I don't know how much you know about cable tray. Cable tray is a kind of building material commonly used in the electrical industry. It can protect the cable from external factors and ensure the safety of our electricity use. It's an assistant to us and the cable line, so to speak. Cable tray is laid inside the cable, it can make the installation of electrical appliances to a beautiful standard requirements, and we only need to open the cover in the maintenance, very convenient. Now let's learn how to choose the material of cable tray in Jinan. Let's have a look.

1、濟南電纜橋架是用好的鋼板加工成形的全封閉高強度矩形鋼管，外觀用鍍鋅處理，大大提高了防腐蝕能力。橋梁內外應光滑平整，無棱角，不應有扭曲、翹曲等變形現象。

1. Jinan cable tray is a fully enclosed high strength rectangular steel pipe processed with good steel plate. The appearance is treated with zinc plating, which greatly improves the corrosion resistance. The inside and outside of the bridge should be smooth and flat without edges and corners, and there should be no distortion, warpage and other deformation phenomena.

2、分線盒和插座盒： 敷線平面中，用作導線的轉彎、相接。交叉是包線的十字路口，可以進行不同管形的變換和一定范圍的高度調整。

2. Junction box and socket box: in the wiring plane, it is used for turning and connecting wires. Intersection is the intersection of the envelope, which can be transformed into different pipe shapes and adjusted in a certain range of height.

雙橋線路配電箱內設置隔離板，確保強電流和弱電流之間的隔離和屏蔽。當敷設平面上的強弱電傳輸非常復雜時，橋梁采用水平位置的加深接線盒在水平方向穿越橋梁，大大方便了各種線路的走向。

Isolation board is set in the distribution box of double bridge line to ensure the isolation and shielding between strong current and weak current. When the strong and weak current transmission on the laying plane is very complex, the bridge adopts the deepening of horizontal position, and the junction box crosses the bridge in the horizontal direction, which greatly facilitates the direction of various lines.

3、專用出線口:用于引出導線，如有必要可作為電源、電話、視頻插孔或計算機終端的出口。距分線盒230mm設置一個出線口，出線口之間標準間距為600mm。假如為雙橋架，兩跨接相鄰小組出線口距離為1400mm。

3. Special outlet: it is used to lead out wires, and can be used as the outlet of power supply, telephone, Video Jack or computer terminal if necessary. An outlet is set 230mm away from the junction box, and the standard spacing between outlets is 600mm. If it is a double bridge frame, the distance between two adjacent groups is 1400mm.

4、連接支承附件:直線連接使用連通器的圓管接頭，接線盒的圓管連接使用變徑接頭，齒條和圓管的連接使用端子，支架和調整螺栓用于支架支承和高度調整，其調整螺栓的長度因施工條件而異，高度調整一般為30~50mm的s形深度專用接頭用于縱橫交叉或橫梁通過，扁平曲線用于橋的拐角，縱向彎曲用于橋的上下連接口，其他橋專用粘接劑用于橋與橋、橋與布線盒的連接部。

4. Connecting supporting accessories: straight connection uses circular pipe connector of connector; round pipe connection of junction box uses reducing joint; connection of rack and pipe uses terminal; bracket and adjusting bolt are used for support and height adjustment. The length of adjusting bolt varies according to construction conditions. S-shaped depth special joint with height adjustment of 30 ~ 50mm is used for vertical and horizontal crossing or cross beam passing through The horizontal curve is used for the corner of the bridge, the longitudinal bending is used for the upper and lower joint of the bridge, and the special adhesive for other bridges is used for the connection between the bridge and the bridge, and between the bridge and the wiring box.

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