Bow head rotating shaft hinged structure and pantograph bow head

Abstract

The invention discloses a hinging structure of a pantograph head rotating shaft. The hinging structure comprises a connecting shaft and the pantograph head rotating shaft, wherein the pantograph head rotating shaft comprises a hollow first pipe and upper arm rod connecting seats; the upper arm rod connecting seats are symmetrically distributed at two ends of the first pipe and fixedly connected with an upper arm rod; a ball joint is mounted in each of the upper arm rod connecting seats in a sleeving manner; from one end of the first pipe, the connecting shaft sequentially penetrates through one of the ball joints and a hollow cavity of the first pipe, and penetrates out of the ball joint at the other end of the first pipe; and each of the two ends of the connecting shaft and the corresponding upper arm rod connecting seat are relatively fixed. According to the hinging structure disclosed by the invention, the ball joints are adopted as pantograph head rotating movement components, so that the rotating friction is low, the rotating movement is flexible, the hinging structure has high site application reliability, and the purpose that the pantograph head is horizontal is well guaranteed.

Description

Technical field [0001] The invention belongs to the pantograph technology, and specifically relates to a hinged structure of a bow head shaft and a pantograph bow head. Background technique [0002] The pantograph collects current during the operation of the rolling stock, and the pantograph head slide plate is in direct contact with the contact wire, and the current is conducted downward from the slide plate and introduced into the vehicle. During the lifting and lowering process of the pantograph, the bow head is restrained by the upper four-bar mechanism of the pantograph to ensure that the pantograph head remains level during the lifting and lowering process. [0003] In order to ensure the level of the bow head, the hinged structure of the bow head shaft and the upper arm rod should be able to rotate flexibly. However, the hinged structure in the prior art has a large rotating friction force and the rotating action is not flexible enough, such as figure 1 In the hinged structu...

AI Technical Summary

Problems solved by technology

[0003] In order to ensure the level of the bow head, the hinge structure of the bow head shaft and the upper arm should be able to rotate flexibly. figure 1 In the hinged structure of the bow head shaft shown, the friction between the upper arm rod connecting seat 5 and the shaft 11 is large, and there will be a phenomenon of slow follow-up during mutual rotation, resulting in the tilt of the bow head. The reason is the hinge Unreasonable structural design

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