Chai Jin _ tray cable bridge cable bridge (certified) _ Yunnan cable tray

[Chai Jin cable tray to recommend the star product - Bridge] cable tray installation should pay attention on the cable tray installation Some explanations should be noted: (1) visual inspection of the cable tray into the construction site, should submit the following information products. factory certification, provincial and municipal quality supervision station cable tray sheet thickness periodic inspection report and related technical appraisal documents should meet the requirements. Galvanized cable tray surface coating should be uniform, without over-burning, hanging gray, not galvanized local defects. Electrostatic spray should be smooth, uniform, the skin can not afford cable tray fire, no bubbles, blisters on the bridge itself should be flat trough cable tray, no distortion, wall should be smooth, no glitches bridge weld surface should be uniform, not tainted welding, cracks, burn and other defects. [Chai Jin cable tray to recommend the star product - the bridge] choose a size, width and height of the bridge on the press table selection, and shall comply with the provisions of the true value of the cable charging rate does not exceed the relevant standards, and power cables desirable 40- 50%, control cables desirable 50-70%, and 10-25% of the need to stay away style development margin. 2, various elbow and accessories shall conform to the specifications and conditions of the project layout and matching tray. 3, support and hanger size selection, should bridge specification, layers, span configuration and other conditions. And shall meet the load requirements. 4, the bridge cross-sectional area of ??choice in Table [Chai Jin cable tray to recommend the star product - Bridge] checking the formula: Q = q1 + q2 using the formula: q1 - Cable uniform load (both layers fetch maximum distributed load) (kN / m2), is uniformly distributed load tray, ladder or cable tray load; q2-- consider cable laying or maintenance of cable tray, the human equivalent of the weight of uniformly distributed load (kN / m2), calculate the value of q2, people generally based on the weight of p = 90kg dollars. Said the concentrated load and uniform load bending moment 2 by Maximum bending moment equal conditions shown in translation: Let pι / 4 = q2ι2 / 8 则 q2 = 2p / ι∵P = 90kg∴q2 = 180 / ι where: P --1 people load (kg) ι - 1 support points spacing (maximum value if the fulcrum distance range) (m) q2--1 human equivalent uniform load (kg / m) based on the preliminary determine the bridge models, specifications and fulcrum distance, consult the manufacturer of the sample data, cross-check the spacing and bridge models, until meet the load requirement. Chai Jin _ tray cable bridge cable bridge (certified) _ Yunnan cable tray cable tray provided by the Tianjin Chai Jin Limited. Chai Jin Tianjin cable bridge Limited (www.tjcjdlqj.com) is Tianjin, metal building materials leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Chai Jin leader in cable tray with the staff warmly welcome all inquiries negotiations to create Chai Jin cable tray a better future.