Automotive Leaf Spring Fatigue Testing Machine
Category：Torsion Testing Machine
Introduction
The Automotive Leaf Spring Fatigue Testing Machine is a specialized testing system designed for fatigue performance evaluation of automotive leaf springs. It adopts a servo hydraulic loading system to perform static tests, dynamic tests, and fatigue life tests on automotive leaf springs.
Applications
Used for static, dynamic, stiffness, and fatigue life testing of automotive leaf springs. It is widely applied in automobile manufacturers, leaf spring production enterprises, research institutes, and quality inspection laboratories for performance evaluation and reliability testing of suspension springs.
Standards
The machine complies with the relevant requirements of JB3383 Automotive Leaf Spring Bench Test Method, JB523 Automotive Leaf Spring Technical Requirements, and QC/T 29035-91 Technical Conditions for Automotive Leaf Springs.
It can evaluate the performance of automotive leaf spring assemblies under specified conditions, including:
Measuring spring stiffness after pre-compression.
Measuring load at a preset arc height.
Measuring arc height under a preset load.
Performing fatigue life tests under specified stress conditions.
Main Technical Specifications
| Item | Technical Parameters |
|---|---|
| Product Name | Automotive Leaf Spring Fatigue Testing Machine |
| Test Force | 300 kN |
| Rated Dynamic and Static Load | ±300 kN |
| Load Measurement Accuracy | ±0.5% F.S |
| Rated Actuator Displacement | 300 mm |
| Displacement Measurement Accuracy | ±0.5% F.S |
| Maximum Actuator Amplitude | ±80 mm |
| Working Frequency Range | 0.1–8 Hz (Adjustable); Amplitude up to ±80 mm at 1 Hz, up to ±25 mm at 3 Hz |
| Crosshead Moving Range | ≥300 mm |
| Counter Capacity | 9.999.999 cycles; with panel preset and reset functions, automatic stop when preset cycles are reached |
Main Features
Consists of a main testing system, hydraulic system, servo control system, electrical control system, and computer data processing system.
Adopts a four-column frame structure with high rigidity, strong strength, and wide application range.
The upper crossbeam is equipped with a lifting mechanism, allowing convenient adjustment of test height for different specimens.
Four columns are fixed on the test platform, which is designed with sliding grooves for easy movement and positioning of test fixtures.
Servo actuator is installed on the movable crossbeam to provide precise loading control.
Computer-controlled system enables automatic test operation, data acquisition, and analysis.
Equipped with multiple safety protection functions, including:
Hydraulic source over-pressure protection.
Oil temperature interlock protection.
Counter preset value interlock protection.
Load and displacement upper/lower limit protection.
Motor over-current protection.
Safety protection system for reliable operation.
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