Abstract: With the development of coal mining technology, the contradiction between drilling and excavation has become increasingly prominent. The existing split-type hydraulic drills, though able to meet the requirement of drilling engineering, have the disadvantages of poor mobility, long auxiliary time and strong labor strength, and therefore, can not well satisfy the high efficiency high production requirements. It is very necessary to develop track-mounted self-propelled drills with improved mobility and reduced labor strength requirement. The paper describes in detail the development of ZDY6000L track-mounted tunnel drilling rig, including its integral layout design, design idea of its chassis and main parts, and design of its hydraulic system. The industrial test and application of the drilling rig are also presented. The testing results indicate that all of its technical performances have reached the designed indexes.

Key words: Load-sensitivity, Track, Drilling rig, Hydraulic system