A system and method for reconditioning railcar side frames including an overhead conveyer system, a railcar side frame holder, where the side frame is secured in the side frame holder, where the side frame holder is movably engaged with the overhead conveyer. The side frame and side frame holder are moved along the conveyer to a plurality of stations to perform operations such as welding and grinding. The side frame holder enables the side frame to be rotated 360 degrees while secured in the side frame holder. The side frame holder includes a fixed side arm, a movable side arm, and a pair of frame guides.

A system and method for reconditioning railcar side frames including an overhead conveyer system, a railcar side frame holder, where the side frame is secured in the side frame holder, where the side frame holder is movably engaged with the overhead conveyer. The side frame and side frame holder are moved along the conveyer to a plurality of stations to perform operations such as welding and grinding. The side frame holder enables the side frame to be rotated 360 degrees while secured in the side frame holder. The side frame holder includes a fixed side arm, a movable side arm, and a pair of frame guides.

A railcar axle box includes an axle box main body accommodating a bearing supporting an axle. The axle box main body includes: an inner surface defining an accommodating space accommodating the bearing; a first side surface provided at an outer side of the inner surface and at one car width direction side of a car width direction center of the accommodating space; and a second side surface provided at an outer side of the inner surface and at the other car width direction side of the center. A shortest distance between the first side surface and the car width direction center of the accommodating space and a shortest distance between the second side surface and the center are equal to each other in a car width direction.

A railcar bogie includes: a cross beam supporting a carbody of a railcar; an axle box including a bearing accommodating portion accommodating a bearing rotatably supporting a wheelset; a plate spring extending in a car longitudinal direction while supporting a car width direction end portion of the cross beam; and a receiving member provided above the axle box and supporting a car longitudinal direction end portion of the plate spring, an attachment hole being formed at a car longitudinal direction outside portion of the receiving member, a lifting fitting used to lift the bogie being attached to the attachment hole.

A bolster for a freight railway car truck relates to structural elements of freight railway car trucks. Locator recesses (8.2) with bearing surfaces (8.3) and thrust flanges (8.4) are formed in the side walls of guiding pockets (8). Wear-resistant lateral guiding plates (9) are secured within locator recesses (8.2) on the bearing surfaces (8.3), and wear-resistant inserts (10) are secured on inclined bearing seats (8.5). The use of wear-resistant lateral guiding plates (9) and wear-resistant inserts (10) protects side bearing surfaces and inclined bearing seats of guiding pockets (8) engaging with friction wedges of the shock absorber from contact wear.

A Rail Drone can include: a payload interface, a drivetrain, and a rail platform 515. The Rail Drone can additionally or alternatively include any other suitable set of components. The Rail Drone can integrate a standardized payload interface and an autonomous electric road vehicle platform into a rolling stock architecture. The Rail Drone can be a stand-alone, payload-agnostic, motive element which can be independently or cooperatively capable of carrying heavy loads across long distances at various cruising speeds.

The disclosure discloses a swing bolster, a swing bolster vibration reduction assembly and a bogie. The swing bolster includes a body, wherein a mounting cavity for mounting a friction block is formed in two ends of the body; the mounting cavity is provided with a first horizontal opening and a second horizontal opening, which are opposite to each other; and opening directions of the first horizontal opening and the second horizontal opening are perpendicular to an extending direction of the body. When the swing bolster in the disclosure is used, the friction block is mounted in the mounting cavity of the swing bolster body, and end parts of the friction block extend out of the first horizontal opening and second horizontal opening of the mounting cavity. The friction block is not matched with the swing bolster through sloped portions, and a movement direction of the swing bolster is perpendicular to a movement direction of the friction block relative to the swing bolster, so that wear of the friction block and the swing bolster is reduced, influence caused by the relative movement or wear of the swing bolster and the friction block to vibration reduction performance of the vertical elastic elements is prevented, a vibration reduction effect of the bogie in an unloaded state is ensured, and using reliability of the swing bolster is ensured.

A bogie (6) comprises a bogie frame (7). The bogie frame (7) is mounted on bearings (7b) via a first spring device (7a). A wheelset shaft (8) is mounted in the bearings (7b). A wheelset drive (9) concentrically surrounds the wheelset shaft (8) and acts thereupon. The wheelset drive (9) is spring-mounted on the bearings (7b) by means of a second spring device (16) exclusively associated with the wheelset drive (9). A two-level clutch (15) is arranged between the wheelset drive (9) and the wheelset shaft (8).

A bogie (6) comprises a bogie frame (7). The bogie frame (7) is mounted on bearings (7b) via a first spring device (7a). A wheelset shaft (8) is mounted in the bearings (7b). A wheelset drive (9) concentrically surrounds the wheelset shaft (8) and acts thereupon. The wheelset drive (9) is spring-mounted on the bearings (7b) by means of a second spring device (16) exclusively associated with the wheelset drive (9). A two-level clutch (15) is arranged between the wheelset drive (9) and the wheelset shaft (8).

A wheel set intermediate frame for a rail vehicle includes a plurality of mounting interfaces for chassis components at predetermined positions. Part of the wheel set intermediate frame for a rail vehicle is also at least one defined mounting interface for fixing to a subframe of a car body of a rail vehicle. A rail vehicle and a method for producing a wheel set intermediate frame for a rail vehicle are also provided.