闸门启闭机，又称为启闭机闸门，是一种大型水利机械产品闸门启闭机关系到水工建筑物的正常运行，除应满足一般起重机械的设计要求外，工作安全可靠和操作灵活方便具有特殊的意义。
拦污栅与启闭机、检修闸门与启闭机的连接，采用了易于存放又避免拆卸拉杆、明显节省操作时间的起重环链。
The connections between trash rack and hoist as well as between service gate and hoist are achieved by hoisting chain that is apt to place and is time saving without tearing down pull rod.
本文把闸门与启闭机的安全性作为研究对象。
This text regards the security of the gates and hoists as the research object.
门式起重机是水利水电工程中不可缺少的大型设备之一，在水电站用于开启和关闭闸门的门式起重机称为门式启闭机。
Gantry crane is the indispensable one of the large-scale equipments in hydropower station, the gantry cranes which are used in hydropower to open and close sluice gates are named gantry hoists.
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