CN213582731U

CN213582731U - Electromagnetic induction demonstration test device for teaching

Info

Publication number: CN213582731U
Application number: CN202022285009.5U
Authority: CN
Inventors: 余悦
Original assignee: Xiamen New Education Technology Co ltd
Current assignee: Xiamen New Education Technology Co ltd
Priority date: 2020-10-14
Filing date: 2020-10-14
Publication date: 2021-06-29
Anticipated expiration: 2030-10-14

Abstract

The utility model discloses an electromagnetic induction demonstration test device for teaching, including the demonstration frame, the rectangular channel has been seted up to the one end of demonstration frame top outer wall center department, and demonstrates the frame and has offered the circular slot near one side of rectangular channel, and the demonstration frame is close to one side of circular slot and installs the backup pad through the screw, and the inside of rectangular channel and circular slot installs lamp stand and passageway seat through the screw respectively, and the inside of passageway seat is pegged graft and is had the demonstration passageway. The utility model discloses the permanent magnet is in the inside whereabouts of demonstration passageway for the permanent magnet is by induction coil cutting, and effectual help student has deepened student's understanding to the understanding of lenz's law, has promoted student's interest in learning, and the electricity pushes away the jar and highly adjusts the permanent magnet through the electromagnetism iron plate, makes the demonstration passageway of the adaptable co-altitude of permanent magnet, and the collocation use of locating lever and locating hole, makes the permanent magnet carry out more stable when highly adjusting.

Description

Electromagnetic induction demonstration test device for teaching

Technical Field

The utility model relates to a teaching demonstration test device technical field especially relates to an electromagnetic induction demonstration test device for teaching.

Background

In the electricity and magnetism chapters in the physics subjects of junior middle school and high school, the teaching outline requires students to master the magnetic field direction, the current direction in the electrified conductor, the stress direction of the electrified conductor in the magnetic field and the dialectical relationship of the three, and relates to the concept of direction.

The existing teaching demonstration instrument generates a magnetic field by applying the horseshoe-shaped magnet, so that the track of the force movement of the electrified conductor in the magnetic field is too short and easy to deform, the phenomenon is not obvious, and in addition, the permanent magnet cannot be effectively adjusted according to the change of the height of the demonstration channel. Therefore, it is necessary to design an electromagnetic induction demonstration testing device for teaching to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving and having current teaching demonstration instrument among the prior art, using the hoof shape magnet to produce magnetic field, too short to the orbit that makes circular telegram conductor atress motion in magnetic field, and warp easily, the phenomenon is not obvious, in addition, the permanent magnet can't carry out the shortcoming of effectual regulation according to the change of demonstration channel height, and the electromagnetic induction demonstration test device for teaching that proposes.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an electromagnetic induction demonstration test device for teaching, includes the demonstration frame, the rectangular channel has been seted up to the one end of demonstration frame top outer wall center department, and demonstrates the one side that the frame is close to the rectangular channel and has seted up the circular slot, the backup pad is installed through the screw to one side that the demonstration frame is close to the circular slot, and the inside of rectangular channel and circular slot installs lamp stand and passageway seat through the screw respectively, the inside of passageway seat is pegged graft and is had the demonstration passageway, and around being equipped with induction coil on the lateral wall of demonstration passageway, the terminal has all been welded at induction coil's both ends, the support arm that is L type structure distribution is installed through the screw in the center department of backup pad top outer wall, and the other end that the backup pad was kept away from to the support arm installs the electric propulsion jar through the screw.

Furthermore, a horizontal ball is arranged on the outer wall of one side of the top of the demonstration rack, and anti-skidding rubber pads are bonded on the periphery of the outer wall of the bottom of the demonstration rack.

Furthermore, an electromagnet plate is installed on the output end of the electric pushing cylinder through screws, and a permanent magnet is attracted to the outer wall of the bottom of the electromagnet plate.

Furthermore, the electric propulsion cylinder is welded with a positioning plate close to the outer side wall of the electromagnet plate, positioning holes are formed in the periphery of the outer wall of the top of the positioning plate, positioning rods penetrating through the positioning holes are installed on the periphery of the outer wall of the top of the electromagnet plate through screws, and the positioning rods are in sliding connection with the positioning holes.

Further, the ear seat is all installed through the screw in the center department of lamp stand both sides outer wall, and the axle center department of ear seat has seted up the wiring screw, the internal thread of wiring screw is connected with the wiring bolt, the axle center department threaded connection of lamp stand top outer wall has the pilot lamp, and the switch key is installed through the screw in the center department of the positive outer wall of lamp stand.

Furthermore, the outer wall of the wiring terminal is wound with a wiring, and the other end of the wiring terminal, which is far away from the wiring terminal, is fixed inside the wiring screw hole through a wiring bolt.

The utility model has the advantages that:

1. the utility model discloses a permanent magnet is in the inside whereabouts of demonstration passageway for the permanent magnet is induction coil cutting, and effectual help student has deepened student's understanding to the understanding of lenz's law, has promoted student's interest in learning, novel structure, reasonable in design, and the practicality is strong.

2. Through the electric push cylinder that sets up, the electric push cylinder passes through the electromagnetism iron plate and adjusts the height of permanent magnet for the adaptable not demonstration passageway of co-altitude of permanent magnet, and the collocation use of locating lever and locating hole makes permanent magnet carry out stability more when altitude mixture control, compact structure, convenient operation is fit for promoting.

3. Through the demonstration frame that sets up, the demonstration frame is more stable under the effect of anti-skidding cushion, and horizontal ball makes the demonstration frame can be in a horizontal position when placing, and then has promoted the accuracy of demonstration test data.

Drawings

Fig. 1 is a schematic structural view of an electromagnetic induction demonstration test device for teaching according to the present invention;

fig. 2 is an explosion structure diagram of the electromagnetic induction demonstration testing device for teaching provided by the utility model;

FIG. 3 is a schematic view of an electric pushing cylinder structure of the electromagnetic induction demonstration testing device for teaching provided by the utility model;

fig. 4 is the utility model provides a lamp stand structure schematic diagram of electromagnetic induction demonstration test device for teaching.

In the figure: the demonstration device comprises a demonstration rack 1, an antiskid rubber mat 2, a rectangular groove 3, a circular groove 4, a supporting plate 5, a supporting arm 6, an electric pushing cylinder 7, a lamp holder 8, a channel seat 9, a demonstration channel 10, an induction coil 11, a wiring post 12, a wiring wire 13, a positioning plate 14, an electromagnet plate 15, a positioning rod 16, a positioning hole 17, a permanent magnet 18, an indicator bulb 19, an on-off key 20, an ear seat 21, a wiring screw hole 22, a wiring bolt 23 and a horizontal ball 24.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Please refer to fig. 1 to 4 simultaneously, an electromagnetic induction demonstration test device for teaching comprises a demonstration rack 1, a rectangular groove 3 is disposed at one end of the center of the outer wall of the top of the demonstration rack 1, a circular groove 4 is disposed at one side of the demonstration rack 1 close to the rectangular groove 3, a support plate 5 is mounted at one side of the demonstration rack 1 close to the circular groove 4 through screws, a lamp holder 8 and a channel holder 9 are respectively mounted inside the rectangular groove 3 and the circular groove 4 through screws, a demonstration channel 10 is inserted inside the channel holder 9, an induction coil 11 is wound on the outer side wall of the demonstration channel 10, binding posts 12 are welded at both ends of the induction coil 11, a support arm 6 distributed in an L-shaped structure is mounted at the center of the outer wall of the top end of the support plate 5 through screws, an electric pushing cylinder 7 is mounted at the other end of the support arm 6 far away from the support plate 5 through screws, the model of the electric pushing cylinder 7 is a diab, the electric pushing cylinder 7 is vertically arranged right above the axis of the demonstration channel 10, the permanent magnet 18 falls in the demonstration channel 10, the permanent magnet 18 is cut by the induction coil 11, the current generated when the permanent magnet 18 cuts the induction coil 11 is conducted to the indicating lamp bulb 19 through the wiring 13 by the induction coil 11, the student is effectively helped to understand the Lenz law, the understanding of the student is deepened, and the learning interest of the student is promoted.

Further, be provided with horizontal ball 24 on the one side outer wall at demonstration frame 1 top, and demonstrate that 1 bottom outer wall all bonds all around has anti-skidding cushion 2, and demonstration frame 1 is more stable under anti-skidding cushion 2's effect, and horizontal ball 24 makes demonstration frame 1 can be in a horizontal position when placing.

Furthermore, an electromagnet plate 15 is mounted on the output end of the electric pushing cylinder 7 through a screw, a permanent magnet 18 is attracted on the outer wall of the bottom of the electromagnet plate 15, the permanent magnet 18 can be attracted after the electromagnet plate 15 is connected with current, and the permanent magnet 18 can freely fall after the electromagnet plate 15 is disconnected with current.

Further, the electric pushing cylinder 7 is welded with the positioning plate 14 close to the outer side wall of the electromagnet plate 15, the positioning holes 17 are formed in the periphery of the outer wall of the top of the positioning plate 14, the positioning rods 16 penetrating through the positioning holes 17 are mounted on the periphery of the outer wall of the top of the electromagnet plate 15 through screws, the positioning rods 16 and the positioning holes 17 are in sliding connection, and the positioning rods 16 and the positioning holes 17 are used in matching mode, so that the permanent magnet 18 is more stable in height adjustment.

Furthermore, the center of the outer wall of the two sides of the lamp holder 8 is provided with an ear seat 21 through a screw, the axis of the ear seat 21 is provided with a wiring screw hole 22, the internal thread of the wiring screw hole 22 is connected with a wiring bolt 23, the axis of the outer wall of the top of the lamp holder 8 is connected with an indicator bulb 19 through a screw, and the center of the outer wall of the front side of the lamp holder 8 is provided with an on-off switch 20 through a screw.

Further, the winding has wiring 13 on the outer wall of terminal 12, and wiring 13 keeps away from the other end of terminal 12 and passes through wiring bolt 23 to be fixed in the inside at wiring screw 22, and wiring bolt 23 and wiring screw 22 make wiring 13 be convenient for connect and dismantle more, have promoted student's hands-on ability and learning interest.

The working principle is as follows: when the electromagnetic induction demonstration test device for teaching is used, the demonstration rack 1 is more stable under the action of the anti-skid rubber mat 2, and the horizontal ball 24 ensures that the demonstration rack 1 can be in a horizontal position when being placed, thereby improving the accuracy of the demonstration test data, the permanent magnet 18 falls down in the demonstration channel 10, the permanent magnet 18 is cut by the induction coil 11, the induction coil 11 conducts the current generated by cutting the induction coil 11 by the permanent magnet 18 to the indicating lamp bulb 19 through the wiring 13, the understanding of students to the Lenz law is effectively helped, the understanding of students is deepened, the learning interest of students is promoted, the height of the permanent magnet 18 is adjusted by the electric pushing cylinder 7 through the electromagnet plate 15, so that the permanent magnet 18 can adapt to demonstration channels with different heights, and the positioning rod 16 and the positioning hole 17 are matched for use, so that the permanent magnet 18 is more stable when the height is adjusted.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The electromagnetic induction demonstration test device for teaching comprises a demonstration rack (1) and is characterized in that a rectangular groove (3) is formed in one end of the center of the outer wall of the top of the demonstration rack (1), a circular groove (4) is formed in one side, close to the rectangular groove (3), of the demonstration rack (1), a supporting plate (5) is installed on one side, close to the circular groove (4), of the demonstration rack (1) through screws, a lamp holder (8) and a channel seat (9) are installed inside the rectangular groove (3) and the circular groove (4) respectively through screws, a demonstration channel (10) is inserted into the channel seat (9), an induction coil (11) is wound on the outer side wall of the demonstration channel (10), binding posts (12) are welded at two ends of the induction coil (11), and supporting arms (6) which are distributed in an L-shaped structure are installed at the center of the outer wall of the top end of the supporting plate (5) through screws, and the other end of the supporting arm (6) far away from the supporting plate (5) is provided with an electric pushing cylinder (7) through a screw, and the electric pushing cylinder (7) is vertically arranged right above the axle center of the demonstration channel (10).

2. The electromagnetic induction demonstration test device for teaching according to claim 1, characterized in that a horizontal ball (24) is arranged on the outer wall of one side of the top of the demonstration rack (1), and anti-skid rubber pads (2) are bonded around the outer wall of the bottom of the demonstration rack (1).

3. The electromagnetic induction demonstration test device for teaching of claim 1, wherein the output end of the electric pushing cylinder (7) is provided with an electromagnet plate (15) through a screw, and the bottom outer wall of the electromagnet plate (15) is attracted with a permanent magnet (18).

4. The electromagnetic induction demonstration test device for teaching of claim 3, wherein the positioning plate (14) is welded on the outer side wall of the electric pushing cylinder (7) close to the electromagnet plate (15), the positioning holes (17) are formed in the periphery of the outer wall of the top of the positioning plate (14), the positioning rods (16) penetrating through the positioning holes (17) are installed on the periphery of the outer wall of the top of the electromagnet plate (15) through screws, and the positioning rods (16) are in sliding connection with the positioning holes (17).

5. The electromagnetic induction demonstration test device for teaching of claim 1, characterized in that the ear seats (21) are mounted at the centers of the outer walls of the two sides of the lamp holder (8) through screws, and the axis of the ear seats (21) is provided with wiring screw holes (22), the internal threads of the wiring screw holes (22) are connected with wiring bolts (23), the axis of the outer wall of the top of the lamp holder (8) is connected with an indicator bulb (19) through threads, and the center of the outer wall of the front side of the lamp holder (8) is provided with a switch key (20) through screws.

6. The electromagnetic induction demonstration test device for teaching according to claim 1, wherein the wiring (13) is wound on the outer wall of the wiring terminal (12), and the other end of the wiring (13) far away from the wiring terminal (12) is fixed inside the wiring screw hole (22) through a wiring bolt (23).