The invention discloses an automatic control method and device for a crane rotary parking brake system. The method comprises the following steps: collecting pilot pressure output by a hydraulic control pilot handle during rotary action, and controlling an electrical loop of a brake valve to be closed if the pilot pressure is gradually increased to reach an ascending switch point, specifically, the ascending switch point is smaller than the pilot opening pressure of a rotary reversing valve; and when rotation is stopped, collecting pilot pressure output by the hydraulic control pilot handle, and if the pilot pressure is gradually reduced to reach a descending switch point, controlling the electrical loop of the brake valve to be disconnected after a set time is delayed, specifically, the descending switch point is smaller than the ascending switch point. The phenomenon that when a crane is located on the ground with the gradient, a rotary braking rocker switch or a rotary knob switch or a button switch is not turned off in time, and consequently the crane slides is effectively avoided, and the safety of the crane is improved.
本发明公开了一种起重机回转驻车制动系统的自动控制方法及装置,方法包括以下过程:当做回转动作时,采集液控先导手柄输出的先导压力,若先导压力逐渐增大达到上升开关点时,则控制制动阀的电气回路闭合,所述上升开关点小于回转换向阀的先导开启压力;当停止回转时,采集液控先导手柄输出的先导压力,若先导压力逐渐减小达到下降开关点时,则延时设定时间后控制制动阀的电气回路断开,所述下降开关点小于上升开关点。本发明有效避免起重机处于有坡度的地面时未及时关闭回转制动翘板开关或旋钮开关或按钮开关导致溜车的现象,增加了起重机的安全性。
Automatic control method and device for crane rotary parking brake system
一种起重机回转驻车制动系统的自动控制方法及装置
2021-06-11
Patent
Electronic Resource
Chinese
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