A steerable suspension system for a vehicle, especially useful in a self-propelled vehicle that can include a worker-platform and optionally include pick-up, transport, and delivery apparatus for produce bins. The steerable suspension system includes independent pairs of parallel arms, each pair coupled to a single steerable drive-wheel, serving as both a suspension and as a shock absorber, with the parallel-acting pair of arms maintaining the steering-leg in its substantially vertical position relative to a ground surface. This steerable suspension system aids the steerable movement and suspension of the vehicle, while increasing safety and maneuverability, and helps to reduce the number of workers required to operate the vehicle.

A self-propelled driving simulator has a machine frame which can be moved by three, preferably four or more, wheel assemblies on an underlying surface. The wheel assemblies each contain at least one wheel which can move on the underlying surface and which is arranged so as to be rotatable about a steering axle. The machine frame is coupled to a cockpit which contains a seat for a person as well as operator control elements for controlling the driving simulator. The cockpit has a degree of freedom of rotational movement with respect to the machine frame, with the result that the cockpit can be rotated with respect to the machine frame about a main rotational axis, and/or wherein the main rotational axis is preferably a normal vector of the plane spanned by the wheel contact faces of the wheels on the underlying surface.

A machine including a frame, a traction assembly and an actuator disposed between the frame and the traction assembly is disclosed. The actuator is configured to raise the frame to a serviceable height relative to the traction assembly. The machine further includes a support rod configured to be disposed between the frame and the traction assembly when the frame is at the serviceable height such that the support rod is magnetically held on one of the frame and the traction assembly and the support rod defines a gap with other of the frame and the traction assembly. The support rod is configured to abut the other of the frame and the traction assembly when a height of the frame relative to the traction assembly decreases to a height less than the serviceable height.

A drill rig with a steering system may include a substructure having a wheelhouse, a drill floor arranged atop the substructure, a mast extending upwardly and above the drill floor, and a steering system arranged within the wheelhouse. The steering system may include a wheel assembly comprising an electric motor configured for driving rotational motion of a wheel, a deployment device configuring for deploying the wheel assembly to carry the drill rig, and a steering mechanism configured for selective engagement with the wheel assembly and rotating the wheel assembly.

A system, apparatus and method for providing weight-based task-specific speed control in a self-propelled agricultural product applicator utilize a controllable ride-height trailing arm suspension system, including an extensible air strut and an angular position sensor, for independently joining each wheel to a frame of the applicator. An electronic control unit utilizes the angular positions detected by the sensors, in conjunction with a desired task input, to calculate a present suspended weight and control maximum speed of the applicator for each task, per a predetermined schedule in response to the present suspended load of the applicator.

An active-passive differential series-parallel connection supporting leg, a gravity-based closing series-parallel connection supporting leg, and a six-degree-of-freedom position-adjusting robot platform are provided. The six-degree-of-freedom position-adjusting robot platform is formed of a plurality of legs distributed in parallel, and includes a frame, a distributed controller, and multi-chain parallel legs, wherein a plurality of legs are fixedly connected with the frame through a base. The present disclosure integrates an omnidirectional movement and position adjustment to solve problems that the existing position-adjusting platform is fixed or moved inflexibly, the structure is over complicated, the occupation space is excessive, and the movement error is large, and thereby effectively expanding application range of the six-degree-of-freedom position-adjusting robot platform.

A drill rig with a steering system may include a substructure having a wheelhouse, a drill floor arranged atop the substructure, a mast extending upwardly and above the drill floor, and a steering system arranged within the wheelhouse. The steering system may include a wheel assembly comprising an electric motor configured for driving rotational motion of a wheel, a deployment device configuring for deploying the wheel assembly to carry the drill rig, and a steering mechanism configured for selective engagement with the wheel assembly and rotating the wheel assembly.

A swingarm includes a first swingarm leg oriented along a first horizontal plane, a main body extending upward and outward from a second end of the first swingarm leg, and a second swingarm leg extending from a second end of the main body along a second horizontal plane. The swingarm also includes a first bearing holder coupled to a first end of the first swingarm leg and a second bearing holder coupled to a second end of the second swingarm leg. The first bearing holder includes a cavity oriented horizontally to form a first pivot axis. The second bearing holder includes a cavity oriented vertically to form a second pivot axis. The first and second bearing holders are of the same construction.

A system, apparatus and method for providing task-specific ride-height control in a self-propelled agricultural product applicator utilize a controllable ride-height trailing arm suspension system for independently joining each wheel to a frame of the applicator. Each trailing arm suspension system includes upper and lower suspension arms, an extensible air strut, and an angular position sensor operatively interconnected to one another and disposed between a rolling axis of the ground engaging wheel independently supported by that suspension system and a point of attachment of the suspension system to the frame, such that the position sensor detects a relative angular position between the upper and lower suspension arms at a present extension of the air strut. An electronic control unit utilizes the angular positions detected by the sensors, in conjunction with a desired task input, to control the air struts in a manner providing a ride-height corresponding to the desired task input.

A machine including a frame, a traction assembly and an actuator disposed between the frame and the traction assembly is disclosed. The actuator is configured to raise the frame to a serviceable height relative to the traction assembly. The machine further includes a support rod configured to be disposed between the frame and the traction assembly when the frame is at the serviceable height such that the support rod is magnetically held on one of the frame and the traction assembly and the support rod defines a gap with other of the frame and the traction assembly. The support rod is configured to abut the other of the frame and the traction assembly when a height of the frame relative to the traction assembly decreases to a height less than the serviceable height.