Comprehensive experimental instrument for air track

Abstract

The utility model relates to an air cushion guide rail comprehensive experiment instrument, which comprises a supporting assembly, a sensing assembly and a moving assembly, the supporting assembly comprises an air cushion guide rail, the moving assembly comprises a sliding block, the sliding block moves on the air cushion guide rail along the air cushion guide rail, the moving assembly further comprises a magnetic element, the magnetic element is arranged on the sliding block, and the sensing assembly is arranged on the sliding block. The induction assembly comprises induction coils, the number of the induction coils is multiple, the multiple induction coils are arranged along the air cushion guide rail at intervals, and the sliding blocks and the magnetic elements are located in circles of the induction coils. Compared with the prior art, the utility model has the advantages that the experiment result is visual and visible, the research content of the experiment is diversified and the like.

Description

Technical Field

[0001] The utility model relates to a physical teaching experiment device, in particular to an air track comprehensive experiment instrument. Background Technique

[0002] The air track comprehensive experiment instrument is a precision mechanical experiment device, which is widely used in physical teaching and scientific research. Its measurement method mainly uses photoelectric gates to measure the movement time of a trolley, so as to study the movement laws of various objects. The measurement of the movement state of the trolley by the photoelectric gate has poor intuitiveness and the research content of the experiment is single. Content of the Utility Model

[0003] The purpose of the utility model is to provide an air track comprehensive experiment instrument to overcome the defects of poor intuitiveness and single research content existing in the above-mentioned prior art.

[0004] The purpose of the utility model can be realized by the following technical solutions:

[0005] The utility model provides an air track comprehensive experiment instrument, which includes a support component, an induction component and a moving component. The support component includes an air track, the moving component includes a slider, the slider moves along the air track on the air track, the moving component further includes a magnetic element, the magnetic element is installed on the slider, the induction component installation includes induction coils, the number of induction coils is multiple, and they are arranged at intervals along the air track. The slider and the magnetic element are located inside the induction coils.

[0006] Furthermore, the induction component further includes an audio transmission line, a current acquisition module and a display terminal. The current acquisition module is connected to the induction coils, and the audio transmission line is connected to the current acquisition module and the display terminal.

[0007] Even further, the display terminal is equipped with Audition data display and analysis software.

[0008] Further, the induction coils are wound by enameled wires, and different coils have different numbers of turns.

[0009] Further, the support component further includes an air inlet pipe, and the air inlet pipe is located at the end face of the support component.

[0010] Even further, a plurality of small holes are distributed on the air track, and the small holes are communicated with the air inlet pipe.

[0011] Further, the number of induction coils is three, namely induction coil one, induction coil two and induction coil three.

[0012] Further, the cross-section of the air track is a triangle with the pointed end facing upwards, and the bottom shape of the slider matches the upper surface of the air track.

[0013] Further, the support assembly further includes pulleys and buffer members, which are respectively located at both ends of the air track.

[0014] Further, the support assembly further includes a base, which is located at the bottom of the air track.

[0015] Compared with the prior art, the present utility model has the following advantages:

[0016] 1. All the original photoelectric gates on the air track are replaced with induction coils, and magnets are installed on the sliders of the air track. When the sliders equipped with magnets pass through the coils at different speeds, or when the sliders pass through coils with different numbers of turns at the same speed, the induction current acquisition module acquires the generated induction current and visualizes it on the display terminal, intuitively showing the motion state of the sliders in the experiment.

[0017] 2. Using induction coils and the principle of electromagnetic induction as motion sensing, in addition to being used to study the motion state of sliders and study the momentum theorem using collisions, it can also be used for the study and research of phenomena such as electromagnetic induction and magnetic damping.

[0018] 3. By changing the number and turns of the coils, as well as the specifications and numbers of magnetic components, etc., the magnetic field intensity can be flexibly adjusted, improving the flexibility of use of the experimental instrument. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of an integrated experimental instrument for an air track;

[0020] In the figure, 101, base; 102, air track; 103, intake pipe; 104, buffer member; 105, pulley; 201, induction coil one; 202, induction coil two; 203, induction coil three; 204, audio transmission line; 205, current acquisition module; 206, display terminal; 301, slider; 302, magnetic component. Detailed Embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] Such as Figure 1As shown in the figure, this embodiment provides an air cushion guide comprehensive experiment instrument, which includes a support assembly, an induction assembly, and a moving assembly. The support assembly includes a base 101, an air cushion guide 102, an air inlet pipe 103, a buffer member 104, and a pulley 105. The induction assembly includes an induction coil one 201, an induction coil two 202, an induction coil three 203, an audio transmission line 204, a current acquisition module 205, and a display terminal 206. The moving assembly includes a slider 301 and a magnetic element 302.

[0023] The air cushion guide 102 is a long guide rail installed on the base 101, and its cross-section is a triangle with the pointed end facing upward. The bottom surface of the slider 301 matches the upper surface of the air cushion guide 102. The magnetic element 302 is installed above the slider 301, and the slider 301 can slide freely along the air cushion guide 102. In this embodiment, the magnetic element 302 is a magnet. The buffer member 104 and the pulley 105 are respectively arranged at both ends of the air cushion guide 102. In this embodiment, the buffer member 104 can be a buffer spring. The air inlet pipe 103 is located at the end face of the air cushion guide 102 on the side of the buffer spring. The upper surface of the air cushion guide 102 is provided with dense small holes, and the small holes are connected to the air inlet pipe 103 inside the air cushion guide 102.

[0024] The number of induction coils is multiple, and preferably three in this embodiment, namely the induction coil one 201, the induction coil two 202, and the induction coil three 203. The three induction coils are installed at intervals along the air cushion guide 102, so that the slider 301 passes through the inside of the induction coil when sliding on the air cushion guide 102.

[0025] The current acquisition module 205 is connected to the magnetic induction coil, and the audio transmission line 204 connects the current acquisition module 205 and the display terminal 206. As a preferred embodiment, the display terminal 206 can be a signal display or a computer.

[0026] The slider 301 installed with a magnet can slide freely on the air cushion guide 102 under the action of manual operation, gravity under the inclined plane, or the traction rope driven by the pulley 105. At the same time, compressed air is supplied from the air inlet pipe 103 to the air cushion guide 102, and the air sprays out from the small holes on the air cushion guide 102, forming a thin air cushion layer between the slider 301 and the air cushion guide 102 to reduce the friction when the slider 301 slides on the air cushion guide 102. The buffer spring is used to reduce the impact of the slider 301 when it slides to the end of the air cushion guide 102.

[0027] According to the law of electromagnetic induction, when the magnet slides with the slider 301 and passes through the induction coil, an induced current will be generated in the induction coil. The induced current is captured by the current acquisition module and transmitted to the display terminal through the audio data cable. The display terminal equipped with Audition data display and analysis software can display the collected induced current signal in real time, and the experimenter can intuitively observe the movement of the slider on the air track.

[0028] As a preferred embodiment, the induction coil is wound with enameled wire. Different coils have different numbers of turns, and the ratio of their numbers of turns is 1:2:3:...n (it can be other proportional relationships), and they are connected in series with each other.

[0029] As a preferred embodiment, the magnitude of the magnetic field can be changed by changing the specifications and quantities of the magnets.

[0030] This utility model combines the electromagnetic induction phenomenon and Newton's laws of motion. It can not only study uniform linear motion and collision experiments, but also demonstrate experimental phenomena such as electromagnetic induction and magnetic damping, thus expanding the scope of application of the air track and providing some inspiration for the functional development and innovation of basic scientific instruments. At the same time, this utility model overcomes the defects existing in traditional mechanics experiments. By pausing the observation during the acquisition process or replaying the waveform, the fleeting experimental results can be retained and reproduced, which is not only conducive to students' careful observation of the experimental results but also enables further in-depth analysis. The experimental device has certain popularization and economic benefits.

[0031] The visual air track comprehensive experimental instrument of this utility model can study the following experimental contents:

[0032] (1) By changing the number of magnet blocks in the oscillator to change the magnitude of the magnetic field, the electromagnetic induction phenomenon can be studied;

[0033] (2) Using collisions to verify the law of conservation of momentum;

[0034] (3) The motion law of the spring oscillator;

[0035] (4) Measuring the velocity of uniform linear motion;

[0036] (5) Newton's laws of motion;

[0037] (6) Magnetic damping phenomenon.

[0038] The above is only the specific implementation manner of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by this utility model can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be subject to the protection scope of the claims.

Claims

1. An air cushion guide rail comprehensive experiment instrument, comprising a support component, a sensing component and a moving component, wherein the support component comprises an air cushion guide rail (102), the moving component comprises a slider (301), and the slider (301) moves on the air cushion guide rail (102) along the air cushion guide rail (102), characterized in that: The moving component also includes a magnetic element (302), and the magnetic element (302) is installed on the slider (301). The induction component includes an induction coil, and the induction coils are multiple in number and arranged at intervals along the air cushion guide rail (102). The slider (301) and the magnetic element (302) are located in the circle of the induction coil.

2. The air cushion guide rail comprehensive test instrument according to claim 1, characterized in that: The induction component further comprises an audio transmission line (204), a current acquisition module (205) and a display terminal (206); the current acquisition module (205) is connected to the induction coil; and the audio transmission line (204) is connected to the current acquisition module (205) and the display terminal (206).

3. The air cushion guide rail comprehensive test instrument according to claim 2, characterized in that: The display terminal (206) is equipped with Audition data display and analysis software.

4. The air cushion guide rail comprehensive test instrument according to claim 1, characterized in that: The induction coil is wound by enameled wire, and different coils have different numbers of turns.

5. The air cushion guide rail comprehensive test instrument according to claim 1, characterized in that: The support assembly further comprises an air inlet pipe (103), wherein the air inlet pipe (103) is located at the rear end surface of the support assembly.

6. The air cushion guide rail comprehensive test instrument according to claim 5, characterized in that: A plurality of small holes are distributed on the air cushion guide rail (102), and the small holes are connected to the air intake pipe (103).

7. The air cushion guide rail comprehensive test instrument according to claim 1, characterized in that: The number of the induction coils is three, namely induction coil one (201), induction coil two (202) and induction coil three (203).

8. The air cushion guide rail comprehensive test instrument according to claim 1, characterized in that: The cross section of the air cushion guide rail (102) is a triangle with the tip facing upward, and the bottom surface of the slider (301) matches the upper surface of the air cushion guide rail (102).

9. The air cushion guide rail comprehensive test instrument according to claim 1, characterized in that: The support assembly further comprises a pulley (105) and a buffer (104), wherein the pulley (105) and the buffer (104) are respectively located at two ends of the air cushion guide rail (102).

10. The air cushion guide rail comprehensive test instrument according to claim 1, characterized in that: The support assembly further comprises a base (101), wherein the base (101) is located at the bottom of the air cushion guide rail (102).

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