Pantograph head

Abstract

The invention discloses a pantograph head. The pantograph head comprises a supporting structure, a roller structure, a connecting structure and a transverse alignment spring, wherein the roller structure can be in contact with a contact line to achieve the breakover with the contact line and can roll around the axial direction of the contact line; the connecting structure is connected with the roller structure and the supporting structure and enable the roller structure to move on the supporting structure around the radial direction of the contact line; and the transverse alignment spring is arranged on the supporting structure and can apply elastic force to the roller structure, so that the roller structure moves on the radial direction of the contact line and is aligned with the contactline again. According to the pantograph head, the sliding friction of a sliding plate and contact line of the pantograph head is avoided both laterally and longitudinally, the current receiving effectamong bow nets is significantly improved, the maintenance and the repair are simultaneously convenient, the maintenance cost is reduced, and the alignment between the contact line and the pantographhead can be better achieved.

Description

technical field [0001] The invention relates to the technical field of electric traction locomotives, in particular to a pantograph head of electric traction locomotives. Background technique [0002] At present, the pantograph-catenary current collection method of electric traction locomotives (including subways, trams, etc.) is to realize the current collection through the sliding contact between the sliding plate of the pantograph head and the contact wire. The catenary is a fixed device, the locomotive is a mobile device, and the pantograph is fixed on the locomotive. Due to the movement of the locomotive, there is always a longitudinal (traveling direction of the locomotive, which is also the axial direction of the contact line) relative to the contact line of the sliding plate and the catenary. Sliding, at the same time, due to the influence of the locomotive’s lateral (mainly referring to the left and right direction of the locomotive, but also the radial direction of...

AI Technical Summary

Problems solved by technology

The local unevenness of the skateboard intensifies the dynamic effect between the pantograph and catenary, that is, when the skateboard and the contact line slide relative to each other, impact phenomena such as jumping and offline between the pantograph and catenary are likely to occur at the local concave and convex defects of the skateboard, resulting in arc discharge between the pantograph and catenary, thus Cause arc arc wear, under the dual effects of mechanical friction wear and arc arc wear, it will aggravate the local unevenness of the skateboard and the wear of the contact line and the skateboard, so that the quality of the pantograph-catenary flow drops sharply, and the pantograph-catenary flow relationship deterioration

Especially when the locomotive encounters situations such as meeting cars or passing through a tunnel, it will have a strong impact on the pantograph, which is likely to cause severe lateral shaking of the skateboard. Under such a strong impact, the contact line and the skateboard often cannot fully move horizontally. Restoring the centering due to exercise may cause a large lateral slide or even disengagement of the pantograph-catenary, which seriously affects the pantograph-network relationship

[0004] The application experience of the skateboard shows that the mechanical friction and wear between the pantograph and catenary accounts for 20% of the wear of the skateboard, while the arcing wear between the pantograph and catenary accounts for 80% of the wear of the skateboard. For subway lines using rigid catenary, every other The skateboard needs to be polished every month, and the skateboard needs to be replaced every 6 months, which causes great inconvenience to the operation, maintenance and overhaul of the locomotive, and leads to high maintenance costs

Images