Fireproof protective sealing door for single-leaf concrete structure of high-speed railway and subway tunnel

Abstract

The invention belongs to the technical field of protective engineering, and discloses a fireproof protective sealing door for a single-leaf concrete structure of a high-speed railway and a subway tunnel. The single-leaf concrete structure comprises a door frame, hinges, door leaves, a fireproof sealing part, a linkage spring lock, a handle, a transmission mechanism, an automatic return device, a mandrel and a torsion spring, wherein the door frame is arranged in the tunnel; the hinge is positioned at one side of the door frame; the door leaves are door leaves of concrete structures, and the door laves are hinged with the door frame through the hinges; the fireproof sealing part is arranged on fitted surfaces of the door frame and the door leaves; the linkage spring lock comprises a base and locking head assemblies, and is mounted on the door leaves; the handle is mounted on the base; the transmission mechanism is separately connected to the handle and the locking head assemblies; the automatic return device comprises a base which is arranged above the hinges; the mandrel is mounted on the base; the torsion spring sleeves outside the mandrel; one end of the torsion spring is an internal connecting end, and is connected to the base; and the other end of the torsion spring is an external connecting end which is connected to the top surfaces of the door leaves. According to the scheme adopted by the invention, the fireproof protective sealing door can realize simultaneously controlling the multiple locking head assemblies to unlock or lock, improves locking effect, and improvesfirmness and reliability during locking.

Description

technical field [0001] The invention belongs to the technical field of protection engineering, and in particular relates to a single-leaf concrete structure fire protection airtight door for high-speed railway and subway tunnels. Background technique [0002] Installing a fire door in the passage can make it possible that when an accident occurs in the passage, such as an explosion or fire, the accident only has a destructive effect on the passage on one side of the fire door, and has almost no destructive effect on the passage on the other side of the fire door. [0003] In the event of an accident, effectively closing the fire door is a key measure to avoid the expansion of the damage caused by the accident. In the prior art, a handle is usually used to control a lock to unlock or lock, that is, a lock is passed between the door leaf and the door frame. Linked to play the effect of locking the door, its locking effect is not ideal. Contents of the invention [0004] In ...

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Problems solved by technology

[0003] In the event of an accident, effectively closing the fire door is a key measure to avoid the expansion of the damage caused by the accident. In the prior art, a handle is usually used to control a lock to unlock or lock, that is, a lock is passed between the door leaf and the door frame. Connected to play the effect of locking the door, the locking effect is not ideal

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