Radial variable stiffness and axial variable stiffness adjustment of split type liquid rubber composite joint

Abstract

The invention discloses radial variable stiffness and axial variable stiffness adjustment of a split type liquid rubber composite joint. The liquid rubber composite joint comprises a mandrel, a rubber body, vulcanized body outer sleeves and a stop block, wherein the vulcanized body outer sleeves are split outer sleeves, a gap is formed between every two adjacent vulcanized body outer sleeves, the rubber body vulcanized between the vulcanized body outer sleeves and the mandrel is an inclined rubber layer, and the gap between the vulcanized body outer sleeves extends into the inclined rubber layer; a concave pit which is concave towards the inner side of the mandrel is formed in the mandrel, the stop block is arranged at the concave pit, the outer side of the stop block and the outer side of the vulcanized body outer sleeve are sleeved with an integral outer sleeve, and a rubber body vulcanized at the bottom of the concave pit is a radial rubber layer. The radial rigidity and the axial rigidity of the vehicle can meet the requirements under different working conditions, so that the stability, the safety and the reliability of vehicle operation are ensured.

Description

technical field [0001] The invention relates to the field of rail transportation, in particular to an adjustment structure and method for radial variable stiffness and axial variable stiffness of liquid rubber composite nodes. 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 ...

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Problems solved by technology

[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

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