A trailer includes a trailer frame having a hitch. A stationary support base is joined to the trailer frame. Two supports are slidably guided on the support base toward and away from each other. A wheel assembly is mounted to an end of each of the supports remote from the other support such that a distance between the wheel assemblies varies with movement of the supports on the support base. A locking device selectively locks each support to the support base in a first position where the wheel assemblies are furthest from each other and a second position where the wheel assemblies are closer to each other.

A trailer includes a trailer frame having a hitch. A stationary support base is joined to the trailer frame. Two supports are slidably guided on the support base toward and away from each other. A wheel assembly is mounted to an end of each of the supports remote from the other support such that a distance between the wheel assemblies varies with movement of the supports on the support base. A locking device selectively locks each support to the support base in a first position where the wheel assemblies are furthest from each other and a second position where the wheel assemblies are closer to each other.

A suspension system (2) comprising two flanges (10A, 10B), defining respective absolute reference positions, the second flange (10B) defining a relative reference position relative to the first flange (10A); and a core member (17), which is mobile only along a two degrees of freedom (M19, R19), a damper (21) applying an elastic return for bringing back the core member (17) to two degree reference positions; wherein the positions of the flanges (10A, 10B) and of the core member (17) are mechanically linked so that: when the flanges (10A, 10B) are in the absolute reference positions, the core member (17) is in the two degree reference positions; when the second flange (10B) is away from the relative reference position, the core member is away from the first degree reference position; and when the flanges (10A, 10B) are away from the absolute reference positions, the core member is away from the second degree reference position.

A suspension system (2) comprising two flanges (10A, 10B), defining respective absolute reference positions, the second flange (10B) defining a relative reference position relative to the first flange (10A); and a core member (17), which is mobile only along a two degrees of freedom (M19, R19), a damper (21) applying an elastic return for bringing back the core member (17) to two degree reference positions; wherein the positions of the flanges (10A, 10B) and of the core member (17) are mechanically linked so that: when the flanges (10A, 10B) are in the absolute reference positions, the core member (17) is in the two degree reference positions; when the second flange (10B) is away from the relative reference position, the core member is away from the first degree reference position; and when the flanges (10A, 10B) are away from the absolute reference positions, the core member is away from the second degree reference position.

A vehicle includes a platform, a first axle beam attached to a front end of the platform at a first pivot, and a second axle beam attached to a rear end of the platform at a second pivot. The first axle beam is rotatable independently of the platform. The second axle beam is rotatable independently of the platform. The vehicle includes a plurality of first wheels fixed to the first axle beam and configured to move the platform. The vehicle includes a plurality of second wheels fixed to the second axle beam and configured to move the platform. The vehicle includes a link attached to one side of the platform at a third pivot. The link is movable about the third pivot independently of the beams to constrain movement of the platform in response to articulation of the first axle beam and/or the second axle beam.

A vehicle suspension position adjustment arrangement including a frame member having a plurality of apertures, and a trailing arm having a first end pivotally coupled to a slide member and a second end biased away from the frame member. A locking pin movable between an unlocked position where the locking pin is withdrawn from one of the apertures and the slide member is free to slide along the frame member, and a locked position where the locking pin engages one of the apertures preventing the slide member from sliding along the frame member, and a plurality of sensors spaced along the frame member, wherein a single sensor of the plurality of sensors is configured to sense both the locking condition of the locking pin and the location of the locking pin along the frame member.

A vehicle body inclination controller includes an air spring, an air reservoir, valve devices, an acquisition section, and a determination section. The determination section compares, with a predetermined threshold, at least one of a value of a ratio between supply control information of a supply valve and exhaust control information of an exhaust valve in the same valve device among the valve devices, a value of a ratio between pieces of the supply control information of the supply valves of different valve devices among the valve devices, or a value of a ratio between pieces of the exhaust control information of the exhaust valves of different valve devices among the valve devices, and determines that a failure occurs in the same valve device or at least one of the different valve devices when the value of the ratio exceeds the predetermined threshold.

A vehicle body inclination controller includes an air spring, an air reservoir, valve devices, an acquisition section, and a determination section. The determination section compares, with a predetermined threshold, at least one of a value of a ratio between supply control information of a supply valve and exhaust control information of an exhaust valve in the same valve device among the valve devices, a value of a ratio between pieces of the supply control information of the supply valves of different valve devices among the valve devices, or a value of a ratio between pieces of the exhaust control information of the exhaust valves of different valve devices among the valve devices, and determines that a failure occurs in the same valve device or at least one of the different valve devices when the value of the ratio exceeds the predetermined threshold.

1. A device for decoupling vibrations between two systems and a working machine

2. A device together with an assigned working machine for decoupling vibrations between two systems (2, 4) in the form of spring-mass oscillators, of which one system (2) is assigned to a motion machine and the other system (4) is assigned to an operator operating the motion machine, which other system (4) at least partially performs motions about a transverse axis (Q) during driving motions of the motion machine and in doing so is subject to vertical motions in the direction of a vertical axis (z) at an absolute vertical speed (.sub.z1,1), which serves as an input variable of control devices and/or regulating devices, which control a damping system (8) of the one (2) and/or the other (4) system to compensate for the vibrations, is characterized in that the respective pitch motion of the other system (4) is detected by at least one rotation rate sensor, the respective measured value (.sub.1) of which, preferably amplified by only a predeterminable factor (L.sub.1), results in the absolute vertical speed (.sub.z1,1) as input variable.

An active suspension system comprises at least one biasing device configured to support a body from a structure, and at least one motor. A magnetorheological (MR) fluid clutch apparatus(es) is coupled to the at least one motor to receive torque from the motor, the MR fluid clutch apparatus controllable to transmit a variable amount of torque. A mechanism is between the at least one MR fluid clutch apparatus and the body to convert the torque received from the at least one MR fluid clutch apparatus into a force on the body. Sensor(s) provide information indicative of a state of the body or structure. A controller receives the information indicative of the state of the body or structure and for outputting a signal to control the at least one MR fluid clutch apparatus in exerting a desired force on the body to control movement of the body according to a desired movement behavior.