上海叉车有限公司的2～3吨叉车转向桥一直沿用柳工原联合设计的图纸生产,旧桥结构如图1所示。多年来,据用户和三包维修人员反映,该部件故障频繁,返修率较高,由损坏的零件实物观察,事故现象及原因分析如下: 一、转向桥体左右两端主销轴上下座孔单边不均匀磨损,φ38销轴孔磨变成椭圆 Shanghai Forklift Co., Ltd. 2 to 3 tons forklift steering axle has been used in conjunction with the original design of the drawings produced Liuzhou, the old bridge structure shown in Figure 1. Over the years, according to the user and warranty repair staff reflect the frequent parts failure, the repair rate is high, the physical observation of the damaged parts, the accident and the reasons as follows: First, turn the bridge at both ends of the main pin shaft pin Unilateral wear, φ38 pin hole into an oval mill