Screen frame assembly, protective screen and attached lifting scaffold

The utility model provides a screen frame assembly, a protective screen and an attached lifting scaffold. The screen frame assembly is used for being connected with a fixing base, the fixing base is used for being connected with a vertical rod, a pin hole is formed in the fixing base, and the screen frame assembly comprises a frame, and the bolt piece is fixedly connected with the frame, and the bolt piece is used for being inserted into the pin hole, so that the frame is arranged on the fixed seat. According to the screen frame assembly provided by the utility model, the bolt pieces are fixedly arranged on the frame, so that the frame can be arranged on the fixed seat only by aligning the bolt pieces with the pin holes and inserting the bolt pieces into the pin holes of the fixed seat. Compared with the prior art that the cylinder on the screen frame needs to be aligned with the pin hole in the fixing seat, then the plug pin is aligned with the cylinder and penetrates through the cylinder and the fixing seat