桥式起重机的跨中上拱度是一项非常重要的质量指标。目前上拱度测量比较普遍采用的是钢丝测量法。为了方便准确地测量出桥式起重机的拱度值,我们制作了测拱拉力器,钢丝拉力调整由KL-20型管型测力计来显示。测拱拉力器结构如图所示,夹具体5由钢板焊接而成。夹具体上两只M8支紧螺栓4起压紧固定作用。小钩1被焊接在螺母2上。调整时,由于钢丝拉力而使螺杆3调节费力,因此在螺杆一端装有8203 Overhead capping bridge crane is a very important quality indicators. At present the camber measurement is more commonly used wire measurement method. In order to conveniently and accurately measure the camber value of the bridge crane, we made a measuring armature, and the adjustment of the wire tension is shown by the KL-20 type dynamometer. Measuring arch tensile structure as shown, the clamp body 5 welded steel plate. Clamp on the two M8 bolt 4 from the fastening effect. The small hook 1 is welded to the nut 2. Adjustment, due to the tension of the wire and the screw 3 to adjust the laborious, so one end of the screw equipped with 8203