Fault switching method for main ventilator for mine hoisting

The invention discloses a fault switching method for a main ventilator for mine hoisting. The method comprises the steps that when the temperature of at least one phase of a three-phase winding of a motor in a currently-running fan reaches a first preset fault range and/or the temperature of a driving shaft of the motor reaches a second preset fault range and/or the temperature of a non-driving end bearing of the motor reaches the second preset fault range, a motor fault automatic switching point position is triggered, and the currently-running fan executes a fault automatic switching action and is switched to a corresponding standby fan for running. The fault switching method for the main ventilator has the advantages that the reliability is high, and the mine safety is guaranteed. 本发明公开了一种矿井提升主通风机故障切换方法，所述方法包括：当前运行的风机中电机三相绕组中至少一相的温度达到第一预设故障范围和/或所述电机的驱动轴温度达到第二预设故障范围和/或所述电机的非驱动端轴承温度达到所述第二预设故障范围时，电机故障自动切换点位触发，当前运行的风机执行故障自动切换动作，切换到其对应的备用风机运行；本发明的优点在于：提供一种可靠性强的主通风机故障切换方法，保障矿井安全。