Desk type multi-simple-pendulum physical period demonstration instrument

Abstract

The utility model relates to a desk type multi-simple-pendulum physical cycle demonstration instrument, belonging to the teaching demonstration equipment technical field, the desk type multi-simple-pendulum physical cycle demonstration instrument comprises a main body frame, a push plate, adjusting devices and pendulum balls, the push plate is arranged at the bottom of the main body frame, the plurality of adjusting devices are uniformly arranged at the top of the main body frame along the transverse direction at intervals, and the pendulum balls are arranged on the push plate. By adopting the structure, the pendulum length of each pendulum ball is accurately adjusted through the adjusting devices, and then the push plate is used for driving all the pendulum balls to synchronously start simple pendulum motion, so that the relationship between the simple pendulum period and the pendulum length can be intuitively understood; and the interaction and periodic change of the multi-simple-pendulum system in the swinging process provide powerful support for physics teaching, and the teaching quality and the learning effect of students are improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of teaching demonstration equipment, and specifically relates to a desktop multi-pendulum physical period demonstrator. Background Technology

[0002] In physics teaching, the periodicity of pendulum oscillation is fundamental to understanding mechanical vibration and wave phenomena. Students need to have a deep understanding of the relationship between the period and length of a pendulum, as well as the motion characteristics of multiple pendulum systems. However, traditional pendulum demonstration devices have many limitations; most devices can only demonstrate the motion of a single pendulum, making it difficult to show the complex interactions and periodic changes of multiple pendulums due to their different lengths.

[0003] Existing multi-pendulum demonstration devices perform poorly in terms of pendulum length adjustment accuracy, pendulum bob motion stability, and overall demonstration effect. For example, the pendulum length adjustment method is not precise enough to meet the teaching needs of accurately setting the pendulum length to demonstrate specific period differences; the pendulum bob is easily disturbed during motion, leading to unstable oscillations and making it difficult to accurately represent the periodicity of pendulum oscillation; furthermore, the structural design of the demonstration device is not reasonable enough, affecting students' observation and understanding of pendulum motion. These problems limit the teaching effectiveness and hinder students' in-depth learning and mastery of physics knowledge.

[0004] Therefore, there is an urgent need for a desktop multi-pendulum physical period demonstrator that can precisely adjust the pendulum length, provide stable pendulum demonstrations, and is easy to operate. Utility Model Content

[0005] This invention provides a desktop multi-pendulum physical period demonstrator to solve the technical problems of existing pendulum demonstrators being unable to accurately adjust the pendulum length and having poor demonstration effects.

[0006] This utility model is achieved through the following technical solution: a tabletop multi-pendulum physical period demonstrator, including a main frame, a push plate, an adjustment device and a pendulum ball, wherein the push plate is disposed at the bottom of the main frame, and multiple adjustment devices are evenly and spaced apart along the horizontal direction at the top of the main frame, and each adjustment device is connected to a pendulum ball through a pendulum line.

[0007] To better realize this utility model, further optimizations are made to the above structure. The main frame includes a base, a top plate, and upright plates. Two upright plates are vertically fixed at both ends of the base. Two top plates are parallel and spaced apart and connected to the tops of the two upright plates. The adjustment device is connected between the two top plates.

[0008] To better realize this utility model, further optimizations are made to the above structure. The adjustment device includes a rotating shaft, a knob, and a limiting head. The rotating shaft is rotatably inserted between the two top plates and its two ends extend out of the outer side of the top plates. The knob and the limiting head are respectively fixed at both ends of the rotating shaft. Both ends of the cycloid are fixedly wound on the rotating shaft, and the cycloid ball is connected to the middle of the cycloid.

[0009] To better realize this utility model, the above structure is further optimized, and the top plate is an arc-shaped plate.

[0010] To better realize this utility model, the above structure is further optimized. Two support columns are provided below the rotating shaft. The support columns are connected between the two top plates. The two ends of the cycloid pass around the outside of the two support columns respectively.

[0011] To better realize this utility model, the above structure is further optimized by providing a connecting seat at the top of the pendulum ball, and the pendulum line is threaded through the connecting seat.

[0012] To better realize this utility model, the above structure is further optimized, and the pendulum ball is a resin ball.

[0013] To better realize this utility model, the above structure is further optimized. The push plate is an L-shaped plate composed of a horizontal plate and a vertical plate, and the height of the vertical plate is greater than the height of the pendulum ball.

[0014] To better realize this utility model, the above structure is further optimized by providing an anti-slip pad on the side of the vertical plate facing the pendulum ball.

[0015] To better realize this utility model, the above structure is further optimized by including guide rails. The two guide rails are respectively disposed on the base near the two upright plates, and the horizontal plate is slidably connected to the guide rails.

[0016] Compared with the prior art, this utility model has the following advantages:

[0017] This utility model provides a desktop multi-pendulum physics period demonstrator, comprising a main frame, a push plate, adjustment devices, and pendulum balls. The push plate is located at the bottom of the main frame, and multiple adjustment devices are evenly spaced and arranged at intervals along the horizontal direction at the top of the main frame. Each adjustment device is connected to a pendulum ball via a pendulum string. Using this structure, the pendulum length of each pendulum ball can be precisely adjusted through the adjustment devices, and then the push plate is used to drive all pendulum balls to start pendulum motion synchronously. This allows for an intuitive understanding of the relationship between the pendulum period and the pendulum length, as well as the interaction and periodic changes of the multi-pendulum system during the oscillation process. This provides strong support for physics teaching, improves teaching quality and student learning outcomes, and enhances the practicality of this utility model. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a front view of the desktop multi-pendulum physical period demonstrator of this utility model;

[0020] Figure 2 This is a front view of the connection between the adjusting device and the pendulum ball;

[0021] Figure 3 This is a side view of the connection between the adjusting device and the pendulum ball.

[0022] In the picture:

[0023] 1-Push plate; 2-Adjusting device; 3-Pendulum ball; 4-Pendulum line; 5-Base; 6-Top plate; 7-Upright plate; 8-Rotating shaft; 9-Knob; 10-Limit head; 11-Support column; 12-Connecting seat; 13-Guide rail. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Example 1:

[0028] In this embodiment, a desktop multi-pendulum physical period demonstrator, such as... Figures 1 to 3 As shown, it includes a main frame, a pusher plate 1, an adjustment device 2, and pendulum balls 3. Specifically, the pusher plate 1 is located at the bottom of the main frame and is used to simultaneously push all the pendulum balls 3, so that all the pendulum balls 3 start pendulum motion at the same time. Multiple adjustment devices 2 are evenly and spaced apart in the horizontal direction at the top of the main frame. Each adjustment device 2 is connected to a pendulum ball 3 through a pendulum line 4 and is used to adjust the pendulum length of each pendulum.

[0029] By adopting this structure, the pendulum length of each pendulum ball 3 can be precisely adjusted through the adjustment device 2, and then the pusher plate 1 can be used to drive all the pendulum balls 3 to start pendulum motion synchronously. This allows for an intuitive understanding of the relationship between the pendulum period and the pendulum length, as well as the interaction and periodic changes of multiple pendulum systems during the oscillation process. This provides strong support for physics teaching, improves teaching quality and students' learning outcomes, and makes this utility model more practical.

[0030] As one specific implementation method of this embodiment, such as Figure 1As shown, the main frame includes a base 5, a top plate 6, and a vertical plate 7. The base 5, top plate 6, and vertical plate 7 are all transparent structural components made of acrylic material. The transparent structure facilitates clear observation of the pendulum's motion trajectory in all directions. Specifically, two vertical plates 7 are vertically fixed at both ends of the base 5, and two top plates 6 are parallel and spaced apart at the tops of the two vertical plates 7. The adjustment device 2 is connected between the two top plates 6, and the space between the two top plates 6 is used for the pendulum line 4 to pass through. The base 5, top plate 6, and vertical plate 7 are detachably connected by a slot connection. A right-angle plate can be set at the connection between the base 5 and the vertical plate 7 to limit the verticality of the vertical plate 7 and prevent it from tilting.

[0031] In this embodiment, as Figure 2 and Figure 3 As shown, the adjustment device 2 includes a rotating shaft 8, a knob 9, and a limiting head 10. The rotating shaft 8 is rotatably inserted between the two top plates 6, with both ends extending outwards from the outside of the top plates 6. The knob 9 and the limiting head 10 are fixed to both ends of the rotating shaft 8, respectively, and serve to limit the rotation of the rotating shaft 8. The knob 9 is used to manually rotate the rotating shaft 8. Both ends of the pendulum 4 are fixedly wound around the rotating shaft 8, and the pendulum ball 3 is connected to the middle of the pendulum 4. In use, the knob 9 is turned by hand to rotate the rotating shaft 8, so that the two ends of the pendulum 4 are wound around the rotating shaft 8 one turn at a time or the pendulum 4 is released, thereby changing the pendulum length of the pendulum 4 and adjusting the suspension height of the pendulum ball 3 so that all the pendulum balls 3 are at the same horizontal height. As an optimization, the top plate 6 is an arc plate, so that the pendulum 4 length of each pendulum ball 3 is different, thereby demonstrating the relationship between the oscillation period of a single pendulum and the pendulum length.

[0032] As an optimization, the knob 9 is equipped with scale lines, which allows for quantification of the adjustment length of the pendulum 4, enabling more precise adjustment of the pendulum length.

[0033] In this embodiment, as Figure 2 and Figure 3 As shown, two support columns 11 are provided below the aforementioned rotating shaft 8. The support columns 11 are connected between the two aforementioned top plates 6. The two ends of the aforementioned pendulum 4 pass around the outside of the two aforementioned support columns 11 respectively. The two aforementioned support columns 11 make the two ends of the aforementioned pendulum 4 and the aforementioned pendulum ball 3 at the bottom form a stable triangular structure, so that the aforementioned pendulum ball 3 will only swing back and forth and will not move sideways, ensuring that the single pendulum motion of all the aforementioned pendulum balls 3 will not affect or interfere with each other, thereby achieving a good demonstration effect.

[0034] In this embodiment, as Figure 2 and Figure 3As shown, the top of the pendulum ball 3 is provided with a connecting seat 12, and the pendulum line 4 is threaded through the connecting seat 12. The connecting seat 12 and the pendulum ball 3 are an integral structure. The connecting seat 12 is provided with a through hole, and the pendulum line 4 passes through the through hole to ensure that the pendulum ball 3 is always at the lowest point of the pendulum line 4. The pendulum ball 3 is preferably a resin ball, which has high strength, good toughness, uniform mass, and smooth surface, and can effectively reduce the influence of air resistance on the pendulum motion, ensuring the stability and regularity of the pendulum during the swing process.

[0035] In this embodiment, as Figure 1 As shown, the push plate 1 is an L-shaped plate composed of a horizontal plate and a vertical plate. The height of the vertical plate is greater than the height of the pendulum 3. All the pendulum 3 contact the vertical plate at the same time, pushing the push plate 1, causing the vertical plate to push all the pendulum 3 to move 10° in the same direction. Then the push plate 1 is removed, causing all the pendulum 3 to be released at the same time. Since the pendulum length of each pendulum is different, the oscillation period is also different. As time goes by, the relative positions of the pendulum 3 will change in a regular way.

[0036] As an optimization, the vertical plate is provided with an anti-slip pad on the side facing the pendulum ball 3. The anti-slip pad is used to increase the friction between the vertical plate and the pendulum ball 3, so as to prevent the pendulum ball 3 from changing position due to sliding when the push plate 1 pushes the pendulum ball 3, which would cause the pendulum motion to be distorted.

[0037] In this embodiment, as Figure 1 As shown, it also includes guide rails 13. Two guide rails 13 are respectively disposed on the base 5 near the two upright plates 7. The horizontal plate is slidably connected to the guide rails 13. The guide rails 13 guide the push plate 1 to move, ensuring that the push plate 1 moves smoothly, thereby pushing all the pendulum balls 3 to move synchronously.

[0038] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A table-top multi-pendulum physical period demonstrator, characterized in that: Including main body frame, push plate (1), adjusting device (2) and pendulum ball (3), the push plate (1) is arranged at the bottom of the main body frame, a plurality of adjusting devices (2) are evenly and spaced apart arranged on the top of the main body frame along the transverse direction, each adjusting device (2) is connected with a pendulum ball (3) through a cycloid (4).

2. The table-top multi-pendulum physical period demonstration instrument according to claim 1, characterized in that: The main body frame includes a base (5), a top plate (6) and a vertical plate (7), two vertical plates (7) are fixed perpendicularly on both ends of the base (5), and two top plates (6) are connected in parallel and spaced apart on the top ends of the two vertical plates (7), and the adjusting device (2) is connected between the two top plates (6).

3. A table-top multi-pendulum physical period demonstration instrument according to claim 2, characterized in that: The adjusting device (2) includes a rotating shaft (8), a knob (9) and a limiting head (10), the rotating shaft (8) is rotatably inserted between the two top plates (6) and extends out of the top plate (6) on both sides, the knob (9) and the limiting head (10) are fixed on both ends of the rotating shaft (8), both ends of the cycloid (4) are fixed and wound on the rotating shaft (8), and the pendulum ball (3) is connected to the middle part of the cycloid (4).

4. The table-top multi-pendulum physical period demonstration instrument according to claim 3, characterized in that: The top plate (6) is an arc-shaped plate.

5. A table-top multi-pendulum physical period demonstration instrument according to claim 3, characterized in that: Two support columns (11) are arranged below the rotating shaft (8), the support columns (11) are connected between the two top plates (6), and both ends of the cycloid (4) pass around the outer sides of the two support columns (11).

6. The table-top multi-pendulum physical period demonstration instrument according to claim 3, characterized in that: The top end of the pendulum ball (3) is provided with a connecting seat (12), and the cycloid (4) is connected to the connecting seat (12).

7. A table-top multi-pendulum physical period demonstration instrument according to claim 6, characterized in that: The pendulum ball (3) is a resin ball.

8. The table-top multi-pendulum physical period demonstration instrument according to claim 2, characterized in that: The push plate (1) is an L-shaped plate composed of a horizontal plate and a vertical plate, and the height of the vertical plate is greater than the height of the pendulum ball (3).

9. A table-top multi-pendulum physical period demonstration instrument according to claim 8, characterized in that: The side of the vertical plate facing the pendulum ball (3) is provided with a non-slip pad.

10. The table-top multi-pendulum physical period demonstration instrument according to claim 8, characterized in that: Two guide rails (13) are arranged on the base (5) near the two vertical plates (7), and the horizontal plate is slidingly connected to the guide rails (13).

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