A ground-to-ground door hinge

Abstract

This utility model relates to the field of bearing technology, and in particular to a hinged door frame, comprising: a base and an outer sleeve, the base and outer sleeve being threadedly connected, and their relative positions being adjustable; a rotating assembly located inside the outer sleeve; a shaft cover detachably connected to the end of the outer sleeve away from the base, the shaft cover having a first through hole; and a top seat including a shaft body that passes through the first through hole and is interference-fitted with the rotating assembly. This hinged door frame features a split design for the base and outer sleeve, connected by threads, allowing for flexible adjustment of their relative positions. The height of the hinged door frame can be finely adjusted simply by rotating the outer sleeve, improving construction efficiency. When the rotating assembly needs replacement or maintenance, it can be easily removed and replaced by simply removing the shaft cover, without having to replace the entire hinged door frame assembly, thus reducing subsequent maintenance and replacement costs.

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