介绍了一种新型桅杆伸缩式长螺旋钻机,该钻机桅杆的伸缩是用一种双卷筒单动卷扬机联动完成的,实现桅杆在平放状态下伸缩后整体液压起落。并针对首台FB225B(钻深25m)长螺旋钻机中存在的不足,进行了新的总体设计。其设计思想对国内长螺旋钻机的发展有一定的促进作用,也是长螺旋钻机设计技术的提升和发展。 A new type of mast telescopic long auger is introduced. The mast telescoping is accomplished through the linkage of a two-drum single-action windlass, which can make the whole mast rise and lower after the mast is raised and lowered. And for the first FB225B (drilling depth 25m) long auger in the existing deficiencies, a new overall design. The design idea of ​​the domestic long auger rig to promote the development of a certain extent, but also long auger rig design technology upgrading and development.