CLG856液压系统液压系统Hydraulic System标题CLG856液压系统组成液压系统组成Hydraulic System CompositionHydraulic SystemWorking Hydraulic SystemSteering Hydraulic SystemBrake Hydraulic System标题CLG856液压系统组成液压系统组成Hydraulic System CompositionWorking Hydraulic System标题CLG856液压系统组成液压系统组成Hydraulic System CompositionSteering Hydraulic System标题CLG856液压系统组成液压系统组成Hydraulic System CompositionBrake Hydraulic System标题CLG856液压系统原理液压系统原理Hydraulic System Principle标题Working Hydraulic SystemSingle Lever Pilot ValveuPrinciple:8Working Hydraulic SystemMain ValveuPrinciple:9PTPT标题工作系统参数工作系统参数Parameters of Working System工作泵工作泵:Working pump:排量:.140ml/rDisplacement:.140ml/r工作系统设定压力:.20 MPaWorking system setting pressure:.20 MPa额定转速:.2200 r/minRated revolution:.2200 r/min先导操纵阀先导操纵阀:Pilot valve:额定工作压力:.2.5 MPaRated working pressure:.2.5 MPa额定流量:.10 L/minRated flow:.10 L/min控制压力范围:Controlled pressure range:铲斗联:.0.52.5 MPa Bucket linkage:.0.5-2.5 MPa动臂联:.0.52.0 MPa Movable arm linkage:0.5-2.0 MPa电磁铁工作电压:.DC 24 VElectromagnet working pressure:DC 24 V标题工作系统参数工作系统参数 Parameters of Working System组合阀组合阀:Combination valve:额定流量:20L/MRated flow:20 L/M溢流设定压力:4.0MPaOverflow setting pressure:4.0 MPa到先导阀入口压力:3.5MPaPressure to inlet of pilot valve:3.5 MPa单向阀单向阀:Check valve:开启压力:0.05MPaOpening pressure:0.05 MPa标题工作系统参数工作系统参数 Parameters of Working System分配阀分配阀:Distribution valve:类型:整体双联阀Type:integral dual valve额定流量:250L/MRated flow:250L/M主溢流阀设定压力:20MPaMain overflow valve setting pressure:20 MPa转斗油缸小腔设定压力:22MPaSetting pressure of small cavity of rotating bucket cylinder:22 MPa转斗油缸大腔设定压力:22MPaSetting pressure of big cavity of rotating bucket cylinder:22 MPa液压油牌号液压油牌号:Brand of hydraulic oil一般地区:HM46 抗磨液压油General region:HM46 antiwear hydraulic oil寒冷地区:HV46 低温抗磨液压油Cold region:HV46 low-temperature antiwear hydraulic oil 液压油箱液压油箱:Hydraulic oil tank:容量:210L Capacity:210 L标题液压阀件介绍液压阀件介绍Introduction of Hydraulic Valves先导阀先导阀 Pilot Valve组成组成:Components:动臂联动臂联:实现动臂升、降及浮动 转斗联转斗联:实现铲斗的翻转动作Movable arm linkage:realize lifting,descending and floating of the movable armBucket linkage:realize turnover of the bucket工作速度与操作手柄的关系工作速度与操作手柄的关系:手柄动作角度越大，工作速度越快Relation between working speed and operating handle:the greater the operating angle of the handle is,the higher the working speed is.Combination valve oil inOil returnEnclosed oil 计量阀计量阀Metering Valve顺序阀顺序阀Sequence Valve标题液压阀件介绍液压阀件介绍 Introduction of Hydraulic Valves 组合阀组合阀 Combination Valve作用作用:向先导阀提供控制油.Function:provide control oil to the pilot valve组成组成:溢流阀,减压阀,单向阀Components:overflow valve,pressure reducing valve and check valve溢流阀溢流阀:先导式,限定先导系统压力Overflow valve:pilot type,limit the pressure of pilot system减压阀减压阀:减小来自先导泵或动臂油缸大腔的油压Pressure reducing valve:reduce oil pressure from pilot valve or big cavity of movable arm cylinder标题液压阀件介绍液压阀件介绍 Introduction of Hydraulic Valves 分配阀分配阀 Distribution Valve组成组成:动臂滑阀,转斗滑阀,主溢流阀，转斗油缸大小腔双作用安全阀.Components:movable arm slide valve,rotating bucket slide valve,main overflow valve,dual-action safety valve of big cavity and small cavity of rotating bucket cylinder 串串-并联式并联式 Series-parallel type进油进油:串联,转斗优先 Oil in:series,rotating bucket takes priority 回油回油:并联Return oil:parallel补油单向阀补油单向阀:Refilling check valve:防止油缸小腔内发生穴蚀Prevent cavity erosion in small cavity of cylinder当油缸活塞杆收回速度大于泵的供油速度时When the retraction speed of a piston rod of the cylinder is greater than the oil supply speed of the pump当油缸受到突然冲击时When the cylinder is suddenly impacted补油单向阀补油单向阀Refilling Check Valve节流孔节流孔Throttle HolePilot Operated Check Valve标题液压阀件介绍液压阀件介绍 Introduction of Hydraulic Valves 分配阀分配阀 Distribution Valve主溢流阀主溢流阀:先导式,调定主工作系统压力.Main overflow valve:pilot type,adjust main working system pressure压力调节压力调节:旋出、旋进调节螺钉来增加或减小系统压力 Pressure adjustment:screw off and screw in the adjusting screw to increase or reduce the system pressure 压力调节螺钉压力调节螺钉Pressure Adjusting Screw标题液压阀件介绍液压阀件介绍 Introduction of Hydraulic Valves 分配阀分配阀 Distribution Valve转斗油缸卸载阀转斗油缸卸载阀(即转斗油缸大小腔双作用安全阀即转斗油缸大小腔双作用安全阀)Rotating bucket cylinder unloading valve标题检测与调整检测与调整 Inspection and Adjustment工作时间检查工作时间检查Working time inspection动臂起升时间动臂起升时间:6.5 秒内(正常工作温度,额定载荷,额定转速)Movable arm lifting time:within 6.5 s(normal working temperature,rated load and rated revolution)动臂下降时间动臂下降时间:3.6 秒内(怠速,空载)Movable arm descending time:within 3.6 s(idle speed,no load)翻斗时间翻斗时间:1.7 秒内Bucket turnover time:within 1.7 s压力检查压力检查Pressure inspection最大工作压力最大工作压力:20MPaMaximum working pressure:20 MPa在分配阀进油接头处接量程为25MPa 压力表Connect 25 MPa pressure gage at oil in joint of distribution valve在正常温度下At normal temperature额定转速下At rated revolution将动臂升到水平位置Lift the movable arm to horizontal position收斗并读取最大读数.Retract the bucket and read maximum reading.注意注意:在拆装、调整前确保先导切断阀在“断开”位置。
若有此阀）Caution:make sure the pilot cut-off valve is in“OFF”position prior to disassembly and adjustment(if possible).标题检查与调整检查与调整Inspection and Adjustment转斗油缸大腔压力转斗油缸大腔压力:22MPaPressure of big cavity of rotating bucket cylinder:22 MPa检查检查:Inspection:在正常温度与怠速条件下At normal temperature and idle speed在油缸大腔油管测量口接量程为 25MP 压力表Connect 25 MPa pressure gage at o。