Split type liquid rubber composite joint with low diameter-axial ratio

Abstract

The invention discloses a split type liquid rubber composite joint with a low diameter-axial ratio and an adjusting method, the split type liquid rubber composite joint comprises a core shaft, a rubber body, vulcanizing body outer sleeves, a stop block and an integral outer sleeve, the vulcanizing body outer sleeves are split type outer sleeves, a gap is formed between every two adjacent vulcanizing body outer sleeves, the rubber body is vulcanized between the vulcanizing body outer sleeves and the core shaft, a gap between the vulcanizing body outer sleeves extends into the rubber body; a hydraulic cavity with an opening in the outer side is defined by the mandrel, the rubber body and the vulcanizing body outer sleeve, a stop block is arranged in the hydraulic cavity and covers the vulcanizing body outer sleeve, and the outer sides of the stop block and the vulcanizing body outer sleeve are sleeved with an integral outer sleeve. The mandrel is provided with a concave pit which is concave towards the inner side of the mandrel, bosses are arranged on the two sides of the concave pit, the inner side of the stopping block is embedded in the concave pit of the mandrel, and when the stopping block and the mandrel move relatively in the axial direction, the bosses of the mandrel can stop the axial movement of the stopping block. Abrasion of a wheel track can be reduced, meanwhile, large axial rigidity is provided, and the running stability of a vehicle is guaranteed.

Description

technical field [0001] The invention relates to the field of rail transit, in particular to a method and structure for adjusting a low diameter-to-axis ratio of a liquid rubber composite node. Background technique [0002] According to the dynamic requirements, when the rotating arm node runs in a straight line at high speed (high-frequency vibration), it provides greater radial stiffness to ensure operational stability and increase the critical speed; when it passes through the curve (low frequency and large amplitude), it provides a smaller radial stiffness. Stiffness performance ensures over-curve performance and reduces wear; ordinary nodes are difficult to achieve the above characteristics, especially for old lines, wheel rails and lines wear a lot, and maintenance costs are high, so it is necessary to use a new product that has the above characteristics at the same time - liquid rubber compound node. [0003] The working principle of the liquid rubber composite joint ...

AI Technical Summary

Problems solved by technology

However, due to the limitation of the volume of the liquid rubber composite node, it is difficult to reduce the radial stiffness of the liquid rubber composite node by increasing the thickness of the rubber body.

Therefore, it is difficult to achieve a small diameter-to-axis ratio of the stiffness of the liquid rubber composite joint, that is, the ratio of radial stiffness to axial stiffness is small

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