Most common performance is that the two team lined up in a circle by lifting their drums, and the team wins the game by beating and holding the drum in the air forlonger period of time.
Automatic lifting of shearer drum is one of key techniques of coal face automation, and its core is identification technique of coal and rock interface.
滚筒自动调高是实现采煤工作面自动化的关键技术之一，其核心是煤岩分界识别技术。
3
In the process of lifting the high pressure steam drum of a 9e HRSG, great deformation and stress may happened to the drum and associated pipes.