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渐开线圆柱齿轮胶合承载能力计算标准比较研究 被引量:3
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作者 贾晨帆 朱才朝 +3 位作者 刘怀举 魏沛堂 朱加赞 徐永强 《机械传动》 北大核心 2022年第12期86-92,共7页
以新一代航空发动机传动系统等为代表的高端传动装备面临高速、高温、重载等极端服役环境挑战,使得胶合失效成为齿轮主要失效形式之一,严重影响系统寿命和可靠性。针对国内常用的3个齿轮胶合评价标准在齿轮胶合承载能力计算结果之间差... 以新一代航空发动机传动系统等为代表的高端传动装备面临高速、高温、重载等极端服役环境挑战,使得胶合失效成为齿轮主要失效形式之一,严重影响系统寿命和可靠性。针对国内常用的3个齿轮胶合评价标准在齿轮胶合承载能力计算结果之间差异较大,且标准公式适用范围存在差异的问题,详细研究了闪温法和积分温度法,从理论分析、公式对比和案例分析三个方面开展了渐开线圆柱齿轮胶合承载能力标准对比研究;并针对FZG A型齿轮,进行了对比计算分析。结果表明,由于HB/Z 84.4的平均摩擦因数计算结果偏高,与GB/Z 6413.2相比计算结果偏大,HB/Z 84.4结果偏保守。GB/Z 6413.1和GB/Z 6413.2在较大的转矩、油温、转速范围内,齿面温度计算结果相差不大;但是,随着模数的减小,二者的齿面温度计算结果差异变大;模数在4~7 mm内,二者齿面温度计算结果相差不大。 展开更多
关键词 圆柱齿轮 胶合标准 闪温法 积分温度法
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Clinical observation of warm needling moxibustion plus flash cupping for remission-stage peripheral facial paralysis due to wind-cold 被引量:27
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作者 Zhang Sai-nan Chen Guo +3 位作者 Xiang Juan Wang Xu-zhe Ouyang Li-zhi Li Tie-lang 《Journal of Acupuncture and Tuina Science》 CSCD 2017年第1期42-46,共5页
Objective: To observe the clinical efficacy of warm needling moxibustion plus flash cupping for remission-stage peripheral facial paralysis (FP) due to wind-cold. Methods: Fifty eligible patients were randomized i... Objective: To observe the clinical efficacy of warm needling moxibustion plus flash cupping for remission-stage peripheral facial paralysis (FP) due to wind-cold. Methods: Fifty eligible patients were randomized into a warm needling moxibustion group and an acupuncture-cupping group, 25 cases in each group. The warm needling moxibustion group was intervened by acupuncture at Fengchi (GB 20), Yangbai (GB 14) towards Yuyao (EX-HN 4), Xiaguan (ST 7), Dicang (ST 4) towards Jiache (ST 6), Quanliao (SI 18), and Hegu (LI 4), plus warm needling moxibustion at Quanliao (SI 18); the acupuncture-cupping group received flash cupping on the affected side in addition to the intervention given to the warm needling moxibustion group. The two groups were both treated once a day, 10 times as a treatment course, for 3 courses in total. The House-Brackmann (H-B) facial nerve grading system was observed before and after the intervention to evaluate the facial nerve function in the two groups, and the therapeutic efficacies were also compared between the two groups. Results: The two treatment protocols both can promote the recovery of facial nerve function. The total effective rate was 92.0% in the acupuncture-cupping group versus 72.0% in the warm needling moxibustion group, and the between-group difference was statistically significant (P〈O.05). Conclusion: Warm needling moxibustion plus flash cupping can produce a more significant efficacy than dry warm needling moxibustion in treating remission-stage peripheral FP due to wind-cold. 展开更多
关键词 Acupuncture Therapy Warm Needling Therapy Cupping Therapy Quick Cupping Therapy Facial Paralysis
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