CN211151780U - An induction motor with dual magnetic circuits - Google Patents

Abstract

The utility model discloses an induction motor operating with dual magnetic circuits, which relates to the technical field of machinery manufacturing, in particular to an induction motor operating with dual magnetic circuits, comprising a fixed back cover, a fixed rotor bearing, a support frame, an external stator, a built-in Stator, housing, front fixed bearing, connecting flange. The induction motor with dual magnetic circuit operation is used through the cooperation of the built-in rotor and the external rotor, using the mutual cooperation of the external stator, the built-in stator, the magnetic yoke and the induction magnetic strip, and the external stator and the built-in stator are used to act on the The two magnetic poles of the permanent magnet do work at the same time, pushing the external rotor and the built-in rotor to rotate, thereby realizing the operation of dual magnetic circuits and dual rotors, changing the traditional single magnetic circuit operation mode of induction motors. The operation of the rotor speeds up the output power of the main shaft of the motor on the induction motor running with dual magnetic circuits, and improves the practicability of the induction motor running with dual magnetic circuits.

Description

An induction motor with dual magnetic circuits

technical field

The utility model relates to the technical field of mechanical manufacturing, in particular to an induction motor with dual magnetic circuit operation.

Background technique

Induction motor, also known as "asynchronous motor", is a device in which the rotor is placed in a rotating magnetic field, and under the action of the rotating magnetic field, a rotational torque is obtained, so that the rotor rotates. The rotor is a rotatable conductor, usually in the shape of a squirrel cage. Existing induction motors use a single stator and rotor drive structure. When the single stator and rotor are running, the rotation frequency is low, which in turn makes the motor output shaft rotate at a low speed, and the power output density is small, and pauses often occur. This phenomenon directly affects the efficiency of the motor in use, and cannot meet people's needs for the use of induction motors. At the same time, because the traditional motor output shaft and rotor are fixedly installed, this leads to very inconvenience in production or installation and maintenance. In addition, the temperature of the motor increases during operation, and the heat dissipation performance of the existing motor is poor, which affects the service life of the motor. Therefore, we propose an induction motor with dual magnetic circuit operation.

Utility model content

In view of the deficiencies of the prior art, the present invention provides an induction motor operating with dual magnetic circuits, which solves the problems raised in the above-mentioned background art.

In order to achieve the above purpose, the utility model is realized through the following technical solutions: an induction motor with dual magnetic circuit operation, including a fixed back cover, a fixed rotor bearing, a support frame, an external stator, a built-in stator, a casing, a front fixed Bearing, connecting flange, motor main shaft, one end of the inner cavity of the casing is fixed with a fixed back cover by bolts, one end of the casing is fixed with a heat dissipation back cover by bolts, and the other end of the casing is fixed by bolts The front cover of the motor is connected, one side of the fixed back cover is fixedly connected with a support frame, the number of the support frame is two, one end of the support frame is movably sleeved with an external rotor, and the other is the support frame One end of the frame is movably sleeved with a built-in rotor, the surface of the external rotor is fixedly installed with a mounting column, one end of the external rotor is fixedly mounted with a fixed flange, and the surface of the mounting column is fixedly connected with a magnetic yoke, The surface of the magnetic yoke is inlaid with induction magnetic strips, the upper surface of the magnetic yoke is fixedly connected with an external stator, the lower surface of the magnetic yoke is fixedly connected with a built-in stator, and one end of the support frame is fixedly connected to the rotor. the upper surface of the bearing.

Optionally, the bottom of the built-in stator is fixedly connected to the inner wall of the fixed back cover, and the outgoing wires of the built-in stator windings extend to the outside of the fixed back cover.

Optionally, a connecting flange is fixedly installed on the lower surface of the fixed flange, and one side of the connecting flange is riveted with the main shaft of the motor.

Optionally, a rear fixed bearing is fixedly installed on one side of the fixed rear cover, the interior of the rear fixed bearing is sleeved to the main shaft of the motor, and one side of the fixed rear cover is in contact with the lower surface of the rotor fixed bearing. Fittingly, a front fixed bearing is fixedly installed in the middle of the front cover of the motor, and the front fixed bearing is sleeved to the surface of the main shaft of the motor.

Optionally, a cooling box is fixedly installed on the inner wall of the housing.

Optionally, the structure of the internal rotor surface is the same as that of the external rotor surface, and the internal rotor, the mounting post, the internal stator and the external stator are adapted to each other.

The utility model provides an induction motor with dual magnetic circuits, which has the following beneficial effects:

1. The induction motor with dual magnetic circuit operation is used in conjunction with the built-in rotor and the external rotor, using the mutual cooperation of the external stator, the built-in stator, the magnetic yoke and the induction magnetic strip, and the external stator and the built-in stator are used separately at the same time. The two magnetic poles of the permanent magnet do work at the same time, pushing the external rotor and the built-in rotor to rotate, thereby realizing the dual-magnetic circuit and dual-rotor operation, which changes the traditional single-magnetic circuit operation of the induction motor. The operation of the double-layer rotor speeds up the output power of the main shaft of the motor on the induction motor running with dual magnetic circuits, and improves the practicability of the induction motor running with dual magnetic circuits.

2. The induction motor with dual magnetic circuit operation is connected with the main shaft of the motor through the use of the connection flange, so that the external rotor and the external rotor act on the main shaft of the motor, and at the same time, they are fixed with screws, which is convenient The disassembly and installation of the motor spindle avoids the problem of difficult disassembly of the traditional motor spindle, and improves the practicability of the motor spindle. At the same time, the cooling box is used to store the cooling water, and then the heat is absorbed by the cooling liquid when the motor is used. , thereby reducing the temperature of the motor and improving the practicability of the motor.

Description of drawings

Fig. 1 is the structural representation of the utility model;

FIG. 2 is a schematic structural diagram of the elevation of the utility model.

In the figure: 1. Rear fixed bearing; 2. Fixed back cover; 3. Rotor fixed bearing; 4. Support frame; 5. External stator; 6. Built-in stator; 7. Magnetic yoke; 8. Inductive magnetic strip; 9 , shell; 10, fixed flange; 11, connecting flange; 12, motor front cover; 13, front fixed bearing; 14, motor spindle; 15, mounting column; 16, cooling box; 17, heat dissipation back cover ; 18. Built-in rotor; 19. External rotor.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example.

Please refer to FIGS. 1 to 2 , the present invention provides a technical solution: an induction motor with dual magnetic circuit operation, comprising a fixed rear cover 2 , a rotor fixed bearing 3 , a support frame 4 , an external stator 5 , and a built-in stator 6 , shell 9, front fixed bearing 13, connecting flange 11, motor main shaft 14, one end of the inner cavity of shell 9 is fixed with a fixed rear cover 2 by bolts, and one end of the shell 9 is fixed with a heat dissipation rear cover by bolts 17. The other end of the housing 9 is fixedly connected to the motor front cover 12 by bolts, and the rear fixed bearing 1 is fixedly installed on one side of the fixed rear cover 2, and the interior of the rear fixed bearing 1 is sleeved to the motor main shaft 14. After fixing, One side of the cover 2 is in contact with the lower surface of the rotor fixed bearing 3 , the front fixed bearing 13 is fixedly installed in the middle of the motor front cover 12 , and the front fixed bearing 13 is sleeved to the surface of the motor main shaft 14 to fix the rear cover One side of 2 is fixedly connected with a support frame 4, the number of support frames 4 is two, one end of one support frame 4 is movably sleeved with an external rotor 19, and one end of the other support frame 4 is movably sleeved with a built-in rotor 18, The structure of the surface of the built-in rotor 18 is the same as that of the external rotor 19. The built-in rotor 18, the mounting column 15, the built-in stator 6 and the external stator 5 are matched. By setting the built-in rotor 18 and the external rotor 19, the built-in rotor 18 and the external rotor 19 have the same structure. When the motor is running, the internal rotor 18 and the external rotor 19 drive the main shaft 14 of the motor to rotate at the same time, which improves the output power of the motor. One of the outer rotors 19 can be activated after the structure of a single rotor is damaged, which improves the stability of the motor. The surface of the outer rotor 19 is fixedly installed with a mounting column 15, and one end of the outer rotor 19 is fixedly installed There is a fixed flange 10 , a connecting flange 11 is fixedly installed on the lower surface of the fixed flange 10 , one side of the connecting flange 11 is riveted with the main shaft 14 of the motor, and the connecting flange 11 is connected with the connecting flange 11 through the connecting flange 11 . The structural form greatly reduces the difficulty of processing and manufacturing the induction motor with dual magnetic circuits, which is conducive to wide-scale promotion, and improves the practicability of the induction motor with dual magnetic circuits. The surface of the mounting column 15 is fixedly connected with magnetic Yoke 7, the surface of the yoke 7 is inlaid with the induction magnetic strips 8, the upper surface of the yoke 7 is fixedly connected with the external stator 5, the lower surface of the magnetic yoke 7 is fixedly connected with the built-in stator 6, and the bottom of the built-in stator 6 is fixedly connected to the The inner wall of the fixed back cover 2 is fixed, and the winding outlet of the built-in stator 6 extends to the outside of the fixed back cover 2. The external stator 5 assembled in the housing 9 and the fixed back cover 2 together form the stator part of the motor. Under the action of the two poles of 8, when the external stator 5 and the built-in stator 6 are energized, the action of the magnetic field simultaneously acts on the induction magnetic strip 8 in the opposite direction, and only driven by the magnetic force, the magnetic yoke 7 starts to rotate around the main shaft 14 of the motor to output power. The induction magnetic strip 8 is simultaneously pushed by the external stator 5 and the built-in stator 6. Through the internal and external stators acting on the permanent magnets on the rotor at the same time, the two magnetic poles of the permanent magnets do work at the same time, pushing the motor rotor to rotate. One end of the support frame 4 is fixedly connected to the upper surface of the rotor fixed bearing 3, and a cooling box 16 is fixedly installed on the inner wall of the housing 9, and the cooling box 16 is used to store the cooling liquid, and then use the cooling box 16 to store the cooling liquid. The liquid cools the inside of the motor and improves the stability of the induction motor.

To sum up, when using the induction motor with dual magnetic circuit operation, the fixed back cover 2 is processed into a flange end cover with a sleeve base, the built-in stator 6 is fixed on the sleeve, and the external stator 5 is fixed on the sleeve. On the housing 9, the other end is fixed by the rotor fixed bearing 3 and the support frame 4 installed on the fixed back cover 2, and the connecting flange 11 and the motor main shaft are fixed by screws, and then the fixed back cover 2, the heat dissipation back cover 17 and the motor shaft are fixed. The front cover 12 of the motor can be fixed with screws respectively.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. Equivalent replacement or modification of the new technical solution and its utility model concept shall be included within the protection scope of the present utility model.

Claims (6)

1. An induction motor with dual magnetic circuit operation, comprising a fixed rear cover (2), a fixed rotor bearing (3), a support frame (4), an external stator (5), a built-in stator (6), and a casing (9) ), a front fixed bearing (13), a connecting flange (11), and a motor spindle (14), characterized in that: one end of the inner cavity of the housing (9) is fixedly installed with a fixed rear cover (2) by bolts, One end of the casing (9) is fixedly mounted with a heat dissipation rear cover (17) by means of bolts, and the other end of the casing (9) is fixedly connected to a motor front cover (12) by means of bolts, and the fixed rear cover (2) ) is fixedly connected with a support frame (4), the number of the support frame (4) is two, one end of the support frame (4) is movably sleeved with an external rotor (19), and the other is One end of the support frame (4) is movably sleeved with a built-in rotor (18), a surface of the external rotor (19) is fixedly mounted with a mounting column (15), and one end of the external rotor (19) is fixedly mounted with a mounting post (15). The flange (10) is fixed, the surface of the mounting post (15) is fixedly connected with a magnetic yoke (7), the surface of the magnetic yoke (7) is inlaid with an induction magnetic strip (8), and the magnetic yoke (7) The upper surface of the yoke (7) is fixedly connected with an external stator (5), the lower surface of the yoke (7) is fixedly connected with a built-in stator (6), and one end of the support frame (4) is fixedly connected to the rotor fixed bearing (3). ) on the top surface. 2. The induction motor with dual magnetic circuit operation according to claim 1, characterized in that: the bottom of the built-in stator (6) is fixedly connected to the inner wall of the fixed rear cover (2), and the built-in stator (6) The outgoing wires of the windings extend to the outside of the fixed back cover (2). 3 . The induction motor with dual magnetic circuit operation according to claim 1 , wherein a connecting flange ( 11 ) is fixedly installed on the lower surface of the fixed flange ( 10 ), and the connecting flange ( 11 ). 4 . ) is riveted with the motor shaft (14). 4 . The induction motor with dual magnetic circuit operation according to claim 1 , wherein a rear fixed bearing ( 1 ) is fixedly installed on one side of the fixed rear cover ( 2 ), and the rear fixed The inner part of the bearing (1) is sleeved to the main shaft (14) of the motor, one side of the fixed rear cover (2) is in contact with the lower surface of the fixed rotor bearing (3), and the middle part of the front cover (12) of the motor The front fixed bearing (13) is fixedly installed, and the front fixed bearing (13) is sleeved to the surface of the motor main shaft (14). 5 . The induction motor with dual magnetic circuits according to claim 1 , wherein a cooling box ( 16 ) is fixedly installed on the inner wall of the casing ( 9 ). 6 . 6. The induction motor with dual magnetic circuit operation according to claim 1, characterized in that: the structure of the surface of the built-in rotor (18) is the same as the structure of the surface of the external rotor (19). 18), the mounting column (15), the built-in stator (6) and the external stator (5) are matched.

Images