对液压支架侧推机构侧护板用的弹簧力、侧护板千斤顶开启压力进行了计算,分析液压支架侧护板不弹的原因;计算侧护板千斤顶力矩,分析液压支架侧护板收回不同步蹩卡原因。 The spring force of the side guard of the side bracket of the hydraulic bracket and the cracking pressure of the side plate jack were calculated to analyze the reasons for the side shell plate not being bombled; the jack moment of the side bracket was calculated, and the recovery of the side bracket of the hydraulic bracket was analyzed Sync the bad card reason.