Full
Outline
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.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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