Active radial system for rail train

Abstract

The invention relates to an active radial system for a rail train. The active radial system comprises a train level controller, a line information measuring unit, train control positive displacement servo controllers and action executing units. Train bodies of the rail train are each provided with one train control positive displacement servo controller and four action executing units connected with the train control positive displacement servo controller, and the four action executing units are symmetrically arranged on the two sides of a front bogie and the two sides of a rear bogie of each train body correspondingly. The line information measuring unit is arranged on the head train body. The line information measuring unit, the train control positive displacement servo controllers and a fault guiding safety unit are all connected to the train level controller, and the train level controller controls the system to work in a precise type autonomous control mode, in a precise type dependency control mode and in a head train guiding type autonomous control mode. According to the active radial system for the rail train, compared with the prior art, the speed of the rail train passing a curve on an existing line can be increased, the operating efficiency is improved, and meanwhile a fault guiding safety function is achieved.

Description

technical field [0001] The invention relates to a rail train radial system, in particular to an rail train active radial system. Background technique [0002] There are many small-radius curves on the existing lines of urban rail transit. When the traditional bogies used in urban rail transit pass through small-radius curves, the wheel flanges are close to the rails, and the lateral force of the wheels and rails is very large. There is serious wheel and rail wear and tear. Howling noise is generated, and in extreme cases, the bogie may derail. Therefore, for safety reasons, the vehicle must also slow down when passing a curve, which will reduce the operating efficiency of the vehicle. At the same time, for the traditional railway vehicle bogie, its serpentine stability and curve passability are a pair of contradictions. While improving the curve passability of the bogie, it is bound to reduce the serpentine stability of the bogie. Therefore, this problem cannot be solved f...

AI Technical Summary

Problems solved by technology

[0002] There are many small-radius curves on the existing lines of urban rail transit. When the traditional bogies used in urban rail transit pass through small-radius curves, the wheel flanges are close to the rails, and the lateral force of the wheels and rails is very large. There is serious wheel and rail wear and tear. Produces howling noise, which can cause bogie derailment in extreme cases

Therefore, for safety reasons, the vehicle must also slow down when passing the curve, which will reduce the operating efficiency of the vehicle

At the same time, for the traditional railway vehicle bogie, its serpentine stability and curve passability are a pair of contradictions. While improving the curve passability of the bogie, it is bound to reduce the serpentine stability of the bogie

Therefore, this problem cannot be solved fundamentally by changing the parameters of the bogie system

[0003] In order to solve this kind of problem, the patent CN201151401Y proposes a self-guiding device suitable for passenger car bogies, which couples the front and rear wheel pairs of the bogie through a set of linkage mechanisms, so that the wheels tend to be radial on the curve, but the radial The direction effect is limited, so that the lateral force between the wheel and the rail can be slowed down to a limited extent. When the vehicle passes through the curve, it needs to be properly decelerated, and the vehicle operation efficiency is not very high.

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