CN108447355A - Multifunctional inertia law demonstrator - Google Patents
Multifunctional inertia law demonstrator Download PDFInfo
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- CN108447355A CN108447355A CN201810246104.9A CN201810246104A CN108447355A CN 108447355 A CN108447355 A CN 108447355A CN 201810246104 A CN201810246104 A CN 201810246104A CN 108447355 A CN108447355 A CN 108447355A
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- inertia
- shot trolley
- trolley
- direct current
- shot
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/08—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics
- G09B23/10—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics of solid bodies
Abstract
The invention discloses a kind of multifunctional inertia law demonstrators, the demonstrator is based on the substrate being horizontally mounted, it is designed with the adjustable reciprocating linear haulage gear of hauling speed, shot trolley, moving object inertia tests mechanism, resting inertia tests mechanism, liquid inertia tests mechanism, it includes electromagnetic launch device that moving object inertia, which tests mechanism, plastic cup and baton round, it includes metal ball position-limited box that resting inertia, which tests mechanism, metal ball, sand loading box, sand loading box supporting table, it includes dress water box that liquid inertia, which tests mechanism, the demonstrator overcomes the defect of law of inertia apparatus for demonstrating in the prior art, movement/static object, which can be demonstrated, inertia, liquid, which can be demonstrated, has inertia, entire presentation process is more intuitive.
Description
Technical field
The present invention relates to a kind of physics facilities, specifically, being to be related to a kind of multifunctional inertia law demonstrator.
Background technology
In physics facility, especially demonstrates in the experimental provision used in the law of inertia, it is fixed often to demonstrate inertia
Rule i.e. the newton first law of motion.It is known that the newton first law of motion, the abbreviation forst law of motion.It is also known as used
Property law, inertia law.Common complete expression：Any object will remain a constant speed linear motion or stationary state, until outer
Until power forces it to change motion state.Shandong religion version high school physics textbook in statement be：The forst law of motion shows outer when closing
When power is zero, originally static object will continue remains stationary state, and the object moved originally will then continue with original speed
Do linear uniform motion.It includes two kinds of situations that bonding force, which is zero,：All external force being subject to one is object are cancelled out each other, bonding force
It is zero；Another kind is that object is not acted on by external force.Some experts and scholars think that this form of presentation is not rigorous, so usually
Using original statement.Galileo thinks the inference of smooth bevel, in reality, when a ball rolls downwards along inclined-plane, and its speed
When spending and increase, and scrolling up, its speed reduces.Thus Galileo inference, when ball rolls along the horizontal plane, its speed should not
Increasing does not subtract.Actually he has found that ball is more and more slow, finally stops.Galileo thinks that this is not its " nature ",
But due to the reason of frictional resistance, because he is equally also observed, surface is more smooth, and ball will roll remoter.Then he pushes away
By if without frictional resistance, ball will roll down forever.
Galilean ideal slope experiment is to allow bead lower rolling since stationary state along a smooth bevel, bead will
Another inclined-plane is rolled on, is reached and the then lower rolling again of original much the same height.His inference, for no other reason than that frictional force, ball does not just have
Original height can be reached.Then, he reduces the inclination angle on latter inclined-plane, and bead still reaches sustained height on this inclined-plane, but
At this moment it will roll far.Continue the inclination angle on second inclined-plane of reduction, ball, which reaches sustained height, will roll farther.Then he is right
The case where when inclined-plane is kept flat, is studied, and conclusion, which is clearly ball, to be rolled down forever.This is to say, power is not the fortune for maintaining object
The reason of dynamic speed for maintaining object, and exactly change the reason of object moving state changes object speed.Therefore, one
There is denier object a certain speed will just be moved down with this speed uniform rectilinear if it does not stress.1687, newton
On the basis of Descartes, Galileo et al. work, write《Philosophiae naturalis principia mathematica》, the constraint of outdated ideas is broken away from,
The law of inertia is formally contemplated as First Principle：All objects always keep linear uniform motion state or stationary state, remove
Until the non-active external force on it forces it to change this state.He proposes the linear motion state and static of remaining a constant speed
State is the viewpoint of the build-in attribute of object, and the inertial reference system therefrom obtained concept.
There are many experimental provision of the demonstration law of inertia at present, but without dedicated forst law of motion demonstrator, are imparting knowledge to students
When majority teacher gather materials on the spot and carry out the simple demonstration of Galilean ideal slope experiment.204480551 U's of Patent No. CN
Forst law of motion demonstrator utility model patent is then to utilize the identical track of three structures, track both ends difference between high and low identical
Stage body demonstrate the forst law of motion, if the different material of friction coefficient is spread so in the horizontal rail part of three tracks
What the bead rolled down from track rolled in horizontal rail can be different apart from length, and the distance of the smaller rolling of friction coefficient is got over
It is long, it is possible thereby to which inference obtains if thus the very smooth so small club of horizontal rail, which rolls down always, show that newton first is fixed
The conclusion of rule.The forst law of motion demonstrator utility model patent of 2713566 Y of Patent No. CN and former patent formula
It is similar, only use trolley instead of bead, being in addition exactly the height of trolley downslide can be adjusted.But since friction is deposited always
Even if bead or the trolley trolley on very smooth horizontal plane are also impossible to move down always, so student is to inertia
The understanding of law, which still exists, feels uncertain.In order to solve these problems, people are seeking always a kind of ideal technical solution.
The technological means that the law of inertia demonstrator of Patent No. CN 106935108A is taken is to leak a bead along taper
Bucket is fallen into the vertical cylinder of organic glass equipped with liquid, and bead accelerated before this after falling into liquid, was fallen on when under bead
Resultant force of the bead suffered by vertical direction is zero when certain speed, and bead moves in a liquid, becomes linear uniform motion, this
Vertical and straight movement state downward in liquid in pipe Shi little Qiu can regard perfect condition as, if measuring bead in vertical direction
Bead falls in upper arbitrary equidistance time is equal just to think that bead does linear uniform motion, if not small by outer force effect
Ball will move down always.Although this forst law of motion demonstrator can carry out the law of inertia idealization demonstration, learn
The object of raw often imperceptible movement has inertia, and in addition its demo function is single, and the object that can only demonstrate movement has inertia
Static object, which cannot be demonstrated, inertia, and can not demonstrate liquid has inertia.
Invention content
The purpose of the present invention is that solve the above-mentioned problems and provides a kind of multifunctional inertia law demonstrator.
The present invention is achieved through the following technical solutions above-mentioned purpose：
A kind of multifunctional inertia law demonstrator, including：
The substrate being horizontally mounted；
The adjustable reciprocating linear haulage gear of hauling speed, the reciprocating linear haulage gear are arranged in left-right direction；
Shot trolley, the shot trolley arrange in left-right direction, a left side for left end and the reciprocating linear haulage gear
It is connected to traction end, right end is connect with the dextrad traction end of the reciprocating linear haulage gear；
Moving object inertia positioned at the shot trolley interposition tests mechanism comprising electromagnetic launch device, plastic cup
And baton round, there are two the electromagnetic launch devices and is installed in the shot trolley, the bullet of two electromagnetic launch devices
Penetrate end straight up；There are two the plastic cups and is fixedly mounted in the shot trolley, and the plastic cup is funnel
The ejection end of shape structure, two electromagnetic launch devices extends to from the bottom to top respectively at the base opening of two plastic cups；Institute
It states there are two baton rounds, and is respectively placed in two plastic cups, and be respectively supported at two electromagnetic launch devices
Launch end；
Resting inertia on the left of the shot trolley tests mechanism comprising is fixed on the shot trolley left end
Metal ball position-limited box, be placed in the metal ball position-limited box metal ball, the sand loading box equipped with sand, be mounted on the substrate
On sand loading box supporting table, the top surface and left side of the metal ball position-limited box lack, and left missing face is provided with detachably
Metal ball limiting plate, the top surface missing of the sand loading box, the vertical projection of the metal ball position-limited box is located at the sand loading box
Interior, the sand loading box is fixed in the sand loading box supporting table；
Liquid inertia on the right side of the shot trolley tests mechanism comprising the dress water for filling water and top surface missing
Box, the dress water box are fixedly connected on the right end of the shot trolley, inside the dress sinks of left and right two are divided by partition board.
As this patent selection a kind of technical solution, the reciprocating linear haulage gear include lead screw guide rail, traction rope,
Pulley mechanism and the controllable direct current generator of rotating speed；
The pulley mechanism and the direct current generator are separately mounted to the left and right ends of the substrate top surface, the direct current
Machine arranges that the pulley mechanism includes pulley bracket and the fixed pulley on the pulley bracket along the longitudinal direction；
The lead screw guide rail arranges and in left-right direction between the pulley mechanism and the direct current generator, the bullet
The traveling wheel for penetrating trolley is supported on the lead screw guide rail and can move in left-right direction；
The traction rope is wrapped in the shaft of the direct current generator, and one end is as the reciprocating linear haulage gear
Dextrad traction end is simultaneously connect with the right end of the shot trolley, and the other end is led as the left-hand of the reciprocating linear haulage gear
Draw end, and is connect with the left end of the shot trolley after bypassing the fixed pulley of the pulley mechanism.
As a kind of technical solution of this patent selection, the anchor ring of the shot trolley traveling wheel is provided with support card in institute
State the groove on lead screw guide rail.
As a kind of technical solution of this patent selection, rotating forward switch, reversal switch, power supply are installed on the substrate and opened
It closes and speed-regulating potentiometer, it is described to rotate forward switch and the reversal switch is respectively used to control the rotating forward of the direct current generator and anti-
Turn, the power switch is used to control the on/off of the on/off and the direct current generator of the electromagnetic launch device, institute
State rotating speed of the speed-regulating potentiometer for controlling the direct current generator.
As a kind of technical solution of this patent selection, the electromagnetic launch device includes electromagnetism brandreth, mounted on described
Electromagnetic coil in electromagnetism brandreth, rod-shaped pole core, the peace for from top to bottom passing through the electromagnetic coil and the electromagnetism brandreth
Longitudinal spacing guide cylinder at the plastic cup base opening is placed in the longitudinal spacing guide cylinder and is sleeved on the magnet iron
The compressed spring of core upper end, the DC power supply for providing power supply for the electromagnetic coil break for controlling the electromagnetic coil
The upper end of the Hall magnetic switch of switch power supply, the pole core is fixedly installed spring clamp plate, and the compressed spring is compressed in
Between the spring clamp plate and the electromagnetism brandreth.
As a kind of technical solution of this patent selection, there are two Hall sensor and two for the Hall magnetic switch configuration
The front and rear sides of a magnet, the shot trolley are arranged with a Hall sensor and the magnet, two institutes
The front and rear sides wall that Hall sensor is separately fixed at the shot trolley is stated, two magnet are each attached to the substrate
On, the Hall sensor is corresponded with the magnet.
As a kind of technical solution of this patent selection, the sand loading box supporting table is inverted U-shaped board structure, with institute
It states and is fixed by detachable connection structure between substrate.
It is to be connected by bolt as a kind of technical solution of this patent selection, between the dress water box and the shot trolley
The Demountable connect is reinforced between cassette bottom and the shot trolley by triangle link of boards.
As a kind of technical solution of this patent selection, the top surface of the substrate is equipped with level meter.
Compared with prior art, the invention has the advantages that：
The law of inertia demonstrator is a kind of multifunctional inertia law demonstrator, based on the substrate being horizontally mounted,
It is real to be designed with the adjustable reciprocating linear haulage gear of hauling speed, shot trolley, moving object inertia experiment mechanism, resting inertia
Mechanism, liquid inertia experiment mechanism are tested, moving object inertia experiment mechanism includes electromagnetic launch device, plastic cup and baton round, quiet
Only object inertia experiment mechanism includes metal ball position-limited box, metal ball, sand loading box, sand loading box supporting table, and liquid inertia tests mechanism
Including filling water box, which overcomes the defect of law of inertia apparatus for demonstrating in the prior art, can demonstrate movement/static
Object has inertia, and can demonstrate liquid has inertia, entire presentation process more intuitive.
Description of the drawings
Fig. 1 is the structural schematic diagram of multifunctional inertia law demonstrator of the present invention；
Fig. 2 is the mounting structure schematic diagram of electromagnetic launch device of the present invention；
In above-mentioned attached drawing, the corresponding component names of reference numeral are as follows：
1- substrates, 2- pulley mechanisms, 3- traction ropes, 4- lead screw guide rails, 5- direct current generators, 6- shot trolleys, 7- are just turned on
It closes, 8- reversal switches, 9- power switches, 10- speed-regulating potentiometers, 11- plastic cups, 12- baton rounds, 13- Hall sensors, 14-
Magnet, 15- electromagnetism brandreths, 16- electromagnetic coils, 17- pole cores, 18- longitudinal spacing guide cylinders, 19- compressed springs, 20- are straight
Galvanic electricity source, 21- Hall magnetic switch, 22- metal ball position-limited box, 23- metal balls, 24- sand loading boxes, 25- sand loading box supporting tables,
26- fills water box, 27- partition boards.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings：
In conjunction with shown in Fig. 1 and Fig. 2, the present invention includes with lower structure：
The substrate 1 being horizontally mounted；
The adjustable reciprocating linear haulage gear of hauling speed, reciprocating linear haulage gear are arranged in left-right direction；
Shot trolley 6, shot trolley 6 arrange that the left-hand of left end and reciprocating linear haulage gear is drawn in left-right direction
End connection, right end are connect with the dextrad traction end of reciprocating linear haulage gear；
Moving object inertia positioned at 6 interposition of shot trolley tests mechanism comprising electromagnetic launch device, 11 and of plastic cup
Baton round 12, there are two electromagnetic launch devices and is installed in shot trolley 6, and the ejection end of two electromagnetic launch devices is perpendicular
It is straight upward；There are two plastic cups 11 and is fixedly mounted in shot trolley 6, and plastic cup 11 is funnel-shaped structure, two electromagnetism
The ejection end of catapult-launching gear extends to from the bottom to top respectively at the base opening of two plastic cups 11；There are two baton rounds 12, and sets respectively
In in two plastic cups 11, and it is respectively supported at the ejection end of two electromagnetic launch devices；
Resting inertia positioned at 6 left side of shot trolley tests mechanism comprising is fixed on the metal of 6 left end of shot trolley
Ball position-limited box 22, the sand loading box 24 equipped with sand, is installed on substrate 1 the metal ball 23 being placed in metal ball position-limited box 22
Sand loading box supporting table 25, the top surface and left side of metal ball position-limited box 22 lack, and left missing face is provided with dismountable gold
Belong to 23 limiting plate of ball, the top surface missing of sand loading box 24, the vertical projection of metal ball position-limited box 22 is located in sand loading box 24, sand loading box
24 are fixed in sand loading box supporting table 25；
Liquid inertia positioned at 6 right side of shot trolley tests mechanism comprising the dress water box for filling water and top surface missing
26, dress water box 26 are fixedly connected on the right end of shot trolley 6, inside the dress sinks of left and right two are divided by partition board 27.
As a kind of technical solution of this patent selection, reciprocating linear haulage gear includes lead screw guide rail 4, traction rope 3, slides
Take turns mechanism 2 and the controllable direct current generator 5 of rotating speed；
Pulley mechanism 2 and direct current generator 5 are separately mounted to the left and right ends of 1 top surface of substrate, and direct current generator 5 is along the longitudinal direction
Arrangement, pulley mechanism 2 include pulley bracket and the fixed pulley on pulley bracket；
Lead screw guide rail 4 arranges and in left-right direction between pulley mechanism 2 and direct current generator 5, the walking of shot trolley 6
Wheel is supported on lead screw guide rail 4 and can move in left-right direction；
Traction rope 3 is wrapped in the shaft of direct current generator 5, dextrad traction end of the one end as reciprocating linear haulage gear
And connect with the right end of shot trolley 6, left-hand traction end of the other end as reciprocating linear haulage gear, and bypass turbine
It is connect with the left end of shot trolley 6 after the fixed pulley of structure 2.
As a kind of technical solution of this patent selection, the anchor ring of 6 traveling wheel of shot trolley is provided with support card in lead screw
Groove on guide rail 4, to improve stability of the shot trolley 6 on lead screw guide rail 4.
As a kind of technical solution of this patent selection, rotating forward switch 7, reversal switch 8, power supply are installed on substrate 1 and opened
9 and speed-regulating potentiometer 10 are closed, switch 7 is rotated forward and reversal switch 8 is respectively used to rotating and reverse for control direct current generator 5, power supply
Switch 9 is used to control the on/off of the on/off and direct current generator 5 of electromagnetic launch device, and speed-regulating potentiometer 10 is for controlling
The rotating speed of direct current generator 5.
As a kind of technical solution of this patent selection, electromagnetic launch device includes electromagnetism brandreth 15, is mounted on electromagnet
Electromagnetic coil 16 in frame 15 from top to bottom passes through the rod-shaped pole core 17 of electromagnetic coil 16 and electromagnetism brandreth 15, is mounted on
Longitudinal spacing guide cylinder 18 at 11 base opening of plastic cup is placed in longitudinal spacing guide cylinder 18 and is sleeved on 17 upper end of pole core
Compressed spring 19, the DC power supply 20 for providing power supply for electromagnetic coil 16, for controlling 16 deenergization of electromagnetic coil
The upper end of Hall magnetic switch 21, pole core 17 is fixedly installed spring clamp plate, and compressed spring 19 is compressed in the Spring Card
Between plate and electromagnetism brandreth 15.
As a kind of technical solution of this patent selection, there are two Hall sensors 13 and two for the configuration of Hall magnetic switch 21
The front and rear sides of a magnet 14, shot trolley 6 are arranged with a Hall sensor 13 and a magnet 14, two hall sensings
Device 13 is separately fixed at the front and rear sides wall of shot trolley 6, and two magnet 14 are each attached on substrate 1, Hall sensor 13 with
Magnet 14 corresponds.
As a kind of technical solution of this patent selection, sand loading box supporting table 25 is inverted U-shaped board structure, with substrate
It is fixed by detachable connection structure between 1, when mounted, between sand loading box supporting table 25 and traction rope 3 and lead screw guide rail 4
It does not contact, in order to avoid influence the operation of shot trolley 6.
As a kind of technical solution of this patent selection, fills and be bolted between water box 26 and shot trolley 6
Demountable is reinforced between cassette bottom and shot trolley 6 by triangle link of boards, ensure that the structure of dress water box 26 is steady
It is qualitative.
As a kind of technical solution of this patent selection, the top surface of the substrate 1 is equipped with level meter, for detecting substrate
Whether 1 is horizontal, as tilted, should first be adjusted.
Working principle of the present invention is as follows：
The linear guide of the lead screw guide rail 4 as elastic trolley is used in this patent, first, when ensureing that trolley travels forward
Wheel is non-slip, second is that ensureing there is sufficiently large frictional force in docking process, quick parking is realized conducive to shot trolley 6；Bullet
It is to drive the dragging ejection of traction rope 3 small by the positive and negative rotation of direct current generator 5 to penetrate the moving left and right on lead screw guide rail 4 of trolley 6
Vehicle 6 or so moves along a straight line, and movement velocity controlled by speed-regulating potentiometer 10, can control it to move with uniform velocity, accelerate or
Person's retarded motion.
There is inertial time in the object of demonstration movement, so that the electromagnetic coil 16 of electromagnetic launch device is powered first, magnet iron
Core 17 under the magnetic force compresses compressed spring 19, and baton round 12 is in 11 bottom of plastic cup, starts direct current generator 5, makes
Shot trolley 6 moves to left end or right end and then stops, and regulates and allows after speed-regulating potentiometer 10 shot trolley 6 from Far Left
Or rightmost starts to make uniform motion with certain speed, when the Hall sensor 13 in shot trolley 6 moves to 14 institute of magnet
Position when, Hall magnetic switch 21 trigger work, cut off electromagnetic coil 16 power supply, the magnetic force of pole core 17 after power-off
Disappear, pole core 17 under the action of compressed spring 19 by the 12 high high bounce of baton round in plastic cup 11, it is vertical at this time
The baton round 12 bounced due to not stressing in the horizontal direction, so it will keep original linear uniform motion state, i.e., in water
It square continues up and to do linear uniform motion, can be fallen in plastic cup 11 again by baton round 12 after a certain period of time, such as allow motor
Reversion also observes that same experimental phenomena, changes the rotating speed of direct current generator 5 by speed-regulating potentiometer 10, and shot trolley 6 is done
The speed of uniform motion will also change, although the speed that trolley makes linear uniform motion is changed, be bounced vertically
Baton round 12 condition of the law of inertia is still met since horizontal direction does not stress, baton round 12 still can drop back into original modeling
In material cup 11；
If shot trolley 6 moves near 14 position of magnet on substrate 1, and shot trolley 6 is allowed to accelerate or subtract suddenly
Speed, at this time baton round 12 can be acted in the horizontal direction by power, no longer meet the condition of the law of inertia, then by popping up vertically
Baton round 12 will cannot drop back into original plastic cup 11, if shot trolley 6 accelerates at this time, the baton round 12 that is projected out
It can drop to behind shot trolley 6, if trolley slows down, the baton round 12 of pop-up can fall on 6 front of shot trolley, so launching
The baton round 12 that trolley 6 accelerates and popped up when slowing down cannot all drop back into original plastic cup 11；
Baton round 12 is launched away if it is when shot trolley 6 is static, baton round 12 is in the horizontal direction still
Meet the condition of the law of inertia, horizontal direction is in static before baton round 12 launches, and 12 horizontal direction of baton round is still after ejection
In static, so the baton round 12 of pop-up still can drop back into original plastic cup 11.
There is inertial time demonstrating static object, may be selected to make the electromagnetic coil 16 of electromagnetic launch device to be powered always,
The magnet 14 on substrate 1 is blocked, prevents Hall magnetic switch 21 from working, baton round 12 is avoided to be bounced；
23 limiting plate of metal ball in the left side of metal ball position-limited box 22 is removed, metal ball 23 keep not with metal ball position-limited box
22 madial wall contact, started suddenly with larger speed by be allowed shot trolley 6, can observe that shot trolley 6 moves from this time
, but metal ball 23 can fall into and be equipped in the sand loading box 24 of sand below, i.e., and shot trolley 6 is left rear metal ball 23 and is still protected
Hold that horizontal direction is stationary to be fallen in the underface of its initial position, to which the object for demonstrating static has inertia.
There is inertial time in demonstration liquid, be packed into pigment water in one of dress water box 26 dress sink, another dress
Sink does not fill, and shot trolley 6 is allowed to be moved suddenly to the side of dress water, then pigment water can climb over partition board 27 to another sky dress water
Slot moves；, whereas if during shot trolley 6 moves, it wherein is packed into pigment water in the preceding dress sink of the direction of motion, after
Dress sink does not fill, and shot trolley 6 is allowed to stop suddenly, is moved into former empty dress sink then pigment water can also climb over partition board 27, this
Sample, which just demonstrates liquid, also inertia.
According to the above embodiment, the present invention can be realized well.It is worth noting that based on said structure design
Under the premise of, to solve same technical problem, even if some made in the present invention are adopted without substantive change or polishing
The essence of technical solution is still as the present invention, therefore it should also be as within the scope of the present invention.
Claims (9)
1. a kind of multifunctional inertia law demonstrator, which is characterized in that including：
The substrate being horizontally mounted；
The adjustable reciprocating linear haulage gear of hauling speed, the reciprocating linear haulage gear are arranged in left-right direction；
Shot trolley, the shot trolley arrange that the left-hand of left end and the reciprocating linear haulage gear is led in left-right direction
Draw end connection, right end is connect with the dextrad traction end of the reciprocating linear haulage gear；
Moving object inertia positioned at the shot trolley interposition tests mechanism comprising electromagnetic launch device, plastic cup and modeling
Pellet, there are two the electromagnetic launch devices and is installed in the shot trolley, the ejection end of two electromagnetic launch devices
Straight up；There are two the plastic cups and is fixedly mounted in the shot trolley, and the plastic cup is funnel-form knot
The ejection end of structure, two electromagnetic launch devices extends to from the bottom to top respectively at the base opening of two plastic cups；The modeling
There are two pellets, and is respectively placed in two plastic cups, and is respectively supported at the ejection of two electromagnetic launch devices
End；
Resting inertia on the left of the shot trolley tests mechanism comprising is fixed on the gold of the shot trolley left end
Belong to ball position-limited box, the metal ball being placed in the metal ball position-limited box, the sand loading box equipped with sand, install on the substrate
Sand loading box supporting table, the top surface and left side of the metal ball position-limited box lack, and left missing face is provided with dismountable gold
Belong to ball limiting plate, the top surface missing of the sand loading box, the vertical projection of the metal ball position-limited box is located in the sand loading box, institute
Sand loading box is stated to be fixed in the sand loading box supporting table；
Liquid inertia on the right side of the shot trolley tests mechanism comprising the dress water box for filling water and top surface missing,
The dress water box are fixedly connected on the right end of the shot trolley, inside the dress sinks of left and right two are divided by partition board.
2. multifunctional inertia law demonstrator according to claim 1, which is characterized in that the reciprocating linear haulage gear
Including lead screw guide rail, traction rope, pulley mechanism and the controllable direct current generator of rotating speed；
The pulley mechanism and the direct current generator are separately mounted to the left and right ends of the substrate top surface, the direct current generator edge
Front-rear direction arranges that the pulley mechanism includes pulley bracket and the fixed pulley on the pulley bracket；
The lead screw guide rail arranges and in left-right direction between the pulley mechanism and the direct current generator, and the ejection is small
The traveling wheel of vehicle is supported on the lead screw guide rail and can move in left-right direction；
The traction rope is wrapped in the shaft of the direct current generator, dextrad of the one end as the reciprocating linear haulage gear
Traction end is simultaneously connect with the right end of the shot trolley, and the other end is drawn as the left-hand of the reciprocating linear haulage gear
End, and connect with the left end of the shot trolley after bypassing the fixed pulley of the pulley mechanism.
3. multifunctional inertia law demonstrator according to claim 2, which is characterized in that the shot trolley traveling wheel
Anchor ring is provided with groove of the support card on the lead screw guide rail.
4. multifunctional inertia law demonstrator according to claim 2, which is characterized in that be equipped with rotating forward on the substrate
Switch, reversal switch, power switch and speed-regulating potentiometer, the rotating forward switch and the reversal switch are respectively used to described in control
Direct current generator rotates and reverse, and the power switch is for controlling the on/off of the electromagnetic launch device and the direct current
The on/off of motor, the speed-regulating potentiometer are used to control the rotating speed of the direct current generator.
5. multifunctional inertia law demonstrator according to claim 1, which is characterized in that the electromagnetic launch device includes
Electromagnetism brandreth, from top to bottom passes through the electromagnetic coil and the electromagnet at the electromagnetic coil in the electromagnetism brandreth
The rod-shaped pole core of frame, the longitudinal spacing guide cylinder at the plastic cup base opening are placed in the longitudinal spacing guiding
In cylinder and it is sleeved on the compressed spring of the pole core upper end, the DC power supply for providing power supply for the electromagnetic coil, uses
In the Hall magnetic switch for controlling the electromagnetic coil deenergization, the upper end of the pole core is fixedly installed Spring Card
Plate, the compressed spring are compressed between the spring clamp plate and the electromagnetism brandreth.
6. multifunctional inertia law demonstrator according to claim 5, which is characterized in that the Hall magnetic switch configuration
There are two Hall sensor and two magnet, the front and rear sides of the shot trolley be arranged with a Hall sensor and
One magnet, two Hall sensors are separately fixed at the front and rear sides wall of the shot trolley, two magnetic
Iron is each attached on the substrate, and the Hall sensor is corresponded with the magnet.
7. multifunctional inertia law demonstrator according to claim 1, which is characterized in that the sand loading box supporting table is to fall
The U-shaped board structure set, is fixed between the substrate by detachable connection structure.
8. multifunctional inertia law demonstrator according to claim 1, which is characterized in that the dress water box and the ejection
It is the Demountable being bolted between trolley, passes through triangle link of boards between cassette bottom and the shot trolley
It reinforces.
9. multifunctional inertia law demonstrator according to claim 1, which is characterized in that the top surface of the substrate is equipped with
Level meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810246104.9A CN108447355B (en) | 2018-03-23 | 2018-03-23 | Multifunctional inertia law demonstration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810246104.9A CN108447355B (en) | 2018-03-23 | 2018-03-23 | Multifunctional inertia law demonstration instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108447355A true CN108447355A (en) | 2018-08-24 |
| CN108447355B CN108447355B (en) | 2020-11-13 |
Family
ID=63196857
Family Applications (1)
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| CN109345920A (en) * | 2018-08-31 | 2019-02-15 | 南京理工大学 | A kind of experimental provision convenient for detection object inertia and relationship between quality |
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| CN111564090A (en) * | 2020-06-08 | 2020-08-21 | 北京中电智诚科技有限公司 | System and method for realizing inertia test |
| CN112289145A (en) * | 2020-10-25 | 2021-01-29 | 齐齐哈尔大学 | Experimental device for explore inertia problem under periodic acceleration reference system |
| CN112289144A (en) * | 2020-10-25 | 2021-01-29 | 齐齐哈尔大学 | Experimental method for researching inertia problem under simple harmonic motion reference system |
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| CN109345920B (en) * | 2018-08-31 | 2021-03-23 | 南京理工大学 | Experimental device convenient for detect object inertia and mass relation |
| CN109615988A (en) * | 2019-01-23 | 2019-04-12 | 胡乐怡 | A kind of physics teaching inertial demonstration device |
| CN111564090A (en) * | 2020-06-08 | 2020-08-21 | 北京中电智诚科技有限公司 | System and method for realizing inertia test |
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