High-speed drilling and milling center machine protecting door with improved structure

The utility model discloses a high-speed drilling and milling center machine protecting door with an improved structure. The protecting door comprises a protecting door body, a fixing supporting plate and a fixing supporting frame. The fixing supporting frame comprises a limiting vertical plate, a fixing reinforcing rib, a supporting vertical plate and a supporting transverse plate. The protecting door body comprises a protecting door plank and a door plank supporting frame. An idler wheel installing shaft is embedded into an idler wheel installing gap and comprises an idler wheel installing rod part and a large-head fixing part. The limiting vertical plate is provided with a limiting stop dog. A movable idler wheel, an interval sleeve and an elastic clamping spring are installed on the idler wheel installing rod part. An idler wheel limiting ring groove is formed in the movable idler wheel. A transverse plate limiting strip is installed on the supporting transverse plate in a screwed mode. The supporting transverse plate is provided with a movable pin installing block. A limiting movable pin, a spring and a limiting screw are installed in a movable pin installing hole in the movable pin installing block. An installing block stop shoulder is arranged in the movable pin installing hole. The limiting movable pin is provided with a movable pin stop shoulder. A limiting hole is formed in the door plank supporting plate. The protecting door has the advantages of being novel in design, simple in structure, convenient to install, good in stability and reliability, and high in safety and the like.