01 电缆桥架简介电缆桥架作为布线工程的一个配套项目，目前尚无专门的规范指导，每个生产厂家的规格程式缺乏通用性，因此，设计选型过程应根据弱电各个系统缆线的类型、数量，合理选定适用的桥架。可以独立架设,也可以敷设在各种建(构)筑物和管廊支架上，体现结构简单、造型美观、配置灵活和维修方便等特点，全部零件均需进行镀锌处理，安装在建筑物外露天的桥架，如果是在邻近海边或属于腐蚀区，则材质必须具有防腐、耐潮气、附着力好，耐冲击强度高的物性特点。电缆桥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撑电缆的刚性结构系统之全称。工具/原料：是设计选型、保障的权威技术参考；电缆原材料、电缆附件、电缆设备、电缆桥架、电缆盘具、施工工具、线缆连接器等。

　　01 Introduction to Cable Tray Cable tray As a supporting project of wiring engineering, there is currently no specialized specification guidance, and the specifications and programs of each manufacturer lack universality. Therefore, the design and selection process should reasonably select suitable cable trays based on the types and quantities of cables in various weak current systems. It can be independently erected or laid on various buildings and pipe gallery supports, reflecting the characteristics of simple structure, beautiful appearance, flexible configuration, and easy maintenance. All parts need to be galvanized and installed on the bridge outside the building. If it is near the seaside or in a corrosive area, the material must have physical properties such as anti-corrosion, moisture resistance, good adhesion, and high impact strength. 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. Tools/raw materials: authoritative technical references for design selection and transaction assurance; Cable raw materials, cable accessories, cable equipment, cable trays, cable reels, construction tools, cable connectors, etc.

　　02 电缆桥架的分类电缆桥架是一款为保护电缆而衍生的产品，是电缆的保护壳，防止电缆受到外界因素的损坏。主要由支架、托臂和安装附件组成，桥架主要类型可以分为梯式桥架、无孔托盘式桥架（槽式桥架）、有孔托盘式桥架（托盘式电缆桥架）、大跨距电缆桥架等。▲ 槽式电缆桥架槽式电缆桥架是一种全封闭型的电缆桥架。用整张钢板弯制而成的槽式部件，其概念上与盘架的区别是高、宽比不同，盘架浅而宽，槽式电缆桥架具有一定的深度和封闭性。▲ 托盘式电缆桥架托盘式桥架是半密封型，跟镀锌槽式桥架的样子非常相似。托盘式电缆桥架其表面处理可根据用户需要分为镀锌、静电喷塑和热镀锌三种，在重腐蚀环境中可作特殊防腐处理 。▲ 梯式电缆桥架梯式电缆桥架外型像梯子形状，中间焊有横杆加固支撑使得重量轻、成本低、承受能力极强、透气性好；CQ1-T型梯级式电缆桥架根据国内外有关资料改进设计的。▲ 大跨距电缆桥架大跨距电缆桥架一般是由拉挤玻璃钢型材组装而成，适用于电力电缆、控制电缆、照明电缆及配件等。

　　02 Classification of Cable Tray Cable tray is a product derived from protecting cables, which is a protective shell for cables to prevent damage from external factors. It mainly consists of brackets, support arms, and installation accessories. The main types of cable trays can be divided into ladder type cable trays, non perforated tray type cable trays (trough type cable trays), perforated tray type cable trays (tray type cable trays), large-span cable trays, etc. ▲ Trough type cable tray Trough type cable tray is a fully enclosed cable tray. The difference between a trough type component made by bending a whole steel plate and a tray is the height to width ratio. The tray is shallow and wide, while the trough type cable tray has a certain depth and enclosure. The tray type cable tray is a semi sealed type, which looks very similar to the galvanized trough type cable tray. The surface treatment of tray type cable trays can be divided into three types according to user needs: galvanizing, electrostatic spraying, and hot-dip galvanizing. Special anti-corrosion treatment can be carried out in heavily corrosive environments. ▲ Ladder type cable tray The ladder type cable tray is shaped like a ladder, with a horizontal bar welded in the middle to reinforce and support it, making it lightweight, low-cost, highly load-bearing, and breathable; The CQ1-T stepped cable tray has been improved and designed based on relevant domestic and foreign data. ▲ Large span cable trays are generally assembled from extruded fiberglass profiles and are suitable for power cables, control cables, lighting cables, and accessories.

　　03 电缆桥架的材质分类电缆桥架按材质可分类：镀锌桥架、不锈钢桥架、铝合金桥架、防火桥架、喷塑桥架、热镀锌桥架。

　　03 Material classification of cable trays Cable trays can be classified by material: galvanized tray, stainless steel tray, aluminum alloy tray, fireproof tray, spray painted tray, hot-dip galvanized tray.

　　04喷塑电缆桥架的作用为什么有的电缆桥架要喷涂，喷塑，作用是什么呢？喷塑电缆桥架是经过表面处理一层涂层漆，热镀锌电缆桥架（热浸锌）、普通喷塑电缆桥架、防火电缆桥架，这三类电缆桥架都是需要经过表面处理的，用普通镀锌电缆桥架表面处理过的电缆桥架作用是加强电缆桥架本身的性能。喷塑电缆桥架：喷塑电缆桥架是用静电粉末喷涂设备把粉末涂料喷涂到桥架的表面，加强了电缆桥架本身的防水、防锈、防静电，增强荷载能力。热镀锌电缆桥架：热镀锌电缆桥架也称为“热浸锌电缆桥架”经过高温热镀锌池，浸泡而成，热镀锌电缆桥架主要能起到防腐作用，它的防腐性能比普通镀锌长达20倍，对热镀锌钢的要求越来越严，很多重大项目都采用热镀锌，耐腐蚀性高，减少维护成本。防火电缆桥架：防火电缆桥架采用钢制镀锌电缆桥架外壳加工防火烤漆，内外喷上防火涂漆，起着隔热，断燃，防火性能，隔热层平均厚度为25mm，防火电缆桥架遇火时涂料膨胀，防止火灾持续燃烧。冷镀锌跟热镀锌不同的就是它们所使用的技术是不一样的。冷镀锌是在角钢、槽钢等金属的表面镀上锌层，用来达到便民的美观和金属的防锈。热镀锌加工厂是用的锌锡溶液对工件进行的防腐，这种新型的技术可以延长防腐的时间五倍之多，通常使用这种技术的都是室外建设。通常的冷镀锌，其镀锌层厚度5～15μm，而热镀锌层一般在35μm以上，这是因为热镀锌是将除锈后的钢件浸入500℃左右融化的锌液中，使钢构件表面附着锌层，从而起到防腐的目的。所以，热镀锌比冷镀锌根本没得比，热镀锌的寿命防腐蚀性比冷镀锌强太多。

　　Why do some cable trays need to be sprayed with plastic? What is the purpose of spraying plastic on cable trays? Spray painted cable trays are coated with a layer of paint after surface treatment, including hot-dip galvanized cable trays, ordinary spray painted cable trays, and fire-resistant cable trays. All three types of cable trays require surface treatment, and the purpose of using ordinary galvanized cable trays for surface treatment is to enhance the performance of the cable trays themselves. Spray painted cable tray: Spray painted cable tray uses electrostatic powder spraying equipment to spray powder coating onto the surface of the tray, strengthening the waterproof, rust proof, and anti-static properties of the cable tray itself, and enhancing its load capacity. Hot dip galvanized cable tray: Hot dip galvanized cable tray, also known as "hot-dip galvanized cable tray", is soaked in a high-temperature hot-dip galvanizing tank. The main function of hot-dip galvanized cable tray is to prevent corrosion. Its anti-corrosion performance is 20 times longer than ordinary galvanizing. The country's requirements for hot-dip galvanized steel are becoming increasingly strict, and many major projects use hot-dip galvanizing, which has high corrosion resistance and reduces maintenance costs. Fireproof cable tray: The fireproof cable tray is made of steel galvanized cable tray shell processed with fireproof paint, and sprayed with fireproof paint on the inside and outside, which plays a role in insulation, flame retardancy, and fire resistance. The average thickness of the insulation layer is 25mm. When the fireproof cable tray encounters fire, the coating expands to prevent continuous fire. The difference between cold galvanizing and hot-dip galvanizing is that they use different techniques. Cold galvanizing is the process of coating the surface of metals such as angle steel and channel steel with a zinc layer, in order to achieve a convenient and aesthetically pleasing appearance as well as rust prevention for the metal. Hot dip galvanizing processing plants use zinc tin solution to prevent corrosion of workpieces. This new technology can extend the anti-corrosion time by up to five times, and it is usually used in outdoor construction. The usual cold galvanizing process has a galvanized layer thickness of 5-15 μ m, while the hot-dip galvanizing layer is generally above 35 μ m. This is because hot-dip galvanizing involves immersing the rust removed steel components in a molten zinc solution at around 500 ℃ to attach a zinc layer to the surface of the steel components, thus achieving the purpose of corrosion prevention. So, hot-dip galvanizing is incomparable to cold galvanizing, as its lifespan and corrosion resistance are much stronger than cold galvanizing.

　　热镀锌桥架比镀锌桥架的寿命要长，无论是硬度还是耐冲击，热镀锌是占优势的。那么，如何区分热镀锌桥架和镀锌桥架呢？色泽上，热镀锌桥架外表亮白，镀锌桥架外表光泽暗一点；平坦度上，热镀锌桥架因为镀锌层厚于一般的镀锌桥架，外表手感较粗糙，镀锌桥架外表较平坦。生产工艺上不同，热镀锌桥架是在锌锅溶液中经过，镀锌桥架是经过电极反响得到。镀锌桥架的工艺进程：将钢材外表清洗处理后放进电镀液中，电镀液含氧化锌。直流电一级接钢材，一级接放在电镀液中的锌板。通电后锌以分子状态置换到钢材外表。假如加亮光剂纯化，则表现彩云状亮光镀锌。热镀锌桥架的工艺进程：将钢件或铸件浸入熔融的锌液中，其外表构成锌---铁合金或镀和锌---铁合金覆盖层的工艺进程和办法。热镀锌镀层较厚，抗腐蚀才能较强。冷镀锌镀锌层较热镀亮光，但较薄，抗腐蚀才能较弱。应用在钢结构上的冷镀锌一般防锈作用不是很好，主要是镀锌量达不到，并且镀锌不均匀，一般两三年就呈现生锈现象，质量差的暴露在湿润环境中十几天就生锈了。所以冷镀锌桥架适用在干燥室内。而热镀锌桥架是经过表面镀锌来完成的，这种表面处理的耐腐蚀能力非常的强，所以经常被应用在海边等潮湿地区。

　　Hot dip galvanized cable trays have a longer lifespan than galvanized cable trays, and hot-dip galvanizing has an absolute advantage in terms of hardness and impact resistance. So, how to distinguish between hot-dip galvanized cable trays and galvanized cable trays? In terms of color, the hot-dip galvanized bridge has a bright white exterior, while the galvanized bridge has a slightly dull luster; In terms of flatness, hot-dip galvanized cable trays have a thicker galvanized layer than ordinary galvanized cable trays, resulting in a rougher surface feel. Galvanized cable trays have a flatter surface. The production process is different. Hot dip galvanized cable trays are processed in a zinc pot solution, while galvanized cable trays are obtained through electrode reaction. The process of galvanized cable tray: After cleaning the surface of the steel, it is placed in an electroplating solution containing zinc oxide. The first level of direct current is connected to steel, and the first level is connected to zinc plate placed in electroplating solution. After being electrified, zinc is replaced on the surface of the steel in a molecular state. If purified with a brightening agent, it will exhibit a cloud like glossy zinc plating. The process of hot-dip galvanizing cable tray: The process and method of immersing steel parts or castings into molten zinc solution to form a zinc iron alloy or zinc iron alloy coating on the surface. The hot-dip galvanized coating is thicker and has stronger corrosion resistance. Cold dip galvanizing has a brighter finish than hot-dip galvanizing, but it is thinner and has weaker corrosion resistance. The anti rust effect of cold galvanizing applied to steel structures is generally not very good, mainly due to the insufficient amount of galvanizing and uneven galvanizing. Generally, rusting occurs within two to three years, and poor quality products will rust after being exposed to a humid environment for more than ten days. So cold galvanized cable trays are suitable for use in dry rooms. And hot-dip galvanized cable trays are completed by surface galvanizing, which has strong corrosion resistance and is often used in humid areas such as the seaside.

　　本文由 山东电缆桥架  友情奉献.更多有关的知识请点击  http://www.sdhangfeng.com   真诚的态度.为您提供为的服务.更多有关的知识我们将会陆续向大家奉献.敬请期待.

　　This article is a friendly contribution from Shandong Cable Tray. For more related knowledge, please click http://www.sdhangfeng.com Sincere attitude. We provide you with comprehensive services. We will gradually contribute more relevant knowledge to everyone. Please stay tuned