Fire resisting shutter capable of controlling slip speed and stopping falling at any time
A technology of fire shutter and speed, which is applied in the direction of fire doors, door/window protection devices, shutters/movable grilles, etc. It can solve the problem of closing and isolating in the fire area, unable to effectively control the descent and stop of the shutter, and the shutter Problems such as the failure of the electric controller can achieve the effect of increasing the escape time
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[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0022] see Figure 1-3 , a fire-proof rolling shutter that controls the sliding speed and can stop falling at any time, including a rolling shutter box 1, the inside of the rolling shutter box 1 is movably connected with a rotating shaft 2, the outer side of the rotating shaft 2 is fixedly connected with a reel 3, and the outer side of the reel 3 A roller shutter 4 is installed, and the bottom of the fireproof roller shutter 4 is provided with a counterweight,...
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