The invention relates to a bogie (10) for a high-speed railway vehicle, comprising: a bogie chassis, at least one wheel (20) mounted rotating on the chassis by means of an axle (18) and a primary suspension system (22), at least one motor (24), for each motor (24), at least one gearbox (26) able to mechanically link the motor (24) and the axle (18). Each motor (24) is rigidly fastened to the chassis (12).

The invention relates to a bogie (10) for a high-speed railway vehicle, comprising: a bogie chassis, at least one wheel (20) mounted rotating on the chassis by means of an axle (18) and a primary suspension system (22), at least one motor (24), for each motor (24), at least one gearbox (26) able to mechanically link the motor (24) and the axle (18). Each motor (24) is rigidly fastened to the chassis (12).

A sub-frame radial bogie comprises wheelsets, a side frame, a swing bolster, a wheelset radial device and a brake gear. Bearing adapters (41) forming the wheelset radial device are fixedly connected with the sub-frame (42) via pulling rivets (11), and each group of the bearing adapters (41) is bilaterally symmetrical in structure with a symmetry plane (A). The sub-frame (42) comprises an arm (51) and an end (52); a sub-frame connection hole (61) is arranged on the end (52); transverse positioning bosses (73) are arranged on the bearing adapters (41); and an arc groove (75) and symmetrical sub-frame connection holes (71) are arranged on a connection base (72). The bearing adapters use the same standard structure, hence, the more precise design and machining can be realized, and the cost is reduced, and meanwhile, the maintenance technique of the sub-frame is improved, and the maintenance cost is reduced.

A sub-frame radial bogie comprises wheelsets, a side frame, a swing bolster, a wheelset radial device and a brake gear. Bearing adapters (41) forming the wheelset radial device are fixedly connected with the sub-frame (42) via pulling rivets (11), and each group of the bearing adapters (41) is bilaterally symmetrical in structure with a symmetry plane (A). The sub-frame (42) comprises an arm (51) and an end (52); a sub-frame connection hole (61) is arranged on the end (52); transverse positioning bosses (73) are arranged on the bearing adapters (41); and an arc groove (75) and symmetrical sub-frame connection holes (71) are arranged on a connection base (72). The bearing adapters use the same standard structure, hence, the more precise design and machining can be realized, and the cost is reduced, and meanwhile, the maintenance technique of the sub-frame is improved, and the maintenance cost is reduced.

A chassis frame for a rail vehicle which includes at least one drive unit fastened to the chassis frame via at least one elongated fastener, wherein the at least one fastener is arranged transversely with respect to the direction of travel and protrudes into the chassis frame or is guided through brackets which are fixedly connected to the chassis frame and protrudes into a space above or below the chassis frame in order to reduce the weight for the bearing of the drive unit and to facilitate mounting of the drive unit.

A chassis frame for a rail vehicle which includes at least one drive unit fastened to the chassis frame via at least one elongated fastener, wherein the at least one fastener is arranged transversely with respect to the direction of travel and protrudes into the chassis frame or is guided through brackets which are fixedly connected to the chassis frame and protrudes into a space above or below the chassis frame in order to reduce the weight for the bearing of the drive unit and to facilitate mounting of the drive unit.

A railway vehicle and an axle box structure thereof are provided. The axle box structure includes an axle box body and a positioning joint mounting seat, and a bearing mounting cavity is provided inside the axle box body. The positioning joint mounting seat is provided with a mounting cavity configured to mount a positioning joint, a longitudinal center line of the axle box body is in parallel with a longitudinal center plane of the positioning joint mounting seat, and the longitudinal center plane of the positioning joint mounting seat is outwardly deviated with respect to a longitudinal center plane of the axle box body. In this way, a large space can be left for mounting the brake clamp, and the mounting and replacing of the brake clamp and the wheel set can be facilitated.

A railway vehicle and an axle box structure thereof are provided. The axle box structure includes an axle box body and a positioning joint mounting seat, and a bearing mounting cavity is provided inside the axle box body. The positioning joint mounting seat is provided with a mounting cavity configured to mount a positioning joint, a longitudinal center line of the axle box body is in parallel with a longitudinal center plane of the positioning joint mounting seat, and the longitudinal center plane of the positioning joint mounting seat is outwardly deviated with respect to a longitudinal center plane of the axle box body. In this way, a large space can be left for mounting the brake clamp, and the mounting and replacing of the brake clamp and the wheel set can be facilitated.

A chassis frame for a rail vehicle which includes at least one drive unit fastened to the chassis frame via at least one elongated fastener, wherein the at least one fastener is arranged transversely with respect to the direction of travel and protrudes into the chassis frame or is guided through brackets which are fixedly connected to the chassis frame and protrudes into a space above or below the chassis frame in order to reduce the weight for the bearing of the drive unit and to facilitate mounting of the drive unit.

A chassis frame for a rail vehicle which includes at least one drive unit fastened to the chassis frame via at least one elongated fastener, wherein the at least one fastener is arranged transversely with respect to the direction of travel and protrudes into the chassis frame or is guided through brackets which are fixedly connected to the chassis frame and protrudes into a space above or below the chassis frame in order to reduce the weight for the bearing of the drive unit and to facilitate mounting of the drive unit.