Friction disk for grounding device of high-speed train

Abstract

The invention relates to a friction disk for a grounding device of a high-speed train, and the friction disk comprises a friction disk body which is connected with a friction body. The surface of thefriction body is provided with a conductive wear-resistant coating layer. The friction plate body is provided with an inner cavity which is used for installing the friction body, and the inner cavityforms a stepped structure, wherein the lower part is provided with an internal thread and is a small cavity, and the upper part forms a big cavity. A side surface of the friction body forms a steppedstructure cooperating with the inner cavity, and the lower part of the side surface of the friction body is provided with an external thread and serves as a small shaft, wherein the upper part of theside surface forms a big shaft. The small shaft and the small cavity cooperate with each other to achieve the connection, and the big shaft and the big cavity cooperate with each other to achieve theconnection. Through the cooperation of the big shaft and the big cavity and the cooperation of the small shaft and the small cavity, the fastening connection between the friction disk body and the friction body is achieved, thereby guaranteeing the stability of the friction disk in an operation process. Moreover, the mode enables the friction body to have a small amplitude in the vibration process, thereby reducing the mechanical wear caused by the vibration, and prolonging the service life of the friction plate.

Description

technical field [0001] The invention relates to a friction disc for a high-speed rail grounding device, which belongs to the technical field of high-speed rail train components. Background technique [0002] The 27.5kV high-voltage electricity required for the operation of high-speed trains is obtained after power conversion by a circuit composed of the regional dedicated power supply network, catenary, EMU equipment, motors, rails, etc., that is, the principle of friction connection: regional dedicated power supply network Connect the catenary, the pantograph of the train laps the catenary to introduce electric energy into the electrical equipment and the input end of the motor in the car, and the output end of the motor is connected to the brush of the grounding device on the car, and the friction disc and the brush rotate in friction contact, friction The disc connects the axles, wheels, and rails, so that the rails are connected to the power supply network to form a loop...

AI Technical Summary

Problems solved by technology

[0003] Theoretically, if a closed circuit needs to be formed, the output end of the motor can be directly connected to the car body, that is, the current enters the axle, wheels, and rails through the bearings on the car body, but when this connection is made, the current will flow through the bearings, causing the bearings to suffer Galvanic corrosion, causing premature failure of valuable bearings

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