High anti-violence type underground refuge chamber blast airtight door

Abstract

The invention discloses a high anti-violence type underground refuge chamber blast airtight door. The high anti-violence type underground refuge chamber blast airtight door comprises an airtight door body, wherein the back surface of the airtight door body is provided with multiple longitudinal reinforcing ribs which are arranged in parallel, the middle part of the airtight door body is provided with multiple first horizontal reinforcing ribs which are located in the same straight line, the upper part and the lower part of the airtight door body are both provided with multiple second horizontal reinforcing ribs which are located in the same straight line, and third horizontal reinforcing ribs are arranged between the first horizontal reinforcing ribs and the second horizontal reinforcing ribs; a grid type reinforcing rib framework is formed after the first horizontal reinforcing ribs, the second horizontal reinforcing ribs and the third horizontal reinforcing ribs are both welded on the longitudinal reinforcing ribs. According to the high anti-violence type underground refuge chamber blast airtight door disclosed by the invention, when the airtight door body suffers from an impact effect as a novel grid type reinforcing rib framework is formed by adding the using amount of steel in a tension zone at the other side of each reinforcing rib, the impact load can be effectively borne, and the undamaged structure of the airtight door body can be ensured.

Description

technical field [0001] The invention relates to the technical field of underground refuge chamber manufacturing, in particular to a protective airtight door of a high anti-riot type underground refuge chamber. Background technique [0002] In the process of coal mine production, there are always threats from objective factors such as water, fire, gas, coal dust, and roofs underground. Some mines also have new dangerous and harmful factors such as geothermal heat, corrosive substances, and radioactive substances. These areas may have high temperature, high humidity, high dust flying, high gas concentration, corrosive gas, many disaster-causing factors, high risk level, and the risk of catastrophic accidents is very high. [0003] The interim regulations issued by the state on the construction and management of emergency avoidance systems in coal mines are formulated in accordance with the spirit of the "Notice of the State Council on Further Strengthening Enterprise Safety Pr...

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Problems solved by technology

[0004] In order to improve the blast resistance of the existing protective airtight door structure of the underground refuge chamber, it is mainly achieved by thickening the material of the door panel, or reducing the size of the door panel, or increasing the cross-sectional area of ​​the horizontal and vertical rectangular ribs on the back of the door panel. It can improve the impact resistance to a certain extent, but due to the large amount of steel used, there are defects such as heavy product weight and high cost

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