Abstract: A vehicle includes a chassis, an axle pivotally coupled to the chassis such that the axle can tilt from side to side relative to the chassis, a tilt-angle sensor configured to detect a tilt angle of the axle relative to the chassis, and steerable hubs carried by the axle. Each hub is configured to rotate about steering axes relative to the axle, and a steering-angle sensor is configured to detect a steering angle of at least one hub relative to the axle. A control system limits a maximum steering angle of the hubs based at least in part on a size of tires or tracks carried by the steerable hubs and the detected tilt angle of the axle. A method includes detecting a tilt angle of the axle relative to the chassis and limiting the maximum steering angle of the hubs.

Abstract: The present application provides a movement buffering control system and method for forklift tilt cylinder based on angle compensation in the field of forklift control, which includes a tilt cylinder configured to control forward and backward tilting of a mast of a forklift and a lift cylinder configured to control the lifting of a fork, and further includes a controller, wherein a signal input terminal of the controller is connected to a first angle sensor to measure a tilt angle of the mast relative to a vertical plane, a second angle sensor to measure a tilt angle of a vehicle body relative to a level ground, and a pressure sensor, and wherein a signal output terminal of the controller is connected to a display, a forward-tilting proportional valve to control the oil for forward-tilting of the tilt cylinder.

Abstract: A system and methods are provided for a suspension system of an off-road vehicle that allows the springs to be mounted remotely, in any location on the vehicle, enabling the use of spring sizes, spring rates, motion ratios, and damping profiles that would be impractical with traditional suspension designs. The suspension system includes a hydraulic cylinder coupled between a suspension component and a chassis, in lieu of a conventional spring. The hydraulic cylinder is in fluid communication with another, second hydraulic cylinder, by way of a hydraulic hose. The second hydraulic cylinder presses against a suspension spring that is in contact with a fixed spring stop, thereby transferring spring forces to the wheel. Alternatively, the spring stop may comprise a control actuator that moves, enabling active control over spring load.

Abstract: A cart includes a chassis configured to carry a basket and a support structure having a carrier coupled to the chassis, a pair of rear legs coupled to the carrier, and a pair of front legs coupled to the carrier, at least one of the pair of front legs and the pair of rear legs having motor driven wheels coupled thereto, at least one carrier actuator configured to move the chassis relative to the carrier, the pair of front legs including actuators which are configured to extend and retract the pair of front legs, and the pair of rear legs including actuators which are configured to extend and retract the pair of rear legs. The cart includes at least one sensor supported on the cart. The cart also includes at least one processing unit configured with software instructions that enable autonomous self-loading of the cart into a vehicle.

Abstract: The invention relates to a lifting machine (1) comprising a lifting arm (3), a rolling chassis (2) equipped with at least one front axle (5) and one rear axle (6), and a sensor for measuring the tilt of the lifting arm (3) in relation to the chassis (2), the rear axle (6) being pivotably mounted around an axis that is parallel to the longitudinal axis of the machine (1). The rear pivoting axle (6) is mounted to freely pivot inside an angular range defined by two abutments supported by said chassis (2), the front axle (5) is coupled to the chassis (2) by a pivoting connection with an axis that is parallel to the longitudinal axis of the machine (1) and is equipped with an activatable/deactivatable suspension (9) in order to allow the relative pivoting between the front axle (5) and the chassis (2) to be damped, said suspension (9) being deactivated at least when the angle value measured by sensor (4) for measuring the tilt of the lifting arm (3) is greater than a predetermined threshold value.

Abstract: A hydropneumatic suspension system for vehicles, at least consisting of an axle suspension (10) and a cabin suspension (12), which for supplying them with pressurized fluid, can be connected to a pressure supply source, is characterized in that both the axle suspension (10) and the cabin suspension (12) can be actuated jointly by means of an control device (14), and in that, by means of a priority detection system (16) involving a sensor device (18) for the respective suspension (10, 12), the supply with pressurized fluid of the one suspension (10, 12) takes precedence depending on demand over the other suspension (12, 10).

Abstract: A fully electric lift device includes a base assembly, a lift assembly, a platform assembly, tractive elements, an energy storage device, and a control system. The lift assembly is coupled with the base assembly and is driven by an electric linear actuator for a lifting function. The platform assembly is positioned at a top of the lift assembly and can be raised or lowered as the lift assembly performs the lifting function. The tractive elements are rotatably coupled with the base assembly and can be driven by an electric wheel motor to perform a driving function. The control system includes a controller that operates the electric wheel motor and the electric linear actuator to perform the driving function and the lifting function using power drawn from the energy storage device. The lift assembly and the tractive elements use only electrical energy to perform the lifting and driving functions.

Abstract: A controller for use with a working machine includes a machine body and a load handling apparatus coupled to the machine body and moveable by a lift actuator and a sway actuator. The controller receives a signal representative of the position of the load handling apparatus and a signal representative of a stability of the working machine. The controller determines a movement range of the load handling apparatus about the sway axis and issues a signal for use by an element of the working machine. The controller restricts or prevents movement of the load handling apparatus outside of the permissible movement range relative to the lateral reference orientation, the permissible range being dependent on the signal representative of the position of the load handling apparatus with respect to the machine body or longitudinal reference orientation and the signal representative of the stability of the machine.

Abstract: An assembly for a hydraulically suspended vehicle axle may have a central housing, and at least two hydraulic suspension components supported on the central housing and fluidly connected to one another by a fluid line extending at least partially through the central housing.

Abstract: A system and method for controlling a vehicle, where the system includes independent driving modules each including a connection device having a rotation center spaced apart from a driving shaft in a forward/rearward direction and configured to connect the wheel and a vehicle body to move the wheel in the forward/rearward or an upward/downward direction, a shock absorber extending in a longitudinal direction and configured to contract or stretch, to connect the vehicle body and the connection device, and to restrict an upward/downward movement of the connection device, and a driving device configured to rotate the wheel, a road surface detector configured to detect a height displacement or a state of a road, and a controller configured to control velocities of the front and rear wheels of the independent driving modules, and to change a height of the vehicle based on the height displacement or the state of the road.

Abstract: A method for operating a pneumatic system having a compressed air supply system and an air spring system includes determining at least one deflection of at least one air spring of the pneumatic system. The air spring is configured to be connected to a gallery in a selectively gas-conveying manner via a valve. The method further includes determining at least one bellows volume of a spring bellows of the at least one air spring based on the at least one determined deflection, indicating a pneumatic surrogate model for the at least one bellows volume and/or for a pressure accumulator volume of a pressure accumulator of the pneumatic system based on a mass flow balance for a balance volume, and calculating, based on the pneumatic surrogate model, at least one pressure value of the at least one bellows volume, the pressure accumulator volume, and/or the balance volume.

Abstract: A self-aligning tool guide has a holder for securing a portable power tool for working on a ceiling, a lifting mechanism, and a self-balancing chassis. The holder is mounted on the lifting mechanism. The lifting mechanism has a propulsion system for raising the holder parallel to a lifting axis. The self-balancing chassis has two wheels on a wheel axis, a drive coupled to the two wheels, and a steering system. A contact sensor serves for detecting an indirect contact of the holder with the ceiling. The chassis has a brake. A controller has a mode in which the brake is activated and the balancing of the self-balancing chassis is deactivated.

Abstract: The present disclosure relates to a door protection system (2) for a vehicle (1). The door protection system (2) includes sensor means (10, 11) for detecting an object (O) proximal to the vehicle (1). Processing means (14) are provided to process a signal (S1, S2) received from said sensor means (10, 11) to determine if the detected object (O) obstructs opening of a vehicle door (5, 6). Output means are provided for outputting a suspension control signal (SSUS) to control operation of a vehicle suspension (7) dependence on determining that the detected object (O) obstructs opening of the vehicle door (5, 6). The present disclosure also relates to a vehicle (1); to a method of controlling operation of a vehicle suspension (7); and to an electronic processor (14).

Abstract: Air damping systems for lift axles are described herein. In some embodiments, lift axle systems configured in accordance with the present technology can include one or more air springs for carrying vehicle sprung mass (“load springs”) and one or more air springs (or, for example, air cylinders) for raising the lift axle (“lift springs”). One or more air lines can be connected between the load springs and the lift springs so that, in operation, compression and extension of the load springs in response to axle movement causes pressurized air to flow back and forth between the load springs and the lift springs. As a result, the lift springs provide an additional volume to receive the pressurized air and provide an opposing spring force to the suspension. Additionally, in some embodiments the air line or lines extending between the load springs and the lift springs can include an air flow restriction and/or other air damping feature.

Abstract: A vehicle includes a support structure and a suspension for an oscillatingly supported, rigid axle body. The suspension has a suspension device which is located between the axle body and the support structure and acts in a height direction of the vehicle. The vehicle further includes a plurality of coupling sites and a transverse link extending in a transverse direction of the vehicle. The transverse link is coupled to the support structure via a first link area and via a second link area and a pendulum support to the axle body. The transverse link includes a third link area which, with reference to the pendulum support in the transverse direction of the vehicle, is located opposite the first link area and is flexibly connected with a coupling site of the suspension device.

Abstract: A vehicle includes two wheels on each side, with the pair of wheels on the left side mounted on a single bar that pivots up and down about a pivot point (left side wheel pivot plate) fastened to an axle that runs through the vehicle chassis from side-to-side. A pair wheels on the right side is similarly mounted (right side wheel pivot plate) on the right end of the axle. A stabilizer bar and associated components are attached to the rear portion of both pivot plates limits the independence of the up and down motion of the pivot plates, stabilizing the vehicle.

Abstract: A suspension system is provided for a movable, supported vehicle axle. The suspension system includes a pair of hydraulic suspension cylinders, which are placed between the vehicle axle and a supporting vehicle structure. Each hydraulic suspension cylinder includes a first work chamber connected to a first pressure accumulator, and a second work chamber connected to a second pressure accumulator. A pressure-limiting valve is exposed to pressure in the first work chamber and has an outlet connected to the second pressure accumulator.

Abstract: An air ride suspension assembly or kit useful when converting a leaf spring suspension arrangement on a motor vehicle having a solid rear axle to one supported by the conversion suspension assembly is disclosed. The two sets of leaf springs which are attached to both sides of the vehicle chassis and the axle are removed and replaced by first and second upper support arms which are secured to the pre-existing leaf spring attachment sites on the chassis. The leading end of first and second lower trailing arms are each pivotally connected to a corresponding upper support arm proximate the front end of each support arm, and in the intermediate section of each trailing arm, are attached to the underlying axle by pivot connection means which permits the axle to pivot at right angles to the trailing arms. First and second inflatable air bladders are disposed between each support arm and trailing arm combination at a location rearward of the pivot connection means.

Abstract: A suspension system with inclination stabilization, in particular for use on heavy work vehicles, such as a dumper, where the front pair of wheels is mounted on a transverse rigid axle, has an axle (5) firmly connected with a Y-shaped frame (1) extending in the longitudinal direction along the central line (M) of the vehicle. The frame is suspended from the chassis of the vehicle, partly from a spherical bearing (4) disposed in the central line of the vehicle, partly via two spring units (2, 3) arranged symmetrically around the central line and a rod connection (7). The frame is additionally equipped with one or more laterally directed stabilization arms (6) which are confined by the chassis. This provides a suspension system which contains a very small number of components, which is stable, sturdy and resistant to wear, and which contains both springing, level adjustment and inclination stabilization.

Abstract: A vehicle has a chassis (11) with front and rear axles (12, 13) suspended from the chassis for vertical and roll movement relative to the chassis. The axles are each mounted on the chassis via an upper pivotal mounting means in the form of an upper pair of arms (12a, 13a) which is pivoted on the chassis for vertical pivoting movement relative thereto and which carry an axle support (15, 16) on which the axle (12, 13) is free to pivot in the roll mode. A second lower pair of pivoting arms (12b, 13b) also connect each axle (12, 13) to the chassis to control fore and aft movement of the axle relative to the chassis. The line of action of the forces (F1-F4) applied to the chassis (11) by the upper arms (12a, 13a) at one end of the chassis are be substantially aligned with the line of action of the forces applied to the chassis by the lower arms (12b, 13b) at the other end of the chassis to reduce and tendency for the chassis to be twisted by these forces.

Abstract: System to control the trim of motorcycles with three or four wheels, the motorcycle having two couples of front and rear wheels, or one front wheel and a couple of rear wheels, or a couple of front wheels and one rear wheel.

Abstract: The invention relates to an active chassis stabilization system including a hydraulic actuator, a pump for acting upon the actuator with a hydraulic pressure, a reservoir for receiving hydraulic fluid, and a return line for a fluid flow from the actuator to the reservoir. Provided in the return line is a check valve which blocks the fluid flow from the reservoir to the actuator and allows the fluid flow from the actuator to the reservoir as of a predeterminable return pressure.

Abstract: A hydraulic suspension system for a tractor includes a first rock shaft generally parallel to a second rock shaft, a frame rail attached to the first rock shaft and the second rock shaft, a first trailing arm attached to the first rock shaft and having fixed rotation with the first rock shaft, and a second trailing arm attached to the second rock shaft and having fixed rotation with the second rock shaft. The suspension system also includes a first rear axle attached to the first trailing arm, and a second rear axle attached to the second trailing arm. A hydraulic cylinder is connected to the first rock shaft and to the second rock shaft.

Abstract: A vehicle, has a chassis, at least one front axle assigned to the chassis and carrying land wheels, a rear axle located downstream of the front axle, relative to a direction of forward travel and carrying at least two steerable wheels, wherein the rear axle is hingedly connected to the chassis such that it is movable to and fro transversely to the direction of travel, and includes at least one axle body, wherein regions of the chassis are assigned to the wheels of the rear axle in an at partially adjacent manner, a pendulum device coupling the rear axle of the chassis and enabling a displacement of the rear axle that is oriented transversely to the direction of travel, and a swivel device coupling each wheel of the rear axle to the axle body of the rear axle and enabling a displacement of each wheel that is oriented transversely to the direction of travel.

Abstract: The present invention relates to an axle suspension for heavy vehicles, in particular trucks, comprising an axle beam which bears axle parts projecting over at oppositely disposed sides, each axle part preferably bearing a wheel drive; an axle beam bearing which permits upward and downward movements of the axle beam as well as pendular movements of the axle beam around a substantially lying pendular axis transverse to the longitudinal direction of the axle parts; a spring device for the resilient support of the upward and downward movements of the axle beam at a vehicle frame; and also a pendular damping device for the damping of the pendular movements of the axle beam.

Abstract: An active suspension system for a rigid beam tractor axle in which the axle is connected to the chassis by two orthogonally oriented pivot points and axle movement is controlled by double-acting suspension actuators managed by a control system to improve the ride and handling characteristics of the tractor.

Abstract: A caster suspension system for a multi-axle transport vehicle for moving heavy loads includes two fluid activated cylinders and two spaced apart arms for each wheel and axle set which allow the transport vehicle to be raised and lowered with respect to the roadway. The suspension system mechanically stabilizes the axles with respect to the transport vehicle thereby reducing axle yaw and allowing higher transport speeds. As the transport vehicle moves, the suspension system casters into alignment with the direction of travel.

Abstract: It is described a system to control the trim of motorcycles with three or four wheels, including for each couple of wheels a system of levers (1) linking the hubs of the wheels v(7, 8) belonging to the couple, a shock absorber and one or more dampers (5) directly installed between said wheels v(7,8), or between said system of levers v(1) and a fixed point v(51) on the vehicle frame or chassis.

Abstract: A suspension system for a rigid beam tractor axle in which the axle is connected to the chassis by two orthogonally oriented pivot points and axle movement is controlled by hydraulic cylinders to improve the ride and handling characteristics of the tractor.

Abstract: A working machine includes a body and an axle which is mounted so as to be moveable relative to the body, the axle carrying at or towards each end, a ground engaging wheel by means of which the machine can travel over the ground, the machine including a speed sensor sensitive to the machine ground speed, and there being a hydraulic control system including at least one control actuator connected between the body and the axle for controlling movement of the axle relative to the body, and the hydraulic system further including at least one control valve which is operable to restrict fluid flow occurring as a result of the control actuator extending or retracting in response to axle movements relative to the body, depending upon the signal provided by the speed sensor, wherein the control valve is an electrically operated control valve, operated proportionally by a valve controller which responds to changes in machine speed, by adjusting the restriction to fluid flow so as to permit more fluid flow as the machin

Abstract: Method and arrangement including a vehicle having a first and a second vehicle section connected to an articulation that allows rotation about a vehicle longitudinal axis of the vehicle. A positioning arrangement is included that has at least one adjusting device in which the positioning arrangement includes operation by at least one adjusting device in order to rotate the first and second vehicle sections into a predefined basic position in relation to one another.

Abstract: An active suspension system for a rigid beam tractor axle in which the axle is connected to the chassis by two orthogonally oriented pivot points and axle movement is controlled by double-acting suspension actuators managed by a control system to improve the ride and handling characterstics of the tractor.

Abstract: A suspension system for a rigid beam tractor axle in which the axle is connected to the chassis by two orthogonally oriented pivot points and axle movement is controlled by hydraulic cylinders to improve the ride and handling characteristics of the tractor.

Abstract: A vehicle having a chassis (1) and at least two mutually separated wheels arranged on a first side of the chassis and two mutually separated wheels on the opposite, second side of the chassis where the wheels on the first side are rotatable about axes that are substantially fixed in position in a vertical plane relative to the chassis and the wheels (5) on the second side are arranged on a frame part (6) that is pivotably arranged relative to the chassis about a central longitudinal axis (8) running between the first and second sides of the vehicle to create a stability area for the vehicle in the shape of a triangle in the horizontal plane.

Abstract: A suspension system for a multi-axle transport vehicle for moving heavy loads includes two fluid activated cylinders and two spaced apart arms for each wheel and axle set which allow the transport vehicle to be raised and lowered with respect to the roadway. The suspension system mechanically stabilizes the axles with respect to the transport vehicle thereby reducing axle yaw and allowing higher transport speeds.

Abstract: A chassis is described which is constructed of two lower side frames which at each end are provided with a wheel or caterpillar track. On each of the two lower side members, there is a horizontal bearing. Each of these bearings are connected to an upper vertical side member which at their upper end is connected to two parallel cross members through horizontal bearings for the development of a parallelogram connection. Between the lower and upper side members, there are two double-acting hydraulic cylinders. These can be connected in parallel in order to make a weight distribution possible. By means of a regulation valve between pressure side and suction side, respectively, on the double-acting hydraulic cylinders the upper part of the chassis can swing back and forth in the longitudinal direction of the side members.

Abstract: An axle mounting assembly includes a steerable axle mounted on an axle support and having a pair of opposing steerable wheels pivotally connected to the respective transverse ends of said steerable axle for pivotal movement relative thereto about respective wheel pivot axes. A substantially rigid connecting member extends between and is attached to the axle support and a steerable element of the steerable axle. The steerable axle is attached to the axle support by first, second and third flexible couplings. Each coupling provides for three planes of movement, the first flexible coupling attaching the axle to the axle support rearward of said axle, the second flexible coupling attaching the axle to a first end of a link forward of said axle and the third flexible coupling attaching a second end of said link to said axle support upwardly of said axle.

Abstract: A control device, for a truck having an oscillating axle, includes means to determine at least one physical parameter (G) of the truck, and at least one dynamic parameter (F) of the truck, and a device (101) actively to improve the lateral stability of the truck.

Abstract: An industrial vehicle includes a vehicle body, a pair of rear wheels, a rear axle for supporting the rear wheels, a lock cylinder, a counterweight and a coupling portion. The rear axle is supported to be pivotable relative to the vehicle body. The lock cylinder is located between the vehicle body and the rear axle. The lock cylinder limits pivoting of the rear axle. The counterweight forms a rear portion of the vehicle body. The counter weight supports the rear axle. The coupling portion is integrally formed with the counterweight to couple the fluid pressure cylinder with the vehicle body. This reduces the number of components and the manufacturing steps of the industrial vehicle.

Abstract: In a three-wheel vehicle, right and left suspension arms are independently attached to a front swinging shaft and a rear swinging shaft so that the suspension arms can swing vertically, and the front swinging shaft and the rear swinging shaft function as a swinging shaft for swinging the body frame. A swinging mechanism is provided to restrict lateral rotation of the body frame.

Abstract: An axle assembly is provided that includes an axle. The axle assembly may be of an inverted portal axle configuration. The axle includes a boss having a threaded aperture. A suspension component, such as a suspension arm, may be secured to the axle by a fastener received by the threaded aperture. A bracket may be arranged in engagement with the boss between the suspension arm and the axle. The bracket may be used to connect a torsion bar to the axle. The bracket includes an aperture with the fastener disposed within the bracket aperture. The fastener, which is common for the suspension arm and bracket, creates a clamping load on the bracket. Moreover, the suspension arm and the torsion bar bracket share a common boss.

Abstract: A suspension system for a multi-axle transport vehicle for moving heavy loads includes two fluid activated cylinders and two spaced apart arms for each wheel and axle set which allow the transport vehicle to be raised and lowered with respect to the roadway. The suspension system mechanically stabilizes the axles with respect to the transport vehicle thereby reducing axle yaw and allowing higher transport speeds.

Abstract: A front structure of a vehicle includes torque box members connecting front side frames and side sills, and front suspension member supports integrally provided on the torque box members. According to the structure of the present invention, the number of members is decreased, and the supporting rigidity of the front suspension member supports is increased. Furthermore, the geometry of the front suspension members supports is maintained by being prevented from local deformation by load application from the suspension member to the front suspension member supports. Thus, the excellent driving stability and maneuverability of the vehicle are assured.

Abstract: A damping system for an axle configured to pivot about a pivot point is provided. The damping system includes a first hydraulic cylinder having a first chamber and a second chamber and a second hydraulic cylinder having a third chamber and a fourth chamber. The first hydraulic cylinder is connected to the axle on one side of the pivot point and the second hydraulic cylinder is connected to the axle on the other side of the pivot point. A first fluid line connects the first chamber with the fourth chamber. A second fluid line connects the second chamber with the third chamber. A restricted fluid passageway connects the first fluid line and the second fluid line. A valve mechanism is disposed between the first fluid line and the second fluid line and is operable to release fluid from one of the first and second fluid lines when the pressure of the fluid in the one of the first and second fluid lines reaches a predetermined level.

Abstract: A vehicle air bag spring suspension system utilizing a swing arm as a member of a four-bar linkage subsystem wherein the suspension system with the airbag spring is compressed by the linkage opposite the swing arm's fulcral point relative the supported wheel. The air bag further serves as an inherently, partially dampened spring having a non-linear spring compression rate, so as to firmly keep the vehicle tires firmly planted to a rough surface. A second embodiment employs two actuator arms per wheel, wherein one inside actuator arm contacts a fixed air bag spring and cooperates with the other outside actuator arm and a rotating actuator shaft inside a frame tube to dampen wheel movement. A third embodiment employs the air spring supports directly connected to the bird cages or the housings for the bearings for both the front and rear axles.

Abstract: A swing suppressing device includes a damper that may switch over between an expansion/retraction enable condition and an expansion/retraction disable condition; and a link mechanism for coupling the damper and the axle with each other. The damper is disposed with its expansion/retraction direction substantially in a horizontal direction between the vehicle body and the axle, and with its one end being connected to the vehicle body and the other end being connected to the axle through the link mechanism. The link mechanism converts the swing motion in the up-and-down direction of the axle and transmits it to the damper.

Abstract: A damping system for an axle configured to pivot about a pivot point is provided. The damping system includes a first hydraulic cylinder having a first chamber and a second chamber and a second hydraulic cylinder having a third chamber and a fourth chamber. The first hydraulic cylinder is connected to the axle on one side of the pivot point and the second hydraulic cylinder is connected to the axle on the other side of the pivot point. A first fluid line connects the first chamber with the fourth chamber. A second fluid line connects the second chamber with the third chamber. A restricted fluid passageway connects the first fluid line and the second fluid line. A valve mechanism is disposed between the first fluid line and the second fluid line and is operable to release fluid from one of the first and second fluid lines when the pressure of the fluid in the one of the first and second fluid lines reaches a predetermined level.

Abstract: An axle assembly for a suspension system of a vehicle includes an elongate axle member adapted to rotatably receive wheels of a vehicle, a first arm member operatively associated with the axle member and flexibly connected, in use, to a chassis of the vehicle, a second arm member operatively associated with the axle member and flexibly connected, in use, to the chassis, and a first ram operatively associated with the first arm member and the axle member. The axle assembly is incorporated, in use, into a suspension system as a roll control component of the suspension system. The arrangement is such that when expansion or contraction of the ram is restricted, rotation of the axle member relative to the first arm member is restricted and roll of the vehicle is resisted, and when expansion or contraction of the ram is permitted, rotation of the axle member relative to the first arm member is permitted and articulation of the axle member is permitted.

Abstract: A stabilization and leveling system for an industrial vehicle of a type comprising a frame and at least one axle which is pivotally connected to the frame. The system comprises a linear actuator pivotally connected between the frame and the axle. The linear actuator includes a lock mechanism and a lock override system. The linear actuator is freely extendable and retractable when the lock mechanism is in a non-actuated condition, such that the axle is freely tiltable relative to the frame, and locked against free extension and retraction upon actuation of the lock mechanism, thereby preventing free movement of the linear actuator and resultant free tilting of the axle relative to the frame. The lock override system is actuable to override the lock mechanism to extend or retract the linear actuator to permit controlled tilt of the axle when it is locked.

Abstract: Disclosed herein is a vehicle including a frame, and a stabilizer apparatus including a pressure source, first and second fluid-actuated stabilizer assemblies connected respectively to the front and rear axles shiftably moveable on the frame, one of the first and second stabilizer assemblies normally being locked against extension and contraction in the absence of pressurization thereof by the pressure source, and the other of the first and second stabilizer assemblies normally being free to extend and contract in the absence of pressurization thereof by the pressure source, a hydraulic circuit connected between the pressure source and the first and second fluid activated stabilizer assemblies and including a flow controller operable between a first mode wherein the pressure source is disconnected from the first and second stabilizer assemblies, whereby the one of the stabilizer assemblies is locked against extension and retraction, thereby locking the axle connected thereto against shifting movement relative