Three-degree-of-freedom hybrid pantograph based on double parallel mechanism

Abstract

The invention discloses a three-degree-of-freedom series-parallel pantograph based on a double-parallel mechanism. The pantograph comprises a base, a double-parallel supporting frame, longitudinal shock absorbers, safe pin shafts, sliding plate struts and sliding plates. A circular process hole is formed in the center of the base, and supporting insulators are arranged on four corners of the lower bottom surface of the base; the double-parallel supporting frame consists of a left parallel supporting frame, a right parallel supporting frame and a middle connecting plate, the left parallel supporting frame and the right parallel supporting frame are completely the same in structure, and two groups of the longitudinal shock absorbers are symmetrically and fixedly mounted on the middle connecting plate; and the safe pin shafts are made of nonmetal insulating materials, the lower ends of the safe pin shafts are fixedly connected with guide brackets, the upper ends of the safe pin shafts are fixedly connected with the sliding plate struts, and the sliding plates are connected with the sliding plate struts through screws. The pantograph can overcome the technical defects of the conventional pantograph, can realize the bearing and the shock absorption in three degree-of-freedom directions in a space, and can avoid the occurrence of safety accidents, such as the falling-off of the pantograph and damage of an overhead contact system, so that the structure stability of the pantograph and the adaptation to the overhead contact system are improved. Besides, the pantograph has the advantages of working stability, working reliability, convenient operation and maintenance and the like.

Description

technical field [0001] The invention relates to the field of electrical equipment for the operation of electric trains or locomotives, in particular to a three-degree-of-freedom hybrid vibration-damping pantograph based on a double-parallel mechanism and capable of damping vibrations in three directions in space. Background technique [0002] The pantograph, also known as the pantograph, is the electrical equipment for the electric locomotive to receive electric energy from the catenary, and is installed on the roof. As one of the key components of the electric locomotive, the pantograph plays a key role in the safe and stable operation of the vehicle at high speed. In high-speed train running, the requirements for the smoothness between the pantograph and the catenary are very high, and a slight error will easily lead to failure. Especially in the operation of the EMU, the pantograph is relied on to obtain power from the catenary to drive the locomotive forward. Once the t...

AI Technical Summary

Problems solved by technology

[0006] The traditional pantograph is limited by the inherent structure, the bow head mainly moves in the vertical direction, and only the preload and the buffer device for vibration reduction are set in the vertical direction, but there is no vibration reduction in the forward direction and lateral direction of the vehicle device

In addition, the existing pantograph is not equipped with a bow head separation device. When pantograph-catenary scraping occurs, the scraper on the bow head cannot be disengaged, which may easily lead to pantograph-catenary scraping accidents

The existing pantograph not only has poor structural stability, but also seldom considers the protection measures when the lateral force and the pantograph-catenary scrape, and there are certain safety hazards

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