The assembled-type traveling carriage includes: the telescopic cylindrical body being an extendable telescopic cylindrical body rotatably provided with a first screw at each end thereof, and incorporating an actuator configured to extend and withdraw a nest; a joint block provided with a second screw; a traveler rotatably provided with the first screw and attached a driving device thereto; and a coupling rod rotatably provided with the first screw on each end thereof. A first planar frame body is assembled by screwing joint blocks to four of the telescopic cylindrical bodies, screwing the travelers to the joint blocks such that the travelers are positioned on extension lines of the telescopic cylindrical bodies, and coupling one ends of the four telescopic cylindrical bodies to one another by the coupling rods through the joint blocks.

A trailer includes a trailer frame having a hitch. A stationary support base is joined to the trailer frame. Two support plates are slidably guided on the support base toward and away from each other. A pair of wheel assemblies is provided, wherein a wheel assembly is mounted to an end of each of the support plates remote from the other support plate such that a distance between the wheel assemblies varies with movement of the support plates on the support base. A pair of drive links is provided wherein a drive link is joined to each of the support plates. A drive mechanism is joined to the drive links and configured to selectively move the support plates toward or away from each other.

A trailer includes a trailer frame having a hitch. A stationary support base is joined to the trailer frame. Two support plates are slidably guided on the support base toward and away from each other. A pair of wheel assemblies is provided, wherein a wheel assembly is mounted to an end of each of the support plates remote from the other support plate such that a distance between the wheel assemblies varies with movement of the support plates on the support base. A pair of drive links is provided wherein a drive link is joined to each of the support plates. A drive mechanism is joined to the drive links and configured to selectively move the support plates toward or away from each other.

A utility vehicle of the present invention comprises a chassis; and a R.O.P.S. provided on the chassis and surrounding a cabin, wherein the R.O.P.S. includes a pair of left and right front pillars, a pair of left and right side beams, a pair of left and right rear pillars, and a front beam and a rear beam which extend in a width direction of a vehicle body, the R.O.P.S. has a connecting portion connecting a rear end of the side beam, a side end of the rear beam and an upper end of the rear pillar, and between the connecting portion and a rear portion of the chassis, a rear support for supporting the R.O.P.S. from a rear side is disposed.

A utility vehicle of the present invention comprises a chassis; and a R.O.P.S. provided on the chassis and surrounding a cabin, wherein the R.O.P.S. includes a pair of left and right front pillars, a pair of left and right side beams, a pair of left and right rear pillars, and a front beam and a rear beam which extend in a width direction of a vehicle body, the R.O.P.S. has a connecting portion connecting a rear end of the side beam, a side end of the rear beam and an upper end of the rear pillar, and between the connecting portion and a rear portion of the chassis, a rear support for supporting the R.O.P.S. from a rear side is disposed.

A vehicle has improved energy absorbing capability and occupants have increased blast survivability. The vehicle includes a suspended floor assembly. The floor assembly may be suspended by, at least in part, one or more suspensions arms that have an extendable portion. The floor assembly may also have a yaw plane energy absorber between the floor assembly and a wall of the vehicle.

A vehicle has improved energy absorbing capability and occupants have increased blast survivability. The vehicle includes a suspended floor assembly. The floor assembly may be suspended by, at least in part, one or more suspensions arms that have an extendable portion. The floor assembly may also have a yaw plane energy absorber between the floor assembly and a wall of the vehicle.

There is provided a vehicle structure of an electric automobile including: a center module having a battery that is accommodated beneath a floor of a vehicle cabin; a front module that is joined to a vehicle front side of the center module; a rear module that is joined to a vehicle rear side of the center module; a driving unit that is provided at one of the front module or the rear module, and that is connected to the battery; and a control unit that is provided at another of the front module or the rear module, and that controls autonomous driving of the vehicle.

There is provided a vehicle structure of an electric automobile including: a center module having a battery that is accommodated beneath a floor of a vehicle cabin; a front module that is joined to a vehicle front side of the center module; a rear module that is joined to a vehicle rear side of the center module; a driving unit that is provided at one of the front module or the rear module, and that is connected to the battery; and a control unit that is provided at another of the front module or the rear module, and that controls autonomous driving of the vehicle.

A self-propelled warning device used for road safety includes a bracket, a warning sign mounted to an upper side of the bracket, and at least one driving mechanism. The driving mechanism includes a supporting leg, a driving unit, and a wheel. The supporting leg includes a receiving portion, the receiving portion defines an accommodating space. The driving unit is accommodated in the accommodating space. The wheel is mounted on the receiving portion and is drivingly connected to the driving unit. The wheel is driven by friction of the driving unit. The driving mechanism is also disclosed.