CN112270875B - Physical gravity experiment simulation device - Google Patents
Physical gravity experiment simulation device Download PDFInfo
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- CN112270875B CN112270875B CN202011212927.3A CN202011212927A CN112270875B CN 112270875 B CN112270875 B CN 112270875B CN 202011212927 A CN202011212927 A CN 202011212927A CN 112270875 B CN112270875 B CN 112270875B
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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 physical gravity experiment simulation device, which relates to the technical field of experimental equipment and comprises an experiment box, a transmitting unit, a movable assembly and a control box, wherein the transmitting unit and the movable assembly are both arranged in the experiment box, a controller is arranged in the control box, a plurality of distance measuring units are also arranged on the bottom surface in the experiment box, when the transmitting unit transmits marbles out of the experiment box to simulate flat throw motion, the distance measuring units measure the height of each position in the flying process of the marbles, and the controller controls the movable assembly to move in the vertical direction according to the measured height value, so that the connecting line of the movable assembly forms the actual track of the flying marbles. The device can detect and display the actual track of the horizontal projectile motion, so that students can intuitively understand the horizontal projectile motion.
Description
Technical Field
The invention relates to the technical field of experimental equipment, in particular to a physical gravity experiment simulation device.
Background
The gravity-related experiment in the physical teaching is very important, the most common experiment related to the gravity belongs to the experiment of horizontal projectile motion, and the horizontal projectile motion not only enables students to visually know the influence of the gravity on objects, but also can deepen the understanding of the relevant knowledge such as the decomposition, the synthesis and the like of the force.
Because the horizontal projectile motion speed is fast, the whole process image of the horizontal projectile motion needs to be recorded by means of equipment such as a camera, and the track of the horizontal projectile motion is recovered based on the recorded image. The movement track is synthesized in the later stage and can only be displayed through equipment such as a display screen, so that the movement track is not visualized enough, and the learning effect of students is not good enough.
Disclosure of Invention
The embodiment of the invention provides a physical gravity experiment simulation device, which can solve the problems in the prior art.
The invention provides a physical gravity experiment simulation device, which comprises an experiment box, a transmitting unit, a movable assembly and a control box, wherein the transmitting unit, the movable assembly and the control box are arranged on the experiment box;
the front side plate of the experimental box is made of transparent materials, the emission unit is arranged at the position, close to the top, of the left side plate or the right side plate of the experimental box, and the movable assemblies are arranged in the experimental box and can move in the vertical direction;
the inner side surface of the bottom plate of the experimental box is also provided with a plurality of distance measuring units, the number of the distance measuring units is the same as that of the movable assemblies, the positions of the distance measuring units correspond to one another, and the transmitting unit and the distance measuring units are positioned in the same vertical plane;
the control box is internally provided with a controller, the controller is electrically connected with the launching unit, the movable assembly and the distance measuring unit respectively, when the launching unit launches the marble out to simulate horizontal projectile motion, the distance measuring unit measures the height of each position in the flying process of the marble, and the controller controls the movable assembly to move to the position corresponding to the height of the marble in the vertical direction according to the height data obtained through measurement.
Preferably, the movable assembly comprises an air pump and a furling motor;
the air pump is arranged on the outer side surface of the top plate of the experiment box, the furling motor is arranged at the position, close to the top end, of the inner side surface of the left side plate or the right side plate of the experiment box, a furling shaft is coaxially and fixedly connected with a rotating shaft of the scroll motor, and the tail end of the furling shaft is rotatably arranged on the inner side surface of the side plate, opposite to the furling motor, of the experiment box;
the winding shaft is sleeved with a plurality of air bags made of elastic materials, the number of the air bags is the same as that of the distance measuring units, the positions of the air bags correspond to one another, each air bag is connected with a sliding block through a pull rope, and the sliding blocks naturally droop;
the air outlet of the air pump is connected with a plurality of bronchus, the number of the bronchus is the same as that of the air bags, the tail end of each bronchus is communicated with one air bag, each bronchus is provided with an electromagnetic valve, and the electromagnetic valves are electrically connected with the controller;
the control device calculates the diameter of each air bag according to height data obtained by measurement of the distance measuring unit, determines the amount of gas to be filled into the air bag by the air pump according to the diameter of the air bag, the controller controls the air pump to fill the corresponding amount of gas into each air bag, and finally controls the furling motor to work, the furling shaft rotates to drive the air bag to rotate, so that the pull rope is furled on the air bag, and the sliding block moves to a position corresponding to the height of the marble.
Preferably, a plurality of vertical guide rods are fixedly installed inside the experiment box, the guide rods are parallel to each other and are arranged along the width direction of the experiment box at equal intervals, the number of the guide rods is the same as that of the air bags, the guide rods correspond to the air bags in position one to one, and the slide blocks are slidably installed on the guide rods in one to one correspondence.
Preferably, baffles are fixedly mounted on two sides of each air bag on the furling shaft, and the baffles are coaxially sleeved on the furling shaft.
Preferably, the test box further comprises a collecting unit, the collecting unit is arranged on the outer side face of the side plate opposite to the transmitting unit on the test box and is positioned close to the bottom of the side plate, and the collecting unit is communicated with the interior of the test box.
Preferably, the opening for filling on the launching unit and the opening for taking out the marble on the collecting unit are respectively hinged with a closing door.
Preferably, the air inlet of the air pump is communicated with the inside of the experiment box through an air inlet pipe.
Preferably, the launching unit is internally provided with a filling slide way and a launching slide way, one end of the filling slide way is positioned at one end of the launching unit, which is positioned outside the experimental box, and the other end of the filling slide way is intersected with the launching slide way;
the export of transmission slide extends to the transmission unit is located on the terminal surface of the inside one end of experimental box, transmission slide internally mounted has electro-magnet and magnet piece, the electro-magnet is located the one end of keeping away from the export in the transmission slide, the magnet piece is located between electro-magnet and the export, just be connected with the spring between electro-magnet and the magnet piece, the electro-magnet is connected with the controller electricity.
Preferably, a display screen electrically connected with the controller is arranged on the inner side surface of the rear side plate of the experiment box;
when the shooting unit shoots the marble, the controller records and records current introduced into the electromagnet, determines the initial speed of the marble according to the recorded current, draws a theoretical track of the marble based on the initial speed, and controls the display screen to display the theoretical track after the theoretical track is obtained.
The invention relates to a physical gravity experiment simulation device which comprises an experiment box, a transmitting unit, a movable assembly and a control box, wherein the transmitting unit and the movable assembly are both arranged in the experiment box, the control box is internally provided with a controller, the bottom surface in the experiment box is also provided with a plurality of distance measuring units, when the transmitting unit transmits a marble out to simulate flat throw motion, the distance measuring units measure the height of each position in the flying process of the marble, and the controller controls the movable assembly to move in the vertical direction according to the measured height value, so that the connecting line of the movable assembly forms the actual track of the marble flying. The device can detect and display the actual track of the horizontal projectile motion, so that students can intuitively understand the horizontal projectile motion.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic front structural view of a physical gravity experiment simulation apparatus provided by the present invention;
FIG. 2 is a schematic side view of the device of FIG. 1;
FIG. 3 is a schematic view of the roll-up spindle with baffles and air bags mounted thereon;
FIG. 4 is a schematic view showing the connection between the air pump and the air bag;
fig. 5 is a schematic horizontal sectional view of the transmitting unit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a physical gravity experiment simulation apparatus, which includes a laboratory box 100, and a launching unit 200, a collecting unit 300, an air pump 400, a furling motor 500 and a control box 600 mounted on the laboratory box 100.
The front side plate of the experimental box 100 is made of a transparent material, the launching unit 200 is installed at a position close to the top of the left side plate or the right side plate of the experimental box 100, one end of the launching unit 200 is located outside the experimental box 100, the other end of the launching unit 200 is located inside the experimental box 100, one end of the launching unit 200 located outside the experimental box 100 is used for filling marbles inside the launching unit 200, and one end located inside the experimental box 100 is used for horizontally launching the marbles to simulate horizontal projectile motion.
The collecting unit 300 is installed on the outer side surface of the side plate opposite to the launching unit 200 on the experimental box 100, and is located at a position close to the bottom of the side plate, the collecting unit 300 is communicated with the inside of the experimental box 100, after the marble falls on the inner bottom surface of the experimental box 100, the marble can fall in the collecting unit 300, and the marble can be taken out by opening the collecting unit 300.
The air pump 400 and the control box 600 are both installed on the outer side surface of the top plate of the experimental box 100, and the furling motor 500 is installed on the inner side surface of the left side plate or the right side plate of the experimental box 100 near the top end. The rotating shaft of the reel motor 500 is coaxially and fixedly connected with a furling shaft 510, and the tail end of the furling shaft 510 is rotatably installed on the inner side surface of the side plate of the experimental box 100 opposite to the furling motor 500.
The experimental box 100 is fixedly provided with a plurality of vertical guide rods 110, the upper ends and the lower ends of the guide rods 110 are respectively fixed on the inner side surfaces of the top plate and the bottom plate of the experimental box 100, and the guide rods 110 are parallel to each other and are arranged along the width direction of the experimental box 100 at equal intervals.
Each guide rod 110 is sleeved with a sliding block 120 in a sliding mode, a plurality of distance measuring units 130 are further installed on the inner side face of the bottom plate of the experimental box 100, the number of the distance measuring units 130 is the same as that of the guide rods 110, the positions of the distance measuring units 130 correspond to those of the guide rods 110 one by one, and the distance measuring ends of the distance measuring units 130 face to the upper side. In this embodiment, the distance measuring unit 130 is located inside the experiment box 100 near the front side plate, the guide bar 110 is located at the center of the experiment box in the thickness direction, and the furling motor 500 is located inside the experiment box 100 near the rear side plate, so that the distance measuring unit 130, the guide bar 110 and the furling motor 500 are arranged in the experiment box 100 from front to back in the thickness direction. The end of the launching unit 200 located inside the experimental box 100 is also located near the front side plate, and the end of the launching unit 200 located inside the experimental box 100 and the ranging unit 130 are located in the same vertical plane, so that after the marble is launched from the launching unit 200, the ranging unit 130 can measure the heights of the marble at different positions.
The control box 600 has a controller and a power source inside, preferably a battery, to facilitate the movement of the device. The controller and the air pump 400, the furling motor 500, the transmitting unit 200 and the distance measuring unit 130 are all electrically connected.
In this embodiment, a display screen electrically connected to the controller is further installed on an inner side surface of the rear side plate of the experimental box 100, the size of the display screen is at least equal to the movement range of the marble, and after the horizontal projectile movement simulation is completed, the display screen controls the display screen to display a theoretical trajectory corresponding to the horizontal projectile movement.
Referring to fig. 2 and 3 together, a plurality of groups of baffles 511 are fixedly mounted on the furling shaft 510, the number of the baffles 511 in each group is two, the two baffles 511 are coaxially sleeved on the furling shaft 510, an air bag 512 made of elastic material is arranged between the two baffles 511 in each group, the air bag 512 is also sleeved on the furling shaft 510, after the air bag 512 is inflated or deflated, the air bag can be uniformly expanded or deflated along each direction on the furling shaft 510, and the air bag 512 is clamped between the two baffles 511 in one group, so that when the air bag 512 is expanded or deflated, the size is changed only along the radial direction, and is not changed along the axial direction, so that the diameter of the air bag 512 is more conveniently controlled.
The number of the air bags 512 is the same as that of the guide rods 110, and the air bags 512 correspond to the guide rods 110. Each of the air bags 512 is fixedly connected with a pulling rope 513, and the tail end of the pulling rope 513 is connected with the corresponding sliding block 120 on the guide rod 110, so that when the furling shaft 510 rotates under the control of the furling motor 500, the air bags 512 rotate along with the furling shaft 510 to furl the pulling rope 513, so that the sliding block 120 moves on the guide rod 110 in the vertical direction.
Referring to fig. 4, the air pump 400 has an air inlet and an air outlet, and the air inlet is communicated with the inside of the experimental box 100 through an air inlet pipe to draw out air inside the experimental box 100, so as to reduce air resistance during movement of marbles. The air outlet is connected with a main air pipe 410, the tail end of the main air pipe 410 is connected with an air outlet pipe 420 and a plurality of branch air pipes 430, the number of the branch air pipes 430 is the same as that of the air bags 512, and the tail end of each branch air pipe 430 is communicated with one air bag 512. In this embodiment, the air inlet pipe, the air outlet pipe 420 and each of the branch pipes 430 are respectively provided with an electromagnetic valve, and the electromagnetic valves are electrically connected with the controller.
Referring to fig. 5, the transmitting unit 200 has two slide ways inside: a priming slide 210 and a launching slide 220, wherein one end of the priming slide 210 is located at one end of the launching unit 200 at the outside of the experimental box 100, and the other end meets the launching slide 220. The exit of the launching chute 220 extends to the end face of the launching unit 200 at one end inside the experimental box 100, an electromagnet 230 and a magnet block 240 are installed inside the launching chute 220, the electromagnet 230 is located at one end of the launching chute 220 far away from the exit, the magnet block 240 is located between the electromagnet 230 and the exit, and a spring 250 is connected between the electromagnet 230 and the magnet block 240.
In this embodiment, the end of the magnet 240 away from the electromagnet 230 is connected to a striking block 260, and the bottom surface of the junction of the filling chute 210 and the launching chute 220 has a spherical groove, and when the marble enters from the filling chute 210, it automatically falls into the spherical groove and remains still. The filling chute 210 is hinged to a closed door at one end outside the experimental box 100, and a closed door is hinged to an outlet of the collecting unit 300 to maintain the negative pressure environment inside the experimental box 100.
The device of the invention is used as follows:
after the marble is filled in the launching unit, the controller controls the electromagnet 230 to be powered on, the electromagnet 230 generates a magnetic field to attract the magnet block 240 to approach, the spring 250 is compressed, the controller records the current conducted in the electromagnet 230 at the moment, then the controller controls the electromagnet 230 to be powered off, the magnet block 240 rapidly moves to a position close to the outlet under the action of the spring after the magnetic field disappears, and after the collision block 260 contacts the marble in the spherical groove, the marble is rapidly ejected. The controller controls the distance measuring unit 130 to start measuring the distance while controlling the electromagnet 230 to be powered off, and the distance measuring unit 130 transmits the measured minimum distance to the controller when the marble flies over the distance measuring unit 130.
The controller determines the height of each position in the marble flying direction according to the number of the distance measuring unit 130, calculates the distance of upward sliding of each slide block 120 according to each height value, converts the distance into the number of turns of the winding shaft 510, then determines the diameter of each air bag 512 according to the number of turns of the winding shaft 510, calculates the amount of gas to be charged into each air bag 512 according to diameter data, sequentially opens the electromagnetic valve on each branch air pipe 430, controls the air pump 400 to charge the corresponding amount of gas into the air bag 512 after the electromagnetic valve is opened, and controls the winding motor 500 to rotate for the set number of turns after all the air bags 512 are charged with the corresponding amount of gas, so that the slide block 120 moves upward to the required height under the driving of the pull rope 513. At this time, the height of the slider 120 is the actual height of the marble in the flying process, and the curve formed by the plurality of sliders 120 is the actual trajectory of the marble in the flying process.
After the actual track is displayed, the controller determines the final speed of the collision block 260, namely the initial speed of the marble, according to the current introduced into the electromagnet 230, and can draw a corresponding theoretical track based on the initial speed, and the theoretical track and the actual track can be superposed and compared after the controller controls the display screen to display the theoretical track.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. A physical gravity experiment simulation device is characterized by comprising an experiment box, a transmitting unit, a movable assembly and a control box, wherein the transmitting unit, the movable assembly and the control box are arranged on the experiment box;
the front side plate of the experimental box is made of transparent materials, the emission unit is arranged at the position, close to the top, of the left side plate or the right side plate of the experimental box, and the movable assemblies are arranged in the experimental box and can move in the vertical direction;
the inner side surface of the bottom plate of the experimental box is also provided with a plurality of distance measuring units, the number of the distance measuring units is the same as that of the movable assemblies, the positions of the distance measuring units correspond to one another, and the transmitting unit and the distance measuring units are positioned in the same vertical plane;
the control box is internally provided with a controller, the controller is electrically connected with the launching unit, the movable assembly and the distance measuring unit respectively, when the launching unit launches the marble out to simulate horizontal projectile motion, the distance measuring unit measures the height of each position in the flying process of the marble, and the controller controls the movable assembly to move to a position corresponding to the height of the marble in the vertical direction according to the measured height data;
the movable component comprises an air pump and a winding motor;
the air pump is arranged on the outer side surface of the top plate of the experiment box, the furling motor is arranged at the position, close to the top end, of the inner side surface of the left side plate or the right side plate of the experiment box, a furling shaft is coaxially and fixedly connected with a rotating shaft of the furling motor, and the tail end of the furling shaft is rotatably arranged on the inner side surface of the side plate, opposite to the furling motor, of the experiment box;
the winding shaft is sleeved with a plurality of air bags made of elastic materials, the number of the air bags is the same as that of the distance measuring units, the positions of the air bags correspond to one another, each air bag is connected with a sliding block through a pull rope, and the sliding blocks naturally droop;
the air outlet of the air pump is connected with a plurality of bronchus, the number of the bronchus is the same as that of the air bags, the tail end of each bronchus is communicated with one air bag, each bronchus is provided with an electromagnetic valve, and the electromagnetic valves are electrically connected with the controller;
the control device calculates the diameter of each air bag according to height data measured by the distance measuring unit, determines the amount of gas to be filled into the air bag by the air pump according to the diameter of the air bag, controls the air pump to fill the corresponding amount of gas into each air bag, and finally controls the furling motor to work, the furling shaft rotates to drive the air bag to rotate, so that the pull rope is furled on the air bag, and the slide block moves to a position corresponding to the height of the marble;
a plurality of vertical guide rods are fixedly arranged in the experiment box, the guide rods are parallel to each other and are arranged along the width direction of the experiment box at equal intervals, the number of the guide rods is the same as that of the air bags, the guide rods correspond to the air bags in position one by one, and a plurality of sliding blocks are slidably arranged on the guide rods in one-to-one correspondence;
the baffle is fixedly arranged on the two sides of each air bag on the furling shaft and is coaxially sleeved on the furling shaft.
2. The physical gravity experiment simulation apparatus according to claim 1, further comprising a collection unit installed on an outer side of the side plate opposite to the emission unit on the experimental box at a position near to a bottom of the side plate, the collection unit communicating with an inside of the experimental box.
3. A physical gravity experiment simulation device according to claim 2, wherein the opening for filling of the launching unit and the opening for taking out the marble of the collecting unit are respectively hinged with a closing door.
4. The physical gravity experiment simulation device as claimed in claim 3, wherein the air inlet of the air pump is communicated with the inside of the experiment box through an air inlet pipe.
5. The physical gravity experiment simulation device as claimed in claim 1, wherein the launching unit has a loading slide and a launching slide inside, one end of the loading slide is located at the end of the launching unit outside the experimental box, and the other end of the loading slide meets the launching slide;
the export of transmission slide extends to the transmission unit is located on the terminal surface of the inside one end of experimental box, transmission slide internally mounted has electro-magnet and magnet piece, the electro-magnet is located the one end of keeping away from the export in the transmission slide, the magnet piece is located between electro-magnet and the export, just be connected with the spring between electro-magnet and the magnet piece, the electro-magnet is connected with the controller electricity.
6. The physical gravity experiment simulation device according to claim 5, wherein a display screen electrically connected with the controller is installed on the inner side surface of the back side plate of the experiment box;
when the shooting unit shoots the marble, the controller records current introduced into the electromagnet, determines the initial speed of the marble according to the recorded current, draws a theoretical track of the marble based on the initial speed, and controls the display screen to display the theoretical track after the theoretical track is obtained.
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