Network security appliance based on redundant power supply

A network security appliance based on a redundant power supply, comprising a cabinet (1), a redundant power supply (2) being fixedly mounted at a bottom part of a left side of an inner wall of the cabinet (1), a mainboard (3) being fixedly mounted on a front side of the inner wall of the cabinet (1), and two electric fans (4) being fixedly mounted at a bottom end inside the cabinet (1), wherein two rings (5) are fixed to a front side of an outer wall of the redundant power supply (2), an electric telescopic rod (8) is fixedly mounted on inner walls of the rings (5), a rectangular rod (9) is fixed to a top surface of a telescopic end of the electric telescopic rod (8), several vertical columns (10) are fixed to a top surface of the rectangular rod (9), a cover plate (11) is fixed at a top surface of the cabinet (1), a top surface of the cover plate (11) is provided with several exhaust holes, the cover plate (11) is provided with several rectangular slots, a strip-shaped plate (12) is rotatably mounted on a left or right side of an inner wall of each rectangular slot of the cover plate (11), a first torsional spring is arranged between each strip-shaped plate (12) and the cover plate (11), and each strip-shaped plate (12) is located on a movement trajectory of a corresponding vertical column (10);

• each vertical column (10) is provided with a chamber inside;
• a warning assembly is disposed inside each vertical column (10), the warning assembly comprises a conductive block (13), the conductive block (13) is fixed to a bottom end of an inner wall of the vertical column (10), the conductive block (13) is connected to a wire of the redundant power supply (2), a rubber column (14) is slidably mounted on the inner wall of the vertical column (10), a first spring is arranged between the rubber column (14) and the conductive block (13), an LED lamp (15) is fixedly mounted on a top surface of the rubber column (14), a conductive rod (16) penetrates through and is fixedly mounted on a bottom surface of the rubber column (14), the conductive rod (16) is fixedly connected to the LED lamp (15), a heat accumulation prevention device (6) is coupled to a top surface of the rectangular rod (9), and a fire prevention device (7) is coupled to a bottom surface of the rectangular rod (9).