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A platform for research: civil engineering, architecture and urbanism
Pilot control valve group and ultra-large mining excavator
The invention discloses a pilot control valve group and an ultra-large mining excavator. The pilot control valve group comprises a preheating unit and a working unit which are independently arranged; the preheating unit comprises a first primary pilot valve and a damper which are communicated with each other, and hydraulic oil enters the damper after passing through the first primary pilot valve and flows into an oil return tank after passing through the damper; the working unit comprises a second first-stage pilot valve and a second-stage main valve which are communicated with each other, and the hydraulic oil enters the second-stage main valve after passing through the second first-stage pilot valve, so that a second-stage valve element in the second-stage main valve is reversed, pilot pressure oil is output to a plurality of main valve elements, and all the main valve elements are reversed and execute corresponding actions. Under the same flow specification, the pilot control valve set is compact in appearance, small in occupied space and few in used piping, and compared with a pilot control valve set with the same function, the number of electric proportional pressure reducing valves is reduced, cost and control difficulty are lowered, and use of vehicle-mounted controller ports is reduced.
本发明公开了一种先导控制阀组及超大型矿用挖掘机，所述先导控制阀组包括独立设置的预热联和工作联；所述预热联包括相互连通的第一一级先导阀和阻尼，液压油经过所述第一一级先导阀后进入所述阻尼，经过所述阻尼后流入回油箱；所述工作联包括相互连通的第二一级先导阀和二级主阀，所述液压油经过所述第二一级先导阀后进入所述二级主阀，使得所述二级主阀中的二级阀芯换向并输出先导压力油至多个主阀阀芯，使得各主阀芯换向并执行相应动作。本发明在相同流量规格下，外形紧凑，占用空间少，使用配管少，且相对于同等功能的先导控制阀组，减少了电比例减压阀的数量，降低了成本和控制难度，减少车载控制器端口的使用。
Pilot control valve group and ultra-large mining excavator
The invention discloses a pilot control valve group and an ultra-large mining excavator. The pilot control valve group comprises a preheating unit and a working unit which are independently arranged; the preheating unit comprises a first primary pilot valve and a damper which are communicated with each other, and hydraulic oil enters the damper after passing through the first primary pilot valve and flows into an oil return tank after passing through the damper; the working unit comprises a second first-stage pilot valve and a second-stage main valve which are communicated with each other, and the hydraulic oil enters the second-stage main valve after passing through the second first-stage pilot valve, so that a second-stage valve element in the second-stage main valve is reversed, pilot pressure oil is output to a plurality of main valve elements, and all the main valve elements are reversed and execute corresponding actions. Under the same flow specification, the pilot control valve set is compact in appearance, small in occupied space and few in used piping, and compared with a pilot control valve set with the same function, the number of electric proportional pressure reducing valves is reduced, cost and control difficulty are lowered, and use of vehicle-mounted controller ports is reduced.
本发明公开了一种先导控制阀组及超大型矿用挖掘机，所述先导控制阀组包括独立设置的预热联和工作联；所述预热联包括相互连通的第一一级先导阀和阻尼，液压油经过所述第一一级先导阀后进入所述阻尼，经过所述阻尼后流入回油箱；所述工作联包括相互连通的第二一级先导阀和二级主阀，所述液压油经过所述第二一级先导阀后进入所述二级主阀，使得所述二级主阀中的二级阀芯换向并输出先导压力油至多个主阀阀芯，使得各主阀芯换向并执行相应动作。本发明在相同流量规格下，外形紧凑，占用空间少，使用配管少，且相对于同等功能的先导控制阀组，减少了电比例减压阀的数量，降低了成本和控制难度，减少车载控制器端口的使用。
Pilot control valve group and ultra-large mining excavator
一种先导控制阀组及超大型矿用挖掘机
PENG LELE (author) / XIA SHUQIANG (author) / LI HUI (author) / LIU WEI (author)
2023-05-23
Patent
Electronic Resource
Chinese
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