Abstract
The paper presents the results of surface-based experimental investigations conducted on a self-propelled electric mining machine powered by a battery pack. The aim of the research was to determine the values of dynamic surpluses occurring during operations and assess the effectiveness of the hydraulic accumulator in the lifting actuator of the operating system. The measurements were performed using three methods: strain gauges, accelerometers, and pressure transducers. Understanding the values of dynamic loads is particularly important as they have a decisive impact on the fatigue durability of the chassis and working system. Typically, pressure is measured in the lifting system (measurement conducted at the hydraulic accumulator). However, the authors have demonstrated that the measurement conducted using the existing pressure transducers on the machine is insufficient and underestimates the values of dynamic loads.
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