Full
Outline
Safety protection for hoist cars in ordinary inclined shafts primarily relies on passive safety devices installed within the shaft. To prevent catastrophic consequences resulting from an accelerated impact, a structure for an inclined shaft hoisting container was proposed, featuring mechanical braking, maintenance interlocks, and spring-loaded shock absorbers. By establishing a multi-body coupled impact dynamics model of the hoisting container-slope track system, the formation mechanism and key influencing factors of the rear wheel lift angle during braking impacts were revealed. Combining theoretical derivations, virtual prototyping simulations, and experimental validation, the effects of buffer spring stiffness, slope track angle, impact velocity, and various operational loads on the dynamic behavior of the hoisting container were systematically analyzed. The results show that the system impact force and rear wheel lift angle reach the minimum values when the spring stiffness is approximately 2 500 N/mm and 15 000 N/mm, respectively, representing reductions of 13.4% and 17.4% compared to the springless condition. The slope track angle is positively correlated with impact velocity and the rear wheel lift angle. The rear wheel lift angle under rated load conditions is 15% to 30% lower than that under no-load conditions. When the slope track angle increases from 10° to 30°, the derailment impact speed under rated load conditions decreases from 9.5 m/s to 7.3 m/s, and under no-load conditions, it decreases from 9.0 m/s to 5.2 m/s, resulting in a maximum safety margin of 28.8% for load-carrying capacity. The research findings provide a theoretical basis for improving container impact-resistant design and safe braking strategies.
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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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