Pure rolling contact structure with low noise and low abrasion loss for rail transit wheel and guiding rail

Abstract

The invention discloses a pure rolling contact structure with low noise and low abrasion loss for a rail transit wheel and a guiding rail. The pure rolling contact structure comprises column-shaped wheels (7) and rolling guiding components (6), wherein, the outer round surfaces of the column-shaped wheels (7) are in contact with the upper surface of the guiding rail; the rolling guiding components (6) are assembled on a bracket (17) fixedly connected with a vehicle chassis and/or a wheel shaft; and the rolling guiding components (6) are in rolling contact with the inner side surfaces of the guiding rail. In the invention, the sliding contact between the wheels and the guiding rail is changed into the rolling contact, so that the structure is safer, and beneficial to overcome the defects such as high noise, high abrasion and the like in the existing contact manners.

Description

technical field [0001] The invention relates to the technical field of mechanical engineering of transportation, in particular to a guide contact structure of rail traffic, in particular to a pure rolling contact structure of rail traffic wheels and guide rails with low noise and less wear. Background technique [0002] Although the train has a long history, from the original steam engine and internal combustion engine to today's electric train and subway, the contact methods between these rail transport vehicles and the track are as follows: figure 1 The structure shown is that the steel I-shaped guide rail 2 is used to contact the wheel 3 with the wheel flange 4, wherein: the I-shaped guide rail 2 is fixed on the sleeper 1 by bolts; the outer edge surface of the wheel 3 is in contact with the I-shaped The guide rail 2 contacts, and the wheel flange 4 snaps into the inner side of the I-shaped guide rail 2 to play a guiding role and prevent the vehicle from derailing during ...

AI Technical Summary

Problems solved by technology

[0005] 1. The noise is loud: especially when the vehicle is turning, it is especially prominent in the relatively closed environment of the subway

[0006] 2. Greater wear and tear: the inner side of the I-shaped guide rail 2 and the side of the wheel flange 4 are worn

In fact, the wheel 3 and the wheel flange 4 are an integrated structure, that is, a part; if the wheel flange 4 is worn out, the entire wheel will be scrapped; and the wear of the guide rail will also cause the maintenance and replacement of the guide rail itself

[0007] 3. Poor comfort: the inner surface of the I-shaped guide rail 2 is in contact with the wheel flange 4 to generate shock and vibration, which makes the cabin vibrate

[0008] 4. High energy consumption: This kind of sliding friction is a typical internal friction, and the power consumed is not used for acceleration

[0009] 5. Poor safety: the space between the inner sides of the two I-shaped guide rails 2 is large and small, and there is a possibility of derailment

Images