Electric proportioning pump emergency control device and concrete pump truck

The utility model discloses an emergency control device for an electric proportional pump and a concrete pump truck, which belong to the field of concrete pump trucks, and are characterized in that an existing electric proportional closed two-way variable pump is modified, a transition hydraulic valve device and a manual hydraulic valve are additionally arranged between a proportional electromagnet and a control valve core, and an external control oil way is introduced; a manual hydraulic valve is used for controlling a main oil pump to reverse, and when an electric control system breaks down or a main oil pump proportion electromagnet loses efficacy, action control over a pumping hydraulic system is achieved by operating an emergency device. 本实用新型公开了一种电比例泵应急控制装置及混凝土泵车，属于混凝土泵车领域，本实用新型通过对现有的电比例闭式双向变量泵进行改造，在比例电磁铁和控制阀芯之间加装过渡液压阀装置和手动液压阀，引入外部控制油路，用手动液压阀控制主油泵换向，在电控系统故障或主油泵比例电磁铁失效时，通过操作应急装置实现对泵送液压系统的动作控制。