Emergency power control system of hydraulic excavator

The utility model relates to an emergency power control system of a hydraulic excavator. The emergency power control system comprises a main control system and an emergency power control system, wherein the main control system comprises a main controller, an engine control knob, a proportional solenoid and a power supply; and the emergency power control system comprises an emergency controller and an emergency mode switch. According to the emergency power control system of the hydraulic excavator disclosed by the utility model, the emergency power control system is additionally arranged so that the safety of the whole car is greatly improved; even if the main control system has a power control fault and cannot be maintained in real time or is inconvenient to maintain, the main control system is switched into the emergency power control system and then the hydraulic excavator can still carry out basic work; an emergency task can be finished or the hydraulic excavator can be driven to a safety region to be over