A mechanical motion visualization teaching aid based on magnetic trajectory recording

Abstract

This utility model belongs to the field of teaching aids, specifically relating to a mechanical motion visualization teaching aid based on magnetic trajectory recording. It includes a magnetic drawing board and an electromagnetic cart. The electromagnetic cart is placed on the upper surface of the magnetic drawing board. Hollow legs are fixedly connected to the four corners of the lower surface of the magnetic drawing board. An inclined block is slidably connected inside each hollow leg. A sliding rod is fixedly connected to the bottom of each inclined block, penetrating the bottom of the hollow leg and slidably connected to it. A foot is fixedly connected to the end of the sliding rod, and a spring is sleeved on the outer side of the rod. This utility model, by combining the magnetic drawing board and the electromagnetic cart, creatively breaks through the limitations of traditional teaching aids with fragmented functions, achieving real-time synchronization of motion trajectory and image recording.

Description

Technical Field

[0001] This utility model relates to the field of teaching aids technology, specifically a mechanical motion visualization teaching aid based on magnetic trajectory recording. Background Technology

[0002] In physics teaching, especially in mechanics, ticker timers combined with paper tapes or air tracks are traditionally used to study the laws of motion. While intuitive, these methods often suffer from cumbersome operation, invisible trajectories, or complex equipment adjustments. Existing simple kinematic teaching aids often fail to display motion trajectories clearly and consistently, or struggle to precisely control the movement patterns of the carts (e.g., uniform speed, uniform acceleration), resulting in unsatisfactory experimental demonstrations. This creates a disconnect between experimental phenomena and theoretical diagrams in mechanics teaching, hindering students' immediate observation and understanding of core physical concepts. Therefore, a user-friendly, intuitive teaching tool is needed that can generate and display clear motion trajectories in real time and flexibly demonstrate different motion patterns. Utility Model Content

[0003] The purpose of this invention is to provide a mechanical motion visualization teaching tool based on magnetic trajectory recording, which solves the problem that the experimental phenomena and theoretical images of existing mechanical teaching tools are disconnected.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a mechanical motion visualization teaching aid based on magnetic trajectory recording, comprising a magnetic drawing board and an electromagnetic cart. The surface of the magnetic drawing board is coated with a high-sensitivity magnetic coating. The electromagnetic cart is equipped with an on / off switch, a constant speed switch, and a constant acceleration switch for different speeds. The interior of the electromagnetic cart contains a battery, a main control chip, and an electromagnet. The electromagnet is controlled by the on / off switch, the constant speed switch, and the constant acceleration switch. The electromagnet, in conjunction with the high-sensitivity magnetic coating on the surface of the magnetic drawing board, can produce images of dots, lines, or line segments on the magnetic drawing board. An electromagnetic trolley is placed on the upper surface of a magnetic drawing board. Hollow legs are fixedly connected to the four corners of the lower surface of the magnetic drawing board. An inclined block is slidably connected inside each hollow leg. A sliding rod is fixedly connected to the bottom of the inclined block. The sliding rod passes through the bottom of the hollow leg and is slidably connected to the hollow leg. A pad is fixedly connected to the end of the sliding rod. A spring is sleeved on the outside of the sliding rod. A threaded rod is threadedly connected to the side wall of the hollow leg. The threaded rod passes through the hollow leg. A ball head is fixedly connected to one end of the threaded rod inside the hollow leg. The ball head is slidably connected to the inclined surface of the inclined block.

[0005] Preferably, a baffle is fixedly connected to the right side of the upper surface of the magnetic drawing board, and the baffle is U-shaped. The baffle is used to limit the travel distance of the electromagnetic trolley.

[0006] Preferably, the magnetic drawing board is provided with a bubble level on its side. The bubble level can be used to adjust the entire board to a horizontal position.

[0007] Preferably, one end of the spring is fixedly connected to the bottom of the inclined block, and the other end of the spring is fixedly connected to the inner surface of the hollow support leg. The reaction force of the spring can act on the threaded joint of the threaded rod through the inclined block, thus providing a certain anti-loosening effect.

[0008] Preferably, a knob is fixedly connected to one end of the threaded rod located outside the hollow support leg, and the knob is made of plastic. The knob makes it easy for the user to turn the threaded rod.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model creatively breaks through the limitations of traditional teaching aids by combining a magnetic drawing board with an electromagnetic cart, achieving real-time synchronization of motion trajectory and image recording. The magnetic drawing board uses a high-sensitivity magnetic coating, and the electromagnetic cart is equipped with a controllable magnetic electromagnet at its bottom. Students can control the cart's movement by adjusting its driving parameters. As the electromagnetic cart moves, the electromagnet dynamically draws points and line segments on the drawing board. This design directly transforms abstract mechanical motion laws into intuitive and visible line segments, completely solving the problem of the disconnect between experimental phenomena and theoretical images in traditional teaching. It helps students quickly establish a connection between physical motion and mathematical modeling, significantly improving the efficiency and effectiveness of teaching mechanical laws.

[0010] 2. This utility model teaching aid adopts a leveling structure consisting of hollow support legs, inclined blocks, threaded rods, and springs, enabling rapid horizontal adjustment of the magnetic drawing board. Specifically, rotating the knob drives the threaded rod, which in turn moves the inclined blocks up and down the sliding rod, allowing for flexible adjustment of the height of each support leg. Combined with a bubble level, this ensures the drawing board is precisely level, guaranteeing the stability of the experimental environment. Attached Figure Description

[0011] Figure 1 This is a perspective view of the overall structure of this utility model; Figure 2 This utility model Figure 1 A partial structural front sectional view; Figure 3 This utility model Figure 2 Enlarged view of point A.

[0012] In the diagram: 1. Magnetic drawing board; 2. Electromagnetic trolley; 4. Baffle; 5. Bubble level; 6. Hollow support leg; 7. Inclined block; 8. Sliding rod; 9. Foot pad; 10. Spring; 11. Threaded rod; 12. Ball head; 13. Knob. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figure 1 , Figure 2 , Figure 3 A mechanical motion visualization teaching tool based on magnetic trajectory recording includes a magnetic drawing board 1 and an electromagnetic cart 2. The surface of the magnetic drawing board 1 is coated with a high-sensitivity magnetic coating. The electromagnetic cart 2 is equipped with an on / off switch, a constant speed switch, and a constant acceleration switch for different speeds. The electromagnetic cart 2 contains a battery, a main control chip, and an electromagnet. The electromagnet is controlled by the on / off switch, the constant speed switch, and the constant acceleration switch. The electromagnet, in conjunction with the high-sensitivity magnetic coating on the surface of the magnetic drawing board 1, can produce images of dots, lines, or line segments on the magnetic drawing board 1. The electromagnetic cart 2 is placed on the upper surface of the magnetic drawing board 1.

[0015] Please see Figure 1 , Figure 2 , Figure 3 Hollow legs 6 are fixedly connected to the four corners of the lower surface of the magnetic drawing board 1. An inclined block 7 is slidably connected inside each hollow leg 6. A sliding rod 8 is fixedly connected to the bottom of the inclined block 7, passing through the bottom of the hollow leg 6 and slidably connected to it. A pad 9 is fixedly connected to the end of the sliding rod 8. A spring 10 is sleeved on the outside of the sliding rod 8. One end of the spring 10 is fixedly connected to the bottom of the inclined block 7, and the other end is fixedly connected to the inner surface of the hollow leg 6. The reaction force of the spring 10 can act on the threaded joint of the threaded rod 11 through the inclined block 7, providing a certain anti-loosening effect. The side wall of the hollow leg 6 is threadedly connected to the threaded rod 11, which passes through the hollow leg 6. A ball head 12 is fixedly connected to one end of the threaded rod 11 inside the hollow leg 6, and the ball head 12 is slidably connected to the inclined surface of the inclined block 7. A knob 13 is fixedly connected to one end of the threaded rod 11 located outside the hollow support leg 6, and the knob 13 is made of plastic. The knob 13 makes it easy for the user to turn the threaded rod 11.

[0016] Please see Figure 1 , Figure 2 A baffle 4, which is U-shaped, is fixedly connected to the right side of the upper surface of the magnetic drawing board 1. The baffle 4 is used to limit the travel distance of the electromagnetic trolley 2. A bubble level 5 is provided on the side of the magnetic drawing board 1. The bubble level 5 can be used to adjust the entire board to a horizontal position.

[0017] The specific implementation process of this utility model is as follows: First, place the whole on the table, and then drive the threaded rod 11 to rotate inward by the knob 13. The ball head 12 at the front end of the threaded rod 11 pushes the inclined surface of the inclined block 7, converting the horizontal rotational motion into the downward linear motion of the inclined block 7 and the slide rod 8. The pad 9 at the end of the slide rod 8 is pushed out, thereby raising the height of this side. Then observe the bubble level 5 until the whole is in a horizontal state. Then, place the electromagnetic cart 2 at the starting position on the left side of the magnetic drawing board 1. Depending on the experimental requirements, press the corresponding constant speed switch or constant acceleration switch on the electromagnetic cart 2, and then start the cart. Its internal main control chip will precisely control the current of the electromagnet according to the selected mode, causing it to generate a specific regular magnetic field. When the cart moves, the electromagnet's magnetic field magnetizes the highly sensitive magnetic coating on the surface of the magnetic drawing board 1 below. In constant speed mode, it will leave dotted or short line segments with equal spacing on the coating, visually indicating that equal displacement is traversed in the same amount of time. In constant acceleration mode, it will leave a trajectory with gradually increasing dot or line segment spacing on the coating, visually showing that the speed increases uniformly over time. The cart finally stops after contacting the U-shaped baffle 4 on the right. A complete motion trajectory is permanently preserved on the drawing board for all students to observe, measure, and analyze.

[0018] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mechanical motion visualization teaching aid based on magnetic trajectory recording, comprising a magnetic drawing board (1) and an electromagnetic trolley (2), wherein the electromagnetic trolley (2) is placed on the upper surface of the magnetic drawing board (1), characterized in that: The four corners of the lower surface of the magnetic drawing board (1) are each fixedly connected with a hollow leg (6), the interior of each said hollow leg (6) is slidably connected with a slope block (7), the bottom of said slope block (7) is fixedly connected with a slide rod (8), said slide rod (8) penetrates through the bottom of the hollow leg (6) and is slidably connected with the hollow leg (6), the tail end of said slide rod (8) is fixedly connected with a foot pad (9), the outer side of the rod body of said slide rod (8) is sleeved with a spring (10), the side wall of said hollow leg (6) is connected with a threaded rod (11) through threads, and the threaded rod (11) is arranged to penetrate through the hollow leg (6), the end of said threaded rod (11) located inside the hollow leg (6) is fixedly connected with a ball head (12), and said ball head (12) is in sliding connection with the slope portion of the slope block (7).

2. The mechanical motion visualization teaching aid based on magnetic trajectory recording according to claim 1, characterized in that: The right side of the upper surface of the magnetic drawing board (1) is fixedly connected with a baffle (4), and the baffle (4) is of a U-shape.

3. The mechanical motion visualization teaching aid based on magnetic trajectory recording according to claim 1, characterized in that: The side edge of the magnetic drawing board (1) is provided with a bubble level (5).

4. The mechanical motion visualization teaching aid based on magnetic trajectory recording according to claim 1, characterized in that: One end of the spring (10) is fixedly connected with the bottom of the slope block (7), and the other end of said spring (10) is fixedly connected to the inner surface of the hollow leg (6).

5. The mechanical motion visualization teaching aid based on magnetic trajectory recording according to claim 1, characterized in that: The end of the threaded rod (11) located outside the hollow leg (6) is fixedly connected with a knob (13), and the knob (13) is made of plastic material.

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