Quick-start direct-drive permanent magnet motor

Abstract

The invention relates to a quick-start direct-drive permanent magnet motor, which comprises a base comprising a shell, a tail end cover and an extension end cover, and the tail end cover and the extension end cover are respectively mounted at two ends of the shell; the direct-drive motor is arranged in the shell, the direct-drive motor comprises a direct-drive motor rotor and a direct-drive motor stator surrounding the direct-drive motor rotor, the direct-drive motor rotor comprises a rotating shaft and a supporting cylinder synchronously moving along with the rotating shaft, and the supporting cylinder is fixedly connected with a rotor disc; the auxiliary motor is arranged in the shell and comprises an auxiliary motor stator and an auxiliary motor rotor, the auxiliary motor stator is installed on the extension end cover, the auxiliary motor rotor is laid on the surface of the rotor disc, and the auxiliary motor stator and the auxiliary motor rotor are correspondingly arranged; the direct drive motor and the auxiliary motor are installed in the machine base, the size of the motors is greatly reduced, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of motors, and in particular to a quick-start direct-drive permanent magnet motor. Background Art

[0002] Direct-drive permanent magnet motor is a design that directly combines permanent magnets with motors. It does not require traditional gears or transmission devices and directly transmits power to the load. Direct-drive permanent magnet motors are widely used in many fields due to their advantages such as high efficiency, high precision and low maintenance.

[0003] For some large industrial equipment, the torque required during the startup process is relatively large, which is 2-3 times of its rated operating time. When permanent magnet direct drive motors are selected as their driving devices, in order to meet their larger starting torque multiples, the motors need to be made very large. For new projects, if there is enough space, there will be no impact. However, for renovation projects, most installation spaces are limited.

[0004] Therefore, it is necessary to develop a fast-starting direct-drive permanent magnet motor to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a fast-starting direct-drive permanent magnet motor which optimizes the use of space.

[0006] To achieve the above object, the present invention provides the following technical solution: a fast-starting direct-drive permanent magnet motor, comprising: The base comprises a housing, a tail end cover and an extension end cover respectively mounted at two ends of the housing; A direct-drive motor is disposed in the housing, the direct-drive motor comprises a direct-drive motor rotor and a direct-drive motor stator surrounding the direct-drive motor rotor, the direct-drive motor rotor comprises a rotating shaft and a support cylinder moving synchronously with the rotating shaft, and the support cylinder is fixedly connected with a rotor disk; An auxiliary motor is placed in the shell, the auxiliary motor includes an auxiliary motor stator and an auxiliary motor rotor, the auxiliary motor stator is installed on the extended end cover, the top of the auxiliary motor stator is fixedly connected to the lower surface of the extended end cover, and the bottom extends into the inside of the base to form a plurality of auxiliary stator teeth, the auxiliary stator teeth are distributed at intervals, a plurality of windings are fixedly arranged between the auxiliary stator teeth, and the plurality of windings surround the auxiliary stator teeth one by one, the auxiliary motor rotor includes an auxiliary motor permanent magnet, the auxiliary motor permanent magnet is laid on the upper surface of the rotor disk, and is fixedly connected to the rotor disk, and the auxiliary motor stator and the auxiliary motor rotor are arranged accordingly.

[0007] Furthermore, the rotating shaft is sleeved with a spoke plate, the support tube is installed at the end of the spoke plate, and the center of the support tube and the center of the direct-drive motor rotor are on the same axis.

[0008] Furthermore, the rotor disk is a circular disk, the outer end of which abuts against the top of the support tube and is fixed by bolts or screws.

[0009] Furthermore, the inner end of the rotor disk extends toward the rotating shaft, and the distal end thereof maintains a certain distance from the rotating shaft.

[0010] Furthermore, a cooling channel is provided inside the extended end cover, and the cooling channel corresponds to the auxiliary motor stator.

[0011] Furthermore, a plurality of aluminum bars are provided on the outer side of the support tube, and the plurality of aluminum bars are fixedly connected to the support tube and arranged around the support tube.

[0012] Furthermore, a plurality of magnetic pole cores and a plurality of permanent magnets are provided on the outer side of the aluminum bar, the magnetic pole cores are connected to the plurality of aluminum bars and are arranged around the aluminum bars at intervals, and the plurality of permanent magnets are located between the plurality of magnetic pole cores.

[0013] Furthermore, the stator of the direct-drive motor includes a stator core and a stator coil. The stator core is interference-fitted with the base, the outer side abuts against the inner surface of the base, and a plurality of stator teeth are formed on the inner side. The stator coil surrounds the plurality of stator teeth one by one.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention is a quick-start direct-drive permanent magnet motor with the characteristic of optimizing the use of space. The auxiliary motor stator is installed on the end cover of the extension end, the auxiliary motor rotor is laid on the surface of the rotor disk, and the rotor disk is fixedly connected to the direct-drive motor rotor, thereby realizing the installation of the direct-drive motor and the auxiliary motor in the machine base, greatly reducing the size of the motor and reducing the manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A three-dimensional cross-sectional view of a quick-start direct-drive permanent magnet motor of the present invention; Figure 2 for Figure 1 A three-dimensional cross-sectional view of the base of the quick-start direct-drive permanent magnet motor shown; Figure 3 for Figure 1 A three-dimensional cross-sectional view of a direct-drive permanent magnet motor with quick start shown; Figure 4 for Figure 1 An exploded schematic diagram of a direct-drive permanent magnet motor with rapid start-up is shown; Figure 5 for Figure 4 Another exploded diagram of the quick-start direct-drive permanent magnet motor shown. DETAILED DESCRIPTION

[0017] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation method, structure, features and effects of the direct-drive permanent magnet motor with fast start-up proposed by the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "another embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures or characteristics in one or more embodiments may be combined in any suitable form.

[0018] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0019] The specific scheme of the quick-start direct-drive permanent magnet motor provided by the present invention is described in detail below with reference to the accompanying drawings.

[0020] Please see Figures 1 to 5 The present invention is a quick-start direct-drive permanent magnet motor, which includes a base 1, a direct-drive motor 2 installed in the base 1, and an auxiliary motor 3.

[0021] Please see Figure 1 to Figure 2 The machine base 1 is an outer shell 11 composed of a hollow cylinder. The direct drive motor 2 and the auxiliary motor 3 are both arranged inside the outer shell 11. The bottom of the machine base 1 is provided with a connecting portion 111. The outer end of the connecting portion 111 is fixedly connected to the inner wall of the machine base 1, and the inner end thereof extends toward the center of the machine base 1. A tail end cover 12 and a tail end bearing 13 are also provided at the bottom of the machine base 1. The outer end of the tail end cover 12 is connected to the connecting portion 111, and the inner end thereof extends toward the center of the machine base 1 to connect to the tail end bearing 13. The tail end bearing 13 is located at the bottom center of the machine base 1. An extension end cover 14 and an extension end bearing 15 are provided at the top of the machine base 1. The outer end of the extension end cover 14 is connected to the machine base 1, and the inner end thereof extends toward the center of the machine base 1 to connect to the extension end bearing 15. The extension end bearing 15 is located at the top center of the machine base 1.

[0022] Please see Figure 1 and Figure 3The direct-drive motor 2 includes a direct-drive motor stator 21 and a direct-drive motor rotor 22. The direct-drive motor stator 21 includes a stator core 211 and a stator coil 212. The stator core 211 is interference-fitted with the base 1, and its outer side abuts against the inner surface of the base 1. A plurality of stator teeth 213 are formed on its inner side. One end of the plurality of stator teeth 213 is fixedly connected to the stator core 211, and the other end extends toward the center of the base 1. Secondly, the plurality of stator teeth 213 are distributed at intervals along the inner side of the stator core 211, and the stator coil 212 surrounds the plurality of stator teeth 213 one by one.

[0023] The direct-drive motor rotor 22 includes a rotating shaft 221, a spoke 222 sleeved with the rotating shaft 221, and a support tube 223 installed at the end of the spoke 222. The bottom of the rotating shaft 221 extends into the tail end bearing 13, and the top thereof penetrates the extension end bearing 15 and extends outward. The inner side of the spoke 222 sleeves the rotating shaft 221, and the outer side extends outward horizontally to connect with the support tube 223. The center of the support tube 223 is on the same axis as the center of the direct-drive motor rotor 22. The outer side of the support tube 223 is provided with a There are a number of aluminum bars 224, which are fixedly connected to the support tube 223 and arranged around the support tube 223. A number of pole cores 225 and a number of permanent magnets 226 are provided on the outside of the aluminum bars 224. The pole cores 225 are connected to the number of aluminum bars 224 and are arranged around the aluminum bars 224 at intervals. A number of permanent magnets 226 are located between the number of pole cores 225. The aluminum bars 224 isolate the magnetic fields of the number of pole cores 225 and the number of permanent magnets 226.

[0024] The direct drive motor rotor 22 is also provided with a rotor disk 227. The rotor disk 227 is a circular disk, the outer end of which is abutted against the top of the support tube 223 and is fixed by bolts or screws to achieve a fixed connection between the rotor disk 227 and the support tube 223. The inner end of the rotor disk 227 extends toward the rotating shaft 221, and the end thereof maintains a certain distance from the rotating shaft 221.

[0025] Please see Figures 4 to 5 The auxiliary motor 3 includes an auxiliary motor stator 31 and an auxiliary motor rotor 32. The auxiliary motor stator 31 is fixed to the lower surface of the extension end cover 14. Specifically, the top of the auxiliary motor stator 31 is fixedly connected to the lower surface of the extension end cover 14, and its top extends into the inside of the base 1 to form a plurality of auxiliary stator teeth 311. The auxiliary stator teeth 311 are distributed at intervals, and a plurality of windings 312 are fixedly arranged between the auxiliary stator teeth 311. The plurality of windings 312 surround the auxiliary stator teeth 311 one by one.

[0026] The auxiliary motor rotor 32 includes an auxiliary motor permanent magnet 321 , which is laid on the upper surface of the rotor disk 227 and fixedly connected to the rotor disk 227 . The auxiliary motor permanent magnet 321 is arranged around the rotor disk 227 with the rotating shaft 221 as the center.

[0027] In another embodiment, a cooling channel 4 is provided inside the extension end cover 14 , and the cooling channel 4 corresponds to the auxiliary motor stator 31 . By injecting cooling medium into the cooling channel 4 , the temperature of the auxiliary motor 3 is reduced.

[0028] When a quick-start direct-drive permanent magnet motor of the present invention is started, the direct-drive motor 2 and the auxiliary motor 3 are energized, a magnetic field is formed between the direct-drive motor stator 21 and the direct-drive motor rotor 22, and the direct-drive motor rotor 22 rotates. At the same time, a magnetic field is formed between the auxiliary motor stator 31 and the auxiliary motor rotor 32, and the auxiliary motor permanent magnet 321 and the rotor disk 227 fixedly connected thereto rotate around the rotating shaft 221, and power is transmitted to the support cylinder 223 through the rotor disk 227 to accelerate the rotation speed of the direct-drive motor rotor 22. After the direct-drive motor rotor 22 reaches a predetermined rotation speed, the auxiliary motor 3 is powered off, and the auxiliary motor permanent magnet 321 continues to rotate, thereby the auxiliary motor 3 generates electricity and feeds back to the power grid.

[0029] The present invention is a quick-start direct-drive permanent magnet motor with the characteristic of optimizing the use of space. The stator of the auxiliary motor is installed on the end cover of the extension end, the rotor of the auxiliary motor is laid on the surface of the rotor disk, and the rotor disk is fixedly connected to the rotor of the direct-drive motor. The direct-drive motor and the auxiliary motor are installed in the base, which greatly reduces the size of the motor and reduces the manufacturing cost.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A quick-start direct-drive permanent magnet motor, characterized in that: It includes: The base (1) comprises a housing (11), a rear end cover (12) and an extension end cover (14) respectively mounted at two ends of the housing (11); A direct-drive motor (2) is disposed in the housing (11), the direct-drive motor (2) comprising a direct-drive motor rotor (22) and a direct-drive motor stator (21) surrounding the direct-drive motor rotor (22), the direct-drive motor rotor (22) comprising a rotating shaft (221), a support cylinder (223) moving synchronously with the rotating shaft (221), and the support cylinder (223) being fixedly connected to a rotor disk (227); An auxiliary motor (3) is disposed in the housing (11). The auxiliary motor (3) comprises an auxiliary motor stator (31) and an auxiliary motor rotor (32). The auxiliary motor stator (31) is mounted on the extension end cover (14). The top of the auxiliary motor stator (31) is fixedly connected to the lower surface of the extension end cover (14). The bottom of the auxiliary motor stator (31) extends into the interior of the machine base (1) to form a plurality of auxiliary stator teeth (311). The auxiliary stator teeth (311) are arranged at intervals. A plurality of windings (312) are fixedly arranged between the plurality of auxiliary stator teeth (311). The plurality of windings (312) surround the auxiliary stator teeth (311) one by one. The auxiliary motor rotor (32) comprises an auxiliary motor permanent magnet (321). The auxiliary motor permanent magnet (321) is laid on the upper surface of the rotor disk (227) and is fixedly connected to the rotor disk (227). The auxiliary motor stator (31) and the auxiliary motor rotor (32) are arranged accordingly.

2. The quick-start direct-drive permanent magnet motor according to claim 1, characterized in that: The rotating shaft (221) is sleeved with a spoke plate (222), the end of the spoke plate (222) is provided with the support cylinder (223), and the center of the support cylinder (223) and the center of the direct-drive motor rotor (22) are on the same axis.

3. The quick-start direct-drive permanent magnet motor according to claim 1, characterized in that: The rotor disk (227) is a circular disk, the outer end of which abuts against the top of the support cylinder (223) and is fixed by bolts or screws.

4. The quick-start direct-drive permanent magnet motor according to claim 3, characterized in that: The inner end of the rotor disk (227) extends toward the rotating shaft (221), and the distal end thereof maintains a certain distance from the rotating shaft (221).

5. The quick-start direct-drive permanent magnet motor according to claim 1, characterized in that: The extension end cover (14) has a cooling channel (4) inside, and the cooling channel (4) corresponds to the auxiliary motor stator (31).

6. The quick-start direct-drive permanent magnet motor according to claim 1, characterized in that: A plurality of aluminum bars (224) are provided on the outside of the support tube (223); the plurality of aluminum bars (224) are fixedly connected to the support tube (223) and are arranged around the support tube (223).

7. The quick-start direct-drive permanent magnet motor according to claim 6, characterized in that: A plurality of magnetic pole cores (225) and a plurality of permanent magnets (226) are provided on the outside of the aluminum bar (224); the magnetic pole cores (225) are connected to the plurality of aluminum bars (224) and are arranged around the aluminum bar (224) at intervals; and the plurality of permanent magnets (226) are located between the plurality of magnetic pole cores (225).

8. The quick-start direct-drive permanent magnet motor according to claim 1, characterized in that: The direct-drive motor stator (21) comprises a stator core (211) and a stator coil (212); the stator core (211) is interference-fitted with the machine base (1); the outer side abuts against the inner surface of the machine base (1); a plurality of stator teeth (213) are formed on the inner side; and the stator coil (212) surrounds the plurality of stator teeth (213) one by one.

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