力士乐内部企业知识管理培训资料课件

直动式溢流阀的结构简单价廉经典结构:缓冲间隙导向,防偏置.偏流盘：流线型泄油口,平衡液动力.将整个调压范围分区，采用不同刚度的调压弹簧，以使特性曲线更加理想大流量的场合压力波动大、装配调节困难…114th–15thJanuary2004,BoschRexrothinChina直动式溢流阀的结构简单114th–15thJanuar锥阀结构球阀结构214th–15thJanuary2004,BoschRexrothinChina锥阀结构球阀结构214th–15th插装式结构：314th–15thJanuary2004,BoschRexrothinChina插装式结构：314th–15thJanuary200应用举例：直动式阀的缺陷：大流量的场合压力波动大、稳定性差装配调节困难414th–15thJanuary2004,BoschRexrothinChina应用举例：直动式阀的缺陷：414th–15thJanu先导式溢流阀的基本原理由直动式的缺陷而来.液压力与弹簧力;液压力与液压力液压半桥514th–15thJanuary2004,BoschRexrothinChina先导式溢流阀的基本原理由直动式的缺陷而来.514th–1先导式溢流阀的结构614th–15thJanuary2004,BoschRexrothinChina先导式溢流阀的结构614th–15thJanuary714th–15thJanuary2004,BoschRexrothinChina714th–15thJanuary2004,Bos泄荷阀：ＤＢＷ814th–15thJanuary2004,BoschRexrothinChina泄荷阀：ＤＢＷ814th–15thJanuary20泄荷阀ＤＢＷ的泄荷缓冲板利用电信号泄荷响应很快，易造成系统的压力尖峰，噪音等，为了解决上述问题，加装缓冲板，见图示914th–15thJanuary2004,BoschRexrothinChina泄荷阀ＤＢＷ的泄荷缓冲板利用电信号泄荷响应很快，易造成系统的多级调压模块：DB3U1014th–15thJanuary2004,BoschRexrothinChina多级调压模块：DB3U1014th–15thJanuaForconstantpumpForvariablepump,relationshiptoDR-control.Softoperation,unloadingstart.(与DBW相同）1114th–15thJanuary2004,BoschRexrothinChinaForconstantpump1114th–15t1214th–15thJanuary2004,BoschRexrothinChina1214th–15thJanuary2004,Bo直动式三通减压阀的结构1314th–15thJanuary2004,BoschRexrothinChina直动式三通减压阀的结构1314th–15thJanua应用举例1414th–15thJanuary2004,BoschRexrothinChina应用举例1414th–15thJanuary20041514th–15thJanuary2004,BoschRexrothinChina1514th–15thJanuary2004,Bo先导式减压阀的结构(两通式）1614th–15thJanuary2004,BoschRexrothinChina先导式减压阀的结构(两通式）1614th–15thJa先导式、滑阀结构、三通减压阀力士乐独特设计大通径3通减压阀最大流量400l/min.1714th–15thJanuary2004,BoschRexrothinChina先导式、滑阀结构、三通减压阀力士乐独特设计1714th–先导式、滑阀结构、三通减压阀1814th–15thJanuary2004,BoschRexrothinChina先导式、滑阀结构、三通减压阀1814th–15thJa1914th–15thJanuary2004,BoschRexrothinChina1914th–15thJanuary2004,Bo2014th–15thJanuary2004,BoschRexrothinChina2014th–15thJanuary2004,Bo顺序阀利用压力来控制油路的通断，相当于一个液控的二位二通的方向阀。与溢流阀类似，只是后接工作油路，一般控制油需外泄。2114th–15thJanuary2004,BoschRexrothinChina顺序阀利用压力来控制油路的通断，相当于一个液控的二位二通的方先导式顺序阀的结构先导控制油经4.1作用于阀芯5,来改变主阀芯上腔的压力2214th–15thJanuary2004,BoschRexrothinChina先导式顺序阀的结构先导控制油经4.1作用于阀芯5,来改变主卸荷溢流阀的结构和工作原理先导阀一次开启通过球阀9;此时阀杆6处于力平衡状态,开启后,主阀上腔压力下降.二次保持通过顶杆6;此时,顶杆6一侧卸荷;顶杆6的作用面积比球阀的作用面积大10%或17%.2314th–15thJanuary2004,BoschRexrothinChina卸荷溢流阀的结构和工作原理先导阀一次开启通过球阀9;此时阀2414th–15thJanuary2004,BoschRexrothinChina2414th–15thJanuary2004,Bo2514th–15thJanuary2004,BoschRexrothinChina2514th–15thJanuary2004,Bo2614th–15thJanuary2004,BoschRexrothinChina2614th–15thJanuary2004,Bo流量控制阀分类：节流阀调速阀分流集流阀刹车阀(平衡阀)防管路爆破阀（限速切断阀）2714th–15thJanuary2004,BoschRexrothinChina流量控制阀分类：2714th–15thJanuary节流阀MG/MK…6~302814th–15thJanuary2004,BoschRexrothinChina节流阀MG/MK…6~302814th–15thJanMK-52~1022914th–15thJanuary2004,BoschRexrothinChinaMK-52~1022914th–15thJanuary节流阀3014th–15thJanuary2004,BoschRexrothinChina节流阀3014th–15thJanuary2004,精密节流阀F-5~10

3114th–15thJanuary2004,BoschRexrothinChina精密节流阀F-5~103114th–15th双节流阀3214th–15thJanuary2004,BoschRexrothinChina双节流阀3214th–15thJanuary2004调速阀:原理:节流调速:与负载有关,期望达到与负载无关的效果, 即:如何使p保持恒定!

3314th–15thJanuary2004,BoschRexrothinChina调速阀:原理:3314th–15thJanuary2结构举例：3414th–15thJanuary2004,BoschRexrothinChina结构举例：3414th–15thJanuary200结构举例：3514th–15thJanuary2004,BoschRexrothinChina结构举例：3514th–15thJanuary200应用举例：3614th–15thJanuary2004,BoschRexrothinChina应用举例：3614th–15thJanuary200启动冲击：油液压缩量启动冲击后果：

刀具折断系统冲击起始阶段的“启动阶跃”问题：由于其中的定差减压阀为常开，所以，突然启动时，全压差作用于全开的阀口；从而引起“启动阶跃”效应；另外，负载阶跃变化时，由于定差减压阀响应滞后，对于性能较差的元件也会产生类似现象！

改善办法：利用阀上预留的外接平衡孔。（见回路图举例）3714th–15thJanuary2004,BoschRexrothinChina启动冲击：油液压缩量启动冲击后果：起始阶段的“启动阶跃”问题调速阀的启动前冲问题:3814th–15thJanuary2004,BoschRexrothinChina调速阀的启动前冲问题:3814th–15thJan3914th–15thJanuary2004,BoschRexrothinChina3914th–15thJanuary2004,Bo4014th–15thJanuary2004,BoschRexrothinChina4014th–15thJanuary2004,Bo直动式溢流阀的结构简单价廉经典结构:缓冲间隙导向,防偏置.偏流盘：流线型泄油口,平衡液动力.将整个调压范围分区，采用不同刚度的调压弹簧，以使特性曲线更加理想大流量的场合压力波动大、装配调节困难…4114th–15thJanuary2004,BoschRexrothinChina直动式溢流阀的结构简单114th–15thJanuar锥阀结构球阀结构4214th–15thJanuary2004,BoschRexrothinChina锥阀结构球阀结构214th–15th插装式结构：4314th–15thJanuary2004,BoschRexrothinChina插装式结构：314th–15thJanuary200应用举例：直动式阀的缺陷：大流量的场合压力波动大、稳定性差装配调节困难4414th–15thJanuary2004,BoschRexrothinChina应用举例：直动式阀的缺陷：414th–15thJanu先导式溢流阀的基本原理由直动式的缺陷而来.液压力与弹簧力;液压力与液压力液压半桥4514th–15thJanuary2004,BoschRexrothinChina先导式溢流阀的基本原理由直动式的缺陷而来.514th–1先导式溢流阀的结构4614th–15thJanuary2004,BoschRexrothinChina先导式溢流阀的结构614th–15thJanuary4714th–15thJanuary2004,BoschRexrothinChina714th–15thJanuary2004,Bos泄荷阀：ＤＢＷ4814th–15thJanuary2004,BoschRexrothinChina泄荷阀：ＤＢＷ814th–15thJanuary20泄荷阀ＤＢＷ的泄荷缓冲板利用电信号泄荷响应很快，易造成系统的压力尖峰，噪音等，为了解决上述问题，加装缓冲板，见图示4914th–15thJanuary2004,BoschRexrothinChina泄荷阀ＤＢＷ的泄荷缓冲板利用电信号泄荷响应很快，易造成系统的多级调压模块：DB3U5014th–15thJanuary2004,BoschRexrothinChina多级调压模块：DB3U1014th–15thJanuaForconstantpumpForvariablepump,relationshiptoDR-control.Softoperation,unloadingstart.(与DBW相同）5114th–15thJanuary2004,BoschRexrothinChinaForconstantpump1114th–15t5214th–15thJanuary2004,BoschRexrothinChina1214th–15thJanuary2004,Bo直动式三通减压阀的结构5314th–15thJanuary2004,BoschRexrothinChina直动式三通减压阀的结构1314th–15thJanua应用举例5414th–15thJanuary2004,BoschRexrothinChina应用举例1414th–15thJanuary20045514th–15thJanuary2004,BoschRexrothinChina1514th–15thJanuary2004,Bo先导式减压阀的结构(两通式）5614th–15thJanuary2004,BoschRexrothinChina先导式减压阀的结构(两通式）1614th–15thJa先导式、滑阀结构、三通减压阀力士乐独特设计大通径3通减压阀最大流量400l/min.5714th–15thJanuary2004,BoschRexrothinChina先导式、滑阀结构、三通减压阀力士乐独特设计1714th–先导式、滑阀结构、三通减压阀5814th–15thJanuary2004,BoschRexrothinChina先导式、滑阀结构、三通减压阀1814th–15thJa5914th–15thJanuary2004,BoschRexrothinChina1914th–15thJanuary2004,Bo6014th–15thJanuary2004,BoschRexrothinChina2014th–15thJanuary2004,Bo顺序阀利用压力来控制油路的通断，相当于一个液控的二位二通的方向阀。与溢流阀类似，只是后接工作油路，一般控制油需外泄。6114th–15thJanuary2004,BoschRexrothinChina顺序阀利用压力来控制油路的通断，相当于一个液控的二位二通的方先导式顺序阀的结构先导控制油经4.1作用于阀芯5,来改变主阀芯上腔的压力6214th–15thJanuary2004,BoschRexrothinChina先导式顺序阀的结构先导控制油经4.1作用于阀芯5,来改变主卸荷溢流阀的结构和工作原理先导阀一次开启通过球阀9;此时阀杆6处于力平衡状态,开启后,主阀上腔压力下降.二次保持通过顶杆6;此时,顶杆6一侧卸荷;顶杆6的作用面积比球阀的作用面积大10%或17%.6314th–15thJanuary2004,BoschRexrothinChina卸荷溢流阀的结构和工作原理先导阀一次开启通过球阀9;此时阀6414th–15thJanuary2004,BoschRexrothinChina2414th–15thJanuary2004,Bo6514th–15thJanuary2004,BoschRexrothinChina2514th–15thJanuary2004,Bo6614th–15thJanuary2004,BoschRexrothinChina2614th–15thJanuary2004,Bo流量控制阀分类：节流阀调速阀分流集流阀刹车阀(平衡阀)防管路爆破阀（限速切断阀）6714th–15thJanuary2004,BoschRexrothinChina流量控制阀分类：2714th–15thJanuary节流阀MG/MK…6~306814th–15thJanuary2004,BoschRexrothinChina节流阀MG/MK…6~302814th–15thJanMK-52~1026914th–15thJanuary2004,BoschRexrothinChinaMK-52~1022914th–15thJanuary节流阀7014th–15thJanuary2004,BoschRexrothinChina节流阀3014th–15thJanuary2004,精密节流阀F-5~10

7114th–15thJanuary2004,BoschRexrothinChina精密节流阀F-5~103114th–15th双节流阀7214th–15thJanuary2004,BoschRexrothinChina双节流阀3214th–15thJanuary2004调速阀:原理:节流调速:与负载有关,期望达到与负载无关的效果, 即:如何使p保持恒定!