Abstract: A lift device includes a chassis, a rear leveling assembly coupled to a rear end of the chassis, and a front leveling assembly coupled to a front end of the chassis. The rear leveling assembly includes a first rear actuator and a second rear actuator. The first rear actuator and the second rear actuator are selectively engageable to facilitate providing active control of a rear pitch adjustment and a rear roll adjustment of the rear leveling assembly. The front leveling assembly includes a first front actuator and a second front actuator. The first front actuator and the second front actuator are (i) selectively fluidly couplable to facilitate providing passive control of a front pitch adjustment and a front roll adjustment of the front leveling assembly and (ii) selectively fluidly decouplable to facilitate providing active control of the front pitch adjustment and the front roll adjustment of the front leveling assembly.

Abstract: A leveling assembly for a lift device includes a carrier arm, an axle, a first actuator, and a second actuator. The carrier arm includes a base that defines a first interface configured to pivotally couple the carrier arm to a chassis of the lift device to facilitate a pitch adjustment of the leveling assembly, a projection that defines a second interface, and a transition that extends angularly between the base and the projection such that the projection is elevated relative to the base. The axle defines a third interface positioned to engage with the second interface to pivotally couple the axle to the carrier arm to facilitate a roll adjustment of the leveling assembly. The first actuator is pivotally coupled to a first lateral end of the axle. The second actuator is pivotally coupled to an opposing second lateral end of the axle.

Abstract: A leveling assembly for a lift device includes a carrier arm, an axle, a first actuator, and a second actuator. The carrier arm includes a base that defines a first interface configured to pivotally couple the carrier arm to a chassis of the lift device to facilitate a pitch adjustment of the leveling assembly, a projection that defines a second interface, and a transition that extends angularly between the base and the projection such that the projection is elevated relative to the base. The axle defines a third interface positioned to engage with the second interface to pivotally couple the axle to the carrier arm to facilitate a roll adjustment of the leveling assembly. The first actuator is pivotally coupled to a first lateral end of the axle. The second actuator is pivotally coupled to an opposing second lateral end of the axle.

Abstract: A lift device includes a chassis, a boom pivotally coupled to the chassis, a first leveling assembly pivotally coupled to a first end of the chassis, a second leveling assembly pivotally coupled to an opposing second end of the chassis, and a control system. The first leveling assembly includes a first pair of actuators positioned to facilitate a first pitch adjustment and a first roll adjustment of the first end of the chassis. The second leveling assembly includes a second pair of actuators positioned to facilitate a second pitch adjustment and a second roll adjustment of the opposing second end of the chassis. The control system is configured to (i) actively control the first pair of actuators and the second pair of actuators during a first mode of operation, and (ii) actively control the first pair of actuators and facilitate passive control of the second pair of actuators during a second mode of operation.

Abstract: A work platform for a personnel lift includes a floor structure, a safety rail coupled with the floor structure and defining a personnel work area, and a control panel area. A protection envelope surrounds the control panel area and enhances protection for an operator from an obstruction or structure that may constitute a crushing hazard. In one arrangement, the protection envelope includes protection bars on either side of the control panel area extending above the safety rail relative to the floor structure. In another arrangement, the protection envelope includes a platform switch that is configured to trip upon an application of a predetermined force.

Abstract: A system for protecting an operator on an aerial work platform from a crushing hazard includes a sensor, such as opto-electric sensor, positionable adjacent the control panel area. A control system is programmed to control operation of the driving components based on signals from the sensor.

Abstract: An aerial work platform includes a control panel with operator controls for manipulating the platform, a control module communicating with the operator controls and controlling manipulation of the platform based on signals from the control panel, and an obstruction sensing system. The obstruction sensing system includes a sensor mounted in a vicinity of the platform that monitors an operator area, the platform, and an area around the platform. A processor processes the signal to determine a position of an operator on the platform and a proximity of objects in the area around the platform. The control module is in communication with the processor and is programmed to control the manipulation of the platform or machine based on signals from the processor and input from the operator.

Abstract: A longitudinal stability monitoring system controls a boom lift down speed for a lift vehicle. The lift vehicle includes a vehicle chassis supported on front and rear wheels respectively coupled with a front axle and a rear axle, and a boom pivotally coupled to the lift vehicle. The system monitors a vertical load on the rear axle and manages boom lift down speed based on the vertical load. Additionally, the system may manage the boom lift down speed based on both the vertical load on the rear axle and an anticipated operator demand according to a signal from an operator input device.

Abstract: A work platform includes a floor structure having a width dimension and a depth dimension and a safety rail coupled with the floor structure. A control panel area is cooperable with the safety rail and includes a sensor support bar having a top cross bar extending along the width dimension and side bars extending substantially perpendicularly from the top cross bar. Each of the side bars includes an upper section extending from the top cross bar inward in the depth dimension to a bent section, and a lower section extending from the bent section outward in the depth dimension to the safety rail. A platform switch that is configured to trip upon an application of a predetermined force may be attached to the sensor support bar. A switch bar may be secured to the control panel area, and the platform switch may be attached to the switch bar.

Abstract: A longitudinal stability monitoring system controls a boom lift down speed for a lift vehicle. The lift vehicle includes a vehicle chassis supported on front and rear wheels respectively coupled with a front axle and a rear axle, and a boom pivotally coupled to the lift vehicle. The system monitors a vertical load on the rear axle and manages boom lift down speed based on the vertical load. Additionally, the system may manage the boom lift down speed based on both the vertical load on the rear axle and an anticipated operator demand according to a signal from an operator input device.

Abstract: A work platform for a personnel lift includes a floor structure, a safety rail coupled with the floor structure and defining a personnel work area, and a control panel area. A protection envelope surrounds the control panel area and enhances protection for an operator from an obstruction or structure that may constitute a crushing hazard. In one arrangement, the protection envelope includes protection bars on either side of the control panel area extending above the safety rail relative to the floor structure. In another arrangement, the protection envelope includes a platform switch that is configured to trip upon an application of a predetermined force.

Abstract: A platform for an aerial lift enables unobstructed access to a work area adjacent the platform. The platform includes a floor structure with front and rear sides and ends, and a safety rail disposed along at least the front side. The safety rail includes an entry gate. A lift gate is pivotably attached to the safety rail and pivotable between a closed position and an open position. The lift gate includes a gate rail extending along the rear side of the floor structure and a pair of lift rails connected between the gate rail and the safety rail. The gate rail is pivotable relative to the lift rails between an extended position and a retracted position. In this manner, the lift gate can be raised without the gate rail impacting the work surface.

Abstract: An attachment for a telescopic material handler supplies five degrees of freedom (DOF) for the task of picking, manipulating and aiding in the installation of vertical and horizontal wall cladding and other construction materials. The cladding can be of a size up to 1.3×8.0 m and a mass of 350 kg. The control and positioning of the load is accomplished through standard operation of the telehandler in conjunction with wireless control of the five DOF of the device. Hydraulic power for the device functions may be supplied through the telehandler auxiliary circuit. The auxiliary flow also powers a hydraulic generator, which supplies the device with electrical power for both system logic and control and vacuum generation. The cladding panels are handled by the vacuum system.

Abstract: A platform for an aerial lift enables unobstructed access to a work area adjacent the platform. The platform includes a floor structure with front and rear sides and ends, and a safety rail disposed along at least the front side. The safety rail includes an entry gate. A lift gate is pivotably attached to the safety rail and pivotable between a closed position and an open position. The lift gate includes a gate rail extending along the rear side of the floor structure and a pair of lift rails connected between the gate rail and the safety rail. The gate rail is pivotable relative to the lift rails between an extended position and a retracted position. In this manner, the lift gate can be raised without the gate rail impacting the work surface.

Abstract: A panel installation apparatus is cooperable with an aerial work platform of a lift vehicle for installation of panels on a surface. The apparatus includes a trolley movable on at least one rail supported by the aerial work platform between a displaced position spaced from the surface and engaged position adjacent the surface. The trolley is sized to support a panel to be installed. At least one mounting unit is fixed to the aerial work platform via a mounting unit frame and pivotable between a receiving position adjacent the trolley in the engaged position and an installing position adjacent the surface. The mounting unit includes at least one fixing unit selectively attachable to the panel. With the panel delivered to the mounting unit, the mounting unit can be pivoted and secured to the panel via the fixing unit, and the panel can be subsequently pivoted adjacent the surface for installation.

Abstract: A scissors lift includes a scissors arm assembly secured at one end to a base and coupled with a lift mechanism that expands and contracts the scissors arm assembly. A platform is supported at an opposite end of the scissors arm assembly via a plurality of load sensing pins that detect a vertical load on the platform. An interface module receives signals from the load sensing pins and communicates with the lift mechanism, wherein the interface module controls operation of lift functions and the lift mechanism according to the signals from the load sensing pins. Preferably, the load sensing pins are sized substantially the same as the conventional pins they replace. As a consequence, no redesign or additional structures are necessary to install the load sensing system and provide a safe operation of the scissors lift machine.

Abstract: An attachment for a telescopic material handler supplies five degrees of freedom (DOF) for the task of picking, manipulating and aiding in the installation of vertical and horizontal wall cladding and other construction materials. The cladding can be of a size up to 1.3×8.0 m and a mass of 350 kg. The control and positioning of the load is accomplished through standard operation of the telehandler in conjunction with wireless control of the five DOF of the device. Hydraulic power for the device functions may be supplied through the telehandler auxiliary circuit. The auxiliary flow also powers a hydraulic generator, which supplies the device with electrical power for both system logic and control and vacuum generation. The cladding panels are handled by the vacuum system.

Abstract: A portable mast lift includes a base unit having a mast and a platform lifting system. A work platform is raised and lowered on the mast of the lifting system. The mast lift is transportable and operable by a single user. In one arrangement, a machine weight of the mast lift is less than 200 lbs. Additionally, the mast lift is preferably supported in use at two support points. Multiple embodiments of the mast lift provide for varying maximum reach and load limits.

Abstract: A portable mast lift includes a base unit having a mast and a platform lifting system. A work platform is raised and lowered on the mast of the lifting system. The mast lift is transportable and operable by a single user. In one arrangement, a machine weight of the mast lift is less than 200 lbs. Additionally, the mast lift is preferably supported in use at two support points. Multiple embodiments of the mast lift provide for varying maximum reach and load limits.

Abstract: A measurement system uses dual axis force sensor pins to effectively assess the tipping moment of a load-bearing vehicle and anticipate imminent tipping in any direction. The pins are installed in the pivot points of the boom of a lift vehicle and its main lift cylinder, substituting the standard structural pins presently used. For non-traditional boom support arrangements, one sensor pin for each moving part attachment to non-moving turntable is required. Each of the sensors provides the actual force components acting on the sensor in two perpendicular axes. The output signals are then utilized to assess vehicle stability and detect when the machine is approaching instability in order to warn the operator and/or restrict vehicle movements.