Cable explosion-proof manhole cover

Abstract

The invention disclsoes a cable explosion-proof manhole cover. The cable explosion-proof manhole cover comprises a manhole cover main body, wherein an assembling structure capable of being assembled on a well seat wellhead is arranged on one side of the manhole cover main body; a locking structure capable of being locked with the well seat wellhead is arranged on the other side of the manhole cover main body; an exhausting hole penetrating through front and rear surfaces is formed in the manhole cover main body; at least one steel bar grid and a cracking layer capable of being cracked by an air pressure effect in an explosion process are arranged in the exhausting hole of the manhole cover main body; the peripheral edge of the steel bar grid is fixedly connected with the inner wall of the exhausting hole of the manhole cover main body; and the cracking layer is used for fixing and sealing the exhausting hole. When the cable explosion-proof manhole cover is used normally, the steel bar grid can be used for enhancing the intensity of the manhole cover, so that the whole manhole cover has very high compressive strength and shearing strength; the exhausting hole is sealed by the cracking layer so that impurities can be prevented from entering a well; when accidents occur, the cracking layer is cracked to release pressure when the explosion occurs in the well and the explosion impact force can be reduced; and personal Injuries and damages of other equipment, caused by the fact that the manhole cover is blown up when the well on a street is exploded can be effectively prevented, and only the cracking layer needs to be replaced when the manhole cover is not cracked.

Description

technical field [0001] The invention relates to a manhole cover for electric cables, in particular to a cable explosion-proof manhole cover. Background technique [0002] Since the cable body is manufactured in the factory, and the cable connector is installed on site, the quality of on-site construction is affected by man-made craftsmanship and the installation environment, and may not meet the quality control requirements in the factory. Therefore, the cable connector is often the weak point of the cable system. Most of the cable wells are located in densely populated areas such as municipal roads. If the middle joint of the cable fails and explodes, the manhole cover will blow up and the fire will hurt passers-by and damage buildings and other facilities. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a cable explosion-proof manhole cover, which can effectively prevent personal injury and other equipment dama...

AI Technical Summary

Problems solved by technology

[0002] Since the cable body is manufactured in the factory, and the cable connector is installed on site, the quality of on-site construction is affected by man-made craftsmanship and the installation environment, and may not meet the quality control requirements in the factory. Therefore, the cable connector is often the weak point of the cable system.

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