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本文介绍一种液压压下系统的物理模拟装置,在此装置可进行多种控制功能和工艺参数的实验。该液压压下实验装置包括两个液压缸,彼此重迭,安置在一个封闭框架中,当任意一个液压缸进油或排油时,则另一个液压缸的油压以及封闭框架内应力均发生变化。其中一个油缸模拟轧机压下油缸的运动,另一个油缸模拟轧制力的变化,封闭框架则相当于轧机机架。通过与轧机相似的电气控制系统,实验装置压下油缸的运动在稳态时与轧机是相同的,而动态过程仍有差别,是采用计算机仿真的方法,寻找实验装置与轧机的压下油缸在动态过程中的差别。根据实验装置所得结果,在推算实际轧机液压压下系统动态性能时,可以作为修正和参考。
This article presents a physical simulation of hydraulic press system, in which a variety of control functions and process parameters can be experimented. The hydraulic depressing experimental device comprises two hydraulic cylinders which are overlapped with each other and arranged in a closed frame. When either one of the hydraulic cylinders is in oil or discharged, the hydraulic pressure in the other hydraulic cylinder and the stress in the closed frame both occur Variety. One of the cylinders simulates the movement of the rolling mill and the other simulates the variation of the rolling force. The closed frame is equivalent to the rolling stand. Through the electrical control system similar to that of the rolling mill, the movement of the experimental device for depressing the cylinder is the same as that of the rolling mill in the steady state, but there is still a difference in the dynamic process. The method of computer simulation is used to find the experimental device and the rolling mill depressing cylinder Dynamic process of difference. According to the results of the experimental setup, it can be used as a correction and reference when calculating the dynamic performance of the actual rolling mill hydraulic pressure system.