CN203746314U

CN203746314U - Electromagnetic experiment operation platform

Info

Publication number: CN203746314U
Application number: CN201420149471.4U
Authority: CN
Inventors: 高忠青
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-03-29
Filing date: 2014-03-29
Publication date: 2014-07-30
Anticipated expiration: 2024-03-29

Abstract

The utility model discloses an electromagnetic experiment operation platform which comprises a base plate, a top board a shoe plate between the base plate and the top board, a lower magnet under the base plate, an upper magnet above the top board and an experiment board arranged on the base plate, wherein the upper magnet and the lower magnet are opposite in polarity. The electromagnetic experiment operation platform further comprises a plurality of iron nails, two metal guide rails, a metallic rod, a rectangular wire frame, a rotor model, an ammeter and a dc power supply. The electromagnetic experiment operation platform is simple in structure, can carry out magnetic field, magnetic induction line, electromagnetic induction, motor and generator experiments, and allows students to understand electromagnetic phenomenon and related knowledge directly.

Description

A kind of experiment of electromagnetism operating platform

Technical field

The utility model relates to a kind of physics teaching experiment platform, particularly a kind of experiment of electromagnetism operating platform.

Background technology

In physics teaching in secondary school practice process, need to lecture the relevant knowledge of electromagnet phenomenon, due to this knowledge point, to relate to some concepts more abstract, only be difficult to be described clearly with language, even if explanation has been understood, because student does not have direct feel, some knowledge point, time one length is also easily forgotten, be unfavorable for the grasp of student to this knowledge point, need to carry out magnetic field, magnetic induction line demonstration, electromagnetic induction experiment, motor demonstration, generator demonstration etc. for this reason, but owing to lacking necessary apparatus for demonstrating, thereby demonstration poor effect.

Summary of the invention

Problem to be solved in the utility model is: a kind of simple in structure, experiment of electromagnetism operating platform that carries out multiple experiment of electromagnetism that can be visual in image is provided.

In order to address the above problem, experiment of electromagnetism operating platform of the present utility model, comprise base plate and top board, between described base plate and top board, be provided with back up pad, the below of described base plate is provided with lower magnet, and the top of described top board is provided with magnet, and the polarity of described upper magnet and lower magnet is contrary, on described base plate, be also provided with a brassboard, also comprise several iron nails, two metal guide rail, Metallic rod, rectangular wire frame, rotator model, reometer and direct supplys.

Further, experiment of electromagnetism operating platform of the present utility model, described metal guide rail comprises guide rail body and is fixed on the guide rail binding post of guide rail body one end.

Further, experiment of electromagnetism operating platform of the present utility model, the wire frame binding post that described rectangular wire frame comprises wire frame body, is wrapped in the wire frame coil on wire frame body and is connected with two end points of wire frame coil.

Further, experiment of electromagnetism operating platform of the present utility model, described rotator model comprises rotor body, be wrapped in the rotor winding on rotor body, two bracing frames that are fixed on the rotating shaft of two ends of rotor and rotate for supporting revolving shaft, support frame as described above is arranged on the left and right sides of rotor, described rotating shaft is inserted on bracing frame, described rotating shaft is provided with two slip rings, the outside of described each slip ring is equipped with one and abuts in the fixed block that being used on slip ring conducted electricity, described each fixed block is all connected with a rotor wiring post, the two ends of described rotor winding are connected with two slip rings respectively.

The beneficial effect that the utility model is obtained is: (1) is simple in structure; (2) can carry out magnetic field, magnetic induction line, electromagnetic induction, motor and generator experiment, can make student understand electromagnet phenomenon vivid, intuitively and grasp this knowledge point.

Summary of the invention

As shown in Figure 1, experiment of electromagnetism operating platform of the present utility model, comprise base plate 5 and top board 2, between described base plate 5 and top board 2, be provided with back up pad 3, the below of described base plate 5 is provided with lower magnet 6, and the top of described top board 2 is provided with magnet 1, and the polarity of described upper magnet 1 and lower magnet 6 is contrary, on described base plate 5, be also provided with a brassboard 4, also comprise several iron nails 19, two metal guide rail, Metallic rod 22, rectangular wire frame, rotator model, reometer 20 and direct supplys 21, as shown in Figure 4, described metal guide rail comprises guide rail body 17 and the guide rail binding post 18 that is fixed on guide rail body 17 one end, as shown in Figure 2, the wire frame binding post 9 that described rectangular wire frame comprises wire frame body 7, is wrapped in the wire frame coil 8 on wire frame body 7 and is connected with two end points of wire frame coil 8, as shown in Figure 3, described rotator model comprises rotor body 10, be wrapped in the rotor winding 11 on rotor body 10, two bracing frames 15 that are fixed on the rotating shaft 14 at rotor body 10 two ends and rotate for supporting revolving shaft 14, support frame as described above 15 is arranged on the left and right sides of rotor body 10, described rotating shaft 14 is inserted on bracing frame 15, described rotating shaft 14 is provided with two slip rings 16, the outside of described each slip ring 16 is equipped with one and abuts in the fixed block 13 that being used on slip ring 16 conducted electricity, described each fixed block 13 is all connected with a rotor wiring post 12, the two ends of described rotor winding 11 are connected with two slip rings 16 respectively.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the structural representation of rectangular wire frame.

Fig. 3 is the structural representation of rotator model.

Fig. 4 is the structural representation of metal guide rail.

Fig. 5 is the structural representation of embodiment 1.

Fig. 6 is the structural representation of embodiment 2.

Fig. 7 is the structural representation of embodiment 3.

Fig. 8 is the structural representation of embodiment 4.

Fig. 9 is the structural representation of embodiment 5.

In figure: 1, upper magnet, 2, top board, 3, back up pad, 4, brassboard, 5, base plate, 6, lower magnet, 7, wire frame body, 8, wire frame coil, 9, wire frame binding post, 10, rotor body, 11, rotor winding, 12, rotor wiring post, 13, fixed block, 14, rotating shaft, 15, bracing frame, 16, slip ring, 17, guide rail body, 18, guide rail binding post, 19, iron nail, 20, reometer, 21, direct supply, 22, Metallic rod.

Embodiment 1

As shown in Figure 5, brassboard 4 is placed on to the upper surface of base plate 5, and then on base plate 5, place several iron nails 19, move iron nail 19 with hand, in the process of moving, except the gravity of iron nail 19 self, also can feel that other acting force puts on iron nail 19, this acting force is magnetic force, by the existence of magnetic force, and the existence that perceives magnetic field that can be vivid.

Several iron nails 19 are placed on brassboard 4, under the effect of magnetic field magnetic force, vertical being placed on brassboard 4 of iron nail 19 meeting, because iron nail 19 is positioned in the magnetic field that upper magnet 1 and lower magnet 6 form, thereby the direction of the instruction magnetic line of force that can be practical, thereby make student understand the direction of the magnetic line of force and the relation in magnetic field.

Embodiment 2

As shown in Figure 6, rectangular wire frame is placed between base plate 5 and top board 2, wire frame binding post 9 is connected with reometer, then hand-held rectangular wire frame, makes rectangular wire frame parallel with surface level, then moves left and right rectangular wire frame cutting magnetic line, in the process of cutting, reometer 20 has electric current and flows through, and meanwhile, the pointer of reometer 20 also can indicate the size of electric current.

Hand-held rectangular wire frame moves up and down, and now, due to not cutting magnetic line of wire frame coil 8, does not have electric current current flowing table 20, does not also have the instruction of size of current.

By this experiment, can confirm conductor cutting magnetic line, there is electric current to flow through conductor, if not cutting magnetic line of conductor does not have electric current to produce.

Embodiment 3

As shown in Figure 7, rotator model and brassboard 4 are put on the upper surface of base plate 5, made rotator model in the magnetic field that upper magnet 1 and lower magnet 6 form, then rotor wiring post 12 is connected with direct supply 21, after opening the switch on direct supply 21, rotor will ceaselessly rotate.

This experiment can show the principle of work of direct current motor intuitively, is conducive to students.

Embodiment 4

As shown in Figure 8, rotator model and brassboard 4 are put on the upper surface of base plate 5, make rotator model in the magnetic field that upper magnet 1 and lower magnet 6 form, then rotor wiring post 12 is connected with reometer 20, at the uniform velocity rotor body 10, make ceaselessly cutting magnetic line of rotor body 10, now in reometer 20, just have electric current to flow through, and by pointer, the size of this electric current is indicated.

This experiment can show the principle of work of Dyn. intuitively, is conducive to students.

Embodiment 5

As shown in Figure 9, metal guide rail is placed on brassboard 4, and then metal guide rail and brassboard 4 are placed on base plate 5, guide rail binding post 18 is connected with direct supply 21, again a Metallic rod 22 is placed in two metal guide rail, Metallic rod 22 is perpendicular with metal guide rail, finally opens the switch of direct supply 21, now can observe Metallic rod 22 and slide along the length direction of metal guide rail.

After the both positive and negative polarity of direct supply 21 is exchanged, be connected with guide rail binding post 18, open the switch of direct supply 21, now Metallic rod 22 can be slided along contrary direction.

This experiment can confirm intuitively, and the direction of conductor cutting magnetic line is relevant to the direction in magnetic field and sense of current, contributes to this knowledge electricity of students simultaneously.

Claims

1. an experiment of electromagnetism operating platform, it is characterized in that: comprise base plate (5) and top board (2), between described base plate (5) and top board (2), be provided with back up pad (3), the below of described base plate (5) is provided with lower magnet (6), the top of described top board (2) is provided with magnet (1), the polarity of described upper magnet (1) and lower magnet (6) is contrary, on described base plate (5), be also provided with a brassboard (4), also comprise several iron nails (19), two metal guide rail, Metallic rod (22), rectangular wire frame, rotator model, reometer (20) and direct supply (21).

2. experiment of electromagnetism operating platform according to claim 1, is characterized in that: described metal guide rail comprises guide rail body (17) and is fixed on the guide rail binding post (18) of guide rail body (17) one end.

3. experiment of electromagnetism operating platform according to claim 1, is characterized in that: the wire frame binding post (9) that described rectangular wire frame comprises wire frame body (7), is wrapped in the wire frame coil (8) on wire frame body (7) and is connected with two end points of wire frame coil (8).

4. experiment of electromagnetism operating platform according to claim 1, it is characterized in that: described rotator model comprises rotor body (10), be wrapped in the rotor winding (11) on rotor body (10), two bracing frames (15) that are fixed on the rotating shaft (14) at rotor body (10) two ends and rotate for supporting revolving shaft (14), support frame as described above (15) is arranged on the left and right sides of rotor body (10), described rotating shaft (14) is inserted on bracing frame (15), described rotating shaft (14) is provided with two slip rings (16), the outside of described each slip ring (16) is equipped with one and abuts in the fixed block (13) that being used on slip ring (16) conducted electricity, described each fixed block (13) is all connected with a rotor wiring post (12), the two ends of described rotor winding (11) are connected with two slip rings (16) respectively.