一种矿用液压挖掘机铲斗开闭液压控制系统设计  

The Design of a Shovel Flap Hydraulics System for Mining Hydraulic Excavator

作　　者：吕晓林[1] LV Xiao-lin(Taiyuan Heavy Industry Limited Company,Taiyuan 030024,China)

机构地区：[1]太原重工股份有限公司

出　　处：《液压气动与密封》2019年第8期64-66,共3页Hydraulics Pneumatics & Seals

摘　　要：该文综述了一种矿用液压挖掘机铲斗开闭液压控制系统的设计,在矿用液压挖掘机挖掘过程中,铲斗打开后,铲斗斗体自重产生了巨大势能,同时,在闭斗过程中会产生剧烈的冲击。通过分析以上铲斗工作工况,设计计算和选择了带有差动功能的主控制阀、带固定节流口的单向节流阀,同时把有杆腔次级压力阀设置于开闭斗油缸处,完成了一种矿用液压挖掘机铲斗开闭液压控制系统的设计。现场应用显示该系统充分利用了铲斗斗体自重势能,减缓了闭斗冲击;同时,铲斗在不同的打开状态下,仍能快速闭斗,减少了整机的功率输出,起到节能作用。The paper reviewed a shovel flap hydraulic system of mining hydraulic excavator.When the mining hydraulic excavator is working,the weight of the bucket produces potential energy after bucket opening,and acute strike will take place when closing bucket.Through analyzing the case,author calculated and secluded the control valve with differential function,throttle/check valve,and set second pressure valve on shovel flap cylinder,so finished a shovel flap hydraulic system of mining hydraulic excavator.The application of a certain mining hydraulic excavator show that the system can fully reuse of the energy and quickly close the bucket when bucket is on different opening station.So the system can fully reuse of the energy and decreased the output of the engine.

关 键 词：矿用液压挖掘机 开闭斗油缸 势能 设计 

分 类 号：TH137[机械工程—机械制造及自动化]