Pantograph wear-resistant metal bow angle with isolation buffer layer

Abstract

The invention discloses a pantograph wear-resistant metal bow angle with an isolation buffer layer, which is mounted on a pantograph of a rail transit vehicle and comprises a metal bow angle pipe, theisolation buffer layer is arranged on the upper surface of the metal bow angle pipe, and a wear-resistant coating is arranged on the isolation buffer layer. The isolation buffer layer is made of a nichrome material with self-adhesion performance, and the thickness of the isolation buffer layer is 30-60 microns. The pantograph wear-resistant metal bow angle is simple in structure, low in cost andhigh in reliability, and can solve the problems that in the prior art, cracks and chippings occur after a wear-resistant coating is sprayed, micro-cracks are generated after wear-resistant coating fragments can penetrate into a bow angle pipe base body, and multi-point fatigue failure of a bow angle is caused by subsequent expansion of the micro-cracks at the same time. The pantograph angle application reliability of the pantograph is improved, and safe and efficient operation of the high-speed motor train unit is guaranteed.

Description

technical field [0001] The invention relates to a pantograph technology, in particular to a wear-resistant metal bow angle of a pantograph provided with an isolation buffer layer. Background technique [0002] The main function of the pantograph bow angle is to maintain the profile of the bow head and prevent the line fork from entering the lower part of the bow head during the operation of the vehicle, causing damage to the pantograph or catenary line. Because the bow angle is in direct sliding contact with the catenary line, it needs to have good wear resistance. [0003] The metal bow horns of the prior art are generally directly sprayed with wear-resistant coatings on the contact area between the bow horn tube and the catenary wire. This kind of bow horn has the following technical defects: [0004] The thermal expansion coefficient of the wear-resistant coating is quite different from that of the bow-angle tube substrate. After spraying, the wear-resistant coating has ...

AI Technical Summary

Problems solved by technology

[0005] Generally, the wear-resistant coating has high hardness and high brittleness. Fragments of the wear-resistant coating generated near the junction of the arc-angle tube substrate and the wear-resistant coating will penetrate into the arc-angle tube substrate and cause microcracks, and the subsequent expansion of microcracks will lead to bow angle multi-point fatigue failure

[0006] The solutions in the prior art do not protect the ba

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