A pantograph damper damping throttling device

Abstract

The invention discloses a pantograph damper damping throttling device. One end of an oil cylinder is sealed through a guide bearing. A center hole is formed in the guide bearing which provides supporting and guiding for a piston rod. The other end of the oil cylinder is sealed through a bottom valve seat. A piston, a spring base, springs, a compression valve plate, an stretchable spring valve plate and a stop plate are installed on the piston rod. The oil cylinder is divided into a first cavity and a second cavity through the piston. Stretchable throttling holes and compression throttling holes are formed in the piston, wherein the stretchable throttling holes and the compression throttling holes are oppositely arranged. The compression valve plate located at the position, close to the end face of one side of the first cavity of the oil cylinder, of the piston covers the compression throttling holes and is pressed through the springs, and the springs are fixed on the spring base. The stretchable spring valve plate located at the position, close to the end face of one side of the second cavity of the oil cylinder, of the piston covers the stretchable throttling holes and is pressed through the stop plate, and the stop plate is fixed on the piston rod through a locking nut. The pantograph damper damping throttling device can overcome the technical defect that in the prior art, when the piston rod is stretched to the final stroke, damping force can not be adjusted and controlled at will.

Description

technical field [0001] The invention relates to a damping adjustment device, in particular to a pantograph damper damping throttling device applied to pantographs of rail transit vehicles such as electric locomotives and subway trains. Background technique [0002] The pantograph is an electrical component used to absorb energy from the catenary on rail vehicles such as electric locomotives and subway trains. It is a articulated mechanical component. It is installed on the roof of rail transit vehicles through insulators. After the pantograph head is raised, it collects current from the catenary, and transmits the current to the vehicle for use by the locomotive. The pantograph and its attached installation parts usually include: damper, bottom frame, bow lifting device, lower arm, bow assembly, lower guide rod, upper arm, upper guide rod, bow head and slide plate, and the damper is installed on the bottom frame and between the lower arms. The damper is an important part o...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the object of the present invention is to provide a pantograph damper damping throttling device, which overcomes the problem in the prior art that the damping force cannot be adjusted and controlled arbitrarily when the piston rod is stretched to the last stroke.

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