电缆桥架是电气工程中用于支撑和保护电缆的重要设备，选择合适的电缆桥架对于保障电气系统的和稳定关重要。然而，很多人在选择电缆桥架时常常感到困惑，不知道该如何下手。究其原因，主要是因为对电缆桥架的关键因素了解不够深入。那么电缆桥架型号结构是什么？又应该如何选型呢？下面本文就给大家详细地讲一讲，希望能给广大电气人员一些参考。▌

　　Cable tray is an important equipment used in electrical engineering to support and protect cables. Choosing a suitable cable tray is crucial for ensuring the safety and stability of the electrical system. However, many people often feel confused when choosing cable trays and do not know how to proceed. The main reason is due to insufficient understanding of the key factors of cable trays. So what is the model and structure of the cable tray? How should we choose? The following article will give you a detailed explanation, hoping to provide some reference for electrical personnel. ▌

　　电缆桥架型号和结构常规桥架型号有槽式无孔托盘、有孔托盘、梯架、中间加隔板的、还有网格式。

　　Cable tray models and structures: Conventional tray models include slot type non perforated trays, perforated trays, ladder racks, intermediate partition boards, and mesh formats.

　　1、槽式桥架槽式无孔托盘桥架，室内外电缆线敷设如果不需要考虑散热，用槽式无孔托盘桥架就对了，因为它密封性好，可以抵挡一切外部因素对槽体内电缆线的损坏，从而更好的达到防护作用。

　　1. Trough type cable tray with no holes is suitable for indoor and outdoor cable laying without considering heat dissipation. It has good sealing and can withstand all external factors that may damage the cables inside the tray, thus achieving better protection.

　　2、托盘桥架有孔托盘桥架，它跟无孔托盘桥架其实结构形状是一样的，唯独它槽体底部多了散热孔，因为口径大的电缆线正常运行时，会有很大的热流，就需要具备散热性的桥架敷设，如果要有很好的密封性防护又要散热效果的，选有孔托盘桥架。

　　2. The tray bridge with holes has the same structural shape as the tray bridge without holes, except that there are more heat dissipation holes at the bottom of the groove. When large-diameter cables run normally, there will be a lot of heat flow, so a tray with heat dissipation is needed for laying. If you want good sealing protection and heat dissipation effect, choose a tray with holes.

　　3、梯式桥架梯架，我们也叫它梯式桥架，它优势也是散热透气性好，而且它的载荷力比无孔托盘和有孔托盘更强，它常被用于直径较大的电缆敷设，特别是高低压动力电缆，电缆功率大了，梯架可以起到更好的散热性和载荷力。

　　3. Ladder style cable tray, also known as ladder style cable tray, has the greatest advantage of good heat dissipation and air permeability. Its load capacity is stronger than that of non perforated trays and perforated trays. It is often used for laying larger diameter cables, especially high and low voltage power cables. With higher cable power, the ladder can provide better heat dissipation and load capacity.

　　4、中间加隔板的桥架中间加隔板的桥架，现在你们看到的这个是无孔托盘中间加了块隔板的桥架，这块隔板一样可以加在，有孔托盘、梯架还有网格式桥架里面，当动力电缆和控制电缆敷设在同一条桥架内，这块隔板就可以把它们很好的分开，防止电磁干扰，来确保控制电缆正常运行。

　　4. The bridge with a partition added in the middle is a bridge with a partition added in the middle. What you see now is a bridge with a non perforated tray and a partition added in the middle. This partition can also be added to perforated trays, ladder frames, and grid trays. When power cables and control cables are laid in the same bridge, this partition can separate them well to prevent electromagnetic interference and ensure the normal operation of control cables.

　　5、网格式桥架网格式桥架，网状形状，这类桥架做网络通讯工程的朋友肯定不陌生，常用于网络数据机房里面，数据网络机房电缆线多，口径功率大，且频繁需要引入/引出的布线，网格桥架就起到它的优势了，散热性好且方便维护。

　　5. Network format cable tray, with a mesh shape, is definitely familiar to friends who are engaged in network communication engineering. It is most commonly used in network data rooms, where there are many cables with large diameter and power, and frequent wiring needs to be introduced/introduced. Grid cable tray plays its advantage, with good heat dissipation and easy maintenance.

　　▌电缆桥架选型时，需要考虑的几个关键因素在选择电缆桥架时，需要考虑以下几个关键因素：

　　When selecting cable trays, the following key factors need to be considered:

　　1、电缆类型和数量：根据电缆的类型和数量，选择合适的桥架形式和种类。例如，如果电缆需要做屏蔽抗干扰，应选用带隔板的潮湿桥架；如果电缆只需要一般的保护或在正常温度且干燥的环境中，选择潮湿桥架即可。

　　1. Cable type and quantity: Choose the appropriate cable tray form and type based on the type and quantity of cables. For example, if the cable needs to be shielded and anti-interference, a damp cable tray with partitions should be selected; If the cable only requires general protection or in a normal temperature and dry environment, a damp cable tray can be selected.

　　2、环境因素：在强腐蚀环境下，应选择热气型桥架和铝合金桥架。同时，还需要考虑户外安装时可能遇到的风载、雪载等因素。

　　2. Environmental factors: In highly corrosive environments, hot air type cable trays and aluminum alloy cable trays should be selected. At the same time, factors such as wind and snow loads that may be encountered during outdoor installation also need to be considered.

　　3、桥架规格和尺寸：根据电缆的数量和外径，计算桥架的填充率和工程发展余量。例如，一个140余平方厘米的电缆总面积，按照百分之五十到百分之七十的填充和百分之十到百分十五的工程发展流量，应选择一个200乘100的潮式桥架。

　　3. Bridge specifications and dimensions: Calculate the filling rate and engineering development margin of the bridge based on the number and outer diameter of the cables. For example, for a cable with a total area of over 140 square centimeters, a 200 by 100 tidal bridge should be selected based on 50% to 70% filling and 10% to 15% engineering development flow.

　　4、支撑和安装条件：考虑桥架的支撑和安装的载荷能力以及布置条件，如支撑距离和伸缩缝。如果桥架宽度大于三百毫米，非直线段需要再加一个支撑和一个吊架。

　　4. Support and installation conditions: Consider the load capacity and layout conditions of the bridge support and installation, such as support distance and expansion joints. If the width of the bridge is greater than 300 millimeters, an additional support and a hanger need to be added to the non-linear section.

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