Top plate mounting structure of low-voltage switch cabinet

The utility model discloses a top plate mounting structure of a low-voltage switch cabinet, and belongs to the technical field of switch cabinets. The cabinet comprises a cabinet body and a top plate, wherein the top plate comprises a hollow annular plate and a protective cover; the annular plate is detachably installed on the cabinet top of the cabinet body, an air outlet screen plate is rotationally arranged in the annular plate, a traction piece is further installed in the annular plate, a movable piece matched with the traction piece is connected to the air outlet screen plate, and the traction piece is in linkage with the movable piece to work so as to drive the air outlet screen plate to conduct angle deflection; the protective cover is located above the annular plate and communicated with the annular plate through a pipe fitting, and an opening used for receiving rainwater is formed in the cover top of the protective cover. According to the utility model, rainwater can be received and utilized, and the