CN212868379U

CN212868379U - Low-noise electric automobile speed reducer

Info

Publication number: CN212868379U
Application number: CN202020992301.8U
Authority: CN
Inventors: 马寅虎; 于伟; 徐聪; 尹龙飞; 王昆明
Original assignee: Hebei De'ao Technology Co ltd
Current assignee: Hebei De'ao Technology Co ltd
Priority date: 2020-06-03
Filing date: 2020-06-03
Publication date: 2021-04-02
Anticipated expiration: 2030-06-03

Abstract

The utility model discloses a low noise electric automobile reduction gear, including reduction gear shell, first bearing, amortization chamber, amortization cover shell and second bearing, first bearing is installed to the one end of the inside bottom of reduction gear shell, and the other end of the inside bottom of reduction gear shell installs the second bearing, the internally mounted of first bearing has the drive shaft, the drive shaft passes reduction gear shell and extends to reduction gear shell's outside, and the driven gear is installed in the outside of drive shaft. The utility model discloses be provided with the amortization chamber inside the retarder housing to evenly be provided with the amortization recess and inhale the sound cotton in the inside in amortization chamber, the inside noise that produces of retarder housing gets into the amortization intracavity, then inside homodisperse to the amortization recess, the amortization recess can prevent that the noise from diffusing to the outside, inhales the effect that the cotton cooperation amortization recess of sound used and has good noise absorption, is favorable to the noise reduction.

Description

Low-noise electric automobile speed reducer

Technical Field

The utility model relates to a reduction gear technical field specifically is a low noise electric automobile reduction gear.

Background

The electric automobile uses electric energy as a power source, the automobile runs by the driving of a motor, belongs to a new energy automobile, the influence on the environment is smaller than that of the traditional automobile, so the development prospect is widely seen, an electric automobile reducer is an independent part consisting of gear transmission, worm transmission and gear-worm transmission which are sealed in a rigid shell, the electric automobile reducer is commonly used as a speed reduction transmission device between a motor and a working machine, when the existing electric automobile reducer is used, the parts such as gears in the reducer can generate noise during the operation, the reducer isolates the noise through a shell, the noise isolation effect on the noise is poor, the noise generated by the reducer is transmitted to the interior and the exterior of a carriage during the running process of the electric automobile, the noise in the carriage is larger, so that drivers and passengers are uncomfortable, meanwhile, the noise of the existing electric automobile reducer is concentrated and emitted from the interior of the reducer, electric automobile causes noise pollution to the external world easily at the in-process of traveling, consequently, the research and development of novel low noise electric automobile reduction gear receives more and more researcher's attention.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low noise electric automobile reduction gear 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 a low noise electric automobile reduction gear, includes reduction gear shell, first bearing, amortization chamber, amortization cover shell and second bearing, first bearing is installed to the one end of the inside bottom of reduction gear shell, and the other end of the inside bottom of reduction gear shell installs the second bearing, the internally mounted of first bearing has the drive shaft, the drive shaft passes reduction gear shell and extends to reduction gear shell's outside, and installs driven gear in the outside of drive shaft, the internally mounted of second bearing has motor shaft, motor shaft passes reduction gear shell and extends to reduction gear shell's outside, and motor shaft's the outside install with driven gear engaged with driving gear, the amortization cover shell is installed in reduction gear shell's the outside, and the top and the bottom at the inside both ends of reduction gear shell all are provided with the amortization chamber.

Preferably, the one end that the reduction gear shell was kept away from in amortization chamber all evenly is provided with the amortization recess, and the inboard of amortization recess all installs and inhales the sound cotton.

Preferably, the top of amortization cover shell evenly is provided with first bloop, and the bottom of amortization cover shell evenly is provided with the second bloop.

Preferably, the bottom of the outer side of the speed reducer shell is uniformly provided with first radiating fins.

Preferably, the second heat dissipation fins are uniformly installed on the top of the outer side of the speed reducer shell.

Preferably, the inside of amortization cover shell is provided with the radiating groove, and the internally mounted of radiating groove has the dust screen.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the low-noise electric automobile speed reducer is provided with a silencing casing, and a first silencing hole and a second silencing hole are uniformly formed in the silencing casing, so that the silencing casing can play a certain isolation effect on noise, the arrangement of the first silencing hole and the second silencing hole enables the noise to be dispersed, the concentrated emission of the noise is avoided, and the vibration influence on the device caused by kinetic energy in the noise can be reduced;

2. the low-noise electric automobile reducer is characterized in that a silencing cavity is formed in a reducer shell, silencing grooves and sound-absorbing cotton are uniformly formed in the silencing cavity, noise generated in the reducer shell enters the silencing cavity and then is uniformly dispersed into the silencing grooves, the silencing grooves can prevent the noise from diffusing to the outside, and the sound-absorbing cotton is matched with the silencing grooves to achieve a good noise-absorbing effect, so that the noise is reduced;

3. this low noise electric automobile reduction gear is provided with the radiating groove on the amortization cover shell to evenly install first heat radiation fin cooperation in the outside of reduction gear shell and use, when having guaranteed the low noise, ensured to install holistic radiating effect.

Drawings

Fig. 1 is a schematic front sectional view of the present invention;

fig. 2 is a schematic front view of the present invention;

fig. 3 is a schematic view of a partial structure of the present invention.

In the figure: 1. a reducer housing; 2. a first bearing; 3. a sound-deadening chamber; 4. a silencing groove; 5. a first heat radiation fin; 6. a heat sink; 7. a driven gear; 8. a drive shaft; 9. a motor shaft; 10. a first muffling hole; 11. a silencing casing; 12. a driving gear; 13. a dust screen; 14. a second bearing; 15. a second muffling hole; 16. a second heat radiation fin; 17. and (5) sound absorption cotton.

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. 1-3, the present invention provides an embodiment: a low-noise electric automobile speed reducer comprises a speed reducer shell 1, a first bearing 2, a silencing cavity 3, a silencing casing 11 and a second bearing 14, wherein the first bearing 2 is arranged at one end of the bottom inside the speed reducer shell 1, and the other end of the inner bottom of the reducer casing 1 is provided with a second bearing 14, the inner part of the first bearing 2 is provided with a driving shaft 8, the driving shaft 8 penetrates through the reducer casing 1 and extends to the outer part of the reducer casing 1, and the driven gear 7 is arranged on the outer side of the driving shaft 8, the motor rotating shaft 9 is arranged in the second bearing 14, the motor rotating shaft 9 penetrates through the reducer shell 1 and extends to the outside of the reducer shell 1, and the outside of motor shaft 9 is installed with driving gear 12 with driven gear 7 meshing, and the outside of reduction gear shell 1 is installed the amortization cover shell 11, and the top and the bottom at the inside both ends of reduction gear shell 1 all are provided with amortization chamber 3.

In this implementation:

further, the one end that reduction gear housing 1 was kept away from in amortization chamber 3 all evenly is provided with amortization recess 4, and the inboard of amortization recess 4 all installs and inhales sound cotton 17, and the noise of 1 inside production of reduction gear housing gets into in the amortization chamber 3, then homodisperse is to amortization recess 4 insidely, and amortization recess 4 can prevent that the noise from diffusing to the outside, inhales the effect that sound cotton 17 cooperation amortization recess 4 used and had good noise absorption, is favorable to the noise reduction.

Further, the top of amortization cover shell 11 evenly is provided with first bloop 10, and the bottom of amortization cover shell 11 evenly is provided with second bloop 15, and amortization cover shell 11 can play certain isolated effect to the noise, and the setting up of first bloop 10 and second bloop 15 makes the noise dispersion, avoids the noise to concentrate and sends, still can reduce the vibrations influence that kinetic energy in the noise caused the device.

Furthermore, the bottom of the outer side of the reducer casing 1 is uniformly provided with first heat dissipation fins 5, external air enters the interior of the silencing case 11 through the heat dissipation grooves 6, the first heat dissipation fins 5 exchange heat with the external air, and the overall heat dissipation efficiency of the reducer casing 1 can be improved through the first heat dissipation fins 5.

Furthermore, the second heat dissipation fins 16 are uniformly installed on the top of the outer side of the reducer casing 1, which is beneficial to improving the heat dissipation efficiency of the device.

Further, the inside of the silencing casing 11 is provided with a heat dissipation groove 6, and the inside of the heat dissipation groove 6 is provided with a dust screen 13, so that the outside air can enter the inside of the silencing casing 11 through the heat dissipation groove 6.

The working principle is as follows: when the noise reduction device is used, the motor rotating shaft 9 drives the driving gear 12 to rotate, the driving gear 12 drives the driving shaft 8 to rotate through the driven gear 7, the driving shaft 8 can drive the electric automobile to move, the diameter of the driving gear 12 is smaller than that of the driven gear 7, the rotating speed of the driven gear 7 is smaller than that of the driving gear 12, and therefore the effect of reducing speed is achieved, the driven gear 7 and the driving gear 12 generate noise in the working process, the noise enters the noise reduction cavity 3 and is uniformly dispersed into the noise reduction grooves 4, the noise reduction grooves 4 can prevent the noise from diffusing to the outside, the sound absorption cotton 17 has good noise absorption effect when being matched with the noise reduction grooves 4, noise reduction is facilitated, the noise transmitted from the inside of the reducer shell 1 enters the inside of the noise reduction shell 11, the noise reduction shell 11 can achieve certain isolation effect on the noise, and the first noise reduction hole 10 and the second noise reduction hole 15 enable, the noise is prevented from being emitted in a centralized mode, the vibration influence of kinetic energy in the noise on the device can be reduced, the first radiating fins 5 can conduct heat inside the speed reducer shell 1, outside air enters the silencing case shell 11 through the radiating grooves 6, the first radiating fins 5 exchange heat with the outside air, and the overall radiating efficiency of the speed reducer shell 1 can be improved through the first radiating fins 5.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a low noise electric automobile reduction gear, includes reduction gear shell (1), first bearing (2), amortization chamber (3), amortization cover shell (11) and second bearing (14), its characterized in that: one end of the bottom in the speed reducer shell (1) is provided with a first bearing (2), and the other end of the bottom in the reducer shell (1) is provided with a second bearing (14), a driving shaft (8) is arranged inside the first bearing (2), the driving shaft (8) penetrates through the speed reducer shell (1) and extends to the outside of the speed reducer shell (1), a driven gear (7) is arranged on the outer side of the driving shaft (8), a motor rotating shaft (9) is arranged in the second bearing (14), the motor rotating shaft (9) penetrates through the reducer shell (1) and extends to the outside of the reducer shell (1), and a driving gear (12) meshed with the driven gear (7) is arranged on the outer side of the motor rotating shaft (9), a silencing shell (11) is arranged on the outer side of the speed reducer shell (1), and the top and the bottom of the two ends in the reducer shell (1) are both provided with silencing cavities (3).

2. The reducer for low-noise electric vehicles according to claim 1, wherein: the one end that the reduction gear shell (1) was kept away from in amortization chamber (3) all evenly is provided with amortization recess (4), and the inboard of amortization recess (4) all installs and inhales sound cotton (17).

3. The reducer for low-noise electric vehicles according to claim 1, wherein: the top of amortization cover shell (11) evenly is provided with first bloop (10), and the bottom of amortization cover shell (11) evenly is provided with second bloop (15).

4. The reducer for low-noise electric vehicles according to claim 1, wherein: the bottom of the outer side of the speed reducer shell (1) is uniformly provided with first radiating fins (5).

5. The reducer for low-noise electric vehicles according to claim 1, wherein: and second radiating fins (16) are uniformly arranged on the top of the outer side of the speed reducer shell (1).

6. The reducer for low-noise electric vehicles according to claim 1, wherein: the noise reduction casing (11) is provided with a heat dissipation groove (6) inside, and the dust screen (13) is installed inside the heat dissipation groove (6).