Electronically controlled differential lock control mechanism and control method

Abstract

The invention relates to an electrically-control type differential lock control mechanism, and belongs to the technical field of electrically-control type automobile drive axles. The electrically-control type differential lock control mechanism comprises a reducer shell. A shifting fork shaft is arranged in the reducer shell and sleeved with a shifting fork and a return spring. The shifting fork is connected with a shift sleeve in a limiting mode. The shift sleeve is arranged on a main shaft in a sleeving mode. An axial limiting sleeve on the main shaft is provided with a drive gear capable of being meshed with the shift sleeve. An electric control mechanism is further arranged in the reducer shell. The output end of the electric control mechanism is connected with a push rod mechanism capable of linearly moving. The push rod mechanism and the shifting fork shaft are coaxially arranged. The push rod mechanism makes axial contact with the shifting fork shaft in a connected mode. The invention further discloses an electrically-control differential lock control method. By means of the electronically-control differential lock control mechanism and method, locking and separation of a differential lock can be achieved under the conditions that no gas source exists when an automobile is motionless and after parking and flameout are conducted, gear shifting is convenient to conduct, and the locking requirement required in the hill-holding brake process is met.

Description

technical field [0001] The invention relates to an electronically controlled vehicle drive axle, in particular to an electronically controlled differential lock control mechanism and a control method. Background technique [0002] In the all-wheel drive or double-axle drive system, the main reducer and the transfer box of the middle and rear axles need to be equipped with an inter-axle differential or an inter-wheel differential to ensure that the wheels of the car are not equal when turning. It can rotate at corresponding different speeds, so as to meet the requirements of vehicle driving kinematics. However, for off-road vehicles, there must be a differential lock function if there is a differential, otherwise the wheels on one side will slip, which will seriously affect the passability of the vehicle. At present, the differential locking function of the differential of the existing drive axle or transfer case assembly is basically pneumatically controlled, and the operat...

AI Technical Summary

Problems solved by technology

This structure is highly dependent on the air source and air pressure, and often encounters risks such as air leakage, card issuance, and failure to shift gears, especially when the car is parked or turned off.

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