Rail transit vehicle and vehicle end jumper cable length calculation method thereof

Abstract

The invention discloses a rail transit vehicle and a vehicle end jumper cable length calculation method thereof. The jumper cable length L meets the following relational expression: L is greater than L1 and less than L2; wherein L1 is the length of the jumper cable calculated according to the maximum linear distance Y of the mounting surfaces of the two vehicle end connectors, and L2 is the length of the jumper cable calculated according to the minimum linear distance y of the mounting surfaces of the two vehicle end connectors. The method can be suitable for various lines with different parameters and is high in universality and operability, the length value, calculated through the method, of the jumper cable is reliable and high in accuracy, potential safety hazards of vehicle operation caused by the improper length of the cable can be effectively avoided, and important reference and application value are provided for calculating the length of the jumper cable between rail transit vehicles.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to a rail transit vehicle and a method for calculating the length of a jumper cable at a vehicle end thereof. Background technique [0002] As an important part of the electrical connection between vehicles, the jumper cable at the vehicle end directly determines the function realization of each system of the vehicle and the safety and reliability of the train operation. Different operating line conditions have different requirements for the length of jumper cables. Too long or too short jumper cables will bring safety hazards to train operation. At present, the determination of the length of jumper cables at the end of rail transit vehicles is still unclear There is no universal calculation method, and the test bench is used to simulate various operating conditions of the vehicle, and combined with previous project experience, etc., to finally obtain a suitable value. Therefo...

AI Technical Summary

Problems solved by technology

like figure 1 As shown, if the cable is too long, it will exceed the limit requirement of the vehicle when it is compressed and sagging, which will easily lead to wear and tear between the cable and the track; figure 2 As shown, if the cable is too short and subjected to excessive tension, the connector plug at the end of the cable is easy to fall off or even structurally damaged, both of which will affect the electrical performance of the vehicle

[0004] The prior art (such as CN106650235A) provides a calculation method for the length of the jumper cable. This type of calculation method is based on the catenary equation and mainly calculates the length of the jumper cable from the perspective of mathematical theory. This type of method does not consider the above two The effect of these conditions on the electrical performance of the vehicle

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