Double-cylinder synchronous deviation rectifying system and method for hydraulic hoist: Fid-Bau Portal

Double-cylinder synchronous deviation rectifying system and method for hydraulic hoist

WANG XIANGHUI

The hydraulic hoist double-cylinder synchronous deviation rectifying system comprises an oil tank, the oil tank is connected with an oil pumping system used for providing high-pressure oil, an oil outlet of the oil pumping system is connected with an electromagnetic reversing valve, and the electromagnetic reversing valve is connected with a rod cavity of a first oil cylinder through a first rectifying plate; the electromagnetic reversing valve is connected with a rod cavity of the second oil cylinder through a second rectifying plate; the device is characterized in that a first flow meter for monitoring flow is mounted on the first rectifying plate, and a second flow meter for monitoring flow is mounted on the second rectifying plate; rodless cavities of the first oil cylinder and the second oil cylinder are connected with an oil return system. According to the system, the double-cylinder flow detection function is added, when the flow deviation is large, the given opening value of the proportional valve is greatly adjusted, the synchronism of the double cylinders can be guaranteed, and gate opening and closing failures caused by deviation overrun are avoided.

本发明提供了一种液压启闭机双缸同步纠偏系统及方法，它包括油箱，油箱与用于提供高压油的泵油系统相连，泵油系统的出油口与电磁换向阀相连，电磁换向阀通过第一整流板与第一油缸的有杆腔相连，电磁换向阀通过第二整流板与第二油缸的有杆腔相连；其特征在于，所述第一整流板上安装有用于流量监测的第一流量计，第二整流板上安装有用于流量监测的第二流量计；第一油缸和第二油缸的无杆腔与回油系统相连。本系统通过增加双缸流量检测功能，在流量偏差较大时，大幅调整比例阀给定开口值，可以保证双缸同步性，避免偏差超限导致闸门启闭失败。

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