Precautions for fire doors:
First, the installation of fire doors should be based on the types of fire doors used, using appropriate installation methods.
Second, the door frame of the fire door can be fixed to the wall with expansion bolts, or iron pieces can be embedded in the hole when building the wall, and welded with the door frame connector when installing.
Third, no matter what connection method is adopted between the door frame and the wall, there should be no less than three anchor points on each side, and the connection is firm.
Four, when installing the fire door, should first find straight, hanging, temporary fixed after appropriate size, and correction, adjustment, and correct the rear can be connected and anchored.
Five, the sliding door should be flexible after installation; Horizontal doors are easy to open and close.
Six, fire door closers must be installed on the door, to install the sequencer when opening the door.
Seven, fire door handle, fire lock and other hardware accessories, must be complete.
Eight, and the ground plane clearance should not exceed 5 mm. ..
Extended data:
The function of installing door closers:
The significance of the door closer is not only to automatically close the door, but also to protect the door frame and door body (smooth door closing). More importantly, door closers have become an indispensable part of intelligent management of modern buildings. Door closers are mainly used in commercial and public buildings, but also in families. The main purpose is to automatically close the door to limit the spread of fire and ventilation in the building.
Principle:
When the door is opened, the door body drives the connecting rod to move, and the rotation of the transmission gear drives the rack plunger to move to the right. When the plunger moves to the right, the spring is compressed, and the hydraulic oil in the right chamber is also compressed. The check valve ball on the left side of the plunger opens under the action of oil pressure, and the hydraulic oil in the right chamber flows into the left chamber through the check valve. When the door opening process is completed, the spring is compressed during the door opening process, and the accumulated elastic potential energy is released, which pushes the plunger to move to the left and drives the transmission gear and the connecting rod of the door closer to rotate, thus closing the door.
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