CN212181744U

CN212181744U - Newton first law demonstration device

Info

Publication number: CN212181744U
Application number: CN202020945015.6U
Authority: CN
Inventors: 王家伟; 何健; 张中
Original assignee: Hefei Andakerun Education Co ltd
Current assignee: Hefei Andakerun Education Co ltd
Priority date: 2020-05-28
Filing date: 2020-05-28
Publication date: 2020-12-18
Anticipated expiration: 2030-05-28

Abstract

The utility model discloses a Newton's first law demonstration device, which relates to the technical field of teaching aids, comprising a display stand, wherein a trolley mechanism and a linear motion mechanism for driving the trolley mechanism to move are arranged on the display stand, the trolley mechanism comprises an ejection mechanism and a ball falling groove, the fixed end of the ejection mechanism is fixedly connected with the linear motion mechanism, the ejection end is abutted with a small ball in the ball falling groove at a certain distance, the linear motion mechanism comprises a cylinder and a linear module fixed on the display stand, the trolley mechanism is arranged on the linear module and is fixedly connected with a slider on the linear module, and the output end of the cylinder is connected with the trolley mechanism; the small balls continue to move at a constant speed after being ejected by the ejection mechanism, fall under the action of gravity and fall into the ball falling groove, so that the small balls continue to move along the original movement direction due to inertia when being ejected out of the air, and then fall into the ball falling groove, and the visual demonstration of the first Newton law is realized.

Description

Newton first law demonstration device

Technical Field

The utility model relates to a teaching aid technical field especially relates to first law presentation device of newton.

Background

Newton's first law is an important learning content in physical lessons, and teachers often need experimental demonstration in order to make students understand Newton's first law. And at present, a special Newton first law demonstration instrument is not available during teaching, and demonstration equipment which can be operated by students is also lacking, so that the students can understand the Newton first law conveniently.

SUMMERY OF THE UTILITY MODEL

Based on the technical problem that the background art exists, the utility model provides a first law of newton presentation device, mechanized realization to the first law of newton's directly perceived demonstration.

The utility model provides a first law presentation device of newton, including the stand, be provided with the linear motion mechanism of dolly mechanism and being used for driving dolly mechanism motion on the stand, dolly mechanism includes ejection mechanism and ball groove that falls, ejection mechanism's stiff end and linear motion mechanism fixed connection, ejection end and the bobble interval certain distance butt in the ball groove that falls.

Further, the linear motion mechanism comprises a linear module fixed on the exhibition stand, and the trolley mechanism is arranged on the linear module and fixedly connected with a sliding block on the linear module.

Furthermore, the trolley mechanism further comprises a mounting plate, a first support frame arranged on the mounting plate and a second support frame arranged on the first support frame, the ball falling groove is fixed on the second support frame, and the linear module penetrates through a fixed gap between the first support frame and the second support frame.

Furthermore, a leveling frame used for adjusting the running balance degree of the trolley mechanism is arranged below the trolley mechanism, and the leveling frame comprises a leveling bolt used for adjusting the balance degree of the mounting plate and a third supporting frame fixedly connected with the leveling bolt.

Furthermore, the inner surface of the ball falling groove is parabolic, and a baffle is annularly arranged at the ball falling opening of the ball falling groove.

Furthermore, an arch door is further arranged on the exhibition stand, two ends of the arch door stretch across the linear motion mechanism and are fixed on the exhibition stand, and the arch door and the linear motion mechanism form a channel for the trolley mechanism to run.

Furthermore, a level meter or an inclination angle sensor is arranged on the trolley mechanism, a protective cover is arranged on the outer side of the trolley mechanism, and the protective cover is fixedly connected with the upper surface of the exhibition stand.

Furthermore, an annular protection plate is arranged on the outer side of the ejection mechanism.

The utility model provides a first law presentation device of newton's advantage lies in: the utility model discloses the first law presentation device of newton that provides in the structure, dolly mechanism continue the uniform motion after the bobble is ejected through ejection mechanism, and the bobble falls and falls in the ball groove under the action of gravity, and the bobble that has demonstrated directly perceivedly is because inertia, when being ejected aloft, will continue to move along original direction of motion, and then fall in the ball groove, has realized the first law of newton's direct-viewing demonstration; the inner surface of the ball falling groove is parabolic, and meanwhile, the baffle is annularly arranged at the ball falling opening of the ball falling groove, so that the defect that small balls rebound out of the ball falling groove is reduced, and the accurate and effective demonstration of the inertia law is improved.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the vehicle mechanism and the arch;

FIG. 3 is a schematic diagram of the movement of the carriage mechanism;

FIG. 4 is a schematic structural view of the carriage mechanism;

the device comprises a display table 1, a trolley mechanism 2, a linear motion mechanism 3, a small ball 4, a leveling frame 5, an arch door 6, a protective cover 7, an ejection mechanism 21, a ball falling groove 22, a mounting plate 23, a first support frame 24, a second support frame 25, a protection plate 26, a linear module 31, a leveling bolt 51 and a third support frame 52.

Detailed Description

The technical solutions of the present invention are explained in detail below with reference to specific embodiments, and many specific details are set forth in the following description to provide a thorough understanding of the present invention. The present invention can be embodied in many other forms than those specifically described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit and scope of the invention.

As shown in fig. 1 to 4, the utility model provides a newton's first law presentation device, including stand 1, be provided with trolley mechanism 2 on the stand 1 and be used for driving trolley mechanism 2 linear motion mechanism 3 of motion, trolley mechanism 2 includes ejection mechanism 21 and ball groove 22 that falls, ejection mechanism 21's stiff end and 3 fixed connection of linear motion mechanism, ejection end and the 4 intervals butt of bobble in the ball groove 22 that fall.

After the small balls 4 are ejected by the ejection mechanism 21, the trolley mechanism 2 continues to move at a constant speed, the small balls 4 fall under the action of gravity and fall into the ball falling groove 22, so that the small balls 4 can continue to move along the original movement direction due to inertia when being ejected out of the air, and then fall into the ball falling groove 22, and the visual demonstration of the first Newton law is realized. The ejection end of the ejection mechanism 21 is arranged at a certain distance from the small ball 4, so that the small ball can be effectively ejected; in the effective stroke of the ejection end of the ejection mechanism 21, the larger the interval distance is, the better the ejection effect is, because the distance is large, the speed is high, and the impact force is large.

In this application, bobble 4 can adopt 304 stainless steel materials to make, and ball groove 22 that falls can adopt the polyurethane material to make, is parabolic face-like at the internal surface of ball groove 22 that falls simultaneously, and the ball mouth department that falls of ball groove 22 is cyclic annular to be provided with the baffle, has avoided the bounce-back phenomenon of bobble 4 in falling ball groove 22, and the baffle can reduce the defect that bobble 4 bounced out ball groove 22 simultaneously, has improved the accuracy and the effective demonstration to the law of inertia.

In order to more vividly demonstrate the law of inertia, an arch door 6 is further arranged on the exhibition stand 1, two ends of the arch door 6 cross the linear motion mechanism 3 and are fixed on the exhibition stand 1, and the arch door 6 and the linear motion mechanism 3 form a channel for the trolley mechanism 2 to run. When the trolley mechanism 2 moves to one side of the arch 6, the linear motion mechanism 3 drives the ejection mechanism 21 to eject the small balls 4 in the ball falling grooves 22, the small balls 4 move above the arch 6 and move to the other side of the arch 6 and fall into the ball falling grooves 22 which move to the other side of the arch 6 at the same time, and therefore the phenomenon that the small balls 4 move along the original movement route under inertia is demonstrated more visually, and the Newton's first law is demonstrated more visually.

Further, linear motion mechanism 3 includes the cylinder and is fixed in the straight line module 31 on the stand 1, dolly mechanism 2 sets up on straight line module 31, and with the slider sliding connection on the straight line module 31, dolly mechanism 2 is driven by straight line module 31 and is realized linear motion, ejection mechanism 21 adopts the cylinder, the cylinder moves along with dolly mechanism 2's motion, pellet 4 is through launching through cylinder drive, make the atress of pellet 4 more stable, and the straightness accuracy of operation is higher, can effectively avoid the defect that the deviation appears in pellet groove 22 that falls of pellet 4. The linear module 31 and the cylinder respectively drive the trolley mechanism 2 and the small ball 4 to do linear motion, so that the effectiveness demonstration of the small ball 4 after being jacked up is realized.

Further, the trolley mechanism 2 further comprises an installation plate 23, a first support frame 24 arranged on the installation plate 23, and a second support frame 25 arranged on the first support frame 24, the ball falling groove 22 is fixed on the second support frame 25, and the linear module 31 penetrates through a fixed gap between the first support frame 24 and the second support frame 25. The second supporting frame 25 is slidably connected to the upper surface of the linear module 31. The straight line module 31 is arranged in a gap formed by the first support frame 24 and the second support frame 25, so that the defect of motion overturning of the trolley mechanism 2 can be effectively overcome, and the demonstration stability and safety of the whole device are improved.

In order to better demonstrate the law of inertia, the trolley mechanism 2 can be set to move at a constant speed on a certain horizontal plane, a leveling frame 5 for adjusting the running balance degree of the trolley mechanism 2 is arranged below the trolley mechanism 2, the leveling frame 5 comprises a leveling bolt 51 for adjusting the balance degree of the mounting plate 23 and a third support frame 52 fixedly connected with the leveling bolt, and a level or an inclination angle sensor is arranged on the trolley mechanism 2.

The gradienter or the inclination angle sensor on the trolley mechanism 2 detects the levelness of the movement of the trolley mechanism 2, and the operation balance degree of the whole trolley mechanism 2 is adjusted by adjusting the leveling bolt 51 so as to realize the effective demonstration of the law of inertia.

In order to improve the security of dolly mechanism 2 in the demonstration process, ejection mechanism 21's the outside is provided with annular guard plate 26, guard plate 26 is opaque, in order to improve the aesthetic property of whole dolly mechanism 2 outward appearance, dolly mechanism 2's the outside is provided with protection casing 7, protection casing 7 is connected with stand 1 upper surface fixed, protection casing 7 is transparent, whole display device on the stand 1 all is covered by protection casing 7, the aesthetic property of whole presentation device outward appearance has been improved on the one hand, on the other hand has also improved the security of demonstration process.

The working process is as follows: dolly mechanism 2 moves on sharp module 31, when moving to arched door 6 one side, linear motion mechanism 3 drive ejection mechanism 21 is ejecting with ball 4 in the ball groove 22 that falls, ball 4 will move in arched door 6 top, and move to arched door 6's opposite side, fall in the ball groove 22 that falls that moves simultaneously to arched door 6 opposite side, accomplish the first demonstration of newton's first law, can be through the shrink motion of circulation cylinder, realize the circulation demonstration to newton's first law.

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

1. Newton's first law presentation device, including stand (1), its characterized in that is provided with dolly mechanism (2) and linear motion mechanism (3) that are used for driving dolly mechanism (2) motion on stand (1), and dolly mechanism (2) include ejection mechanism (21) and ball groove (22) fall, and the stiff end and linear motion mechanism (3) fixed connection, ejection end and ball (4) in the ball groove (22) certain distance butt of interval of ejection mechanism (21).

2. The Newton's first law demonstration device according to claim 1, wherein the linear motion mechanism (3) comprises a linear module (31) fixed on the exhibition stand (1), and the trolley mechanism (2) is arranged on the linear module (31) and is fixedly connected with a sliding block on the linear module (31).

3. The Newton first law demonstration device according to claim 2, wherein the cart mechanism (2) further comprises a mounting plate (23), a first support frame (24) arranged on the mounting plate (23), and a second support frame (25) arranged on the first support frame (24), the ball falling groove (22) is fixed on the second support frame (25), and the straight line module (31) penetrates through a fixed gap between the first support frame (24) and the second support frame (25).

4. The Newton first law demonstration device according to claim 3, wherein a leveling frame (5) for adjusting the running balance degree of the trolley mechanism (2) is arranged below the trolley mechanism (2), and the leveling frame (5) comprises a leveling bolt (51) for adjusting the balance degree of the mounting plate (23) and a third support frame (52) fixedly connected with the leveling bolt.

5. Newton's first law demonstration device according to any one of claims 1 to 4 characterised in that the inner surface of the ball falling groove (22) is parabolic and a baffle is annularly arranged at the ball falling mouth of the ball falling groove (22).

6. The Newton's first law demonstration device according to any one of claims 1 to 4, wherein an arch (6) is further arranged on the exhibition stand (1), two ends of the arch (6) cross the linear motion mechanism (3) and are fixed on the exhibition stand (1), and the arch (6) and the linear motion mechanism (3) form a passage for the trolley mechanism (2) to run.

7. The Newton's first law demonstration device according to any one of claims 1 to 4, wherein a level or an inclination sensor is arranged on the trolley mechanism (2), a protective cover (7) is arranged on the outer side of the trolley mechanism (2), and the protective cover (7) is fixedly connected with the upper surface of the exhibition stand (1).

8. Newton's first law demonstration device according to any one of claims 1 to 4 characterised in that the outer side of the ejection means (21) is provided with an annular protection plate.