[机械标准]JBT 8809-1998 SWL 蜗轮螺杆升降机 型式、参数与尺寸.pdfVIP

ICS 21.200 J 17 JB/T 8809－1998 SWL 蜗轮螺杆升降机 型式、参数与尺寸 Type and parameters，dimensions for SWL wormwheel screw hoists 1998-09-30 发布 1998-12-01 实施 国 家 机 械 工 业 局 发 布 JB/T 8809－1998 目 次 前言 1 范围····················································································································································································································1 2 型式····················································································································································································································1 3 尺寸····················································································································································································································2 4 性能参数·········································································································································································································5 附录 A （提示的附录） 升降机驱动功率的计算······················································································································11 附录 B （提示的附录） 蜗杆轴伸的许用径向力······················································································································12 附录 C （提示的附录） 螺杆长度与极限负荷的关系············································································································13 附录 D （提示的附录） 螺杆许用侧向力 Fs 和轴向力 Fa 与行程的关系····································································15 附录 E （提示的附录） 工作持续率与环境温度的关系····································