XY-42L, XY-5L type tower crane core drilling machine is developed on the basis of the advantages of the main drive of the vertical drill, which is based on the advantages of integrated function integration of all hydraulic drilling rig. At the technical level, the structure is novel and has the comprehensive advantages of all hydraulic and vertical drilling rig. It has the advantages of reliable operation and high transmission efficiency, and has the advantages of comprehensive function and centralized control. It fills a market gap between the current traditional vertical drilling rig and the full hydraulic power head rig, and is at the performance price level. Low one-time investment is equal to about 1/3-1/2 of all hydraulic drilling rig, low maintenance cost, strong ability, easy to purchase accessories, more in line with the actual situation of domestic market, which has played an exemplary role in reducing labor intensity and improving labor environment by equipment; in the area of adaptation to the region, the model has a wide territory in our country. Extensive application market, such as vast terrain conditions in northern China and various mining areas. In recent years, XY-42L, XY-5L type tower crane core drilling machine has been widely used in Inner Mongolia, Xinjiang, Shandong, Tibet, Qinghai, Hebei, Shaanxi and other areas, and has been exported.