力士乐负载敏感阀讲解

BeijingRoad-HydraulicSystemTechnologyCo.,Ltd.1负载敏感阀讲解及应用案例乔晓斌2010-07-26负载敏感阀BeijingRoad-HydraulicSystemTechnologyCo.,Ltd.2国外生产负载敏感阀公司HydraulicsM4-12CompetitionBeijingRoad-HydraulicSystemTechnologyCo.,Ltd.3国外生产负载敏感阀性能比较M4-12Competition400barVersionadjustableΔpStandard(Lever,hydr.er.hydr.)CAN-BuseasytomaintenanceWorldwideServiceM4-12✔✔✔✔✔✔PVG32✔✔✔ParkerVoacL90✔✔✔ParkerApitechVPL✔✔✔HAWEPSV✔✔阀的功能控制性能BeijingRoad-HydraulicSystemTechnologyCo.,Ltd.4液压系统控制–阀式系统节流控制负荷传感控制(LS)流量分配控制(LUDV)BeijingRoad-HydraulicSystemTechnologyCo.,Ltd.5节流控制节流型多路换向阀的特点换向平稳无冲击微调特性好结构简单成本低流量受负载进口压力影响大压力损失大，片数越多流量越大压力损失越大应用小功率传动无需调速控制的系统BeijingRoad-HydraulicSystemTechnologyCo.,Ltd.节流控制原理6BeijingRoad-HydraulicSystemTechnologyCo.,Ltd.7负荷敏感多路换向阀特点负荷敏感控制系统节能多个执行结构同时动作，流量与负载无关每个阀芯可单独设置流量压力微调性能好当系统出现流量不饱和时（泵供给的流量小于同时工作的执行结构所需流量），大负载执行结构流量先减少。不能实现执行机构的同步操作要求。BeijingRoad-HydraulicSystemTechnologyCo.,Ltd.8负载传感控制原理一A1A2BeijingRoad-HydraulicSystemTechnologyCo.,Ltd.9负载传感控制原理二BeijingRoad-HydraulicSystemTechnologyCo.,Ltd.10负载传感控制原理三压力截断DR负荷传感FRM4/SB多路阀X-portA10VO31DRFRBeijingRoad-HydraulicSystemTechnologyCo.,Ltd.11负载传感控制原理四LRDS负荷传感FR(el./hydr.remotecontrol)压力截断DR功率调节LR(el./hydr.remotecontrol)M4,M7多路阀DporificeBeijingRoad-HydraulicSystemTechnologyCo.,Ltd.12流量分配控制负荷敏感多路阀在流量不饱和状态下，流量的分配会受执行机构的负荷影响，大负荷的执行机构将降低速度，甚至停止运动。这样，执行机构的运动将不能与指令信号同步，系统操控性差。为了改善阀的操控性能，我们改变阀的压力补偿方式，形成了与压力无关的流量分配阀。BeijingRoad-HydraulicSystemTechnologyCo.,Ltd.13流量分配控制原理BeijingRoad-HydraulicSystemTechnologyCo.,Ltd.负载敏感阀M4阀体结构14El.-prop.PressureLimitationEndCoverint.pilotoilsupplyext.pilotoilsupplystandardPilotCover(A)electrohydraulicw/integratedelectronicsInletElementshydraulicClosedCentermid-inletClosedCentermid-inletwithPriorityEndCoverw/powerbeyondstandardBeijingRoad-HydraulicSystemTechnologyCo.,Ltd.A10VO系列控制型式15HydraulicsDeckelBDeckelA力士乐敏感阀M4工作联结构PilotCoverBw/StrokeLimiterMainSpool18(interchangeable)Shock/AntiCav.ValveEl.-Hydr.PilotValvesw/DeutschorAMPConnectorLoadCheckFunctionPressureCompensatorLS-CheckValveLS-PressureReliefValves(A/B)BeijingRoad-HydraulicSystemTechnologyCo.,Ltd.M4流量调节16Pp(pressureCompensator)1shim:152psi10,5bar2shims:174psi12bar0shim:130psi9barNumberofshimsBeijingRoad-HydraulicSystemTechnologyCo.,Ltd.17LS负载敏感控制ATXYBPTMBMAFA,DpDpControlBeijingRoad-HydraulicSystemTechnologyCo.,Ltd.M4系统冲击保护阀18ATXYBPTMBMABeijingRoad-HydraulicSystemTechnologyCo.,Ltd.19M4用防吸空阀补油ATXYBPTMBMABeijingRoad-HydraulicSystemTechnologyCo.,Ltd.力士乐负载敏感阀种类20Directionalvalves-LoadSensingSizeSP081660l/mingpmM4-1213035M4-15-2x18048M4-22400100BeijingRoad-HydraulicSystemTechnologyCo.,Ltd.21压力流量恒功率控制A10VO系列BeijingRoad-HydraulicSystemTechnologyCo.,Ltd.谢谢！22