Rubber vibration isolator for rail transit floating slab ballast bed vibration isolation system

Abstract

The invention discloses a rubber vibration isolator for a rail transit floating slab track bed vibration isolation system. The rubber vibration isolator comprises an upper cover plate, an upper iron part, a rubber part, a lower iron part, a lower seat plate, an iron core, a limit bolt and a locking plug screw, the upper cover plate, the upper iron part, the rubber part, the lower iron part and the lower seat plate are sequentially connected, the upper cover plate is detachably connected with the upper iron part, the upper iron part, the lower iron part and the rubber part are integrally vulcanized, the lower seat plate is detachably connected with the lower iron part, the iron core is arranged in the rubber part, the iron core and the rubber part are integrally vulcanized, the limit bolt sequentially penetrates the upper cover plate, the iron part, the rubber part and the lower iron part and is connected with the upper cover plate in a threaded manner, and the locking plug screw is connected with the upper cover plate in a threaded manner and abutted to the top face of the limit bolt. The rubber vibration isolator is high in bearing capacity, fine in fatigue resistance, simple in structure and convenient to manufacture, mount and maintain and has fine vibration isolation performances, and vertical limit and radial limit can be realized.

Description

technical field [0001] The invention relates to vibration reduction and noise reduction technology, in particular to a rubber vibration isolator used in a vibration isolation system of a floating slab ballast bed in rail transit. Background technique [0002] At present, among the vibration and noise reduction methods in the urban rail transit industry, the vibration isolation effect of the floating slab track bed vibration isolation system is the most ideal, and it is suitable for high-grade or special vibration reduction areas that require high vibration reduction requirements, such as hospitals, concert halls, etc. Museums and precision instrument laboratories have been widely used in rail traffic vibration and noise control. The core component of the floating slab ballast bed vibration isolation system is the elastic element under the ballast bed slab. On the one hand, it supports the ballast bed to bear the static load of the track structure and the dynamic load of the ...

AI Technical Summary

Problems solved by technology

Due to the large difference in stiffness between the steel spring and the rubber when the composite steel spring isolator is loaded, the deformation is not synchronized, the natural frequency is relatively dense, it is easy to cause system resonance, and the vibration isolation effect is poor, and its processing technology and technical level have not been recognized by the industry. Approved, so it is limited to use within the scope of the Shanghai rail transit test section, and has disappeared so far

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