减压式先导阀手柄操纵角与触头位移关系计算及压盘结构优化

Calculation of Relationship of Handle Steering Angle and Contact Displacement of Depressurized Pilot Valve and Optimization of Platen Structure

提出减压式先导阀手柄操纵角与触头位移关系的精确算法,与目前用线性计算公式近似计算触头下降位移的方法进行比较,发现在小角度范围内,触头实际位移与线性计算结果基本相等,但角度变大后,两者误差越来越大。利用SolidWorks建立先导阀三维模型,模拟验证了精确算法的正确性。以提高减压式先导阀微调操控性能为目标,对先导阀压盘进行结构优化,从而补偿了手柄操纵角变大带来的误差,增大了手柄操纵角的线性使用范围。

An exact algorithm of relationship of handle steering angle and contact displacement of depressurized pilot valve was proposed. As compared with the method for approximately calculating the displacement of the contact with the linear formula at present, it was found that, in the small angle range, the actual displacement of the contact was basically equal to the linear calculation, but after the angle become larger, and the error was bigger and bigger. The three-dimensional （3D） model of pilot valve was established with SolidWorks, and the correctness of the exact algorithm was verified by simulations. In order to improve the fine tuning control perform-ance of the depressurized pilot valve, by optimized the structure of platen of pilot valve, the error caused by handle steering angle be-coming large is compensated, and the linear range of use of the handle steering angle is increased.