该系统的核心是由两个阶梯轴构成的活塞和能使之正反方向交替工作的配油装置.由此实现的能量交换使执行元件获得了比其泵的额定排量大N倍的流量,反之比其泵所能承受的压力大N倍的压力值.这一功能的实现给液压系统带来如下改变:①去除液压系统中的快进装置和补油装置;②去除液压系统中的控制装置—阀组,该能量转换装置的输出量为多级,其相互切换是连续渐进的;③排除了滑阀式换向阀存在死区而造成换向时使油液瞬间断流所导致液压冲击;④该系统能方便地获得超高压力使油缸的作用面积成倍减小,重量也随之成倍减轻;⑤由编码器与液压马达组成的在线流量检测装置使系统构成闭环系统.%The core of the system is that the piston is composed of two stepped shafts an d oil distribution device can make alternately run-ning of positive and negative direction. The energy exchange makes it happen that actuator can get a rate of flow which is N times bigger than its pump's rated discharge capacity, and under a pressure value of N times greater than its pump, vice versa. The function can change the hydraulic system,specific as following items:①Removal in Fast forward device and oil filling device of hydraulic system.②Removal in valve group which is a control device of hydraulic system. The output of energy conversion device is multilevel,of which switching to each other is continuous.③Exclusion of hydraulic impact ,slide-valve reversing valve owns the existence of dead zone ,so it can cause of the in-stantaneous flow of oil when reversing,eventually it leads to hydraulic impact.④This system can easily get a super high pressure that makes action area of the cylinder is decreased by multiple duplication, and then the weight is multiplied reduced.⑤On-line flow detection device which is composed of encoders and hydraulic motors makes a closed-loop system.
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