Integral liquid rubber composite joint with small-diameter axial ratio and rigidity adjusting method

Abstract

The invention discloses an integral liquid rubber composite joint with a small-diameter axial ratio and an adjusting method. The liquid rubber composite joint comprises a core shaft, a rubber body, a vulcanizing body outer sleeve, a stop block and an integral outer sleeve. The rubber body is vulcanized between the vulcanizing body outer sleeve and the core shaft, so that the rubber body generates composite deformation of shearing and extruding when the rubber body bears radial pressure, and the radial rigidity of the liquid rubber composite joint is reduced; and a pit recessed towards the inner side of the mandrel is formed in the core shaft, bosses are arranged on the two sides of the pit, the stop block is arranged at the position of the pit, the maximum outer diameter of the bosses of the core shaft is set to be larger than the minimum inner diameter of the stop block, and when the stop block and the core shaft move relatively in the axial direction, the bosses of the core shaft can stop the axial movement of the stop block. Therefore, the axial rigidity of the liquid rubber composite joint is increased, and the small-diameter axial ratio of the rigidity of the liquid rubber composite joint is achieved. Abrasion of wheels and rails of a vehicle can be reduced, meanwhile, large axial rigidity is provided, and the running stability of the 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 the small-diameter-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

Images