A lift device includes a lift assembly, a platform, and a controller. The lift assembly is configured to be driven to increase or decrease in length by extension and retraction of one or more actuators. The platform is coupled at an upper end of the lift assembly. The controller is configured to receive a value of a pitch angle and a roll angle of the lift device from an orientation sensor. The controller is further configured to determine a maximum allowable elevation of the platform based on at least one of the value of the roll angle and the value of the pitch angle of the lift device. The controller is further configured to limit operation of the lift assembly based on the maximum allowable elevation of the platform.

A rechargeable battery system for a lift device includes a battery configured to power at least one component of the lift device, a heating system configured to selectively provide heat to the battery, and a battery charger connected to the battery and to the heating system. The heating system is configured to selectively receive power from the battery through a battery power connection or from the battery charger through a battery charger power connection.

The present disclosure relates to the technical field of scissors lifting equipment, in particular to scissors lifting equipment with a hydraulic buffer for maintenance and a control method thereof. The scissors lifting equipment includes a hydraulic buffer and a scissors mechanism. The hydraulic buffer includes a hydraulic cylinder and a piston rod. The hydraulic cylinder has a lower connection end, and the piston rod has an upper connection end. The hydraulic buffer can support the scissors mechanism after being connected to the scissors mechanism via the upper connection end and the lower connection end. With characteristics of strong buffer capacity and load capacity, the hydraulic buffer, when supporting the scissors mechanism, not only is safe and stable, but also resists impact with buffer performance, thereby avoiding damage to the hydraulic buffer and the scissors mechanism.

The present invention provides an automated system for spraying a wall of a building. The automated system comprises a gondola mounted on the building, the gondola 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 the linear track of the gondola, the robotic mechanism further having an end effector adapted to support a spray nozzle thereon; a visual monitoring system configured to scan structural characteristics and profiles of the wall; a 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 mobile platform includes at least one first sensor mounted at a first position on the mobile platform and at least one second sensor mounted at a second position on the mobile platform, where the first position is offset from the second position. The at least one first sensor is configured to capture first data measurements of plants in the growing area. The at least one second sensor is configured to capture second data measurements of the plants in the growing area. Each of the first and second data measurements is associated with a three-dimensional position within the growing area and a time. The first and second sensors are configured to generate at least one common type of data measurement such that at least some of the first and second data measurements represent stereo-spatio-temporal data measurements of the plants in the growing area.

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.

A fully-electric lift vehicle comprises a base, a battery, a scissor lift movable between an extended position and a retracted position, a work platform the scissor lift, a linear actuator including an electric motor powered by the battery, an electromagnetic brake coupled to the electric motor; and a manual release coupled to the electromagnetic brake so that, in the event of a power failure, actuation of the manual release enables the scissor lift to descend toward the retracted position. The electric motor is configured to act like a generator and reduce a descent speed of the scissor lift during the descend toward the retracted position.

A lift device includes a chassis, tractive elements, a platform, a lift assembly, a first set of proximity sensors, and a controller. The tractive elements are rotatably coupled to the chassis and support the chassis. The platform is disposed above the chassis and includes a deck for supporting an operator. The lift assembly couples the platform to the chassis and can selectably move the platform between a lowered position and a raised position. The first set of proximity sensors are coupled to the platform and detect a distance of an obstacle relative to the platform. The controller is operably coupled with an alert system and receives obstacle detection data from the first set of proximity sensors. The controller selects a subset of the first set of proximity sensors to analyze based on an active function of the lift device and determines whether the obstacle is within the minimum allowable distance.

A lift device includes a base, a platform, and a scissor assembly coupling the base to the platform. The scissor assembly includes a first scissor layer, a second scissor layer, and a third scissor layer each including an inner arm pivotally coupled to an outer arm. The first scissor layer has a first middle axis offset vertically from a first end axis center point. A kicker assembly couples an actuator configured to raise and lower the platform to the second scissor layer and the third scissor layer. The kicker assembly includes a kicker with opposing first and second kicker ends. The kicker is pivotally coupled to the second scissor layer and releasably coupled to the third scissor layer. The actuator rotates the kicker relative to the second scissor layer. A guide is coupled to the kicker and configured to limit the rotation of the kicker.

A lift device comprises a base, a retractable lift mechanism, a work platform, a linear actuator, and a descent control mechanism. The base has a plurality of wheels. 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 configured to support a load. 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 has an electric motor. The descent control mechanism is configured to reduce a speed at which the retractable lift mechanism is moved from the extended position to the retracted position.