林用龙门起重机与装卸桥(以下简称起重机)广泛用于贮木场、制材厂、木材转运站等部门的木材装卸作业中。目前仅吉林林区就投产40台,从1965年开始在林业部门推广使用以来,对其使用及维修保养重视不够,缺乏系统的调查研究工作,所以设备使用周期短、维修费用高,生产效率没有得到充分发挥,影响了起重机的使用与推广。为此,结合起重机设计与使用的实践,将起重机的故障原因,解决措施作以初步的分析、探讨,以供参考。一、起重机大小车运行啃轨起重机在正常运行时,车轮轮缘和轨道头部是有一定间隙的。当两侧车轮运行 Forestry gantry cranes and loading and unloading bridge (hereinafter referred to as crane) is widely used in lumber yard, timber plant, timber transfer station and other departments of timber handling operations. At present, only 40 forest units have been put into operation in Jilin Forest District. Since 1965, the forestry department started to promote the use of the forest products. Since it lacks sufficient attention on its use and maintenance, it lacks a systematic investigation and research work. Therefore, the equipment has short service life, high maintenance cost and no production efficiency Get full play, affecting the crane’s use and promotion. To this end, combined with the crane design and use of practice, the cause of the crane failure, to make a preliminary analysis of the measures to explore for reference. First, the crane running the car gnawing rail crane in normal operation, the wheel rim and rail head is a certain gap. When both wheels are running