Pit elbow pipe drilling tool

The utility model provides a pit elbow pipe drilling tool. The pit elbow pipe drilling tool comprises a bottom plate, a positioning assembly, a hole positioning mechanism and a pressing mechanism. Thepositioning assembly and the hole positioning mechanism are installed at the two ends of the bottom plate respectively. And a positioning groove matched with the bent pipe in shape is formed in the positioning assembly. According to the pit elbow pipe drilling tool, an elbow pipe is placed in the positioning assembly, the rapid clamp and the guide column in the pressing hole positioning mechanismare downwards pressed, the platform positioning block and the connecting plate are driven to downwards press and position a pit platform of the pipe, the pit platform is tightly pressed by the pressing platform, and then the elbow pipe is fixed by the pressing mechanism. At the moment, the drill bit drills a hole through the drill bushing and the platform positioning block, after the hole is drilled, the pressing mechanis