Technical Paper
Pantograph Optimization Design Based on Coupling Model of “Road-Mine Truck-Pantograph Catenary” System
2024-04-09
2024-01-2318
This study focuses on the operation of trolley-assisted mining trucks, which leverage overhead lines for uphill propulsion, substantially reducing both fuel consumption and carbon emissions. The pantograph mounted at the truck body's front end exhibits complex vibrational behavior due to the road base stiffness and the nonlinearities of the hydro-pneumatic suspension. Vertical dynamic model of the mining truck is constructed which considering the road conditions and suspension characteristics to illustrate the pantograph's contact force. The vibration characteristic of pantograph base is analyzed which using the spatial transformation relationship between the truck's center mass of gravity and the base of pantograph. Stiffness and damping of pantograph are optimized based on a pantograph-catenary system model considering different road conditions, driving speeds and pantograph structure. The real mining truck is modeled in the Trucksim software.