【摘要】 本文分析研究了林用门式起重机的技术条件,技术条件中包括对林用门式起重机的机械件、钢结构件和电器装置等的要求。介绍了林用门式起重机的现状及未来的发展。更多还原

【Abstract】 The technical conditions of portal bridge crane in forestry were analysed. It consists of mcchanical parts, structural components of stcel, clcctric installations ctc. And the prcsent situation and future development of portal bridge crane in forestry were introduced in this paper.更多还原