Cable series selecting, ropeway cabling, designing calculation, selecting type and configuration of mechanical equipment and technology of installation and dismantling were researched systematacially in engineering design of skidding ropeway for thinning. Technology of "allowable load method" and steel tube backstay bracket for cable crane were applied in forestry ropeway engineering, "surplus length dispense with connection" technology for speed installing and dismantling closed tractive rope was presented. JP force increasing carriage with double ( single) rounds and optimizing rope series which are mated with JS2-0.8 type mobile winch set were designed.%对间伐集材索道工程设计中的索系选择、索道布线、设计计算、机械装备的选型与配置以及安装拆转技术进行系统研究；将缆索起重机“许用荷重设计法”和钢管桅杆支架技术应用到林业索道工程中,提出闭式牵引索快速安装和拆转的“余长免接法”技术,设计出JP双(单)轮增力跑车,以及与JS2-O.8自行式绞盘机组合配套的Ⅱ13型优化索系.
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