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桥架内敷设电缆有哪些原则!

桥架的应用现在十分的广泛,下面济南电缆桥架公司就给大家详细的讲解一下桥架内敷设电缆应注意的原则问题,希望对大家有所帮助!
The application of bridge frame is very extensive now. Now Jinan Cable Bridge Frame Company will give you a detailed explanation of the principles of cable laying in the bridge frame, hoping to be helpful to you all!
1. 桥架电缆垂直敷设,一般宜自上而下敷设,在土建没拆吊车前,用吊车将电缆吊至楼层顶部;敷设前选好位置,架好电缆盘,电缆向下弯曲部位应用滑轮支撑电缆,在电缆轴和盘处以及楼层处应设制动和防滑措施;自下而上敷设时,低层小截面电缆可用滑轮和大绳人力牵引敷设,高层大截面电缆应用机械牵引敷设,敷设应安排列图进行,以免交叉,排列应整齐,间距应均匀,大于45°倾斜的电缆每隔2m处设固定点;垂直敷设于桥架内的电缆,每敷设一根应固定一根,全塑电缆每1m应固定一次,其他电缆固定点为1.5m,控制电缆固定点应为1m。
1. Vertical laying of bridge cables should generally be laid from top to bottom. Before construction, the cables should be lifted to the top of the floor by crane; before laying, the position should be selected, the cable tray should be erected, the pulley cable should be used in the downward bending part of the cable, and braking and anti-skid measures should be laid from bottom to top at the cable axle, tray and floor. When laying low-rise and small-section cables, pulleys and large ropes can be used for manpower traction. High-rise and large-section cables should be laid by mechanical traction. Laying should be arranged in a chart so as to avoid crossing. Arrangement should be neat and spacing should be uniform. Cables with inclination greater than 45 degrees should be fixed at 2 m intervals. Cables laid vertically in the bridge frame should be laid with one cable. One cable should be fixed, the fixed point of all plastic cable should be fixed once per meter, the fixed point of other cable should be 1.5 m, and the fixed point of control cable should be 1 m.
2. 电缆穿过防火墙及防火楼板时,应尽量水平或垂直敷设,应先垫上一层60mm的泡沫石棉毡或矿棉,放一层电缆,再放一层60mm的泡沫石棉毡或矿棉,再放一层电缆,依次放置;电缆敷设完成后,用泡沫石棉毡或矿棉把洞堵严,有些小洞可用电缆防火堵料堵塞。墙洞两侧应用不小于1.5mm厚的钢板将泡沫石棉毡或矿棉保护起来。在防火墙两侧1m以内厚度达到0.5mm~1mm,对铠装油浸纸绝缘电缆,先包一层玻璃丝布,再涂防火涂料厚度0.5mm~1mm或直接涂1~1.5mm防火涂料,作法见图12.4.4(3)。也可用膨胀型防火材料,按产品技术要求封堵。
济南电缆桥架
2. when cables pass through firewalls and fire-resistant floors, they should be laid as horizontal or vertical as possible. First, lay a layer of 60mm foam asbestos felt or mineral wool, put a layer of cable, then put a layer of 60mm foam asbestos felt or mineral wool, then put a layer of cable in order. After the cable is completed, use foam asbestos felt or mineral wool to block up the hole. Some small holes can be blocked by fire-proof plugging materials for cables. The two sides of the wall hole shall be protected by foam asbestos felt or mineral wool, which is not less than 1.5mm thick. For armored oil-immersed paper insulated cables, a layer of glass silk cloth is coated first, then the thickness of fire retardant coatings is 0.5mm~1mm or the thickness of fire retardant coatings is 1~1.5mm directly, as shown in Figure 12.4.4 (3). It can also be blocked with expansive fire-proof materials according to the technical requirements of the products.
3. 桥架内电缆水平敷设:应将电缆安排列图敷设,单层摆放,排列整齐,不得交叉,拐弯处应以大截面电缆弯曲半径为准。不同等级电压的电缆应分层敷设,高压电缆应敷设在上层。同等电压的电缆沿桥架敷设时,电缆水平净距不得小于35mm。首层两端,转弯处两侧及每隔5~10m应固定一次。
3. Horizontal laying of cables in bridge frame: cables should be laid out in laying plans, single-layer laying, neatly arranged and not crossed. The bending radius of large cross-section cables should be taken as the criterion. Cables of different voltage levels should be layed in layers, and high voltage cables should be laid in the upper layers. When the cable with the same voltage is laid along the bridge, the horizontal net distance of the cable shall not be less than 35 mm. The two ends of the first floor, the two sides of the turning point and every 5-10 m should be fixed once.
今天就暂且和大家聊到这里,希望这篇由济南电缆桥架的小编整理的知识可以帮助到您,如果您对此还有疑问,详情请咨询我们的官方。http://www.blueaptos.com
Today I'm going to talk to you for a moment. I hope this knowledge of the arrangement of Jinan cable bridge can help you. If you have any questions about this, please consult our official for details. Http://www.blueaptos.com
 
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