A wheel assembly includes a first rim piece for engaging a rotatable axle; and a second rim piece for engaging the rotatable axle. The first rim piece has axially extending curved friction plates for engaging a first side of a spoke structure of a tire. Axially outer ends of the friction plates engage axially extending lugs of the second rim piece to form a single split wheel assembly.

Provided is a railway wheel capable of suppressing formation of pro-eutectoid cementite even if the C content is high. A railway wheel according to an embodiment of the present invention has a chemical composition consisting of: in mass %, C: 0.80 to 1.15%; Si: 0.45% or less; Mn: 0.10 to 0.85%; P: 0.050% or less; S: 0.030% or less; Al: 0.120 to 0.650%; N: 0.0030 to 0.0200%; Cr: 0 to 0.25%; and V: 0 to 0.12%, with the balance being Fe and impurities, wherein an amount of pro-eutectoid cementite, which is defined by Formula (1), in a microstructure of the railway wheel is not more than 1.50 pieces/100 m:

Amount of pro-eutectoid cementite (pieces/ 100 m)=a total sum of the number of pieces of pro-eutectoid cementite which intersect with two diagonal lines in a square visual field of 200 m200 m/(5.66100 m) (1)

A bicycle hub shaft includes a first shaft section made of a first material and inserted into a sprocket seat; and a second shaft section made of a second material. The strength of the first material is stronger than that of the second material. The first shaft section has one end connected to one end of the second shaft section. The bicycle hub shaft is formed by the first and second shaft sections, instead of being integrally formed. Besides, the strength of the first shaft section is stronger than the second shaft section, so that the first shaft section inserted in the sprocket seat has a higher structural strength, thus improving the strength of the bicycle hub shaft and the load capacity of the sprocket seat as well.

The wheel is for a railway vehicle that travels on a rail. The wheel includes a wheel tread, a flange and a throat portion. The wheel tread is provided at an outer circumferential portion of the wheel. The wheel tread faces a head surface of the rail. The flange is provided at the outer circumferential portion of the wheel. The flange projects further outward than the wheel tread in the radial direction of the wheel. The throat portion connects the surface of the flange and the wheel tread. The throat portion has a protrusion. The protrusion projects to the rail side. The protrusion extends along the entire circumference of the throat portion.

Vehicle rim for the mounting of a tire, comprising: an axially central part (20) comprising a disc; two lateral parts (31, 32), at least one of the lateral parts being separate from the axially central part, each of the lateral parts having a rim seat receiving a bead of a tire, the axially central part and the two lateral parts being made from a rigid matrix reinforced by a plurality of reinforcement elements; an intermediate part (41, 42) linking the axially central part and each lateral part separate therefrom, this intermediate part being made of a flexible matrix reinforced by a reinforcement, wherein 1 MPathe Young's modulus of uniaxial extension of the flexible matrix100 MPa, the Young's modulus of uniaxial extension of the reinforcement elements is5 GPa; wherein the Young's modulus of uniaxial extension of the rigid matrix is5 GPa.

A wheel for a non-motorized vehicle (e.g., a shopping cart) can include a housing assembly and a tread assembly. The housing assembly can be configured to sealingly house electronics or other components. The tread assembly can removably mate with the housing assembly such that the electronics or other components remain closed and/or sealed within the housing assembly when the tread assembly is mated or unmated with the housing assembly.

A road wheel for a vehicle includes a face portion and a rim portion. The face portion is formed from a metallic alloy and defines a central portion plurality of spokes extending between the central portion and a proximal bead element. The rim portion is formed from a composite material and defines an annular wall circumscribing a wheel axis extending to a distal bead element from said face portion. The proximal bead element is defined by the metallic alloy and the distal bead element is defined by the composite. The face portion and the rim portion are interconnected in interlocking engagement.

The present invention provides a smart mobile vehicle comprising a vehicle body, a chassis, driving wheels, a battery module, a plurality of motors and a vehicle control unit. The chassis has a suspension system, a brake system and a steering system. The two driving wheels are composed of a plurality of circular units, and the driving wheels are embedded in two-wheel frames on two sides of the vehicle body. The battery module provides the smart mobile vehicle with driving power. The plurality of motors disposed between the two circular units or on a surface of any one of the circular units; wherein the motors are electrically connected to the battery module, and the torque and directional outputs of the motors is used to drive the rotation of the two driving wheels. The vehicle control unit is electrically connected to the motors and the battery module to transmit a monitoring signal.

The invention relates to a wheel for a powered two-wheeler, in particular a motorcycle or a motor scooter, that is at least sectionally made of a fiber-reinforced plastic material. A hub area (12) of the wheel (IO) is provided with two rigid, self-supporting, metal inserts (18, 20), which are arranged on axially opposite sides of the hub area (12), and which in an axial and radial direction (A, r) are connected to one another in a form-fit manner.

A vehicle wheel includes: a wheel having a rim; a sub-air chamber member serving as a Helmholtz resonator; and a support member integrated with the sub-air chamber member and joined to the rim. The sub-air chamber member is made of a synthetic resin. The support member is made of a metal.