Concealed up and down shaft device and protective vertical hinged door comprising same

Abstract

The invention belongs to the technical field of door leaf supporting and discloses a concealed up and down shaft device which is used for providing supporting for opening and closing of a door. The concealed up and down shaft device comprises a door frame upper shaft seat, a door frame lower shaft seat, a door leaf upper shaft seat arranged corresponding to the door frame upper shaft seat and a door leaf lower shaft seat arranged corresponding to the door frame lower shaft seat, and further comprises door leaf shafts. The opposite surfaces of the door frame upper shaft seat and the door frame lower shaft seat are provided with blind holes correspondingly. Mounting holes are formed in the positions, corresponding to the blind holes, of the door leaf upper shaft seat and the door leaf lower shaft seat correspondingly. One ends of the door leaf shafts are mounted in the corresponding blind holes, and the other ends of the door lead shafts are arranged in the corresponding mounting holes. The concealed up and down shaft device is simple in structure. The distance from the door leaf upper shaft seat and the door leaf lower shaft seat to the door frame upper shaft seat and the door frame lower shaft seat can be adjusted relatively through hex socket concave end set screws in the door leaf upper shaft seat and the door leaf lower shaft seat. Through the arrangement, the applicability of the concealed up and down shaft device can be improved, and the requirements for installation of doors in various kinds of places can be met.

Description

technical field [0001] The invention relates to the technical field of door leaf support, in particular to a hidden sky-earth axis device used for door leaf support and opening and closing of heavy doors and a protective casement door with the same. Background technique [0002] At present, all kinds of swing doors are connected by ordinary hinges, and some swing doors use sky-earth hinges, but they only support and fasten the door, without the gap adjustment function between the door leaf and the door frame, and the sky-earth hinges are large. Part is integral and cannot be separated. When it is necessary to adjust the gap between the door leaf and the door frame of the swing door, the door leaf must be removed from the door frame before proceeding. The door leaf is removed and readjusted, which is not only time-consuming and labor-intensive, but also very cumbersome. [0003] The prior art sky-earth hinge usually has a lot of exposed parts after it is installed on the sid...

AI Technical Summary

Problems solved by technology

[0002] At present, all kinds of swing doors are connected by ordinary hinges, and some swing doors use sky-earth hinges, but they only support and fasten the door, without the gap adjustment function between the door leaf and the door frame, and the sky-earth hinges are large. Part is integral and cannot be separated. When it is necessary to adjust the gap between the door leaf and the door frame of the swing door, the door leaf must be removed from the door frame before proceeding. Remove the door leaf and readjust, which is not only time-consuming and labor-intensive, but also very cumbersome to operate

[0003] The prior art sky-earth hinge usually has a lot of exposed parts after it is installed on the side-hung door, which is extremely unsightly. Some lawbreakers can take advantage of the opportunity to open the door by disassembling the hinge parts of the heaven and earth axis.

[0004] In addition, the anti-radiation panel of the protective swing door in the prior art is invasively connected to the door leaf, which indirectly leads to radiation loopholes on the anti-radiation panel, provides a certain escape space for the rays, and greatly reduces the radiation protection efficiency

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