弱電工程中常用的電纜橋架包括：槽式橋架、托盤式橋架、鋁合金橋架和網(wǎng)格式橋架。

　　The commonly used cable trays in weak current engineering include trough trays, tray trays, aluminum alloy trays, and mesh trays.

　　一、槽式橋架和托盤式橋架的區(qū)別

　　1、 The difference between trough bridge and tray bridge

　　槽式電纜橋架與托盤式電纜橋架是都可以敷設(shè)電力電纜；斷面、結(jié)構(gòu)形式不同而已。封閉的槽盒、無蓋的托盤還有梯架都屬于電纜橋架，三種橋架的結(jié)構(gòu)形式不同，一些性能也有差異，比如防護性以槽式、梯架差，但通風(fēng)冷卻性卻相反。槽式電纜橋架的優(yōu)勢在于屏蔽和防腐，主要適用于鋪設(shè)截面小但是數(shù)量卻非常多的電線電纜；而托盤式纜橋架優(yōu)勢在于載荷大和散熱好，主要就是用于鋪設(shè)截面大但是數(shù)量比較小的電力電纜。從外形來看，槽式電纜橋架是一種全封閉型電纜橋架。托盤橋架一般指的是有孔的槽式橋架。由于開了散熱孔，托盤式橋架板材的厚度要更厚些。

　　Both trough cable trays and tray cable trays can be used to lay power cables; It's just different in cross-section and structural form. Enclosed trough boxes, uncovered trays, and ladder frames all belong to cable trays. The structural forms of the three types of trays are different, and some performance differences exist. For example, trough type trays have the best protection and ladder frame have the worst, but their ventilation and cooling properties are the opposite. The advantage of trough cable tray lies in shielding and anti-corrosion, mainly suitable for laying wires and cables with small cross-sections but a large quantity; The advantage of tray type cable trays lies in their high load capacity and good heat dissipation, mainly used for laying power cables with large cross-sections but relatively small quantities. From the appearance, the trough cable tray is a fully enclosed cable tray. Tray trays generally refer to perforated trough trays. Due to the opening of heat dissipation holes, the thickness of the tray type bridge board needs to be thicker.

　　槽式橋架托盤式橋架

　　Trough type bridge tray type bridge

　　1、槽式電纜橋架主要特點是屏蔽干擾，抗腐蝕，防火，對控制電纜屏蔽干擾和重腐蝕環(huán)境中電纜的防護都有較好效果，對控制電纜屏蔽干擾和重腐蝕環(huán)境中電纜的防護都有較好效果。適用于敷設(shè)計算機電纜、通信電纜、熱電偶電纜及高靈敏系統(tǒng)的控制電纜等。用于敷設(shè)截面小但數(shù)量多的電線電纜。這也是弱電工程中經(jīng)濟實用的一種橋架。

　　1. The main characteristics of trough cable trays are shielding interference, corrosion resistance, and fire prevention. They have good effects on controlling cable shielding interference and protecting cables in heavily corrosive environments. They also have good effects on controlling cable shielding interference and protecting cables in heavily corrosive environments. Suitable for laying computer cables, communication cables, thermocouple cables, and control cables for high-sensitivity systems. Used for laying wires and cables with small cross-sections but large quantities. This is also the most economical and practical type of cable tray in weak current engineering.

　　2、托盤式橋架其表面處理可根據(jù)用戶需要可分為鍍鋅、靜電噴塑和熱鍍鋅三種，防火和抗腐蝕性能要相對差一些，在重腐蝕環(huán)境中必須作特殊的防腐處理。托盤橋架底部有很多腰形孔，以利于散熱，重量輕、載荷大，主要用于敷設(shè)截面大數(shù)量較少的電力電纜。

　　2. The surface treatment of tray type bridge can be divided into three types according to user needs: galvanizing, electrostatic spraying, and hot-dip galvanizing. The fire resistance and corrosion resistance are relatively poor, and special anti-corrosion treatment must be carried out in heavily corrosive environments. There are many waist shaped holes at the bottom of the tray bridge to facilitate heat dissipation. It is lightweight and has a large load capacity, mainly used for laying power cables with large cross-sections and few quantities.

　　二、鍍鋅橋架和熱鍍鋅橋架

　　2、 Galvanized bridge and hot-dip galvanized bridge

　　很多人以為鍍鋅橋架就是熱鍍鋅橋架，其實是錯誤的，鍍鋅橋架不等于熱鍍鋅橋架。熱鍍鋅橋架又可分為“熱浸鋅”和“熱鍍鋅”兩種，鍍鋅就是“冷鍍鋅”或“電鍍鋅”。鍍鋅橋架是用“冷鍍鋅板”制造而成，而熱鍍鋅橋架是用冷鍍鋅橋架經(jīng)過表面處理浸鋅一層熱鍍鋅制造而成，制造工藝不同。冷鍍鋅橋架的冷鍍鋅鋅層較熱鍍光亮，但較薄，抗銹蝕能力較弱。熱鍍鋅橋架熱鍍鋅鍍層較厚，抗侵蝕能力較強。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。當然熱鍍鋅橋架的成本較高。通常在工程應(yīng)用的鍍鋅電纜橋架，其實就是冷鍍鋅橋架，因為熱鍍鋅橋架制作成本較貴，廠家很少會堆積庫存的，施工要求較高的工地會用到熱鍍鋅橋架，客戶去采購指定要“熱鍍鋅橋架”，廠家才會生產(chǎn)定制。

　　Many people think that galvanized cable trays are hot-dip galvanized cable trays, but it is actually wrong. Galvanized cable trays are not equal to hot-dip galvanized cable trays. Hot dip galvanized cable trays can be divided into two types: "hot-dip galvanizing" and "hot-dip galvanizing", with galvanizing being either "cold galvanizing" or "electro galvanizing". Galvanized cable tray is made of "cold galvanized sheet", while hot-dip galvanized cable tray is made of a layer of hot-dip galvanizing after surface treatment of cold galvanized cable tray, with different manufacturing processes. The cold galvanized zinc layer of the cold galvanized bridge is brighter than that of the hot-dip coating, but thinner and has weaker corrosion resistance. The hot-dip galvanized bridge has a thick hot-dip galvanized coating and strong corrosion resistance. The lifespan of galvanized cable trays is longer, and hot-dip galvanizing has an absolute advantage in terms of hardness and impact resistance. Of course, the cost of hot-dip galvanized cable trays is relatively high. The galvanized cable tray commonly used in engineering applications is actually a cold galvanized tray, because the production cost of hot-dip galvanized trays is relatively expensive, and manufacturers rarely accumulate inventory. Construction sites with high construction requirements will use hot-dip galvanized trays, and customers will purchase specified "hot-dip galvanized trays" before manufacturers can produce customized ones.

　　三、鋁合金橋架

　　3、 Aluminum alloy bridge frame

　　鋁合金電纜橋架具有外觀漂亮、結(jié)構(gòu)簡單、式樣獨特、荷載能力大、重量輕等特點。鋁合金電纜橋架表面陽極氧化后，它不但抗腐蝕、還有抗電磁干擾，尤其是抗屏蔽干擾，這是鋼制橋架不可替代的。當然也較鋼制橋架高很多。缺點是不適用于工程防火要求較高的場所

　　Aluminum alloy cable trays have the characteristics of beautiful appearance, simple structure, unique style, high load capacity, and light weight. After anodizing on the surface of aluminum alloy cable trays, they are not only corrosion-resistant but also resistant to electromagnetic interference, especially shielding interference, which cannot be replaced by steel cable trays. Of course, the price is much higher than that of steel cable trays. The disadvantage is that it is not suitable for places with high fire prevention requirements in engineering

　　。四、網(wǎng)格式橋架

　　4. Network format cable tray

　　開放式網(wǎng)絡(luò)橋架顧名思義又稱為：金屬網(wǎng)格式電纜橋架，開放式電纜橋架，網(wǎng)狀橋架。網(wǎng)格式橋架來源于歐洲，是橋架的發(fā)展和創(chuàng)新，由于網(wǎng)格式的特點，網(wǎng)格式橋架不適用于室外或有污染腐蝕性的空氣及飛濺液體的場合；適用于常見于高集成的數(shù)據(jù)機房、無塵車間、設(shè)備內(nèi)外的通信、電氣線路等……特點：

　　Open network cable tray, as the name suggests, is also known as metal mesh cable tray, open cable tray, or mesh cable tray. Grid format cable trays originated from Europe and are a development and innovation of cable trays. Due to the characteristics of grid formats, grid format cable trays are not suitable for outdoor environments or environments with polluted and corrosive air and splashing liquids; Suitable for high integration data centers, clean rooms, communication inside and outside equipment, electrical circuits, etc. Features:

　?。?）提高了系統(tǒng)升級和維護能力，為升級留有余地；

　　(1) Improved system upgrade and maintenance capabilities, leaving room for upgrades;

　?。?）在綜合布線系統(tǒng)可以靈活應(yīng)用，適用于布線橋架的上下走線；

　　(2) It can be flexibly applied in the comprehensive cabling system and is suitable for the up and down routing of cabling trays;

　?。?）線路和設(shè)備的檢修非常快速；

　　(3) The maintenance of lines and equipment is very fast and safe;

　　（4）節(jié)省了二次重復(fù)投資的昂貴成本；

　　(4) Saved the expensive cost of secondary repeated investment;

　?。?）自重僅是傳統(tǒng)橋架的1/5；

　　(5) The self weight is only 1/5 of that of traditional cable trays;

　?。?）比傳統(tǒng)橋架節(jié)省2/3的安裝時間；

　　(6) Save 2/3 of installation time compared to traditional cable trays;

　?。?）布線系統(tǒng)和周邊生產(chǎn)環(huán)境更清潔，衛(wèi)生和美觀；

　　(7) The wiring system and surrounding production environment are cleaner, more hygienic, and aesthetically pleasing;

　　（8）網(wǎng)狀的機構(gòu)使它的散熱更好，有效的延長線纜的使用壽命。，在選擇電纜橋架的荷載等級時，電纜橋架的工作均布荷載不應(yīng)大于所選電纜橋架荷載等級的額定均布荷載，如果電纜橋架的支吊架的實際跨距不等于2m時，則工作均布荷載應(yīng)滿足要求。各種組件及支吊架在滿足相應(yīng)荷載的條件下，其規(guī)格尺寸應(yīng)與托盤、梯架的直線段、彎通系列相匹配。工程實際中，在電纜橋架的規(guī)格尺寸選擇方面的問題是要么偏大，要么偏緊張。如何合理地選擇電纜橋架的規(guī)格尺寸呢？《民用建筑電氣設(shè)計規(guī)范》（JGJ16-2008）中8、10、7條規(guī)定：“電纜總截面積與托盤內(nèi)橫斷面積的比值，電力電纜不應(yīng)大于40%；控制電纜不應(yīng)大于50%。”

　　(8) The mesh like structure improves its heat dissipation and effectively extends the service life of the cable. Finally, when selecting the load level of the cable tray, the working uniform load of the cable tray should not exceed the rated uniform load of the selected cable tray load level. If the actual span of the support and hanger of the cable tray is not equal to 2m, the working uniform load should meet the requirements. The specifications and dimensions of various components and supports and hangers should match the straight sections and bending series of pallets and ladders under the corresponding load conditions. In practical engineering, the problem with selecting the specifications and dimensions of cable trays is either too large or too tight. How to choose the specifications and dimensions of cable trays reasonably? According to Articles 8, 10, and 7 of the "Code for Electrical Design of Civil Buildings" (JGJ16-2008), "The ratio of the total cross-sectional area of cables to the cross-sectional area inside the tray should not exceed 40% for power cables and 50% for control cables

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