Physical electromagnetism multifunctional experimental instrument

Abstract

The invention discloses a physical electromagnetism multifunctional experimental instrument, and relates to the technical field of experimental instruments, the physical electromagnetism multifunctional experimental instrument comprises a bottom plate and a connecting plate, the bottom plate and the connecting plate are fixedly connected, the outer side of the connecting plate is movably connected with a double-sided plate, the double-sided plate is provided with an electro-magnetic test assembly, and the positive and negative electrodes of a battery are fixedly connected with the two ends of a first strip-shaped magnet respectively. A sliding block can do circular motion on the inner side of the test disc, rotation of a second worm can drive a first strip-shaped magnet to rotate, the first strip-shaped magnet can drive scrap iron to move when rotating, a double-sided board is provided with a magnetic-to-electricity test assembly, rotation of a bidirectional threaded rod can drive two sets of U-shaped plates to move relatively, and the two sets of U-shaped plates are driven to move relatively. The U-shaped plate moves to drive the second bar magnets to move, the magnetic force of the two sets of second bar magnets enables the induction block to generate current, and the current on the induction block is displayed on the galvanometer.

Description

Technical Field

[0001] The present invention relates to the technical field of experimental instruments, in particular to a multifunctional physical electromagnetic experimental instrument. Background Art

[0002] Electromagnetism is one of the concepts in physics. It is a general term for the electrical and magnetic properties exhibited by matter. The reason for the occurrence of electromagnetic phenomena is that the movement of electric charges produces fluctuations and forms a magnetic field. Through specific electromagnetic experimental instruments, electromagnetics can be easily evolved and manifested in the research area of ​​the instrument, so that the efficiency of electromagnetic research and the integrity of the research on electromagnetic fields can be improved through experimental instruments.

[0003] The intrinsic connection between electricity and magnetism is extremely abstract. Traditional instruments often only present it through simple static displays or theoretical explanations, lacking intuitive and concrete presentation methods. Traditional experimental demonstrations are monotonous and boring, mostly mechanical operations with fixed processes, lacking dynamic elements. The experimental process lacks vitality and appeal, and cannot fully mobilize the observer's vision, thinking and other senses. In traditional experiments, observers are mostly in a passive viewing position and can only watch the operation. Therefore, it is necessary to propose a multifunctional experimental instrument for physical electromagnetism. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the prior art that the intrinsic connection between electricity and magnetism is extremely abstract, traditional instruments are often presented only through simple static displays or theoretical explanations, lack of intuitive and concrete presentation methods, traditional experimental demonstrations are monotonous and boring, mostly mechanical operations with fixed processes, lack of dynamic elements, the experimental process lacks vitality and appeal, and cannot fully mobilize the observer's vision, thinking and other senses. In traditional experiments, observers are mostly in a passive viewing position and can only watch the operation. A multifunctional experimental instrument for physical electromagnetics is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A multifunctional physical electromagnetic experimental instrument includes a bottom plate and a connecting plate, the bottom plate and the connecting plate are fixedly connected, a double-sided plate is movably connected to the outer side of the connecting plate, an electromagnetism test assembly is arranged on the double-sided plate, and the electromagnetism test assembly includes iron scraps, a test disc and a battery arranged on the double-sided plate, a sliding block and a second worm gear arranged on the test disc, and a first bar magnet movably connected to the sliding block, the positive and negative poles of the battery are respectively fixedly connected to the two ends of the first bar magnet, the sliding block will make a circular motion on the inner side of the test disc, and the rotation of the second worm gear will drive the first bar magnet The magnet rotates, and when the first bar magnet rotates, it drives the iron filings to move. A magnetoelectric test assembly is provided on the double-sided panel, and the magnetoelectric test assembly includes a bidirectional threaded rod, a U-shaped plate, a second bar magnet fixedly connected to the inner side of the U-shaped plate, an induction block and an ammeter provided on the bidirectional threaded rod. The rotation of the bidirectional threaded rod drives the two groups of U-shaped plates to move relative to each other, and the movement of the U-shaped plate drives the second bar magnet to move. The magnetic force of the two groups of second bar magnets causes the induction block to generate current, and the current on the induction block will be displayed on the ammeter.

[0007] The above technical solution further includes:

[0008] A transverse plate is fixedly connected to the outer side of the connecting plate, a first servo motor is fixedly connected to the transverse plate, and a first worm is fixedly connected to the end of the output shaft of the first servo motor. When the first servo motor is started, the first worm is driven to rotate.

[0009] The outer side of the connecting plate is movably connected to a rotating rod, the outer side of the rotating rod is fixedly connected to a first worm gear, and the outer side of the rotating rod is fixedly connected to the double-sided board. The rotation of the rotating rod will drive the rotating rod to rotate on the outer side of the connecting plate.

[0010] An L-shaped column is fixedly connected to the upper part of the double-sided panel, and the end of the L-shaped column away from the double-sided panel is fixedly connected to the test disc. An annular groove is opened inside the test disc, and the inner side of the annular groove is slidably connected to the sliding block. The function of the L-shaped column is to connect the double-sided panel and the test disc, and it can mainly play a supporting role for the test disc.

[0011] The upper portion of the sliding block is fixedly connected to a placement plate, the upper portion of the placement plate is fixedly connected to a second servo motor, the end portion of the output shaft of the second servo motor is fixedly connected to a second worm, and starting the second servo motor will drive the second worm to rotate.

[0012] The upper part of the placement plate is rotatably connected to a second worm gear, the second worm gear and the second worm are meshed with each other, the end of the second worm gear away from the placement plate is fixedly connected to the first bar magnet, the outer side of the first bar magnet is movably connected to the battery, the lower part of the battery is fixedly connected to the double-sided board, and the rotation of the second worm gear will drive the first bar magnet to rotate.

[0013] Sliding grooves are symmetrically provided on the double-sided panel, and a third servo motor and a limit rod are fixedly connected to the inner sides of the two groups of sliding grooves respectively. The output shaft end of the third servo motor and the bidirectional threaded rod are fixedly connected, and the bidirectional threaded rod is rotatably connected between one end away from the third servo motor and the sliding groove. The rotation of the output shaft end of the third servo motor will drive the bidirectional threaded rod to rotate.

[0014] The bidirectional threaded rod and the U-shaped plate are threadedly connected, and the U-shaped plate is slidably connected between one end away from the bidirectional threaded rod and the limiting rod. There are two groups of U-shaped plates, and the limiting rod serves to guide the path of the U-shaped plate.

[0015] The outer side of the U-shaped plate is fixedly connected with a fixing rod, and the outer side of the fixing rod is fixedly connected to the second bar magnet. The movement of the fixing rod will drive the second bar magnet to move.

[0016] The outer sides of the two groups of bidirectional threaded rods are commonly fixedly connected with a wire, the outer sides of the wires are fixedly connected to the sensing block, and the ends of the wires away from the sensing block are fixedly connected to the ammeter. The current generated on the sensing block can be measured by connecting the ammeter with the wires.

[0017] The present invention has the following beneficial effects:

[0018] 1. In the present invention, an electromagnetism test assembly is provided, the positive and negative poles of the battery are connected to the two ends of the first bar magnet, and the magnetic field is generated by electric current, which intuitively demonstrates the intrinsic connection between electricity and magnetism, allowing viewers to understand the basic principles of electromagnetism and concretize abstract concepts. The sliding block performs circular motion on the inner side of the test disk, and the rotation of the second worm can drive the rotation of the first bar magnet, thereby moving the broken iron chips. This dynamic demonstration process is vivid and can attract the attention of observers. The entire experimental operation process is simple and convenient. Observers can personally participate in the operation and observe the changes in the movement of the broken iron chips by changing the battery connection, rotating the second worm, and other operations.

[0019] 2. In the present invention, a magnetoelectric test assembly is provided, and the two sets of U-shaped plates and the second bar magnet are driven to move relative to each other by the rotation of the bidirectional threaded rod, so that the magnetic force acts on the induction block to generate current and is displayed on the ammeter. This can intuitively present the magnetoelectric phenomenon and transform abstract physical principles into visual operations. This design is easy to operate. The observer can rotate the bidirectional threaded rod to control the movement of the magnet and independently explore the effects of different movement speeds and distances on the induced current, thereby enhancing the sense of participation in the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a physical electromagnetic multifunctional experimental instrument proposed by the present invention;

[0021] Figure 2 It is a schematic diagram of the overall top view structure of the present invention;

[0022] Figure 3 Schematic diagram of the structure of the magnetoelectric test assembly of the present invention;

[0023] Figure 4 for Figure 2 A schematic diagram of the structure at center A;

[0024] Figure 5 for Figure 2 A magnified schematic diagram of the structure at point B in the middle;

[0025] Figure 6 for Figure 1 A magnified schematic diagram of the structure at point C in the middle;

[0026] Figure 7 for Figure 3 Enlarged schematic diagram of the structure at point D in the middle.

[0027] In the figure: 1. Base plate; 2. Connecting plate; 3. Horizontal plate; 4. First servo motor; 5. First worm; 6. Iron scraps; 7. Rotating rod; 8. First worm gear; 9. Double-sided board; 10. L-shaped column; 11. Test disc; 12. Annular groove; 13. Sliding block; 14. Placement plate; 15. Second servo motor; 16. Second worm; 17. Second worm gear; 18. First bar magnet; 19. Sliding groove; 20. Third servo motor; 21. Bidirectional threaded rod; 22. U-shaped plate; 23. Limit rod; 24. Fixed rod; 25. Second bar magnet; 26. Fixed block; 27. Wire; 28. Induction block; 29. ​​Ammeter; 30. Battery. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1

[0030] like Figure 1-Figure 7 As shown, a physical electromagnetic multifunctional experimental instrument proposed by the present invention includes a base plate 1 and a connecting plate 2, the base plate 1 and the connecting plate 2 are fixedly connected, the outer side of the connecting plate 2 is movably connected to a double-sided board 9, and an electromagnetism test assembly is provided on the double-sided board 9. The electromagnetism test assembly includes iron filings 6, a test disc 11 and a battery 30 provided on the double-sided board 9, a sliding block 13 and a second worm 16 provided on the test disc 11, and a first bar magnet 18 movably connected to the sliding block 13. The positive and negative poles of the battery 30 are respectively fixedly connected to the two ends of the first bar magnet 18. The sliding block 13 will make a circular motion on the inner side of the test disc 11, and the rotation of the second worm 16 will drive the first bar magnet 18 to rotate. The U-shaped magnet 18 rotates, and when the first bar magnet 18 rotates, it drives the iron filings 6 to move. A magnetoelectric test assembly is provided on the double-sided board 9. The magnetoelectric test assembly includes a bidirectional threaded rod 21, a U-shaped plate 22, a second bar magnet 25 fixedly connected to the inner side of the U-shaped plate 22, an induction block 28 and an ammeter 29 provided on the bidirectional threaded rod 21. The rotation of the bidirectional threaded rod 21 drives the two groups of U-shaped plates 22 to move relative to each other. The movement of the U-shaped plate 22 drives the second bar magnet 25 to move. The magnetic force of the two groups of second bar magnets 25 causes the induction block 28 to generate current, and the current on the induction block 28 is displayed on the ammeter 29.

[0031] The outer side of the connecting plate 2 is fixedly connected to a transverse plate 3 , to which a first servo motor 4 is fixedly connected. The end of the output shaft of the first servo motor 4 is fixedly connected to a first worm 5 . When the first servo motor 4 is started, the first worm 5 is driven to rotate.

[0032] The outer side of the connecting plate 2 is movably connected to a rotating rod 7, and the outer side of the rotating rod 7 is fixedly connected to 8, which is engaged with the first worm 5. The outer side of the rotating rod 7 is fixedly connected to the double-sided board 9. The rotation of 8 will drive the rotating rod 7 to rotate on the outer side of the connecting plate 2.

[0033] An L-shaped column 10 is fixedly connected to the upper part of the double-sided panel 9. The end of the L-shaped column 10 away from the double-sided panel 9 is fixedly connected to the test disc 11. An annular groove 12 is provided inside the test disc 11. The inner side of the annular groove 12 is slidably connected to the sliding block 13. The function of the L-shaped column 10 is to connect the double-sided panel 9 and the test disc 11, and it can mainly play a supporting role for the test disc 11.

[0034] The upper part of the sliding block 13 is fixedly connected to a placement plate 14, the upper part of the placement plate 14 is fixedly connected to a second servo motor 15, the output shaft end of the second servo motor 15 is fixedly connected to a second worm 16, and the start of the second servo motor 15 will drive the second worm 16 to rotate.

[0035] The upper part of the placement plate 14 is rotatably connected to a second worm gear 17, which is meshed with the second worm gear 17 and the second worm 16. The end of the second worm gear 17 away from the placement plate 14 is fixedly connected to the first bar magnet 18, the outer side of the first bar magnet 18 is movably connected to the battery 30, and the lower part of the battery 30 is fixedly connected to the double-sided board 9. The rotation of the second worm gear 17 will drive the first bar magnet 18 to rotate.

[0036] In this embodiment, the specific implementation method is that when in use, the device can be flipped through the double-panel 9, and different tests can be carried out by flipping. The connecting plate 2 mainly plays the role of supporting the double-panel 9. When flipping, the start of the first servo motor 4 will drive the first worm 5 to rotate. Because the first worm 5 and 8 are engaged, the rotation of the first worm 5 will drive 8 to rotate, and the rotation of 8 will drive the rotating rod 7 to rotate on the outside of the connecting plate 2. The rotation of the rotating rod 7 will drive the double-panel 9 to flip. When conducting the electromagnetism test, the two ends of the battery 30 are connected to the two ends of the first bar magnet 18 through a wire. At this time, dragging the first bar magnet 18 can slide on the inner side of the annular groove 12, and the first During the sliding of a bar magnet 18, a magnetic field will appear outside the first bar magnet 18, and the magnetic field will attract the iron chips 6 above the test disc 11 to move regularly, so that the attraction route of the iron chips 6 at different angles can be observed by rotating the first bar magnet 18. The function of the L-shaped column 10 is to connect the double-panel 9 and the test disc 11, and it can mainly play a supporting role for the test disc 11. The start-up of the second servo motor 15 will drive the second worm 16 to rotate. Because the second worm 16 and the second worm gear 17 are engaged, the rotation of the second worm 16 will drive the second worm gear 17 to rotate, and the rotation of the second worm gear 17 will drive the first bar magnet 18 to rotate.

[0037] Example 2

[0038] like Figure 1-Figure 7As shown, based on the first embodiment, sliding grooves 19 are symmetrically opened on the double-sided board 9, and the inner sides of the two sets of sliding grooves 19 are respectively fixedly connected with a third servo motor 20 and a limit rod 23, and the output shaft end of the third servo motor 20 is fixedly connected to the bidirectional threaded rod 21, and the bidirectional threaded rod 21 is rotatably connected between one end away from the third servo motor 20 and the sliding groove 19. The rotation of the output shaft end of the third servo motor 20 will drive the bidirectional threaded rod 21 to rotate.

[0039] The bidirectional threaded rod 21 and the U-shaped plate 22 are threadedly connected, and the end of the U-shaped plate 22 away from the bidirectional threaded rod 21 is slidably connected to the limit rod 23. There are two groups of U-shaped plates 22, and the function of the limit rod 23 is to guide the path of the U-shaped plate 22.

[0040] A fixing rod 24 is fixedly connected to the outer side of the U-shaped plate 22 . The outer side of the fixing rod 24 is fixedly connected to the second bar magnet 25 . The movement of the fixing rod 24 drives the second bar magnet 25 to move.

[0041] The outer sides of the two sets of bidirectional threaded rods 21 are fixedly connected with a wire 27, the outer sides of the wire 27 are fixedly connected to the sensing block 28, and the end of the wire 27 away from the sensing block 28 is fixedly connected to the ammeter 29. By connecting the ammeter 29 with the wire 27, the current generated on the sensing block 28 can be measured.

[0042] In this embodiment, the specific implementation method is that when a magnetoelectric experiment is needed, the double-sided board 9 needs to be reversed and the third servo motor 20 is started. The rotation of the output shaft end of the third servo motor 20 will drive the bidirectional threaded rod 21 to rotate, and the rotation of the bidirectional threaded rod 21 will drive the two sets of U-shaped plates 22 to move relative to each other. The role of the limit rod 23 is to guide the path of the U-shaped plate 22. During the movement of the U-shaped plate 22, the fixed rod 24 will drive the movement of the fixed rod 24. The movement of the second bar magnet 25 will drive the second bar magnet 25 to move. The relative movement of the second bar magnet 25 can adjust the magnetic force between the two sets of second bar magnets 25 to perform a magnetoelectric experiment. The outer side of the bidirectional threaded rod 21 is movably connected to a fixed block 26. Under the action of the magnetic field emitted by the second bar magnet 25, current will appear in the induction block 28. The current generated on the induction block 28 can be measured by connecting the ammeter 29 through the wire 27. By controlling the relative distance between the two sets of second bar magnets 25 and observing the index of the ammeter 29, the change in current on the induction block 28 can be measured.

[0043] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional experimental instrument for physical electromagnetism, comprising a base plate (1) and a connecting plate (2), characterized in that: The bottom plate (1) and the connecting plate (2) are fixedly connected, and the outer side of the connecting plate (2) is movably connected to a double-sided board (9), and an electromagnetism test assembly is provided on the double-sided board (9). The electromagnetism test assembly includes iron scraps (6) provided on the double-sided board (9), a test disc (11) and a battery (30), a sliding block (13) and a second worm (16) provided on the test disc (11), and a first bar magnet (18) movably connected to the sliding block (13). The positive and negative poles of the battery (30) are respectively fixedly connected to the two ends of the first bar magnet (18). The sliding block (13) will make a circular motion on the inner side of the test disc (11), and the rotation of the second worm (16) will drive the first bar magnet (18) to rotate. When the iron (18) rotates, the iron scraps (6) are driven to move. A magnetoelectric test assembly is provided on the double-sided board (9). The magnetoelectric test assembly comprises a bidirectional threaded rod (21) provided on the double-sided board (9), a U-shaped board (22), a second bar magnet (25) fixedly connected to the inner side of the U-shaped board (22), an induction block (28) provided on the bidirectional threaded rod (21), and an ammeter (29). The rotation of the bidirectional threaded rod (21) drives the two groups of U-shaped boards (22) to move relative to each other. The movement of the U-shaped board (22) drives the second bar magnet (25) to move. The magnetic force of the two groups of second bar magnets (25) causes the induction block (28) to generate current. The current on the induction block (28) is displayed on the ammeter (29).

2. A physical electromagnetic multifunctional experimental instrument according to claim 1, characterized in that: A transverse plate (3) is fixedly connected to the outer side of the connecting plate (2), a first servo motor (4) is fixedly connected to the transverse plate (3), and a first worm (5) is fixedly connected to the end of the output shaft of the first servo motor (4).

3. A physical electromagnetic multifunctional experimental instrument according to claim 1, characterized in that: The outer side of the connecting plate (2) is movably connected to a rotating rod (7), the outer side of the rotating rod (7) is fixedly connected to a first worm gear (8), the first worm gear (8) and the first worm (5) are meshed, and the outer side of the rotating rod (7) is fixedly connected to the double-sided board (9).

4. A physical electromagnetic multifunctional experimental instrument according to claim 1, characterized in that: An L-shaped column (10) is fixedly connected to the upper portion of the double-sided board (9), and an end of the L-shaped column (10) away from the double-sided board (9) is fixedly connected to a test disc (11). An annular groove (12) is provided inside the test disc (11), and an inner side of the annular groove (12) is slidably connected to a sliding block (13).

5. A physical electromagnetic multifunctional experimental instrument according to claim 1, characterized in that: The upper portion of the sliding block (13) is fixedly connected to a placement plate (14), the upper portion of the placement plate (14) is fixedly connected to a second servo motor (15), and the end portion of the output shaft of the second servo motor (15) is fixedly connected to a second worm (16).

6. A physical electromagnetism multifunctional experimental instrument according to claim 5, characterized in that: The upper part of the placement plate (14) is rotatably connected to a second worm gear (17), the second worm gear (17) and the second worm (16) are meshed with each other, the end of the second worm gear (17) away from the placement plate (14) is fixedly connected to the first bar magnet (18), the outer side of the first bar magnet (18) is movably connected to the battery (30), and the lower part of the battery (30) is fixedly connected to the double-sided board (9).

7. A physical electromagnetic multifunctional experimental instrument according to claim 1, characterized in that: The double-sided board (9) is symmetrically provided with sliding grooves (19), and the inner sides of the two groups of sliding grooves (19) are respectively fixedly connected with a third servo motor (20) and a limit rod (23), the output shaft end of the third servo motor (20) and the bidirectional threaded rod (21) are fixedly connected, and the bidirectional threaded rod (21) is rotatably connected to the sliding groove (19) at one end away from the third servo motor (20).

8. A physical electromagnetic multifunctional experimental instrument according to claim 1, characterized in that: The bidirectional threaded rod (21) and the U-shaped plate (22) are threadedly connected, and one end of the U-shaped plate (22) away from the bidirectional threaded rod (21) is slidably connected to the limiting rod (23). There are two groups of U-shaped plates (22).

9. A physical electromagnetic multifunctional experimental instrument according to claim 1, characterized in that: The outer side of the U-shaped plate (22) is fixedly connected to a fixing rod (24), and the outer side of the fixing rod (24) is fixedly connected to the second bar magnet (25).

10. The multifunctional physical electromagnetic experimental instrument according to claim 1, characterized in that: The outer sides of the two groups of bidirectional threaded rods (21) are fixedly connected to a fixed block (26), the inner side of the fixed block (26) is fixedly connected to a wire (27), the outer side of the wire (27) is fixedly connected to a sensing block (28), and the end of the wire (27) away from the sensing block (28) is fixedly connected to an ammeter (29).

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