| 摘要 |
<p>The present invention relates to a device for opening and closing an electric explosion-proof shutter comprising: an opening and closing control terminal block transmitting a signal obtained from a detector when a fire occurs with a chain guide and a brake through an explosion-proof electric wire pipe; the chain guide and the brake releasing pressurizing and breaking a brake lever up through the signal transmitted to the opening and closing control terminal block to driver an explosion-proof motor; the explosion-proof motor operated by the signal of the chain guide and the brake to operate a decelerator; the decelerator rotating a shaft where an electric explosion-proof shutter is wound with operation of the explosion-proof motor to enable the electric explosion-proof shutter to be descended; and a limit switch limiting a descending height and the ascending height of the electric explosion-proof shutter. According to the present invention, the device for opening and closing an electric explosion-proof shutter has the explosion-proof electric wire pipe which is properly operated without being damaged by an external impact to enable the device to be properly operated with respect to an explosion when the fire occurs.</p> |
