Small-sized rapid rolling door

Abstract

The invention relates to a small-sized rapid rolling door which comprises a door frame, a door curtain and a motor, wherein the door frame is composed of a support beam and upright posts; the door curtain is formed in a way that a plurality of curtain sheets are connected; a rotatable transmission shaft is installed in the support beam and is driven by the motor; linear guide rails are arranged on the inner sides of the upright posts; spiral guide rails are arranged on both sides of the support beam, and the outer ends of the spiral guide rails are connected with the linear guide rails; guide wheels are installed on both ends of each curtain sheet and are positioned in the guide rails; connecting plates are installed on both ends of the curtain sheet at the bottom of the door curtain; chains are installed between the connecting plates and the transmission shaft; the bottom of the door curtain is pulled by the transmission shaft through the chains. By using the spiral guide rails arranged on the small-sized rapid rolling door, the curtain sheets of the rolled door curtain do not contact with one another, so that the size of the rolled door curtain is not increased by the connecting positions of the bent curtain sheets; by regulating dimension parameters of the spiral guide rails, the distance between the contactless curtain sheets can be further reduced, and the size of the rolled door curtain can be reduced, thereby reducing the size of the support beam.

Description

technical field [0001] The invention relates to a rolling door, in particular to a fast rolling door with small volume. Background technique [0002] The entrance and exit space of the underground garage is small, and doors need to be installed at the entrance and exit. The most suitable door is the rolling door. In order to ensure the airtightness, safety and smoothness of passage in the underground garage, the opening and closing of the door needs to be as fast as possible, but the entrance and exit of the underground garage are very wide, so the width of the door body where the door is installed is large, and the weight of the curtain is heavy. When opening and closing, the running speed of the door curtain cannot be quickly accelerated to the highest speed, which affects the overall speed of door opening and closing. And the rolling shutter door that uses at present, is used for packing up and depositing the support beam of door curtain when rolling door opens the door ...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the disadvantages of the existing rolling doors, such as slow speed and large space, the present invention designs a small-volume fast rolling door

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