In combination with the requirements of vertical shaft segment assembly,in this paper,a polar crane which can run along the track±210 degrees is put forward.By studying the position of segment hanging point,a transportation plan without transfer device is proposed,which improves the efficiency of segment transportation.In addition,based on the principle of face gear transmission,a travelling drive plan of meshing arc rack with spur gear is proposed,and the bearing capacity of gear rack is improved by increasing gear modulus and gear tooth modification.Based on the comparison and analysis of the advantages and disadvantages of various power supply plans,the power supply plan with circular drag chain was determined.The engineering practice shows that the design plan of the polar crane is reasonable and feasible,can meet the requirements of hoisting shaft segments and provide ideas and technical references for the future functional design of shaft boring machines.
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