Fireproof A-level tunnel cable trench cover plate

The invention relates to a fireproof A-level tunnel cable trench cover plate, and belongs to the technical field of cable trench cover plates. Comprising a cover plate body, and the bottom of the cover plate body is connected with a fire extinguishing device. The fire extinguishing device comprises a tank body and a trigger device. A spray head is arranged at the bottom of the tank body, and a fire extinguishing agent is filled in the tank body. And when a fire disaster occurs, the triggering device promotes the fire extinguishing agent in the tank body to be sprayed out from the spray head. When a cable trench is on fire, the fire extinguishing device can automatically extinguish multiple fire points, fire extinguishing operation is completed in the first time, and disaster situation expansion is avoided. 本发明涉及一种防火A级隧道电缆沟盖板，属于电缆沟盖板技术领域。包括盖板本体，所述的盖板本体底部连接有灭火装置。所述的灭火装置包括罐体以及触发装置。所述的罐体底部设有喷头，所述的罐体内部填充有灭火剂。所述的触发装置在发生火灾时，促使罐体内部的灭火剂从喷头喷出。本发明在电缆沟起火时，可以自动多着火点进行扑灭，第一时间完成灭火作业，避免灾情扩大。