CN211455043U - Teaching device for displaying induced current - Google Patents
Teaching device for displaying induced current Download PDFInfo
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- CN211455043U CN211455043U CN202020081661.2U CN202020081661U CN211455043U CN 211455043 U CN211455043 U CN 211455043U CN 202020081661 U CN202020081661 U CN 202020081661U CN 211455043 U CN211455043 U CN 211455043U
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Abstract
The utility model discloses a teaching device for show induced-current. The device comprises an operating platform, wherein a jumping ring assembly is arranged on a table top of the operating platform, the jumping ring assembly comprises an iron core fixed on the table top and a coil framework arranged outside the iron core, one part of the iron core extends out of the coil framework, an enameled wire is wound on the coil framework, a guide rail stand column is sleeved on one part of the iron core extending out of the coil framework, a jumping slip ring is sleeved on the guide rail stand column, and the guide rail stand column is made of a non-magnetic material; the jumping slip ring is made of aluminum alloy, the coil framework and the enameled wire form a coil component, and the coil component is connected with an alternating current power supply or a direct current pulse power supply. The device demonstrates the effect of eddy current and the interaction between magnetic fields through an image-bearing experimental simulation device, so that visitors can know the knowledge about electromagnetism.
Description
Technical Field
The utility model belongs to physics science popularization field relates to an induced-current's apparatus that produces, and specifically speaking is a teaching device for showing induced-current.
Background
The induction current is the current which is generated in the original magnetic field by the closed loop and prevents the magnetic flux of the original magnetic field from changing; meaning that a conductor placed in a changing magnetic flux is closed into a loop, the electromotive force drives electrons to flow, and an induced current is formed.
In general, when a part of the conductor of the closed loop moves in a magnetic field to cut the magnetic induction line, the magnetic flux in the closed loop changes, and an induced electromotive force is generated in the closed loop, so that a current is generated, which is called an induced current.
Disclosure of Invention
An object of the utility model is to provide a teaching device for showing induced-current, this device presents audiences with audio-visual simple and easy device with the production of induced-current, arouses the demand of deeper study when watching equipment.
In order to achieve the purpose, the teaching device for displaying induced current comprises an operation table, wherein a jumping ring component is installed on a table top of the operation table, the jumping ring component comprises an iron core fixed on the table top and a coil framework installed outside the iron core, one part of the iron core extends out of the coil framework, an enameled wire is wound on the coil framework, a guide rail stand column is sleeved on one part of the iron core extending out of the coil framework, a jumping slip ring is sleeved on the guide rail stand column, and the guide rail stand column is made of a non-magnetic material; the jumping slip ring is made of aluminum alloy, the coil framework and the enameled wire form a coil component, and the coil component is connected with an alternating current power supply or a direct current pulse power supply.
The iron core is fixed on the table top through iron core screws, the coil framework is formed by connecting coil stand columns between an upper fixing plate and a stand column base, an upper cover is installed at the upper end of the upper fixing plate, a lower seat is installed at the bottom of the stand column base, and the coil framework is installed on the table top through operating table screws; the guide rail upright post is a hollow cylinder.
The jumping ring assembly is externally provided with a protective cover, the protective cover is a 6 mm-thick transparent organic glass tube, and the protective cover is fixedly connected with the table top through protective cover screws.
The coil framework is made of epoxy resin.
The tail end of the guide rail upright post is provided with a joint, and a steel wire rope is arranged on the joint, so that the anti-static function of the protection device is achieved.
The device comprises a control module, wherein the control module comprises a power supply system, a signal acquisition system, a control system, an execution unit and a network system, the power supply system is respectively connected with the signal acquisition system, the execution unit, the control system and the network system, the control system is connected with the network system, the signal acquisition system is connected with the control system, and the control system is connected with the execution unit.
And a control switch is installed on the table top of the operating table, and the control system is connected with the control switch.
The execution unit is a circuit breaker between the coil component and an alternating current power supply or a direct current pulse power supply.
The signal acquisition system receives a control switch signal, the signal acquisition unit transmits the control switch signal to the control system, the control system outputs a control coil to be powered on or powered off through internal program operation, an on-off electric signal is transmitted to the execution unit, and the execution is completed through the execution unit.
A teaching device for show induced-current, its beneficial effect lies in: the device demonstrates the effect of eddy current and the interaction between magnetic fields through an experimental simulation device with an image, so that visitors can know the knowledge about electromagnetism.
Drawings
FIG. 1 is a schematic view of the present apparatus;
FIG. 2 is an enlarged schematic view of a structural part of the device;
FIG. 3 is an enlarged schematic view of a part of the structure of the device;
FIG. 4 is a schematic view of the present apparatus;
FIG. 5 is a schematic view of the present apparatus;
FIG. 6 is a diagram showing the coil and the magnetic field of the coil of the present apparatus;
FIG. 7 is a block diagram of a control system of the apparatus;
in the figure: 1-an operation table, 2-blank pressing, 3-a protective cover, 4-a jumping ring assembly, 5-an upright column base, 6-an iron core screw, 7-an operation table screw, 8-a protective cover screw, 9-a guide rail upright column, 10-a control switch, 11-an enameled wire, 12-a coil framework, 13-a coil upright column, 14-an upper fixing plate, 15-an upper cover, 16-a lower base, 17-a jumping slip ring, 18-a joint, 19-a steel wire rope and 20-an iron core.
Detailed Description
Example 1
As shown in fig. 1-7, the teaching device for displaying induced current of the present invention comprises an operation table 1, wherein a jumping ring assembly 4 is installed on a table top of the operation table 1, the jumping ring assembly 4 includes an iron core 20 fixed on the table top and a coil frame 12 installed outside the iron core 20, a part of the iron core 20 extends out of the coil frame 12, an enameled wire 11 is wound on the coil frame 12, a part of the iron core 20 extending out of the coil frame 12 is sleeved with a guide rail upright post 9, the guide rail upright post 9 is sleeved with a jumping slip ring 17, and the guide rail upright post 9 is made of a non-magnetic material; the jumping slip ring 17 is made of aluminum alloy, the coil framework 12 and the enameled wire 11 form a coil component, and the coil component is connected with an alternating current power supply or a direct current pulse power supply; the iron core 20 is fixed on the table top through iron core screws 6, the coil framework 12 is formed by connecting coil upright columns 13 between an upper fixing plate 14 and an upright column base 5, an upper cover 15 is installed at the upper end of the upper fixing plate 14, a lower seat 16 is installed at the bottom of the upright column base 5, and the coil framework 12 is installed on the table top through operating table screws 7; the guide rail upright post 9 is a hollow cylinder; a protective cover 3 is arranged outside the jumping ring assembly 4, the protective cover 3 is a transparent organic glass tube with the thickness of 6mm, and the protective cover 3 is fixedly connected with the table top through a protective cover screw 8; the coil framework 12 is made of epoxy resin; the tail end of the guide rail upright post 9 is provided with a joint 18, and a steel wire rope 19 is arranged on the joint 18.
The device comprises a control module, wherein the control module comprises a power supply system, a signal acquisition system, a control system, an execution unit and a network system, the power supply system is respectively connected with the signal acquisition system, the execution unit, the control system and the network system, the control system is connected with the network system, the signal acquisition system is connected with the control system, and the control system is connected with the execution unit.
A control switch 10 is installed on the table top of the operating table, and a control system is connected with the control switch 10.
The execution unit is a circuit breaker between the coil component and an alternating current power supply or a direct current pulse power supply.
The signal acquisition system receives a signal of the control switch 10, the signal acquisition unit transmits the signal of the control switch 10 to the control system, the control system outputs a power-on/off state of the control coil through internal program operation, transmits a power-on/off electric signal to the execution unit, and the execution is completed through the execution unit.
When the device is used, the contact outer edge of the protective cover 3 of the device and the table top of the operating platform 1 is provided with an outward turn, the outward turn is fixedly connected with the table top of the operating platform 1 through a protective cover screw 8, a blank pressing 2 is arranged between the table top of the operating platform 1 and the protective cover 3, and a jumping slip ring 17 is an aluminum ring with the specification of phi 76 phi 52 phi 10 mm; the diameter of the guide rail upright post 9 is phi 50 mm; adopting soft iron as an iron core;
alternating current or direct current pulse current generates an alternating magnetic field after passing through the coil, an induced current is generated in the small aluminum ring sleeved on the soft iron, the direction of the induced current magnetic field is opposite to that of the coil magnetic field and is mutually repulsive, and the small aluminum ring is supported by invisible repulsive force.
Claims (5)
1. A teaching device for displaying induced current, comprising an operation table (1), characterized in that: the jumping ring assembly (4) is mounted on the table top of the operating table (1), the jumping ring assembly (4) comprises an iron core (20) fixed on the table top and a coil framework (12) mounted outside the iron core (20), a part of the iron core (20) extends out of the coil framework (12), an enameled wire (11) is wound on the coil framework (12), a guide rail stand column (9) is sleeved on a part of the iron core (20) extending out of the coil framework (12), a jumping slip ring (17) is sleeved on the guide rail stand column (9), and the guide rail stand column (9) is made of a non-magnetic material; the jumping slip ring (17) is made of aluminum alloy, the coil framework (12) and the enameled wire (11) form a coil component, and the coil component is connected with an alternating current power supply or a direct current pulse power supply.
2. Teaching apparatus for displaying induced current according to claim 1, wherein: the coil framework (12) is formed by connecting a coil upright post (13) between an upper fixing plate (14) and an upright post base (5), an upper cover (15) is installed at the upper end of the upper fixing plate (14), a lower base (16) is installed at the bottom of the upright post base (5), and the coil framework (12) is installed on the table top through an operation table screw (7); the guide rail upright post (9) is a hollow cylinder.
3. Teaching apparatus for displaying induced current according to claim 2, wherein: jump ring subassembly (4) externally mounted has safety cover (3), safety cover (3) are 6mm thick transparent organic glass pipe, safety cover (3) pass through safety cover screw (8) fixed connection with the mesa.
4. Teaching apparatus for displaying induced current according to claim 2, wherein: the coil framework (12) is made of epoxy resin.
5. Teaching apparatus for displaying induced current according to claim 2, wherein: the tail end of the guide rail upright post (9) is provided with a joint (18), and the joint (18) is provided with a steel wire rope (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020081661.2U CN211455043U (en) | 2020-01-15 | 2020-01-15 | Teaching device for displaying induced current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020081661.2U CN211455043U (en) | 2020-01-15 | 2020-01-15 | Teaching device for displaying induced current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211455043U true CN211455043U (en) | 2020-09-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020081661.2U Active CN211455043U (en) | 2020-01-15 | 2020-01-15 | Teaching device for displaying induced current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211455043U (en) |
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2020
- 2020-01-15 CN CN202020081661.2U patent/CN211455043U/en active Active
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