Testing method of railway vehicle flexibility coefficient

A technology of flexibility coefficient and test method, applied in the direction of railway vehicle testing, etc., can solve the problems of high risk coefficient, easy to produce errors, large deviation, etc., and achieve the effect of accurate test results, short time period and easy implementation.

CN103698139AActive Publication Date: 2014-04-02CRRC QINGDAO SIFANG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2014-04-02

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Abstract

The invention relates to a testing method of a railway vehicle flexibility coefficient, which particularly comprises the following steps that A, a to-be-tested train is placed on test platforms; B, counterweight equipment with corresponding weight is placed in the train according to a test requirement, so that a train body of the train reaches a test required state requirement; C, a plumb is hung above the center of an end plane of the tested train; marking is performed; D, vertical shock excitation devices, transverse shock excitation devices and longitudinal shock excitation devices which are below the test platforms are controlled, so that top plates of the test platforms form a gradient, and the front and rear test platforms generate a certain distance in a transverse direction; height differences between the left sides and the right sides of the surfaces of the test platforms are recorded; an angle delta formed by the test platforms in left and right directions is calculated; an angle eta formed between a plumb line hung above the end surface of the train and a position marked in Step C is measured; and E, the flexibility coefficient under an operating condition is obtained by dividing of the angle eta and the angle delta which are measured in Step D. The method can simulate various slopes according to actual conditions, is low in cost and high in efficiency, and can test for different rail conditions and different vehicle states.
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Description

technical field

[0001] The invention relates to a method for testing the flexibility coefficient of rail vehicles, belonging to the technical field of rail vehicle manufacturing. Background technique

[0002] Since April 1997, China's railways have carried out six large-scale speed increases. By July 1, 2010, China has officially entered the era of high-speed rail, and the fastest speed of high-speed rail can reach 322km / h.

[0003] With the development of railway transportation, the speed of trains is getting higher and higher. In order to ensure the high-speed passage of trains and tunnels, as well as the comfort of passengers, in order to solve the problems caused by the high-speed vehicles, the vehicles are installed The anti-roll torsion bar device ensures the ability of the vehicle to pass through curves and tunnels at high speed. To verify the anti-rolling ability of the vehicle is measured by the vehicle's own flexibility coefficient. In the vehicle design, the esta...

Examples

Embodiment approach

[0051] The specific implementation method is:

[0052] 1) Control the two vertical actuators 9 below the test platform 1 so that the four vertical actuators 9 below the front and rear test platforms 1 maintain the same height. Record the height difference between the left and right sides of the surface of the test platform 1, and calculate the angle δ formed by the test platform 1 in the left and right direction. Measure the angle η formed by the hanging plumb line above the surface of the end of Train 2 and the location marked in Step 3.

[0053] 2) Control the two vertical actuators 9 below the front end test platform 1, so that one vertical actuator 9 moves upward for a certain distance, the other vertical actuator 9 keeps its position unchanged, and the rear end test platform 1 Two vertical actuators 9 below also keep the position unchanged. Record the height difference between the left and right sides of the surface of the test platform 1, and calculate the angle δ form...