CN211820652U

CN211820652U - Speed reducer and electrically-driven connecting structure

Info

Publication number: CN211820652U
Application number: CN201922480921.3U
Authority: CN
Inventors: 李占江; 郭能; 朱先玲; 高小康; 吴小刚; 敬发兵
Original assignee: Chongqing Yuebo Transmission System Co ltd
Current assignee: Chongqing Yuebo Transmission System Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-10-30
Anticipated expiration: 2029-12-31

Abstract

The utility model provides a reduction gear and electricity drive bridge connection structure, the reduction gear drives the bridge connection structure with electricity and includes the reduction gear and drives the bridge, the reduction gear with electricity drive bridge fixed connection, the reduction gear includes retarder housing, input shaft, axis, output shaft and drive gear group, input shaft, axis and output shaft set up in inside retarder housing, input shaft and output shaft one end stretch out to retarder housing's outside, the input shaft passes through drive gear group with the axis is connected, the axis passes through drive gear group with output shaft, retarder housing with electricity drive bridge fixed connection, the reduction gear with electricity drive bridge connection structure can satisfy the needs along with the bearing space arrangement of gear size increase.

Description

Speed reducer and electrically-driven connecting structure

Technical Field

The utility model relates to an electricity drive rear axle reduction gear technical field particularly, relates to a reduction gear and electricity drive bridge connection structure.

Background

At present, the shell of the miniature axle speed reducer on the market is made of nodular cast iron. For the traditional fuel vehicle, the material has no problem, but for the electrically driven rear axle, because the motor is directly arranged on the rear axle and has a certain weight, the unsprung mass of the rear axle is increased, the controllability of the whole vehicle is reduced, and the unsprung mass of the rear axle needs to be lightened.

For an electric drive rear axle, because a high-speed motor is directly installed on a rear axle shell, the rear axle shell is required to have higher rigidity and strength than a traditional fuel axle so as to ensure the running stability of the motor in the whole vehicle running process, and therefore, the rear axle shell and a half shaft cannot be lightened.

Along with the technical development of automobile motors, the motor power and the maximum output torque are continuously increased, so that the requirement on the strength of a transmission gear is higher, according to the technical current situation of the domestic gear manufacturing industry, a common method for improving the strength of the gear is to increase the gear, and meanwhile, along with the increase of the motor output torque, the specifications of bearings at the end of each gear shaft are correspondingly improved, so that the transmission gear part and the bearing corresponding to the axial load cannot be reduced, and the weight is increased due to the strength requirement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a connecting structure of a speed reducer and an electrically driven bridge aiming at the defects of the prior art, wherein the connecting structure of the speed reducer and the electrically driven bridge comprises the speed reducer and the electrically driven bridge, and the speed reducer is fixedly connected with the electrically driven bridge;

the speed reducer comprises a speed reducer shell, an input shaft, a middle shaft, an output shaft and a transmission gear set, wherein the input shaft, the middle shaft and the output shaft are arranged inside the speed reducer shell;

the electrically driven bridge comprises an axle housing, a half shaft sleeve and a half shaft, wherein the axle housing is fixedly connected with the speed reducer housing, the half shaft is arranged in the half shaft sleeve and is connected with the speed reducer through a transmission gear set, the axial leads of the middle shaft and the half shaft are on the same plane, and the axial leads of the middle shaft and the half shaft and the axial lead of the input shaft are not on the same horizontal plane.

Further, retarder housing and axle housing junction are provided with first beaded finish and second beaded finish, and first beaded finish is set up on retarder housing, and the second beaded finish is set up on the axle housing, first beaded finish and second beaded finish fixed connection.

Furthermore, yielding notches are respectively arranged on the first reinforcing ring and the second reinforcing ring.

Further, the first reinforcement ring and the second reinforcement ring are connected by the coupling bolt and the coupling bolt hole, and the coupling bolt hole is distributed on the first reinforcement ring and the second reinforcement ring.

Furthermore, the speed reducer casing comprises a speed reducer front casing and a speed reducer rear casing, the speed reducer front casing is in threaded connection with the speed reducer rear casing, and a steel wire thread sleeve is embedded in the threaded hole.

Further, the axle housing below is provided with the reinforcing ring, reinforcing ring and axle housing threaded connection.

Furthermore, reinforcing ribs are arranged outside the speed reducer shell.

Further, the reducer case is made of an aluminum alloy.

Compared with the prior art, the reduction gear has following superior effect that is showing with the bridge connection structure that drives electronically:

1. reduction gear and electricity drive bridge connection structure's input shaft dead eye, centraxonial dead eye and semi-axis sheathed tube axial lead are not on the coplanar, can satisfy the needs along with the bearing space arrangement of gear size increase.

2. Reduction gear casing adopts the aluminum alloy to make among reduction gear and the bridge connection structure that drives of electricity, is satisfying under the demand that drives bridge reduction gear casing intensity of electricity, is showing the quality that has reduced the bridge reduction gear casing that drives of electricity.

Drawings

Fig. 1 is a schematic diagram of a connection structure between a speed reducer and an electrically driven axle according to the present invention.

Fig. 2 is a schematic view of the first reinforcing ring of the present invention.

Fig. 3 is the electric bridge structure diagram of the present invention.

Description of reference numerals: 1-a reducer; 11-a reducer housing; 111-reducer front housing; 112-reducer rear housing; 12-an input shaft; 13-the medial axis; 14-a drive gear set; 15-first reinforcement ring, 2-electric drive bridge; 21-axle housing; 22-half shaft sleeve; 23-half shaft; 24-second reinforcement ring 24, 3-abduction notch 3, 4-coupling bolt hole.

Detailed Description

The invention is described in further detail below with reference to the drawings and the detailed description.

As shown in fig. 1 to 3, the reducer and electrically driven bridge connection structure includes: the speed reducer comprises a speed reducer 1 and an electric drive bridge 2, wherein the speed reducer 1 is fixedly connected with the electric drive bridge 2, the speed reducer 1 comprises a speed reducer shell 11, an input shaft 12, a middle shaft 13, an output shaft (not shown) and a transmission gear set 14, the input shaft 12, the middle shaft 13 and the output shaft are arranged inside the speed reducer shell 11, one end of the input shaft 12 and one end of the output shaft extend out of the speed reducer shell 11, the input shaft 12 is connected with the middle shaft 13 through the transmission gear set 14, the middle shaft 13 is connected with the output shaft through the transmission gear set 14, and the speed reducer shell 11 is fixedly connected with the;

the electrically driven bridge 2 comprises an axle housing 21, a half shaft sleeve 22 and a half shaft 23, the axle housing 21 is fixedly connected with the speed reducer shell 11, the half shaft 23 is arranged in the half shaft sleeve 22 and is connected with the speed reducer 1 through a transmission gear set 14, the axial leads of the middle shaft 13 and the half shaft 23 are on the same plane, the axial leads of the middle shaft 13 and the half shaft 23 and the axial lead of the input shaft 12 are not on the same horizontal plane, the distance between the input shaft 12 and the middle shaft 13 can be increased, the speed ratio of the speed reducer 1 is improved, the distance between paired bearings is shortened, the space of an inner cavity is reduced, the space of the inner cavity of the speed reducer shell 11 is increased, the size of the gear set 14 can.

The junction of reducer casing 11 and axle housing 21 is provided with first beaded finish 15 and second beaded finish 24, first beaded finish 15 sets up on reducer casing 11, second beaded finish 24 sets up on axle housing 21, first beaded finish 15 and second beaded finish 24 fixed connection, be provided with notch 3 that steps down on first beaded finish 15 and the second beaded finish 24, can step down the great gear of diameter, make the reduction gear 1 of same platform possess bigger velocity ratio, evenly be provided with connection bolt hole 4 on first beaded finish 15 and the second beaded finish 24, first beaded finish 15 and second beaded finish 24 pass through connection bolt hole 4 and connect, can guarantee the leakproofness and the intensity of reducer casing 11 and axle housing 21.

Furthermore, the reducer casing 11 includes a reducer front casing 111 and a reducer rear casing 112, the reducer front casing 111 is in threaded connection with the reducer rear casing 112, and a steel wire thread insert is embedded in the threaded hole, so that the connection strength between the reducer front casing 111 and the reducer rear casing 112 can be enhanced.

Further, a reinforcing ring (not shown) is disposed below the axle housing 21, and the reinforcing ring is threadedly coupled to the rear axle housing 21.

Further, the exterior of the reducer case 11 is provided with a reinforcing rib (not shown), which can increase the strength of the reducer case 11.

Further, the reduction gear case 111 is made of an aluminum alloy, and the weight of the reduction gear case 1 can be reduced while ensuring the strength of the reduction gear case 11.

The above description is only a preferred embodiment of the present invention and should not be taken as limiting the invention, and it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention.

Claims

1. A reduction gear and electrically drive bridge connection structure characterized by, includes: the speed reducer is fixedly connected with the electrically-driven bridge;

the speed reducer comprises a speed reducer shell, an input shaft, a middle shaft, an output shaft and a transmission gear set, wherein the input shaft, the middle shaft and the output shaft are arranged inside the speed reducer shell, one ends of the input shaft and the output shaft extend out of the speed reducer shell, the input shaft is connected with the middle shaft through the transmission gear set, the middle shaft is connected with the output shaft through the transmission gear set, and the speed reducer shell is fixedly connected with the electric drive bridge;

the electric drive axle includes axle housing, semi-axis sleeve pipe and semi-axis, the axle housing with reduction gear housing fixed connection, the semi-axis set up in the semi-axis is intraductal and pass through drive gear group with retarder connection, the axial lead of axis and semi-axis is on the coplanar, the axial lead of axis and semi-axis with the axial lead of input shaft is not on same horizontal plane.

2. A speed reducer and electric drive axle connection structure according to claim 1, characterized in that the retarder casing with the axle housing junction is provided with first beaded finish and second beaded finish, first beaded finish is provided in on the retarder casing, the second beaded finish is provided in on the axle housing, first beaded finish and second beaded finish fixed connection.

3. The connection structure of the speed reducer and the electric drive bridge as claimed in claim 2, wherein the first reinforcing ring and the second reinforcing ring are respectively provided with a abdicating notch.

4. A speed reducer and electric drive bridge connection structure according to claim 2, wherein the first reinforcement ring and the second reinforcement ring are connected by coupling bolts and coupling bolt holes that are distributed on the first reinforcement ring and the second reinforcement ring.

5. The structure for connecting a speed reducer and an electric drive bridge according to claim 1, wherein the speed reducer casing comprises a front speed reducer casing and a rear speed reducer casing, and the front speed reducer casing is in threaded connection with the rear speed reducer casing.

6. A speed reducer and electric drive axle connection structure according to claim 1, characterized in that a reinforcing ring is arranged below the axle housing, and the reinforcing ring is in threaded connection with the axle housing.

7. The connection structure of the speed reducer and the electric drive bridge according to claim 1, wherein a reinforcing rib is provided outside the speed reducer case.

8. The speed reducer and electric drive bridge connection according to claim 1, wherein the speed reducer housing is made of an aluminum alloy.