Handheld control box and control circuit matched with stage machinery electrical control cabinet for use

The utility model provides a handheld control box matched with a stage machinery electrical control cabinet for use and a control circuit, and belongs to the field of stage machinery control equipment. The device comprises a handheld control box body, the handheld control box body is connected with an aviation plug through a control cable, and the aviation plug is matched with an aviation socket arranged on speed regulation equipment in an electrical control cabinet; the handheld control box body is provided with a local/remote change-over switch, an emergency stop button, an ascending button, a descending button, a speed adjusting knob and a power indicator. The handheld control box is independent of the PLC control system and is not affected by PLC faults and system communication faults, and when the PLC control system breaks down, the handheld control box is used for controlling a single device to operate normally or be used in emergency situations; and corresponding aviation sockets are arranged in the el