The invention relates to an axle assembly of a heavy goods vehicle, comprising a pivot bearing steering rotational axis (X), a wheel support comprising at least one wheel that is mounted thereon so as to be rotatable about a wheel rotational axis (Z), the wheel rotational axis (Z) being arranged behind the steering rotational axis (X), in the travel direction (V), in every deflection state of the axle assembly, during straight travel, and a unit that is adjustable about the steering rotational axis (X) when the wheel support is rotated, the adjustable unit being adjustable between two operating states, specifically a forwards travel operating state in which it damps the rotational movement of the wheel support about the steering rotational axis (X), and a reverse travel operating state in which it introduces a steering force, which steers the axle assembly, into the axle assembly.

A method and apparatus for building an assembly fixture for holding a fuselage assembly. A number of cradle fixtures may be driven across a floor to an assembly area. The number of cradle fixtures may be configured to form the assembly fixture.

A method and apparatus for adjusting an adjustable retaining structure. The adjustable retaining structure may be rotated, passively, about a spherical interface as a panel applies a load to the adjustable retaining structure.

An independent rear suspension of a motor vehicle with an electrical drivetrain. The independent rear suspension including a left semi-trailing arm and a right semi-trailing arm, each of which can be articulated with an end on the body side to a chassis of the motor vehicle and are fixedly connectable to a wheel carrier on an end on the wheel carrier side, and also a transverse leaf spring for the suspension of the rear wheels. The transverse leaf spring is attached on the end side to the ends of the semi-trailing arms on the wheel carrier side, so that between the semi-trailing arms and the transverse leaf spring is formed an open installation space for receiving at least part of the electrical drivetrain.

An agricultural machine includes a frame, and a lifting unit configured to vary a height of an operating unit with respect to a supporting surface for the machine. The lifting unit includes hydraulic cylinder with a liner and first and second pistons both slidingly housed inside the liner and arranged in series to define first and second chambers inside the liner, wherein the first and second pistons are controllable independently. The lifting unit includes a pressure stabilizer in fluid connection with the first chamber and that controls a pressure in the first chamber so that the first piston moves therein as a force generated on the first piston varies. A second control element for the second chamber carries out a volumetric control of the second chamber to control a position of the second piston regardless of a pressure inside the second chamber.

A method and apparatus for installing a fastener. A reactive structural force is generated in a first direction during installation of the fastener. A new reactive structural force is generated in a second direction opposite to the first direction during the installation of the fastener.

An off-road vehicle includes a frame, a front suspension, and a rear suspension. In some examples of the off-road vehicle, the rear suspension includes trailing arms with are pivotally attached to the frame rearward of an operator area. Further, the frame can include a front subframe assembly and a rear subframe assembly which are easily removable from the main frame of the vehicle to permit access to various components of the off-road vehicle.

A sulky apparatus for use behind self-propelled operator-controlled machines is provided. The apparatus includes a riding platform on which the operator stands, configured with a suspension system for absorption of shock and reduced impact on the body of the operator. The suspension system comprises one or more compression springs and is configured for dual adjustment, wherein the operator may adjust the spring tension directly by adjusting the compression of the spring coils or select pivot points on the sulky for control over the amount of load absorbed by the spring coils. The sulky apparatus may be connected to a self-propelled, operator-controlled machine by way of a boom system that attaches to the sulky apparatus at one end and the machine at the other. The sulky apparatus provides a significant benefit to the rider by way of suspension system capable of absorbing shocks to the rider, fitted within a limited space.

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.

Provided is a robotic device including: a body; an electronic computing device housed within the body; and at least two wheel suspension systems coupled with the body including: a first suspension system including: a frame; a rotating arm pivotally coupled to the frame on a first end and coupled to a wheel on a second end; and an extension spring coupled with the rotating arm on a third end and the frame on a fourth end, wherein the extension spring is extended when the wheel is retracted; and a second suspension system including: a base slidingly coupled with the frame; a plurality of vertically positioned extension springs coupled with the frame on a fifth end and the base on a sixth end; at least one set of paired magnets, with at least one magnet affixed to the frame and paired to at least one magnet affixed to the base.