阅读说明：本技术 湿绕组电机定子槽楔限位结构 (Wet winding motor stator slot wedge limit structure ) 是由 王勇 杨凤君 张尧 吕向平 李函霖 于 2020-06-15 设计创作，主要内容包括：本发明设计了一种湿绕组电机定子槽楔限位结构,定子铁心1安装在机座2内,每个定子铁心槽8内壁放置一层绝缘纸7,在绝缘纸7空间内放置绕组线圈3,每个定子槽楔4填充绕组线圈3与定子铁心槽8槽口间空余位置,尼龙挡圈6嵌入定子齿压板5的凹形槽9内。本发明阻挡绕组线圈在槽内位移,防止磨损绕组线圈3绝缘层,易于安装,防止电机启动运行时水流对定子槽楔4冲击致使槽楔脱落。本发明避免脱落物进入导轴承间隙,尼龙挡圈安装方便且空间布局合理,提高了电机运行的可靠性。(The invention designs a stator slot wedge limiting structure of a wet winding motor, wherein a stator core 1 is arranged in a base 2, a layer of insulating paper 7 is placed on the inner wall of each stator core slot 8, a winding coil 3 is placed in the space of the insulating paper 7, each stator slot wedge 4 fills the vacant position between the winding coil 3 and the notch of the stator core slot 8, and a nylon retainer ring 6 is embedded in a concave slot 9 of a stator tooth pressing plate 5. The invention prevents the winding coil from displacing in the slot, prevents the insulating layer of the winding coil 3 from being worn, is easy to install, and prevents the slot wedge from falling off caused by the impact of water flow on the stator slot wedge 4 when the motor is started. The invention prevents falling objects from entering the gap of the guide bearing, the nylon retainer ring is convenient to install and reasonable in spatial layout, and the running reliability of the motor is improved.)

1. The utility model provides a wet winding motor stator slot wedge limit structure, characterized by: the stator core (1) is installed in the base (2), a layer of insulating paper (7) is placed on the inner wall of each stator core slot (8), a winding coil (3) is placed in the space of the insulating paper (7), each stator slot wedge (4) fills the vacant position between the winding coil (3) and the notch of the stator core slot (8), and the nylon retainer ring (6) is embedded into the concave slot (9) of the stator tooth pressing plate (5).

2. The wet winding motor stator slot wedge limiting structure of claim 1, wherein: the stator core (1) and the base (2) are in interference fit, the stator core slots (8) are trapezoidal closed chutes, the winding coils (3) are provided with irradiation cross-linked polyethylene insulation nylon sheaths, the thickness of the stator slot wedges (4) is matched with the residual space of each stator core slot (8) after threading, and the slot wedges (4) are made of oak.

The technical field is as follows:

the invention relates to a stator slot wedge limiting structure of a wet winding motor.

Background art:

the common motor winding is a formed coil or an enameled wire winding structure, the integrity in the slot is good after the winding is finished, the slot wedge is mostly made of an insulating plate material, and the whole body is dipped into paint to be integrated after the winding is finished and bound. The stator and the rotor of the wet winding motor are both immersed in water, the electromagnetic wire insulation material of the motor is auxiliary irradiation crosslinked polyethylene, the electromagnetic wire is wound from the stator core slot back and forth, a wet winding coil is formed at last, and the end part is formed and bound and fixed. Because the wet winding coil is a through winding structure, electromagnetic wire conductors in a motor slot are difficult to avoid crossing, an ordinary slot wedge is difficult to fill up the vacant space after threading in each iron core slot, because the wet winding motor is an upright motor, if only the slot wedge is placed in the motor iron core slot, the slot wedge is easy to fall off due to the self gravity of the slot wedge and the impact force of water flow in the running process of the motor, fallen objects enter a guide bearing gap, and the motor causes the damage of a motor bearing due to the increase of mechanical loss, thereby influencing the service life of the motor.

The invention content is as follows:

the invention aims to provide a wet winding motor stator slot wedge limiting structure, wherein a nylon check ring is used for preventing the self gravity of a slot wedge and the impact force of water flow from falling off in the motor operation process, so that falling objects are prevented from entering a guide bearing gap, the nylon check ring is convenient to install and reasonable in spatial layout, and the motor operation reliability is improved. The invention adopts the following technical scheme: the utility model provides a wet winding motor stator slot wedge limit structure, stator core (1) is installed in frame (2), and one deck insulated paper (7) are placed to every stator core groove (8) inner wall, places winding coil (3) in insulated paper (7) space, and the vacant position between winding coil (3) and stator core groove (8) notch is filled in every stator slot wedge (4), and nylon retaining ring (6) imbeds in concave groove (9) of stator tooth clamp plate (5).

The stator core (1) and the base (2) are in interference fit, the stator core slots (8) are trapezoidal closed chutes, the winding coils (3) are provided with irradiation cross-linked polyethylene insulation nylon sheaths, the thickness of the stator slot wedges (4) is matched with the residual space of each stator core slot (8) after threading, and the slot wedges (4) are made of oak.

The working principle of the invention is as follows:

the invention relates to a stator slot wedge limiting structure of a wet winding motor, wherein a stator iron core (1) is arranged in a machine base (2), the stator iron core (1) and the machine base (2) are in interference fit, and the iron core is arranged after the machine base (2) is heated. As shown in figure 1, a layer of insulating paper (7) is placed on the inner wall of a stator core slot (8) of a wet winding motor, a winding coil (3) is wound back and forth from notches at two ends of a stator core after the winding coil is ready, after the winding is completely threaded, a stator slot wedge (4) is filled in the vacant position between the winding coil (3) and the notch of the stator core slot (8), a nylon retainer ring (6) is embedded into a concave slot (9) of a stator tooth pressing plate (5), the nylon retainer ring (6) at one end is embedded into the concave slot, and the nylon retainer ring (6) is assembled at the other end.

The invention has the advantages that:

the stator slot wedge is made of oak materials, can absorb water to expand in water to fill the remaining space in the stator core slot (8), blocks a winding coil from displacing in the slot, prevents an insulating layer of the winding coil (3) from being abraded, is elastic and easy to install, fixes and limits two ends of the stator slot wedge (4), prevents the stator slot wedge (4) from shifting downwards due to the self gravity of the stator slot wedge when the stator slot wedge is static, and prevents water flow from impacting the stator slot wedge (4) to cause the slot wedge to fall off when a motor is started. The invention prevents falling objects from entering the gap of the guide bearing, the nylon retainer ring is convenient to install and reasonable in spatial layout, and the running reliability of the motor is improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a diagram of the location of the slot wedge and the winding coil.

FIG. 3 is a diagram showing the position of a concave groove of a stator tooth pressing plate with a nylon retainer ring embedded therein

Fig. 4 is a diagram of nylon retainer ring versus stator slot wedge restriction.

Detailed Description

As shown in fig. 1, a stator slot wedge limiting structure of a wet winding motor is characterized in that a stator core 1 is installed in a base 2, a layer of insulation paper 7 is placed on the inner wall of each stator core slot 8, a winding coil 3 is placed in the space of the insulation paper 7, each stator slot wedge 4 fills the vacant position between the winding coil 3 and the notch of the stator core slot 8, and a nylon retainer ring 6 is embedded in a concave slot 9 of a stator tooth pressing plate 5.

As shown in fig. 2, the stator core 1 and the base 2 are in interference fit, the stator core slots 8 are trapezoidal closed chutes, the winding coil 3 is provided with an irradiation cross-linked polyethylene insulation nylon sheath, the thickness of the stator slot wedges 4 is matched with the residual space of each stator core slot 8 after threading, and the slot wedges 4 are made of oak.

As shown in figure 3, the nylon retainer ring 6 is embedded into the concave groove 9 of the stator tooth pressure plate 5, the nylon retainer ring 6 at one end is embedded into the concave groove, and the nylon retainer ring 6 is assembled at the other end.

As shown in fig. 4, the nylon retainer ring 6 is made of plastic, has elasticity and is easy to install, fixes and limits the two ends of the stator slot wedge 4, prevents the stator slot wedge 4 from moving downwards due to the gravity when the stator slot wedge is static, and prevents the slot wedge from falling off due to the impact of water flow on the stator slot wedge 4 when the motor is started.