負載敏感閥講解及應用案例

1、Beijing Road-Hydraulic System Technology Co.,Ltd. 1負載敏感閥講解及應用案例負載敏感閥講解及應用案例負載敏感閥負載敏感閥Beijing Road-Hydraulic System Technology Co.,Ltd. 2國外生產(chǎn)負載敏感閥公司國外生產(chǎn)負載敏感閥公司Hydraulics M4-12 CompetitionBeijing Road-Hydraulic System Technology Co.,Ltd. 3國外生產(chǎn)負載敏感閥性能比較國外生產(chǎn)負載敏感閥性能比較M4-12 CompetitionBeijing Road-Hydraul

2、ic System Technology Co.,Ltd. 4液壓系統(tǒng)控制 閥式系統(tǒng)節(jié)流控制負荷傳感控制(LS)流量分配控制(LUDV)Beijing Road-Hydraulic System Technology Co.,Ltd. 5節(jié)流控制節(jié)流控制節(jié)流型多路換向閥的特點換向平穩(wěn) 無沖擊微調(diào)特性好結構簡單 成本低流量受負載 進口壓力影響大壓力損失大，片數(shù)越多 流量越大 壓力損失越大應用小功率傳動無需調(diào)速控制的系統(tǒng)Beijing Road-Hydraulic System Technology Co.,Ltd. 節(jié)流控制原理節(jié)流控制原理6Beijing Road-Hydraulic Syst

3、em Technology Co.,Ltd. 7負荷敏感多路換向閥負荷敏感多路換向閥特點負荷敏感控制 系統(tǒng)節(jié)能多個執(zhí)行結構同時動作，流量與負載無關每個閥芯可單獨設置流量 壓力微調(diào)性能好當系統(tǒng)出現(xiàn)流量不飽和時（泵供給的流量小于同時工作的執(zhí)行結構所需流量），大負載執(zhí)行結構流量先減少。不能實現(xiàn)執(zhí)行機構的同步操作要求。Beijing Road-Hydraulic System Technology Co.,Ltd. 8負載傳感控制原理一負載傳感控制原理一A1A2Beijing Road-Hydraulic System Technology Co.,Ltd. 9負載傳感控制原理二負載傳感控制原理二Be

4、ijing Road-Hydraulic System Technology Co.,Ltd. 10負載傳感控制原理三負載傳感控制原理三壓力截斷 DR負荷傳感 FR M4 /SB 多路閥X - portA10VO 31DRFRBeijing Road-Hydraulic System Technology Co.,Ltd. 11負載傳感控制原理四負載傳感控制原理四LRDS負荷傳感FR(el. / hydr. remote control) 壓力截斷DR功率調(diào)節(jié)LR(el./hydr. remote control) M4, M7 多路閥DporificeBeijing Road-Hydraul

5、ic System Technology Co.,Ltd. 12流量分配控制流量分配控制負荷敏感多路閥在流量不飽和狀態(tài)下，流量的分配會受執(zhí)行機構的負荷影響，大負荷的執(zhí)行機構將降低速度，甚至停止運動。這樣，執(zhí)行機構的運動將不能與指令信號同步，系統(tǒng)操控性差。為了改善閥的操控性能，我們改變閥的壓力補償方式，形成了與壓力無關的流量分配閥。Beijing Road-Hydraulic System Technology Co.,Ltd. 13流量分配控制原理流量分配控制原理Beijing Road-Hydraulic System Technology Co.,Ltd. 負載敏感閥負載敏感閥M4閥體結構

6、閥體結構14El.-prop. Pressure LimitationEnd Coverint. pilot oil supplyext. pilot oil supplystandardPilot Cover (A)electrohydraulicw/ integrated electronicsInlet ElementshydraulicClosed Center mid-inletClosed Center mid-inletwith PriorityEnd Coverw/ power beyondstandardBeijing Road-Hydraulic System Techno

7、logy Co.,Ltd. A10VO系列控制型式系列控制型式Deckel BDeckel A力士樂敏感閥力士樂敏感閥M4工作聯(lián)結構工作聯(lián)結構Pilot Cover Bw/ Stroke LimiterMain Spool 18(interchangeable)Shock / Anti Cav.Valve El.-Hydr. Pilot Valves w/ Deutsch or AMPConnectorLoad CheckFunctionPressure CompensatorLS-CheckValveLS-Pressure Relief Valves (A/B)Beijing Road-Hy

8、draulic System Technology Co.,Ltd. M4 流量調(diào)節(jié)16Pp (pressure Compensator)1 shim: 152 psi 10,5 bar2 shims: 174 psi 12 bar0 shim: 130 psi 9 barNumber of shimsBeijing Road-Hydraulic System Technology Co.,Ltd. 17LS負載敏感控制負載敏感控制ATXYBPTMBMAFA, DpDp ControlBeijing Road-Hydraulic System Technology Co.,Ltd. M4 系統(tǒng)沖擊保護閥18ATXYBPTMBMABeijing Road-Hydraulic System Technology Co.,Ltd. 19M4 用防吸空閥補油ATXYBPTMBMABeijing Road-Hydraulic System Technology Co.,Ltd. 力士樂負載敏感閥種類力士樂負載敏感閥種類20Directional valves - Load SensingSizeSP081660l/mingpmM4-1213035M4-15-2x18048M4-22400