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３５３Ｅ型地下凿岩台车是阿特拉斯公司生产的新型全液压地下凿岩台车，所配凿岩机为１２３８ＭＥ型，其液压控制系统为ＤＣＳ１２型。该控制系统推进部分的液压回路如附图所示，其工作原理为： （１）若来自凿岩机换向阀的压力油流至Ａ处时，则推进系统的压力由溢流阀３Ａ来控
The Model 353E underground rock drilling rig is a new type of full hydraulic underground rock drilling rig manufactured by Atlas. The rock drilling rig is equipped with a 1238ME rock drilling machine and the hydraulic control system is a DCS12 type. The hydraulic system of the propulsion part of the control system is as shown in the figure. The working principle is as follows: (1) If the pressure oil flow from the rock drill valve is at A, then the pressure of the propulsion system is controlled by the relief valve 3A