Annular DC motor
Technical Field
The invention relates to an annular direct current motor, in particular to an external-release annular direct current motor with a compact structure.
Background
A Motor (Motor) is a device that converts electrical energy into mechanical energy, and generates a rotating magnetic field by using an electrified coil (i.e., a stator winding) and acts on a magnetic rotor to form a three-phase rotating magnetic field. The motor mainly comprises a stator and a rotor, and the direction of the forced movement of the electrified conducting wire in a magnetic field is related to the current direction and the direction of a magnetic induction line (magnetic field direction). The working principle of the motor is that the magnetic field exerts force on current to rotate the motor. At present, the traditional motor for teaching is relatively complex in structure and mostly has an internal structure, and how to overcome the existing problems is the problem to be solved by the invention.
Disclosure of Invention
The invention aims to solve the technical problem of providing an annular direct current motor which has the characteristics of compact structure and external placement.
In order to solve the technical problems, the technical scheme of the invention is as follows: the annular direct current motor has the innovation points that: the annular direct current motor comprises a bearing frame, an upper baffle plate, a lower baffle plate and a rotatable plate, wherein the bearing frame is vertically arranged on a central axis, the upper baffle plate and the lower baffle plate are used for the bearing frame to penetrate through, an annular coil is arranged between the upper baffle plate and the lower baffle plate and outside the bearing frame, the rotatable plate is arranged on the bearing frame and above the upper baffle plate, magnetic assemblies are arranged at two end parts of the rotatable plate on the rotatable plate, and a fastening structure for connecting the upper baffle plate and the lower baffle plate is arranged between the upper baffle plate and the lower baffle plate; the annular coil is of a hollow structure, and a plurality of magnetic beads capable of moving along the circumferential direction of the annular coil core are arranged on the annular coil core.
Preferably, the magnetic component is located right above the annular coil, and the magnetic component is a permanent magnet.
Preferably, the magnetic assembly includes a base plate fixed on the rotatable plate, and a magnetic body mounted on the base plate.
Preferably, the rotatable plate is of a strip-shaped structure, and the bearing frame is provided with a plurality of rotatable plates.
Preferably, the bearing frame is provided with a plurality of rotatable plates positioned below the lower baffle plate.
Preferably, the fastening structure between the upper baffle plate and the lower baffle plate is a bolt connection.
Preferably, a plurality of supporting structures for supporting the annular coil are arranged on the lower baffle plate, each supporting structure comprises a supporting column arranged on the lower baffle plate and a supporting part positioned at the top of the supporting column, each supporting part is of a semicircular structure, and the lower part of the annular coil is positioned in the supporting part.
Preferably, the bearing frame is provided with a butting nut which butts against the top surface of the rotatable plate and the bottom surface of the rotatable plate, and a gap is reserved between the magnetic assembly and the upper baffle plate after the rotatable plate is installed.
Preferably, the preset range of the gap is controlled to be 0.5-1.5 cm.
Preferably, the annular coil is wound with a single full coil or with equally divided three-segment coils.
The invention has the advantages that: through adopting above-mentioned structure, utilize the annular coil circular telegram back that is located between overhead gage and the lower baffle to produce magnetic field, thereby realize being located the magnetic component on the outside rotatable board and move along with, finally realize rotatable board and revolve round the bearing bracket.
A single whole-circle coil is wound on the annular coil or an equally divided three-section coil is wound on the annular coil, and when the single whole-circle coil is wound on the annular coil, direct current is conducted on the annular coil to generate a rotating magnetic field; when the annular coil is wound with the three-section coil, three-phase alternating current is introduced to generate a three-phase rotating magnetic field to push a plurality of magnetic beads at the core part of the annular coil to move circumferentially, so that the magnetic beads are utilized to further influence the movement of an external rotatable plate.
Drawings
The invention is described in further detail below with reference to the figures and the detailed description.
Fig. 1 is a perspective view of a toroidal dc motor according to the present invention.
Fig. 2 is an exploded view of a toroidal dc motor of the present invention.
Fig. 3 is a schematic structural diagram of a toroidal dc motor according to the present invention.
In the figure: 1-bearing frame, 2-upper baffle, 3-lower baffle, 4-annular coil, 5-rotatable plate, 6-magnetic component, 61-base plate, 62-magnetic body, 7-fastening structure, 81-support column, 82-support part and 9-opposite-top nut.
Detailed Description
The annular direct current motor comprises a bearing frame 1, an upper baffle 2, a lower baffle 3, an annular coil 4 and a rotatable plate 5, wherein the bearing frame is vertically arranged on a central axis, the upper baffle 2 and the lower baffle 3 are used for the bearing frame to pass through, the annular coil 4 is positioned between the upper baffle and the lower baffle and positioned outside the bearing frame, the rotatable plate 5 is arranged on the bearing frame and positioned above the upper baffle, magnetic assemblies 6 are arranged at two end parts of the rotatable plate on the rotatable plate, and a fastening structure 7 for connecting the upper baffle and the lower baffle is arranged between the upper baffle and the lower baffle; the annular coil is of a hollow structure, and the annular coil core is provided with a plurality of magnetic beads which can move along the circumferential direction of the annular coil core and are not shown in the figure. Through adopting above-mentioned structure, utilize the annular coil circular telegram back that is located between overhead gage and the lower baffle to produce magnetic field, thereby realize being located the magnetic component on the outside rotatable board and move along with, finally realize rotatable board and revolve round the bearing bracket.
The magnetic assembly is located right above the annular coil and is a permanent magnet, and the magnetic assembly comprises a substrate 61 fixed on the rotatable plate and a magnetic body 62 mounted on the substrate. In order to realize high-power use occasions, the rotatable plates are of strip-shaped structures, and the bearing frame is provided with a plurality of rotatable plates. For reasonable layout, a plurality of rotatable plates positioned below the lower baffle plate are arranged on the bearing frame. The fastening structure between the upper baffle and the lower baffle is in bolt connection.
In order to support and fix the annular coil, a supporting structure for supporting the annular coil is arranged on the lower baffle plate, the supporting structure comprises a supporting column 81 arranged on the lower baffle plate and a supporting part 82 positioned at the top of the supporting column, the supporting part is of a semicircular structure, and the lower part of the annular coil is positioned in the supporting part. The bearing frame is provided with an opposite-top nut 9 which is propped against the top surface of the rotatable plate and the bottom surface of the rotatable plate, a gap is formed between the magnetic assembly and the upper baffle plate after the rotatable plate is installed, and the preset range of the gap is controlled to be 0.5-1.5 cm.
A single whole-circle coil is wound on the annular coil or an equally divided three-section coil is wound on the annular coil, and when the single whole-circle coil is wound on the annular coil, direct current is conducted on the annular coil to generate a rotating magnetic field; when the annular coil is wound with the three-section coil, three-phase alternating current is introduced to generate a three-phase rotating magnetic field to push a plurality of magnetic beads at the core part of the annular coil to move circumferentially, so that the magnetic beads are utilized to further influence the movement of an external rotatable plate.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and those skilled in the art should understand that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all the modifications and equivalent substitutions should be covered by the claims of the present invention.