桥架连接一般不用使用内连接片，通常应用外连接片较多，自然倘若你要想桥架更牢固，你里外一起装也是可以的，不外我感觉没必要，实际意义并不大，人力成本也高了。 桥架连接应满足下述标准：

Generally, the internal connecting piece is not used for bridge connection, and the external connecting piece is often used. Naturally, if you want to make the bridge more firm, you can install it inside and outside. However, I don't think it's necessary, the practical significance is not great, and the labor cost is also high. The bridge connection shall meet the following standards:

1.平行线段钢质电缆线桥架长短超出30m，铝合金型材或玻钢质桥架长短超出15m时，配有伸缩器；电缆线桥架超越建筑变形缝处设定赔偿设备。

1. when the length of steel cable tray in parallel section exceeds 30m, and the length of aluminum alloy profile or glass steel tray exceeds 15m, it shall be equipped with an extender; Compensation equipment shall be set at the place where the cable tray exceeds the building deformation joint.

2.电缆线桥架应在以下地区设定支架或支架：

2. the cable tray shall be provided with supports or supports in the following areas:

桥架连接头两边0.5m处；

0.5m on both sides of bridge connector;

每间隔1.5～3m处；

At an interval of 1.5 ~ 3M;

拐弯处；

Turning point;

竖直桥架每过1.5Km。

Every 1.5km of vertical bridge.

3. 支架和支架安装维持竖直、干净整洁、坚固、无倾斜状况。

3. support and support installation shall be vertical, clean, tidy, firm and free of inclination.

4. 桥架连接板螺丝固定不动牢固无遗漏，螺帽坐落于桥架两侧。

4. the screws of the bridge connecting plate shall be fixed firmly without omission, and the nuts shall be located on both sides of the bridge.

5. 缆桥架应埋设在易燃易爆物品气体管道和供热管道的下边。

5. the cable tray shall be buried under the flammable and explosive gas pipeline and heat supply pipeline.

6. 金属材料桥架以及支架总长应不少于2处接地装置或接零。

6. the total length of metal material bridge and support shall not be less than 2 grounding devices or neutral connections.

7. 金属材料桥架间连接片两边不少于2个有紧固螺丝帽或防松螺母的连接固定不动地脚螺栓，而且连接片两边跨接线不小于4mm2的铜芯电线接头。

7. there shall be no less than 2 fixed foundation bolts with fastening screw caps or locknuts on both sides of the connecting piece between metal material bridges, and the jumper wire on both sides of the connecting piece shall be no less than 4mm2 copper core wire joints.

济南电缆桥架厂家经过调查发现，甚多人们在安装连接时螺钉是外朝里安装的，这个是不正确的作法，因为在装线的情况下，会把电缆表皮刮伤，那样会得不偿失，这一点要注意。

After investigation, Jinan cable tray manufacturers found that many people install the screws from the outside to the inside when installing the connection, which is incorrect, because the cable skin will be scratched when installing the line, which will not pay off the gains. This should be noted.

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