電纜橋架是支撐和保護電纜的結構化裝置，由支架、托臂及安裝附件組成，能有序歸集電纜，廣泛應用于建筑、工業設施、交通樞紐等的電氣布線系統。其結構形式多樣，有槽式、托盤式、梯級式等，可依電纜類型（電力、控制、通信電纜）和使用環境（室內、室外、腐蝕性場所）選擇，為電纜提供安全穩定的敷設通道。

　　Cable tray is a structured device that supports and protects cables, consisting of brackets, support arms, and installation accessories. It can orderly collect cables and is widely used in electrical wiring systems such as buildings, industrial facilities, and transportation hubs. Its structural forms are diverse, including trough type, tray type, cascade type, etc., which can be selected according to cable types (power, control, communication cables) and usage environments (indoor, outdoor, corrosive places), providing a safe and stable laying channel for cables.

　　從定義看，其核心是 “支撐與歸集”。不同于傳統穿管敷設，電纜橋架采用開放式或半開放式結構，支架通過膨脹螺栓固定在墻體、天花板或地面，托臂連接支架形成連續承載面，電纜可直接鋪設其上，通過蓋板（槽式）或網格（梯級式）防護。這種設計靈活性強，可水平、垂直或轉彎敷設，轉彎處用彎通、三通等附件連接，避免電纜因過度彎曲受損。橋架尺寸（寬度 100-800mm）可依電纜數量和直徑選擇，滿足不同布線規模需求。

　　From a definition perspective, its core is "support and aggregation". Unlike traditional conduit laying, cable trays adopt an open or semi open structure, with brackets fixed to walls, ceilings, or floors through expansion bolts, and support arms connected to brackets to form a continuous load-bearing surface. Cables can be directly laid on them and protected by cover plates (trough type) or grids (ladder type). This design has strong flexibility and can be laid horizontally, vertically, or in turns. The bends are connected with accessories such as bends and tees to avoid damage to the cables due to excessive bending. The size of the cable tray (width 100-800mm) can be selected according to the number and diameter of cables to meet the requirements of different wiring scales.

　　電纜橋架的作用首先是保護電纜。它能隔離電纜與外界環境，避免其受灰塵、水汽侵蝕，在潮濕地下車庫、多塵車間等環境中，可延長電纜壽命 3-5 年。在走廊、設備通道等易受機械損傷的場所，能阻擋重物墜落、外力碰撞，減少短路、漏電事故。部分橋架采用防火材料或阻燃材料制成，火災時可延緩火勢蔓延，符合消防安全規范。

　　The primary function of cable trays is to protect cables. It can isolate cables from the external environment, preventing them from being corroded by dust and water vapor. In damp underground garages, dusty workshops, and other environments, it can extend the lifespan of cables by 3-5 years. In places prone to mechanical damage such as corridors and equipment passages, it can prevent heavy objects from falling and external collisions, reducing short circuits and electrical leakage accidents. Some cable trays are made of fire-resistant or flame-retardant materials, which can delay the spread of fire in case of fire and comply with fire safety regulations.

　　其次是實現電纜有序管理。大型建筑或工業設施中，橋架通過分層敷設（如多層托盤式）將不同類型電纜分開，電力與控制電纜分設不同層，高低壓電纜保持不小于 300mm 的安全間距，避免信號干擾和安全隱患。橋架上可標注電纜編號和用途，方便檢修時快速定位，縮短排查時間，還能減少電纜間摩擦，降低絕緣層磨損風險。

　　Secondly, to achieve orderly management of cables. In large buildings or industrial facilities, cable trays are laid in layers (such as multi-layer trays) to separate different types of cables. Power and control cables are placed in different layers, and high and low voltage cables are kept at a safe distance of not less than 300mm to avoid signal interference and safety hazards. The cable number and purpose can be marked on the cable tray, which facilitates quick positioning during maintenance, shortens inspection time, reduces friction between cables, and lowers the risk of insulation layer wear.

　　此外，它能適應不同環境的敷設需求。室外可選用熱浸鋅鋼制、鋁合金等防雨防腐蝕橋架，抵抗紫外線和雨水侵蝕。化工車間、加油站等有防爆要求的場所，需用防爆型橋架，連接部位牢固密封，防止火花引發爆炸。數據中心、實驗室等需頻繁增減電纜的場所，可拆卸蓋板設計便于操作，無需破壞原有布線，降低改造難度和成本。

　　In addition, it can adapt to the installation requirements of different environments. Outdoor cable trays made of hot-dip galvanized steel, aluminum alloy, and other rainproof and corrosion-resistant materials can be used to resist UV rays and rainwater erosion. Chemical workshops, gas stations, and other places with explosion-proof requirements require explosion-proof cable trays with securely sealed connection points to prevent sparks from causing explosions. In places such as data centers and laboratories where cables need to be frequently added or removed, the detachable cover plate design is easy to operate without damaging the original wiring, reducing the difficulty and cost of renovation.

　　總之，電纜橋架是電氣布線系統的關鍵部分，通過結構化支撐與防護，保障電纜安全運行，實現布線有序管理，其多樣的結構和適配能力，使其成為現代建筑與工業設施中不可或缺的電氣輔助裝置。

　　In short, cable trays are a critical part of electrical wiring systems. Through structured support and protection, they ensure the safe operation of cables and achieve orderly management of wiring. Their diverse structures and adaptability make them indispensable electrical auxiliary devices in modern buildings and industrial facilities.

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