论文部分内容阅读
我厂原使用的YB82-300型四柱万能液压机,才使用一个月,高压行程速度减缓,上压慢,甚至不上压,充液桶内有响声。经检查,主油缸上的充液阀底面与主油缸的接触密封面出现泄漏。更换破裂的密封垫后,仅使用一个月又出现上述现象。经分析,主要是静密封面结构不太理想,它采用法兰平面沟槽密封面结构(如图改进前),在工作过程中,受到冲击振动,法兰紧固螺栓上螺母逐渐松动,密封面出现间隙,主缸内压力油外挤,冲破密封垫而产生泄漏。我们将充液阀底平面与沟槽接触部
I used to plant the original YB82-300 four-cylinder universal hydraulic press, only use a month, high-pressure travel slow down, the pressure on the slow, not even pressure, there is a noise in the filling tank. Upon examination, the main fuel tank on the bottom surface of the filling valve and the main cylinder of the sealing surface of the leak. After replacing the ruptured seal, the above phenomenon occurs again in only one month. The analysis is mainly static seal cover structure is not ideal, it uses the flange plane groove sealing surface structure (as shown before the improvement), in the course of work, by the impact of vibration, flange fastening bolts nut loose, seal The surface of the gap, the pressure of the main cylinder outside the squeeze, breaking the gasket and leaks. We will fill the valve bottom plane with the groove contact