Sealing method and structure for liquid cavity in liquid rubber composite node

Abstract

The invention discloses a sealing structure for a liquid cavity in a liquid rubber composite node. The liquid rubber composite node comprises a runner outer sleeve, a cover plate, a middle spacer bush, a rubber body and a mandrel, wherein the rubber body is vulcanized between the middle spacer bush and the mandrel; a liquid cavity is arranged between the cover plate and the rubber body; the outersleeve sleeves the cover plate and the outer side of the middle spacer bush; the two ends of the outer side of the middle spacer bush are equipped with step holes; a liquid channel which communicateswith the liquid cavity is arranged at the two ends of the cover plate and on the runner outer sleeve; the two end covers of the cover plates cover a step hole to define a step hole sealing structure;and a liquid channel at the two ends of the cover plate and on the runner outer sleeve is equipped with a liquid channel sealing structure. Through multiple sealing structures, liquid is ensured to not leak to the periphery from the liquid cavity along gaps among structures of various layers.

Description

technical field [0001] The invention relates to the field of rail transit, in particular to a sealing method and structure of a liquid rubber composite node. Background technique [0002] According to the dynamic requirements, when the pivoting arm node is running in a straight line at high speed (high frequency vibration), it provides a large radial stiffness to ensure the running stability and increase the critical speed; when it passes the curve (low frequency and large amplitude), it provides a small stiffness performance Guaranteed over-curve performance and reduced wear; it is difficult for ordinary joints to achieve the above characteristics, especially for old lines, where wheel rails and lines wear a lot, and the maintenance cost is high. Therefore, it is necessary to use a new product that has the above characteristics at the same time—liquid rubber composite joints. [0003] The working principle of the liquid rubber composite arm node: mainly through the design o...

AI Technical Summary

Problems solved by technology

Then, under the dual effects of load and vibration, while the volumes in the two cavities are constantly changing, the pressure of the liquid in the two cavities is very high, and the liquid pressure is prone to surge

However, there is very little space for a sealing structure to be installed in the liquid rubber composite jib joint, and it is difficult for a single sealing structure to effectively seal this multi-layer structure and liquid rubber composite jib joint with strong liquid pressure.

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