进口爆破孔钻机配套钻塔的研制

Development of the drilling mast for the imported blast hole drill

摘要:

进口DMH90型爆破孔钻机配套钻塔整体性强，起落塔快捷方便，钻塔高度满足不换杆一次成孔，即钻塔有效高度略大于钻孔深度，承受振动冲击力大，施工工作环境恶劣。基于这些特点和难点，爆破塔长期依赖进口，导致成本增高、周期加长，为此进行了进口DMH90型爆破孔钻机配套钻塔的替代进口研究工作。本文介绍了DMH90型爆破孔钻机配套ZT27-45型爆破孔钻塔的研制过程，主要对ZT27-45型爆破孔钻塔的设计要点、结构型式、塔体选材、焊接工艺、防止变形、消除应力、质量检验等方面进行了探索、试验和总结。生产施工实践表明，ZT27-45型钻塔制造质量达到了设计要求，满足爆破孔施工的需要，实现了替代进口，达到了降低成本、缩短工期和提高机械性能的目的。

Abstract:

The drilling mast equipped with the imported DMH90 blasting hole drill is featured of strong integrity， quick and convenient erection， proper drill mast height to allow completion of the hole in one trip without changing rods （e.g.， the effective height of the drilling mast is slightly greater than the borehole depth）， resistance to large vibration impact force， and adaptability to adverse construction environment. Owing to these characteristics and difficulties， the blasthole drilling mast has been relied on imports since long before， leading to higher drilling cost and longer drilling duration； therefore， research on the substitute for the imported drill mast for the imported DMH90 blasting hole drill was carried out. This paper introduces the development of ZT27-45 blasting hole drill mast for DMH90 blasting hole drill， mainly covering the design points， mast material selection， welding technology， deformation prevention， stress relief and quality inspection. Field practice shows that the manufacturing quality of ZT27-45 drill mast meets the design requirements， and satisfies the needs of blasting hole drilling； thus， it realizes the substitution of import， reduces the cost， shortens the construction period and improves the mechanical properties.