大型矿用挖掘机尾部电缆卷筒自动收放装置的开发

Development of auto-retracting unit for tail cable drum in a large excavator

详细介绍了电缆卷筒自动收放装置的结构特点、关键技术及设计要点，通过国内外技术水平的对比和工业应用，证明了该装置结构合理、安全可靠，实现了尾部电缆拖动的机械化、自动化，大大提高了挖掘机的工作效率，具有推广应用价值.

Structural charactristics, key technique anddesigning attention points of the auto-retracting unit for tailcable drum are introduced in detail. Reasonable structure. safety and reliability of the unit are proved through comparingwith the domestic and foreign technical level and industrialapplication, therefore,mechanization and automatization of thetail cable traction are realized and excavator efficiency is largely improved. So the unit is useful with spreading applicationvalue.