Fixing ring used for fixing lamp cover of industrial illumination lamp

The invention discloses a fixing ring used for fixing a lamp cover of an industrial illumination lamp. The fixing ring is cylindrical and the section of the fixing ring is L-shaped; the lamp cover can be arranged in the fixing ring in a sleeving manner; the fixing ring comprises an upper semicircle part, a vertical section, an arc-shaped section, a horizontal section and a lower semicircle part; a plurality of through holes are formed in an annular face of the vertical section; the upper sides of the through holes are provided with reversed sheets which obliquely and downwards stretch into the fixing ring; the distance from the lower ends of the reversed sheets to the inner side face of the horizontal section of the fixing ring is less than the thickness of a horizontal connection section of the lamp cover and the reversed sheets are used for fixing the lamp cover; reversing hooks are further arranged on the outer sides of the fixing ring body and can be connected with a hinge arranged on a lamp holder; the lamp cover is driven by the reversing hooks to do opening-closing rotary movement relative to the lamp holder around the hinge; a backward buckling hook is further arranged on the outer side, which is opposite to the reversing hooks, of the fixing ring; the fixing ring can be connected and buckled on a hasp on the lamp holder through the backward buckling hook. The fixing ring used for fixing the lamp cover of the industrial illumination lamp is simple in structure, simple and convenient to operate and low in cost.