三峡船闸人字门底枢检修低位顶门方案

Low-position lifting scheme for overhaul of miter gate’s bottom hinge of the Three Gorges ship lock

人字门是三峡船闸重要设备之一,其运行频次高,加速了底枢故障率的发生,必须定期实施顶升进行底枢检查与修理。目前,人字门检修通常是在计划性停航检修期间,采用高位顶门检修工艺,须实施拆除顶枢及启闭机构、固门等工序,适合工期较长的计划性大修项目。针对人字门底枢日常运行中可能存在的突发故障,提出在不拆除顶枢时对人字门低位顶门、应用底枢移出装备及配套工装实施底枢移出的检修方案。研究表明,该底枢检修低位顶门方案具有可行性,可为三峡船闸人字门顶门检修提供备选方案。

The miter gate is one of the important equipments of the Three Gorges ship lock.It has a high frequency of operation and accelerates the occurrence of the bottom hinge failure rate.It must be periodically lifted for bottom hinge inspection and repair.Currently,the miter gate’s overhaul is usually implemented during the planned shutdown.The high-position lifting of the miter gate overhaul needs to demolish the top hinge and opening and closing mechanism,and fix the miter gate,which is suitable for the planned overhaul project with long construction period.Aiming at the sudden failures that may exist in the daily operation of the bottom hinge of the miter gate,we propose the overhaul plan of using the bottom hinge removal equipment and the supporting tooling to implement the bottom hinge removal without removing the top hinge.The research result proves that the scheme of low-position lifting of the miter gate for the overhaul of the bottom hinge is feasible,and it provides an alternative for the lifting miter gate overhaul of the Three Gorges ship lock.