Research On Tension Equalizer Based On Gear Train Adjustment And Dynamic Characteristics Of Parallel Wire Ropes

As an important part of the deep mine hoisting system,the wire ropes bear the weight of almost all moving parts of the hoisting system and the load of the cage.With the continuous increase of the depth and load of the hoisting system,in order to ensure a sufficient safety factor,The number of wire ropes used in the hoisting system keeps increasing.Due to factors such as the diameter deviation of the rope groove,the stiffness deviation of each steel wire rope,the length deviation of each steel wire rope,the creeping of the steel wire rope and other factors among multi-rope,the tension of the hoisting steel wire ropes is unequalized.How to make each steel wire rope achieve uniform tension,is an important issue to increase the service lives of the wire ropes,improve production efficiency,and ensure safe operation.However,the existing wire ropes tension equalizer has limitations such as small rope adjustment distance and oil pressure leakage affecting work reliability.Aiming at the tension unequalized of the multi-rope hoisting system and the existing tension equalizers have limitations such as short adjustment distances,this thesis uses the planetary gear train topology theory to design a multi-wire rope tension equalizer,and adopts theoretical modeling,simulation analysis and experiments.The combined method of verification demonstrates the effectiveness of the designed device for equalizing tension among multiple steel wire ropes.First,by analyzing the differential performance of the existing tension equalizers,the multi-degree-of-freedom gear train is introduced to carry out the mechanism design of the tension equalizer,and then the topology analysis and configuration synthesis of the gear train are carried out.According to the synthesis results,the structure types is selected according to the corresponding principles;The selected configurations is inversed,and the mechanism design of the two tension equalizers and the analysis of the principle of tension equalized are carried out.At the same time,a gear train-hydraulic is designed for the working condition with a small adjustment distences.In the end,the structure design of the tension equalizers is carried out for the designed mechanism scheme.At the same time,in order to improve the versatility of the spatial structure arrangement,a parallel distributed tension equalizer is designed.Through the mechanism design of the tension equalizer,the foundation has been laid for the research on the dynamic characteristics of the wire ropes tension equalized.Secondly,according to the designed drum-integrate tension equalizer,the hoisting system based on gear train adjustment is divided into the gear train and the wire ropes subsystem,and the hoisting cage subsystem is theoretically modeled,and the Lagrangian equation and the Newton equation are combined.The dynamic equation of the hoisting system was established,and the dynamic equation was solved numerically using the Runge-Kutta method.The response of the system under a variety of different working conditions was analyzed,and the influence of different parameters of the system on the tension equalized was studied.At the same time,the effectiveness of the system for equalizing the tension of the wire ropes is also verified.Third,the Siemens Simcenter AMESim software is used to establish a simulation model of the hoisting system based on the adjustment of the gear train.The model includes the series and parallel connection modes of the gear train;for the stopping and running of the hoisting system,the winding difference of the drum,emergency braking,etc,the simulation analysis is carried out,and the simulation result is compared with the numerical calculation results of the theoretical model,which verifies the correctness of the theoretical model.Finally,according to the previous design and analysis,the overall design of the experimental platform of the hoisting system based on the adjustment of the gear train is carried out considering the series and parallel connections of the drum-integrate tension equalizer,and the various parts of the system are processed and manufactured,and built the hoisting system experimental platform with the tension equalizer was carried out.The series tension equalization experiment and the parallel tension equalized experiment were carried out.The experimental results verify the correctness of the theoretical model and the feasibility of the actual application of the device.There are 92 pictures,3 tables,and 76 references in this thesis.