CN101751812A - Multi-functional launch demonstration device - Google Patents
Multi-functional launch demonstration device Download PDFInfo
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- CN101751812A CN101751812A CN200810203648A CN200810203648A CN101751812A CN 101751812 A CN101751812 A CN 101751812A CN 200810203648 A CN200810203648 A CN 200810203648A CN 200810203648 A CN200810203648 A CN 200810203648A CN 101751812 A CN101751812 A CN 101751812A
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Abstract
The invention relates to a demonstration device, in particular to a multi-functional launch demonstration device. The device comprises a small glass ball (5), a catapult, a glass tube (4) and an iron ball (8), wherein the small glass ball (5) does throwing motion; the catapult is used for launching the small glass ball (5); the glass tube (4) is used for supporting the small glass ball (5); the iron ball (8) does free-fall motion; a ditch-type switch (6) is arranged at a right end port of the glass tube (4); the upper end of the iron ball (8) is provided with an electromagnet (7) which can make the iron ball fall through the on and off of the circuit; and when the small glass ball (5) rushes to the right end port of the glass tube (4) to block the infrared ray in a notch of the ditch-type switch (6), the closed circuit is interrupted, the iron ball (8) freely falls to realize that the small throwing glass ball (5) and the free-fall iron ball (8) fall at the same time. The multi-functional launch demonstration device has the advantages of clear light path, nimble and fast reaction of an experiment, clear collision sound and clear and intuitive motion trail.
Description
Technical field
The present invention relates to a kind of apparatus for demonstrating, particularly relate to a kind of multi-functional launch demonstration device.
Background technology
Middle school student's experiments out of class and little making at present is teaching research and a kind of new assay format that occurs of teaching in this year.Experiments out of class and little making can make the student verify a plurality of rules very clearly, can connect colourful physical world in the knowledge of study within the class period and the daily life, and the opportunity of observation of nature, exploration world profoundness is provided.Center of effort is to cultivate student's creativity consciousness, and self-contrived experiment and the ability of starting to make equipment are understood getting in touch of physics and other subject, strengthen the connection between theory and practice, help secondary school education and transform to quality-oriented education from exam-oriented education.In the experiment, lack corresponding apparatus for demonstrating when being this law of the movement of falling object outside class about the component on the vertical direction in the checking level throw motion.Conventional device is slow in reacting, and the track that collision takes place is fuzzy, cannot well allow the student capture, and experiment effect is poor.
Summary of the invention
The technical matters that the present invention solves provides a kind ofly makes alignment clamp with laser pointer, and light path is clear; Experiment is quick on the draw, rapidly; The collision multi-functional launch demonstration device that sounding is clear and melodious and movement locus is simple and clear.
For solving the problems of the technologies described above, multi-functional launch demonstration device of the present invention, comprise the glass pellet 5 of doing level throw motion, the catapult-launching gear that launches this glass pellet 5, hold in the palm glass tube 4 that carries this glass pellet 5 and the iron ball 8 of doing freely falling body, it is characterized in that: be provided with a ditch type switch 6 in the right-hand member port of described glass tube 4, be provided with the electromagnet 7 that a connecting and disconnecting of the circuit makes iron ball 8 landing in the upper end of described iron ball 8, described ditch type switch 6 is electrically connected with electromagnet 7; Described catapult-launching gear comprises glass tube 4, spring 3, backguy 2 and laser pointer 1, being drilled with always at the left end center of described glass tube 4, the footpath is the aperture of 0.2cm, backguy 2 penetrates from the hole and is connected with the right-hand member of spring 3, described laser pointer 1, glass pellet 5 and iron ball 8 present sight alignment; Described ditch type switch 6 comprises illuminator and light-receiving device, and this illuminator and light-receiving device all are contained in the detection head, and the test side has a groove, illuminator and light-receiving device be contained in respectively the top of groove and below; The used light source of the illuminator of described ditch type switch 6 is an infrared ray; Described ditch type switch 6 has optical system, illuminator, light-receiving device, amplifier, photoelectricity modulation and the output circuit that opens the light.
Compared with prior art, advantage of the present invention is: light path is clear; Experiment is quick on the draw, rapidly; The collision sounding is clear and melodious and movement locus is simple and clear.The affable manual manipulation of student, experiment effect is better.
Description of drawings
Below in conjunction with accompanying drawing the present invention is described in further detail:
Fig. 1 is the structural representation of multi-functional launch demonstration device of the present invention;
Fig. 2 is the circuit diagram of the ditch type switch of multi-functional launch demonstration device of the present invention;
Fig. 3 is the structural representation of the ditch type switch of multi-functional launch demonstration device of the present invention;
Fig. 4 is the lecture experiment figure of multi-functional launch demonstration device of the present invention.
Among the figure: 1, laser pointer, 2, backguy, 3, spring, 4, glass tube, 5, glass pellet, 6, ditch type switch, 7, electromagnet, 8, iron ball.
Embodiment
As shown in Figure 1, be about the aperture of 0.2cm at left end centre drill one diameter of glass tube 4, backguy 2 penetrates from the hole and is connected with the right-hand member of spring 3, at the right-hand member mounting groove type switch 6 control electromagnet of glass tube 4.Allow laser pass through laser pointer 1, glass pellet 5 aiming iron balls 8 during use, present sight alignment.Pull at backguy 2, spring 3 is compressed, and discharges backguy 2, and spring 3 extends rapidly, and bead 5 is ejected.When bead 5 is flushed to the right-hand member port of glass tube 4, block the infrared ray in ditch type switch 6 notches, closed circuit interrupts, and iron ball 8 free-falling has immediately realized that flat throwing glass pellet 5 and freely falling body iron ball 8 fall simultaneously.
As Fig. 2, shown in Figure 3, ditch type optoelectronic switch 6 inner structures are as follows: illuminator and light-receiving device all are contained in the detection head, and the test side has a groove, illuminator and light-receiving device just be contained in respectively the top of groove and below.Used light source has two kinds of infrared ray and visible lights, and this device is used infrared ray.Testee in groove when stopping light, the optoelectronic switch action.Optical system, illuminator, light-receiving device, amplifier, photoelectricity modulation and the output circuit that opens the light are arranged in the optoelectronic switch.Be output as 4 line formulas.Bright logical or help secretly, Chang Kai or normally closed free according to explanation by the deviser, can be 100mA for load current, the frequency of opening the light is 100HZ, sensitivity is adjustable and working stability is reliable, and is easy to use.By connection external circuit shown in Figure 2, power supply connects blue two lines of palm fibre, electromagnet connect dark brown between, should be bright logical this moment, work of electromagnet holds iron ball.Should carry out sensitivity adjusting at the scene after installing, switch refers to work down at best operating valve when making glass bead block infrared ray, guarantees that the switch working stability is reliable.
The object while falling bodies of freely falling body and level throw motion are made in demonstration at sustained height.Make electromagnet stent other during experiment, regulate two ball positions, make the centre of sphere identical apart from floor level near the spring gun outlet.Hear the clash that two balls land simultaneously after launching.Change amount of spring compression, the glass bead initial velocity of ejaculation is increased, repeatedly experimental result is identical; This shows that the level throw motion in the vertical direction does the movement of falling object, and the horizontal direction velocity magnitude does not influence the motion of flat paraboloid in the vertical direction.
Demonstrating level throw shooting object allows target fall from static the beginning when bullet goes out muzzle; This is still an object and does level throw motion, and an object is simultaneously in the free-falling of equal height place.As long as the bullet aiming target, before two beads landed aloft certain point collide, can get the intersection point that they must arrive two tracks simultaneously according to the synthetic of motion with decomposing, collision takes place at this intersection point place.This explanation distance that they descend in equal time is identical, and the bead height of drop is not because motion and any change on the horizontal direction.
As shown in Figure 4: demonstration shooting object and surface level have angle, the shooting of aiming iron ball, be easy to prove that in first quartile experiment they also must collide, and shoot with unfailing accuracy the independent action principle of the rationale that can excite the student to seek to collide---power (the independent action principle of checking power).
Claims (5)
1. multi-functional launch demonstration device, comprise the glass pellet (5) of doing level throw motion, the catapult-launching gear that launches this glass pellet (5), hold in the palm glass tube (4) that carries this glass pellet (5) and the iron ball (8) of doing freely falling body, it is characterized in that: be provided with a ditch type switch (6) in the right-hand member port of described glass tube (4), be provided with the electromagnet (7) that a connecting and disconnecting of the circuit makes iron ball (8) landing in the upper end of described iron ball (8), described ditch type switch (6) is electrically connected with electromagnet (7).
2. according to the described multi-functional launch demonstration device of claim 1, it is characterized in that: described catapult-launching gear comprises glass tube (4), spring (3), backguy (2) and laser pointer (1), being drilled with always at the left end center of described glass tube (4), the footpath is the aperture of 0.2cm, backguy (2) penetrates from the hole and is connected with the right-hand member of spring (3), described laser pointer (1), glass pellet (5) and iron ball (8) present sight alignment.
3. according to the described multi-functional launch demonstration device of claim 1, it is characterized in that: described ditch type switch (6) comprises illuminator and light-receiving device, this illuminator and light-receiving device all are contained in the detection head, and the test side has a groove, illuminator and light-receiving device be contained in respectively the top of groove and below.
4. according to the described multi-functional launch demonstration device of claim 3, it is characterized in that: the used light source of the illuminator of described ditch type switch (6) is an infrared ray.
5. according to the described multi-functional launch demonstration device of claim 1, it is characterized in that: described ditch type switch (6) has optical system, illuminator, amplifier, photoelectricity modulation and the output circuit that opens the light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810203648A CN101751812A (en) | 2008-11-28 | 2008-11-28 | Multi-functional launch demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810203648A CN101751812A (en) | 2008-11-28 | 2008-11-28 | Multi-functional launch demonstration device |
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| CN101751812A true CN101751812A (en) | 2010-06-23 |
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| CN200810203648A Pending CN101751812A (en) | 2008-11-28 | 2008-11-28 | Multi-functional launch demonstration device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102842256A (en) * | 2012-09-14 | 2012-12-26 | 江苏苏威尔科技有限公司 | Projectile motion tester |
| CN103285602A (en) * | 2013-06-20 | 2013-09-11 | 四川大学 | Toy for demonstrating water collision |
| CN104077941A (en) * | 2014-06-25 | 2014-10-01 | 南宁市第二中学 | Horizontal cast motion demonstrator |
| CN105528942A (en) * | 2016-01-27 | 2016-04-27 | 浙江大学城市学院 | Motion pattern research experimental instrument for horizontal projectile steel ball |
| CN105894914A (en) * | 2016-06-28 | 2016-08-24 | 赵忠华 | High school physics horizontal projectile motion demonstrating device |
| CN106683540A (en) * | 2016-12-15 | 2017-05-17 | 昆明理工大学 | Motion synthesis physical experiment demonstrating instrument |
| CN106898203A (en) * | 2017-04-28 | 2017-06-27 | 李佳霖 | Projectile motion experiment instrument and experiment instrument system |
| CN108198490A (en) * | 2017-12-29 | 2018-06-22 | 佛山杰致信息科技有限公司 | It is a kind of tiltedly to throw and movement of falling object contrast teaching instrument |
| CN109087564A (en) * | 2018-10-16 | 2018-12-25 | 胡玥瑶 | A kind of physical throwing motion verification experimental provision |
| CN114487351A (en) * | 2022-02-07 | 2022-05-13 | 湖南生物机电职业技术学院 | Transgenic rice soil farmland soil fertility monitoring balance system and equipment thereof |
-
2008
- 2008-11-28 CN CN200810203648A patent/CN101751812A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102842256A (en) * | 2012-09-14 | 2012-12-26 | 江苏苏威尔科技有限公司 | Projectile motion tester |
| CN103285602A (en) * | 2013-06-20 | 2013-09-11 | 四川大学 | Toy for demonstrating water collision |
| CN104077941A (en) * | 2014-06-25 | 2014-10-01 | 南宁市第二中学 | Horizontal cast motion demonstrator |
| CN105528942A (en) * | 2016-01-27 | 2016-04-27 | 浙江大学城市学院 | Motion pattern research experimental instrument for horizontal projectile steel ball |
| CN105894914A (en) * | 2016-06-28 | 2016-08-24 | 赵忠华 | High school physics horizontal projectile motion demonstrating device |
| CN106683540A (en) * | 2016-12-15 | 2017-05-17 | 昆明理工大学 | Motion synthesis physical experiment demonstrating instrument |
| CN106898203A (en) * | 2017-04-28 | 2017-06-27 | 李佳霖 | Projectile motion experiment instrument and experiment instrument system |
| CN106898203B (en) * | 2017-04-28 | 2019-04-12 | 李佳霖 | Projectile motion experiment instrument and experiment instrument system |
| CN108198490A (en) * | 2017-12-29 | 2018-06-22 | 佛山杰致信息科技有限公司 | It is a kind of tiltedly to throw and movement of falling object contrast teaching instrument |
| CN109087564A (en) * | 2018-10-16 | 2018-12-25 | 胡玥瑶 | A kind of physical throwing motion verification experimental provision |
| CN114487351A (en) * | 2022-02-07 | 2022-05-13 | 湖南生物机电职业技术学院 | Transgenic rice soil farmland soil fertility monitoring balance system and equipment thereof |
| CN114487351B (en) * | 2022-02-07 | 2023-10-24 | 湖南生物机电职业技术学院 | Transgenic rice soil cultivated land force monitoring and balancing system and equipment thereof |
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Open date: 20100623 |