论文部分内容阅读
目前,许多国家山地林区进行木材采伐作业多采用索道集材。罗马尼亚应用集材距离达一千米的自动跑车索道,也应用集材距离达四百米的简易索道(缆索起重机式)。简易索道起重量三吨,它由自行式驱动装置、跑车和钢索索具组成。它能逆坡集材,也能顺坡集材;能全悬式集材,也能半悬式集材。线路坡度达四十五度。这种索道也可以用来装车和小集中。索道的驱动装置(三卷筒绞盘机)和钢架杆装配在轮式底盘上。架杆高六米,装有穿过承载索、牵引索和超重索的滑车。当坡
At present, many countries use mountainous areas for timber harvesting mostly using ropeway materials. In Romania, automatic sports car ropes up to one kilometer in length are used, and simple ropes (rope-cranes) in the distance of up to 400 meters in skidding are also used. The simple cableway weighs three tons and consists of a self-propelled drive, sports car and cable rigging. It can reverse the slope of the skid, but also smooth slope skidding; can be fully suspended skid, but also semi-suspended skidding. Line slope up to forty-five degrees. This cableway can also be used for loading and small concentration. Ropeway drive (three-drum winch) and steel rod mounted on the wheel chassis. The pole is six meters high and is equipped with a pulley that passes through the carrying cable, the traction cable and the overweight cable. When the slope