The invention provides a hydraulic control system and a control method of a rotary drilling rig pressurizing winch, and the hydraulic control system of the rotary drilling rig pressurizing winch comprises a first oil path, a second oil path, an overflow valve, a first electromagnetic valve, an inverse proportion electromagnetic valve and a first one-way valve, the first oil way and the second oil way are respectively communicated with a first oil port and a second oil port of the pressurizing winch motor, the overflow valve, the first electromagnetic valve and the inverse proportion electromagnetic valve are respectively connected between the first oil way and the second oil way, and the overflow valve, the first electromagnetic valve and the inverse proportion electromagnetic valve are respectively arranged in parallel. The initial current of the inverse proportional electromagnetic valve is a first current value, when the load exceeds the lifting force of the main winch, the input current of the inverse proportional electromagnetic valve is reduced, the system pressure is increased, meanwhile, the flow output of the main winch system is controlled through speed matching calculation, and the speed of the main winch is close to that of pressurized winch as much as possible; and the pressurizing winch can cooperate with the main winch to synchronously lift. According to the hydraulic control system for the pressurization winch of the rotary drilling rig, the pressurization winch and the main winch can have synchronism, meanwhile, the pressurization winch motor is prevented from sucking air, and the multi-working-condition requirements of the rotary drilling rig are met.
本发明提供一种旋挖钻机加压卷扬的液压控制系统及其控制方法,旋挖钻机加压卷扬的液压控制系统包括第一油路、第二油路、溢流阀、第一电磁阀、反比例电磁阀和第一单向阀,第一油路、第二油路分别与加压卷扬马达的第一油口、第二油口连通,溢流阀、第一电磁阀和反比例电磁阀分别连接于第一油路和第二油路之间,溢流阀、第一电磁阀和反比例电磁阀分别并列设置,第一电磁阀得电时,反比例电磁阀的初始电流为第一电流值,当负载超过主卷扬的提升力时,减小反比例电磁阀的输入电流,使系统压力增加,同时,通过速度匹配计算,控制主卷扬系统流量输出,使主卷扬速度尽可能接近加压卷扬,保证加压卷扬能够协同主卷扬同步提升。本发明的旋挖钻机加压卷扬的液压控制系统能够使加压卷扬与主卷扬具有同步性,同时防止加压卷扬马达吸空,并满足旋挖钻机的多工况需求。
Hydraulic control system for pressurizing winch of rotary drilling rig and control method of hydraulic control system
旋挖钻机加压卷扬的液压控制系统及其控制方法
2025-03-25
Patent
Electronic Resource
Chinese
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