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1 概述 东风4Ｂ型机车牵引齿轮箱为主、从动牵引齿轮提供了一个密闭的工作环境 ,并储存一定量的润滑油脂润滑牵引齿轮。该齿轮箱用 3ｍｍ薄钢板组焊而成 ,上、下箱体以轮对轴线为分箱面 ,在两端通过4条Ｍ2 0螺栓 (又称合口螺栓 )连接成一体 ;中部两侧面各有 1条拉紧螺栓 (
1 Overview Dongfeng 4B locomotive traction gearbox-based, driven traction gear provides a closed working environment, and store a certain amount of grease lubrication traction gear. The gear box with 3mm sheet steel welded together, the upper and lower box to the wheel axis is sub-box at both ends by four M2 0 bolts (also known as the mouth bolt) connected into one; both sides of the central have 1 tightening bolt (