Design of Portable Full Hydraulic Tunnel Core Drilling Rig

In order to solve the problem of rig relocation in the roadway with poor transportation conditions, light alloy materials are used instead of traditional carbon steel, modular pump station design, stepless expansion of lifting frame, and quick assembly of components. Developed the ZDY1200G lightweight full hydraulic tunnel rig. The box-type feeding device designed with aluminum alloy material, two-stage telescopic cylinder and wear-resistant rail has the characteristics of long stroke and light weight, and the shape variable of the fuselage is analyzed by three-dimensional digital speckle dynamic strain measurement;The combined pumping station consisting of two pumping stations can be used separately or in parallel, which is convenient for relocation and transportation. The combined tunnel is designed, and the oil unloading of the motor solves the lubrication problem when the power head is drilled at different angles. The hydraulic control loop based on constant pressure variable pump is designed, which has a fast response speed, which solves the influence of the oil discharge of the oil distribution sleeve on the rotary speed of the drilling rig and improves the drilling efficiency. The drilling rig can be used for the construction of resource exploration holes in metal mine ground and roadway, and also for the construction of coal mine gas drainage holes, exploration and release water holes and geological structure exploration holes.