CROSS-REFERENCE TO RELATED APPLICATIONS

This application is the National Stage of International Application No. PCT/CN2017/117820, “Locking Apparatus, Powertrain, Power Transmission System, and Vehicle,” filed Dec. 21, 2017; which claims priority to and benefits of Chinese Patent Application Serial No. 2016-11265803.5, filed with the State Intellectual Property Office of P. R. China on Dec. 30, 2016. The entire content of the above-referenced applications are incorporated herein by reference.

FIELD

The present invention relates to the field of vehicle technology, and in particular to a locking device, a power assembly having the locking device, a power transmission system having the power assembly, and a vehicle having the power transmission system.

BACKGROUND

In the related art, when the power transmission system adopts the wheel-side drive form, the power assembly occupies a large space, the vehicle layout is unreasonable, and the mounting and dismounting steps are complicated. Meanwhile, the power components that drive the two wheels are independent of each other. When the wheel on one side slips or the wheel-side motor on one side is damaged, the vehicle cannot work or cannot escape, so there is room for improvement.

SUMMARY

An objective of the present invention is to at least resolve one of the technical problems in the related art to some extent. To this end, the present invention provides a locking device which is simple in structure.

The present invention further provides a power assembly having the above locking device.

The present invention further provides a power transmission system having the above power assembly.

The present invention further provides a vehicle having the above power transmission system.

The locking device according to the present invention includes: a first flange, the first flange being adapted to be fixed on a first shaft; a second flange, the second flange being adapted to be fixed on a second shaft; a first flange locking structure, the first flange locking structure being used for selectively locking the first flange and the second flange to be adapted to rotate the second flange synchronously with the first flange; and a second flange locking structure, the second flange locking structure being used for selectively locking the second flange and the first flange to be adapted to rotate the first flange synchronously with the second flange; wherein the first flange locking structure and the second flange locking structure each include: a synchronizing ring, the synchronizing ring being normally connected to the corresponding flange to be adapted to rotate synchronously with the corresponding flange, and the synchronizing ring being slidable relative to the corresponding flange; and a driving component, the driving component selectively pushing the synchronizing ring to slide from an unlocked position to a locked position in an axial direction of the corresponding flange, wherein when the synchronizing ring is in the locked position, the two synchronizing rings are connected to be adapted to rotate the other flange synchronously with the flange corresponding to the synchronizing ring, and when the synchronizing ring is in the unlocked position, the two synchronizing rings are separated.

The locking device according to embodiments of the present invention can realize the two-way locking function, and is simple in structure.

The power assembly according to embodiments of the present invention includes: a first power component and a second power component, the first power component being used for driving a wheel on the left side, the second power component being used for driving a wheel on the right side, the first power component and the second power component each including a motor and a transmission, and the transmission being adapted to be connected between the motor and the wheel on the corresponding side; and the locking device according to the embodiments of the first aspect, the first power component including a first shaft, the second power component including a second shaft, the first flange being fixed on the first shaft, the second flange being fixed on the second shaft, and the locking device being used for selectively synchronizing the first shaft and the second shaft.

By using the power assembly according to the embodiments of the present invention, by providing the locking device to synchronize the first power component and the second power component, when the wheel on one side slips or the motor on one side is damaged or fails, the vehicle can still operate and has a strong ability to escape.

The power transmission system according to embodiments of the present invention includes at least one of the power assemblies described in the above embodiments, so that when the wheel on one side slips or the motor on one side is damaged or fails, the vehicle can still operate and has a strong ability to escape.

The vehicle according to embodiments of the present invention includes the above-described power transmission system, so that the vehicle has a strong ability to escape and adapts to various working conditions.

