Oblique wedge vibration damper for railway freight car bogie

The technology of a vibration damping device and a bogie is applied to the devices, bogies, railway car body parts, etc. that move laterally between the underframe and the bogie, and can solve the problem of unsprung mass overweight, complex structure, and manufacturing and maintenance costs. Advanced problems, to achieve the effect of large anti-rhombic deformation ability, large anti-rhombic stiffness, excellent dynamic performance

Active Publication Date: 2010-09-15
CRRC YANGTZE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the structure of adding a cross support device or a spring support plate is relatively complicated, the unsprung mass is heavy, and the manufacturing and maintenance costs are also relatively high.

Method used

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  • Oblique wedge vibration damper for railway freight car bogie
  • Oblique wedge vibration damper for railway freight car bogie
  • Oblique wedge vibration damper for railway freight car bogie

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Experimental program
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Embodiment Construction

[0017] The wedge damping device of the railway freight car bogie of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments:

[0018] like figure 1 and figure 2 As shown, the wedge damping device of the railway freight car bogie is mainly composed of a wedge component 1 and a damping spring component 2 installed under the wedge component 1 . The wedge assembly 1 is composed of a wedge body 1b, a primary friction plate 1a arranged on the lateral surface of the wedge body 1b, and a secondary friction block 1c arranged on the inclined surface of the wedge body 1b. The structural design parameters of the wedge composition 1 above satisfy the following mathematical relationship: L=200-260mm, α=16-30°, and μ1 ; Among them, L is the width of the wedge composition 1, α is the angle between the friction surface of the secondary friction block 1c and the vertical surface, μ is the friction coefficient of th...

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Abstract

The invention discloses an oblique wedge vibration damper for a railway freight car bogie. The vibration damper comprises an oblique wedge part and an anti-vibrating spring component arranged below the oblique wedge part; the oblique wedge part consists of an oblique wedge body, a main friction plate and an auxiliary friction block; the main friction plate is arranged on the side vertical surface of the oblique wedge body; the auxiliary friction block is arranged on the inclined plane of the oblique wedge body; the structural design parameter of the oblique wedge part meets the following mathematic relation: alpha is equal to 16 to 30 degrees, and tg alpha is more than mu and less than mu+mu1; alpha is an included angle between the rubbing surface of the auxiliary friction block and a vertical plane; mu is the friction coefficient of the main friction plate; mu1 is the friction coefficient of the auxiliary friction block. The vibration damper has the advantages of simple and reliable structure, convenient maintenance and repair, low using cost and capability of resisting rhombic deformation between a swing bolster part and a side frame part. Therefore, the bogie has enough diamond resistant rigidity, excellent dynamic performance and curve passage capacity, is suitable for a novel railway truck with a speed of 120 kilometers per hour and meets the requirement on large scale speed increase of the railway truck.

Description

technical field [0001] The invention relates to a railway freight car bogie, in particular to a wedge damping device for a railway freight car bogie. Background technique [0002] Railway freight car bogies are key components of railway freight cars. Most of the traditional railway freight car bogies consist of two side frames and a bolster. The pedestals at both ends of the side frame are installed on the front and rear wheel sets through bearing saddles and bearings. The bolster The two ends of the composition are installed in the central box formed by the side frames through two sets of central spring suspension devices. The central spring suspension device is used to bear the load composed of the bolster, which is mainly composed of the load spring assembly in the middle and the friction wedge damping device on both sides. The existing friction wedge damping device includes a wedge and a damping spring assembly installed under the wedge. The vertical main friction surf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61F5/06F16F15/04
CPCB61F5/122
Inventor 孙明道徐勇王宝磊肖光毅
Owner CRRC YANGTZE CO LTD
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