1、電纜橋架

1. Cable tray

電纜橋架彎通主要分為三種類型：水平彎通、垂直彎通、改向彎通。水平彎通包括：水平90度彎通、水平135度彎通、水平三通、水平四通、水平等差彎、變徑接頭、喇叭口等。電纜橋架的標(biāo)準(zhǔn)長度按照規(guī)范可以分為2m、3m、4m和6m。托盤結(jié)構(gòu)電纜橋架的標(biāo)準(zhǔn)長度一般為2m一節(jié)。網(wǎng)格結(jié)構(gòu)電纜橋架的標(biāo)準(zhǔn)長度一般為3m一節(jié)。

Cable tray bends are mainly divided into three types: horizontal bends, vertical bends, and directional bends. Horizontal bends include: horizontal 90 degree bend, horizontal 135 degree bend, horizontal tee, horizontal four-way, horizontal equal difference bend, variable diameter joint, horn mouth, etc. The standard length of cable trays can be divided into 2m, 3m, 4m, and 6m according to specifications. The standard length of tray structure cable trays is generally 2m per section. The standard length of grid structured cable trays is generally 3m per section.

電纜橋架

Cable tray

2、鋁合金橋架

2. Aluminum alloy bridge frame

鋁合金電纜橋架的表面陽極氧化處理，小平均膜厚應(yīng)該為10um，小局部膜厚應(yīng)該為8um。鋁合金電纜橋架表面噴涂化工防腐粉末的厚度應(yīng)該大于等于80um。鋁合金電纜橋架柔韌性參照《漆膜柔韌性測定法》GB/T1731標(biāo)準(zhǔn)，鋁合金電纜橋架沖擊強(qiáng)度按照《漆膜耐沖擊測定法》GB/T1732標(biāo)準(zhǔn)。

The surface anodizing treatment of aluminum alloy cable trays should have a minimum average film thickness of 10um and a minimum local film thickness of 8um. The thickness of chemical anti-corrosion powder sprayed on the surface of aluminum alloy cable trays should be greater than or equal to 80um. The flexibility of aluminum alloy cable trays should refer to the GB/T1731 standard for the determination of paint film flexibility, and the impact strength of aluminum alloy cable trays should follow the GB/T1732 standard for the determination of paint film impact resistance.

鋁合金橋架

Aluminum alloy bridge frame

3、橋架標(biāo)準(zhǔn)

3. Bridge standard

2017標(biāo)準(zhǔn)中，電纜橋架寬度為300mm、350mm、400mm、450mm時(shí)，橋架的彎曲半徑應(yīng)該為150mm。2000標(biāo)準(zhǔn)中托盤式橋架結(jié)構(gòu)特征的名稱為有孔托盤，代號為P。2000橋架標(biāo)準(zhǔn)中梯式橋架結(jié)構(gòu)特征的名稱為梯架，代號為T。

In the 2017 national standard, when the width of the cable tray is 300mm, 350mm, 400mm, and 450mm, the bending radius of the tray should be 150mm. The structural feature of the tray type tray in the 2000 national standard is called perforated tray, with the code P. The structural feature of the ladder type tray in the 2000 national tray standard is called ladder frame, with the code T.

橋架標(biāo)準(zhǔn)

Bridge standard

4、橋架規(guī)格

4. Bridge specifications

電纜橋架提料名稱規(guī)則通常是：材質(zhì)+型式+規(guī)格，如：防火槽式水平彎通200*100、噴塑槽式水平三通100*50、不銹鋼梯式水平四通300*100等。電纜橋架編寫立柱提料清單時(shí)應(yīng)填寫：名稱+型號+立柱長度+分類。如“熱浸鋅槽鋼立柱，規(guī)格JY-H103-1000 (I型）”，“熱浸鋅角鋼立柱，規(guī)格JY-H104-800 (II型）”。

The naming rules for cable trays are usually: material+type+specification, such as: fireproof groove horizontal bend 200 * 100, spray painted groove horizontal tee 100 * 50, stainless steel ladder horizontal tee 300 * 100, etc. When writing the column material list for cable trays, the following information should be filled in: name+model+column length+classification. Such as "Hot dip galvanized channel steel column, specification JY-H103-1000 (Type I)" and "Hot dip galvanized angle steel column, specification JY-H104-800 (Type II)".

5、橋架高度

5. Bridge height

地面2.2m以上高度才適合敷設(shè)電纜橋架，0.3m是橋架頂部距頂棚或其它障礙物的小距離。50%是橋架內(nèi)電纜橫截面積與橋架橫截面積的小比例。電纜橋架的重量決定因素包括橋架的寬度、高度、厚度和密度，寬度越寬重量越大，例如200*50mm比100*50的橋架要重，高度越高重量越沉，例如100*100mm比100*50mm的橋架要沉，厚度越厚重量越大，例如200*100*1.2mm比200*100*1.0mm的橋架重量大，鋼制橋架比鋁合金橋架就重。

A height of at least 2.2m above the ground is suitable for laying cable trays, and 0.3m is the minimum distance from the top of the tray to the ceiling or other obstacles. 50% is the minimum ratio of the cross-sectional area of the cable inside the cable tray to the cross-sectional area of the cable tray. The determining factors for the weight of cable trays include the width, height, thickness, and density of the tray. The wider the width, the heavier the weight. For example, 200 * 50mm trays are heavier than 100 * 50 trays, and the higher the height, the heavier the weight. For example, 100 * 100mm trays are heavier than 100 * 50mm trays, and the thicker the thickness, the heavier the weight. For example, 200 * 100 * 1.2mm trays are heavier than 200 * 100 * 1.0mm trays, and steel trays are heavier than aluminum alloy trays.

6、橋架載荷

6. Bridge load

電纜橋架水平安裝時(shí)要注意避讓周圍的建筑物，要避免受到周圍氣體液體腐蝕以及固體的物理傷害，也要保證載荷足夠避免出現(xiàn)相關(guān)事故，在橋架標(biāo)準(zhǔn)中也有這方面的要求和規(guī)范。對于跨距大于標(biāo)準(zhǔn)長度或考慮戶外風(fēng)雪作用的高負(fù)載的電纜橋架，需要采用增強(qiáng)型側(cè)板或者增強(qiáng)橋架的高度，或者采用瓦楞型電纜橋架，來保證其載荷。

When installing cable trays horizontally, attention should be paid to avoiding surrounding buildings, avoiding corrosion from surrounding gases and liquids, as well as physical damage from solids. It is also necessary to ensure that the safe load is sufficient to avoid related accidents. This is also required and regulated in the tray standards. For cable trays with spans greater than the standard length or high loads considering outdoor wind and snow effects, reinforced side panels or the height of reinforced trays, or corrugated cable trays, need to be used to ensure their safe load capacity.

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