石油和天然气工业 特殊用途高速传动装置

[中文适用范围]： 本国际标准规定了封闭式精密单螺旋、双螺旋、一级和两级平行轴增速器和减速器的最低要求，小齿轮速度为 3000 min 或更高，节线速度为 25 m/s 或更大，用于特殊用途的应用。 此类应用通常需要在没有安装备用设备的情况下长时间连续运行，并且对于装置的持续运行至关重要。 经同意，本国际标准可用于其他服务。 本国际标准还规定了满足以下标准的齿轮评级方法： a) 齿轮精度——齿精度：精度等级 4 级或更高，如 ISO 1328-1:1995 中给出的，单节距偏差、fpt' 和总累积偏差螺距偏差，Fp'——小齿轮和轮的螺旋线之间的总螺旋线偏差Fβ：ISO 1328-1:1995中给出的精度等级4或更好； b) 横向重合度范围：1.2 < εα < 2.0； c) 重叠率εβ≥1.0； d) 螺旋角：5≤β≤35°； e) 小齿轮或齿轮的工作侧面：进行轮廓修整，以获得沿接触路径的良好共轭齿载荷分布； f) 小齿轮或齿轮的工作侧面：根据需要进行修改，以补偿扭转和弯曲变形，并且当必要时，对于节线速度超过 100 m/s 的齿轮，还可以补偿热变形； g)齿轮润滑：纯矿物油，粘度等级VG-32或VG-46（见ISO 3448）； h) 轮齿材料：质量 MQ 或更好，符合 ISO 6336-5:1996。 [外文原描述]： This International Standard specifies the minimum requirements for enclosed, precision, single and double helical, one- and two-stage speed increasers and reducers of parallel shaft design with pinion speeds of 3000 min−1 or greater, or pitch line velocities of 25 m/s or greater, for special purpose applications. Such applications will typically be required to operate continuously for extended periods, without installed spare equipment and are critical to the continued operation of the installation. By agreement this International Standard may be used for other services. This International Standard also specifies a method of rating gears which meet the following criteria: a) gear accuracy  teeth accuracy: accuracy grade 4 or better as given in ISO 1328-1:1995, for both single pitch deviation, f pt, and total cumulative pitch deviation, F p,  total helix deviation F β between the helices of the pinion and wheel: accuracy grade 4 or better as given in ISO 1328-1:1995; b) range of the transverse contact ratios: 1,2 < εα < 2,0; c) overlap ratio εβ W 1,0; d) helix angle: 5 u β u 35°; e) working flanks of the pinion or gear: provided with profile modifications to obtain a good conjugate tooth load distribution along the path of contact; f) working flanks of pinion or gear: modified as necessary to compensate for both torsional and bending deflections and, when necessary for gears with pitch line velocities in excess of 100 m/s, also for thermal distortions; g) gear lubrication: straight mineral oil, viscosity grade VG-32 or VG-46 (see ISO 3448); h) material of the gear teeth: quality MQ or better, in accordance with ISO 6336-5:1996.