实验流体力学
實驗流體力學
실험류체역학
JOURNAL OF EXPERIMENTS IN FLUID MECHANICS
2014年
5期
71-75
,共5页
谢斌%史玉杰%易国庆%王超
謝斌%史玉傑%易國慶%王超
사빈%사옥걸%역국경%왕초
风洞应变天平%校准系统%自动校准%四自由度
風洞應變天平%校準繫統%自動校準%四自由度
풍동응변천평%교준계통%자동교준%사자유도
wind tunnel strain gauge balance%calibration system%automatic calibration%four degree of freedom
研制了70kN量级的应变天平校准系统,以满足2m量级高速风洞测力试验天平的静态校准需求。70kN载荷应变天平校准系统基于传统的单元校准方法,采用四自由度复位式体轴系自动校准方案,加载力源为标准砝码,采用砝码独立控制技术的自动加载装置实现天平校准载荷的自动加载。砝码产生的重力通过双十字铰链施力定位装置和刚性加载头准确地传递到天平上,无间隙复位传动机构可以保证天平的精确复位。建成后的校准系统可满足20~70kN量程范围的杆式天平和环式天平等不同类型天平的校准需求。
研製瞭70kN量級的應變天平校準繫統,以滿足2m量級高速風洞測力試驗天平的靜態校準需求。70kN載荷應變天平校準繫統基于傳統的單元校準方法,採用四自由度複位式體軸繫自動校準方案,加載力源為標準砝碼,採用砝碼獨立控製技術的自動加載裝置實現天平校準載荷的自動加載。砝碼產生的重力通過雙十字鉸鏈施力定位裝置和剛性加載頭準確地傳遞到天平上,無間隙複位傳動機構可以保證天平的精確複位。建成後的校準繫統可滿足20~70kN量程範圍的桿式天平和環式天平等不同類型天平的校準需求。
연제료70kN량급적응변천평교준계통,이만족2m량급고속풍동측력시험천평적정태교준수구。70kN재하응변천평교준계통기우전통적단원교준방법,채용사자유도복위식체축계자동교준방안,가재력원위표준겁마,채용겁마독립공제기술적자동가재장치실현천평교준재하적자동가재。겁마산생적중력통과쌍십자교련시력정위장치화강성가재두준학지전체도천평상,무간극복위전동궤구가이보증천평적정학복위。건성후적교준계통가만족20~70kN량정범위적간식천평화배식천평등불동류형천평적교준수구。
To meet the static calibration requirement of the balances used in force tests of 2 meter scale high speed wind tunnel,a 70kN strain gauge balance calibration system is developed. Based on the traditional OFAT method,the scheme for four degree of freedom,balance body ax-is system replacement and automatic calibration is adopted.Standard weights are applied to pro-vide accurate calibration loads by using automatic loading weights device,which controls weights independently.Through the double cross hinge force acting point positioning device and the but-terfly shape load-adapter,balance can be loaded exactly.Gapless replacement transmission mech-anism ensures precise replacement of the balance.The final calibration system can meet the cali-bration requirements of different types of balances such as sting and ring ranging from 20kN to 70kN loading.