CN211296410U

CN211296410U - Rotor assembly of explosion-proof three-phase asynchronous motor

Info

Publication number: CN211296410U
Application number: CN201922388863.1U
Authority: CN
Inventors: 施文超
Original assignee: Suzhou Special Motor Factory Co ltd
Current assignee: Suzhou Special Motor Factory Co ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-08-18
Anticipated expiration: 2029-12-26

Abstract

The utility model relates to the technical field of electric motor, in particular to flame proof type three-phase asynchronous motor's rotor subassembly, the utility model discloses a rotor housing design has flame proof ring and overload cutout to connect can effectually prevent that the rotor subassembly in the motor body from producing the phenomenon of overload separation and splitting to motor body and rotor housing can carry out effectual heat dissipation through the motor fin and the heat dissipation front shroud of design, the utility model discloses except above beneficial effect, strengthening rib and the fastening bolt through the design can effectively improve the utility model discloses a mechanical strength to magnet rotor and permanent magnet and the rotor hollow shaft through the design can effectively reduce the weight of axle and then improve rotation efficiency to the magnet rotor through the design can effectively reduce the mechanical friction that motor body rotated the in-process.

Description

Rotor assembly of explosion-proof three-phase asynchronous motor

Technical Field

The utility model relates to the technical field of motors, in particular to flame-proof type three-phase asynchronous motor's rotor subassembly.

Background

The rotor of the electrical machine is also a rotating part in the electrical machine. The motor consists of a rotor and a stator, and is a conversion device for realizing electric energy and mechanical energy and electric energy. The rotor of the motor is divided into a motor rotor and a generator rotor.

The rotor of the brushless direct current motor is formed by embedding permanent magnets with certain pole pairs on the surface of an iron core or in the iron core. The permanent magnet is mainly made of rare earth permanent magnet materials with high coercive force and high permeability magnetic induction density, such as neodymium iron boron. The action of the permanent magnetic steel of the rotor is similar to that of the permanent magnetic steel used by the brush motor, and an enough magnetic field is established in the air gap of the motor. The rotor structure of the brushless dc motor mostly adopts a surface-bonded magnetic pole, also called a tile-shaped magnetic pole. The surface-pasted magnetic pole is that the tile-shaped rare earth permanent magnet magnetized in the radial direction is pasted on the outer surface of the iron core, and the air gap flux density in the form of square waves can be obtained through reasonable design.

However, the rotor assembly of the existing three-phase asynchronous motor has some disadvantages in the using process, firstly, the rotor assembly of the existing three-phase asynchronous motor can generate larger friction loss in the rotating process, secondly, the rotor assembly of the existing three-phase asynchronous motor can generate overload phenomenon in the rotating process so as to enable the rotor to generate separation, and furthermore, the rotor assembly of the existing three-phase asynchronous motor can generate a large amount of heat in the rotating process so as to influence the internal structure of the motor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a flame-proof type three-phase asynchronous motor's rotor subassembly, rotor subassembly to solve to propose current three-phase asynchronous motor among the above-mentioned background art can produce bigger friction loss at the pivoted in-process, secondly current three-phase asynchronous motor's rotor subassembly can appear overloaded phenomenon and then make the rotor produce and separate the split at the pivoted in-process, moreover, current three-phase asynchronous motor's rotor subassembly can produce a large amount of heats at the pivoted in-process, and then influence the problem of the inside structure of motor.

In order to achieve the above object, the utility model provides a following technical scheme: a rotor assembly of an explosion-proof three-phase asynchronous motor comprises a motor body, wherein a motor mounting bottom plate is fixedly arranged on the lower surface of the motor body, a rotor fixing front cover plate is fixedly arranged on the front surface of the motor body, motor cooling fins are fixedly arranged on the outer surface of the motor body, reinforcing ribs are fixedly arranged on the front surface of the rotor fixing front cover plate, and a rotor shell is rotatably arranged on the inner surface of the motor body;

the utility model discloses a motor, including rotor shell, motor body, motor hollow shaft, rotor shell's internal fixed surface is provided with the stator, the internal surface rotation of stator is provided with the magnet rotor, the surface of magnet rotor is provided with permanent magnet, the internal surface of magnet rotor is provided with the rotor hollow shaft, the front side outer surface rotation of rotor hollow shaft is provided with rolling bearing, the front surface fixed surface of rotor shell is provided with the heat dissipation front shroud, the internal fixed surface of heat dissipation front shroud is provided with the flame proof ring, the external surface electric connection of rotor shell has overload cutout to connect, the external surface electric connection.

Preferably, the motor body is fixedly provided with the motor cooling fins, and the motor cooling fins are arranged on the outer surface of the motor body in an annular array.

Preferably, the front surface of the rotor housing is fixedly provided with the heat dissipation front cover plate, and the heat dissipation front cover plate is provided with heat dissipation holes.

Preferably, the rotor fixing front cover plate is fixedly provided with the reinforcing ribs, and the reinforcing ribs are welded on the front surface of the rotor fixing front cover plate in an annular array.

Preferably, the outer surface of the front side of the rotor hollow shaft is rotatably provided with the rotary bearing, and the rotary bearing is internally provided with a ball.

Preferably, the magnet rotor is provided with the permanent magnets and the permanent magnets are annularly wound around an outer surface of the magnet rotor.

Preferably, the fastening bolt is fixedly arranged on the front surface of the rotor fixing front cover plate.

The utility model discloses a technological effect and advantage:

1. the utility model discloses a rotor subassembly that has the flame proof ring in rotor housing design and transship the cutout and connect can effectually prevent in the motor body produces the phenomenon that transships and separate the fracture to can carry out effectual heat dissipation to motor body and rotor housing through the motor fin and the heat dissipation front shroud of design.

2. The utility model discloses except above beneficial effect, strengthening rib and fastening bolt through the design can effectively improve the utility model discloses a mechanical strength to can effectively reduce the weight of axle and then improve rotation efficiency through the magnet rotor and the permanent magnet of design and rotor hollow shaft, and can effectively reduce the mechanical friction that motor body rotated the in-process through the magnet rotor of design.

Drawings

Fig. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a schematic diagram of the internal structure of the present invention.

Fig. 3 is a front view of the structure of the present invention.

Fig. 4 is a left side view of the structure of the present invention.

Fig. 5 is a front view of the rotor structure of the present invention.

Fig. 6 is a left side view of the rotor structure of the present invention.

In the figure: 1. a motor body; 2. a motor mounting base plate; 3. the rotor fixes the front cover plate; 4. a motor heat sink; 5. reinforcing ribs; 6. a rotor housing; 7. a stator; 8. a magnet rotor; 9. a permanent magnet; 10. a rotor hollow shaft; 11. a rotating bearing; 12. a heat dissipation front cover plate; 13. an explosion-proof ring; 14. an overload cutoff fitting; 15. a motor wire connector; 16. and fastening the bolt.

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.

The utility model provides a as shown in fig. 1-6 a flame-proof type three-phase asynchronous motor's rotor subassembly, as shown in fig. 1, motor body 1's lower fixed surface is provided with motor mounting plate 2, motor body 1's front fixed surface is provided with the fixed front shroud of rotor 3, motor body 1's fixed surface is provided with motor cooling fin 4, the fixed front fixed surface of front shroud 3 of rotor is provided with strengthening rib 5, motor body 1's internal surface rotates and is provided with rotor housing 6.

As shown in fig. 2, a stator 7 is fixedly arranged on the inner surface of a rotor housing 6, a magnet rotor 8 is rotatably arranged on the inner surface of the stator 7, a permanent magnet 9 is arranged on the outer surface of the magnet rotor 8, a rotor hollow shaft 10 is arranged on the inner surface of the magnet rotor 8, a rotating bearing 11 is rotatably arranged on the outer surface of the front side of the rotor hollow shaft 10, a heat-dissipating front cover plate 12 is fixedly arranged on the front surface of the rotor housing 6, an explosion-proof ring 13 is fixedly arranged on the inner surface of the heat-dissipating front cover plate 12, an overload cut-off connector 14 is electrically connected to the outer surface of the rotor housing 6, the phenomenon that a rotor assembly in a motor body 1 is overloaded and separated can be effectively prevented by designing the explosion-proof ring 13 and the overload cut-off.

Referring to fig. 1 and 2, the motor body 1 is fixedly provided with the motor heat sink 4 and the annular array of the motor heat sink 4 is disposed on the outer surface of the motor body 1, the front surface of the rotor housing 6 is fixedly provided with the heat dissipating front cover plate 12 and the heat dissipating front cover plate 12 is provided with heat dissipating holes, the motor body 1 and the rotor housing 6 can be effectively dissipated with the designed motor heat sink 4 and the heat dissipating front cover plate 12, the rotor fixing front cover plate 3 is fixedly provided with the reinforcing ribs 5 and the annular array of the reinforcing ribs 5 is welded on the front surface of the rotor fixing front cover plate 3, the mechanical strength of the present invention can be effectively improved with the designed reinforcing ribs 5 and the fastening bolts 16, referring to fig. 2 and 3, the outer surface of the front side of the rotor hollow shaft 10 is rotatably provided with the rotating bearing 11 and the rolling balls are disposed in the rotating bearing 11, the magnet rotor 8 is provided with the, the weight of the shaft can be effectively reduced through the designed magnet rotor 8, the permanent magnet 9 and the hollow rotor shaft 10, so that the rotating efficiency is improved, the fastening bolt 16 is fixedly arranged on the front surface of the front cover plate 3 for fixing the rotor, and the mechanical friction in the rotating process of the motor body 1 can be effectively reduced through the designed magnet rotor 8.

This practical theory of operation: when the utility model is used, the stator 7 is fixedly arranged on the inner surface of the rotor shell 6, the magnet rotor 8 is rotatably arranged on the inner surface of the stator 7, meanwhile, the permanent magnet 9 is arranged on the outer surface of the magnet rotor 8, the rotor hollow shaft 10 is arranged on the inner surface of the magnet rotor 8, the magnet rotor 8 can effectively reduce the mechanical friction in the rotating process of the motor body 1, a rotary bearing 11 is rotatably provided through the front outer surface of the hollow rotor shaft 10, and a heat-dissipating front cover plate 12 is fixedly provided on the front surface of the rotor housing 6, an explosion-proof ring 13 is fixedly arranged on the inner surface of the heat-radiating front cover plate 12, the outer surface of the rotor shell 6 is electrically connected with an overload cut-off connector 14, the explosion-proof ring 13 and the overload cut-off connector 14 can prevent a rotor component in the motor body 1 from generating overload cut-off, the motor wire connector 15 is electrically connected to the outer surface of the motor body 1 to receive alternating current.

The motor heat radiating fins 4 are fixedly arranged on the motor body 1, the motor heat radiating fins 4 are arranged on the outer surface of the motor body 1 in an annular array, the front surface of the rotor shell 6 is fixedly provided with a heat radiating front cover plate 12, the heat radiating front cover plate 12 is provided with heat radiating holes, the motor body 1 and the rotor shell 6 can be effectively radiated through the designed motor radiating fins 4 and the radiating front cover plate 12, the reinforcing ribs 5 are fixedly arranged on the rotor fixing front cover plate 3, the reinforcing ribs 5 and the fastening bolts 16 can effectively improve the mechanical strength of the utility model, the rotating bearing 11 is rotatably arranged on the outer surface of the front side of the rotor hollow shaft 10, balls are arranged in the rotating bearing 11 to reduce the mechanical friction, the magnet rotor 8 is provided with the permanent magnet 9, and the permanent magnet 9 is annularly wound on the outer surface of the magnet rotor 8, the designed magnet rotor 8 and permanent magnet 9 and hollow rotor shaft 10 can effectively reduce the weight of the shaft and further improve the rotating efficiency.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the principles of the present invention.

Claims

1. The utility model provides a rotor subassembly of flame-proof type three-phase asynchronous motor, includes motor body (1), its characterized in that: a motor mounting base plate (2) is fixedly arranged on the lower surface of the motor body (1), a rotor fixing front cover plate (3) is fixedly arranged on the front surface of the motor body (1), motor cooling fins (4) are fixedly arranged on the outer surface of the motor body (1), reinforcing ribs (5) are fixedly arranged on the front surface of the rotor fixing front cover plate (3), and a rotor shell (6) is rotatably arranged on the inner surface of the motor body (1);

the utility model discloses a motor, including rotor housing (6), the internal surface of rotor housing (6) is fixed and is provided with stator (7), the internal surface of stator (7) rotates and is provided with magnet rotor (8), the surface of magnet rotor (8) is provided with permanent magnet (9), the internal surface of magnet rotor (8) is provided with rotor hollow shaft (10), the front side outer surface of rotor hollow shaft (10) rotates and is provided with rolling bearing (11), the front surface of rotor housing (6) is fixed and is provided with heat dissipation front shroud (12), the internal surface of heat dissipation front shroud (12) is fixed and is provided with flame proof ring (13), the surface electric connection of rotor housing (6) has overload cutout joint (14), the surface electric connection of motor body (1) has motor wire connector (15).

2. The rotor assembly of the flameproof three-phase asynchronous motor according to claim 1, characterized in that: the motor body (1) is fixedly provided with the motor cooling fins (4), and the motor cooling fins (4) are arranged on the outer surface of the motor body (1) in an annular array.

3. The rotor assembly of the flameproof three-phase asynchronous motor according to claim 1, characterized in that: the front surface of the rotor shell (6) is fixedly provided with the heat dissipation front cover plate (12) and the heat dissipation front cover plate (12) is provided with heat dissipation holes.

4. The rotor assembly of the flameproof three-phase asynchronous motor according to claim 1, characterized in that: the rotor fixing front cover plate (3) is fixedly provided with the reinforcing ribs (5) and the reinforcing ribs (5) are welded in an annular array mode on the front surface of the rotor fixing front cover plate (3).

5. The rotor assembly of the flameproof three-phase asynchronous motor according to claim 1, characterized in that: the outer surface of the front side of the rotor hollow shaft (10) is rotatably provided with the rotating bearing (11), and balls are arranged in the rotating bearing (11).

6. The rotor assembly of the flameproof three-phase asynchronous motor according to claim 1, characterized in that: the magnet rotor (8) is provided with the permanent magnet (9) and the permanent magnet (9) is annularly wound on the outer surface of the magnet rotor (8).

7. The rotor assembly of the flameproof three-phase asynchronous motor according to claim 1, characterized in that: and a fastening bolt (16) is fixedly arranged on the front surface of the rotor fixing front cover plate (3).