WO2022067930A1 - 一种电机及其成型绕组端部固定结构 - Google Patents

一种电机及其成型绕组端部固定结构 Download PDF

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Publication number
WO2022067930A1
WO2022067930A1 PCT/CN2020/124284 CN2020124284W WO2022067930A1 WO 2022067930 A1 WO2022067930 A1 WO 2022067930A1 CN 2020124284 W CN2020124284 W CN 2020124284W WO 2022067930 A1 WO2022067930 A1 WO 2022067930A1
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WIPO (PCT)
Prior art keywords
fixing structure
end fixing
stator winding
winding end
winding
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PCT/CN2020/124284
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English (en)
French (fr)
Inventor
周黎民
范存利
黄松海
汤剑
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中车株洲电机有限公司
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Application filed by 中车株洲电机有限公司 filed Critical 中车株洲电机有限公司
Publication of WO2022067930A1 publication Critical patent/WO2022067930A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto

Definitions

  • the present invention relates to the technical field of electric motors, in particular to a forming winding end fixing structure.
  • the invention also relates to a motor.
  • the main components of the motor include stator, rotor, stator winding, rotor winding, collector ring, etc.
  • the end of the motor winding is the weakest part of the mechanical strength of the motor winding, and the strengthening of the mechanical strength of the winding end makes the winding end stronger. Resist the destructive force caused by motor vibration, electromagnetic force, ventilation, etc.
  • the mechanical reliability of the stator winding ends is fixed and the prevention of damage caused by double-frequency electromagnetic vibration has become the top priority.
  • the traction motor is generally installed inside the wheel hub. Due to the limitation of installation space, the axial dimension of the motor is strictly required, resulting in insufficient axial space at the end of the winding.
  • the installation method in the traditional traction motor is to arrange a slender collector ring on the axial centerline of the winding end, and then bind it together with the lead wire of the coil nose through a binding tape.
  • the collector ring cannot be arranged at the axial center of the winding end, and the winding end cannot be combined according to the conventional method.
  • the lead wire of the stator winding needs to bear the weight of the collector ring, and the motor inevitably has a large vibration impact during operation. If the strength of the end of the stator winding is insufficient, it is easy to damage the stator The insulation performance of the lead wires of the winding is damaged, and even the lead wires are broken.
  • the purpose of the present invention is to provide a forming winding end fixing structure, which can improve the fixing stability and structural strength of the stator winding end, and at the same time reduce the occupation of the axial space in the motor.
  • Another object of the present invention is to provide a motor.
  • the present invention provides a forming winding end fixing structure, which includes a pressure ring installed in the casing and pressed against the end face of the stator iron core, and a pressure ring installed in the casing and distributed on the stator winding end.
  • the collector ring assembly in the outer area, the hard end ferrule that is fastened on the outer side wall of the stator winding in the circumferential direction, and a number of fixing rings connected between the pressure ring and the collector ring assembly and distributed along the circumferential direction
  • the intermediate connecting piece is a binding tape or an elastic cord.
  • the slip ring assembly includes two layers of guide rings distributed in the radial direction and an insulating layer distributed between the two layers of the guide rings.
  • each layer of the guide rings is distributed with two in the axial direction, and an insulating backing plate is filled between the end faces of the two adjacent guide rings in the axial direction.
  • an insulating end plate is attached to the outer end surface of the guide ring of each layer.
  • the insulating layer, the insulating backing plate and the insulating end plate are axially penetrated and connected into one body by connecting fasteners.
  • both ends of the fixed connection plate are bent into connection parts, and the connection part at one end is detachably connected to the surface of the pressure ring, and the connection part at the other end is connected to the connection fastener.
  • a plurality of reinforcing ribs for improving the structural strength of the fixed connecting plate are arranged between the connecting parts at both ends.
  • it also includes a protective layer coated on the end surface of the stator winding for protecting the insulating layer.
  • the present invention further provides a motor, comprising a casing and a shaped winding end fixing structure disposed in the casing, wherein the shaped winding end fixing structure is specifically the shaped winding end fixing structure described in any one of the above structure.
  • the forming winding end fixing structure provided by the present invention mainly includes a pressure ring, a collector ring assembly, a hard end hoop, a fixed connecting plate and an intermediate connecting piece.
  • the pressure ring is installed in the casing of the motor and pressed against the end face of the stator iron core.
  • the slip ring assemblies are installed in the housing and mainly function as the slip rings in the prior art. The difference is that the slip ring assemblies are distributed as a whole in the outer region of the end of the stator winding (instead of the axial center region).
  • the hard end ferrule is fastened on the outer side wall of the stator winding (which is a shaped winding with a fixed shape) in the circumferential direction, and the entire stator winding is clamped and fixed.
  • the fixed connection plate is connected between the pressure ring and the collector ring assembly, plays a role of connection and supports the collector ring assembly, and connects the collector ring assembly and the pressure ring into one body.
  • a plurality of fixed connection plates are arranged and distributed along the circumferential direction, so as to improve the connection stability and support stability of the collector ring assembly.
  • the intermediate connecting piece is connected between the fixed connecting plate and the hard end hoop, and is mainly used to connect the fixed connecting plate and the hard end hoop into one body.
  • stator winding since the stator winding is fastened by the hard end hoop, it is connected to the fixed connection plate through the intermediate connecting piece, and the fixed connection plate connects the collector ring assembly and the pressure ring into one, so the pressure ring, the stator winding and the pressure ring are integrated.
  • the collector ring components are connected as a whole, which means that the end structure of the entire stator winding is installed on the end face of the stator core, so that the fixing stability and structural strength of the stator winding end can be improved.
  • the collector ring components are distributed in the outer area of the end of the stator winding, which effectively reduces the occupation of the axial space in the motor, and no longer bears the weight of the collector ring components after the winding leads are connected, but the fixed connection plate. Therefore, damage to the insulation performance of the lead wires of the stator winding can be avoided, and the lead wires can be prevented from being broken due to shock and vibration.
  • FIG. 1 is a schematic diagram of the overall structure of a specific embodiment provided by the present invention.
  • FIG. 2 is a schematic diagram of a specific structure of the slip ring assembly shown in FIG. 1 .
  • FIG. 3 is a schematic diagram of the specific structure of the fixed connection plate shown in FIG. 1 .
  • Shell-1 pressure ring-2, stator winding-3, collector ring assembly-4, hard end hoop-5, fixed connecting plate-6, intermediate connecting piece-7, connecting fastener-8;
  • FIG. 1 is a schematic diagram of the overall structure of a specific embodiment provided by the present invention.
  • the forming winding end fixing structure mainly includes a pressure ring 2 , a collector ring assembly 4 , a hard end hoop 5 , a fixed connecting plate 6 and an intermediate connecting piece 7 .
  • the pressure ring 2 is installed in the casing 1 of the motor and pressed against the end face of the stator iron core.
  • the pressure ring 2 can be selected from a steel plate with a certain thickness.
  • the pressure ring 2 is annular, and a through hole is formed in the center.
  • the collector ring assembly 4 is installed in the housing 1 and mainly plays the role of the collector ring in the prior art (current collector and current diversion), the difference is that the collector ring assembly 4 is distributed on the outer side of the end of the stator winding 3 as a whole region (rather than the axial center region).
  • the collector ring assembly 4 is annular as a whole, and has a short axial length and an obvious radial length, which is larger than the inner diameter of the pressure ring 2, and the overall shape is relatively flat, which is suitable for limited axial space and radial length. Application scenarios with large space.
  • the hard end ferrule 5 is tightly hooped on the outer side wall of the stator winding 3 (which is a shaped winding with a fixed shape) in the circumferential direction, and the entire stator winding 3 is clamped and fixed.
  • the hard end ferrule 5 is annular, and its inner wall is in close contact with the outer wall of the stator winding 3 .
  • the hard end hoop 5 has elasticity and can perform elastic radial contraction, and in a natural state, the inner diameter of the hard end hoop 5 is slightly smaller than the formed The outer diameter of the stator winding 3 (eg, 90%), so that the elastic force can improve the tightness of the stator winding 3 .
  • the fixed connection plate 6 is connected between the pressure ring 2 and the collector ring assembly 4 , plays a role of connection and supports the collector ring assembly 4 , and connects the collector ring assembly 4 and the pressure ring 2 into one body.
  • a plurality of fixed connection plates 6 are provided and distributed along the circumferential direction, so as to improve the connection stability and support stability of the slip ring assembly 4 .
  • each fixed connection plate 6 can be evenly distributed in the circumferential direction along the outer edge of the pressure ring 2, and its specific distribution quantity is not fixed, so that a plurality of fixed connection plates 6 can connect and support the slip ring assembly 4 at the same time.
  • the intermediate connecting piece 7 is connected between the fixed connecting plate 6 and the hard end hoop 5 , and is mainly used for connecting the fixed connecting plate 6 and the hard end hoop 5 into one body.
  • the slip ring assemblies 4 are distributed in the outer area of the ends of the stator windings 3, which effectively reduces the occupation of the axial space in the motor, and the slip ring assemblies are no longer supported by the winding leads and the back.
  • the weight of the stator winding 3 is supported by the fixed connection plate 6, so it can also avoid damage to the insulation performance of the lead wires of the stator winding 3, and prevent the lead wires from being broken due to shock and vibration.
  • each fixed connection plate 6 in order to facilitate the connection and installation of each fixed connection plate 6 on the pressure ring 2, in this embodiment, a number of threads are provided along the circumferential direction in the outer edge region of the end face of the pressure ring 2 Holes, so that one end of each fixed connection plate 6 can be threadedly connected with the pressure ring 2 through fasteners such as bolts, screws, etc., thereby facilitating installation and disassembly.
  • fasteners such as bolts, screws, etc.
  • the connection between the fixed connection plate 6 and the pressure ring 2 is not limited to screw connection, and other fixed connections such as detachable connection or welding formed by rivets, clips, etc. are also used.
  • the intermediate connecting piece 7 in order to facilitate the connection between the fixed connecting plate 6 and the hard end hoop 5 , in this embodiment, can be specifically a binding tape.
  • the binding tape has elasticity, it is suitable for narrow spaces, has high toughness and is easy to operate.
  • the intermediate connector 7 may also be in the form of an elastic cord or the like.
  • FIG. 2 is a schematic diagram of a specific structure of the slip ring assembly 4 shown in FIG. 1 .
  • the slip ring assembly 4 mainly includes a current guide ring 41 , an insulating layer 42 , an insulating backing plate 43 and an insulating end plate 44 .
  • four guide rings 41 are provided at the same time, and the distribution form of inner and outer layers is formed in the radial direction, and at the same time, it is also divided into two rows in the axial direction.
  • the distribution structure of the guide rings 41 in this embodiment can greatly reduce the axial length and reduce the impact on the inner shaft of the motor.
  • the radial space in the motor is rationally used, and the space utilization rate is improved.
  • an insulating layer 42 is arranged between the two layers of guide rings 41 in the radial direction, and in the axial direction, the two rows of guide rings 41
  • Insulating backing plates 43 are filled between the adjacent end faces of the two rows of guide rings 41
  • insulating end plates 44 are attached to the left and right end faces of the two rows of guide rings 41 .
  • the insulating end plates 44 at both ends or the insulating backing plate 43 at the middle position can also be connected to the adjacent insulating layers 42 to form an integral structure.
  • the insulating layer 42 , the insulating backing plate 43 and the insulating end plate 44 can all be made of glass cloth plates.
  • the insulating layer 42 , the insulating backing plate 43 and the insulating end plate 44 are all at the center of the circle. Through holes are provided, and at the same time, the connecting fasteners 8 are used for successively penetrating and fixing, and the two ends of the connecting fasteners 8 are fastened by nuts.
  • FIG. 3 is a schematic diagram of the specific structure of the fixed connection plate 6 shown in FIG. 1 .
  • both ends of the fixed connecting plate 6 are bent to form connecting portions 61 , which are concave or U-shaped as a whole.
  • one end of the connecting portion 61 can be connected to the end face of the pressure ring 2 through fasteners such as bolts, while the other end connecting portion 61 can be extended to be close to the surface of the insulating end plate 44 and be fastened through the connection.
  • Pieces 8 are fixed through.
  • the middle part of the fixed connecting plate 6 is hollow and has a groove-like hollow, the structural strength will inevitably decrease.
  • the A number of reinforcing ribs 62 are arranged between the connecting parts 61, so that the connecting parts 61 at both ends are pulled together by the connecting action of the reinforcing ribs 62, and a support structure is formed at the connecting parts 61 at both ends, so as to improve the resistance to the collector ring.
  • the support stability of the assembly 4 can also reduce the impact of shock and vibration on the fixed connecting plate 6 .
  • both ends of each reinforcing rib 62 are welded to the inner surface of the connecting portion 61 at both ends, respectively.
  • a protective layer is coated on the end surface of the stator winding 3, specifically, the protective layer may be a polyurethane layer or the like.
  • the lead wires of the stator winding 3 can also be bent into the gaps between the winding noses, so as to use the function of the winding noses to block the sand and dust impurities in the airflow generated during the operation of the motor. impact, to prevent the end insulation layer 42 of the stator winding 3 from being worn.
  • This embodiment also provides a motor, which mainly includes a housing 1 and a formed winding end fixing structure disposed in the housing 1, wherein the specific content of the formed winding end fixing structure is the same as the above-mentioned related content, and is not described here. Repeat.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

一种成型绕组端部固定结构，包括安装于壳体内并压紧在定子铁芯端面上的压圈、安装于所述壳体内并分布于定子绕组端部的外侧区域的集电环组件、沿周向紧箍在所述定子绕组外侧壁上的硬端箍、连接于所述压圈与所述集电环组件之间并沿周向分布的若干个固定连接板，以及将所述固定连接板与所述硬端箍连接为一体的中间连接件。如此，压圈、定子绕组和集电环组件连接成一个整体，相当于整个定子绕组的端部结构均安装在定子铁芯的端面上，从而能够提高定子绕组端部的固定稳定性和结构强度，相比于现有技术，集电环组件分布在定子绕组的端部外侧区域，有效减小了对电机内轴向空间的占用。本发明还公开一种电机，其有益效果如上所述。

Description

一种电机及其成型绕组端部固定结构
本申请要求于2020年9月30日提交中国专利局、申请号为202011063761.3、发明名称为“一种电机及其成型绕组端部固定结构”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及电机技术领域，特别涉及一种成型绕组端部固定结构。本发明还涉及一种电机。
背景技术
随着高效节能电机的推广，电机的设计逐渐向小型化、重量轻、低成本的方向发展。
电机的主要组成部件包括定子、转子、定子绕组、转子绕组、集电环等，其中，电机绕组端部是电动机绕组机械强度最薄弱的部分，绕组端部机械强度的加强，使绕组端部增强抵抗电动机振动、电磁力、通风等引起的破坏力。而定子绕组端部在机械上的可靠性固定和防止两倍频电磁振动造成的危害成为重中之重。
以电动轮自卸车的牵引电机为例，该牵引电机一般安装在轮毂内部，由于安装空间的限制，对电机的轴向尺寸要求较为严格，导致绕组端部轴向空间不足。传统的牵引电机中的安装方法，是将细长型的集电环布置在绕组端部的轴向中心线上，然后通过绑扎带与线圈鼻部的引线绑扎成一体。但由于轴向空间的限制，无法将集电环布置在绕组端部轴心位置，并且无法按照常规方法进行绕组端部并头。同时，在现有技术中，定子绕组的引线并头需要承受集电环的重量，并且电机在运行过程中不可避免地存在较大的振动冲击，若定子绕组的端部强度不足，容易对定子绕组的引线绝缘性能造成损害，甚至出现引线断裂等问题。
因此，如何提高定子绕组端部的固定稳定性和结构强度，同时减小对电机内轴向空间的占用，是本领域技术人员面临的技术问题。
发明内容
本发明的目的是提供一种成型绕组端部固定结构，能够提高定子绕组 端部的固定稳定性和结构强度，同时减小对电机内轴向空间的占用。本发明的另一目的是提供一种电机。
为解决上述技术问题，本发明提供一种成型绕组端部固定结构，包括安装于壳体内并压紧在定子铁芯端面上的压圈、安装于所述壳体内并分布于定子绕组端部的外侧区域的集电环组件、沿周向紧箍在所述定子绕组外侧壁上的硬端箍、连接于所述压圈与所述集电环组件之间并沿周向分布的若干个固定连接板，以及将所述固定连接板与所述硬端箍连接为一体的中间连接件。
优选地，所述中间连接件为绑扎带或弹性绳。
优选地，所述集电环组件包括沿径向分布为两层的导流环和分布于两层所述导流环之间的绝缘层。
优选地，各层所述导流环均沿轴向分布有2个，且轴向上相邻的两个所述导流环的端面之间填充有绝缘垫板。
优选地，各层所述导流环的外端面上贴附设置有绝缘端板。
优选地，所述绝缘层、所述绝缘垫板与所述绝缘端板通过连接紧固件沿轴向贯穿并连成一体。
优选地，所述固定连接板的两端弯折成连接部，且其中一端所述连接部与所述压圈的表面可拆卸连接，另一端所述连接部与所述连接紧固件相连。
优选地，两端所述连接部之间设置有若干根用于提高所述固定连接板的结构强度的加强筋。
优选地，还包括涂覆于所述定子绕组的端部表面、用于保护绝缘层的防护层。
本发明还提供一种电机，包括壳体和设置于所述壳体内的成型绕组端部固定结构，其中，所述成型绕组端部固定结构具体为上述任一项所述的成型绕组端部固定结构。
本发明所提供的成型绕组端部固定结构，主要包括压圈、集电环组件、硬端箍、固定连接板和中间连接件。其中，压圈安装在电机的壳体内，并压紧在定子铁芯的端面上。集电环组件安装在壳体内，主要起到现有技术 中集电环的作用，不同的是，集电环组件整体分布在定子绕组的端部外侧区域(而非轴向中心区域)。硬端箍沿周向紧箍在定子绕组(为形状固定的成型绕组)的外侧壁上，将定子绕组整个夹紧固定。固定连接板连接在压圈与集电环组件之间，起到连接作用和支承集电环组件的作用，将集电环组件与压圈连接成一体。固定连接板设置有多个，并且沿周向方向分布，以提高对集电环组件的连接稳定性和支承稳定性。中间连接件连接在固定连接板与硬端箍之间，主要用于将固定连接板与硬端箍连接成一体。如此，由于硬端箍紧固住定子绕组，又通过中间连接件与固定连接板连接成一体，而固定连接板又将集电环组件与压圈连接成一体，因此使得压圈、定子绕组和集电环组件连接成一个整体，相当于整个定子绕组的端部结构均安装在定子铁芯的端面上，从而能够提高定子绕组端部的固定稳定性和结构强度，相比于现有技术，集电环组件分布在定子绕组的端部外侧区域，有效减小了对电机内轴向空间的占用，并且不再由绕组引线并头后承受集电环组件的重量，而是由固定连接板进行支承，因此还能够避免对定子绕组的引线的绝缘性能造成损害，防止引线受到冲击振动而断裂。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据提供的附图获得其他的附图。
图1为本发明所提供的一种具体实施方式的整体结构示意图。
图2为图1中所示的集电环组件的具体结构示意图。
图3为图1中所示的固定连接板的具体结构示意图。
其中，图1—图3中：
壳体—1，压圈—2，定子绕组—3，集电环组件—4，硬端箍—5，固定连接板—6，中间连接件—7，连接紧固件—8；
导流环—41，绝缘层—42，绝缘垫板—43，绝缘端板—44，连接部— 61，加强筋—62。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
请参考图1，图1为本发明所提供的一种具体实施方式的整体结构示意图。
在本发明所提供的一种具体实施方式中，成型绕组端部固定结构主要包括压圈2、集电环组件4、硬端箍5、固定连接板6和中间连接件7。
其中，压圈2安装在电机的壳体1内，并压紧在定子铁芯的端面上。一般的，压圈2可选用一定厚度的钢板。为避免对定子绕组3造成干涉，压圈2呈环状，中心开设有通孔。
集电环组件4安装在壳体1内，主要起到现有技术中集电环的作用(集流导流)，不同的是，集电环组件4整体分布在定子绕组3的端部外侧区域(而非轴向中心区域)。一般的，集电环组件4整体呈环状，且轴向长度较短，径向长度尺寸较明显，且大于压圈2的内径，整体形状较扁，适用于轴向空间受限而径向空间较大的应用场景。
硬端箍5沿周向紧箍在定子绕组3(为形状固定的成型绕组)的外侧壁上，将定子绕组3整个夹紧固定。一般的，该硬端箍5呈环状，并且其内壁与定子绕组3的外壁紧贴。为提高硬端箍5对定子绕组3的紧箍程度，优选地，该硬端箍5具有弹性，可进行弹性径向收缩，并且在自然状态下，该硬端箍5的内径略小于成型的定子绕组3的外径(如90％)，从而能够弹性力提高对定子绕组3的紧箍程度。
固定连接板6连接在压圈2与集电环组件4之间，起到连接作用和支承集电环组件4的作用，将集电环组件4与压圈2连接成一体。固定连接板6设置有多个，并且沿周向方向分布，以提高对集电环组件4的连接稳定性和支承稳定性。一般的，各个固定连接板6可沿着压圈2的外缘在周 向方向上均匀分布，其具体分布数量不定，从而使多个固定连接板6同时连接和支承集电环组件4。
中间连接件7连接在固定连接板6与硬端箍5之间，主要用于将固定连接板6与硬端箍5连接成一体。
如此，由于硬端箍5紧固住定子绕组3，又通过中间连接件7与固定连接板6连接成一体，而固定连接板6又将集电环组件4与压圈2连接成一体，因此使得压圈2、定子绕组3和集电环组件4连接成一个整体，相当于整个定子绕组3的端部结构均安装在定子铁芯的端面上，从而能够提高定子绕组3端部的固定稳定性和结构强度。相比于现有技术，集电环组件4分布在定子绕组3的端部外侧区域，有效减小了对电机内轴向空间的占用，并且不再由绕组引线并头后承受集电环组件4的重量，而是由固定连接板6进行支承，因此还能够避免对定子绕组3的引线的绝缘性能造成损害，防止引线受到冲击振动而断裂。
在关于压圈2的一种优选实施例中，为方便各个固定连接板6在压圈2上的连接安装，本实施例在压圈2的端面外缘区域沿周向方向开设有若干个螺纹孔，从而可使各个固定连接板6的一端通过螺栓、螺钉等紧固件与压圈2形成螺纹连接，进而便于安装与拆卸。当然，固定连接板6与压圈2之间的连接方式并不仅限于螺纹连接，其余比如通过铆钉、卡接等形成可拆卸连接或者焊接等固定连接也同样采用。
在关于中间连接件7的一种优选实施例中，为方便固定连接板6与硬端箍5之间的连接，本实施例中，中间连接件7具体可采用绑扎带。如此，由于绑扎带具有弹性，适应于狭窄空间，且韧性较高、操作方便。当然，中间连接件7还可采用弹性绳等形式。
如图2所示，图2为图1中所示的集电环组件4的具体结构示意图。
在关于集电环组件4的一种优选实施例中，该集电环组件4主要包括导流环41、绝缘层42、绝缘垫板43和绝缘端板44。其中，导流环41同时设置有4个，且在径向方向上形成内外两层的分布形式，同时在轴向方向上也分为两列。如此设置，相比于现有技术中4个导流环41均呈轴向方向分布的结构，本实施例中的导流环41的分布结构能够大幅缩减轴向 长度，减小对电机内轴向空间的占用，同时合理利用了电机内的径向空间，提高了空间利用率。
同时，为保证各个导流环41的绝缘性能，本实施例在径向方向上的两层导流环41之间设置了绝缘层42，并且在轴向方向上，于两列导流环41的相邻端面之间填充有绝缘垫板43，同时于两列导流环41的左右端面上贴附设置有绝缘端板44。此外，两端位置的绝缘端板44或者中间位置的绝缘垫板43还可与相邻的绝缘层42连接成一体，形成一体成型结构。一般的，绝缘层42、绝缘垫板43和绝缘端板44可均采用玻璃布板。
进一步的，为将各个导流环41与绝缘层42、绝缘垫板43和绝缘端板44连接成整体，本实施例在绝缘层42、绝缘垫板43和绝缘端板44的圆心区域处均开设有通孔，同时通过连接紧固件8进行依次贯穿固定，并在连接紧固件8的两端通过螺母紧固。
如图3所示，图3为图1中所示的固定连接板6的具体结构示意图。
另外，为提高固定连接板6与集电环组件4之间的连接稳定性，本实施例中，固定连接板6的两端部分弯折形成连接部61，整体呈凹型或U型。如前所述，其中一端连接部61可通过螺栓等紧固件与压圈2的端面相连，而另一端连接部61可延伸至紧贴在绝缘端板44的表面上，并通过连接紧固件8进行贯穿固定。
进一步的，考虑到固定连接板6的中间部分中空，具有槽状镂空，为此不可避免地导致结构强度下降，为提高固定连接板6的结构强度，本实施例在固定连接板6的两端连接部61之间设置了若干根加强筋62，以通过各根加强筋62的连接作用，将两端连接部61互相拉紧，并在两端连接部61形成支撑结构，提高对集电环组件4的支承稳定性，同时也能降低冲击振动对固定连接板6的影响。一般的，各根加强筋62的两端分别焊接在两端连接部61的内表面上。
另外，为防止定子绕组3的绝缘层42在电机运行过程中受到损害，本实施例在定子绕组3的端部表面上涂覆有一层防护层，具体的，该防护层可为聚氨酯层等。
基于同样的考虑，还可将定子绕组3的引线并头后弯折到绕组鼻部之 间的缝隙中，从而利用绕组鼻部的作用阻挡在电机运行过程中产生的气流中的沙尘杂质的冲击，防止定子绕组3的端部绝缘层42受到磨损。
本实施例还提供一种电机，主要包括壳体1和设置于壳体1内的成型绕组端部固定结构，其中，该成型绕组端部固定结构的具体内容与上述相关内容相同，此处不再赘述。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (10)

  1. 一种成型绕组端部固定结构，其特征在于，包括安装于壳体(1)内并压紧在定子铁芯端面上的压圈(2)、安装于所述壳体(1)内并分布于定子绕组(3)端部的外侧区域的集电环组件(4)、沿周向紧箍在所述定子绕组(3)外侧壁上的硬端箍(5)、连接于所述压圈(2)与所述集电环组件(4)之间并沿周向分布的若干个固定连接板(6)，以及将所述固定连接板(6)与所述硬端箍(5)连接为一体的中间连接件(7)。
  2. 根据权利要求1所述的成型绕组端部固定结构，其特征在于，所述中间连接件(7)为绑扎带或弹性绳。
  3. 根据权利要求1所述的成型绕组端部固定结构，其特征在于，所述集电环组件(4)包括沿径向分布为两层的导流环(41)和分布于两层所述导流环(41)之间的绝缘层(42)。
  4. 根据权利要求3所述的成型绕组端部固定结构，其特征在于，各层所述导流环(41)均沿轴向分布有2个，且轴向上相邻的两个所述导流环(41)的端面之间填充有绝缘垫板(43)。
  5. 根据权利要求4所述的成型绕组端部固定结构，其特征在于，各层所述导流环(41)的外端面上贴附设置有绝缘端板(44)。
  6. 根据权利要求5所述的成型绕组端部固定结构，其特征在于，所述绝缘层(42)、所述绝缘垫板(43)与所述绝缘端板(44)通过连接紧固件(8)沿轴向贯穿并连成一体。
  7. 根据权利要求6所述的成型绕组端部固定结构，其特征在于，所述固定连接板(6)的两端弯折成连接部(61)，且其中一端所述连接部(61)与所述压圈(2)的表面可拆卸连接，另一端所述连接部(61)与所述连接紧固件(8)相连。
  8. 根据权利要求7所述的成型绕组端部固定结构，其特征在于，两端所述连接部(61)之间设置有若干根用于提高所述固定连接板(6)的结构强度的加强筋(62)。
  9. 根据权利要求1-8任一项所述的成型绕组端部固定结构，其特征在于，还包括涂覆于所述定子绕组(3)的端部表面、用于保护绝缘层的防护层。
  10. 一种电机，包括壳体(1)和设置于所述壳体(1)内的成型绕组端部固定结构，其特征在于，所述成型绕组端部固定结构具体为权利要求1-9任一项所述的成型绕组端部固定结构。
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