目前,大多数煤矿中离心式抽风机风门的开启和关闭,均是采用手摇绞车和滑轮配套的提升装置,这种装置固然有其优点,但也存在诸如安装面积较大,提升速度较慢和要向外购货等不足之处。我矿1983年在安装一台4-72-11No16B型离心式抽风机时,自行设计和制作了如图所示的手拉式风门提升装置。实践证明:该装置具有结构简单紧凑,操作方便可 At present, most of the coal mine centrifugal fan blower door opening and closing are used hand winch and pulley supporting lifting device, although this device has its advantages, but there are also such as larger installation area, slower lifting speed And to purchase and other shortcomings. When I installed a 4-72-11No16B Centrifugal Exhaust Fan in 1983, I mine designed and manufactured a hand-held throttle lifter as shown. Practice has proved that: The device has a simple and compact structure, easy to operate