Fibrous composite plate spring and manufacturing process thereof

Abstract

The invention discloses a fibrous composite plate spring. The fibrous composite plate spring comprises a plate spring body and a plate spring reinforcing layer, wherein the plate spring body consists of a central rectangular section and two end part sections which are positioned at two ends of the central rectangular section, and the width of the end part sections is gradually narrowed towards a direction away from the central rectangular section; the plate spring reinforcing layer and the plate spring body are made from the same material; the plate spring reinforcing layer comprises a reinforcing layer body which is covered on the upper surface or the lower surface of the plate spring body, and strengthening sections which are positioned on two sides of the reinforcing layer body; and the width of the strengthening sections is not less than the thickness of the plate spring body, the length of the strengthening sections is not less than that of the side surface of the plate spring body, and the strengthening sections are covered on the two sides of the plate spring body. By adoption of the fibrous composite plate spring, a fractured fiber layer at a chamfered part of an end part is prevented from being exposed, chamfered crackles and fiber flexing of the end part can be effectively avoided, and the carrying capacity of the plate spring is greatly improved. The invention also discloses a manufacturing process for the fibrous composite plate spring.

Description

technical field [0001] The invention relates to the technical field of leaf springs, in particular to a fiber composite material leaf spring and a manufacturing process thereof. Background technique [0002] The leaf spring is a leaf spring composed of no less than one piece of spring steel superimposed and combined. It relies on the friction between the plates to have high cushioning and damping performance. It is mostly used for shock absorption of automobile suspensions. Widely used in various vehicles, such as commercial vehicles (passenger cars, trucks, etc.), off-road vehicles and rail vehicles, etc. [0003] Leaf springs made of spring steel have been known for a long time. The manufacturing cost of the spring steel leaf spring is relatively low, and it has a good vehicle shock absorption effect, but the leaf spring is heavy and has poor "safety fracture", which directly leads to an increase in fuel consumption and a decrease in safety performance. [0004] Also kno...

AI Technical Summary

Problems solved by technology

This leaf spring avoids interlayer cracking caused by beveling or trimming at the end, but because the fibers in the V-shaped extrusion zone at the end cannot fully extend longitudinally, the fibers are bent, which greatly reduces the load capacity of the leaf spring

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