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集材—50拖拉机是我国东北林区林业专用集材机械,在使用过程中,经常出现一些主要部件的变形过大或出现裂纹,据不完全统计,在一个大修期(二年)后桥箱发生裂纹失效(即不能使用)达60％以上,车架缺口处出现裂纹失效也达15％以上。这不仅增加了维修费用,同时影响了木材生产,为了解车架和后桥箱在各种工况下的受力情况。在友好林业局友好机修厂场院,对集材—50拖拉机原车(未改造的车)的车架和后
Skidding-50 tractor is the forestry-specific forestry machinery in the northeast China’s forestry area. In the process of using, the over-deformation or cracks of some main components often appear. According to incomplete statistics, in a overhaul period (two years) Occurred crack failure (that is, can not be used) up to 60%, cracks occurred at the frame notch failure also reached 15%. This not only increased maintenance costs, but also affected the timber production, in order to understand the frame and rear axle box in a variety of conditions under stress conditions. At the friendly forestry bureau friendly mechanic factory yard, on the skid-50 tractor original car (unbuilt car) frame and after