The utility model with the new drilling rig has been announced, including drill, drill rod and a handle, the back part of the drill bit and drill pipe is fixed around the rock powder dredging pipe, the pipe is simultaneously provided with fusiform hole expansion can move along the drill pipe under the body, the fusiform body diameter with suitable reaming the drill head, the fusiform reaming body is provided with a cutting tooth, the utility model can effectively avoid the accident, and the smooth liquidation of borehole rock drilling speed.
【技术实现步骤摘要】
【技术保护点】
1.新型钻孔用钻机,其特征在于:包括钻头、钻杆和手柄,所述钻头的后部并围绕钻杆固定有捞岩粉管,在所述钻杆上同时设有可沿钻杆上下移动的仿锤形扩孔体,所述仿锤形扩孔体上设有截齿。
【技术特征摘要】
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