A vehicle wheel positioning and steering apparatus particularly useful for aerial work platforms comprises a support chassis and chassis support legs pivotally connected to the chassis. Steerable wheel assemblies are operably connected at ends of the support legs and powered actuators are operably connected to the chassis and legs for pivotally moving the legs and wheel assemblies relative to the chassis between transport and working positions. Variable length linear wheel steering actuators comprise one link of four bar parallelogram steering linkages between the chassis and wheel assemblies and the support legs each comprise second bars of the four bar parallelogram steering linkages.

Mounting plates for elevating platforms, including a mounting plate with interior and exterior reinforcement pieces elongated vertically and with rounded corners; a single-piece mounting plate inserted through slots in the platform wall; and a single-piece mounting plate with top and side tabs that wrap around the platform exterior to transform tension stress into shear stress.

A land vehicle assembly is provided with a platform for an operator workspace. A control panel is supported upon the platform in electrical communication with the land vehicle. A caution switch is supported upon the platform in electrical communication with the control panel to provide a signal to the control panel indicative of a caution event. A cable is connected to the caution switch to extend across the control panel. The cable is spaced apart from the control panel so that a predetermined force upon the flexible member actuates the caution switch without significantly obstructing the control panel. A manual force upon the flexible member expands the operator workspace. The control panel is programmed to control a mobile operation of the land vehicle, and discontinue the mobile operation of the land vehicle in response to receipt of the caution event signal.

An apparatus for surface finishing includes a robot and an end effector. The end effector includes a compliance wrist having an axis of movement and coupled to the robot and a grinder tool coupled to the compliance wrist. The robot is configured to controllably position the end effector in three-dimensional space. The compliance wrist is configured to bias the grinder tool to a biased position relative to the robot and enable the grinder tool to move relative to the robot in response to an external force acting upon the grinder tool.

A collapsible personnel basket apparatus quickly and easily deploys on the tip of a crane boom and stores in a space-efficient manner when not in use. The basket apparatus has a collapsible spine made up of a plurality of spine segments, a support platform pivotally coupled to a bottom spine segment, a connection member pivotally coupled to a top spine segment and including a coupling portion at a proximal end thereof, an adapter configured for attachment to a crane tip at a distal end of a crane boom, and a foldable rail assembly removably mountable on the spine and/or the support platform. The adapter mates with the coupling portion of the connection member to removably mount the connection member on the crane tip. A related deployment method, spine segment locking mechanism, coupling apparatus, and storage apparatus are also disclosed.

Methods, systems and apparatuses for providing high electrical resistance for an upper control assembly (including control handles) of an aerial lift are provided through an isolation member that is integral to the upper control assembly and interposed between fluid lines in the control assembly and a set of fluid conduits that extend from the control assembly towards other portions of the aerial lift. The isolation member is a dielectric element that comprises a manifold that is made of material that is substantially electrically non-conductive, and that has a plurality of through-holes or hoses configured to allow hydraulic fluid to flow through the isolation member into and out of the fluid lines and conduits. These methods, systems and apparatuses are preferably used in upper control assemblies of aerial platforms that can carry one or more operators in order to prevent such operators from electrocution when controlling the lift.

An idle mitigation system for a bucket truck which includes an alternate source of power for the vehicle air conditioner which is coupled to the hydraulic system of the bucket truck which hydraulic system is alternately powered by an electric motor which, when run in reverse, can charge batteries.

Fall restraint equipment comprising a mobile access unit having a mobile platform portion, a ladder portion, and a cage portion. The components of the fall restraint equipment are formed from butterflying, lasering, cutting, bending, and/or stamping continuous pieces of tubular and sheet metal. The components of the mobile access unit are modular and include adapters of varying height that cause the mobile access unit to exhibit varying height. Also, the mobile access unit is adaptable so that it can roll in a first direction of orientation of the ladder or a second direction perpendicular to the first direction.

The present disclosure relates to the field of aerial work, and in particular, to a walking type aerial work platform, including a walking base, wherein the walking base is provided with a turntable; a mast type lifting device is fixed on the turntable; the mast type lifting device is hinged with one end of a retractable large supporting arm; the other end of the large supporting arm is connected with a work platform through a connecting structure; an up-and-down amplitude changing mechanism is arranged between the large supporting arm and the mast type lifting device; and a leveling mechanism is arranged among the mast type lifting device, the large supporting arm, and the connecting structure. The walking type aerial work platform can transport a work platform to an operation point even if there is an obstacle, and can always maintain the work platform in a horizontal state.

A fully-electric lift vehicle comprises a base, a battery arranged within the base, a drive motor powered by the battery and configured to drive a wheel, a scissor lift including a first end coupled to the base, a work platform supported on a second end of the scissor lift, and a linear actuator including a DC shunt motor powered by the battery. The scissor lift is movable between an extended position and a retracted position. The linear actuator is coupled to the scissor lift so that rotation of the DC shunt motor moves the scissor lift between the extended position and the retracted position. The DC shunt motor includes a rotor and a permanent magnet, the DC shunt motor being configured to act like a generator and reduce a speed of the rotor in response to the battery being fully discharged or a power failure.