Integrated double wishbone torsion bar spring independent suspension front axle assembly

Abstract

Disclosed is an integrated double-cross-arm torsion spring independent-suspension front axle assembly. Axle load application range of the front axle assembly is 2-3.5 tons. The front axle assembly comprises a double-cross-arm torsion spring independent-suspension system, a breakoff steering system, a brake system and an integrated subframe, which are integrally connected. By the aid of a double-cross-arm torsion spring independent-suspension, deflection of a steering wheel is effectively eliminated; unsprung mass is decreased, and vehicle driving smoothness is improved; an upper cross arm and a lower cross arm are mounted on the integrated subframe which provides a large space, arrangement of an engine is facilitated, and riding comfort is improved. Meanwhile, integral vehicle gravity center is lowered, and driving operation stability is improved. Furthermore, by arranging the integrated subframe and mounting the front axle and the steering assembly on the integrated subframe, entire assembly process is simple and production cost is saved.

Description

technical field [0001] The invention relates to the technical field of a front axle assembly of a commercial vehicle with an axle load of 2 to 3.5 tons, in particular to an integrated double wishbone torsion bar spring independent suspension front axle assembly. Background technique [0002] With the development of the expressway network, the driving speed of automobiles continues to increase. People pay more and more attention to the driving stability and driving safety of vehicles. At the same time, people's requirements for driving comfort are also increasing. Non-independent suspension Commercial vehicles can no longer meet the requirements of ride comfort and handling stability. [0003] At present, the chassis assembly system of commercial vehicles basically uses non-independent suspension and integral steering trapezoidal mechanism; the traditional leaf spring non-independent suspension front axle assembly has poor driving comfort and handling stability; it also impro...

AI Technical Summary

Problems solved by technology

[0002] With the development of the expressway network, the driving speed of automobiles continues to increase. People pay more and more attention to the driving stability and driving safety of vehicles. At the same time, people's requirements for driving comfort are also increasing. Non-independent suspension Commercial vehicles can no longer meet the requirements of ride comfort and handling stability.

[0003] At present, the chassis assembly system of commercial vehicles basically uses non-independent suspension and integral steering trapezoidal mechanism; the traditional leaf spring non-independent suspension front axle assembly has poor driving comfort and handling stability; it also improves ride comfort. Air spring non-independent suspension front axle assembly, which improves ride comfort on the basis of traditional leaf spring suspension, but the cost is high, and its handling stability is relatively little improved

At present, there are also a small number of independent suspension front axle assemblies used in commercial vehicles. From the perspective of driving speed, their use effect is not ideal. First of all, compared with passenger vehicles, the machining accuracy of commercial vehicle frames and other components is low. Seriously affect the performance of the independent suspension; again, some independent suspension front axle assemblies have a large engine layout space, but there is no beam at the force point of the frame to strengthen the lateral stiffness and torsional stiffness of the frame, resulting in deformation of the frame As a result, the steering and suspension kinematic characteristics change, affecting handling stability and driving safety

In addition, some use a rack and pinion steering system, and its layout requirements are very inconvenient for the original commercial vehicle to improve the chassis, and its transmission efficiency is very low

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