The hoisting shutter is a specialized closure device for operating rapid gates. Rapid gates are used to protect machinery units or steel pipes, hanging above the aperture in normal conditions. In case of accidents with generators, water pumps, or steel pipes, they can quickly cut off water flow to prevent the accident from escalating. The closure time of the rapid gate should meet the protection requirements for the machinery unit and steel pipes, generally requiring the closure device to close the rapid gate within 2 minutes. Additionally, to prevent damage to the bottom edge of the gate and the lower sill due to violent impacts, the rapid hoisting closure machine should be equipped with a speed-limiting device. This device should limit the descent speed to 5m/min when the gate approaches the lower sill. However, there are no speed restrictions during the descent process, as long as it does not cause damage to the components of the closure machine.