阅读说明：本技术 一种动力总成和车辆 (Power assembly and vehicle ) 是由 洪健 张骁悍 陈小国 于 2020-04-21 设计创作，主要内容包括：一种动力总成和车辆,涉及传动技术领域,动力总成包括壳体(30)、第一转轴(10)、第二转轴(20)和压紧件(40)；第一转轴(10)通过两个轴承(01,02)定位在壳体(30)内,第二转轴(20)通过一个轴承(03)定位在壳体(30)内,且第二转轴(20)能够沿轴向滑动；第一转轴(10)设有第一联接部(11),第二转轴(20)设有第二联接部(21),第一联接部(11)与第二联接部(21)联接,以使第一转轴(10)和第二转轴(20)同步转动；第一转轴(10)的第二端设有倾斜于第一转轴(10)的轴心的第一对中面(12),第二转轴(20)的第四端设有倾斜于第二转轴(20)的轴心的第二对中面(22),压紧件(40)用于向第二转轴(20)施加作用力,以使第一对中面(12)与第二对中面(22)相抵,从而能够有效保证第一联接部(11)和第二联接部(21)之间的对中性,以解决动力总成结构复杂、加工精度高、易产生振动的问题。(A power assembly and a vehicle relate to the technical field of transmission, and the power assembly comprises a shell (30), a first rotating shaft (10), a second rotating shaft (20) and a pressing piece (40); the first rotating shaft (10) is positioned in the shell (30) through two bearings (01, 02), the second rotating shaft (20) is positioned in the shell (30) through one bearing (03), and the second rotating shaft (20) can slide along the axial direction; the first rotating shaft (10) is provided with a first connecting part (11), the second rotating shaft (20) is provided with a second connecting part (21), and the first connecting part (11) is connected with the second connecting part (21) so as to enable the first rotating shaft (10) and the second rotating shaft (20) to synchronously rotate; the second end of first pivot (10) is equipped with the first centering face (12) of the axle center of slope in first pivot (10), the fourth end of second pivot (20) is equipped with the second centering face (22) of the axle center of slope in second pivot (20), compress tightly piece (40) and be used for applying the effort to second pivot (20), so that first centering face (12) offsets with second centering face (22), thereby can effectively guarantee the alignment nature between first coupling part (11) and second coupling part (21), in order to solve power assembly structure complicacy, the machining precision is high, easily produce the problem of vibration.)

A powertrain, comprising:

a housing;

a first shaft having a first end and a second end, the first end positioned within the housing by a first bearing and the second end positioned within the housing by a second bearing;

a second rotating shaft, which is arranged coaxially with the first rotating shaft and has a third end and a fourth end, wherein the third end is positioned in the shell through a third bearing, and the third bearing can slide relative to the shell along the axial direction;

a second end of the first rotating shaft is provided with a first connecting part, a fourth end of the second rotating shaft is provided with a second connecting part, and the first connecting part is connected with the second connecting part so as to enable the first rotating shaft and the second rotating shaft to synchronously rotate;

the first rotating shaft is provided with a first centering surface, the first centering surface is arranged obliquely to the axis of the first rotating shaft, and in a first axial direction, the distance between the first centering surface and the axis of the first rotating shaft is gradually increased;

the second rotating shaft is provided with a second centering surface, the second centering surface is inclined to the axis of the second rotating shaft, and in the first axial direction, the distance between the second centering surface and the axis of the second rotating shaft is gradually increased;

when the power assembly is in a working state, the first centering surface is abutted against the second centering surface, so that the first rotating shaft and the second rotating shaft are prevented from relatively moving in the radial direction.

The locomotion assembly of claim 1, further comprising a compression member;

the pressing member is connected with the housing and the third bearing and is used for applying a second axial acting force to the second rotating shaft through the third bearing, wherein the second axial direction is opposite to the first axial direction.

The power assembly according to claim 1 or 2, wherein the first centering surface is a conical inclined surface, a conical convex surface or a conical concave surface structure with the axis of the first rotating shaft as a rotating center.

The power assembly according to any one of claims 1 to 3, wherein the second centering surface is a conical inclined surface, a conical convex surface or a conical concave surface structure with the axis of the second rotating shaft as a rotating center.

The power assembly according to any one of claims 1 to 4, wherein the end surface of the second end of the first rotating shaft is provided with a butt joint hole, and the fourth end of the second rotating shaft is provided with a butt joint column;

the inner wall of the butt joint hole is provided with the first butt joint surface;

the second centering surface is formed on the peripheral surface of the butting column;

the butt joint column is inserted in the butt joint hole, and when the power assembly is in a working state, the first centering surface is abutted against the second centering surface.

The locomotion assembly of claim 5, wherein the first coupling portion comprises an internal spline disposed on an inner wall of the docking aperture;

the second coupling part comprises an external spline which is arranged on the peripheral surface of the butt column;

the butt-joint column is inserted in the butt-joint hole, and the internal spline is matched with the external spline.

The powertrain according to claim 5 or 6, wherein the inner wall of the docking hole is formed with a first auxiliary cylindrical joint surface, and the outer periphery of the docking post is formed with a second auxiliary cylindrical joint surface;

the first auxiliary joint surface is in clearance fit with the second auxiliary joint surface.

The power assembly according to any one of claims 1 to 4, wherein the second end of the first rotating shaft is provided with a butt joint column, and the end surface of the fourth end of the second rotating shaft is provided with a butt joint hole;

the first centering surface is formed on the outer peripheral surface of the butting column;

the inner wall of the butt joint hole is provided with the second butt joint surface;

the butt joint column is inserted in the butt joint hole, and when the power assembly is in a working state, the first centering surface is abutted against the second centering surface.

The locomotion assembly of claim 8, wherein the first coupling portion comprises an external spline provided to an outer circumferential surface of the docking post;

the second coupling part comprises an internal spline, and the internal spline is arranged on the inner wall of the butt joint hole;

the butt-joint column is inserted in the butt-joint hole, and the internal spline is matched with the external spline.

The powertrain according to claim 8 or 9, wherein the inner wall of the docking hole is formed with a first auxiliary cylindrical joint surface, and the outer periphery of the docking post is formed with a second auxiliary cylindrical joint surface;

the first auxiliary joint surface is in clearance fit with the second auxiliary joint surface.

The locomotion assembly of any one of claims 1 to 10, wherein the housing further comprises a limit surface arranged towards the third bearing, the limit surface being adapted to abut against an outer ring of the third bearing when the locomotion assembly is in an impact state to limit the third bearing to move in the second axial direction.

The powertrain according to any one of claims 1 to 11, further comprising a speed reducer and a motor;

the first rotating shaft is an input shaft of the speed reducer, and the second rotating shaft is an output shaft of the motor.

A vehicle comprising a wheel and a powertrain as claimed in any one of claims 1 to 12;

the first rotating shaft is in transmission connection with the wheels and is used for transmitting driving torque to the wheels.