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HYDRAULIC SYSTEM FOR INCREASING OPERATION SPEED OF CONSTRUCTION MACHINERY BOOM
A hydraulic system for increasing the operation speed of a construction machinery boom comprises: a boom cylinder for operating a construction machinery boom; a main control valve having a boom control spool for selectively supplying hydraulic oil, supplied from a hydraulic pump, to a boom head chamber and a boom rod chamber of the boom cylinder through a boom head hydraulic line and a boom rod hydraulic line; a regeneration device connected to the boom head chamber of the boom cylinder through a hydraulic regeneration line, so as to regenerate energy in the boom cylinder; and a regeneration valve unit installed in the hydraulic regeneration line and having a flow control valve for controlling the flow rate of the hydraulic oil flowing through the hydraulic regeneration line, wherein energy stored in the regeneration device during lowering of the boom is supplied directly to the boom cylinder via the flow control valve when the boom is raised.
本发明的工程机械的动臂增速液压系统包括：动臂缸，其用于使工程机械的动臂工作；主控制阀，其具有通过动臂头液压管线和动臂杆液压管线向所述动臂缸的动臂头腔室和动臂杆腔室选择性地供应来自液压泵的工作油的动臂控制阀芯；再生装置，其通过液压再生管线连接于所述动臂缸的所述动臂头腔室，且用于再生所述动臂缸的能量；以及再生阀单元，其设置于所述液压再生管线，且具有用于控制通过所述液压再生管线流动的工作油的流量的流量控制阀，动臂下降时储存于所述再生装置的能量在动臂上升时通过所述流量控制阀直接被供应至所述动臂缸。
HYDRAULIC SYSTEM FOR INCREASING OPERATION SPEED OF CONSTRUCTION MACHINERY BOOM
A hydraulic system for increasing the operation speed of a construction machinery boom comprises: a boom cylinder for operating a construction machinery boom; a main control valve having a boom control spool for selectively supplying hydraulic oil, supplied from a hydraulic pump, to a boom head chamber and a boom rod chamber of the boom cylinder through a boom head hydraulic line and a boom rod hydraulic line; a regeneration device connected to the boom head chamber of the boom cylinder through a hydraulic regeneration line, so as to regenerate energy in the boom cylinder; and a regeneration valve unit installed in the hydraulic regeneration line and having a flow control valve for controlling the flow rate of the hydraulic oil flowing through the hydraulic regeneration line, wherein energy stored in the regeneration device during lowering of the boom is supplied directly to the boom cylinder via the flow control valve when the boom is raised.
本发明的工程机械的动臂增速液压系统包括：动臂缸，其用于使工程机械的动臂工作；主控制阀，其具有通过动臂头液压管线和动臂杆液压管线向所述动臂缸的动臂头腔室和动臂杆腔室选择性地供应来自液压泵的工作油的动臂控制阀芯；再生装置，其通过液压再生管线连接于所述动臂缸的所述动臂头腔室，且用于再生所述动臂缸的能量；以及再生阀单元，其设置于所述液压再生管线，且具有用于控制通过所述液压再生管线流动的工作油的流量的流量控制阀，动臂下降时储存于所述再生装置的能量在动臂上升时通过所述流量控制阀直接被供应至所述动臂缸。
HYDRAULIC SYSTEM FOR INCREASING OPERATION SPEED OF CONSTRUCTION MACHINERY BOOM
工程机械的动臂增速液压系统
KANG BYUNG IL (author)
2020-06-02
Patent
Electronic Resource
Chinese
IPC:
E02F
Baggern
,
DREDGING
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