A long-life trolleybus pantograph slide plate and preparation method thereof

Abstract

The invention relates to a novel long-life trolleybus pantograph contact strip and a preparation method thereof. According to the defects of an existing trolleybus pantograph contact strip, the invention provides a design and preparation method of a novel trolleybus pantograph contact strip. A plasma spraying method is adopted for performing in-situ preparation of a Cu-TinO2n-1 composite coating on a contact strip substrate so as to replace an existing carbon contact strip. The coating is prepared from the following components in mass percent: 65-75% of Ti4O7, 10-20% of Cu, 8-15% of TixO2x-1 and 5-10% of TiO2, wherein x is greater than or equal to 5 and less than or equal to 10. Ceramic Ti4O7 in the coating has high conductivity and wear resistance, and a metal phase Cu is added to improvethe current collection stability, so that the conductivity, wear resistance and corrosion resistance of the pantograph contact strip are effectively improved, the service life of the pantograph contact strip is prolonged, and the pantograph contact strip has good application prospects.

Description

technical field [0001] The invention relates to the field of preparation of trolley bus pantograph slides, in particular to a trolley bus pantograph slide with high performance and long life and a preparation method thereof. Background technique [0002] Known as "green public transport", trolleybus is a vehicle between trams and internal combustion engine buses. It combines all the advantages of trams and internal combustion engine buses, and overcomes the two Disadvantages of transportation. Compared with trams, the noise generated by the traction motors of trolleybuses during operation is lower than that of internal combustion engines in automobiles, and the noise generated by rubber tire friction is also very small, with smooth acceleration and braking, zero pollution emissions, and increased ride comfort. The mechanical reliability and energy efficiency of the trolley bus are relatively high, the service life is long, there is no power loss at idle speed, the accelerat...

AI Technical Summary

Problems solved by technology

(1) The mechanical strength of the carbon skateboard is low, and the impact toughness is relatively poor. During the operation of the trolleybus, the pantograph skateboard is easy to fall off and break, and the service life is low. It is severely worn during use and prone to local grooves , especially in the rainy season and humid areas, due to the increased friction, the probability of pantograph-catenary failure is higher

(2) The inherent resistance of carbonaceous materials is large, and the contact pressure drop is relatively high. At the same time, due to parameter fluctuations in the production process, the performance of carbonaceous materials is uneven, which has a great impact on the electrical conductivity of the pantograph.

(3) The preparation of the existing pantograph carbon slide needs to go through multiple processes such as raw material mixing, cold pressing and hot pressing, pressure curing and high-temperature graphitization. The process has many steps, the production process is time-consuming and laborious, and the production efficiency is low.

(4) The production cost of the existing pantograph is relatively high. Due to the complexity and difficulty of the production process and the increase in material cost, the cost of the pantograph is relatively high

[0005] The above patents have improved the pantograph slide in terms of structure and materials, but still use carbon-based materials to prepare the pantograph slide, which cannot fundamentally solve the problem of carbon slide breakage and slag drop, and the performance of the pantograph slide. still needs to be further improved

At present, there are no patents or documents at home and abroad that improve the performance of pantograph slides by preparing conductive and wear-resistant composite coatings.

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