在液压阀中,阀口起着严密封油的作用,其加工质量的好坏直接影响着主阀的性能。如双向液压锁,在支撑起重机的支腿缸回路中,不得有极微小的渗漏,否则就会出现软腿现象。 阀口的结构较多,图1a、图1b为两种不同型式的锥式结构、图2为钢球式结构、图3为软硬复合式结构。从使用性能分析,钢球式结 In the hydraulic valve, the valve port plays the role of a tight seal oil, the quality of its processing directly affects the performance of the main valve. Such as two-way hydraulic lock, legs in support of the crane cylinder circuit, there must be minimal leakage, otherwise it will appear soft leg phenomenon. The valve port structure more, Figure 1a, Figure 1b two different types of cone structure, Figure 2 is a ball-type structure, Figure 3 for the hard and soft composite structure. From the use of performance analysis, ball-type knot