A portable davit includes a base having a mounting portion and a housing coupled to the mounting portion. The housing include an inner surface defining a cavity. A hoist is positioned within the cavity. The hoist includes a drive and a rope. The rope includes opposite first and second ends. The first end of the rope is wound about the drive. A mast includes opposite first and second ends. The first end of the mast is positioned within the cavity. The mast includes an inner surface defining a passageway. A jib includes opposite first and second ends. The first end of the jib is coupled to the second end of the mast. The second end of the rope extends through an opening in the second end of the jib.

A suspension work platform hoist system for raising and lowering a work platform is provided. The system incorporates at least one hoist attached to the work platform and in electrical communication with a hoist control system having a monitoring and diagnostic system to monitor and record at least one of a plurality of operating characteristics of the hoist. The hoist control system may further include a safety lock out system that requires authentication of an operator prior to the hoist control system causing movement of the hoist system.

A suspension work platform hoist system for raising and lowering a work platform is provided. The system incorporates at least one hoist attached to the work platform and in electrical communication with a hoist control system having a monitoring and diagnostic system to monitor and record at least one of a plurality of operating characteristics of the hoist. The hoist control system may further include a safety lock out system that requires authentication of an operator prior to the hoist control system causing movement of the hoist system.

Disclosed is a method for controlling cleaning at least a portion of a building facade (104a). A multi-dimensional map of a facade (104a) is cleaned from an elevator platform (200) of an elevator system is received. According to the map, an ordered sequence of instructions is determined. The instructions comprise robotic arm instructions and elevator platform instructions that are temporally intertwined to execute a cleaning pattern covering at least part of facade (104a). The robotic arm instructions are forwarded to control one or more robotic arms (206) and the elevator platform instructions are forwarded to control the elevation of the elevator platform (200). A corresponding device (221, 213) and non-transient memory (223), and a system having the device, are also disclosed.

A plank scaffold system and, more particularly, to a ladder-based vertically-adjustable plank scaffold system. The system may have a pair of ladders, a wall standoff mounted at the top of each of the ladders, a crane support mounted at the top of each of the ladders, a vertical guide bar and roller system to keep it from swinging on the cables, and a horizontal platform suspended on cables below the crane supports, the platform having a pair of cable winches mounted thereon for varying the elevation of the platform. Instead of ladders, tower scaffolds or stage towers may be used on each side to support the vertically-adjustable plank.

A self-climbing platform adapted to movably attach to, and hang from, a vertical structure for supporting a load with a cable connected to a main support connector comprising a retaining strap configured to surround at least a portion of the vertical structure, an adjustment lock attached to the retaining strap and a bracket. The bracket comprising an upper member connecting on one side to an adjustment bar and to a second side of a lower member to form a triangulated structure configured to a cantilevered position with respect to the vertical structure. The cable supporting the platform is connected to the bracket in a manner permitting transmission of the force required to support the self-climbing platform in a direction angled towards the vertical structure. The platform can rotate 360 around a tree or pole and can be used in forestry, civil or recreational fields.

A self-climbing platform adapted to movably attach to, and hang from, a vertical structure for supporting a load with a cable connected to a main support connector comprising a retaining strap configured to surround at least a portion of the vertical structure, an adjustment lock attached to the retaining strap and a bracket. The bracket comprising an upper member connecting on one side to an adjustment bar and to a second side of a lower member to form a triangulated structure configured to a cantilevered position with respect to the vertical structure. The cable supporting the platform is connected to the bracket in a manner permitting transmission of the force required to support the self-climbing platform in a direction angled towards the vertical structure. The platform can rotate 360 around a tree or pole and can be used in forestry, civil or recreational fields.

A blade access arrangement for a rotor blade of a wind power plant having a tower, the arrangement including a platform, a tower guide for guiding the platform against the tower, a bar arrangement capable of being displaced in relation to the platform and connecting the platform with the tower guiding. The blade access arrangement including a hoisting arrangement for hoisting the blade access arrangement up and down, where the bar arrangement includes an extension beam connected to the bar arrangement via a hinge.

A blade access arrangement for a rotor blade of a wind power plant having a tower, the arrangement including a platform, a tower guide for guiding the platform against the tower, a bar arrangement capable of being displaced in relation to the platform and connecting the platform with the tower guiding. The blade access arrangement including a hoisting arrangement for hoisting the blade access arrangement up and down, where the bar arrangement includes an extension beam connected to the bar arrangement via a hinge.

The invention relates to a slipform apparatus (12, 14, 16) and method (50) of operating a slipform apparatus for constructing a primary slipform structure (22) from one side thereof. The slipform apparatus comprising a platform (12) having a plurality of work levels (28, 30, 32), and a lift device having at least one cable (14). The platform (12) is suitable for suspending from above by said cable (14) and the lift device is operable to raise or lower the platform (12). The plurality of work levels (28, 30, 32) are provided around a perimeter of the platform (12) and surround a central space (33) through the plurality of work levels (28, 30, 32). The method includes suspending the platform (12) from above using the lift device (14, 16), performing a rebar installation operation comprising raising the platform (12) using the lift device (14, 16) and installing at least one rebar cage (18, 20), using the lift device (14, 16) to lower the platform (12) to abase of the at least one rebar cage (18, 20), and performing a concrete slipform operation of the at least one rebar cage (18, 20) comprising raising the platform using the lift device (14, 16).