The invention belongs to the field of hydraulic accessories, and relates to a pressure relief protection type brake control valve which comprises an electro-hydraulic pressure servo valve, a stop valve and a pressure sensor. The electromagnetic stop valve comprises an electromagnetic valve and a switching valve; a pressure relief protection channel is additionally arranged between the electro-hydraulic pressure servo valve and the switching valve; when the electromagnetic valve is powered on, the switching valve element moves to a power-on working position, oil is supplied to the electro-hydraulic pressure servo valve, and a pressure relief protection channel of the electro-hydraulic pressure servo valve is closed; when the electro-hydraulic pressure servo valve is powered on, a valve element of the electro-hydraulic pressure servo valve moves rightwards, and brake pressure output is achieved; when the electro-hydraulic pressure servo valve is powered off, a valve element of the electro-hydraulic pressure servo valve moves leftwards, and brake pressure is relieved through an oil return channel at the moment; and if the valve core is blocked and cannot move, the brake pressure can be relieved through the pressure relief protection channel. The quality of the brake control valve can be improved, pressure relief protection is achieved by increasing an internal pressure relief channel and cutting off oil supply pressure, and the life of a pilot and the safety of an airplane can be greatly protected.
本发明属于液压附件领域,涉及一种泄压保护型刹车控制阀,刹车控制阀包括电液压力伺服阀、切断阀和压力传感器;电磁切断阀包括电磁阀和切换阀;在电液压力伺服阀与切换阀之间增加泄压保护通道;电磁阀通电时,切换阀阀芯移动至通电工作位,向电液压力伺服阀供油,并关闭电液压力伺服阀的泄压保护通道;当电液压力伺服阀通电时,自身的阀芯向右移动,实现刹车压力输出;当电液压力伺服阀断电时,自身的阀芯向左移动,此时刹车压力通过回油通道泄压;若自身的阀芯卡滞无法移动时,刹车压力可经泄压保护通道泄压。本发明可以提高刹车控制阀质量,通过增加内部泄压通道,切断供油压力,实现泄压保护,可以极大地保护飞行员生命和飞机的安全。
Pressure relief protection type brake control valve
一种泄压保护型刹车控制阀
2024-04-19
Patent
Electronic Resource
Chinese
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