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.

CN100567689CActive Publication Date: 2009-12-09ENG DESIGN RES INST OF SECOND ARTILLERY PLA
6 Cites 1 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2009-12-09

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

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.
Need to check novelty before this filing date? Find Prior Art

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 ...

Examples

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...