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Double-leaf protection closed door for large underground space cave entrance

A technology for underground space and airtight doors, which is used in sealing devices, anti-war damage, construction, etc., can solve problems such as damage and uneven compression of rubber strips, and achieve the effect of reducing costs, uniform gaps, and reducing the amount of civil construction.

Active Publication Date: 2009-12-09
ENG DESIGN RES INST OF SECOND ARTILLERY PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of this invention is to provide a new type of double-leaf protective airtight door for large underground space openings. It is necessary to solve the problem of sealing the middle seam, avoiding the damage of the shock wave to the seam sealing strip, and also to solve the lap between the middle seam and the upper and lower door frames. At the same time, it also solves the problem of uneven compression of the rubber strips on both sides of the door frame caused by the excessive width of the door leaf; and solves the problems of canceling the floor groove, reducing the cost, simplifying the construction difficulty, and improving the conversion efficiency of peacetime and wartime

Method used

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  • Double-leaf protection closed door for large underground space cave entrance
  • Double-leaf protection closed door for large underground space cave entrance
  • Double-leaf protection closed door for large underground space cave entrance

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Experimental program
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specific Embodiment approach

[0032] The specific implementation method is as follows: the middle seam edge of the above-mentioned left door leaf is welded into a closed corner frame shape by a channel steel, an L-shaped steel and a left door leaf inclined steel plate 18; the middle seam edge of the right door leaf is welded by two relative channel steels Become a rectangular frame, weld one outside the rectangular frame to coincide with the missing corner of the left door leaf, a convex angle formed by the outer extension plate 20 of the rectangular frame and the inclined steel plate 17 of the right door leaf. The above-mentioned left and right elastic sealing rubber sheets can be sponge sealing rubber sheets or rubber sealing rubber sheets.

[0033] The left door leaf at the center seam is welded into a triangle with a steel plate, and the hypotenuse of the triangle is a slanted steel plate. Cut off a part of the left door leaf, weld a steel plate with the same inclination as the right door leaf slanted s...

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Abstract

A new double-leaf protective airtight door for a large underground space opening, including a door leaf, a door frame, a sealing strip, a hinge, and a linkage locking mechanism; , installed in the abdominal cavity of the door leaf, the connecting rod between the two rows of locks is connected to the gear box in the middle that can be operated by a rocker, each lock is composed of a bevel gear transmission system and a connecting rod; the left and right door leaves include inner panels , the outer panel and the frame of the door leaf, one of the door leaves has a chamfered edge on the middle seam edge, and the other door leaf has a convex angle on the middle seam edge, so that the middle seam between the two door leaves is a folded surface, and the chamfered slope and the convex angle slope are tightly fitted. With the same inclination, the chamfered slope and the protruding slope are all pasted with elastic sealing rubber sheets. This kind of slope sealing solves the sealing problem of the door leaf and the door frame, and effectively avoids the damage of the shock wave to the seam sealing strip.

Description

(1) Technical field [0001] The invention relates to a protective airtight door for an underground space opening. (2) Background technology [0002] An existing protective airtight door for an opening in an underground space includes a door leaf, a door frame, a sealing rubber strip, a hinge, and a linkage locking mechanism. The unresolved technical problems are: protective airtight doors basically need to be equipped with a trough, and a cover plate is required on the trough. The existence of the cover plate is prone to problems and troublesome operation, which greatly increases the transition time between peacetime and wartime and poses a safety hazard. At the same time, it is easy to form an uncivilized dead angle; and without the overall lifting function, it is difficult to adapt to the lifting height within the door leaf sweep width caused by the ubiquitous large slope and large longitudinal slope; without the overall translation function, it cannot solve the problem of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E06B5/10E06B7/22E05B63/14
Inventor 张伟刚胡玉镜刘斌生谢育新国胜兵
Owner ENG DESIGN RES INST OF SECOND ARTILLERY PLA
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