An adjustable height platform includes three corners with lifting mechanisms and one corner without. A scissor support mechanism is located under the platform and has two pivoting ends and two sliding ends with roller bearings on each, that attach to upper and lower frames of the platform using C shaped bearing guides, that allow the scissor ends to roll inside each guide. In use, as the platform is raised on each corner that has a lifting actuator, the fixed scissor ends are forced to open, being pulled apart by the upper and lower frames, and thus the opposite ends of the scissor mechanism that are near the unsupported corner are forced to open and act on the upper and lower unsupported frame corner through the C shaped bearing guides, therefor raising the unsupported corner accordingly and proportionately to the corners with the lifting actuator. Inversely, When the top movable frame is lowered to the floor, if so equipped, the casters on this top frame come in contact with the floor before the lifting actuators are fully retracted. Therefore, the top frame cannot continue in the downward direction and the actuators begin to pull the base frame upward off of the floor and the scissor mechanism acts on the unsupported corner through the C shaped bearing guides to pull the unsupported base frame corner up so that the platform may be moved around easily with the assistance of the casters.

Systems and apparatuses an adjustable platform rail assembly. The adjustable platform rail assembly includes a lower rail assembly and an upper rail assembly. The lower rail assembly extends away from a platform of a mobile elevated work platform to define a passenger compartment therein. The upper rail assembly is coupled to the lower rail assembly and extends upwardly away from the lower rail assembly. The upper rail assembly includes a perimeter space assembly and a confined space assembly. The upper rail assembly is movable between (a) a first configuration in which the perimeter rail assembly and the confined space assembly are extended and the upper rail assembly surrounds the passenger compartment, and (b) a second configuration in which the perimeter rail assembly is collapsed, the confined space assembly is extended, and the upper rail assembly surrounds a subset of the passenger compartment.

A lift device includes a base, a lift assembly coupled with the base, a platform coupled with the lift assembly, and an obstacle detection system that includes a first lidar sensor, a second lidar sensor, a third lidar sensor, and a fourth lidar sensor. The first lidar sensor is positioned at a first corner of a base of the platform. The second lidar sensor is positioned at a second corner of the base of the platform. The third lidar sensor is positioned at a third corner of the base of the platform. The fourth lidar sensor is positioned at a fourth corner of the base of the platform. The lidar sensors are oriented in a downwards direction to detect objects or obstacles that are at a vertical position below the base of the platform.

The aerial work platform comprises a control console (30) for moving the platform (20) to a working position at a height and for moving the chassis (2) on the ground in the forward (F.sub.AV) and backward (F.sub.AV) directions. To avoid confusing these two directions of movement because of the variable orientation of the console (30) with respect to the chassis (2), the direction of movement selected at the control console (30) is indicated to the operator by activation of at least one visual indication (63a, 64a, 64b, 70.i, 72) located on the side of the chassis (2) that corresponds to the direction of movement selected, or having a form pointing in the direction of movement (F.sub.AV, F.sub.AR) selected.
A screen (40) also indicates the direction of movement (F.sub.AV, F.sub.AR) selected by a display transposing to the screen (40) the above visual indication system in relation to the azimuthal direction of the chassis (2) with respect to the console (30).

The invention relates to a scissor arm assembly for a scissor lift, comprising two scissor arms (124, 125) pivotally mounted about a shaft (70). Each arm is made of a tubular beam having a local reinforcement plate (80, 81, 82) welded on either side. Each arm (124, 125) has two through-holes (101, 102; 103, 104) for the shaft (70), each of which is made in a respective side of the beam and the corresponding reinforcement plate. The shaft (70) is circumferentially supported in each hole by both the wall of the beam and the corresponding reinforcement plate (80, 81, 82). The shaft is free of support inside the beam between the two through-holes (101, 102; 103, 104). This avoids having to weld, on either side of the scissor beam, a part inserted therein to house the shaft (70).

A remote controlled cart includes a body, an electric battery coupled to the body and a pair of track assemblies coupled to the body. The remote controlled cart includes an electric motor operatively coupled to the battery. The electric motor is configured to supply propulsion power to the pair of track assemblies. The remote controlled cart includes a body cover coupled to a top surface of the body. A top surface of the body cover includes at least one pair of rails. The pair of rails removably couples a task module with the body cover.

A lift device includes a chassis, tractive elements, a platform including a deck, a lift assembly, and a stair assembly. The lift assembly is configured to move the platform between a lowered position and a raised position. The stair assembly is coupled to at least one of the platform and the chassis and includes a first support and a second support extending parallel to one another. The stair assembly is repositionable between a stored position and a deployed position and facilitates access to the deck from the ground when in the deployed position. The first support extends farther outward horizontally than the second support relative to the chassis when the stair assembly is in the deployed position. The first support extends farther outward horizontally relative to the chassis when the stair assembly is in the deployed position than when the stair assembly is in a stored position.

A scissor boom system including a scissor boom assembly having a telescopic boom section including a base-boom, a middle-boom, and a top-boom, a scissor links assembly, a chassis, and a power hoist. The chassis supports the power hoist, the power moves the telescopic boom section and the scissor links assembly between raised and lowered conditions when manipulated. The scissor boom assembly provides a stable work platform for workers. The telescopic boom section provides for horizontal-movement of a work platform, and the scissor links assembly is thus able to provide vertical-movement of the work platform, as desired.

The present invention provides an automated system for spraying an wall of a building. The automated system comprises a carrier; a robotic mechanism mounted on the carrier, 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 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.