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邱日祥 《中国个体防护装备》2002,(5):22-24
1防弹头盔及其发展概况 防弹头盔及面罩是用于阻止弹九或破片穿透,有效保护人体头部、眼、面部,且不影响人体视线和战术活动的防护装备。据统计,在20世纪的典型战役中,75%~80%的致命伤是由地雷、榴弹等的破片造成的,而且这 相似文献
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邱日祥 《中国个体防护装备》2014,(4):27-32
本文介绍了GA 293-2012《警用防弹头盔及面罩》标准的主要修订内容,重点解读了防弹头盔及面罩防弹性能的测试评价方法,并对防弹头盔的发展进行了展望。 相似文献
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《中国安防产品信息》2000,(3):7-7
警用头盔是警察重要的防护装备,它对于提高警察的战争力、减少伤亡、增强警察威严的外表具有非常重要的作用。为了使警用头盔从设计生产、市场准入到使用管理规范化,并便于主管部门的质量技术监督,公安部警用械具警服标准化技术委员会(简称警标委)决定对警用系列头盔进行选型和技术标准制订工作。并组成了警用系列头盔选型评定小组, 相似文献
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人机工程学是研究人、机械及其工作环境之间相互作用的学科,它为警用个体防护器材设计开拓了新设计思路,并提供了独特的设计方法和理论依据。 相似文献
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阳光 《中国个体防护装备》2004,(4):48-48
2004年6月23日至6月26日,第二届中国国际警用装备博览会暨技术交流会在北京举办,来自19个国家和地区的51家国际参展商和190个国内参展商参加了展览。此次博览会以“高品质、高规格、高效率”为宗旨,利用众多媒体宣传本届博览会,同时邀请了警用装备政府各级主管部门的领导、专业技术人员、海内外同行及用户参观指导,将本届中国国际警用装备博览会暨技术交流会办成国内外同行精英相聚北京的盛会。此次参展的产品包括警用武器装备、警用械具、警用交通运输和人工智能产品、警用通信产品和刑事技术产品。除以上产品外,值得一提的是警用防护装备… 相似文献
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防弹头盔研制技术及发展前景 总被引:1,自引:0,他引:1
孙幸福 《中国个体防护装备》2009,(1)
战伤统计表明,装备防弹头盔可有效降低士兵的伤亡率.高性能纤维及其在防弹头盔上的应用技术的发展,使其在轻量化的同时获得了更高的防护性能.本文论述了复合材料防弹头盔盔型设计和成型加工技术的要素,探讨了当前军用头盔功能高度集成化趋势对头盔设计和加工技术的影响. 相似文献
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头盔显示系统能大幅增强佩戴者的态势感知能力,已广泛应用于战斗机、直升机的显示、瞄准和操控。目前,世界各国正借鉴飞行员头盔,针对地面装甲车辆开展先进战车乘员头盔研究。本文梳理了国外先进战车乘员头盔的初步研究成果。 相似文献
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焊接面罩是一种焊工防护装备,也是重要焊接辅助工具。本文主要介绍自焊接面罩出现100多年以来,经历了众多的改进,从手持式焊接面罩到头戴式焊接面罩、从黑玻璃焊接面罩到自动变光焊接面罩、从单一功能焊接面罩到多种功能集结的焊接面罩。同时指出,基于材料和技术的进步,焊接面罩不会停止创新的步伐,焊接面罩将在保护焊工、提高焊接质量和效率方面扮演重要角色。 相似文献
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本文采用GB/T2812-2006《安全帽测试方法》提供的方法对安全帽的阻燃性能进行了测试,测试结果表明,采用该方法,同一顶安全帽得到了两种不同的实验结果:一种实验结果为"合格",另一种实验结果为"不合格"。进而研究发现,标准仅对火焰的长度和颜色作了简单的要求,并未对燃气压力、火焰温度等作出明确的要求,从而导致同一顶安全帽有两种不同的实验结果。建议在以后的标准修订中,对试验用气体的纯度和实验时气体的压力有所要求,从而确保测试结果的唯一性和可重复性。 相似文献
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为了解决高温作业环境下安全帽内部微环境积热严重问题,运用ANSYS软件模拟分析了安全帽内部微环境积热的空间和时间分布情况。基于模拟结果,设计了一款分离式可降温安全帽,其由帽体、喷嘴、风管、风机和开关组成。在高温高湿环境下,模拟人员分别佩戴在帽衬带上装有温度传感器的普通安全帽和分离式可降温安全帽进行剧烈运动模拟高温作业人员高强度劳动,记录其温度变化。结果表明:分离式可降温安全帽有良好的降温效果,同时具有不破坏安全帽的结构和强度,几乎不增加安全帽重量,无噪声、无电磁辐射,拆装简便等优点。 相似文献
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通过对一起塔式起重机臂架断裂事故的分析,从设计、制造、使用及维修管理等不同角度指出了事故的原因并提出了建议及对策。 相似文献
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AbstractObjective: Focusing on children (0–17?years), this study aimed to investigate injury and accident characteristics for bicyclists and to evaluate the use and protective effect of bicycle helmets.Method: This nationwide Swedish study included children who had visited an emergency care center due to injuries from a bicycle crash. In order to investigate the causes of bicycle crashes, data from 2014 to 2016 were analyzed thoroughly (n?=?7967). The causes of the crashes were analyzed and categorized, focusing on 3 subgroups: children 0–6, 7–12, and 13–17?years of age. To assess helmet effectiveness, the induced exposure approach was applied using data from 2006 to 2016 (n?=?24,623). In order to control for crash severity, only bicyclists who had sustained at least one Abbreviated Injury Scale (AIS) 2+ injury (moderate injury or more severe) in body regions other than the head were included.Results: In 82% of the cases the children were injured in a single-bicycle crash, and the proportion decreased with age (0–6: 91%, 7–12: 84%, 13–17: 77%). Of AIS 2+ injuries, 8% were head injuries and 85% were injuries to the extremities (73% upper extremities and 13% lower extremities). Helmet use was relatively high up to the age of 10 (90%), after which it dropped. Helmets were much less frequently used by teenagers (14%), especially girls. Consistently, the share of head injuries increased as the children got older. Bicycle helmets were found to reduce all head injuries by 61% (95% confidence interval [CI], 10: +/? 10%) and AIS 2+ head injuries by 68% (95% CI, 12: +/? 12%). The effectiveness in reducing face injuries was lower (45% CI +/? 10% for all injuries and 54% CI +/? 32% for AIS2+ injuries).Conclusions: This study indicated that bicycle helmets effectively reduce injuries to the head and face. The results thus point to the need for actions aimed at increasing helmet use, especially among teenagers. Protective measures are necessary to further reduce injuries, especially to the upper extremities. 相似文献
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目前国内的航空头盔设计仍依赖于经验设计,设计出来的头盔冗余较大,且需要大量的实验进行验证,研制周期长,效率低。针对这些问题,笔者基于ABAQUS平台,并针对航空头盔的特殊性进行二次开发,得到了一款能够进行防碰撞仿真的系统。应用该系统,仿真了3种不同规格的头盔,3种不同装配误差的泡沫硬衬垫共计6种模型的碰撞结果。仿真结果对头盔的设计有一定的指导价值。 相似文献
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智能安全帽侧压性能试验机采用电脑程序控制、伺服控制等技术,使安全帽侧压性能测试实现自动化操作,完全克服了人为因素对测试数据的影响,且读数直观,无需计算,操作便捷,在国内外同类设备中尚居首类。 相似文献
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孙彦水 《中国个体防护装备》2014,(1):46-50
本文阐述了电弧焊弧光所造成的危害种类及其严重程度,并围绕自动变光焊接面罩的基本结构、工作原理、性能指标、防护效果等,重点介绍了防治电弧焊弧光危害的这种专门利器,明确提出了应该让自动变光焊接面罩尽快成为中国焊工防护用具的标准配置的观点。 相似文献
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INTRODUCTION: Traffic safety literature has traditionally focused on identification of location profiles where "more crashes are likely to occur" over a period of time. The analysis involves estimation of crash frequency and/or rate (i.e., frequency normalized based on some measure of exposure) with geometric design features (e.g., number of lanes) and traffic characteristics (e.g., Average Annual Daily Traffic [AADT]) of the roadway location. In the recent past, a new category of traffic safety studies has emerged, which attempts to identify locations where a "crash is more likely to occur." The distinction between the two groups of studies is that the latter group of locations would change based on the varying traffic patterns over the course of the day or even within the hour. METHOD: Hence, instead of estimation of crash frequency over a period of time, the objective becomes real-time estimation of crash likelihood. The estimation of real-time crash likelihood has a traffic management component as well. It is a proactive extension to the traditional approach of incident detection, which involves analysis of traffic data recorded immediately after the incident. The units of analysis used in these studies are individual crashes rather than counts of crashes. RESULTS: In this paper, crash data analysis based on the two approaches, collective and at individual crash level, is discussed along with the advantages and shortcomings of the two approaches. 相似文献