A multi-layer three-dimensional cutter face drill bit for glacier drilling

Abstract

The invention relates to a drill bit with multilayer stereoscopic tool faces for glacier drilling exploration. The drill bit is characterized in that a drill bit body is connected with upper-layer tool bits, the upper-layer tool bits are positioned in a drill body which is in the shape of a barrel, three-position tool bits and bottom spiral contact surfaces of the drill body are arranged on the lower portion of the barrel, 45-degree included angles are formed between the three-position tool bits and the bottom spiral contact surfaces of the drill body, and the three-position tool bits are equidistantly separated from one another by 120-degree angles at the bottom of the barrel. Lower-layer tool bits are positioned on the inner lower portion of the barrel and are connected with the wall of the barrel, 135-degree included angles are formed by the lower-layer tool bits and the wall of the barrel, and planes where the lower-layer tool bits are located intersect with planes where the upper-layer tool bits are located. The drill bit has the advantages that the drilling operation stability and safety can be improved owing to the bottom spiral contact surfaces of the drill body, the service life of the drill bit can be prolonged owing to the upper-layer tool bits and the lower-layer tool bits, the stone and ice crushing capacity of the drill bit can be enhanced by the upper-layer tool bits and the lower-layer tool bits, and the ice crushing perpendicular upward detachment and the diameters of drilled holes can be guaranteed by the aid of the drill body which is in the shape of the barrel.

Description

technical field [0001] The invention belongs to a drill bit of a gasoline glacier flower rod drill, is an instrument accessory used in the layout of glacier material balance field observation operation points, and belongs to the field of machinery. Background technique [0002] As an indicator of climate change, glaciers / ice sheets store 75% of the global freshwater resources. They are the focus of research on climate change and hydrology and water resources in arid areas, and have important scientific value and social significance. As the most basic physical quantity to describe the characteristics of glaciers and measure the changes of glaciers, the mass balance of glaciers is the key element linking the interaction of atmosphere-cryosphere-hydrosphere. The study of changes in material balance and its relationship with climate and hydrology has also become a hot topic in climate, ocean, cryosphere and other disciplines. One of the key scientific issues prioritized by the ...

AI Technical Summary

Problems solved by technology

However, there are still some problems in the design of these drills, which need to be improved and optimized

For example, its strong gasoline power, vertical drilling on the ice surface with low roughness, its safety needs to be improved; in addition, the gravel in the ice body may also become an unfavorable factor that hinders the drilling of ice holes

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