The invention discloses a hydraulic control system, a control method of the hydraulic control system and a cantilever crane. The hydraulic control system includes: a first proportional valve; a first oil port of the electromagnetic directional valve is communicated with the first proportional valve, a second oil port of the electromagnetic directional valve is used for being communicated with an oil return tank, a third oil port of the electromagnetic directional valve is communicated with a rod cavity of the oil cylinder through a first pipeline, and a fourth oil port of the electromagnetic directional valve is communicated with a rodless cavity of the oil cylinder through a second pipeline; the first balance valve is arranged on the first pipeline; the second balance valve is arranged on the second pipeline; the second proportional valve is arranged on the second pipeline, and the second proportional valve is arranged between the second balance valve and the electromagnetic directional valve; and a damping circuit. According to the hydraulic control system, the stability of the arm support during starting can be improved.
本发明公开了一种液压控制系统、液压控制系统的控制方法以及臂架。液压控制系统包括:第一比例阀;电磁换向阀,电磁换向阀的第一油口与第一比例阀连通,电磁换向阀的第二油口用于与回油箱连通,电磁换向阀的第三油口与油缸的有杆腔通过第一管路连通,电磁换向阀的第四油口与油缸的无杆腔通过第二管路连通;第一平衡阀,第一平衡阀设置在第一管路上;第二平衡阀,第二平衡阀设置在第二管路上;第二比例阀,第二比例阀设置在第二管路上,且第二比例阀设置在第二平衡阀与电磁换向阀之间;以及阻尼回路。上述的液压控制系统能够提高臂架在启动时的平稳性。
Hydraulic control system, control method of hydraulic control system and boom
液压控制系统、液压控制系统的控制方法以及臂架
2022-10-21
Patent
Electronic Resource
Chinese
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