CN209879918U - Free falling body experiment demonstration device - Google Patents
Free falling body experiment demonstration device Download PDFInfo
- Publication number
- CN209879918U CN209879918U CN201920363301.9U CN201920363301U CN209879918U CN 209879918 U CN209879918 U CN 209879918U CN 201920363301 U CN201920363301 U CN 201920363301U CN 209879918 U CN209879918 U CN 209879918U
- Authority
- CN
- China
- Prior art keywords
- reinforcing plate
- ball
- free fall
- plate
- base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Toys (AREA)
Abstract
The utility model discloses a free fall experiment presentation device relates to physics experiment demonstration technical field, this free fall experiment presentation device, including base, reinforcing plate and roof, the bottom of reinforcing plate and the top left side fixed connection of base, roof and reinforcing plate swing joint, the right side fixed mounting of roof has the infrared probe of second, the top fixed mounting of reinforcing plate has servo motor, the adjustment tank has been seted up to the inside top side of reinforcing plate. This free fall experiment presentation device can carry out altitude mixture control, realizes the not co-altitude demonstration free fall motion, and the scale mark can audio-visual height value of observing simultaneously, and first infrared probe and the cooperation of second infrared probe are used, can demonstrate the time of gravity ball whereabouts through the chronometer, and then the classroom of being convenient for teaching calculation, and the camera can take notes the orbit that the gravity ball was the free fall motion to show through the display screen, convenient teaching.
Description
Technical Field
The utility model relates to a physical experiment demonstration technical field specifically is a free fall experiment demonstration device.
Background
Physics is the subject of studying the most general laws of motion and basic structures of substances. As the leading subject of natural science, physical studies are as large as the universe and as small as the most basic motion forms and laws of all substances such as basic particles, and therefore, the method becomes the research foundation of other natural science subjects. The theoretical structure of the system fully uses mathematics as the working language of the system, and experiments are used as the only standard for checking the theoretical correctness, which is the most precise natural science subject at present.
The conventional object moves with zero initial velocity only under the action of gravity, and the conventional object is called free-fall motion. Free fall motion is a physical model in an ideal situation. The acceleration is that any object generates an inertia track under the action of gravity, at least initially, only the gravity is the only force condition, and the acceleration is uniform with the initial speed of 0. Since this definition does not specify the direction of the initial velocity, it also applies to the initial upward movement of the object. In the case of free fall, gravity other than the atmosphere causes weight loss, and any weight loss state is sometimes called free fall due to inertial motion. This may also be applicable to weight loss because the body is far from the gravitational body. Although the definition of strict technical application does not include that the moving object is subjected to other resistance, such as air resistance, in non-technical usage, a parachute which is not deployed through the atmosphere or a hoisting device is also often called free fall, and the existing free fall experiment demonstration device is inconvenient for teaching and calculating experiment data, inconvenient for use and operation and poor in practicability.
At present, the current free fall experiment presentation device is inconvenient to use, is unfavorable for using widely.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The not enough to prior art, the utility model provides a free fall experiment presentation device has solved the inconvenient teaching calculation experimental data of current free fall experiment presentation device, inconvenient operation of using and the relatively poor problem of practicality.
(II) technical scheme
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:
a free falling body experiment demonstration device comprises a base, a reinforcing plate and a top plate, wherein the bottom of the reinforcing plate is fixedly connected with the left side of the top of the base, the top plate is movably connected with the reinforcing plate, a second infrared probe is fixedly installed on the right side of the top plate, a servo motor is fixedly installed on the top of the reinforcing plate, and an adjusting groove is formed in the top side of the inner portion of the reinforcing plate;
a screw rod is movably mounted inside the adjusting groove, the top plate is in threaded connection with the screw rod, the top plate is in sliding connection with the inner wall of the adjusting groove, a mounting plate is fixedly mounted at the bottom of the left side of the reinforcing plate, a timing watch and a display screen are fixedly mounted on the surface of the mounting plate, and supporting legs are fixedly connected to two sides of the bottom of the base;
the walking wheels are movably mounted at the bottoms of the supporting legs, the ball dropping box is fixedly mounted in the middle of the bottom of the base, storage boxes are arranged on two sides of the ball dropping box, the ball throwing hopper is fixedly mounted at the top of the top plate, and a stop lever is movably mounted inside the ball throwing hopper;
the outer end fixed mounting of pin has the drawing piece, the ball groove that falls has been seted up to the inside of base, the top opening part movable mounting of ball box that falls has the buffer board, the interior diapire of ball box that falls is provided with the sand bed.
Optionally, the top plate penetrates through the inside of the reinforcing plate, and the top plate is L-shaped.
Optionally, the surface of the reinforcing plate close to the adjusting groove is provided with scale marks;
the top end of the screw rod is fixedly connected with the output end of the servo motor.
Optionally, a camera is fixedly mounted in the middle of the right side of the reinforcing plate, and a first infrared probe is fixedly mounted at the bottom of the right side of the reinforcing plate.
Optionally, the timing meter is located above the display screen;
the storage box is fixedly connected with the bottom of the base.
Optionally, the outer surface of the stop lever is sleeved with a first spring, and two ends of the first spring are fixedly connected with the pull block and the outer surface of the ball throwing hopper respectively.
Optionally, the ball falling groove and the ball falling box are correspondingly arranged;
and a second spring is fixedly connected between the buffer plate and the ball falling groove.
(III) advantageous effects
The utility model provides a free fall experiment presentation device possesses following beneficial effect:
(1) this free fall experiment presentation device, through setting up servo motor, the adjustment tank, screw rod and roof, can carry out altitude mixture control, realize not co-altitude demonstration free fall motion, the scale mark can audio-visually observe the height value simultaneously, first infrared probe and the cooperation of the infrared probe of second are used, can demonstrate the time of gravity ball whereabouts through the chronometer, and then be convenient for classroom teaching calculation, the camera can take notes the orbit that free fall motion was done to the gravity ball, and show out through the display screen, convenient teaching.
(2) This free fall experiment presentation device, through setting up the storage box, can deposit the gravity ball of different specification quality, the later stage demonstration of being convenient for is used, throw the ball fill through the setting, the pin, draw piece and first spring, the pin can support and block the gravity ball, the whereabouts of control gravity ball of being convenient for, easy operation is swift, throw the ball simultaneously and fight and can put in the gravity ball of equidimension not, presentation device's practicality has further been strengthened, through setting up the ball groove that falls, the buffer board, second spring and sand bed, buffering effect is good, avoid gravity ball bounce-back, and make the gravity ball can directly fall into in the ball box that falls, the convenient next time is got and is taken the use.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a right side view of the reinforcing plate of the present invention;
FIG. 3 is a schematic cross-sectional view of the pitching bucket of the present invention;
fig. 4 is a schematic sectional view of the ball dropping box of the present invention.
In the figure: 1. a base; 2. a reinforcing plate; 3. a top plate; 4. a servo motor; 5. an adjustment groove; 6. scale lines; 7. a screw; 8. a camera; 9. a first infrared probe; 10. mounting a plate; 11. a chronograph watch; 12. a display screen; 13. a second infrared probe; 14. supporting legs; 15. a ball falling box; 16. a storage box; 17. a ball throwing hopper; 18. a stop lever; 19. pulling the block; 20. a first spring; 21. a ball falling groove; 22. a buffer plate; 23. a second spring; 24. and (5) a sand layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "disposed," "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; may be a mechanical connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
Referring to fig. 1-4, the present invention provides a technical solution:
a free falling body experiment demonstration device comprises a base 1, a reinforcing plate 2 and a top plate 3, wherein the bottom of the reinforcing plate 2 is fixedly connected with the left side of the top of the base 1, the top plate 3 is movably connected with the reinforcing plate 2, a second infrared probe 13 is fixedly installed on the right side of the top plate 3, a servo motor 4 is fixedly installed on the top of the reinforcing plate 2, and an adjusting groove 5 is formed in the top side of the inner part of the reinforcing plate 2;
a screw 7 is movably mounted inside the adjusting groove 5, the top plate 3 is in threaded connection with the screw 7, the top plate 3 is in sliding connection with the inner wall of the adjusting groove 5, a mounting plate 10 is fixedly mounted at the bottom of the left side of the reinforcing plate 2, a timing meter 11 and a display screen 12 are fixedly mounted on the surface of the mounting plate 10, and supporting legs 14 are fixedly connected to two sides of the bottom of the base 1;
the bottom of the supporting leg 14 is movably provided with a travelling wheel, the middle of the bottom of the base 1 is fixedly provided with a ball dropping box 15, two sides of the ball dropping box 15 are respectively provided with a storage box 16, the top of the top plate 3 is fixedly provided with a ball throwing hopper 17, and the inside of the ball throwing hopper 17 is movably provided with a stop lever 18;
the outer end of the stop lever 18 is fixedly provided with a pull block 19, the base 1 is internally provided with a ball falling groove 21, the top opening of the ball falling box 15 is movably provided with a buffer plate 22, and the inner bottom wall of the ball falling box 15 is provided with a sand layer 24.
As an optional technical solution of the utility model:
the top plate 3 penetrates the reinforcing plate 2, and the top plate 3 is L-shaped.
As an optional technical solution of the utility model:
the surface of the reinforcing plate 2 close to the adjusting groove 5 is provided with scale marks 6;
the top of screw rod 7 and servo motor 4's output fixed connection, through setting up servo motor 4, adjustment tank 5, screw rod 7 and roof 3, altitude mixture control can carry out, realize not co-altitude demonstration free fall motion, scale mark 6 can audio-visually observe the height value simultaneously, first infrared probe 9 and the cooperation of second infrared probe 13 are used, 13 response gravity ball whereabouts of second infrared probe trigger timekeeper 11 and begin the timing, first infrared probe 9 response gravity ball falls to the ground and triggers timekeeper 11 and stop the timing, can demonstrate the time of gravity ball whereabouts through timekeeper 11 after that, and then be convenient for the classroom teaching and calculate, the orbit that free fall motion was done to the gravity ball can be recorded to camera 8, and show through display screen 12, convenient teaching.
As an optional technical solution of the utility model:
the middle part of the right side of the reinforcing plate 2 is fixedly provided with a camera 8, and the bottom of the right side of the reinforcing plate 2 is fixedly provided with a first infrared probe 9.
As an optional technical solution of the utility model:
the chronograph watch 11 is positioned above the display screen 12;
the storage box 16 is fixedly connected with the bottom of the base 1, and gravity balls with different specifications and masses can be stored through the storage box 16, so that later-period demonstration and use are facilitated.
As an optional technical solution of the utility model:
first spring 20 has been cup jointed to the surface of pin 18, and the both ends difference fixedly connected with of first spring 20 draws the surface of piece 19 and pitching fill 17, throws ball fill 17, pin 18, draws piece 19 and first spring 20 through the setting, and pin 18 can support and block the gravity ball, is convenient for control the whereabouts of gravity ball, and easy operation is swift, throws the ball simultaneously and fights 17 and can put in the gravity ball of equidimension not, has further strengthened presentation device's practicality.
As an optional technical solution of the utility model:
the ball falling groove 21 and the ball falling box 15 are correspondingly arranged;
fixedly connected with second spring 23 between buffer board 22 and the ball groove 21 that falls, through setting up ball groove 21, buffer board 22, second spring 23 and sand bed 24 that falls, buffering effect is good, avoids the gravity ball bounce-back, and makes the gravity ball can directly fall into the ball box 15 that falls, conveniently gets next time and takes the use.
In conclusion, in the free falling body experiment demonstration device, when in use, firstly the height required for demonstrating the free falling body movement is adjusted, the servo motor 4 is started, the servo motor 4 rotates forwards and backwards to drive the screw rod 7 to rotate, due to the limiting effect of the adjusting groove 5 on the top plate 3, the top plate 3 slides upwards or downwards along the adjusting groove 5, after the height is adjusted, the height value can be visually displayed through the scale mark 6, then the gravity ball is taken out from the storage box 16 and put into the ball throwing hopper 17, at the moment, the gravity ball is blocked by the blocking rod 18, the pulling block 19 is pulled outwards, the first spring 20 is stretched and deformed, the blocking rod 18 is pulled out, when the gravity ball falls, the first infrared probe 9 and the second infrared probe 13 are matched for use, the falling time of the gravity ball can be displayed through the timing meter 11, the classroom teaching calculation is further facilitated, the camera 8 can record the trajectory of the gravity ball making the free falling body movement, and show through display screen 12, convenient teaching, through setting up ball groove 21, buffer board 22, second spring 23 and sand bed 24 that falls, buffering effect is good, avoids the gravity ball bounce-back, and makes the gravity ball can directly fall into and fall into ball box 15, makes things convenient for next time to get and takes the use.
It is noted that in the present disclosure, unless otherwise explicitly specified or limited, a first feature "on" or "under" a second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (7)
1. The utility model provides a free fall experiment presentation device, includes base (1), reinforcing plate (2) and roof (3), its characterized in that: the bottom of the reinforcing plate (2) is fixedly connected with the left side of the top of the base (1), the top plate (3) is movably connected with the reinforcing plate (2), a second infrared probe (13) is fixedly installed on the right side of the top plate (3), a servo motor (4) is fixedly installed on the top of the reinforcing plate (2), and an adjusting groove (5) is formed in the top side of the interior of the reinforcing plate (2);
a screw rod (7) is movably mounted inside the adjusting groove (5), the top plate (3) is in threaded connection with the screw rod (7), the top plate (3) is in sliding connection with the inner wall of the adjusting groove (5), a mounting plate (10) is fixedly mounted at the bottom of the left side of the reinforcing plate (2), a timing watch (11) and a display screen (12) are fixedly mounted on the surface of the mounting plate (10), and supporting legs (14) are fixedly connected to two sides of the bottom of the base (1);
the walking wheels are movably mounted at the bottoms of the supporting legs (14), the ball dropping box (15) is fixedly mounted in the middle of the bottom of the base (1), storage boxes (16) are arranged on two sides of the ball dropping box (15), a ball throwing hopper (17) is fixedly mounted at the top of the top plate (3), and a stop lever (18) is movably mounted inside the ball throwing hopper (17);
the outer end fixed mounting of pin (18) has and draws piece (19), ball groove (21) have been seted up to the inside of base (1), the open-top portion movable mounting of ball box (15) that falls has buffer board (22), the inner diapire of ball box (15) that falls is provided with sand bed (24).
2. The free fall experiment demonstration apparatus of claim 1 further comprising:
the top plate (3) penetrates through the inner part of the reinforcing plate (2), and the top plate (3) is L-shaped.
3. The free fall experiment demonstration apparatus of claim 1 further comprising:
the surface of the reinforcing plate (2) close to the adjusting groove (5) is provided with scale marks (6);
the top end of the screw rod (7) is fixedly connected with the output end of the servo motor (4).
4. The free fall experiment demonstration apparatus of claim 1 further comprising:
the right side middle part fixed mounting of reinforcing plate (2) has camera (8), the right side bottom fixed mounting of reinforcing plate (2) has first infrared probe (9).
5. The free fall experiment demonstration apparatus of claim 1 further comprising:
the timing watch (11) is positioned above the display screen (12);
the storage box (16) is fixedly connected with the bottom of the base (1).
6. The free fall experiment demonstration apparatus of claim 1 further comprising:
the outer surface of the stop lever (18) is sleeved with a first spring (20), and two ends of the first spring (20) are fixedly connected with the outer surfaces of the pull block (19) and the pitching bucket (17) respectively.
7. The free fall experiment demonstration apparatus of claim 1 further comprising:
the ball falling groove (21) and the ball falling box (15) are correspondingly arranged;
and a second spring (23) is fixedly connected between the buffer plate (22) and the ball falling groove (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920363301.9U CN209879918U (en) | 2019-03-21 | 2019-03-21 | Free falling body experiment demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920363301.9U CN209879918U (en) | 2019-03-21 | 2019-03-21 | Free falling body experiment demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209879918U true CN209879918U (en) | 2019-12-31 |
Family
ID=68956189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920363301.9U Expired - Fee Related CN209879918U (en) | 2019-03-21 | 2019-03-21 | Free falling body experiment demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209879918U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111477077A (en) * | 2020-05-22 | 2020-07-31 | 安徽师范大学 | Free fall experimental facilities based on thing networking communication technology |
| CN111933000A (en) * | 2020-08-18 | 2020-11-13 | 安庆师范大学 | Combined mechanical arm of force mechanical kinetic energy demonstrator |
-
2019
- 2019-03-21 CN CN201920363301.9U patent/CN209879918U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111477077A (en) * | 2020-05-22 | 2020-07-31 | 安徽师范大学 | Free fall experimental facilities based on thing networking communication technology |
| CN111477077B (en) * | 2020-05-22 | 2021-01-15 | 安徽师范大学 | Free fall experimental facilities based on thing networking communication technology |
| CN111933000A (en) * | 2020-08-18 | 2020-11-13 | 安庆师范大学 | Combined mechanical arm of force mechanical kinetic energy demonstrator |
| CN111933000B (en) * | 2020-08-18 | 2021-12-03 | 安庆师范大学 | Combined mechanical arm of force mechanical kinetic energy demonstrator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209879918U (en) | Free falling body experiment demonstration device | |
| Bryan | Investigating the conservation of mechanical energy using video analysis: four cases | |
| CN110782748A (en) | Gravity acceleration testing arrangement for physics experiments | |
| Dahnuss et al. | Marbles and smartphone on physics laboratory: an investigation for finding coefficient of restitution | |
| CN108062889A (en) | Physics teaching parabola demonstration teaching aid | |
| Li et al. | A homemade atomic force microscope based on a quartz tuning fork for undergraduate instruction | |
| CN104504968B (en) | A method of measurement acceleration of gravity | |
| CN207095774U (en) | A kind of unmanned plane gravity balance verifying attachment | |
| CN108154765A (en) | A kind of movement of falling object experimental provision | |
| CN210804914U (en) | Physics gravimetry demonstration instrument | |
| CN206125465U (en) | Solar wing board ground face mould plans hanging expansion device | |
| CN109994024B (en) | Parabolic motion experiment demonstration device | |
| CN108847093B (en) | Physical teaching is with oblique throwing motion experiment presentation device | |
| CN108630070B (en) | A kind of high school physics level throw motion device | |
| Barrio-Perotti et al. | Experimental evaluation of the drag coefficient of water rockets by a simple free-fall test | |
| CN207883170U (en) | A kind of high school physics movement of falling object device | |
| CN214312241U (en) | Multifunctional measuring device for physical teaching | |
| CN104504965A (en) | Method of verifying momentum theorem in action of variable forces | |
| CN104575189B (en) | Track device for verifying kinematic formula | |
| CN113917482A (en) | Laser radar oblique photography measuring device and surveying and mapping method thereof | |
| CN212966696U (en) | Free fall analogue means for physical teaching | |
| CN208240244U (en) | A kind of high school physics gravity experimental simulation device | |
| CN109712489A (en) | A kind of projectile motion demonstrating instrument | |
| Fitzpatrick | Classical mechanics | |
| CN104504967B (en) | Multifunction dynamic research device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191231 Termination date: 20210321 |