拔长工艺中锻造操作机液压系统能耗分析

摘要

扩展了锻造操作机整机的能量流模型和能耗计算模型,研究了拔长工艺下锻造操作机液压系统的控制特性和能耗特性,得出了液压系统的能耗分布规律,分析了能量浪费的关键环节,为锻造操作机液压控制系统的优化以及节能控制方法的提出提供指导.研究结果表明,锻造操作机液压系统的能耗特性具有如下特点:夹钳上升和旋转动作的能量传递效率较高,均可达60％以上;大车行走动作的能量传递效率仅为17％;夹钳下降时重力势能几乎全部转化为升降控制阀的节流损失;多执行器不同负载与单压力源不能合理匹配会造成巨大的节流损失.%For the purposes of providing guidance for optimization of hydraulic control systems and energy saving control methods for forging manipulators, the model of energy flow and calculation model of energy for forging manipulators were extended, and the control characteristics and energy dissipation characteristics of forging manipulator hydraulic systems were analyzed under stretching processes.The distribution laws of energy dissipation in hydraulic systems were found out, and the key points of low energy efficiency were analyzed.The results show that the energy dissipation characteristics of the forging manipulator hydraulic systems have following features.The energy transfer efficiency of clamp lifting and rotation may be higher than 60％.The energy transfer efficiency of walking motion of cart is only 17％.When the clamp drops, the gravitational potential energy is almost converted to the throttling losses of the lift control valves.If single system pressure driving mode does not match different loads of multi actuator reasonably, there will be huge throttling losses.