苏联沙洛明同志设计了一种简便的砂轮机防护罩,能安装在任何倾斜的平面上。防护罩上设有清除玻璃面上的污穢的装置,並且可以迅速更换玻璃,这种防护罩其有一般防护罩所没有的优点。防护罩的外形如图1所示,它的详细构造如图2。活动式框架9是用钢管制成的,在钢管全长上切有槽口,槽口中嵌有橡皮垫3,用来夹紧玻璃片2。橡 Comrade Salimod of the Soviet Union devised a simple grinder shield that can be mounted on any inclined plane. The cover is provided with means to remove the contamination on the glass surface, and the glass can be quickly replaced. Such a cover has the advantages of a normal cover. Protective shell shape shown in Figure 1, its detailed structure shown in Figure 2. The movable frame 9 is made of steel pipe. A notch is cut in the whole length of the steel pipe. A rubber mat 3 is embedded in the notch to clamp the glass sheet 2. oak