A fireproof lock box

Abstract

A fireproof lock box, characterized in that it comprises a thin steel frame on the fire-facing surface, a high-temperature heat-insulating thick plate on the fire-facing surface, a high-temperature heat-insulating thick plate on the back-fire surface, a thin steel frame on the back-fire surface, and a thin steel slot on the back-fire surface , thickness adjustment high-temperature heat insulation board, and thin steel slots on the fire side; the thin steel slots on the fire side and the thin steel slots on the back fire side are respectively spot-welded on the thin steel frame on the fire side and the thin steel frame on the back fire side On the steel frame, the high-temperature heat-insulating thick plate on the fire-facing side and the high-temperature heat-insulating thick plate on the back-fired face are respectively inserted on the thin steel frame on the fire-facing side and the thin steel frame on the back-fired side, and the thickness of the high-temperature heat-insulating The hot plate is inserted between the thin steel slot on the fire-facing side and the thin-steel slot on the back-fire side; its superiority lies in: the structure and manufacturing process are simple and practical, and it is suitable for fireproof doors of different thicknesses. A rational combination of high temperature insulation materials enhances both fire integrity and insulation.

Description

(1) Technical field: [0001] The invention relates to a fireproof lock box, which is an important part of fireproof doors used in various buildings. It is made of steel material and high-temperature heat-insulating material. It is installed on the part of the fire-proof lock on the fire-proof door leaf, and surrounds the fire-proof lock body, which plays a role of heat insulation and avoids the phenomenon of overheating in this dangerous part of the fire-proof door. . (two) background technology: [0002] At present, there are nearly 800 fire door manufacturers in my country. Whether it is steel fire doors, wooden fire doors, or other materials, there are two types of processing and production of fire lock boxes, one One is directly formed by pressing and welding thin steel plates, and the other is formed by bonding and forming with fireproof heat insulation boards. Comparing these two lock boxes, in accordance with the current national standard GB7633-2008 "Fire Resistance ...

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Problems solved by technology

Comparing these two lock boxes, in accordance with the current national standard GB7633-2008 "Fire Resistance Test Methods for Doors and Roller Shutters", Article 9.1 "Temperature Measurement", the fire doors are arranged with thermocouples at the range of 50mm to 100mm of the fire lock. To measure the temperature of the back fire surface of the fire door, the first method uses metal steel with excellent thermal conductivity, and the temperature measurement point on the back fire surface often has overheating phenomenon, which leads to the unqualified fire door; the second method uses The most important is fire-proof and heat-insulating materials. The temperature measurement point on the back-fired surface here generally does not exceed the maximum allowable temperature of a single point of 180°C. However, the production process of the lock box of this material is quite troublesome. High strength requirements, relatively high production costs

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