## 1 Introduction
Global mining truck manufacturers have also actively pursued technological innovations, exploring various approaches to innovate and enhance the structural design of mining trucks to improve overall performance. The Liebherr Group, in its 600-ton mining truck, employs a double-wishbone front suspension and a multi-link rear suspension, significantly reducing the lateral forces experienced by the wheels. Various configurations are implemented to minimize tire wear, maximizing the lifespan of the tires to the greatest extent possible [7]. In recent years, scholars in the field have gradually shifted their research focus towards enhancing the handling stability and ride comfort of mining dump trucks. [PERSON] et al. [8; 9] applied the quasi-zero stiffness isolator to the vibration isolation of the car, established a vehicle-seat-human coupling dynamics model, and studied the impact excitation and random excitation of the model. The dynamic characteristics of the vehicle have effectively improved the vibration comfort of the vehicle. To meet the increasingly higher demands for vibration comfort, active vibration control [10] technology has begun to be applied in vehicle damping, including both active and semi-active suspension technologies. [PERSON] et al. [11] transformed the base between the cabin floor and the seat into a particle damper, establishing a discrete element model for the damper to analyze and determine the optimal solution. They successfully reduced the vibrations in the mining dump truck's cabin, thereby improving vibration comfort. [PERSON] et al. [12] proposed a hydraulic interconnected suspension system based on energy regenerative shock absorbers to simultaneously enhance ride comfort, traction capability, and energy recovery potential. They established a seven-degree-of-freedom whole-vehiclesuspension model for modeling and driving analysis. The results indicate that the new suspension system can attenuate vibrations, maintaining excellent ride comfort. [PERSON] (2018) improved vehicle ride comfort and stability by optimizing the parameters of the oil and gas suspension. Subsequently, they built a comprehensive vehicle model to analyze the vehicle's performance. Proper suspension design is more crucial for heavy-duty vehicles than for passenger cars due to their different dynamic behaviors ([PERSON], 2018; [PERSON], 2018). Due to the interdependencies among various performance parameters of suspension systems, to avoid situations where improving one performance aspect leads to a decline in others, multi-objective optimization should be conducted to determine design solutions that simultaneously optimize all performance indicators ([PERSON], 2018; [PERSON], 2018). Additionally, accurate analysis of heavy-duty vehicle behavior, considering pitch and roll effects, requires a comprehensive vehicle model to achieve optimal suspension design. In recent years, scholars in the field have primarily focused on active vibration control technology, optimization of oil and gas springs, and cabin damping for the suspension system of mining dump trucks. This research aims to enhance the handling stability and ride comfort of dump trucks. However, there is relatively limited research on the application of double-wishbone suspension in mining dump trucks; therefore, it is essential to modify, validate, analyze, and optimize the front suspension of a 300-ton-class mining dump truck. Subsequently, conducting a comprehensive comparison with actual data for the entire vehicle becomes necessary. This paper focuses on optimizing specific spatial parameters of the double-wishbone front suspension to enhance suspension performance, with noticeable effects. The modified vehicle's ride comfort is then compared with experimental data to validate the improvement in ride comfort.