1. When it is necessary to shield the cable network from electrical interference or when there is a requirement to protect against external influences (such as corrosive liquids, flammable dust, etc.), (FB) type slot type composite anti-corrosion shielding cable tray (with cover) should be selected.

2、强腐蚀性环境应采用(F)类复合环氧树脂防腐阻燃型电缆桥架。托臂、支架也要选用同样材料，提高桥架及附件的使用寿命，电缆桥架。在容易积灰和其它需遮盖的环境或户外场所宜加盖板。

2. Strong corrosive environments should use (F) composite epoxy resin anti-corrosion and flame-retardant cable trays. Brackets and brackets should also be made of the same materials to improve the service life of cable trays and accessories. Cover plates should be added in environments or outdoor areas that are prone to dust accumulation and require covering.

3、除上述情况外，可根据现场环境及技术要求选用托盘式、槽式、梯级式、玻璃防腐阻燃电缆桥架或钢质普通型桥架。在容易积灰和其它需遮盖的环境或户外场所宜加盖板。

3. In addition to the above situations, tray type, trough type, stepped type, glass anti-corrosion flame-retardant cable tray or steel ordinary type tray can be selected according to the on-site environment and technical requirements. Cover plates should be added in environments or outdoor areas that are prone to dust accumulation and require covering.

4、在公共通道或户外跨越道路段，底层梯级的底部宜加垫板或在该段使用托盘。大跨距跨越公共通道时，可根据用户要求提高桥架的载荷能力或选用行架。

4. In public passages or outdoor crossing road sections, it is advisable to add a pad at the bottom of the bottom step or use a pallet at that section. When crossing a public passage with a large span, the load capacity of the bridge can be increased or a gantry can be selected according to user requirements.

5、大跨距(>3m)要选用复合型桥架(FB)。

5. Composite cable trays (FB) should be used for large spans (>3m).

6、户外要选用复合环氧树指桥架(F)。

6. Composite epoxy tree finger bridge (F) should be selected for outdoor use.

电缆桥架的小知识 ，您了解多少？

How much do you know about cable trays?

电缆桥架厂家直销规格选择

Selection of direct sales specifications for cable tray manufacturers

1、复合环氧树脂电缆桥架的宽度和高度就按下表选择，并应符合电缆真充率不超过有关标准规范的规定值，动力电缆可取40-50，控制电缆可取50-70，另外需予留10-25的式程发展余量。

1. The width and height of the composite epoxy resin cable tray should be selected according to the following table, and should comply with the cable true filling rate not exceeding the specified values of relevant standards and specifications. Power cables can be taken as 40-50, control cables can be taken as 50-70, and a process development margin of 10-25 should be left.

2、各种弯通及附件规格应符合工程布置条件并与桥架相配套。

2. The specifications of various bends and accessories should comply with the engineering layout conditions and be matched with the bridge.

3、支、吊架规格的选择，应按桥架规格、层数、跨距等条件配置。并应满足荷载的要求。

3. The selection of support and hanger specifications should be based on conditions such as cable tray specifications, number of layers, and span. And it should meet the requirements of the load.

对于电缆桥架的支、吊架的配置

Configuration of supports and hangers for cable trays

1、户内支、吊短跨距一般采取1.5-3m;户外立柱中跨距一般采取6m。

1. The short span of indoor support and suspension is generally 1.5-3m; The span of outdoor columns is generally 6 meters.

2、非直线段的支、吊架配置就遵循以下原则：当桥架宽度<300mm时，应在距非直线段与直线结合处300-600m的直线段侧设置一个支、吊架;当桥架宽度>300mm时，除符合下述条件外，在非直线段中部还应增设一个支、吊架。

2. The configuration of supports and hangers for non linear sections follows the following principles: when the bridge width is less than 300mm, a support or hanger should be set on the side of the straight section 300-600m away from the junction of the non linear section and the straight line; When the width of the bridge is greater than 300mm, in addition to meeting the following conditions, a support and hanger should also be added in the middle of the non linear section.

3、拉挤玻璃钢电缆桥架多层设置时层间中间距为200，250，300，350mm。

3. When the pultruded fiberglass cable tray is set in multiple layers, the interlayer spacing is 200250300350mm.

4、桥架直线段每隔50m应予留伸缩缝20-30mm(金属桥架)。

4. Expansion joints of 20-30mm (metal bridge) should be left every 50m in the straight section of the bridge.

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