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MLS_3——170型采煤机液压牵引部的主油路是一个典型的变量泵一定量马达的闭式系统。改变斜轴式变量泵的摆角,就可以调整机器的牵引速度。 MLS_3——170型采煤机上变量泵缸体的摆角是由一套专门的液压伺服机构来控制的。机器牵引速度的手动操纵和各种自动控制环节均通过伺服机构对油泵的摆角进行调节。为此,液压伺眼机构在该机器里的作用是对各种调速信号进行功率放大,控制油泵的摆角并检测误差。所以,该液压伺服机构的性能对整机的动特性有很大的影响。在对EDW——170L型和MLS_2——170型采煤机牵引部液压伺服机构的实验室研究
MLS_3-170 shearer hydraulic traction of the main oil is a typical variable displacement pump motor a closed system. Change the tilt angle variable pump swing angle, you can adjust the machine’s traction speed. MLS_3-170 shearer variable pump cylinder swing angle is a set of specialized hydraulic servo to control. Manual traction machine speed control and a variety of automatic control aspects of the pump through the servo mechanism to adjust the swing angle. To this end, the role of hydraulic eye-wrestling mechanism in the machine is to power a variety of speed control signal, control the pump swing angle and detect the error. Therefore, the performance of the hydraulic servo system has a great impact on the dynamic characteristics of the machine. Laboratory Study on Hydraulic Servo Mechanism of Traction Department of Shearer of Model EDW - 170L and MLS_2 - 170