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我厂从国外引进的一台150t冲床,内有超载保护离合器装置。冲床起动时,先接通压缩空气以驱动一个气动油泵,油泵即向该装置输入压力油使之接合,过载时则可断开。当油压达到一定数值时,气动油泵自动停止,压力开关接通,同时机床电路接通,如此冲床方能正式工作。但不久前,气动油泵安装处有油渗出,且较严重。我们分析估计是密封垫损坏,于是决定更换密封垫,为此便先将油泵拆下。不料油泵刚一拆下,油液便
I plant imported from abroad a 150t punch, overload protection clutch device. Punch start, first connected to the compressed air to drive a pneumatic pump, the pump that pressure oil to the device to join, overload can be disconnected. When the hydraulic pressure reaches a certain value, the pneumatic pump automatically stops, the pressure switch is turned on, while the machine circuit is connected, so the punch can only formally work. But not too long ago, the oil pump at the installation of oil exudation, and more serious. Our analysis estimated that the gasket damage, so decided to replace the gasket, this will be the first pump removed. Unexpectedly, just remove the oil pump, oil will be