A Splash Lubrication System for Fixed-shaft Two-speed Gearbox of Electric Vehicle

Abstract

A splash lubrication system for a fixed-axis two-speed gearbox for an electric vehicle, which relates to the field of vehicle transmission machinery lubrication; it includes a box body and a box cover; the box body and the open end of the box cover are docked to form a closed cavity; the inside of the box body is provided with a first The oil collection pool, the second oil collection pool and the oil guide groove of the box; the first oil collection pool is set at the middle position between the first middle through hole and the first output through hole; the second oil collection pool is set at the middle position of the first middle through hole The top position; the oil guide groove of the box is set at the top position of the first input through hole; the third oil collection pool and the oil guide groove of the box cover are arranged inside the box cover; the third oil collection pool and the oil guide groove of the box cover are both set on the top of the box cover On the inner wall; among them, the third oil collection pool is arranged directly above the second output through hole; the oil guide groove of the tank cover is arranged above the second input through hole; the present invention effectively improves the splash lubrication flow rate and satisfies the continuous operation of the gearbox When the lubrication requirements of each shaft bearing.

Description

technical field [0001] The invention relates to the field of vehicle transmission machinery lubrication, in particular to a splash lubrication system for a fixed-axis two-speed gearbox of an electric vehicle. Background technique [0002] The gearbox is a key component of the electric vehicle drivetrain. In order to reduce the cost and the complexity of the system, the shaft drive structure is widely used in electric vehicles at present, that is, each drive axle is equipped with an electric motor, and the electric motor inputs the driving force to the gearbox arranged in the middle section of the drive axle. There is an output end, and the power is output to the left and right wheels through the half shaft. The gearbox plays a key role in transmission, deceleration, speed change and differential speed of the wheels on both sides. [0003] Because the motor has a wider range of constant torque and speed, the gearbox for electric vehicles has the characteristics of fewer gea...

AI Technical Summary

Problems solved by technology

In this lubrication method, the oil splashes and flows down the surface of the parts under the action of gravity, so that the flow direction of the splashed oil cannot be effectively planned, and the lubrication of bearings, differentials and other parts that need to be fully lubricated cannot be guaranteed.

Images