Cable tray is widely used in petroleum, chemical industry, electric power, telecommunications and other industries. It is mainly used for the laying of power cables, control cables, lighting lines and telecommunications cables. The bottom plates of various existing cable trays are flat plate structures. Due to the large span of the bridge, the weight of the cable and the bridge itself is also large. In order to ensure the bearing capacity, the metal materials pressing the bridge tray need to have corresponding thickness and strength. At present, the steel plate of about 3mm is generally used to meet the strength requirements. The bridge made of such thick steel plate has considerable weight, so the manufacturing cost is relatively high, which brings great difficulties to transportation and construction lifting. Moreover, during the operation of the line after the completion of construction, due to its own heavy, coupled with the natural loosening of vibration fixing parts and supporting parts, the bridge gradually sinks, which is easy to lead to accidents and increase the difficulty and amount of maintenance. These situations have become common and long-standing problems in the project.
In view of the above problems, light shockproof cable bridge has been gradually paid attention to and developed. The cable bridge can reduce the dead weight of the bridge, reduce energy consumption and reduce the hidden dangers caused by vibration under the condition of ensuring the original bearing capacity.
Light cable bridge structure: it includes the bottom plate and the bridge ladder edge placed at both ends of the bottom plate and perpendicular to each other. The bottom plate and ladder edge are stamped from a whole steel plate. An inverted S-bend is set at the connection between the bottom plate and ladder edge, which can reduce the impact force caused by vibration and play the function of earthquake prevention. The bottom plate is provided with vertical and horizontal stiffeners. That is, transverse stiffeners are set in the middle of the width direction of the bottom plate, and longitudinal stiffeners are set on both sides of the transverse stiffeners. The stiffener is in the shape of long circular groove. The stiffener is formed by one-time stamping of the die, which is staggered and beautiful in appearance.
The thickness of the steel plate used in the bridge is nearly half that of the steel plate used in the construction, and the energy consumption can be greatly reduced by strengthening the thickness of the steel plate and the thickness of the steel plate used in the bridge. After the construction, the energy consumption can be reduced by nearly half, and the thickness of the steel plate is still the same as that of the bottom plate, The problem of collapse caused by excessive dead weight of the bridge is solved. At the same time, the inverted S-bend set at the connection between the bottom plate and the ladder edge can solve the impact force caused by vibration and has the function of earthquake prevention. After the cable bridge is adopted, the lifting operation can be completed only with special equipment, which can be completed manually. In this way, the construction efficiency is greatly improved, the work progress is improved, the construction cost is saved, the energy consumption is reduced, and the economic benefit is improved..
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