Winter construction and maintenance device for railway prefabricated box girder sealing end

The utility model discloses a winter construction maintenance device for a railway prefabricated box girder sealing end. The device comprises an L-shaped outer framework, an inner supporting framework, heat preservation tarpaulin, an externally-hung adjusting bolt, a clamping fastening bolt, a steam pipe and a steam valve. The utility model has the advantages that: 1) the structure is simple and light, and processing and installation are convenient; (2) the use is not limited by the field, the long-period occupation of a fixed heat preservation box can be avoided, and the purchase and erection of a movable heat preservation tarpaulin can also be reduced; (3) the operation is convenient, time-saving and labor-saving; 4) energy conservation and environmental protection are realized, toxic gas emission is reduced, and poisoning and fire hazards are eliminated; the cost is reduced, the maintenance space is greatly reduced, and energy consumption is reduced. Through meticulous design, various defects of tedious op