在电力与通信设施的搭建中，桥架承担着规整、保护线缆的重任，堪称电气系统的 “生命线守护者”。然而，市场上桥架产品鱼龙混杂，劣质桥架不仅无法保障线缆，还可能带来一系列隐患。想要在选购时避开 “雷区”，就要练就一双 “火眼金睛”，识破劣质桥架的种种破绽。

　　In the construction of power and communication facilities, cable trays bear the responsibility of regulating and protecting cables, and can be regarded as the "lifeline guardians" of electrical systems. However, there is a mixed bag of bridge products in the market, and inferior bridge products not only fail to ensure cable safety, but may also bring a series of safety hazards. If you want to avoid the "minefield" when purchasing, you need to develop a pair of "sharp eyes" and see through the various flaws of inferior bridge frames.

　　外观细节藏玄机：观察桥架的外观是初步辨别的关键。桥架表面平整光滑，色泽均匀，无明显划痕、变形或锈迹。而劣质桥架往往在外观上就暴露出缺陷，其表面粗糙不平，可能存在大量毛刺，这些毛刺不仅容易划伤施工人员，还会磨损线缆的绝缘层，留下隐患；有些劣质桥架的色泽暗淡，局部还会出现锈斑，这意味着其材质防锈能力差，在潮湿或腐蚀性环境中，使用寿命会大打折扣；此外，劣质桥架的尺寸偏差较大，槽体宽窄不一，盖板与槽体无法紧密贴合，导致线缆保护效果不佳。

　　The hidden mystery lies in the appearance details: Observing the appearance of the bridge frame is the key to initial identification. High quality cable trays have a smooth and even surface, uniform color, and no obvious scratches, deformations, or rust stains. Poor quality cable trays often expose defects in appearance, with rough and uneven surfaces that may contain a large number of burrs. These burrs not only easily scratch construction workers, but also wear down the insulation layer of the cables, leaving safety hazards; Some inferior bridge frames have dull colors and rust spots in some areas, which means that their material has poor rust prevention ability. In humid or corrosive environments, their service life will be greatly reduced; In addition, the size deviation of inferior cable trays is large, and the width of the groove body varies. The cover plate cannot be tightly attached to the groove body, resulting in poor cable protection effect.

　　材质性能见真章：桥架的材质直接决定其承载能力和耐用性。用手敲击桥架表面，桥架会发出清脆且坚实的声音，这表明其材质密度高、质地均匀；而劣质桥架发出的声音沉闷、空洞，说明内部可能存在气泡、杂质，材质疏松。对于金属材质的桥架，还可以通过测量厚度来判断优劣。使用卡尺等工具测量桥架板材厚度，劣质桥架往往会在厚度上 “偷工减料”，达不到标准要求，承载线缆时容易出现变形、塌陷，甚断裂。此外，还可观察桥架的柔韧性，适度弯折桥架边角，桥架在弯折后能够恢复原状，不易出现裂纹，而劣质桥架一折就裂，说明其材质韧性差，无法承受安装和使用过程中的外力冲击。

　　The material performance can be found in the real chapter: the material of the bridge directly determines its load-bearing capacity and durability. By tapping the surface of the bridge with your hand, a high-quality bridge will produce a crisp and solid sound, indicating its high material density and uniform texture; The dull and hollow sound emitted by inferior bridge frames indicates the presence of bubbles, impurities, and loose materials inside. For metal bridge frames, the quality can also be judged by measuring the thickness. Using tools such as calipers to measure the thickness of bridge panels, inferior bridge panels often cut corners and fail to meet standard requirements in terms of thickness. When carrying cables, they are prone to deformation, collapse, and even breakage. In addition, the flexibility of the bridge frame can be observed, and the edges and corners of the bridge frame can be moderately bent. High quality bridge frames can be restored to their original state after bending and are not prone to cracking, while low-quality bridge frames crack when folded, indicating that their material toughness is poor and cannot withstand external impact during installation and use.

　　加工工艺露马脚：加工工艺的优劣也是辨别桥架质量的重要依据。查看桥架的焊接部位，桥架的焊缝均匀、饱满，无虚焊、漏焊现象，焊接点牢固，能够保证桥架的整体强度；劣质桥架的焊接工艺粗糙，焊缝高低不平，还可能存在气孔、砂眼，这些缺陷会严重削弱桥架的结构稳定性，在长期使用中容易发生断裂。再看桥架的表面处理工艺，桥架的表面涂层均匀、附着力强，经过防腐处理后，能有效抵御外界侵蚀；而劣质桥架的涂层薄厚不均，部分区域甚出现剥落，无法起到良好的防护作用，桥架很快就会被腐蚀损坏。

　　Processing technology exposed: The quality of processing technology is also an important basis for identifying the quality of cable trays. Check the welding parts of the bridge frame. The welding seams of high-quality bridge frames are uniform and full, without virtual welding or leakage. The welding points are firm and can ensure the overall strength of the bridge frame; The welding process of inferior bridge frames is rough, with uneven weld seams and the possibility of air and sand holes. These defects can seriously weaken the structural stability of the bridge frame and make it prone to fracture during long-term use. Looking at the surface treatment process of the bridge, high-quality bridge has a uniform coating and strong adhesion. After anti-corrosion treatment, it can effectively resist external erosion; The coating thickness of poor quality bridge frames is uneven, and some areas may even peel off, which cannot provide good protection. The bridge frames will soon be corroded and damaged.

　　承重测试揭本质：在条件允许的情况下，对桥架进行简单的承重测试。按照桥架的设计承载要求，放置适量的重物在桥架上，观察桥架的变形情况。桥架在承受额定重量时，基本不会出现明显变形，能够稳定支撑；而劣质桥架在承重后，会迅速出现弯曲、下沉，甚直接断裂，这清楚地暴露出其无法满足实际使用需求的本质。

　　Load bearing test reveals the essence: If conditions permit, conduct a simple load bearing test on the bridge frame. According to the design load-bearing requirements of the bridge, place an appropriate amount of heavy objects on the bridge and observe the deformation of the bridge. High quality cable trays will not show significant deformation when bearing rated weight and can provide stable support; However, inferior bridge frames will quickly bend, sink, or even break after bearing weight, which clearly exposes their inability to meet practical usage needs.

　　面对市场上形形色色的桥架产品，只要牢记从外观、材质、工艺、承重等方面进行辨别，就能在这场桥架 “真假大对决” 中胜出，挑选到可靠的桥架，为电气系统的稳定运行筑牢根基。

　　Faced with a variety of bridge products on the market, as long as you remember to distinguish them from appearance, material, craftsmanship, load-bearing and other aspects, you can win in this "true and false battle" of bridge structures, select safe and reliable high-quality bridge structures, and lay a solid foundation for the stable operation of electrical systems.

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