本文所敘述的500kN 液壓拉力試驗機是應用于電力系統(tǒng)的輸變電建設中, 是一個典型的機電液一體化設備, 它包含了拉伸機構(gòu)、液壓系統(tǒng)、拉力傳感器及計算機控制系統(tǒng)。針對拉力試驗機的特殊工況要求, 及原設備存在的缺點和不足, 重點對其液壓系統(tǒng)進行了更新和改造, 同時對軟件的控制算法作了相應的修改。改造后的拉力試驗機具有操作方便、安全可靠的優(yōu)點。
關鍵詞: 拉力試驗機; 電液比例閥; 拉力傳感器; 保壓回路
Abstract : The 500kN hydraulic pulling force testing machine discussed in this paper is used in power transmisson constructions1It is a typical machine - electric - hydraulic equipment , containing drawing device , hydraulic system , pulling force sensor and computer control system1 In viewof the special operating mode and the shortcommings of the former equipment , emphasis is put on improvement of the hydraulic system , at the same2
time , relevant modifications are made in the control algorithm1 The improved pulling force test machine is convenient and safe to operate1
Keywords : Pulling force test machine ; Electric - hydraulic propotional valve ; Pulling force sensor ; Pressure maintaining system