Damping-variable elastic wheel as well as assembling method and rigidity design method thereof

Abstract

The invention discloses a damping-variable elastic wheel. The damping-variable elastic wheel comprises a wheel rim, a wheel core and damping elastomers, the wheel rim and the wheel core are separatedin the radial direction to form radial gaps, and are separated in the circumferential direction to form circumferential gaps, the N*2 circumferential gaps are uniformly distributed in the circumferential direction, moreover, N is greater than or equal to 3, one corresponding damping elastomer is compressed in each circumferential gap, moreover, the damping elastomers are separated from the wheel rim and the wheel core in the radial direction and are not in contact with the wheel rim and the wheel core, hydraulic oil in the radially aligned damping elastomers communicates through oil guide pipes in a sealed mode, and damping varying of the damping elastomers is achieved through flowing of the hydraulic oil among the damping elastomers. According to the damping-variable elastic wheel, the radial rigidity of the elastic wheel can be effectively reduced, then the vibration condition of the lower portion of a vehicle spring can be improved, the provided damping characteristic can effectively buffer starting and braking force, the comfort is better, the structural stability and reliability are high, the use safety and practicability are high, and the production cost and maintenance costare low. The invention further provides the damping-variable elastic wheel as well as an assembling method and a rigidity design method thereof.

Description

technical field [0001] The invention relates to a variable damping elastic wheel, an assembly method thereof, a stiffness design method, an assembly method and a stiffness design method thereof, and belongs to the technical field of elastic wheels for rail vehicles. Background technique [0002] The elastic wheel is an elastic element embedded in a compressed state between metal parts, which can effectively reduce the vibration and noise when the vehicle is running. By adjusting the compression state of the elastic body, the stiffness of the elastic wheel can be changed and the performance of the wheel can be adjusted. [0003] The shear type elastic wheel rubber part of the traditional structure is perpendicular to the wheel axis, and the radial stiffness and axial stiffness are adjusted to form a shear force between the metal part and the rubber part. Since the rigidity of the rubber parts will decrease after long-term compression and deformation, the rubber parts will sli...

AI Technical Summary

Problems solved by technology

[0012] For low-floor vehicles that use motor direct drive in the prior art, since the radial stiffness of the elastic wheels is greater than the axial stiffness, the radial lightening effect of the unsprung part of the vehicle is not good. In order to ensure the safety performance of the motor and prolong the service life , and improve the ride comfort, it is necessary to reduce the vibration of the unsprung part of the vehicle to ensure that the low-floor vehicle achieves the best vibration and noise reduction effect

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