The multifunctional AT mechanical top drive drill is a drilling equipment independently developed by our company, integrating water drilling and air drilling functions. The drill adopts a 5-speed manual automotive transmission gearbox, with a mechanical top drive power head, wide speed range, convenient forward/reverse rotation switching, high mechanical transmission efficiency, significantly reduced power consumption, and enhanced efficiency and energy savings. It solves the difficulties of air hammer drills struggling in soil layers and the low construction efficiency of rotary drills in hard rock layers, gravel, and pebble layers. This drill can be used for core sampling in exploration as well as drilling wells.