山东电缆桥架伸缩量不够时，怎么办？若由于电缆直径大或电缆较多，不易在伸缩缝两侧或一侧的桥架里留电缆伸缩量时，应按不同情况，在伸缩缝处桥架下方或在直线段桥架的变宽直通里留电缆伸缩量；当伸缩缝处电缆桥架下方有足够的空间时，断开桥架，断开距离B应大于建筑物伸缩缝宽L，而且要保证所有电缆能随伸缩缝自由伸缩，不受损坏，同时满足伸和缩时，电缆最小弯曲半径R的要求；若伸缩缝处桥架下方没有足够的空间，不能作伸缩处理时，应在离伸缩缝最近处设置变宽直通。变宽直通的规格，应按能留足电缆伸缩余量(大于L)，同时伸缩时都能满足电缆最小弯曲半径需要。
Shandong cable bridge expansion amount is not enough, what can I do? If or cable is more, because of the large diameter of cable is not easy to or on the side of the bridge on both sides of expansion joints in the stay cables expansion amount, should according to different situations, or at the bottom of the expansion joints of bridge in straight line bridge widening road stay cables expansion amount; When expansion joints in cable tray below has enough space, the broken bridge, disconnect the distance should be greater than the building expansion joints B L wide, and to ensure that all cables can along with the expansion joints free expansion, from being damaged, stretch and shrink at the same time, the requirement of the minimum bending radius R; If below the bridge expansion joint place does not have enough space, cannot make scale processing, should be in a setting expansion joint closest widen the pass-through. Can widen the pass-through of specifications, should press standing cable telescopic allowance (greater than L), at the same time scale can meet the requirements of the minimum bending radius.
山东电缆桥架
Shandong cable tray
山东电缆桥架布线是讲究方法和技巧的，若是不注意会造成不必要的损失，今天小编来给大家讲讲电缆桥架布线方法。
Shandong cable tray wiring is pay attention to methods and techniques, if do not pay attention to cause unnecessary loss, small make up today to tell you something about cable tray wiring method.
(1)不同电压，不同用途的电缆，不宜敷设在同一层桥架上。
(1) different voltage, different USES of cable, should not be on the same floor laying bridge frame.
(2)在有腐蚀或特别潮湿的场所采用电缆桥架布线时，应根据腐蚀介质的不同采取相应的防护措施，并宜选用塑料护套电缆。
(2) in the places where corrosion or special moisture using cable tray wiring, should take the corresponding protective measures according to different corrosion medium, and appropriate chooses plastic sheath cable.
(3)电缆桥架(托盘)水平安装时的距地高度一般不宜低于2.50m，垂直安装时距地1.80m以下部分应加金属盖板保护，但敷设在电气专用房间(如配电室，电气竖井、技术层等)内时除外。
(3) the level of cable tray (tray) when installation height should not be commonly less than 2.50 m distance, vertical distance to 1.80 m in the following sections when installation should add metal cover plate to protect, but lay in electrical special room (such as substation, electrical shaft, technology level, etc.) within the exception.
(4)电缆桥架水平安装时，宜按荷载曲线选取最佳跨距进行支撑，跨距一般为1.5～3m。垂直敷设时，其固定点间距不宜大于2m。
When mounted horizontally, (4) the cable tray should be selected according to the load curve best support span, span 1.5 ~ 3 m in general. Vertical installation, the fixed point spacing should not be greater than 2 m.
(5)几组电缆桥架在同一高度平行安装时，各相邻电缆桥架间应考虑维护、检修距离。
(5) sets of parallel installation cable tray in the same height, the distance between adjacent cable tray should consider the maintenance or overhaul.
(6) in the cable bridge frame can be no distance between laying cable, cable bridge in cross-sectional fill rates: power cable should not be greater than 40%; Control cable should not be greater than 50%.
(7)在室内采用电缆桥架布线时，其电缆不应有黄麻或其他易延燃材料外护层。
(7) in indoor using cable tray wiring, the cable should be no jute or other Yi Yan burning materials outer sheath.
(8)电缆桥架与各种管道平行或交叉时，其最小净距应符合表DQ4-1的规定。
(8) parallel cable tray with a variety of pipe or cross, its minimum clear distance should comply with the provisions of the table DQ4-1.
(9)其他要求见本章电缆桥架安装要求示意图。
(9) other demanded to see the cable tray installation requirements of this chapter.
(10)电缆桥架内的电缆应在下列部位进行固定。垂直敷设时，电缆的上端及每隔1.50～2m处。水平敷设时，电缆的首、尾两端、转弯及每隔5～10m处。
(10) cable tray in the cable should be fixed in the following parts. With the top of the vertical run, cable and every 1.50 ~ 2 m. Level, laying cable first, turn tail ends, and every 5 ~ 10 m.
(11)电缆桥架内的电缆应在首端、尾端、转弯及每隔50m处，没有编号、型号及起、止点等标记。
(11) cable tray in the cable should be at the head end, tail end, and turn every 50 m, there is no serial number, model and markers such as up, check point.
(12)电缆桥架在穿过防火墙及防火楼板时，应采取防火隔离措施。
(12) cable bridge across the firewall and the fire floor, fire prevention isolation measures should be taken.
(13)山东电缆桥架
不宜安装在腐蚀性气体管道和热力管道的上方及腐蚀性液体管道的下方，否则应采取防腐、隔热措施。
(13) shandong cable tray should not be installed in the upper part of the corrosive gas pipe and heat pipe and corrosive liquid pipe below, otherwise, anti-corrosion, insulation measures should be taken.