1、产品定义

1. Product Definition

电缆桥架(电缆托架)是由托盘或梯架的直线段、弯通、组件以及托臂(臂式支架)、吊架等构成具有密接支承电缆的刚性结构系统之全称。

Cable tray (cable tray) is a rigid structural system consisting of straight sections, bends, components, as well as support arms (arm brackets), hangers, etc. of trays or ladders that tightly support cables.

2、产品选用要点

2. Key points for product selection

电缆桥架、线槽及其支吊架使用在有腐蚀性环境中，应采用耐腐蚀的刚性材料制造，或采取防腐蚀处理，防腐蚀处理方式应满足工程环境和耐久性的要求。

Cable trays, trunking, and their supports and hangers used in corrosive environments should be made of corrosion-resistant rigid materials or treated with anti-corrosion measures that meet the requirements of engineering environment and durability.

电缆桥架在有防火要求的区段内，可在电缆梯架、托盘内添加具有耐火或难燃性能的板、网等材料构成封闭或半封闭式结构，并采取在桥架及其支吊架表面涂刷防火涂层等措施，其整体耐火性能应满足有关规范或标准的要求。

In sections with fire protection requirements, cable trays can be constructed with enclosed or semi enclosed structures by adding fire-resistant or flame-retardant materials such as plates and nets to cable ladders and trays. Measures such as applying fire-resistant coatings to the surfaces of cable trays and their supports and hangers should be taken, and their overall fire resistance performance should meet the requirements of relevant specifications or standards.

在工程防火要求较高的场所，不宜采用铝合金电缆桥架。

Aluminum alloy cable trays should not be used in places with high fire prevention requirements.

电缆梯架、托盘宽度和高度的选择应符合填充率的要求，电缆的梯架和托盘内的填充率在一般情况下，电力电缆可取40%~50%，控制电缆可取50%~70%，且宜预留10%~25%工程发展裕量。

The selection of cable ladder and tray width and height should meet the requirements of filling rate. In general, the filling rate inside the cable ladder and tray can be set at 40%~50% for power cables and 50%~70% for control cables, with a 10%~25% engineering development margin reserved.

在选择电缆桥架的荷载等级时，电缆桥架的工作均布荷载不应大于所选电缆桥架荷载等级的额定均布荷载，如果电缆桥架的支吊架的实际跨距不等于2m 时，则工作均布荷载应满足要求。

When selecting the load level of the cable tray, the working uniform load of the cable tray should not exceed the rated uniform load of the selected cable tray load level. If the actual span of the support and hanger of the cable tray is not equal to 2m, the working uniform load should meet the requirements.

各种组件及支吊架在满足相应荷载的条件下，其规格尺寸应与托盘、梯架的直线段、弯通系列相匹配。

The specifications and dimensions of various components and supports and hangers should match the straight sections and bending series of pallets and ladders under the corresponding load conditions.

在选择电缆桥架的弯通或引上、引下装置时，不应小于电缆桥架内电缆较小允许弯曲半径。

When selecting the bending or leading devices for cable trays, they should not be smaller than the allowable bending radius for smaller cables inside the cable tray.

对于跨距大于6m 的钢制电缆桥架和跨距大于2m 或承载要求大于荷载等级D级的铝合金电缆桥架，应按工程条件进行强度、刚度及稳定性的计算或试验验证。

For steel cable trays with a span greater than 6m and aluminum alloy cable trays with a span greater than 2m or load-bearing requirements greater than load level D, strength, stiffness, and stability calculations or experimental verification should be carried out according to engineering conditions.

几组电缆桥架在同一高度平行敷设时，各相邻电缆桥架之间应考虑维护、检修距离。

When several sets of cable trays are laid in parallel at the same height, maintenance and repair distances should be considered between adjacent cable trays.

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