A tubular elastic linkage device for axle beam for elastically linking a truck frame and an axle beam including: an inner axial member; two outer segments opposed in axis-perpendicular direction peripherally outside the inner axial member for attachment to a housing part on an axle-beam side; and a main rubber elastic body elastically connecting them. A pocket part opens in an outer peripheral face of the main rubber elastic body onto outside via a window penetrating one outer segment. A stopper supported by the inner axial member is disposed in the pocket part to face the housing part distantly via the window. Contact of the stopper with the housing part constitutes a displacement limitation mechanism between the inner axial member and the outer segments. The other outer segment has an aperture having the main rubber elastic body exposed outside via it.

The electric vehicle can include: a payload interface, a payload suspension, a chassis, a set of bumpers, a sensor suite, a controller, a chassis suspension, and an electric powertrain. The electric vehicle 100 can optionally include a payload adapter, a power source, a cooling subsystem, and/or any other suitable components. The electric vehicle functions to structurally support a payload, such as a cargo container (e.g., intermodal container, ISO container, etc.), and/or to facilitate transportation of a payload via railway infrastructure.

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 steering bogie for a railcar includes: a bogie frame supporting a carbody of the railcar; a wheelset including an axle and wheels, the axle extending in a car width direction, the wheels being provided at both respective sides of the axle; and a steering device that presses a pressing target member to steer the wheelset with respect to the bogie frame, the pressing target member being constituted by the wheelset or a member configured to be displaced integrally with the wheelset in a steering direction, the steering device including at least one steering unit, the at least one steering unit including a pressing member that separably contacts the pressing target member to press the pressing target member, and a power mechanism causes the pressing member to contact and separate from the pressing target member.

A steering bogie for a railcar includes: a bogie frame supporting a carbody of the railcar; a wheelset including an axle and wheels, the axle extending in a car width direction, the wheels being provided at both respective sides of the axle; and a steering device that presses a pressing target member to steer the wheelset with respect to the bogie frame, the pressing target member being constituted by the wheelset or a member configured to be displaced integrally with the wheelset in a steering direction, the steering device including at least one steering unit, the at least one steering unit including a pressing member that separably contacts the pressing target member to press the pressing target member, and a power mechanism causes the pressing member to contact and separate from the pressing target member.

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 wheel drive cart for a transporting and/or sorting system configured to tow a plurality of loading carts movable along a closed path, constituted by a first and a second rail parallel to each other, between a loading and unloading stations. The cart includes a pair of direct drive wheels without reducers, with each wheel including an electric motor having a stator, integral with a bracket hinged to a frame of the cart, and a rotor, a peripheral outward facing portion of which forms a cylindrical surface of the wheel designed to roll on a resting surface of a respective rail.

A wheel drive cart for a transporting and/or sorting system configured to tow a plurality of loading carts movable along a closed path, constituted by a first and a second rail parallel to each other, between a loading and unloading stations. The cart includes a pair of direct drive wheels without reducers, with each wheel including an electric motor having a stator, integral with a bracket hinged to a frame of the cart, and a rotor, a peripheral outward facing portion of which forms a cylindrical surface of the wheel designed to roll on a resting surface of a respective rail.

The vehicle including an active suspension system (22) parameterized by a set of adjustment parameters. The railway track is cut into segments. For each segment (T), the method includes campaigns for optimization of the set of parameters, such that: during the first campaign, to each passage of the suspension system (22) on the segment (T), a first set of parameters, specific to this passage, is predefined and applied to the suspension system (22), and a comfort quality index is calculated, and then a metaheuristic algorithm is applied for determining second sets of parameters, and during each following optimization campaign, at each passage of the suspension system over the segment, one of the determined sets of parameters by the previous optimization campaign is applied to the suspension system, and the comfort quality index is calculated, and then the metaheuristic algorithm is applied in order to determine new sets of parameters.