槽式桥架作为布线工程的一个配套项目，目前尚无专门的规范指导，各生产厂家的规格程式缺乏通用性，因此，设计选型过程应根据弱电各个系统电缆的类型、数量，合理选定适用的桥架。下面 济南电缆桥架厂家为您讲解更多：

As a supporting project of wiring engineering, there is currently no specific specification guidance for slot type cable trays. The specifications and programs of various manufacturers lack universality. Therefore, the design and selection process should reasonably select suitable cable trays based on the type and quantity of cables in various weak current systems. Now, the manufacturer of cable tray in Jinan will explain more to you:

(1)、确定方向：根据建筑平面布置图，结合空调管线和电气管线等设置情况、方便维修，以及电缆路由的疏密来确定槽式桥架的佳路由。在室内，尽可能沿建筑物的墙、柱、梁及楼板架设，例如在利用综合管廊架设时，则应在管道一侧或上方平行架设，并考虑引下线和分支线尽量避免交叉，如无其它管架借用，则需自设立(支)柱。

(1) Determine the direction: Based on the building layout plan, combined with the installation of air conditioning pipelines and electrical pipelines, convenient maintenance, and the density of cable routing, determine the optimal route for the trough type bridge. Indoor, it is best to erect along the walls, columns, beams, and floors of the building. For example, when using a comprehensive pipe gallery, it should be erected parallel to one side or above the pipeline, and consideration should be given to avoiding the intersection of down conductors and branch lines as much as possible. If there are no other pipe racks to borrow, it is necessary to set up (support) columns by oneself.

(2)、荷载计算：计算槽式桥架主干线纵断面上单位长度的电缆重量。

(2) Load calculation: Calculate the weight of the cable per unit length on the longitudinal section of the trunk line of the trough bridge.

(3)、确定桥架的宽度：根据布放电缆条数、电缆直径及电缆的间距来确定槽式桥架的型号、规格, 托臂的长度,支柱的长度、间距、桥架的宽度和层数。

(3) Determine the width of the cable tray: Based on the number of cables laid, cable diameter, and cable spacing, determine the model and specifications of the trough type cable tray, the length of the support arm, the length and spacing of the pillars, the width and number of layers of the cable tray.

(4)、确定安装方式：根据场所的设置条件确定桥架的固定方式，选择悬吊式、直立式、侧壁式或是混合式，连接件和紧固件一般是配套供应的，此外，根据桥架结构选择相应的盖板。

(4) Determine the installation method: Determine the fixing method of the bridge based on the setting conditions of the site. Choose the suspension type, vertical type, side wall type, or hybrid type, and the connectors and fasteners are generally supplied in a complete set. In addition, select the corresponding cover plate according to the bridge structure.

(5)、绘出槽式桥架平、剖面图,局部部位还应绘出空间图，开列材料表。

(5) Draw a flat and sectional view of the trough type cable tray, and also draw a space map for local parts, listing the material list.

2、如与电力槽式桥架合用时，应将电力电缆和弱电电缆各放置一侧，中间采用隔板分隔。

2. When used in conjunction with power trough type cable trays, power cables and weak current cables should be placed on one side respectively, separated by partitions in the middle.

3、弱电电缆与其它低电压电缆合用桥架时，应严格执行选择具有外屏蔽层的弱电系统的弱电电缆，避免相互间的干扰。

3. When using a bridge with weak current cables and other low-voltage cables, strict selection of weak current cables with external shielding layers should be carried out to avoid mutual interference.

槽式桥架安装和桥架内电缆敷设，应按已批准的设计文件施工。

The installation of trough type bridge and the laying of cables inside the bridge should be carried out in accordance with the approved design documents.

金属槽式桥架及其支架和引入或引出的金属电缆导管必须接地（PE）或接零（PEN）可靠，且必须符合下列规定:

The metal trough type cable tray and its bracket, as well as the metal cable conduits that are introduced or led out, must be reliably grounded (PE) or neutral (PEN), and must comply with the following regulations:

金属槽式桥架及支架全长应不少于2处与接地（PE）或接零（PEN）干线相连接；

The total length of the metal trough type bridge and bracket should not be less than 2 places connected to the grounding (PE) or neutral (PEN) main line;

非镀锌槽式桥架间连接板的两端跨接线铜芯接地线，接地线小允许截面积不小于4mm2；

The copper core grounding wire at both ends of the connecting plate between non galvanized trough type cable trays, with a small allowable cross-sectional area of no less than 4mm2 for the grounding wire;

镀锌槽式桥架间连接板的两端不跨接接地线，但连接板两端不少于2个有防松螺帽或防松垫圈的连接固定螺栓。

The two ends of the connecting plate between the galvanized trough type cable tray shall not be connected to the grounding wire, but there shall be no less than two connection fixing bolts with locking nuts or washers at both ends of the connecting plate.

电缆敷设严禁有绞拧、铠装压扁、护层断裂和表面严重划伤等缺陷。

Cable laying is strictly prohibited from defects such as twisting, flattening of armor, breakage of protective layer, and severe surface scratches.

槽式桥架处如有防火要求的场所，应采取防火隔离措施。

If there are fire prevention requirements at the slot type bridge, fire isolation measures should be taken.

比起造价昂贵、高科技的硬件和软件，桥架比较很不起眼，也很少为人关注，但它却也是整个布线工程中不可缺少的部分。您有需求就来我们网站 //www.comprepyme.com咨询吧！

Compared to expensive and high-tech hardware and software, cable trays are relatively inconspicuous and rarely receive attention, but they are also an indispensable part of the entire wiring project. Come to our website if you have any needs //www.comprepyme.com Consult!