An electromagnetic damping and electromagnetic drive experimental demonstrator

Abstract

The utility model discloses an electromagnetic damping and electromagnetic drive experimental demonstrator, belonging to the field of experimental demonstration equipment. The utility model comprises: a bracket, a rotating shaft is installed on the upper part of the bracket; a magnetic pendulum, the magnetic pendulum comprises a magnetic pendulum frame and a magnet, the upper end of the magnetic pendulum frame is rotatably installed on the rotating shaft, a swing gap is provided between the bottom end and the bracket, and an avoidance gap is provided on the magnetic pendulum frame for swinging in the direction perpendicular to the rotating shaft, and magnets can be detachably installed on the relative inner wall surface of the lower part of the magnetic pendulum frame corresponding to the avoidance gap; a conductor pendulum, the conductor pendulum comprises a conductor pendulum frame and a conductor, the upper end of the conductor pendulum frame is rotatably connected to the rotating shaft to swing in the direction perpendicular to the rotating shaft, and a conductor is installed at the lower end corresponding to the magnet. The demonstrator can be used to demonstrate both electromagnetic damping phenomenon and electromagnetic drive phenomenon. By disassembling and assembling the magnet to observe the comparative experiment of the movement of the magnetic pendulum and the conductor pendulum in the state of magnet or not, it can be clearly observed that electromagnetic damping and electromagnetic drive phenomena occur, which enhances the experimental demonstration effect.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental demonstration equipment, and more specifically to an electromagnetic damping and electromagnetic driving experimental demonstrator. Background Art

[0002] Electromagnetic damping and electromagnetic drive phenomena are the key points in middle school physics teaching. Physical experimental equipment is usually needed for demonstration in the teaching process to help students gain a more intuitive and profound understanding. However, the existing electromagnetic damping demonstrator and electromagnetic drive demonstrator are two sets of equipment. One set of equipment can only demonstrate the electromagnetic damping phenomenon, and the other set can only demonstrate the electromagnetic drive phenomenon. The operation is inconvenient during the experiment, and the experimental phenomenon is not obvious enough, and the experimental effect is not ideal.

[0003] Therefore, how to provide an experimental demonstrator with obvious experimental phenomena that can be used to demonstrate both electromagnetic damping phenomenon and electromagnetic driving phenomenon is a technical problem that people in this field need to solve urgently. Utility Model Content

[0004] In view of this, the utility model aims to provide a demonstrator with obvious experimental phenomena, which can be used to demonstrate both electromagnetic damping phenomenon and electromagnetic driving phenomenon.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An electromagnetic damping and electromagnetic driving experimental demonstrator, comprising:

[0007] A bracket, wherein a rotating shaft is installed on the upper part of the bracket;

[0008] A magnetic pendulum, the magnetic pendulum comprising a magnetic pendulum frame and a magnet, the upper end of the magnetic pendulum frame being rotatably mounted on the rotating shaft, a swing gap being provided between the bottom end and the bracket, and an avoidance gap being provided on the magnetic pendulum frame for swinging in a direction perpendicular to the rotating shaft, and the magnet being detachably mounted on the inner side wall surface of the lower part of the magnetic pendulum frame corresponding to the avoidance gap;

[0009] A conductor pendulum comprises a conductor pendulum frame and a conductor. The conductor pendulum frame is located in the avoidance gap and the upper end is rotatably connected to the rotating shaft so as to swing in a direction perpendicular to the rotating shaft. The conductor is installed at the lower end corresponding to the magnet.

[0010] The beneficial effects that can be achieved by the utility model are as follows: the demonstrator can observe the electromagnetic damping phenomenon by swinging the conductor pendulum, and can also observe the electromagnetic driving phenomenon by swinging the magnet pendulum, and the magnet can be disassembled. Through the comparative experiment of the movement of the magnet pendulum and the conductor pendulum in the state with and without the magnet, the electromagnetic damping and electromagnetic driving phenomena can be clearly observed, thereby enhancing the experimental demonstration effect.

[0011] Preferably, the bracket includes a base plate and a column, the column is fixed on the base plate, and the rotating shaft is fixed on the upper end of the column.

[0012] Preferably, the magnet swing frame includes a U-shaped swing frame with an opening on the top and two iron sheets, a swing gap is provided between the bottom wall of the U-shaped swing frame and the bottom plate, and the opposite side walls of the top opening end are rotatably connected to the rotating shaft, the two iron sheets are symmetrically fixed at the bottom ends of the opposite side walls of the U-shaped swing frame, and the two magnets can be adsorbed and connected to the two iron sheets respectively.

[0013] Preferably, the U-shaped swing frame includes two rotating rods and a connecting rod installed between the two rotating rods, the two rotating rods are arranged at intervals along the axial direction of the rotating shaft to form the avoidance gap, and their upper ends are rotatably installed on the rotating shaft, and the two iron sheets are respectively covered on the side walls close to each other at the lower ends of the two rotating rods, and the connecting rod is arranged perpendicular to the rotating rods and its two ends are respectively connected to the bottom ends of the two rotating rods.

[0014] Preferably, a locking bolt is installed at the lower end of the column, and a threaded blind hole is opened on the rotating rod close to the side of the column. The locking bolt can be threadedly connected in the threaded blind hole to fix the magnet swing frame.

[0015] Preferably, the conductor pendulum frame includes a pendulum rod and a pendulum, the upper end of the pendulum rod is rotatably mounted on the rotating shaft between the corresponding two rotating rods, the pendulum is fixed to the other end of the pendulum rod, and the conductor is fixed to the pendulum.

[0016] Preferably, the base plate, the column, the rotating rod, the connecting rod, the rocker arm, and the pendulum are all insulators.

[0017] Preferably, lubricant is applied between the rotating rod and the rotating shaft, and between the swing rod and the rotating shaft.

[0018] Preferably, the conductor is a conductor sheet, and the conductor sheet is fixed on the pendulum.

[0019] It can be seen from the above technical solution that, compared with the prior art, the utility model discloses an electromagnetic damping and electromagnetic drive experimental demonstrator, which can be used to demonstrate both electromagnetic damping and electromagnetic drive phenomena, and the magnet is adsorbed on the iron sheet to achieve detachable installation of the magnet. Through the comparative experiment of the movement of the magnetic pendulum and the conductor pendulum in the presence or absence of the magnet, the electromagnetic damping and electromagnetic drive phenomena can be clearly observed, thereby enhancing the experimental demonstration effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0021] Figure 1 The utility model provides a schematic diagram of the main structure of the conductor pendulum in the swinging state of an electromagnetic damping and electromagnetic drive experimental demonstrator.

[0022] Figure 2 The utility model provides a three-dimensional structural diagram of a conductor pendulum in a swinging state of an electromagnetic damping and electromagnetic drive experimental demonstrator.

[0023] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of part A.

[0024] Figure 4 This is a schematic diagram of the right side structure of an electromagnetic damping and electromagnetic drive experimental demonstrator in a vertical state.

[0025] Figure 5 for Figure 4 The enlarged structural diagram of part B is shown in the figure.

[0026] In the figure: 1, bracket, 11, bottom plate, 12, column, 2, rotating shaft, 3, magnet swing frame, 31, U-shaped swing frame, 32, iron sheet, 311, rotating rod, 312, connecting rod, 4, magnet, 5, conductor swing frame, 51, pendulum, 52, pendulum, 6, conductor, 7, locking bolt. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-Figure 5 The utility model embodiment discloses an electromagnetic damping and electromagnetic driving experimental demonstrator, comprising:

[0029] A bracket 1, wherein a rotating shaft 2 is mounted on the upper portion of the bracket 1;

[0030] The magnetic pendulum comprises a magnetic pendulum frame 3 and a magnet 4. The upper end of the magnetic pendulum frame 3 is rotatably mounted on the rotating shaft 2, and a swing gap is provided between the bottom end and the bracket 1. The magnetic pendulum frame 3 is provided with an escape gap for swinging in a direction perpendicular to the rotating shaft. The magnet 4 can be detachably mounted on the inner wall surface of the lower part of the magnetic pendulum frame 3 corresponding to the escape gap.

[0031] The conductor pendulum comprises a conductor pendulum frame 5 and a conductor 6. The conductor pendulum frame 5 is located in the avoidance gap and the upper end is rotatably connected to the rotating shaft 2 so as to swing along a direction perpendicular to the rotating shaft 2. The conductor 6 is installed at the lower end corresponding to the magnet 4.

[0032] This embodiment can observe the electromagnetic damping phenomenon by swinging the conductor pendulum, and can also observe the electromagnetic driving phenomenon by swinging the magnet pendulum. Moreover, the magnet 4 can be disassembled, and through the comparative experiment of the movement of the magnet pendulum and the conductor pendulum with and without the magnet 4, it can be clearly observed that the electromagnetic damping or electromagnetic driving phenomenon occurs, which enhances the experimental demonstration effect.

[0033] In a specific example, the bracket 1 includes a bottom plate 11 and a column 12, the column 12 is fixed on the bottom plate 11, and the shaft 2 is fixed on the upper end of the column 12. The bracket 1 has a stable structure and will not affect the experimental effect.

[0034] In a specific example, the magnet swing frame 3 includes a U-shaped swing frame 31 with an opening at the top and two iron sheets 32. There is a swing gap between the bottom wall of the U-shaped swing frame 31 and the bottom plate 11, and the opposite side walls of the top opening end are rotatably connected to the rotating shaft 2. The two iron sheets 32 are symmetrically fixed at the bottom ends of the opposite side walls of the U-shaped swing frame 31. The two magnets 4 can be adsorbed and connected to the two iron sheets 32 respectively, and the magnets 4 are easy to install and disassemble.

[0035] In a specific example, the U-shaped swing frame 31 includes two rotating rods 311 and a connecting rod 312 installed between the two rotating rods 311. The two rotating rods 311 are arranged at intervals along the axial direction of the rotating shaft 2 to form an avoidance gap. The upper ends of the two rotating rods 311 are rotatably installed on the rotating shaft 2. The two iron sheets 32 are respectively covered on the side walls of the lower ends of the two rotating rods 311 that are close to each other. The connecting rod 312 is arranged perpendicular to the rotating rod 311 and its two ends are respectively connected to the bottom ends of the two rotating rods 311 to ensure that the two magnets 4 can move synchronously.

[0036] In a specific example, a locking bolt 7 is installed at the lower end of the column 12, and a threaded blind hole is opened on the rotating rod 311 close to the side of the column 12. The locking bolt 7 can be threadedly connected in the threaded blind hole to fix the magnet swing frame 3. The locking bolt is preferably made of insulating material. When observing the electromagnetic damping phenomenon, the magnet swing frame 3 can be fixed by the locking bolt 7.

[0037] In a specific example, the conductor pendulum frame 5 includes a pendulum rod 51 and a pendulum 52 , one end of the pendulum rod 51 is rotatably connected to the rotating shaft 2 between the corresponding two rotating rods 311 , the pendulum 52 is fixed to the other end of the pendulum rod 51 , and the conductor 6 is fixed to the pendulum 52 .

[0038] In a specific example, the conductor 6 is a conductor sheet, which can be pasted or nailed on the pendulum 52. The conductor sheet can be made of copper sheet, aluminum sheet, etc., or other conductor 6 materials, and the utility model does not limit this.

[0039] In a specific example, the magnet 4 may be a strong magnet.

[0040] In a specific example, the length of the magnet 4 is about 2 cm, and the maximum length of the conductor sheet is about 15 cm, which is convenient for observing the experimental effect.

[0041] In a specific example, the base plate 11, the column 12, the rotating rod 311, the connecting rod 312, the swing rod 51, and the pendulum 52 are all insulators, such as wood, plastic, etc., and the present invention does not impose any limitation on this.

[0042] In a specific example, lubricant is applied between the rotating rod 311 and the rotating shaft 2 and between the swing rod 51 and the rotating shaft 2 to reduce friction during rotation and enhance the experimental effect.

[0043] The method of using the electromagnetic damping and electromagnetic drive experimental demonstrator of the utility model is as follows:

[0044] Take out the magnet 4 on the magnetic pendulum, release the conductor pendulum from the horizontal position, and observe the movement of the conductor pendulum. It can be seen that the conductor pendulum swings for a long time. Put the magnet 4 into the magnetic pendulum, and fix the magnetic pendulum in the vertical position by locking bolts 7. Release the conductor pendulum from the horizontal height again, and it can be seen that the conductor pendulum stops swinging quickly, and the electromagnetic damping phenomenon is obvious.

[0045] Take out magnet 4 from the magnetic pendulum, put the conductor pendulum in a vertical position, release the magnetic pendulum from the horizontal position, and it can be seen that the conductor pendulum is not driven; put magnet 4 into the magnetic pendulum, release the magnetic pendulum from the horizontal position again, and it can be seen that the conductor pendulum is quickly driven, and the electromagnetic drive phenomenon is obvious.

[0046] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0047] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0049] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electromagnetic damping and electromagnetic drive experimental demonstrator, characterized in that: include: A bracket (1), wherein a rotating shaft (2) is mounted on the upper portion of the bracket (1); A magnetic pendulum, the magnetic pendulum comprising a magnetic pendulum frame (3) and a magnet (4); the upper end of the magnetic pendulum frame (3) is rotatably mounted on the rotating shaft (2); a swing gap is provided between the lower end and the bracket (1); and an escape gap is provided on the magnetic pendulum frame (3) for swinging in a direction perpendicular to the rotating shaft; the magnet (4) is detachably mounted on the inner side wall surface of the lower part of the magnetic pendulum frame (3) corresponding to the escape gap; A conductor pendulum, comprising a conductor pendulum frame (5) and a conductor (6); the conductor pendulum frame (5) is located in the avoidance gap and the upper end of the conductor pendulum frame is rotatably connected to the rotating shaft (2) so as to swing in a direction perpendicular to the rotating shaft (2); and the conductor (6) is installed at the lower end corresponding to the magnet (4).

2. The electromagnetic damping and electromagnetic driving experimental demonstrator according to claim 1, characterized in that: The bracket (1) comprises a base plate (11) and a column (12); the column (12) is fixed on the base plate (11); and the rotating shaft (2) is fixed on the upper end of the column (12).

3. The electromagnetic damping and electromagnetic driving experimental demonstrator according to claim 2, characterized in that: The magnet swing frame (3) comprises a U-shaped swing frame (31) with an opening at the top and two iron sheets (32); a swing gap is provided between the bottom wall of the U-shaped swing frame (31) and the bottom plate (11); and opposite side walls at the top opening end are rotatably connected to the rotating shaft (2); the two iron sheets (32) are symmetrically fixed to the bottom ends of opposite side walls of the U-shaped swing frame (31); and the two magnets (4) can be respectively adsorbed and connected to the two iron sheets (32).

4. The electromagnetic damping and electromagnetic driving experimental demonstrator according to claim 3, characterized in that: The U-shaped swing frame (31) comprises two rotating rods (311) and a connecting rod (312) installed between the two rotating rods (311). The two rotating rods (311) are arranged at intervals along the axial direction of the rotating shaft (2) to form the avoidance gap. The upper ends of the two rotating rods (311) are rotatably installed on the rotating shaft (2). The two iron sheets (32) are respectively covered on the side walls of the lower ends of the two rotating rods (311) close to each other. The connecting rod (312) is arranged perpendicular to the rotating rods (311) and its two ends are respectively connected to the bottom ends of the two rotating rods (311).

5. The electromagnetic damping and electromagnetic driving experimental demonstrator according to claim 4, characterized in that: A locking bolt (7) is installed at the lower end of the column (12), and a threaded blind hole is opened on the rotating rod (311) close to the side of the column (12). The locking bolt (7) can be threadedly connected in the threaded blind hole to fix the magnet swing frame (3).

6. The electromagnetic damping and electromagnetic driving experimental demonstrator according to claim 4, characterized in that: The conductor pendulum frame (5) comprises a pendulum rod (51) and a pendulum (52); the upper end of the pendulum rod (51) is rotatably mounted on the rotating shaft between the corresponding two rotating rods (311); the pendulum (52) is fixed to the other end of the pendulum rod (51); and the conductor (6) is fixed to the pendulum (52).

7. The electromagnetic damping and electromagnetic driving experimental demonstrator according to claim 6, characterized in that: The bottom plate (11), the upright column (12), the rotating rod (311), the connecting rod (312), the swing rod (51), and the pendulum (52) are all insulators.

8. The electromagnetic damping and electromagnetic driving experimental demonstrator according to claim 6, characterized in that: Lubricant is applied between the rotating rod (311) and the rotating shaft (2), and between the swing rod (51) and the rotating shaft (2).

9. The electromagnetic damping and electromagnetic driving experimental demonstrator according to claim 6, characterized in that: The conductor (6) is a conductor sheet, and the conductor sheet is fixed on the pendulum (52).

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