| Underground drilling is an ideal method for deep borehole. It can make use of the existing mine- shaft in geological prospecting. Underground drilling rig is the core equipment of underground drilling, the capability of current domestic drill rig is backward and can’t meet the demand of deep drilling.Through referring to the features of structural patterns of underground drill rig at home and abroad, a full-hydraulic underground core drill rig is designed. The structure and hydraulic system are designed by routine method. The thesis consists four parts as followings:(1)By means of literature and market investigation, the development status and market demand of underground drill rig was summarized, the basic parameters of the rig were determined and the main technical parameters were computed.(2)The overall layout of the rig and loading type was determined. The machine consists of three parts: control panel, skid-mounted pump station and skid-mounted fuselage.(3)The load characteristics of the actuators were analyzed,the double variable pump hydraulic system was designed.(4)The parameters of hydraulic components were calculated and the types were selected. A double rod cylinder of two stages was designed and installed, the stroke of rotary head was increased and achieved good effect in practical application... |
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