Offset driving front axle of heavy-duty lorry

Abstract

The invention relates to a driving front axle device of a heavy-duty lorry, in particular to an offset driving front axle of a 3.5T-5.5T heavy-duty lorry. The offset driving front axle comprises axlehousing and a main reducer assembly mounted in the axle housing. The main reducer assembly includes a driving helical gear and a driven helical gear which are connected to each other. According to thestructural feature of the offset driving front axle, the central axis of the driving helical gear is offset to the left by an A distance from the center line of a vehicle, and meanwhile, the centralaxis of the driving helical gear is offset downward by a B distance from the transverse central axis of the axle housing. The A distance is 160-205 mm and the B distance is 20-35 mm. The offset driving front axle has the advantages that the technical bias of a prior design is overcome, and the main reducer assembly is greatly offset, so that the problem of interference between the driving front axle and a oil sump of an engine is avoided, the service life of relevant parts is effectively prolonged, the failure rate of vehicle driving is reduced, and the unexpected technical effects that the problem of scratching of a bottom plate and the road surface can be effectively avoided, the vehicle passing ability is improved, and the stable operation of the engine is ensured are achieved.

Description

technical field [0001] The invention relates to a driving front axle device of a truck, in particular to a bias driving front axle of a 3.5T-5.5T truck. Background technique [0002] Existing heavy-duty vehicles such as medium-sized trucks and construction machinery vehicles equipped with drum-brake steering drive axles are equipped with corresponding engines and steering drive front axles connected to the engines according to their loads. The determination of engine specifications indicates the determination of the shape of its oil pan. Under the limitation of leaf spring distance and wheelbase, the relative position between the steering drive front axle and the engine is also determined. [0003] However, any vehicle hopes to reduce the installation height of the engine to the greatest extent so as to obtain a greater viewing distance, thereby ensuring driving safety to the greatest extent possible. However, since 3.5T-5.5T trucks generally have relatively tall cargo comp...

AI Technical Summary

Problems solved by technology

However, since 3.5T-5.5T trucks generally have relatively tall cargo compartments, the front part of the vehicle is often higher from the ground, the cab is also higher, and the space is larger than that of ordinary vehicles. The main reducer of the steering drive front axle The offset is less than 100mm, so the design of the drive front axle will not be considered to obtain a better engine installation height

[0004] On the other hand, due to the limitation of the existing leaf spring distance and wheelbase, the offset of the front drive flange of the transfer case is generally about 200mm, which causes the angle between the front drive shaft to be too large, resulting in the fact that the drive front axle is not only easy to connect with the engine. The oil pan interferes, and also causes the transmission shaft and the transmission parts connected to it to generate torsional vibration, thereby generating additional alternating loads, resulting in a reduction in the life of related components, causing the vehicle to easily malfunction during operation, which is not conducive to safe driving

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