Steel structure movable threshold biparting fence and airtight door

Abstract

The invention provides a steel structure movable threshold biparting fence and airtight door. The steel structure movable threshold biparting fence and airtight door includes biparting door bodies, arotating handle, a connecting hinge, a control switch, a cover plate, a mounting groove, ground, a sealing threshold, a sealing pad, a lifter, a limit groove, a fixing hole, a placement table, a dust-proof mat and a thread hole. The steel structure movable threshold biparting fence and airtight door has the beneficial effects that the cover plate is installed at the top of the mounting groove, sothat the mounting groove is flush with the ground during everyday use to not affect normal use of the ground; the sealing threshold in the mounting groove can move upward to contact with the bottom ofa biparting door to seal the gap between a threshold and the ground if necessary, and the problem that all kinds of external hazards penetrate through the biparting door bodies to cause loss of lifeand property can be avoided; and a bottom lifter can control the sealing threshold to move, and the operation needs less labor and time. The steel structure movable threshold biparting fence and airtight door is easy to use, the flexible performance of the threshold is ensured, a sealing function can be acted in an emergency, and the smooth of everyday ground can be ensured.

Description

technical field [0001] The invention relates to a protective airtight door, in particular to a double-leaf protective airtight door with a steel structure living threshold, which belongs to the application field of civil air defense equipment. Background technique [0002] The protective airtight door can block the shock wave and meet the corresponding resistance requirements. Although the price of the steel structure door is relatively high, and the anti-early nuclear radiation performance is also poor, but because of its light weight and flexible opening and closing, it is usually used for relatively large vehicle entrances and exits. The steel protective airtight door adopts the flat opening type. Divided according to the number of doors, there are two types of air defense doors: single air defense door and double air defense door. Single-leaf doors are generally used for smaller-sized personnel entrances and exits, and double-leaf doors are generally used for larger-si...

AI Technical Summary

Problems solved by technology

[0003] But there are still some deficiencies in the existing double-leaf protective airtight door with steel structure trap door sill in use

The existing double-leaf protective airtight door with steel structure living threshold is complex in structure, cumbersome to use, and has limited airtight effect. It cannot completely seal the gap between the ground and the protective door body, and it is easy to cause casualties and economic losses when used in an emergency

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