Pallet cable bridge is widely used in petroleum, chemical industry, light industry, television, telecommunications and other fields. It has the advantages of light weight, large load, beautiful shape, simple structure and convenient installation. It is not only suitable for the installation of power cable, but also suitable for the laying of control cable. Next, our cable bridge manufacturers will introduce to you the main points of tray cable bridge selection, hoping to help you all! ____________

1.在選擇電纜橋架的荷載等級(jí)時(shí)，電纜橋架的工作均布荷載不應(yīng)大于所選電纜橋架荷載等級(jí)的額定均布荷載，如果電纜橋架的支吊架的實(shí)際跨距不等于2m時(shí)，則工作均布荷載應(yīng)滿足要求。

1. When choosing the load grade of the cable bridge, the working uniform load of the cable bridge should not be greater than the rated uniform load of the load grade of the selected cable bridge. If the actual span of the suspension of the cable bridge is not equal to 2 m, the working uniform load should meet the requirements.

2.在工程防火要求較高的場(chǎng)所，不宜采用鋁合金電纜橋架。

2. Aluminum alloy cable bridge should not be used in places with high fire protection requirements.

3.電纜橋架、線槽及其支吊架使用在有腐蝕性環(huán)境中，應(yīng)采用耐腐蝕的剛性材料制造，或采取防腐蝕處理，防腐蝕處理方式應(yīng)滿足工程環(huán)境和耐久性的要求。

3. Cable bridges, grooves and their support and hangers should be made of corrosion-resistant rigid materials in corrosive environments or be treated with corrosion protection, which should meet the requirements of engineering environment and durability.

4.電纜梯架、托盤寬度和高度的選擇應(yīng)符合填充率的要求，電纜的梯架和托盤內(nèi)的填充率在一般情況下，電力電纜可取40%～50%，控制電纜可取50%～70%，且宜預(yù)留10%～25%工程發(fā)展裕量。

4. The selection of cable ladder, tray width and height should meet the requirement of filling rate. In general, the filling rate in cable ladder and tray can be 40%-50% for power cable, 50%-70% for control cable, and 10%-25% for engineering development margin should be reserved.

5.各種組件及支吊架在滿足相應(yīng)荷載的條件下，其規(guī)格尺寸應(yīng)與托盤、梯架的直線段、彎通系列相匹配。

5. The specifications and sizes of various components and supports and hangers should be matched with the straight sections of pallets, ladders and bending-through series under the conditions of meeting the corresponding loads.

6.電纜橋架在有防火要求的區(qū)段內(nèi)，可在電纜梯架、托盤內(nèi)添加具有耐火或難燃性能的板、網(wǎng)等材料構(gòu)成封閉或半封閉式結(jié)構(gòu)，并采取在橋架及其支吊架表面涂刷防火涂層等措施，其整體耐火性能應(yīng)滿足有關(guān)規(guī)范或標(biāo)準(zhǔn)的要求。

6. In the section with fire protection requirements, the cable bridge can be enclosed or semi-enclosed by adding fire-resistant or flame-retardant materials such as boards and nets to the cable ladder and tray. Measures such as coating fire-resistant coatings on the surface of the bridge and its support and hanger should be taken. The overall fire resistance of the cable bridge should meet the requirements of relevant national standards or standards.

7.在選擇電纜橋架的彎通或引上、引下裝置時(shí)，不應(yīng)小于電纜橋架內(nèi)電纜小允許彎曲半徑。

7. The minimum allowable bending radius should not be less than the minimum allowable bending radius of the cables in the cable bridge when choosing the bending or pulling-up and pulling-down devices of the cable bridge.

8.幾組電纜橋架在同一高度平行敷設(shè)時(shí)，各相鄰電纜橋架之間應(yīng)考慮維護(hù)、檢修距離。

8. When several groups of cable bridges are laid parallel at the same height, the maintenance and repair distances between adjacent cable bridges should be considered.

9.對(duì)于跨距大于6m的鋼制電纜橋架和跨距大于2m或承載要求大于荷載等級(jí)D級(jí)的鋁合金電纜橋架，應(yīng)按工程條件進(jìn)行強(qiáng)度、剛度及穩(wěn)定性的計(jì)算或試驗(yàn)驗(yàn)證。

9. Strength, stiffness and stability of steel cable bridge with span greater than 6 m and aluminium alloy cable bridge with span greater than 2 m or bearing requirement greater than load grade D should be calculated or tested according to engineering conditions.

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