Brake device of downward belt conveyor

The utility model provides a brake device of a downward belt conveyor, which comprises a hydraulic execution system which is connected with a conveyor and can exert brake torque to the conveyor, and a control unit which is electrically connected with the hydraulic execution system and a speed monitoring device, and further consists of a signal receiving device which can receive artificial and/or automatic brake signals, and controls the hydraulic execution system to exert brake torque for the conveyor according to the brake signals. The brake device has simple structure, is suitable for conveyors which incline downwards in different angles, not only guarantees the normal operation and stop brake of the conveyor, but also can still keep the conveyor within normal range when the conveyor overspeeds or operates under negative work.