Truncated-roof reserved base-less photovoltaic module installation system

The utility model relates to the field of solar photovoltaic, in particular to a photovoltaic module installation system in the field of photovoltaic building integration, which is a truncated-roof reserved base-less photovoltaic module installation system. The system is a generating set, solar modules are fixed on a support by bolts, and connecting wires are then converged into a photovoltaic control cabinet via wiring troughs. The effective combination of photovoltaic generating equipment and the truncated roofs of new and old buildings is realized. The utility model is simple, practical and reliable, and is the generating set with extremely high scalability; the utility model can realize the mass production of photovoltaic generating equipment, and solves problems, such as mass installation and transportation; meanwhile, the utility model solves the problem on how to simplify the mounting method of the solar modules, moreover, repair and maintenance are convenient, time and labor are saved, and the costs of fabrication and manual maintenance are reduced.