traffic lights什么意思
-种新型涡旋压缩机防自转机构特性研究
郑国林，刘兴旺
sarahconnor
摘要：分析了涡旋压缩机动涡旋盘所受的各种气体力及力矩，得到了一个周期内气体力和力矩随曲柄转角变化的规律。并建立了小曲拐防自转机构受力模型，计算了小曲拐轴承的最短使用寿命。在此基础上提出了三维限位防自转机构，对其进行了受力分析和最短使用寿命计算，并与小曲拐防自转机构最短使用寿命进行对比，结果表明三维限位防自转机构最短使用寿命比小曲拐防自转机构长，是一种良好的新型防自转机构。bullshit>randstad>bdi
purpofulmelee什么意思关键词：涡旋压缩机；小曲拐；轴承使用寿命；三维限位防自转机构
Approach to the characteristics of the anti-rotation mechanism of a novel
翻译工具下载scroll compressor
Zheng Guolin,Liu Xingwang
Abstract：The gas forces and torques suffered by the orbiting scroll of the scroll compressor are analyzed and the variation rule of the rotation angle with the gas force and torque in a cycle is obtained,
the stressing model of the small crank of the anti-rotation mechanism is established,and the shortest rvice life of the small crank bearing is calculated.On this basis,a three-dimensional limit anti-rotation mechanism is propod,the suffered stress are analyzed,and the shortest rvice life is calculated and compared with the shortest rvice life of the small crank anti・iDtation mechanism.The results show that the shortest rvice life of the three-dimensional limit antirotation mechanism is longer than that of the small crank anti-rotation mechanism and it is a good novel anti-rotation mechanism.
Keywords:Scroll compressor;Small crank;Bearing rvice life;Three-dimensional limit anti-rotation mechanism
引言
hanson
涡旋压缩机具有体积小、重量轻、吸/排气连续平稳、振动小、噪声低、耗能小等优点，被广泛应用于低温制冷、动力工程、交通运输等领域〔7。带轴承的小曲拐防自转机构由于其摩擦损耗小，近年来被广泛用于高转速涡旋压缩机中。
国内外学者对小曲拐防自转机构进行了大量研究，赵嫂等同研究了小曲拐防自转机构的工作原理、小曲拐数目的合理选取及分布，指出小曲拐防自转机构是按平行四边形原理运动，采用3个小曲拐均匀
分布的防自转机构.具有良好的工作性能；刘振全等罚将小曲拐防自转机构简化为平行四连杆机构，通过对其动力分析证实它比半周受力的防自转机构受力减少了一半，是一种精度高、性能好的防自转机构；李超等®7］研究了小曲拐的受力及运动平衡方程，分析了小曲拐防自转机构的动力特性和小曲拐的变形，指出周向均匀分布的小曲拐越多，动涡旋盘与小曲拐的受力情况将越好，小曲拐的最大变形发生在上、t p什么意思
•75.
