阅读说明：本技术 一种两挡三级行星减速非轴电桥 (Two-gear three-stage planetary speed reduction non-shaft bridge ) 是由 林志强 毛正松 张松 吴苾曜 陈涛 高阿鹏 欧阳石坤 谭长珅 邓玉胜 刘健华 翚 于 2020-04-29 设计创作，主要内容包括：本发明提供一种两挡三级行星减速非轴电桥,包括：与驱动轮上的轴承固接的承载架以及通过输出轴与驱动轮的轴承传动连接的致动器,所述致动器包括托森差速器、布置在第一外壳中的三级行星减速齿轮组以及布置在第二外壳中的电机；本发明提供的两挡三级行星减速非轴电桥,取消了常规车传动系统中的变速箱和传动轴,动力源由发动机更换为电机,通过减速器连接进行动力传送,具有装配简单、传动效率高的优点,克服了传统传动方式存在的传动效率低、结构复杂、零部件多、装配效率低等缺点。(The invention provides a two-gear three-stage planetary deceleration non-shaft bridge, which comprises: a carrier fixedly connected with a bearing on the driving wheel and an actuator in transmission connection with the bearing of the driving wheel through an output shaft, wherein the actuator comprises a Torsen differential, a three-stage planetary reduction gear set arranged in a first shell and a motor arranged in a second shell; the two-gear three-level planetary speed reduction non-shaft electric bridge provided by the invention cancels a gearbox and a transmission shaft in a transmission system of a conventional vehicle, the power source is replaced by a motor, and power transmission is carried out through the connection of a speed reducer.)

1. A two-speed, three-stage planetary reduction non-shaft bridge, comprising: a carrier frame fixedly connected with a bearing on the driving wheel and an actuator in transmission connection with the bearing of the driving wheel through an output shaft, wherein the actuator comprises a Torsen differential, a three-stage planetary reduction gear set arranged in a first shell and a motor arranged in a second shell, and is characterized in that:

the three-stage planetary reduction gear set consists of a front row planetary gear, a front row sun gear, a front row planet carrier, a first hollow shaft, a second hollow shaft, a first reduction gear, a second reduction gear, a third reduction gear, a first speed change gear, a second speed change gear, a synchronizer, a shaft sleeve and a gear ring;

the motor is in transmission connection with a first hollow shaft, the first hollow shaft is in transmission connection with a front row sun gear, the front row sun gear is meshed with a front row planet gear, the front row planet gear is also meshed with a gear ring, the gear ring is fixedly connected with a first shell, the front row planet carrier is in transmission connection with the front row planet gear, the front row planet carrier is also in transmission connection with a first reduction gear through a second hollow shaft, the first reduction gear is meshed with a second reduction gear, the second reduction gear is in coaxial transmission connection with a third reduction gear, the second reduction gear is also meshed with a first speed change gear, the third reduction gear is also meshed with a second speed change gear, and the synchronizer is arranged between the first speed change gear and the second speed change gear;

the synchronizer is further in transmission connection with a shaft sleeve of the Torsen differential mechanism, the output shaft is composed of a first output shaft and a second output shaft, and the Torsen differential mechanism is in transmission connection with the first output shaft and the second output shaft respectively.

2. The two-speed three-stage planetary reduction non-shaft bridge according to claim 1, characterized in that: the Torsen differential and the three-stage planetary reduction gear set are arranged in the first housing.

3. The two-speed three-stage planetary reduction non-shaft bridge according to claim 1 or 2, characterized in that: the motor, the three-stage planetary reduction gear set and the Torsen differential mechanism are positioned on the same axis.

Technical Field

The invention belongs to the technical field of axle transmission, and particularly relates to a two-gear three-stage planetary speed reduction non-axle bridge.

Background

Disclosure of Invention

The invention aims to provide a two-gear three-level planetary speed reduction non-shaft bridge, and aims to solve the problem of gear wear caused by fit errors of a differential, a speed reducer and an output shaft in the prior art.

In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:

the invention provides a two-gear three-stage planetary deceleration non-shaft bridge, which comprises: a carrier fixedly connected with a bearing on the driving wheel and an actuator in transmission connection with the bearing of the driving wheel through an output shaft, wherein the actuator comprises a Torsen differential, a three-stage planetary reduction gear set arranged in a first shell and a motor arranged in a second shell;

the three-stage planetary reduction gear set consists of a front row planetary gear, a front row sun gear, a front row planet carrier, a first hollow shaft, a second hollow shaft, a first reduction gear, a second reduction gear, a third reduction gear, a first speed change gear, a second speed change gear, a synchronizer, a shaft sleeve and a gear ring;

the motor is in transmission connection with a first hollow shaft, the first hollow shaft is in transmission connection with a front row sun gear, the front row sun gear is meshed with a front row planet gear, the front row planet gear is also meshed with a gear ring, the gear ring is fixedly connected with a first shell, the front row planet carrier is in transmission connection with the front row planet gear, the front row planet carrier is also in transmission connection with a first reduction gear through a second hollow shaft, the first reduction gear is meshed with a second reduction gear, the second reduction gear is in coaxial transmission connection with a third reduction gear, the second reduction gear is also meshed with a first speed change gear, the third reduction gear is also meshed with a second speed change gear, and the synchronizer is arranged between the first speed change gear and the second speed change gear;

the synchronizer is further in transmission connection with a shaft sleeve of the Torsen differential mechanism, the output shaft is composed of a first output shaft and a second output shaft, and the Torsen differential mechanism is in transmission connection with the first output shaft and the second output shaft respectively.

Preferably, the tosen differential and the three-stage planetary reduction gear set are disposed in the first housing.

Preferably, the motor, the three-stage planetary reduction gear set and the Torsen differential are located on the same axis.

The invention has the advantages that:

1. compared with the prior art, the two-gear three-level planetary reduction non-shaft electric bridge adopts a motor and rear axle straight frame mounting structure, a gearbox and a transmission shaft in a conventional vehicle transmission system are eliminated, a power source is replaced by a motor from an engine, and power transmission is carried out through the connection of a speed reducer, so that the two-gear three-level planetary reduction non-shaft electric bridge has the advantages of simple assembly and high transmission efficiency, overcomes the defects of low transmission efficiency, complex structure, more parts, low assembly efficiency and the like of the traditional transmission mode, meets the national requirements on energy consumption and emission, and promotes the development of electric vehicles; because of canceling the gearbox, reduced the speed reduction increase of torsion to the power supply, for solving this problem, the reduction gear on the rear axle in this application is the tertiary planet speed reduction by traditional one-level speed reduction change design to reach the speed reduction increase of torsion that the whole car dynamic nature required.

2. The two-gear three-level planetary speed reduction non-shaft bridge adopts the Torsen differential mechanism, can realize constant-time and continuous torque control management, and continuously works without time delay, but does not intervene in the adjustment of total torque output and has no torque loss; because the multi-plate clutch equipped by the traditional self-locking differential is not available, the wear does not exist, and the maintenance is free.

3. The two-gear three-level planetary speed reduction non-shaft bridge adopts planetary speed reduction, has compact structure, small return clearance, higher precision and long service life, and can improve the output torque of the two-gear three-level planetary speed reduction non-shaft bridge while reducing the speed.

Drawings

FIG. 1 is a schematic structural diagram of a two-gear three-stage planetary reduction non-shaft bridge according to the present invention;

fig. 2 is a schematic view of the internal structure of the actuator according to the present invention.

In the drawing, 100 is a drive wheel, 200 is a carrier, 300 is an output shaft, 400 is an actuator, 401 is a first housing, 402 is a second housing, 403 is a motor, 404 is a tosen differential, 405 is a front sun gear, 406 is a front planet gear, 407 is a front planet carrier, 408 is a first hollow shaft, 409 is a second hollow shaft, 410 is a first reduction gear, 411 is a second reduction gear, 412 is a third reduction gear, 413 is a first change gear, 414 is a second change gear, 415 is a synchronizer, 416 is a sleeve, and 417 is a ring gear.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail by embodiments with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The invention provides a two-gear three-stage planetary speed reduction non-shaft bridge, as shown in figure 1, comprising: a carrier 200, which is fixed to bearings on the drive wheel 100, and an actuator 400, which is drivingly connected to the bearings of the drive wheel 100 via an output shaft 300, said actuator 400 comprising, as shown in fig. 2, a tosen differential 404, a three-stage planetary reduction gear set arranged in a first housing 401, and an electric motor 403 arranged in a second housing 402; the structural arrangement of the bearing frame 200 improves the power output stability and the bearing capacity;

the three-stage planetary reduction gear set consists of a front row sun gear 405, a front row planet gear 406, a front row planet carrier 407, a first hollow shaft 408, a second hollow shaft 409, a first reduction gear 410, a second reduction gear 411, a third reduction gear 412, a first speed change gear 413, a second speed change gear 414, a synchronizer 415, a shaft sleeve 416 and a gear ring 417; the three-stage planetary reduction gear set adopts two-gear three-stage planetary reduction, so that reduction and torque increase can be realized;

the motor 403 is in transmission connection with a first hollow shaft 408, the first hollow shaft 408 is in transmission connection with a front row sun gear 405 for transmitting the power of the motor 403 to the front row sun gear 405, the front row of sun gears 405 is meshed with the front row of planet gears 406, the front row of planet gears 406 is also meshed with the ring gear 417, the gear ring 417 is fixedly connected with the first housing 401, the front row planet carrier 407 is in transmission connection with the front row planet gear 406, the front row planet carrier 407 is also in transmission connection with the first reduction gear 410 through a second hollow shaft 409 to realize primary speed reduction, the first reduction gear 410 is meshed with a second reduction gear 411 to realize two-stage reduction, the second reduction gear 411 is in coaxial transmission connection with a third reduction gear 412, the second reduction gear 411 is also meshed with a first speed change gear 413, the third reduction gear 412 is also meshed with a second speed change gear 414, the synchronizer 415 is disposed between the first speed change gear 413 and the second speed change gear 414; when the synchronizer 415 is connected to the first speed change gear 413, the power output of the second hollow shaft 409 passes through the first speed reduction gear 410, the second speed reduction gear 411 and then is connected to the first speed change gear 413 to realize two-stage speed reduction; when the synchronizer 415 is connected to the second transmission gear 414, the power output of the second hollow shaft 409 passes through the first reduction gear 410, the second reduction gear 411, the third reduction gear 412 and then is connected to the second transmission gear 414 to realize three-stage speed reduction;

the synchronizer 415 is further in transmission connection with a shaft sleeve 416 of the tosen differential 404, the output shaft 300 is composed of a first output shaft 301 and a second output shaft 302, and the tosen differential 404 is in transmission connection with the first output shaft 301 and the second output shaft 302 respectively and used for outputting power to the driving wheel 100.

In one embodiment, the tosen differential 404 and the three-stage planetary reduction gear set are disposed in the first housing 401, and the tosen differential 404 and the three-stage planetary reduction gear set are disposed in the first housing 401, so that the integration level can be improved and the occupied volume can be reduced.

In some embodiments, the electric machine 403, the three-stage planetary reduction gear set, and the tosen differential 404 are located on the same axis.

Reference in the specification to "some embodiments," "one embodiment," or "an embodiment," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in some embodiments," "in one embodiment," or "in an embodiment," or the like, in various places throughout this specification are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Thus, a particular feature, structure, or characteristic illustrated or described in connection with one embodiment may be combined, in whole or in part, with a feature, structure, or characteristic of one or more other embodiments without limitation, as long as the combination is not logical or operational. Additionally, the various elements of the drawings of the present application are merely schematic illustrations and are not drawn to scale.

Having thus described several aspects of at least one embodiment of this invention, it is to be appreciated various alterations, modifications, and improvements will readily occur to those skilled in the art. Such alterations, modifications, and improvements are intended to be within the spirit and scope of the invention.