A special fire shutter
A fire-resistant roller shutter, super-grade technology, applied in fire doors, fire rescue, dental drilling, etc., can solve problems such as difficult access to roller shutters, gaps, and lack of protection for safety, so as to increase the contact area and improve fire resistance , Improve the effect of sealing
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[0026] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0027] Such as Figure 1-4 As shown, the present embodiment is a special-grade fire shutter, including an outer cord 1, an inner cord 2, a winding device 3, an automatic control device 4 and a guide rail 5; the outer cord 1 is arranged on the inner cord 2; the winding device 3 includes a first reel 31, a second reel 32, and a door rolling machine 33, and the first reel 31 and the second reel 32 are simultaneously controlled and driven by the door rolling machine 33.
[0028] A plurality of steel wire ropes 6 are arranged in the longitudinal direction of each curtain; the top of the steel rope 6 is connected to the corresponding reel, and the bottom of the steel rope 6 is fixed on the bottom plate 7; There is a splint 8, and the splint 8 on the front side is connected with the splint 8 on the reverse side through a screw thread and a nut assembly 9, and the end of th...
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