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Noise-reduction damping device of train wheel

A technology for train wheels and damping devices, which is applied to wheels, wheels characterized by rail running parts, wheel cover plates, etc., can solve problems such as peeling off and limited noise reduction effects, and achieve vibration suppression, convenient implementation, and easy installation Effect

Inactive Publication Date: 2010-05-26
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, installing noise shielding plates on both sides of the web or installing a sound insulation skirt under the bogie to partially cover the wheel set can shield the noise to a certain extent, but it does not reduce the vibration of the wheel itself. The effect is limited; in addition, the elastic damping constrained layer is pasted on the surface of the wheel to reduce the noise by reducing the vibration of the wheel, which also has a certain noise reduction effect, but the high-speed rotation of the wheel and the complex and harsh driving environment are easy to make the gap between the damping constrained structure and the wheel The adhesive layer fails and peels off

Method used

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  • Noise-reduction damping device of train wheel
  • Noise-reduction damping device of train wheel
  • Noise-reduction damping device of train wheel

Examples

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specific Embodiment approach

[0026] Figure 1-4 Shown, a specific embodiment of the present invention: a train wheel noise reduction damping device, its composition is: by at least two ring-shaped metal plates 3a, 3b and at least one ring-shaped viscoelastic damping layer 4 Alternately bonded and laminated to form a noise shielding plate; the outer periphery of the noise shielding plate is screwed on the rim 1a of the wheel 1 through the outer mounting ring 2, and the inner periphery is clamped on the hub 1c and the axle 1d through the clamp ring 10.

[0027] In this example, an inner mounting ring 7 , an elastic snap ring 8 and a rubber ring 9 are arranged in sequence between the inner circumference of the noise shielding plate and the clamp ring 10 .

[0028] The outer diameter of the viscoelastic damping layer 4 in this example is smaller than the inner diameter of the outer mounting ring 2, and the inner diameter is larger than the outer diameter of the inner mounting ring 7; there are four metal plat...

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Abstract

The invention discloses a noise-reduction damping device of a train wheel. The structure of the noise-reduction damping device is characterized in that a noise shielding plate is formed by alternately bonding and superimposing at least two circular ring-shaped metal plates (3a,3b) and at least one circular ring-shaped viscoelastic damping layer (4); the outer circumference of the noise shielding plate is fixed on the rim (1a) of a wheel (1) through an outer mounting ring (2) by screw threads; and the inner circumference is clamped on a hub (1c) and an axle (1d) through a clamping ring (10). The damping device has good noise-reduction effect and does not change the shape of the main body of the wheel, thereby being easy to popularize and implement.

Description

technical field [0001] The invention relates to a train wheel noise reduction device. Background technique [0002] With the rapid development of rail transit, wheel-rail noise has become the main noise source of rail transit's impact on the environment. The wheel-rail rolling noise of the train is generated by the short-wave irregularities on the rail surface of the track structure to excite the wheel-rail vibration and then spread through the air. With the construction of a large number of urban rail transit, in some small-radius curve sections, the wheels will produce local lateral sliding along the curved rail, which is the so-called "stuck-slip effect", and thus form a high-pitched wheel-rail whistling sound , bringing serious noise pollution to the residents along the line. [0003] Wheel-rail noise sources are mainly composed of wheels and rails. Among them, there are two ways to reduce the noise radiation of railway wheels: one is to reduce wheel noise through the...

Claims

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Application Information

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IPC IPC(8): B60B17/00B60B7/00
Inventor 肖新标王超李言义崔大宾金学松
Owner SOUTHWEST JIAOTONG UNIV
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