Electromagnetic induction experimental device

Abstract

The utility model relates to the field of electromagnetic induction experiments, and discloses an electromagnetic induction experiment device which comprises a box body, a box cover is rotatably arranged at the top of the box body, and a bearing plate is rotatably arranged on one side of the box cover. The bearing plate is provided with an electromagnetic induction generating mechanism and an adjusting mechanism used for adjusting the distance and angle of the electromagnetic induction generating mechanism. According to the electromagnetic induction experiment device, the adjusting mechanism capable of adjusting the distance and the angle of the electromagnetic induction generating mechanism is arranged, and the rotating rod in the angle adjusting component is connected with the coil in the electromagnetic induction generating mechanism under the cooperation of the transverse adjusting component and the longitudinal adjusting component; according to the electromagnetic induction experiment device, the first gear and the convex gear can rotate in a meshed mode by rotating the rocker, so that the coil is driven to rotate, the angle of the coil in a magnetic field is changed, more experiment variables and experiment design possibilities can be provided while the requirement for exploration of the basic rule of the electromagnetic induction phenomenon is met, and the effect of enriching experiment content and teaching means is achieved.

Description

Technical Field

[0001] The present application relates to the field of electromagnetic induction experiments, and in particular to an electromagnetic induction experiment device. Background Art

[0002] Electromagnetic induction is a basic knowledge point in high school physics. It refers to the fact that a conductor placed in a changing magnetic flux will generate an electromotive force, which is called an induced electromotive force or an induced electromotive force. If the conductor is closed into a loop, the electromotive force will drive electrons to flow, forming an induced current.

[0003] In teaching, it is relatively abstract to explain the electromagnetic induction phenomenon to students only through language expression. In order to enable students to intuitively feel the occurrence and change process of electromagnetic induction phenomenon, teachers often use electromagnetic induction experiments to assist students to intuitively feel and understand the occurrence of electromagnetic induction phenomenon. Electromagnetic induction experimental equipment can intuitively display the electromagnetic induction phenomenon. For example, by rotating magnets or coils, students can see the deflection of the ammeter pointer or the light of the light bulb with their own eyes, making the abstract concept of electromagnetic induction concrete and vivid, and enhancing students' perceptual understanding of electromagnetic induction phenomenon;

[0004] The common electromagnetic induction experiment process is generally to connect the ammeter, switch, coil, and magnet in series in sequence through wires to form a closed circuit, manually move the coil into the magnetic field, and cut the magnetic flux lines. The ammeter pointer deflects, indicating that current is generated, disconnect the circuit, disassemble the experimental equipment and sort it out, and finally fill in the experimental conclusion. In view of the above experimental process, since the coil is manually picked up to cut the magnetic flux lines in the magnetic field, the distance and angle of the manual movement of the coil cannot be determined. Therefore, although the above experimental process can intuitively feel the electromagnetic induction phenomenon, it is impossible to deeply understand other experimental variables in the electromagnetic induction phenomenon in the experiment, such as the number of coil turns, magnetic flux, and the angle between the direction of the magnetic field and the area normal. The influence of the electromotive force generated by electromagnetic induction. In order to solve the above problems, an electromagnetic induction experimental device is proposed.

[0005] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0006] In order to solve the electromagnetic induction experiment problem, the present application provides an electromagnetic induction experiment device.

[0007] The electromagnetic induction experimental device provided in this application adopts the following technical solution:

[0008] An electromagnetic induction experimental device comprises a box body, a box cover is rotatably provided on the top of the box body, a supporting plate is rotatably provided on one side of the box cover, an electromagnetic induction generating mechanism and an adjusting mechanism for adjusting the distance and angle of the electromagnetic induction generating mechanism are provided on the supporting plate;

[0009] The adjustment mechanism includes a transverse adjustment component, a longitudinal adjustment component and an angle adjustment component;

[0010] The angle adjustment component includes a support column and a limit assembly, a rotating shaft 1 is rotatably arranged in the support column, a gear 1 and a rotating rod are respectively arranged at both ends of the rotating shaft 1, the other end of the rotating rod is connected to the electromagnetic induction generating mechanism, a convex gear is rotatably arranged on one side of the support column, the gear 1 is meshed with the convex gear, a rotating shaft 2 is arranged on one side of the convex gear, a rocker is arranged on one side of the rotating shaft 2, and one end of the rocker is connected to the limit assembly.

[0011] Preferably, the electromagnetic induction generating mechanism comprises a horseshoe magnet, a coil, a wire, a sensitive galvanometer, a connecting assembly and a power supply, the longitudinal adjustment component and the sensitive galvanometer are connected by a wire, the connecting assembly connects the longitudinal adjustment component and the coil, the horseshoe magnet is arranged on the transverse adjustment component, and the rotating rod is connected to the coil;

[0012] The connecting assembly comprises a wire loop, a buckle and a clamping block. The two ends of the wire loop are rotatably connected to the buckle and the clamping block respectively, and the buckle and the clamping block are matched.

[0013] Preferably, the lateral adjustment component includes a rotating groove, a threaded rod is threadedly provided in the rotating groove, a moving block is threadedly provided at one end of the threaded rod, a rotating handle is provided on one side of the supporting plate, one end of the rotating handle is connected to the threaded rod, a scale is also provided on the supporting plate, the scale is aligned with the side of the rotating groove, and the horseshoe-shaped magnet is provided on the moving block.

[0014] Preferably, the longitudinal adjustment component comprises an electric telescopic rod, and a support plate is provided at the output end of the electric telescopic rod, the top of the support plate is connected to the wire, and the bottom of the support plate is connected to the wire ring.

[0015] Preferably, the limiting assembly comprises a limiting column, one end of which is rotatably provided with a limiting block, and one end of which is fitted with the rocker.

[0016] Preferably, a storage rack is provided at the bottom of the box.

[0017] In summary, compared with the related art, the utility model has the following beneficial effects:

[0018] By setting an adjustment mechanism that can adjust the distance and angle of the electromagnetic induction generating mechanism, with the cooperation of the lateral adjustment component and the longitudinal adjustment component, the rotating rod in the angle adjustment component is connected to the coil in the electromagnetic induction generating mechanism. When conducting an electromagnetic induction experiment, the rocker can be turned to make the gear 1 and the convex gear mesh and rotate, thereby driving the coil to rotate and changing the angle of the coil in the magnetic field. By adjusting the angle of the coil, on the one hand, the rate of change of the magnetic flux can be changed while keeping the coil movement speed and the magnetic field strength unchanged. On the other hand, the relationship curve between the induced electromotive force and time of the coil at different angles can be studied, or the law of the change of the induced current with the coil movement speed at different angles can be compared. Compared with the existing technology, while satisfying the exploration of the basic laws of the electromagnetic induction phenomenon, it can also provide more experimental variables and experimental design possibilities, which has the effect of enriching the experimental content and teaching methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the application;

[0020] Figure 2 yes Figure 1 A schematic diagram of the structure enlargement in the middle;

[0021] Figure 3 is a side view schematic diagram of the structure of an embodiment of the application;

[0022] Figure 4 is a schematic diagram of the structure of the electromagnetic induction mechanism of the embodiment of the application;

[0023] Figure 5 yes Figure 4 Enlarged schematic diagram of the structure at point B in the middle.

[0024] Explanation of the accompanying reference numerals: 1. Box body; 2. Box cover; 3. Support plate; 4. Rotating groove; 5. Threaded rod; 6. Moving block; 7. Scale; 8. Rotating handle; 9. Storage rack; 10. Support column; 11. Rotating axis one; 12. Gear one; 13. Convex gear; 14. Rotating axis two; 15. Rocker; 16. Limit column; 17. Limit block; 18. Rotating rod; 19. Electric telescopic rod; 20. Support plate; 21. Horseshoe magnet; 22. Coil; 23. Wire; 24. Sensitive galvanometer; 25. Wire ring; 26. Buckle; 27. Block. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-5 This application is described in further detail.

[0026] The present application embodiment discloses an electromagnetic induction experimental device. Figure 1-5, an electromagnetic induction experimental device, comprising a box body 1, a box cover 2 is rotatably provided on the top of the box body 1, a supporting plate 3 is rotatably provided on one side of the box cover 2, and an electromagnetic induction generating mechanism and an adjusting mechanism for adjusting the distance and angle of the electromagnetic induction generating mechanism are provided on the supporting plate 3;

[0027] The adjustment mechanism includes a lateral adjustment component, a longitudinal adjustment component and an angle adjustment component;

[0028] The angle adjustment component includes a support column 10 and a limit assembly. A rotating shaft 11 is rotatably provided in the support column 10. A gear 12 and a rotating rod 18 are respectively provided at both ends of the rotating shaft 11. The other end of the rotating rod 18 is connected to the electromagnetic induction generating mechanism. A convex gear 13 is rotatably provided on one side of the support column 10. The gear 12 and the convex gear 13 are meshed. A rotating shaft 2 14 is provided on one side of the convex gear 13. A rocker 15 is provided on one side of the rotating shaft 2 14. One end of the rocker 15 is connected to the limit assembly.

[0029] By adopting the above technical solution, with the cooperation of the lateral adjustment component and the longitudinal adjustment component, the rotating rod 18 in the angle adjustment component is connected to the electromagnetic induction generating mechanism. When conducting an electromagnetic induction experiment, the rocker 15 can be turned to make the gear 12 and the convex gear 13 mesh and rotate, so that the rotating rod 18 drives the electromagnetic induction generating mechanism to adjust the angle, providing more experimental variables for the electromagnetic induction experiment, such as magnetic flux, magnetic field direction, etc.

[0030] Reference Figure 1 and 4 The electromagnetic induction generating mechanism includes a horseshoe magnet 21, a coil 22, a wire 23, a sensitive galvanometer 24, a connecting assembly and a power supply, the longitudinal adjustment component and the sensitive galvanometer 24 are connected through the wire 23, the connecting assembly connects the longitudinal adjustment component and the coil 22, the horseshoe magnet 21 is arranged on the transverse adjustment component, and the rotating rod 18 is connected to the coil 22;

[0031] The connecting assembly includes a wire loop 25, a buckle 26, and a clamping block 27. The two ends of the wire loop 25 are rotatably connected to the buckle 26 and the clamping block 27 respectively, and the buckle 26 and the clamping block 27 fit together.

[0032] It should be noted that the electromagnetic induction generating mechanism includes a horseshoe magnet 21, a coil 22, a wire 23, a sensitive ammeter 24, and a connecting component and a power supply. Usually, the horseshoe magnet 21, the coil 22, the sensitive ammeter 24, and the power supply are connected in series through the wire 23 to form a closed circuit, wherein the power supply can be a battery, a power adapter, etc., which plays a role in driving the flow of charges. It is common knowledge that a power supply is required to form a closed circuit. It is not reflected in the figure. The connection working principle of the above-mentioned technical features is a well-known technology in the field, so it will not be elaborated here.

[0033] It should be further explained that by adjusting the angle between the coil 22 and the direction of the magnetic field, the dependence of the induced current on the direction of the magnetic field can be explored. Lenz's law points out that the direction of the induced current always tries to prevent the change of the magnetic flux that causes it. By changing the angle of the coil 22, it is possible to intuitively verify whether the direction of the induced current conforms to this law, and deepen the understanding of Lenz's law. In addition, when the coil 22 cuts the magnetic flux lines, the rate of change of the magnetic flux is related to the movement speed of the coil 22, the magnetic field strength, and the angle between the coil 22 and the magnetic field. By adjusting the angle of the coil 22, the rate of change of the magnetic flux can be changed while keeping the movement speed of the coil 22 and the magnetic field strength unchanged, and deepen the understanding of Faraday's law of electromagnetic induction.

[0034] By adopting the above technical solution, the wire loop 25 is connected to the coil 22. With the cooperation of the buckle 26 and the block 27, it is convenient to replace the coil 22 with different numbers of turns to participate in the experiment. The sensitive ammeter 24 can be hung on the box cover 2 during the experiment to facilitate viewing of the experimental changes. The length of the wire 23 can be adjusted to a suitable length according to the actual required length, and will not affect the experimental results due to being too long or too short. Under the action of the lateral adjustment component, the horseshoe magnet 21 can move laterally to complete the movement of cutting the magnetic flux lines, and the electromagnetic induction phenomenon can be verified. When the rotating rod 18 is driven to rotate, the coil 22 can be driven to rotate, thereby changing the angle of the coil 22 in the magnetic field. The rotating rod 18 and the coil 22 are detachable.

[0035] Reference Figure 1 The lateral adjustment component includes a rotating groove 4, a threaded rod 5 is provided on the inner thread of the rotating groove 4, a moving block 6 is provided on one end of the threaded rod 5, a rotating handle 8 is provided on one side of the supporting plate 3, one end of the rotating handle 8 is connected to the threaded rod 5, a scale 7 is also provided on the supporting plate 3, the scale 7 is aligned with the side of the rotating groove 4, and a horseshoe magnet 21 is provided on the moving block 6;

[0036] By adopting the above technical solution, when conducting an experiment, the operating student can refer to the scale distance displayed on the ruler 7 and move the horseshoe-shaped magnet 21 set on the moving block 6 by rotating the rotating handle 8, so as to observe the influence of the movement of the horseshoe-shaped magnet 21 on the experimental data and variables.

[0037] Reference Figure 1 , 3 4. The longitudinal adjustment component includes an electric telescopic rod 19. The output end of the electric telescopic rod 19 is provided with a support plate 20. The top of the support plate 20 is connected to the wire 23, and the bottom of the support plate 20 is connected to the wire ring 25;

[0038] By adopting the above technical solution, the extension and retraction of the electric telescopic rod 19 can adjust the longitudinal position of the coil 22 in the magnetic field, and can cooperate with the lateral adjustment component and the angle adjustment component to provide more experimental variables for the experiment.

[0039] It should be noted that the electric telescopic rod 19 and the support column 10 are both rotatably connected to the support plate 3. When the experimental equipment is not in use, the electric telescopic rod 19 and the support column 10 are folded and placed on the support plate 3, and the box cover 2 is provided with a placement groove corresponding to the electric telescopic rod 19 and the support column 10;

[0040] Reference Figure 2 The limiting assembly includes a limiting column 16, one end of which is rotatably provided with a limiting block 17, and one end of the limiting block 17 is fitted with the rocker 15;

[0041] It should be noted that the opening on the limit block 17 does not affect the outer wall of the rocker 15 from being restricted by the limit block 17, and there is damping between the limit block 17 and the limit column 16, so that the limit block 17 cannot rotate on its own without being subjected to external force;

[0042] By adopting the above technical solution, when the angle of the coil 22 is adjusted by rotating the rocker 15, the adjusted angle needs to be limited and fixed. When one end of the limit block 17 is in engagement with the rocker 15, it plays a role of limiting and fixing. When the limit block 17 is separated from the rocker 15, the limiting effect is cancelled.

[0043] Reference Figure 1 , a storage rack 9 is provided at the bottom of the box body 1;

[0044] It should be noted that the storage rack 9 is provided with storage slots corresponding to the equipment required for the experiment;

[0045] By adopting the above technical solution, the arrangement of the storage rack 9 facilitates the arrangement and storage of the experimental instruments after the experiment is completed.

[0046] The implementation principle of the electromagnetic induction experimental device of the embodiment of the present application is as follows: when in use, the box cover 2 is opened, and the supporting plate 3 is placed in a horizontal position, and the electric telescopic rod 19 and the support column 10 are adjusted to a position perpendicular to the supporting plate 3. Then, the operating student can take out the required experimental equipment from the storage rack 9, place the horseshoe magnet 21 on the moving block 6, connect the coil 22 to the supporting plate 20 through the wire loop 25, and connect one side of the coil 22 to the rotating rod 18, hang the sensitive ammeter 24 on the box body 2, and connect the required equipment to the power supply through the wire 23 to form a closed circuit. By turning the rotating handle 8, the horseshoe magnet can be moved. Iron 21 completes the movement of cutting magnetic flux lines. At this time, current will be generated, and the pointer of the sensitive flow meter 24 will be deflected, completing the basic understanding of the electromagnetic induction phenomenon. In order to further explore other experimental variables of the electromagnetic induction phenomenon, the rocker 15 can be rotated. Under the meshing action of gear 12 and the convex gear 13, the angle of the coil 22 can be adjusted, thereby changing the direction of the magnetic field, thereby appearing experimental variables such as the rate of change of magnetic flux, the speed of coil movement, the magnetic field strength, and the angle between the coil and the magnetic field, which increases the operability of the experimental equipment and enriches the experimental content. After the experiment is completed, the experimental equipment used can be disassembled and put back into the storage rack 9.

[0047] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0048] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0049] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An electromagnetic induction experimental device, comprising a box (1), characterized in that: A box cover (2) is rotatably provided on the top of the box body (1), a support plate (3) is rotatably provided on one side of the box cover (2), and an electromagnetic induction generating mechanism and an adjustment mechanism for adjusting the distance and angle of the electromagnetic induction generating mechanism are provided on the support plate (3); The adjustment mechanism includes a transverse adjustment component, a longitudinal adjustment component and an angle adjustment component; The angle adjustment component comprises a support column (10) and a limit assembly, wherein a rotating shaft (11) is rotatably arranged inside the support column (10), a gear (12) and a rotating rod (18) are respectively arranged at two ends of the rotating shaft (11), the other end of the rotating rod (18) is connected to an electromagnetic induction generating mechanism, a convex gear (13) is rotatably arranged on one side of the support column (10), the gear (12) and the convex gear (13) are meshed, a rotating shaft (14) is arranged on one side of the convex gear (13), a rocker (15) is arranged on one side of the rotating shaft (14), and one end of the rocker (15) is connected to the limit assembly.

2. The electromagnetic induction experimental device according to claim 1, characterized in that: The electromagnetic induction generating mechanism comprises a horseshoe magnet (21), a coil (22), a wire (23), a sensitive ammeter (24), a connecting assembly and a power source; the longitudinal adjustment component and the sensitive ammeter (24) are connected via the wire (23); the connecting assembly connects the longitudinal adjustment component and the coil (22); the horseshoe magnet (21) is arranged on the transverse adjustment component; and the rotating rod (18) is connected to the coil (22); The connecting assembly comprises a wire loop (25), a buckle (26), and a clamping block (27); two ends of the wire loop (25) are rotatably connected to the buckle (26) and the clamping block (27), respectively; the buckle (26) and the clamping block (27) are fitted together.

3. The electromagnetic induction experimental device according to claim 2, characterized in that: The lateral adjustment component comprises a rotating groove (4), a threaded rod (5) is provided in the internal thread of the rotating groove (4), a moving block (6) is provided in the threaded manner at one end of the threaded rod (5), a rotating handle (8) is provided at one side of the supporting plate (3), one end of the rotating handle (8) is connected to the threaded rod (5), a scale (7) is further provided on the supporting plate (3), the scale (7) is aligned with the side of the rotating groove (4), and the horseshoe-shaped magnet (21) is provided on the moving block (6).

4. The electromagnetic induction experimental device according to claim 2, characterized in that: The longitudinal adjustment component comprises an electric telescopic rod (19), the output end of the electric telescopic rod (19) being provided with a support plate (20), the top of the support plate (20) being connected to a wire (23), and the bottom of the support plate (20) being connected to a wire ring (25).

5. The electromagnetic induction experimental device according to claim 1, characterized in that: The limiting assembly comprises a limiting column (16), one end of which is rotatably provided with a limiting block (17), and one end of the limiting block (17) is fitted with the rocker (15).

6. The electromagnetic induction experimental device according to claim 1, characterized in that: A storage rack (9) is provided at the bottom of the box body (1).

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