Planetary-gear-type equal-ratio-output inter-axle slip-limiting differential mechanism for vehicle

Abstract

The invention discloses a planetary-gear-type equal-ratio-output inter-axle slip-limiting differential mechanism for a vehicle. The planetary-gear-type equal-ratio-output inter-axle slip-limiting differential mechanism comprises a front-drive planetary gear mechanism and a rear-drive planetary gear mechanism which are installed at the two ends of a driving shaft, and the driving shaft is arranged in a box. Power of the front-drive planetary gear mechanism is input from a front-drive integrated sun gear and output from a front-drive power shaft through a slip-limiting fixing frame, and the transmission ratio of the front-drive planetary gear mechanism is -alpha1. Power of the rear-drive planetary gear mechanism is input from a rear-drive integrated sun gear and output from a rear-drive power shaft through the slip-limiting fixing frame, and the transmission ratio of the rear-drive planetary gear mechanism is 1+alpha2. Inter-axle equal-ratio output is achieved when the alpha1 is equal to 1+alpha2. The slip-limiting fixing frame is formed by a front-drive planetary carrier and a rear-drive gear ring in a connected mode by using the characteristic that the rotating speeds of front-drive output and rear-drive output are opposite; the slip-limiting fixing frame rotates at a certain speed to be used for achieving the inter-axle differential. Brake pads are installed on the slip-limiting fixing frame, and when drive slip occurs, the friction slip-limiting effect is achieved. The ground clearance of a vehicle chassis is easily enlarged, the attachment force is easily increased, and the passage capacity of a vehicle is easily improved.

Description

technical field [0001] The invention relates to the technical field of automobile transmission, in particular to a limited-slip differential between equal-ratio output shafts of a planetary gear type vehicle. Background technique [0002] At present, the four-wheel drive of automobiles is mainly divided into three types: full-time four-wheel drive, timely four-wheel drive and part-time four-wheel drive. Among them, the full-time four-wheel drive mainly uses the Torsen inter-axle differential. The two ends of the connecting shaft are separated, and the vehicle installed with this differential can only be in the full-time four-wheel drive state. The vehicle's passing performance is good, but the fuel economy is poor. Widely used; while the timely four-wheel drive is controlled by computer, which can adjust the four-wheel drive mode in real time according to the road surface conditions to realize the full-time four-wheel drive function. However, this mechanism system is complex...

AI Technical Summary

Problems solved by technology

[0002] At present, the four-wheel drive of automobiles is mainly divided into three types: full-time four-wheel drive, timely four-wheel drive and part-time four-wheel drive. Among them, the full-time four-wheel drive mainly uses the Torsen inter-axle differential. The two ends of the connecting shaft are separated, and the vehicle installed with this differential can only be in the full-time four-wheel drive state. The vehicle's passing performance is good, but the fuel economy is poor. Widely used; while the timely four-wheel drive is controlled by computer, which can adjust the four-wheel drive mode in real time according to the road surface conditions to realize the full-time four-wheel drive function. However, this mechanism system is complex and the response is lagging. It has been widely used in mid-level off-road vehicles. In recent years, With the development of electronic control technology, many luxury off-road vehicles are gradually increasing the application of electronic control technology, and the time-sharing four-wheel drive needs manual switching, which has been gradually eliminated

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