A mobile surveillance tower system having a booth connected to a trailer assembly by way of a scissors lift, making the booth movable between a collapsed transportation condition and an extended deployed condition. The mobile surveillance tower system provides stabilizing sensors along the trailer assembly so that the power to the scissor lift is conditioned on the stabilizing sensors identifying even ground for stabilizing jacks operatively associated with the trailer assembly. The stabilizing jacks may have their own stabilizing jack sensors for further conditioning power to the scissor lift.

The present invention provides an automated system for spraying a wall of a building. The automated system comprises a scissor lift having a linear track disposed thereon, wherein the linear track is disposed horizontally with respect to the height of the building; a robotic mechanism slidably mounted on a linear track of the scissor lift, the robotic mechanism further having an end effector adapted for supporting a spray nozzle thereon; a visual monitoring system configured to scan structural characteristics and profiles of the wall; computing device disposed in communication with the visual monitoring system and the robotic mechanism, wherein the computing device is configured to receive the scanned structural characteristics and profile of the wall from the visual monitoring system; and a controller communicably coupled to the computing device, the controller configured to independently control operation of respective ones of the robotic mechanism, and the spray nozzle according to the scanned structural characteristics and profiles of the wall.

A lift device comprises a base, a retractable lift mechanism, a work platform, a linear actuator, and a lift controller. The retractable lift mechanism has a first end coupled to the base and is moveable between an extended position and a retracted position. The work platform is coupled to and supported by a second end of the retractable lift mechanism. The linear actuator is configured to selectively move the retractable lift mechanism between the extended position and the retracted position. The linear actuator comprises a central screw rod, an electric motor configured to provide rotational actuation to the central screw rod, and a nut assembly configured to translate the rotational actuation of the central screw rod into linear motion. The lift controller is configured to receive a lift command from an operator, monitor at least one lift characteristic associated with the linear actuator, and selectively inhibit the lift command.

A platform assembly includes a work platform including a platform floor and a safety rail extending from the platform floor to a rail height, and a primary sensor unit secured to the work platform and positioned adjacent one of the platform floor and the safety rail. The primary sensor unit is configured to monitor an area from the platform floor or from the safety rail to a space above the rail height and forward and aft of the work platform. The platform assembly enhances protection for an operator from sustained involuntary operation resulting in an impact with an obstruction or structure.

A crush avoidance device 100,200,300 (n00) for attachment to an elevated work platform (EWP) 10. The EWP 10 includes a machine control system (MCS) 20 adapted to be operated by an operator to be located on an operator support 50 comprising an operator cage 52. The positioning and movement of the operator support 50 is operable to be controlled by the MCS 20 on or in the support 50. The EWP 10 also includes a drive mechanism 62,72 adapted to effect movement of the support 50 by alternatively engaging a base vehicle drive 72 for land-based movement of the EWP 10 and a height adjustment ram 62 for elevating or lowering the support 50. The MCS 20 is adapted to immediately enact a safety response on receiving a signal from a crush avoidance device (CAD) n00. The crush avoidance device n00 includes a motion detector 120,220,320 that is adapted to detect the operator's movement in or on the support 50 without physical contact with the operator. On detecting a movement of the operator that is associated with a crush event, the crush avoidance device 100,200 is adapted to actuate the safety response.

An operation panel for aerial work vehicles that can be operated by one hand and removable from a deck and used as a remote control. The operation panel body of an operation panel equipped with a driving operation device is detachably mounted on a deck, the driving operation device being provided with: a control stick capable of tilting back/forth and left/right from the neutral position, and that causes an aerial work vehicle to perform a traveling operation to move forward, backward, and stop as the control stick tilts back/forth and a steering operation to steer as the control stick tilts in the left/right directions; and an enable switch that is located in a position where the enable switch can be pressed by the same fingers as those gripping and tilting the control stick, and that enables the traveling operation and steering operation only when pressed.

A lift device comprises a base, a linear actuator, and a rechargeable battery system. The base has a plurality of wheels. The linear actuator is configured to selectively move a work platform configured to support a load between a raised position and a lowered position. The linear actuator has an electric motor. The rechargeable battery system includes a battery, a heating system, and a battery charger. The battery is configured to power the electric motor of the linear actuator. The heating system is configured to selectively provide heat to the battery. The battery charger is configured to selectively charge the battery and to selectively charge the heating system. The heating system is configured to receive power from the battery through a battery power connection and to receive power from the battery charger through a battery charger power connection.

The aerial work platform includes: a platform provided with a guardrail and a mechanism for lifting this platform; a desk for controlling the movements of the aerial work platform, one or more virtual-barrier systems for determining that an individual on the platform is close to a part of the guardrail adjacent to the desk and/or is leaning towards the desk, by detecting interference between the individual and the virtual barrier, the system inhibiting at least certain movements of the aerial work platform if it detects interference with the barrier. The virtual-barrier system includes at least one emitter and one receiver of waves, the system detecting interference of an external object with the barrier by the fact that the receiver receives waves emitted by the emitter by reflection off the object that is interfering with the barrier.

A platform assembly includes a work platform including a platform floor and a safety rail extending from the platform floor to a rail height, and a primary sensor unit secured to the work platform and positioned adjacent the platform floor. The primary sensor unit is configured to monitor an area from the platform floor to a space above the rail height and forward and aft of the work platform. The platform assembly enhances protection for an operator from sustained involuntary operation resulting in an impact with an obstruction or structure.

A horizontal directional drilling machine includes a frame providing a base, a rack movable to different drilling angles with respect to the base, and a carriage having a rotating assembly for engaging a drill rod, the carriage being movable along the rack to drive the drill rod into the ground. The horizontal directional drilling machine further includes an operator lift including an operator area provided alongside the rack and being adjustable for height with respect to the rack to provide access to the carriage for wireline operations. The operator lift is supported by at least one frame element of the frame.