Feeding mechanism: bucket hoisting and manual double bell jar feeding mechanism is adopted which is easy to operate and can prevent gas leakage efficiently.
加煤机构：采用斗提卷扬机构，手动双钟罩加煤装置，操作简便、能有效防止煤气泄漏。
2
Traditional method for overhaul of the top of miter gate is through manual operation by hydraulic hoisting jack which has the shortcomings of low efficiency and great risk.
摘要船闸人字门顶门检修的传统方法是采用液压千斤顶手动作业，工作效率低，时间长，技术风险大。
3
The repairing and maintaining of the hoisting machine should be carried out according to the demands of the usage manual.