The selection of cable bridge is not really good, installation is good, follow-up use is really good, the following small edition to popularize the basic process of correct installation of cable bridge, you can remember!

1、线槽径路选择原则：符合设计要求及施工规范，距离近，便于安装维护。

1. Route selection principle of trough: It conforms to design requirements and construction specifications, is nearest to each other, and is easy to install and maintain.

a.根据设计图纸检查线槽径路上所有孔洞是否全部完成，根据现场情况，确定线槽路径，避免与其他的线槽路径相冲突。

A. Check all the holes on the line groove path according to the design drawings, and determine the line groove path according to the site conditions, so as to avoid conflicts with other professional line groove paths.

b.在线槽始端终端找好水平和垂直线，用墨斗在顶棚或墙面弹线。

B. Find horizontal and vertical lines from the beginning of the slot to the end of the slot, and use ink bucket to springline the ceiling or wall.

2、吊架安装

2. Installation of hangers

a.按照每1.5米间距固定原则，在顶棚或墙面上划出安装孔位置，钻孔，敲入膨胀管冲紧。

A. According to the principle of fixed spacing per 1.5 meters, draw out the location of installation holes on the roof or wall, drill holes, punch in expansion pipe and press.

b.将吊架对准孔位，加上平垫、弹垫再带上螺杆，一人扶住吊架并同时靠上水平尺把吊架扶水平或垂直，另一人把螺杆固定牢固。

B. Align the hanger to the hole position, add flat cushion and bullet cushion with screw, one person holds the hanger and at the same time leans on the horizontal ruler to support the hanger horizontally or vertically, the other person holds the screw firmly.

c.在直线段的另外一端用同样的方法安装一组吊架。在前后两组吊架的安装线槽的平面用尼龙线拉通，尼龙线必须拉紧。再用尼龙线作为基准线调节中间安装的吊架。吊架与线槽的首端、分支、转角、接头及进出线盒处支、吊架固定的位置间距不大于0.5 米。

C. Install a group of hangers in the same way at the other end of the straight line segment. The plane of the installation groove of the front and rear two groups of hangers is pulled through with nylon wire, which must be tightened. The nylon wire is used as the reference line to adjust the suspension frame installed in the middle. The fixed distance between the hanger and the end, branch, corner, joint, support at the entry and exit boxes and the hanger is not more than 0.5 meters.

3、钢槽安装

3. Installation of Steel Channel

a.线槽的连接应连续无间断，每节线槽的固定点不应少于两个。在转角、分支处和端部均应有固定点，并应紧贴墙面固定。

A. The connection of grooves shall be continuous and uninterrupted, and the fixed points of each groove shall not be less than two. There should be fixed points at corners, branches and ends, and they should be fixed close to the wall.

b.钢槽直线段连接应采用连接板，用半圆头螺丝由内向外穿出加上平垫、弹垫螺帽紧固。连接处间隙应严密平齐。后钢槽内杂物，盖上盖板。槽盖应齐全、平整、无翘角。

B. Connecting plate shall be used for straight section connection of steel channel, and semi-circular head screw shall be used to penetrate from inside to outside, and flat cushion and bullet cushion nut shall be used for fastening. The gap between joints should be tightly and smoothly. Finally, remove the debris in the steel trough and cover the cover plate. The groove cover should be complete, flat and without warping angle.

c.固定或连接线槽的螺钉或其他紧固件，紧固后其端部应与线槽内表面光滑相接。

C. Screws or other fasteners for fixing or connecting grooves shall be tightened and their ends shall be smoothly connected with the inner surface of the grooves.

d.钢槽进行转角、分支连接时应采用弯通、二通、三通、四通等进行变通连接，钢槽末端应加装封堵板。线槽的出线口应位置正确、光滑、无毛刺。线槽敷设应平直整齐，水平或垂直允许偏差为其长度的百分之2，且全长允许偏差为20mm。

D. The bending, two-way, three-way and four-way connections should be adopted when the steel channel is connected at the corner and branch, and the plugging plate should be installed at the end of the steel channel. The outlet of the groove should be located correctly, smoothly and without burrs. Line groove laying should be straight and neat, horizontal or vertical allowable deviation is 2% of its length, and the allowable deviation of full length is 20 mm.

f.线槽两端必须做好跨接地线，并留有伸缩余量，地线使用铜编织线;但金属线槽不能作为设备的接地导体线槽必须单端接地。

F. Both ends of groove must be well grounded across the grounding wire, leaving a shrinkage allowance. The grounding wire should be braided with copper wire, but the grounding conductor groove of metal groove can not be used as equipment must be grounded at one end.

4、钢槽孔洞位置处理

4. Treatment of Hole Location in Steel Channel

钢槽在通过墙体或楼板处，不得在墙壁或楼板处连接，也不应将穿过墙壁或楼板的钢槽与墙或楼板上的孔洞用水泥摸死。应在穿缆后用防火泥封堵，并刷上与墙面相同色漆。

The steel trough shall not be connected at the wall or floor where it passes through the wall or floor, nor shall the steel trough passing through the wall or floor and the holes in the wall or floor be touched with cement. Fireproof mud should be used to plug the cable and paint the same color as the wall.

电缆桥架安装-接地

Cable Bridge Installation-Grounding

桥架安装要求横平竖直，表面平整，固定可靠，盖板严实，支架排布合理，整齐美观，桥架跨接线规范；桥架本体要加防松垫圈与支架可靠连接，连接处刮掉油漆。

Bridge erection requires horizontal and vertical, flat surface, reliable fixing, tight cover, reasonable arrangement of brackets, neat and beautiful, standard bridge spanning wiring; bridge body should be connected with brackets reliably by anti-loosening washers, and paint should be scraped off at the joint.

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