Partially opened and closed type foundation pit dustproof awning device

The utility model discloses a partial opening and closing type foundation pit dustproof awning device, and relates to the technical field of building dust prevention. The dustproof curtain comprises a dustproof curtain body and a steel wire rope, the dustproof curtain body is arranged above the steel wire rope, and a working window is formed in the middle of the dustproof curtain body; and a dustproof plate is arranged on the upper portion of the side wall of the supporting plate, and the dustproof plate is located under the working window and used for blocking the working window. According to the utility model, under general conditions, the dustproof plate is in a horizontal state and can shield the working window and prevent dust from escaping, and when the tower crane works, the driving mechanism drives the rotating rod to rotate so as to drive the turnover assembly to operate, so that the dustproof plate is switched from the horizontal state to the vertical state, and the tower crane can work through the