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500mm 轧钢机是我厂主要的轧钢设备,此设备拆迁安装以来,投产已有六年多。77年5月,三联齿轮箱的下人字齿轴在梅花键处突然断裂,轧机被迫停产。在备品备件缺乏的情况下,我厂机动部立即组织检修,经过研究,大胆采用了齿轴热套联接工艺,不到48小时就完成了抢修任务。经过将近两年多的实践观察,人字齿轴联接部位没有发现裂纹或配合失效现象,在周期性交变大负载力的作用下,齿轴强度毫无影响,传动平稳可靠。这表明检修质量是良好的。这种检修工艺在重型机械的修理中,具有很多优点,我们介绍如下。
500mm rolling mill is our main rolling mill equipment, demolition and installation of this equipment has been put into operation for more than six years. May 77, triple gear box under the herringbone pin suddenly broken at the plum-key, the mill was forced to stop production. Lack of spare parts in the case, I plant mobile unit immediately overhaul, after research, the bold use of the pinion heat sleeve connection process, less than 48 hours to complete the repair task. After nearly two years of practice observation, no contact crack or mismatch phenomenon was found in the contact area of herringbone teeth. Under the action of alternating cyclic loads, the strength of the pinion had no effect and the transmission was stable and reliable. This shows that the quality of the inspection is good. This maintenance process in the repair of heavy machinery, has many advantages, we introduce below.