Double-track double-exle fire-proof rolling blind

双轨双轴防火卷帘

Abstract

The utility model relates to a fireproof rolling curtain with double tracks and double shafts, comprising an outer guide track, an inner guide track, a headstock gear, a rolling shaft which is in driving connection with the headstock gear, and a curtain surface rotated on the rolling shaft. The utility model is characterized in that the rolling shaft is provided with an outer rolling shaft and an inner rolling shaft which are provided with the same outer diameter, both of side edges of an outer curtain surface and an inner curtain surface which are rotated on the outer rolling shaft and the inner rolling shaft are respectively embedded in the outer guide track and the inner guide track, and a chain which is sheathed on a chain wheel of the headstock gear is in driving connection with a chain wheel of the outer rolling shaft and a chain wheel of the inner rolling shaft synchronously. The utility model can cause the outer curtain surface and the inner curtain surface to lift synchronously, the further scheme thereof is that a hand pulling ring chain is sheathed with a ratchet wheel of the headstock gear, and the front and the back curtain surfaces are pulled down by hand synchronously when the electric power is cut off.
双轨双轴防火卷帘,包括外导轨、里导轨、启闭机、与启闭机传动连接的卷轴、卷在卷轴上的帘面、其特征在于:所述的卷轴设有外径相同的外卷轴和里卷轴,卷在外卷轴和里卷轴上的外帘面和里帘面两侧边分别嵌入外导轨和里导轨,套在启闭机链轮上的链条与外卷轴链轮及里卷轴链轮同步传动联接,本实用新型可使外、里帘面同步升降,其进一步方案在启闭机棘轮上套有手拉环形链,可在停电时手动同步拉下前后帘面。

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