Liquid rubber composite node mandrel structure and casting method

Abstract

The invention relates to a liquid rubber composite node mandrel structure and a casting method. The liquid rubber composite node mandrel structure comprises a mandrel, an elastic part, an outer sleeve, multiple cavities and a flow channel, wherein the cavities are filled with damping liquid; the multiple cavities are communicated through the flow channel; a metal pipe with the melting point higherthan the melting point of a mandrel material is adopted to wind the flow channel; and the flow channel and the mandrel are integrally formed in a casting manner. Before casting, the outer surface ofthe metal pipe is subjected to sand blasting and coated with a high-temperature-resistant coating. In the casting process, a high-pressure fluid is introduced into one end of the flow channel so as toensure that the metal pipe is not molten by the molten mandrel material in the casting process. According to the liquid rubber composite node mandrel structure and the casting method provided by theinvention, the performance of a liquid rubber composite node is ensured, the production process is greatly simplified, and the production efficiency is improved.

Description

technical field [0001] The invention relates to a vibration-damping metal rubber part for a rail vehicle and an automobile, in particular to a liquid rubber composite node mandrel structure and a casting method. Background technique [0002] High-speed trains can run quickly and smoothly on track lines, largely relying on the damping effect of metal rubber parts on the train bogie. During the driving process, the metal rubber parts absorb the energy generated by the relative motion between the ground and the locomotive components through the damping effect of the rubber, so as to achieve a good vibration reduction effect. When driving in a straight line, the metal rubber parts of the traditional structure can meet the vibration damping requirements, but when passing the curve (especially when passing the curve at high speed), the rigidity of the metal rubber parts of the traditional structure cannot be adjusted, resulting in poor damping performance. In order to solve this ...

AI Technical Summary

Problems solved by technology

[0011] The above-mentioned patents all use the aforementioned two kinds of flow channels, which have the problems of poor stability of liquid rubber composite nodes or complex procedures, difficult processing, and low production efficiency.

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