Overall composite insulation cantilever applied to railway overhead contact system as well as manufacturing device and process

Abstract

The invention provides an overall composite insulation cantilever applied to a railway overhead contact system as well as a manufacturing device and process. The composite insulation cantilever comprises a high-strength insulating pipe and cladding insulation silicon rubber, wherein the high-strength insulating pipe is prepared with triple combination processes including continuous fiber pultrusion, continuous fiber winding, continuous fiber weaving for forming mesh tubes and impregnation with resin adhesives, and is coated with the insulation silicon rubber outside. Requirements for mechanical strength such as tensile strength, bending strength, torsional strength, vibration fatigue and the like can be met. The composite insulation cantilever has capacities of corrosion resistance, rust resistance, ultraviolet radiation aging resistance and the like after being coated with the silicon rubber. Besides, the weight of the composite cantilever is only 50% that of a metal cantilever, the lightweight of the overall insulation cantilever is realized, and the economic cost performance is more reasonable due to the increase of the lightweight of the overhead contact system. Particularly, the composite insulation cantilever has outstanding electrical insulation performance, thereby improving the overall insulation level of the overhead contact system. The overall cantilever for the overhead contact system is all insulated, so that the safety and reliability of the overhead contact system are greatly improved.

Description

technical field [0001] The invention relates to a composite insulating wrist arm, in particular to an integral composite insulating wrist arm of a catenary in a railway or subway, a manufacturing device and a process. Background technique [0002] Since more than half of the railways in our country run in the tunnels of high mountains, 90% of the subways run underground. The tunnels are dark, humid, and the ventilation effect is poor. , The equipment and net parts are prone to rust in such an environment for a long time, and the pollution resistance of the insulator is reduced. [0003] The natural environment in the salt lake area and windy area of ​​Osaka City on the Lanxin Railway is extremely harsh. The salt mud rolled up by the strong wind directly covers the entire catenary, and lasts for dozens of days. It occurs continuously in spring and autumn, and pollution flashover of insulators is already a frequent accident. . [0004] Flashover and tripping accidents caused...

AI Technical Summary

Problems solved by technology

[0011] The composite insulating arm made of traditional glass fiber reinforced epoxy resin pultruded electrical insulating mandrel covered with silicone rubber material, because the reinforcing fibers of the inner insulating mandrel are only longitudinal fibers, the test results show that the tensile strength is very high However, the bending strength is low, which cannot meet the technical requirements of the catenary arm

[0012] The composite insulating wrist arm made of traditional glass fiber reinforced epoxy resin winding tube coated with silicone rubber, because the inner insulating tube has a certain winding angle, and the change of winding angle is difficult to realize from the current technical level78 % of fibers are zero angle this technical requirement

Even zero-angle winding cannot meet the technical requirements, because the fiber tension of zero-angle winding on the winding machine cannot achieve the technical requirements

The test results show that the tensile strength and bending strength of the general glass fiber reinforced epoxy resin winding pipe cannot meet the technical requirements of the catenary wrist arm

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