A system and method of managing a lift accident stops the operations of a man lift in the event a lift operator has fallen or in a dangerous position with the man lift. The system includes a man lift, a safety coupler, a lanyard, and a base coupler. The safety coupler and the base coupler establishes a safe position for a lift operator. The method begins by engaging the safety coupler to the base coupler, while attaching the second end to a lift operator within the lift platform. A set of positioning instructions for the lift platform is received with the lift mechanism. The set of positioning instructions is executed for the lift platform with the lift mechanism, if the safety coupler is engaged to the base coupler. The lift platform is locked in place with the lift mechanism, if the safety coupler is disengaged from the base coupler.

A lift device includes a base, a retractable lift mechanism, a work platform, and a lift controller. The retractable lift mechanism is moveable between an extended position and a retracted position. The work platform is configured to support a load and is coupled to and supported by 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 and an electromagnetic brake. The lift controller is in communication with the linear actuator and is configured to determine the load supported by the work platform based on the actuator force applied to the work platform and the height of the work platform.

A motorized cart assembly for use in gardening and other outdoor chores includes a first motor that is operationally coupled to a rear axle of a rolling chassis. The first motor is configured to selectively rotate the rear axle to locomote the rolling chassis. A lift module that is coupled to the rolling chassis is configured to selectively raise and lower an item that is positioned upon an upper plate of the lift module. A handle, which is coupled to at least one of the rolling chassis and the upper plate, is configured to be grasped in at least one hand of a user to steer the rolling chassis.

A foldable rail assembly is coupled to a platform and includes vertical rails and a rectangular rail structure that is hingedly coupled to the vertical rails. The rectangular rail structure is rotatable about hinged couplings formed between the rectangular rail structure and the vertical rails, and movable between a first, deployed position and a second, folded position. The rectangular rail structure extends upwardly from the platform higher in the first position than in the second position.

Systems and apparatuses include a control box for a movable work platform. The control box includes a housing and a display supported by the housing. The housing is defined by a first side panel and a second side partially surrounding and extending from a lower enclosure to an upper enclosure spaced apart from the lower enclosure. At least one of the upper enclosure and the lower enclosure supports a control panel having a plurality of inputs. At least one of the inputs is a platform positioning mechanism in communication with a lift system configured to move the work platform vertically between a stowed position and a deployed position. The display is supported by the housing and is in communication with at least one of the plurality of inputs. The display is configured to receive and present output obtained by a sensor monitoring a parameter of the work 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).

A mast erection system includes a first mast erection apparatus that is adapted to pivotably raise a drilling rig mast of a drilling rig assembly to an intermediate raised position wherein the drilling rig mast is oriented at a first acute angle relative to a horizontal plane, and a second mast erection apparatus that is adapted to further pivotably raise the drilling rig mast from the intermediate raised position at the first acute angle to a fully raised position wherein the drilling rig mast is oriented at a second angle relative to the horizontal plane that is greater than the first acute angle.

A vehicle for tending to an elevated agriculture includes a base, a lower platform positioned above the base, and an adjustable support frame extending vertically upward from the lower platform. The adjustable support frame includes an expandable scissor portion. The vehicle also includes an elevated platform connected to the adjustable support frame such that the elevated platform is positioned above the lower platform, the elevated platform configured to selectively, vertically raise upward relative to the base from a lower height toward a higher height via selective expansion of the expandable scissor portion. The vehicle also includes a guide rail extending vertically upward from the elevated platform and horizontally surrounding at least a portion of the elevated platform. The vehicle further includes a drive unit operatively attached to the base and configured to selectively direct horizontal movement of the base with the elevated platform thereon.

Disclosed is an automatic anti-roll system and method for mobile elevator under various working conditions, related to the field of vehicle equipment. The automatic anti-roll system includes a control system, a sensing module, a driving anti-roll module, an air-operation anti-roll module and a small movement anti-roll module. The automatic response to the different manual operations to the mobile elevator is combined with automatic decision based on state sensing of the mobile elevator to realize the automatic judgment and anti-roll control for different working conditions. As a result, the active-passive combined anti-roll control can be realized for various working conditions in various complicated environments such as driving, aerial operations, and small movement. The anti-roll system has a simple structure and can be operated easily. All the advantages make this system and method meet the practical requirements of anti-roll protection for all working conditions of the mobile elevator.

The invention provides systems and devices for an easily replaceable bearing system for a gunner stand of a vehicle. The bearing system reduces vibration from the vehicle on the bearings, decreases wear and tear, and reduces audible rattling. The bearing system includes a shuttle having a backplate and protruding geometry. Biased members are removably attached to the protruding geometry and are configured to create tension on rails of a gunner stand, holding the bearing system within the rails.