起重机,挖掘机等建筑工程机械上普遍地使用平衡阀以克服超越负载。主机要求:1.平衡阀的闭锁性能好。特别是应用于变幅系统时,不应因渗漏而造成吊臂下滑。2.降低平衡阀的控制压力以节省能量。3.平衡阀的正向压力损失小。4.重量轻,节省钢材。为此长沙建筑机械研究所与武陵液压件厂研制成功了一种新型平衡阀,其特点是闭锁性能好,控制压力低,正向压力损 Balanced valves are commonly used on construction machinery such as cranes and excavators to overcome overrunning loads. Host requirements: 1. The balancing valve has good locking performance. Especially when applied to a luffing system, the boom should not be slipped due to leakage. 2. Lower the balance valve control pressure to save energy. 3. The balance valve has a small forward pressure loss. 4. Light weight, saving steel. For this reason, a new balance valve was successfully developed by Changsha Construction Machinery Research Institute and Wuling Hydraulic Parts Factory. Its characteristics are good locking performance, low control pressure, and positive pressure loss.