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1、常开式常闭式114th–15thJanuary2004,BoschRexrothinChina214th–15thJanuary2004,BoschRexrothinChina314th–15thJanuary2004,BoschRexrothinChina4WRD(E)5XNG10,16,25,32,35Qmax3000l/min4/3RVNG10,16,25,32Qmax3500l/min4WRLE(H)NG6/10Qmax180l/min4WRA(E)2XNG6/10Qmax75l/min4WRE(E)2XNG6/10Qmax180l/min4WRZ(E)7XNG10,16,25,3
2、2,52Qmax2800l/min4WRK(E)2XNG10,16,25,32,35Qmax3000l/minProportionalValvesHighResponseControlValves4WS(E)2EM5XNG10QN90l/min(beipv70bar)4WSE3EENG16,25,32QN850l/min(beipv70bar)4WS(E)2EM2XNG6QN20l/min(beipv70bar)ServoValves4WRPENG10,16,25,32Qmax3500l/min4/3HRV1NG6Qmax24l/min4/3WV1NG6/10Qmax120l/min
3、4/3WV1OBENG6/10Qmax120l/min4/3WV1OBENG6/10Qmax100l/minHIHIHIHIHIHIHIHI414th–15thJanuary2004,BoschRexrothinChina514th–15thJanuary2004,BoschRexrothinChina614th–15thJanuary2004,BoschRexrothinChina开环比例液压系统传统的结构形式:4WRA精度较低,响应较慢滞环:5%;灵敏度:0.5%;反向域:1%相频特性(-900,50%输入信号):10~25Hz714th–15thJanuary2004,Bosc
4、hRexrothinChina4WRE…注意:不同系列的比例伺服阀的放大器(尤其外置放大器),其电气参数不同!即外置放大器一般不可更换!不同系列的比例伺服阀的安装尺寸有的相同,有的不同,需进行一下核对!814th–15thJanuary2004,BoschRexrothinChina914th–15thJanuary2004,BoschRexrothinChina开环比例液压系统先导式比例方向阀:4WRZ电比例控制多路阀的仿制品精度较低,响应较慢滞环:6%;1014th–15thJanuary2004,BoschRexrothinChinaProportionalDirectional
5、Valve4WRZE-7X1114th–15thJanuary2004,BoschRexrothinChinaFeatures4WRZE-7X...PilotedProportionalValvewithandwithoutOnBoardElectronicsPilotpressurecontrolledbyapressurecontrolvalveD3HighreliabilityandsimpleoperationAtlossofelectricalpowerorcablebrake,mainspoolispositionedinstrokecenterpositionmax.allo
6、wablecontaminationlevelofthefluidisclass9toNAS1638,or18/15toISO44061214th–15thJanuary2004,BoschRexrothinChina1314th–15thJanuary2004,BoschRexrothinChina1414th–15thJanuary2004,BoschRexrothinChina开环比例液压系统DBETE…精度一般,响应较慢Qmax=2l/min.滞环:1.5%重复精度:2%线性度:最高压力的3.5%开关时间:30~150ms1514th–15thJanuary2004,B
7、oschRexrothinChina直控式,带反馈;DBETRE…(PV1-DBV…)DBETRE…精度较高,响应很快Qmax=1l/min.滞环:0.2%温漂:1%,当T=400C开关时间:10ms(10%)~30ms(100%)1614th–15thJanuary2004,BoschRexrothinChina先导式,不带反馈;(Z)DBE(E)…6(Z)DBE(E)…精度一般,响应较快Qmax=30l/min