轴承
軸承
축승
BEARING
2014年
9期
32-34,35
,共4页
姜英硕%姜祺%周佳新%汪东华
薑英碩%薑祺%週佳新%汪東華
강영석%강기%주가신%왕동화
滚动轴承%寿命%统计模拟%对数正态分布
滾動軸承%壽命%統計模擬%對數正態分佈
곤동축승%수명%통계모의%대수정태분포
rolling bearing%life%statistical simulation%lognormal distribution
用统计模拟方法查明了集材用拖拉机在模拟工况下滚动轴承载荷和转速服从正态分布，确定了集材用拖拉机轴承寿命服从对数正态分布，其分布对数参数均值LhL为9．4125 h；均方差SL 为0．2172 h。求出了轴承可靠度等可靠性指标，可作为预测轴承可靠性指标和备件数量的依据。
用統計模擬方法查明瞭集材用拖拉機在模擬工況下滾動軸承載荷和轉速服從正態分佈，確定瞭集材用拖拉機軸承壽命服從對數正態分佈，其分佈對數參數均值LhL為9．4125 h；均方差SL 為0．2172 h。求齣瞭軸承可靠度等可靠性指標，可作為預測軸承可靠性指標和備件數量的依據。
용통계모의방법사명료집재용타랍궤재모의공황하곤동축승재하화전속복종정태분포，학정료집재용타랍궤축승수명복종대수정태분포，기분포대수삼수균치LhL위9．4125 h；균방차SL 위0．2172 h。구출료축승가고도등가고성지표，가작위예측축승가고성지표화비건수량적의거。
The load and rotational speed in rolling bearings obeys normal distribution for yarding tractor under the simu-lating operating conditions,which are verified by using the statistical simulation method.It is indicated that the bearing life obeys lognormal distribution,having distributed logarithmic parameters:mean value LhL =9.412 5 h,mean square error SL =0.217 2 h.The reliability indexes for bearings are calculated,which can be regarded as basis for forecasting the reliability indexes and spare parts of bearings.
