Demonstration appliance for physics teaching

Abstract

The utility model discloses a demonstration appliance for physics teaching, which relates to the technical field of physics experiments, and comprises a track assembly in a closed shape connected end to end, and the track assembly is used for providing a suspension moving path of a superconductor; the moving assembly is arranged on the inner side of the track assembly and used for providing the superconductor close to or away from the surface of the track assembly; the releasing and recycling assembly is connected to the moving assembly and is used for bearing the superconductor; the releasing and recycling assembly is further provided with a plurality of rotating rollers, and the superconductors can be placed on the rotating rollers. According to the demonstration instrument for physics teaching, the problems of stability, safety and operation convenience of a demonstration device in the prior art are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of physical experiments, and particularly relates to a demonstration apparatus for physics teaching. Background Art

[0002] At present, in the teaching demonstration of condensed matter physics, the superconductor levitation experiment is an important demonstration content, and the principle of magnetic levitation is usually demonstrated through the interaction between a magnetic field and a superconductor. However, in traditional experimental devices, the track is not stable enough, which easily causes the superconductor to shift or lose balance during the demonstration, affecting the experimental effect. In addition, the superconductor needs to be kept at a low temperature during the experiment, generally cooled by liquid nitrogen, but the use of liquid nitrogen may lead to safety hazards, especially the potential harm to operators when liquid nitrogen splashes out has not been fully solved. Therefore, there is still much room for improvement in the stability, safety and operation convenience of existing demonstration devices. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a demonstration apparatus for physics teaching, so as to solve the problems of the existing demonstration device in terms of stability, safety and operation convenience.

[0004] To achieve the above purpose, the utility model provides the following technical scheme: A demonstration apparatus for physics teaching, used for the demonstration of condensed matter physics experiments, includes:

[0005] A track assembly; in a closed shape connected end to end, and the track assembly is used to provide a levitation and moving path for the superconductor;

[0006] A moving assembly, arranged inside the track assembly, and used to provide the superconductor to approach or move away from the surface of the track assembly;

[0007] A release and recovery assembly, connected to the moving assembly, and used to carry the superconductor;

[0008] Wherein, a plurality of rollers are further arranged on the release and recovery assembly, and the superconductor can be placed on the plurality of rollers.

[0009] In a feasible implementation manner, the track assembly includes: a permanent magnet, in a ring structure; two supporting edges, respectively located inside and outside the permanent magnet; the top of the supporting edge is higher than the permanent magnet; a protective outer frame, fixed on the outside of the outer supporting edge, and a groove is opened in the protective outer frame for placing the superconductor to prevent liquid nitrogen from splashing out and hurting people.

[0010] In a feasible implementation manner, the moving component includes: a fixed seat fixed at one inner end of the track component; a rotating cylinder rotatably arranged at the top end of the fixed seat, and the rotating cylinder is in a cavity state; a lifting rod clamped inside the rotating cylinder capable of lifting; an extension plate, one end of which is connected to the lifting rod, and the other end penetrates through the rotating cylinder and extends above the track component.

[0011] In a feasible implementation manner, the release and recovery component includes: a substrate fixedly installed on the end face of the extension plate located at one end of the track component, and the substrate is parallel to the top end face of the track component; a raised platform fixedly arranged at the top end of the substrate; a liquid inlet cavity opened in the inner cavity of the raised platform, and a plurality of liquid inlet holes are further arranged at the top end of the liquid inlet cavity; a plurality of rotating rollers, each of which is rotatably arranged in the liquid inlet hole, and the top end of the rotating roller protrudes from the top end face of the raised platform.

[0012] In a feasible implementation manner, the demonstration apparatus for physics teaching further includes a locking component arranged on the extension plate for locking the height position of the lifting rod on the rotating cylinder; the locking component includes: a rotating shaft penetrating through the extension plate; at least one eccentric locking block fixedly arranged on the outer walls at both ends of the rotating shaft, and the eccentric locking block can firmly abut against the outer wall of the rotating cylinder; a wrench fixed on one of the eccentric locking blocks.

[0013] In a feasible implementation manner, at least two support columns are further arranged at the bottom end of the track component, and a support seat is further arranged at the bottom end of each support column, and at least two support points are arranged between each support seat and the ground.

[0014] Compared with the prior art, the beneficial effects of the present utility model are: the demonstration apparatus for physics teaching provides a more stable, safe and convenient superconductor suspension demonstration device through the innovative track component, moving component, release and recovery component, locking component and support structure; the track component effectively prevents the splashing of liquid nitrogen through the support edge and the protective outer frame, improving the safety of the experiment; the moving component can precisely adjust the position and height of the superconductor to ensure the stability of its suspension during the demonstration; the release and recovery component reduces the difficulty of releasing and recovering the superconductor through the rotating roller design, improving the smoothness of the operation; greatly improving the effect of the experimental demonstration, the operation safety and the durability of the device. Description of the Drawings

[0015] Figure 1 is a structural schematic diagram of the present utility model;

[0016] Figure 2 is a structural schematic diagram of the extension plate in the present utility model;

[0017] Figure 3 This is a schematic structural diagram of the locking assembly in the present utility model;

[0018] Figure 4 This is a schematic structural diagram of the release and recovery assembly in the present utility model.

[0019] In the figure: 1, support column; 2, support base; 3, track assembly; 4, moving assembly; 5, release and recovery assembly; 6, locking assembly; 31, permanent magnet; 32, support edge; 33, protective outer frame; 41, fixed seat; 42, rotating cylinder; 43, lifting rod; 44, extending plate; 51, base plate; 52, raised platform; 53, liquid inlet cavity; 54, roller; 61, rotating shaft; 62, eccentric locking block; 63, wrench. Specific embodiments

[0020] 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 only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1 to 4 , the present utility model provides a technical solution: a demonstration apparatus for physics teaching, used for condensed matter physics experiment demonstration, including: a track assembly 3, a moving assembly 4, and a release and recovery assembly 5; the track assembly 3 is in a closed shape connected end to end, and the track assembly 3 is used to provide a superconducting levitation movement path; the moving assembly 4 is arranged inside the track assembly 3 and is used to move the superconductor closer to or farther away from the surface of the track assembly 3; the release and recovery assembly 5 is connected to the moving assembly 4 and is used to carry the superconductor; wherein a plurality of rollers 54 are further arranged on the release and recovery assembly 5, and the superconductor can be placed on the plurality of rollers 54.

[0022] This condensed matter physics experiment demonstration apparatus is used to demonstrate the levitation phenomenon of superconductors. Specifically, the track assembly 3 is in a closed loop, providing a path for the superconductor to circulate and levitate, ensuring its smooth operation on a stable track; the moving assembly 4 is installed inside the track assembly 3, used to adjust the distance between the superconductor and the track surface to better demonstrate the required magnetic levitation effect; the release and recovery assembly 5 is connected to the moving assembly 4, used to carry the superconductor. Before the experiment, liquid nitrogen can be used to contact the superconductor to achieve the superconducting effect of the superconductor. This step is carried out when the release and recovery assembly 5 is not close to the track assembly 3. Then, through the moving assembly 4, it is also convenient to place the superconductor on the track assembly 3 and to safely remove it from the track assembly 3 to end the experiment; in addition, this device is also equipped with multiple rollers 54, so that the superconductor can be easily placed on or removed from the rollers 54, reducing friction and maintaining balance, starting smoothly from the directions provided by the multiple rollers 54, and through the interception and deceleration of the multiple rollers 54, making the superconductor easy to recover; therefore, this device can provide a stable and controlled levitation environment for the superconductor, demonstrating the core principles of superconductivity and magnetic levitation; this design improves the stability and efficiency of the demonstration, and simplifies the operation process of the superconductor, with a good teaching demonstration effect.

[0023] In some examples, furthermore, the track assembly 3 includes: a permanent magnet 31, two supporting edges 32, and a protective outer frame 33; the permanent magnet 31 is in a ring structure; the two supporting edges 32 are respectively located inside and outside the permanent magnet 31; the top of the supporting edge 32 is higher than the permanent magnet 31; the protective outer frame 33 is fixed on the outside of the outer supporting edge 32, and a groove is provided inside the protective outer frame 33 for placing the superconductor to prevent liquid nitrogen from splashing out and hurting people.

[0024] The track assembly 3 provided in this example is composed of a permanent magnet 31, two supporting edges 32, and a protective outer frame 33; the permanent magnet 31 is in a ring structure, serving as the magnetic field source for the superconductor to levitate and move, ensuring stable magnetic levitation of the superconductor above it; the two supporting edges 32 are respectively located inside and outside the permanent magnet 31, supporting the entire track system, and their tops are higher than the permanent magnet 31, so that an additional guiding effect can be provided when the superconductor moves to prevent it from deviating from the track; a groove is provided inside the protective outer frame 33 for collecting the liquid nitrogen used in the superconductor to prevent liquid nitrogen from splashing out and causing harm; through the setting of this example, the stability of the superconductor movement is improved, and at the same time, the protective outer frame 33 effectively avoids potential safety hazards in the experiment, overall enhancing the safety and operation convenience of the demonstration device and ensuring the smooth progress of the experiment.

[0025] In some examples, furthermore, the moving component 4 includes: a fixed seat 41, a rotating cylinder 42, a lifting rod 43, and an extending plate 44; the fixed seat 41 is fixed at one inner end of the track component 3; the rotating cylinder 42 is arranged at the top end of the fixed seat 41 and can rotate around its own axis, and the rotating cylinder 42 is in a cavity state; the lifting rod 43 is clamped inside the rotating cylinder 42 and can move up and down; one end of the extending plate 44 is connected to the lifting rod 43, and the other end penetrates through the rotating cylinder 42 and extends above the track component 3.

[0026] In this example, the setting of the moving component 4 realizes the control function of the superconductor entering the track; specifically, the rotating cylinder 42 is arranged at the top end of the fixed seat 41 and can rotate around its own axis, so as to allow the adjustment of the horizontal position of the superconductor, and the superconductor can start from different starting points on the track, so as to flexibly meet different experimental requirements; the rotating cylinder 42 is a cavity structure, and the lifting rod 43 is accommodated inside. The lifting rod 43 is controlled by the staff to move up and down to control the height of the release and recovery component 5, so that the low-temperature superconductor can be slowly placed on the track component 3 and the test can start more safely.

[0027] In some examples, furthermore, the release and recovery component 5 includes: a base plate 51, a raised platform 52, a liquid inlet cavity 53, and a plurality of rollers 54; the base plate 51 is fixedly installed on the end face of the extending plate 44 at one end located in the track component 3, and the base plate 51 is parallel to the top end face of the track component 3; the raised platform 52 is fixedly arranged on the top end of the base plate 51; the liquid inlet cavity 53 is opened in the inner cavity of the raised platform 52, and a plurality of liquid inlet holes are also arranged at the top end of the liquid inlet cavity 53; each of the plurality of rollers 54 is rotatably arranged in the liquid inlet holes, and the top end of the roller 54 protrudes from the top end face of the raised platform 52.

[0028] In this example, the release and recovery component 5 completes the safe release and safe recovery of the superconductor on the track; specifically, the base plate 51 is firmly fixed on the end face of the extending plate 44 and is parallel to the track component 3, providing stable support for the release and recovery of the superconductor; the raised platform 52 is installed on the top end of the base plate 51 and serves as the main platform for the overall operation. The liquid inlet cavity 53 is arranged inside to store the control liquid (such as liquid nitrogen) that may be accidentally poured out to ensure safety in the experiment. The control liquid can enter the liquid inlet cavity 53 through the liquid inlet holes; the top end of each roller 54 protrudes from the surface of the raised platform 52 to form a set of movable support points; the staff pushes the superconductor, and then the roller 54 rotates, enabling the superconductor to start moving smoothly on it horizontally along the track component 3.

[0029] In some examples, furthermore, the demonstration apparatus for physics teaching further includes a locking assembly 6. The locking assembly 6 is arranged on the extension plate 44 and is used to lock the height position of the lifting rod 43 on the rotating cylinder 42. The locking assembly 6 includes: a rotating shaft 61, two eccentric locking blocks 62 and a wrench 63. The rotating shaft 61 penetrates through the extension plate 44. The two eccentric locking blocks 62 are fixedly arranged on the outer walls at both ends of the rotating shaft 61. The eccentric locking blocks 62 can firmly abut against the outer wall of the rotating cylinder 42. The wrench 63 is fixed on one of the eccentric locking blocks 62.

[0030] In this example, the locking assembly 6 functions to accurately lock the position of the lifting rod 43 through the cooperation of the rotating shaft 61, the eccentric locking blocks 62 and the wrench 63. By rotating the rotating shaft 61, an eccentric force can be generated to firmly press the locking blocks against the outer wall of the rotating cylinder 42, preventing unnecessary displacement of the lifting rod 43 during the preparation stage before the experiment starts. The wrench 63 is fixed on one of the eccentric locking blocks 62. By manually tightening or loosening the wrench 63, the pressing degree of the locking block against the rotating cylinder 42 can be easily adjusted, realizing the unlocking control of the position of the lifting rod 43.

[0031] In some examples, furthermore, at least two support columns 1 are provided at the bottom end of the track assembly 3. At the bottom end of each support column 1, a support base 2 is further provided. At least two support points are provided between each support base 2 and the ground.

[0032] In this example, the support columns 1 are installed at the bottom end of the track assembly 3, playing the role of bearing weight and supporting the track to ensure that the device does not tilt or shake during the experiment. A support base 2 is connected to the bottom end of each support column 1, and the support base 2 further evenly distributes the pressure to the ground, providing a more stable basic structure. At least two support points provided between the support base 2 and the ground enhance the overall balance of the device, thus ensuring the accuracy and safety of the device during the experimental demonstration process.

[0033] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by terms such as "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front part", "both ends", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation; at the same time, unless otherwise clearly specified and limited, terms such as "set", "installed", "connected", "fixedly installed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. Unless otherwise clearly limited, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A demonstration apparatus for physics teaching, used for the demonstration of condensed matter physics experiments, characterized in that, Comprising: An orbital component (3); in a closed shape with the head and tail connected, the orbital component (3) is used to provide a superconducting levitation moving path; A moving component (4), arranged inside the orbital component (3), used to move the superconductor closer to or away from the surface of the orbital component (3); A release and recovery component (5), connected to the moving component (4), used to carry the superconductor; Wherein a plurality of rollers (54) are further provided on the release and recovery component (5), and the superconductor can be placed on the plurality of rollers (54).

2. The demonstration apparatus for physics teaching according to claim 1, wherein: The orbital component (3) includes: A permanent magnet (31), in an annular structure; Two supporting edges (32), respectively located inside and outside the permanent magnet (31); the top of the supporting edge (32) is higher than the permanent magnet (31); A protective outer frame (33), fixed to the outside of the supporting edge (32) on the outside, and a groove is provided in the protective outer frame (33) for placing the splashed liquid nitrogen of the superconductor to prevent injury.

3. The demonstration apparatus for physics teaching according to claim 1, characterized in that: The moving component (4) includes: A fixed seat (41), fixed to one end inside the orbital component (3); A rotating cylinder (42), rotatably arranged on the top of the fixed seat (41) around its own axis, and the rotating cylinder (42) is in a cavity state; A lifting rod (43), capable of being lifted and clamped inside the rotating cylinder (42); An extension plate (44), one end connected to the lifting rod (43), and the other end passing through the rotating cylinder (42) and extending above the orbital component (3).

4. The demonstration apparatus for physics teaching according to claim 3, wherein: The release and recovery component (5) includes: A substrate (51), fixedly installed on the end face of the extension plate (44) located at one end of the orbital component (3), and the substrate (51) is parallel to the top end face of the orbital component (3); A raised platform (52), fixedly arranged on the top of the substrate (51); A liquid inlet cavity (53), opened in the inner cavity of the raised platform (52), and a plurality of liquid inlet holes are further provided at the top of the liquid inlet cavity (53); A plurality of rollers (54), each roller (54) is rotatably arranged in the liquid inlet hole, and the top of the roller (54) protrudes from the top end face of the raised platform (52).

5. The demonstration apparatus for physics teaching according to claim 3, characterized in that: The demonstration apparatus for physics teaching further includes a locking component (6), the locking component (6) is arranged on the extension plate (44), and is used to lock the height position of the lifting rod (43) on the rotating cylinder (42); the locking component (6) includes: A rotating shaft (61), passing through the extension plate (44); At least one eccentric locking block (62), fixedly arranged on the outer walls at both ends of the rotating shaft (61), and the eccentric locking block (62) can firmly abut against the outer wall of the rotating cylinder (42); A wrench (63), fixed to one of the eccentric locking blocks (62).

6. The demonstration apparatus for physics teaching according to claim 1, wherein: At least two support columns (1) are further provided at the bottom end of the track assembly (3), and a support base (2) is further provided at the bottom end of each support column (1). At least two support points are provided between each support base (2) and the ground.

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