| With the rapid development of economy and society,China’s demand for mineral resources is increasing.Now,China is becoming more mature for shallow mining technology,while less for deep mining technology.At this stage,it is difficult for China to design and manufacture lifting equipment to meet these requirements,this status quo seriously constrained the implementation of the national deep resource development and utilization strategy.This paper is funded by the National Key Basic Research and Development Program(973 Program),“Deformation Detuning Law of Super Deep Mine Hoisting System and Synchronous Control of Parallel Drives”(Project No.2014CB049403),studied on the problems of multi-rope multi-layer winding hoists for deep mining,for the purpose of forming a suppression of the detuning technique of the lifting system and the theory of safety and reliability,exploring the influence of the rope left angle on the bearing force of the main shaft under different working conditions,and propose a reasonable range of wire rope left angle;based on don’t biting the rope,analysis of the relationship between wire rope fleet angle and the groove of the drum;determine the reasonable structure of the sky wheel,avoid interference between the wire rope and the sky wheel,and improve the service life of the wire rope.The research content of this paper mainly includes the following points:(1)Aiming at the problem of the strength of the main shaft of the hoisting machine,established a mechanical model of the principal force,and derivation of the formula for calculating the principal force of the main shaft.Used numerical analysis and MATLAB tools to analyze and compare the variation of the principal force under various working conditions,finally,the influence of the change of the rope angle of the wire rope on the bearing force of the main shaft is proved.The research results show that within a certain range,the larger the rope left angle,the better the bearing force of the main shaft.It is recommended that the rope left angle be in the range of 60° to 70°.(2)Aiming at the problem of wire rope biting rope,the winding model of steel wire rope on the double-broken line rope groove is established,and the relationship between the diameter of the reel,the diameter of the steel wire rope,the declination and the gap of the rope groove is derived,and the analysis program under different working conditions is prepared.Finally,the reasonable fleet angle and the groove of different drum diameters and different wire rope diameters are determined.The research results show that the rope groove clearance and fleet angle should ensure that the groove of the broken line does not bite the rope;draw the relationship between the minimum rope groove clearance and the diameter of the drum,the diameter of the wire rope,the fleet angle;draw the relationship between the maximum fleet angle and the diameter of the drum,the diameter of the wire rope and the gap of the rope groove.(3)Aiming at the problem of wire rope interference with the sky wheel,the mathematical model of the wire rope entering or leaving the sky wheel is established,and the relationship between the diameter of the sky wheel,the diameter of the wire rope,the fleet angle and the width of the sky wheel is derived.The numerical analysis method is used to determine the reasonable structure of the sky wheel at different fleet angle.The research results show that the difference between the inner wall and the liner height of the wheel is larger,the minimum width of the wheel groove is larger;draw the relationship between the minimum width of the wheel groove and the height difference between the inner side wall of the wheel and the pad;draw the relationship between the minimum width of the groove,the minimum side clearance of the liner and the diameter of the spacer plus the pad,fleet angle and the diameter of the wire rope. |
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