The invention provides a waterproof top cover for a prefabricated cabin, and belongs to the technical field of
power equipment structures, and the waterproof top cover comprises a first top plate, an internal rainproof beam arranged at the bottom of the first top plate, and a fixing
assembly mounted at the bottom of the internal rainproof beam. The split type top plate combination is matched with the precise bending
butt joint mechanism, the
welding workload is greatly reduced while the structural strength is guaranteed, the problems of large-area
welding seam
polishing and rusting are solved, reliable sealing between modules is achieved through the
butt joint bending clamping structure, the defect of
water seepage of joints of a traditional modular top cover is overcome, and the service life of the modular top cover is prolonged. According to the integrally-designed water dripping edge
system, a traditional
welding or screw fixing mode is replaced with an innovative bending forming technology, the installation procedure is simplified, the protection grade is improved, the overall weight is reduced through the optimized structural
layout, transportation and hoisting operation is facilitated, and the production cost is reduced while the production efficiency is improved. And the waterproof performance and the installation convenience of the product are improved.