The invention provides a balance valve group special for an aerial ladder truck, a hydraulic control system and a control method of the hydraulic control system. The balance valve group special for the aerial ladder truck comprises a valve body, and the valve body integrates a bypass one-way valve, a balance valve and a shuttle valve; the valve body is provided with a first oil port, a second oil port, a first load port and a second load port; the balance valve comprises a pilot control valve and a one-way valve connected in parallel; a pilot control port of the pilot control valve communicates with a second branch port. According to the balance valve group special for the aerial ladder truck, the hydraulic control system and the control method of the hydraulic control system, after a load is in place or falls to the ground, a winding hydraulic motor loop is timely bypassed by the specially-designed bypass one-way valve and stops rotating, so that the problems of loosening, winding and the like of a steel wire rope caused by idle running of a winding drum connected with a hydraulic motor are solved, and the use safety and reliability of the winding drum are ensured.
本发明提供一种云梯车专用平衡阀组、液压控制系统及其控制方法,云梯车专用平衡阀组括阀体,所述阀体集成旁通单向阀、平衡阀和梭阀;所述阀体开设第1油口、第2油口、第1负载口和第2负载口;平衡阀包括并联的先导控制阀和单向阀;所述先导控制阀的先导控制口连通到所述第2分支口。本发明提供的一种云梯车专用平衡阀组、液压控制系统及其控制方法,可实现负载到位或者落地后,卷扬液压马达回路被特殊设计的旁通单向阀及时旁通并停止转动,从而避免与液压马达相连的卷筒空转引起钢丝绳松动、缠绕等问题,保证卷筒使用的安全性和可靠性。
Balance valve group special for aerial ladder truck, hydraulic control system and control method of hydraulic control system
一种云梯车专用平衡阀组、液压控制系统及其控制方法
2021-05-25
Patent
Electronic Resource
Chinese
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