Heat preservation cover

The utility model provides a heat preservation cover, and relates to the technical field of power transmission line foundation construction. The heat preservation cover comprises a plurality of flexible heat preservation layers, each flexible heat preservation layer is of a polygonal structure, and each edge of each flexible heat preservation layer is detachably connected with the edge of the other flexible heat preservation layers so as to form a cover body structure which is provided with a containing space and an opening in one side. According to the technical scheme, different numbers of flexible protection layers can be spliced to form different shapes and sizes of cover body structures, so that the effects of repeated use and wide applicability are achieved, and the problems that heat preservation materials adopted in an existing heat preservation mode cannot be reused and are poor in applicability can be solved. 本申请提供一种保温罩，涉及输电线路基础施工技术领域。其中，该保温罩包括：多个柔性保温层，所述柔性保温层为多边形结构，每个所述柔性保温层的每个边缘分别与其余的所述柔性保温层的边缘可拆卸