This oscillating axle (3) for a lifting device (1) comprises an axle bridge (5) at the ends of which are mounted two ground connection members (7), an oscillation axis (X3), a left jack (9) and a right jack (11), each jack (9, 11) having a rod (90, 110) in contact with the bridge (5) and a body (92, 112) fixed on a fixed part (13) of a chassis (2) of the lifting device (1), the body (92, 112) forming a chamber (94, 114) in which the rod (90, 110) moves. The axle comprises a hydraulic circuit (15) interconnecting the chambers (92, 112) of the left (9) and right (11) jacks, in which a fluid is present at a given pressure, making it possible to press the rods (90, 110) of the left jack (9) and of the right jack (11) against the bridge (5), and at least one solenoid valve (150, 152) on a branch (15A) of the hydraulic circuit (15) connected to the chamber (94) of the left jack (9), and at least one solenoid valve (154, 156) on a branch (15B) of the hydraulic circuit (15) connected to the chamber (114) of the right jack (11), wherein each of these solenoid valves (150, 152, 154, 156) may be positioned in an open position, in which fluid may flow freely, and a closed position, in which the fluid is trapped in the chamber (94, 114) of the corresponding jack (9, 11). Each of the chambers (94, 114) of the left jack (9) and of the right jack (11) has a pressure sensor (23, 25) designed to measure the pressure of the fluid in each of the chambers (94, 114). Control means (21) are provided to detect a pressure in one of the chambers (94, 114) that is greater than a first threshold, and/or a differential between the pressures in each of the chambers (94, 114) that is greater than a second threshold, so as to detect the blocking of a solenoid valve (150, 152, 154, 156) in the closed position, and to initiate a safety procedure.

A rear axle assembly designed to fit within a predefined rear axle envelope of a transportation vehicle. The rear axle assembly comprising first and second double wheel hubs each supporting a pair of tires, a rear axial offset with respect to a central axis of the rear axle assembly, a rear axle input for receiving a drive input, first and second portal housings which facilitate respectively connecting the rear axial the first and the second double wheel hubs, a four-point control arm for connecting the rear axle to a chassis, first and second spring carriers each carrying a smaller and larger diameter air bellows, first and second longitudinal arms which interconnected the rear axle to the chassis, and first and second shock absorbers each located generally at or adjacent to the central axis and radially between the first double wheel hub and the first spring carrier.

A swing arm suspension for suspending a rear drive wheel in a three-wheeled electric vehicle has an adjustable arm which allows the tension on the drive belt to be easily adjusted for installing or removing the drive belt or adjusting tension for operation.

The invention relates to an axle assembly and a heavy-duty vehicle having such an axle assembly, which comprises a pivot bearing having a substantially vertically extending steering axis of rotation, a bogie rotatably arranged about the steering axis of rotation, a rocker mounted on the bogie so as to be pivotable about a substantially horizontal pivot axis, a wheel carrier operatively connected to the rocker having at least one wheel rotatably mounted thereon about a wheel axis of rotation, the wheel axis of rotation extending substantially horizontally and, when driving straight ahead, substantially transversely to the direction of travel, and a pneumatically actuatable power device, which is arranged between the rocker and the bogie.

The invention provides a vehicle comprising a frame, at least one front wheel and at least one rear wheel, wherein the total number of front wheels plus rear wheels is at least three, drive means for driving at least one of the front wheels and rear wheels, a seat for a driver of the vehicle, and at least one fall prevention element on at least one longitudinal side of the seat to prevent, in a closed position of the fall prevention element, a driver sitting on the seat from falling off the seat and out of the vehicle. The fall prevention element is displaceable between an open position in which the driver can freely take a seat on the seat from the outer side of the vehicle via the space which, in the closed position, is occupied by the fall prevention element, or can step out of the vehicle, and the closed position. More specifically, the fall prevention element is slidable between the open position and the closed position, wherein the position of the fall prevention element in the open position, viewed in the viewing direction of a driver sitting on the seat, is situated behind the position of the fall prevention element in the closed position.

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.

A control method in a motor grader including a running wheel, an inclination mechanism which inclines the running wheel, an operation portion, and a sensor capable of detecting whether or not the running wheel is at an erect position includes outputting from a controller, a control signal for driving the inclination mechanism in response to an operation command in accordance with a state of operation onto the operation portion and stopping output of the control signal in response to the operation command when the sensor detects the erect position.

Provided is a transportation vehicle, comprising a chassis (10) and a wheelset structure (20). Each side of the chassis (10) is pivotally connected to at least one wheelset structure (20). The wheelset structure (20) comprises a connecting member (23) and two wheels (21, 22) pivotally arranged on the connecting member (23), the connecting member (23) having a pivot point used for pivotally connecting to the chassis (10), and the pivot point being located between the two wheels (21, 22). By changing the connection manner between the wheels and the chassis, when the vehicle is travelling on the uneven ground, the heights of the two wheels from the ground are automatically adjusted by gravity pressing down so as to facilitate the wheels contacting the ground.

A knuckle-boom loader trailer has a trailer frame, a heavy equipment package of a knuckle-boom crane and an operator cab mounted on top of the trailer frame, and a walking-beam suspension propping up the trailer frame.

A telehandler comprising: a chassis; an axle supporting the chassis; a pivotal connection between the axle and the chassis; and a chassis positioning system. The pivotal connection is configured to enable rotation of the chassis relative to the axle for varying a chassis-axle tilt angle defined between a longitudinal axis of the axle and the chassis. The chassis positioning system comprises: a chassis angle sensor configured to measure an angular position of the chassis relative to gravity; an actuator configured to rotate the chassis relative to the axle at the pivotal connection; and a control system configured, in a first mode, to control the actuator to thereby control the chassis-axle tilt angle based on the measured angular position of the chassis.