Structure and Introduction of the leaf spring

The smallest metal leaf spring weighs more than ten kilograms, and the large one can reach hundreds of kilograms. In the past, leaf springs required workers to move around in various production processes, which was labor-intensive and prone to work-related accidents. Now, with the cooperation of mechanical arms, conveyor belts, etc., the cumbersome leaf spring can very lightly complete the movements such as flashing and moving. The labor intensity of the post is greatly reduced, and the production efficiency is greatly improved.

The following is a list of contents

Advantage

Leaf springs related information

Advantage

A composite leaf spring can replace a set of metal leaf springs, and the weight reduction effect on the car is very obvious. The weight of composite leaf springs is 72%-83% lower than that of leaf springs, and under vertical load the fatigue life is 5 times that of steel, which can effectively improve the smoothness of the product by about 30%, and the durability can reach 2 to 5 times that of steel multi-leaf leaf springs. In addition, composite leaf springs have obvious advantages in terms of safety in use - as the service life approaches, metal leaf springs may break suddenly, while composite leaf springs will only fall off layer by layer, thus playing a "failure protection" role .

After rough calculation, after the composite leaf spring replaces the metal leaf spring, the weight of each vehicle (heavy truck) can be reduced by about 280 kilograms, the fuel consumption can be reduced by about 2240 liters per year, and the carbon dioxide emission can be reduced by about 5600 kilograms.

Leaf springs related information

Leaf springs are the simplest and most commonly used load-bearing components in commercial vehicle suspension structures. Even though many models are currently equipped with air suspensions, leaf springs are still used on the front axle of their vehicles. Usually, everyone's perception of leaf springs is multi-leaf springs and few-leaf springs. Multi-leaf springs have strong bearing capacity, and the cab is too bumpy when the vehicle is running without load; less-leaf springs are lighter in weight and better in damping. In fact, in addition to the quantity, there is a lot of knowledge in the leaf spring. This article will introduce some knowledge of the leaf spring that you do not know, to discuss the future development trend of the leaf spring.

Single leaf spring. As long as the "single leaf spring" is mentioned, the first reaction of many people is the safety issue. Once the car breaks, the car will be destroyed. In fact, the single-leaf spring has been used in Europe for many years. For example, the front axle of the MANTGX tractor has always used the single-leaf spring, and the rear axle of the DAF medium truck also uses the single-leaf spring, and its vibration reduction effect is equivalent to that of the air suspension. Major European commercial vehicle companies have fully considered the safety issues after fracture when designing and applying single-leaf springs. The secret is to make an S-bend at the rear end of the single-leaf spring. The thickness of this S-bend is about 10% thinner than other positions, and it is the weakest point of the entire leaf spring. Once a break occurs, it must be this position.