论文部分内容阅读
两台2000年从德国购进的ABG423型摊铺机,经过几年使用后发现,夏季在摊铺沥青面层时,常出现液压油温度过高的现象,因而降低了机器的使用效率,影响了工程进度。 摊铺机液压系统油温一般应控制在30～55℃之间,油温过高,会使油液粘度降低,泄漏量增加,各润滑部位的油膜被破坏,加剧了零部件的磨损;油温过高还会引起材料热膨胀,使不同材料运动副之间的间隙发生变化,造成动作不灵或“卡死”现象。同时,高温还能使橡胶、尼龙等密封件和软管早期老化而失效。因此,控制温升对液压系统的正常工作非常重要。
Two ABG423 pavers purchased from Germany in 2000, after several years of use, found that the phenomenon of overheating of the hydraulic oil often occurs when paving the asphalt surface in summer, thus reducing the efficiency of the machine and affecting The progress of the project. Paver hydraulic system temperature should generally be controlled between 30 ~ 55 ℃, the oil temperature is too high, will reduce the viscosity of the oil, the leakage increased, the lubricating oil film is destroyed, exacerbating the wear and tear of parts; oil Excessive temperatures can also cause thermal expansion of the material, causing gaps in the movement of the different materials to change, resulting in an inoperable or “stuck” phenomenon. At the same time, high temperature can make rubber, nylon and other seals and hoses early aging failure. Therefore, controlling the temperature rise is very important to the normal operation of the hydraulic system.