Special clamp and clamp group for serpentine laying of large-section cables and laying method

Abstract

The invention discloses a special clamp and a clamp group for serpentine laying of large-section cables and a laying method. The clamp includes a clamp body, a rotary base, a slider and a guide rail.The clamp body includes a connecting plate, a lower clamp body, an upper clamp body and connecting bolts. After the upper and lower clamp bodies are closed, a cylinder for clamping a cable is formed.The cylinder is provided with bell mouths at both ends. The connecting plate is rotationally connected with the rotary base, the rotary base is fixedly connected with the slider, and the slider and the guide rail form a sliding pair. When the clamp is used to clamp a cable, the 'bell mouth' structures at the ends of the clamp better match the bending degree of the cable during serpentine laying, so that the mechanical damage of the clamp ports to the cable is reduced, and the service life of the cable is prolonged. Through the setting of the rotary base, the position and angle of the clamp canbe quickly adjusted, the torsion stress generated in the laying process of the cable and the thermal mechanical force generated in the running process can be released, and the running reliability ofthe cable is improved. The use of the clamp group improves the efficiency of cable laying.

Description

technical field [0001] The invention relates to the technical field of cable laying, in particular to a special clamp for serpentine laying of large-section cables, a clamp set and a laying method. Background technique [0002] With the increasing demand for electricity and the shortage of underground cable channel resources, cables with long distances, large cross-sections, and high voltage levels are widely used. For the above-mentioned transmission cable lines, due to the long laying distance, the ground conditions in the areas where the lines pass are relatively complicated, and there are situations such as crossing important traffic roads, rivers, railways, and densely populated areas, it is extremely difficult to excavate the road surface, and most of them use shields. In the form of a tunnel, the power transmission cable is laid 10 to 30 meters below the ground. [0003] During the operation of the power cable, when the line load current or the ambient temperature ch...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problem that the clamp is easy to cause mechanical damage to the cable when using the existing cable clamp for serpentine laying, the first purpose of the present invention is to provide a special clamp for serpentine laying of large cross-section cables

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