阅读说明：本技术 电机定子组件、同步电机及乘客运输装置 (Motor stator assembly, synchronous motor and passenger transportation device ) 是由 李必春 于 2018-08-16 设计创作，主要内容包括：本申请提供一种电机定子组件、同步电机及乘客运输装置。该电机定子组件包括：定子基座,其沿轴向环绕电机驱动轴设置,所述定子基座具有容纳空间以及两个定子端面；所述容纳空间在两个所述定子端面之间沿所述定子基座的周向外侧设置；以及多个线圈组件,其分别沿述定子基座的径向插设在所述容纳空间中。根据本申请的电机定子组件、同步电机及乘客运输装置,通过提供插设在定子基座中的多个线圈组件,使得其可以按需进行维护或更换,维护方便、耗时少且同样具有可靠性能。(The application provides a motor stator subassembly, synchronous machine and passenger conveyer. This motor stator subassembly includes: the stator base is arranged around the motor driving shaft along the axial direction and is provided with an accommodating space and two stator end faces; the accommodating space is arranged between the two stator end faces along the circumferential outer side of the stator base; and a plurality of coil assemblies respectively inserted into the accommodating space in a radial direction of the stator base. According to motor stator subassembly, synchronous machine and passenger conveyer of this application, through providing a plurality of coil pack of inserting and establishing in the stator base for it can be maintained or change as required, and it is convenient, consuming time few and also have reliable performance.)

1. An electric machine stator assembly, comprising:

the stator base is arranged around the motor driving shaft along the axial direction and is provided with an accommodating space and two stator end faces; the accommodating space is arranged between the two stator end faces along the circumferential outer side of the stator base; and

and a plurality of coil assemblies respectively inserted into the accommodating space in a radial direction of the stator base.

2. The motor stator assembly of claim 1 wherein the stator base has a stator end surface with a plurality of locating holes; in an assembly state, the coil assembly is embedded in the positioning hole of the stator base; in a disassembled state, the coil assembly is taken out of the positioning hole of the stator base.

3. The electric machine stator assembly of claim 2, wherein a plurality of said locating holes are evenly circumferentially arranged on said stator end face; and the coil assembly is uniformly embedded in the positioning hole along the circumferential direction.

4. The electric motor stator assembly as recited in any of claims 1 to 3, further comprising a positioning ring disposed around an outer edge of the stator end surface and adapted to limit the coil assembly from exiting the receiving space radially outward.

5. The electric motor stator assembly of claim 4, wherein a positioning protrusion facing the receiving space is circumferentially provided on the positioning ring, and the positioning protrusion is caught between adjacent coil assemblies and serves to restrict the coil assemblies from being separated from the receiving space radially outward.

6. The motor stator assembly according to any one of claims 1 to 3, wherein a driving sleeve extending in the axial direction is disposed at the middle of the stator base, and a driving shaft hole is formed in the driving sleeve in the axial direction.

7. The electric machine stator assembly of any of claims 1-3, wherein the stator base is integrally formed.

8. An electric machine stator assembly according to any of claims 1-3, characterized in that the stator end face is made of a plurality of stator end face segments connected.

9. An electric machine stator assembly according to any of claims 1-3, characterized in that the coil assembly comprises: a core extending in an axial direction; a coil disposed axially around the core; and a coil base disposed axially around the core; wherein the coil base limits two axial ends of the coil.

10. The electric machine stator assembly of claim 9, wherein the core has an isosceles trapezoid or sector ring cross-section in an axial direction.

11. The electric machine stator assembly of claim 9, wherein the core is laminated from a ferrous core material.

12. The electric machine stator assembly of claim 9, wherein the coils are made of copper wire covered with an insulating layer.

13. The electric machine stator assembly of claim 9, wherein the coil base is made of a flame retardant material having a temperature resistance of not less than 100 ℃.

14. A synchronous machine for generating an axial magnetic field, comprising: an electric machine stator assembly as claimed in any one of claims 1 to 13; the first rotor disc and the second rotor disc are respectively arranged on two sides of the stator base along the axial direction; and the driving shaft sequentially penetrates through the first rotor disc, the motor stator assembly and the second rotor disc along the axial direction.

15. The synchronous machine according to claim 14, wherein the first rotor disk is provided with a plurality of permanent magnets in a circumferential direction on a side facing the stator base; and/or one side of the second rotor disc, which faces the stator base, is provided with a plurality of permanent magnets and/or magnetic steels along the circumferential direction.

16. A synchronous machine according to claim 15, characterized in that a plurality of mounting slots are provided on the first rotor disc and/or the second rotor disc; and the permanent magnets and/or the magnetic steels are embedded in the mounting groove.

17. The synchronous machine of claim 15, wherein the plurality of permanent magnets are arranged in a circumferentially staggered positive and negative arrangement; and/or a plurality of the magnetic steels are arranged in a positive-negative staggered manner along the circumferential direction.

18. The synchronous machine according to claim 14, wherein the first rotor disc and/or the second rotor disc is provided with a positioning strip along a circumferential outer side toward one side of the stator base, and positioning grooves are provided on both sides of the stator base; the positioning strip is matched with the positioning groove.

19. The synchronous machine according to claim 14, wherein a fitting hole for passing the drive shaft is provided in a middle portion of the first rotor disk and/or the second rotor disk in an axial direction.

20. A passenger transportation device, comprising: a synchronous machine as claimed in any of claims 14 to 19.

Technical Field

The present application relates to the field of electric machines, and more particularly, to a synchronous machine that generates an axial magnetic field and components thereof.

Background

With the continuous improvement of the performance of permanent magnet materials such as rare earth and the like, a permanent magnet synchronous motor with high efficiency and high power density as remarkable characteristics is rapidly developed and widely applied to a plurality of industrial fields such as elevators, automobiles and the like.

Permanent magnet synchronous motors are generally classified into axial field permanent magnet synchronous motors and radial field permanent magnet synchronous motors. The axial magnetic field permanent magnet synchronous motor not only has the characteristics of short axial size, small volume, compact structure and the like, but also has obvious superiority in a plurality of special application occasions due to high torque density and high efficiency, has become a research hotspot, is mainly applied to motion control, and is particularly suitable for direct drive occasions with smaller axial size requirement and large torque requirement, such as an elevator driving motor.

For such motors, 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 makes maintenance relatively complicated.

Therefore, how to provide a permanent magnet synchronous motor and parts thereof which are more convenient to maintain becomes a technical problem to be solved urgently.

Disclosure of Invention

The present application aims to provide a motor stator assembly that is convenient to maintain.

The present application also aims to provide a synchronous machine that is convenient to maintain.

The present application further aims to provide a passenger transportation device with a synchronous motor that is convenient to maintain

To achieve the object of the present application, according to one aspect of the present application, there is provided a stator assembly of an electric machine, including: the stator base is arranged around the motor driving shaft along the axial direction and is provided with an accommodating space and two stator end faces; the accommodating space is arranged between the two stator end faces along the circumferential outer side of the stator base; and a plurality of coil assemblies respectively inserted into the accommodating space in a radial direction of the stator base.

Optionally, a plurality of positioning holes are formed in the stator end surface of the stator base; in an assembly state, the coil assembly is embedded in the positioning hole of the stator base; in a disassembled state, the coil assembly is taken out of the positioning hole of the stator base.

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

Optionally, the stator further comprises a positioning ring, which is sleeved on the outer edge of the end surface of the stator and is used for limiting the coil assembly to be separated from the accommodating space radially outwards.

Optionally, a positioning protrusion facing the accommodating space is circumferentially disposed on the positioning ring, and the positioning protrusion is clamped between adjacent coil assemblies and used for limiting the coil assemblies from being separated from the accommodating space in a radial direction outwards.

Optionally, a driving shaft sleeve extending in the axial direction is arranged in the middle of the stator base, and a driving shaft hole is formed in the driving shaft sleeve in the axial direction.

Optionally, the stator base is integrally formed.

Optionally, the stator end face is made of a plurality of stator end face segments connected.

Optionally, the coil assembly comprises: a core extending in an axial direction; a coil disposed axially around the core; and a coil base disposed axially around the core; wherein the coil base limits two axial ends of the coil.

Optionally, the core has an isosceles trapezoid or a sector ring cross section in the axial direction.

Optionally, the core is laminated from a ferrous core material.

Optionally, the coil is made of copper wire coated with an insulating layer.

Optionally, the coil base is made of a flame retardant material with temperature resistance of not less than 100 ℃.

To achieve the object of the present application, according to another aspect of the present application, there is also provided a synchronous machine for generating an axial magnetic field, including: a motor stator assembly as described above; the first rotor disc and the second rotor disc are respectively arranged on two sides of the stator base along the axial direction; and the driving shaft sequentially penetrates through the first rotor disc, the motor stator assembly and the second rotor disc along the axial direction.

Optionally, the first rotor disc is provided with a plurality of permanent magnets along the circumferential direction towards one side of the stator base; and/or one side of the second rotor disc, which faces the stator base, is provided with a plurality of permanent magnets and/or magnetic steels along the circumferential direction.

Optionally, a plurality of mounting slots are provided on the first rotor disc and/or the second rotor disc; and the permanent magnets and/or the magnetic steels are embedded in the mounting groove.

Optionally, the plurality of permanent magnets are arranged in a positive-negative staggered manner along the circumferential direction; and/or a plurality of the magnetic steels are arranged in a positive-negative staggered manner along the circumferential direction.

Optionally, a positioning strip is arranged on one side, facing the stator base, of the first rotor disc and/or the second rotor disc along the circumferential outer side, and positioning grooves are arranged on two sides of the stator base; the positioning strip is matched with the positioning groove.

Optionally, a matching hole for the driving shaft to pass through is formed in the middle of the first rotor disc and/or the second rotor disc along the axial direction.

To achieve the object of the present application, according to still another aspect of the present application, there is also provided a passenger transportation device including: a synchronous machine as hereinbefore described.

According to motor stator subassembly, synchronous machine and passenger conveyer of this application, through providing a plurality of coil pack of inserting and establishing in the stator base for it can be maintained or change as required, and it is convenient, consuming time few and also have reliable performance.

Drawings

Fig. 1 is a schematic view of an embodiment of the synchronous machine of the present application.

FIG. 2 is a schematic diagram of one embodiment of a coil assembly of the present application.

Detailed Description

Embodiments of a motor stator assembly and a synchronous motor are provided herein. Referring to fig. 1, a synchronous machine for generating an axial magnetic field is shown. The synchronous machine includes a machine stator assembly 100, a first rotor disc 200, a second rotor disc 300, and a drive shaft. Wherein the first rotor disk 200 and the second rotor disk 300 are respectively disposed on both sides of the stator base 110 in the axial direction; and the driving shaft is disposed through the first rotor disc 200, the motor-stator assembly 100 and the second rotor disc 300 in sequence along the axial direction.

More specifically, the motor stator assembly 100 shown in fig. 1 includes a stator base 110 disposed axially around a motor drive shaft, the stator base 110 having an accommodation space 112 and two stator end faces 111; wherein the accommodation space 112 is provided along the circumferential outer side of the stator base 110 between the two stator end surfaces 111. The motor-stator assembly 100 further includes a plurality of coil assemblies 120 respectively inserted in the accommodating space 112 in a radial direction of the stator base 110. With this arrangement, the stator base 110 and the coil assembly 120 in the motor stator assembly 100 may be manufactured separately and then assembled. And removed from stator base 110 when coil assembly 120 requires maintenance replacement. The motor stator assembly can be maintained or replaced as required, the maintenance is convenient, the consumed time is short, and the motor stator assembly still has very reliable and efficient performance.

Referring again to fig. 2, a specific form of the coil assembly 120 assembled in the motor stator assembly 100 is shown. The coil assembly 120 includes a core 121 extending in the axial direction, a coil arranged around the core 121 in the axial direction, and a coil base 123 arranged around the core 121 in the axial direction. Wherein the coil base 123 limits both axial ends of the coil. With this arrangement, the coil has a reliable positioning with respect to the core so that the electromagnetic excitation action can be generated stably and reliably when it is incorporated into the stator base.

More specifically, the core 121 has an isosceles trapezoid or sector ring cross section along the axial direction, so that when the core is uniformly arranged along the circumferential direction of the stator base of the motor stator assembly 100, a better matching can be formed, thereby ensuring the working performance of the motor. Further, as some alternative specific configurations, the core 121 may be made of a laminated iron core material; the coil can be made of copper wire coated with an insulating layer; and the coil base 123 may be made of a flame retardant material having a temperature resistance of not less than 100 c.

Turning to fig. 1, an alternative specific assembly arrangement of the coil assembly 120 and the stator base 110 is also shown. The stator end surface 111 of the stator base 110 is provided with a plurality of positioning holes 111 a. In the assembled state, the coil assembly 120 is embedded in the positioning hole 111a of the stator base 110; in the disassembled state, the coil assembly 120 can be easily taken out from the positioning hole 111a of the stator base 110.

More specifically, in order to secure the electromagnetic excitation effect while facilitating the attachment and detachment, a plurality of positioning holes 111a may be uniformly arranged on the stator end surface 111 in the circumferential direction; and at the same time, the coil assembly 120 is uniformly embedded in the positioning hole 111a along the circumferential direction.

In addition, in order to ensure that the coil assembly 120 does not fall off after being assembled in the accommodating space of the stator base 110, a positioning ring 130 may be further disposed and sleeved on the outer edge of the stator end surface 111. The positioning ring 130 may serve to limit the coil assembly 120 from exiting the accommodating space 112 radially outward. On this basis, a positioning projection 131 facing the accommodating space 112 may be provided on the positioning ring 130 in the circumferential direction. After the positioning ring 130 is put in place, the positioning protrusions 131 are just caught between the adjacent coil assemblies 120, so that they can be better used for restricting the coil assemblies 120 from being separated from the accommodating space 112 radially outward.

Alternatively, a driving shaft sleeve 113 protruding in the axial direction may be disposed at the middle of the stator base 110, and a driving shaft hole 113a is opened in the driving shaft sleeve 113 in the axial direction for the driving shaft to pass through.

In addition, the stator base 110 may be integrally formed, thereby improving product integration. In addition, the stator end face 111 can also be made of a plurality of stator end face sections 111b, 111c connected, which facilitates manufacture and assembly.

In the above, although the motor-stator assembly used in the synchronous motor in the foregoing embodiment is described with reference to fig. 1, the motor-stator assembly may be used in other motors as long as it has no conflicting configuration.

Referring again to fig. 1, the other components in the synchronous machine will be described continuously as follows.

For example, for rotor disks disposed on both sides of the motor-stator assembly 100, a plurality of permanent magnets 210 may be provided in a circumferential direction on a side of the first rotor disk 200 facing the stator base 110; and a side of the second rotor disk 300 facing the stator base 110 is provided with a plurality of permanent magnets and/or magnetic steels 310 along a circumferential direction. In this arrangement, the permanent magnet rotor can be selected to be used only on one side of the motor stator assembly 100, and the magnetic steel rotor is used on the other side to reduce the cost; the use of permanent magnet rotors on both sides of the electric machine stator assembly 100 may also be an option to improve performance.

Alternatively, 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 the second rotor disk 300 is provided with a plurality of mounting slots 320. A plurality of permanent magnets and/or magnetic steels 310 are embedded in the mounting groove 320.

Alternatively, as a specific arrangement, the positioning bars 230 may be provided along the circumferential outside on the side of the first rotor disk 200 facing the stator base 110, and the positioning bars 330 may be provided along the circumferential outside on the side of the second rotor disk 300 facing the stator base 110; positioning grooves are arranged at two sides of the stator base 110; so that the positioning bars 230 and 330 cooperate with the positioning slots, respectively, to form a precise positioning between the stator base and the rotor disk.

In addition, a plurality of permanent magnets and/or a plurality of magnetic steels can be arranged on the rotor disc in a positive-negative staggered mode along the circumferential direction.

Optionally, a matching hole 240 for passing the driving shaft through may be formed in the middle of the first rotor disc 200 along the axial direction; and a fitting hole 340 for passing the driving shaft therethrough is provided in the middle of the second rotor disk 300 in the axial direction, so that the driving shaft is disposed therethrough.

Additionally, although not shown, an embodiment of a passenger conveyor is provided. The passenger transportation device, such as an elevator, may comprise a synchronous motor as described in any of the above embodiments or a combination thereof, and therefore, has corresponding technical effects, and will not be described herein again.

The above examples mainly illustrate the motor stator assembly, synchronous motor and passenger transportation device of the present application. Although only a few embodiments of the present application have been described, those skilled in the art will appreciate that the present application may be embodied in many other forms without departing from the spirit or scope thereof. Accordingly, the present examples and embodiments are to be considered as illustrative and not restrictive, and various modifications and substitutions may be made therein without departing from the spirit and scope of the present application as defined in the appended claims.