The present disclosure provides a composite powered wheel set, a train, a wheel-rail system and a train control method. The composite powered wheel set comprises two booster wheels and two support wheels mounted on a driving axle. The booster wheels are fixedly mounted on two ends of the driving axle, the support wheels are mounted on the driving axle via bearings, the moving axle is connected to a first transmission device, which is connected to a first power mechanism, and the driving axle is further connected to a train bogie via a connecting device. Booster wheels and booster rails are provided to improve anti-skid performance, so the train will not skid when running on a steep slope or under a heavy traction load. Restrictions on the railway slope, train traction load, and train speed are eliminated to a great extent, and the application scope of the wheel rails is expanded.

A dead axle of a rail vehicle, a rail vehicle, and a rail transportation system are provided. The dead axle of a rail vehicle includes: an axle body; a running wheel; a guiding frame; a horizontal wheel; and a connecting rod component, including a first transverse pull rod and a second transverse pull rod, where when the rail vehicle turns left, the horizontal wheel cooperates with a rail beam to drive the guiding frame to swing and drive the first transverse pull rod to move together, and the second transverse pull rod is driven by the first transverse pull rod to drive the running wheel to swing to the left, and when the rail vehicle turns right, the horizontal wheel cooperates with the rail beam to drive the guiding frame to swing and drive the first transverse pull rod to move together, and the second transverse pull rod is driven by the first transverse pull rod to drive the running wheel to swing to the right.

A tire support rim for track roller associated with a flange is provided with a circular tire (2), and a support rim (1) for an annular track roller producing a flange. The rim (1) defines a peripheral edge intended to bear a tire, a medial edge in contact with the medial portion of the roller, and two opposite faces producing, on the one hand, an open face and, on the other hand, a bearing face positioned against the surface of the flange of the roller. The rim (1) incorporates a cooling device having at least one circulation duct for air passing through the thickness of the rim from an orifice (51) of the open face such that the duct has a portion at the medial edge and a portion positioned radially on the bearing face between the medial and peripheral edges.

A transport cart (3) and a transmission device thereof (32). The transmission device comprises: a crawling assembly (320), a rotary drive assembly and a crawling drive assembly. The crawling assembly comprises: a wheel frame (321), comprising a first end and a second end opposite to the first end, the wheel frame extending from the first end to the second end; a driving wheel (322), mounted at the second end and having an axis perpendicular to the extending direction of the wheel frame; and a guide wheel (323), mounted at the second end and having an axis parallel to the extending direction of the wheel frame. The present transport cart provided with the described transmission device may move along both a horizontal rail and a vertical rail and may quickly switch between the horizontal rail and the vertical rail, thus improving the moving efficiency.

A device for monitoring wear of a flange (1) of a roller (2) includes a peripheral rim (3) and intended to cooperate with a homologous flange (1bis) of a roller (2bis) positioned face-to-face to interact with the head of a rolling rail (4). The device includes at least one first recess localized at the level of a peripheral line of constant radius on the flange (1) configured to be positioned at the level at which the point (7) of separation of the flange (1) relative to its homologue (1bis) is the smallest.

A transport vehicle includes: a vehicle body (31) and a first traveling mechanism (32) mounted on the vehicle body (31). The first traveling mechanism (32) includes a plurality of crawling assemblies (320) respectively provided on two opposite sides of the vehicle body (31). Each crawling assembly (320) includes: a wheel carrier (321) extending outwardly from a lateral side of the vehicle body (31); and a driving wheel (322) mounted on the wheel carrier (321), the driving wheel has an axis perpendicular to an extending direction of the wheel carrier (321). The wheel carrier (321) is rotatable about the central axis of the wheel carrier (321) in the extension direction.

A dead axle of a rail vehicle includes: an axle body; a running wheel; a guiding frame; a horizontal wheel; and a connecting rod component, including a first transverse pull rod and a second transverse pull rod, where when the rail vehicle turns left, the horizontal wheel cooperates with a rail beam to drive the guiding frame to swing and drive the first transverse pull rod to move together, and the second transverse pull rod is driven by the first transverse pull rod to drive the running wheel to swing to the left, and when the rail vehicle turns right, the horizontal wheel cooperates with the rail beam to drive the guiding frame to swing and drive the first transverse pull rod to move together, and the second transverse pull rod is driven by the first transverse pull rod to drive the running wheel to swing to the right.

A transaxle of a rail vehicle includes: a power assembly; an axle body; a running wheel; a guiding frame; a horizontal wheel; and a connecting rod component, including a first transverse pull rod and a second transverse pull rod, where when the rail vehicle turns left, the horizontal wheel cooperates with a rail beam to drive the guiding frame to swing and drive the first transverse pull rod to move together, and the second transverse pull rod is driven by the first transverse pull rod to drive the running wheel to swing to the left, and when the rail vehicle turns right, the horizontal wheel cooperates with the rail beam to drive the guiding frame to swing and drive the first transverse pull rod to move together, and the second transverse pull rod is driven by the first transverse pull rod to drive the running wheel to swing to the right.

The ultralight two track train that does not derail, made up of one or more ultralight wagons and aerodynamic, oval or semi-oval transverse profiles, characterized in that the wagons carry vertical or inclined wheels or pulley wheels in their lower area and supported by the chassis of the wagons, which rest and roll on a pair of vertical or inclined rails, the channels of the pulley wheels are supported and held on the head of circular, semicircular or semi-oval section of the rails, the heads of the rails being trapped with the pulley wheels, adding pairs of wheels that use a common axis, the rails are coupled and fixed tongue and groove to the sleepers or to some monolithic structures or channels, the sleepers are fixed using the track system on concrete slab, using electrical supply means, propellant means and reducing means of the front, rear and lateral resistance of the wagons, adding wheels with permanent magnets or with electromagnets that are attached, or run close and attracted by the rails.

A rail structure for a bearing wheel of a crane includes surfaces receiving rolling and horizontal forces. The rail structure includes two surfaces located at a distance from one another and receiving rolling forces. The rail structure preferably includes at least one basic plate and, arranged on top of it, a wear surface arrangement. The surfaces receiving rolling forces are formed to this wear surface arrangement at a distance from one another. A combination of a bearing wheel and a rail structure of the above type is also disclosed.