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1.故障现象河南万向系统制动器有限公司试验室的JF230液压综合试验台(吉林大学机电设备研究所研制)2009年底搬到新厂区后,在进行制动钳压力密封试验时,试验曲线出现异常。向制动钳施加试验压力,计算机示值与机械压力表示值一致,达到规定试验用压力后,关闭压力进管阀门,点击“开始”试验按钮进行密封试验,此时计算机显示值突然有0.4MPa左右的压力上升,而机械压力表示值没有变化。电脑屏幕的试验曲线突然向上跃动,然后相对稳定,直到试验结束。试验结束瞬间曲线又突然向下跃回,
1. Fault phenomenon Henan Wanxiang System Brake Co., Ltd. JF230 hydraulic test bed laboratory (Institute of Mechanical and Electrical Equipment, Jilin University) moved to the new plant by the end of 2009, during the brake caliper pressure seal test, the test curve abnormalities . Test pressure is applied to the brake caliper, the computer shows the value of the mechanical pressure that is consistent with the specified test pressure, close the pressure into the valve, click the “Start ” test button seal test, then the computer display value suddenly The pressure around 0.4MPa rises, while the mechanical pressure shows no change. The test curve of the computer screen suddenly jumped up and then remained relatively stable until the test was completed. The curve of the end of the experiment suddenly jumped back down,