登車(chē)橋http://www.lilacred.com/雙泵供油的疾速運(yùn)動(dòng)回路為雙泵供油的疾速運(yùn)動(dòng)回路，高壓小流量泵 的流量應(yīng)略大于最大工進(jìn)速度所需要的流量，作業(yè)壓力由溢流閥調(diào)定。登車(chē)橋低壓大流量泵與泵的流量之和應(yīng)等于液壓體系疾速運(yùn)動(dòng)所需要的流量，其作業(yè)壓力應(yīng)低于液控次序閥的調(diào)定壓力。液控次序閥的調(diào)定壓力應(yīng)比疾速運(yùn)動(dòng)時(shí)的最高作業(yè)壓力高0.5 -- 0.8MPa。
Ramps double pumps the rapid movement of the loop for the double pump oil fast motion loops, high pressure low flow pump flow should be slightly larger than the maximum flow rate required to work into the job by the pressure relief valve setting. Ramps flow of low pressure high flow pump and pump and hydraulic system should be equal to the required rapid movement of traffic, its operating pressure should be lower than the set pressure of the hydraulic control valve order. Set pressure of the hydraulic control valve should be higher order than the highest operating pressure of rapid movement of 0.5 - 0.8MPa.

登車(chē)橋http://www.lilacred.com/疾速運(yùn)動(dòng)時(shí)，因?yàn)樨?fù)載小，體系壓力較低，閥封閉，泵輸出的油液經(jīng)單向閥與泵I輸出的油液聚集在一起進(jìn)人液壓缸，然后完成疾速運(yùn)動(dòng)；作業(yè)進(jìn)給時(shí)，負(fù)載較大，體系壓力升高至大于閥的調(diào)定壓力，閥翻開(kāi)，單向閥封閉，泵卸荷，此刻 體系僅由泵I供油，完成慢速作業(yè)進(jìn)給。這種回路功率使用合理，效率高。但回路較復(fù)雜，本錢(qián)較高，適用于快、慢速差值較大的液壓體系。
Ramps when fast motion, because the load is small, low system pressure, the valve closed, the pump output of oil through the check valve and the pump I output the oil into the cylinders together, and then complete the fast movement;when the job feed, load a larger system pressure increases to the set pressure is greater than the valve, the valve open, the check valve closed, pump unloading system at the moment only the oil from the pump I, completed the slow job feed. This loop power use reasonable and efficient. However, the circuit is more complex, higher costs for fast, slow the larger the difference between the hydraulic system.