Railway vehicle bogie damper wedge fitting

A kind of railway vehicle and damper technology, which is applied to railway car body parts, bogies, devices for lateral relative movement between the underframe and the bogie, etc., and can solve problems such as affecting the performance of the bogie.

Pending Publication Date: 2022-08-02
NATIONAL STEEL CAR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is likely to affect the performance of the bogie, which is undesirable
[0007] Considering the inconvenience of changing friction damper wedges too frequently or at unexpected intervals, variations between damper wedges, changes in ride performance, and wear pads caused by such changes Changes in lifespan present challenges

Method used

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  • Railway vehicle bogie damper wedge fitting
  • Railway vehicle bogie damper wedge fitting
  • Railway vehicle bogie damper wedge fitting

Examples

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Embodiment Construction

[0054] The following description, and the embodiments described therein, are examples of specific embodiments of the principles, aspects, or features of the present invention. These examples are only intended to illustrate the principles of the invention, not to limit them. In the description, the same components are designated by the corresponding same reference numerals in the description and the drawings. Unless otherwise stated, the drawings are considered to be drawn to scale.

[0055] The terms used in this specification are believed to have the same customary and ordinary meaning as understood by those of ordinary skill in the North American railroad industry. In this regard, Applicants incorporate by reference the rules and standards of the Association of American Railroads (AAR), a private agency that develops rules for the interchange operation of railcars in North America.

[0056] Furthermore, this specification often recites multiple synonyms for a single object...

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PUM

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Abstract

A damper wedge for a railway vehicle bogie is provided. The damper wedge has a friction member that rides on a wear plate of a side frame column of a railway vehicle bogie. The damper wedge block is provided with a non-metal abrasion surface; a spring seat engaged in use with a spring of the railway vehicle bogie; and a sloped damper wedge surface having a primary angle alpha and a secondary angle beta. The spring seat is provided with an axial center line. The inclined damper wedge surface has a curvature. The curvature has an operating point. The damper wedge has a reference plane perpendicular to the non-metallic wear surface and including the axial centerline. The axial centerline intersects the inclined damper wedge surface at an intersection point that is the center of the contact footprint. And the working point is positioned in a central area of the contact print or the working surface print.

Description

technical field [0001] The present invention relates to the field of damper fittings for bolsters of railway vehicle bogies. Background technique [0002] The ride quality problem of railway freight car bogies has persisted for many years. Previous attempts to address this problem can be found in WO 2005 005219 by Forbes and Hematian. As explained in this application, ride quality often involves subtle interrelationships of dynamic responses of multiple degrees of freedom at multiple reactive interfaces. [0003] The relationship between the automatic steering response at the interface between the bearing adapter and the sideframe bolster and the simultaneous roll motion at that interface, and the response at the interface between the bogie bolster and the sideframe all affect the overall Ride quality, damping of all these movements is provided by friction dampers. Most commonly, these dampers are in the form of triangular wedges mounted between the bolster and the sidefr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61F5/34
CPCB61F5/06B61F5/122
Inventor J.赫马蒂恩
Owner NATIONAL STEEL CAR
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