22

2025

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07

Composite suspension assembly upgrade, leaf springs transform from single component to multi-functional assembly

The industry's R&D direction continues to upgrade. Traditional leaf springs are no longer limited to a single load-bearing elastic element, but are gradually integrating airbags, sensing modules.


The industry's R&D direction continues to upgrade. Traditional leaf springs are no longer limited to a single load-bearing elastic element, but are gradually integrating airbags, sensing modules, and guiding components to upgrade into an integrated composite suspension assembly, reshaping the chassis suspension system of commercial vehicles. In the past, a single leaf spring could only perform basic functions of load bearing and shock absorption, which could not meet the high-level requirements of new energy heavy trucks and high-end passenger vehicles for driving stability and intelligent control. The upgraded leaf spring composite suspension assembly integrates multiple functions such as load bearing and shock absorption, attitude adjustment, data acquisition, and intelligent control. It can dynamically adjust the suspension stiffness and vehicle height in conjunction with the airbags according to the vehicle's load status and driving conditions. Under full load driving conditions, this assembly can effectively reduce the vehicle's roll angle and improve cornering stability; under unloaded driving conditions, it can weaken the feeling of road bumps and optimize ride comfort. At the same time, the built-in sensing module can collect leaf spring stress data and suspension wear data in real time, and provide real-time warnings of potential faults such as component aging and overload deformation, helping maintenance personnel to complete inspection and maintenance in advance. The application of multi-functional leaf spring suspension assemblies is compatible with a variety of vehicle types, including new energy heavy trucks, long-distance passenger vehicles, and special engineering vehicles. This drives the leaf spring industry to transform from a single component manufacturer to a high-end assembly solution provider, expanding the industry's profit margins.