Motor stator assembly, synchronous motor and passenger transportation device

Abstract

The present application provides a motor stator assembly, a synchronous motor, and a passenger transportation device. The motor stator assembly includes: a stator base, which is arranged axially around the motor drive shaft, the stator base having a receiving space and two stator end faces; the receiving space is arranged along the circumferential outer side of the stator base between the two stator end faces; and a plurality of coil assemblies, which are respectively inserted in the receiving space along the radial direction of the stator base. According to the motor stator assembly, the synchronous motor, and the passenger transportation device of the present application, by providing a plurality of coil assemblies inserted in the stator base, they can be maintained or replaced as needed, and the maintenance is convenient, less time-consuming, and also has reliable performance.

Description

Technical Field

[0001] The present application relates to the field of motors, and more specifically, to a synchronous motor for generating an axial magnetic field and its components. Background Art

[0002] With the continuous improvement of the performance of permanent magnetic materials such as rare earth, permanent magnet synchronous motors with high efficiency and high power density as their notable features have developed rapidly and have been widely used in many industrial fields such as elevators and automobiles.

[0003] Permanent magnet synchronous motors are usually divided into axial magnetic field permanent magnet synchronous motors and radial magnetic field permanent magnet synchronous motors. Among them, axial magnetic field permanent magnet synchronous motors not only have the characteristics of short axial size, small volume, compact structure, etc., but also have obvious advantages in many special applications due to their high torque density and high efficiency. They have become a hot spot for research and are mainly used in motion control, especially in direct drive applications with small axial size requirements and large torque requirements, such as elevator drive motors.

[0004] For this type of motor, an overall overhaul is required when maintaining or replacing parts. For example, if there is a problem with the stator, the entire stator needs to be replaced, which is relatively complicated to repair.

[0005] Therefore, how to provide a permanent magnet synchronous motor and its components that are more convenient to maintain has become a technical problem that needs to be solved urgently. Summary of the invention

[0006] The present application aims to provide a motor stator assembly that is easy to maintain.

[0007] The present application also aims to provide a synchronous motor that is easy to maintain.

[0008] The present application also aims to provide a passenger transport device having a synchronous motor that is easy to maintain

[0009] To achieve the purpose of the present application, according to one aspect of the present application, a motor stator assembly is provided, comprising: a stator base, which is axially arranged around a motor drive shaft, the stator base having a accommodating space and two stator end faces; the accommodating space is arranged along the circumferential outer side of the stator base between the two stator end faces; and a plurality of coil assemblies, which are respectively inserted in the accommodating space along the radial direction of the stator base.

[0010] Optionally, a plurality of positioning holes are provided on the stator end surface of the stator base; wherein, in an assembled state, the coil assembly is embedded in the positioning holes of the stator base; in a disassembled state, the coil assembly is removed from the positioning holes of the stator base.

[0011] Optionally, a plurality of the positioning holes are evenly arranged on the stator end surface along the circumferential direction; and the coil assembly is evenly embedded in the positioning holes along the circumferential direction.

[0012] Optionally, a positioning ring is further included, which is sleeved on the outer edge of the stator end surface and is used to limit the coil assembly from escaping from the accommodating space radially outward.

[0013] Optionally, a positioning protrusion is circumferentially arranged on the positioning ring toward the accommodating space, and the positioning protrusion is clamped between adjacent coil assemblies and is used to limit the coil assembly from radially outwardly escaping from the accommodating space.

[0014] Optionally, a drive shaft sleeve extending axially is provided in the middle of the stator base, and a drive shaft hole is axially opened in the drive shaft sleeve.

[0015] Optionally, the stator base is made by integral combination.

[0016] Optionally, the stator end face is made by connecting a plurality of stator end face segments.

[0017] Optionally, the coil assembly includes: a core extending axially; a coil arranged axially around the core; and a coil base arranged axially around the core; wherein the coil base limits two axial ends of the coil.

[0018] Optionally, the core has an isosceles trapezoidal or sector ring cross section along the axial direction.

[0019] Optionally, the core body is made of laminated iron core materials.

[0020] Optionally, the coil is made of a copper wire covered with an insulating layer.

[0021] Optionally, the coil base is made of a flame retardant material with a temperature resistance of not less than 100°C.

[0022] To achieve the purpose of the present application, according to another aspect of the present application, a synchronous motor is also provided, which is used to generate an axial magnetic field, and comprises: the motor stator assembly as described above; a first rotor disk and a second rotor disk, which are axially arranged on both sides of the stator base respectively; and a drive shaft axially arranged to pass through the first rotor disk, the motor stator assembly and the second rotor disk in sequence.

[0023] Optionally, a plurality of permanent magnets are circumferentially arranged on a side of the first rotor disk facing the stator base; and / or a plurality of permanent magnets and / or magnetic steels are circumferentially arranged on a side of the second rotor disk facing the stator base.

[0024] Optionally, a plurality of mounting grooves are provided on the first rotor disk and / or the second rotor disk; and a plurality of the permanent magnets and / or magnetic steels are embedded in the mounting grooves.

[0025] Optionally, the plurality of permanent magnets are arranged in an alternating pattern of positive and negative poles along the circumferential direction; and / or the plurality of magnetic steels are arranged in an alternating pattern of positive and negative poles along the circumferential direction.

[0026] Optionally, a positioning strip is provided along the circumferential outer side of the first rotor disk and / or the second rotor disk on one side facing the stator base, and positioning grooves are provided on both sides of the stator base; the positioning strip cooperates with the positioning grooves.

[0027] Optionally, a matching hole is provided in the middle of the first rotor disk and / or the second rotor disk along the axial direction for the drive shaft to pass through.

[0028] To achieve the purpose of the present application, according to another aspect of the present application, a passenger transportation device is provided, which includes: the synchronous motor as described above.

[0029] According to the motor stator assembly, synchronous motor and passenger transportation device of the present application, by providing a plurality of coil assemblies inserted in the stator base, they can be maintained or replaced as needed, and maintenance is convenient, time-saving and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of an embodiment of a synchronous motor of the present application.

[0031] Figure 2 is a schematic diagram of an embodiment of a coil assembly of the present application. DETAILED DESCRIPTION

[0032] The present application provides embodiments of a motor stator assembly and a synchronous motor. Figure 1 , which shows a synchronous motor for generating an axial magnetic field. The synchronous motor comprises a motor stator assembly 100, a first rotor disk 200, a second rotor disk 300 and a drive shaft. The first rotor disk 200 and the second rotor disk 300 are respectively arranged on both sides of a stator base 110 along the axial direction; and the drive shaft is arranged through the first rotor disk 200, the motor stator assembly 100 and the second rotor disk 300 in sequence along the axial direction.

[0033] More specifically, Figure 1The motor stator assembly 100 shown includes a stator base 110 arranged axially around the motor drive shaft, and the stator base 110 has a receiving space 112 and two stator end faces 111; wherein the receiving space 112 is arranged between the two stator end faces 111 along the circumferential outer side of the stator base 110. The motor stator assembly 100 also includes a plurality of coil assemblies 120, which are respectively inserted in the receiving space 112 along the radial direction of the stator base 110. Under this arrangement, the stator base 110 and the coil assembly 120 in the motor stator assembly 100 can be manufactured separately and then assembled. And when the coil assembly 120 needs maintenance and replacement, it is taken out from the stator base 110. It allows maintenance or replacement work to be carried out as needed, and the maintenance is convenient, less time-consuming, and the motor stator assembly itself still has very reliable and efficient performance.

[0034] See also Figure 2 , which shows a specific structural form of the coil assembly 120 assembled in the motor stator assembly 100. The coil assembly 120 includes a core 121 extending in the axial direction, a coil arranged axially around the core 121, and a coil base 123 arranged axially around the core 121. The coil base 123 limits the two axial ends of the coil. Under this arrangement, the coil has a reliable positioning relative to the core, so that it can stably and reliably generate electromagnetic excitation when it is installed in the stator base.

[0035] More specifically, the core 121 has an isosceles trapezoidal or fan-shaped cross section along the axial direction, so that when evenly arranged along the circumference of the stator base of the motor stator assembly 100, a better match can be formed, thereby ensuring the working performance of the motor. In addition, as some optional specific configurations, the core 121 can be made of a laminated iron core material; the coil can be made of a copper wire covered with an insulating layer; and the coil base 123 can be made of a flame-retardant material with a temperature resistance of not less than 100°C.

[0036] See also Figure 1 , which also shows an optional specific assembly arrangement of the coil assembly 120 and the stator base 110. Among them, a plurality of positioning holes 111a are provided on the stator end surface 111 of the stator base 110. In the assembled state, the coil assembly 120 is embedded in the positioning holes 111a of the stator base 110; and in the disassembled state, the coil assembly 120 can be easily taken out of the positioning holes 111a of the stator base 110.

[0037] More specifically, in order to facilitate loading and unloading while ensuring the electromagnetic excitation effect, a plurality of positioning holes 111 a may be evenly arranged on the stator end surface 111 along the circumferential direction; and at the same time, the coil assembly 120 may be evenly embedded in the positioning holes 111 a along the circumferential direction.

[0038] In addition, in order to ensure that the coil assembly 120 does not fall off after being assembled into the accommodation space on the stator base 110, a positioning ring 130 may be provided and sleeved on the outer edge of the stator end surface 111. The positioning ring 130 may be used to limit the coil assembly 120 from being radially outwardly separated from the accommodation space 112. On this basis, a positioning protrusion 131 may be circumferentially provided on the positioning ring 130 toward the accommodation space 112. After the positioning ring 130 is sleeved in place, the positioning protrusion 131 is just stuck between adjacent coil assemblies 120, so it can be better used to limit the coil assembly 120 from being radially outwardly separated from the accommodation space 112.

[0039] Optionally, a drive shaft sleeve 113 extending axially may be provided in the middle of the stator base 110 , and a drive shaft hole 113 a is axially provided in the drive shaft sleeve 113 for the drive shaft to pass therethrough.

[0040] In addition, the stator base 110 can be made by integral combination, thereby improving the product integration. In addition, the stator end face 111 can also be made by connecting a plurality of stator end face segments 111b, 111c, thereby being more convenient to manufacture and install.

[0041] In the above, although combined with Figure 1 The motor stator assembly used for the synchronous motor in the aforementioned embodiment is described, but in fact the motor stator assembly can also be used for other motors as long as there is no conflicting configuration.

[0042] See also Figure 1 , other components in the synchronous motor will be described as follows.

[0043] For example, for the rotor disks arranged on both sides of the motor stator assembly 100, a plurality of permanent magnets 210 may be arranged circumferentially on the side of the first rotor disk 200 facing the stator base 110; and a plurality of permanent magnets and / or magnetic steels 310 may be arranged circumferentially on the side of the second rotor disk 300 facing the stator base 110. In this arrangement, it is possible to choose to use a permanent magnet rotor only on one side of the motor stator assembly 100 and a magnetic steel rotor on the other side to reduce costs; or it is possible to choose to use permanent magnet rotors on both sides of the motor stator assembly 100 to improve performance.

[0044] Optionally, as a specific arrangement, the first rotor disk 200 is provided with a plurality of mounting grooves 220, and a plurality of permanent magnets 210 are embedded in the mounting grooves 220; and a plurality of mounting grooves 320 are provided on the second rotor disk 300. A plurality of permanent magnets and / or magnetic steels 310 are embedded in the mounting grooves 320.

[0045] Optionally, as a specific arrangement, a positioning strip 230 may be provided along the circumferential outer side of the first rotor disk 200 on the side facing the stator base 110, and a positioning strip 330 may be provided along the circumferential outer side of the second rotor disk 300 on the side facing the stator base 110; and positioning grooves may be provided on both sides of the stator base 110; so that the positioning strip 230 and the positioning strip 330 are respectively matched with the positioning grooves to form accurate positioning between the stator base and the rotor disk.

[0046] In addition, multiple permanent magnets and / or multiple magnetic steels can be arranged on the rotor disk in a circumferential direction with positive and negative poles alternating.

[0047] Optionally, a matching hole 240 opened axially for the drive shaft to pass through may be provided in the middle of the first rotor disk 200; and a matching hole 340 opened axially for the drive shaft to pass through may be provided in the middle of the second rotor disk 300, so that the drive shaft can be arranged therethrough.

[0048] In addition, although not shown in the figure, an embodiment of a passenger transport device is also provided herein. The passenger transport device, such as an elevator, can include a synchronous motor described in any of the above embodiments or a combination thereof, so it also has corresponding technical effects, which will not be described in detail here.

[0049] The above examples mainly illustrate the motor stator assembly, synchronous motor and passenger transportation device of the present application. Although only some of the embodiments of the present application are described, it should be understood by those skilled in the art that the present application can be implemented in many other forms without departing from its subject matter and scope. Therefore, the examples and embodiments shown are regarded as illustrative rather than restrictive, and the present application may cover various modifications and substitutions without departing from the spirit and scope of the present application as defined in the appended claims.

Claims

1. A motor stator assembly, characterized in that: include: A stator base is arranged axially around the motor drive shaft, the stator base having a receiving space and two stator end faces; the receiving space is arranged between the two stator end faces along the circumferential outer side of the stator base; and A plurality of coil assemblies are respectively inserted into the accommodation space along the radial direction of the stator base, Wherein, the motor stator assembly also includes a positioning ring, which is sleeved on the outer edge of the stator end face, and the inner circumferential surface of the positioning ring does not contact the circumferential surface of the coil assembly, and wherein a positioning protrusion is circumferentially arranged on the positioning ring toward the accommodating space, and the positioning protrusion is clamped between adjacent coil assemblies and is used to limit the coil assembly from radially outwardly detaching from the accommodating space.

2. The motor stator assembly according to claim 1, characterized in that: A plurality of positioning holes are provided on the stator end surface of the stator base; wherein, in an assembled state, the coil assembly is embedded in the positioning holes of the stator base; in a disassembled state, the coil assembly is taken out of the positioning holes of the stator base.

3. The motor stator assembly according to claim 2, characterized in that: The plurality of positioning holes are evenly arranged on the stator end surface along the circumferential direction; and the coil components are evenly embedded in the positioning holes along the circumferential direction.

4. The motor stator assembly according to any one of claims 1 to 3, characterized in that: A drive shaft sleeve extending axially is arranged in the middle of the stator base, and a drive shaft hole is axially provided in the drive shaft sleeve.

5. The motor stator assembly according to any one of claims 1 to 3, characterized in that: The stator base is made by integral combination.

6. The motor stator assembly according to any one of claims 1 to 3, characterized in that: The stator end face is manufactured by connecting a plurality of stator end face segments.

7. The motor stator assembly according to any one of claims 1 to 3, characterized in that: The coil assembly comprises: a core extending in an axial direction; a coil arranged axially around the core; and a coil base arranged axially around the core; wherein the coil base limits two axial ends of the coil.

8. The motor stator assembly according to claim 7, characterized in that: The core body has an isosceles trapezoidal or sector ring cross section along the axial direction.

9. The motor stator assembly according to claim 7, characterized in that: The core body is made of laminated iron core materials.

10. The motor stator assembly according to claim 7, characterized in that: The coil is made of a copper wire covered with an insulating layer.

11. The motor stator assembly according to claim 7, characterized in that: The coil base is made of a flame retardant material with a temperature resistance of not less than 100°C.

12. A synchronous motor for generating an axial magnetic field, characterized in that: include: A motor stator assembly as claimed in any one of claims 1 to 11; a first rotor disk and a second rotor disk, which are axially arranged on both sides of the stator base respectively; and a drive shaft axially passing through the first rotor disk, the motor stator assembly and the second rotor disk in sequence.

13. The synchronous motor according to claim 12, characterized in that: A plurality of permanent magnets are circumferentially arranged on a side of the first rotor disk facing the stator base; and / or a plurality of permanent magnets and / or magnetic steels are circumferentially arranged on a side of the second rotor disk facing the stator base.

14. The synchronous motor according to claim 13, characterized in that: A plurality of mounting grooves are arranged on the first rotor disk and / or the second rotor disk; a plurality of permanent magnets and / or magnetic steels are embedded in the mounting grooves.

15. The synchronous motor according to claim 13, characterized in that: The plurality of permanent magnets are arranged in a staggered manner with positive and negative poles along the circumferential direction; and / or the plurality of magnetic steels are arranged in a staggered manner with positive and negative poles along the circumferential direction.

16. The synchronous motor according to claim 12, characterized in that: A positioning strip is arranged along the circumferential outer side of one side of the first rotor disc and / or the second rotor disc facing the stator base, and positioning grooves are arranged on both sides of the stator base; the positioning strip cooperates with the positioning grooves.

17. The synchronous motor according to claim 12, characterized in that: A matching hole is axially provided in the middle of the first rotor disk and / or the second rotor disk for the drive shaft to pass through.

18. A passenger transport device, characterized in that: include: A synchronous motor as claimed in any one of claims 12 to 17.

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