力士樂負(fù)載敏感閥講解

1、Beijing Road-Hydraulic System Technology Co.,Ltd. 1負(fù)載敏感閥講解及應(yīng)用案例負(fù)載敏感閥講解及應(yīng)用案例 喬曉斌2010-07-26負(fù)載敏感閥負(fù)載敏感閥Beijing Road-Hydraulic System Technology Co.,Ltd. 2國(guó)外生產(chǎn)負(fù)載敏感閥公司國(guó)外生產(chǎn)負(fù)載敏感閥公司Hydraulics M4-12 CompetitionBeijing Road-Hydraulic System Technology Co.,Ltd. 3國(guó)外生產(chǎn)負(fù)載敏感閥性能比較國(guó)外生產(chǎn)負(fù)載敏感閥性能比較M4-12 CompetitionBeijin

2、g Road-Hydraulic System Technology Co.,Ltd. 4液壓系統(tǒng)控制 閥式系統(tǒng)節(jié)流控制負(fù)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(diǎn)換向平穩(wěn) 無沖擊微調(diào)特性好結(jié)構(gòu)簡(jiǎn)單 成本低流量受負(fù)載 進(jìn)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(yīng)用小功率傳動(dòng)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-

3、Hydraulic System Technology Co.,Ltd. 7負(fù)荷敏感多路換向閥負(fù)荷敏感多路換向閥特點(diǎn)負(fù)荷敏感控制 系統(tǒng)節(jié)能多個(gè)執(zhí)行結(jié)構(gòu)同時(shí)動(dòng)作，流量與負(fù)載無關(guān)每個(gè)閥芯可單獨(dú)設(shè)置流量 壓力微調(diào)性能好當(dāng)系統(tǒng)出現(xiàn)流量不飽和時(shí)（泵供給的流量小于同時(shí)工作的執(zhí)行結(jié)構(gòu)所需流量），大負(fù)載執(zhí)行結(jié)構(gòu)流量先減少。不能實(shí)現(xiàn)執(zhí)行機(jī)構(gòu)的同步操作要求。Beijing Road-Hydraulic System Technology Co.,Ltd. 8負(fù)載傳感控制原理一負(fù)載傳感控制原理一A1A2Beijing Road-Hydraulic System Technology Co.,Ltd. 9負(fù)載傳感控制

4、原理二負(fù)載傳感控制原理二Beijing Road-Hydraulic System Technology Co.,Ltd. 10負(fù)載傳感控制原理三負(fù)載傳感控制原理三壓力截?cái)?DR負(fù)荷傳感 FR M4 /SB 多路閥X - portA10VO 31DRFRBeijing Road-Hydraulic System Technology Co.,Ltd. 11負(fù)載傳感控制原理四負(fù)載傳感控制原理四LRDS負(fù)荷傳感FR(el. / hydr. remote control) 壓力截?cái)郉R功率調(diào)節(jié)LR(el./hydr. remote control) M4, M7 多路閥DporificeBeijin

5、g Road-Hydraulic System Technology Co.,Ltd. 12流量分配控制流量分配控制負(fù)荷敏感多路閥在流量不飽和狀態(tài)下，流量的分配會(huì)受執(zhí)行機(jī)構(gòu)的負(fù)荷影響，大負(fù)荷的執(zhí)行機(jī)構(gòu)將降低速度，甚至停止運(yùn)動(dòng)。這樣，執(zhí)行機(jī)構(gòu)的運(yùn)動(dòng)將不能與指令信號(hào)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(bǔ)償方式，形成了與壓力無關(guān)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(fù)載

6、敏感閥負(fù)載敏感閥M4閥體結(jié)構(gòu)閥體結(jié)構(gòu)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

7、 System Technology 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(jié)構(gòu)工作聯(lián)結(jié)構(gòu)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)B

8、eijing Road-Hydraulic 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(fù)載敏感控制負(fù)載敏感控制ATXYBPTMBMAFA, DpDp ControlBeijing Road-Hydraulic System Technology Co.,Ltd. M4 系統(tǒng)沖擊保護(hù)閥18ATXYBPTMBMABeijing Road-Hydraulic System Technology Co.,Ltd. 19M4 用防吸空閥補(bǔ)油ATXYBPTMBMABeijing Road-Hydraulic System Technology Co.,Ltd. 力士樂負(fù)載敏感閥種類力士樂負(fù)載敏感閥種類20Directional valves - Load SensingSizeSP081660l/mingpmM4-1213035M4-15-2x18048M4-224