Cable tunnel miniature automatic fire-proof door

Abstract

The invention provides a miniature automatic fire-proof door in a cable tunnel. A combined-type assembly door frame is adopted, and door leaf side gears are driven through stepping motors mounted in aleft door frame body and a right door frame body to drive door leaves to rotate around bearings to achieve opening and closing, transmission chains are shorter, the structure is compact, and movementis smoother. A door opening and closing position sensor is arranged, the opening and closing states of the left door leaf and the right door leaf can be detected independently, and indicator lamps can display the working state in real time. The two-hinged-door type structure is adopted, the spaces for rail erecting are reserved on the door leaves, when a rail robot needs to pass through the automatic fire-proof door, a door opening instruction is sent to the automatic fire-proof door, the left door leaf and the right door leaf can be opened in sequence according to the order and stopped untilthe position sensor is triggered, after the rail robot passes along the rail from the interior of the automatic fire-proof door, a door closing instruction is sent, the left door leaf and the right door leaf are closed in sequence according to the order until the position sensor is triggered, and then the movement is stopped.

Description

technical field [0001] The invention belongs to the application field of fire doors, in particular to a miniature automatic fire door in a cable tunnel. Background technique [0002] Cable tunnels and cable-related pipe galleries have become an important part of modern urban public facilities. In recent years, orbital robots have begun to replace manual inspections and inspections of the above-mentioned internal facilities. The rail-mounted robot is a new type of integrated intelligent transportation inspection system with monitoring, inspection, and security detection and maintenance methods. The rail bears the load and guide function of the robot body movement, and needs to be continuously erected in the cable tunnel. Firewalls and fire doors are installed at intervals in the cable tunnel. In order to prevent harmful modification of existing fire protection facilities, when the orbital robot passes through the fire doors, it is necessary to reduce the outer dimensions of t...

AI Technical Summary

Problems solved by technology

[0003] The prior art discloses an automatic fire door for a comprehensive pipe gallery. It is necessary to modify the existing fire doors in the pipe gallery. The two doors can slide and open in parallel through the push and pull of the electric push rod, and adopt the form of a sliding door (translational door) The outer dimension of the entire fire door is increased, and the passable space of the door opening after the door leaf is translated is also limited by the stroke of the electric push rod

[0004] The prior art discloses the use of an independent automatic fire door, using a common automatic door opener to open the door leaf, and the fire door is installed on the firewall through a common hinge (hinge). The size of the opener (the electric door opener drives the pull rod to realize the side-opening door) is relatively large, and its layout in a narrow tunnel has limitations, and the workload of on-site construction is relatively large

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