CN214377241U

CN214377241U - Electromagnetic induction experimental device

Info

Publication number: CN214377241U
Application number: CN202120705013.4U
Authority: CN
Inventors: 王立涛; 雷琼
Original assignee: Shaanxi Polytechnic Institute
Current assignee: Shaanxi Polytechnic Institute
Priority date: 2021-04-07
Filing date: 2021-04-07
Publication date: 2021-10-08
Anticipated expiration: 2031-04-07

Abstract

The utility model relates to the technical field of electromagnetic induction experiments, in particular to an electromagnetic induction experiment device, which comprises a test bed, wherein a horseshoe-shaped magnet is fixed on the test bed, a coil is arranged above the horseshoe-shaped magnet and passes through the horseshoe-shaped magnet, a coil driving mechanism is arranged at one side of the horseshoe-shaped magnet, two mutually symmetrical coil fixing mechanisms are movably arranged on the coil driving mechanism, the coil is fixed between the two coil fixing mechanisms, a sensitive ammeter and a switch are also arranged on the test bed, one end of the coil is connected with a negative terminal on the sensitive ammeter through a lead, the driving coil of the electromagnetic induction experiment device can realize the horizontal movement cutting of a magnetic induction wire through the arrangement of the coil driving mechanism, and the design of the graduated scale on the coil can realize the accurate and visual measurement of the moving distance of the coil, therefore, the moving area of the coil can be accurately known, and the influence of the moving area of the coil on the electromotive force generated by electromagnetic induction can be further known.

Description

Electromagnetic induction experimental device

Technical Field

The utility model relates to an electromagnetic induction experiment technical field specifically is an electromagnetic induction experimental apparatus.

Background

Electromagnetic induction is a basic knowledge of high school physics, at the in-process of studying electromagnetic induction, in order audio-visual impression electromagnetic induction principle, generally need the student to carry out the electromagnetic induction experiment, current electromagnetic induction device all is that simple handheld coil removes from horseshoe magnet, thereby observe the pointer swing of sensitive galvanometer, this kind of experimental apparatus can only follow the audio-visual impression electromagnetic induction principle on the surface, nevertheless can't be through the accurate influence of understanding electromagnetic induction in-process various factors to the electromagnetic induction result of this experimental apparatus, for example, the coil turn, the magnetic flux, the area that the coil removed is to the influence of the electromotive force that electromagnetic induction produced. In view of this, we propose an electromagnetic induction experimental apparatus.

SUMMERY OF THE UTILITY MODEL

In order to make up for above deficiency, the utility model provides an electromagnetic induction experimental apparatus.

The technical scheme of the utility model is that:

the utility model provides an electromagnetic induction experimental apparatus, includes the test bench, be fixed with hoof magnet on the test bench, hoof magnet top is equipped with the coil, the coil passes from hoof magnet, coil actuating mechanism is installed to one side of hoof magnet, movable mounting has the coil fixed establishment of two mutual symmetries on the coil actuating mechanism, the coil is fixed in between two coil fixed establishment, still be equipped with sensitive galvanometer and switch on the test bench, the negative terminal connection on wire and the sensitive galvanometer is passed through to the one end of coil, and the other end of coil passes through the wire and connects on one of them conducting strip of switch, and another conducting strip of switch passes through the positive terminal connection on wire and the sensitive galvanometer.

According to a preferable technical scheme, the coil driving mechanism comprises a supporting plate fixed on the test bed, two first screw rods which are symmetrical to each other are rotatably arranged on the supporting plate, a rocking handle is fixedly arranged at one tail end of one of the first screw rods, a first limiting disc is fixed at the other tail end of each of the two first screw rods, and a moving plate is movably arranged on the two first screw rods.

As a preferable technical scheme, the first screw rod is connected with the supporting plate through a bearing, the first screw rod penetrates through an inner ring of the bearing, the first screw rod is fixed with the inner ring of the bearing, an outer ring of the bearing is fixed with the supporting plate, and the two first screw rods are in synchronous transmission connection through a conveying belt.

According to the preferable technical scheme, the first screw rod is in threaded connection with the moving plate, the pointer is fixedly installed on the moving plate, the graduated scale is fixedly installed on the supporting plate, and the graduated scale and the pointer are located on the same vertical plane.

As preferred technical scheme, coil fixed establishment is including the activity curb plate, activity curb plate and movable plate activity hinge joint, fixed mounting has the bearing fixed block on the activity curb plate, the front end fixed mounting of bearing fixed block has the bearing, wear to be equipped with the second screw rod in the bearing, the outer lane and the bearing fixed block of bearing are fixed, and the inner circle and the second screw rod of bearing are fixed, wherein one end of second screw rod is fixed with the spacing dish of second, and the other one end of second screw rod is fixed with the swing handle, is located the second screw rod on the activity curb plate and is equipped with the guide bar parallel with it under, the guide bar is fixed on the activity curb plate through the guide bar fixed block of fixing at its both ends.

As a preferable technical solution, the coil fixing mechanism further includes two clamping blocks disposed on one side of the movable side plate but not in contact with the movable side plate, the coil is clamped between the two clamping blocks, and the second screw and the guide rod simultaneously pass through the two clamping blocks.

As a preferable technical scheme, the second screw is equally divided into two sections by taking the bearing as the center, the surrounding directions of the threads on the two sections of surfaces are opposite, the two sections are in threaded connection with the clamping block, and the clamping block can freely move along the guide rod.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model can realize the horizontal movement of the driving coil to cut the magnetic induction lines through the arrangement of the coil driving mechanism, and can realize the accurate and visual measurement of the moving distance of the coil through the design of the graduated scale on the coil driving mechanism, thereby accurately knowing the moving area of the coil and further knowing the influence of the moving area of the coil on the electromotive force generated by the electromagnetic induction;

2. the utility model discloses a coil of different turns can be freely changed in coil fixed establishment's setting to can understand the influence of the coil turn to the electromotive force that electromagnetic induction produced.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention (in the state of the mounted coil);

fig. 2 is a second overall structure diagram (a state without a coil mounted) of the present invention;

fig. 3 is a schematic structural diagram of a coil driving mechanism according to the present invention;

fig. 4 is a schematic structural diagram of the middle coil fixing mechanism of the present invention.

In the figure:

a test stand 1;

a horseshoe magnet 2;

the coil driving mechanism 3, a supporting plate 30, a first screw 31, a rocking handle 32, a first limiting disc 33, a moving plate 34, a pointer 35 and a graduated scale 36;

the coil fixing mechanism 4, the movable side plate 40, the bearing fixing block 41, the bearing 42, the second screw 43, the second limiting disc 44, the rotating handle 45, the guide rod fixing block 46, the guide rod 47 and the clamping block 48;

and a coil 5.

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.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Referring to fig. 1-4, the present invention provides a technical solution:

an electromagnetic induction experimental device comprises a test bed 1, wherein a horseshoe-shaped magnet 2 is fixed on the test bed 1, a coil 5 is arranged above the horseshoe-shaped magnet 2, the coil 5 passes through the horseshoe-shaped magnet 2, a coil driving mechanism 3 is arranged on one side of the horseshoe-shaped magnet 2, two mutually symmetrical coil fixing mechanisms 4 are movably arranged on the coil driving mechanism 3, the coil 5 is fixed between the two coil fixing mechanisms 4, a sensitive ammeter and a switch are further arranged on the test bed 1, one end of the coil 5 is connected with a negative terminal on the sensitive ammeter through a lead, the other end of the coil 5 is connected with one conducting strip of the switch through a lead, the other conducting strip of the switch is connected with a positive terminal on the sensitive ammeter through a lead, and the sensitive ammeter, the switch and the lead are all necessary experimental instruments for conventional experimental processes and are not drawn in the attached drawings of the utility model, but does not affect the knowledge of those skilled in the art of such instruments.

Preferably, the coil driving mechanism 3 includes a supporting plate 30 fixed on the test bed 1, two first screws 31 symmetrical to each other are rotatably mounted on the supporting plate 30, one end of one of the first screws 31 is fixedly mounted with a rocking handle 32, the other ends of the two first screws 31 are both fixed with a first limiting disc 33, and a moving plate 34 is movably disposed on the two first screws 31.

Preferably, in the present embodiment, the first screw 31 is connected to the support plate 30 through a bearing (not shown in the figure on the back of the support plate 30), the first screw 31 passes through an inner ring of the bearing, the first screw 31 is fixed to the inner ring of the bearing, an outer ring of the bearing is fixed to the support plate 30, the two first screws 31 are synchronously and drivingly connected through a conveyor belt (not shown in the figure on the back of the support plate 30), and the bearing is arranged to enable the first screw 31 to freely rotate and also enable the first screw 31 to be supported and mounted on the support plate 30.

Preferably, the first screw 31 is in threaded connection with the moving plate 34, the pointer 35 is fixedly mounted on the moving plate 34, the scale 36 is fixedly mounted on the supporting plate 30, the scale 36 and the pointer 35 are located on the same vertical plane, and the distance moved by the moving plate 34 can be accurately seen through the arrangement of the scale 36 and the pointer 35.

It should be added that the moving plate 34 and the coil 5 are located on the same plane, so the moving distance of the moving plate 34, that is, the moving distance of the coil 5, and the moving distance of the coil 5 can be visually seen, the width multiplied by the horseshoe-shaped magnet is the moving area of the coil 5, and the magnetic induction intensity multiplied by the horseshoe-shaped magnet is the magnetic flux.

Preferably, the coil fixing mechanism 4 includes a movable side plate 40, the movable side plate 40 is movably hinged to the movable plate 34, a bearing fixing block 41 is fixedly mounted on the movable side plate 40, a bearing 42 is fixedly mounted at a front end of the bearing fixing block 41, a second screw 43 penetrates through the bearing 42, an outer ring of the bearing 42 is fixed to the bearing fixing block 41, an inner ring of the bearing 42 is fixed to the second screw 43, a second limiting disc 44 is fixed to one end of the second screw 43, a rotating handle 45 is fixed to the other end of the second screw 43, a guide rod 47 parallel to the second screw 43 is arranged right below the second screw 43 on the movable side plate 40, the guide rod 47 is fixed to the movable side plate 40 through guide rod fixing blocks 46 fixed to two ends of the guide rod 47, the bearing 42 is arranged to enable the second screw 43 to freely rotate, and enable the second screw 43 to be supported and mounted on the movable side plate 40.

Preferably, the coil fixing mechanism 4 further includes two holding blocks 48 provided on one side of the movable side plate 40 without contacting the movable side plate 40, the coil 5 is held between the two holding blocks 48, and the second screw 43 and the guide rod 47 are simultaneously passed through the two holding blocks 48.

Preferably, the second screw 43 is equally divided into two sections with the bearing 42 as the center, the thread surrounding directions of the two sections are opposite, and the two sections are both connected with the clamping block 48 in a threaded manner, the clamping block 48 can freely move along the guide rod 47, the two sections of the second screw 43 with opposite threads are arranged, and when the second screw 43 is rotated, the two clamping blocks 48 can be driven to synchronously move in opposite directions, so that the coil 5 can be clamped or loosened.

When the electromagnetic induction experimental device of the utility model is used, the coil 5 is placed between the two movable side plates 40, so that the two pairs of clamping blocks 48 on the two movable side plates 40 clamp the coil 5, then the two second screw rods 43 are rotated to drive the two clamping blocks 48 to be close to each other and clamp the coil 5 tightly, thereby fixing the coil 5 and loosening the coil 5 in the same way can be realized, thereby the coils 5 with different turns can be freely replaced according to the experimental needs, after the coil 5 is fixed, the rocking handle 32 is rotated to drive the first screw rods 31 to rotate, because the two first screw rods 31 are connected by the synchronous transmission of the conveyor belt, the two first screw rods 31 can be driven to synchronously rotate in the same direction, further, the movable plate 34 can be driven to move, the movable side plates 40 and the coil 5 between the movable plates are driven to move by the movement of the movable plate 34, and the scale 36 can visually display the moving distance in the moving process, therefore, the moving distance of the coil 5 can be intuitively known, the moving distance of the coil 5 is multiplied by the width of the horseshoe-shaped magnet to be the moving area of the coil 5, the multiplied magnetic induction intensity of the horseshoe-shaped magnet is the magnetic flux, the number of turns and the magnetic flux of the coil 5 can be freely changed as required by the mode, and therefore the influence of the number of turns and the magnetic flux of the coil on the electromotive force generated by electromagnetic induction can be intuitively observed.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an electromagnetic induction experimental apparatus, includes test bench (1), be fixed with hoof magnet (2) on test bench (1), hoof magnet (2) top is equipped with coil (5), coil (5) pass in hoof magnet (2), its characterized in that: coil actuating mechanism (3) are installed to one side of hoof shape magnet (2), movable mounting has coil fixed establishment (4) of two mutual symmetries on coil actuating mechanism (3), coil (5) are fixed in between two coil fixed establishment (4), still be equipped with sensitive galvanometer and switch on test bench (1), the negative terminal connection on wire and the sensitive galvanometer is passed through to the one end of coil (5), and the other end of coil (5) passes through the wire and connects on one of them conducting strip of switch, and another conducting strip of switch passes through the positive terminal connection on wire and the sensitive galvanometer.

2. The electromagnetic induction experimental apparatus of claim 1, characterized in that: coil actuating mechanism (3) are including fixing backup pad (30) on test bench (1), rotatable installation has two first screw rods (31) of mutual symmetry on backup pad (30), one of them terminal fixed mounting of first screw rod (31) has rocking handle (32), two the other end of first screw rod (31) all is fixed with first spacing dish (33), and mobilizable movable plate (34) that is equipped with on two first screw rods (31).

3. The electromagnetic induction experimental apparatus of claim 2, characterized in that: the first screw rods (31) are connected with the supporting plate (30) through bearings, the first screw rods (31) penetrate through the inner rings of the bearings, the first screw rods (31) are fixed with the inner rings of the bearings, the outer rings of the bearings are fixed with the supporting plate (30), and the two first screw rods (31) are in synchronous transmission connection through a conveyor belt.

4. The electromagnetic induction experimental apparatus of claim 2, characterized in that: threaded connection between first screw rod (31) and movable plate (34), fixed mounting has pointer (35) on movable plate (34), fixed mounting has scale (36) on backup pad (30), scale (36) and pointer (35) are located same vertical plane.

5. The electromagnetic induction experimental apparatus of claim 1, characterized in that: the coil fixing mechanism (4) comprises a movable side plate (40), the movable side plate (40) is movably hinged with the movable plate (34), a bearing fixing block (41) is fixedly arranged on the movable side plate (40), a bearing (42) is fixedly arranged at the front end of the bearing fixing block (41), a second screw rod (43) penetrates through the bearing (42), the outer ring of the bearing (42) is fixed with the bearing fixing block (41), the inner ring of the bearing (42) is fixed with the second screw rod (43), a second limiting disc (44) is fixed at one end of the second screw rod (43), a rotating handle (45) is fixed at the other end of the second screw rod (43), a guide rod (47) parallel to the second screw rod (43) is arranged under the second screw rod (43) on the movable side plate (40), the guide rods (47) are fixed on the movable side plates (40) through guide rod fixing blocks (46) fixed at the two ends of the guide rods.

6. The electromagnetic induction experimental apparatus of claim 5, characterized in that: the coil fixing mechanism (4) further comprises two clamping blocks (48) which are arranged on one side of the movable side plate (40) and are not in contact with the movable side plate (40), the coil (5) is clamped between the two clamping blocks (48), and the second screw rod (43) and the guide rod (47) penetrate through the two clamping blocks (48) simultaneously.

7. The electromagnetic induction experimental apparatus of claim 6, characterized in that: the second screw rod (43) is equally divided into two sections by taking the bearing (42) as a center, the surrounding directions of the threads on the surfaces of the two sections are opposite, the two sections are in threaded connection with the clamping block (48), and the clamping block (48) can freely move along the guide rod (47).