Maintenance Strategy Based on Reliability Analysis and FMEA: A Case Study for Hydraulic Cylinders of Traditional Excavators with ERRS

Figure 1

The schematic principle of HE with ERRS. 1: pump; 2: engine; 3: relief valve; 4: throttle valve; 5: oil tank; 6, 7, 11, and 12: reversing valves; 8: hydraulic accumulator; 9: balance cylinders; and 10: boom cylinder.