CN220509579U - Multi-ball contrast horizontal projectile demonstration instrument - Google Patents

Abstract

The utility model relates to the field of physical teaching auxiliary tools and discloses a multi-ball comparison level throwing demonstration instrument which comprises a bottom plate, wherein a first level meter is arranged at the top of the bottom plate, a first butterfly screw is connected with the middle of the bottom plate in a threaded mode, an L-shaped support plate is fixedly connected to the top of the bottom plate, a connecting plate is fixedly connected to the left side of the front top of the L-shaped support plate, a pendulum is connected to the middle of the connecting plate in a rotating mode, an I-shaped block is fixedly connected to the top of the L-shaped support plate, the pendulum is in contact with the I-shaped block, and a second fixing plate is fixedly connected to the top of the I-shaped block. According to the utility model, the reference ball can be fixed under the action of the spring, the reference ball can vertically fall through the pendulum bob, a plurality of comparison balls can be ejected out under the action of the elastic sheet, a plurality of small balls with iron cores can be fixed in the middle of the horizontal throwing track under the action of the electromagnet, and the plurality of small balls can fall simultaneously by disconnecting the electromagnet power supply.

Description

Multi-ball contrast horizontal projectile demonstration instrument

Technical Field

The utility model relates to the field of physical teaching auxiliary tools, in particular to a horizontal projectile demonstrating instrument with multiple small ball comparison.

Background

The horizontal throwing exercise is an important knowledge in middle school physics, so that the horizontal throwing exercise is helpful for cultivating scientific thinking and experimental capability of students, and provides application scenes of physical and mathematical knowledge, and is the basis for students to further learn and explore more complex physical concepts and exercise forms.

The traditional most teaching modes are that the horizontal throwing vertical falling instrument and the horizontal throwing motion experiment device are used for measuring vertical movement and horizontal movement, the horizontal throwing vertical falling instrument is used for horizontally throwing a small ball at the moment of separating from the elastic piece through the pendulum striking the elastic piece so as to perform horizontal throwing motion, but at the moment of striking, the elastic piece performs circular motion along with the pendulum, so that the instantaneous speed of separating the small ball from the elastic piece is difficult to ensure, more conditions are that the small ball is thrown upwards in an inclined way, the horizontal throwing motion experiment device is required to adjust the track position for a plurality of times, and experiments are performed for a plurality of times, so that the horizontal throwing horizontal movement of the horizontal throwing motion can be verified to be uniform linear movement, the steps are complicated, and the horizontal throwing demonstration instrument with multiple small ball comparison is provided for solving the problems.

Disclosure of Invention

In order to make up for the defects, the utility model provides a multi-ball-comparison level-throwing demonstration instrument, which aims to solve the problems that when a traditional level-throwing vertical drop instrument carries out level-throwing motion on a ball, the instantaneous speed of the ball, which is separated from an elastic piece, is difficult to be ensured to be horizontal, multiple experiments are needed, and a level-throwing motion experiment device needs multiple repeated tests to verify that the level-throwing motion is uniform linear motion.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a many small balls contrast's flat throwing presentation appearance, includes the bottom plate, the top of bottom plate is provided with level gauge one, the equal threaded connection in middle part of bottom plate has butterfly screw one, the top fixedly connected with L type mounting panel of bottom plate, the preceding top left side fixedly connected with connecting plate of L type mounting panel, the middle part of connecting plate rotates and is connected with the pendulum, the top fixedly connected with I type piece of L type mounting panel, pendulum and I type piece contact, the top fixedly connected with fixed plate two of I type piece, the middle part fixedly connected with shell fragment of I type piece, the bottom fixedly connected with pulley of I type piece, the bottom left side fixedly connected with right angle fixer of I type piece, the equal threaded connection in middle part of I type piece and right angle fixer has butterfly screw four, the opposite side fixedly connected with platform two of right side fixedly connected with platform, the right side fixedly connected with spring of I type piece, the other end fixedly connected with fixed plate four of spring, the right side fixedly connected with mounting panel at the top of L type piece is at the top of L type, the right side fixedly connected with cross beam of L type, the right side fixedly connected with platform is at the top of I type piece.

As a further description of the above technical solution:

the utility model discloses a solar energy collecting device, including L type mounting panel, fixed plate, butterfly screw, transparent rail, butterfly screw, fixed plate, butterfly screw, power switch, the front side fixedly connected with wood piece is five, the rear side fixedly connected with wood piece of L type mounting panel, the front left side fixedly connected with fixed plate of L type mounting panel, the flat throwing track is installed to the front side of fixed plate is one, the equal threaded connection in middle part of L type mounting panel, flat throwing track and wood piece is five, the front side fixedly connected with transparent rail of L type mounting panel, equal threaded connection in middle part of L type mounting panel and transparent rail has butterfly screw two, the orbital middle part fixedly connected with electro-magnet is thrown to the flat, the rear side fixedly connected with switch of L type mounting panel.

As a further description of the above technical solution:

and square paper is fixedly connected to the front side of the L-shaped support plate.

As a further description of the above technical solution:

one end of the horizontal projectile track is an arc-shaped end, and the other end of the horizontal projectile track is a horizontal end.

As a further description of the above technical solution:

the first fixing plates and the flat throwing tracks are provided with a plurality of fixing plates, and the lengths of the first fixing plates are different.

As a further description of the above technical solution:

the bottom of the second platform is provided with a groove, and the groove and the elastic sheet are in a horizontal state.

As a further description of the above technical solution:

the elastic pieces are provided with a plurality of elastic pieces, and the materials of the elastic pieces are different.

The utility model has the following beneficial effects:

1. according to the utility model, under the mutual matching of the structures of the spring, the connecting plate, the fixing plate III, the platform II, the elastic piece, the pendulum bob, the I-shaped block and the like, the reference balls placed in the fixing plate III and the I-shaped block can be fixed under the action of the spring, and meanwhile, a plurality of comparison balls are respectively placed above the elastic pieces made of different materials, can vertically fall down through the pendulum bob and collide with the I-shaped block, and can be ejected out under the action of the elastic pieces, so that the horizontal throwing motion with the same height but different initial speeds can be compared with the free falling body motion with the same height.

2. According to the utility model, under the mutual cooperation of the structures such as the transparent track, the first fixed plate, the flat throwing track, the electromagnet, the power switch and the like, a plurality of pellets can be respectively fixed in the middle of the flat throwing track under the action of the electromagnet, the pellets with iron cores can fall simultaneously by disconnecting the electromagnet power supply, the pellets with different heights can be subjected to flat throwing motion simultaneously, and the staggered installation of the flat throwing track avoids the mutual influence of the pellets due to collision.

Drawings

FIG. 1 is a schematic perspective view of a multi-ball comparative horizontal projectile demonstration instrument according to the present utility model;

fig. 2 is a schematic structural diagram of a spring of a multi-ball-contrast level-throw demonstration instrument according to the present utility model.

Legend description:

1. a bottom plate; 2. a level meter I; 3. butterfly screw I; 4. an L-shaped support plate; 5. square paper; 6. a transparent rail; 7. butterfly screw II; 8. a first fixing plate; 9. a track is horizontally thrown; 10. an electromagnet; 11. a power switch; 12. butterfly screw III; 13. a pendulum; 14. a connecting plate; 15. an I-shaped block; 16. a pulley; 17. a first platform; 18. a cross beam; 19. a second fixing plate; 20. a spring plate; 21. a second platform; 22. a level meter II; 23. butterfly screw IV; 24. a right angle holder; 25. a fixing plate III; 26. a fixing plate IV; 27. a spring; 28. wood block five.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-2, one embodiment provided by the present utility model is: a multi-ball contrast horizontal projectile demonstration instrument comprises a bottom plate 1, a level meter I2 is arranged at the top of the bottom plate 1, a butterfly screw I3 is connected with the middle part of the bottom plate 1 in a threaded manner, an L-shaped support plate 4 is fixedly connected to the top of the bottom plate 1, a connecting plate 14 is fixedly connected to the left side of the front top of the L-shaped support plate 4, a pendulum 13 is rotatably connected to the middle part of the connecting plate 14, the function of the pendulum 13 can be replaced by a spring pin, an I-shaped block 15 is fixedly connected to the top of the L-shaped support plate 4, the shape of the I-shaped block 15 can increase the stability of the I-shaped block during impact, the pendulum 13 is contacted with the I-shaped block 15, a fixing plate II 19 is fixedly connected to the top of the I-shaped block 15, excessive vibration can be prevented from occurring during impact of the I-shaped block 15 by the pendulum 13 under the action of the fixing plate II 19, a spring plate 20 is fixedly connected to the middle part of the I-shaped block 15, a pulley 16 is fixedly connected to the bottom of the I-shaped block 15, the right angle fixer 24 is fixedly connected to the left side of the bottom of the I-shaped block 15, the butterfly screw four 23 is fixedly connected to the middle parts of the I-shaped block 15 and the right angle fixer 24, the second platform 21 is fixedly connected to the other side of the right angle fixer 24, the second level 22 is arranged at the bottom of the second platform 21, the spring 27 is fixedly connected to the right side of the I-shaped block 15, the fourth fixing plate 26 is fixedly connected to the right side of the top of the L-shaped support plate 4, the first platform 17 is slidingly connected to the bottom of the pulley 16, the first platform 17 is fixedly connected to the top of the L-shaped support plate 4, the cross beam 18 is fixedly connected to the outer side of the first platform 17, the third fixing plate 25 is fixedly connected to the right side of the top of the L-shaped support plate 4, the bottom plate 1 can be adjusted to a horizontal state under the action of the first level 2 and the butterfly screw 3, simultaneously, the level of the second platform 21 can be adjusted under the action of the second level meter 22 and the fourth butterfly screw 23, the second platform 21 is in a parallel state, the reference ball is placed in the middle of the third fixing plate 25 and the middle of the I-shaped block 15, the I-shaped block 15 can be pressed against the reference ball under the action of the spring 27, the reference ball can be limited, a plurality of comparison balls are respectively placed above the elastic pieces 20 made of different materials, meanwhile, the color of the comparison balls can be changed for clear comparison, the pendulum 13 can be pulled to reach a proper height and be loosened by pulling the pendulum 13, the I-shaped block 15 can be impacted, the comparison balls can be ejected under the action of the elastic pieces 20, meanwhile, the spring 27 is compressed, the reference ball fixed by the third fixing plate 25 is released from the same height to do free falling body movement, and the horizontal throwing movement with different initial speeds can be compared with the free falling body movement with the same height, and the vertical division movement characteristic is explored.

The rear side of the L-shaped support plate 4 is fixedly connected with a wood block five 28, the left side of the front part of the L-shaped support plate 4 is fixedly connected with a fixing plate one 8, the front side of the fixing plate one 8 is provided with a flat throwing track 9, the middle parts of the L-shaped support plate 4, the fixing plate one 8, the flat throwing track 9 and the wood block five 28 are all in threaded connection with a butterfly screw three 12, the front side of the L-shaped support plate 4 is fixedly connected with a transparent track 6, the middle parts of the L-shaped support plate 4 and the transparent track 6 are all in threaded connection with a butterfly screw two 7, the middle part of the flat throwing track 9 is fixedly connected with an electromagnet 10, the rear side of the L-shaped support plate 4 is fixedly connected with a power switch 11, the level meter one 2 is placed at the horizontal end of the flat throwing track 9, the flat throwing track 9 can be adjusted by rotating the butterfly screw three 12, the flat throwing track 9 can be adjusted to be in a horizontal state, one of the butterfly screws three 12 can be limited under the action of the fixing plate one 8, simultaneously, the other butterfly screw three 12 can be limited under the action of the wood block five 28, so that the butterfly screw three 12 can be screwed down or unscrewed by only rotating the butterfly screw three 12 on the front surface of the L-shaped support plate 4, the transparent track 6 can be adjusted by rotating the butterfly screw two 7, the transparent track 6 is in a horizontal state, meanwhile, the middle part of the horizontal throwing track 9 can be blocked under the action of the electromagnet 10, a reference ball and a contrast ball are respectively placed in the middle part of the horizontal throwing track 9, the electromagnet 10 is magnetically disappeared by closing the power switch 11, a plurality of balls with iron cores can respectively fall from different heights, a plurality of balls falling from different heights can be subjected to the same initial-speed horizontal throwing motion and the same-speed horizontal straight line motion contrast, the characteristics of the horizontal throwing motion are explored, meanwhile, the mutually staggered flat-throwing tracks 9 can avoid the mutual influence of the pellets due to collision.

The front side of the L-shaped support plate 4 is fixedly connected with square paper 5, and tools for recording and analyzing experimental results can better observe and measure the position and track of the movement of the object through the square paper 5.

One end of the horizontal throwing track 9 is an arc-shaped end, and the other end of the horizontal throwing track 9 is a horizontal end, so that the characteristics of horizontal throwing movement can be better simulated and observed.

The first fixing plates 8 and the flat throwing rails 9 are all provided with a plurality of fixing plates, the lengths of the first fixing plates 8 are different, a plurality of small balls can not contact when falling down, and the situation that the small balls collide in the air and cannot be tested is avoided.

The bottom of platform two 21 is provided with the recess, and recess and shell fragment 20 are the horizontality, carries out spacingly to the ball through the recess, prevents that the ball from appearing the condition of upwards moving when shell fragment 20 works to the ball.

The elastic pieces 20 are provided with a plurality of elastic pieces 20, the materials of the elastic pieces 20 are different, and the elastic pieces 20 with different materials have different elastic forces on the small balls, so that the small balls can obtain different impulse, and different horizontal initial speeds are obtained.

Working principle: when in use, firstly, the mobile phone support and the mobile phone are placed right in front of the device, the experiment process is recorded by the mobile phone, the comparison video after the experiment can be slowly explained, the bottom plate 1 can be adjusted to be in a horizontal state under the action of the level meter I2 and the butterfly screw I3, meanwhile, the level of the platform II 21 can be adjusted under the action of the level meter II 22 and the butterfly screw IV 23, the platform II 21 is in a parallel state, meanwhile, the reference ball is placed in the middle of the fixing plate III 25 and the I-shaped block 15, the I-shaped block 15 can squeeze the reference ball under the action of the spring 27, the reference ball can be limited, a plurality of comparison balls are respectively placed above the elastic sheets 20 made of different materials, meanwhile, the color of the comparison balls can be changed for clearing, the comparison balls can be changed by pulling the pendulum 13, the pendulum 13 can be properly high and loosened, and the I-shaped block 15 can be impacted, the comparison ball can be ejected under the action of the elastic sheet 20, the spring 27 is compressed, the reference ball fixed by the fixing plate III 25 is released from the same height to perform free falling motion, a plurality of flat throwing motions with the same height and different initial speeds can be compared with the free falling motion with the same height, the characteristic of vertical movement of the flat throwing motion is explored, the level meter I2 is placed at the horizontal end of the flat throwing track 9, the butterfly screw III 12 is rotated to adjust the flat throwing track 9, the flat throwing track 9 can be adjusted to be in a horizontal state, one butterfly screw III 12 can be limited under the action of the fixing plate I8, the other butterfly screw III 12 can be limited under the action of the wood block III 28, so the butterfly screw III 12 can be screwed or unscrewed only by rotating the butterfly screw III 12 on the front surface of the L-shaped support plate 4, the butterfly screw II 7 is rotated to adjust the transparent track 6, so that the transparent track 6 is in a horizontal state, meanwhile, under the action of the electromagnet 10, the pellets with iron cores in the horizontal throwing track 9 can be adsorbed, the reference pellets and the contrast pellets are respectively placed in the middle of the horizontal throwing track 9, the electromagnet 10 is in magnetic disappearance through closing the power switch 11, a plurality of pellets with iron cores can fall down from different heights respectively, a plurality of pellets falling from different heights can be subjected to horizontal throwing motion and horizontal uniform linear motion contrast at the same initial speed, the characteristics of horizontal throwing motion are explored, and meanwhile, the horizontal throwing tracks 9 which are mutually staggered can avoid the mutual influence of collision of the pellets.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims (7)

1. The utility model provides a many globules contrast's level throw demonstrates appearance, includes bottom plate (1), its characterized in that: the utility model is characterized in that a level meter I (2) is arranged at the top of the bottom plate (1), a butterfly screw I (3) is fixedly connected with the middle part of the bottom plate (1), an L-shaped support plate (4) is fixedly connected with the top left side of the top of the bottom plate (1), a connecting plate (14) is fixedly connected with the left side of the front top of the L-shaped support plate (4), a pendulum bob (13) is rotationally connected with the middle part of the connecting plate (14), an I-shaped block (15) is fixedly connected with the top of the L-shaped support plate (4), the pendulum bob (13) is contacted with the I-shaped block (15), a fixing plate II (19) is fixedly connected with the top of the I-shaped block (15), a spring piece (20) is fixedly connected with the middle part of the I-shaped block (15), a pulley (16) is fixedly connected with the bottom left side of the I-shaped block (15), a right-angle fixing device (24) is fixedly connected with the right side of the bottom of the I-shaped block (15), a right-angle fixing plate II (21) is fixedly connected with a butterfly screw IV (23), a right-angle fixing plate II (27) is fixedly connected with the bottom of the I-shaped block (15), a second spring II (27) is fixedly connected with the right-shaped block (27), the four fixed plates (26) are fixedly connected to the right side of the top of the L-shaped support plate (4), the first platform (17) is connected to the bottom of the pulley (16) in a sliding mode, the first platform (17) is fixedly connected to the top of the L-shaped support plate (4), the cross beam (18) is fixedly connected to the outer side of the first platform (17), the third fixed plate (25) is fixedly connected to the other side of the cross beam (18), and the third fixed plate (25) is fixedly connected to the right side of the top of the L-shaped support plate (4).

2. The multi-ball contrast level-casting demonstration instrument according to claim 1, wherein: the utility model discloses a butterfly screw three-dimensional support structure for the solar cell module, including L type mounting panel (4), fixed plate (8), flat throwing track (9) are installed to the rear side fixedly connected with wood piece five (28) of L type mounting panel (4), the front side fixedly connected with fixed plate one (8) of L type mounting panel (4), fixed plate one (8), flat throwing track (9) and wood piece five (28), the front side fixedly connected with transparent track (6) of L type mounting panel (4), the equal threaded connection in middle part of L type mounting panel (4) and transparent track (6) has butterfly screw two (7), the middle part fixedly connected with electro-magnet (10) of flat throwing track (9), the rear side fixedly connected with switch (11).

3. The multi-ball contrast level-casting demonstration instrument according to claim 2, wherein: and the front side of the L-shaped support plate (4) is fixedly connected with check paper (5).

4. The multi-ball contrast level-casting demonstration instrument according to claim 2, wherein: one end of the horizontal throwing track (9) is an arc-shaped end, and the other end of the horizontal throwing track (9) is a horizontal end.

5. The multi-ball contrast level-casting demonstration instrument according to claim 2, wherein: the first fixing plates (8) and the flat throwing tracks (9) are provided with a plurality of fixing plates, and the lengths of the first fixing plates (8) are different.

6. The multi-ball contrast level-casting demonstration instrument according to claim 1, wherein: the bottom of the second platform (21) is provided with a groove, and the groove and the elastic sheet (20) are in a horizontal state.

7. The multi-ball contrast level-casting demonstration instrument according to claim 1, wherein: the elastic pieces (20) are provided with a plurality of elastic pieces, and the materials of the elastic pieces (20) are different.