| With its wide application in mine lifting systems, the vertical hoisting system has become a core component ensuring safe and efficient mining operations. The overwinding buffer device in the vertical shaft hoisting system can be undoubtedly an ultimate safeguard for the safety and reliability of the vertical hoisting system. At present, the overwinding buffer devices has being used in the mine vertical shaft hoisting systems, despite their varieties, has more or less some defects and shortcomings, which may present huge threats to efficient mining productions and safety of miners. Therefore, it is necessary to conduct researches into the existing overwinding buffer devices and develop a whole set of overwinding buffer devices that are compliant with modern, digital and automated mining development while satisfying the operating conditions of mine vertical shaft systems and can provide effective guarantees for efficient and safe operations of vertical shaft hoisting systems.This paper analyzed all parameters affecting designs and applications of overwinding buffer devices based on the researches on the movement characteristics and overwinding dynamical behaviors of vertical shaft hoisting systems and through extensive field studies and figured out major functional requirements and related processes for overwinding buffer devices. It also conducted a comparative analysis on their respective advantages and disadvantages and came up with various solutions before purposing a final design scheme. In this paper, the3D software Solidworks was employed to establish a three-dimensional model of the system and a simulation analysis is conducted to optimize the design of the systematic mechanisms. A virtual mode machine of an overwinding buffer device was further constructed in the ADAMS software environment, which was then used for its dynamic simulation analysis to further optimize its system parameters.A co-simulation test model of the mechanical system and hydraulic system of the hydraulic steel-belt overwinding buffer device was established through dynamic simulation software ADAMS and hydraulic system simulation software AMESim. The interface problem between the two sets of software was also studied over the course of conducting co-simulations. The design correctness of the hydraulic steel-belt overwinding buffer system was further verified through mechanic-hydraulic coupled simulative analysis, which enabled the understanding of related buffering dynamical parameters and the analysis of some movement characteristics of the system. This paper can serve as a basis for further researches into vertical shaft hoisting systems and provide an impetus for safe and efficient mining productions. |
