Divided-plate liquid rubber composite node provided with damping through holes and forming method

Abstract

The invention discloses a divided-plate liquid rubber composite node provided with damping through holes and a forming method. The liquid rubber composite node comprises a mantle, a cover plate, an intermediate spacer bush, a rubber body and a mandrel. The rubber body is vulcanized between the intermediate spacer bush and the mandrel. The cover plate covers the intermediate spacer bush. The mantleis arranged on the outer sides of the cover plate and the intermediate spacer bush in a sleeving mode. A liquid cavity is formed between the cover plate and the rubber body. The liquid cavity is partitioned by the intermediate spacer bush. Liquid channels are formed in the rubber body and the mandrel correspondingly. The partitioned portions of the liquid cavity communicate with the liquid channels. The liquid channels enable the partitioned portions of the liquid cavity to communicate, so that liquid flows in a closed cavity formed in the liquid cavity and the liquid channels only. Therefore, the rigidity of the liquid rubber composite node, especially the dynamic rigidity of the liquid rubber composite node in a high-frequency state and a low-frequency state, is regulated by regulatingthe volume of the liquid cavity, so that the critical speed of a vehicle is increased, the curve crossing performance of the vehicle is improved, and abrasion is reduced.

Description

technical field [0001] The invention relates to the field of rail transit, in particular to a split type liquid rubber composite node and a forming method thereof. 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 de...

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Problems solved by technology

[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 Guarantee over-curve performance and reduce wear; it is difficult for ordinary joints to achieve the above characteristics, especially for old lines, where the wear of wheels, rails and lines is high, 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

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