近年,据国外统计,在油锯造成的致伤事故中,27%(过去认为75%)归咎于反弹。而反弹受伤的部位主要在头郎和肩部,占总数的74%。反弹是当锯导板头部碰到一个固定物体时,引起导板向操作者弹起的现象。为了减少或消除反弹现象,锯链制造厂家主要是改进锯链和导板设计,尤其是导板头部的改进,且认为导板头部是唯一能防止 In recent years, according to foreign statistics, 27% (75% in the past) were attributed to a rebound in the accidental injury caused by the chainsaw. The rebound injured mainly in the head and shoulders, accounting for 74% of the total. The bounce is a phenomenon that causes the guide plate to pop up to the operator when the head of the saw guide hits a fixed object. In order to reduce or eliminate the phenomenon of rebound, the saw chain manufacturer is mainly to improve the saw chain and guide plate design, especially the improvement of the guide head, and that the guide head is the only way to prevent