CN110556043A - Dual-purpose generator rotor and experimental device thereof - Google Patents

Abstract

the invention discloses a dual-purpose generator rotor and an experimental device thereof, and relates to the field of structural design of generator rotors and teaching of motor experimental principles.

Description

Dual-purpose generator rotor and experimental device thereof

Technical Field

The invention relates to the field of structural design of a generator rotor and teaching of motor experiment principles, in particular to a dual-purpose generator rotor and an experimental device thereof.

Background

As is well known, the motors on the market are various, the device structure is relatively complex, and the generator is also the same. And because the motor is mostly applied to industrial production, the motor is an integrated finished product researched and developed by manufacturers. In the motor principle teaching experiment of school, traditional experimental apparatus is mostly finished product motor or finished product motor disassembly piece, has brought a great deal of inconvenience to the teaching of motor inner structure and principle. Because various devices (including a rotor, a stator, an iron core, a carbon brush and the like) of the integrated motor are all packaged in a motor shell, a beginner is difficult to understand the winding mode inside the integrated motor and the connection mode among the devices, and therefore the beginner is not deep enough to understand the principle of the motor. It is difficult to really master the knowledge of the motor principle.

at present, most of patents related to generator experimental principle teaching are relatively complex in design, and the display of the principle of alternating current and direct current power generation is not clear enough, for example, the invention patent with the publication number of CN 106205312A: a multifunctional hand-operated AC/DC generator can generate AC and DC power supplies. However, the wiring of the wiring terminals in this patent is performed, and a transparent cover is installed above the base of the experimental device for packaging, which may lead to the ambiguity of the principle of how the patent generates the ac/dc power supply for the user. Also as disclosed in patent publication No. CN 106023769A: a motor and generator two-in-one teaching demonstration model can also realize the generation of an alternating current and direct current power supply, but the designed structure is complex.

Disclosure of Invention

The invention aims to solve the technical problem that in order to solve the defects in the prior art, the invention provides a dual-purpose generator rotor experimental device design, and the main design idea is to improve the traditional generator rotor, so that the rotor designed by the invention can extract both single-phase alternating voltage and direct voltage after cutting magnetic induction lines in a magnetic field.

The invention adopts the following technical scheme for solving the technical problems:

A dual-purpose generator rotor comprises an iron core, an iron core bracket, an annular belt groove, a copper wire, two semicircular copper rings and two full-circular copper rings;

wherein, two full-circle copper rings are fixed on the iron core bracket in parallel;

the two semicircular copper rings form a circular copper ring, are fixed on the iron core bracket at intervals and have gaps, and are used for performing the phase change function;

the copper wire is wound on the rotor iron core, and two ends of the wound copper wire are respectively connected to a semicircular copper ring and a full-circle copper ring, so that direct-current voltage is led out from the two semicircular copper rings, and alternating-current voltage is led out from the two full-circle copper rings;

the annular belt groove is fixed on the iron core support and used for driving the rotor to rotate to cut the magnetic induction line to generate induced electromotive force.

As a further preferable aspect of the dual-purpose generator rotor of the present invention, the core support is provided with a through hole.

A dual-purpose generator rotor experimental device comprises a dual-purpose generator rotor, an opposite-polarity permanent magnet, a carbon brush bracket, a carbon brush, a belt, a handle, a bulb, a fixing nut, a rotor shaft and a handle shaft;

the dual-purpose generator rotor is arranged on the rotor shaft sleeve, and the handle is arranged on the handle shaft and used for driving the dual-purpose generator rotor to rotate;

The permanent magnets with different polarities are respectively arranged right above and right below the rotor shaft and used for generating fixed magnetic fields;

the carbon brush bracket is arranged outside the rotor shaft, is used for placing a carbon brush and is used for leading voltage to the bulb through the carbon brush;

A fixing nut, a belt groove and a handle are arranged outside the carbon brush support and used for shaking the disc by hand to drive the generator rotor to rotate and cut the magnetic induction line to generate electromotive force;

When the carbon brushes are fixedly placed in the first carbon brush hole and the second carbon brush hole, the direct current voltage is output, and when the carbon brushes are fixedly placed in the third carbon brush hole and the fourth carbon brush hole, the alternating current voltage is output.

Compared with the prior art, the invention adopting the technical scheme has the following technical effects:

1. The invention realizes the dual purposes of the generator rotor experimental device, and can generate alternating current voltage and direct current voltage in the scenes of the embodiment or more corresponding implementation scenes. The structure design is simple, the principle is clear, and beginners can easily understand the principle and the difference of generating alternating current and direct current; the method can bring convenience to experimental teaching of the motor principle;

2. The invention can enable a user to intuitively know the winding mode of the rotor coil and the structure of the generator rotor, and easily master the principle of the alternating current-direct current generator and the rule of changing the current direction, thereby meeting the teaching requirement of a motor experiment.

Drawings

FIG. 1 is a schematic structural view of a dual-purpose generator rotor according to the present invention;

FIG. 2 is a base of a generator according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of an experimental setup according to an embodiment of the present invention.

Detailed Description

The technical scheme of the invention is further explained in detail by combining the attached drawings:

In order to thoroughly understand the design of the present invention, detailed steps and detailed structures will be set forth in the following description in order to explain the technical solution of the present invention. The following detailed description of the preferred embodiments of the invention, however, the invention is capable of other embodiments in addition to those detailed.

a dual-purpose generator rotor is shown in figure 1 and comprises an iron core 6, an iron core bracket 5, an annular belt groove 1, copper wires, two semicircular copper rings 2, two full-circular copper rings 4, through holes 3 and the like.

where all copper rings need to be fixed to the core support and the rings are fixed in the 2, 4 positions as shown in figure 1. It should be noted that the two semicircular copper rings are formed into a circular copper ring, but the two semicircular copper rings are separated from each other on the iron core bracket and have a gap (which plays a role in phase commutation). The two full-circle copper rings are fixed on the iron core bracket in parallel.

copper wires need to be wound on the rotor core, and two ends of the wound copper wires are connected to a semicircular copper ring and a full-circle copper ring respectively. At the moment, if the rotor is in a magnetic field, the rotor is driven to rotate in the magnetic field by the belt, and the magnetic induction lines are cut. As long as the carbon brush is connected with the copper rings in a sliding manner, direct current voltage can be led out from the two semicircular copper rings, and alternating current voltage can be led out from the two full-circular copper rings.

The annular belt groove also needs to be fixed on the rotor and used for driving the rotor to rotate to cut the magnetic induction line to generate induced electromotive force.

the design of the connecting line of the copper ring and the winding end on the rotor, the shape of the copper ring and the fixed position ensures that the rotor of the experimental device can generate direct current through phase change of the two semicircular copper rings and generate alternating current through the two full-circular copper rings. And the design structure is simple, the principle is clear, and beginners can easily understand the principle and the difference of generating alternating current and direct current.

The invention provides a design of a dual-purpose generator rotor experimental device, and a specific embodiment of the design is shown in figure 3, and the design comprises the following components: the device comprises a pair of opposite permanent magnets, a carbon brush support, a carbon brush, a belt, a handle, a bulb, a fixing nut, an iron core support, an annular belt groove, copper wires, copper rings (two semicircular copper rings and two full-circular copper rings), a base and the like.

the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Fig. 2 shows a base of a generator according to an embodiment of the present invention. The dual-purpose generator rotor designed by the invention is sleeved on the position of the rotor shaft A in the figure 2, and the hand crank is arranged on the position of the hand crank shaft B to drive the rotor to rotate.

further, the embodiment of the present invention needs to be assembled, the specific schematic diagram is shown as reference in fig. 3, two opposite permanent magnets are installed right above and right below the rotor shaft 1 of fig. 2 to generate a fixed magnetic field, and the positions of the installed permanent magnets are shown in fig. 3. It should be noted that the permanent magnets are mounted so that the rotor of the present invention is free to rotate on the shaft.

Further, in order to lead out the dc and ac power generated on the rotor of the dual-purpose generator, the embodiment uses the bracket with number 15 carbon brushes as shown in fig. 3, and the bracket needs to be installed outside the rotor shaft shown in fig. 2 for placing the number 14 carbon brushes as shown in fig. 3. Thereby drawing voltage through the carbon brush to the bulb.

In order to fix the carbon brush holder, a fixing nut needs to be installed outside the carbon brush holder, as shown in position 11 in fig. 3. At this time, a belt is also needed to be installed to connect the No. 1 belt groove shown in FIG. 3 and the No. 13 crank, so that the disc is rocked by hands to drive the generator rotor to rotate and cut the magnetic induction lines, and electromotive force is generated.

further, when the two carbon brushes are fixedly placed in the carbon brush holes No. 8 and No. 9 in fig. 3, a direct current voltage can be output, and when the two carbon brushes are fixedly placed in the carbon brush holes No. 7 and No. 10 in fig. 3, an alternating current voltage can be output.

The carbon brush and the bulb are connected through a wire. A complete circuit is formed. This is seen by shaking the handle, the rotor of the generator rotating in the magnetic field, and when the rotation reaches a certain speed, it can be seen that the bulb starts to emit light.

In order to further observe that the generated alternating voltage waveform is generated, a digital oscilloscope can be used for measurement, the carbon brushes of the No. 7 carbon brush holes and the No. 10 carbon brush holes in the graph 3 are connected to two ends of the oscilloscope, and the alternating current with the size and the direction changing can be found on a display screen of the oscilloscope by rotating the handle to a certain rotating speed.

in summary, the invention adopts the above technical solution, so that the two purposes of the generator rotor experimental device are realized, and the ac voltage and the dc voltage can be generated in the scenes of the embodiments or in more corresponding implementation scenes. The device has simple structural design and clear principle, and enables beginners to easily understand the principle and the difference of alternating current and direct current. Can bring convenience for the experimental teaching of the motor principle.

The above description is of the preferred embodiment of the invention. It is to be understood that the invention is not limited to the particular embodiments described above, in that devices and structures not described in detail are understood to be implemented in a manner common in the art; those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or modify equivalent embodiments to equivalent variations, without departing from the spirit of the invention, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.

Claims (3)

1. a dual-purpose generator rotor, characterized by: the copper wire winding device comprises an iron core, an iron core bracket, an annular belt groove, a copper wire, two semicircular copper rings and two full-circular copper rings;

Wherein, two full-circle copper rings are fixed on the iron core bracket in parallel;

the two semicircular copper rings form a circular copper ring, are fixed on the iron core bracket at intervals and have gaps, and are used for performing the phase change function;

the copper wire is wound on the rotor iron core, and two ends of the wound copper wire are respectively connected to a semicircular copper ring and a full-circle copper ring, so that direct-current voltage is led out from the two semicircular copper rings, and alternating-current voltage is led out from the two full-circle copper rings;

The annular belt groove is fixed on the iron core support and used for driving the rotor to rotate to cut the magnetic induction line to generate induced electromotive force.

2. A dual-purpose generator rotor as set forth in claim 1, wherein: the iron core support is provided with a through hole.

3. The utility model provides a dual-purpose generator rotor experimental apparatus which characterized in that: the dual-purpose generator rotor comprises a dual-purpose generator rotor, an opposite-polarity permanent magnet, a carbon brush bracket, a carbon brush, a belt, a handle, a bulb, a fixing nut, a rotor shaft and a handle shaft;

the dual-purpose generator rotor is arranged on the rotor shaft sleeve, and the handle is arranged on the handle shaft and used for driving the dual-purpose generator rotor to rotate;

the permanent magnets with different polarities are respectively arranged right above and right below the rotor shaft and used for generating fixed magnetic fields;

the carbon brush bracket is arranged outside the rotor shaft, is used for placing a carbon brush and is used for leading voltage to the bulb through the carbon brush;

A fixing nut, a belt groove and a handle are arranged outside the carbon brush support and used for shaking the disc by hand to drive the generator rotor to rotate and cut the magnetic induction line to generate electromotive force;

When the carbon brushes are fixedly placed in the first carbon brush hole and the second carbon brush hole, the direct current voltage is output, and when the carbon brushes are fixedly placed in the third carbon brush hole and the fourth carbon brush hole, the alternating current voltage is output.