Fuzzy Reliability Analysis and Optimization Design of Hydraulic System of Bale Carrier for Tie Arm Device

Pei Chenghui,Liu Xingyan,Liu Zhigang,Zhang Tong,Li Guoliang

Table 1 Tie arm device subsystem parameters

Parameters Unit Value Fuel flow L/min 35 Safety valve opening pressure MPa 10 Hydraulic oil temperature Degc 40 Hydraulic oil density kg/m3 850 Directional valve to open the current Ma 200 Directional valve natural frequency Hz 50 Gain signal 1 value 10 Gain signal 2 value 250 Control valve core displacement limit M ±0.0045 Control spool damping N/m/s 1000 Conical valve taper Degree 60 One-way valve core quality kg 0.068 Check valve limit displacement M ±0.00628 One-way valve core spring stiffness N/mm 130 Horizontal push cylinder piston rod diameter mm 56 Horizontal push hydraulic cylinder diameter mm 80 Displacement sensor output signal gain 1/m 10