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High-performance railway wagon swing bolster structure and bogie

A high-performance technology for railway wagons, applied in the direction of bogies, railway car body parts, devices for lateral relative movement between the underframe and the bogie, etc., can solve problems affecting the service life of bogie bolsters, and improve the use of Life, eliminate end point oscillation, solve the effect of sudden high amplitude

Active Publication Date: 2021-02-26
CRRC YANGTZE TONGLING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] During the running of the existing railway freight cars, due to the existence of gaps between the rails, high- and low-frequency vibrations with large amplitudes are likely to occur. In addition, a large number of small-amplitude vibrations will also be generated between the wheels and the rails during the running of the railway freight cars. High and low frequency vibrations, if the above high and low frequency vibrations are not dealt with, high frequency vibrations are not attenuated, and low frequency resonance interference is suppressed, it will affect the service life of bogies and bolsters

Method used

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  • High-performance railway wagon swing bolster structure and bogie
  • High-performance railway wagon swing bolster structure and bogie
  • High-performance railway wagon swing bolster structure and bogie

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Such as Figure 3-8 As shown, the high-performance railway freight car bolster structure includes a bolster body 10, and the middle section of the bolster body 10 is provided with a plurality of first channels 11 arranged along the width direction of the bolster body 10, and the first The channel 11 is filled with a first vibration damping unit 20; the two ends of the bolster body 10 are respectively provided with a second channel 12 arranged along the width direction of the bolster body 10, and the second channel 12 is filled with a second Vibration damping unit 30.

[0047] Further, the first channel 11 includes a sinusoidal first through-hole section 111, and the two ends of the first through-hole section 111 are respectively provided with second through-hole sections 112 parallel to the width direction of the bolster body 10. , the first end of the second through hole section 112 communicates with the end of the first through hole section 111 , and the tail end of ...

Embodiment 2

[0052] Based on Embodiment 1, the first non-Newtonian fluid-filled region 21 and the second non-Newtonian fluid-filled region 31 are filled with non-Newtonian fluid fillers, and the preparation method of the non-Newtonian fluid fillers is as follows:

[0053] Mix and react 4,4'-diaminodiphenyl ether, dimethylacetamide and pyromellitic dianhydride at a mass ratio of 1:(1.5-2):(7-9) to prepare a polyamic acid solution , mix and stir the polyamic acid solution, methyl silicone oil and azobisisobutyronitrile according to the mass ratio of 100:(15-22):(2.1-2.3) and react at a temperature of 79-88°C for 2-3h, Nitrogen gas was introduced during the reaction process; after that, the temperature was raised to 105-110°C and the reaction was stirred for 30 minutes, and a new product was obtained after cooling to room temperature. The non-Newtonian fluid filler was obtained after the new product was placed at room temperature for 10 days.

[0054] Preferably, 4,4'-diaminodiphenyl ether, d...

Embodiment 3

[0061] Bolster Vibration Test Experiment

[0062] The speed of the railway freight car is 100km / h, the vibration signal is collected by the acceleration sensor installed at the bolster in the bogie, and the sampling frequency is 10kHz; the original vibration signal is decomposed by the EEMD method to obtain the IMF component, and the effective IMF component is selected for The signal is reconstructed to obtain the corresponding vibration signal spectrum.

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Abstract

The invention relates to a high-performance railway wagon swing bolster structure and a bogie, the high-performance railway wagon swing bolster structure comprises a swing bolster body, the middle section of the swing bolster body is provided with a plurality of first channels arranged in the width direction of the swing bolster body, and the first channels are filled with first vibration attenuation units; the two ends of the swing bolster body are each provided with a second channel arranged in the width direction of the swing bolster body, and the second channels are filled with second vibration attenuation units. By arranging the first vibration attenuation unit and the second vibration attenuation unit, high-frequency vibration can be effectively attenuated, low-frequency resonance interference can be inhibited, the defect that the main frequency amplitude of an existing waveform is suddenly high is overcome, therefore, the problems of endpoint oscillation and aliasing of the areawhere the swing bolster is located can be solved, and finally the service life of the swing bolster can be effectively prolonged.

Description

technical field [0001] The invention relates to a high-performance railway freight car bolster structure and a bogie, belonging to the technical field of railways. Background technique [0002] As an important part of the rail vehicle, the bogie is used to carry the vehicle, provide traction, damping, and guide, and the power bogie is also used to provide the power to drive the rail vehicle forward. [0003] The bogie is one of the most important components in the rail vehicle structure, and its main functions are as follows: [0004] 1) The use of bogies on vehicles is to increase the load, length and volume of vehicles, and to increase the speed of trains, so as to meet the needs of railway transportation development. [0005] 2) To ensure that under normal operating conditions, the car body can be reliably seated on the bogie, and the rolling of the wheels along the rail is converted into translational motion of the car body running along the line through the bearing dev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61F5/12
CPCB61F5/127
Inventor 姚庆吴文兵张昕杨馨怡周建强陈云霞王明陈祖华李解华
Owner CRRC YANGTZE TONGLING CO LTD
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