CN210093024U

CN210093024U - Oil-cooled motor

Info

Publication number: CN210093024U
Application number: CN201921319554.2U
Authority: CN
Inventors: 孙显旺; 陈翾; 席荣盛; 谢培利; 冯光; 熊文平
Original assignee: KINETEK DESHENG MOTOR (FOSHAN SHUNDE) CO Ltd
Current assignee: KINETEK DESHENG MOTOR (FOSHAN SHUNDE) CO Ltd
Priority date: 2019-08-15
Filing date: 2019-08-15
Publication date: 2020-02-18
Anticipated expiration: 2029-08-15

Abstract

The utility model belongs to the technical field of the motor and specifically relates to a novel oil-cooled motor is related to. The motor comprises a shell, a front end cover, a rear end cover, a stator core, a stator coil, a rotating shaft, a front bearing and a rear bearing, wherein the stator is arranged in the shell, the front end cover and the rear end cover are arranged at two ends of the shell, the front bearing is arranged in the front end cover, the rear bearing is arranged in the rear end cover, the rotating shaft is arranged in the front bearing and the rear bearing in a penetrating manner, a snake-shaped groove is formed in the inner surface of the shell, an oil inlet and an oil collecting groove are formed in the bottom of the shell, the oil inlet is not communicated with the oil collecting groove, the oil inlet is communicated with the snake-shaped groove, the outer wall of the stator core is in close contact with the inner surface. The utility model has the advantages of simple and reasonable design, it is good to stator core, stator coil, front and back bearing cooling effect, and cooling area is big, and the coolant oil is retrieved, because cooling area is big, so lubricated also fine, improves product life.

Description

Oil-cooled motor

Technical Field

The utility model belongs to the technical field of the motor and specifically relates to a novel oil-cooled motor is related to.

Background

In the design and manufacturing process of the motor, the temperature rise of the motor during operation is always a difficult problem to design and manufacture workers of the motor. For this reason, the cooling method of the motor is also diversified. Nowadays, oil cooling is a novel cooling method for a plurality of motors. However, oil-cooled motors also face a number of technical difficulties, such as: the improper design of the oil circuit leads to poor heat dissipation performance of the motor, causes the local temperature of the motor to be overhigh, further causes the motor to be burnt and the like; the bearing is not lubricated properly, so that the service life of the bearing is greatly reduced when the bearing works under the high-strength working condition environment.

Disclosure of Invention

An object of the utility model is to provide a can abundant cooling, lubricated oil-cooled motor.

The purpose of the utility model is realized like this.

The utility model provides an oil-cooled motor, includes casing, front end housing, rear end cap, stator core, stator coil, pivot, front bearing, rear bearing, and the stator is established in the casing, and front end housing and rear end cap are established at the casing both ends, and the front bearing is established at the front end housing internally, and the rear bearing is established at the rear end cap internally, and the pivot is worn to establish in front bearing and rear bearing, the casing internal surface is equipped with the snake-shaped groove, and the bottom of the case is equipped with oil inlet and oil collecting tank, and the oil inlet does not communicate with each other with the oil collecting tank, and oil inlet intercommunication snake-shaped groove, stator core outer wall and casing internal surface in close contact with to make the snake-shaped groove form seal, the coolant oil that.

The inner surface of the shell corresponding to at least one end part of the two end parts of the stator coil is provided with an annular groove, the annular groove is positioned on the periphery of the stator coil and communicated with the snake-shaped groove, a steel ring is arranged between the annular groove and the end part of the stator coil, and the steel ring is provided with an oil passing hole.

The technical proposal can be further perfected as follows.

The bottom of the steel ring is provided with a notch which is positioned above the oil collecting tank, and the diameter of the steel ring is equivalent to the inner diameter of the end part of the casing.

And the cooling oil entering from the oil inlet enters the snake-shaped groove and then is divided into a left path and a right path which rise to the top of the shell along the snake-shaped groove.

And a front end cover oil way communicated with the annular groove or the return ring groove is arranged between the front bearing and the annular groove or the return ring groove.

And a rear end cover oil way communicated with the annular groove or the return ring groove is arranged between the rear bearing and the annular groove or the return ring groove.

The utility model has the advantages of simple and reasonable design, it is good to stator core, stator coil, front and back bearing cooling effect, and cooling area is big, and the coolant oil is retrieved, because cooling area is big, so lubricated also fine, improves product life.

Drawings

Fig. 1 is an axial sectional view of the present embodiment, mainly showing the internal structure of the front end cover.

Fig. 2 is an axial sectional view of the present embodiment, mainly showing the internal structure of the rear end cover.

Fig. 3 is a perspective view of the present embodiment.

Fig. 4 is another angular perspective view of the present embodiment.

Fig. 5 is a perspective view of the housing of the present embodiment.

Fig. 6 is an axial sectional view of the casing of the present embodiment.

Fig. 7 is a perspective view of the stator mounted to the housing of the present embodiment.

Fig. 8 is a rear axial sectional view of the housing of the present embodiment with the stator mounted.

Fig. 9 is a perspective view of the steel ring of the present embodiment.

Fig. 10 is a perspective view of the rotor and the rotating shaft of the present embodiment.

Detailed Description

The present invention will be described more clearly and completely with reference to the accompanying drawings and examples.

The embodiment, with reference to the drawings, and with reference to fig. 1, 2, and 10, an oil-cooled motor includes a casing 1, a front end cover 2, a rear end cover 3, a stator 4, a stator core 5, a stator coil 6, a rotating shaft 7, a front bearing 8, a rear bearing 9, a rotor 30, the stator 4 is disposed in the casing 1, the front end cover 2 and the rear end cover 3 are disposed at two ends of the casing 1, the front bearing 8 is disposed in the front end cover 2, the rear bearing 9 is disposed in the rear end cover 3, the rotor 30 is disposed on the rotating shaft 7, and the rotating shaft 7 is disposed in the front bearing 8 and the rear bearing 9 in a penetrating manner.

Referring to fig. 5 and 6, a serpentine groove 10 is formed in the inner surface of the casing 1, an oil inlet 11 and an oil collecting groove 12 are formed in the bottom of the casing 1, the oil inlet 11 is not communicated with the oil collecting groove 12, the oil inlet 11 is communicated with the serpentine groove 10, the outer wall of the stator core 5 is in close contact with the inner surface of the casing 1, so that the serpentine groove 10 is closed, and cooling oil entering from the oil inlet enters the serpentine groove and then is divided into a left path and a right path to rise to the top of the casing along the.

Referring to fig. 1 to 9, a front annular groove 13 is formed in the inner surface of the housing 1 corresponding to the front end of the stator coil 6, the front annular groove 13 is located on the outer periphery of the front end of the stator coil 6, the front annular groove 13 is communicated with the serpentine groove 10, a front steel ring 14 is arranged between the front annular groove 13 and the front end of the stator coil 6, and the front steel ring 14 is provided with an oil passing hole 15. The bottom of the front steel ring 14 is provided with a gap 16, the gap 16 is positioned above the oil collecting tank 12, the diameter of the front steel ring 14 is equal to the inner diameter of the front end part of the shell, so that the front steel ring 14 is fixed in the shell, and the gap 16 is positioned above the oil collecting tank, so that the positioning is convenient, and the cooling oil can conveniently flow back to the oil collecting tank.

The inner surface of the shell corresponding to the rear end part of the stator coil 6 is provided with a rear annular groove 17, the rear annular groove 17 is positioned on the periphery of the rear end part of the stator coil 6, the rear annular groove 17 is communicated with the snake-shaped groove 10, a rear steel ring 18 is arranged between the rear annular groove 17 and the rear end part of the stator coil, and the rear steel ring 18 is provided with an oil passing hole 19. The bottom of the rear steel ring 18 is provided with a gap 20, the gap 20 is positioned above the oil collecting tank, and the diameter of the rear steel ring is equal to the inner diameter of the rear end part of the machine shell, so that the rear steel ring 18 is fixed in the machine shell.

And front end cover oil ways 21 for communicating the front bearing 8 with the front annular groove 13 are arranged in the front end cover body 2 and the shell 1.

And a rear end cover oil way 22 for communicating the rear bearing 9 with the rear annular groove 17 is arranged in the rear end cover body 3 and the shell 1.

If the end of the housing is not provided with a front annular groove or a rear annular groove, the front end cover oil path 21 and the rear end cover oil path 22 are also in direct communication with the corresponding serpentine grooves.

When the cooling oil pump is used, the cooling oil is injected into the shell from the oil inlet by the oil pump, the cooling oil enters the shell and then rises along the snake-shaped grooves on the inner wall of the shell in two ways, and after reaching the top end of the shell, the stator core can be cooled in the process, the two snake-shaped grooves are respectively communicated with the front annular groove and the rear annular groove, the two snake-shaped grooves are respectively sprayed to two ends of the stator coil through the oil passing holes in the front steel ring and the rear steel ring, the stator coil is cooled, the oil after being cooled flows into the oil return groove, the cooling oil entering the front annular groove and the rear annular groove can respectively and correspondingly enter the front bearing and the rear bearing, the cooling oil after cooling the front.

Claims

1. The utility model provides an oil-cooled motor, includes casing, front end housing, rear end cap, stator core, stator coil, pivot, fore bearing, rear bearing, and the stator is established in the casing, and front end housing and rear end cap are established at the casing both ends, and the fore bearing is established at the front end housing internally, and the rear bearing is established at the rear end housing internally, and its characterized in that is worn to establish in front bearing and rear bearing in the pivot: the inner surface of the shell is provided with a snake-shaped groove, the bottom of the shell is provided with an oil inlet and an oil collecting groove, the oil inlet is not communicated with the oil collecting groove, the oil inlet is communicated with the snake-shaped groove, the outer wall of the stator core is tightly contacted with the inner surface of the shell to seal the snake-shaped groove, and cooling oil entering from the oil inlet enters the snake-shaped groove and rises to the top of the shell along the snake-shaped groove;

2. The oil-cooled motor of claim 1, wherein: the bottom of the steel ring is provided with a notch which is positioned above the oil collecting tank, and the diameter of the steel ring is equivalent to the inner diameter of the end part of the casing.

3. The oil-cooled motor of claim 1, wherein: and the cooling oil entering from the oil inlet enters the snake-shaped groove and then is divided into a left path and a right path which rise to the top of the shell along the snake-shaped groove.

4. The oil-cooled motor of claim 1, wherein: and a front end cover oil way communicated with the annular groove or the return ring groove is arranged between the front bearing and the annular groove or the return ring groove.

5. The oil-cooled motor of claim 1, wherein: and a rear end cover oil way communicated with the annular groove or the return ring groove is arranged between the rear bearing and the annular groove or the return ring groove.