1) metal hinge top beam
金属铰接顶梁
1.
The reforming basic structure of HDJA-1000 metal hinge top beam is introduced.
介绍了HDJA-1000型金属铰接顶梁的改造基本结构,阐述了改造后在采煤工作面应用的多种功能,及其经济性、可靠性和安全性。
2) hinged bar
铰接顶梁
3) metal roof beam
金属顶梁
4) intersection hinge roof
十字铰接顶梁
1.
Based on S1-5 up-seam of Changcun mining workface is isolated island face,behavior of rockstrate is clear, cross-section of roadway weaken and reduct and roadway floor heave, through comparing with science, metal intersection hinge roof cooperate hydraulic prop in driving roadway, lead safeguards and manages roof, it gains good result.
针对常村煤矿S_(1-5)上分层综采工作面是一“孤岛”采面,矿压显现明显、回采巷道断面收敛回缩以及巷道严重底鼓的状况,经科学比较,采用金属十字铰接顶梁配合单体柱在回采巷道中进行超前维护管理顶板,收到了显著效果。
5) ball joint roof bar
球铰顶梁
6) type-π of metal cap
金属π型顶梁
补充资料：顶梁
1.头顶。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条