【摘要】 在顶板松软(破碎)的采煤工作面设置护顶是一个技术难题。针对现场的需要,设计制备了一种以改性MC尼龙为原材料的护顶铰接顶梁。该顶梁具有普通金属铰接顶梁的各种功能,且顶梁宽度由金属顶梁的80mm增至540mm,而件重比原金属顶梁略轻。更多还原

【Abstract】 The installation of the top protection is a technical difficult problem in the condition of the soft(broken ) top plate for coal face. In view of the worksite demand, a noosing cross beam for the lop protection was designed with MC nylon as raw material. This cross beam has all kinds of functions for the ordinary metal beam, its weadth is increabed to 540 mm from 80 mm of metal beam, and the beam weight is a little lighter than the metal beam.更多还原