A lift machine includes a base having a first end and a second end, a first assembly, and a second assembly. The first end has first and second pivot points defining a first lateral axis. The second end has third and fourth pivot points defining a second lateral axis. The first assembly is pivotably coupled to the first and second pivot points. The first assembly extends away from the base in a first direction such that first and second tractive elements are longitudinally offset from the first lateral axis and spaced from the first end of the base. The second assembly is pivotably coupled to the third and fourth pivot points. The second assembly extends away from the base in a second direction such that third and fourth tractive elements are longitudinally offset from the second lateral axis and spaced from the second end of the base.

An air suspension system includes: an air suspension interposed between a vehicle body and an axle to adjust a vehicle height according to supply and exhaust of air; a compressor that compresses air; a tank that stores the air compressed by the compressor; and an air dryer provided on an ejection side of the compressor. When the tank has a predetermined pressure or less after air is supplied from the tank to the air suspension, a pressure of the tank is increased by the compressor.

Methods and systems are provided for estimation of a ride height of a vehicle axle via a linear displacement sensor. In one example, a method may include, during motion of vehicle wheels, estimating a change in ride height of an axle based on a distance of axial movement between a first axle constant velocity universal (CV) joint and a differential unit.

A vehicle includes a frame, a body supported by the frame, a prime mover mounted to the frame, at least one axle connected to the frame, a suspension system connecting the at least one axle to the frame, and a load sensing and control system including at least one load sensor connected to the suspension system and a controller operatively connected to the at least one load sensor and the prime mover. The controller being operable to calculate a vehicle loading factor before the vehicle moves and to prevent operation of the prime mover if the vehicle loading factor that exceeds a selected load threshold.

A device for determining amass of a vehicle includes vehicle height sensors respectively mounted on left front and rear wheels or respectively mounted on right front and rear wheels to sense a vehicle height of the vehicle, a passenger detecting sensor for sensing the number of passengers boarded the vehicle and boarded locations of the passengers, and a controller that calculates a load based on the vehicle height, calculates a load conversion factor based on each offset set based on a boarded location of each passenger and the number of passengers, and calculates a mass change amount based on the load and the load conversion factor. The device may determine an accurate mass of the vehicle when the vehicle height sensors are not mounted on all four wheels, improve a performance of the vehicle by reflecting the determined mass to vehicle control, and reduce tuning parameters for vehicle control.

ThE load weight derivation device comprises a calculation unit that calculates a contraction amount of a spring in a suspension positioned between a vehicle body and a vehicle wheel, and a derivation unit that derives the weight loaded on the vehicle body using the contraction amount calculated by the calculation unit.

The present invention relates to a control unit for determining a value indicative of a load bearing capability of a ground segment supporting a vehicle. The control unit is configured to issue a control signal to the vehicle to thereby impart a motion change of the vehicle, and receive response information from the vehicle indicative of the vehicle's response to the imparted motion change. The control unit is further configured to, based on the response information, determine a vertical position change of at least one wheel of the vehicle, and based on the determined vertical position change and the imparted motion change, determine the value indicative of the load bearing capability of the ground segment.

Methods and apparatus to compensate for body roll in vehicle weight calculations are disclosed. An example method includes receiving sensor data from sensors of a vehicle, determining a weight of the vehicle and determining a body roll of the vehicle. The example method further includes comparing the body roll to a threshold and, if the body roll satisfies the threshold, adjusting the determined weight of the vehicle based on the determined body roll and properties of a suspension system of the vehicle.

The present invention relates to a construction machine, in particular a ground milling machine, with a drive motor, a machine frame supported by a traveling gear with traveling devices, and an operator platform arranged on the machine frame, wherein the traveling gear has a front and a rear traveling gear axle, and wherein at least one of the traveling gear axles is configured as a locking axle with two traveling devices which are height-adjustable relative to the machine frame independently of one another and can be locked in an operating position, and at least one further traveling gear axle is configured as a swing axle such that the traveling devices of the swing axle are jointly height-adjustable relative to the machine frame, and a height adjustment of one traveling device of the swing axle leads to an opposite height adjustment of another traveling device of the swing axle, wherein a control device is provided which is configured such that it detects the load on at least one of the traveling devices of the locking axle as a control variable and, when the load on the traveling device of the locking axle falls below or exceeds a threshold value, blocks the joint height adjustment of the traveling devices of the swing axle relative to the machine frame. Moreover, the present invention relates to increasing the stability of such a construction machine.

The invention relates to a method for determining a parameter indicative of a road capability of a road segment (18) supporting a vehicle (10). The vehicle (10) comprises a plurality of ground engaging members (12, 14, 16, 38, 40, 42). The method comprises: —for each ground engaging member (14, 42) in a sub-set of the plurality of ground engaging members (12, 14, 16, 38, 40, 42), setting a contact force (N.sub.14,S, N.sub.42,S) between the ground engaging member (12, 14, 16, 38, 40, 42) and the road segment (18); —determining a target global load vector (G) to be imparted to the vehicle (10), the target global load vector (G) comprising at least a vertical load and an inclining moment, —determining contact forces (N.sub.12, N.sub.16, N.sub.38, N.sub.40) for the ground engaging members (12, 16, 38, 40) of the plurality of ground engaging members (12, 14, 16, 38, 40, 42) which are not in the sub-set such that the contact forces (N.sub.12, N.sub.14,S, N.sub.16, N.sub.38, N.sub.40, N.sub.42,S) for the plurality of ground engaging members (12, 14, 16, 38, 40, 42) together result in a resulting global load vector (R), a difference measure (DM) between the resulting global load vector (R) and the target global load vector (G) being equal to or lower than a predetermined difference measure threshold, —applying the contact force (N.sub.12, N.sub.14,S, N.sub.16, N.sub.38, N.sub.40, N.sub.42,S) to each ground engaging member of the plurality of ground engaging members (12, 14, 16, 38, 40, 42), —for at least one ground engaging member (14, 42) in the sub-set, determining a parameter indicative of the road capability of the road segment (18) associated with the ground engaging member (14, 42).