我們都知道“橋架”即是電纜橋架。分為槽式電纜橋架、托盤式電纜橋架和梯級式電纜橋架、網格橋架等結構，由支架、托臂和安裝附件等組成。山東橋架廠家認為如果說到防火橋架的防火性能和作用，以及與普通橋架的區(qū)別，可能不少人員都是只知其一就不知其二，甚至還有一些人員是一問三不知的。

We all know that "bridge" is cable tray. It is divided into trough type cable tray, tray type cable tray, ladder type cable tray, grid bridge and other structures, and consists of support, corbel and installation accessories. Shandong cable tray manufacturers believe that when it comes to the fire performance and function of fireproof cable trays, as well as the differences from ordinary cable trays, many personnel may only know one thing and not know the other, and even some personnel may not know the other.

1、防火橋架的特點和作用

1. The characteristics and functions of fire resistant cable trays

防火橋架是電纜橋架的一種型號，標準名應該叫耐火橋架，就是在一定溫度下橋架內的電纜能維持一定時間運行。在普通架的表面涂裝防火涂料，以發(fā)揮防火阻燃的效果。其實橋架本身不會著火。起火的只有電纜。

Fire resistant cable tray is a type of cable tray, and its standard name should be fire resistant cable tray, which means that the cable inside the cable tray can operate for a certain time under a certain temperature. Apply fire retardant coating on the surface of ordinary frames to achieve the effect of fire resistance and flame retardancy. In fact, the bridge itself will not catch fire. The only thing that caught fire was the cables.

整體安裝方便、結構合理、壽命長、美觀，電纜安裝在電纜橋架上。主要是為了發(fā)生火災事故時能維持電力供應減少傷亡。

The overall installation is convenient, the structure is reasonable, the service life is long, and the appearance is beautiful. The cable is installed on the cable tray. Mainly to maintain power supply and reduce casualties in case of fire accidents.

2、防火橋架標準及常用規(guī)格：

2. Standard and common specifications for fire resistant cable trays:

防火電纜橋架的標準長度按照規(guī)范可以分為2m、3m、4m和6m。托盤結構防火電纜橋架的標準長度一般為2m一節(jié)。網格結構防火電纜橋架的標準長度一般為3m一節(jié)。防火電纜橋架直線段的標準長度一般有2m、3m、4m、6m幾種。防火電纜橋架彎通的內側彎曲半徑有50mm、100mm、150mm、200mm、300mm、400mm、600mm等。

The standard length of fireproof cable tray can be divided into 2m, 3m, 4m and 6m according to the specification. The standard length of tray structure fireproof cable tray is generally 2m. The standard length of grid structure fireproof cable tray is generally 3m. The standard length of straight section of fireproof cable tray is generally 2m, 3m, 4m and 6m. The inner bending radius of the fireproof cable tray is 50mm, 100mm, 150mm, 200mm, 300mm, 400mm, 600mm, etc.

防火電纜橋架的常用寬度有50mm、100mm、150mm、200mm、300mm、400mm、500mm、600mm、800mm、1000mm等。其中200mm、300mm、400mm寬度為常見。防火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。

Common widths of fireproof cable tray are 50mm, 100mm, 150mm, 200mm, 300mm, 400mm, 500mm, 600mm, 800mm, 1000mm, etc. Among them, 200mm, 300mm, and 400mm widths are common. The weight determinants of fireproof cable tray include the width, height, thickness and density of the tray. The wider the width, the greater the weight. For example, 200 * 50mm is heavier than 100 * 50 tray, and the higher the height, the heavier the weight. For example, 100 * 100mm is heavier than 100 * 50mm tray, and the thicker the thickness, the heavier the weight. For example, 200 * 100 * 1.2mm is heavier than 200 * 100 * 1.0mm tray, and steel tray is heavier than aluminum alloy tray.

防火電纜橋架的常用高度有50mm、100mm、150mm、200mm，電纜數量比較少的話一般使用50mm，100mm是使用多的高度之一。防火電纜橋架寬度和高度的尺寸偏差應該在GB/T1804-2000中V級的規(guī)定范圍內，其中要注意的是，防火電纜橋架蓋板的寬度要取正偏差，槽體或梯架的寬度要去負偏差。

The common heights of fireproof cable tray are 50mm, 100mm, 150mm and 200mm. If the number of cables is relatively small, 50mm is generally used. 100mm is one of the heights used more. The size deviation of the width and height of the fireproof cable tray shall be within the range of Grade V in GB/T1804-2000. It should be noted that the width of the fireproof cable tray cover plate should be positive deviation, and the width of the tray or ladder should be negative deviation.

對于槽式防火電纜橋架來說，連接片的高度取決于橋架的高度，連接片的寬度取決于橋架的寬度。連接片的厚度要與橋架托盤的厚度保持一致，或者厚一個等級。防火電纜橋架的常用厚度有1.0mm、1.2mm、1.5mm、2.0mm、2.2mm、2.5mm等。1.0mm厚度一般適用于寬度<=100mm的防火電纜橋架。

For trough type fireproof cable tray, the height of the connector depends on the height of the tray, and the width of the connector depends on the width of the tray. The thickness of the connecting piece should be consistent with the thickness of the bridge tray, or one level of thickness. The common thickness of fireproof cable tray is 1.0mm, 1.2mm, 1.5mm, 2.0mm, 2.2mm, 2.5mm, etc. 1.0mm thickness is generally applicable to fireproof cable tray with width<=100mm.

防火電纜橋架在安全工作載荷的情況下，其撓度值與其支吊架的跨距相比，該比例不應該大于1/200，否則會導致防火電纜橋架發(fā)生彎曲變形或破裂，出現(xiàn)安全事故。防火電纜橋架水平安裝時，應該按照載荷規(guī)范選擇支、吊架間距，距離不應該大于2米。防火電纜橋架支、吊架的間距也要參考其產品性能參數說明來設置。更多相關內容就來我們網站http://m.ymmgjx.net咨詢吧！

Under the condition of safe working load, the deflection value of fireproof cable tray should not be greater than 1/200 compared with the span of its supports and hangers, otherwise, the fireproof cable tray will be bent, deformed or broken, resulting in safety accidents. When the fireproof cable tray is installed horizontally, the spacing between supports and hangers should be selected according to the load specification, and the distance should not be more than 2m. The spacing between supports and hangers of fireproof cable tray shall also be set according to the product performance parameter description. For more related content, come to our website http://m.ymmgjx.net Consult!