An electric-propulsion car includes: a main frame, a front axle unit, a rear axle unit, wherein the axle units each have an auxiliary frame for supporting the axle units and two suspension units that connect two respective wheel supports to the supporting auxiliary frame, wherein at least one of the axle units is a motorized axle with steering wheels including, mounted on said auxiliary frame, an electric motor for actuating the rotation of the wheels, a control unit for controlling said electric motor, a transmission unit for connecting the electric motor to the wheels, and a steering device for steering the wheel supports, and wherein each one of the main frame and auxiliary frames includes a reticular lattice structure including boxed elements made of steel, each one of the main frame and auxiliary frames being adapted to be pre-assembled separately and then assembled together. The main frame and auxiliary frames include elements made up of multiple segments connected together and derived from at least one boxed element made of high-tensile steel, wherein the at least one boxed element has at least one notch formed on at least one side of the boxed element without involving an ulterior side of the boxed element, the notch being made on the at least one side at the point where said ulterior side of the boxed element has to be bent to obtain the configuration of the finished boxed element.

A work vehicle includes a chassis defining a longitudinal axis, a prime mover configured to move the chassis in the direction of the longitudinal axis, and a steering assembly configured to pivot a wheel relative to the chassis. The steering assembly includes a knuckle coupled to the wheel, a tie rod coupled to the knuckle and having a ball portion, a steering cylinder, and a joint assembly. The steering cylinder is slidably coupled to the chassis and configured to translate relative to the chassis along a cylinder axis perpendicular to the longitudinal axis. The steering cylinder includes a connection portion having an inner circumferential surface that partially defines a bearing pocket. The joint assembly couples the ball portion to the connection portion and includes a bearing race that is received into the bearing pocket in direct contact with the inner circumferential surface. The bearing race receives the ball portion.

A modular steering system for vehicles can be applied in common to left-hand drive (LHD) and right-hand drive (RHD) vehicles and can avoid interference with peripheral parts. A steering housing and a reducer housing are separately provided to detachably assemble the steering housing and the reducer housing on the left or right of a rack bar housing and to adjust their mounting angles.

The disclosure provides a steering system for a vehicle. The steering system includes a wheel having an inner surface and an outer surface, and a tire mounted thereon. The steering system includes a wheel support including an upper arm and a lower arm that rotatably support the wheel. At least one of the upper arm and the lower arm includes a curved member positioned to contact the inner surface of the wheel when the wheel is at a maximum steering angle. The steering system includes a steering rack and a tie rod coupled between the steering rack and the wheel support. The steering system also includes a compressible stopper coupled between the tie rod and the steering rack. The stopper is configured to compress as the wheel is turned toward the maximum steering angle and when the tie rod is moved past the maximum steering angle.

A method of assembling a flexible sleeve on a steering gear, wherein the steering gear has a receptacle pin which protrudes axially in the direction of a longitudinal axis and from which a tie rod protrudes in a manner so as to be articulated relative to the longitudinal axis, and the sleeve has a flexible hose-shaped bellows which toward the gear has an annular connecting flange that is configured so as to be coaxial with a flange axis and toward the tie rod has an annular seal.

A tie rod boot includes a minimally thick accordion shaped bellows section. One terminal end of the boot is secured to a steering mechanism and the other is secured to a tie rod. Protuberances are provided and are strategically located on the bellows walls for resisting impacts from rocks and other debris and minimizing holes through the tie rod. When the bellows is retracted and pairs of opposing bellows walls collapse towards each other, the protuberances of adjacent opposing walls nest with each other and contact the opposing wall. The protuberances can be step shaped rings or a ring of discrete protuberances which are step shaped or both. The step shaped protuberances are defined by a riser surface extending along a plane which is substantially perpendicular to the longitudinal axis of the boot and a tread annular surface which is substantially parallel with the longitudinal axis.

A rack assembly for a vehicle steering system includes a first rack component extending longitudinally from a first outer end to a first inner end, the first rack component having a first shoulder extending radially outwardly from a neck region to a head region. The rack assembly also includes a second rack component extending longitudinally from a second outer end to a second inner end, the second rack component having a second shoulder extending radially outwardly from a neck region to a head region. The rack assembly further includes a coupling assembly having an inner surface defining a hollow region that the head region of the first rack component and the head region of the second rack component are each disposed within, the inner surface having a first radial protrusion in abutment with the first shoulder and a second radial protrusion in abutment with the second shoulder.

The disclosure provides a steering system for a vehicle. The steering system includes a wheel having an inner surface and an outer surface, and a tire mounted thereon. The steering system includes a wheel support including an upper arm and a lower arm that rotatably support the wheel. At least one of the upper arm and the lower arm includes a curved member positioned to contact the inner surface of the wheel when the wheel is at a maximum steering angle. The steering system includes a steering rack and a tie rod coupled between the steering rack and the wheel support. The steering system also includes a compressible stopper coupled between the tie rod and the steering rack. The stopper is configured to compress as the wheel is turned toward the maximum steering angle and when the tie rod is moved past the maximum steering angle.

A vehicle has a frame, a motor, a driveshaft operatively connected to the motor, a front differential operatively connected to the driveshaft, a pair of front half-shafts operatively connecting the front differential to front wheels, at least one rear wheel, a steering wheel, a steering column operatively connected to the steering wheel, a rack and pinion assembly operatively connected to the steering column, the rack and pinion assembly being disposed rearward of the front differential, a right tie rod having a left end operatively connected to a rack of the rack and pinion assembly and a right end operatively connected to the right wheel, and a left tie rod having a right end operatively connected to the rack and a left end operatively connected to the left wheel. The inner ends of the tie rods are disposed forwardly of a vertically and laterally extending central plane of the rack.

Work vehicle axle device includes a wheel drive case utilizing a centrally disposed vertically extending first coupling portion, a centrally disposed vertically extending second coupling portion spaced from the first coupling portion and an input shaft located below an upper end of either the first or second coupling portions and being configured to transmit rotational power to wheels. The first and second coupling portions are configured to pivotally mount to the wheel drive case to a vehicle body of the work vehicle in a manner that allows the wheel drive case to pivot about an axis that, when viewed from above, is at least one of parallel to a front to back direction of the vehicle body and parallel to a centrally disposed front to back axis of the vehicle body.