Hydraulic control valve bank, hydraulic system and control method

The invention belongs to the field of engineering machinery, and particularly relates to a hydraulic control valve bank, a hydraulic system and a control method.The hydraulic control valve bank is provided with an oil inlet and an oil outlet, the hydraulic control valve bank comprises a movable arm working valve and a crushing working valve, and the oil inlet is connected with an oil inlet of the movable arm working valve and an oil inlet of the crushing working valve; the oil outlet is respectively connected with an oil return port of the movable arm working valve and an oil return port of the crushing working valve; a first working oil port of the movable arm working valve is used for being connected with a rod cavity of a movable arm oil cylinder, and a second working oil port of the movable arm working valve is used for being connected with a rodless cavity of the movable arm oil cylinder. A first working oil port of the crushing working valve is used for being connected with a rodless cavity of the movab