CN103927916A

CN103927916A - Motor demonstration model

Info

Publication number: CN103927916A
Application number: CN201410173730.1A
Authority: CN
Inventors: 井大喜; 李仁为; 翁成美; 宋伟强
Original assignee: Bengbu Changxin Kepu Product Engineering Research Center Co Ltd
Current assignee: Bengbu Changxin Kepu Product Engineering Research Center Co Ltd
Priority date: 2014-04-28
Filing date: 2014-04-28
Publication date: 2014-07-16
Anticipated expiration: 2034-04-28
Also published as: CN103927916B

Abstract

The invention relates to a motor demonstration model comprising a base, a rotor, a rotor support, magnets and magnet supports. Four guide rod supports and two handle bases are fixed to the base, wherein the four guide rod supports form a quadrangle, and the two handle bases are symmetrically arranged. Two parallel guide rods are fixed to the guide rod supports, wherein the two guide rods support two magnet bases jointly. The two magnet bases are symmetrically arranged. The two magnet bases can slide along the guide rods. Each magnet is fixed to the corresponding magnet support. The magnetic poles of the two magnets are opposite. Two rigid connecting rods are hinged to the faces, with the backs towards each other, of the two magnets. Each rigid connecting rod is hinged to a handle. Each handle is hinged to the corresponding handle base. The rotor is located between the two magnets. A shaft is fixed into the rotor. The shaft is hinged to the rotor support. The rotor support is fixed to the base. According to the motor demonstration model, the structure is simple, the influence of current on stress of a powered-on conductor can be demonstrated, the influence of magnetic field intensity on stress of the powered-on conductor can also be demonstrated, and visuality and operability are better.

Description

Motor demonstrating model

Technical field

The present invention relates to a kind of teaching mode, specifically a kind of motor demonstrating model that is used for demonstrating motor principle.

Technical background

Motor is the equipment of mechanical energy that electric energy is converted to, and is to utilize electrical conductor stressed action principle in magnetic field, and two end lines of hot-wire coil have rightabout electric current simultaneously, makes whole coil produce the torsion around axle, and coil is rotated.

Direct current motor, due to the ubiquity of its usable range, also becomes physics teaching in secondary school aspect key content.But the current demonstrating model of motor on the market, magnetic direction and intensity are all fixed, and the electronic situation that can only be used in the fixing situation of magnetic field demonstration intensity can not be used for the impact of magnetic field demonstration Strength Changes on the suffered Ampère force of electrical conductor.

Summary of the invention

The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, and a kind of motor demonstrating model is provided, this model not only can demonstrating current on the stressed impact of electrical conductor, can also magnetic field demonstration intensity on the stressed impact of electrical conductor.

For solving the problems of the technologies described above, the invention provides a kind of motor demonstrating model, comprise base, rotor, rotor field spider, magnet and magnet support, on described base, be fixed with four guide bar receivers and two handle sets, four guide bar receivers are quadrilateral and arrange, two handle sets are arranged symmetrically with, on guide bar receiver, be fixed with two guide rods, two guide rods are parallel to each other, two two of guide rod shareds magnet bases, two magnet bases are arranged symmetrically with, two magnet bases can slide along guide rod, on two magnet supports, each fixes a magnet, two magnet magnetic poles are relative, each hinged rigidity connecting rod on the phase back side of two magnet, rigidity connecting rod and handle are hinged, handle is hinged on handle set,

Rotor, between two magnet, is fixed with axle in rotor, axle is hinged on rotor field spider, is also fixed with flabellum on axle, and flabellum is positioned at rotor field spider outside, and rotor field spider is fixed on base.

Described rotor is commercially available prod, and rotor includes hot-wire coil, and hot-wire coil two ends connect two brushes, and brush connects external power.

Principle of work of the present invention is: by upwards lifting handle, handle promotes two magnet along guide rod slide in opposition, two magnet spacings are dwindled, produce the magnetic field of some strength, energising in rotor (hot-wire coil), according to Ampere theorem, hot-wire coil produces Ampère force in magnetic field, band moving axis rotates together, by the rotation of flabellum, can observe this phenomenon.

Moving magnet is to another distance, in coil, pass into same current, observe the variation of the rotational speed generation of flabellum, according to formula F=BILsin θ, (wherein F is Ampère force, B is that magnetic field intensity, I are that size of current, L are that loop length, θ are the angle of magnetic field and coil), checking Ampère force size is proportional with magnetic field intensity.

Motor demonstrating model of the present invention is simple in structure, not only can demonstrating current on the stressed impact of electrical conductor, can also the impact of magnetic field demonstration intensity on the stressed size of electrical conductor, have more intuitive and operability.

Accompanying drawing explanation

Fig. 1 is the structural representation of the magnet of motor demonstrating model of the present invention while separating.

Fig. 2 is the vertical view of Fig. 1.

Fig. 3 is the structural representation of the magnet of motor demonstrating model of the present invention while merging.

Embodiment

Below in conjunction with the drawings and specific embodiments, the invention will be further described.

Motor demonstrating model, comprise base 9, rotor 2, rotor field spider 3, the first magnet 1a, the second magnet 1b and the first magnet support 11a and the second magnet support 11b, on described base 9, be fixed with the first guide bar receiver 8a of inverted T-shaped, the second guide bar receiver 8b, the 3rd guide bar receiver 8c, the 4th guide bar receiver 8d, first handle seat 12a and second handle seat 12b, the first guide bar receiver 8a, the second guide bar receiver 8b, the 3rd guide bar receiver 8c and the 4th guide bar receiver 8d are quadrilateral and arrange, first handle seat 12a is between the first guide bar receiver 8a and the second guide bar receiver 8b, second handle seat 12b is between the 3rd guide bar receiver 8c and the 4th guide bar receiver 8d, between the first guide bar receiver 8a and the 3rd guide bar receiver 8c, be fixed with the first guide rod 10a, between the second guide bar receiver 8b and the 4th guide bar receiver 8d, be fixed with the second guide rod 10b, the first guide rod 10a and the second guide rod 10b are parallel to each other, two of the common carryings of the first guide rod 10a and the second guide rod 10b can be along the magnet support 11a of the first guide rod 10a and the second guide rod 10b slip, 11b, magnet support 11a and magnet support 11b are symmetrical, on magnet support 11a, be fixed with the first magnet 1a, on magnet support 11b, be fixed with the second magnet 1b, the first magnet 1a is relative with the second magnet 1b magnetic pole, the upper hinged first handle 7a of first handle seat 12a, first handle 7a and the first rigidity connecting rod 6a are hinged, and the first rigidity connecting rod 6a and the first magnet 1a are hinged, the upper hinged second handle 7b of second handle seat 12b, second handle 7b and the second rigidity connecting rod 6b are hinged, and the second rigidity connecting rod 6b and the second magnet 1b are hinged, between the first magnet 1a and the second magnet 1b, have rotor 2, rotor 2 is commercially available prod, rotor 2 internal coil, and coil two ends connect two brushes, and brush is connected with external power.In the middle of rotor 2, be fixed with axle 5, axle 5 two ends are hinged on rotor field spider 3, and rotor field spider 3 is fixed on base 9, and axle 5 one end are also fixed with flabellum 4, and flabellum 4 is positioned at rotor field spider 3 outsides.

During demonstration, coil electricity in rotor 2, lift or depress first handle 7a and second handle 7b, first handle 7a and second handle 7b drive the first magnet 1a and the second magnet 1b near or away from, the effect band moving axis 5 that rotor 2 is subject to Ampère force rotates, observe the rotation situation of flabellum 4, thereby find out that flabellum 4 is with the rotational speed of change of magnetic field strength.

The above is only the specific embodiment of the present invention; should be understood that; for the person of ordinary skill of the art; under the premise without departing from the principles of the invention; can also carry out some distortion or be equal to replacement technical scheme of the present invention, these also should be considered as belonging to protection scope of the present invention.

Claims

1. motor demonstrating model, comprise base, rotor, rotor field spider, magnet and magnet support, it is characterized in that: on described base, be fixed with four guide bar receivers and two handle sets, four guide bar receivers are quadrilateral and arrange, two handle sets are arranged symmetrically with, on guide bar receiver, be fixed with two guide rods, two guide rods are parallel to each other, two two of guide rod shareds magnet bases, two magnet bases are arranged symmetrically with, two magnet bases can slide along guide rod, on two magnet supports, each fixes a magnet, two magnet magnetic poles are relative, each hinged rigidity connecting rod on the phase back side of two magnet, rigidity connecting rod and handle are hinged, handle is hinged on handle set, rotor, between two magnet, is fixed with axle in rotor, axle is hinged on rotor field spider, and rotor field spider is fixed on base.

2. motor demonstrating model as claimed in claim 1, is characterized in that: on described axle, be also fixed with flabellum, flabellum is positioned at rotor field spider outside.