Structural Optimization And Performance Research On Emergency Rescue Multi-rope Winding Hoist

China is a coal-rich country,ranking third in the world with 114.5 billion tons of storage.Although solar energy,wind energy,nuclear energy and natural gas have developed,coal will still occupy an significant position of resource consumption in the future.However,due to its deep coal burial and less surface coal seams,mine accidents occur frequently,and the mortality rate of one million tons is far higher than that of the United States,South Africa and Russia.And other major coal producing countries.Therefore,it is particularly significant to develop an efficient and portable rescue equipment.Aiming at the existing forms of mine accidents,this paper designs an emergency rescue multi-rope winding hoisting system,which shortens the rescue time by vertical rescue,improves the survival probability of trapped personnel and guarantees the safety of miners.Based on the original data provided by Shanxi Coal Geology 115 Exploration Institute,the parameters of the rescue system are selected through reasonable calculation,the three-dimensional model of the whole system isestablished by Pro/E software,and the key components of the rescue system are optimized by referring to the standards of various countries and industries.Under the premise of ensuring safety,the size of the system is effectively reduced and the portability is improved.Aiming at the issue of rope disorder in existing winches,a new type of rope arranger is designed,which innovative adds a rotating disc intermittent mechanism.Through the operation of this mechanism,the rope arranger can realize the intermittent rope arranging,so that it can arrange rope only in specific circumstances.This method greatly adapts to the operating principle of folded rope groove,improves the rope arranging efficiency,reduces the wear of wire rope,and through the turntable intermittent.Kinematics simulation of the intermittent mechanism obtains the motion law of the mechanism,eliminates the rigid iMPact and greatly reduces the damage to the whole mechanism.The operation of the system is divided into three different working conditions.The external force load of the main shaft device of the hoist is calculated and analyzed by theoretical calculation and ANSYS Workbench finite element method.The maximum stress and deformation of the main shaft device are obtained.The strength and stiffness of the main shaft device meet the requirements of Engineering application.The model design is demonstrated rationality.Aiming at the unbalanced tension phenomenon of multi-rope winding hoist wire rope,the causes and harms of unbalanced tension are discussed,the tensionlaw under normal and wrong winding States is analyzed,and a new type of tension balancing device is designed,which effectively resolves the unbalanced tension issue.The design of vertical rescue hoist is based on vehicle platform,which puts forward high requirements for reducing size.This paper designs a portable derrick,which greatly improves the mobility of the whole system and saves space.Static and modal analysis of the derrick is carried out,and its rationality is demonstrated.The whole system is integrated on the vehicle,and the equipment layout is reasonably arranged.