【摘要】 调速阀在液压系统中有着十分重要的地位。针对传统调速回路中，某些机床要求工作行程有两种进给速度，需将两个调速阀串联或并联，存在能量损失较大及工作部件前冲等问题。基于传统调速阀设计出一种具有换向功能的调速阀模型，利用AMESim仿真软件分析其静态及动态特性，与传统调速阀串并联进行比较，同时，分析不同参数对其具有换向功能的调速阀性能的影响。结果表明：与传统调速阀串并联相比，该调速阀的流量波动较为平缓，反应速度快，静动态特性优于传统调速阀。增大阀芯质量对该阀无较大影响；适当增大预紧力及减小弹簧刚度能有效增加该调速阀的响应速度及精度，在满足实际需求的条件下，应选择较大的预紧力及较小的弹簧刚度。更多还原

【Abstract】 Speed control valves play a very important role in hydraulic system. For the traditional speed control circuit, some machine tools require two feed speeds for the working stroke, which requires two speed control valves to be connected in series or parallel, and there are problems such as large energy loss and forward stroke of the working parts. Based on the traditional speed control valve design, this paper designs a speed control valve model with reversing function by designing a commutation throttle spool. The AMESim simulation software was used to analyze its static and dynamic characteristics, compare with the traditional speed control valve series and parallel, and analyze the influence of different parameters on the performance of the speed control valve with reversing function. The results show that compared with the traditional speed control valve in series and parallel, the flow fluctuation of the speed control valve is relatively smooth, the response speed is fast, and the static and dynamic characteristics are better than those of the traditional speed control valve. Increasing the quality of the spool has no great effect on the valve; appropriately increasing the preload and reducing the spring rate can effectively increase the response speed and accuracy of the speed control valve, and under the condition of meeting the actual demand, the larger preload force and the smaller spring rate should be selected.更多还原