深井施工用反井钻机钻具的选材和设计

为了适应深部采煤的发展和反井钻机的深井施工的需要,介绍了深井施工用反井钻机钻具在设计时材料的选择方法、钻具配套螺纹选择方法以及偏梯形锥螺纹的主要应用场合,并着重介绍了偏梯形锥螺纹联接强度和钻具强度的计算方法、偏梯形锥螺纹与三角形锥螺纹的受力强度比较.结果表明,在深井施工用钻具中,采用40CrNiMoA材料来制造钻具,牙型采用偏梯形锥螺纹牙型,可以大幅提高钻具的强度和可靠性,并能适当延长钻具的使用寿命.

Design and material selection on drilling tools of raising boring machine for deep mine shaft construction

In order to meet the development of the depth coal mining and the requirements of the deep mine shaft construction with the raising boring machine,the paper introduced the material selection method and the drilling tools thread selection method for the deign of the drilling tools for the deep mine shaft construction with the raising boring machine.The paper also introduced the main application of the ladder type cone thread.The paper introduced the connecting strength of the ladder type cone thread and the ...