Locomotive grounding structure

Abstract

The invention discloses a locomotive grounding structure, wherein a conductive grounding circuit is formed by a track and a grounding terminal of a main circuit of a locomotive through wheels, wheel shafts, a copper seat, an axis touching cone and a flexible wire; the axis touching cone in an insulation end cover is connected with the copper seat due to the conical embedded sliding friction between the axis touching cone and the copper seat, so that the loss of the sliding friction is lowered to a maximum extent, i.e., the service life of the device is prolonged greatly; the axis touching cone can follow the wheel shafts to move in six freedom degrees in the sliding friction touching process, so that the eccentric abrasion and the rigid damage of the axis touching cone are avoided effectively, and the reliability of the device is improved greatly; a friction loss indicating scale is mounted on the insulation end cover to reflect the abrasion situation of the axis touching cone, so that the axis touching cone can be replaced in time, and good working state of the device is ensured. The grounding device can be used for the modification of the locomotive and can also be used for the manufacturing of a new locomotive. As a result, the project amount is small and the cost is low.

Description

Technical field [0001] The invention mainly relates to a rolling stock, especially a grounding device for an electrified railway and an urban rail transit rolling stock. Background technique [0002] At present, in order to maintain a smooth electrical connection between the wheels of electrified railways and urban rail transit rolling stock, the track and the ground, grounding devices are usually installed on the car body or bogie of the rolling stock to avoid the traction current of the main circuit of the rolling stock. The electric erosion of the bearing caused by the rolling bearing of the wheel directly flowing into the track for a long time and the resulting bearing damage and bogie shaft holding accident. This grounding device is divided into two types: radial and axial. For this reason, people have made many improvement efforts, such as the circular friction disc at the axle top of Chinese patent ZL200701017359; the axially derived structure of ZL022332227. Althou...

AI Technical Summary

Problems solved by technology

Although the existing radial grounding device has a relatively simple structure, it wears against the brush at a linear speed during use, and the wear is large, which easily leads to poor contact or even grounding failure. The diameter of the contact friction plate of the axial grounding device is relatively large. Wear and tear is still high, and the two grounding devices often have problems such as rigidity damage during rolling stock shaking due to the lack of elastic buffer structure or insufficient degree of freedom of elastic buffering; in addition, these two grounding devices are not intuitively understood by the outside And the function of judging its internal use, once the grounding device fails, it will cause electric corrosion of the rolling bearing, and even cause the bogie to lock the axle in severe cases, affecting driving safety

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