Motor joint for bullet train bogie and manufacture method thereof

Abstract

The invention discloses a motor joint for a bullet train bogie and a manufacture method thereof, wherein the motor joint comprises a metal mandrel, a first metal jacket, a second metal jacket, a plurality of metal spacers, and a plurality of elastic rubber layers; the elastic rubber layers are vulcanized to the metal mandrel, the metal spacers and the first metal jacket to form an elastomer that is pressed into the second metal jacket; the metal spacers, the elastic rubber and the first metal jacket are each of double-segment structure; the elastomer is pressed into the second metal jacket to cause pre-compressive stress for the elastic rubber, a first air isolation segment and a second air isolation segment are formed between the two-segment metal spacers and the elastic rubber, the section of each of the first air isolation segment and the second air isolation segment along the radius of the metal mandrel is sector-shaped, the sector section of each air isolation segment is gradually expanded from the metal mandrel to the second metal jacket. The motor joint has improved quality.

Description

technical field [0001] The invention relates to a motor node and a manufacturing method thereof, in particular to a motor node for a motor train bogie and a manufacturing method thereof. Background technique [0002] In order to be able to adapt to China's high-speed railway operating environment and conditions, meet the needs of more diversified, long-distance, long-term, continuous high-speed operation, etc., create a design and manufacturing platform for high-speed EMUs suitable for China's national conditions and road conditions, and realize high-speed EMUs The group technology is completely independent, and the Railway Corporation starts the development of standard EMU models. The existing CRH EMUs in operation are all improved on the basis of imported imported EMUs, mixing European standards and Japanese standards, and producing some Chinese characteristics in the Chinese environment, while the newly developed standard EMUs have increased compatibility and do not derai...

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Problems solved by technology

[0006] However, in the above-mentioned patent documents, the elastic rubber body, the metal mandrel, the metal spacer, and the first layer of metal jacket are vulcanized together. Due to the existence of the air isolation section, the elastic rubber body and the metal spacer are all split structures. Therefore, the effective bonding area between the innermost elastic rubber body and the metal mandrel is reduced, thereby affecting the quality of the product

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