Cable tray (cable tray) is the full name of rigid structure system with tight supporting cable, which is composed of straight section, bend, component, arm (arm support), hanger of tray or ladder.

產(chǎn)品選用要點(diǎn)

Key points of product selection

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

1) When cable tray, trunking and their supports and hangers are used in corrosive environment, they shall be made of corrosion-resistant rigid materials or treated with anti-corrosion treatment. The anti-corrosion treatment method shall meet the requirements of engineering environment and durability.

2)電纜橋架在有防火要求的區段內，可在電纜梯架、托盤(pán)內添加具有耐火或難燃性能的板、網(wǎng)等材料構成封閉或半封閉式結構，并采取在橋架及其支吊架表面涂刷防火涂層等措施，其整體耐火性能應滿(mǎn)足有關(guān)規范或標準的要求。

2) In the section with fire protection requirements, the cable ladder and tray can be added with fire-resistant or flame-retardant plates, nets and other materials to form a closed or semi closed structure, and the fire-resistant coating shall be applied on the surface of the cable tray and its supports and hangers, and the overall fire resistance shall meet the requirements of relevant national codes or standards.

3)在工程防火要求較高的場(chǎng)所，不宜采用鋁合金電纜橋架。

3) Aluminum alloy cable tray should not be used in places with high fire protection requirements.

4)電纜梯架寬度和高度的選擇應符合填充率的要求，電纜的梯架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%，且宜預留10%～25%工程發(fā)展裕量。

4) The selection of cable ladder width and height shall meet the requirements of filling rate. Generally, the filling rate of cable ladder can be 40% - 50% for power cable and 50% - 70% for control cable, and 10% - 25% of engineering development margin should be reserved.

5)在選擇電纜梯架的荷載等級時(shí)，電纜橋架的工作均布荷載不應大于所選電纜橋架荷載等級的額定均布荷載，如果電纜橋架的支吊架的實(shí)際跨距不等于2m時(shí)，則工作均布荷載應滿(mǎn)足要求。

5) When selecting the load level of the cable ladder, the working uniform load of the cable tray shall not be greater than the rated uniform load of the selected load level of the cable tray. If the actual span of the support and hanger of the cable tray is not equal to 2m, the working uniform load shall meet the requirements.

6)各種組件及支吊架在滿(mǎn)足相應荷載的條件下，其規格尺寸應與托盤(pán)、梯架的直線(xiàn)段、彎通系列相匹配

6) Under the condition of meeting the corresponding load, the specifications and dimensions of various components and supports and hangers shall match the straight section and bend through series of pallets and ladders

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

7) When selecting the bending or leading up and down devices of the cable tray, it should not be less than the small allowable bending radius of the cable in the cable tray.

8)對于跨距大于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D級的鋁合金電纜橋架，應按工程條件進(jìn)行強度、剛度及穩定性的計算或試驗驗證。

8) For steel cable tray with span greater than 6m and aluminum alloy cable tray with span greater than 2m or bearing requirement greater than load level D, strength, stiffness and stability calculation or test verification shall be carried out according to engineering conditions.