The design method of the rain cover

Rain cover design method is as follows:
①, small tonnage, small span   bridge gantry crane   Rain cover arranged at the rigid legs. In the main beam winding installation. In the maintenance table above. Rain cover a length greater than the length of hoist.
②, large tonnage, large span gantry crane. Rain cover arranged at the rigid legs. In the main beam-beam top flange installation. In the maintenance table above. Rain cover a length greater than the length of hoist. Width :1200-2000 mm.
③, rain cover the top of the slope, to facilitate drainage.
④,   overhead bridge crane   recommendations rain cover skeleton with angle production. Panel thickness 1-1.5 mm spot light board on the skeleton.