目前主索打油的方法甚多,往往随两岸錨定的結构形式而異。錨定为滾筒的,則放松滾筒降低过河索打油。錨定为鋼筋卡子和其它固定支座的,用絞車或吊鏈来降低过河纜打油。在跨度較小的河流上,也有用纜車直接在高空打油的。但是,这些方法都各有一些缺点。例如放松滾筒不仅需要較多的工具及劳力,而且易于損坏支架或发生其它事故;用絞車和吊 At present, there are many methods for oiling the main line, often depending on the structure of anchoring the two sides of the Strait. Anchored as a roller, then relax the roller to reduce the hitting oil. Anchors for steel clamps and other fixed supports, with a winch or hanging chain to reduce oil over the river cable. In the span of the smaller rivers, there are also useful cable directly at high altitude oil. However, each of these methods has its own drawbacks. For example, relaxing the drum not only requires more tools and labor, but also tends to damage the bracket or other accidents; with a winch and a crane