As a supporting project of the cabling project, there is no special specification guidance at present, and the manufacturer's specification program is lack of universality. Therefore, the design and selection process should reasonably select the applicable Jinan cable bridge according to the type and quantity of cables in the weak current system.
(1) Determine the direction: determine the better route of cable tray according to the building layout plan, combined with the setting of air conditioning pipeline and electrical pipeline, convenient maintenance, and the density of cable route. In the room, it shall be erected along the walls, columns, beams and floors of the building as far as possible. If it is possible to use the integrated pipe gallery for erection, it shall be erected in parallel on one side or above the pipe, and the down lead and branch line shall be avoided from crossing as far as possible. If there is no other pipe rack to borrow, it is necessary to set up (support) columns by itself.
(2) Load calculation: calculate the weight of cable per unit length on the profile of cable bridge trunk line.
(3) Determine the width of the cable tray: determine the model and specification of the cable tray, the length of the arm, the length and spacing of the support, the width and number of layers of the cable tray according to the number of cables laid, the diameter of the cable and the spacing of the cable.
(4) Determine the installation method: determine the fixing method of the bridge according to the setting conditions of the site. Select the suspension type, vertical type, side wall type or hybrid type. The connectors and fasteners are generally supplied together. In addition, select the corresponding cover plate according to the bridge structure.
(5) Draw the plane and section drawings of the cable tray, and the space map and material list for local parts.
If it is used together with the power cable bridge, the power cable and the weak current cable shall be separated on the straight side with a partition in the middle. When the weak current cable shares the bridge with other low voltage cables, the weak current cable of the weak current system with external shielding layer shall be strictly selected to avoid mutual interference. Come to our website for more relevant content http://www.sddlqj.cn consulting service