Maintenance device adopting modular air bag structure and suitable for concrete construction in winter

The utility model discloses a maintenance device adopting a modular air bag structure and suitable for concrete construction in winter, which comprises a plurality of air bag module units which are connected with one another and wrap the outer side of a concrete member or a pouring template, wherein each air bag module unit comprises a flexible assembly panel, an air bag and a connecting tensioner, the air bag is fixed to one side of the flexible assembly panel, and the multiple connecting tensioners are distributed on the circumferential edge of the other side of the flexible assembly panel at intervals and used for connecting the multiple air bag module units into a whole; the air bag is of a hollow structure and used for being filled with air, an electric heating panel and a pneumoelectric integrated spiral connector are arranged on the air bag, and a pressure and temperature integrated sensor is arranged on the electric heating panel. The utility model can be suitable for winter construction of concrete m