排序方式: 共有19条查询结果,搜索用时 390 毫秒
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介绍了起重机用各种缓冲器的性能和缓冲原理,比较了它们各自的特点,指出了在选择使用时应考虑的几个方面的问题。 相似文献
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McCann M 《Journal of Safety Research》2003,34(5):507-514
Problem: This study examined deaths of construction workers due to personnel lifts (boom-supported and scissor lifts, suspended scaffolds, and crane platforms). Methods: Deaths of construction workers for 1992–1999 were examined using data from the Census of Fatal Occupational Injuries, a Bureau of Labor Statistics database. Results: The study identified 339 deaths: 42% from boom-supported lifts; 26% from suspended scaffolds; 19% from scissor lifts; 5% from crane platforms; and 7% from unapproved lifts (e.g., forklift platforms). The main causes of death were falls (36%), collapses/tipovers (29%), and electrocutions (21%). Discussion: Recommendations include: following OSHA regulations, wearing personal fall protection equipment, adequate maintenance, inspection before use, and training on the model of lift used. Precautions are also needed to prevent contact with overhead power lines. Impact on industry: The increasing popularity of boom-supported lifts and scissor lifts, both in construction and other industries, make their safety an important issue. 相似文献
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核电站搬运核废料起重机的故障树分析 总被引:1,自引:2,他引:1
华小洋 《中国安全科学学报》2002,12(2):2-9
目的 :对某核电站用于搬运核废料的桥式起重机进行了故障树分析 ;方法 :以吊物坠落为顶事件而建立了故障树 ,通过故障树特征参数的计算对该事件进行了定性分析和定量分析。根据分析结果 ,确定了该起重机的关键元 (部 )件和薄弱环节 ,提出了降低吊物坠落概率的简便有效措施。 相似文献
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徐伟锋 《中国特种设备安全》2014,(3):28-30
本文分析桥门式起重机大车运行机构啃轨的原因,提出运用纠偏检测控制技术。结合先进的PLG控制和变频调试技术、PID控制器以及现场总线通讯技术等,取代传统的电气控制方式,减少桥门式起重机中大车的啃轨现象,提高设备的安全使用性能,减少设备的故障率,降低维护成本和维修工作量,同时操作简单、运行可靠,具有节能等效果。 相似文献
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Migratory stopover habitats are often not part of planning for conservation or new development projects. We identified potential stopover habitats within an avian migratory flyway and demonstrated how this information can guide the site‐selection process for new development. We used the random forests modeling approach to map the distribution of predicted stopover habitat for the Whooping Crane (Grus americana), an endangered species whose migratory flyway overlaps with an area where wind energy development is expected to become increasingly important. We then used this information to identify areas for potential wind power development in a U.S. state within the flyway (Nebraska) that minimize conflicts between Whooping Crane stopover habitat and the development of clean, renewable energy sources. Up to 54% of our study area was predicted to be unsuitable as Whooping Crane stopover habitat and could be considered relatively low risk for conflicts between Whooping Cranes and wind energy development. We suggest that this type of analysis be incorporated into the habitat conservation planning process in areas where incidental take permits are being considered for Whooping Cranes or other species of concern. Field surveys should always be conducted prior to construction to verify model predictions and understand baseline conditions. Predicción y Mapeo del Hábitat Potencial de Descanso de la Grulla Americana para Guiar la Selección de Sitios para Proyectos de Energía Eólica. 相似文献
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罗浩亮 《中国特种设备安全》2022,(1):28-31
本文从法规的要求和核电厂设备运行管理需求两方面介绍核电厂起重机增加安全监控管理系统的必要性,并以核电厂主行车安全监控管理系统为例,介绍了核电厂起重机安全监控管理系统的基本原理和系统构造,阐述了核电厂安全监控管理系统在国标要求基础上进行的设计提升和应用情况,为行业起重机尤其后续新建核电厂起重机安全监控管理系统的设计、验收... 相似文献