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Damping and damper selection method for reducing wheel tread failure in rail transit

A technology for wheel tread and rail transportation, which is used in railway car body parts, bogies, axle box installation, etc.

Active Publication Date: 2017-05-17
TANGZHI SCI & TECH HUNAN DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, "a method of damping and damper selection to reduce the failure of rail transit wheel treads" is proposed to solve this problem

Method used

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  • Damping and damper selection method for reducing wheel tread failure in rail transit
  • Damping and damper selection method for reducing wheel tread failure in rail transit
  • Damping and damper selection method for reducing wheel tread failure in rail transit

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Embodiment Construction

[0055] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0056] A damping and damper selection method for reducing rail traffic wheel tread faults is characterized in that the absolute value of the damping force F is selected to a positive nonlinear damper with a constant or increasing coefficient of change rate of the absolute value of the vibration velocity V; When the vibration damping object is damped when the polarity of the vibration velocity V is positive or negative, the polarity of the damping force F is always opposite to the polarity of the vibration velocity V, replacing the existing positive polarity of the vibration velocity V Satisfy the rate of change of the absolute value of the damping force F to the absolute value of the vibration velocity V is constant, but when the vibration velocity V is negative, the rate of change of the absolute value of the damping force F to the absolute v...

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Abstract

The invention discloses a damping and damper selection method for reducing wheel tread failures in rail transit. A positive non-linear damper is selected, wherein the change rate of the absolute value of damping force F of the positive non-linear damper to the vibration velocity absolute value V is a constant or a progressive increase coefficient; when a damping object is subjected to positive or negative damping relative to the polarity of the vibration velocity V, the polarity of the generated damping force F is always opposite to the polarity of the vibration velocity V. The damping and damper selection method has the advantages that persistent wheel vibration and persistent wheeltrack impact caused and induced by accidental wheeltrack impact can be reduced effectively, vibration amplitude and impact frequency of wheeltrack resonance can be reduced, and accordingly, wheel damage caused by accidental impact is inhibited effectively; particularly, damage 'duplication' caused by induced continuous impact is inhibited, and occurrence and quick development of polygon out-of-round is also inhibited; a solution is provided for solving blindness in current damper selection and damping methods as well as solving the wheel tread failures and the polygon out-of-round which occur frequently in China's rail transit.

Description

technical field [0001] The invention belongs to the technical field of safety protection and reliability design of rail transit vehicle wheels, rails and vehicle frames, and relates to a damping method for reducing tread faults of rail transit wheels and a damper selection method. Background technique [0002] Among the newly emerging railway locomotives, vehicles, subways, and high-speed rail vehicles in the past ten years, there have been a large number of serious wheel faults on certain models, including polygonal out-of-round, which is almost rare before, and even caused rail corrugation faults. The vibration caused by the wheel and rail faults during the operation of the vehicle not only endangers the wheels and rails themselves, but also causes the wheel noise reduction plates, axle box bearings, primary springs, bogies, and other components of the vehicle running part to be installed on the steering wheel. The mounting bracket on the rack has failed. Through various ...

Claims

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Application Information

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IPC IPC(8): B61F5/30
CPCB61F5/308
Inventor 唐德尧李修文
Owner TANGZHI SCI & TECH HUNAN DEV CO LTD
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