At present, the cable bridge elbows used in power construction are generally well processed by the cable bridge factory before leaving the factory. However, because the construction site conditions are different, some projects need to tailor and process the cable bridge elbows on site, which requires the installation personnel to have certain basic construction knowledge.

施工现场山东电缆桥架大致分为主桥架和分支架。主桥架是由规划院规划，依据图纸施工；分支架是由主桥架引到就地设备的电缆支架，没有图纸规划，依据现场状况由施工人员来规划的。常用的弯头品种包含水平弯头90°、上下跳弯45°、笔直上下弯头、水平三通等。下面就以几个典型常用弯头制作方法和质量要求来谈一下。

The cable bridge in the construction site is roughly divided into main bridge and sub support. The main bridge is planned by the Planning Institute and constructed according to the drawings; The sub support is the cable support led from the main bridge to the local equipment. There is no drawing planning, and it is planned by the construction personnel according to the site conditions. Common elbow varieties include horizontal elbow 90 °、 Jump up and down 45 °、 Straight up and down elbow, horizontal tee, etc. The following is a few typical common elbow manufacturing methods and quality requirements to talk about.

克己的山东电缆桥架弯头、跳弯、三通的衔接处，应先在内侧进行点焊固定并把毛刺药皮打磨洁净，外侧应平坦，缝隙应尽量小且锯口处平坦规整。电缆桥架弯头对接无错边，焊接后的对口处应打磨平坦、光亮，不该有损害电缆绝缘层的毛刺、锐边等棱角。

For the joint of Keji cable bridge elbow, jump bend and tee, spot welding should be carried out on the inner side first, and the burr coating should be polished clean. The outer side should be flat, the gap should be as small as possible, and the saw edge should be flat and regular. The butt joint of cable tray elbow shall be free of misalignment. The butt joint after welding shall be polished flat and bright, and there shall be no burr, sharp edge and other edges and corners damaging the cable insulation layer.

在托盘式山东电缆桥架内加钢筋时，选用添加￠6-8MM圆钢，内、外侧都应补刷油漆。刷油漆前，应把药皮，焊渣整理洁净。多层电缆桥架的克己三通及弯头装置完成后，折角应在笔直的一致直线上。

When adding reinforcement in tray type cable tray, ￠ 6-8mm round steel shall be added, and the inner and outer sides shall be repainted with paint. Before painting, clean the coating and welding slag. After the completion of Keji tee and elbow device of multi-layer cable tray, the bending angle shall be in a straight and consistent line.