HC-15型大直径环状取心潜孔锤钻具结构的改进设计

Structural Improvement Design of HC - 15 Large-diameter DTH of Annular Coring Drilling System

摘要:

针对HC-15型大直径环状取心潜孔锤配风盒存在结构复杂、难以加工、密封性能差、局部维修困难的问题，设计采用配气罐来代替配风盒，结构简单，易于加工，不但密封性能好，强度可靠，而且易于拆卸，局部维修方便，大大降低了生产成本。

Abstract:

The drilling technology of HC-15 large-diameter down the hole hammer(DTH) of annular coring drilling system is effective to improve the drilling efficiency and to solve the drilling problem of large-diameter pile hole in hard rock.This drilling system adopts distribution pot instead of air distribution case,so the structure of this new type is simple to made,easy to disassemble with good sealing performance.