Engineering machinery equipment and hydraulic control loop thereof

The utility model discloses a hydraulic control loop of engineering machinery equipment. The hydraulic control loop of the engineering machinery equipment comprises a hydraulic oil tank, at least two hydraulic pumps, at least one unloading valve, at least one one-way valve and a main valve, wherein an oil inlet end of each hydraulic pump is connected with the hydraulic oil tank, one end of each unloading valve is connected with an oil outlet end of one hydraulic pump, the other end of each unloading valve is connected with the hydraulic oil tank, the oil outlet end of each hydraulic pump connected with each unloading valve is connected with an oil inlet end of each corresponding one-way valve, an oil outlet end of each one-way valve is connected with the main valve, and the oil outlet end of each hydraulic oil pump not connected with each unloading valve is connected with the main valve. The utility model further discloses the engineering machinery equipment provided with the hydraulic control loop. Through the method, the hydraulic control loop is more energy-saving while accurately controlling the engineering machinery equipment, and meanwhile, the hydraulic control loop is suitable for manual control type and automatic control type engineering machinery equipment.