A Design Method of Suspension Elastic Components for Heavy-duty All-Drive Off-Road Vehicles

Abstract

The invention discloses a hanging elastic element for a heavy all-wheel drive off-road vehicle and a design method of the element. The hanging elastic element comprises a variable-stiffness few-leaf-spring assembly, an intermediate axle assembly, a rear axle assembly and a balance shaft seat, the variable-stiffness few-leaf-spring assembly comprises primary spring group springs and secondary spring group springs, a frame is fixedly connected at the upper end of the secondary spring group spring, the upper ends of the intermediate axle assembly and the rear axle assembly are respectively connected with the upper end of the balance shaft seat through the primary spring group springs, and the lower ends of the intermediate axle assembly and the rear axle assembly are respectively connected with the lower end of the balance shaft seat through lower thrusting rods. The hanging elastic element has suitable hanging partial frequency under the independent action of the primary springs and under the combined action of the primary spring group springs and the secondary spring group springs, tests of smoothness, comfort and reliability of a real vehicle are verified, a type test is verified, and the hanging elastic element has good smoothness, comfort and reliability under various working conditions and solves the problems of poor smoothness and comfort of a linear single-stiffness leaf spring of a heavy 6X6 off-road vehicle.

Description

technical field [0001] The invention relates to the field of automobile manufacturing, in particular to a design method of a suspension elastic element for a heavy-duty all-drive off-road vehicle. Background technique [0002] Leaf spring is the most widely used elastic element in heavy-duty vehicle suspension. With the development of my country's automobile industry, heavy-duty full-drive off-road vehicles and special-purpose vehicles have put forward higher requirements for ride comfort and comfort. The suspension elastic elements of the current full-drive off-road vehicles mostly use linear and equal stiffness multi-leaf leaf springs. The ride comfort and comfort of this type of leaf springs are quite different under different load conditions, especially under no-load, half-load and other working conditions. The ride comfort and comfort are poor. However, for leaf springs used in heavy-duty full-drive off-road vehicles, it is required to have good ride comfort, comfort a...

AI Technical Summary

Problems solved by technology

The suspension elastic elements of the current full-drive off-road vehicles mostly use linear and equal stiffness multi-leaf leaf springs. The ride comfort and comfort of this type of leaf springs are quite different under different load conditions, especially under no-load, half-load and other working conditions. The smoothness and comfort are poor

However, for the leaf springs used in heavy-duty full-drive off-road vehicles, it is required to have good ride comfort, comfort and high reliability under different load conditions. At present, there is no accurate and reliable design method at home and abroad.

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