CN-224214043-U - Folding protective airtight door

CN224214043UCN 224214043 UCN224214043 UCN 224214043UCN-224214043-U

Abstract

The utility model provides a folding protective airtight door which comprises a door frame wall and a door leaf assembly, wherein the door leaf assembly comprises a plurality of door leaf units, a first hinge and a bolt mechanism are arranged between every two adjacent door leaf units, the first hinge and the bolt mechanism are respectively located on two sides of each door leaf unit, the bolt mechanism comprises a bolt and a bolt seat, the bolt seats are respectively arranged on every two adjacent door leaf units, bolt holes are formed in the bolt seats, when the door leaf assembly is in an unfolding state, the bolts are inserted into the bolt seats of the adjacent door leaf units, and when the door leaf assembly is in a folding state, the bolts are pulled out from the bolt seats of the adjacent door leaf units. The door leaf assembly is formed by connecting a plurality of door leaf units through hinges, when the latch is pulled out, the door leaf units can be folded in a Z shape, when the door leaf assembly is opened, the door leaf assembly can be folded and retracted, the reserved space for door leaf movement is greatly reduced, the door leaf assembly is particularly suitable for underground civil air defense engineering with limited space, and the flexibility and the practicability of overall space planning are improved.

Inventors

FU YUEHAI

Assignees

杭州钱江人防设备有限公司

Dates

Publication Date: 20260508
Application Date: 20250530

Claims (7)

1. The folding protective airtight door is characterized by comprising a door frame wall and a door leaf assembly, wherein the door leaf assembly comprises a plurality of door leaf units, a first hinge and a bolt mechanism are arranged between every two adjacent door leaf units, the first hinge and the bolt mechanism are respectively positioned at two sides of each door leaf unit, the bolt mechanism comprises a bolt and a bolt seat, the bolt seats are respectively arranged on two adjacent door leaf units, and bolt holes are formed in the bolt seats; When the door leaf assembly is in the unfolded state, the latch is inserted into the latch seat of the adjacent door leaf unit, and when the door leaf assembly is in the folded state, the latch is pulled out from the latch seat of the adjacent door leaf unit.
2. A folding protective airtight door according to claim 1, wherein the door leaf unit comprises a door leaf outer shell in which structural reinforcement and a concrete filler are provided.
3. The folding type protective airtight door according to claim 2, wherein the structural reinforcement is in a long strip shape, the structural reinforcement is arranged along the height direction of the door leaf unit, and the cross-sectional area of the structural reinforcement is in a shape of a "table".
4. The folding protective airtight door of claim 1, wherein the door frame wall is provided with a channel, and a sealing strip is provided at the periphery of the channel.
5. The folding protective airtight door of claim 1, wherein one side of the door leaf assembly is connected to the door frame wall through a second hinge, and a locking mechanism is provided on the door leaf assembly.
6. The folding protective airtight door of claim 1, wherein a gasket is provided on a connection surface of the adjacent door leaf units, and seals a gap between the adjacent door leaf units when the door leaf assembly is in the unfolded state.
7. The folding protective airtight door of claim 1, wherein the bolt comprises a bolt body, a hole is formed in the bolt body, a piston and a threaded body are arranged in the hole, the threaded body is in threaded fit with the inner wall of the hole, the threaded body is connected with the piston through a connecting rod, a lubricating grease storage space is formed between the piston and the bottom of the hole, lubricating grease is stored in the lubricating grease storage space, and an overflow hole communicated with the lubricating grease storage space is formed in the bolt body.

Description

Folding protective airtight door Technical Field The utility model relates to the technical field of protective doors, in particular to a folding protective airtight door. Background In some urban underground civil air defense engineering facilities, a plurality of protective airtight doors are arranged, and the protective airtight doors are used for blocking nuclei, preventing radioactive contamination and chemical warfare agents from penetrating into the engineering facilities. The prior protective sealing door structure is shown in fig. 6, and comprises a door frame wall 1 and a door leaf 8, wherein a channel is arranged on the door frame wall 1, and one side of the door leaf is hinged with the door frame wall 1 through a hinge. However, the door leaf 2 in the existing protective airtight door is of an integrated structure, when the door leaf 8 is opened or closed, the sweeping area of the door leaf 8 is larger, and a larger space is reserved for opening and closing the door leaf, so that the normal opening and closing of the door leaf can be ensured, the reserved space cannot be normally used, and the space utilization rate in civil air defense engineering facilities is reduced. Disclosure of Invention The utility model aims to solve the defects in the prior art and provides a folding protective airtight door. The utility model aims at realizing the technical scheme that the folding protective airtight door comprises a door frame wall and a door leaf assembly, wherein the door leaf assembly comprises a plurality of door leaf units, a first hinge and a bolt mechanism are arranged between every two adjacent door leaf units, the first hinge and the bolt mechanism are respectively positioned at two sides of the door leaf units, the bolt mechanism comprises a bolt and a bolt seat, the bolt seat is respectively arranged on two adjacent door leaf units, and a bolt hole is formed in the bolt seat; When the door leaf assembly is in the unfolded state, the latch is inserted into the latch seat of the adjacent door leaf unit, and when the door leaf assembly is in the folded state, the latch is pulled out from the latch seat of the adjacent door leaf unit. Preferably, the door leaf unit comprises a door leaf outer shell, and a structural reinforcement and a coagulation filling body are arranged in the door leaf outer shell. Preferably, the structural reinforcement is in a long strip shape, the structural reinforcement is arranged along the height direction of the door leaf unit, and the cross-section of the structural reinforcement is in a shape of a Chinese character 'ji'. Preferably, a channel is arranged on the door frame wall, and a sealing strip is arranged on the periphery of the channel. Preferably, one side of the door leaf assembly is connected with the door frame wall through a second hinge, and a locking mechanism is arranged on the door leaf assembly. Preferably, a gasket is provided on the connection surface of adjacent door leaf units, and seals the gap between adjacent door leaf units when the door leaf assembly is in the deployed state. Preferably, the bolt comprises a bolt body, a hole channel is formed in the bolt body, a piston and a threaded body are arranged in the hole channel, the threaded body is in threaded fit with the inner wall of the hole channel, the threaded body is connected with the piston through a connecting rod, a lubricating grease storage space is formed between the piston and the bottom of the hole channel, lubricating grease is stored in the lubricating grease storage space, and an overflow hole communicated with the lubricating grease storage space is formed in the bolt body. The beneficial effects of the utility model are as follows: 1. the door leaf assembly is formed by connecting a plurality of door leaf units through hinges, when the bolts are pulled out, the door leaf units can be folded in a Z shape, when the door leaf assembly is opened, the door leaf assembly can be folded and retracted, the space reserved by door leaf movement is greatly reduced, the saved space can be used for additionally arranging equipment, material storage areas or passing channels, the door leaf assembly is particularly suitable for underground civil air defense engineering with limited space, and the flexibility and the practicability of overall space planning are improved. 2. According to the utility model, the door leaf assembly is split into a plurality of door leaf units, the split type structural design greatly reduces the weight of a single part, no heavy equipment is needed during installation, the single door leaf units can be carried and installed through a small hydraulic lifting device or a chain block, the requirements on construction conditions and equipment are reduced, and the installation difficulty of the door leaf is greatly reduced. Drawings Fig. 1 is a front view of the present utility model. Fig. 2 is a schematic view of the present utility model in a closed state. Fig.