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A vibration damping device for rail trains

A vibration damping device and mandrel technology, applied in the field of rail trains, can solve problems such as limited vibration energy dissipation capacity, decreased dynamic stiffness, and small damping of rubber materials, so as to increase the fluid damping effect, improve the stability of dynamic stiffness, Improve the effect of shock absorption and energy dissipation

Active Publication Date: 2020-08-21
ZHUZHOU TIMES NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the speed of the railway increases and the load increases, due to the limitations of the rubber material, the dynamic stiffness of the rubber conical spring decreases with the increase of the frequency, and there is a phenomenon of high-frequency dynamic softening; at the same time, the damping of the rubber material is small , limited ability to dissipate vibrational energy
The limitations of traditional rubber conical springs are becoming more and more obvious

Method used

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  • A vibration damping device for rail trains
  • A vibration damping device for rail trains
  • A vibration damping device for rail trains

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the drawings.

[0032] figure 1 with figure 2 Both show the damping device 100 according to the present invention. Such as figure 1 with 2 As shown, the vibration damping device 100 includes a housing element 1, a mandrel assembly 2 and a spring element 3. Wherein, the housing element 1 has a closed liquid storage cavity 11 for storing liquid. The mandrel assembly 2 is arranged in the liquid storage cavity 11, and the lower end of the mandrel assembly 2 passes through the elastic bottom wall of the housing element 1 and extends downward. The spring element 3 is wrapped on the outer wall of the mandrel assembly 2 and located in the liquid storage chamber 11 to divide the liquid storage chamber 11 into an upper liquid chamber 12 and a lower liquid chamber 13. In addition, a fluid channel 4 is provided on the mandrel assembly 2 for communicating the upper liquid cavity 12 and the lower liquid cavity ...

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Abstract

The invention provides a vibration absorbing device used for a railway train. The device includes a shell element having a closed liquid storage chamber, a central spindle assembly and a spring element, wherein the central spindle assembly passes through the elastic bottom wall of the shell element sealingly and extends downwards, and the spring element is arranged on the outer wall of the centralspindle assembly in a cladding mode and located in a liquid storage cavity. The spring element divides the liquid storage cavity into an upper liquid cavity and a lower liquid cavity, and a fluid channel used for communicating the upper liquid cavity and the lower liquid cavity is formed in the central spindle assembly. The vibration absorbing device has the fluid damping effect on the basis of the spring element, and the dynamic stiffness characteristics of the spring assembly are combined with the damping characteristics of fluid, thereby improving the dynamic stiffness stability and vibration-reduction and energy-dissipation capacity of the vibration absorbing device.

Description

Technical field [0001] The invention relates to the technical field of rail trains, in particular to a vibration damping device for rail trains. Background technique [0002] When rail trains are running, complex vibration phenomena will occur. Therefore, it is indispensable to install vibration damping devices that dampen mechanical vibrations on rail trains. For example, conical springs are used for the primary suspension of rolling stock bogies, and are mainly used to bear the load of the car body and the frame. [0003] Traditional rubber cone springs are easy to obtain different stiffness values ​​in the vertical, horizontal and longitudinal directions, and have good nonlinear characteristics, so they can meet the general axle box suspension requirements. However, with the increase of railway speed and load capacity, due to the limitation of rubber material, the dynamic stiffness of rubber cone spring decreases with the increase of frequency, and the phenomenon of high frequ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F9/10F16F9/32F16F9/34F16F13/00B61F5/30
CPCB61F5/307F16F9/10F16F9/3207F16F9/34F16F13/002F16F2222/12
Inventor 刘桂杰卜继玲王永冠丁行武邹波张亚新
Owner ZHUZHOU TIMES NEW MATERIALS TECH