A spring device (100) for a wheel suspension (200) for a vehicle (300) is described. The spring device (100) comprises an elongated elastic torsion device (102) configured to rotate about a central longitudinal axis (R) at a load (L). The torsion device (102) comprises elongated elastic elements (130) that comprise an internal cavity (132).

The present invention relates to a novel robot drive train that is robust, and low cost. The drive train is capable of ascending obstacles greater than the height of its wheels, protects the robot against shocks/vibration, and is highly maneuverable, such as able to execute a zero-point turn. To control the bogie in a variety of scenarios, a novel mechanism is used to selectively limit the articulation range of the bogie and/or programmatically apply a preload to the bogie axle.

A trailer for towing by a power vehicle is provided and generally includes a frame and a tandem wheel assembly. The frame forms an undercarriage chassis which the tandem wheel assembly is positioned there under. The undercarriage chassis includes a steerable rear wheel assembly, a steerable front wheel assembly, and an extension assembly moving the front wheel assembly between trailing position and a self-propelled position where the rear wheel assembly and the front wheel assembly are positioned to equally support the undercarriage chassis.

A suspension axle for a farm equipment is provided. The suspension axle includes an axle beam having two ends. The two ends are configured to be simply supported to the farm equipment. The suspension axle also includes a first mounting arm coupled to the axle beam between the two ends and extending outwardly from the axle beam. The suspension axle also includes a first mounting bracket pivotably coupled to the first mounting arm at a first horizontal pivot axis. The suspension axle also includes a first suspension member coupled to at least one of the axle beam and the first mounting arm.

A vehicle lowering system having a cargo surface with an adjacent pivoting arm is connected to a vehicle at a pivot point. The pivoting arm moves between a raised and a lowered position by an actuator that is affixed to a frame and the pivoting arm. The frame has an upper portion and a lower portion that provides structure for the portion of the frame that is beyond the pivot point and actuator. The pivot arm has a spindle that holds and allows a wheel to rotate. The spindle has an axis that is always located above the cargo surface. The actuator is movable between an extended position and a retracted position. When the actuator moves between the extended and retracted position, the pivoting arm moves the vehicle between a raised and a lowered position.

A suspension system for supporting a ground engaging member relative to a frame is provided. The suspension system includes a torsion axle assembly including an arm, an axle coupled to the ground engaging member and connected to the arm, a shaft connected to the arm and a tube that is connected to the frame. The tube is configured such that at least a portion of the shaft is received in the tube and supported by the tube for rotation relative to the tube and the frame. A lockout assembly includes a coupling mechanism that is selectively operable to fix the shaft against rotational movement with respect to the tube.

A damping mechanism and a vehicle are provided. The damping mechanism includes: a spindle; an elastic cushion assembly used to couple the spindle and the vehicle body; a coupling arm having a first end used to be fixedly coupled to an axle of the wheel and a second end pivotally coupled to the spindle; and a locking assembly provided between the coupling arm and the spindle and used to switch the coupling arm and the spindle between at least two locking states and a unlocking state. In the unlocking state, the coupling arm is rotatable, and in the locking states, the coupling arm is locked; in each of the locking states, the coupling arm is in different locking positions relative to the spindle; and when the coupling arm is in different locking positions, the coupling arm is at different angles to a horizontal plane.

A chassis for an electrically powered vehicle, including a front wheel suspension and a rear wheel suspension, each having longitudinal control arms arranged on both sides and a torsion spring actively connected to the longitudinal control arms. The chassis includes a battery housing receiving a propulsion battery. A front transverse carrier extends between the respective longitudinal control arms of the front wheel suspension, and a rear transverse carrier extends between the respective longitudinal control arms of the rear wheel suspension. The respective transverse carriers are rigidly connected to the battery housing and couple the longitudinal control arms and the torsion spring.

Described herein is an axle assembly and method of fabrication thereof. The axle assembly includes an axle having a first geometric shape housed within an axle housing having a second geometric shape. A shock absorber is located between the axle and the axle housing. The shock absorber supports the axle within the axle housing and comprises a first material and comprises a multi-sided configuration. The first geometric shape and the second geometric shape comprising polygons.

The present invention relates to a novel robot drive train that is robust, and low cost. The drive train is capable of ascending obstacles greater than the height of its wheels, protects the robot against shocks/vibration, and is highly maneuverable, such as able to execute a zero-point turn. To control the bogie in a variety of scenarios, a novel mechanism is used to selectively limit the articulation range of the bogie and/or programmatically apply a preload to the bogie axle.