JPH04172901A - Double stage link type pantograph inclining system for rolling stock - Google Patents

Abstract

PURPOSE:To ensure a required moving amount by employing a double stage link mechanism for supporting a pantograph, extending the link into the body and additionally providing a deadweight at the lower end of the link, thereby taking advantage of excessive centrifugal force functioning on both the pantograph and the deadweight at the time of traveling on a curve. CONSTITUTION:A pair of links 3 are provided, while being supported at two points, in a body 2 and a deadweight 4 is fixed to the lower end of the link 3. The link 3 and the deadweight 4 are disposed symmetrically in the center of the body 2 where the links 3, disposed on the opposite sides, are coupled through a support 5 above the body 2 and a pantograph 1 is disposed in the center of the support 5. According to the constitution, the pantograph 1 moves oppositely to the inclination of the body 2 when the body 2 inclines inwardly at a curve and thereby relative movement of collector shoe and stringing is suppressed in lateral direction. Furthermore, the link 3 is provided with a damper 6 for absorbing transient vibration in order to suppress unnecessary lateral movement due to incorrect track.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a railway vehicle equipped with a car body tilting device, and particularly for safely supplying driving power when speeding up on a line section with many curves with a small radius. The present invention relates to a vehicle pantograph tilting device.

(Prior Art) An example of a conventional pantograph tilting device for a vehicle will be explained with reference to FIG. FIG. 2 is a front view of a conventional pantograph tilting device. In the figure, the pantograph l is supported by a link 7, and an air cylinder 9 that operates according to the output of a control device 8 that outputs curve information operates the link, forcing the pantograph in the opposite direction to the direction in which the vehicle body leans when traveling on a curve. It was intended to be moved. In this method, it is not possible to make the link too large due to the vehicle limit, so it may not be possible to secure a sufficient amount of relative movement between the vehicle and the overhead wire in the left/right direction, or if control fails. There were problems such as the risk of pantographs damaging overhead wires.

(Problem II to be Solved by the Invention) A method for solving the above-mentioned problem of the pantograph tilting device for a vehicle is to make the link supporting the pantograph as long as possible and create a link configuration that is advantageous to the vehicle limit, and when traveling on a curve. We decided to use a method that would ensure the necessary amount of relative movement between the vehicle and the overhead wire in the left and right directions, while at the same time avoiding a control system that could fail.

(Means for solving the problem) The link that supports the pantograph has a two-stage link structure,
In order to make the link as long as possible, the link is extended to the inside of the car body, and dead weight is added to the bottom end of the link, thereby making use of the excess centrifugal force that acts on both the pantograph and the dead weight when driving around curves. The structure is designed to ensure the necessary amount of movement.

In this way, by adopting a structure that also utilizes the centrifugal force acting on the pantograph, it is also possible to reduce the dead weight. Additionally, by utilizing natural forces such as excess centrifugal force, the risk of failout in forced control systems is eliminated.

(Example) An example of a two-stage link type pantograph tilting device according to the present invention will be described with reference to FIG. FIG. 1 is a front view of the two-stage link type pantograph tilting device of the present invention. In FIG. 9, the same reference numerals as in the conventional example indicate the same members. A pair of links 3 supported at a point are provided, and a dead weight 4 is attached to the lower end of the link. In addition, this link and dead weight are arranged symmetrically with respect to the center of the car body, and at the same time, the links placed on both sides of the car body are connected by a cradle 5 at the top of the car body, and a pantograph 1 is installed in the center of the cradle. . With such a mechanism, the pantograph 1 moves in the same direction as the horizontal movement of dead weight due to centrifugal force. That is, when the vehicle body tilts inward in a curve, the pantograph moves in the opposite direction to the vehicle body tilt, so it is possible to reduce the amount of relative movement between the collector boat and the overhead wire in the left-right direction.

Furthermore, a damper 6 is attached to the link in order to absorb transient vibrations, and the structure is designed to reduce unnecessary movement in the left and right directions due to irregularities in the track.

(Effects of the Invention) The two-stage link type pantograph tilting device of the present invention can secure the amount of movement in the left and right direction of the pantograph necessary to safely supply driving power when traveling on curves, and also prevent excessive centrifugal force. By utilizing natural forces, troubles caused by forced control systems can be eliminated, resulting in a low-cost device.

[Brief explanation of the drawing]

FIG. 1 is a front view of a two-stage link type pantograph tilting device of the present invention, and FIG. 2 is a front view of a vehicle employing a conventional pantograph tilting device. 1... Pantograph, 2... Vehicle body, 3... Link, 4... Dead weight, 5... Rest, 6... Damper, 7...
...Sink, 8...vIIi control device, 9...Air cylinder. Patent applicant: Railway Technology Research Institute No. 2rE
J

Claims (1)

[Claims] When a railway vehicle equipped with a car body tilting device tilts inward while traveling on a curve, a mechanism that combines the two-stage link and dead weight of the vehicle pantograph reduces the dead weight and excess centrifugal force acting on the pantograph. 1. A pantograph tilting device for a vehicle, characterized by having a mechanism for tilting the pantograph outward in a curve to reduce the amount of relative movement in the left-right direction between the collector boat of the pantograph and the overhead wire.