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时间:2019-05-14
《考虑制退液空化的火炮制退机复进液压阻力计算》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、2013年6月机床与液压June2013第41卷第11期MACHINET0OL&HYDRAULICSVo1.4lNo.11DOI:10.3969/j.issn.1001—3881.2013.11.025考虑制退液空化的火炮制退机复进液压阻力计算杨玉栋,张培林,傅建平,张晓东(1.军械工程学院一系,河北石家庄050003;2.63926部队,北京102202)摘要:传统反后坐理论假设火炮后坐结束时制退机非工作腔内有真空段,基于该假设的火炮复进计算结果与实测结果有一定差异。以制退机非工作腔空化试验和压力试验为手段,研究了火炮后坐时制退液的空化现象及考虑制退液空化时
2、制退机复进液压阻力的计算方法。研究结果表明:制退液在火炮后坐时发生了剧烈空化,后坐结束时制退机非工作腔内充满制退液空化泡,并不存在真空段。制退液空化泡是在复进过程中逐渐溃灭的,制退机非工作腔几乎不提供复进液压阻力。采用传统理论计算方法会导致对制退机复进液压阻力的高估。考虑制退液空化效应时,计算出的制退机复进液压阻力功比传统理论值小4.5%,火炮最大复进速度比传统理论值大10.5%。该结论为制退机的合理设计与故障诊断提供了参考。关键词:制退机;制退液;空化;空化试验;压力试验;液压阻力中图分类号:TJ303文献标识码:A文章编号:1001—3881(2013)1
3、1—093—4CounterRecoilingCalculationofHydraulicResistanceofGunRecoilBrakeTakingRecoilOilCavitatiOnintoAccountYANGYudong,ZHANGPeilin,FUJianping,ZHANGXiaodong(1.Department1,OrdnanceEngineeringCollege,ShijiazhuangHebei050003,China;2.63926Troops,Beijing102202,China)Abstract:Thetraditional
4、recoiltheorygenerallysupposedthatthevacuumwasexistedinthenon—workingchamberofrecoilbrakeattheendofrecoiling,andtheguncounter—recoilcalculationresultbasedonthehypothesiswerediscrepantwiththetestresults.Therecoil0ilcavitationeffectatrecoilingofgunwasresearched.andthecountercalculating
5、methodofhydraulicresistanttakingrecoiloilcavitationintoaccountwasconsideredbyusingmeasuresofcavitationtestandpressuretestinnon—workingchamberofrecoilbrake.Theresearchresultsshowthattherecoiloilcavitiesareproduceddrasticallyinrecoilingcoupeofthegun,andthenon-workingcham—berofrecoilbr
6、akeisfullofrecoiloilfoamattheendofrecoiling.insteadofnovacuumisexisted.Thenon—workingchamberofrecoilbrakedoesnotoffercounterhydraulicresistance.fortherecoiloilbubblescollapsegraduallyduringcounter—recoiling.Thetraditionaltheorycalculatingmethodcancauseoverrateofthecounter·recoilhydr
7、aulicresistanceofrecoilbrake.Whentakingefectofrecoiloilcavitationintoaccount.thecalculatedcounter—recoilinghydraulicresistanceworkofrecoilbrakeis4.5%lessthantraditionaltheoreti—calvalue.andthem~imumcounter·recoilingvelocityofthegunis10.5%greaterthantraditionaltheoreticalvalue.Thecon
8、clusionsprovidearef
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