High-speed rail train bogie and frame thereof

A frame for a bogie of a high-speed railway train, comprising side sills and cross beams located between the side sills, and each of the side sills being provided with an air spring seat configured to install an air spring;

• wherein each of the cross beams has a seamless steel tube structure;
• the frame further comprises passages, and a main air chamber of each air spring and a cavity of the respective cross beam are in communication with each other through the respective passage;
• and an anti-roll bar seat configured to install an anti-roll bar is welded below each side sill, and the anti-roll bar seat is in a circular arc transition with a bottom of the side sill, to form a dovetail structure;
• wherein the frame further comprises two air chambers which are arranged longitudinally, two ends of each of the air chambers are respectively in communication with two of the cross beams, and each passage is in communication with the respective air chamber, to be in communication with the cavities of the cross beams;
• and
• wherein each of the air chambers is of a bending plate structure having a U-shaped section, an open side of the air chamber is longitudinally welded on an inner side wall of the respective side sill;
• and the respective side sill and the cross beams are connected by the air chamber.