Effect of misalignment failures of steel guides on impact responses in friction mine hoisting systems

Yao, Jiannan; Ma, Yansong; Ma, Chenguang; Xiao, Xingming; Xu, Tong

doi:10.1016/j.engfailanal.2020.104841

Cited by 15 publications

(12 citation statements)

References 8 publications

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“…the fault-detection method exhibited very high sensitivities of 100%, 90.40%, and 84.53% for embossment-, bump-, and gap-type faults, respectively. Yao et al [10] combined dynamic model studies and numerical simulations to determine the effect of guide rail failure on guiding forces. The modelling results were validated experimentally using a physical model.…”

Section: Failures Of the Guide Railsmentioning

confidence: 99%

“…They also proposed a solution for reducing the dynamic effects of a hoisting rope using a tension equilibrator and magnetorheological dampers. Yao et al [10] studied the important problem of the effect of guide rail failures on the forces in the hoisting rope. The problem of dynamic wire rope interactions is the subject of extensive research, e.g.…”

Section: Failures Of the Guide Railsmentioning

confidence: 99%

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Structural Safety Assessment of Shaft Steelwork – A Review

2023

Archives of Mining Sciences

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Structural Safety aSSeSSment of Shaft Steelwork -a reviewshaft steelwork is a component of critical infrastructure in underground mines. it connects the mining areas to the surface and enables the transport of personnel, equipment, and raw materials. its failure or malfunction poses a threat to people and causes economic losses. Shaft steelwork is an exceptional engineering structure exposed to dynamic loads from large masses moving at high speeds and is subject to intensive deterioration resulting from corrosion and geological or mining-induced deformations. These issues cause shaft steelwork to be subject to high structural safety requirements, design oversizing, demanding maintenance procedures, and costly replacement of corroded members. The importance and unique working conditions of shaft steelwork create practical design and maintenance problems that are of interest to engineers and scientists. This paper reviews publications on the structural safety of rigid shaft steelwork and summarises the range of research from the detection of guide rail failures through the assessment of load effects and guide resistance, to the evaluation of structural reliability. The effects of guide rail failures on guiding forces, models of the conveyance-steelwork interaction, the load-carrying capacity of shaft steelwork under advanced corrosion, and the probabilistic assessment of structural reliability are presented. Significant advances in understanding the mechanical behaviour of shaft steelwork and assessing its properties have been reported. This review summarises the current state of research on shaft steelwork structural safety and highlights key future development directions.

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Section: Failures Of the Guide Railsmentioning

confidence: 99%

Section: Failures Of the Guide Railsmentioning

confidence: 99%

Structural Safety Assessment of Shaft Steelwork – A Review

2023

Archives of Mining Sciences

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“…Although the safety level of mine hoists has been continuously improved with the progress of research, safety risks still exist due to the harsh working environment of the equipment [1]. Multiple factors, such as brake faults [2], guide rail faults [3] and inconsistent winding [4], can seriously affect the service life of key components and the safe operation of hoists.…”

Section: Introductionmentioning

confidence: 99%

Longitudinal vibration estimation of a mine hoist using a hybrid signal fusion method combining UKF, ND and improved DE

Chen,

Zhang,

Chang

et al. 2024

Meas. Sci. Technol.

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The monitoring of cage longitudinal vibration can directly indicate the operational status of mine hoists. However, it is always challenging to collect the sensor signals of moving cages with high dynamic characteristics in real time from complex working environments using traditional monitoring methods. In this study, a more practical hybrid signal fusion approach is proposed to realize estimation of cage longitudinal vibration from a low sampling rate acceleration acquisition signal and a low cost encoder signal for state estimation. A nonlinear differentiator is applied to extract encoder differential signals and expand observation variables. An unscented Kalman observer based on nonlinear mine hoist model is designed to estimate the unknown state. To overcome the influence of the uncertain parameters, an improved differential evolution (DE) algorithm combining parameter adaptive method, reverse learning competition scheme and multiple parallel populations strategy is proposed to find unknown parameters of the observation model and autotune the parameters of the algorithms by using low sampling rate acceleration. Sensor data of the simulated experiment platform were collected and processed by the xPC system to validate the effectiveness of the proposed strategy. The experimental results showed that the improved DE (IDE) algorithm had a faster mean time for parameter tuning and the smallest fitness value compared to the standard DE, the particle swarm optimization algorithm and the genetic algorithm. Moreover, the longitudinal vibration estimation system, after parameter tuning by the IDE optimization algorithm, could achieve the purpose of signal estimation, with a smaller estimation error and a better estimation effect.

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“…In the case of mine hoists, research of fatigue evaluation has concentrated on the fretting fatigue of the hoisting rope [ 23 ], steel wire fatigue due to bending over the sheaves [ 24 ], and the tribo-fatigue because of the rope and friction pulley contact [ 25 , 26 ]. Additionally, the cage steel guide fatigue [ 27 ], the fatigue endurance of the load bearing elements [ 28 ], the fatigue damage accumulation of the winding drum [ 29 , 30 ], and the headframe structure improvement to sustain fatigue [ 31 , 32 ] were studied but, as far as we are aware, no previous research regarding the fatigue life evaluation of the components of mine hoist brakes was published.…”

Section: Introductionmentioning

confidence: 99%

A Thermo-Mechanical Stress Based Fatigue Life Evaluation of a Mine Hoist Drum Brake System Using COMSOL Multiphysics

et al. 2022

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In this study, the fatigue usage factors for Findley and Matake stress-based criteria were determined in the case of an MK5×2 mine hoist drum brake system subjected to cyclic maneuver braking. The study was conducted for this type of brake system, because the majority of mine hoists in Romanian mines are equipped with this brake type, being in operation for several decades. A geometric model of the brake was built using SolidWorks and imported in COMSOL Multiphysics to perform thermo-mechanical simulations. Based on the deformations and von Mises stresses determined by the thermomechanical simulation and, considering the calculated endurance limits of the brake system materials, Matake and Findley fatigue life evaluation simulations from COMSOL’s fatigue module were conducted. The results show that the highest fatigue is expected on the drum lining surface towards the exit point from under the brake shoe in both cases, and the values of the usage factor of 0.307 (Findley) and 0.401 (Matake) are both under the critical value 1, meaning that the stress limit has not been exceeded for the brake system components and, thus, failure is not expected. Simulations were conducted considering an estimated 1.06 × 105 cycles during one year, more than both the usual service/replacement interval of the friction components of the brake, and the period of mandatory technical inspections imposed by regulations.

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Effect of misalignment failures of steel guides on impact responses in friction mine hoisting systems

Cited by 15 publications

References 8 publications

Structural Safety Assessment of Shaft Steelwork – A Review

Structural Safety Assessment of Shaft Steelwork – A Review

Longitudinal vibration estimation of a mine hoist using a hybrid signal fusion method combining UKF, ND and improved DE

A Thermo-Mechanical Stress Based Fatigue Life Evaluation of a Mine Hoist Drum Brake System Using COMSOL Multiphysics

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