A kind of central limited-slip differential device, the drive system of four-wheel vehicle including it

Abstract

The invention discloses a central limited-slip differential device, which includes a power input shaft, a clutch, a ratchet assembly, a power output shaft, a power transmission assembly and a motion execution assembly, the clutch includes a driving part and a driven part, and the ratchet assembly Including the driving part and the driven part, the driving part of the clutch and the driving part of the ratchet assembly are respectively installed on the power input shaft, and the power transmission assembly and the end of the power output shaft close to the power input shaft are connected by splines. The driven part of the clutch and the driven part of the ratchet assembly are installed on the assembly; the motion execution assembly is connected with the power transmission assembly through bearings, so that the active part of the clutch and the driven part are engaged or separated, and the ratchet assembly The driving and driven parts are engaged or disengaged. The invention can realize the mechanical automatic switching from two-wheel drive to four-wheel drive when the four-wheel vehicle is moving forward, and realize the four-wheel drive of the four-wheel vehicle through the combination of the clutch during the backward process.

Description

technical field [0001] The invention belongs to the field of automobile transmission devices, and more specifically relates to a central limited-slip differential device. Background technique [0002] Commonly used cars are divided into two types of drive, one is two-wheel drive, and the other is four-wheel drive. Compared with two-wheel drive, four-wheel drive has advantages in handling and passability. Four-wheel drive is generally divided into three categories: timely four-wheel drive, part-time four-wheel drive and full-time four-wheel drive. [0003] The central transfer case of timely four-wheel drive and part-time four-wheel drive has no differential device. Generally, the power of the front axle and the rear axle are directly connected through the clutch. The torque ratio of the front and rear axles is 50:50. On dirt roads and other roads, the four-wheel drive state cannot be driven on paved roads for a long time, otherwise the central transfer case will be overhea...

AI Technical Summary

Problems solved by technology

Although it mentions that the vehicle can be changed to four-wheel drive when the vehicle is slipping when it is in the reverse state, but in this four-wheel drive state, although the clutch is engaged, the pawl of the ratchet assembly slides on the ratchet wheel, relying on a small amount of friction when slipping. The dialing force realizes that component A drives component B. This state is a weak four-wheel drive, and the torque ratio of the front and rear axles is about 5:95 or even smaller. This is due to the reverse slipping function of the ratchet. The patent cannot fundamentally solve the situation that the vehicle slips when reversing

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