01 電纜橋架簡介電纜橋架作為布線工程的一個配套項目，目前尚無專門的規(guī)范指導，每個生產(chǎn)廠家的規(guī)格程式缺乏通用性，因此，設計選型過程應根據(jù)弱電各個系統(tǒng)纜線的類型、數(shù)量，合理選定適用的橋架?？梢元毩⒓茉O,也可以敷設在各種建(構)筑物和管廊支架上，體現(xiàn)結構簡單、造型美觀、配置靈活和維修方便等特點，全部零件均需進行鍍鋅處理，安裝在建筑物外露天的橋架，如果是在鄰近海邊或屬于腐蝕區(qū)，則材質必須具有防腐、耐潮氣、附著力好，耐沖擊強度高的物性特點。電纜橋架是由托盤或梯架的直線段、彎通、組件以及托臂（臂式支架）、吊架等構成具有密接支撐電纜的剛性結構系統(tǒng)之全稱。工具/原料：是設計選型、保障的權威技術參考；電纜原材料、電纜附件、電纜設備、電纜橋架、電纜盤具、施工工具、線纜連接器等。

　　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 電纜橋架的分類電纜橋架是一款為保護電纜而衍生的產(chǎn)品，是電纜的保護殼，防止電纜受到外界因素的損壞。主要由支架、托臂和安裝附件組成，橋架主要類型可以分為梯式橋架、無孔托盤式橋架（槽式橋架）、有孔托盤式橋架（托盤式電纜橋架）、大跨距電纜橋架等?！?槽式電纜橋架槽式電纜橋架是一種全封閉型的電纜橋架。用整張鋼板彎制而成的槽式部件，其概念上與盤架的區(qū)別是高、寬比不同，盤架淺而寬，槽式電纜橋架具有一定的深度和封閉性。▲ 托盤式電纜橋架托盤式橋架是半密封型，跟鍍鋅槽式橋架的樣子非常相似。托盤式電纜橋架其表面處理可根據(jù)用戶需要分為鍍鋅、靜電噴塑和熱鍍鋅三種，在重腐蝕環(huán)境中可作特殊防腐處理 ?！?梯式電纜橋架梯式電纜橋架外型像梯子形狀，中間焊有橫桿加固支撐使得重量輕、成本低、承受能力極強、透氣性好；CQ1-T型梯級式電纜橋架根據(jù)國內外有關資料改進設計的?！?大跨距電纜橋架大跨距電纜橋架一般是由拉擠玻璃鋼型材組裝而成，適用于電力電纜、控制電纜、照明電纜及配件等。

　　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 電纜橋架的材質分類電纜橋架按材質可分類：鍍鋅橋架、不銹鋼橋架、鋁合金橋架、防火橋架、噴塑橋架、熱鍍鋅橋架。

　　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噴塑電纜橋架的作用為什么有的電纜橋架要噴涂，噴塑，作用是什么呢？噴塑電纜橋架是經(jīng)過表面處理一層涂層漆，熱鍍鋅電纜橋架（熱浸鋅）、普通噴塑電纜橋架、防火電纜橋架，這三類電纜橋架都是需要經(jīng)過表面處理的，用普通鍍鋅電纜橋架表面處理過的電纜橋架作用是加強電纜橋架本身的性能。噴塑電纜橋架：噴塑電纜橋架是用靜電粉末噴涂設備把粉末涂料噴涂到橋架的表面，加強了電纜橋架本身的防水、防銹、防靜電，增強荷載能力。熱鍍鋅電纜橋架：熱鍍鋅電纜橋架也稱為“熱浸鋅電纜橋架”經(jīng)過高溫熱鍍鋅池，浸泡而成，熱鍍鋅電纜橋架主要能起到防腐作用，它的防腐性能比普通鍍鋅長達20倍，對熱鍍鋅鋼的要求越來越嚴，很多重大項目都采用熱鍍鋅，耐腐蝕性高，減少維護成本。防火電纜橋架：防火電纜橋架采用鋼制鍍鋅電纜橋架外殼加工防火烤漆，內外噴上防火涂漆，起著隔熱，斷燃，防火性能，隔熱層平均厚度為25mm，防火電纜橋架遇火時涂料膨脹，防止火災持續(xù)燃燒。冷鍍鋅跟熱鍍鋅不同的就是它們所使用的技術是不一樣的。冷鍍鋅是在角鋼、槽鋼等金屬的表面鍍上鋅層，用來達到便民的美觀和金屬的防銹。熱鍍鋅加工廠是用的鋅錫溶液對工件進行的防腐，這種新型的技術可以延長防腐的時間五倍之多，通常使用這種技術的都是室外建設。通常的冷鍍鋅，其鍍鋅層厚度5～15μm，而熱鍍鋅層一般在35μm以上，這是因為熱鍍鋅是將除銹后的鋼件浸入500℃左右融化的鋅液中，使鋼構件表面附著鋅層，從而起到防腐的目的。所以，熱鍍鋅比冷鍍鋅根本沒得比，熱鍍鋅的壽命防腐蝕性比冷鍍鋅強太多。

　　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.

　　熱鍍鋅橋架比鍍鋅橋架的壽命要長，無論是硬度還是耐沖擊，熱鍍鋅是占優(yōu)勢的。那么，如何區(qū)分熱鍍鋅橋架和鍍鋅橋架呢？色澤上，熱鍍鋅橋架外表亮白，鍍鋅橋架外表光澤暗一點；平坦度上，熱鍍鋅橋架因為鍍鋅層厚于一般的鍍鋅橋架，外表手感較粗糙，鍍鋅橋架外表較平坦。生產(chǎn)工藝上不同，熱鍍鋅橋架是在鋅鍋溶液中經(jīng)過，鍍鋅橋架是經(jīng)過電極反響得到。鍍鋅橋架的工藝進程：將鋼材外表清洗處理后放進電鍍液中，電鍍液含氧化鋅。直流電一級接鋼材，一級接放在電鍍液中的鋅板。通電后鋅以分子狀態(tài)置換到鋼材外表。假如加亮光劑純化，則表現(xiàn)彩云狀亮光鍍鋅。熱鍍鋅橋架的工藝進程：將鋼件或鑄件浸入熔融的鋅液中，其外表構成鋅---鐵合金或鍍和鋅---鐵合金覆蓋層的工藝進程和辦法。熱鍍鋅鍍層較厚，抗腐蝕才能較強。冷鍍鋅鍍鋅層較熱鍍亮光，但較薄，抗腐蝕才能較弱。應用在鋼結構上的冷鍍鋅一般防銹作用不是很好，主要是鍍鋅量達不到，并且鍍鋅不均勻，一般兩三年就呈現(xiàn)生銹現(xiàn)象，質量差的暴露在濕潤環(huán)境中十幾天就生銹了。所以冷鍍鋅橋架適用在干燥室內。而熱鍍鋅橋架是經(jīng)過表面鍍鋅來完成的，這種表面處理的耐腐蝕能力非常的強，所以經(jīng)常被應用在海邊等潮濕地區(qū)。

　　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.

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