CN213685203U

CN213685203U - Motor bearing lubricating structure

Info

Publication number: CN213685203U
Application number: CN202022270615.XU
Authority: CN
Inventors: 唐轩; 黄家煜; 官辉
Original assignee: Hepu Power Co ltd
Current assignee: Hepu Power Co ltd
Priority date: 2020-10-13
Filing date: 2020-10-13
Publication date: 2021-07-13
Anticipated expiration: 2030-10-13

Abstract

A motor bearing lubricating structure comprises a motor power output shaft and a gearbox power input shaft, wherein the power output shaft is connected with the gearbox power input shaft, the front end and the rear end of the gearbox power input shaft are connected into a gearbox through bearings, and a bearing is arranged between the motor power output shaft and the gearbox. Compared with the prior art, the utility model, it is lubricated to keep enough lubricating oil in the bearing to have, reduces the bearing wearing and tearing and forms abnormal sound, dry grinding and generate heat the advantage of risk such as damage.

Description

Motor bearing lubricating structure

Technical Field

The utility model relates to the technical field of motors.

Background

Under the high-speed development of new energy automobiles, the market has higher and higher requirements on new energy motors. The bearing is an important component of a new energy motor and plays an important role in the motor. The bearing used on the motor load end of the new energy automobile has higher requirements, and the bearing has long service life and high rotating speed, and requires low noise, low friction and low vibration, so that the improvement of the lubrication condition of the bearing is a good choice.

However, the conventional motor bearing is lubricated by lubricating oil carried by the bearing at the time of shipment. Under the conditions of high speed, heavy load or high temperature, the lubricating oil carried by the bearing can be lost in the work until the bearing fails. The self-contained lubricating mode is easy to wear and generate abnormal sound in long-term work, and is easy to dry grind and generate heat to be damaged.

Disclosure of Invention

The utility model aims at providing a keep in the bearing enough lubricated oil lubricated, reduce the bearing wearing and tearing and form abnormal sound, dry grinding and generate heat the motor bearing lubricating structure of risk such as damage.

The utility model discloses a realize like this: the gearbox power input shaft is connected with the power output shaft of the motor, the front end and the rear end of the power input shaft of the gearbox are connected into the gearbox through bearings, and the bearing is arranged between the power output shaft of the motor and the gearbox.

Because the motor bearing is arranged in the cavity of the gearbox, when the gearbox runs, splashed lubricating oil driven by the gear can enter the motor bearing, so that the motor bearing can continuously obtain the lubrication of the lubricating oil, and the aims of reducing risks such as abnormal sound caused by bearing abrasion and heating damage caused by dry grinding are fulfilled.

Compared with the prior art, the utility model, its beneficial effect is:

the bearing of this scheme passes through gear oil lubrication, and the bearing wearing and tearing that significantly reduces form risk such as abnormal sound, dry grinding heating damage.

The bearing lubricating structure of this scheme can last the lubricated effect of bearing for a long time, has reduced the wearing and tearing condition of bearing, has improved mechanical transmission's reliability.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The invention will now be described in further detail with reference to the accompanying drawings and examples:

as shown in figure 1, comprises a motor power output shaft 2 with an external spline 1 at the end 201, a gearbox power input shaft 4 with a shaft connecting hole 3 at the front end, an internal spline 5 on the hole wall of the connecting hole 3, the power output shaft 2 inserted into the connecting hole 3 of the gearbox power input shaft 4, the external spline 1 on the end of the motor power output shaft 2 embedded into the internal spline 5 in the connecting hole 3, the front end and the rear end of the gearbox power input shaft 4 connected into a gearbox 7 through a bearing 6, a bearing 8 arranged between the motor power output shaft 2 and the gearbox 7, the motor power output shaft sealing device is characterized in that the inner side end of a bearing 8 arranged between a motor power output shaft 2 and a gearbox 7 is positioned in a cavity of the gearbox 7, and an oil seal 9 is arranged between the motor power output shaft 2 and the gearbox 7 at the outer side of the bearing 8 arranged between the motor power output shaft 2 and the gearbox 7 (an oil seal lip 901 of the oil seal 9 leans against the motor power output shaft 2).

The diameter of a motor power output shaft through hole 701 of the gearbox 7 is slightly larger than that of the motor power output shaft 2, a circular ring-shaped elastic ring 10 with an arc-shaped section is arranged on the side wall of a bearing cavity 702 on the outer side of a bearing 8 arranged between the motor power output shaft 2 and the gearbox 7, and an outer ring 801 of the bearing 8 arranged between the motor power output shaft 2 and the gearbox 7 leans against the circular ring-shaped elastic ring 10. Because the diameter of the oil seal 9 is far smaller than the diameter of the bearing 8 arranged between the motor power output shaft 2 and the gearbox 7, the diameter of the hole where the oil seal 9 is arranged is smaller than the diameter of the bearing cavity 702 where the bearing 8 arranged between the motor power output shaft 2 and the gearbox 7 is arranged, so that the side wall of the bearing cavity 702 is easy to lean against the inner ring 802 of the bearing 8 arranged between the motor power output shaft 2 and the gearbox 7, the bearing 8 arranged between the motor power output shaft 2 and the gearbox 7 can not play the role, and the problem is solved by adopting the annular elastic ring 10.

A counter bore 703 is arranged at the position, corresponding to the power output shaft 2 of the motor, of the outer side of the gearbox 8, and an oil seal 9 is arranged at the counter bore 703. By adopting the counter bore 703, the diameter of the motor power output shaft through hole of the gearbox 7 can be closer to the diameter of the motor power output shaft 2, so that the lubricating oil in the gearbox 7 is less prone to seeping into the motor power output shaft through hole of the gearbox 7, and meanwhile, the oil seal 10 is limited in the counter bore 703.

A steel sleeve 11 is arranged between a bearing 8 and a bearing cavity 702 arranged between the motor power output shaft 2 and the gearbox 7, a hole elastic retainer ring 12 is arranged at the end part of the steel sleeve 11 facing the cavity of the gearbox 7, an inner flange 13 is arranged at the end part of the steel sleeve 11 facing away from the cavity of the gearbox 7, and a circular elastic ring 10 is arranged between the inner flange 13 and the bearing 8 arranged between the motor power output shaft 2 and the gearbox 7. The steel sleeve 11 is adopted, so that the manufacturing and the assembly are convenient.

Claims

1. A motor bearing lubricating structure comprises a motor power output shaft and a gearbox power input shaft, wherein the power output shaft is connected with the gearbox power input shaft, the front end and the rear end of the gearbox power input shaft are connected into a gearbox through bearings, and a bearing is arranged between the motor power output shaft and the gearbox.

2. A motor bearing lubrication structure according to claim 1, wherein a diameter of a motor power output shaft through hole of the transmission case is slightly larger than that of the motor power output shaft, a circular ring-shaped elastic ring with an arc-shaped section is provided on a side wall of a bearing cavity outside a bearing provided between the motor power output shaft and the transmission case, and an outer ring of the bearing provided between the motor power output shaft and the transmission case abuts against the circular ring-shaped elastic ring.

3. The motor bearing lubrication structure according to claim 2, wherein a counterbore is provided at a position outside the transmission case corresponding to the power output shaft of the motor, and the oil seal is provided at the counterbore.

4. A motor bearing lubrication structure according to claim 1, 2 or 3, characterised in that a steel bushing is provided between the bearing provided between the motor power take-off shaft and the gearbox and the bearing cavity, a circlip for holes is provided at the end of the steel bushing facing the gearbox cavity, an inner flange is provided at the end of the steel bushing facing away from the gearbox cavity, and a circular circlip is provided between the inner flange and the bearing provided between the motor power take-off shaft and the gearbox.