CN212162978U

CN212162978U - Outer spigot motor shell

Info

Publication number: CN212162978U
Application number: CN202020050385.3U
Authority: CN
Inventors: 许海峰; 顾雪政; 刘磊磊; 张远佳; 杨帆; 马翔; 蔡丹玲; 奚守荣
Original assignee: Wangao Nantong Motor Manufacturing Co ltd
Current assignee: Wangao Nantong Motor Manufacturing Co ltd
Priority date: 2020-01-10
Filing date: 2020-01-10
Publication date: 2020-12-15
Anticipated expiration: 2030-01-10

Abstract

The utility model discloses an outer tang motor casing, including casing, end cover, stator, rotor, pivot. The shell is connected with the end cover through a spigot, the shell is an outer spigot, the end cover is an inner spigot, a circular surface of the outer spigot of the shell and a circular surface of the inner spigot of the end cover are assembled through clearance fit or transition fit, and a plane of the outer spigot of the shell and a plane of the inner spigot of the end cover are fastened through bolts to achieve axial tight fit. The external structure of casing tang makes things convenient for car processing and assembly, improves production efficiency, reduction in production cost is favorable to guaranteeing motor axial and radial assembly precision simultaneously to guarantee the concentricity of stator and rotor and the axiality of front and back end cover, reduce the vibration of motor.

Description

Outer spigot motor shell

Technical Field

The utility model relates to the technical field of motors, specifically be an outer tang motor casing.

Background

Three-phase asynchronous machine as motor. The rotating speed of the rotor of the three-phase asynchronous motor is lower than that of a rotating magnetic field, and the rotor winding generates electromotive force and current due to relative motion between the rotor winding and the magnetic field and interacts with the magnetic field to generate electromagnetic torque so as to realize energy conversion. Compared with single-phase asynchronous motor, the three-phase asynchronous motor has good running performance and can save various materials. According to the difference of rotor structure, the three-phase asynchronous motor can be divided into cage type and winding type. The asynchronous motor of the cage rotor has simple structure, reliable operation, light weight and low price, is widely applied and has the main defect of difficult speed regulation. The rotor and stator of a wound three-phase asynchronous motor are also provided with three-phase windings and are connected with external varistors through slip rings and brushes. Adjusting the varistor resistance may improve the starting performance of the motor and adjust the speed of the motor.

In order to ensure the concentricity of the stator and the rotor and the coaxiality of the two end covers, the motor shell is connected with the end covers through the spigot to ensure the assembly precision. The seam allowance of the existing motor shell is arranged on the inner wall of the shell, and the seam allowance of the end cover matched with the seam allowance is arranged on the outer wall of the shell. The existing motor shell and the end cover are only fixed by bolts, and if the bolts are loosened in the running process of the motor, the connection between the shell and the end cover is loosened, so that the problems of high bearing temperature, large motor vibration and the like can be caused.

For the above reasons, there is a need to improve the existing connection structure of the casing and the end cover, which has the problems of difficult assembly, high processing cost, etc.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an outer tang motor casing to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an outer tang motor casing, includes outer tang casing, the outer tang disc of casing, the tang setting of outer tang casing is at casing end outer wall and be annular step structure, the assembly is assembled through clearance fit or transition fit to the outer tang disc of casing and end cover inner tang disc.

Preferably, the shell outer spigot plane and the end cover inner spigot plane are further included, and the shell outer spigot plane and the end cover inner spigot plane are fastened through bolts to achieve axial tight fit.

Preferably, the diameter of the circular surface of the outer spigot of the casing is D1, and according to a three-phase asynchronous motor with the center height of 104mm-620mm and the center height of 63mm-200mm of different bases, the tolerance of D1 is h6, the tolerance of D1 is K7, and the three-phase asynchronous motor with the center height of 225mm-355 mm.

Preferably, the diameter D2 of the inner spigot circular surface of the end cover is 104mm-620mm according to different machine base center heights, and the tolerance is H7.

Preferably, the circular surface of the outer spigot of the shell of the motor and the circular surface of the inner spigot of the end cover are in clearance fit, and the circular surface of the outer spigot of the shell of the motor and the circular surface of the inner spigot of the end cover are in transition fit, wherein the circular surface of the outer spigot of the shell of the motor and the circular surface of the inner spigot of the end cover are in clearance fit, and the circular surface of the inner spigot of the shell.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses structural design is novel, and the external structure of casing tang makes things convenient for car processing and assembly, improves production efficiency, and reduction in production cost is favorable to guaranteeing motor axial and radial assembly precision simultaneously to guarantee the concentricity of stator and rotor and the axiality of front and back end cover, reduce the vibration of motor.

Drawings

Fig. 1 is a schematic structural diagram of a three-phase asynchronous motor of an outer spigot motor shell.

Fig. 2 is a partially enlarged view of portion i in fig. 1.

Fig. 3 is a schematic structural diagram of a housing of the male end motor.

Fig. 4 is a partial enlarged view of a portion ii in fig. 3.

Fig. 5 is a schematic structural view of the female end cap.

Fig. 6 is a partially enlarged view of a portion iii in fig. 5.

In the figure: 1. an outer spigot shell; 2. an inner spigot end cover; 3. a stator; 4. a rotor; 5. a rotating shaft; 6. And a bearing.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: the utility model provides an outer tang motor casing, includes outer tang casing 1, casing outer tang disc 7, the tang setting of outer tang casing 1 is at casing end outer wall and be annular stair structure, the assembly is assembled through clearance fit or transition fit to tang disc 9 in casing outer tang disc 7 and the end cover. The radial assembly precision is ensured, so that the concentricity of the stator and the rotor is ensured, and the vibration of the motor is effectively reduced.

The utility model discloses in, tang plane 10 in tang plane 8 and the end cover outside the casing, tang plane 10 reaches the axial through the bolt-up and closely cooperates in tang plane 8 and the end cover outside the casing. The axial assembly precision is ensured, and the coaxiality of the front end cover and the rear end cover is ensured.

In the utility model, the 7 diameter D1 of the circular surface of the outer spigot of the machine shell is 104mm-620mm of the center height of the machine base and 63mm-200mm of the center height of the three-phase asynchronous motor, the tolerance of D1 is h6, the tolerance of D1 is K7; the diameter D2 of the end cover inner spigot circular surface 9 is 104mm-620mm according to different machine base center heights, and the tolerance is H7.

The utility model discloses in, the three-phase asynchronous motor of 63mm-200mm of central height, motor housing outer spigot disc 7 with spigot disc 9 is clearance fit in the end cover, and the three-phase asynchronous motor of 225mm-355mm of central height then is transition fit between the two. The utility model discloses according to different frame center height, tang degree of depth L2 is 1mm-1.5mm darker than the degree of depth L1 of the outer tang of casing in the end cover.

The utility model also discloses a three-phase asynchronous motor, which comprises an outer spigot casing 1, an inner spigot end cover 2, a stator 3, a rotor 4, a rotating shaft 5 and a bearing 6; the stator 3 is sleeved on the outer spigot shell 1 in a hot mode, a positioning pin is fixed, and the rotor 4 is arranged in the stator 3; the bearing 6 is mounted in the female end cover 2 and supports the rotating shaft 5 and the rotor 4.

To sum up, the utility model discloses structural design is novel, and the external structure of casing tang makes things convenient for car processing and assembly, improves production efficiency, and reduction in production cost is favorable to guaranteeing motor axial and radial assembly precision simultaneously to guarantee the concentricity of stator and rotor and the axiality of front and back end cover, reduce the vibration of motor.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an outer tang motor casing, includes outer tang casing (1), casing outer tang disc (7), its characterized in that: the spigot of the outer spigot casing (1) is arranged on the outer wall of the casing end and is of an annular step structure, and the outer spigot round surface (7) of the casing and the inner spigot round surface (9) of the end cover are assembled through clearance fit or transition fit.

2. A male end motor housing as claimed in claim 1, wherein: the motor shell structure is characterized by further comprising a shell outer spigot plane (8) and an end cover inner spigot plane (10), wherein the shell outer spigot plane (8) and the end cover inner spigot plane (10) are fastened through bolts to achieve axial tight fit.

3. A male end motor housing as claimed in claim 1, wherein: the diameter D1 of the circular surface (7) of the outer spigot of the machine shell is 104mm-620mm of the center height and 63mm-200mm of the center height according to different machine bases, the tolerance D1 is h6, the tolerance D1 is K7 for the three-phase asynchronous motor with the center height of 225mm-355 mm.

4. A male end motor housing as claimed in claim 1, wherein: the diameter D2 of the end cover inner spigot circular surface (9) is 104mm-620mm according to different machine base center heights, and the tolerance is H7.

5. A male end motor housing as claimed in claim 1, wherein: the three-phase asynchronous motor with the center height of 63mm-200mm is characterized in that an outer spigot circular surface (7) of a motor shell and an inner spigot circular surface (9) of an end cover are in clearance fit, and the three-phase asynchronous motor with the center height of 225mm-355mm is in transition fit.