CN213661330U

CN213661330U - Electric machine

Info

Publication number: CN213661330U
Application number: CN202022606754.5U
Authority: CN
Inventors: 张吉; 汪尧玉; 赵云峰; 沈雅丽; 张燕; 王志刚
Original assignee: Anhui Weineng Motor Co ltd
Current assignee: Anhui Weineng Motor Co ltd
Priority date: 2020-11-11
Filing date: 2020-11-11
Publication date: 2021-07-09
Anticipated expiration: 2030-11-11

Abstract

The utility model aims at providing a good and simple structure of radiating effect, low cost's motor, the rotor is fixed in the pivot, and the outside cover of rotor is equipped with the stator, and rotor, pivot, stator are coaxial to be arranged, and the stator respectively is provided with front end housing, rear end cap and constitutes the tang cooperation at ascending preceding, the back both ends of axial, through long screw rod fixed connection between front end housing, the rear end cap. In the scheme, the motor cancels the base, the stator is directly contacted with the air, the heat dissipation performance is greatly improved, and meanwhile, the motor has a compact structure and light weight and achieves the effects of material saving and consumption reduction.

Description

Electric machine

Technical Field

The utility model relates to the technical field of electric machines, the improvement of a concretely design motor structure.

Background

The good ventilation effect is one of important factors for improving the utilization rate of the motor, the electromagnetic load and the motor material, the traditional motor adopts a shell surface cooling mode, namely, heat generated in the motor is transmitted to the surface of the shell through air circulation in the motor, other heat conduction components such as a rotor iron core and the like and is taken away by other cooling media such as wind, oil, water and the like, and the motor has slow heat dissipation mode and poor heat dissipation effect. And therefore often improved by increasing the fan air volume or flow and proper process performance, but this again increases the overall cost of the motor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a good and simple structure of radiating effect, low cost's motor.

In order to realize the purpose, the utility model discloses a technical scheme be: a motor is characterized in that a rotor is fixed on a rotating shaft, a stator is sleeved outside the rotor, the rotating shaft and the stator are coaxially arranged, front and rear ends of the stator in the axial direction are respectively provided with a front end cover and a rear end cover to form a spigot fit, and the front end cover and the rear end cover are fixedly connected through a long screw.

In the scheme, the motor cancels the base, the stator is directly contacted with the air, the heat dissipation performance is greatly improved, and meanwhile, the motor has a compact structure and light weight and achieves the effects of material saving and consumption reduction.

Drawings

FIG. 1 is a schematic structural view of a motor;

fig. 2 is a sectional view of the stator.

Detailed Description

As shown in fig. 1 and 2, in the motor, a rotor 10 is fixed on a rotating shaft 20, a stator 30 is sleeved outside the rotor 10, the rotating shaft 20 and the stator 30 are coaxially arranged, a front end cover 40 and a rear end cover 50 are respectively arranged at the front end and the rear end of the stator 30 in the axial direction and form a spigot fit, and the front end cover 40 and the rear end cover 50 are fixedly connected through a long screw 60. The front end cover 40 and the rear end cover 50 are connected into a whole through the long screw rod 60, the front end cover 40 and the front end cover 50 are provided with the rabbets to position the stator 30, the motor is provided with a base, the stator is directly contacted with air, the heat dissipation performance is greatly improved, and meanwhile, the motor is compact in structure and light in weight, and the effects of material saving and consumption reduction are achieved.

Further, the outer walls of the front end cover 40 and the rear end cover 50 are a large-diameter section b and a small-diameter section a which are in a step shape, the inner wall of the large-diameter section b is provided with a step, the step abuts against the shoulder of the front end and the shoulder of the rear end of the stator 30 to form an axial limiting fit, the inner wall of the large-diameter section b abuts against the outer wall of the stator 30 to form a radial limiting fit, the outer wall of the large-diameter section b is outwardly provided with a flange c, the flange c is provided with a hole, the direction of the hole core is parallel to the axis core of the stator 30, and the long screw 60 sequentially penetrates through the two.

The holes on the rear end cover 50 are unthreaded holes penetrating through both sides of the flange c, the holes on the front end cover 40 are threaded holes penetrating through part of the flange c, and the long screws 60 are inserted from the unthreaded holes and are in threaded connection with the threaded holes. Thus, the long screw rod 60 is hidden from the front to the back, and the appearance is attractive and elegant.

In order to increase the heat dissipation area, the outer wall of the stator 30 is uniformly provided with heat dissipation fins 31 at intervals along the circumferential direction, the length direction of the heat dissipation fins 31 is parallel to the axial core direction of the stator 30, and the cross section of each heat dissipation fin 31 is in a tooth-shaped structure. The tooth-shaped heat dissipation is increased, the heat dissipation area is effectively increased, the temperature rise of the motor is reduced, and the efficiency of the motor is greatly improved.

Furthermore, the rear end cover 50 is provided with a through hole 51, and the winding 32 at the rear end of the stator 30 passes through the through hole 51.

In order to support the bearing, the middle parts of the front end cover 40 and the rear end cover 50 are provided with shaft holes for the rotating shaft 20 to pass through at the corresponding positions of the rotating shaft 20, a bearing seat is integrally formed on the inner side plate surface of the rear end cover 50, the tube core of the bearing seat is collinear with the hole core of the shaft hole, and the bearing 70 is arranged in the bearing seat and forms axial limiting and circumferential rotation matching.

Under the condition of ensuring enough mechanical strength and unchanged performance, compared with a power motor without a base, the volume of the motor is reduced by about 10-15 percent, so that the motor has more compact structure and light weight, and the purposes of saving materials and reducing consumption are achieved; the front end cover 40 and the rear end cover 50 of the motor are axially fastened by the long bolt 60 on the mounting structure, and the assembly structure is simple, reliable in connection and fast and convenient to assemble and disassemble.

Claims

1. The utility model provides a motor, rotor (10) are fixed on pivot (20), and the outside cover of rotor (10) is equipped with stator (30), and rotor (10), pivot (20), stator (30) are coaxial to be arranged, and stator (30) respectively are provided with front end housing (40), rear end housing (50) and constitute the tang cooperation, its characterized in that at the ascending preceding, the back both ends of axial: the front end cover (40) and the rear end cover (50) are fixedly connected through a long screw (60).

2. The electric machine of claim 1, wherein: the front end cover (40) and the rear end cover (50) are in a large-diameter section (b) and a small-diameter section (a) in a stepped shape on the outer wall, a step is arranged on the inner wall of the large-diameter section (b), the step is abutted to the stator (30) in front of the stator and the rear end shoulder to form axial limiting fit, the inner wall of the large-diameter section (b) is abutted to the outer wall of the stator (30) to form radial limiting fit, a flange (c) is outwards arranged on the outer wall of the large-diameter section (b), a hole is formed in the flange (c), the direction of the hole core is parallel to the axis core of the stator (30), and a long screw (60) sequentially penetrates through two holes to fixedly connect the front end cover.

3. The electric machine of claim 2, wherein: holes in the rear end cover (50) are unthreaded holes penetrating through two sides of the flange (c), holes in the front end cover (40) are threaded holes penetrating through part of the flange (c), and the long screw rods (60) are inserted from the unthreaded holes and are in threaded connection with the threaded holes.

4. The electric machine of claim 1, wherein: the outer wall of the stator (30) is uniformly provided with radiating fins (31) at intervals along the circumferential direction of the stator, the length direction of each radiating fin (31) is parallel to the axial core direction of the stator (30), and the cross section of each radiating fin (31) is of a tooth-shaped structure.

5. The electric machine according to claim 1 or 2, characterized in that: the rear end cover (50) is provided with a through hole (51), and the winding (32) at the rear end of the stator (30) penetrates through the through hole (51).

6. The electric machine according to claim 1 or 2, characterized in that: the middle parts of the front end cover (40) and the rear end cover (50) are provided with shaft holes for the rotating shaft (20) to pass through at the corresponding positions of the rotating shaft (20), a bearing seat is integrally formed on the inner side plate surface of the rear end cover (50), the tube core of the bearing seat is collinear with the hole core of the shaft hole, and a bearing (70) is arranged in the bearing seat and forms axial limiting and circumferential rotation matching.