Under the action of tensile stress and tensile stress, the bolt with relatively low strength will crack first, and then the fatigue fracture will occur.
在拉应力和应拉力交替的作用下，强度相对较低的螺栓会先产生裂纹，进而发生疲劳断裂。
With material mechanics theory, expounded bolt tail subjected to no center load action and roof bolt broken mechanism while roadway was supported with bolts.
应用材料力学理论，阐明了锚杆支护时锚尾一定受到偏心载荷作用和顶板锚杆破断的机理。
This paper discusses the application of calculation formulas of high strength bolt connection in bearing type under the action of both shearing force and axial tensile force.
本文讨论了承压型高强度螺栓连接在同时承受剪力和杆轴方向拉力时其计算公式的应用。
The parameters of suspension roof support were determined based on hanging action with a bolt-wire or cable truss.
应用锚杆兜吊和锚索悬吊两种作用设计了锚杆支护参数。
Coupling is a coupling of locomotive and car parts, commonly used have a link bolt and rotary chain, large car adopts automatic coupling with both buffer action.
联接器是联接机车和矿车的部件，常用的有插销链环和回转链，大型矿车采用兼具缓冲器作用的自动车钩。
Coupling is a coupling of locomotive and car parts, commonly used have a link bolt and rotary chain, large car adopts automatic coupling with both buffer action.
联接器是联接机车和矿车的部件，常用的有插销链环和回转链，大型矿车采用兼具缓冲器作用的自动车钩。
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