slide into slide rail end, steel ball will be by photogate, the electric magnet on vertical direction
Magnetic field also disappears therewith, and bead will make free-falling campaign.
3. steel-ball collision
The position of two parallel sliding track electric magnet of this teaching aid with the difference in height of corresponding slide rail minimum point be it is equal, from
And initial velocity is identical when ensureing that steel ball slides into minimum point by slide rail.When steel ball is slided by two parallel sliding tracks, one
Steel ball will make level throw motion, and another steel ball will make linear uniform motion, and two steel balls will collide in horizontal rail, thus
The distance of the steel ball that the distance for going out to make the steel ball horizontal direction of level throw motion makees linear uniform motion with horizontal direction is identical
, then make linear uniform motion in level throw motion horizontal direction.
When a steel ball is slided with electric magnet slide rail by the top makees level throw motion, steel ball passes through photogate wink
Between, by power-off, the steel ball of another absorption will make the movement of falling object to the electric magnet on vertical direction, and with make the steel of level throw motion
Ball collides, it was demonstrated that level throw motion vertical direction makees the movement of falling object.Finally, by three steel-ball collisions so as to demonstrate,proving
Bright level throw motion is horizontally oriented the resultant motion for making to make the movement of falling object on linear uniform motion vertical direction.
This utility model has the characteristics that：
1. principle is easy, and visual phenomenon is substantially interesting
This teaching aid track describes and steel-ball collision demonstrative process is obvious, is intuitively shown by magnetic powder plate and magnetic steel ball
The track of level throw motion.Meanwhile, bead can be controlled exactly simultaneously by electric magnet and photoelectricity door trip and dropped.
The track demonstrated using magnetic powder plate, phenomenon are substantially interesting, meet the understanding level of student, and principle is simple, are easy to learn
Physiology solution, simplicity of drawing materials.
2. self-control property, draw materials conveniently, environmental protection
(1) draw materials conveniently, the feature of environmental protection
This device is drawn materials environmental protection, and track is made with pvc pipe；Backboard adopts lucite, and material environment friendly, ruggedness are strong；
The drawing board of description track then uses magnetic powder drawing board, and recyclability is high；Base then uses one
(2) self-control property and novelty
The self-control of teaching aid and novelty guide rail and pvc pipe are made through bending and cutting repacking, realize track more
It is smooth, the frictional force of bead and track is reduced, the track of the level throw motion described using magnetic powder drawing board and magnetic steel ball is clearly bright
, can Reusability.
3. modularized design, safety
Device each several part be it is discrete, be independent of each other, to a certain extent ensure device stability；In addition, this device
The electricity that electro-magnet switch module is produced is 8V to the maximum, belongs to low-voltage DC, therefore the safety of device is ensured.
Although describing this utility model by embodiment, it will be appreciated by the skilled addressee that this utility model has perhaps
Shape changeable and change without deviating from spirit of the present utility model, it is desirable to appended claim include these deformation and change and not
Depart from spirit of the present utility model.
Claims (5)
1. a kind of horizontal cast movement demonstration instrument device, the instrument include：
First track (2), installed in the top of poly (methyl methacrylate) plate (9)；First track (2) includes horizontal component and sloping portion,
Sloping portion is with a vertical an acute angle；The track horizontal end of the first track (2) and the 3rd electric magnet (6) carrying magnetic one side
It is contour；
Second track (3), installed in the bottom of poly (methyl methacrylate) plate (9)；Second track (3) includes horizontal component and sloping portion,
Sloping portion is with a vertical an acute angle；Second track (3) horizontal component be arranged on support (12) on, and with the 3rd track
(11) it is connected；First track (2) and the second track (3) with poly (methyl methacrylate) plate (9) on a vertical plane, the first track (2)
There is identical angle of inclination with the second track (3) and horizontal plane；
First electric magnet (4), is fixed on the first track (2) upper end, has first high with the first track (2) horizontal component end
Degree is poor；
Second electric magnet (5), is fixed on the second track (3) upper end, has the second difference in height with its horizontal component end；It is described
First difference in height is identical with the second difference in height；
3rd electric magnet (6), height are fixed, and carrying magnetic one side is contour with the first track (2) horizontal end, installed in fixed litter
(8) on, can horizontal direction movement；
Photoelectricity door trip (7), at the first track (2) horizontal end；
Fixed litter (8), is horizontally arranged at the top of poly (methyl methacrylate) plate (9), can adjust the horizontal direction position of the 3rd electric magnet (6)
Put；
Poly (methyl methacrylate) plate (9) is vertically mounted on base (1)；
Iron powder drawing board (10), is pasted onto the dead ahead of poly (methyl methacrylate) plate (9)；
3rd track (11), the 3rd track (11) are connected with the second track (3) horizontal component end, and the 3rd track (11) is arranged on
On support (12)；
Total power light (14), when demonstration instrument is powered, total power light (14) can all be grown bright；
Synchronous control switch (15), can control the power-off and energization of the first electric magnet (4) and the second electric magnet (5) simultaneously；
Normal domestic use alternating current 220V is converted into the 8V unidirectional currents of circuit control module by transformator (16), and transformator (16) leads to
Cross ordinary plug and be connected to standard household AC electrical；
Circuit general switch (17), controls the power-off and energization of whole demonstration instrument；
Alternating current enters circuit general switch (17) by transformator (16), and total power light (14) is connected to transformator (16)；
Photoelectricity door trip (7) and synchronous control switch (15) are connected in parallel to circuit general switch (17)；3rd electric magnet (6) is opened with photogate
(7) series connection is closed, is connected on synchronous control switch (15) after the first electric magnet (4) and the second electric magnet (5) parallel connection.
2. demonstration instrument according to claim 1, wherein, the demonstration instrument also includes：
Base (1), is positioned on horizontal plane；
Support (12), support (12) are arranged on base (1), in order to support the 3rd track (11) and keep its level；Support
(12) abut against on poly (methyl methacrylate) plate (9)；
Receiving slit (13), is placed in front of base (1) clamping plate.
3. demonstration instrument according to claim 1, wherein, the demonstration instrument also includes：Peripheral hardware video recording instrument (18).
4. according to the arbitrary described demonstration instrument of claim 1-3, wherein, when plain ball passes through photoelectricity door trip (7), door
Interior light is blocked, and photoelectricity door trip (7) is disconnected.
5., according to the arbitrary described demonstration instrument of claim 1-3, wherein, synchronous control switch (15) is while control the first electromagnetism
The power-off and energization of ferrum (4) and the second electric magnet (5), it is ensured that the first electric magnet (4) and the second electric magnet (5) are while power-off, general
Logical steel ball can discharge simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620733174.3U CN206040005U (en) | 2016-07-11 | 2016-07-11 | Projectile motion demonstration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620733174.3U CN206040005U (en) | 2016-07-11 | 2016-07-11 | Projectile motion demonstration instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206040005U true CN206040005U (en) | 2017-03-22 |
Family
ID=58311465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620733174.3U Active CN206040005U (en) | 2016-07-11 | 2016-07-11 | Projectile motion demonstration instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206040005U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106960616A (en) * | 2017-05-15 | 2017-07-18 | 程祎琳 | A kind of physical throwing exercise testing presentation tool and application method |
| CN110827629A (en) * | 2019-10-23 | 2020-02-21 | 王春山 | Novel horizontal projectile motion demonstration instrument |
-
2016
- 2016-07-11 CN CN201620733174.3U patent/CN206040005U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106960616A (en) * | 2017-05-15 | 2017-07-18 | 程祎琳 | A kind of physical throwing exercise testing presentation tool and application method |
| CN110827629A (en) * | 2019-10-23 | 2020-02-21 | 王春山 | Novel horizontal projectile motion demonstration instrument |
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