Differential transmission system of full-time eight-wheel drive vehicle

Abstract

The invention provides a differential transmission system of a full-time eight-wheel drive vehicle. The differential transmission system comprises one existing one-input two-output transfer case assembly and two one-input two-output transfer case assemblies, wherein the authenticated publication patent number of the one-input two-output transfer case assemblies is CN2911332 and the one-input two-output transfer case assemblies are manufactured by a full-time four-wheel differential transmission device; a transmission box of the vehicle is in transmission connection with one one-input two-output transfer case assembly; the two output ends of the one-input two-output transfer case assembly are respectively connected with one one-input four-output differential transfer case assembly between a first axle and a second axle and a one-input four-output differential transfer case assembly between a third axle and a fourth axle; the one-input four-output differential transfer case assembly between the first axle and the second axle drives four wheels of the first axle and the second axle; and the one-input four-output differential transfer case assembly between the third axle and the fourth axle drives four wheels of the third axle and the fourth axle. The differential transmission system provided by the invention is a pure-mechanical structure and can enable the eight-wheel drive vehicle to maintain a full-time all-wheel drive state all the time at any speed.

Description

technical field [0001] The invention relates to a differential transmission system of a full-time all-wheel drive vehicle. Background technique [0002] Ordinary differentials are composed of planetary gears, planetary gear carriers (differential case), side gears and other parts. The power of the engine enters the differential through the transmission shaft, directly drives the planetary gear carrier, and then the planetary gear drives the left and right half-shaft gears to drive the left and right wheels respectively. The design requirements of the differential meet: (rotational speed of the left half shaft) + (rotational speed of the right half shaft) = 2 (rotational speed of the planetary wheel carrier). When the car is going straight, the speeds of the left and right wheels and the planetary wheel carrier are equal and in a balanced state, but when the car turns, the balanced state of the three is destroyed, resulting in a decrease in the speed of the inner wheel and a...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the defects of time-sharing drive of eight-wheel drive vehicles, such as difficult operation, low passing capacity, low speed during all-wheel drive, high fuel consumption, and poor adaptability, and to reduce the gap between time-sharing drive and all-wheel drive. It reduces the unreliable factors of electronically controlled operation, and changes the electronically controlled all-wheel drive structure to a purely mechanical full-time all-wheel drive structure, which simplifies the full-time all-wheel drive and maximizes the reliability of pure machinery and security

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