【摘要】 天轮装置是矿井提升系统中用来改变钢丝绳转向、支撑和传递动力的关键部件，其性能直接影响提升系统的运行安全与工作效率。针对矿井提升系统向大井深、高速化、重载化方向发展所带来的强冲击与高应力问题，以纱岭金矿1 547.5 m深矿井提升系统为研究对象，优化提升系统天轮结构以降低其应力集中，保障提升系统安全稳定运行。首先，基于启动冲击最小的理论原则，采用梯形加速度控制曲线计算天轮关键运动学参数；然后，采用ABAQUS软件对天轮进行瞬态动力学分析；最后，对天轮结构进行优化设计以缓解其应力集中现象。结果表明，梯形加速度控制曲线能有效控制提升系统启动、制动阶段的冲击载荷；天轮在轮辐与轮缘、轮毂的连接处存在明显的应力集中现象，最大应力达3.576 MPa;在天轮结构的轮辐与轮缘、轮毂连接处引入过渡圆角可显著改善应力分布，当过渡圆角半径为40 mm时，天轮所受应力值较原结构天轮所受应力降低了22.13%,即合适的过渡圆角设计能有效优化天轮结构的应力分布，提升矿井提升系统的运行稳定性和可靠性。更多还原

【Abstract】 The hoisting sheave device is a key component used in the mine hoisting system to change the direction, support, and transmit power of the steel wire rope. Its performance directly affects the operational safety and work efficiency of the hoisting system. In response to the strong impact and high stress issues brought about by the development of mine hoisting systems towards deeper, faster, and heavier loads, taken the 1 547.5 m deep mine hoisting system of Shaling Gold Mine as research object, the optimization of the hoisting sheave structure of hoisting system was carried out to reduce stress concentration and ensure the safe and stable operation of the hoisting system. Firstly, based on the theoretical principle of minimizing the start-up impact, the key kinematic parameters of the hoisting sheave were calculated using a trapezoidal acceleration control curve. Then, ABAQUS software was used to perform transient dynamic analysis on the hoisting sheave. Finally, the design of the hoisting sheave structure was optimized to alleviate its stress concentration phenomenon. The results indicate that the trapezoidal acceleration control curve can effectively control the impact load during the start-up and braking phases of the hoisting system. There is a significant stress concentration phenomenon at the connection between the spokes, rim, and hub of the hoisting sheave, with a maximum stress of 3.576 MPa. Adding transitional round corners at the connection between the spokes, rim, and hub of the hoisting sheave structure can significantly improve stress distribution. When the transitional round corner radius is 40 mm, the stress value on the hoisting sheave is reduced by 22.13% compared to the original structure. Therefore, a suitable transitional round corner design can effectively optimize the stress distribution of the hoisting sheave structure and improve the operational stability and reliability of the mine hoisting system.更多还原